CN203949842U - A kind of starch viscosity measurement mechanism - Google Patents
A kind of starch viscosity measurement mechanism Download PDFInfo
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- CN203949842U CN203949842U CN201420333717.3U CN201420333717U CN203949842U CN 203949842 U CN203949842 U CN 203949842U CN 201420333717 U CN201420333717 U CN 201420333717U CN 203949842 U CN203949842 U CN 203949842U
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- Prior art keywords
- turning barrel
- rotor
- paddle
- viscosity measurement
- measurement mechanism
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Abstract
The utility model discloses a kind of starch viscosity measurement mechanism, comprise constant temperature electric furnace, turning barrel, rotor, stepper motor and torsional moment sensor, described turning barrel is placed in described constant temperature electric furnace, and described torsional moment sensor is coaxially connected with described stepper motor; Described rotor comprise rotating shaft and with the paddle that is positioned at described rotating shaft bottom, described rotor, by described rotating shaft, is removably coaxially connected with the bottom of described stepper motor, is evenly equipped with several through holes on described paddle; Described rotor stretches into turning barrel from the top of described turning barrel, and can in described turning barrel, rotate by the central shaft around described turning barrel.Its technique effect is: can not change under the prerequisite of torsional moment sensor, guarantee the requirement for starch viscosity measurement accuracy.
Description
Technical field
The utility model relates to a kind of starch viscosity measurement mechanism in surveying instrument field.
Background technology
Starch is the principal ingredient in cereal crops, and in the suspending liquid of starch and water formation, the process of starch crystallite bundle melting is called the gelatinization of starch.Starch viscosity refers to that starch suspension is heated to the tolerance of gelatinization point formed sample viscosity when above, is the important indicator of reflection starch gelatinization characteristic, and the measurement of this index is the routine measurement project in the industry such as food.Current starch viscosity measurement mechanism is all to develop on the basis of German Bradley Bender starch viscosity measuring instrument.
Refer to Fig. 1, in the applying date, it is on September 4th, 2012, application number is in 201220447156.0 utility application, announce a kind of starch viscosity proving installation, comprised jacking gear 7, rotor 3, cooling stick 300, turning barrel 2, constant temperature electric furnace 1, torsional moment sensor 5, temperature sensor and stepper motor 4.Wherein stepper motor 4 is positioned at the below of constant temperature electric furnace 1, for driving the rotation of the turning barrel 2 that is positioned at constant temperature electric furnace 1.Jacking gear 7 is controlled the height of rotor 3, makes rotor 3 stretch into turning barrel 2 from the top of turning barrel 2, and the sample in turning barrel 2 is measured.In the process of measuring, between turning barrel 2 and rotor 3, produce shear action, stepper motor 4 produces a torsional moment, and torsional moment is directly proportional to the viscosity of sample.The torsional moment sensor 5 that is positioned at rotor 3 tops shows this torsional moment.After subsequent step converts to this torsional moment, obtain the viscosity of sample, but the utility model does not relate to this subsequent step.Cooling stick 300 is one with rotor 3, and stretches into turning barrel 2 together with rotor 3, to the sample in turning barrel 2, carries out cooling.Described temperature sensor connects constant temperature electric furnace 1 and cooling stick 300 simultaneously, and the temperature of sample in turning barrel 2 is controlled.
The kind of starch structure is a lot, the difference of the starch of different structure in viscosity is very large, in order to meet the requirement of measuring for starch viscosity, torsional moment transducer range scope is large, affected the accuracy of torsional moment and viscosity measurement, also want often in order to measure the starch of different viscosities, to change different torsional moment sensors simultaneously, improved the cost of starch viscosity measurement mechanism.
Utility model content
The purpose of this utility model is in order to overcome the deficiencies in the prior art, and a kind of starch viscosity measurement mechanism is provided, and it can not changed under the prerequisite of torsional moment sensor, guarantees the requirement for starch viscosity measurement accuracy.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of starch viscosity measurement mechanism, comprise constant temperature electric furnace, turning barrel, rotor, stepper motor and torsional moment sensor, described turning barrel is placed in described constant temperature electric furnace, and described torsional moment sensor is coaxially connected with described stepper motor; It is characterized in that:
Described rotor comprise rotating shaft and with the paddle that is positioned at described rotating shaft bottom, described rotor, by described rotating shaft, is removably coaxially connected with the bottom of described stepper motor, is evenly equipped with several through holes on described paddle;
Described rotor stretches into turning barrel from the top of described turning barrel, and can in described turning barrel, rotate by the central shaft around described turning barrel.
Further, described constant temperature electric furnace comprises: air cooling equipment, and heating arrangement and temperature sensor, described heating arrangement is connected with described temperature sensor respectively with described air cooling equipment.
Further, described torsional moment sensor is coaxially connected with the bottom of described stepper motor, and the rotating shaft of described rotor is removably coaxially connected with the bottom of described torsional moment sensor.
Further, described rotor is to be removably coaxially connected with the bottom of described torsional moment sensor by being positioned at the rotary head at described rotating shaft top.
Further, the height of described paddle is greater than 1/2nd of described turning barrel height, and is less than 2/3rds of described turning barrel height.
Further, the through hole on described paddle be on described paddle from bottom to up, be the through hole of several circles, regular polygon or the parallelogram of single-row distribution.
Further, several through holes that the through hole on described paddle distributes for be multiple row on described paddle.
Further, described stepper motor is fixed on a jacking gear.
Adopted the technical scheme of a kind of starch viscosity measurement mechanism of the present utility model, by being equipped with different rotors, by several through holes are set on the paddle of every kind of rotor, on every kind of rotor, to account for the ratio of the one-sided area of paddle be different to the through hole total area of through hole, according to the range of torsional moment sensor, select the technical scheme of the starch viscosity measurement mechanism of suitable rotor.Its technique effect is: can not change under the prerequisite of torsional moment sensor, guarantee the requirement for starch viscosity measurement accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the bright a kind of starch viscosity measurement mechanism of prior art.
Fig. 2 is the structural representation of a kind of starch viscosity measurement mechanism of the present utility model.
Fig. 3 is the schematic diagram of the first rotor in a kind of starch viscosity measurement mechanism of the present utility model.
Fig. 4 is the schematic diagram of the second rotor in a kind of starch viscosity measurement mechanism of the present utility model.
Fig. 5 is the schematic diagram of the third rotor in a kind of starch viscosity measurement mechanism of the present utility model.
Fig. 6 is the schematic diagram of the 4th kind of rotor in a kind of starch viscosity measurement mechanism of the present utility model.
Fig. 7 is the schematic diagram of the 5th kind of rotor in a kind of starch viscosity measurement mechanism of the present utility model.
Fig. 8 is the schematic diagram of the 6th kind of rotor in a kind of starch viscosity measurement mechanism of the present utility model.
Fig. 9 is the schematic diagram of the 7th kind of rotor in a kind of starch viscosity measurement mechanism of the present utility model.
Figure 10 is the schematic diagram of the 8th kind of rotor in a kind of starch viscosity measurement mechanism of the present utility model.
Figure 11 is the schematic diagram of the 9th kind of rotor in a kind of starch viscosity measurement mechanism of the present utility model.
Embodiment
Refer to Fig. 2 to Figure 11, inventor of the present utility model, in order to understand the technical solution of the utility model better, below by specific embodiment, and is described in detail by reference to the accompanying drawings:
Refer to Fig. 2, a kind of starch viscosity measurement mechanism of the present utility model, comprises constant temperature electric furnace 1, turning barrel 2, rotor 3, stepper motor 4, torsional moment sensor 5, support 6 and jacking gear 7.
Wherein, constant temperature electric furnace 1 is placed on support 6, and the bottom of support 6 is provided with flat spin regulating device 61, vertical with level ground for regulating thermostatic electric furnace 1.
Turning barrel 2 is placed in constant temperature electric furnace 1, and because constant temperature electric furnace 1 is adjusted vertical with level ground, so turning barrel 2 is also vertical with level ground.
Constant temperature electric furnace 1 built-in wind cooling device (not shown), heating arrangement (not shown) and temperature sensor (not shown), described heating arrangement is connected with described temperature sensor respectively with described air cooling equipment.The response temperature of described temperature sensor is adjustable, temperature in turning barrel 2 is higher than 0.1 ℃ of the response temperature of described temperature sensor, described temperature sensor sends the signal that air cooling equipment is opened, otherwise the temperature in turning barrel 2 is lower than 0.1 ℃ of the response temperature of described temperature sensor, described temperature sensor sends the signal that heating arrangement is opened, thereby make the temperature constant of turning barrel 2 interior samples near the response temperature of described temperature sensor, thereby be conducive to the Measurement accuracy of starch viscosity.Constant temperature electric furnace 1 belongs to prior art.
Jacking gear 7 is connected with support 6, and vertical with support 6.Stepper motor 4 is fixed on jacking gear 7, and can be along with jacking gear 7 liftings.Torsional moment sensor 5 is coaxially connected with the bottom of stepper motor 4.
Rotor 3 comprise rotating shaft 31 and with the paddle 32 that is positioned at rotating shaft 31 bottoms, the rotating shaft 31 of rotor 3 is removably coaxially connected with the bottom of torsional moment sensor 5, i.e. the rotating shaft 31 of rotor 3 is removably coaxially connected with the bottom of stepper motor 4 by torsional moment sensor 5.In the present embodiment, the rotating shaft 31 of rotor 3 is that the rotary head 311 by rotating shaft 31 tops is removably coaxially connected with the bottom of torsional moment sensor 5.
Rotor 3 stretches into turning barrel 2 from the top of turning barrel 2, and can be under the drive of stepper motor 4, and the central shaft around turning barrel 2 in turning barrel 2 rotates.Be that rotor 3, turning barrel 2 and constant temperature electric furnace 1 are coaxial.
In the present embodiment, several through holes 321 on paddle 32, have been increased.In starch viscosity measuring process, sample produces shearing force effect for paddle 32, and shearing force is acted on paddle 32.Paddle 32 is for the lifting surface area S of this shearing force
stressedfor the one-sided area S of paddle 32 and the through hole total area S of through hole 321
through holepoor.The one-sided area S of paddle 32 is the product of paddle 32 bottom side length d and paddle 32 height h.Paddle 32 is for the lifting surface area S of this shearing force
stressedformula can be expressed as:
S
stressed=S-S
through hole=d * h-S
through hole.
Be subject to torsional moment that stepper motor 4 is subject to and the lifting surface area S of paddle 32
stressedbe directly proportional, owing to having increased through hole 321 on paddle 32, in the situation that starch viscosity is identical, can the less torsional moment sensor 5 of selected range, the accuracy that torsional moment is measured improves, and by use, has different through hole total area S
through holethe rotor 3 of paddle 32, guarantee that, when the viscosity of sample is measured, the range ability of the torsional moment that stepper motor 4 is suffered and torsional moment sensor 5 matches, thereby guarantee the accuracy of sample viscosity measurement.
Meanwhile, for the accuracy that guarantees to measure, the height of paddle 32 is greater than the length of paddle 32, and the height h that is preferably stirring 32 is two to three times of paddle 32 length d.The height of stirring 32 is greater than 1/2nd of turning barrel 2 height, and is less than 2/3rds of turning barrel 2 height, has both guaranteed that paddle 32 had enough lifting surface area S for shearing force that sample produces
stressed, can guarantee that again sample can be at the interior submergence paddle 32 of turning barrel 2, to guarantee the accuracy of test result.
The computing formula of starch viscosity is:
The viscosity that wherein η is sample, T is the torsional moment of stepper motor 4, N
rrotating speed for stepper motor 4.
In the present embodiment, starch viscosity measurement mechanism has been equipped with altogether nine kinds of rotors 3.
Refer to Fig. 3 to Fig. 8, through hole 321 on rotor 3 paddles 32 be on paddle 32 from bottom to up, be the through hole 321 of four each and every one circles of single-row distribution, the through hole 321 of four equilateral triangles, four foursquare through holes 321, three orthohexagonal through holes 321, or the through hole 321 of five parallelogram.Refer to Fig. 9 to Figure 11, the through hole 321 on paddle is the through hole 321 that is the rectangle of single file two row on paddle 32, the through hole 321 of the rectangle being arranged in two rows, and be arranged in latticed through hole 321.
By adjusting the response of temperature sensor on constant temperature electric furnace 1, and 75 revs/min of rotating speed systems adjusting stepper motor 4, the temperature of turning barrel 2 interior samples is adjusted to mensuration temperature, according to the torsional moment on the display screen of torsional moment sensor 5, bring formula 1-1 into, calculate the viscosity number of measuring the sample at temperature, it is easy to use, measurement is accurately also efficient, meets GB GB/T22427.7 – 2008.
Meanwhile, for the accuracy and the repeatability that guarantee to measure, rotor 3 is all to be made by the high stainless steel of anti-torsional strength.
Meanwhile, owing to having increased through hole 321 on paddle 32, rotor 32 processing are simple, easy to clean, more even to sample stirring, further improved the accuracy that sample viscosity is measured, and are also beneficial to the maintenance of whole starch viscosity measurement mechanism.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for the utility model is described, and be not used as restriction of the present utility model, as long as within the scope of connotation of the present utility model, to the variation of the above embodiment, modification, all will drop within the scope of claims of the present utility model.
Claims (8)
1. a starch viscosity measurement mechanism, comprises constant temperature electric furnace, turning barrel, rotor, stepper motor and torsional moment sensor, and described turning barrel is placed in described constant temperature electric furnace, and described torsional moment sensor is connected with the coaxial of described stepper motor; It is characterized in that:
Described rotor comprise rotating shaft and with the paddle that is positioned at described rotating shaft bottom, described rotor, by described rotating shaft, is removably coaxially connected with the bottom of described stepper motor, is evenly equipped with several through holes on described paddle;
Described rotor stretches into turning barrel from the top of described turning barrel, and can in described turning barrel, rotate by the central shaft around described turning barrel.
2. a kind of starch viscosity measurement mechanism according to claim 1, is characterized in that: described constant temperature electric furnace comprises: air cooling equipment, and heating arrangement and temperature sensor, described heating arrangement is connected with described temperature sensor respectively with described air cooling equipment.
3. a kind of starch viscosity measurement mechanism according to claim 1, is characterized in that: described torsional moment sensor is coaxially connected with the bottom of described stepper motor, and the rotating shaft of described rotor is removably coaxially connected with the bottom of described torsional moment sensor.
4. a kind of starch viscosity measurement mechanism according to claim 3, is characterized in that: described rotor is to be removably coaxially connected with the bottom of described torsional moment sensor by being positioned at the rotary head at described rotating shaft top.
5. a kind of starch viscosity measurement mechanism according to claim 1, is characterized in that: the height of described paddle is greater than 1/2nd of described turning barrel height, and is less than 2/3rds of described turning barrel height.
6. according to a kind of starch viscosity measurement mechanism described in any one in claim 1～5, it is characterized in that: the through hole on described paddle on described paddle from bottom to up, be the through hole of several circles, regular polygon or the parallelogram of single-row distribution.
7. according to a kind of starch viscosity measurement mechanism described in any one in claim 1～5, it is characterized in that: several through holes that the through hole on described paddle distributes for be multiple row on described paddle.
8. a kind of starch viscosity measurement mechanism according to claim 1, is characterized in that: described stepper motor is fixed on a jacking gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420333717.3U CN203949842U (en) | 2014-06-20 | 2014-06-20 | A kind of starch viscosity measurement mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420333717.3U CN203949842U (en) | 2014-06-20 | 2014-06-20 | A kind of starch viscosity measurement mechanism |
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| CN203949842U true CN203949842U (en) | 2014-11-19 |
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| CN201420333717.3U Expired - Fee Related CN203949842U (en) | 2014-06-20 | 2014-06-20 | A kind of starch viscosity measurement mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116223306A (en) * | 2023-03-20 | 2023-06-06 | 山东林民公路材料有限公司 | Rubber asphalt viscosity testing device |
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116223306A (en) * | 2023-03-20 | 2023-06-06 | 山东林民公路材料有限公司 | Rubber asphalt viscosity testing device |
| CN116223306B (en) * | 2023-03-20 | 2023-09-08 | 山东林民公路材料有限公司 | Rubber asphalt viscosity testing device |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20190620 |