CN114034363B - Weighing device and method - Google Patents
Weighing device and method Download PDFInfo
- Publication number
- CN114034363B CN114034363B CN202111191558.9A CN202111191558A CN114034363B CN 114034363 B CN114034363 B CN 114034363B CN 202111191558 A CN202111191558 A CN 202111191558A CN 114034363 B CN114034363 B CN 114034363B
- Authority
- CN
- China
- Prior art keywords
- weighing
- base
- magnetic stirring
- stirring system
- weighing sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005303 weighing Methods 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000003760 magnetic stirring Methods 0.000 claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 12
- 230000009471 action Effects 0.000 abstract description 2
- 239000006052 feed supplement Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000003756 stirring Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/02—Arrangements of bearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/22—Weigh pans or other weighing receptacles; Weighing platforms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/06—Means for damping oscillations, e.g. of weigh beams
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
The invention discloses a weighing device, which comprises a base, a scale pan and a supporting device, wherein a first weighing sensor is arranged on the base; the upper part of the first weighing sensor is provided with a supporting device; the support device is provided with a scale pan; a magnetic stirring system is arranged below the scale pan; the magnetic stirring system is not contacted with the scale pan. The invention also discloses a weighing method, and the accurate weight of the feeding bottle can be obtained by subtracting the measured value of the first weighing sensor from the measured value of the second weighing sensor. Under the condition that the feeding bottle is not moved, the feed liquid in the feeding bottle is stirred, under the condition that the feed liquid is uniform, the weighing accuracy is improved, the action of manually and regularly shaking the feeding bottle is omitted, and the automation degree of feeding is improved.
Description
Technical Field
The invention belongs to the technical field of weighing, and particularly relates to a weighing device and a weighing method.
Background
During the biological culture process, the feeding operation is required according to the physiological characteristics of cells or microorganisms. To control the rate and total amount of feed, it is often necessary to weigh the feed bottle. In the weighing process, the feeding bottle needs to be placed on the weighing device in the whole process and cannot move, and once the feeding bottle moves, the weighing accuracy is affected, so that the biological culture result is affected.
However, the biological culture time is long, the time is tens of hours, the time is hundreds of hours, layering phenomenon is easy to occur after some feed liquid is kept for a long time, and the feed liquid is required to be kept uniform by manually shaking the feed supplementing bottle at regular time. In the shaking process, the feeding bottle is difficult to be static on the weighing device, and is easy to influence the weighing process.
Disclosure of Invention
In order to keep the uniformity of feed liquid under the condition of not moving the feed supplementing bottle, the invention provides a weighing device and a weighing method.
The invention aims to solve the technical problems in the background technology, and adopts the following technical scheme: the weighing device comprises a base, a scale pan and a supporting device, wherein a first weighing sensor is arranged on the base; the upper part of the first weighing sensor is provided with a supporting device;
the support device is provided with a scale pan; a magnetic stirring system is arranged below the scale pan; and a physical space is arranged between the magnetic stirring system and the scale pan, so that the magnetic stirring system is not in physical contact with the scale pan.
The magnetic stirring system of the present invention may be provided on a support means.
Further, the magnetic stirring system is arranged below the scale pan through a bracket; the bracket comprises an upper mounting bar, a lower mounting bar and a vertical connecting rod; the upper mounting bar and the lower mounting bar are connected through a vertical connecting rod; the magnetic stirring system is connected with the upper mounting bar; the lower mounting strip is connected with the base; the magnetic stirring system comprises a motor and magnetic steel arranged on a rotating shaft of the motor; the motor is arranged at the lower part of the upper mounting bar; the magnetic steel is arranged at the upper part of the upper mounting strip; the motor rotating shaft penetrates through the upper mounting strip.
Further, the support and the base are arranged separately or are connected into a whole.
Further, the first weighing sensor comprises a sensor body and a cushion block; the cushion block is arranged on the base; one end of the sensor body is arranged on the cushion block, and the other end of the sensor body is emptied; the supporting device is arranged on the sensor body.
Further, the invention is provided with a second weighing sensor for weighing the magnetic stirring system so as to measure the tensile force of the magnetic stirring system under the rotor a.
Further, the second load cell is disposed between the base and the bracket, or between the magnetic stirring system and the bracket, or at any position of an upper mounting bar, a lower mounting bar, and a vertical connecting rod of the bracket.
Further, the system also comprises a data acquisition system which is respectively connected with the first weighing sensor and the second weighing sensor in a signal way.
Further, a shockproof device is arranged between the first weighing sensor and the base.
The second object of the invention is to provide a weighing method, which adopts the device, and is as follows:
The weight actually measured by the first weighing sensor is the weight generated by adding the attractive force to the weight of the feeding bottle;
The magnitude of the pulling force measured by the second weighing sensor is the same as the magnitude of the attractive force, the directions are opposite, and the final weighing measurement result is calculated;
the measured value of the first weighing sensor is subtracted from the measured value of the second weighing sensor, so that the accurate weight of the feeding bottle can be obtained.
The beneficial effects are that:
1. according to the weighing device, the feed liquid in the feed bottle can be stirred under the condition that the feed bottle is not moved, so that the weighing accuracy can be improved under the condition that the feed liquid is uniform, the action of manually and regularly shaking the feed bottle is omitted, and the automation degree of feed is improved. When the first weighing sensor weighs the feed supplement bottle, the magnetic stirring system drives the rotor in the feed supplement bottle through magnetic force, and the feed liquid in the feed supplement bottle is stirred, so that layering phenomenon of the feed liquid is prevented.
2. When the magnetic stirring system is started, vibration is generated. If the magnetic stirring system is directly arranged below the scale pan, vibration of the magnetic stirring system can be transmitted to the first weighing sensor, so that the stability of weighing is reduced. After the magnetic stirring system is arranged on the bracket, the magnetic stirring system and the scale pan can be separated from each other and are not contacted with each other. Thus, even if the magnetic stirring system generates larger vibration during working, the weighing stability is not affected.
3. Because set up shock mounting (like rubber pad) between first weighing sensor and the base, reduced the vibrations of magnetic stirring system and to first weighing sensor's influence, consequently, form whole back with weighing device through the support, stability influence of weighing to the feed supplement bottle is less.
Drawings
FIG. 1 is a schematic view of a weighing apparatus of the present invention;
fig. 2 is a front view of the weighing apparatus of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples. Advantages and features of the invention will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
As shown in fig. 1 and 2, the weighing device of the invention comprises a base 1, a scale pan 4 and a supporting device 3, wherein a first weighing sensor 2 is arranged on the base 1; the upper part of the first weighing sensor is provided with a supporting device 3; the support device 3 is provided with a scale 4; a magnetic stirring system 5 is arranged below the scale pan 4; the magnetic stirring system 5 is not contacted with the scale pan 4. The magnetic stirring system 5 of the present invention may be arranged on the support means 3.
When the first weighing sensor 2 weighs the feed supplement bottle, the magnetic stirring system 5 drives the rotor a in the feed supplement bottle through magnetic force to stir feed liquid in the feed supplement bottle, so that layering phenomenon of the feed liquid is prevented. The first weighing sensor 2 comprises a sensor body 21 and a cushion block 22; the cushion block 22 is arranged on the base 1; one end of the sensor body 21 is arranged on the cushion block 22; the supporting device 3 is arranged on the sensor body 21; the other end of the sensor body 21 is emptied, and when the weight changes, the emptied end of the sensor body 21 is slightly bent and deformed, so that the feeding bottle is weighed. The magnetic stirring system 5 is arranged below the scale pan 4 through a bracket 6. The bracket 6 includes an upper mounting bar 61, a lower mounting bar 62, and a vertical connecting bar 63; the upper mounting bar 61 and the lower mounting bar 62 are connected through a vertical connecting rod 63; the magnetic stirring system 5 is connected with an upper mounting bar 61; the lower mounting bar 62 is connected to the base 1.
The bracket 6 and the first weighing sensor 2 are arranged at different positions of the base 1.
In order to obtain a high weighing stability, the support 6 can be arranged separately from the base 1. However, the separation arrangement also affects the convenience of the device. Thus, the bracket 6 can be integrally connected to the base 1.
And a shockproof device 7 is arranged between the first weighing sensor 2 and the base 1. The magnetic stirring system 5 comprises a motor 51 and magnetic steel 52 arranged on the rotating shaft of the motor 51; the motor 51 is disposed at the lower portion of the upper mounting bar 61; the magnetic steel 52 is arranged on the upper part of the upper mounting strip 61; the motor 51 is rotatably driven by an upper mounting bar 61.
Specifically, the rotating shaft of the motor 51 drives the magnetic steel 52 to rotate, and the rotor a arranged in the feeding bottle is acted by the magnetic force of the magnetic steel 52 and rotates along with the magnetic steel 52 to stir the feed liquid in the feeding bottle.
The invention also provides a second weighing sensor 8 for weighing the magnetic stirring system 5 so as to measure the tensile force of the magnetic stirring system 5 on the rotor a. During weighing, rotor a is subjected to the attractive force of magnetic stirring system 5. Thus, the weight actually measured by the first load cell 2 is the weight of the feeding bottle plus the weight generated by the attractive force. And because rotor a is the rotation that is incessant in weighing process, and the rotational speed also probably changes at any time as required, consequently rotor a's atress is also comparatively complicated, and the accuracy and the stability of symmetry weight result all can produce the influence. Particularly in the case of high feeding accuracy requirements, the attraction of the rotor a to the magnetic stirring system 5 is a large source of disturbance to the weighing result.
In order to eliminate the above-mentioned sources of interference, it is necessary to measure the attraction force of the rotor a to the magnetic stirring system 5. Since the forces are applied to each other, the magnitude of the attractive force of the rotor a to the magnetic stirring system 5 can be obtained by measuring the magnitude of the tensile force of the magnetic stirring system 5 to the rotor a. In order to measure the tensile force of the magnetic stirring system 5 to the rotor a, a second load cell 8 may be provided on the support 6, as in fig. 2. The second weighing sensor 8 can be arranged between the base 1 and the bracket 6, can also be arranged between the magnetic stirring system 5 and the bracket 6, and can also be arranged at any position of the bracket 6. The magnitude of the pulling force measured by the second weighing sensor 8 is the same as the magnitude of the attractive force, and the directions are opposite. When the final weighing measurement result is calculated, the accurate weight of the feeding bottle can be obtained by only subtracting the measured value of the first weighing sensor 2 from the measured value of the second weighing sensor 8. In addition, since the first load cell 2 and the second load cell 8 are both measured in real time, the disturbance of the rotation of the rotor a to the weighing can be eliminated.
The invention further comprises a data acquisition system, and the first weighing sensor 2 and the second weighing sensor 8 are respectively connected with the data acquisition system through signals. The first weighing sensor 2 is of a type of Metler MT1022, and the second weighing sensor 8 is of a type of European reach AT8107.
After the data acquisition system acquires the measurement signals of the first weighing sensor 2 and the second weighing sensor 8, the measurement signals are subtracted, and finally a weighing result is obtained.
The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (5)
1. The weighing device for biological culture comprises a base (1), a scale pan (4) and a supporting device (3), and is characterized in that a first weighing sensor (2) is arranged on the base (1); the upper part of the first weighing sensor (2) is provided with a supporting device (3); a scale pan (4) is arranged on the supporting device (3); a magnetic stirring system (5) is arranged below the scale pan (4); a physical space is arranged between the magnetic stirring system (5) and the scale pan (4);
The magnetic stirring system (5) is arranged below the scale pan (4) through a bracket (6); the bracket (6) comprises an upper mounting bar (61), a lower mounting bar (62) and a vertical connecting rod (63);
The upper mounting strip (61) and the lower mounting strip (62) are connected through a vertical connecting rod (63); the magnetic stirring system (5) is connected with an upper mounting strip (61); the lower mounting strip (62) is connected with the base (1);
the magnetic stirring system (5) comprises a motor (51) and magnetic steel (52) arranged on the rotating shaft of the motor (51); the motor (51) is arranged at the lower part of the upper mounting strip (61); the magnetic steel (52) is arranged at the upper part of the upper mounting strip (61); the rotating shaft of the motor (51) penetrates through the upper mounting strip (61); the first weighing sensor (2) comprises a sensor body (21) and a cushion block (22); the cushion block (22) is arranged on the base (1); one end of the sensor body (21) is arranged on the cushion block (22), and the other end of the sensor body is emptied; the supporting device (3) is arranged on the sensor body (21);
the bracket 6 and the first weighing sensor 2 are arranged at different positions of the base 1;
A second weighing sensor (8) for weighing the magnetic stirring system (5) is arranged;
The second weighing sensor (8) is arranged between the base (1) and the bracket (6) or between the magnetic stirring system (5) and the bracket (6).
2. A weighing device according to claim 1, characterized in that the support (6) is provided separately from the base (1) or that the support (6) is connected to the base (1) in one piece.
3. The weighing device according to claim 1, further comprising a data acquisition system, which is in signal connection with the first weighing cell (2) and the second weighing cell (8), respectively.
4. A weighing device according to claim 1, characterised in that a vibration-proof device (7) is arranged between the first load cell (2) and the base (1).
5. A weighing method employing a device according to any one of claims 1 to 4, characterized in that it comprises in particular the following:
the weight actually measured by the first weighing sensor (2) is the weight generated by adding the attractive force to the weight of the feeding bottle;
the magnitude of the pulling force measured by the second weighing sensor (8) is the same as the magnitude of the attractive force, the directions are opposite, and the final weighing measurement result is calculated;
and subtracting the measured value of the first weighing sensor (2) from the measured value of the second weighing sensor (8) to obtain the accurate weight of the feeding bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111191558.9A CN114034363B (en) | 2021-10-13 | 2021-10-13 | Weighing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111191558.9A CN114034363B (en) | 2021-10-13 | 2021-10-13 | Weighing device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114034363A CN114034363A (en) | 2022-02-11 |
| CN114034363B true CN114034363B (en) | 2024-05-03 |
Family
ID=80141210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111191558.9A Active CN114034363B (en) | 2021-10-13 | 2021-10-13 | Weighing device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114034363B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207285A (en) * | 1990-06-01 | 1993-05-04 | Sandvik Ab | Method of and apparatus for controlling the flow rate of outstreaming liquid metal from an inductively heated ladle |
| JPH08334404A (en) * | 1995-06-08 | 1996-12-17 | Kao Corp | Weighting method for substance to be weighed |
| CN102066886A (en) * | 2008-06-24 | 2011-05-18 | 艾卡工厂有限及两合公司 | Magnetic stirrer with mounting feet |
| CN110218643A (en) * | 2019-06-19 | 2019-09-10 | 华道(上海)生物医药有限公司 | A kind of magnetic agitation system with function of weighing |
| CN210570981U (en) * | 2019-07-16 | 2020-05-19 | 马清沛 | Electronic scale with stirring function |
| CN212357258U (en) * | 2020-03-11 | 2021-01-15 | 李见 | Collagen peptide production agitating unit |
-
2021
- 2021-10-13 CN CN202111191558.9A patent/CN114034363B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207285A (en) * | 1990-06-01 | 1993-05-04 | Sandvik Ab | Method of and apparatus for controlling the flow rate of outstreaming liquid metal from an inductively heated ladle |
| JPH08334404A (en) * | 1995-06-08 | 1996-12-17 | Kao Corp | Weighting method for substance to be weighed |
| CN102066886A (en) * | 2008-06-24 | 2011-05-18 | 艾卡工厂有限及两合公司 | Magnetic stirrer with mounting feet |
| CN110218643A (en) * | 2019-06-19 | 2019-09-10 | 华道(上海)生物医药有限公司 | A kind of magnetic agitation system with function of weighing |
| CN210570981U (en) * | 2019-07-16 | 2020-05-19 | 马清沛 | Electronic scale with stirring function |
| CN212357258U (en) * | 2020-03-11 | 2021-01-15 | 李见 | Collagen peptide production agitating unit |
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| Publication number | Publication date |
|---|---|
| CN114034363A (en) | 2022-02-11 |
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