CN117664299A - Auxiliary quantitative weighing system - Google Patents
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- CN117664299A CN117664299A CN202311639646.XA CN202311639646A CN117664299A CN 117664299 A CN117664299 A CN 117664299A CN 202311639646 A CN202311639646 A CN 202311639646A CN 117664299 A CN117664299 A CN 117664299A
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- 238000005303 weighing Methods 0.000 title claims abstract description 120
- 238000002156 mixing Methods 0.000 claims abstract description 74
- 239000002994 raw material Substances 0.000 claims abstract description 63
- 230000003993 interaction Effects 0.000 claims description 31
- 230000001276 controlling effect Effects 0.000 claims description 18
- 238000005070 sampling Methods 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 9
- 230000000875 corresponding effect Effects 0.000 claims description 8
- 239000002158 endotoxin Substances 0.000 claims description 3
- 244000005700 microbiome Species 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 230000002596 correlated effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 239000003814 drug Substances 0.000 abstract description 10
- 238000002360 preparation method Methods 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
- 238000002347 injection Methods 0.000 description 15
- 239000007924 injection Substances 0.000 description 15
- 238000001514 detection method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 13
- 239000008215 water for injection Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 229940079593 drug Drugs 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000013586 microbial product Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Accessories For Mixers (AREA)
Abstract
The invention discloses an auxiliary quantitative weighing system, and relates to the medicine preparation technology. The auxiliary quantitative weighing system is provided with a controllable valve, a control module, a weighing module, a uniformly mixed container and a raw material container which are connected through a pipeline; the weighing module is used for weighing the uniformly mixed container. The controllable valve is arranged on a pipeline between the discharge port of the raw material container and the feed port of the mixing container. The control module is respectively connected with the controllable valve and the weighing module corresponding to the mixing container, and is used for controlling the opening and closing states of the controllable valve according to the data difference between the target data of the operator and the measured data of the weighing module, so that automatic quantitative weighing of raw materials is realized, feedback control of the controllable valve and quantitative conveying of the raw materials are finished by utilizing the control module respectively connected with the controllable valve and the weighing module, the automation degree of weighing operation is improved, the dependence on the operator is reduced, and manual waste is avoided.
Description
Technical Field
The embodiment of the invention relates to a medicine preparation technology, in particular to an auxiliary quantitative weighing system.
Background
In the production process of injection medicines, a large amount of injection water is required to be added to prepare a large volume of solution.
During the water filling weighing period, operators need to constantly observe the indication of the floor scale on site, and timely close the valve of the water for injection, so as to prevent the adding amount of the water for injection from exceeding the target weight.
The process of adding water for injection is time-consuming and requires long-term reliance on operators when preparing solutions in batches, resulting in a great deal of manual waste.
Disclosure of Invention
The invention provides an auxiliary quantitative weighing system, which is used for improving the automation degree of weighing operation, reducing the dependence on operators and avoiding the waste of manpower.
The embodiment of the invention provides an auxiliary quantitative weighing system, which comprises: the device comprises a controllable valve, a control module, a weighing module, a mixing container and a raw material container which are connected through a pipeline;
the weighing module is used for weighing the uniformly mixed container;
the controllable valve is arranged on a pipeline between the discharge port of the raw material container and the feed port of the mixing container;
the control module is respectively connected with the controllable valve and the weighing module corresponding to the mixing container, and is used for controlling the opening and closing states of the controllable valve according to the data difference value between the target data of the operator and the measured data of the weighing module.
Optionally, the control module comprises a man-machine interaction unit and a main control unit, wherein the man-machine interaction unit is connected with the main control unit and is used for carrying out man-machine interaction with an operator;
the main control unit is used for collecting actual measurement data of the weighing module and opening data of the controllable valve, controlling the opening and closing states of the controllable valve according to the data difference value, and controlling the opening and closing states of the controllable valve according to a control instruction of an operator, wherein the control priority of the control instruction is higher than that of the data difference value.
Optionally, the man-machine interaction unit includes a touch screen, where the touch screen is configured to display at least one of a range of the weighing module, the target data, the measured data, and the data difference value, and determine the target data according to an operation of an operator.
Optionally, the master control unit includes a programmable logic controller.
Optionally, the auxiliary quantitative weighing system further comprises a manual valve, wherein the manual valve is arranged on a pipeline between a discharge hole of the raw material container and the controllable valve, and the manual valve is used for controlling the raw material amount entering the mixing container according to manual operation under the condition that the controllable valve is normally opened.
Optionally, the control module is further configured to control the controllable valve to close to stop feeding the mixing container if the data difference is equal to 0.
Optionally, the control module is further configured to control the controllable valve to close to stop feeding the blending container when the data difference value is equal to a critical value, where the critical value is positively correlated to a pipe volume, and the pipe volume is a volume of a pipe between the controllable valve and a feed inlet of the blending container;
the control module is also used for controlling the controllable valve to empty the pipeline between the controllable valve and the feed inlet of the mixing container after the controllable valve is closed, so that raw materials stored in the pipeline between the controllable valve and the feed inlet of the mixing container enter the mixing container.
Optionally, the controllable valve comprises a pneumatic solenoid valve.
Optionally, the weighing module comprises at least two floor scales with different ranges.
Optionally, the controllable valve is subjected to alkali liquor soaking treatment before installation and passes through sampling detection, wherein the sampling detection comprises sampling conductivity detection, sampling organic matter detection, sampling microorganism detection and sampling endotoxin detection.
The auxiliary quantitative weighing system provided by the invention is provided with a controllable valve, a control module, a weighing module, a mixing container and a raw material container which are connected through a pipeline; the weighing module is used for weighing the uniformly mixed container. The controllable valve is arranged on a pipeline between the discharge port of the raw material container and the feed port of the mixing container. The control module is respectively connected with the controllable valve and the weighing module corresponding to the mixing container, and is used for controlling the opening and closing states of the controllable valve according to the data difference between the target data of the operator and the measured data of the weighing module, so that automatic quantitative weighing of raw materials is realized, feedback control of the controllable valve and quantitative conveying of the raw materials are finished by utilizing the control module respectively connected with the controllable valve and the weighing module, the automation degree of weighing operation is improved, the dependence on the operator is reduced, and manual waste is avoided.
Drawings
FIG. 1 shows a schematic diagram of the composition of a quantitative weighing system of the prior art;
FIG. 2 is a schematic diagram of an auxiliary quantitative device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an auxiliary quantitative weighing system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the composition of a further auxiliary quantitative weighing system according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the composition of a further auxiliary quantitative weighing system according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an operation interface of a man-machine interaction unit according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
As described in the background, in the production of injectable drugs (e.g., antibody-conjugated drugs), the preparation of large volumes of solutions requires the addition of large amounts of water for injection (also known as WFI). Fig. 1 shows a schematic composition diagram of a quantitative weighing system in the prior art, and in combination with fig. 1, a conventional weighing system includes a raw material container, a mixing container, a weighing module, a manual switching valve and an infusion pipeline, the mixing container is disposed on the weighing module, and the manual switching valve is disposed on the infusion pipeline communicating the raw material container and the mixing container. During fill weighing, the operator needs to constantly observe the indication of the weighing module in the field and close the manual on-off valve when the indication is close to the target data. However, the production of injectable medicaments requires the preparation of large volumes of solution, and depending on the throughput of each time the amount of injectable water to be added is often large, and the injection process often requires more than one hour or even several hours.
In order to solve the foregoing problems, an embodiment of the present invention provides an auxiliary quantitative weighing system. Fig. 2 is a schematic diagram of the composition of an auxiliary quantitative device according to an embodiment of the present invention, and referring to fig. 2, an auxiliary quantitative weighing system 100 includes a controllable valve T, a control module 105, a weighing module 104, a mixing container 103 and a raw material container 101 connected via a pipe 102. The weighing module 104 is used for weighing the mixing container 103. The controllable valve T is arranged on a pipeline 102 between a discharge port of the raw material container 101 and a feed port of the mixing container 103. The control module 105 is respectively connected with the controllable valve T and the weighing module 104 corresponding to the mixing container 103, and the control module 105 is used for controlling the opening and closing states of the controllable valve T according to the data difference between the target data of the operator and the measured data of the weighing module 104.
Specifically, the raw material container 101 refers to a temporary storage container in which a liquid raw material is placed, and the raw material container 101 may include a water raw material bag for injection, for example. Mixing vessel 103 refers to a raw material mixing and blending vessel, and mixing vessel 103 may include, for example, a mixing tank and a stirring bag disposed in the mixing tank. The mixing container 103 may mix and agitate various raw materials for preparing the medicine, and may also be used as a weighing container for raw materials. The weighing module 104 refers to a metering device for weighing the blending container 103, and the weighing module 104 may include at least one floor scale, where the blending container 103 is disposed on a corresponding floor scale, and the floor scale may weigh and display weight data of the blending container 103 thereon. The raw material container 101 and the mixing container 103 are communicated through a pipeline 102, and the pipeline 102 can be a silica gel pipe.
The controllable valve T refers to an automatic controllable valve, the opening and the on-off of which are regulated according to a control signal sent by the control module 105, and illustratively the controllable valve T may comprise a pneumatic solenoid valve, and the controllable valve T is subjected to an alkaline solution soaking treatment before being installed and is subjected to sampling detection, wherein the sampling detection comprises sampling conductivity detection, sampling organic matter detection, sampling microorganism detection and sampling endotoxin detection, so that the auxiliary quantitative weighing system 100 can meet good production specifications (also referred to as GMP). The controllable valve T is arranged on a pipeline 102 between a discharge hole of the raw material container 101 and a feed hole of the mixing container 103 and is used for controlling the on-off of the pipeline 102 so as to realize the start-stop control of raw material supply of the mixing container 103. The control module 105 is a data collection, processing, analysis and control center of the auxiliary quantitative weighing system 100, and can acquire target data of an operator and actual measurement data of the weighing module 104, and control the opening and closing states of the controllable valves T according to a difference value between the target data and the actual measurement data, so as to realize feedback control of the controllable valves T, so that the controllable valves T can be closed in time when the raw material amount in the mixing container 103 meets the target of the operator, wherein the opening and closing states of the controllable valves T include opening, closing and a specific opening percentage. Illustratively, the control module 105 may include a human-machine interaction device and a programmable logic controller.
Illustratively, the weight of the injection solution added to the mixing vessel 103 is controlled by the auxiliary quantitative weighing system 100 during the preparation of the solution for injection of the drug. In this application scenario, the raw material container 101 contains water for injection. The operator inputs 600kg of target data by using the man-machine interaction device, and the programmable logic controller can collect the actual measurement data of the floor scale after receiving 600kg of target data, wherein the actual measurement data is the net weight data after peeling, and the actual measurement data is 0kg before the injection water is introduced into the mixing container 103. Under the condition that the data difference between the target data and the measured data is larger than 0, the programmable logic controller controls the controllable valve T to be opened, so that the water for injection in the raw material container 101 enters the mixing tank through the pipeline 102. When the data difference between the target data and the measured data is equal to 0, the programmable logic controller controls the controllable valve T to be closed, so that the injection water in the raw material container 101 stops entering the mixing tank, and the quantitative addition of the injection water is completed.
The auxiliary quantitative weighing system provided by the embodiment is provided with a controllable valve, a control module, a weighing module, a mixing container and a raw material container which are connected through a pipeline; the weighing module is used for weighing the uniformly mixed container. The controllable valve is arranged on a pipeline between the discharge port of the raw material container and the feed port of the mixing container. The control module is respectively connected with the weighing modules corresponding to the controllable valves and the mixing container, and is used for controlling the opening and closing states of the controllable valves according to the data difference between the target data of the operators and the measured data of the weighing modules, so that automatic quantitative weighing of raw materials is realized, feedback control of the controllable valves and quantitative conveying of the raw materials are finished by utilizing the control modules respectively connected with the controllable valves and the weighing modules, the automation degree of weighing operation is improved, dependence on the operators is reduced, and especially, the operation risk of the operators can be reduced when the preparation of microbial products or high-risk medicines is involved, and manual waste can be reduced.
Optionally, fig. 3 is a schematic diagram of the composition of another auxiliary quantitative weighing system according to an embodiment of the present invention, and on the basis of any of the foregoing embodiments, referring to fig. 3, the control module 105 includes a man-machine interaction unit 201 and a main control unit 202, where the man-machine interaction unit 201 is connected to the main control unit 202, and the man-machine interaction unit 201 is used for performing man-machine interaction with an operator. The main control unit 202 is configured to collect actual measurement data of the weighing module 104 and opening data of the controllable valve T, and also control an open/close state of the controllable valve T according to a data difference value, and also control the open/close state of the controllable valve T according to a control instruction of an operator, where a control priority of the control instruction is higher than the data difference value.
Specifically, the man-machine interaction unit 201 refers to an operation component capable of implementing information interaction between an operator and an operation module, and illustratively, the man-machine interaction unit 201 may include a touch screen, fig. 4 is a schematic diagram of a touch screen display interface provided by an embodiment of the present invention, and in combination with fig. 4, the touch screen may display at least one data of a range, target data, measured data and a data difference value of the weighing module 104, or may determine target data according to an operation of the operator on a functional area corresponding to the touch screen. The touch screen may also display the communication status between the main control unit 202 and the weighing module 104.
The master control unit 202 refers to a component that performs data acquisition, analysis, and processing, and the master control unit 202 may include a programmable logic controller, for example. The main control unit 202 is connected with the controllable valve T and the weighing module 104 respectively, and can collect the measured data of the weighing module 104 and the opening data of the controllable valve T after receiving the target data sent by the man-machine interaction unit 201, and control the opening and closing states of the controllable valve T according to the data difference between the target data and the measured data. The man-machine interaction unit 201 may also generate control instructions according to the operation of the operator. In the process of controlling the opening and closing states of the controllable valve T, if the main control unit 202 detects a control instruction sent by the man-machine interaction unit 201, the main control unit 202 preferentially adjusts the opening or the on-off of the controllable valve T according to the control instruction.
Illustratively, during the time that the controllable valve T is open to deliver material, the operator controls the controllable valve T to close if he manipulates a stop function area on the display screen. Until the operator operates the water adding functional area on the display screen, the programmable controller controls the controllable valve T to be turned on, so that the water for injection in the raw material container 101 is restored to flow to the mixing tank. When the data difference between the target data and the measured data is equal to 0, the programmable logic controller controls the controllable valve T to be closed, so that the injection water in the raw material container 101 stops entering the mixing tank, and the quantitative addition of the injection water is completed.
The control module in the auxiliary quantitative weighing system that this embodiment provided is provided with human-computer interaction unit and master control unit, and human-computer interaction unit is connected with master control unit, and human-computer interaction unit is used for carrying out human-computer interaction with operating personnel. The main control unit is used for collecting actual measurement data of the weighing module and opening data of the controllable valve, controlling the opening and closing states of the controllable valve according to the data difference value, and controlling the opening and closing states of the controllable valve according to control instructions of operators, wherein the control priority of the control instructions is higher than that of the data difference value, automatic quantitative weighing is achieved, the man-machine interaction unit can also introduce temporary control instructions of operators so as to cope with special situations of replacing raw material containers and the like, and reliability of the auxiliary quantitative weighing system is improved.
Optionally, fig. 4 is a schematic diagram of the composition of another auxiliary quantitative weighing system according to an embodiment of the present invention, and on the basis of any of the foregoing embodiments, in combination with fig. 4, the auxiliary quantitative weighing system 100 further includes a manual valve M, where the manual valve M is disposed on a pipeline 102 between a discharge port of the raw material container 101 and the controllable valve T, and the manual valve M is used to control the amount of raw material entering the mixing container 103 according to a manual operation under a condition that the controllable valve T is normally opened.
Specifically, the manual valve M is a diaphragm valve for manually switching the open/close state and the degree of opening, and is provided in the pipe 102 between the discharge port of the raw material container 101 and the controllable valve T. On the one hand, the manual valve M is provided to ensure the sealing degree of the raw material container 101 without conveying the raw material. On the other hand, in the case where the controllable valve T is normally open, the operator can control the amount of raw material delivered by operating the manual valve M.
The control module 105 may also be configured to control the controllable valve T to close if the data difference is equal to a preset value, wherein the preset value is greater than 0, the error allowance, and the threshold value. The operator can start the manual valve M according to the actual demand to finish the addition of the residual raw materials until the data difference between the target data and the measured data is equal to 0. Wherein, the error allowance for judging the data difference value to be equal to 0 is within +/-1% of the target data.
Illustratively, the weight of the injection solution added to the mixing vessel 103 is controlled by the auxiliary quantitative weighing system 100 during the preparation of the solution for injection of the drug. In this application scenario, the raw material container 101 contains water for injection. For example, the controllable valve T may be a normally open valve. When the raw materials need to be weighed, an operator can input target data by utilizing a human-computer interaction device and then operate the manual valve M to be completely opened. After receiving the target data, the programmable logic controller may collect the measured data of the floor scale 501, where the measured data is the net weight data after peeling, and the measured data is 0kg before the water for injection is introduced into the mixing container 103. Under the condition that the data difference between the target data and the measured data is larger than 0, the programmable logic controller controls the controllable valve T to be opened, so that the water for injection in the raw material container 101 enters the mixing tank through the pipeline 102. When the data difference between the target data and the measured data is equal to a preset value, the programmable logic controller controls the controllable valve T to be closed, so that the water for injection in the raw material container 101 stops entering the mixing tank. At this time, the operator may manually decrease the opening of the manual valve M, and further operate the man-machine interaction unit 201 to control the controllable valve T to be fully opened. Thereafter, the operator can adjust the opening degree of the manual valve M according to his own experience and observation. When the measured data is equal to the target data, the operator controls the manual valve M to be completely closed, and stops the injection water in the raw material container 101 from entering the mixing tank, and at this time, the quantitative addition of the injection water is completed.
The auxiliary quantitative weighing system provided by the embodiment is provided with the manual valve, the manual valve is arranged on a pipeline between the discharge hole of the raw material container and the controllable valve, and the manual valve is used for controlling the raw material quantity entering the mixing container according to manual operation under the condition that the controllable valve is normally opened, so that manual quantitative weighing is realized, a quantitative weighing scheme is enriched, the reliability of closing a pipeline is ensured by using a manual mode, and the reliability and the weighing accuracy of the auxiliary quantitative weighing system are further improved.
Optionally, with continued reference to fig. 3 based on any of the foregoing embodiments, the control module 105 is further configured to control the controllable valve T to close to stop feeding the mixing container 103 if the data difference is equal to 0, where the error of the data difference is within ±1% of the target data, so as to achieve accurate and quantitative weighing of the raw materials.
Optionally, with continued reference to fig. 3, in any of the foregoing embodiments, the control module 105 is further configured to control the controllable valve T to close to stop feeding the mixing container 103 when the data difference is equal to a threshold value, where the threshold value is a preset value greater than 0 but close to 0, and the threshold value is positively related to the volume of the pipe 102, and the volume of the pipe 102 is the volume of the pipe 102 between the controllable valve T and the inlet of the mixing container 103.
After the controllable valve T is closed, the control module 105 may automatically control the controllable valve T to empty the pipeline 102 between the controllable valve T and the feed inlet of the mixing container 103, so as to introduce the raw material stored in the pipeline 102 between the controllable valve T and the feed inlet of the mixing container 103 into the mixing container 103. In addition, after the controllable valve T is closed, the control module 105 may also control the controllable valve T to perform an emptying process on the pipeline 102 between the controllable valve T and the feed inlet of the mixing container 103 in response to an emptying instruction of an operator, so as to enable the raw material stored in the pipeline 102 between the controllable valve T and the feed inlet of the mixing container 103 to enter the mixing container 103. The critical value provides a decision criterion for the control module 105 to control the closing of the controllable valve T, so that the control module 105 empties the accumulated raw materials in the pipeline 102 into the mixing container 103 by controlling the emptying of the controllable valve T, thereby not only reducing the weighing error and improving the reliability of the auxiliary quantitative weighing system 100, but also reducing the waste of the raw materials.
Optionally, fig. 5 is a schematic diagram of the composition of a further auxiliary quantitative weighing system according to an embodiment of the present invention, where, based on any of the foregoing embodiments, in conjunction with fig. 5, the weighing module 104 includes at least two floor scales 501 with different ranges (only the case where the weighing module 104 includes two floor scales 501 is shown as an example). The control module 105 may switch the floor scales 501 communicatively connected thereto to control the controllable valve T according to the measured data of the different floor scales 501.
For example, fig. 6 is a schematic diagram of an operation interface of a man-machine interaction unit according to an embodiment of the present invention, and referring to fig. 6, an operator may carry a blending container 103 onto a corresponding floor scale 501 according to a requirement, further operate a communication switching area on the man-machine interaction unit 201 to start a communication connection between the floor scale 501 where the blending container 103 is located and a main control unit 202, close communication connections between other floor scales 501 and the main control unit 202, and then operate a charging function area and a weight setting area to start a process of braking auxiliary quantitative weighing.
The inventor of the application also makes a series of weighing error experiment detection aiming at the auxiliary quantitative weighing system in the embodiment, the adopted raw materials are water for injection, and the floor scales adopt two floor scales with the model of IFS4-300NL.MIS2 and IFS4-1500RR.MIS2, wherein the measuring range of the IFS4-300NL.MIS2 floor scale is 300kg, and the measuring range of the IFS4-1500RR.MIS2 floor scale is 1500kg. The controllable valve employs a capped metal aseptic diaphragm valve 625. The following is an experimental data table obtained by adopting different floor scales, and all experimental data show that the weighing error of the auxiliary quantitative weighing system in the embodiment of the invention is far less than 1%, and the reliability and the automation degree are high.
| Target data | Final measured data | Error value |
| 50.00kg | 50.32kg | 0.32kg |
| 100.00kg | 100.24kg | 0.24kg |
| 200.00kg | 200.16kg | 0.16kg |
Table 1 table of experimental data obtained using IFS4-300nl.mis2 floor scale
| Target data | Final measured data | Error value |
| 50.00kg | 50.32kg | 0.32kg |
| 100.00kg | 100.24kg | 0.24kg |
| 200.00kg | 200.16kg | 0.16kg |
TABLE 2 Table of experimental data obtained using IFS4-1500NL.MIS2 floor scale
The weighing module in the auxiliary quantitative weighing system provided by the embodiment is provided with at least two floor scales with different measuring ranges, and the control module can switch the floor scales in communication connection with the floor scales so as to control the controllable valve according to the measured data of different floor scales, thereby realizing multi-range weighing and expanding the application range of the weighing system.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. An auxiliary quantitative weighing system, comprising: the device comprises a controllable valve, a control module, a weighing module, a mixing container and a raw material container which are connected through a pipeline;
the weighing module is used for weighing the uniformly mixed container;
the controllable valve is arranged on a pipeline between the discharge port of the raw material container and the feed port of the mixing container;
the control module is respectively connected with the controllable valve and the weighing module corresponding to the mixing container, and is used for controlling the opening and closing states of the controllable valve according to the data difference value between the target data of the operator and the measured data of the weighing module.
2. The auxiliary quantitative weighing system according to any one of claims 1, wherein the control module comprises a man-machine interaction unit and a main control unit, the man-machine interaction unit is connected with the main control unit, and the man-machine interaction unit is used for carrying out man-machine interaction with an operator;
the main control unit is used for collecting actual measurement data of the weighing module and opening data of the controllable valve, controlling the opening and closing states of the controllable valve according to the data difference value, and controlling the opening and closing states of the controllable valve according to a control instruction of an operator, wherein the control priority of the control instruction is higher than that of the data difference value.
3. The auxiliary quantitative weighing system according to claim 2, wherein said human-machine interaction unit comprises a touch screen for displaying at least one of a range of said weighing module, said target data, said measured data and said data difference, said target data being also determined according to an operation of an operator.
4. The auxiliary quantitative weighing system of claim 2, wherein said main control unit comprises a programmable logic controller.
5. The auxiliary quantitative weighing system according to claim 1, further comprising a manual valve disposed on a line between the discharge port of the raw material container and the controllable valve, the manual valve being configured to control the amount of raw material entering the blending container according to a manual operation with the controllable valve being normally open.
6. The auxiliary basis weight weighing system according to any one of claims 1-5, wherein said control module is further configured to control said controllable valve to close to stop feeding said blending container if said data difference is equal to 0.
7. The auxiliary quantitative weighing system according to any one of claims 1-5, wherein said control module is further configured to control said controllable valve to close to stop feeding said mixing container if said data difference is equal to a threshold value, wherein said threshold value is positively correlated to a line volume, said line volume being a volume of a line between said controllable valve and a feed inlet of said mixing container;
the control module is also used for controlling the controllable valve to empty the pipeline between the controllable valve and the feed inlet of the mixing container after the controllable valve is closed, so that raw materials stored in the pipeline between the controllable valve and the feed inlet of the mixing container enter the mixing container.
8. The auxiliary basis weight weighing system according to any one of claims 1-5, wherein said controllable valve comprises a pneumatic solenoid valve.
9. The auxiliary quantitative weighing system according to any one of claims 1 to 5, wherein said weighing module comprises at least two scales of different ranges.
10. The auxiliary quantitative weighing system according to any one of claims 1 to 5, wherein said controllable valve is subjected to an alkaline lye soaking treatment prior to installation and passes a sampling test, wherein said sampling test comprises a sampling conductivity test, a sampling organism test, a sampling microorganism test and a sampling endotoxin test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311639646.XA CN117664299A (en) | 2023-11-30 | 2023-11-30 | Auxiliary quantitative weighing system |
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