CN114486633A - Fluidity on-line detection and control system of liquid sol products - Google Patents
Fluidity on-line detection and control system of liquid sol products Download PDFInfo
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- CN114486633A CN114486633A CN202111657634.0A CN202111657634A CN114486633A CN 114486633 A CN114486633 A CN 114486633A CN 202111657634 A CN202111657634 A CN 202111657634A CN 114486633 A CN114486633 A CN 114486633A
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- liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
- G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
- G01N11/06—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture by timing the outflow of a known quantity
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
Abstract
An online liquidity detection and control system for liquid sol products comprises an industrial control computer and a liquidity detection module; sampling and detecting the part of the product which flows out firstly by a fluidity detection module; the industrial control computer corrects the technological parameters of each device in the production process in real time according to the detection result of the fluidity detection module, and controls the valve of the production pipeline to transfer the unqualified product before the correction moment to the waste tank; the fluidity detection module comprises a rotary disc, a liquid pipe and a liquid level sensor; the liquid in the liquid pipe is centrifuged when the rotary disc rotates. The velocity information is obtained by calculating the time difference of the liquid between the two sensors. The speed information is compared to empirical values. In the production line, the specific numerical index reflecting the fluidity does not need to be known, and only the speed information of the qualified products under the same conditions is needed. And comparing the corresponding empirical values for different products. By the inspection and control system, the number of unqualified products can be controlled in a very small range.
Description
Technical Field
The invention belongs to the application of a computer control technology in production control, and particularly relates to an online detection and control system for the fluidity of a liquid sol product.
Background
Most of the hydrosol products have the flowability as an essential test item, and most of the tests are carried out by adopting a flowability tester in a laboratory. During large-scale flow production, sampling and detecting batch production products, and judging whether the popularity of the batch products is qualified. The problem that exists is mainly that if the detection is not qualified, the whole batch of products is not qualified.
Through finding in the production process backtracking of unqualified products, the main reason that unqualified products are produced is the deviation of process parameters, and the controllability of the feeding amount is better and generally no deviation exists. If the fluidity information is obtained in advance on line in the production process and the production process is checked and controlled in real time, the number of unqualified products can be greatly reduced.
The existing fluidity detecting instrument belongs to a precise detecting instrument, has long detecting period and is not suitable for application and on-line monitoring, and most of the fluidity of the product has low correlation degree with spectral characteristics, electrical characteristics and other characteristics which are easy to collect and detect. Therefore, the fluidity of the liquid sol products is difficult to detect on line.
Disclosure of Invention
In order to solve the technical problem, the invention provides an online liquidity detection and control system for a liquid sol product, which comprises an industrial control computer and is characterized by also comprising a liquidity detection module; sampling and detecting the first effluent part of the product by a fluidity detection module; the industrial control computer corrects the technological parameters of each device in the production process in real time according to the detection result of the fluidity detection module, and controls the valve of the production pipeline to transfer the unqualified product before the correction moment to the waste tank;
the fluidity detection module comprises a rotary disc, a liquid pipe and a liquid level sensor; the rotating axis of the rotating disc is vertical to the horizontal plane, and the rotating disc is driven by a motor; the liquid pipe is obliquely arranged on the turntable, and an opening at the bottom end of the liquid pipe is connected with the transition pipe through a rotary joint; the transition pipe is connected to the production pipeline through a three-way valve, and three ends of the three-way valve are respectively connected with the production pipeline, the transition pipe and the atmosphere; the opening at the top end of the liquid pipe faces between the outer edge direction of the turntable and the upward direction of the turntable; two liquid level sensors are connected to the liquid pipe and arranged one above the other; the rotating speed of the motor and the switch of the three-way valve are controlled by an industrial control computer, and the signal output end of the liquid level sensor is connected with the industrial control computer;
in the production process, firstly, the motor is controlled to drive the turntable to rotate, and the stable rotating speed state is achieved; then controlling a three-way valve switch to close a passage between the transition pipe and the production pipeline after the sample enters the liquid inlet pipe and open a passage between the atmosphere and the transition pipe; the two liquid level sensors sense the time difference of the height of the sample in the liquid pipe, and the flow rate of the sample is calculated by an industrial control computer;
comparing the sample flow rate with an empirical value, if the flow rate is qualified, controlling the product of the production pipeline to flow into a finished product tank, otherwise, controlling the product to flow into a waste tank;
the empirical value is obtained by adopting a liquidity detection module to collect and calculate qualified products.
The principle of the system is that liquid in the liquid pipe is centrifuged through the rotation of the turntable. The velocity information is obtained by calculating the time difference of the liquid between the two sensors.
The speed information is compared to empirical values. In the production line, the specific numerical index reflecting the fluidity does not need to be known, and only the speed information of the qualified products under the same conditions is needed.
And comparing the corresponding empirical values for different products.
By the inspection and control system, the number of unqualified products can be controlled in a very small range. When in use, a frequent sampling inspection mode can be adopted to control the production process.
Drawings
FIG. 1 is a schematic diagram of the present monitoring system;
FIG. 2 is a schematic flow diagram of the present monitoring system;
FIG. 3 is a schematic structural view of a flowability detection module;
in the figure, a rotary table 1, a liquid pipe 2, a liquid level sensor 3, a motor 4, a rotary joint 5, a transition pipe 6, a three-way valve 7, a production pipeline 8, a vertical section 9, a gear pair structure 10 and a support 11.
Detailed Description
The system is described below with reference to the drawings and engineering practice.
Referring to fig. 1 and 2, an online liquidity detection and control system for a liquid-sol product comprises an industrial control computer and a liquidity detection module; sampling and detecting the part of the product which flows out firstly by a fluidity detection module; the industrial control computer corrects the technological parameters of each device in the production process in real time according to the detection result of the fluidity detection module, and controls the valve of the production pipeline to transfer the unqualified product before the correction moment to the waste tank;
referring to fig. 3, the fluidity detection module includes a turntable 1, a liquid pipe 2, and a liquid level sensor 3; the rotating axis of the rotating disc is vertical to the horizontal plane, and the rotating disc is driven by a motor 4; the liquid pipe is obliquely arranged on the turntable, and the bottom opening of the liquid pipe is connected with the transition pipe 6 through the rotary joint 5; the transition pipe is connected to a production pipeline 8 through a three-way valve 7, and three ends of the three-way valve are respectively connected with the production pipeline, the transition pipe and the atmosphere; the opening at the top end of the liquid pipe faces between the outer edge direction of the turntable and the upward direction of the turntable; two liquid level sensors are connected to the liquid pipe and arranged one above the other; the rotating speed of the motor and the switch of the three-way valve are controlled by an industrial control computer, and the signal output end of the liquid level sensor is connected with the industrial control computer;
in the production process, firstly, the motor is controlled to drive the turntable to rotate, and the stable rotating speed state is achieved; then controlling a three-way valve switch to close a passage between the transition pipe and the production pipeline after the sample enters the liquid inlet pipe and open a passage between the atmosphere and the transition pipe; the two liquid level sensors sense the time difference of the height of the sample in the liquid pipe, and the flow rate of the sample is calculated by an industrial control computer;
comparing the sample flow rate with an empirical value, if the flow rate is qualified, controlling the product of the production pipeline to flow into a finished product tank, otherwise, controlling the product to flow into a waste tank;
the empirical value is obtained by adopting a liquidity detection module to collect and calculate qualified products.
In the example, the product is a subway carriage windshield sealant. In the construction of rail transit, the difference of the aging (embrittlement) experiment results of the connection sealant between the windshield and the vehicle body is large due to the difference of the temperature and humidity in the tunnel of each region. The manufacturer can adjust the formula to make a new model, and adopts the inspection and control system. Introducing a fluidity detection module in a production pipeline, accessing a plurality of electric control modules of the fluidity detection module through the PLC on site, and adjusting the PLC control software and the control software at the industrial control computer terminal.
The lower part of the liquid pipe is provided with a bent vertical section 9, and the axis of the vertical section vertically penetrates through the circle center of the turntable 1; the vertical section is fixedly connected with the turntable, and the bottom end of the vertical section is connected with a transition pipe 6 through a rotary joint 5; the transition pipe is wholly arranged below the rotary disc. The vertical section is connected with the motor 4 by the gear pair structure 10 through the teeth on the outer edge of the vertical section. The material of the liquid pipe is corrosion-resistant stainless steel. The level sensor 3 is an opto-electronic level sensor. When the control is to divert the rejected product to the reject tank, the amount of product flowing into the reject tank is greater than the actual amount of product in the production line. The three-way valve 7 adopts an electromagnetic three-way valve. In the production field, the fluidity detection module is connected to the production line through a bracket 11.
Claims (6)
1. An online liquidity detection and control system for liquid sol products comprises an industrial control computer and is characterized by further comprising a liquidity detection module; sampling and detecting the part of the product which flows out firstly by a fluidity detection module; the industrial control computer corrects the technological parameters of each device in the production process in real time according to the detection result of the fluidity detection module, and controls the valve of the production pipeline to transfer the unqualified product before the correction moment to the waste tank;
the fluidity detection module comprises a rotary disc, a liquid pipe and a liquid level sensor; the rotating axis of the rotating disc is vertical to the horizontal plane, and the rotating disc is driven by a motor; the liquid pipe is obliquely arranged on the turntable, and an opening at the bottom end of the liquid pipe is connected with the transition pipe through a rotary joint; the transition pipe is connected to the production pipeline through a three-way valve, and three ends of the three-way valve are respectively connected with the production pipeline, the transition pipe and the atmosphere; the opening at the top end of the liquid pipe faces between the outer edge direction of the turntable and the upward direction of the turntable; two liquid level sensors are connected to the liquid pipe and arranged one above the other; the rotating speed of the motor and the switch of the three-way valve are controlled by an industrial control computer, and the signal output end of the liquid level sensor is connected with the industrial control computer;
in the production process:
firstly, controlling a motor to drive a turntable to rotate and achieving a stable rotating speed state;
then controlling a three-way valve switch to close a passage between the transition pipe and the production pipeline after the sample enters the liquid inlet pipe and open a passage between the atmosphere and the transition pipe;
the two liquid level sensors sense the time difference between the height of the sample reaching the liquid pipe, and the flow rate of the sample is calculated by an industrial control computer;
comparing the sample flow rate with an empirical value, if the flow rate is qualified, controlling the product of the production pipeline to flow into a finished product tank, otherwise, controlling the product to flow into a waste tank;
the empirical value is obtained by adopting a liquidity detection module to collect and calculate qualified products.
2. The system for on-line detection and control of the fluidity of the aerosol product as claimed in claim 1, wherein the lower part of the liquid pipe is provided with a bent vertical section, and the axis of the vertical section vertically passes through the center of the rotary table; the vertical section is fixedly connected with the turntable, and the bottom end of the vertical section is connected with the transition pipe through a rotary joint; the transition pipe is wholly arranged below the rotary disc.
3. The system for on-line monitoring and controlling the fluidity of the aerosol product as claimed in claim 3, wherein the vertical section is connected with the motor by a gear pair structure through the teeth on the outer edge of the vertical section.
4. The system for on-line monitoring and controlling the fluidity of a sol product as set forth in claim 1, wherein the material of the liquid pipe is a corrosion-resistant stainless steel material.
5. The system for on-line monitoring and controlling the flowability of a liquid-sol product as claimed in claim 1, wherein the level sensor is an optoelectronic level sensor.
6. The system for on-line monitoring and controlling the flowability of a hydrosol-based product according to claim 1, wherein the amount of product flowing into the waste tank is greater than the actual amount of product in the production pipeline when the control of the flow of the rejected product to the waste tank is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111657634.0A CN114486633A (en) | 2021-12-30 | 2021-12-30 | Fluidity on-line detection and control system of liquid sol products |
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| CN202111657634.0A CN114486633A (en) | 2021-12-30 | 2021-12-30 | Fluidity on-line detection and control system of liquid sol products |
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| CN114486633A true CN114486633A (en) | 2022-05-13 |
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| CN202111657634.0A Pending CN114486633A (en) | 2021-12-30 | 2021-12-30 | Fluidity on-line detection and control system of liquid sol products |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110141A (en) * | 2023-10-18 | 2023-11-24 | 常州市立时灵胶粘材料有限公司 | Adhesive fluidity testing device and method |
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| EP2672261A1 (en) * | 2012-06-08 | 2013-12-11 | HMD BioMedical Inc. | Electrochemical test strip and corresponding analyzer |
| FR3013446A1 (en) * | 2013-11-21 | 2015-05-22 | Air Liquide | FLOW RATE FOR DIPHASIC FLUID WITH SIMULTANEOUS OR ALTERED MEASUREMENT OF THE GAS PHASE AND THE LIQUID PHASE |
| CN106940378A (en) * | 2017-03-28 | 2017-07-11 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | The feed liquor system and digital pcr system of digital pcr drop detection |
| CN110987725A (en) * | 2019-12-16 | 2020-04-10 | 武汉理工大学 | Integrated automatic detecting instrument for fluidity of grouting material |
-
2021
- 2021-12-30 CN CN202111657634.0A patent/CN114486633A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2672261A1 (en) * | 2012-06-08 | 2013-12-11 | HMD BioMedical Inc. | Electrochemical test strip and corresponding analyzer |
| FR3013446A1 (en) * | 2013-11-21 | 2015-05-22 | Air Liquide | FLOW RATE FOR DIPHASIC FLUID WITH SIMULTANEOUS OR ALTERED MEASUREMENT OF THE GAS PHASE AND THE LIQUID PHASE |
| CN106940378A (en) * | 2017-03-28 | 2017-07-11 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | The feed liquor system and digital pcr system of digital pcr drop detection |
| CN110987725A (en) * | 2019-12-16 | 2020-04-10 | 武汉理工大学 | Integrated automatic detecting instrument for fluidity of grouting material |
Non-Patent Citations (1)
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| 李玮华;杨秦建;: "液体燃料罐群微机监控管理系统的设计", 计算机工程与设计, no. 06, pages 251 - 254 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110141A (en) * | 2023-10-18 | 2023-11-24 | 常州市立时灵胶粘材料有限公司 | Adhesive fluidity testing device and method |
| CN117110141B (en) * | 2023-10-18 | 2023-12-26 | 常州市立时灵胶粘材料有限公司 | Adhesive fluidity testing device and method |
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