CN116899760A - An intelligent control type high-precision mineral processing and dosing machine - Google Patents
An intelligent control type high-precision mineral processing and dosing machine Download PDFInfo
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- CN116899760A CN116899760A CN202310916027.4A CN202310916027A CN116899760A CN 116899760 A CN116899760 A CN 116899760A CN 202310916027 A CN202310916027 A CN 202310916027A CN 116899760 A CN116899760 A CN 116899760A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/145—Feed mechanisms for reagents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1493—Flotation machines with means for establishing a specified flow pattern
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Abstract
The intelligent control type high-precision mineral dressing and dosing machine comprises a dosing system, an auxiliary functional component and a liquid-gas combination electromagnetic valve, a flow breaking sensor, a pressure sensor and a temperature sensor, wherein the dosing system comprises a PLC, a touch screen, a numerical control medicament pump or a numerical control regulating valve and an electronic flowmeter, and the auxiliary functional component comprises a filter, a flow divider and a flow breaking control valve. The principle is as follows: in the dosing process, the electronic flowmeter automatically transmits the on-line detected liquid medicine flow signal to the PLC, and the PLC automatically controls the numerical control medicament pump or the numerical control regulating valve to regulate the liquid medicine flow, so that the reading value of the flowmeter is consistent with the set flow. When the flow rate changes due to the pressure change of the liquid medicine in and out, the system can automatically adjust the liquid medicine to the set flow rate. The device is characterized in that the device is used for continuously adding medicines, does not need to be provided with a constant pressure or constant liquid level medicine storage tank, does not need to be calibrated in flow, is not limited to self-flowing or lifting, can count and display the dosage, is suitable for various liquid mineral processing medicaments such as water-based, oily, high-viscosity and corrosive medicaments, and has the function of automatically cleaning medicine paths by clean water and compressed air.
Description
Technical field:
the intelligent control type mineral dressing and dosing device is mainly used in the technical field of mineral dressing (mineral processing engineering), and particularly is intelligent control type mineral dressing and dosing device which is capable of continuously dosing, does not need to be provided with a constant pressure or constant liquid level drug storage tank, does not need to be calibrated in flow, is not limited to gravity flow or lifting, can count and display dosing amount, is wide in application range, has the function of automatically cleaning a drug path by clean water and compressed air, can automatically adjust and keep constant output along with the change of the pressure of liquid medicine entering and exiting, is convenient to install, is simple to operate and is high in metering accuracy. The chemical feeder can also be used in the fields of chemical industry, metallurgy, environmental protection and the like.
The background technology is as follows:
the ore dressing chemical adding machine is a device (equipment) for quantitatively conveying one or more ore dressing chemical solutions (or liquid chemical raw chemicals, hereinafter referred to as chemical liquid) from chemical liquid storage containers to specific ore dressing production equipment or places in a certain time according to the ore dressing process requirements, and has two modes of continuous chemical adding and intermittent chemical adding according to the chemical liquid flowing mode. The beneficiation dosing machine is an important technical auxiliary device of a beneficiation production line.
The constant pressure constant flow type dosing machine which is composed of a constant liquid level drug storage tank, a PLC (Programmable Logic Controller, a programmable logic controller, an industrial computer with functions of on-off logic control, analog quantity control, motion control, process control, data processing, communication, networking and the like and a solenoid valve or a pneumatic valve controlled by the same is specially used for industrial control, and is shown in figure 1. In fig. 1, the float valve 2 for keeping the liquid level of the constant liquid level medicine storage tank 3 stable can be replaced by a circulating pump. The lower part of the constant liquid level medicine storage tank 3 is provided with an outflow pipe with a manual regulating valve 4 and an electromagnetic valve (or a pneumatic valve) 5. The working principle is as follows: the opening degree of the manual regulating valve 4 is regulated and set in advance, the liquid medicine amount continuously flowing out in unit time, namely the instantaneous flow rate, is measured and is input into a PLC (the instantaneous flow rate of the liquid out of the constant liquid level medicine storage tank is a fixed value when the valve opening degree is fixed), and when medicine is added, the PLC automatically calculates and controls the electromagnetic valve (or the pneumatic valve) 5 to be periodically opened and closed according to different time according to the medicine adding amount instruction, so that the liquid medicine amount intermittently flowing out is consistent with the target medicine adding amount. The constant-pressure constant-flow type dosing machine is operated by a man-machine interaction touch screen, the dosing amount is set simply, and the total dosing amount can be counted and inquired. The constant pressure constant flow type dosing machine has the main defects that: (1) the performance is poor, the function is single, only the liquid medicine metering function is provided, the pipeline is easy to block, the dosage error is large (generally not less than 2%), and the liquid medicine is required to be manually taken from time to time for flow calibration so as to correct the error; (2) the operation is inconvenient, when the dosage change is large, the manual regulating valve and the calibrated flow are required to be frequently operated, and the automatic meaning is lost; (3) the configuration is inflexible, the manual regulating valve and the electromagnetic valve (or the pneumatic valve) are required to be integrally installed and used with the constant liquid level medicine storage tank, and only intermittent medicine feeding can be realized in a self-flowing mode, the automatic medicine feeding device has no lifting function, the equipment is large in size and weight, a certain height difference is required between the installation position and a medicine feeding place, a high-level medicine feeding platform is required to be specially arranged, the capital investment is increased, and the medicine transportation, the equipment operation and the management are inconvenient. (4) The method is applicable to the mineral processing medicament with limited medicament types, poor medicament adding control effect on the mineral processing medicament with high viscosity and easy precipitation, large error and even incapability of using.
The inventor's filed patent (application number: 202321847911.9) "a self-priming and lifting numerical control ore dressing precision feeder", has more abundant numerical control and statistics functions than the constant pressure constant flow feeder, and overcomes the defects of poor performance, less functions, inconvenient configuration and operation, limited applicable medicament types and the like, but the intelligent control technology is limited, the change of the liquid medicine inlet and outlet pressure has a certain influence on the dosing precision, a constant liquid medicine storage tank still needs to be additionally arranged, and the parameters of a PLC flow control mathematical model need to be checked according to the on-site working conditions after equipment and a medicine path pipeline are installed and before the first starting.
The utility model comprises the following steps:
the utility model aims to provide an intelligent control type high-precision mineral processing chemical feeder capable of automatically adjusting and maintaining constant output of liquid medicine according to pressure change of liquid medicine in and out, which not only has the functions of numerical control, statistics and the like which are richer than those of the constant-pressure constant-flow type chemical feeder of the current main mineral processing chemical feeder in the background art, but also overcomes the defects of poor performance, single function, inconvenient configuration and operation, limited applicable chemical types and the like, and meanwhile, is completely different from a self-suction and lifting numerical control precise mineral processing chemical feeder which is filed by the inventor before (application number: 202321847911.9) in terms of chemical feeding control principle, can be complementary with the self-suction and lifting numerical control precise mineral processing chemical feeder, and becomes widely used chemical feeder in future mineral processing production.
The dosing machine is suitable for various liquid medicaments such as water-based, oily, high-viscosity, acidic, alkaline and the like used in the existing ore dressing, a constant pressure or constant liquid level medicament storage tank is not required to be arranged in the use process, flow calibration is not required, dosing metering precision is high (not more than 1 percent and is not influenced by the dosage and the liquid medicament inlet and outlet pressure in the design range), and the liquid medicament is stable to convey and is continuously dosed; the equipment has small volume and light weight, has optional pumping and self-priming functions, is not limited to one mode of self-flowing dosing, does not need to be specially provided with a high-level dosing platform, and can be arranged at any position on site; the automatic cleaning device has the function of automatically cleaning the medicine path by clean water and compressed air, and can monitor or control the temperature of medicine liquid, the temperature of a motor, the output pressure of the medicine liquid, the pressure of the input compressed air, the cutoff of the medicine liquid, and the like.
To achieve the above object, the present utility model employs a dosing system (for example, a numerical control dosing pump adjusts dosing amount) as shown in fig. 2. The basic components of the dosing system are a PLC 2, an industrial control touch screen 3, a numerical control medicament pump 4 and an electronic flowmeter 5, when in operation, the liquid medicine flows out of the medicament storage tank in a self-flowing or medicament pump suction mode, and is conveyed to a dosing site in a self-flowing or pressure mode through a filter (deslagging) device 1, the numerical control medicament pump 4, the electronic flowmeter 5 and a break control valve 6. The dosing system can comprise a PLC or a plurality of PLCs, and also can comprise an industrial control touch screen or a plurality of industrial control touch screens; one PLC can control one medicine path or a plurality of medicine paths; a medicine path is provided with a numerical control medicine pump, an electronic flowmeter and a flow breaking control valve. The industrial control touch screen is a man-machine interaction configuration display screen which works in cooperation with the PLC and inputs instructions in a touch mode. The numerical control medicament pump is a gear pump or other pumps which are driven by a stepping motor or a servo motor or a variable frequency motor which are controlled by a PLC and have the functions of lifting and sending and certain self-absorption. The numerical control medicament pump also can not have self-priming function, and can be replaced by a numerical control regulating valve, so that the medicinal liquid can flow to the numerical control medicament pump or the numerical control regulating valve from the medicament storage tank at the moment and has enough pressure (self-flowing or pumping can be realized). The numerical control regulating valve is an electric or pneumatic liquid flow regulating valve controlled by a PLC. The electronic flowmeter is an electromagnetic flowmeter, a turbine flowmeter, a vortex shedding flowmeter, a gear flowmeter or other liquid flow detection instruments which have analog communication functions or digital communication functions such as pulse, current, voltage and the like and can be automatically controlled by combining with a PLC. The flow break control valve is a liquid stop valve and is used for stopping liquid medicine when stopping adding medicine and preventing the liquid medicine from leaking, and the flow break control valve can be a pneumatic stop valve, an electric stop valve or an electromagnetic valve or not. The medicine path refers to a medicine conveying path from the medicine storage tank to the medicine adding place.
The working principle of the chemical adding machine of the utility model is as follows: in the conveying process of the liquid medicine, the electronic flowmeter converts the liquid medicine flow detected online into an electric signal and automatically transmits the electric signal to the PLC, the PLC compares the flow measured online by the electronic flowmeter with a preset target flow, and the rotating speed of the numerical control medicament pump or the opening of the numerical control regulating valve is automatically controlled to regulate the liquid medicine flow, so that the reading value of the flowmeter is consistent with the set flow. The system automatically adjusts the flow rate to the set flow rate due to any change in the outflow of the medical fluid from the reservoir.
The whole machine of the medicine feeder consists of a PLC control cabinet and a medicine liquid metering and conveying cabinet, as shown in figure 3 (taking 1 medicine 3 medicine paths and a numerical control medicine pump for example to adjust the medicine adding amount). The drug reservoir 1 in fig. 3 is a peripheral device and is not included in the present utility model. The mounting locations of the components within the applicator of fig. 3 do not necessarily correspond to those shown in fig. 3. The number of dosing systems and their constituent elements installed inside the dosing machine in fig. 3 is not limited. In fig. 3, the components and accessories of the drug adding system are sequentially arranged according to the mounting position sequence of the drug path flow direction: a medicine inlet valve 3, a filter (deslagging) device 4, a medicine liquid diverter 5, a numerical control medicine pump 6 (a liquid-gas combined electromagnetic valve and a different diversion port which are arranged on the medicine liquid diverter), an electronic flowmeter 7 and a medicine liquid flow breaking control valve 8. The compressed air in fig. 3, in addition to being the medium for cleaning the medication path, also powers the pneumatic shut-off control valve (when employed). The clear water in fig. 3 is another medium for cleaning the medicine path.
The PLC control cabinet is not necessarily designed in structural size according to actual working conditions, and comprises a leakage protection circuit breaker, a switching power supply (changed from AC 220V to DC 12-48V), a PLC, an industrial control touch screen, a stepping or servo motor driver, a frequency converter (used for controlling a variable frequency motor), an intermediate relay, a compressed air reversing electromagnetic valve (used for controlling a pneumatic valve), a compressed air cut-off electromagnetic valve (used for controlling a cleaning and feeding gas of a pharmaceutical road), a temperature sensor in the cabinet, an indicator (a pressure gauge, a thermometer, a liquid level gauge, an indicator lamp), an alarm, a button, an illumination lamp in the cabinet and the like. The indication instrument can also be replaced by an industrial touch screen. The temperature sensor in the cabinet can be not installed when not needed.
The liquid medicine metering and conveying cabinet is not necessarily designed in structural size according to actual working condition requirements, and comprises a medicine inlet valve (manual or electric), a filtering (deslagging) device, a liquid medicine diverter, a numerical control medicine pump or a numerical control regulating valve, an electronic flowmeter, a liquid medicine flow breaking control valve, a liquid-gas combined electromagnetic valve, a clear water inlet valve (manual or electric), a compressed air pressure reducing valve, a liquid medicine flow breaking sensor, a liquid medicine pressure sensor, a liquid medicine temperature sensor, a motor temperature sensor, an internal cabinet lighting lamp and the like. The liquid-gas combined electromagnetic valve is an inlet of clean water and compressed air for cleaning a medicine path, is arranged at a diversion port of a liquid medicine diverter, and a combined schematic diagram is shown in fig. 4. The liquid medicine flow breaking sensor and the liquid medicine pressure sensor are arranged behind the liquid medicine flow breaking control valve. The liquid medicine temperature sensor is arranged at the split-flow port of the liquid medicine splitter (see figure 4). The motor temperature sensor is fixed on the motor shell. The liquid medicine flow stopping sensor, the liquid medicine pressure sensor, the liquid medicine temperature sensor and the motor temperature sensor can be not installed if not needed.
The liquid medicine metering and conveying cabinet can also adopt an open type, wherein the configured components are not limited to be arranged in the same cabinet body or the same space, and can be arranged at proper positions outside the cabinet in a scattered manner along with the configuration of the medicine path pipelines.
Description of the drawings:
fig. 1 is a schematic diagram of a main stream dosing device PLC digital control constant pressure constant flow dosing machine applied in the current domestic mineral processing production, and fig. 1 shows: 1-a medicine storage box; 2-a float valve; 3-a constant liquid level medicine storage tank; 4-a manual regulating valve; 5-solenoid or pneumatic valve; 6-a PLC control cabinet; 7-funnel. In fig. 1, arrows indicate the flow direction of the chemical solution.
Fig. 2 is a schematic diagram of a dosing system (taking a numerical control dosing pump to adjust dosing amount as an example) of the dosing machine according to the present utility model, and fig. 2 shows: 1-a filter (deslagging) device; 2-PLC; 3-an industrial control touch screen (man-machine interface); 4-a numerical control medicament pump; 5-an electronic flowmeter; 6, a break control valve; 7-a stepper or servo motor driver or transducer. In fig. 2, arrows indicate the flow direction of the chemical solution.
Fig. 3 is a schematic diagram of the general assembly of the drug adding machine of the present utility model (taking 1 drug, 3 drug paths, and a numerical control drug pump to adjust the drug adding amount as an example), and fig. 3 shows: 1-a medicine storage tank; 2-a liquid outlet valve of the medicine storage tank; 3-a medicine inlet valve; 4-a filter (deslagging) device; 5-a liquid medicine diverter; 6-a numerical control medicament pump; 7-an electronic flowmeter; 8-a liquid medicine interruption control valve; 9-an industrial control touch screen; 10-compressed air inlet valve; 11-a compressed air pressure reducing valve; 12-a clean water inlet valve; 13-a liquid-gas combined electromagnetic valve; 14-a medicine inlet pipe; 15-compressed air inlet pipe; 16-a clean water inlet pipe; 17-a PLC control cabinet; 18-a liquid medicine metering and conveying cabinet. In fig. 3, arrows indicate the flow direction of the liquid and gas.
Fig. 4 is a schematic diagram of the combined installation of the liquid-gas combined electromagnetic valve and the liquid medicine temperature sensor (taking the numerical control medicine pump to adjust the medicine adding amount as an example) for cleaning the medicine path in the medicine adding machine of the utility model, and fig. 4 shows: 1-a liquid medicine blocking electromagnetic valve for cleaning a medicine path; 2-introducing clean water for cleaning the medicine path into the electromagnetic valve; 3-introducing compressed air for cleaning the medicine path into the electromagnetic valve; 4, a liquid medicine temperature sensor; 5-a liquid medicine diverter; 6-a numerical control medicament pump. In fig. 4, arrows indicate the flow directions of the liquid and gas.
The specific embodiment is as follows:
the dosing machine drives the PLC and the industrial control touch screen to control the whole dosing machine hardware system to automatically operate through pre-programmed software and touch screen configuration. The manufacturer presets known hardware parameters before the equipment leaves factory, so that the PLC automatically establishes a flow control mathematical model, and when a user adds medicine, the system can automatically calculate and adjust the rotating speed of the numerical control metering pump or the opening of the numerical control regulating valve according to the medicine liquid flow detected by the electronic flowmeter on line only by inputting medicine adding instruction parameters on the touch screen, so that the corresponding medicine liquid flow is output. The dosing instruction parameters comprise indexes such as raw ore processing capacity (t/d, t/h), medicament concentration (%, g/100 ml) or density (g/cm) which are commonly used in ore dressing production 3 G/ml), dosage of the medicament (g/t, g/h) or flow rate of the liquid medicine (ml/min, g/min), etc. The upper limit of the liquid medicine flow is the maximum flow designed by the chemical adding machine, the lower limit of the liquid medicine flow is the minimum flow designed by the chemical adding machine, and the precision of the chemical adding amount can be reduced or can not be measured beyond the upper limit and the lower limit.
The dosing method of the dosing machine of the utility model (illustrated in fig. 3): the power supply is switched on, the liquid outlet valve 2 of the medicine storage tank is opened, the medicine inlet valve 3 of the medicine adding machine, the compressed air inlet valve 10 and the clean water inlet valve 12 are opened, the compressed air pressure reducing valve 11 of the medicine adding machine is adjusted to enable the air inlet pressure to be 0.4-0.6 Mpa, and the medicine adding machine enters a standby state; inputting dosing instruction parameters on an industrial control touch screen 9, clicking a dosing virtual key, enabling liquid medicine to enter the numerical control medicine pump 6 along a medicine inlet pipe 14 through a filter (deslagging) device 4 and a liquid medicine diverter 5 under the self-priming action of the numerical control medicine pump 6 arranged in a dosing machine, and outputting the liquid medicine to the outside of the dosing machine or directly to a dosing place along a medicine outlet pipe through an electronic flowmeter 7 and a liquid medicine flow breaking control valve 8 under the pumping action; in the process, the electronic flowmeter can automatically detect the liquid medicine flow and transmit the detection result to the PLC, the PLC continuously and rapidly adjusts the rotating speed of the numerical control medicament pump after calculation and comparison, so that the output liquid medicine flow and the target dosing amount tend to be consistent, and the stability is achieved when the relative error of the flow is less than 1%. The liquid medicine output to the outside of the medicine adding machine can be further conveyed to a medicine adding place through a self-flowing pipeline or a conveying pump which is additionally arranged. When the dosing amount is changed, dosing instruction parameters can be directly modified on the industrial control touch screen 9, and the dosing opportunity automatically outputs modified target liquid medicine flow according to a new instruction. When stopping dosing, a dosing virtual key can be clicked on the industrial control touch screen 9 to enable the dosing machine to return to a standby state. When the numerical control medicament pump adopts a pump without self-absorption capacity or adopts a numerical control regulating valve to replace the numerical control medicament pump, the medicament feeding of the medicament adding machine has certain pressure, so that the medicament liquid can smoothly flow to the numerical control medicament pump or the medicament adding place.
The utility model relates to an automatic cleaning method of a medicine path of a medicine adding machine (shown as an example in fig. 3): in the standby state, cleaning media (clean water or compressed air), cleaning time, cleaning times, cleaning road sections and the like are selected on the industrial control touch screen 9, then a medicine road cleaning virtual key is clicked, and clean water or compressed air can automatically enter the medicine road for cleaning through the liquid-gas combination electromagnetic valve 13. When the medicine path from the numerical control medicine pump 6, the electronic flowmeter 7 and the medicine liquid flow breaking control valve 8 to the medicine adding place is cleaned, the medicine feeding valve 3 and the slag discharging valve of the filter (slag removing) device 4 are closed, at the moment, the medicine liquid flow breaking control valve 8 is automatically opened, and the numerical control medicine pump 6 automatically runs at a low speed to assist in removing residual medicine liquid in the pump and the pipe. When the filter (deslagging) device 4 is cleaned, the medicine inlet valve 3 is closed, the deslagging valve of the filter (deslagging) device 4 is opened, and the numerical control medicine pump 6 and the medicine liquid flow breaking control valve 8 can be automatically stopped or closed at the moment so as to prevent clean water or compressed air from entering a medicine path at the rear section. When the medicine inlet valve 3 and the front section medicine path are cleaned, the medicine storage tank liquid outlet valve 2 and the medicine inlet valve 3 are opened, the slag discharging valve of the filter (slag removing) device 4 is closed, and the numerical control medicine pump 6 and the medicine liquid breaking control valve 8 are automatically stopped and closed at the moment. The cleaning stopping virtual key can be clicked on the industrial control touch screen 9 at any time when cleaning is to be stopped in the cleaning process. After the medicine path is cleaned, the slag discharging valve of the filter (slag removing) device 4 is closed, and the medicine feeding valve 3 is opened (when needed) to enable the medicine feeder to return to the standby state.
Factors influencing the dosing accuracy of the dosing machine of the utility model: (1) the accuracy of the electronic flowmeter directly influences the accuracy of the liquid medicine flow obtained by on-line detection, and further influences the dosing accuracy of the dosing machine; (2) when the drug feeding pipeline is unobstructed and the drug feeding pipeline has insufficient or unsmooth drift diameter, the stability of the detection result of the electronic flowmeter can be influenced due to insufficient drug feeding, so that the dosing precision of the dosing machine can be influenced; (3) the tightness of the medicine feeding pipeline can influence the stability of the detection result of the electronic flowmeter due to the inhaled air when the medicine feeding pipeline is not tightly sealed, so that the medicine feeding precision of the medicine feeding machine is influenced; (4) solid particles in the liquid medicine, when mixed in the liquid medicine, may influence the stability of the detection result of the electronic flowmeter, and further influence the medicine adding precision of the medicine adding machine; (5) when the internal scale or corrosion of the electronic flowmeter is influenced by the property of the liquid medicine, the stability and the accuracy of the detection result of the electronic flowmeter can be influenced, and the dosing precision of the dosing machine can be further influenced; (6) the type selection of the numerical control medicament pump or the numerical control regulating valve can be influenced by the medicament adding process requirement and the configuration form of the medicament pipeline, and the medicament adding precision can be influenced by improper type selection.
The foregoing is merely a general embodiment of the present utility model and is not intended to limit the present utility model. Any modification, variation, equivalent substitution, etc. made within the principle and the idea of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. An intelligent control type high-precision mineral separation dosing machine consists of a PLC control cabinet and a liquid medicine metering and conveying cabinet, and is characterized in that: the PLC control cabinet comprises a leakage protection circuit breaker, a switching power supply, a PLC, an industrial control touch screen, a stepping or servo motor driver or frequency converter, an intermediate relay, a compressed air reversing electromagnetic valve, a compressed air cut-off electromagnetic valve, a temperature sensor in the cabinet, an indicating instrument, an alarm, a button, an illumination lamp in the cabinet and the like; the liquid medicine metering and conveying cabinet comprises a medicine inlet valve, a filter (deslagging) device, a shunt, a numerical control medicament pump or numerical control regulating valve, an electronic flowmeter, a liquid medicine flow breaking control valve, a clear water inlet valve, a compressed air pressure reducing valve, a liquid-gas combined electromagnetic valve, a liquid medicine flow breaking sensor, a liquid medicine pressure sensor, a liquid medicine temperature sensor, a motor temperature sensor, an illumination lamp in the cabinet and the like. The indicating instrument comprises a pressure gauge, a thermometer, a liquid level gauge, an indicating lamp and the like, and can be a specific indicating instrument or can be replaced by an industrial touch screen; the voltage of the switching power supply is changed from AC 220V to DC 12-48V.
2. The intelligent control type high-precision mineral processing chemical feeder as claimed in claim 1, wherein the chemical feeding system comprises a PLC, an industrial control touch screen, a numerical control chemical pump or a numerical control regulating valve and an electronic flowmeter, and the auxiliary system comprises a chemical feeding valve, a filtering (deslagging) device, a chemical liquid diverter, a chemical liquid flow breaking control valve, a clear water inlet valve, a compressed air pressure reducing valve, a liquid-gas combined electromagnetic valve, a chemical liquid flow breaking sensor, a chemical liquid pressure sensor, a chemical liquid temperature sensor and a motor temperature sensor. The components and accessories of the medicine adding system are sequentially a medicine inlet valve, a filter (deslagging) device, a medicine liquid diverter, a numerical control medicine pump or a numerical control regulating valve (a medicine liquid temperature sensor, a liquid-gas combined electromagnetic valve and different diversion ports arranged on the medicine liquid diverter together), an electronic flowmeter, a medicine liquid flow break control valve, a medicine liquid flow break sensor and a medicine liquid pressure sensor according to the installation position sequence of the flowing direction of medicine liquid.
3. The digitally controlled drug pump of claim 1 and claim 2, which is a gear pump or other pump driven by a PLC controlled stepper motor or servo motor or variable frequency motor, with or without self priming capability.
4. The digitally controlled regulator valve of claims 1 and 2, being a PLC controlled electric or pneumatic liquid flow regulator valve.
5. The electronic flowmeter of claim 1 and claim 2, which is an electromagnetic flowmeter, a turbine flowmeter, a vortex shedding flowmeter, a gear flowmeter or other liquid flow detection instrument, has analog communication functions or digital communication functions of pulse, current, voltage and the like, and can be automatically controlled in combination with a PLC.
6. The liquid-gas combination solenoid valve of claim 1 and claim 2, which is composed of a liquid medicine blocking solenoid valve, a compressed air introduction solenoid valve and a clear water introduction solenoid valve, is used for cleaning medicine paths and is controlled by a PLC.
7. The PLC control cabinet and the liquid medicine metering and conveying cabinet of claim 1 are not necessarily designed and determined according to actual working condition requirements. The liquid medicine metering and conveying cabinet can also be of an open type design, wherein the configured components are not limited to be arranged in the same cabinet body or the same space, and can be arranged at proper positions outside the cabinet in a scattered manner along with the configuration of the medicine path pipelines.
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| CN202310916027.4A CN116899760A (en) | 2023-07-21 | 2023-07-21 | An intelligent control type high-precision mineral processing and dosing machine |
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