CN114405156B - Control method and control system of coal slime water pressure filter - Google Patents
Control method and control system of coal slime water pressure filter Download PDFInfo
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- CN114405156B CN114405156B CN202210093020.2A CN202210093020A CN114405156B CN 114405156 B CN114405156 B CN 114405156B CN 202210093020 A CN202210093020 A CN 202210093020A CN 114405156 B CN114405156 B CN 114405156B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/04—Controlling the filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
- B01D33/17—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with rotary filtering tables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
- B01D33/804—Accessories integrally combined with devices for controlling the filtration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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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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Abstract
The invention discloses a control method and a control system of a coal slime water pressure filter, wherein the method comprises the following steps: acquiring historical working data of a pressure filter, wherein the historical working data comprises feeding flow, feeding concentration, working pressure, spindle rotating speed, discharging period and discharging product moisture at the same moment in a historical time period; obtaining a drainage product moisture model of the pressure filter according to the historical working data; acquiring an actual moisture value of a discharged product of the pressure filter; and determining a control strategy of the pressure filter according to the drainage product moisture model and the actual moisture value. According to the scheme, the drainage product moisture model is established, the set value of the adjustment parameter can be predicted through the model, the closed-loop control of the coal slime moisture is realized, and the scheme has higher automation degree and regulation precision.
Description
Technical Field
The invention relates to the technical field of slime water treatment equipment, in particular to a control method and a control system of a slime water pressure filter.
Background
At present, a pressure filter is a common fine slime dehydration device in a coal preparation plant, and aims to maximally separate coal from water, improve the quality of the coal and recycle the reclaimed water. The structure and the working principle of the pressure filter are as follows: the filter is placed in a closed pressure bin, when the slurry is fed into the tank body of the filter by a feed pump, the pressure bin is filled with compressed air with a certain pressure, a pressure difference is formed between a green disc and a vapor-water separator which is communicated with the atmosphere by a control head, under the pressure action in the pressure bin, liquid in the tank body is discharged through a filter medium immersed in the suspension, and solid particles are collected on the filter medium (filter cloth) to form a filter cake. Along with the rotation of the filter disc, the filter cake is discharged into a conveyor after further drying and dewatering, three continuous processes of filtering, drying and falling are completed, and the device can continuously work, has large treatment capacity and low product moisture and is widely applied to coal preparation plants.
The filter disc is generally composed of a plurality of filter fans, the filter fans are fixed on a main shaft by bolts, pressing strips and pressing plates, and each filter fan is an independent filter unit. The filter plate is a hollow structure made of lighter metal or plastic, and the circular tube in the inner cavity of the filter plate is communicated with the filtrate hole of the main shaft. The filter cloth is covered outside the filter plate. The control head is fixed at two ends of the main shaft, and divides the filtering process into three areas of filtering, drying and blowing. In different areas, the filter fan is connected with the atmosphere and the back blowing air respectively. After the big tank is filled with a certain pressure, when the filter disc rotates clockwise, the filter disc sequentially passes through the filtering area, the drying area and the filter cake falling area, so that each filter fan is connected with different areas. When the filter fan is positioned in the filtering area, the filter fan is communicated with the atmosphere, the coal slurry moves to the filter cloth under the pressure of the large tank, and the coal particles form a filter cake on the filter cloth; the filtrate passes through the filter cloth, enters the inner cavity of the filter fan, and is discharged through the filtrate hole of the main shaft, so that the filtration is realized. When the filter fan is in the drying zone, it is still connected to the atmosphere, but at this point the filter fan has been moved away from the slurry level. At this time, the air with high pressure in the large tank is discharged to the atmosphere through the gaps among the coal particles of the filter cake, and takes away the moisture among the gaps among the coal particles, so that the moisture of the filter cake is further reduced. At present, the existing pressure filter cannot realize automatic adjustment generally, and depends on manual operation, so that the efficiency is low and the accuracy is affected.
Disclosure of Invention
The invention aims to solve the technical problem that the existing slime water pressure filter cannot realize automatic and accurate control, and provides a control method and a control system of the slime water pressure filter.
Aiming at the technical problems, the invention provides the following technical scheme:
the invention provides a control method of a slime water pressure filter, which comprises the following steps:
acquiring historical working data of a pressure filter, wherein the historical working data comprises feeding flow, feeding concentration, working pressure, spindle rotating speed, discharging period and discharging product moisture at the same moment in a historical time period;
obtaining a drainage product moisture model of the pressure filter according to the historical working data;
acquiring an actual moisture value of a discharged product of the pressure filter;
and determining a control strategy of the pressure filter according to the drainage product moisture model and the actual moisture value.
Optionally, in the method for controlling a slime water pressure filter, the step of obtaining the drainage product moisture model of the pressure filter according to the historical working data comprises the following steps:
and training the historical working data by using a machine learning algorithm, wherein the trained machine learning algorithm is used as the drainage product moisture model.
Optionally, in the method for controlling a slime water pressure filter, the step of obtaining the drainage product moisture model of the pressure filter according to the historical working data comprises the following steps:
in the process of training the historical working data by using the machine learning algorithm, the feeding flow, feeding concentration, working pressure, discharging period and discharging product moisture at any moment in the historical time period are used as input samples, and the spindle rotating speed at the same moment is used as an output sample for training.
Optionally, in the method for controlling a slime water pressure filter, the step of obtaining the drainage product moisture model of the pressure filter according to the historical working data comprises the following steps:
the machine learning algorithm comprises a least squares support vector machine algorithm or a BP neural network algorithm.
Some embodiments of the present invention further provide a control system for a slime water press filter, which is used for controlling the slime water press filter, and includes at least one processor and at least one memory, at least one memory stores program information, and at least one processor reads the program information and then executes the control method of the slime water press filter.
Optionally, the control system of the coal slime water pressure filter further comprises an electromagnetic flowmeter, wherein:
the coal slime water pressure filter is connected with a feeding pump, the electromagnetic flowmeter is arranged on a discharging pipeline of the feeding pump, and the electromagnetic flowmeter detects feeding flow and sends the feeding flow to the processor.
Optionally, the control system of the coal slime water pressure filter further comprises a pulp concentration meter, wherein:
the pulp concentration meter is arranged on a discharging pipeline of the feeding pump, and detects the feeding concentration and sends the feeding concentration to the processor.
Optionally, the control system of the coal slime water pressure filter further comprises a moisture meter:
the coal slime water pressure filter is connected with a discharging device, and the moisture meter is arranged in the discharging device; the moisture meter is configured to detect the discharge product moisture and send the discharge moisture to the processor.
Optionally, the control system of the coal slime water pressure filter further comprises a filter pressing tank, a filtering device and a conveying device;
the feeding device is connected to one side of the filter pressing tank;
the lower end of the filter pressing tank is provided with a supporting plate, the inside of the filter pressing tank is provided with a pressurizing bin, and the inside of the pressurizing bin is provided with a scraper machine;
the filter device is arranged in the pressurized bin and comprises a filter and a plurality of filter discs, and the filter discs are rotationally connected with the filter;
the discharging device is connected to one side of the scraper machine.
Optionally, the control system of the coal slime water pressure filter comprises a discharging upper bin and a discharging pipe, wherein the discharging upper bin is communicated with the scraper, and the discharging pipe is arranged at the lower end of the discharging upper bin and is communicated with the discharging upper bin; and the discharging upper bin receives a filter cake formed by a filter medium and output by the slime water pressure filter, and the filter cake is intermittently discharged after reaching a set quantity.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
according to the control method and the control system of the coal slime water pressure filter, a mathematical model of the product water content of the pressure filter is built through accumulation of historical data such as the feeding flow, feeding concentration, working pressure, main shaft rotating speed, discharging period and discharging product water content of the pressure filter, a set value of an adjustment parameter is predicted according to an actual water content value of the discharging product of the pressure filter and the mathematical model, the control system of the pressure filter is adjusted according to the predicted set value of the adjustment parameter, so that closed-loop control of the coal slime water content is achieved, the adjustment parameter commonly used for adjusting the water content of the discharging product of the pressure filter is the main shaft rotating speed, after the water content of the product exceeds a set range, the set value of the main shaft rotating speed can be predicted through the mathematical model of the product water content, and the main shaft rotating speed is adjusted according to the predicted set value.
Drawings
The objects and advantages of the present invention will be better understood by describing in detail preferred embodiments thereof with reference to the accompanying drawings in which:
FIG. 1 is a flow chart of a control method of a slime water pressure filter according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of a mathematical model predictive adaptation parameter of a press filter according to one embodiment of the invention;
FIG. 3 is a block diagram of a control system of a slurry water press filter according to an embodiment of the present invention;
FIG. 4 is a schematic diagram showing a front view of a slurry water press filter according to an embodiment of the present invention;
fig. 5 is a schematic side view of a coal slime water press filter according to one embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The embodiment provides a control method of a slime water pressure filter, which can be applied to a control system of the slime water pressure filter, as shown in fig. 1, and the method comprises the following steps:
s101: and acquiring historical working data of the pressure filter, wherein the historical working data comprises feeding flow, feeding concentration, working pressure, spindle rotating speed, discharging period and discharging product moisture at the same moment in a historical time period. The historical operating data may be a result of a collection of operating state data from the press filter over the previous months. In particular, the parameters may be acquired by individual sensors provided in the pressure filter system.
S102: and obtaining a drainage product moisture model of the pressure filter according to the historical working data. According to the simulation of the historical working data, the relation among the parameters can be obtained, and the corresponding relation among the feeding flow, the feeding concentration, the working pressure, the spindle rotating speed, the discharging period and the discharging product moisture of the pressure filter in normal working can be obtained, and whether the influence of each parameter on the discharging product moisture can be improved by adjusting the spindle rotating speed or not.
S103: and obtaining the actual moisture value of the discharged product of the pressure filter.
S104: and determining a control strategy of the pressure filter according to the drainage product moisture model and the actual moisture value. In particular, when the moisture of the discharged product is lower than a set lower limit or higher than a set upper limit, an automatic adjustment strategy is given according to a discharged product moisture model of the pressure filter, and the discharged product moisture model is based on historical data to count the corresponding relation among various parameters, so that when the actual moisture value of the discharged product is too high or too low, a proper adjustment strategy can be determined, and the actual moisture value of the discharged product is close to a set value after the parameters are adjusted, thereby realizing closed-loop control of the moisture of the coal slime.
In some preferred embodiments, the historical working data is trained in step S102 using a machine learning algorithm, and the trained machine learning algorithm is used as the drainage product moisture model. Specifically, as shown in fig. 2, in the process of training the historical working data by using the machine learning algorithm, the input samples are taken as the feeding flow, feeding concentration, working pressure (pressure of a pressurizing bin), discharging period and discharging product moisture at any moment in the historical time period, and the output samples are taken as the main shaft rotation speed at the same moment for training. The machine learning algorithm comprises a least squares support vector machine algorithm or a BP neural network algorithm. The machine learning algorithm can simulate more accurate corresponding relation among all parameters, and the least square support vector machine algorithm or BP neural network algorithm has wider application and better theoretical basis.
As shown in fig. 3, the embodiment of the present invention further provides a control system for a slime water press filter, which is used for controlling the slime water press filter, and includes at least one processor 201 and at least one memory 202, at least one memory 202 stores program information, and at least one processor 201 executes the control method of the slime water press filter described in the above method embodiment after reading the program information.
Fig. 4 is a schematic diagram of a front view structure of a coal slime water pressure filter provided by the embodiment of the invention, fig. 5 is a schematic diagram of a side view structure of the coal slime water pressure filter, as shown in fig. 4 and 5, the coal slime water pressure filter 2 comprises or is connected with a filter pressing tank 7, a filtering device, a discharging device, a conveying device 6 and a feeding device, the feeding device is connected to one side of the filter pressing tank 7, a supporting plate 12 is arranged at the lower end of the filter pressing tank 7, the filter pressing tank 7 and the supporting plate 12 are fixedly connected with each other, a pressurizing bin 1 is arranged in the filter pressing tank 7, the filtering device is arranged in the pressurizing bin 1, the filtering device comprises a filter 2 and a plurality of filter discs 19, the filter discs 19 are all connected with the filter 2 in a rotating manner, a scraper 3 is further arranged in the pressurizing bin 1, the scraper 3 is arranged at the lower end of the filter 2, the discharging device is connected to one side of the filter pressing tank 7, the discharging device comprises a discharging upper bin 4 and a discharging pipe 5, the discharging bin 4 and the discharging pipe 5 are fixedly connected with each other, the discharging bin 4 and the discharging bin 5 are continuously connected with each other, and the discharging bin 4 is continuously arranged in the discharging bin 4, and the discharging bin 4 is continuously connected with the discharging bin 5, when the discharging bin is continuously connected with the discharging bin 4 by the discharging device. The control system of the coal slime water pressure filter provided by the invention further comprises a moisture meter, wherein the moisture meter is arranged in the discharging device; the moisture meter is used to detect the discharge product moisture and send the discharge moisture to the processor 201.
As shown in the figure, conveyor 6 connects the lower extreme at row material pipe 5, and conveyor 6 adopts cast stone groove scraper machine or conveyer's arbitrary one, can carry out the transmission to the material of discharge, is provided with first connecting tube way 13 on row material pipe 5, communicates each other between row material pipe 5 and this first connecting tube way 13, is connected with air inlet mechanism in connecting tube's lower extreme one side, feed device is including pan feeding pond 14 and ejection of compact pipeline 16, and the one end of ejection of compact pipeline 16 communicates each other with pan feeding pond 14, the other end of ejection of compact pipeline 16 with communicate each other between the filter-pressing jar 7, be connected with pan feeding pump 15 in one side of pan feeding pond 14, interconnect between pan feeding pump 15 and the ejection of compact pipeline 16, install electromagnetic flowmeter 17 and ore pulp concentration meter 18 on the ejection of compact pipeline 16. The electromagnetic flowmeter detects the feed flow 17 and sends the feed flow to the processor 201, and the pulp concentration meter 18 detects the feed concentration and sends the feed concentration to the processor 201.
As shown in fig. 4 and 5, a gas-water separator 21 is disposed at one side of the lower end of the filter tank 7, the gas-water separator 21 is connected with a distributing head mounted on the filter disc 19 through two second connecting pipelines 22, a cleaning device 27 is mounted at one side of the filter tank 7, a cleaning water pipe 11 is disposed at the lower end of the cleaning device 27, the cleaning water pipe 11 is communicated with the cleaning device 27, cleaning of the inside of the filter tank 7 can be achieved, the air inlet mechanism comprises a first air inlet pipeline 10 and a high-pressure fan 9, one end of the first air inlet pipeline 10 is connected with the high-pressure fan 9, the other end of the first air inlet pipeline 10 is communicated with the first connecting pipeline 13, a blowback device 20 is further mounted at one side of the filter tank 7, a second air inlet pipeline 23 is connected with a low-pressure fan 24 at one end of the blowback device 20, a pneumatic regulating valve 25 and a manual regulating valve 26 are mounted on the second air inlet pipeline 23, and the pressure of the blowback air is generally higher than the pressure of the filter tank 7 by 0.05 for dropping filter cake.
The solution described in the above embodiment allows the press filter 2 to be automatically adjusted by: step 1: establishing a discharged product moisture model of the product moisture of the pressure filter 2: an electromagnetic flowmeter 17 and a pulp concentration meter 18 are arranged on a discharge pipeline 16 of a feed pump 15 of the pressure filter 2; step 2: measuring the feeding flow, feeding concentration, working pressure, main shaft rotating speed, discharging period and accumulation of discharged product moisture data of the pressure filter 2 through an electromagnetic flowmeter 17 and a pulp concentration meter 18, and establishing a discharged product moisture model of the product moisture of the pressure filter 2 through the data; step 3: setting the moisture range of the discharged product of the pressure filter 2; step 4: when the water content of the discharged product is lower than the set lower limit or higher than the set upper limit, an automatic adjustment strategy is given according to a discharged product water content model of the product water content of the pressure filter 2; step 5: the set value of the adjustment parameter can be predicted by the established discharging product moisture model of the product moisture of the press filter 2, and the control system 28 of the press filter 2 is adjusted according to the predicted set value of the adjustment parameter, so that the closed-loop control of the coal slime moisture is realized.
The pressure filter 2 discharges the product moisture and adjusts the commonly used adjustment parameter to be the main shaft rotational speed, when the product moisture exceeds the setting range, the main shaft rotational speed can be adjusted according to the predicted set value through the mathematical model of the product moisture, when the product moisture exceeds the setting range, the main shaft rotational speed can be predicted through the mathematical model of the product moisture, and the main shaft rotational speed is adjusted according to the predicted set value.
The working mode is as follows: the pressure filter 2 is that the filter 2 is arranged in a closed pressure tank, and a discharge device is arranged at the head of the filter 2; the suspension to be filtered is fed into the tank body of the filter 2 by a feed pump 15, compressed air with a certain pressure is filled into a pressurizing tank, a pressure difference is formed between a distributing head and a vapor-water separator which is communicated with the atmosphere on a filter disc 19, liquid in the tank body is discharged through a filter medium immersed in the suspension under the pressure effect in a filter pressing tank 7, solid particles are collected on the filter medium to form a filter cake, and the filter cake is discharged into a scraper machine 3 after being dried and precipitated along with the rotation of the filter disc 19, and is collected into an upper bin of a discharge device by the scraper machine 3. When a certain amount of water is discharged intermittently by the discharging device, the influence factors of the water discharged by the pressure filter 2 mainly are as follows: the working pressure of the pressurizing bin 1, the rotating speed of the main shaft, the concentration and granularity composition of the feeding ore pulp and the like. Under otherwise identical conditions: the higher the pressure in the pressurized silo 1, the greater the pressure difference across the filter cake, the easier it is to suck the cake, the greater the throughput, the lower the product moisture, but the solids content in the filtrate will increase. The rotation speed of the main shaft is low, so that the yield is low and the moisture is low; the spindle rotation speed is high, the yield is high, and the moisture is high. The feed pulp has high concentration, so that the yield and the water content are high; the feed pulp has low concentration, so that the yield and the moisture are low. The fine grain content of the feed ore pulp is high, so that the yield is low and the moisture is high; the fine grain content of the material ore pulp is low, so that the yield is high and the moisture is low.
According to the scheme of the embodiment of the invention, a discharging product moisture model of the product moisture of the pressure filter 2 is established, so that closed-loop control of the coal slime moisture is realized. The sensor detection data collected by the processor 201 in real time (such as feeding concentration, feeding flow, working pressure, discharging period and discharging product moisture) have a corresponding relation with the spindle rotation speed, and for each parameter, an adjustment strategy is provided to enable the spindle speed to be adjusted according to the set direction, so that the moisture of the discharging product is adjusted.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While obvious variations or modifications are contemplated as falling within the scope of the present invention.
Claims (8)
1. The control method of the coal slime water pressure filter is characterized by comprising the following steps:
acquiring historical working data of a pressure filter, wherein the historical working data comprises feeding flow, feeding concentration, working pressure, spindle rotating speed, discharging period and discharging product moisture at the same moment in a historical time period;
obtaining a drainage product moisture model of the pressure filter according to the historical working data;
acquiring an actual moisture value of a discharged product of the pressure filter;
determining a control strategy of the pressure filter according to the drainage product moisture model and the actual moisture value;
the step of obtaining a drainage product moisture model of the pressure filter according to the historical working data comprises the following steps:
training the historical working data by using a machine learning algorithm, wherein the trained machine learning algorithm is used as the drainage product moisture model;
the step of obtaining a drainage product moisture model of the pressure filter according to the historical working data comprises the following steps:
in the process of training the historical working data by using the machine learning algorithm, the feeding flow, feeding concentration, working pressure, discharging period and discharging product moisture at any moment in the historical time period are used as input samples, and the spindle rotating speed at the same moment is used as an output sample for training.
2. The method of controlling a slurry water press filter according to claim 1, wherein in the step of obtaining a discharge product moisture model of the press filter based on the historical operating data:
the machine learning algorithm comprises a least squares support vector machine algorithm or a BP neural network algorithm.
3. A control system of a slime water press filter for controlling the slime water press filter, characterized by comprising at least one processor and at least one memory, wherein at least one memory stores program information, and at least one processor executes the control method of the slime water press filter according to claim 1 or 2 after reading the program information.
4. The control system of a slime water pressure filter of claim 3, further comprising an electromagnetic flowmeter, wherein:
the coal slime water pressure filter is connected with a feeding pump, the electromagnetic flowmeter is arranged on a discharging pipeline of the feeding pump, and the electromagnetic flowmeter detects feeding flow and sends the feeding flow to the processor.
5. The control system of a slime water pressure filter of claim 4, further comprising a pulp concentration meter, wherein:
the pulp concentration meter is arranged on a discharging pipeline of the feeding pump, and detects the feeding concentration and sends the feeding concentration to the processor.
6. The control system of a slime water pressure filter of claim 5, further comprising a moisture meter:
the coal slime water pressure filter is connected with a discharging device, and the moisture meter is arranged in the discharging device; the moisture meter is configured to detect a discharge product moisture and send the discharge product moisture to the processor.
7. The control system of a slime water pressure filter as set forth in claim 6, wherein:
the coal slime water pressure filter further comprises a filter pressing tank, a filtering device and a conveying device;
the feeding device is connected to one side of the filter pressing tank;
the lower end of the filter pressing tank is provided with a supporting plate, the inside of the filter pressing tank is provided with a pressurizing bin, and the inside of the pressurizing bin is provided with a scraper machine;
the filter device is arranged in the pressurized bin and comprises a filter and a plurality of filter discs, and the filter discs are rotationally connected with the filter;
the discharging device is connected to one side of the scraper machine.
8. The control system of a slime water pressure filter as set forth in claim 7, wherein:
the discharging device comprises a discharging upper bin and a discharging pipe, the discharging upper bin is communicated with the scraper machine, and the discharging pipe is arranged at the lower end of the discharging upper bin and is communicated with the discharging upper bin; and the discharging upper bin receives a filter cake formed by a filter medium and output by the slime water pressure filter, and the filter cake is intermittently discharged after reaching a set quantity.
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| CN2221998Y (en) * | 1995-07-13 | 1996-03-13 | 煤炭科学研究总院唐山分院 | Pressing filter machine for flotation ore concentrate |
| DE102018218907A1 (en) * | 2018-11-06 | 2020-05-07 | Bhs-Sonthofen Gmbh | Rotary pressure filter module |
| WO2020170171A1 (en) * | 2019-02-19 | 2020-08-27 | Flsmidth A/S | System and method for predictive and adaptive filtering and apparatus thereof |
| CN113209679B (en) * | 2021-05-21 | 2021-11-23 | 中国矿业大学(北京) | Intelligent monitoring and optimal control system of plate-and-frame filter press and control method thereof |
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