CN115487579A - Self-adaptive timely control method and device for piston pusher centrifuge - Google Patents
Self-adaptive timely control method and device for piston pusher centrifuge Download PDFInfo
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- CN115487579A CN115487579A CN202211176585.3A CN202211176585A CN115487579A CN 115487579 A CN115487579 A CN 115487579A CN 202211176585 A CN202211176585 A CN 202211176585A CN 115487579 A CN115487579 A CN 115487579A
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- 239000000463 material Substances 0.000 claims abstract description 87
- 238000001514 detection method Methods 0.000 claims abstract description 81
- 239000007790 solid phase Substances 0.000 claims abstract description 17
- 239000002562 thickening agent Substances 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 abstract description 5
- 239000000725 suspension Substances 0.000 abstract 1
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- 239000007788 liquid Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
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- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
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- 230000008859 change Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
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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
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow 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
- B01D33/80—Accessories
- B01D33/801—Driving means, shaft packing systems or the like
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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
Abstract
The invention relates to the field of piston pusher centrifuges, and discloses a self-adaptive timely control method and device for a piston pusher centrifuge. The device comprises a real-time online detection system, an automatic control system and a piston pusher centrifuge. The real-time on-line detection system comprises a material concentration on-line detection device, a vibration on-line detection device, a motor current on-line detection device and a material moisture on-line detection device, wherein the material concentration on-line detection device is arranged on a feeding pipeline and is used for carrying out real-time on-line detection on the concentration of a material suspension to be separated in a thickener, the vibration on-line detection device is arranged at a bearing position of a piston machine and is used for carrying out real-time on-line detection on machine vibration data, the motor current on-line detection device is used for carrying out real-time detection on the current value of a main motor of the centrifuge, the material moisture on-line detection device is arranged at a solid phase outlet of the machine and is used for carrying out real-time detection on solid phase moisture content after the machine is separated, the real-time detection data result is transmitted to an automatic control system, and after the data is analyzed by the automatic control system, the opening degree of a feeding valve and the operation parameters of the centrifuge are adjusted according to achieve self-adaptive control of the centrifuge.
Description
Technical Field
The invention relates to the field of piston pusher centrifuges, in particular to a self-adaptive timely control method and a device of a piston pusher centrifuge.
Background
The piston pusher centrifuge is a continuously operating, hydraulically pulsating discharge filter centrifuge which performs all the operating procedures, such as feeding, separating, washing, drying, discharging, etc., at full speed. The piston pusher centrifuge comprises a feeding pipe, a first-stage rotary drum, a second-stage rotary drum, a filter medium, a pusher mechanism, a rotating mechanism, a machine base, a machine shell and the like. The material to be separated enters a centrifuge from a thickener of a user through a feeding pipe, is separated and dewatered on a primary rotary drum and a secondary rotary drum, liquid passes through a filtering medium under the action of centrifugal force and is thrown out of the rotary drum through the rotation of the rotary drum, the liquid is discharged out of the centrifuge through a liquid phase port after being collected by a shell, a solid phase is intercepted by the filtering medium to form a filter cake, the filter cake is pushed out of the rotary drum through a material pushing mechanism and is discharged out of the centrifuge through a solid phase port, and thus the purpose of solid-liquid separation is achieved.
With the rapid development of scientific technology, the piston pusher centrifuge is widely applied, but the normal operation of the piston pusher centrifuge cannot be ensured when the concentration of the separated materials is changed in the prior art. When the concentration of the separated material is low, too much liquid phase of the material entering the centrifugal machine is separated, and at the moment, too much liquid phase is not in time for dehydration to form the condition of liquid turnover, so that the water content of the dry material at the discharge port is increased sharply to influence the subsequent operation. Meanwhile, too much liquid phase can wash filter cakes formed on a primary drum of the piston pusher centrifuge, and the washing is irregular, so that the running balance of the drum is damaged, and the centrifuge vibrates violently and cannot run continuously and normally. When the concentration is too high, the flow of the material entering the centrifuge cannot be controlled, so that the centrifuge can run in an overload mode, and the machine is damaged.
The separation effect of the piston pusher centrifuge is mainly expressed by the moisture content of the separated solid phase, the traditional method is to analyze the moisture content of the separated solid phase sample, and the operation parameters of the centrifuge are manually adjusted after the analysis result shows that the moisture content of the solid phase exceeds the standard, so that the time from sampling to adjustment is long, and the development of production activities is influenced by the time of the analysis process.
In summary, the existing piston pusher centrifuge cannot accurately control the concentration of the material in the process of separating the material, cannot timely adjust the operation condition according to the concentration of the material, and cannot timely adjust the operation condition according to the moisture content of the separated solid phase, that is, the prior art cannot realize the adaptive timely control of the piston centrifuge.
Disclosure of Invention
The invention aims to provide a self-adaptive timely control device of a piston pusher centrifuge, and aims to solve the problem that the piston pusher centrifuge in the prior art cannot realize self-adaptive timely control.
In order to achieve the purpose, the invention adopts the following technical scheme: a self-adaptive timely control device of a piston pusher centrifuge comprises a real-time online detection system connected with the piston pusher centrifuge and an automatic control system connected with the real-time online detection system, wherein the real-time online detection system comprises a material concentration online detection device, a machine vibration online detection device, a motor current online detection device and a material moisture online detection device.
The principle and the advantages of the scheme are as follows: in practical application, the real-time online monitoring system performs real-time online detection on material concentration through the material concentration online detection device, performs real-time online detection on vibration conditions in the operation process of the piston pusher centrifuge through the machine vibration online detection device, performs online real-time detection on the operation conditions of the motor through the motor current online detection device, performs real-time online detection on moisture content of solid-phase substances separated by the piston pusher centrifuge through the material moisture online detection device, and the automatic control system performs real-time analysis on detected data and then sends timely adjustment signals to timely adjust operating parameters of the piston pusher centrifuge so as to achieve self-adaptive timely control of the piston pusher centrifuge.
Preferably, as an improvement, the material concentration online detection device is connected to a feed pipeline of the piston pusher centrifuge; the machine vibration online detection device is connected to the bearing position of the piston pusher centrifuge; the motor current online detection device is connected to a main motor of the piston pusher centrifuge; the material moisture online detection device is connected with a solid phase outlet of the piston pusher centrifuge. Therefore, the concentration of the material is detected in real time before entering the piston pusher centrifuge, so that enough time is provided for the adjustment of the piston pusher centrifuge, and the adjustment of the running condition is more timely; vibration energy of the piston pusher centrifuge is mainly transmitted through the bearing, and vibration data detected at the bearing position can more accurately feed back the running vibration condition of the piston pusher centrifuge;
preferably, as an improvement, the automatic control system comprises a PLC programmable controller, a main motor frequency-variable controller, an oil pump motor frequency-variable controller, a display instrument and an automatic control valve, the main motor frequency-variable controller is connected with a main motor of the piston pusher centrifuge, the oil pump motor frequency-variable controller is connected with an oil pump motor of the piston pusher centrifuge, the automatic control valve is connected to a feeding pipeline between the material concentration online monitoring device and the piston pusher centrifuge, and the main motor frequency-variable controller, the oil pump motor frequency-variable controller, the display instrument and the automatic control valve are all connected with the PLC programmable controller. The PLC is used for processing received data, and then outputting signals to enable the executive component to automatically adjust the power of the main motor, the action of the oil pump and the feeding amount.
The invention also provides a self-adaptive timely control method of the piston pusher centrifuge, which uses the self-adaptive timely control device of the piston pusher centrifuge, in the working process of the piston pusher centrifuge, the material concentration of the material to be fed into the piston pusher centrifuge is detected in real time by the material concentration online detection device, the vibration of the piston pusher centrifuge is detected in real time by the machine vibration online detection device, the current of the main motor of the piston pusher centrifuge is detected in real time by the motor current online detection device, the moisture content of the separated solid is detected in real time by the material moisture online detection device, and the detection data is transmitted to the PLC in real time; the PLC analyzes the received data and sends out an instruction, and the opening of the automatic control valve and the operation parameters of the piston pusher centrifuge are adjusted in real time to achieve the self-adaptive operation of the piston pusher centrifuge.
According to the scheme, the material concentration, the machine vibration, the current of the main motor and the separated solid-phase moisture content are detected in real time, the operation parameters of the piston pusher centrifuge are automatically adjusted under the control of the PLC according to the material concentration change and the separation effect which need to be separated, so that the self-adaptive timely control of the piston pusher centrifuge is achieved, the separation effect of the piston pusher centrifuge is timely ensured, and the normal operation of the piston pusher centrifuge can be ensured when the concentration of the separated material changes.
Preferably, as an improvement, in the process of detecting the material concentration in real time, when the material concentration changes and is lower than a set value, the automatic control system controls the automatic control valve to close, feeding to the piston material-pushing centrifuge is stopped, the piston material-pushing centrifuge is in a standby state, and feeding separation is continued after the material concentration in the thickener returns to a normal state; when the material concentration changes and is higher than a set value, the piston pusher centrifuge normally feeds and separates, and the automatic control system monitors the vibration of the piston pusher centrifuge and the current of the main motor. Therefore, the material concentration is detected and adjusted in real time, the materials separated in the piston material-pushing centrifugal machine are kept in a set concentration range, and the influence of the material concentration on the operation of the piston material-pushing centrifugal machine is reduced to a controllable range.
Preferably, as an improvement, the on-line detection device for machine vibration during normal separation of the piston-type material-pushing centrifuge during feeding detects the vibration state of the piston-type material-pushing centrifuge, if the vibration value does not exceed the standard, the piston-type material-pushing centrifuge performs normal feeding separation, and if the vibration value exceeds the standard, the automatic control system controls the opening of the automatic control valve to be reduced so as to reduce the feeding amount, so that the piston-type material-pushing centrifuge performs normal feeding separation continuously. Therefore, the feeding amount of the piston pusher centrifuge can be timely controlled by detecting the vibration value, and the piston pusher centrifuge is automatically controlled to keep a stable working state.
Preferably, as an improvement, after the opening of the automatic control valve is reduced, the feeding amount is reduced, when the vibration value still exceeds the standard, the feeding is stopped, the rotating speed of a main motor is reduced, if the vibration value still exceeds the standard, the machine is stopped, all materials in the machine are removed, and the machine is restarted for standby; if the vibration value returns to normal after the rotating speed of the main motor is reduced, cleaning the residual materials in the rotary drum by using cleaning water at low speed, and then accelerating to normal rotating speed for standby. Therefore, the vibration value can be effectively controlled automatically by adjusting the rotating speed of the main motor and adjusting the feeding amount, so that the piston pusher centrifuge can keep a stable working state.
Preferably, as an improvement, the motor current online detection device detects the current of the main motor in real time in the normal feeding and separating process of the piston pusher centrifuge, if the current of the main motor does not exceed the standard, the main motor feeds normally, and if the current of the main motor exceeds the standard, the automatic control system controls the opening of the automatic control valve to be reduced, so that the feeding amount is reduced, and the current of the main motor returns to be normal. Therefore, the running power condition of the main motor is fed back through real-time detection of the current of the main motor, the feeding amount is adjusted through control of the automatic control valve, and the running condition of the main motor is automatically adjusted in real time, so that the piston pusher centrifuge automatically adjusts and keeps a stable working state in time.
Preferably, as an improvement, the online material moisture detection device in the normal feeding and separating process of the piston pusher centrifuge detects the moisture content of the separated solid phase material in real time, if the moisture content is less than or equal to a set value, the feeding and separating are continued, and if the moisture content is higher than the set value, the automatic control system controls the opening of the automatic control valve to be reduced, the feeding amount is reduced, and the frequency converter of the main motor is controlled to increase the rotating speed of the main motor, so that the feeding and separating are continued after the moisture content is recovered to be normal. Therefore, the piston pusher centrifuge can automatically adjust the moisture content of the separated solid phase in real time, the moisture content of the separated material is kept in the range required by production, and the production quality is ensured.
Preferably, as an improvement, when the moisture content is higher than the set value, if the moisture content cannot be recovered to be normal through the automatic control system, the machine is stopped and the materials in the machine are cleaned, the reason that the moisture content is higher than the set value is manually analyzed, the machine is started to be normally separated again, if the moisture content is recovered to be normal, the normal separation is continued, and if the moisture content is still higher than the set value, the machine is stopped and the reason is manually analyzed until the moisture content is recovered to be normal. Therefore, the quality of material separation can be ensured by matching manual operation with automatic timely adjustment of an automatic control system.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a flowchart of embodiment 2 of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the automatic control system comprises an automatic control system 1, a motor current online detection device 2, a machine vibration online detection device 3, a piston pusher centrifuge 4, a material moisture online detection device 5, an automatic control valve 6, a material concentration online detection device 7 and a thickener 8.
Example 1, substantially as shown in figure 1: a self-adaptive timely control device of a piston pusher centrifuge comprises a real-time online detection system connected with the piston pusher centrifuge 4 and an automatic control system 1 connected with the real-time online detection system. The real-time online monitoring system comprises a material concentration online detection device 7, a machine vibration online detection device 3, a motor current online detection device 2 and a material moisture online detection device 5. The material concentration on-line detection device 7 is connected to a feed pipeline of the piston material pushing centrifuge 4 connected with the discharge end of the thickener 8, and the material concentration on-line detection device 7 adopts an on-line concentration detector in the prior art, such as a GB-CMR tuning fork type on-line concentration meter. The machine vibration on-line detection device 3 is connected to the bearing position of the piston pusher centrifuge 4, and the machine vibration on-line detection device 3 adopts a vibration sensor in the prior art, such as an HZD-B type vibration sensor. The motor current on-line detection device 2 is connected to a main motor of the piston pusher centrifuge 4, and the motor current on-line detection device 2 adopts a current transmitter in the prior art, such as an MIK type current transmitter. The material moisture online detection device 5 is connected with a solid phase outlet of the piston pusher centrifuge 4, and the material moisture online detection device 5 adopts an online moisture tester in the prior art, such as a WKT-R type online moisture tester. The automatic control system 1 comprises a PLC programmable controller, a main motor variable frequency controller, an oil pump motor variable frequency controller, a display instrument and an automatic control valve 6, wherein the main motor variable frequency controller is connected with a main motor of the piston pushing centrifuge 4, the oil pump motor variable frequency controller is connected with an oil pump motor of the piston pushing centrifuge 4, the automatic control valve 6 is connected on a feeding pipeline between the material concentration online monitoring device and the piston pushing centrifuge 4, and the main motor variable frequency controller, the oil pump motor variable frequency controller, the display instrument and the automatic control valve 6 are all connected with the PLC programmable controller. In this embodiment, the PLC programmable controller in the prior art is adopted as the S7 type PLC programmable controller, the variable frequency controller of the main motor and the variable frequency controller of the oil pump motor in the prior art are adopted as the ACS type variable frequency controller, and the display instrument is adopted as the touch display screen in the prior art, such as the GL type touch display screen.
Embodiment 2, as shown in fig. 2, a method for adaptively controlling a piston pusher centrifuge in a timely manner, using the apparatus for adaptively controlling a piston pusher centrifuge in a timely manner described in embodiment 1, during a working process of the piston pusher centrifuge 4, detecting a concentration of a material to be fed into the piston pusher centrifuge 4 in real time by using an online material concentration detection apparatus 7, detecting vibration of the piston pusher centrifuge 4 in real time by using an online machine vibration detection apparatus 3, detecting a current of a main motor of the piston pusher centrifuge 4 in real time by using an online motor current detection apparatus 2, detecting a moisture content of a separated solid in real time by using an online material moisture detection apparatus 5, and transmitting detection data to a PLC programmable controller in real time; the PLC analyzes the received data and sends out instructions, and the opening of the automatic control valve 6 and the operation parameters of the piston pusher centrifuge 4 are adjusted in real time to achieve the self-adaptive operation of the piston pusher centrifuge 4.
In the process of detecting the material concentration in real time, when the material concentration changes and is lower than a set value, the automatic control system 1 controls the automatic control valve 6 to close, the feeding to the piston material-pushing centrifugal machine 4 is stopped, the piston material-pushing centrifugal machine 4 is in a standby state, and the feeding separation is continued after the material concentration in the thickener 8 returns to a normal state; when the material concentration changes and is higher than a set value, the piston pusher centrifuge 4 normally feeds and separates, and the automatic control system 1 monitors the vibration of the piston pusher centrifuge 4 and the current of the main motor.
The machine vibration online detection device 3 detects the vibration state of the piston pusher centrifuge 4 in the normal separation process of the feed of the piston pusher centrifuge 4, if the vibration value does not exceed the standard, the piston pusher centrifuge 4 normally feeds and separates, and if the vibration value exceeds the standard, the automatic control system 1 controls the opening of the automatic control valve 6 to reduce the feed amount, so that the piston pusher centrifuge 4 normally continues to feed and separate.
After the opening of the automatic control valve 6 is reduced, the feeding amount is reduced, when the vibration value still exceeds the standard, the feeding is stopped, the rotating speed of the main motor is reduced, if the vibration value still exceeds the standard, the machine is stopped, all the materials in the machine are removed, and the machine is restarted for standby; if the vibration value returns to normal after the rotating speed of the main motor is reduced, cleaning the residual materials in the rotary drum by using cleaning water at low speed, and then accelerating to normal rotating speed for standby.
The motor current online detection device 2 detects the current of the main motor in real time in the normal feeding and separating process of the piston pusher centrifuge 4, if the current of the main motor does not exceed the standard, the material is normally fed, and if the current of the main motor exceeds the standard, the automatic control system 1 controls the opening of the automatic control valve 6 to be reduced, so that the feeding amount is reduced until the current of the main motor returns to the normal state.
The online material moisture detection device 5 detects moisture content of separated solid-phase substances in real time in the normal feeding and separating process of the piston pusher centrifuge 4, if the moisture content is less than or equal to a set value, feeding and separating are continued, if the moisture content is higher than the set value, the automatic control system 1 controls the opening of the automatic control valve 6 to be reduced, feeding amount is reduced, the frequency converter of the main motor is controlled to increase the rotating speed of the main motor, and feeding and separating are continued after the moisture content is recovered to be normal.
If the moisture content is higher than the set value, the automatic control system 1 stops the machine and cleans the materials in the machine if the moisture content is not recovered to be normal, the reason that the moisture content is higher than the set value is manually analyzed, the machine is continuously started for normal separation, if the moisture content is recovered to be normal, the normal separation is continuously performed, and if the moisture content is still higher than the set value, the machine is continuously stopped and the reason is manually analyzed until the moisture content is recovered to be normal.
The above are merely examples of the present invention and common general knowledge of known specific technical solutions and/or characteristics in the solutions has not been described herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. The utility model provides a piston pushes away material centrifuge self-adaptation timing control device which characterized in that: the automatic control system comprises a real-time online detection system connected with the piston pusher centrifuge and an automatic control system connected with the real-time online monitoring system, wherein the real-time online monitoring system comprises a material concentration online detection device, a machine vibration online detection device, a motor current online detection device and a material moisture online detection device.
2. The adaptive timely control device of the piston pusher centrifuge according to claim 1, characterized in that: the material concentration online detection device is connected to a feeding pipeline of the piston pusher centrifuge; the machine vibration online detection device is connected to a bearing position of the piston pusher centrifuge; the motor current online detection device is connected to a main motor of the piston pusher centrifuge; the online material moisture detection device is connected with a solid phase outlet of the piston pusher centrifuge.
3. The adaptive timely control device of the piston pusher centrifuge as claimed in claim 2, wherein: the automatic control system comprises a PLC (programmable logic controller), a main motor variable frequency controller, an oil pump motor variable frequency controller, a display instrument and an automatic control valve, wherein the main motor variable frequency controller is connected with a main motor of the piston pushing centrifuge, the oil pump motor variable frequency controller is connected with an oil pump motor of the piston pushing centrifuge, the automatic control valve is connected on a feeding pipeline between the material concentration online monitoring device and the piston pushing centrifuge, and the main motor variable frequency controller, the oil pump motor variable frequency controller, the display instrument and the automatic control valve are all connected with the PLC.
4. A self-adaptive timely control method for a piston pusher centrifuge, which uses the self-adaptive timely control device for a piston pusher centrifuge according to claim 3, characterized in that: in the working process of the piston material-pushing centrifuge, the material concentration of a material to be fed into the piston material-pushing centrifuge is detected in real time through a material concentration online detection device, the vibration of the piston material-pushing centrifuge is detected in real time through a machine vibration online detection device, the current of a main motor of the piston material-pushing centrifuge is detected in real time through a motor current online detection device, the moisture content of separated solid is detected in real time through a material moisture online detection device, and detection data are transmitted to a PLC (programmable logic controller) in real time; the PLC analyzes the received data and sends out an instruction, and the opening of the automatic control valve and the operation parameters of the piston pusher centrifuge are adjusted in real time to achieve the self-adaptive operation of the piston pusher centrifuge.
5. The self-adaptive timely control method of the piston pusher centrifuge according to claim 4, characterized in that: in the process of detecting the material concentration in real time, when the material concentration changes and is lower than a set value, the automatic control system controls the automatic control valve to close, feeding to the piston material-pushing centrifugal machine is stopped, the piston material-pushing centrifugal machine is in a standby state, and feeding separation is continued after the material concentration in the thickener returns to a normal state; when the material concentration changes and is higher than a set value, the piston pusher centrifuge normally feeds and separates, and the automatic control system monitors the vibration of the piston pusher centrifuge and the current of the main motor.
6. The self-adaptive timely control method of the piston pusher centrifuge according to claim 5, characterized in that: the on-line detection device for the vibration of the machine detects the vibration state of the piston pusher centrifuge in the normal separation process of the feeding of the piston pusher centrifuge, if the vibration value does not exceed the standard, the piston pusher centrifuge normally feeds and separates, and if the vibration value exceeds the standard, the automatic control system controls the opening of the automatic control valve to be reduced so as to reduce the feeding amount and enable the piston pusher centrifuge to normally continue to feed and separate.
7. The self-adaptive timely control method for the piston pusher centrifuge according to claim 6, characterized in that: after the opening of the automatic control valve is reduced to reduce the feeding amount, stopping feeding and reducing the rotating speed of a main motor when the vibration value still exceeds the standard, stopping the machine and completely removing the materials in the machine if the vibration value still exceeds the standard, and restarting for standby; if the vibration value returns to normal after the rotating speed of the main motor is reduced, cleaning the residual materials in the rotary drum by using cleaning water at low speed, and then accelerating to normal rotating speed for standby.
8. The self-adaptive timely control method of the piston pusher centrifuge according to claim 7, characterized in that: the motor current on-line detection device detects the current of the main motor in real time in the normal feeding and separating process of the piston pusher centrifuge, if the current of the main motor does not exceed the standard, the material is normally fed, and if the current of the main motor exceeds the standard, the automatic control system controls the opening of the automatic control valve to be reduced, so that the feeding amount is reduced until the current of the main motor returns to the normal state.
9. The self-adaptive timely control method of the piston pusher centrifuge according to claim 8, characterized in that: the online material moisture detection device detects the moisture content of the separated solid phase material in real time in the normal feeding and separating process of the piston pusher centrifuge, if the moisture content is less than or equal to a set value, the feeding and separating are continued, if the moisture content is higher than the set value, the automatic control system controls the opening of the automatic control valve to be reduced, the feeding amount is reduced, the frequency converter of the main motor is controlled to increase the rotating speed of the main motor, and the feeding and separating are continued after the moisture content is recovered to be normal.
10. The self-adaptive timely control method of the piston pusher centrifuge according to claim 9, characterized in that: if the moisture content is higher than the set value, the automatic control system stops and cleans the materials in the machine if the moisture content cannot be recovered to normal through the automatic control system, the reason that the moisture content is higher than the set value is analyzed manually, the machine is started to perform normal separation continuously, if the moisture content is recovered to normal, the normal separation is performed continuously, and if the moisture content is still higher than the set value, the machine is stopped and the reason is analyzed manually until the moisture content is recovered to normal.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1256384A2 (en) * | 1997-07-18 | 2002-11-13 | Baker Hughes Incorporated | Method and apparatus for controlling vertical and horizontal basket centrifuges |
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| CN110170383A (en) * | 2019-05-29 | 2019-08-27 | 南京中船绿洲机器有限公司 | A kind of intelligence horizontal screw machine operation control system and method |
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| CN211160244U (en) * | 2019-12-11 | 2020-08-04 | 广州广重分离机械有限公司 | Full-automatic control piston pushing centrifugal device |
| CN213133639U (en) * | 2020-09-02 | 2021-05-07 | 南风集团淮安元明粉有限公司 | A device for adjusting anhydrous sodium sulphate centrifugation is reinforced |
| CN215550126U (en) * | 2021-08-29 | 2022-01-18 | 昌江金达乳胶制品有限公司 | Natural concentrated latex preparation is with centrifuge that has automatic feed mechanism |
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2022
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| EP1256384A2 (en) * | 1997-07-18 | 2002-11-13 | Baker Hughes Incorporated | Method and apparatus for controlling vertical and horizontal basket centrifuges |
| CN203380011U (en) * | 2013-07-26 | 2014-01-08 | 开封万盛新材料有限公司 | Automatic feeding control device for decanter centrifuge |
| CN104785381A (en) * | 2015-03-24 | 2015-07-22 | 苏州华冲精密机械有限公司 | Intelligent horizontal screw centrifuge used for food separation |
| CN107661817A (en) * | 2017-10-16 | 2018-02-06 | 南京中船绿洲机器有限公司 | A kind of disk centrifuge control system and its control method |
| CN110170383A (en) * | 2019-05-29 | 2019-08-27 | 南京中船绿洲机器有限公司 | A kind of intelligence horizontal screw machine operation control system and method |
| CN210304157U (en) * | 2019-07-15 | 2020-04-14 | 苏州优耐特机械制造有限公司 | Horizontal spiral centrifuge capable of automatically correcting differential rotation speed in advance on line |
| CN211160244U (en) * | 2019-12-11 | 2020-08-04 | 广州广重分离机械有限公司 | Full-automatic control piston pushing centrifugal device |
| CN213133639U (en) * | 2020-09-02 | 2021-05-07 | 南风集团淮安元明粉有限公司 | A device for adjusting anhydrous sodium sulphate centrifugation is reinforced |
| CN215550126U (en) * | 2021-08-29 | 2022-01-18 | 昌江金达乳胶制品有限公司 | Natural concentrated latex preparation is with centrifuge that has automatic feed mechanism |
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