CN114405110A - Intelligent backwash filter control system - Google Patents
Intelligent backwash filter control system Download PDFInfo
- Publication number
- CN114405110A CN114405110A CN202111543696.9A CN202111543696A CN114405110A CN 114405110 A CN114405110 A CN 114405110A CN 202111543696 A CN202111543696 A CN 202111543696A CN 114405110 A CN114405110 A CN 114405110A
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- China
- Prior art keywords
- control unit
- valve
- differential pressure
- control system
- unit
- Prior art date
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Links
- 238000001514 detection method Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 claims 2
- 238000011001 backwashing Methods 0.000 abstract description 15
- 238000001914 filtration Methods 0.000 abstract description 6
- 239000000110 cooling liquid Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000017105 transposition Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/23—Supported filter elements arranged for outward flow filtration
- B01D29/27—Filter bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
- B01D29/606—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/143—Filter condition indicators
- B01D35/1435—Filter condition indicators with alarm means
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model provides an intelligent back flush filter control system, belongs to intelligent back flush filter control system technical field, including detecting element, PLC control unit, HMI control unit and execution unit according to the logical operation of setting for, realizes intelligent back flush, reduces and blocks up, extension equipment life provides work efficiency. The control system is utilized to give full play to the characteristics and the performance of the backwashing filter, and simultaneously breaks through the traditional filtering technology, realizes the intelligent control of backwashing, really realizes the maintenance-free, prolongs the service life of the cooling liquid, improves the filtering precision and improves the efficiency of the machine tool.
Description
Technical Field
The invention belongs to the technical field of intelligent backwashing filter control systems, and particularly relates to an intelligent backwashing filter control system.
Background
In general, when a machine tool is processed, cooling liquid needs to be filtered by a paper bag filter and lifted by a lifting pump to cool a tool and a workpiece. If traditional bag formula filters like this if not in time change the container bag, not only can reduce the filter effect, can cause the jam even to need the lathe to shut down and change the container bag, thereby reduced lathe machining efficiency. If the intelligent back-washing filter is adopted and automatic control is adopted, solid particles attached to the filter element are timely cleaned, so that the filter element is high in filtering reliability, long in service life and free of maintenance, and the efficiency of the machine tool is improved.
Disclosure of Invention
The invention aims to provide an intelligent backwash filter control system, which realizes backwash intelligent control and is free of maintenance really.
The technical scheme is as follows:
the detection unit, the PLC control unit, the HMI control unit and the execution unit operate according to set logic, intelligent backwashing is achieved, blockage is reduced, the service life of equipment is prolonged, and working efficiency is improved.
The advantages are that:
the control system is utilized to give full play to the characteristics and the performance of the backwashing filter, and simultaneously breaks through the traditional filtering technology, realizes the intelligent control of backwashing, really realizes the maintenance-free, prolongs the service life of the cooling liquid, improves the filtering precision and improves the efficiency of the machine tool.
Drawings
FIG. 1 is a schematic view of a backwash filter.
FIG. 2 is a logic diagram of the intelligent backwash filter control system.
FIG. 3 is a flow chart of the intelligent backwash filter control system.
The device comprises a blowdown valve 1, an outlet 2, a differential pressure switch 3, an inlet 4, an on-site detection switch 5 and a transposition valve 6.
Detailed Description
Fig. 1 is a prior art apparatus.
An intelligent backwash filter control system: the system comprises a detection unit, a PLC control unit, an HMI control unit and an execution unit.
The detection unit comprises an in-place detection switch 5 and a differential pressure switch 3.
The detection unit is correspondingly connected with the signal input end of the PLC control unit.
The PLC control unit and the HMI control unit are correspondingly connected in a bidirectional mode.
The signal output end of the PLC control unit is connected with the signal input end of the execution unit.
The execution unit comprises an indexing valve 6 and a blow-down valve 1.
The detection unit is a detection switch and comprises an in-place detection switch 5 (a backwashing filter element in-place detection switch 5) and a differential pressure switch 3 (a filter element blockage switch).
The PLC control unit is used for parameter transmission, input signal acquisition, data processing and signal output execution of a human-computer interface, so as to control the execution unit. The PLC control unit is connected with the HMI control unit through a network protocol and controls the execution unit by combining with the input signal, and meanwhile, the PLC control unit can interact with the machine tool.
The HMI control unit is used for transmitting data to the PLC unit, and monitoring the state of the whole system and feeding back fault information. The HMI control unit can complete the selection of processing materials, the setting of timing recoil time and differential pressure recoil time through the touch screen, and can monitor the running state and fault information of the whole filtering system.
The execution unit comprises a machine indexing valve 6 (backwash filter indexing valve) and a blowdown valve 1.
Logic of the control method:
(1) and starting.
(2) Selecting materials of touch screen processing products, setting timing recoil time and differential pressure recoil time.
(3) The touch screen selects the mode (local or remote).
(4) The activation signal arrives and the indexing valve 6 is activated.
(5) The position detection switch 5 is closed and the index valve 6 is stopped.
(6) The index valve 6 stops and opens the waste valve 1 after a delay of 0.2S.
(7) The blowoff valve 1 is opened and kept closed for 1.5S.
(8) After a delay of 0.2S for the closing of the waste valve 1, the following is divided.
Case 1: and (4) the backwashing filter element is not blocked (the differential pressure switch 3 is not operated), and the process from the step (4) to the step (8) is immediately repeated when the set time of the backwashing is reached.
Case 2: and (4) blocking the backwashing filter element (the action of the differential pressure switch 3), and immediately repeating the process from the step (4) to the step (8) when the set time of differential pressure backwashing is reached.
The PLC control unit is connected with an alarm, and comprises the following steps:
the action of the differential pressure switch 3 lasts for 5 minutes, and the back washing filter element is blocked to alarm.
When the transposition valve 6 is started, the backwashing filter element does not give an alarm in situ.
After the transposition valve 6 is electrified, the position detection switch 5 is not disconnected within 2 seconds, and the transposition valve 6 starts a timeout alarm.
After the transposition valve 6 is electrified, the on-position detection switch 5 is disconnected for 3 seconds and is not closed, and the transposition valve 6 gives an alarm when in-position.
Claims (2)
1. An intelligent backwash filter control system: the system comprises a detection unit, a PLC control unit, an HMI control unit and an execution unit; the method is characterized in that:
the detection unit comprises an in-place detection switch (5) and a differential pressure switch (3);
the detection unit is correspondingly connected with the signal input end of the PLC control unit;
the PLC control unit is in bidirectional corresponding connection with the HMI control unit;
the signal output end of the PLC control unit is connected with the signal input end of the execution unit;
the execution unit comprises an indexing valve (6) and a blowdown valve (1).
2. The intelligent backwash filter control system as claimed in claim 1, wherein: the logic of the control of the detection unit, the PLC control unit, the HMI control unit and the execution unit is as follows:
1) starting;
2) selecting materials of touch screen processing products, setting timing recoil time and differential pressure recoil time;
3) selecting a mode by the touch screen;
4) when the starting signal arrives, the indexing valve (6) is started;
5) the on-site detection switch (5) is closed, and the indexing valve (6) is stopped;
6) the index valve (6) is delayed by 0.2S after stopping and then the blow-down valve (1) is opened;
7) the blowdown valve (1) is opened and kept for 1.5 seconds and then closed;
8) after the drain valve (1) is closed and delayed for 0.2S, the following conditions are divided;
when the differential pressure switch (3) does not act, the process from the step 4) to the step 8) is immediately repeated when the timing recoil set time is reached;
when the differential pressure switch (3) is operated, the process from the step 4) to the step 8) is immediately repeated when the differential pressure recoil set time is reached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111543696.9A CN114405110A (en) | 2021-12-16 | 2021-12-16 | Intelligent backwash filter control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111543696.9A CN114405110A (en) | 2021-12-16 | 2021-12-16 | Intelligent backwash filter control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114405110A true CN114405110A (en) | 2022-04-29 |
Family
ID=81266849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111543696.9A Pending CN114405110A (en) | 2021-12-16 | 2021-12-16 | Intelligent backwash filter control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114405110A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101496970A (en) * | 2009-01-23 | 2009-08-05 | 荆州市明德科技有限公司 | On-line bidirectional automatic backwashing type filtering equipment |
| CN201492997U (en) * | 2009-09-09 | 2010-06-02 | 无锡市创恒机械有限公司 | High-pressure automatic back washing filter device of emulsified liquid |
| CN204732925U (en) * | 2015-06-25 | 2015-10-28 | 魏强 | A kind of Intelligent charging system |
| CN206492270U (en) * | 2017-02-27 | 2017-09-15 | 北京德安源环境科技发展有限公司 | A kind of straight-through type filter |
| CN206715429U (en) * | 2017-05-22 | 2017-12-08 | 重庆江川化工（集团）有限公司 | A kind of filter suitable for epoxy pouring sealant production |
| CN107754419A (en) * | 2017-11-27 | 2018-03-06 | 河南利源燃气有限公司 | The efficient control system and control method of a kind of disc filter |
-
2021
- 2021-12-16 CN CN202111543696.9A patent/CN114405110A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101496970A (en) * | 2009-01-23 | 2009-08-05 | 荆州市明德科技有限公司 | On-line bidirectional automatic backwashing type filtering equipment |
| CN201492997U (en) * | 2009-09-09 | 2010-06-02 | 无锡市创恒机械有限公司 | High-pressure automatic back washing filter device of emulsified liquid |
| CN204732925U (en) * | 2015-06-25 | 2015-10-28 | 魏强 | A kind of Intelligent charging system |
| CN206492270U (en) * | 2017-02-27 | 2017-09-15 | 北京德安源环境科技发展有限公司 | A kind of straight-through type filter |
| CN206715429U (en) * | 2017-05-22 | 2017-12-08 | 重庆江川化工（集团）有限公司 | A kind of filter suitable for epoxy pouring sealant production |
| CN107754419A (en) * | 2017-11-27 | 2018-03-06 | 河南利源燃气有限公司 | The efficient control system and control method of a kind of disc filter |
Non-Patent Citations (1)
| Title |
|---|
| 张榆进主编: "《西门子PLC与变频器、触摸屏实训教程》", 31 August 2019, 云南大学出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20220429 |