CN110935249A - Self-cleaning control method and device for air filter - Google Patents
Self-cleaning control method and device for air filter Download PDFInfo
- Publication number
- CN110935249A CN110935249A CN201811113480.7A CN201811113480A CN110935249A CN 110935249 A CN110935249 A CN 110935249A CN 201811113480 A CN201811113480 A CN 201811113480A CN 110935249 A CN110935249 A CN 110935249A
- Authority
- CN
- China
- Prior art keywords
- pressure difference
- diaphragm
- cleaning
- clean
- threshold value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The application provides a self-cleaning control method and a self-cleaning control device for an air filter, wherein the method comprises the following steps: acquiring the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe; and judging whether the pressure difference is smaller than an abnormal threshold value, if so, sequentially opening the diaphragm electromagnetic valves according to a preset first cleaning period, and controlling the back-flushing air source spray head to clean each filter cylinder through the opened diaphragm electromagnetic valves, if not, judging whether the pressure difference is between an alarm threshold value and a limit threshold value, if so, simultaneously opening the diaphragm electromagnetic valves according to a preset second cleaning period, and controlling the back-flushing air source spray head to clean each filter cylinder through the opened diaphragm electromagnetic valves. According to the method, the filter cartridge corresponding to the opened membrane electromagnetic valve can be cleaned, and meanwhile, the filter cartridges corresponding to other membrane electromagnetic valves which are not opened can normally filter the dust-containing air, so that the problem that the filtering of the dust-containing air must be stopped in the process of cleaning the filter cartridges in the prior art is solved.
Description
Technical Field
The application relates to the technical field of automatic control, in particular to a self-cleaning control method and device for an air filter.
Background
Air compressors are widely used in the industrial field as a means for compressing air. If the air that gets into the air compressor machine contains the dust, cause the wearing and tearing of air compressor machine easily, for example, the dust in the air is at the blade surface deposit scale deposit of air compressor machine, causes the dynamic balance precision of rotor in the air compressor machine to descend, leads to the life reduction of air compressor machine. In addition, harmful chemical components in the dust easily cause rusting or corrosion of the air compressor. Therefore, the air needs to be filtered before entering the air compressor for compression.
The existing air filtering device is generally an air filter, and referring to the schematic structural diagram shown in fig. 1, the air filter includes: the device comprises a coarse filter screen 1, a differential pressure controller 2, a differential pressure alarm 3, a PLC automatic control unit 4, an electric cabinet 5, an air storage cylinder 6, a diaphragm solenoid valve 7, a back-blowing air source spray head 8, a venturi 9, a filter cylinder 10, a clean air outlet pipe 11 and a negative pressure probe 12. In operation, dust-containing air enters the interior of the air filter from the coarse filter screen 1 and is then filtered by the filter cartridge 10, and dust in the dust-containing air is blocked on the outer surface of the filter cartridge 10 due to the combined effects of gravity inertial diffusion and contact retention, so that clean air is formed after the dust-containing air is filtered by the filter cartridge 10. The clean air reaches the clean air outlet pipe 11 through the venturi 9, and the clean air outlet pipe 11 is connected with the air inlet of the air compressor, so that the clean air is provided for the air compressor.
In the case of long-term use of the air filter, the pressure difference between the outside of the filter cartridge 10 and the clean air outlet pipe 11 is increased due to dust adsorbed on the surface of the filter cartridge 10, and if the pressure difference is greater than the first threshold, the dust-containing air outside the filter cartridge 10 is difficult to enter the inside of the filter cartridge 10, which affects the formation of clean air, so a self-cleaning control method needs to be provided inside the air filter, so that the air filter can automatically clean the filter cartridge 10. The existing self-cleaning control method utilizes a pressure difference controller to measure the pressure difference between the outside of the filter cylinder 10 and the pressure measured by a negative pressure probe 12, if the pressure difference is greater than a second threshold value, the PLC automatic control unit 4 controls each diaphragm electromagnetic valve 7 to be opened simultaneously, gas in the gas storage cylinder 6 flows through each diaphragm electromagnetic valve 7, the gas is conveyed to the inside of the filter cylinder 10 through the back flushing gas source nozzle 8, the dust adsorbed on the outer surface of the filter cylinder 10 is flushed down in the process that the gas flows from the inside of the filter cylinder 10 to the outside, so that the pressure difference is reduced, and after the pressure difference reaches a normal value, the PLC automatic control unit 4 controls each diaphragm.
However, in the course of research, the inventors of the present application found that, in the self-cleaning control method of the conventional air filter, since the respective diaphragm solenoid valves 7 are simultaneously opened to allow the gas to enter the filter cartridge 10 during the cleaning of the filter cartridge 10, the cleaning of the filter cartridge 10 is achieved during the gas flowing from the inside to the outside of the filter cartridge 10, and during this process, the dust-containing air cannot enter the inside of the filter cartridge 10 from the outside of the filter cartridge 10, and thus the filtering of the dust-containing air cannot be performed. That is, during cleaning of the filter cartridge 10, the filtration of the dust-laden air must be terminated, resulting in a drop in the yield of clean air.
Disclosure of Invention
The application provides a self-cleaning control method and a self-cleaning control device of an air filter, which are used for solving the problem that the filtration of dust-containing air must be stopped in the process of cleaning a filter cylinder.
The first aspect of the application provides a self-cleaning control method of air cleaner, air cleaner is provided with multiunit diaphragm solenoid valve, every group a plurality of blowback air supply shower nozzles of diaphragm solenoid valve control, every blowback air supply shower nozzle corresponds a section of thick bamboo of straining, blowback air supply shower nozzle is used for strain a section of thick bamboo and provide gas, include:
103, sequentially opening diaphragm electromagnetic valves according to a preset first cleaning period, and controlling a back-flushing air source spray head to clean each filter cartridge through the opened diaphragm electromagnetic valves;
and 106, simultaneously opening the diaphragm electromagnetic valves according to a preset second cleaning period, and controlling the back-flushing air source spray head to clean each filter cartridge through the opened diaphragm electromagnetic valves.
Optionally, if it is determined that the pressure difference is between the abnormal threshold and the alarm threshold through the judgment in step 104, according to the received manual operation, opening a diaphragm solenoid valve corresponding to the manual operation, and controlling a blowback air source nozzle to clean each filter cartridge through the opened diaphragm solenoid valve;
and/or the presence of a gas in the gas,
and if the pressure difference is determined to be not less than the limit threshold value through the judgment of the step 105, opening a diaphragm electromagnetic valve corresponding to the manual operation according to the received manual operation, and controlling a back-flushing air source spray head to clean each filter cartridge through the opened diaphragm electromagnetic valve.
Optionally, sequentially opening the diaphragm solenoid valves according to a preset first cleaning period, and controlling the blowback air source nozzles to clean the filter cartridges through the opened diaphragm solenoid valves includes:
Optionally, the simultaneously opening the diaphragm solenoid valve according to the preset second cleaning period, and controlling the blowback air source nozzle to clean each filter cartridge through the opened diaphragm solenoid valve includes:
Optionally, the opening, according to the received manual operation, the diaphragm solenoid valve corresponding to the manual operation, and controlling the blowback air source nozzle to clean each filter cartridge through the opened diaphragm solenoid valve includes:
The second aspect of this application provides a self-cleaning controlling means of air cleaner, air cleaner is provided with multiunit diaphragm solenoid valve, every group a plurality of blowback air supply shower nozzles of diaphragm solenoid valve control, every blowback air supply shower nozzle corresponds one and strains a section of thick bamboo, blowback air supply shower nozzle is used for doing it provides gas to strain a section of thick bamboo, include:
the acquisition module is used for acquiring the pressure difference between the outside of the filter cylinder and the pipe orifice of the clean air outlet pipe;
the first judgment module is used for judging whether the pressure difference is smaller than an abnormal threshold value or not, if the pressure difference is smaller than the abnormal threshold value, the operation of the first cleaning module is executed, and if the pressure difference is not smaller than the abnormal threshold value, the operation of the second judgment module is executed;
the first cleaning module is used for sequentially opening the diaphragm electromagnetic valves according to a preset first cleaning period and controlling the back-blowing air source spray heads to clean the filter cartridges through the opened diaphragm electromagnetic valves;
the second judgment module is used for judging whether the pressure difference is greater than an alarm threshold value or not, and if the pressure difference is greater than the alarm threshold value, the operation of the third judgment module is executed;
the third judgment module is used for judging whether the pressure difference is smaller than a limit threshold value or not, and if the pressure difference is smaller than the limit threshold value, the operation of the second cleaning module is executed;
and the second cleaning module is used for simultaneously opening the diaphragm electromagnetic valves according to a preset second cleaning period and controlling the back-blowing air source spray heads to clean the filter cartridges through the opened diaphragm electromagnetic valves.
Optionally, the apparatus further comprises:
the third cleaning module is used for opening the diaphragm electromagnetic valve corresponding to the manual operation according to the received manual operation if the second judging module determines that the pressure difference is between the abnormal threshold and the alarm threshold, and controlling the back-flushing air source spray head to clean each filter cylinder through the opened diaphragm electromagnetic valve;
and/or the presence of a gas in the gas,
and the fourth cleaning module is used for opening the diaphragm electromagnetic valve corresponding to the manual operation according to the received manual operation if the third judgment module determines that the pressure difference is not less than the limit threshold, and controlling the back-flushing air source spray head to clean each filter cylinder through the opened diaphragm electromagnetic valve.
Optionally, the first cleaning module comprises:
the first diaphragm electromagnetic valve control unit is used for sequentially opening the diaphragm electromagnetic valves according to the sequence of the serial numbers from small to large, and closing the diaphragm electromagnetic valves after the diaphragm electromagnetic valves stay for a first preset time period, wherein the opening time interval of two adjacent diaphragm electromagnetic valves is a second preset time period, and the first cleaning period is the sum of the first preset time period and the second preset time period;
the first judgment unit is used for acquiring a first pressure difference after each group of diaphragm solenoid valves perform one opening and closing operation, and judging whether the first pressure difference is smaller than a normal threshold value, wherein the first pressure difference is the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe after each group of diaphragm solenoid valves perform one opening and closing operation;
and the determining unit is used for determining an execution result according to the judgment condition of the judging unit, wherein each group of the diaphragm electromagnetic valves is closed if the first pressure difference is smaller than a normal threshold value, and the operation of the diaphragm electromagnetic valve control unit is executed again if the first pressure difference is not smaller than the normal threshold value.
Optionally, the second cleaning module comprises:
the second diaphragm electromagnetic valve control unit is used for simultaneously opening each group of diaphragm electromagnetic valves and closing each group of diaphragm electromagnetic valves after staying for a third preset time period;
the second judgment unit is used for acquiring a second pressure difference and judging whether the second pressure difference is smaller than an alarm threshold value, wherein the second pressure difference is the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe after the second diaphragm electromagnetic valve control unit is executed;
and the first circulating unit is used for executing the operation of a third cleaning module if the second pressure difference is smaller than an alarm threshold value, and executing the operation of the second diaphragm electromagnetic valve control unit again after a fourth preset time interval if the second pressure difference is not smaller than the alarm threshold value, wherein the second cleaning period is the sum of the third preset time interval and the fourth preset time interval.
Optionally, the third cleaning module comprises:
the third diaphragm electromagnetic valve control unit is used for opening the diaphragm electromagnetic valves corresponding to the manual operation according to the received manual operation, each group of diaphragm electromagnetic valves stays for a fifth preset time period after being opened, and the diaphragm electromagnetic valves are closed after the staying time is over;
the third judgment unit is used for acquiring a third pressure difference and judging whether the third pressure difference meets a switching condition, wherein the third pressure difference is the pressure difference between the outside of the filter cylinder and the opening of the clean air outlet pipe after the diaphragm solenoid valve is closed;
the switching unit is used for switching a mode for cleaning the filter cylinders according to an interval where the third pressure difference is located if the third pressure difference meets a switching condition, wherein if the third pressure difference is smaller than an abnormal threshold value, diaphragm solenoid valves are sequentially opened according to a preset first cleaning period, the opened diaphragm solenoid valves are used for controlling the back-blowing air source nozzles to clean the filter cylinders, and if the third pressure difference is between a limit threshold value and an alarm threshold value, the diaphragm solenoid valves are simultaneously opened according to a preset second cleaning period, and the opened diaphragm solenoid valves are used for controlling the back-blowing air source nozzles to clean the filter cylinders; and if the third pressure difference does not meet the switching condition, after a sixth preset time interval, the operation of the third diaphragm electromagnetic valve control unit is executed again.
The application provides a self-cleaning control method and a self-cleaning control device for an air filter, wherein the method comprises the following steps: acquiring the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe; and judging whether the pressure difference is smaller than an abnormal threshold value, if so, sequentially opening the diaphragm solenoid valves according to a preset first cleaning period, controlling the back-flushing air source spray head to clean each filter cylinder through the opened diaphragm solenoid valves, if not, judging whether the pressure difference is between an alarm threshold value and a limit threshold value, if so, simultaneously opening the diaphragm solenoid valves according to a preset second cleaning period, and controlling the back-flushing air source spray head to clean each filter cylinder through the opened diaphragm solenoid valves.
According to the method, under the condition that the pressure difference is smaller than the abnormal threshold value, diaphragm electromagnetic valves are sequentially opened according to a preset first cleaning period, and the opened diaphragm electromagnetic valves are used for controlling the back-blowing air source spray head to clean each filter cylinder. When the filter cartridge corresponding to the opened membrane electromagnetic valve is cleaned, the filter cartridges corresponding to other membrane electromagnetic valves which are not opened can normally filter the dust-containing air, so that the problem that the filtering of the dust-containing air must be stopped in the process of cleaning the filter cartridges in the prior art is solved, and the yield of the clean air is further improved.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an air filter provided in the prior art;
FIG. 2 is a flowchart illustrating a method for controlling self-cleaning of an air filter according to an embodiment of the present disclosure;
FIG. 3 is a flowchart illustrating a method for cleaning according to a first cleaning cycle in a self-cleaning control method for an air filter according to an embodiment of the present disclosure;
FIG. 4 is a flowchart illustrating a method for performing a cleaning operation according to a second cleaning cycle in a self-cleaning control method for an air filter according to an embodiment of the present disclosure;
FIG. 5 is a flowchart illustrating a method for cleaning according to a received manual operation in a self-cleaning control method for an air filter according to an embodiment of the present application;
FIG. 6 is a schematic structural diagram of a self-cleaning control device of an air filter according to an embodiment of the present application.
Detailed Description
In order to solve the problem that the filtration of dust-containing air must be stopped in the process of cleaning the filter cartridge, the application provides a self-cleaning control method and a self-cleaning control device of the air filter.
In the prior art, a PLC automatic control unit and an air filter are integrally packaged, a pressure difference controller is used for measuring the pressure difference between the outside of a filter cartridge and the opening of a clean air outlet pipe, the pressure difference controller transmits a pressure difference signal to the PLC automatic control unit, and the PLC automatic control unit determines whether to filter the filter cartridge according to the range of the pressure difference. Because the program set in the PLC automatic control unit is fixed, the conventional self-cleaning air filter can only clean the filter cartridge according to the fixed program set by the PLC automatic control unit, but the cleaning conditions of the filter cartridge are different under different process conditions, for example, the cleaning cycle or the cleaning duration of each cleaning cycle is different, and the self-cleaning air filter provided by the prior art cannot adjust the conditions for cleaning the filter cartridge according to the process conditions. In this case, in the self-cleaning control method corresponding to the fixed program set in the PLC automatic control unit, each diaphragm solenoid valve needs to be opened simultaneously, so that the gas enters the filter cartridge and further cleans the filter cartridge, and in this process, the dust-containing air cannot enter the filter cartridge from the outside of the filter cartridge, and the dust-containing air cannot be filtered, which results in a decrease in the yield of clean air.
In the application, at first, the PLC automatic control unit in the original self-cleaning air filter is replaced by a programmable controller, in an achievable mode, the original PLC automatic control unit is replaced by a Siemens S7-200CN programmable controller, and the relay corresponding to the diaphragm electromagnetic valve is controlled to lose power through program operation in a CPU of the S7-200CN programmable controller, wherein under the condition that the relay is powered on, the diaphragm electromagnetic valve corresponding to the relay is opened, so that the diaphragm electromagnetic valve is controlled to perform a back-blowing self-cleaning process, and under the condition that the relay is powered off, the diaphragm electromagnetic valve corresponding to the relay is closed, so that the diaphragm electromagnetic valve is controlled to stop the back-blowing self-cleaning process.
Referring to a work flow chart shown in fig. 2, an embodiment of the present application provides a self-cleaning control method for an air filter, where the air filter is provided with multiple sets of diaphragm electromagnetic valves, each set of diaphragm electromagnetic valves controls multiple back-blowing air source nozzles, each back-blowing air source nozzle corresponds to a filter cartridge, and the back-blowing air source nozzles are configured to provide gas for the filter cartridges, and the method includes:
In the embodiment of the application, the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe is measured by using a pressure difference controller, the pressure difference controller transmits the pressure difference to a programmable controller, and the programmable controller determines whether to clean the filter cartridge according to the range of the pressure difference.
And 102, judging whether the pressure difference is smaller than an abnormal threshold value, if so, executing the operation of the step 103, and if not, executing the operation of the step 104.
And 103, sequentially opening the diaphragm electromagnetic valves according to a preset first cleaning period, and controlling the back-blowing air source spray head to clean each filter cylinder through the opened diaphragm electromagnetic valves.
In the step, the diaphragm electromagnetic valves are opened, namely relays corresponding to the diaphragm electromagnetic valves are controlled to be electrified, each group of diaphragm electromagnetic valves are closed after being opened for a fixed time period, and the time intervals from the closing of the previous group of diaphragm electromagnetic valves to the opening of the next group of diaphragm electromagnetic valves are consistent.
The filter cartridge filtering is performed according to a preset first cleaning period, and the filter cartridge filtering is suitable for the condition that the pressure difference is lower than an abnormal threshold value, in this case, the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe is relatively low, that is, dust attached to the surface of the filter cartridge is relatively less, so that one group of diaphragm solenoid valves is opened every time, the filter cartridge corresponding to the group of diaphragm solenoid valves is cleaned, and other diaphragm solenoid valves which are not opened can work normally.
And 104, judging whether the pressure difference is greater than an alarm threshold value, and if the pressure difference is greater than the alarm threshold value, executing the operation of the step 105.
In this step, if the differential pressure is not greater than the alarm threshold, the operation of step 107 is performed.
And 105, judging whether the pressure difference is smaller than a limit threshold value, and if the pressure difference is smaller than the limit threshold value, executing the operation of 106.
In this step, if the differential pressure is not less than the limit threshold, the operation of step 107 is performed.
And 106, simultaneously opening the diaphragm electromagnetic valves according to a preset second cleaning period, and controlling the back-flushing air source spray head to clean each filter cartridge through the opened diaphragm electromagnetic valves.
And 107, opening the diaphragm electromagnetic valve corresponding to the manual operation according to the received manual operation, and controlling the back-blowing air source spray head to clean each filter cartridge through the opened diaphragm electromagnetic valve.
In the step, on one hand, the solenoid valves corresponding to the diaphragm solenoid valves are controlled to be powered off through manual operation so as to control the diaphragm solenoid valves to be opened and closed, on the other hand, the solenoid valves corresponding to the diaphragm solenoid valves are controlled to be powered off, and the programmable controller controls the opening and closing time of the diaphragm solenoid valves according to the received manual operation.
According to the method, under the condition that the pressure difference is smaller than the abnormal threshold value, diaphragm electromagnetic valves are sequentially opened according to a preset first cleaning period, and the opened diaphragm electromagnetic valves are used for controlling the back-blowing air source spray head to clean each filter cylinder. When the filter cartridge corresponding to the opened membrane electromagnetic valve is cleaned, the filter cartridges corresponding to other membrane electromagnetic valves which are not opened can normally filter the dust-containing air, so that the problem that the filtering of the dust-containing air must be stopped in the process of cleaning the filter cartridges in the prior art is solved, and the yield of the clean air is further improved.
Referring to a work flow chart shown in fig. 3, sequentially opening the diaphragm solenoid valves according to a preset first cleaning period, and controlling the blowback air source nozzles to clean the filter cartridges through the opened diaphragm solenoid valves includes:
The mode of cleaning the filter cartridge according to the preset first cleaning period is suitable for the situation with lower pressure difference, at this time, two situations may exist, one is that the amount of dust adsorbed on the surface of each filter cartridge is equivalent, but a certain amount of dust is accumulated on the surface of each filter cartridge, so that the pressure difference measured by the pressure difference controller is larger than an abnormal threshold value; in the other case, the filter cartridge with a larger amount of dust is cleaned, and the other filter cartridge with a smaller amount of dust is cleaned, so that the pressure difference is within the normal range.
In this step, the normal threshold value is a maximum value of a pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe in a state where the air filter can normally operate, and if the first pressure difference is smaller than the normal threshold value, it indicates that the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe is effectively reduced after one set of diaphragm solenoid valves performs one opening and closing operation, and it is not necessary to clean the filter cartridge corresponding to a subsequent diaphragm solenoid valve, and therefore, each set of diaphragm solenoid valves is closed, so that each filter cartridge of the air filter enters a normal operating state. And if the first pressure difference is not less than the normal threshold value, continuing to execute the opening and closing operation of the next group of diaphragm electromagnetic valves.
Referring to the work flow chart shown in fig. 4, the simultaneously opening the diaphragm solenoid valves according to the preset second cleaning period and controlling the blowback air source nozzles to clean each filter cartridge through the opened diaphragm solenoid valves includes:
and step 401, simultaneously opening each group of the diaphragm electromagnetic valves, and closing each group of the diaphragm electromagnetic valves after the diaphragm electromagnetic valves stay for a third preset time period.
And 402, acquiring a second pressure difference, and judging whether the second pressure difference is smaller than an alarm threshold value, wherein the second pressure difference is the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe after the step 401 is executed.
The mode of cleaning the filter cartridge according to the preset second cleaning period is suitable for the situation with larger pressure difference, at the moment, more dust is adsorbed on the surface of the filter cartridge corresponding to each group of the diaphragm solenoid valves, and therefore, each group of the diaphragm solenoid valves are simultaneously opened.
In this step, if the second pressure difference is smaller than the alarm threshold, it indicates that after each set of diaphragm solenoid valves simultaneously performs one opening and closing operation, the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe is effectively reduced, and at this time, the filter cartridge does not need to be continuously cleaned in a mode of cleaning the filter cartridge according to a preset second cleaning period, and only the filter cartridge needs to be cleaned according to the received manual operation. If the second pressure difference is not less than the alarm threshold value, the situation that more dust is still adsorbed on the surface of the filter cylinder is indicated, and therefore, all groups of diaphragm electromagnetic valves are opened again.
Referring to a work flow chart shown in fig. 5, the opening, according to the received manual operation, the diaphragm solenoid valve corresponding to the manual operation and controlling the blowback air source nozzle to clean each filter cartridge through the opened diaphragm solenoid valve includes:
In this step, the manual operation may control the opening and closing of each set of diaphragm solenoid valves, and thus, the fifth preset time period is controlled by the received manual operation.
The mode of cleaning the cartridge upon receipt of manual operation is applicable to two situations, the first being a pressure differential between an abnormal threshold and an alarm threshold, and the second being a pressure differential greater than a threshold limit. In the first case, the surface of the filter cartridge adsorbs relatively more dust, but in general, the air filter still can work normally, and the mode of cleaning the filter cartridge by received manual operation can filter the filter cartridge corresponding to each group of membrane solenoid valves under the condition of not influencing the normal dust-containing air filtration of the air filter. In the second case, the surface of the filter cartridge adsorbs more dust and the normal operation of the air filter is seriously affected, in this case, besides the cleaning of the filter cartridge, it is necessary to check whether there is a filter cartridge which cannot operate normally, and if so, it is necessary to replace the filter cartridge or a filter screen arranged on the filter cartridge in time.
And 502, acquiring a third pressure difference, and judging whether the third pressure difference meets a switching condition, wherein the third pressure difference is the pressure difference between the outside of the filter cylinder and the pipe orifice of the clean air outlet pipe after the diaphragm solenoid valve is closed.
When the pressure difference is greater than the threshold, a group of diaphragm solenoid valves may be selected at will for cleaning the filter cartridge during manual operation, and if the third pressure difference does not change significantly after the programmable controller receives the manual operation and performs one opening and closing operation, it indicates that a filter cartridge that may not work normally may exist in the filter cartridge corresponding to the group of diaphragm solenoid valves, or, when the operation of step 501 is re-performed, the group of diaphragm solenoid valves is still selected for cleaning the filter cartridge, and it is verified again whether the filter cartridge corresponding to the group of diaphragm solenoid valves can work normally.
In general, the diaphragm solenoid valve selected when the operation of step 501 is executed again is different from the diaphragm solenoid valve selected last time, so as to achieve the purpose of cleaning the filter cartridge quickly and effectively.
Referring to the schematic structural diagram shown in fig. 6, an embodiment of the present application provides a self-cleaning control device for an air filter, where the air filter is provided with multiple sets of diaphragm electromagnetic valves, each set of diaphragm electromagnetic valves controls multiple back-blowing air source nozzles, each back-blowing air source nozzle corresponds to a filter cartridge, and the back-blowing air source nozzles are configured to provide gas for the filter cartridges, and include:
an obtaining module 100 for obtaining a pressure difference between the outside of the filter cartridge and the clean air outlet pipe orifice;
a first judging module 200, configured to judge whether the pressure difference is smaller than an abnormal threshold, if the pressure difference is smaller than the abnormal threshold, perform an operation of a first cleaning module, and if the pressure difference is not smaller than the abnormal threshold, perform an operation of a second judging module;
the first cleaning module 300 is used for sequentially opening the diaphragm electromagnetic valves according to a preset first cleaning period, and controlling the back-blowing air source spray heads to clean the filter cartridges through the opened diaphragm electromagnetic valves;
a second judging module 400, configured to judge whether the pressure difference is greater than an alarm threshold, and if the pressure difference is greater than the alarm threshold, perform an operation of a third judging module;
a third determining module 500, configured to determine whether the pressure difference is smaller than a threshold, and if the pressure difference is smaller than the threshold, perform an operation of a second cleaning module;
and the second cleaning module 600 is configured to simultaneously open the diaphragm solenoid valves according to a preset second cleaning period, and control the blowback air source nozzles to clean the filter cartridges through the opened diaphragm solenoid valves.
Optionally, the apparatus further comprises:
a third cleaning module 700, configured to, if the second determining module determines that the pressure difference is between the abnormal threshold and the alarm threshold, open a diaphragm solenoid valve corresponding to the manual operation according to the received manual operation, and control the blowback air source nozzle to clean each filter cartridge through the opened diaphragm solenoid valve;
and/or the presence of a gas in the gas,
and a fourth cleaning module 800, configured to, if the third determining module determines that the pressure difference is not less than the limit threshold, open a diaphragm solenoid valve corresponding to the manual operation according to the received manual operation, and control the blowback air source nozzle to clean each filter cartridge through the opened diaphragm solenoid valve.
Optionally, the first cleaning module comprises:
the first diaphragm electromagnetic valve control unit is used for sequentially opening the diaphragm electromagnetic valves according to the sequence of the serial numbers from small to large, and closing the diaphragm electromagnetic valves after the diaphragm electromagnetic valves stay for a first preset time period, wherein the opening time interval of two adjacent diaphragm electromagnetic valves is a second preset time period, and the first cleaning period is the sum of the first preset time period and the second preset time period;
the first judgment unit is used for acquiring a first pressure difference after each group of diaphragm solenoid valves perform one opening and closing operation, and judging whether the first pressure difference is smaller than a normal threshold value, wherein the first pressure difference is the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe after each group of diaphragm solenoid valves perform one opening and closing operation;
and the determining unit is used for determining an execution result according to the judgment condition of the judging unit, wherein each group of the diaphragm electromagnetic valves is closed if the first pressure difference is smaller than a normal threshold value, and the operation of the diaphragm electromagnetic valve control unit is executed again if the first pressure difference is not smaller than the normal threshold value.
Optionally, the second cleaning module comprises:
the second diaphragm electromagnetic valve control unit is used for simultaneously opening each group of diaphragm electromagnetic valves and closing each group of diaphragm electromagnetic valves after staying for a third preset time period;
the second judgment unit is used for acquiring a second pressure difference and judging whether the second pressure difference is smaller than an alarm threshold value, wherein the second pressure difference is the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe after the second diaphragm electromagnetic valve control unit is executed;
and the first circulating unit is used for executing the operation of a third cleaning module if the second pressure difference is smaller than an alarm threshold value, and executing the operation of the second diaphragm electromagnetic valve control unit again after a fourth preset time interval if the second pressure difference is not smaller than the alarm threshold value, wherein the second cleaning period is the sum of the third preset time interval and the fourth preset time interval.
Optionally, the third cleaning module comprises:
the third diaphragm electromagnetic valve control unit is used for opening the diaphragm electromagnetic valves corresponding to the manual operation according to the received manual operation, each group of diaphragm electromagnetic valves stays for a fifth preset time period after being opened, and the diaphragm electromagnetic valves are closed after the staying time is over;
the third judgment unit is used for acquiring a third pressure difference and judging whether the third pressure difference meets a switching condition, wherein the third pressure difference is the pressure difference between the outside of the filter cylinder and the opening of the clean air outlet pipe after the diaphragm solenoid valve is closed;
the switching unit is used for switching a mode for cleaning the filter cylinders according to an interval where the third pressure difference is located if the third pressure difference meets a switching condition, wherein if the third pressure difference is smaller than an abnormal threshold value, diaphragm solenoid valves are sequentially opened according to a preset first cleaning period, the opened diaphragm solenoid valves are used for controlling the back-blowing air source nozzles to clean the filter cylinders, and if the third pressure difference is between a limit threshold value and an alarm threshold value, the diaphragm solenoid valves are simultaneously opened according to a preset second cleaning period, and the opened diaphragm solenoid valves are used for controlling the back-blowing air source nozzles to clean the filter cylinders; and if the third pressure difference does not meet the switching condition, after a sixth preset time interval, the operation of the third diaphragm electromagnetic valve control unit is executed again.
Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.
The same and similar parts in the various embodiments in this specification may be referred to each other. In particular, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is simple, and the relevant points can be referred to the description in the method embodiment.
The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.
Claims (10)
1. A self-cleaning control method of an air filter, wherein the air filter is provided with a plurality of groups of diaphragm electromagnetic valves, each group of diaphragm electromagnetic valves controls a plurality of back-blowing air source nozzles, each back-blowing air source nozzle corresponds to a filter cylinder, and the back-blowing air source nozzles are used for providing gas for the filter cylinders, and the self-cleaning control method of the air filter is characterized by comprising the following steps:
step 101, acquiring a pressure difference between the outside of the filter cartridge and a pipe orifice of a clean air outlet pipe;
step 102, judging whether the pressure difference is smaller than an abnormal threshold, if so, executing the operation of step 103, and if not, executing the operation of step 104;
103, sequentially opening diaphragm electromagnetic valves according to a preset first cleaning period, and controlling a back-flushing air source spray head to clean each filter cartridge through the opened diaphragm electromagnetic valves;
step 104, judging whether the pressure difference is greater than an alarm threshold value, and if the pressure difference is greater than the alarm threshold value, executing the operation of step 105;
step 105, judging whether the pressure difference is smaller than a limit threshold value, and if the pressure difference is smaller than the limit threshold value, executing the operation of step 106;
and 106, simultaneously opening the diaphragm electromagnetic valves according to a preset second cleaning period, and controlling the back-flushing air source spray head to clean each filter cartridge through the opened diaphragm electromagnetic valves.
2. The method of claim 1,
if the pressure difference is determined to be between the abnormal threshold value and the alarm threshold value through the judgment of the step 104, opening a diaphragm electromagnetic valve corresponding to the manual operation according to the received manual operation, and controlling a back-flushing air source spray head to clean each filter cartridge through the opened diaphragm electromagnetic valve;
and/or the presence of a gas in the gas,
and if the pressure difference is determined to be not less than the limit threshold value through the judgment of the step 105, opening a diaphragm electromagnetic valve corresponding to the manual operation according to the received manual operation, and controlling a back-flushing air source spray head to clean each filter cartridge through the opened diaphragm electromagnetic valve.
3. The method of claim 1, wherein sequentially opening the diaphragm solenoid valves and controlling the blowback air source nozzles to clean each filter cartridge through the opened diaphragm solenoid valves according to a preset first cleaning period comprises:
step 301, sequentially opening diaphragm electromagnetic valves according to the sequence of numbers from small to large, and closing the diaphragm electromagnetic valves after the diaphragm electromagnetic valves stay for a first preset time period, wherein the opening time interval of two adjacent diaphragm electromagnetic valves is a second preset time period, and the first cleaning cycle is the sum of the first preset time period and the second preset time period;
step 302, after each group of diaphragm solenoid valves perform one opening and closing operation, acquiring a first pressure difference, and judging whether the first pressure difference is smaller than a normal threshold value, wherein the first pressure difference is the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe after each group of diaphragm solenoid valves perform one opening and closing operation;
step 303, determining an execution result according to the judgment condition in the step 302, wherein if the first pressure difference is smaller than a normal threshold, each group of the diaphragm solenoid valves is closed, and if the first pressure difference is not smaller than the normal threshold, the operation in the step 301 is executed again.
4. The method of claim 1, wherein simultaneously opening the diaphragm solenoid valve and controlling the blowback air source nozzle to clean each filter cartridge through the opened diaphragm solenoid valve according to the preset second cleaning period comprises:
step 401, simultaneously opening each group of the diaphragm electromagnetic valves, and closing each group of the diaphragm electromagnetic valves after the diaphragm electromagnetic valves stay for a third preset time period;
step 402, obtaining a second pressure difference, and judging whether the second pressure difference is smaller than an alarm threshold value, wherein the second pressure difference is the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe after the step 401 is executed;
step 403, if the second pressure difference is smaller than the alarm threshold, according to the received manual operation, opening a diaphragm solenoid valve corresponding to the manual operation, and controlling a blowback air source nozzle to clean each filter cartridge through the opened diaphragm solenoid valve, and if the second pressure difference is not smaller than the alarm threshold, after a fourth preset time period, re-executing the operation of the step 401, where the second cleaning cycle is the sum of the third preset time period and the fourth preset time period.
5. The method according to claim 2 or 4, wherein the step of opening the corresponding diaphragm solenoid valve of the manual operation according to the received manual operation and controlling the blowback air source spray head to clean each filter cartridge through the opened diaphragm solenoid valve comprises the following steps:
step 501, according to received manual operation, membrane electromagnetic valves corresponding to the manual operation are opened, each group of membrane electromagnetic valves stays for a fifth preset time period after being opened, and the membrane electromagnetic valves are closed after the stay time is over;
step 502, obtaining a third pressure difference, and judging whether the third pressure difference meets a switching condition, wherein the third pressure difference is the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe after the diaphragm solenoid valve is closed;
step 503, if the third pressure difference meets a switching condition, switching a mode for cleaning the filter cartridges according to an interval where the third pressure difference is located, wherein if the third pressure difference is smaller than an abnormal threshold, sequentially opening the diaphragm solenoid valves according to a preset first cleaning period, and controlling the back-flushing air source spray head to clean each filter cartridge through the opened diaphragm solenoid valves, and if the third pressure difference is between a limit threshold and an alarm threshold, simultaneously opening the diaphragm solenoid valves according to a preset second cleaning period, and controlling the back-flushing air source spray head to clean each filter cartridge through the opened diaphragm solenoid valves; if the third pressure difference does not meet the switching condition, after a sixth preset time interval, the operation of step 501 is executed again.
6. The utility model provides a self-cleaning controlling means of air cleaner, air cleaner is provided with multiunit diaphragm solenoid valve, and every group the diaphragm solenoid valve control a plurality of blowback air supply shower nozzles, every blowback air supply shower nozzle corresponds a section of thick bamboo that strains, blowback air supply shower nozzle is used for it provides gas to strain a section of thick bamboo, its characterized in that includes:
the acquisition module is used for acquiring the pressure difference between the outside of the filter cylinder and the pipe orifice of the clean air outlet pipe;
the first judgment module is used for judging whether the pressure difference is smaller than an abnormal threshold value or not, if the pressure difference is smaller than the abnormal threshold value, the operation of the first cleaning module is executed, and if the pressure difference is not smaller than the abnormal threshold value, the operation of the second judgment module is executed;
the first cleaning module is used for sequentially opening the diaphragm electromagnetic valves according to a preset first cleaning period and controlling the back-blowing air source spray heads to clean the filter cartridges through the opened diaphragm electromagnetic valves;
the second judgment module is used for judging whether the pressure difference is greater than an alarm threshold value or not, and if the pressure difference is greater than the alarm threshold value, the operation of the third judgment module is executed;
the third judgment module is used for judging whether the pressure difference is smaller than a limit threshold value or not, and if the pressure difference is smaller than the limit threshold value, the operation of the second cleaning module is executed;
and the second cleaning module is used for simultaneously opening the diaphragm electromagnetic valves according to a preset second cleaning period and controlling the back-blowing air source spray heads to clean the filter cartridges through the opened diaphragm electromagnetic valves.
7. The apparatus of claim 6, further comprising:
the third cleaning module is used for opening the diaphragm electromagnetic valve corresponding to the manual operation according to the received manual operation if the second judging module determines that the pressure difference is between the abnormal threshold and the alarm threshold, and controlling the back-flushing air source spray head to clean each filter cylinder through the opened diaphragm electromagnetic valve;
and/or
And the fourth cleaning module is used for opening the diaphragm electromagnetic valve corresponding to the manual operation according to the received manual operation if the third judgment module determines that the pressure difference is not less than the limit threshold, and controlling the back-flushing air source spray head to clean each filter cylinder through the opened diaphragm electromagnetic valve.
8. The apparatus of claim 6, wherein the first cleaning module comprises:
the first diaphragm electromagnetic valve control unit is used for sequentially opening the diaphragm electromagnetic valves according to the sequence of the serial numbers from small to large, and closing the diaphragm electromagnetic valves after the diaphragm electromagnetic valves stay for a first preset time period, wherein the opening time interval of two adjacent diaphragm electromagnetic valves is a second preset time period, and the first cleaning period is the sum of the first preset time period and the second preset time period;
the first judgment unit is used for acquiring a first pressure difference after each group of diaphragm solenoid valves perform one opening and closing operation, and judging whether the first pressure difference is smaller than a normal threshold value, wherein the first pressure difference is the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe after each group of diaphragm solenoid valves perform one opening and closing operation;
and the determining unit is used for determining an execution result according to the judgment condition of the judging unit, wherein each group of the diaphragm electromagnetic valves is closed if the first pressure difference is smaller than a normal threshold value, and the operation of the diaphragm electromagnetic valve control unit is executed again if the first pressure difference is not smaller than the normal threshold value.
9. The apparatus of claim 6, wherein the second cleaning module comprises:
the second diaphragm electromagnetic valve control unit is used for simultaneously opening each group of diaphragm electromagnetic valves and closing each group of diaphragm electromagnetic valves after staying for a third preset time period;
the second judgment unit is used for acquiring a second pressure difference and judging whether the second pressure difference is smaller than an alarm threshold value, wherein the second pressure difference is the pressure difference between the outside of the filter cartridge and the pipe orifice of the clean air outlet pipe after the second diaphragm electromagnetic valve control unit is executed;
and the first circulating unit is used for executing the operation of a third cleaning module if the second pressure difference is smaller than an alarm threshold value, and executing the operation of the second diaphragm electromagnetic valve control unit again after a fourth preset time interval if the second pressure difference is not smaller than the alarm threshold value, wherein the second cleaning period is the sum of the third preset time interval and the fourth preset time interval.
10. The apparatus of claim 7 or 9, wherein the third cleaning module comprises:
the third diaphragm electromagnetic valve control unit is used for opening the diaphragm electromagnetic valves corresponding to the manual operation according to the received manual operation, each group of diaphragm electromagnetic valves stays for a fifth preset time period after being opened, and the diaphragm electromagnetic valves are closed after the staying time is over;
the third judgment unit is used for acquiring a third pressure difference and judging whether the third pressure difference meets a switching condition, wherein the third pressure difference is the pressure difference between the outside of the filter cylinder and the opening of the clean air outlet pipe after the diaphragm solenoid valve is closed;
the switching unit is used for switching a mode for cleaning the filter cylinders according to an interval where the third pressure difference is located if the third pressure difference meets a switching condition, wherein if the third pressure difference is smaller than an abnormal threshold value, diaphragm solenoid valves are sequentially opened according to a preset first cleaning period, the opened diaphragm solenoid valves are used for controlling the back-blowing air source nozzles to clean the filter cylinders, and if the third pressure difference is between a limit threshold value and an alarm threshold value, the diaphragm solenoid valves are simultaneously opened according to a preset second cleaning period, and the opened diaphragm solenoid valves are used for controlling the back-blowing air source nozzles to clean the filter cylinders; and if the third pressure difference does not meet the switching condition, after a sixth preset time interval, the operation of the third diaphragm electromagnetic valve control unit is executed again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113480.7A CN110935249A (en) | 2018-09-25 | 2018-09-25 | Self-cleaning control method and device for air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113480.7A CN110935249A (en) | 2018-09-25 | 2018-09-25 | Self-cleaning control method and device for air filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110935249A true CN110935249A (en) | 2020-03-31 |
Family
ID=69905627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811113480.7A Pending CN110935249A (en) | 2018-09-25 | 2018-09-25 | Self-cleaning control method and device for air filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110935249A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111905488A (en) * | 2020-08-04 | 2020-11-10 | 中国科学院广州能源研究所 | Cloth bag dust removal device and control method |
| CN112957828A (en) * | 2021-01-29 | 2021-06-15 | 华为技术有限公司 | Filter screen cleaning system, filter screen cleaning method and data center |
| CN114198833A (en) * | 2021-11-17 | 2022-03-18 | 青岛海尔空调电子有限公司 | Method and device for controlling a humidifier, humidifier and storage medium |
| CN114534383A (en) * | 2022-03-25 | 2022-05-27 | 无锡红旗除尘设备有限公司 | Pulse blowing control method |
| CN115508308A (en) * | 2022-10-10 | 2022-12-23 | 黄海造船有限公司 | Anti-interference high-precision ammonia gas leakage detection device |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004016915A1 (en) * | 2002-08-12 | 2004-02-26 | Bosch Automotive Systems Corporation | Exhaust gas cleaner |
| US20060196167A1 (en) * | 2005-03-07 | 2006-09-07 | Honda Motor Co., Ltd. | Exhaust gas purifying apparatus for internal combustion engine |
| JP2007245019A (en) * | 2006-03-16 | 2007-09-27 | Hitachi Koki Co Ltd | Dust collector |
| CN201596509U (en) * | 2006-03-29 | 2010-10-06 | 因弗因斯医药瑞士股份有限公司 | Analysis device |
| CN102309897A (en) * | 2011-09-28 | 2012-01-11 | 曙光信息产业(北京)有限公司 | Dedusting method and system |
| CN202113719U (en) * | 2011-05-30 | 2012-01-18 | 深圳市行健自动化***有限公司 | Self-cleaning system of gas filter |
| CN103282095A (en) * | 2010-08-05 | 2013-09-04 | 普特罗尼克国际私人有限公司 | Dust collector control system |
| CN103480211A (en) * | 2013-10-14 | 2014-01-01 | 南京钢铁股份有限公司 | Multi-mode cleaning reverse-blowing process of powder collecting system of blast furnace pulverizing cloth bag |
| CN104548796A (en) * | 2013-10-12 | 2015-04-29 | 湖北浠水蓝天联合气体有限公司 | Self-cleaning air filter |
| CN104771966A (en) * | 2015-01-29 | 2015-07-15 | 徐州徐工筑路机械有限公司 | Cylinder bag deduster blowback ash removal control apparatus and method thereof |
| CN205516927U (en) * | 2016-04-13 | 2016-08-31 | 山东新华联新能源科技有限公司 | Dust removal system |
| CN105964070A (en) * | 2016-06-27 | 2016-09-28 | 江苏盛伟过滤设备有限公司 | Reverse-blowing detection device for self-cleaning type filter element and fan |
| CN107376525A (en) * | 2017-06-29 | 2017-11-24 | 珠海格力电器股份有限公司 | Air filter and cleaning control method and device thereof |
| KR102021551B1 (en) * | 2017-12-29 | 2019-11-04 | 케이씨코트렐 주식회사 | Bag filter pulse control system |
-
2018
- 2018-09-25 CN CN201811113480.7A patent/CN110935249A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004016915A1 (en) * | 2002-08-12 | 2004-02-26 | Bosch Automotive Systems Corporation | Exhaust gas cleaner |
| US20060196167A1 (en) * | 2005-03-07 | 2006-09-07 | Honda Motor Co., Ltd. | Exhaust gas purifying apparatus for internal combustion engine |
| JP2007245019A (en) * | 2006-03-16 | 2007-09-27 | Hitachi Koki Co Ltd | Dust collector |
| CN201596509U (en) * | 2006-03-29 | 2010-10-06 | 因弗因斯医药瑞士股份有限公司 | Analysis device |
| CN103282095A (en) * | 2010-08-05 | 2013-09-04 | 普特罗尼克国际私人有限公司 | Dust collector control system |
| CN202113719U (en) * | 2011-05-30 | 2012-01-18 | 深圳市行健自动化***有限公司 | Self-cleaning system of gas filter |
| CN102309897A (en) * | 2011-09-28 | 2012-01-11 | 曙光信息产业(北京)有限公司 | Dedusting method and system |
| CN104548796A (en) * | 2013-10-12 | 2015-04-29 | 湖北浠水蓝天联合气体有限公司 | Self-cleaning air filter |
| CN103480211A (en) * | 2013-10-14 | 2014-01-01 | 南京钢铁股份有限公司 | Multi-mode cleaning reverse-blowing process of powder collecting system of blast furnace pulverizing cloth bag |
| CN104771966A (en) * | 2015-01-29 | 2015-07-15 | 徐州徐工筑路机械有限公司 | Cylinder bag deduster blowback ash removal control apparatus and method thereof |
| CN205516927U (en) * | 2016-04-13 | 2016-08-31 | 山东新华联新能源科技有限公司 | Dust removal system |
| CN105964070A (en) * | 2016-06-27 | 2016-09-28 | 江苏盛伟过滤设备有限公司 | Reverse-blowing detection device for self-cleaning type filter element and fan |
| CN107376525A (en) * | 2017-06-29 | 2017-11-24 | 珠海格力电器股份有限公司 | Air filter and cleaning control method and device thereof |
| KR102021551B1 (en) * | 2017-12-29 | 2019-11-04 | 케이씨코트렐 주식회사 | Bag filter pulse control system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111905488A (en) * | 2020-08-04 | 2020-11-10 | 中国科学院广州能源研究所 | Cloth bag dust removal device and control method |
| CN112957828A (en) * | 2021-01-29 | 2021-06-15 | 华为技术有限公司 | Filter screen cleaning system, filter screen cleaning method and data center |
| CN114198833A (en) * | 2021-11-17 | 2022-03-18 | 青岛海尔空调电子有限公司 | Method and device for controlling a humidifier, humidifier and storage medium |
| CN114198833B (en) * | 2021-11-17 | 2023-08-15 | 青岛海尔空调电子有限公司 | Method and device for controlling humidifier, humidifier and storage medium |
| CN114534383A (en) * | 2022-03-25 | 2022-05-27 | 无锡红旗除尘设备有限公司 | Pulse blowing control method |
| CN115508308A (en) * | 2022-10-10 | 2022-12-23 | 黄海造船有限公司 | Anti-interference high-precision ammonia gas leakage detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110935249A (en) | Self-cleaning control method and device for air filter | |
| CN204034573U (en) | A kind of multifunctional reverse osmosis membrane cleans testing integrated machine | |
| JP6359688B2 (en) | Monitoring pressurized gas-based cleaning processes in hose filter equipment | |
| WO2009097656A1 (en) | Dust collector control system | |
| KR102139147B1 (en) | Filtration and dust collector monitoring system | |
| EP2756218A2 (en) | Improved method for the automated discharge of condensate from a pressurized gas system | |
| CN202876512U (en) | Circulating device of cleaning filter | |
| US20140123853A1 (en) | Offline water wash system for inlet filters and filter house | |
| CN110013713A (en) | Air purifier strainer service life judgment method and air purifier | |
| CN207478120U (en) | Changeable operation and the filter device of automatic back-washing | |
| CN106310755B (en) | Acid regeneration system, cleaning system, acid regeneration method and cleaning method thereof | |
| CN111188383A (en) | Stable filtering centralized water supply system and centralized water supply method | |
| KR200475293Y1 (en) | filter type sample pretreatment system using high pressure air | |
| KR102139146B1 (en) | Filter dust collector and Control method of bag filter pulsing of filter dust collector | |
| CN202237514U (en) | Wellhead backwashing on-line filter | |
| EP3071815B1 (en) | Systems and methods for managing turbine intake filters | |
| CN102989711A (en) | Impurity collecting device for oil sprayer | |
| CN107670373A (en) | Changeable operation and the filter and control method of automatic back-washing | |
| CN217724979U (en) | Air compressor filter blowback controlling means | |
| CN114459840A (en) | Intelligent diagnosis and protection system for gas sampling system and diagnosis and protection method thereof | |
| CN202682879U (en) | Full-automatic dual-net backwash filter for agricultural water-saving irrigation system | |
| CN205398176U (en) | Combination of intelligence purifier | |
| CN202322521U (en) | Water purifier | |
| CN204815874U (en) | Automatic back-flushing filtering system for residual oil | |
| CN110955201B (en) | System for automatic detection operation of soft water supply system and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200331 |
|
| RJ01 | Rejection of invention patent application after publication |