TWI790847B - Dust collection system having a function of addressing deteriorated filter bag and positioning method for deteriorated filter bag thereof - Google Patents

Abstract

A dust collection system having a function of addressing deteriorated filter bag and an addressing method for deteriorated filter bag thereof are disclosed. The dust collection system controls multiple pattern combinations of multiple blowpipes to blow toward multiple filter bags in sequence based on a blowing pattern, and acquires an after-purifying pollution value corresponding to each combination through a dust monitoring meter arranged at a purification-end. The dust collection system determines one blowpipe facing a deteriorated filter bag from the corresponding combination when a deteriorated condition is met, and issues an alarm of deteriorated filter bag. The disclosure may address the deteriorated filter bag without stopping collecting dust.

Description

Dust collection system with addressing function for degraded filter bags and addressing method for degraded filter bags

The present invention is related to a dust collection system, in particular to a dust collection system with a function of addressing a deteriorated filter bag and a method for addressing a deteriorated filter bag.

The bag dust collection system is to make the polluted air pass through multiple filter bags to filter the dust in the air, so as to discharge the purified air.

When the filter bag is damaged or deteriorated (for example, the pores become larger), the filtering capacity of the filter bag will be greatly reduced, and the dust content of the purified air will exceed the allowable range. The above situation not only causes air pollution, but also can make the factory fined for violating environmental protection regulations.

In order to avoid the above situation, the factory must regularly send personnel to check all filter bags to find damaged or deteriorated filter bags and replace them.

The above-mentioned inspection must consume a lot of manpower and time, and requires the factory to stop working during the inspection. Moreover, when the number of filter bags is more, the above inspection will consume more manpower and time.

Additionally, while direct replacement of all filter bags reduces inspection time, it significantly increases the cost of the filter bags.

Therefore, the existing bag-type dust collection system has the above-mentioned problems, and a more effective solution is urgently needed to be proposed.

The main purpose of the present invention is to provide a dust collection system with the function of addressing the deteriorated filter bag and its addressing method for the deteriorated filter bag, which can automatically address the deteriorated filter bag through the air washing action.

In one embodiment, a dust collection system with a function of addressing a deteriorated filter bag includes an air injection device, a dust concentration meter at a purification end, and a control device electrically connected to the air injection device and the dust concentration meter at the purification end. The air injection device includes a plurality of air injection pipes, and the air injection device is used to inject air through the plurality of air injection pipes towards the plurality of filter bags to blow off the pollutants attached to the plurality of filter bags. The dust concentration meter at the cleaning end is arranged on a cleaning side of the plurality of filter bags for sensing a pollution value after cleaning. The control device is set to control multiple types of combinations of the plurality of air injection pipes to perform air injection based on an air injection rule, and obtain the post-purification pollution value after each type combination of air injection. The control device is set to determine the jet pipe facing a deteriorated filter bag in the corresponding type combination when the pollution value after purification reaches a deterioration condition, and issue a filter bag deterioration reminder to the jet pipe.

In one embodiment, a method for addressing a degraded filter bag of a dust collection system includes: a) sequentially controlling a combination of multiple types of multiple air injection pipes of an air injection device based on an air injection law to spray air toward multiple filter bags , to blow off the pollutants attached to the plurality of filter bags; b) obtain a post-purification pollution value after each type of combined air injection through a purification end dust concentration meter arranged on a purification side of the plurality of filter bags and, c) when any of the post-purification pollution values meet a deterioration condition, determine the air injection pipe facing a deteriorated filter bag in the corresponding type combination, and issue a filter bag deterioration reminder to the air injection pipe.

The invention can automatically address the deteriorated filter bag without stopping the dust collecting action.

1: Dust collection system

10: Control device

100: Sequential control board

101: Extended Edition

11: Jet device

110: jet pipe

111: air valve

112: Air supply device

12: Purification end dust concentration meter

13: Dust concentration meter at the pollution end

14: storage device

140: jet law

141: Deterioration condition

142: Computer program

20: filter bag

30: air inlet

31: air chamber

32: Air outlet

33: Solenoid valve

34: Diaphragm valve

35: Dust collecting tank

40: air inlet

41: air chamber

42: Air outlet

43: Dust concentration meter at the pollution end

44: Purification end dust concentration meter

45: Dust collecting tank

46: Feed port

47: filter bag

50: Gas supply supervisor

51: air valve

52: Air supply branch pipe

0: jet pipe

Port 1-Port 8: Jet pipe

A1-A4, B1-B4, C1-C4, D1-D4: jet pipe

t1-t8: time

S10-S15: Deterioration filter bag detection steps

S20-S24: addressing steps

S30-S32: Deterioration Judgment Steps

FIG. 1 is a structural diagram of a dust collection system according to an embodiment of the present invention.

Fig. 2 is a structural diagram of a dust collection system according to an embodiment of the present invention.

Fig. 3 is a working diagram of the dust collection system according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of the appearance of a dust collecting system according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of an air injection pattern according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of a modified air injection pattern according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of a modified air injection pattern according to an embodiment of the present invention.

Fig. 8 is a schematic diagram of an air injection pattern according to an embodiment of the present invention.

Fig. 9 is a schematic diagram of an air injection pattern according to an embodiment of the present invention.

Fig. 10 is a graph showing the relationship between air injection control and pollution value according to an embodiment of the present invention.

FIG. 11 is a schematic diagram of a trigger schedule according to an embodiment of the present invention.

Fig. 12 is a schematic diagram of an air injection pattern according to an embodiment of the present invention.

Fig. 13 is a schematic diagram of a modified air injection pattern according to an embodiment of the present invention.

Fig. 14 is a schematic diagram of an air injection pattern according to an embodiment of the present invention.

Fig. 15 is a schematic diagram of an air injection pattern according to an embodiment of the present invention.

Fig. 16 is a flowchart of a method for addressing a degraded filter bag according to an embodiment of the present invention.

Fig. 17 is a partial flowchart of a method for addressing a deteriorated filter bag according to an embodiment of the present invention.

Fig. 18 is a partial flowchart of a method for addressing a deteriorated filter bag according to an embodiment of the present invention.

A preferred embodiment of the present invention will be described in detail below with reference to the drawings.

The present invention mainly proposes a dust collection system with the function of addressing the deteriorated filter bag and its addressing method for the deteriorated filter bag, which is to detect whether there is a deteriorated filter bag through the dust concentration meter at the purification end installed on the purification side, and through different types Combined air washing action to address the deteriorated filter bag and necessary air jet isolation to avoid further degradation of the filter bag.

Furthermore, the present invention can correctly address the degraded filter bag and issue a filter bag deterioration reminder by combining different types of air injection and checking the post-purification pollution value measured by the dust concentration meter at the purification end.

In addition, if the location of the deteriorated filter bag is completed but cannot be replaced in time, the present invention can set the air injection pipe corresponding to the deteriorated filter bag to an isolated state (no air injection) to avoid contamination of the purification end.

In one embodiment, the aforementioned air washing action may be a reverse air washing action (backwashing action). The backwash action is to install an air injection pipe on the purification side of each filter bag (such as the inside of the filter bag), and spray clean high-pressure gas to the filter bag through the air injection pipe. In this way, the jetted high-pressure gas can pass through the filter bag and blow off the pollutants (such as dust) attached to the polluted side (such as the outside) of the filter bag, thereby restoring the filtering ability of the filter bag.

In one embodiment, the aforementioned air washing action may be a forward air washing action (positive washing action). The positive washing action is to install an air jet pipe on the polluted side of each filter bag (such as the outside of the filter bag), and spray clean high-pressure gas to the filter bag through the air jet pipe to directly blow off the pollutants attached to the polluted side of the filter bag, and restore The filter capacity of the filter bag.

It is worth mentioning that when the filter bag is damaged or deteriorated, the aforementioned air washing action will cause a large amount of pollutants to flow into the purification side, which will greatly increase the pollution value on the purification side.

The present invention can determine whether the filter bags at each position are damaged or deteriorated and restore the filtering capacity of the filter bags by performing the above-mentioned backwashing action on the filter bags at each position and monitoring the pollution value on the purification side.

Please refer to FIG. 1 . FIG. 1 is a structure diagram of a dust collection system according to an embodiment of the present invention. The dust collection system 1 of the present invention mainly includes an air injection device 11 , a dust concentration meter 12 at the purification end, and a control device 10 electrically connected to the above devices.

The air injection device 11 may include a plurality of air injection pipes 110 . The air injection device 11 can deliver compressed air to the air injection pipe 110 to make the air injection pipe 110 spray air toward the filter bag 20 to blow off the pollutants attached to the corresponding filter bag 20 .

The aforementioned plurality of jet pipes 110 can be respectively arranged on the purifying side of the plurality of filter bags 20 , and face the bag body of each corresponding filter bag 20 to realize the above-mentioned backwashing action, but not limited thereto.

The clean end dust concentration meter 12 is set on the clean side of the filter bag 20 and is used to sense the pollution value after the polluted air passes through the filter bag 20 after purification.

In one embodiment, the dust concentration meter 12 at the purification end can be a light absorption dust meter, a light scattering dust meter, a β-ray dust meter, an electrostatic induction dust meter, a triboelectricity principle (Triboelectricity) or other types of dust meters. The dust concentration meter 12 at the purification end can sense the ambient air to obtain an induced current signal (unit can be mA), and convert the induced current signal into the aforementioned pollution value after purification (such as dust concentration, the unit can be mg/m3).

The control device 10 can be, for example, a computer device such as a personal computer, an industrial computer, or a control circuit board. Moreover, the control device 10 may include a programmable controller, such as a CPU, a microprocessor, a SoC, an FPGA, and the like.

The control device 10 can be configured to obtain a pre-set air blowing pattern 140 (blowing pattern), and control multiple combinations of multiple types of the multiple air blowing pipes 110 to blow air based on the obtained air blowing pattern 140 . After each type of combined air injection is completed, the control device 10 obtains the post-purification pollution value of each type of combined air injection through the purification sensor.

The control device 10 can also be set to determine the air injection towards the degraded filter bag in one or more air injection pipes 110 covered by the corresponding type combination when the pollution value after purification of any type combination meets the preset deterioration condition pipe 110, and send a reminder of filter bag deterioration to the jet pipe 110 (such as sending text notifications through the network, sound notifications through sirens, light notifications through indicator lights, or image notifications through monitors) to notify the administrator of the jet pipe The filter bag corresponding to 110 is cracked or damaged.

Thereby, the dust collection system 1 of the present invention can realize the detection and addressing of the filter bag deterioration during the air washing process of the filter bag 20 .

In an embodiment, the above-mentioned air injection rule 140 can be used to divide the air injection pipes 110 into different multiple types of combinations (grouping), and each type combination includes a plurality of air injection pipes 110 that are not repeated or partially repeated. The aforementioned air injection rule 140 can define the injection timing of multiple types of combinations, for example, define the injection sequence, injection time, and injection interval of multiple types of combinations.

For example, the control device 10 can select type combination 1 to perform air injection based on the air injection sequence, control the selected type combination to perform air injection based on the injection time, and wait for the injection interval after the injection is completed to obtain the purification pollution of type combination 1 value. Then, the control device 10 can select the type combination 2 to perform air injection based on the air injection sequence, control the selected type combination to perform air injection based on the injection time, and wait for the injection interval after the air injection is completed to obtain the purification pollution value of the type combination 2, and so on.

In one embodiment, at least one type combination includes a plurality of air injection tubes 110 , and at least one type combination only includes a single air injection tube 110 .

See Figures 5 through 7. Fig. 5 is a schematic diagram of an air injection pattern according to an embodiment of the present invention. Fig. 6 is a schematic diagram of a modified air injection pattern according to an embodiment of the present invention. Fig. 7 is a schematic diagram of a modified air injection pattern according to an embodiment of the present invention.

In this embodiment, the dust collection system 1 includes 10 air injection pipes 110 , namely Port 1 to Port 10 .

As shown in FIG. 5(I), the control device 10 can simultaneously control all Port 1 to Port 10 to inject air simultaneously.

As shown in FIG. 5(II), Port 1 to Port 10 are divided into two type combinations. Port 1, Port 3, Port 5, Port 7 and Port 9 are the combination of the first type. Port 2, Port 4, Port 6, Port 8, and Port 10 are the second type combination. The control device 10 can control the combination of the first type and the second group and alternate air injection (air injection law 140 ).

As shown in FIG. 5(III), Port 1 to Port 10 are divided into three type combinations. Port 1, Port 4, Port 7 and Port 10 are the combination of the first type. Port 2, Port 5 and Port 8 are the combination of the second type. Port 3, Port 6 and Port 9 are the third type combination. The control device 10 can control the combination of the first type, the combination of the second type and the third group and alternately inject air (injection law 140 ).

Moreover, when it is detected that the purification pollution value exceeds the standard after the second type of combined air injection, it can be determined that the filter bag 20 corresponding to at least one of Port 2, Port 5 and Port 8 has deteriorated.

Then, through the degraded filter bag addressing method described later, it can be determined that the filter bag 20 corresponding to Port 8 is degraded.

As shown in Figure 6, after identifying the deterioration of the filter bag 20 corresponding to Port 8, each time the air injection of the second type combination is performed, the dust collection system 1 can modify the air injection law 140 so that Port 8 does not inject air (isolated state ), until a new filter bag 20 is replaced.

As shown in FIG. 7 , after identifying the deterioration of the filter bag 20 corresponding to Port 8, the dust collection system 1 can modify the air injection pattern 140 to make Port 7 replace Port 8 for air injection each time the air injection of the second type combination is performed. , until a new filter bag 20 is replaced.

In this way, the present invention can avoid performing air washing on the degraded filter bag, which will cause the pollution value after purification to exceed the standard.

Please refer to FIG. 2 . FIG. 2 is a structure diagram of a dust collection system according to an embodiment of the present invention.

In this embodiment, the air injection device 11 may include an air supply device 112 and a plurality of air valves 111 .

The gas supply device 112 is used as a high-pressure gas source for providing high-pressure gas to the gas pipeline, so as to deliver the high-pressure gas to the gas valve 111 through the gas pipeline. The air supply device 112 may include a high-pressure air blower or a compressed air tank, but is not limited thereto.

A plurality of gas valves 111 (such as solenoid valves) are respectively provided in the gas supply pipelines leading from the gas supply device 112 to the gas injection pipe 110 . A plurality of gas valves 111 are used to control the amount of high-pressure gas flowing to each gas injection pipe 110 .

For example, when the gas valve 111 is closed, the high-pressure gas can be blocked from flowing to the corresponding gas injection pipe 111 . When the gas valve 111 is opened by 50%, 50% of the maximum instantaneous amount of high-pressure gas can be introduced into the gas injection pipe 110 . When the gas valve 111 is fully opened (100%), 100% of the maximum instantaneous amount of high-pressure gas can be introduced into the gas injection pipe 110 .

In one embodiment, the control device 10 may include a sequence control board 100 . The sequence control board 100 is a circuit control board, electrically connected to the air supply device 112 and a plurality of air valves 111 . The sequence control board 100 may control the opening/closing states of the plurality of air valves 111 based on the air injection law 140 .

In one embodiment, the sequence control board 100 can be, for example, the AEX programmable sequence controller of Handa Technology Co., Ltd., but it is not limited thereto.

In one embodiment, when the number of air valves 111 is too large to connect all the air valves 111 through a single sequence control board 100 , the control device 10 may further include one or more expansion boards 101 .

Each expansion board 101 is electrically connected to the sequence control board 100 and serves as an expansion interface of the sequence control board 100 .

Specifically, each expansion board 101 can be used to electrically connect a part of the gas valve 111 . Moreover, the sequence control board 100 can be electrically connected to another part of the plurality of air valves 111 .

After the setting is completed, the sequence control board 100 can directly control the opening/closing of the multiple air valves 111 connected, and can control the opening/closing of the multiple air valves 111 connected to each expansion board 101 through each expansion board 101 . Thereby, the present invention can solve the problem of insufficient connection interface of the sequence control board 100 .

In one embodiment, the sequence control board 100 and each expansion board 101 may include a display or an indicator light, and the aforementioned display or indicator light may be used to indicate the status of the connected air valves 11 .

In one embodiment, the dust collection system 1 may include a storage device 14 electrically connected to the control device 10 . The storage device 14 can be used to store data (such as the gas injection rule 140 and/or the degradation condition 141 ), and can include storage media such as ROM, EEPROM, RAM, or flash memory.

In one embodiment, the storage device 14 may be a built-in storage or an external storage of the control device 10 , but it is not limited thereto.

The storage device 14 may include a non-transitory computer-readable recording medium, the aforementioned non-transitory computer-readable recording medium stores a computer program 142, and the computer program 142 records computer-executable codes, when the control device 10 executes the aforementioned program After coding, the control function and the addressing method of the deteriorated filter bag in each embodiment of the present invention can be realized. In one embodiment, the dust collection system 1 may include a dust concentration meter 13 at the polluted end electrically connected to the control device 10 . The dust concentration meter 13 at the polluted end may be a dust concentration meter of the same or similar type as the dust concentration meter 12 at the clean end. The dust concentration meter 13 at the polluted end is arranged on the polluted side of the filter bag 20 and is used to sense the pollution value before the polluted air passes through the filter bag 20 before purification.

In this way, the present invention can obtain the current filtering capacity of the dust collection system 1 by comparing the pollution value before purification and the pollution value after purification.

Please refer to FIG. 3 . FIG. 3 is a working diagram of a dust collection system according to an embodiment of the present invention.

In this embodiment, the dust collection system 1 further includes an air inlet 30 , an air chamber 31 , an air outlet 32 , a plurality of diaphragm valves 34 and a dust collection tank 35 .

In this embodiment, the dust concentration meter 13 at the pollution end can be set at the air inlet 30 to measure the pollution situation that has not passed through the filter bag, and the dust concentration meter 12 at the clean end can be set at the air outlet 32 to measure the air after being filtered by the filter bag. In the case of discharged air purification, the air valve 111 is a solenoid valve 33 .

Dust-containing polluted air is introduced into the lower half (pollution side) of the air chamber 31 from the air inlet 30, penetrates through a plurality of filter bags 20 and comes to the upper half (purification side) of the air chamber 31 because the dust will be retained The polluted side of the filter bag 20 becomes clean air. Next, the purified air is discharged from the air outlet 32 .

When the filter bag 20 is to be air-washed (take backwashing as an example), the gas supply device 112 sends high-pressure gas to the solenoid valve 33 through the pipeline. The solenoid valve 33 is opened so that the high-pressure gas is delivered to the plurality of diaphragm valves 34 through the pipeline.

Next, the high-pressure gas flushes open a plurality of diaphragm valves 34 to blow off the dust attached to the filter bag 20 to perform air washing.

The aforementioned diaphragm valve 34 is a special diaphragm valve for the dust collector, and is divided into upper and lower two inflatable chambers by a diaphragm. The two inflatable chambers communicate with each other through a guide hole, and the diameter of the aforementioned guide hole is smaller than the diameter of the vent hole of the electromagnetic valve. When the air release hole of the electromagnetic valve is opened, the speed of the rapid air release of the upper inflatable chamber is far greater than the high-pressure gas entering by the conduit. The pressure of the upper inflatable chamber drops suddenly, and the high-pressure gas in the lower inflatable chamber with higher pressure rushes away the diaphragm. The high-pressure gas flows to the filter bag 20 through the diaphragm valve, and shakes off the attached dust. And, the shaken dust falls on the dust collecting tank 35 to complete the dust collection.

When the vent hole of the solenoid valve is closed, the pressures of the two inflatable chambers tend to be equal again, and the body spring presses down the diaphragm to cover the valve body.

Please refer to FIG. 4 . FIG. 4 is a schematic diagram of the appearance of a dust collecting system according to an embodiment of the present invention.

In this embodiment, the dust collection system 1 includes an air inlet 40 , an air chamber 41 , an air outlet 42 , a dust collection tank 45 and a material discharge port 46 . The air inlet 40, the pollution detector, a plurality of filter bags 47, the purification detector and the gas outlet 42 form a gas flow channel.

The air inlet 40 is used to introduce polluted gas. The air chamber 41 is used to arrange a plurality of filter bags 47 . The air chamber 41 is divided into a purification side connected to the air outlet 42 and a pollution side connected to the air inlet 41 through the arrangement of a plurality of filter bags 47 . The gas outlet 42 is used to discharge the purge gas.

The dust collection tank 45 is used to collect pollutants (such as dust). The feeding opening 46 is disposed in the dust collection tank 45 and is used to discharge the pollutants stored in the dust collection tank 45 .

The air supply pipeline may include an air supply main pipe 50 , a plurality of air supply branch pipes 52 and a plurality of air injection pipes 53 .

The gas supply main pipe 50 is connected to a plurality of gas supply branch pipes 52 . Each air supply branch pipe 52 is connected to one or more air injection pipes 53 (the air supply branch pipes 52 in FIG. 4 are all connected to a plurality of air injection pipes 53 ). Each jet pipe 53 is provided inside the corresponding filter bag 47 .

In this embodiment, a plurality of air valves 51 are respectively arranged between each air supply branch pipe and the air supply main pipe, such as a connection.

When each gas valve 51 is opened, the gas supply main pipe 50 communicates with the corresponding gas supply branch pipe 52 , so that the high-pressure gas can be delivered from the gas supply main pipe 50 to the plurality of gas injection pipes 53 through the corresponding gas supply branch pipe 52 .

When each gas valve 51 is closed, the gas supply main pipe 50 is isolated from the corresponding gas supply branch pipe 52 , so that the high-pressure gas is blocked in the gas supply main pipe 50 .

Please refer to FIG. 16 . FIG. 16 is a flowchart of a method for addressing a deteriorated filter bag according to an embodiment of the present invention. The method for addressing a deteriorated filter bag in this embodiment includes steps S10-S14 for realizing deterioration detection, and may further include a step S15 for automatically modifying the air injection pattern 140 after detecting a deteriorated filter bag.

Step S10: The control device 10 sequentially controls the combination of multiple types of the multiple air injection pipes 110 of the air injection device 11 based on the air injection law 140 to spray air toward the multiple filter bags 20 to blow off the air that is attached to the multiple filter bags 20 pollutants.

Step S11: The control device 10 obtains the post-purification pollution value after each type of combined air injection through the dust concentration meter 12 at the purification end.

Step S12: The control device 10 judges whether the pollution value after purification meets the degradation condition, for example, the pollution value after purification exceeds a preset deterioration threshold.

When the pollution value after purification meets the degradation condition, the control device 10 executes step S13.

Step S13: The control device 10 determines the air injection pipe 110 facing the degraded filter bag among one or more air injection pipes 110 whose pollution value meets the deterioration condition after purification, and issues a filter bag deterioration reminder to the air injection pipe 11 .

When the pollution value after purification does not meet the degradation condition or after step S13 is executed, the control device 10 executes step S14.

Step S14: The control device 10 judges whether to stop the degradation detection, for example, the air washing action of all the filter bags 20 has been completed, the user turns off the degradation detection, and so on.

When there is no need to stop the degradation detection, the control device 10 executes step S10 again to continuously perform the air washing operation and the degradation detection.

When the deterioration detection is stopped and any filter bag 20 is detected to be deteriorated, the control device 10 executes step S15.

Step S15: The control device 10 modifies the air injection law 140 to set the air injection pipe 110 facing the degraded filter bag to no air injection (isolated state).

In one embodiment, the control device 10 can further modify the air injection pattern 140 to replace the air injection pipe 110 facing the degraded filter bag with other air injection pipes 110 to stop using the air injection pipe 110 facing the degraded filter bag to avoid the air injection of the filter bag. further deterioration.

The present invention can effectively detect whether the deteriorated filter bag exists without stopping dust collection, and address the deteriorated filter bag.

Please refer to Fig. 8, Fig. 14 and Fig. 15, Fig. 8 is a schematic diagram of an air injection law according to an embodiment of the present invention, Fig. 14 is a schematic diagram of an air injection law according to an embodiment of the present invention, and Fig. 15 is a schematic diagram of an air injection law according to an embodiment of the present invention schematic diagram.

In the embodiment shown in FIG. 8 , FIG. 14 and FIG. 15 , the dust collection system 1 includes 16 jet pipes, which are respectively A1-A4, B1-B4, C1-C4 and D1-D4.

The air injection rule shown in Figure 8 is to divide the 16 air injection pipes into four types of combinations, which are respectively air injection pipes A1-A4 (first type combination), air injection pipes B1-B4 (second type combination), air injection Tubes C1-C4 (combination of the third type) and jet tubes D1-D4 (combination of the fourth type).

As shown in FIG. 8( i ), in the first cycle, the control device 10 controls the air injection of the air injection pipes A1 - A4 (first type combination), and senses the first post-purification pollution value of the first type combination.

As shown in FIG. 8(ii), in the second cycle, the control device 10 controls the air injection of the air injection pipes B1-B4 (the second type combination) and senses the second post-purification pollution value of the second type combination.

As shown in FIG. 8(iii), in the third cycle, the control device 10 controls the air injection of the air injection tubes C1-C4 (third type combination), and senses the third post-purification pollution value of the third type combination.

And, in the third cycle, the control device 10 detects that the third pollution value after purification of the third type combination meets the deterioration condition, and it can be determined that the filter bag 20 toward which at least one of the air injection pipes C1-C4 is facing deteriorating.

As shown in FIG. 8(iv), in the fourth cycle, the control device 10 controls the air injection of the air injection pipes D1-D4 (fourth type combination) and senses the first post-purification pollution value of the fourth type combination.

The air injection rule shown in Figure 14 is to divide the 16 air injection pipes into two types of combinations, respectively, air injection pipes A1-A2, B2-B3, C3-C4, D1 and D4 (first type combination), air injection pipes A3-A4, B1, B4, C1-C2 and D2-D3 (second type combination).

As shown in FIG. 14( i ), in the first period, the control device 10 controls the first type of combined air injection, and senses the first post-purification pollution value of the first type of combination.

As shown in FIG. 14(ii), in the second cycle, the control device 10 controls the second type combination air injection, and senses the second post-purification pollution value of the second type combination.

The air injection rule shown in Figure 15 is to divide the 16 air injection pipes into two groups, namely the air injection pipes A1-A4, B1-B4, C1-C4, D1-D4 (the first group) and B2-B3, C2-C3 (second group).

Moreover, the first group and the second group have different alternate frequencies, the first group is set to four cycles/time because the filtering frequency is low, and the second group is reduced to two cycles/time because the filtering frequency is high.

Furthermore, the first group has four type combinations, namely A1-A4 (the first type combination), B1-B4 (the second type combination), C1-C4 (the third type combination) and D1 -D4 (fourth type group combine). The second group has two type combinations, namely B2, C3 (fifth type combination) and B3, C2 (sixth type combination).

As shown in Fig. 15(i), in the first cycle, the control device 10 controls the combination of the first type and the combination of the fifth type to inject air, and senses the first Pollution value after purification.

As shown in FIG. 15(ii), in the second cycle, the control device 10 controls the combination of the second type and the sixth type of air injection, and senses the second cleaning of the combination of the second type and the sixth type. post-pollution value.

As shown in Fig. 15(iii), in the third cycle, the control device 10 controls the combination of the third type and the combination of the fifth type to inject air, and senses the third Pollution value after purification.

As shown in Figure 15(iv), in the fourth cycle, the control device 10 controls the combination of the fourth type and the combination of the sixth type to inject air, and senses the fourth purification of the combination of the fourth type and the sixth type post-pollution value.

Please refer to FIG. 16 and FIG. 17 . FIG. 17 is a partial flowchart of a method for addressing a deteriorated filter bag according to an embodiment of the present invention. Compared with the method for addressing deteriorated filter bags in the embodiment of FIG. 16 , step S13 of the method for addressing deteriorated filter bags in FIG. 17 includes steps S20-S24 for performing addressing for deteriorated filter bags.

Step S20: When the pollution value after purification of any type combination meets the deterioration condition, the control device 10 reduces or changes the combination, and executes the air injection again with the new type combination.

In one embodiment, the control device 10 can perform addressing based on trigger time. in particular. The control device 10 can obtain the trigger time of each air injection pipe 110 (such as the time required to obtain the pollution value after the air injection), and obtain the response time from the current type combination air injection to the pollution value after the purification, and will respond The time is compared with the triggering time of each air injection pipe 110 to determine the appropriate air injection pipe 110 as the air injection pipe for filter bag degradation.

Step S21: The control device 10 obtains the post-purification pollution value of the new type combination through the dust concentration meter 12 at the purification end.

Step S22: The control device 10 judges whether the pollution value after purification meets the degradation condition.

When the pollution value after purification does not meet the degradation condition, the control device 10 executes step S14.

When the pollution value after purification meets the degradation condition, the control device 10 executes step S23.

Step S23: The control device 10 judges whether the addressing of the degraded filter bag has been completed, such as whether it can be determined which filter bag 20 facing the jet pipe 110 is degraded, or all possible reductions or changes in combination have been tried, but the location of the degraded filter bag cannot be determined. Corresponding jet pipe 110.

When the addressing of the deteriorated filter bag is not completed, the control device 10 executes step S20 again to continue the addressing.

When the addressing of the deteriorated filter bag is completed, the control device 10 executes step S24.

Step S24: The control device 10 issues a filter bag deterioration reminder to the air injection pipe 11 facing the deteriorated filter bag.

In one embodiment, taking the reduced combination as an example, the control device 10 may divide the type combination into multiple sub-combinations, and use the multiple sub-combinations to perform air injection. The number of jet tubes of the aforementioned type combination is greater than the number of jet tubes of each sub-combination.

The control device 10 can perform the following steps to perform addressing: perform air injection on a plurality of sub-combinations of this type of combination; obtain the pollution value after purification after each combination of air injection; and, when any pollution value after purification meets the deterioration condition, zoom out The sub-combination is used to inject air and sense again until it is decided to head towards the air injection pipe 110 of the deteriorated filter bag.

Please refer to FIG. 8 and FIG. 9 . FIG. 9 is a schematic diagram of an air injection pattern according to an embodiment of the present invention.

In FIG. 8 , it is determined that the filter bag 20 toward which at least one of the jet pipes C1-C4 (third type combination) is facing is degraded.

For this, the control device 10 may divide the third type combination into two sub-combinations for air injection, and the two sub-combinations are respectively C1-C2 (the first sub-combination) and C2-C4 (the second sub-combination).

As shown in FIG. 9( i ), in the fifth cycle, the control device 10 controls the air injection of the first sub-combination, and senses the pollution value of the first sub-combination after purification.

As shown in FIG. 9(ii), in the sixth cycle, the control device 10 controls the air injection of the second sub-combination, and senses the pollution value of the second sub-combination after purification.

Moreover, in the sixth cycle, the control device 10 detects that the pollution value after purification of the second subgroup meets the degradation condition, and it can be determined that the filter bag 20 toward which at least one of the jet pipes C3-C4 is degraded.

For this, the control device 10 may further divide the second sub-combination into two sub-combinations for air injection, and the two sub-combinations are respectively C3 (third sub-combination) and C4 (fourth sub-combination).

As shown in FIG. 9(iii), in the seventh cycle, the control device 10 controls the air injection of the third sub-combination, and senses the pollution value of the third sub-combination after purification.

As shown in FIG. 9(iv), in the eighth cycle, the control device 10 controls the air injection of the fourth sub-combination, and senses the pollution value of the fourth sub-combination after purification.

Moreover, in the eighth cycle, the control device 10 detects that the pollution value after purification of the fourth sub-combination meets the deterioration condition, and it can be determined that the filter bag 20 towards which the jet pipe C4 is directed is deteriorated.

Thereby, the present invention can accurately address the deteriorated filter bag.

In one embodiment, addressing based on the trigger time is taken as an example. The control device 10 can obtain the trigger time of each jet tube 110 of this type combination, and through the response time of the current pollution value after purification and the response time of each jet tube 110 Trigger time to determine the jet pipe 110 for filter bag degradation.

Specifically, the control device 10 can perform the following steps to address: obtain the pipeline wind speed and a plurality of trigger distances from the filter bags 20 to the dust concentration meter 12 at the purification end (which can be pre-stored in the storage device 14); A plurality of triggering distances calculates multiple triggering times of a plurality of jet pipes 110; The response time from this combination of air injection to receiving the corresponding pollution value after purification is obtained; and, the air injection pipe 110 whose trigger time matches the response time is selected as the air injection pipe 110 for filter bag degradation.

Please refer to FIG. 8 , FIG. 10 and FIG. 11 together. FIG. 10 is a relationship diagram between air injection control and pollution value according to an embodiment of the present invention. FIG. 11 is a schematic diagram of a trigger schedule according to an embodiment of the present invention.

As shown in FIG. 10 , during the time interval 0-t1 (air injection time), the control device 10 controls the first type combination (air injection pipes A1-A4) to continue air injection. During the time interval t1-t2 (air injection interval), the control device 10 controls all types of combinations to stop air injection, and obtains the post-purification pollution value (pollution value) of the first type combination through the dust concentration meter 12 at the purification end.

During the time interval t2-t3 (air injection time), the control device 10 controls the second type combination (air injection pipes B1-B4) to continue air injection. During the time interval t3-t4 (air injection interval), the control device 10 controls all types of combinations to stop air injection, and obtains the post-purification pollution value of the second type combination through the dust concentration meter 12 at the purification end.

During the time interval t4-t5 (air injection time), the control device 10 controls the third type combination (air injection pipes C1-C4) to continue air injection. During the time interval t5-t6 (air injection interval), the control device 10 controls all types of combinations to stop air injection, and obtains the post-purification pollution value of the third type combination through the dust concentration meter 12 at the purification end.

Moreover, at a time point close to t6 (for example, t5+6.9 seconds), the control device 10 detects through the dust concentration meter 12 at the purification end that the pollution value after purification meets the deterioration condition. In other words, one of the air jets C1-C4 is directed toward the degraded filter bag.

During the time interval t6-t7 (air injection time), the control device 10 controls the fourth type combination (air injection pipes D1-D4) to continue air injection. During the time interval t7-t8 (air injection interval), the control device 10 controls all types of combinations to stop air injection, and obtains the post-purification pollution value of the fourth type combination through the dust concentration meter 12 at the purification end.

As shown in FIG. 11 , the control device 10 can calculate the triggering time of each gas injection pipe, and obtain the response time (6.9 seconds). Next, compare the response time with the trigger time of each jet to determine the jet with the closest time, which is jet C4 (7 seconds).

Thereby, the control device 10 can determine that the filter bag toward which the jet pipe C4 is directed is degraded.

It is worth mentioning that the aforementioned air injection interval must be greater than the trigger time of all air injection pipes, so that the air injection pipes of deteriorated filter bags can be detected correctly based on the time difference.

In one embodiment, taking the change combination as an example, the control device 10 can set another type combination (hereinafter referred to as the change combination) different from the currently used type combination (prototype combination), and use the change combination to perform air injection. . The air injection pipe 010 of each aforementioned change combination is only partially repeated with the air injection pipe 010 of the original form combination.

The control device 10 can perform the following steps to perform addressing: perform air injection with a plurality of changed combinations that are partially repeated with the original state combination; obtain the post-purification pollution value of each changed combination after air injection; determine that the purified pollution value after air injection meets the degradation condition and, set the air injection pipe 110 repeated in the change combination and the original form combination as the air injection pipe 110 towards the deteriorated filter bag.

Please refer to FIG. 8 and FIG. 12 . FIG. 12 is a schematic diagram of an air injection pattern according to an embodiment of the present invention.

The air injection law shown in Figure 12 is to divide the 16 air injection pipes into four change combinations, respectively, air injection pipes A1, B1, C1, D1 (the first change combination), air injection pipes A2, B3, C3, D3 (the second change combination), air jets A3, B3, C3, D3 (the third change combination) and air jets A4, B4, C4, D4 (the fourth change combination).

As shown in FIG. 12( i ), in the fifth cycle, the control device 10 controls the air injection of the first changed combination, and senses the pollution value after purification of the first changed combination.

As shown in FIG. 12(ii), in the sixth cycle, the control device 10 controls the air injection of the second modified combination, and senses the pollution value after purification of the second modified combination.

As shown in FIG. 12(iii), in the seventh cycle, the control device 10 controls the air injection of the third modified combination, and senses the pollution value after purification of the third modified combination.

As shown in FIG. 12(iv), in the eighth cycle, the control device 10 controls the air injection of the fourth modified combination, and senses the pollution value after purification of the fourth modified combination.

And, in the eighth cycle, the control device 10 detects that the pollution value after purification of the fourth changed combination meets the deterioration condition, and it can be determined that at least one of the air injection pipes A4, B4, C4, and D4 is directed towards the filter bag 20 Deterioration occurs.

Moreover, in the detection of FIG. 8 , it has been determined that the filter bag 20 toward which at least one of the jet pipes C1 - C4 is degraded.

Therefore, by integrating the above detection results, it can be determined that the filter bag 20 corresponding to the jet tube C4 (the overlapping portion of the third type combination and the fourth modified combination) has deteriorated.

Please refer to FIGS. 8 and 13 . FIG. 13 is a schematic diagram of a modified air injection pattern according to an embodiment of the present invention.

After completing the addressing of the deteriorated filter bag, the control device 10 can modify the air injection pattern, such as deactivating the air injection pipe C4 corresponding to the deteriorated filter bag and replacing it with surrounding air injection pipes B4 and D4.

The specific implementation of the modified jet law is as follows.

As shown in FIG. 13(i), in the first period, the control device 10 controls the air injection pipes A1-A4 (first type combination) to inject air.

As shown in FIG. 13(ii), in the second cycle, the control device 10 controls the air injection pipes B1-B4 (second type combination) to inject air.

As shown in FIG. 13(iii), in the third cycle, the control device 10 controls the air injection pipes C1-C3, B4, D4 (modified third type combination) to inject air.

In this way, the reduced dust collection efficiency caused by disabling the air injection pipe C3 is compensated by increasing the air injection pipes B4 and D4.

As shown in FIG. 13(iv), in the fourth period, the control device 10 controls the air injection pipes D1-D4 (fourth type combination) to inject air.

Fig. 18 is a partial flowchart of a method for addressing a deteriorated filter bag according to an embodiment of the present invention. In this embodiment, the deterioration condition includes the cumulative number of times that the pollution value after purification after the combined air injection of the same type exceeds the deterioration threshold and reaches the deterioration threshold.

Compared with the degraded filter bag addressing method in the embodiment of FIG. 16 , step S12 of the degraded filter bag addressing method in FIG. 18 includes steps S30 - S32 for performing degradation condition judgment.

Step S30: the control device 10 judges whether the pollution value after purification meets the preset deterioration critical value. The aforementioned deterioration critical value may be, for example, the upper limit value of the maximum pollution concentration stipulated by the government or set by the factory itself.

When the pollution value after purification does not meet the deterioration threshold value, the control device 10 executes step S14.

When the pollution value after purification meets the deterioration threshold value, the control device 10 executes step S31.

Step S31: The control device 10 performs multiple retests on the current type combination to obtain the post-purification pollution value of the multiple retests.

The number of retests mentioned above can be set arbitrarily according to requirements, for example, it is greater than the cumulative number of times.

Step S32: The control device 10 judges whether the multiple post-purification pollution values obtained by multiple re-measurements exceed the post-purification pollution value.

If multiple re-measurement of multiple purification pollution values obtained exceeds the purification pollution value (for example, the number of times exceeding the purification pollution value is greater than the preset cumulative number of times, such as 5 times), then it is determined that the filter bag 20 is degraded, and execution Step S13.

If the post-purification pollution values obtained by multiple re-measurements exceed the post-purification pollution value for a cumulative number of times, it is determined that the filter bag 20 is degraded, and step S13 is executed.

If the multiple post-purification pollution values obtained by multiple re-measurements do not exceed the post-purification pollution value or exceed but do not reach the cumulative number of times, it can be determined that the filter bag 20 is not degraded, and step S14 is executed.

Therefore, the present invention can reduce misjudgment and improve detection accuracy.

The above descriptions are only preferred specific examples of the present invention, and are not intended to limit the patent scope of the present invention. Therefore, all equivalent changes made by using the content of the present invention are all included in the scope of the present invention in the same way. Chen Ming.

S10-S15: Deterioration filter bag detection steps

Claims (17)

A dust collection system with a function of addressing deteriorated filter bags, comprising: an air injection device, including a plurality of air injection pipes, the air injection device is used to inject air through the plurality of air injection pipes towards a plurality of filter bags, to blow off the dust attached to the plurality of filter bags. Pollutants on the filter bags; a dust concentration meter at the cleaning end, set on a cleaning side of the plurality of filter bags, for sensing a pollution value after purification; and a control device, electrically connected to the air injection device and the purification Dust concentration meter at the end, the control device is set to control the combination of multiple types of the plurality of air injection pipes to perform air injection based on an air injection rule, and obtain multiple values after the combination of air injection of multiple types through the dust concentration meter at the purification end a plurality of the decontaminated pollution values, wherein each of the type combinations includes a plurality of the air injection pipes that are not repeated or partially repeated; wherein the control device is configured to correspond to a degradation in one of the decontaminated pollution values conditions, determine the jet pipe towards a degraded filter bag from the type combination corresponding to the post-purification pollution value that meets the deterioration condition, and issue a filter bag deterioration reminder to the jet pipe; wherein, the control device It is set to modify the air injection pattern used, so as to set the air injection pipe facing the deteriorated filter bag in an isolated state without injecting air. The dust collection system as described in claim 1 further includes a storage device electrically connected to the control device, and the storage device is used to store the air injection pattern and the deterioration condition. The dust collection system as described in claim 1, further includes a storage device electrically connected to the control device, the storage device is used to store the air injection pattern and the deterioration condition, the deterioration condition The condition includes a cumulative number of times that the pollution value after purification exceeds a critical value of degradation after the combined air injection of the same type reaches a critical number of degradation times. The dust collection system as described in claim 1, wherein the control device is set to perform air injection in a plurality of sub-combinations of the type combination, and when the post-purification pollution value of any of the sub-combinations meets the deterioration condition, The sub-combination is narrowed down to inject air and sense again until the jet tube towards the deteriorated filter bag is determined; wherein, the number of a jet tube of the type combination is greater than the number of a jet tube of each sub-combination. The dust collection system as described in claim 1, wherein the control device is set to perform air injection with a plurality of change combinations that overlap with the type combination, and determine that the purified pollution value after air injection meets the change of the deterioration condition combination, and set the air injection pipe that is repeated in the change combination and the type combination as the air injection pipe toward the deteriorated filter bag. The dust collection system as described in claim 1, further comprising a storage device electrically connected to the control device for storing multiple trigger distances from the plurality of filter bags to the dust concentration meter at the purification end; wherein the control device It is set to calculate a plurality of trigger times of the plurality of air injection pipes based on a pipeline wind speed and the plurality of trigger distances, obtain a response time from the combination of the type of air injection to the receipt of the purified pollution value, and select the trigger time The jet tube that meets the response time is used as the jet tube that the filter bag deteriorates. The dust collection system as described in claim 1, wherein the air injection device includes: A plurality of gas valves are respectively arranged in a gas supply pipeline leading to the plurality of gas injection pipes, each of which is opened to introduce high-pressure gas to the gas injection pipe, and blocks the high-pressure gas from flowing to the gas injection pipe when it is closed ; and a gas supply device, used to provide the high-pressure gas to each of the gas valves; wherein, the control device includes: an expansion version, electrically connected to a part of the plurality of gas valves, and used to indicate the plurality of gas valves in the part The state of the air valve; and a sequence control board, electrically connected to the expansion board and the plurality of air valves of the other part, used to indicate the state of the plurality of air valves of the other part; wherein, the sequence control board is set To control the opening and closing of the plurality of air valves in the part through the expanded version. The dust collection system as described in claim 1, wherein the air injection device includes: the plurality of air injection pipes arranged inside the plurality of filter bags; a plurality of air supply branch pipes connected to the plurality of air injection pipes, at least one of which is The air supply branch pipe is connected to a plurality of the air injection pipes; an air supply main pipe is connected to the plurality of air supply branch pipes; a plurality of air valves are respectively arranged between each of the air supply branch pipes and the air supply main pipe, and each of the air valves is located between the air supply branch pipes and the air supply main pipe. When it is opened, the main gas supply pipe communicates with the gas supply branch pipe, and when it is closed, the gas supply main pipe and the gas supply branch pipe are isolated; and a gas supply device is connected to the gas supply main pipe to provide high-pressure gas. The dust collecting system as described in Claim 8 further includes a plurality of diaphragm valves respectively disposed on the plurality of air injection pipes; wherein the plurality of air valves include solenoid valves. The dust collection system as described in claim 1, further comprising: an air inlet for introducing a polluted gas; an air outlet for discharging a purified gas; an air chamber for setting the plurality of filter bags, wherein The air chamber is divided into the purification side connected to the air outlet and a pollution side connected to the air inlet through the arrangement of the plurality of filter bags; a dust collection tank for collecting the pollutants; and a discharge port for setting The dust collection tank is used to discharge the stored pollutants; wherein, the air inlet, the pollution meter, the plurality of filter bags, the purification meter and the air outlet form a gas flow channel. A method for addressing a deteriorated filter bag of a dust collection system, comprising: a) sequentially controlling a combination of multiple types of a plurality of air injection pipes of an air injection device based on an air injection rule to spray air toward multiple filter bags to blow off the filter bags attached to Pollutants on the plurality of filter bags, wherein each of the pattern combinations includes a plurality of non-repeated or partially repeated air injection pipes; b) dust concentration through a clean end that is arranged on a clean side of the plurality of filter bags Calculate and obtain a plurality of post-purification pollution values after a plurality of combined jets of this type; c) When one of the plurality of post-purification pollution values meets a degradation condition, the post-purification pollution value that meets the degradation condition In the corresponding type combination, determine the jet pipe towards a degraded filter bag, and issue a filter bag deterioration reminder to the jet pipe; and d1) revise the jet law used to set the jet towards the degraded filter bag The jet tube is isolated and does not jet. The method for addressing the deteriorated filter bag as described in claim 11 further includes: d2) modifying the air injection pattern to replace the air injection with other air injection pipes. The method for addressing a degraded filter bag according to claim 11, wherein the degraded condition includes that the post-purification pollution value exceeds a degraded critical value. The method for addressing a degraded filter bag according to claim 11, wherein the degraded condition includes a cumulative number of times that the purified pollution value exceeds a degraded critical value after the same type of combined air injection reaches a degraded critical number of times. The addressing method for degraded filter bags as described in claim 11, wherein the step c) includes: c1) performing air injection with multiple sub-combinations of the type combination, wherein the number of an air injection pipe of the type combination is greater than that of each sub-combination A number of air injection pipes; c2) obtain the pollution value after purification of each sub-combination after air injection; and c3) when any pollution value after purification meets the deterioration condition, reduce the sub-combination to inject air and sense again until Determine the jet pipe towards the degraded filter bag. The addressing method for degraded filter bags as described in claim 11, wherein the step c) includes: c4) injecting air with a plurality of changed combinations that are partially repeated with the type combination; c5) obtaining the purification after each of the changed combined air injection post-pollution value; c6) determining that the post-purification pollution value after the air injection meets the change combination of the deterioration condition; and c7) setting the air injection pipe repeated in the change combination and the type combination as the direction towards the deteriorated filter bag The jet tube. The addressing method for degraded filter bags as described in claim 11, wherein the step c) includes: c8) obtaining a pipeline wind speed and multiple trigger distances from the multiple filter bags to the dust concentration meter at the cleaning end; c9) calculate a plurality of trigger times of the plurality of air injection pipes based on the pipeline wind speed and the plurality of trigger distances; c10) obtain a response time from the combined air injection of the type to the pollution value after purification; and c11) select The jet pipe whose trigger time matches the response time is used as the jet pipe whose filter bag deteriorates.

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