JP5707631B1 - Bag filter for collecting fine powder that enables continuous operation - Google Patents

Abstract

The present invention provides a fine powder collection bag filter that removes residual fine powder collected by a fine powder collection bag without tripping a blower that is a carrier gas supply source and enables continuous operation. The gas storage unit is provided with a partition in the vertical direction after collecting the residual fine powder to divide the gas storage unit after collecting the residual fine powder, and each of the divided gas storage units after collecting the residual fine powder has an exhaust valve. Provide gas exhaust after collecting residual fines. After collecting the residual fine powder, a partition that extends the partition of the gas containing portion is provided at least up to the height of the bottom of the fine powder collecting bag to divide the residual fine powder collecting portion. The exhaust valve is an automatic control valve, and the removal time of the collected residual fine powder can be set. [Selection] Figure 1

Description

The present invention relates to a fine powder collecting bag filter that removes residual fine powder collected by a fine powder collecting bag without tripping a blower that is a supply source of carrier gas and enables continuous operation.

2. Description of the Related Art Conventionally, there is a technique for circulating a carrier gas between a carrier gas supply unit and a fine powder processing unit when conveying fine powder to a fine powder processing unit using a carrier gas.

In this technology, in order to collect the residual fine powder in the post-conveyance gas in the post-conveyance gas return line for returning the post-conveyance gas after the fine powder has been conveyed to the fine powder processing section, There is provided a fine powder collecting bag filter mainly composed of a bag.

The residual fine powder collected by the fine powder collection bag is removed by applying an impact to the fine powder collection bag with a pulse jet so as to settle to the bottom of the fine powder collection bag filter.

However, the collected residual fine powder floats without sinking to the bottom of the fine powder collecting bag filter and adheres again to the fine powder collecting bag, causing clogging of the fine powder collecting bag. As a result, the blower, which is a carrier gas supply source, generates heat as the discharge pressure increases, causing power up and tripping.

If the blower, which is the carrier gas supply source, trips manually before the trip, and the residual fine powder collected in the fine powder collection bag is removed by a pulse jet in the absence of carrier gas flow, the removed residual fine powder It settles on the bottom of the bag filter for collecting fine powder without reattaching to the collecting bag. Therefore, the blower, which is the carrier gas supply source, is restarted when the conditions are met.

In the case of the conventional fine powder collection bag filter, when the predetermined number of bag filter rooms is increased by one and the pressure loss of the filter cloth of the fine powder collection bag in one of them exceeds a predetermined reference value Stop one of the chambers, remove dust from the chamber, and restart the filter when the pressure drop of the filter cloth of the fine powder collection bag falls below a predetermined value. There is also one that is characterized by reducing the pressure loss of the fine powder collection bag repeatedly (see, for example, Patent Document 1).

In some cases, the residual fine powder is reduced through a one or two-stage cyclone using centrifugal force, and then applied to a fine powder collecting bag filter. However, there is a limit to the residual fine powder that can be collected by the cyclone, and as a result, the residual fine powder collected as described above may float and adhere to the fine powder collection bag again, causing clogging of the fine powder collection bag. . In this case as well, the blower, which is a carrier gas supply source, generates heat as the discharge pressure increases and trips with increased power.

JP-A-6-126116

The conventional fine powder collecting bag filter as described above has the following problems.

Even if the residual fine powder collected in the fine powder collection bag is removed by the pulse jet, the collected residual fine powder floats without sinking to the bottom of the fine powder collection bag filter and adheres again to the fine powder collection bag. Causes the collection bag to become clogged. As a result, the blower, which is a carrier gas supply source, generates heat as the discharge pressure increases, causing power up and tripping.

From the above, it is an object to provide a fine powder collection bag filter that removes residual fine powder collected by a fine powder collection bag without tripping a blower that is a carrier gas supply source, and enables continuous operation. .

In order to solve the above-described problems, the fine powder collecting bag filter according to the present invention has the following means.

As a first means, in order to collect the residual fine powder from the post-conveying gas in the fine powder transport to the fine powder processing section for circulating the transport gas between the transport gas supply section and the fine powder processing section, the post-transport gas introduction section A residual fine powder collecting part having a fine powder collecting bag, a gas storage part after collecting the residual fine powder, a gas exhausting part after collecting the residual fine powder, a collected residual fine powder removing part, and a removed residual fine powder discharging part In the bag filter for collecting fine powder, the gas container after the collection of residual fine powder is divided by dividing the gas container after collecting the residual fine powder by dividing the gas container after collecting the residual fine powder. In addition, a gas exhaust unit after collecting the residual fine powder having an exhaust valve is provided.

As a second means, the residual fine powder collecting section is divided by providing a partition extending the partition of the gas storage section after collecting the residual fine powder at least up to the height of the bottom of the fine powder collecting bag.

As a third means, the exhaust valve is an automatic control valve, and the removal time of the collected residual fine powder can be set.

The bag filter for collecting fine powder according to claim 1 of the present invention is provided with a partition in the vertical direction in the gas storage portion after collecting the residual fine powder, and dividing the gas storage portion after collecting the residual fine powder. It is characterized in that a gas exhaust unit after collecting residual fine powder having an exhaust valve is provided for each rear gas storage unit.

Therefore, by closing the exhaust valve, the gas storage part after collecting the residual fine powder that collects the residual fine powder is installed in the gas storage part after collecting the residual fine powder provided with the gas exhaust part after collecting the residual fine powder having the closed exhaust valve. In the absence, the surroundings of the fine powder collecting bag underneath can be made in a state where there is no flow of gas after conveyance including residual fine powder.

The fine powder collection bag under the gas container after collecting the residual fine powder that does not close the exhaust valve collects the residual fine powder because there is a flow of gas after conveyance containing residual fine powder, while closing the exhaust valve Further, since the fine powder collection bag under the gas storage portion after collecting the residual fine powder does not have a flow of gas after conveyance including the residual fine powder, the collected residual fine powder can be removed by a pulse jet.

From the above, by continuously changing the gas container after collecting the residual fine powder that closes the exhaust valve, the residual fine powder collected in the fine powder collecting bag is removed without tripping the blower, and the continuous filter of the fine powder collecting bag filter Driving becomes possible.

The bag filter for collecting fine powder according to claim 2 of the present invention has at least a partition for extending the partition of the gas storage part after collecting the remaining fine powder in the bag filter for collecting fine powder according to claim 1. The residual fine powder collection part is divided by providing up to the height of the bottom part of the above.

As described above, the fine powder collecting bag filter according to claim 1 can remove the residual fine powder collected by the fine powder collecting bag under the gas storage part after collecting the residual fine powder with the exhaust valve closed by the pulse jet. . However, the removed residual fine powder may float and adhere to the fine powder collection bag under the gas storage section after collecting the residual fine powder that does not close the exhaust valve where the gas flow after conveyance is closed.

In order to solve this problem, the fine powder collecting bag filter according to claim 2 is configured such that the residual fine powder removed by the partition provided in the residual fine powder collecting section is the gas storage section after collecting the residual fine powder whose exhaust valve is not closed. Can be prevented from adhering to the fine powder collecting bag underneath.

Therefore, the continuous operation is possible without tripping the blower than the fine powder collecting bag filter according to claim 1.

In the fine powder collecting bag filter according to claim 1, when the residual fine powder that has been removed floats and adheres to the fine powder collecting bag under the gas storage portion after collecting the residual fine powder that does not close the exhaust valve. As described above, this does not mean that the fine powder collecting bag filter according to claim 1 is inferior to the fine powder collecting bag filter according to claim 2.
The fine powder collecting bag filter according to claim 1 has a simple configuration because there is no partition extending the partition of the gas storage part after collecting the residual fine powder as compared with the fine powder collecting bag filter according to claim 2. It has the effect.

The fine powder collecting bag filter according to claim 3 of the present invention has an exhaust valve of the fine powder collecting bag filter according to claim 1 or 2 as an automatic control valve, and can set the removal time of the collected residual fine powder. It is a feature.

Therefore, the removal time according to the number of fine powder collection bags, the amount of collected residual fine powder, and the like can be set for each residual fine powder collection section. In addition, the removal time can be set to be long in order to reliably remove the residual fine powder, or the removal time can be set to be short in order to increase the availability of the bag filter for collecting fine powder. The exhaust valve can be opened and closed automatically according to the set removal time.

Therefore, the continuous operation which does not trip a blower more and the continuous operation which improved the operation rate are attained rather than the bag filter for fine powder collection concerning Claim 1 or 2.

From the above, it is possible to provide a fine powder collecting bag filter that removes the residual fine powder collected by the fine powder collecting bag without tripping the blower that is the supply source of the carrier gas, and enables continuous operation. In addition, it is possible to provide a fine powder collecting bag filter capable of continuous operation with improved operating rate.

It is a systematic diagram of fine powder conveyance including a sectional view of the bag filter for collecting fine powder according to claim 1 of the present invention. It is a top view of the bag filter for fine powder collection concerning Claim 1 of the present invention. It is sectional drawing of the bag filter for fine powder collection which concerns on Claim 2 of this invention. It is a top view of the bag filter for fine powder collection concerning Claim 2 of the present invention. It is sectional drawing of the bag filter for fine powder collection which concerns on Claim 3 of this invention. It is sectional drawing of another embodiment of the bag filter for fine powder collection which concerns on Claim 3 of this invention. It is a top view of the bag filter for fine powder collection concerning Claim 3 of the present invention. It is a systematic diagram of fine powder conveyance including a sectional view of a bag filter for collecting fine powder in a comparative example. It is a top view of the bag filter for fine powder collection in a comparative example.

Hereinafter, an embodiment of a bag filter for collecting fine powder according to the present invention will be described with reference to FIGS.

In addition, this description is an example which showed the claim, and does not mean limiting a claim to this description.

First, a comparative example will be described with reference to FIGS. 8 and 9 for comparison with the fine powder collecting bag filter according to the present invention.

FIG. 8 is a system diagram of fine powder conveyance including a cross-sectional view of a fine powder collecting bag filter in a comparative example.

The input fine powder 31 input from the fine powder input unit 2 is conveyed to the fine powder processing unit 3 that performs processing of the fine powder by the carrier gas 21 supplied from the carrier gas supply unit 1.

The carrier gas supply unit 1 includes a carrier gas supply port 1A and a blower 1B as a carrier gas supply source, and a carrier gas 21 is supplied to the carrier gas supply line 11 by the blower 1B. The carrier gas supply line 11 is a line from the blower 1B to the fine powder processing unit 3, and includes a carrier gas supply line upstream 11A, a carrier gas supply line middle stream 11B, and a carrier gas supply line downstream 11C.

The carrier gas supply line upstream 11 </ b> A is a line from the blower 1 </ b> B to the fine powder input unit 2.

The carrier gas supply line middle stream 11 </ b> B is a line from the fine powder input unit 2 to a confluence point with a line (without reference numeral) from the discharge unit 107 of the removed residual fine powder constituting the fine powder collecting bag filter 101 described later. .

The carrier gas supply line downstream 11 </ b> C is a line from the above-described junction to the fine powder processing unit 3.

In this way, the charged fine powder 31 is conveyed to the fine powder processing unit 3 by the carrier gas 21 and the carrier gas supply line 11.

The post-conveyance gas 22 after the input fine powder 31 is conveyed to the fine powder processing unit 3 returns to the blower 1B through the post-conveyance gas return line 12.

As described above, the carrier gas is circulated between the carrier gas supply unit 1 and the fine powder processing unit 3.

Not all of the charged fine powder 31 is transported to the fine powder processing unit 3, but a small amount of the fine powder 31 remains without being transported and becomes a residual fine powder 33. Therefore, the post-conveyance gas 22 contains residual fine powder 33.

In order to collect the residual fine powder 33 and convey it to the fine powder processing unit 3, the post-conveyance gas return line 12 is provided with a fine powder collection bag filter 101 mainly composed of a fine powder collection bag 103A. .

The configuration and operation of the fine powder collecting bag filter 101 will be described.

The fine powder collecting bag filter 101 includes a post-conveyance gas introduction section 102, a residual fine powder collection section 103, a residual fine powder collection gas storage section 104, a residual fine powder collection gas exhaust section 105, and removal of the collected residual fine powder . It is comprised from the part 106 and the discharge part 107 of the removed residual fine powder.

The post-conveyance gas introduction unit 102 is an inlet for introducing the post-conveyance gas 22.

The residual fine powder collection unit 103 is a space provided with a fine powder collection bag 103A, and collects the residual fine powder 33 by the fine powder collection bag 103A installed in the vertical direction. Trapped residual fines 34 in FIG. 8, is indicated by broken lines outside the fines collection bag 103A.

The gas storage unit 104 after collecting the residual fine powder is a space for storing the gas 23 after collecting the residual fine powder in which the residual fine powder 33 is collected. It is provided on the top.

The gas exhaust unit 105 after collecting residual fine powder is an outlet for exhausting the gas 23 after collecting residual fine powder.

Removing unit 106 of the collected residual fines is to remove residual fines 34 were collected from the fines collection bag 103A, specifically the pulse jet micronized collecting bag 103A by pulse jet nozzle 106D is (impact) To do.

In order to operate the pulse jet nozzle 106D, a pressurized air chamber 106A, an electromagnetic valve 106B, and a pressurized air pipe 106C are provided.

The pulse jet nozzle 106D is provided on the fine powder collection bag 103A in order to allow the collected residual fine powder 34 to settle as a removed residual fine powder 35 on the bottom of the fine powder collection bag filter 101. The pulse jet nozzle 106D emits a pulse jet from above toward the fine powder collection bag 103A.

Discharging unit 107 of the removed residual fines is to discharge housing the residual fines 35 have been removed. As described above, the removed residual fine powder 35 is conveyed to the merging point with the intermediate flow 11B of the conveying gas supply line through a line (no reference) to the merging point, and is conveyed to the fine powder processing unit 3 by the conveying gas 21.

The post-conveyance gas return line 12 is provided with a fine powder collection bag filter 101, so that the post-conveyance gas return line upstream 12A from the fine powder processing section 3 to the post-conveyance gas introduction section 102 and the residual fine powder collection gas The post-conveyance gas return line downstream 12B from the exhaust part 105 to the blower 1B is comprised.

The post-conveyance gas 22 containing the residual fine powder 33 passes through the fine powder collecting bag filter 101, becomes the residual fine powder collecting gas 23 not containing the residual fine powder 33, and returns to the blower 1B.

FIG. 9 is a plan view of a bag filter for collecting fine powder in a comparative example.

The post-conveying gas introduction part 102, the residual fine powder collecting part 103, the fine powder collecting bag 103A, the residual fine powder collecting gas storage part 104, and the residual fine powder collecting gas exhaust part 105 that constitute the fine powder collecting bag filter 101. It is shown when viewed from above the positional relationship of the discharge portion 107 of the collected removing unit 106 and the removed residual fines residual fines.

As described above, the collected residual fine powder 34 is removed from the fine powder collection bag 103A by the pulse jet nozzle 106D, and settles as the removed residual fine powder 35 in the discharge portion 107 of the removed residual fine powder.

However, it may float on the residual fine powder collection unit 103 without settling, and reattach to the fine powder collection bag 103A. If the fine powder adhered again is not removed, the fine powder collecting bag 103A is clogged. If the charged fine powder 31 is continuously conveyed to the fine powder processing unit 3 in this state, the blower 1B, which is a supply source of the carrier gas 21, gradually increases in discharge pressure and generates heat, causing power up and tripping. This is described above in paragraph number 0005 of the background art.

In order to prevent this trip, as shown in FIG. 8, in order to reduce the residual fine powder 33 contained in the post-transport gas 22, the transport gas supply line 11 (the transport gas supply line downstream 11C) and the fine powder processing unit 3 In some cases, one or two cyclones 4 with centrifugal force are provided. However, there is a limit to the residual fine powder that can be collected by the cyclone. This is also described above in paragraph number 0008 of the background art.

Next, a fine powder collecting bag filter according to claim 1 of the present invention will be described with reference to FIGS.

FIG. 1 is a system diagram of fine powder conveyance including a sectional view of a fine powder collecting bag filter according to claim 1 of the present invention.

As shown in FIG. 1, the bag filter 101 for collecting fine powder is provided with a gas storage section partition 104A after collecting the residual fine powder in the direction from the top to the bottom after collecting the residual fine powder, that is, in the vertical direction. Yes. Thereby, the gas storage part 104 after residual fine powder collection can be divided | segmented.

And, for each divided residual fines collected after the gas accommodating section 104, providing an exhaust valve with residual fines collected after the gas exhaust part 105 C is an outlet for exhausting the residual fines collected after gas 23. The gas exhaust part 105 C after collecting the residual fine powder with the exhaust valve is provided with an exhaust valve 105A in addition to the gas exhaust part 105 after collecting the residual fine powder in the comparative example.

Thus, by opening / closing the exhaust valve 105A, whether or not the gas 23 after collection of the residual fine powder is exhausted to the post-conveyance gas return line downstream 12B for each of the divided gas storage sections 104 after collection of the residual fine powder. Can be determined.

The fine powder collection bag 103A under the residual fine powder collection gas storage section 104 provided with the exhaust valve 105A that is not closed collects the residual fine powder 33 because of the flow of the post-conveyance gas 22.

On the other hand, by closing the exhaust valve 105A, there is no flow of the gas 23 after collecting the residual fine powder in the gas storage portion 104 after collecting the residual fine powder provided with the closed exhaust valve 105A, and there is no fine powder collection thereunder. The vicinity of the bag 103A can also be in a state where there is no flow of the gas 22 after the conveyance.

Therefore, the fine powder collection bag 103A under the gas storage section 104 after the residual fine powder collection provided with the closed exhaust valve 105A is configured to pulse jet the collected residual fine powder 34 because there is no flow of the gas 22 after conveyance. It can be removed by the nozzle 106D.

From the above, the residual fine powder 34 that has been collected without tripping the blower 1B is removed by sequentially changing the gas storage unit 104 after collecting the residual fine powder that closes the exhaust valve 105A. Driving becomes possible.

FIG. 2 is a plan view of a fine powder collecting bag filter according to claim 1 of the present invention.

The post-conveying gas introduction unit 102, the residual fine powder collecting unit 103, the fine powder collecting bag 103A, the residual fine powder collecting gas storage unit 104, and the residual fine powder collecting post-gas storage partition constituting the fine powder collection bag filter 101 104A, a gas exhaust part 105 C after collecting the residual fine powder with an exhaust valve , an exhaust valve 105A, a removal part 106 of the collected residual fine powder, and a discharge part 107 of the removed residual fine powder are shown when viewed from above. .

By providing the gas container partition 104A after collecting the residual fine powder, the gas container 104 after collecting the residual fine powder is divided into four. Divided residual fines collected after the gas accommodating section 104 respectively, is provided with a gas exhaust part 105 C after with the exhaust valve residual fines collected having an exhaust valve 105A. All the exhaust gas-removed parts 105 C with exhaust valves are collected into one, and constitute a downstream gas return line 12B after conveyance.

Any number of the gas storage part partitions 104A may be provided after collecting the residual fine powder.

Further, the division of the gas storage unit 104 after collecting the residual fine powder may be made so that the number of the divided fine powder collection bags 103A is the same or different.

FIG. 2 shows a state in which the gas storage unit 104 after collecting the residual fine powder is divided into four parts.

From the above, the residual fine powder 34 that has been collected without tripping the blower 1B is removed by sequentially changing the gas storage unit 104 after collecting the residual fine powder that closes the exhaust valve 105A. Driving becomes possible.

Next, a fine powder collecting bag filter according to claim 2 of the present invention will be described with reference to FIGS.

FIG. 3 is a cross-sectional view of a fine powder collecting bag filter according to claim 2 of the present invention.

The fine powder collection bag filter 101 A with the residual fine powder collection part partition shown in FIG. 3 has a residual fine powder collection part partition 103B added to the fine powder collection bag filter 101 according to claim 1 shown in FIG. .

The residual fine powder collecting part partition 103B is provided so as to extend the gas containing part partition 104A after collecting the residual fine powder in the direction from the top to the bottom of the residual fine powder collecting part 103, that is, in the vertical direction.

The residual fine powder collection part partition 103B extends at least to the height of the bottom of the fine powder collection bag 103A, preferably to a height below the bottom of the fine powder collection bag 103A as shown in FIG.

FIG. 4 is a plan view of a fine powder collecting bag filter according to claim 2 of the present invention.

Constituting the remaining fines collector compartmentalized fines collecting bag filters 101 A, conveyance after the gas inlet 102, residual fines collector 103, fines collection bag 103A, residual fines collector partition 103B, capturing residual fines collecting the gas after container 104, after the residual fines collecting gas receiving part partition 104A, the exhaust valve with residual fines collected after the gas exhaust part 105 C, the exhaust valves 105A, trapped removing unit 106 and the removed residual fines residual fines The positional relationship of the discharge unit 107 is shown from the top.

As described above, since the residual fine powder collecting part partition 103B is an extension of the gas storage part partition 104A after collecting the residual fine powder, these are shown by the same broken line in FIG.

FIG. 4 shows a state in which the gas storage part 104 and the residual fine powder collecting part 103 after collecting the residual fine powder are divided into four parts by the gas storage part partition 104A and the residual fine powder collecting part partition 103B after the residual fine powder collection. Yes.

The meaning of the gas container partition 104A after collecting the residual fine powder will be described with reference to FIGS.

One area (for example, the left half of the gas storage section 104 after collecting the residual fine powder in FIG. 1, of the gas storage section 104 after collecting the residual fine powder divided by the bag filter 101 for collecting the fine powder according to claim 1, When the exhaust valve 105A connected to the gas container 104 after the collection of residual fine powder is closed, as described above, there is no flow of the gas 23 after collecting the residual fine powder in the gas container 104 after collecting the residual fine powder. In addition, the vicinity of the fine powder collection bag 103A underneath can be in a state where there is no flow of the gas 22 after conveyance. Therefore, the collected residual fine powder 34 is removed by the pulse jet nozzle 106D, and the removed residual fine powder 35 settles on the discharge portion 107 of the removed residual fine powder.

However, the other residual fine powder collecting gas storage section 104 (for example, the right half of the residual fine powder collecting gas storage section 104 in FIG. 1, the residual fine powder collecting gas storage section 104 in FIG. 2) that does not close the exhaust valve 105 </ b> A. In the fine powder collection bag 103A under the lower right), there is a flow of the gas 22 after conveyance. Therefore, the removed residual fine powder 35 may float and adhere to the fine powder collection bag 103A under the gas storage unit 104 after collecting the residual fine powder that has not closed the exhaust valve 105A.

On the other hand, as shown in FIGS. 3 and 4, the bag filter for collecting fine powder according to claim 2 accommodates gas after collecting the residual fine powder in the direction from the top to the bottom of the residual fine powder collecting portion 103, that is, in the vertical direction. The residual fine powder collecting part partition 103B is provided at least up to the height of the bottom of the fine powder collecting bag 103A so as to extend the part partition 104A.

Of the divided residual fine powder collecting gas storage section 104, in one area (for example, the left half of the residual fine powder collecting gas storage section 104 in FIG. 3, the lower left of the residual fine powder collecting gas storage section 104 in FIG. 4). When the connected exhaust valve 105A is closed, another residual fine powder collecting gas storage unit 104 (for example, the right half of the residual fine powder collecting gas storage unit 104 of FIG. The fine powder collection bag 103 </ b> A under the residual fine powder collecting gas storage unit 104 (bottom right) has a post-conveyance gas 22 flow.

However, since the residual fine powder collecting part partition 103B is provided at least up to the height of the bottom of the fine powder collecting bag 103A, the removed residual fine powder 35 does not close the exhaust valve 105A. It will not adhere to the underlying fine powder collection bag 103A.

From the above, it is possible to perform continuous operation without tripping the blower 1B as compared with the fine powder collecting bag filter according to claim 1.

Finally, a fine powder collecting bag filter according to claim 3 of the present invention will be described with reference to FIGS.

FIG. 5 is a sectional view of a bag filter for collecting fine powder according to claim 3 of the present invention.

The fine powder collection bag filter 101 shown in FIG. 5 is the fine powder collection bag filter 101 according to claim 1 shown in FIG. 1, and the exhaust valve 105A is an automatically controlled exhaust valve 105B.

FIG. 6 is a cross-sectional view of another embodiment of the bag filter for collecting fine powder according to claim 3 of the present invention.

The fine powder collecting bag filter 101 A with the residual fine powder collecting part partition shown in FIG. 6 is the same as the exhaust valve 105A in the fine powder collecting bag filter 101 A with the residual fine powder collecting part partition according to claim 2 shown in FIG. Is an automatically controlled exhaust valve 105B.

FIG. 7 is a plan view of a fine powder collecting bag filter according to claim 3 of the present invention.

The post-conveying gas introduction part 102, the residual fine powder collecting part 103, the fine powder collecting bag 103A, the residual fine powder collecting part partition 103B, the residual fine powder collecting gas storage part 104, and the residual constituting the fine powder collecting bag filter 101 Position of the gas storage part partition 104A after collection of fine powder, the gas exhaust part 105 C after collection of residual fine powder with an exhaust valve , the automatic control exhaust valve 105B, the removal part 106 of the collected residual fine powder and the discharge part 107 of the removed residual fine powder The relationship is shown from the top.

The bag filter 101 for collecting fine powder according to claim 3 uses the exhaust valve 105A as an automatically controlled exhaust valve 105B so that the removal time of the collected residual fine powder 34 can be set.

The automatic control exhaust valve 105B is preferably a solenoid valve, but may be an air operated valve.

The removal time of the collected residual fine powder 34 is set by a control device not described in FIGS.

Thereby, the residual fine powder 34 collected according to the number of the fine powder collection bags 103A, the amount of the collected residual fine powder 34, etc. The removal time can be set. In addition, the removal time can be set to be long in order to reliably remove the collected residual fine powder 34, or the removal time can be set to be short in order to increase the availability of the bag filter 101 for collecting fine powder.

By providing an opening / closing function of the automatic control exhaust valve 105B in the control device, the automatic control exhaust valve 105B can be opened and closed according to the removal time of the collected residual fine powder 34 described above.

The control device is preferably a sequencer, but may be a control panel including a relay, a timer, a switch, and the like.

From the above, it is possible to perform continuous operation without tripping the blower 1B and continuous operation with improved operating rate than the fine powder collecting bag filter according to claim 1 or 2.

DESCRIPTION OF SYMBOLS 1 Transfer gas supply part 1A Transfer gas supply port 1B Blower 2 Fine powder input part 3 Fine powder processing part 4 Cyclone 11 Transfer gas supply line 11A Transfer gas supply line upstream 11B Transfer gas supply line middle stream 11C Transfer gas supply line downstream 12 Returned gas after transfer Line 12A Gas return line upstream after transport 12B Gas return line downstream after transport 21 Carrier gas 22 Gas after transport 23 Residual fine powder collected gas 31 Input fine powder 32 Processed fine powder 33 Residual fine powder 34 Collected residual fine powder 35 Removed residual fine powder 101 Bag filter for collecting fine powder
101A Residual Fine Powder Collection Part Partitioned Fine Powder Collection Bag Filter 102 Post-Transport Gas Introduction Part 103 Residual Fine Powder Collection Part 103A Fine Powder Collection Bag 103B Residual Fine Powder Collection Part Partition 104 Residual Fine Powder Collected Gas Storage Part 104A Residual Fine Powder Gas storage part partition 105 after collection Gas exhaust part 105A exhaust valve 105B Automatic control exhaust valve after collecting residual fine powder
Removing portions 106A gas chamber 106B electromagnetic valve 105C exhaust valve with residual fines collected after the gas exhaust unit 106 trapped residual micronized 106C gas pipe 106D pulse jet nozzle 107 discharge portion of the removed residual fines

Claims (1)

A carrier gas is circulated between a carrier gas supply unit having a carrier gas supply source, a carrier gas supply line, a fine powder processing unit, and a post-transport gas return line , and a centrifugal force is generated between the carrier gas supply line and the fine powder processing unit. the cyclone twist provided in fines transported to the fines processing unit a line from the discharge portion of the residual fines later removed Ru is combined to the carrier gas feed line, in order to collect the residual fines from the transport gas after, A pressurized air chamber separate from the post-conveyance gas introduction unit, the residual fine powder collection unit having the fine powder collection bag, the residual fine powder collection gas storage unit, the residual fine powder collection gas exhaust unit, and the carrier gas supply source In a bag filter for collecting fine powder comprising a removed portion of collected residual fine powder that removes the collected residual fine powder and a discharge portion of removed residual fine powder,
After collecting the residual fine powder, the gas storage section is provided with a vertical partition to divide the gas storage section after collecting the residual fine powder, and the residual fine powder collection having an exhaust valve for each of the divided residual fine powder collection gas storage sections. After the collection of residual fine powder , the rear gas exhaust section is closed and the exhaust valve is closed, and the gas storage section is sequentially changed to remove the collected residual fine powder without tripping the carrier gas supply source, enabling continuous operation. A bag filter for collecting fine powder.