CN111773838A - Pulse blowing dust remover - Google Patents
Pulse blowing dust remover Download PDFInfo
- Publication number
- CN111773838A CN111773838A CN202010792838.4A CN202010792838A CN111773838A CN 111773838 A CN111773838 A CN 111773838A CN 202010792838 A CN202010792838 A CN 202010792838A CN 111773838 A CN111773838 A CN 111773838A
- Authority
- CN
- China
- Prior art keywords
- pulse
- box body
- blowing
- dust
- dust remover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000428 dust Substances 0.000 title claims abstract description 93
- 238000007664 blowing Methods 0.000 title claims abstract description 49
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 abstract description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 50
- 238000004140 cleaning Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012716 precipitator Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/06—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material with means keeping the working surfaces flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
Abstract
The invention discloses a pulse blowing dust remover which comprises a dust remover body, a truss, a blowing device, a filtering device and a PLC (programmable logic controller) control system, wherein the dust remover body comprises an upper box body, a middle box body and an ash bucket at the lower part; a pattern plate is arranged between the upper box body and the middle box body; the middle box body is provided with a dust inlet, the blowing device comprises an air bag assembly, a pressure reducing valve, a blowing main pipe and a pulse instrument, the air bag assembly is arranged outside the dust remover body, the air bag is provided with an air inlet communicated with a blowing pipe in the upper box body through a communicating pipe, and the air bag is provided with a straight-through pulse valve connected with the pulse instrument. The invention has the beneficial effects that: the structure is simple, and the maintenance is convenient; the dust removal effect is obviously improved, and the failure rate is reduced; the service life of the dust removal filter bag is prolonged.
Description
Technical Field
The invention belongs to the technical field of dust removal and cleaning, and particularly relates to a pulse blowing dust remover. Is used for port bulk grain operation.
Background
In the prior dust removal system for bulk grain operation, a British Calvis dust removal system is adopted, the cleaning and blowing modes of the system are both driven by a motor to rotate, and a blowing period is triggered by pneumatic control elements such as an excitation valve, a two-position three-way valve, a pneumatic delayer, a pneumatic back-blowing valve and the like. The system has the advantages of multiple pneumatic element control links, high failure rate and high maintenance frequency. And the pneumatic control element part needs to use imported fittings, so that the fittings cost is high, and the supply period is unstable. The blowing effect is not good and the dust removal effect is directly influenced.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a pulse-jet dust collector, which uses a novel pulse-jet bag-type dust-collecting cleaning system in a currently operating dust collector, so as to improve the dust-collecting effect and reduce the failure rate.
In order to solve the technical problems, the invention adopts the technical scheme that: a pulse blowing dust remover comprises a dust remover body, a truss, a blowing device, a filtering device and a PLC control system, wherein the dust remover body comprises an upper box body, a middle box body and an ash bucket at the lower part; a pattern plate is arranged between the upper box body and the middle box body; the dust collector comprises a dust collector body, a middle box body and a blowing device, wherein the middle box body is provided with a dust inlet, the blowing device comprises an air bag assembly, a pressure reducing valve, a blowing pipe and a pulse instrument, the air bag assembly is arranged outside the dust collector body, the air bag is provided with an air inlet which is communicated with the blowing pipe in the upper box body through a communicating pipe, the air bag is provided with a through type pulse valve, and the through type pulse valve is connected with the pulse instrument.
The filtering device is positioned in the middle box body, the filter bag is fixed on the pattern plate through the filter bag framework, and a plurality of holes are formed in the pattern plate and correspond to the injection branch pipes connected with the injection pipes.
The end part of the blowing branch pipe is provided with a venturi.
The air bag is provided with a plurality of air inlet channels with straight-through pulse valves to the upper box body.
The PLC adopts two control modes of differential pressure or pulse instrument timing.
The upper box body is provided with a top cover, so that the filter bag framework can be conveniently drawn out.
The invention has the beneficial effects that:
1) the low-pressure pulse blowing technology is adopted, so that the ash removal efficiency is high, and the energy consumption is low. A straight-through solenoid pulse valve is used. The blowing pressure is only 0.5-0.7 MPa, the resistance is low, the opening and closing are quick, and the ash removal capacity is strong. Because the ash removal effect is good, the ash removal period is long, and the energy consumption of back flushing gas is reduced.
2) The air duct is arranged by adopting a collecting pipe, and the structure is compact.
3) The whole operation process of the dust removing equipment is realized by adopting an advanced PLC (programmable logic controller). The pressure difference or timing control mode is used, the reliability is high, the service life is long, and the operation and the use of a user are facilitated.
4) The straight-through electromagnetic pulse valve has long service life and good reliability. The pressure born by the pulse valve membrane and the impact force during opening and closing are lower, and simultaneously, because the ash removal period is longer, the opening times of the pulse valve are correspondingly reduced, so that the service life of the pulse valve is prolonged, and the use reliability of the pulse valve is improved.
5) The equipment has small running resistance and good blowing effect. The dust remover adopts the off-line deashing mode of pulse back blowing at the upper box, has avoided the phenomenon that the dust is adsorbed repeatedly, has improved the effect of pulse jetting deashing, has reduced the sack resistance.
6) The filter bag is convenient to assemble and disassemble and reliable to fix. By adopting the upper part drawing and installing mode, when the bag is replaced, the filter bag framework is drawn out from the upper box body of the dust remover, the dirty bag is put into the ash bucket and taken out from the inlet hole of the ash bucket, and the bag replacing environment is improved. The elastic piston ring of the filter bag close to the bag opening is fixed on the plate hole, the fixation is firm, and the sealing performance is good.
In conclusion, the current environmental protection and safety requirements are met; the dust removal effect is obviously improved, and the failure rate is reduced; the service life of the dust removal filter bag is prolonged.
Drawings
FIG. 1 is a schematic front view of the external appearance of a dust collector of the present invention;
FIG. 2 is a schematic side view of the external appearance of the dust collector of the present invention;
FIG. 3 is a schematic top view of the external appearance of the dust collector of the present invention;
FIG. 4 is a schematic view of an air bag assembly of the precipitator of the present invention;
FIG. 5 is a side schematic view of FIG. 4;
FIG. 6 is a schematic view of a communicating tube of the dust collector of the present invention;
FIG. 7 is a schematic view of a faceplate of the duster of the present invention;
FIG. 8 is a schematic view of a blowing tube of the precipitator of the present invention;
FIG. 9 is a schematic view of the connection of the main pipe of the blowing pipe and the branch pipe;
FIG. 10 is a schematic view showing the usage state of the filter bag frame of the dust collector of the present invention.
In the figure:
1. dust remover body 2, truss 3, cat ladder and platform
4. Air bag assembly 5, pressure reducing valve 6 and pulse instrument
7. Ash bucket 8, blowing branch pipe 9 and blowing main pipe
10. Communicating pipe 11, filter bag framework 12 and pulse valve
13. Injection pipe connecting piece 14, pattern plate 15 and venturi
16. Water drain valve 17, air bag 18, air inlet pipe
20. Connecting pipe connecting piece 21 and blowing pipe support
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
as shown in fig. 1 to 10, a pulse blowing dust collector mainly comprises a dust collector body, a truss, an ash bucket, a middle box body, an upper box body, a blowing device, an inlet and outlet air pipe and a PLC control system, wherein a ladder and a platform are arranged outside the dust collector body. The dust remover body comprises an upper box body, a middle box body and an ash bucket at the lower part; a pattern plate is arranged between the upper box body and the middle box body; the middle box body is provided with a dust inlet, the blowing device comprises an air bag assembly, a pressure reducing valve, a blowing main pipe and a pulse instrument, the air bag assembly is arranged outside the dust remover body, the air bag is provided with an air inlet communicated with a blowing pipe in the upper box body through a communicating pipe, and the air bag is provided with a straight-through pulse valve connected with the pulse instrument. The filtering device is positioned in the middle box body, the filter bag is fixed on the pattern plate through the filter bag framework, and a plurality of holes are arranged on the pattern plate and correspond to the blowing branch pipes connected with the blowing main pipe.
The pulse controller control system is used for pulse ash removal and can adopt preset time or pressure difference to control pulse. The pulse controller system controls the operation of the electromagnetic pulse valve, and compressed air is used for dedusting and deashing, and the control mode is online control.
Set up a gas bag in the dust remover outside, the jetting pipe adopts the straight line, adopts eleven jetting pipes, changes supporting novel card, the cloth bag of being convenient for arrange and the blowback, and the pulse solenoid valve is installed additional to the gas bag output, through the wire with solenoid input pulse signal in the solenoid valve body, the pulse valve receives pulse jetting control instrument output signal's control, relies on the pressure variation of two air chambers around the valve, makes the rubber diaphragm warp and warp the opening and closing that realize the pulse valve. The diameter of the rubber diaphragm determines the stroke size of the rubber diaphragm and the opening and closing speed, the larger the diameter of the diaphragm is, the larger the stroke is, and the better the blowing performance is. The venturi tube is added on the head of the filter bag framework, and the working principle is that when air flow blows over the obstacle, the air pressure near the port above the lee side of the obstacle is relatively low, so that adsorption is generated and the air flow is guided. The air flow is uniformly distributed from thick to thin to accelerate the air flow velocity, so that the air forms a vacuum area at the rear side of the venturi outlet. Secondary airflow may be induced. When the filter bag in the dust remover is used for removing dust, secondary air which is 5-8 times of the injected compressed air is induced to enter the filter bag of the dust remover when high-speed air flow passes through the venturi tube, so that the dust removing filter bag is instantaneously and rapidly expanded, and dust accumulated on the filter bag of the dust remover falls off due to the reverse action of the air flow of the dust remover. The venturi tube greatly improves the pulse blowing strength and effect, reduces the consumption of compressed air and saves energy. And a pulse controller is additionally arranged at the lower part of the tank body to control the action of the pulse electromagnetic valve, and the blowing frequency is set according to the parameters of the pulse width, the period interval and the period interval of the controller. The explosion-proof plate adopts mainstream rupture disk, and the material is the stainless steel, through holder and jar body fixed connection, and is more firm, not fragile, safe and reliable.
The back-blowing working pressure of the pulse back-blowing air source of the dust remover is as follows: 0.4-0.6 Mpa, working medium: no corrosive medium exists in the ambient air; gas source medium: the temperature is less than 55 ℃, and the filtration precision is less than 5 mu m and the pressure is adjustable for clean gas after oil removal and water treatment; the use environment is as follows: temperature: 55-180 ℃ at the temperature of-25-55 ℃, and the relative humidity of air is not more than 80%; the air compressor model selection pressure is 0.8Mpa, and the air displacement is about 20% more than the air consumption of the dust remover.
The main pipe of the air inlet pipe is determined according to the number of the dust collectors, the more the number of the dust collectors is, the larger the pipe diameter is, the branch pipe is divided into 4 parts, and an air valve is additionally arranged in front of an air inlet connector of the dust collector.
The working principle of the pulse blowing dust remover is as follows:
when the dust-containing gas enters the dust remover from the air inlet, the dust-containing gas firstly touches the inclined plate and the baffle plate in the middle of the air inlet and the air outlet, the airflow turns to flow into the ash bucket, and simultaneously the airflow speed is slowed down, so that coarse particle dust in the gas directly flows into the ash bucket due to the inertia effect, and the dust is pre-collected. The air flow entering the dust hopper is then folded upwards to pass through a filter bag with a metal framework inside, the dust is trapped on the outer surface of the filter bag, the purified gas enters a cleaning chamber at the upper part of a filter bag chamber and is collected to an air outlet to be discharged, the dust-containing gas is accumulated on the filter bag more and more along with the increase of time in the process of purifying the filter bag, the resistance of the filter bag is increased, so that the air volume for treatment is gradually reduced, for normal work, the filter bag needs to be cleaned by controlling the resistance within the range of 140 plus 170 mm water column, each control valve is sequentially triggered by a pulse controller to open a pulse valve during cleaning, the compressed air in the air bag is sprayed into each corresponding filter bag through each hole venturi tube by a spray pipe, the filter bag is expanded instantly, the dust accumulated on the surface of the filter bag falls off, and the filter bag is. The dust falls into the dust hopper and is discharged out of the machine body through the dust discharging system. Therefore, dust accumulated on the filter bag is periodically and pulse-sprayed to remove ash, purified gas normally passes through the filter bag, and the operation of a dust removal system is ensured.
The filtration principle is as follows:
dust-containing gas enters from the air inlet, and when the dust-containing gas passes through the dust hopper, part of large-particle dust in the gas is separated out under the action of inertia force and directly falls into the dust hopper. The dust-containing gas enters the filter area of the filter bag of the box body after passing through the dust hopper, the gas passes through the filter bag, and the dust is blocked on the outer surface of the filter bag. The purified gas enters the upper box body through the filter bag opening and is discharged from the air outlet.
Principle of ash removal
Along with the extension of the filtering time, the dust layer on the filter bag is continuously accumulated and thick, the resistance of the dust removing equipment is continuously increased, and when the resistance of the equipment is increased to a set value, the dust removing device starts to remove dust. The electromagnetic pulse valve is opened, compressed air rapidly expands in the upper box body in a very short time and then flows into the filter bag, so that the filter bag expands and deforms to generate vibration, and dust attached to the outer surface of the filter bag is stripped and falls into the dust hopper under the action of reverse airflow scouring. After the ash is removed, the electromagnetic pulse valve is closed, and the chamber is returned to normal filtering state. The ash removal of each chamber is carried out in sequence, and one ash removal period is from the ash removal of the first chamber to the ash removal of the next chamber.
Claims (6)
1. A pulse blowing dust remover comprises a dust remover body, a truss, a blowing device, a filtering device and a PLC control system, wherein the dust remover body comprises an upper box body, a middle box body and an ash bucket at the lower part; a pattern plate is arranged between the upper box body and the middle box body; the middle box body is provided with a dust inlet, and is characterized in that: the blowing device comprises an air bag assembly, a pressure reducing valve, a blowing main pipe and a pulse instrument, wherein the air bag assembly is arranged outside the dust remover body and comprises an air bag and a through type pulse valve, an air inlet arranged on the air bag is communicated with a blowing pipe in the upper box body through a communicating pipe, and the through type pulse valve is connected with the pulse instrument.
2. The pulse-jet dust collector as claimed in claim 1, wherein: the filtering device is positioned in the middle box body, the filter bag is fixed on the flower plate through the filter bag framework, and a plurality of holes are formed in the flower plate and correspond to the blowing branch pipes connected with the blowing main pipe.
3. The pulse-jet dust collector as claimed in claim 2, wherein: the end part of the blowing branch pipe is provided with a venturi.
4. The pulse-jet dust collector as claimed in claim 1, wherein: the air bag is provided with a plurality of air inlet channels with straight-through pulse valves to the upper box body.
5. The pulse-jet dust collector as claimed in claim 1, wherein: the PLC adopts two control modes of differential pressure or pulse instrument timing.
6. The pulse-jet dust collector as claimed in claim 1, wherein: the upper box body is provided with a top cover, so that the filter bag framework can be conveniently drawn out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010792838.4A CN111773838A (en) | 2020-08-07 | 2020-08-07 | Pulse blowing dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010792838.4A CN111773838A (en) | 2020-08-07 | 2020-08-07 | Pulse blowing dust remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111773838A true CN111773838A (en) | 2020-10-16 |
Family
ID=72761767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010792838.4A Pending CN111773838A (en) | 2020-08-07 | 2020-08-07 | Pulse blowing dust remover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111773838A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022082823A1 (en) * | 2020-10-25 | 2022-04-28 | 山东舜鹏建材有限公司 | Pulse-jet cloth-bag-type precipitator for use in stabilized soil production |
-
2020
- 2020-08-07 CN CN202010792838.4A patent/CN111773838A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022082823A1 (en) * | 2020-10-25 | 2022-04-28 | 山东舜鹏建材有限公司 | Pulse-jet cloth-bag-type precipitator for use in stabilized soil production |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201016 |