CN211274099U - Cyclone type filter bag dust removal device and dust removal system - Google Patents

Cyclone type filter bag dust removal device and dust removal system Download PDF

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Publication number
CN211274099U
CN211274099U CN201922288681.7U CN201922288681U CN211274099U CN 211274099 U CN211274099 U CN 211274099U CN 201922288681 U CN201922288681 U CN 201922288681U CN 211274099 U CN211274099 U CN 211274099U
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dust
filter bag
cyclone
cylinder
filter
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CN201922288681.7U
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刘潇仪
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Jinan Yuefeng Energy Technology Co ltd
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Jinan Yuefeng Energy Technology Co ltd
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Abstract

The application discloses a whirlwind formula filter bag dust collector and dust pelletizing system has been synthesized cyclone and the two advantage of sack cleaner, adopt trapezoidal tangential air inlet, tail gas forms the whirl between cyclone bag filter dust collector outer wall and inner tube, in, on the interface of outer whirl, the centrifugal force that tangential velocity produced is greater than the centripetal force that radial velocity produced, most dust is removed to the outer wall under inertial centrifugal force's promotion, because of producing frictional resistance with the wall and being separated out, be favorable to reducing filter bag filtration load, filtration efficiency has been improved and filter bag life has been prolonged, dirty gas continues to remove dust through the filter bag secondary, the exhaust emission concentration of the exhaust cyclone bag filter dust collector is less than the emission concentration that national standard required.

Description

Cyclone type filter bag dust removal device and dust removal system
Technical Field
The application relates to a cyclone filter bag dust removal device and a dust removal system.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The cyclone dust collector is a dry gas-solid separation device which separates dust from an air flow by using centrifugal force generated by rotating dust-containing gas. Cyclone dust collectors have been used for centuries since the industrial production. The separation equipment has simple structure, easy manufacture, low cost and operation cost, and high purification efficiency for collecting and separating coarse particle dust of more than 5-10 μm, so the separation equipment is widely applied to the departments of mines, metallurgy, refractory materials, building materials, coal, chemical industry and electric power industry. However, since the cyclone dust collector has a low purification efficiency for relatively fine dust particles (particularly, fine dust particles having a low density) of 5 to 10 μm or less, the cyclone dust collector is generally used for purification of coarse dust particles or for preliminary treatment in multi-stage purification.
The bag-type dust collector is a high-efficiency dust-collecting equipment which utilizes organic fiber or inorganic fiber filter cloth (also called filter material) to separate solid dust in dust-containing gas by filtration (complement collection). The filter material is also called bag-type dust collector because the filter material is mostly made into a bag shape. Bag houses are widely used in various industrial sectors to supplement non-cementitious, non-fibrous industrial dust. The bag type dust collector has higher dust collection efficiency, and if the filter cloth is properly selected and structurally designed, the dust collection efficiency can reach 99 percent generally. If sufficient attention is given during design and management, the dust removal efficiency can not reach more than 99.9 percent easily, dust with different properties can be supplemented, and the influence on the dust removal efficiency and the resistance is not great when the dust concentration at the inlet is changed in a quite large range. The bag-type dust collector is flexible to use, the air handling capacity can be from hundreds of cubes to tens of thousands of cubic meters, and the bag-type dust collector can be made into a small unit directly installed indoors and also can be made into a large dust collector chamber. When the air quantity is large, the bag-type dust collector occupies a large area and has high manufacturing cost.
The inventor finds that although the cyclone dust collector is suitable for collecting and separating coarse particle dust and has high purification efficiency, the cyclone dust collector has low purification efficiency for fine particle dust with particle size of 5-10 mu m or less and the dust concentration of the discharged dust is far higher than the national standard; although the bag type dust collector can be used as secondary dust collection equipment to effectively supplement and collect fine particle dust, the purification efficiency is high, when the large air volume is processed, the occupied area and the manufacturing cost are high; therefore, the two methods are difficult to meet the requirements of high purification efficiency, good dust removal effect and control of low-particle-size particle dust.
Disclosure of Invention
The utility model aims at the defects that prior art exists, a whirlwind formula filter bag dust collector and dust pelletizing system are provided, the two advantage of whirlwind dust remover and sack cleaner has been synthesized, adopt trapezoidal tangential air inlet, tail gas forms the whirl between whirlwind formula bag filter dust remover outer wall and inner tube, in, on the interface of outer whirl, the centrifugal force that tangential velocity produced is greater than the centripetal force that radial velocity produced, most dust removes to the outer wall under inertial centrifugal force's promotion, because of producing frictional resistance with the wall and being separated, be favorable to reducing the filter bag and filter the load, filtration efficiency has been improved and filter bag life has been prolonged, dirty gas continues to remove dust through the filter bag secondary, the exhaust emission concentration of the exhaust whirlwind formula bag filter dust remover is less than the emission concentration that national standard required.
The first purpose of this application is to provide a whirlwind formula filter bag dust collector, adopts following technical scheme:
including cyclone, cyclone includes intake pipe, dust removal chamber and the blast pipe that communicates according to this, cyclone's blast pipe department installs filter bag dust removal mechanism, filter bag dust removal mechanism includes card, fossil fragments and filter bag, the filter bag corresponds the cover and establishes on fossil fragments, and the fossil fragments that the cover was equipped with the filter bag correspond and install each hole at the card, the card is fixed on the blast pipe inner wall, and dusty gas gets into the dust removal chamber through the intake pipe and removes dust once, and dusty gas wears filter bag dust removal mechanism and carries out secondary dust removal, then discharges the gas after the purification through the blast pipe.
Further, cyclone include urceolus and the inner tube of coaxial setting, the top shutoff of urceolus, the lower extreme intercommunication has a toper section of thick bamboo, forms an annular cavity between inner tube and the urceolus, and the one end that the urceolus was kept away from to the toper section of thick bamboo is equipped with the bin outlet for the dust discharges, urceolus and the inside dust removal chamber that forms jointly of toper section of thick bamboo, inner tube upper portion intercommunication blast pipe, lower part intercommunication dust removal chamber.
Further, the air inlet pipe is installed on the side wall of the outer barrel, and the axis of the air inlet pipe is collinear with the tangent line of the outer barrel.
Further, be provided with guiding device on the toper section of thick bamboo inner wall for the large granule dust of preliminary sedimentation.
Furthermore, the filter bag extends into the dust removal cavity and keeps a distance with the dust removal cavity.
Furthermore, a protective net is arranged in the dust removal cavity and used for isolating the filter bag from a discharge port at the lower end of the dust removal cavity.
Furthermore, the injection mechanism is installed on the pattern plate and correspondingly arranged at an opening at the top end of each filter bag, and is used for outputting high-pressure airflow to perform back blowing on the interior of each filter bag so as to enable dust on the outer surface of each filter bag to fall.
Furthermore, the injection mechanism comprises an electromagnetic valve, an injection air bag and an injection tube which are sequentially communicated, the injection tube is provided with air injection holes corresponding to the openings of the plurality of filter bags, and the electromagnetic valve is connected to an external air source and used for controlling the output and the stop of the injection tube.
Further, the exhaust pipe is also matched with an air outlet cover, and the exhaust pipe is communicated with the dust removal cavity through the air outlet cover.
It is a second object of the present application to provide a dust extraction system comprising a cyclone-type filter bag dust extraction apparatus as described above.
Compared with the prior art, the application has the advantages and positive effects that:
(1) the improved spiral-flow type bag filter dust remover has high integration level, has the advantages of two dust removing devices, namely a cyclone dust remover and a bag dust remover, can simultaneously purify and separate thicker and thinner dust particles in dust-containing gas with high efficiency, has high dust removing efficiency, and discharges tail gas which meets the existing environmental protection requirement after primary dust removal;
(2) the structure that the filter bag type dust collector is embedded into the cyclone type dust collector is adopted, so that the structure is smaller, the cyclone type dust collector capable of bearing large-particle dust collection is adopted firstly to realize primary dust collection and filtration, and then the filter bag type dust collector capable of bearing finer-particle dust collection is adopted, so that the dust collection efficiency is improved, the dust collection effect is ensured, and dust particles with large particle size and small particle size can be filtered at one time;
(3) compared with the prior primary cyclone dust removal and secondary cloth bag dust removal processes, the improved cyclone bag filter dust remover has the advantages of low equipment investment and small occupied area; for some system dust removal process modification projects, the improved cyclone bag filter dust remover has mature dust removal process route and technology, no risk and short modification period.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic view of the overall structure of a cyclone filter bag dust collector in embodiment 1 of the present application.
The device comprises an air outlet cover 1, an air outlet 2, a blowing air bag 3, an electromagnetic valve 4, an air inlet 5, an outer cylinder 6, an access hole 7, a blowing pipe 8, a pattern plate 9, a Venturi tube 10, an inner cylinder 11, a filter bag 12, a heat insulation layer 13, a keel 14, a conical cylinder 15, a heat tracing coil 16, a cleaning hole 17, a discharge hole 18 and a vibrator 19.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate that the directions of movement are consistent with those of the figures themselves, and are not limiting in structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting in this application.
As introduced in the background art, although the cyclone dust collector in the prior art is suitable for collecting and separating the dust with relatively coarse particles and has high purification efficiency, the cyclone dust collector has low purification efficiency for the dust with relatively fine particles below 5-10 μm, and the dust concentration of the discharged dust is far higher than the national standard; although the bag type dust collector can be used as secondary dust collection equipment to effectively supplement and collect fine particle dust, the purification efficiency is high, when the large air volume is processed, the occupied area and the manufacturing cost are high; therefore, the two are difficult to satisfy the current demand that purification efficiency is high, dust removal effect is good, control low particle size granule dust, to above-mentioned technical problem, this application has proposed a whirlwind formula filter bag dust collector and dust pelletizing system.
Example 1
In an exemplary embodiment of the present application, as shown in fig. 1, a dust removing system with a cyclone-type filter bag dust removing apparatus is provided.
The utility model provides a dust pelletizing system installs spiral-flow type bag dust remover, includes equipment body, filter equipment, jetting device, rapping device, companion's heat facility and equipment auxiliary, and filter equipment installs inside the equipment body, and jetting device installs on equipment body upper portion, and rapping device installs in the equipment body lower part outside, and companion's heat facility installs in the equipment body outside, and equipment auxiliary installs on the equipment body.
The equipment body comprises a cyclone dust collector, the cyclone dust collector comprises an air inlet pipe, a dust removal cavity and an exhaust pipe which are communicated in sequence, a filter bag dust removal mechanism is installed at the exhaust pipe of the cyclone dust collector, the filter bag dust removal mechanism comprises a pattern plate 9, a keel 14 and a filter bag 12, the filter bag is correspondingly sleeved on the keel, the keel sleeved with the filter bag is correspondingly installed in each hole of the pattern plate, the pattern plate is fixed on the inner wall of the exhaust pipe, dust-containing gas enters the dust removal cavity through the air inlet pipe for primary dust removal, the dust-containing gas penetrates through the filter bag dust removal mechanism for secondary dust removal, and then the purified gas is discharged through the exhaust pipe;
the air inlet 5 of the trapezoidal air inlet pipe is used for tangentially feeding air, the gas to be dedusted forms rotational flow between the outer wall of the deduster and the inner cylinder, the centrifugal force generated by the tangential speed is larger than the centripetal force generated by the radial speed on the interface of the inner rotational flow and the outer rotational flow, most of dust moves towards the outer wall under the pushing of the inertial centrifugal force and is separated out due to the friction resistance with the wall surface, the filtering load of the filter bag is favorably reduced, the filtering efficiency is improved, the service life of the filter bag is prolonged, the dust-containing gas continues to be secondarily dedusted by the filter bag, and the exhaust concentration of the tail gas discharged from the rotational flow type bag deduster is lower.
The structure that adopts filter bag dust collector embedding cyclone for its structure is littleer, adopts the cyclone that can bear the large granule dust removal earlier, realizes once removing dust and filters, then adopts the filter bag dust collector that bears the dust removal of finer granule, has guaranteed the effect of removing dust when improving its dust collection efficiency, makes the dust particle homoenergetic of large particle size, small particle size once only filter.
Further, the equipment body comprises a conical barrel 15 positioned at the lower part, an outer barrel 6 positioned at the middle part and an air outlet cover 1 positioned at the upper part;
the outer cylinder in the middle is cylindrical, a cylindrical inner cylinder 11 is additionally arranged in the outer cylinder, a trapezoidal rotary air channel is formed by the outer cylinder and the inner cylinder, and an air inlet of the air channel adopts tangential air inlet;
the conical cylinder is provided with an air flow uniform distribution device, so that air flow uniformly enters each air chamber and is uniformly distributed; the conical cylinder is internally provided with a flow guide device, plays a role in pre-settling high-temperature large-particle dust, reducing abrasion to the filter bag and preventing bag falling in the installation, maintenance and operation processes, and is provided with a filter bag falling prevention net to avoid motor stall and burnout caused by the fact that a discharge valve is blocked due to falling of the filter bag;
preferably, a certain space is left between the conical cylinder and the bottom of the filter bag, so that the gas velocity rising to the area is instantly reduced and rapidly diffused, and the phenomenon of uneven filtering burden of the filter bag in the same chamber is prevented.
The air outlet cover is communicated with a dust removal cavity formed by the outer barrel and the conical barrel, receives air flow in the dust removal cavity and outputs the air flow through the exhaust pipe.
Furthermore, the equipment body is made of corrosion-resistant materials, and the surface of the material in contact with the materials is a light sectioning plate, so that dust is prevented from hanging on the wall; the equipment body is provided with an electrostatic lap joint for guiding static electricity generated in the dust removal process into the ground.
Further, for the filter bag dust removal mechanism, a pressure difference meter is arranged at the upper position and the lower position of the pattern plate 9 so as to monitor the running state of the dust remover in real time; the filter bag 12 adopts a water-proof, oil-proof and static-proof film-coated three-proofing filter bag to effectively prevent dust electrostatic adsorption and process dust gas with high moisture content under the extreme condition; the keel 14 adopts a 12-rib double-section structure, so that the equipment maintenance space is reduced, the fitting degree of the filter bag 12 and the keel 14 is ensured to the maximum extent, and the service life of the filter bag 12 is prolonged; the upper end of the keel 14 is provided with a venturi tube 10 structure to generate secondary induced air and improve ash removal kinetic energy.
Specifically, the injection device comprises an electromagnetic valve 4, an injection air bag 3 and an injection pipe 8 which are sequentially communicated; the injection pipe is provided with air injection holes corresponding to the openings of the filter bags, and the electromagnetic valve is connected to an external air source and used for controlling the output and stop of the injection pipe;
the caliber of the nozzle of the injection tube 8 is reasonably adjusted to flow uniformly and inject a compressed air source, so that the ash removal effect of 2-3 times can be achieved on the premise of the same compressed air consumption, and the mouth of the filter bag 12 is effectively protected from being damaged.
Compared with the prior primary cyclone dust removal and secondary cloth bag dust removal processes, the improved cyclone bag filter dust remover has the advantages of low equipment investment and small occupied area; for some system dust removal process modification projects, the improved cyclone bag filter dust remover has mature dust removal process route and technology, no risk and short modification period.
Further, the rapping device is a rapper 19; the heat tracing device comprises a heat tracing coil pipe 16 and a heat insulation layer 13, the heat tracing coil pipe is wound on the tapered cylinder wall, and the heat insulation layer covers the outer wall of the outer cylinder.
Preferably, the heat medium flowing through the heat tracing coil 16 may be hot water, steam, high temperature gas, or heat conducting oil.
Preferably, the equipment accessories include but not limited to access hole 7, clearance hole 17, rapping apparatus 19, the access hole is arranged on the air-out cover, makes things convenient for the maintenance of air-out cover position annex component, clearance hole and rapping apparatus both arrange the lower extreme side at a toper section of thick bamboo for the discharge of the interior dust of supplementary toper section of thick bamboo.
When the dust-containing air filter is used, dust-containing air enters the annular air duct through the air inlet 5 in a trapezoidal tangential direction, the dust-containing air forms a rotational flow between the outer cylinder 6 and the inner cylinder 11, the centrifugal force generated by the tangential speed is greater than the centripetal force generated by the radial speed at the interface of the inner rotational flow and the outer rotational flow, most of dust moves towards the wall surface of the cylinder 6 under the pushing of the inertial centrifugal force, and part of dust particles fall off along the wall surface of the outer cylinder 6 due to friction resistance and fall into the conical cylinder 15, so that the filtering load of the filter bag 12; the dust-containing gas is further subjected to secondary gas-solid separation through a filter bag 12; pulse compressed air enters the venturi tube 10 through an air injection hole formed in the injection tube 8, the compressed air blown into the venturi tube 10 generates secondary induced air, the secondary induced air and the secondary induced air enter the filter bag 12 for back blowing, dust attached to the outer surface of the filter bag 12 falls to the conical barrel 15 at the lower part and is discharged through the discharge port 18; the purified gas enters the air outlet cover 1 and is exhausted through the air outlet 2; and finishing the whole dedusting process.
The improved spiral-flow type bag filter dust remover has high integration level, has the advantages of two dust removing devices of a cyclone dust remover and a bag dust remover, can simultaneously and efficiently purify and separate thicker and thinner dust particles in dust-containing gas, has high dust removing efficiency, and can discharge tail gas meeting the existing environmental protection requirement after once dust removal.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a whirlwind formula filter bag dust collector, its characterized in that, includes cyclone, cyclone includes intake pipe, dust removal chamber and the blast pipe that communicates according to this, cyclone's blast pipe department installs filter bag dust removal mechanism, filter bag dust removal mechanism includes card, fossil fragments and filter bag, the filter bag corresponds the cover and establishes on fossil fragments, and the fossil fragments that the cover was equipped with the filter bag correspond each hole of installing at the card, the card is fixed on the blast pipe inner wall, and dusty gas gets into the dust removal chamber through the intake pipe and removes dust for one time, and dusty gas wears filter bag dust removal mechanism to remove dust for the second time, then discharges the gas after the purification through the blast pipe.
2. The cyclone-type dust collector with filter bags of claim 1, wherein the cyclone dust collector comprises an outer cylinder and an inner cylinder which are coaxially arranged, the top end of the outer cylinder is blocked, the lower end of the outer cylinder is communicated with a conical cylinder, an annular cavity is formed between the inner cylinder and the outer cylinder, one end of the conical cylinder, which is far away from the outer cylinder, is provided with a discharge port for discharging dust, the outer cylinder and the conical cylinder jointly form a dust removing cavity, the upper part of the inner cylinder is communicated with an exhaust pipe, and the lower part of the inner cylinder is communicated with the dust removing cavity.
3. A cyclonic filter bag dust extraction apparatus as claimed in claim 2, wherein the air inlet duct is mounted to the side wall of the outer drum with the axis of the air inlet duct being collinear with a tangent to the outer drum.
4. A cyclone filter bag dust collector as claimed in claim 3, wherein the inner wall of the cone is provided with a flow guide device for pre-settling large particle dust.
5. A cyclonic filter bag dust extraction apparatus as claimed in claim 1, wherein the filter bag projects into the dust extraction chamber at a spaced distance therefrom.
6. A cyclonic filter bag dust collector as claimed in claim 5, wherein a protective screen is provided in the dust collecting chamber for separating the filter bag from a discharge outlet at the lower end of the dust collecting chamber.
7. A cyclone filter bag dust collector as claimed in claim 1, wherein the blowing mechanism is mounted on the faceplate and disposed at the top opening of each filter bag for outputting high pressure air to blow back the inside of the filter bag to make the dust on the outer surface of the filter bag fall.
8. A cyclone filter bag dust removal device as claimed in claim 7, wherein the blowing mechanism comprises an electromagnetic valve, a blowing air bag and a blowing tube which are sequentially communicated, the blowing tube is provided with air injection holes corresponding to the openings of the plurality of filter bags, and the electromagnetic valve is connected to an external air source and used for controlling the output and stop of the blowing tube.
9. The cyclone-type filter bag dust collector of claim 1, wherein the exhaust pipe is further matched with an air outlet cover, and the exhaust pipe is communicated with the dust collection cavity through the air outlet cover.
10. A dust extraction system comprising a cyclone filter bag dust extraction apparatus according to any one of claims 1 to 9.
CN201922288681.7U 2019-12-17 2019-12-17 Cyclone type filter bag dust removal device and dust removal system Active CN211274099U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922288681.7U CN211274099U (en) 2019-12-17 2019-12-17 Cyclone type filter bag dust removal device and dust removal system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922288681.7U CN211274099U (en) 2019-12-17 2019-12-17 Cyclone type filter bag dust removal device and dust removal system

Publications (1)

Publication Number Publication Date
CN211274099U true CN211274099U (en) 2020-08-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201922288681.7U Active CN211274099U (en) 2019-12-17 2019-12-17 Cyclone type filter bag dust removal device and dust removal system

Country Status (1)

Country Link
CN (1) CN211274099U (en)

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