NL2032871B1 - Blowback structure of cloth bag dust collection and cloth bag dust collection device - Google Patents
Blowback structure of cloth bag dust collection and cloth bag dust collection device Download PDFInfo
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- NL2032871B1 NL2032871B1 NL2032871A NL2032871A NL2032871B1 NL 2032871 B1 NL2032871 B1 NL 2032871B1 NL 2032871 A NL2032871 A NL 2032871A NL 2032871 A NL2032871 A NL 2032871A NL 2032871 B1 NL2032871 B1 NL 2032871B1
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- Prior art keywords
- air
- cloth bag
- component
- air duct
- outlet
- Prior art date
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- 239000004744 fabric Substances 0.000 title claims abstract description 197
- 239000000428 dust Substances 0.000 title claims abstract description 179
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 17
- 230000005291 magnetic effect Effects 0.000 claims description 14
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000000306 component Substances 0.000 description 85
- 239000005060 rubber Substances 0.000 description 31
- 238000001914 filtration Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920000136 polysorbate Polymers 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 241001052209 Cylinder Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
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
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
-
- 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
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0004—Details of removable closures, lids, caps or filter heads
-
- 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
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
-
- 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
- B01D46/66—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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention. discloses a blowback structure of cloth. bag dust collection. and. a cloth. bag dust collection. device, wherein. the blowback structure includes a cloth bag air duct component and a blowback component, an outlet of the cloth bag air duct component is arranged upwards, and the blowback component is provided with an air outlet which is opposite to the outlet of the cloth bag air duct component; an air guide duct component is arranged between the air outlet of the blowback component and the outlet of the cloth bag air duct component, and the air guide duct component includes an air guide sleeve for conducting the air outlet of the blowback component and the outlet of the cloth bag air duct component, and a driving mechanism. for driving the air guide sleeve to switch between conducting and opening states.
Description
P1549/NLpd
BLOWBACK STRUCTURE OF CLOTH BAG DUST COLLECTION AND CLOTH BAG DUST
COLLECTION DEVICE
The present invention relates to the technical field of cloth bag dust collection, and more particularly, to a blowback struc- ture of cloth bag dust collection and a cloth bag dust collection device.
Currently, a cloth bag dust collection device generally blows compressed air into an outlet towards a top of a cloth bag to blow off dust deposited on a surface of the cloth bag. However, the temperature difference between the compressed air and dust collec- tion gas is large, and the dewing phenomenon easily generates, and the deposited dust adheres to the cloth bag under the effect of dewing, which will aggravate blockage, affect the dust collection efficiency and shorten the service life of the cloth bag.
To this end, the inventor has designed a cloth bag dust col- lection device, in which the purified air is drawn out by a blow- back blower and blown into the dust collection cloth bag to remove dust, and since the temperature difference between the purified air and the dust-containing gas before filtration is small and the moisture content is consistent, so that dewing is not easily gen- erated on the cloth bag after dust removal, and the dust can be prevented from adhering to the cloth bag after meeting water, thus improving the dust collection efficiency and prolonging the ser- vice life of the cloth bag. However, compared with the traditional compressed air, due to the lack of an energy storage air tank, the pressure of the air blown out by the blowback blower is relatively small and the impact force is insufficient, so that the blowback air cannot completely enter the dust collection cloth bag, affect- ing the blowback dust removal effect and reducing the dust collec- tion efficiency.
With regard to the above-mentioned deficiencies of the prior art, the technical problems to be solved by the present invention are: how to provide a blowback structure of cloth bag dust collec- tion and a cloth bag dust collection device with ingenious struc- tural design, avoidance of blowback air escape, improvement of blowback dust removal effect, and improvement of dust collection efficiency.
In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions.
A blowback structure of cloth bag dust collection, character- ized by including a cloth bag air duct component and a blowback component, wherein an outlet of the cloth bag air duct component is arranged upwards, and the blowback component is provided with an air outlet which is opposite to the outlet of the cloth bag air duct component; an air guide duct component is arranged between the air outlet of the blowback component and the outlet of the cloth bag air duct component, and the air guide duct component in- cludes an air guide sleeve for conducting the air outlet of the blowback component and the outlet of the cloth bag air duct compo- nent, and a driving mechanism for driving the air guide sleeve to switch between conducting and opening states.
In blowback, the air guide sleeve is conducted to the air outlet of the blowback component and the outlet of the cloth bag air duct component through the driving mechanism, so that the blowback air directly passes through the air guide sleeve and en- ters the dust collection cloth bag, and the blowback air can be completely blown into the dust collection cloth bag, and the dust collection cloth bag can be blown back to remove the dust, which is beneficial to improving the dust removal effect. While filter- ing, the air guide sleeve is switched to the opening state by the driving mechanism, so that the purified air at the outlet of the dust collection cloth bag can smoothly enter a purification cham- ber to complete the purification and filtration.
Further, the air guide sleeve is sleeved on the outlet of the cloth bag air duct component in an axially movable manner; the driving mechanism is used to drive the air guide sleeve to move along the axial direction to be conductively connected between the air outlet of the blowback component and the outlet of the cloth bag air duct component.
Further, an upper end of the air guide sleeve 141 is provided with an attraction ring 143 made of a magnetic material that can be attracted by a magnet, the driving mechanism includes a first annular electromagnet 142 arranged on the blowback component 5, and the first annular electromagnet 142 is arranged opposite to the attraction ring 143.
In blowback, the first annular electromagnet 142 is energized and generates magnetic force, and the attraction ring 143 is at- tracted upwards under the action of the magnetic force, carrying the air guide sleeve to move upwards, and conducting the air out- let of the blowback component 5 and the outlet of the cloth bag air duct component 4. When filtering, the first annular electro- magnet 142 is de-energized, the attraction ring 143 loses the at- traction of the magnet, and falls down under the gravity of the air guide sleeve itself, so that the purified air can smoothly en- ter the purification chamber from the outlet of the dust collec- tion cloth bag.
Further, a lower end of the air guide sleeve 141 is also pro- vided with permanent magnets 144 which are uniformly arranged along the circumferential direction, and magnetic poles of the permanent magnets 144 have the same orientation; the outlet of the cloth bag air duct component 4 is also provided with a second an- nular electromagnet 145 which is arranged correspondingly with the permanent magnet 144, the second annular electromagnet 145 is lo- cated below the air guide sleeve 141 and is close to the permanent magnet 144; and a magnetic pole of the second annular electromag- net 145 in the energized state is identically opposite to a mag- netic pole of the permanent magnet 144.
In blowback, the first annular electromagnet 142 and the sec- ond annular electromagnet 145 are energized at the same time, and the closed permanent magnet 144 and the second annular electromag- net 145 repels identically, so that the air guide sleeve moves up- wards by one end distance, and at the same time, the distance be- tween the attraction ring 143 and the first annular electromagnet
142 is shortened, so that the attraction ring 143 is better pulled-in by the first annular electromagnet 142. In the specific implementation, the first annular electromagnet 142 and the second annular electromagnet 145 are connected in parallel and are simul- taneously energized or de-energized, so that the up and down move- ment of the air guide sleeve can be realized.
Further, a bottom surface of the first annular electromagnet 142 or a surface of the attraction ring 143 is provided with a sealing gasket.
A cloth bag dust collection device, characterized by includ- ing a dust collector main body arranged therein with the blowback structure of cloth bag dust collection as described above.
In summary, both the blowback structure of cloth bag dust collection and the cloth bag dust collection device of the present invention have the advantages of ingenious structural design, avoidance of blowback air escape, improvement of blowback dust re- moval effect, improvement of dust collection efficiency and the like.
The drawings illustrated herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and their de- scriptions of the present application are used to explain the pre- sent application and do not constitute an improper limitation of the present application. In the drawings:
FIG. 1 is a connection structure view of a cloth bag air duct component according to an embodiment of the present invention (on- ly part of the structure is shown in the figure);
FIG. 2 is an internal structural view of an embodiment of the present invention;
FIG. 3 is a perspective view of an embodiment of the present invention;
FIG. 4 is a perspective view of a blowback component accord- ing to an embodiment of the present invention;
FIG. 5 is a perspective view of a cloth bag air duct compo- nent according to an embodiment of the present invention;
FIG. 6 is a perspective view of an air duct support frame ac- cording to an embodiment of the present invention;
FIG. 7 is a perspective view of an air purifying chamber sealing plate according to an embodiment of the present invention; 5 FIG. 8 is a sectional structure diagram of a fixing ring un- der an air duct according to an embodiment of the present inven- tion; and
FIGs. 9 and 10 are enlarged structure diagrams of the circle in FIG. 1.
The present invention will be further described in detail with reference to a cloth bag dust collection device employing the structure of the present invention.
In specific implementation: a cloth bag dust collection de- vice includes a dust collector main body 1, as shown in FIG. 3, a plurality of main body support columns 12 are fixedly arranged at a bottom of the dust collector main body 1, a support column base 13 is fixedly arranged at a bottom of the main body support column 12, and an anti-skid pad is fixedly arranged at a bottom side of the support column base 13.
As shown in FIG. 2, an air purifying chamber sealing plate 3 is arranged horizontally in the dust collector main body 1, a lim- ited sealing block 104 is fixedly arranged at the joint of the in- ner side of the dust collector main body 1 and the air purifying chamber sealing plate 3, which is clamped the internal of the lim- ited sealing block 104, and divides the dust collector main body 1 into an air purifying chamber 101 and a dust-containing hopper 102 which are independent from top to bottom; a bottom of the dust- containing hopper 102 is connected with a dust discharging cylin- der 9, and the dust-containing hopper 102 is communicated with the dust discharging cylinder 9. As shown in FIG. 3, the dust dis- charging cylinder 9 is arranged with an unloading valve 11, which is arranged with a rotary handle.
As shown in FIGs. 1 and 2, a plurality of cloth bag air duct components 4 with outlets facing upwards are vertically arranged on the air purifying chamber sealing plate 3, and a dust collec-
tion cloth bag 401 in cylindrical is arranged on the cloth bag air duct component 4; a purified gas outlet 7 and a dust-containing gas inlet 8 are also arranged on the dust collector main body 1, wherein the purified gas outlet 7 is communicated with the air pu- rifying chamber 101, and the dust-containing gas inlet 8 is commu- nicated with the dust-containing hopper 102.
In operation, the dust-containing gas enters the internal of the dust-containing hopper through the dust-containing gas inlet, enters the separated air purifying chamber via the cloth bag air duct component, and when passing through the dust collection cloth bag on the cloth bag air duct component, the dust falls into the internal of the dust-containing hopper under the hindering effect of the dust collection cloth bag, or adheres to the surface of the dust collection cloth bag, thereby achieving dust collection of the dust-containing gas, and the clean gas is discharged via the purified gas outlet.
In traditional blowback cloth bag dust collectors, compressed air is often used to blow back the cloth bag, and the dust on the surface of the cloth bag is shaken off or blown off from the in- side to the outside by using the strong gas pressure and impact force of compressed air. Although the instantaneous impact force of strong gas pressure can remove the dust deposited on the sur- face of the cloth bag, the excessive impact force can also cause the damage and breakage of the cloth bag. At the same time, the compressed air is usually delivered by a high-pressure air tank, and when the compressed air is sprayed out, the volume of the gas will become larger, thus reducing the temperature of the gas; when the low-temperature compressed gas contacts with a relatively high-temperature cloth bag {the temperature of the cloth bag is similar to the temperature of the dust-containing gas), it will dew on the cloth bag and form water droplets; after the water droplets contact with the dust on the surface of the cloth bag, mud with a stronger viscosity will be formed to penetrate into the gaps of the cloth bag, blocking the filter holes (gaps) of the cloth bag, which is not suitable for cleaning, and seriously af- fects the filtration efficiency and service life.
To this end, in the present embodiment, as shown in FIGs. 2 and 3, a blowback air supply bin 6 is fixedly arranged with an up- per part of the dust collector main body 1, a blowback blower is arranged in the blowback air supply bin 6, an air inlet end of the blowback air supply bin 6 is connected to the air purifying cham- ber 101 through a circulating air supply pipe 10, an air outlet end of the blowback air supply bin 6 is connected with a blowback component 5 through an air supply duct 601, the blowback component 5 is provided with a plurality of air outlets which are oppositely arranged one-to-one with the outlet of the cloth bag air duct com- ponent 4.
When excessive dust deposits on the surface of the dust col- lection cloth bag, the blowback blower in the blowback air supply bin is started, clean air in the air purifying chamber is drawn in and blown into the blowback component through the air supply duct, and then blown back into the dust collection cloth bag by the out- let of the cloth bag air duct component opposite to the air outlet of blowback component. On the one hand, the cloth bag can be shak- en, and the dust adhering to the surface of the dust collection cloth bag can be shaken off; on the other hand, the blowback air flows outwards from the internal of the dust collection cloth bag, and the adhering dust can also be blown off, thereby cleaning the cloth bag. At the same time, the air in the blowback air supply bin comes from the air purifying chamber, and its temperature and water vapor content are consistent with those of the dust- containing gas, thereby the generation of the dewing phenomenon caused by the meeting of the blowback gas and the dust-containing gas can be avoided, so that the dust-wetting adhesion can be avoided, which is beneficial to improving the dust collection ef- fect and dust collection efficiency and prolonging the service life of the cloth bag.
In the present embodiment, a blower bin fixing plate 103 is fixedly arranged at a top of the dust collector main body 1, the blowback air supply bin 6 is fixed on the blower bin fixing plate 103 through a bolt, and the blowback blower is arranged in the blowback air supply bin 6.
As shown in FIG. 4, the blowback component 5 includes a blow- back component fixing plate 502, a blowback component connecting duct 501 is arranged on one side of the blowback component fixing plate 502, a plurality of blowback component air outlet ducts 503 corresponding to the cloth bag air duct component 4 is arranged on the other side, and the blowback component fixing plate 502 is al- so provided with a channel communicating the blowback component connecting duct 501 and the blowback component air outlet duct 503; the blowback component connecting duct 501 is communicated with the air supply duct 601, and the blowback component air out- let duct 503 is coaxially and oppositely arranged with the corre- sponding dust collection cloth bag 401.
In addition, the circular cloth bag in the existing cloth bag dust collection device only fixes an upper end, namely, vertically installed on the air purifying chamber sealing plate 3; since the lower end of the dust collection cloth bag is suspended for a long time, when the dust-containing gas enters the dust-containing hop- per 102 or the compressed air blows back the dust collection cloth bag, it will cause the dust collection cloth bag to shake, alt- hough this shaking can slow down the deposition of dust on the surface of the dust collection cloth bag to a certain extent, the long-term shaking or dithering easily causes fatigue damage and affects the service life of the dust collection cloth bag and its supporting device.
To this end, in the present embodiment, a horizontal air duct support frame 2 is further arranged in the dust collector main body 1, and the lower end of the cloth bag air duct component 4 is fixed on the air duct support frame 2.
In this way, by fixing an upper end {the air purifying cham- ber sealing plate 3) and a lower end (the air duct support frame 2) of the cloth bag air duct component, the stability of the cloth bag air duct component can be increased, and the cloth bag air duct component can be prevented from swinging and being damaged integrally under the action of the dust-containing gas and the blowback gas, which is beneficial to improving the service life.
In addition, the fixed dust collection cloth bags are parallel to each other, so that there is sufficient space between the dust collection cloth bags, the surface area of the dust collection cloth bags is sufficiently exposed in the dust-containing hopper
102 to ensure sufficient filtering area and improve the filtering efficiency.
Specifically, as shown in FIGs. 6 and 7, a plurality of fix- ing holes 301 of an upper air duct are disposed on the air purify- ing chamber sealing plate 3; the air duct support frame 2 includes a plurality of fixing rings 202 of a lower air duct arranged cor- respondingly with the fixing holes 301 of the upper air duct in one-to-one, the fixing rings 202 of the lower air duct and the fixing holes 301 of the upper air duct are arranged coaxially in the vertical direction, and a framework support arm 201 is con- nected between the plurality of fixing rings 202 of the lower air duct; the upper and lower ends of the cloth bag air duct component 4 are respectively connected to the fixing hole 301 of the upper air duct and the fixing ring 202 of the lower air duct.
In implementation, as shown in FIG. 5, the cloth bag air duct component 4 includes an upper fixing ring 402 of the air duct and a lower fixing ring 403 of the air duct, wherein the upper fixing ring 402 of the air duct is provided with an upper thread 404 of the air duct, the lower fixing ring 403 of the air duct is provid- ed with a lower thread 405 of the air duct, both the fixing hole 301 of the upper air duct and the fixing ring 202 of the lower air duct have internal threads, the upper thread 404 of the air duct is connected to the fixing hole 301 of the upper air duct by threaded screwing, and the lower thread 405 of the air duct is connected to the fixing ring 202 of the lower air duct by threaded screwing.
The upper fixing ring of the air duct on the cloth bag air duct component is connected to the fixing hole of the upper air duct on the air purifying chamber sealing plate by threaded screw- ing, and the lower fixing ring of the air duct on the cloth bag air duct component is connected to the fixing ring of the lower air duct on the air duct support frame by threaded screwing, which has a simple structure, and in the case where the dust collection cloth bag is damaged, the cloth bag air duct component can be in- stalled after the dust collection cloth bag is replaced by rotat- ing the cloth bag air duct component, which has a simple struc- ture, facilitates post maintenance and replacement, and reduces post maintenance costs.
In order to facilitate the replacement of the dust collection cloth bag, in the present embodiment, a cylindrical cloth bag sup- port frame is coaxially arranged on the upper fixing ring 402 of the air duct, and the dust collection cloth bag 401 is sleeved on the cloth bag support frame from bottom to top; the inner diameter of the lower fixing ring 403 of the air duct matches the diameter of the dust collection cloth bag sleeved on the cloth bag support frame, so that the cloth bag support frame sleeved with the dust collection cloth bag stably passes through the lower fixing ring 403 of the air duct.
When the dust collection cloth bag is replaced, the upper fixing ring 402 of the air duct is unscrewed from the fixing hole 301 of the upper air duct, and then the upper fixing ring of the air duct is communicated with the cloth bag support frame and both are drawn out from the lower fixing ring 403 of the air duct and the fixing hole 301 of the upper air duct. The damaged dust col- lection cloth bag is removed from the cloth bag support frame, af- ter a new dust collection cloth bag is replaced with, and the up- per fixing ring of the air duct is communicated with the cloth bag support frame and the dust collection cloth bag and sequentially passes through the fixing hole of the upper air duct and the lower fixing ring of the air duct from top to bottom, the upper fixing ring of the air duct is screwed on the fixing hole of the upper air duct to complete the replacement and installation of the cloth bag air duct component.
In practical use, since the dust collection cloth bag is sewn with filtering material, and the precision of sewing is affected by many factors, the precision of machining cannot be achieved, and deviations in the radial dimension of the dust collection cloth bag are often generated. In order to ensure that the dust collection cloth bag can be smoothly sleeved on the cloth bag sup- port frame, the minimum inner diameter of the dust collection cloth bag must be greater than the maximum diameter of the cloth bag support frame. In this way, dust collection cloth bags with different radial sizes will also generate different radial sizes after being sleeved on the cloth bag support frame.
In order to enable dust collection cloth bags with different radial sizes to smoothly pass through the lower fixing ring of the air duct along with the cloth bag support frame, and at the same time to be stabilized by the lower fixing ring of the air duct, the present embodiment also adopts the following structural im- provement.
As shown in FIG. 8, the inner diameter of the lower fixing ring 403 of the air duct is greater than the maximum diameter of the dust collection cloth bag sleeved on the cloth bag support frame, an elastic rubber ring 408 is installed on the inner hole of the lower fixing ring 403 of the air duct, and the minimum in- ner diameter of the elastic rubber ring 408 matches the diameter of the cloth bag support frame.
The minimum inner diameter of the elastic rubber ring 408 matches the diameter of the cloth bag support frame, that is, the cloth bag support frame can just pass through the elastic rubber ring 408 without the dust collection cloth bag being sleeved, and the elastic rubber ring 408 is not subjected to extrusion defor- mation. In this way, once the dust collection cloth bag is sleeved, the dust collection cloth bag passes through the elastic rubber ring 408 along with the cloth bag support frame, the elas- tic rubber ring 408 can be extruded, and the deformation capacity of the elastic rubber ring 408 can be used to meet the require- ments of passing through the dust collection cloth bag with dif- ferent radial sizes, and the dust collection cloth bag and the cloth bag support frame can be reliably fixed in the lower fixing ring of the air duct.
In order to better deform the elastic rubber ring 408, spe- cifically, the elastic rubber ring 408 includes a rubber ring clamped onto the lower fixing ring 403 of the air duct, the rubber ring is provided with a rubber sheet extending radially inward, a plurality of rubber sheets are uniformly arranged at intervals in the circumferential direction, and the rubber sheet is arranged perpendicular to the axial direction of the rubber ring.
In this way, the rubber sheets are arranged at intervals in the circumferential direction, so that each rubber sheet can be bent and deformed in the axial direction of the rubber ring inde-
pendently of each other, so that the dust collection cloth bag and the cloth bag support frame can pass through more easily.
Specifically, in order to enhance the support strength of the rubber sheet, it can also be strengthened in the following ways: 1, a plurality of elastic rubber rings 408 are arranged on the lower fixing ring of the air duct or a plurality of layers of the rubber sheets are arranged in the axial direction of the rub- ber ring. 2, the thickness of the rubber sheet gradually decreases in a direction away from the rubber ring. In this way, as the amount of deformation of the rubber sheet in the axial direction increases, the greater the thickness of the deformed rubber sheet, the stronger the supporting force.
In the present embodiment, after the dust collection cloth bag and the cloth bag support frame pass through the lower fixing ring of the air duct, they also need to screw along with the upper fixing ring of the air duct to rotate, and in order to prevent the dust collection cloth bag from being damaged by relative friction with the lower fixing ring of the air duct during rotation, a ro- tatable inner sleeve 407 is also installed on the inner hole of the lower fixing ring 403 of the air duct, and the elastic rubber ring 408 is installed on the inner sleeve 407.
In this way, the dust collection cloth bag is sleeved on the cloth bag support frame and passes through the elastic rubber ring 408, and in the process of screwing along the upper fixing ring of the air duct, the elastic rubber ring 408 and the inner sleeve 407 can be driven to rotate together, so as to avoid the relative friction of the elastic rubber ring 408 in the process of rotating the dust collection cloth bag and damage of the dust collection cloth bag.
In the present embodiment, the inner sleeve 407 is coaxially installed on the inner hole of the lower fixing ring 403 of the air duct through a ball shaft sleeve 406. Of course, a bearing or a bearing bush may be used to replace the ball shaft sleeve 406.
As shown in FIG. 2, in order to enable the dust-containing gas to smoothly enter the air purifying chamber after being fil- tered by the dust collection cloth bag, the air outlets of the blowback component 5 are arranged above the outlets of the corre- sponding cloth bag air duct component 4 at intervals.
Although this structure can satisfy the requirement that the filtered purified air quickly enters the air purifying chamber, it also provides an escape space for the blowback air blown from the air outlet of the blowback component. In the traditional blowback cloth bag dust collector, the compressed air has a large pressure and impact force under the energy storage of the compressed air tank, which can make the blowback air quickly pass through the gap between the two, and enter the dust collection cloth bag for blow- back dust removal. However, in the present embodiment, in order to avoid the generation of the dewing phenomenon, the purified air is drawn by the blowback blower for blowback, and although the puri- fied air can increase the pressure under the action of the blow- back blower, the pressure is still small compared to the pressure of the compressed air. Considering that in the process of blow- back, there is still dust-containing gas entering the dust collec- tor main body and entering the dust collection cloth bag from the outside of the dust collection cloth bag, that is, the outlet of the dust collection cloth bag has an outward airflow, which hin- ders the blowback air from entering the dust collection cloth bag, and increases the probability of the blowback air flowing away {escaping) from the gap between the air outlet of the blowback component 5 and the cloth bag air duct component 4 .
To this end, in the present embodiment, an air guide duct component 14 is arranged between the air outlet of the blowback component 5 and the outlet of the cloth bag air duct component 4, and the air guide duct component 14 includes an air guide sleeve 141 for conducting the air outlet of the blowback component 5 and the outlet of the cloth bag air duct component 4, and a driving mechanism for driving the air guide sleeve 141 to switch between conducting and opening states.
In blowback, the air guide sleeve is conducted to the air outlet of the blowback component 5 and the outlet of the cloth bag air duct component 4 through the driving mechanism, so that the blowback air directly passes through the air guide sleeve and en- ters the dust collection cloth bag, and the blowback air can be completely blown into the dust collection cloth bag, and the dust collection cloth bag can be blown back to remove the dust, which is beneficial to improving the dust removal effect. In filtering, the air guide sleeve 141 is switched to the opening state by the driving mechanism, so that the purified air at the outlet of the dust collection cloth bag can smoothly enter the purification chamber to complete the purification and filtration.
In the present embodiment, the air guide sleeve 141 is sleeved on the outlet of the cloth bag air duct component 4 in an axially movable manner; the driving mechanism is used to drive the air guide sleeve 141 to move along the axial direction to be con- ductively connected between the air outlet of the blowback compo- nent 5 and the outlet of the cloth bag air duct component 4.
Of course, in the specific implementation, the air guide sleeve 141 may also be sleeved on the air outlet of the blowback component 5 in an axially movable manner, but in the present em- bodiment, in order to make full use of the gravity of the air guide sleeve 141 itself to switch the air guide sleeve to the opening state, and it is more energy-saving to sleeve the air guide sleeve 141 on the outlet of the cloth bag air duct component 4.
In order to simplify the driving mechanism to save costs and at the same time facilitate the installation of the driving mecha- nism, in the present embodiment, as shown in FIGs. 9 and 10, an upper end of the air guide sleeve 141 is provided with an attrac- tion ring 143 made of a magnetic material that can be attracted by a magnet, the driving mechanism includes a first annular electro- magnet 142 arranged on the blowback component 5, and the first an- nular electromagnet 142 is arranged opposite to the attraction ring 143.
In blowback, the first annular electromagnet 142 is energized and generates magnetic force, and the attraction ring 143 is at- tracted upwards under the action of the magnetic force, carrying the air guide sleeve to move upwards, and conducting the air out- let of the blowback component 5 and the outlet of the cloth bag air duct component 4. In filtering, the first annular electromag- net 142 is de-energized, the attraction ring 143 loses the attrac-
tion of the magnet, and falls under the gravity of the air guide sleeve itself, so that the purified air can smoothly enter the pu- rification chamber from the outlet of the dust collection cloth bag.
In order to enable the attraction ring 143 to be more relia- bly attracted by the first annular electromagnet 142, a lower end of the air guide sleeve 141 is also provided with permanent mag- nets 144 which are uniformly arranged along the circumferential direction, and magnetic poles of the permanent magnets 144 have the same orientation; the outlet of the cloth bag air duct compo- nent 4 is also provided with a second annular electromagnet 145 which is arranged correspondingly with the permanent magnet 144, the second annular electromagnet 145 is located below the air guide sleeve 141 and is close to the permanent magnet 144; and a magnetic pole of the second annular electromagnet 145 in the ener- gized state is identically opposite to a magnetic pole of the per- manent magnet 144.
In blowback, the first annular electromagnet 142 and the sec- ond annular electromagnet 145 are energized at the same time, and the closed permanent magnet 144 and the second annular electromag- net 145 repels identically, so that the air guide sleeve moves up- wards by one end distance, and at the same time, the distance be- tween the attraction ring 143 and the first annular electromagnet 142 is shortened, so that the attraction ring 143 is better pulled-in by the first annular electromagnet 142. In the specific implementation, the first annular electromagnet 142 and the second annular electromagnet 145 are connected in parallel and are simul- taneously energized or de-energized, the up and down movement of the air guide sleeve can be realized.
In order to improve the sealing between the air guide sleeve and the blowback component 5, a bottom surface of the first annu- lar electromagnet 142 or a surface of the attraction ring 143 is provided with a sealing gasket.
The principle of the cylindrical cloth bag dust collection device provided in the present embodiment is as follows.
An air duct support frame 2 and an air purifying chamber sealing plate 3 are internally installed the dust collector main body 1, five cloth bag air duct components 4 are installed between the air duct support frame 2 and the air purifying chamber sealing plate 3, an air purifying chamber 101 is formed between the air purifying chamber sealing plate 3 and the internal of the dust collector main body 1, the dust-containing gas enters the internal of the dust-containing hopper through the dust-containing gas in- let, enters the separated air purifying chamber via the cloth bag air duct component, and when passing through the dust collection cloth bag on the cloth bag air duct component, the dust falls into the internal of the dust-containing hopper under the hindering ef- fect of the dust collection cloth bag, or adheres to the surface of the dust collection cloth bag, thereby achieving dust collec- tion of the dust-containing gas, and the clean gas is discharged via the purified gas outlet.
In blowback, as shown in FIG. 10, the first annular electro- magnet 142 and the second annular electromagnet 145 are energized, a permanent magnet 144 at the lower end of the air guide sleeve carries the air guide sleeve to move upwards under the action of the repulsive force of the second annular electromagnet 145, so that the distance between an attraction ring 143 at the top of the air guide sleeve and the first annular electromagnet 142 is short- ened, the attraction ring 143 continues to carry the guide sleeve to move upwards under the attraction of the magnetic force of the first annular electromagnet 142, and is finally pulled-in onto the first annular electromagnet 142 to conduct the air outlet of the blowback component 5 and the outlet of the cloth bag air duct com- ponent 4. The blowback blower is started, the purified air in the air purifying chamber is drawn out and sent to the blowback compo- nent 5, and blown back into the dust collection cloth bag through the air outlet of the blowback component 5. On the one hand, the cloth bag can be shaken, and the dust adhering to the surface of the dust collection cloth bag can be shaken off; on the other hand, the blowback air flows outwards from the internal of the dust collection cloth bag, and the adhering dust can also be blown off, thereby cleaning the cloth bag.
Since the air in the blowback air supply bin comes from the air purifying chamber, and its temperature and water vapor content are consistent with those of the dust-containing gas, thereby the generation of the dewing phenomenon caused by the meeting of the blowback gas and the dust-containing gas can be avoided, so that the dust-wetting adhesion can be avoided, which is beneficial to improving the dust collection effect and dust collection efficien- cy and prolonging the service life of the cloth bag.
It should be noted that the terms “includes”, “comprises”, or its any other variation, are intended to cover a non-exclusive in- clusion, such that a commodity or system that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such commodity or system. Without further restrictions, the el- ement defined by the statement "including a/an .." does not exclude the presence of additional identical elements in the commodity or system including the element.
The above description shows and describes several preferred embodiments of the present invention. Modifications and changes made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protec- tion scope of the appended claims of the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2032871A NL2032871B1 (en) | 2022-08-29 | 2022-08-29 | Blowback structure of cloth bag dust collection and cloth bag dust collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2032871A NL2032871B1 (en) | 2022-08-29 | 2022-08-29 | Blowback structure of cloth bag dust collection and cloth bag dust collection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2032871B1 true NL2032871B1 (en) | 2024-03-12 |
Family
ID=90300569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2032871A NL2032871B1 (en) | 2022-08-29 | 2022-08-29 | Blowback structure of cloth bag dust collection and cloth bag dust collection device |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL2032871B1 (en) |
-
2022
- 2022-08-29 NL NL2032871A patent/NL2032871B1/en active
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