CN110513307B - Exhaust fan for purifying dust, paint mist and oil smoke waste gas - Google Patents
Exhaust fan for purifying dust, paint mist and oil smoke waste gas Download PDFInfo
- Publication number
- CN110513307B CN110513307B CN201910893788.6A CN201910893788A CN110513307B CN 110513307 B CN110513307 B CN 110513307B CN 201910893788 A CN201910893788 A CN 201910893788A CN 110513307 B CN110513307 B CN 110513307B
- Authority
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- China
- Prior art keywords
- shell
- drainage
- inner cavity
- air inlet
- wind wheel
- Prior art date
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Links
- 239000000428 dust Substances 0.000 title claims abstract description 37
- 239000003595 mist Substances 0.000 title claims abstract description 35
- 239000003973 paint Substances 0.000 title claims abstract description 35
- 239000000779 smoke Substances 0.000 title claims description 14
- 239000002912 waste gas Substances 0.000 title description 27
- 238000000746 purification Methods 0.000 claims description 43
- 239000007789 gas Substances 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 29
- 239000002245 particle Substances 0.000 claims description 24
- 238000007667 floating Methods 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 15
- 239000003517 fume Substances 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 239000013049 sediment Substances 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000006233 lamp black Substances 0.000 abstract description 10
- 239000011324 bead Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 238000010992 reflux Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/705—Adding liquids
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Separation Of Particles Using Liquids (AREA)
Abstract
The invention relates to the technical field of exhaust fans, in particular to a dust, paint mist and lampblack exhaust gas purifying exhaust fan which comprises a shell, an air inlet pipe, a motor and a wind wheel, wherein the air inlet pipe is arranged in an inner cavity of the shell, the wind wheel is arranged in the inner cavity of the shell, the air outlet end of the wind wheel is close to the rear side wall of the inner cavity of the shell, the air inlet of the air inlet pipe upwards penetrates out of the top of the shell and is communicated with the outside, the air outlet of the air inlet pipe is backwards bent and extends to the air inlet end of the wind wheel, the air outlet of the air inlet pipe is communicated with the air inlet end of the wind wheel, the motor is fixed on the rear end surface of the shell, an output shaft of the motor forwards extends into the inner cavity of the shell and is inserted in the axis of the wind wheel, and the front end of the shell is provided with an air outlet communicated with the inner cavity of the shell, and the air outlet is coaxial with the wind wheel.
Description
Technical field:
The invention relates to the technical field of exhaust fans, in particular to an exhaust fan for purifying dust, paint mist and lampblack exhaust gas.
The background technology is as follows:
Suction fans, also called side stream blowers, centrifugal blowers, small blowers, are a common device that can be used for suction and exhaust, typically for suction of mechanical devices.
Although the use of the current exhaust fan is very common, the current exhaust fan generally sucks air from the center of the wind wheel and exhausts air along the tangential direction of the outer contour of the wind wheel, and the motor and the wind wheel shake and vibrate in the tangential direction due to tangential force generated during exhausting, so that the exhaust fan can generate high noise during operation, and the problems of high energy consumption, unstable operation, short service life and the like are also caused.
The invention comprises the following steps:
the invention aims to provide the exhaust gas purifying exhaust fan for dust, paint mist and lampblack, which has low noise, low energy consumption, stable operation and long service life and aims to overcome the defects in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the utility model provides a dust, coating cloud, oil smoke exhaust purification air exhauster, includes casing, income tuber pipe, motor, wind wheel, go into the tuber pipe setting in the inner chamber of casing, the wind wheel setting is in the casing inner chamber and its air-out end is close to the back lateral wall of casing inner chamber, the income wind gap of income tuber pipe upwards wears out casing top and outside intercommunication, the air outlet of income tuber pipe is crooked backward and extends to the air-in end of wind wheel, the air outlet of income tuber pipe communicates with the income wind end of wind wheel, the motor is fixed on the rear end face of casing, the output shaft of motor stretches into the casing inner chamber forward and peg graft in wind wheel axle center department, the air exit with casing inner chamber intercommunication has been seted up to the casing front end, the air exit is coaxial with the wind wheel.
The scheme is further improved in that a spray ring for spraying liquid medium into the air inlet pipe is arranged in the air inlet pipe.
The scheme is further improved in that the spray ring comprises a primary spray ring arranged in the air inlet of the air inlet pipe and a secondary spray ring arranged in the air outlet of the air inlet pipe.
According to the technical scheme, the filter tank for containing the reflux liquid medium is formed at the bottom of the inner cavity of the shell, a floating object overflow pipe for collecting floating objects of the filter tank is arranged in the filter tank, the inlet end of the floating object overflow pipe extends upwards to the liquid level of the filter tank, the outlet end of the floating object overflow pipe penetrates through the bottom of the shell to be communicated with the outside, and a sediment discharge port is formed in the bottom of the filter tank.
The invention further improves the scheme, and the floating object floating device further comprises a circulating pump and a filtering device, wherein the filtering device is connected in series between the outlet end of the floating object overflow pipe and the inlet end of the circulating pump through a pipeline, and the outlet end of the circulating pump is respectively communicated with the primary spraying ring and the secondary spraying ring through pipelines.
The technical scheme is further improved in that a drainage partition plate is arranged in the inner cavity of the shell, the drainage partition plate divides the inner cavity of the shell into a primary purification cavity positioned behind the inner cavity of the shell and a secondary purification cavity positioned in front of the inner cavity of the shell, the drainage partition plate is provided with a vent for communicating the primary purification cavity with the secondary purification cavity, the vent is coaxial with the wind wheel, the primary purification cavity is mutually communicated with the bottom of the secondary purification cavity, the periphery of the vent is backwards formed with an annular second drainage plate, the rear end of the second drainage plate is bent outwards along the radial direction to form a second drainage part, and an annular second drainage groove is formed between the second drainage plate and the drainage partition plate.
The technical scheme is further improved that an annular first drainage plate is formed on the rear side wall of the inner cavity of the shell forwards, the first drainage plate is coaxial with the wind wheel, the front end of the first drainage plate is bent outwards along the radial direction to form a first drainage part, and an annular first drainage groove is formed between the first drainage plate and the rear side wall of the inner cavity of the shell in a surrounding mode; the periphery of the vent is formed with an annular third drainage plate forwards, the front end of the third drainage plate is bent outwards along the radial direction to form a third drainage part, and an annular third drainage groove is formed between the third drainage plate and the drainage partition plate in a surrounding manner; the periphery of the shell air outlet is backwards formed with an annular fourth drainage plate, the rear end of the fourth drainage plate is bent outwards along the radial direction to form a fourth drainage part, and an annular fourth drainage groove is formed between the fourth drainage plate and the front side wall of the shell inner cavity in a surrounding mode.
The further improvement of above-mentioned scheme is, go into the tuber pipe and be L type structure, go into tuber pipe corner bottom and be equipped with big granule drain pipe, big granule drain pipe's entry end and go into tuber pipe intercommunication, big granule drain pipe's exit end downwardly extending to the below of casing inner chamber.
The invention further comprises a motor mounting plate and annular soft sealing connecting canvas, wherein the motor is fixed on the rear end surface of the shell through the motor mounting plate, and the motor mounting plate is sealed with the rear end surface of the shell through the annular soft sealing connecting canvas.
The further improvement of the scheme is that the diameter of the wind wheel is 1/4-1/3 of the diameter of the shell, and the radial sectional area of the air outlet is at least 2 times of the radial sectional area of the air inlet pipe.
The invention has the beneficial effects that: the invention provides a dust, paint mist and lampblack exhaust gas purifying exhaust fan which comprises a shell, an air inlet pipe, a motor and a wind wheel, wherein the air inlet pipe is arranged in an inner cavity of the shell; compared with the traditional exhaust fan which enters the wind from the center of the wind wheel and exhausts the wind along the tangential direction of the outer contour line of the wind wheel, the invention enters the wind downwards from the top of the shell, exhausts the wind forwards from the air outlet coaxial with the wind wheel after passing through the inner cavity of the shell, the exhaust fan is uniformly stressed in the whole exhaust and air exhaust process, no tangential force generated by the traditional exhaust fan during air exhaust exists, and the vibration and vibration of the motor and the wind wheel in the tangential direction caused by the tangential force generated during air exhaust can be effectively avoided, thereby the noise of the exhaust fan is reduced, the energy consumption is reduced, the operation is stable, and the service life is long; in addition, the liquid medium sprayed by the spray ring can be mixed with dust, paint mist and oil fume in the exhaust gas, the small particle dust, paint mist and oil fume in the exhaust gas are condensed into large particle dust, paint mist and oil fume, the large particle dust, paint mist and oil fume in the exhaust gas can directly collide with a large particle drain pipe to be discharged at the turning position of an air inlet pipe due to the action of centrifugal force, the dust, paint mist and oil fume in the exhaust gas can be effectively prevented from adhering to the surface of a wind wheel, the extra load of a motor is reduced, the negative pressure capacity of an exhaust fan can be greatly improved, thereby better exhaust effect of the exhaust fan is realized, heavier gases such as dust, paint mist and oil fume can collide with the inner cavity wall of the shell under the centrifugal action of high-pressure swirling airflow in the shell to be liquefied and condensed into liquid beads, and the liquid beads flow back to a filter tank from a drainage groove, and most of the dust, paint mist and oil fume in the exhaust gas can be separated from the gas, and clean gas can be discharged, so that purification function of the exhaust fan is realized; when the air inlet of the air inlet pipe is blocked, the large particle drain pipe and the filter tank can form a new air draft loop with the wind wheel, so that the condition that the air draft fan is exploded due to the blocking of the air inlet pipe can be avoided.
Description of the drawings:
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is an enlarged view at B in fig. 1.
Fig. 4 is an enlarged view at C in fig. 1.
Reference numerals illustrate: the device comprises a shell 1, an air inlet pipe 2, a motor 3, a wind wheel 4, an air outlet 5, a drainage partition plate 6, a primary purification cavity 7, a secondary purification cavity 8, a ventilation opening 9, a first drainage plate 10, a first drainage part 11, a first drainage groove 12, a second drainage plate 13, a second drainage part 14, a second drainage groove 15, a third drainage plate 16, a third drainage part 17, a third drainage groove 18, a fourth drainage plate 19, a fourth drainage part 20, a fourth drainage groove 21, a filter tank 22, a large particle drain pipe 23, a floating object overflow pipe 24, a sediment discharge opening 25, a primary spray ring 26, a secondary spray ring 27, a circulating pump 28, a filter 29, a motor mounting plate 30 and an annular soft sealing connection canvas 31.
The specific embodiment is as follows:
the invention is further described below with reference to the accompanying drawings, and as shown in fig. 1-4, the invention comprises a casing 1, an air inlet pipe 2, a motor 3 and a wind wheel 4, wherein the upper half part of the casing 1 is semicircular, the lower half part of the casing 1 is inverted trapezoid, the air inlet pipe 2 is arranged in the inner cavity of the casing 1, the wind wheel 4 is arranged in the inner cavity of the casing 1, the air outlet end of the wind wheel 4 is close to the rear side wall of the inner cavity of the casing 1, the air inlet of the air inlet pipe 2 upwards penetrates out of the top of the casing 1 to be communicated with the outside, the air outlet of the air inlet pipe 2 is backwards bent and extends to the air inlet end of the wind wheel 4, the air outlet of the air inlet pipe 2 is communicated with the air inlet end of the wind wheel 4, the air outlet of the air inlet pipe 2 forms a horn-shaped structure with front and back sizes, the motor 3 is fixed on the rear end face of the casing 1, the output shaft of the motor 3 extends forward into the inner cavity of the casing 1 and is inserted into the axis of the wind wheel 4, the front end of the casing 1 is provided with an air outlet 5 communicated with the inner cavity of the casing 1, the air outlet 5 is coaxial with the wind wheel 4, the air enters downwards from the top of the casing 1 and is exhausted forward from the air outlet 5 coaxial with the wind wheel 4 after passing through the inner cavity of the casing 1, the stress of the exhaust fan is uniform in the whole exhaust and exhaust process, no tangential force generated by the traditional exhaust fan exists in the exhaust process, and the conditions that the motor 3 and the wind wheel 4 shake and vibrate in the tangential direction due to the tangential force generated in the exhaust process can be effectively avoided, so that the noise of the exhaust fan is reduced, the energy consumption is reduced, the operation is stable, and the service life is long.
The spray ring for spraying liquid medium into the air inlet pipe 2 is arranged in the air inlet pipe 2, and comprises a primary spray ring 26 arranged in the air inlet of the air inlet pipe 2 and a secondary spray ring 27 arranged in the air outlet of the air inlet pipe 2, wherein liquid medium sprayed by the spray ring can be water or other liquid, and the liquid medium sprayed by the spray ring can be mixed with dust, paint mist and lampblack in waste gas to agglomerate the small particle dust, paint mist and lampblack in the waste gas into large particle dust, paint mist and lampblack.
The bottom of the inner cavity of the shell 1 forms a filter tank 22 for containing a reflux liquid medium, a float overflow pipe 24 for collecting floats of the filter tank 22 is arranged in the filter tank 22, the inlet end of the float overflow pipe 24 is in a horn mouth shape with a big upper part and a small lower part, the inlet end of the float overflow pipe 24 extends upwards to the liquid level of the filter tank 22, the outlet end of the float overflow pipe 24 passes through the bottom of the shell 1 to be communicated with the outside, a sediment discharge port 25 is arranged at the bottom of the filter tank 22, lighter floats in the filter tank 22 are discharged from the float overflow pipe 24, and heavier sediment in the filter tank 22 is discharged from the sediment discharge port 25.
The invention also comprises a circulating pump 28 and a filtering device 29, wherein the filtering device 29 is connected in series between the outlet end of the floating object overflow pipe 24 and the inlet end of the circulating pump 28 through pipelines, the outlet end of the circulating pump 28 is respectively communicated with the primary spraying ring 26 and the secondary spraying ring 27 through pipelines, liquid media sprayed by the primary spraying ring 26 and the secondary spraying ring 27 can flow back into the filtering tank 22, the filtering device 29 collects and filters the liquid media flowing back into the filtering tank 22 through the floating object overflow pipe 24, and the liquid media filtered by the filtering device 29 are re-conveyed into the primary spraying ring 26 and the secondary spraying ring 27 through the circulating pump 28, so that the recycling of the liquid media is realized.
The rear side wall of the inner cavity of the shell 1 is formed with an annular first drainage plate 10 forwards, the first drainage plate 10 is coaxial with the wind wheel 4, the front end of the first drainage plate 10 is bent outwards along the radial direction to form a first drainage part 11, and an annular first drainage groove 12 is formed between the first drainage plate 10 and the rear side wall of the inner cavity of the shell 1; the inner cavity of the machine shell 1 is provided with a drainage baffle plate 6, the inner cavity of the machine shell 1 is divided into a primary purification cavity 7 positioned at the rear of the inner cavity of the machine shell 1 and a secondary purification cavity 8 positioned at the front of the inner cavity of the machine shell 1 by the drainage baffle plate 6, the drainage baffle plate 6 is provided with a vent 9 communicated with the primary purification cavity 7 and the secondary purification cavity 8, the vent 9 is coaxial with the wind wheel 4, the bottom of the primary purification cavity 7 and the bottom of the secondary purification cavity 8 are mutually communicated, the periphery of the vent 9 is backwards formed with an annular second drainage plate 13, the rear end of the second drainage plate 13 is bent outwards along the radial direction to form a second drainage part 14, an annular second drainage groove 15 is formed between the second drainage plate 13 and the drainage baffle plate 6, the periphery of the vent 9 is forwards formed with an annular third drainage plate 16, the front end of the third drainage plate 16 is bent outwards along the radial direction to form a third drainage part 17, an annular third drainage groove 18 is formed between the third drainage plate 16 and the drainage baffle plate 6, an annular fourth drainage plate 19 is formed at the periphery of the air outlet 5 of the shell 1 backwards, the rear end of the fourth drainage plate 19 is bent outwards along the radial direction to form a fourth drainage part 20, an annular fourth drainage groove 21 is formed between the fourth drainage plate 19 and the front side wall of the inner cavity of the shell 1, larger dust, paint mist and lampblack particles in waste gas can directly collide with a large particle drain pipe 23 to be discharged due to the effect of centrifugal force at the turning part of an air inlet pipe 2 to finish the first waste gas purification, the gas after the first waste gas purification is discharged from the air outlet end of the wind wheel 4, heavier gases such as dust, paint mist and lampblack are impacted onto the inner cavity wall of the shell 1 under the centrifugal force effect of high-pressure whirling airflow to generate liquefied and condensed liquid beads and flow back to the filter tank 22 from the first drainage groove 12 to finish the second waste gas purification, the gas after the second waste gas purification enters the primary purification cavity 7, wherein heavier gases such as dust, paint mist, oil smoke and the like are impacted onto the inner cavity wall of the shell 1 under the centrifugal force action of the high-pressure whirling airflow to form liquefied and condensed liquid beads, the liquefied and condensed liquid beads flow back into the filter tank 22 from the second drainage groove 15, the third waste gas purification is completed, the gas after the third waste gas purification enters the secondary purification cavity 8 through the ventilation opening 9, the heavier gases such as dust, paint mist, oil smoke and the like are impacted onto the inner cavity wall of the shell 1 under the centrifugal force action of the high-pressure whirling airflow to form liquefied and condensed liquid beads, the liquefied and condensed liquid beads flow back into the filter tank 22 from the fourth drainage groove 21, the gas after the fifth waste gas purification is completed, the gas after the fifth waste gas purification is discharged from the exhaust outlet 5, and the purification function of the exhaust fan is realized.
The air inlet pipe 2 is of an L-shaped structure, the bottom of the corner of the air inlet pipe 2 is provided with a large particle drain pipe 23, the inlet end of the large particle drain pipe 23 is in a horn mouth shape with a large upper part and a small lower part, the inlet end of the large particle drain pipe 23 is communicated with the air inlet pipe 2, the outlet end of the large particle drain pipe 23 extends downwards to the lower part of the inner cavity of the shell 1, when the exhaust fan is in a normal working state, an air inlet of the air inlet pipe 2 and the wind wheel 4 form an exhaust loop, the large particle drain pipe 23 cannot form an exhaust loop with the wind wheel 4 due to insufficient suction, and when the air inlet of the air inlet pipe 2 is blocked, the large particle drain pipe 23 and the filter tank 22 form a new exhaust loop with the wind wheel 4, so that explosion caused by blockage of the air inlet pipe 2 can be avoided.
The invention also comprises a motor mounting plate 30 and an annular soft sealing connection canvas 31, the motor 3 is fixed on the rear end face of the shell 1 through the motor mounting plate 30, the motor mounting plate 30 and the rear end face of the shell 1 are sealed through the annular soft sealing connection canvas 31, the outer diameter of the annular soft sealing connection canvas 31 is larger than the diameter of the wind wheel 4, the inner diameter of the annular soft sealing connection canvas 31 is larger than the diameter of the motor 3, the function of shock absorption and motor 3 position adjustment is achieved, the diameter of the wind wheel 4 is 1/4-1/3 of the diameter of the shell 1, the radial sectional area of the air outlet 5 is at least 2 times of the radial sectional area of the air inlet pipe 2, the traditional exhaust fan adopts the air inlet pipe 2 with a large diameter in order to meet the use requirement of the exhaust suction force, the invention is not only expensive but also difficult to install, compared with the traditional exhaust fan, the invention can effectively avoid dust, paint mist and lampblack in waste gas from adhering to the surface of the wind wheel, reduces the extra load of the motor, and can greatly improve the negative pressure capacity of the exhaust fan on the premise of guaranteeing the same exhaust force.
Working principle:
When the waste gas in the workshop is introduced from the air inlet of the air inlet pipe 2, dust, paint mist and oil smoke in the waste gas can be mixed with liquid media sprayed by the primary spraying ring 26 and the secondary spraying ring 27, small particle dust, paint mist and oil smoke in the waste gas are condensed into large particle dust, paint mist and oil smoke, the large particle dust, paint mist and oil smoke particles in the waste gas can directly collide with the large particle exhaust pipe 23 to be discharged due to the effect of centrifugal force at the turning position of the air inlet pipe 2 to finish the first waste gas purification, the gas purified by the first waste gas is discharged from the air discharge end of the wind wheel 4, heavier gases such as dust, paint mist and oil smoke are impacted on the inner cavity wall of the shell 1 under the centrifugal force of high-pressure whirling airflow to generate liquefied and condensed into liquid beads which flow back into the filter tank 22 from the first drainage groove 12 to finish the second waste gas purification, the gas purified by the second waste gas enters the first purification cavity 7, wherein the heavier gases such as dust, paint mist, oil smoke and the like are impacted on the inner cavity wall of the shell 1 under the centrifugal force of the high-pressure whirl air flow to generate liquefied and condensed liquid beads and flow back to the filter tank 22 from the second drainage groove 15, so as to finish the third waste gas purification, the gases after the third waste gas purification enter the secondary purification cavity 8 through the ventilation opening 9, the heavier gases such as dust, paint mist, oil smoke and the like are impacted on the inner cavity wall of the shell 1 under the centrifugal force of the high-pressure whirl air flow to generate liquefied and condensed liquid beads and flow back to the filter tank 22 from the third drainage groove 18, so as to finish the fourth waste gas purification, the heavier gases such as dust, paint mist, oil smoke and the like are impacted on the inner cavity wall of the shell 1 under the centrifugal force of the high-pressure whirl air flow to generate liquefied and condensed liquid beads and flow back to the filter tank 22 from the fourth drainage groove 21, and the fifth waste gas purification is finished, the gas after the fifth waste gas purification is discharged from the air outlet 5, and the exhaust fan does not generate intense shaking and vibration in the whole exhaust and air exhaust process, so that the operation is stable.
It is understood that the foregoing description is only of the preferred embodiments of the invention, and that the invention is not limited to the specific details of construction, features and principles disclosed herein.
Claims (7)
1. The utility model provides a dust, coating cloud, oil smoke exhaust purification air exhauster, includes casing (1), goes into tuber pipe (2), motor (3), wind wheel (4), its characterized in that: the wind inlet pipe (2) is arranged in the inner cavity of the shell (1), the wind wheel (4) is arranged in the inner cavity of the shell (1) and the wind outlet end of the wind wheel is close to the rear side wall of the inner cavity of the shell (1), the wind inlet of the wind inlet pipe (2) upwards penetrates out of the top of the shell (1) to be communicated with the outside, the wind outlet of the wind inlet pipe (2) is backwards bent and extends to the wind inlet end of the wind wheel (4), the wind outlet of the wind inlet pipe (2) is communicated with the wind inlet end of the wind wheel (4), the motor (3) is fixed on the rear end face of the shell (1), the output shaft of the motor (3) forwards stretches into the inner cavity of the shell (1) and is inserted into the axis of the wind wheel (4), the wind outlet (5) communicated with the inner cavity of the shell (1) is formed in the front end of the shell (1), and the wind outlet (5) is coaxial with the wind wheel (4); the novel water-saving device is characterized in that a drainage partition plate (6) is arranged in an inner cavity of the machine shell (1), the inner cavity of the machine shell (1) is divided into a primary purification cavity (7) positioned at the rear of the inner cavity of the machine shell (1) and a secondary purification cavity (8) positioned at the front of the inner cavity of the machine shell (1) by the drainage partition plate (6), a vent (9) communicated with the primary purification cavity (7) and the secondary purification cavity (8) is formed in the drainage partition plate (6), the vent (9) is coaxial with the wind wheel (4), the bottoms of the primary purification cavity (7) and the secondary purification cavity (8) are mutually communicated, an annular second drainage plate (13) is formed by backwards forming the periphery of the vent (9), the rear end of the second drainage plate (13) is bent outwards in the radial direction to form a second drainage part (14), and an annular second drainage groove (15) is formed between the second drainage plate (13) and the drainage partition plate (6); an annular first drainage plate (10) is formed on the rear side wall of the inner cavity of the shell (1) forwards, the first drainage plate (10) is coaxial with the wind wheel (4), the front end of the first drainage plate (10) is bent outwards along the radial direction to form a first drainage part (11), and an annular first drainage groove (12) is formed between the first drainage plate (10) and the rear side wall of the inner cavity of the shell (1) in a surrounding mode; an annular third drainage plate (16) is formed forward on the periphery of the ventilation opening (9), the front end of the third drainage plate (16) is bent outwards along the radial direction to form a third drainage part (17), and an annular third drainage groove (18) is formed between the third drainage plate (16) and the drainage partition plate (6); an annular fourth drainage plate (19) is formed at the periphery of the air outlet (5) of the shell (1) backwards, the rear end of the fourth drainage plate (19) is bent outwards along the radial direction to form a fourth drainage part (20), and an annular fourth drainage groove (21) is formed between the fourth drainage plate (19) and the front side wall of the inner cavity of the shell (1); the diameter of the wind wheel (4) is 1/4-1/3 of the diameter of the shell (1), and the radial sectional area of the air outlet (5) is at least 2 times of the radial sectional area of the air inlet pipe (2).
2. A dust, paint mist, fume exhaust gas purifying exhaust fan according to claim 1, characterized in that: a spray ring for spraying liquid medium into the air inlet pipe (2) is arranged in the air inlet pipe (2).
3. A dust, paint mist, fume exhaust gas purifying exhaust fan according to claim 2, characterized in that: the spray ring comprises a primary spray ring (26) arranged in the air inlet of the air inlet pipe (2) and a secondary spray ring (27) arranged in the air outlet of the air inlet pipe (2).
4. A dust, paint mist, fume exhaust gas purifying exhaust fan according to claim 3, wherein: a filter tank (22) for containing a backflow liquid medium is formed at the bottom of an inner cavity of the shell (1), a floating object overflow pipe (24) for collecting floating objects of the filter tank (22) is arranged in the filter tank (22), the inlet end of the floating object overflow pipe (24) extends upwards to the liquid level of the filter tank (22), the outlet end of the floating object overflow pipe (24) penetrates through the bottom of the shell (1) to be communicated with the outside, and a sediment discharge port (25) is formed in the bottom of the filter tank (22).
5. A dust, paint mist, fume exhaust gas purifying exhaust fan according to claim 4, wherein: the floating device is characterized by further comprising a circulating pump (28) and a filtering device (29), wherein the filtering device (29) is connected in series between the outlet end of the floating object overflow pipe (24) and the inlet end of the circulating pump (28) through a pipeline, and the outlet end of the circulating pump (28) is respectively communicated with the primary spraying ring (26) and the secondary spraying ring (27) through pipelines.
6. A dust, paint mist, fume exhaust gas purifying exhaust fan according to claim 1, characterized in that: the air inlet pipe (2) is of an L-shaped structure, a large particle drain pipe (23) is arranged at the bottom of the corner of the air inlet pipe (2), the inlet end of the large particle drain pipe (23) is communicated with the air inlet pipe (2), and the outlet end of the large particle drain pipe (23) extends downwards to the lower side of the inner cavity of the shell (1).
7. A dust, paint mist, fume exhaust gas purifying exhaust fan according to claim 1, characterized in that: the motor is fixed on the rear end face of the machine shell (1) through the motor mounting plate (30), and the motor mounting plate (30) is sealed with the rear end face of the machine shell (1) through the annular soft sealing connecting canvas (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110513307A (en) | 2019-11-29 |
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