CN109140550B - Waste gas filtering and purifying device - Google Patents

Waste gas filtering and purifying device Download PDF

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Publication number
CN109140550B
CN109140550B CN201810894352.4A CN201810894352A CN109140550B CN 109140550 B CN109140550 B CN 109140550B CN 201810894352 A CN201810894352 A CN 201810894352A CN 109140550 B CN109140550 B CN 109140550B
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filtering
purifying
waste gas
fan
box
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CN201810894352.4A
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CN109140550A (en
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车国容
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Shanghai Jingyi Environmental Protection Technology Co., Ltd
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Shanghai Jingyi Environmental Protection Technology Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2035Arrangement or mounting of filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of devices for separating particles from gases or vapours

Abstract

The invention relates to the technical field of air purification equipment, in particular to a waste gas filtering and purifying device which comprises a shell and a filtering and purifying mechanism, wherein an air suction port is arranged at the bottom of the shell, an air suction cover is arranged on the air suction port, a primary filter screen is arranged in the air suction cover, the filtering and purifying mechanism comprises a communicating pipeline, a first fan, a filter box, a second fan and a purifying box, the communicating pipeline is provided with an elbow, and a spiral airflow cavity is arranged on the elbow. The waste gas is primarily filtered and purified by the primary filter screen to remove large-particle impurities in the waste gas, then the oil smoke in the waste gas is adsorbed by the action of adsorption cilia on the inner wall of the spiral airflow cavity, impurities and organic matters in the waste gas are filtered and adsorbed by the filter component in the filter box, and small-particle impurities in the waste gas are filtered and purified by the purification box, so that the filtering and purifying process of the waste gas containing the oil smoke is realized, and the filter box has important significance for protecting the environment and building a green ecological environment.

Description

Waste gas filtering and purifying device
Technical Field
The invention relates to the technical field of air purification equipment, in particular to a filtering and purifying device for filtering and purifying oily fume-containing waste gas.
Background
Cooking is an essential content for every family, and in order to eat a table of delicious dishes, people often install a smoke exhaust ventilator or an air exchange fan in a kitchen firstly by using frying, stir-frying, cooking and frying … …, so that oil smoke and waste gas are discharged from the room in time. The cooking fume exhauster or the ventilation fan is started in advance when cooking, and is turned off after 5-10 minutes after cooking, so that unhealthy oil fume is exhausted outdoors. In the kitchen, the waste gas is mainly edible oil and oil smoke generated in the food heating process. During cooking, the water foam in the dish is vaporized and expanded rapidly, and part of the water foam is condensed into mist and forms visible oil smoke together with the oil smoke. The oil fume is mainly water mist, and only a small amount of oil gas and oil fume which are not infiltrated with the water mist are clamped at the upper part. In addition, there is some pungent taste to the cooking fumes exhaust. From the morphology, the oil smoke exhaust gas includes two types, particulate matter and gaseous pollutants. The particle size of the particles is small, generally less than 10 μm, and the particles are divided into solid and liquid, and the liquid has high viscosity. Off-flavors are mainly caused by gaseous pollutants.
The waste gas emitted from the kitchen contains coal waste gas and oil smoke smell, and the main components of the coal waste gas are carbon monoxide and sulfur dioxide, which are harmful to human bodies. In the kitchen oil smoke waste gas, the main component CO of the fuel waste gas enters the blood through a respiratory tract, and generates carboxyhemoglobin after being subjected to affinity with hemoglobin in the blood, thereby weakening the function of oxygen delivery of the blood to various tissues. Resulting in hypoxia, damage to central nerve, and hypomnesis. NOx, S02The air is harmful to human bodies and can generate strong stimulation to respiratory tracts; the oil fume and the exhaust gas are mainly harmfulThey are classified into butadiene, ethylene acid high molecular polymer and benzo (a) pyrene, which have carcinogenic effects on human bodies.
In the existing oil fume purification equipment, as disclosed in the Chinese patent application publication No. CN207412960U, an oil fume separation device for an oil fume separator comprises a separation cylinder and a motor for driving an oil fume separation net disc to rotate, wherein a pair of oil fume separation net discs are arranged in the separation cylinder; the oil smoke separating net disc comprises a mounting disc, a mounting ring and a plurality of flow guide spokes, wherein the middle of the mounting disc is used for being connected with the motor, the mounting ring is arranged outside the mounting disc, the flow guide spokes are arranged between the mounting disc and the mounting ring, and two flow guide spokes are arranged in each spoke group; one end of each of the two guide spokes in the same spoke group is intersected with the orthographic projection of the mounting disc, and the other end of each of the two guide spokes is arranged on the mounting ring at intervals; the device can improve the air input, and then has improved the oil smoke separation efficiency of oil smoke separation net dish, but because the filtration purification effect is relatively poor, it is weak to last working ability.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a filtering and purifying device for filtering and purifying oily fume waste gas, the structure is reasonable, the purification is high-efficient, the primary filter screen is utilized to carry out primary filtration and purification on the waste gas, large particle impurities in the waste gas are removed, then the waste gas enters the communicating pipeline, because at least one elbow is arranged in the communicating pipeline and the spiral airflow cavity is arranged on the elbow, when the waste gas passes through the elbow, part of the waste gas enters the spiral airflow cavity and is adsorbed by the adsorption cilia on the inner wall of the spiral airflow cavity after the oil smoke in the waste gas is adsorbed, the filter assembly in the filter box is reused for filtering and adsorbing impurities and organic matters in the waste gas, the purification box is used for filtering and purifying small-particle impurities in the waste gas, the filtering and purifying process of the waste gas containing the oil smoke is realized, and the filter box has important significance for protecting the environment safety and building a green ecological environment.
The purpose of the invention is realized by the following technical scheme:
a waste gas filtering and purifying device comprises a shell and a filtering and purifying mechanism, wherein an air suction port is arranged at the bottom of the shell, an air suction cover is arranged on the air suction port, a primary filter screen is arranged in the air suction cover, the filtering and purifying mechanism comprises a communicating pipeline, a first fan, a filter box, a second fan and a purifying box, two ends of the communicating pipeline are respectively communicated with the air suction cover and the filter box, the communicating pipeline is provided with at least one elbow, a spiral airflow cavity is arranged on the elbow, adsorption cilia are uniformly arranged on the inner wall of the spiral airflow cavity and used for adsorbing oil smoke in waste gas, the first fan is provided with a communicating pipeline and used for leading the waste gas in the air suction cover into the filter box through the communicating pipeline, a filter component is arranged in the filter box and used for filtering and adsorbing impurities and organic matters in the waste gas, the inlet of the second fan is communicated with the filter box pipeline, the outlet of the second fan is communicated with the purifying box pipeline, the inlet pipeline port of the second fan and the port of the communicating pipeline are respectively arranged at two sides of the filtering component, the purifying box is used for filtering and purifying small particle impurities in waste gas, the top of the shell is provided with a gas outlet, and the gas outlet is communicated with the purifying box pipeline.
Further, the primary filter screen is of an inverted cone structure. In the actual use process, when the oily fume-containing waste gas is required to be filtered and purified, the filtering and purifying device is arranged in the environment, then the first fan and the second fan are controlled to start working, the waste gas in the environment enters the air suction cover by utilizing the first fan, the primary filtering and purifying are carried out on the waste gas by the primary filter screen to remove large granular impurities in the waste gas, then the waste gas enters the communicating pipeline, because at least one elbow is arranged in the communicating pipeline, and the spiral airflow cavity is arranged on the elbow, when the waste gas passes through the elbow, part of the waste gas enters the spiral airflow cavity, the waste gas flows back to the communicating pipeline after absorbing the oily fume in the waste gas by the action of the adsorption cilium on the inner wall of the spiral airflow cavity, and then the waste gas enters the filter box along the communicating pipeline, the filtering component in the filter box is utilized to filter and adsorb impurities and organic matters in the waste gas, and, and the waste gas filtered and adsorbed by the filtering component is introduced into the purifying box, small particle impurities in the waste gas are filtered and purified by the purifying box and then discharged from the gas outlet, so that the filtering and purifying process of the oily fume waste gas is realized.
Furthermore, the adsorption cilia are made of photocatalyst materials, and a first ultraviolet illumination unit is arranged in the spiral airflow cavity. Through the absorption cilia that sets up on the spiral air flow intracavity wall into the photocatalyst material to set up first ultraviolet illumination unit in the spiral air flow intracavity, utilize first ultraviolet illumination unit and the cooperation of absorption cilia that has the photocatalyst function, make the absorption cilia not only can adsorb impurity, can also continuously adsorb and decompose the organic matter, improve the filtration purification efficiency and the filtering purification effect of waste gas.
Further, the first ultraviolet irradiation unit is connected with the controller.
Furthermore, the filtering component comprises an upper fixing net, a blocking filter net and a lower fixing net, the upper fixing net is arranged above the lower fixing net, the upper fixing net and the lower fixing net divide the filtering box into a pre-filtering area, a filtering area and a post-filtering area which are sequentially arranged from bottom to top, the communicating pipeline is communicated with the pre-filtering area, the inlet pipeline of the second fan is communicated with the post-filtering area, and the blocking filter net is arranged in the filtering area. Through setting up the intercommunication pipeline and straining the preceding district intercommunication, with the inlet pipeline setting of second fan and strain the back district intercommunication, will block the filter screen setting in the filtering area, make the waste gas that the intercommunication pipeline introduced get into the filtering area of rose box bottom in, let waste gas filter purification through filtering component from bottom to top, make the impurity in the waste gas intercepted by filtering component, and drop to the rose box bottom under the action of gravity, reduce impurity and to filtering component's jam, thereby improve filtering component's filtration purification efficiency and filtration purification effect.
Furthermore, the blocking filter screen comprises a first micron filter screen layer, a first activated carbon filler layer, a heavy metal adsorption filler layer, a second activated carbon filler layer and a second micron filter screen layer which are sequentially arranged from top to bottom.
Furthermore, a micron-sized isolation net is further arranged in the post-filtering area, and the micron-sized isolation net is provided with an inlet pipeline port of the second fan and used for filtering impurities entering the second fan. The micron-sized isolation net is arranged at the port of the inlet pipeline of the second fan, waste gas entering the second fan is filtered and intercepted by the micron-sized isolation net, and large-particle impurities are intercepted in the filter box.
Furthermore, the filter box is fixedly connected with the inner wall of the shell, an inlet and an outlet are arranged on the side wall of the shell where the filter box is positioned, the inlet and the outlet penetrate through the side wall of the filter box to be communicated with the filter area, the side wall of the shell is also provided with a cleaning box, the filtering and purifying device also comprises a cleaning mechanism, the cleaning mechanism comprises a driving device, a driving rod, a front push plate, a rear push plate, a cleaning liquid pipe and a liquid discharge pipe, the front push plate and the rear push plate are respectively arranged at two ends of the blocking filter screen, the front push plate is arranged close to the driving device, the driving device is arranged on the side wall of the cleaning box far away from the inlet and the outlet, two ends of the driving rod are respectively connected with the driving device and the front push plate, the driving device is used for controlling the front push plate to move left and right, the cleaning liquid pipe is arranged at the top of the cleaning box, the cleaning liquid pipe is used for introducing cleaning liquid into the cleaning box, and the liquid discharge pipe is arranged at the bottom of the cleaning box. In the actual use process, in order to improve the continuous working capacity of the blocking filter screen, a cleaning box and a cleaning mechanism are respectively arranged, a driving device of the cleaning mechanism is utilized to control the front push plate to move left and right, and the front push plate and the rear push plate are respectively arranged on the left side and the right side of the blocking filter screen, so that the front push plate, the rear push plate and the blocking filter screen form a whole, and the rear push plate and the blocking filter screen respectively move synchronously along with the front push plate in the moving process of the front push plate; in the process of filtering and purifying the waste gas by using the blocking filter screen, along with the increase of the working time, the blocking filter screen filters more adsorbed impurities, and along with the increase of the impurities on the blocking filter screen, the impurities are easy to accumulate and block the blocking filter screen, so that the filtering and purifying efficiency and the filtering and purifying effect of the blocking filter screen are reduced; the driving device is arranged, the driving device is used for controlling the front push plate to move towards the driving device, so that the blocking filter screen moves into the cleaning box, then cleaning liquid is introduced through the cleaning liquid pipe, the blocking filter screen is washed by the cleaning liquid, impurities adsorbed and accumulated on the blocking filter screen are cleaned and removed, and the impurities are taken away with the cleaning liquid and are discharged from the liquid discharge pipe; after the filter screen is cleaned, the driving device is controlled to work, the filter screen is pushed back into the filter box, the waste gas is continuously filtered and purified, and the continuous working capacity of the filter screen is improved.
Further, the driving device is connected with the controller.
Further, the upper end and the lower end of the rear push plate are respectively provided with a sliding block, the upper fixing net and the lower fixing net are respectively provided with a sliding groove, and the sliding blocks are matched with the sliding grooves. The upper end and the lower end of the rear push plate are respectively provided with the sliding block, the upper fixing net and the lower fixing net are respectively provided with the sliding groove, the sliding block is matched with the sliding groove to fix the moving path of the rear push plate, the contact area of the rear push plate with the upper fixing net and the lower fixing net is reduced, and the friction force of the rear push plate in the moving process is reduced. Preferably, gaps are respectively reserved between the blocking filter screen and the upper fixing screen and between the blocking filter screen and the lower fixing screen.
Furthermore, the upper side and the lower side of the blocking filter screen are respectively provided with a supporting net layer, and two ends of the supporting net layer are respectively connected with the front push plate and the rear push plate. The supporting net layers are arranged on the upper side and the lower side of the blocking filter screen respectively, so that the bearing capacity of the blocking filter screen is enhanced by the supporting net layers, the blocking filter screen is prevented from being damaged in the cleaning process in the cleaning box, and the service life of the equipment is prolonged.
Further, the blocking filter net freely passes through the inlet and the outlet.
Furthermore, still be provided with second ultraviolet irradiation unit on wasing the incasement wall, the active carbon filler surface in first active carbon filler layer, the second active carbon filler layer all loads photocatalyst material. When the blocking filter screen is pushed into the cleaning box for cleaning, the second ultraviolet illumination unit works to be cooperated with the photocatalyst active carbon filler in the first active carbon filler layer and the second active carbon filler layer to decompose the adsorbed macromolecular organic matters and regenerate the adsorption capacity of the first active carbon filler layer and the second active carbon filler layer.
Further, the second ultraviolet irradiation unit is connected with the controller.
Furthermore, a plasma air purification unit and a nano filter screen are sequentially arranged in the purification box along the air flowing direction.
Further, the plasma air purification unit is connected with the controller.
Further, still be provided with the control box in the casing, be provided with controller and power in the control box, the controller is first fan, second fan, power connection respectively.
The invention has the beneficial effects that: the waste gas filtering and purifying device provided by the invention utilizes the primary filter screen to primarily filter and purify waste gas to remove large particle impurities in the waste gas, then the waste gas enters the communicating pipeline, at least one elbow is arranged in the communicating pipeline, and the spiral airflow cavity is arranged on the elbow, so that when the waste gas passes through the elbow, part of the waste gas enters the spiral airflow cavity, after oil smoke in the waste gas is adsorbed by the adsorption cilium effect on the inner wall of the spiral airflow cavity, the filtering component in the filter box is utilized to filter and adsorb impurities and organic matters in the waste gas, and the purifying box is utilized to filter and purify small particle impurities in the waste gas, thereby realizing the filtering and purifying process of the waste gas containing the oil smoke, and having important significance for protecting the environment and building a green ecological environment.
Drawings
FIG. 1 is a schematic view of the structure of a filtration purification apparatus according to the present invention;
FIG. 2 is a cross-sectional view of a filtration purification apparatus of the present invention;
FIG. 3 is a cross-sectional view of a filtration tank of the present invention;
FIG. 4 is a schematic view of a barrier screen according to the present invention;
FIG. 5 is a cross-sectional view of the purification tank of the present invention;
FIG. 6 is a cross-sectional view of the control box of the present invention;
figure 7 is a cross-sectional view of the elbow of the invention;
FIG. 8 is a cross-sectional view of a basic reaction unit of the present invention;
in the figure, 1-a shell, 2-an air suction cover, 3-a primary filter screen, 4-a communication pipeline, 5-a first fan, 6-a filter box, 7-a second fan, 8-a purifying box, 9-an elbow, 10-a spiral airflow cavity, 11-adsorption cilium, 12-an air outlet, 13-a first ultraviolet illumination unit, 14-an upper fixing screen, 15-a lower fixing screen, 16-a blocking filter screen, 17-a first micron filter screen layer, 18-a first active carbon packing layer, 19-a heavy metal adsorption packing layer, 20-a second active carbon packing layer, 21-a second micron filter screen layer, 22-a micron isolating screen, 23-a cleaning box, 24-a driving device, 25-a driving rod, 26-a front push plate and 27-a rear push plate, 28-slide block, 29-supporting net layer, 30-cleaning liquid pipe, 31-liquid discharge pipe, 32-second ultraviolet light unit, 33-plasma air purification unit, 34-nano filter screen, 35-control box, 36-controller, 37-power supply, 38-electrode circular tube and 39-electrode wire.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
As shown in fig. 1 to 8, a waste gas filtering and purifying device comprises a housing 1 and a filtering and purifying mechanism, wherein an air suction port is arranged at the bottom of the housing 1, an air suction hood 2 is arranged on the air suction port, a primary filter screen 3 is arranged in the air suction hood 2, the filtering and purifying mechanism comprises a communicating pipeline 4, a first fan 5, a filter box 6, a second fan 7 and a purifying box 8, two ends of the communicating pipeline 4 are respectively communicated with the air suction hood 2 and the filter box 6, the communicating pipeline 4 is provided with at least one elbow 9, a spiral airflow cavity 10 is arranged on the elbow 9, adsorbing cilia 11 are uniformly arranged on the inner wall of the spiral airflow cavity 10, the adsorbing cilia 11 are used for adsorbing oil smoke in waste gas, the first fan 5 is arranged on the communicating pipeline 4, the first fan 5 is used for introducing the waste gas in the air suction hood 2 into the filter box 6 through the communicating pipeline 4, the improved waste gas purifying device is characterized in that a filtering component is arranged in the filtering box 6 and used for filtering impurities and organic matters in adsorbed waste gas, an inlet of the second fan 7 is communicated with the filtering box 6 through a pipeline, an outlet of the second fan 7 is communicated with the purifying box 8 through a pipeline, an inlet pipeline port of the second fan 7 and a port of the communicating pipeline 4 are respectively arranged on two sides of the filtering component, the purifying box 8 is used for filtering and purifying small-particle impurities in the waste gas, a gas outlet 12 is formed in the top of the shell 1, and the gas outlet 12 is communicated with the purifying box 8 through a pipeline.
Specifically, the primary filter screen 3 is of an inverted conical cylinder structure. In the practical use process, when the oily fume-containing waste gas needs to be filtered and purified, the filtering and purifying device is arranged in the environment, then the first fan 5 and the second fan 7 are controlled to start working, the waste gas in the environment enters the air suction cover 2 by utilizing the first fan 5, the primary filtering and purifying are carried out on the waste gas through the primary filter screen 3, large granular impurities in the waste gas are removed, then the waste gas enters the communicating pipeline 4, because at least one elbow 9 is arranged in the communicating pipeline 4, and the spiral airflow cavity 10 is arranged on the elbow 9, when the waste gas passes through the elbow 9, part of the waste gas enters the spiral airflow cavity 10 and passes through the action of the adsorption cilia 11 on the inner wall of the spiral airflow cavity 10, after the oily fume in the waste gas is adsorbed, the waste gas flows back to the communicating pipeline 4 and enters the filter box 6 along the communicating pipeline 4, and the filter component arranged in the filter box 6 is utilized to filter and adsorb impurities and organic matters, then, the waste gas filtered and adsorbed by the filtering component is introduced into the purifying box 8 by the action of the second fan 7, and small particle impurities in the waste gas are filtered and purified by the purifying box 8 and then discharged from the gas outlet 12, so that the filtering and purifying process of the waste gas containing the oil smoke is realized.
Specifically, the adsorption cilia 11 are made of photocatalyst, and the spiral airflow cavity 10 is internally provided with a first ultraviolet illumination unit 13. Through the absorption cilia 11 with on the spiral air flow chamber 10 inner wall setting up to the absorption cilia of photocatalyst material to set up first ultraviolet illumination unit 13 in spiral air flow chamber 10, utilize first ultraviolet illumination unit 13 and the cooperation of absorption cilia 11 with photocatalyst function, make absorption cilia 11 not only can adsorb impurity, can also continuously adsorb and decompose the organic matter, improve the filtration purification efficiency and the filtering and purifying effect of waste gas.
Specifically, the first ultraviolet irradiation unit 13 is connected to the controller 36.
Specifically, the filtering component comprises an upper fixing net 14, a blocking filter screen 16 and a lower fixing net 15, the upper fixing net 14 is arranged above the lower fixing net 15, the upper fixing net 14 and the lower fixing net 15 divide the filtering box 6 into a pre-filtering area, a filtering area and a post-filtering area which are sequentially arranged from bottom to top, the communicating pipeline 4 is communicated with the pre-filtering area, an inlet pipeline of the second fan 7 is communicated with the post-filtering area, and the blocking filter screen 16 is arranged in the filtering area. Through set up to communicate the pipeline 4 into with straining the preceding district intercommunication, set up the inlet pipeline of second fan 7 into with strain the back district intercommunication, will block filter screen 16 and set up in the filtering area, make the waste gas that communicates the pipeline 4 and introduce get into the preceding district of straining of 6 bottoms of rose box, let waste gas carry out filtration purification through filtering component from bottom to top, make the impurity in the waste gas intercepted by filtering component, and drop to 6 bottoms of rose box under the action of gravity, reduce impurity and to filtering component's jam, thereby improve filtering component's filtration purification efficiency and filtering purification effect.
Specifically, the blocking filter screen 16 includes a first micron filter screen layer 17, a first activated carbon filler layer 18, a heavy metal adsorption filler layer 19, a second activated carbon filler layer 20, and a second micron filter screen layer 21, which are sequentially arranged from top to bottom.
Specifically, a micron-sized isolation net 22 is further arranged in the post-filtration region, and the micron-sized isolation net 22 is arranged at an inlet pipeline port of the second fan 7 and used for filtering impurities entering the second fan 7. The micron-sized isolation net 22 is arranged at the inlet pipeline port of the second fan 7, and the micron-sized isolation net 22 is used for filtering and intercepting the waste gas entering the second fan 7, so that large-particle impurities are intercepted in the filter box 6.
Specifically, the filter box 6 is fixedly connected with the inner wall of the casing 1, the side wall of the casing 1 where the filter box 6 is located is provided with an inlet and an outlet, the inlet and the outlet are communicated with a filtering area by penetrating through the side wall of the filter box 6, the outer side wall of the casing 1 is also provided with a cleaning box 23, the filtering and purifying device further comprises a cleaning mechanism, the cleaning mechanism comprises a driving device 24, a driving rod 25, a front push plate 26, a rear push plate 27, a cleaning liquid pipe 30 and a liquid discharge pipe 31, the front push plate 26 and the rear push plate 27 are respectively arranged at the front end and the rear end of the blocking filter screen 16, the front push plate 26 is arranged close to the driving device 24, the driving device 24 is arranged on the outer side wall of the cleaning box 23 far away from the inlet and the outlet, the two ends of the driving rod 25 are respectively connected with the driving device 24 and the front push plate, the cleaning liquid pipe 30 is used for introducing a cleaning liquid into the cleaning tank 23, and the drain pipe 31 is provided at the bottom of the cleaning tank 23. In the actual use process, in order to improve the continuous working capacity of the blocking filter screen 16, a cleaning box 23 and a cleaning mechanism are respectively arranged, a driving device 24 of the cleaning mechanism is used for controlling a front push plate 26 to move left and right, and the front push plate 26 and a rear push plate 27 are respectively arranged at the left end and the right end of the blocking filter screen 16, so that the front push plate 26, the rear push plate 27 and the blocking filter screen 16 form a whole, and in the moving process of the front push plate 26, the rear push plate 27 and the blocking filter screen 16 respectively move synchronously along with the front push plate 26; in the process of filtering and purifying the waste gas by using the blocking filter screen 16, along with the increase of the working time, the blocking filter screen 16 filters more adsorbed impurities, and along with the increase of the impurities on the blocking filter screen 16, the impurities are easy to accumulate to block the blocking filter screen 16, so that the filtering and purifying efficiency and the filtering and purifying effect of the blocking filter screen 16 are reduced; by arranging the driving device 24, the driving device 24 is used for controlling the front push plate 26 to move towards the driving device 24, so that the blocking filter screen 16 is moved into the cleaning box 23, then cleaning liquid is introduced through the cleaning liquid pipe 30, the blocking filter screen 16 is washed by the cleaning liquid, impurities adsorbed and accumulated on the blocking filter screen 16 are cleaned and removed, and the impurities are taken away with the cleaning liquid and are discharged from the liquid discharge pipe 31; after the filter screen 16 is cleaned, the driving device 24 is controlled to work, the filter screen 16 is pushed back into the filter box 6, the waste gas is continuously filtered and purified, and the continuous working capacity of the filter screen 16 is improved.
In particular, the drive device 24 is connected to a controller 36.
Specifically, the upper end and the lower end of the rear push plate 27 are respectively provided with a slide block 28, the upper fixing net 14 and the lower fixing net 15 are respectively provided with a slide groove, and the slide blocks 28 are matched with the slide grooves. The upper end and the lower end of the rear push plate 27 are respectively provided with the sliding blocks 28, the upper fixing net 14 and the lower fixing net 15 are respectively provided with the sliding grooves, the sliding blocks 28 are matched with the sliding grooves to fix the moving path of the rear push plate 27, the contact area of the rear push plate 27 with the upper fixing net 14 and the lower fixing net 15 is reduced, and the friction force of the rear push plate 27 in the moving process is reduced. Preferably, a gap is left between the blocking screen 16 and each of the upper fixing screen 14 and the lower fixing screen 15.
Specifically, the upper side and the lower side of the blocking screen 16 are respectively provided with a support screen layer 29, and two ends of the support screen layer 29 are respectively connected with the front push plate 26 and the rear push plate 27. The supporting net layers 29 are respectively arranged on the upper side and the lower side of the blocking filter screen 16, so that the bearing capacity of the blocking filter screen 16 is enhanced by the supporting net layers 29, the blocking filter screen 16 is prevented from being damaged in the cleaning process in the cleaning box 23, and the service life of the equipment is prolonged.
Specifically, the screen 16 can pass freely through the inlet and outlet.
Specifically, the inner wall of the cleaning box 23 is further provided with a second ultraviolet irradiation unit 32, and photocatalyst materials are loaded on the surfaces of the activated carbon fillers in the first activated carbon filler layer 18 and the second activated carbon filler layer 20. When the blocking filter screen 16 is pushed into the cleaning box 23 for cleaning, the second ultraviolet illumination unit 32 works to cooperate with the photocatalyst activated carbon fillers in the first activated carbon filler layer 18 and the second activated carbon filler layer 20 to decompose the adsorbed macromolecular organic matters and restore the adsorption capacity of the first activated carbon filler layer 18 and the second activated carbon filler layer 20.
Specifically, the second ultraviolet irradiation unit 32 is connected to the controller 36.
Specifically, a plasma air purification unit 33 and a nano filter 34 are sequentially disposed in the purification box 8 along the air flowing direction. Preferably, the plasma air purification unit 33 includes a plurality of basic reaction units, and the basic reaction units are composed of a wire electrode 39 and a circular electrode tube 38, and the circular electrode tube 38 uses the wire electrode 39 as a central axis.
Specifically, the plasma air purification unit 33 is connected to a controller 36.
Specifically, a control box 35 is further arranged in the housing 1, a controller 36 and a power supply 37 are arranged in the control box 35, and the controller 36 is connected with the first fan 5, the second fan 7 and the power supply 37 respectively.
When in use, a user places the filtering and purifying device in an air environment rich in oil smoke waste gas, then controls the first fan 5 and the second fan 7 to start working, utilizes the first fan 5 to make the waste gas in the environment enter the air suction cover 2, carries out primary filtering and purifying on the waste gas through the primary filter screen 3 to remove large particle impurities in the waste gas, then the waste gas enters the communicating pipeline 4, because at least one elbow 9 is arranged in the communicating pipeline 4, and the spiral airflow cavity 10 is arranged on the elbow 9, when the waste gas passes through the elbow 9, part of the waste gas enters the spiral airflow cavity 10 and passes through the action of the adsorption cilia 11 on the inner wall of the spiral airflow cavity 10, after absorbing the oil smoke in the waste gas, the waste gas flows back to the communicating pipeline 4 and enters the filter box 6 along the communicating pipeline 4, and the impurities and organic matters in the adsorbed waste gas are filtered and adsorbed by the filter component in the filter box 6, then, the waste gas filtered and adsorbed by the filtering component is introduced into the purifying box 8 by the action of the second fan 7, small particle impurities in the waste gas are filtered and purified by the purifying box 8 and then discharged from the gas outlet 12, so that the filtering and purifying process of the waste gas containing the oil smoke is realized; in addition, by arranging the driving device 24, the driving device 24 is used for controlling the front push plate 26 to move towards the driving device 24, so that the blocking filter screen 16 is moved into the cleaning box 23, then cleaning liquid is introduced through the cleaning liquid pipe 30, the blocking filter screen 16 is washed by the cleaning liquid, impurities adsorbed and accumulated on the blocking filter screen 16 are cleaned and removed, and the impurities are taken away with the cleaning liquid and are discharged from the liquid discharge pipe 31; after the filter screen 16 is cleaned, the driving device 24 is controlled to work, the filter screen 16 is pushed back into the filter box 6, the waste gas is continuously filtered and purified, and the continuous working capacity of the filter screen 16 is improved.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. A waste gas filtering and purifying device comprises a shell and a filtering and purifying mechanism, wherein an air suction port is arranged at the bottom of the shell, an air suction cover is arranged on the air suction port, and a primary filter screen is arranged in the air suction cover, the filtering and purifying mechanism comprises a communicating pipeline, a first fan, a filter box, a second fan and a purifying box, two ends of the communicating pipeline are respectively communicated with the air suction cover and the filter box, at least one elbow is arranged on the communicating pipeline, a spiral airflow cavity is arranged on the elbow, adsorption cilia are arranged on the inner wall of the spiral airflow cavity and used for adsorbing oil smoke in waste gas, the first fan is arranged on the communicating pipeline, the first fan is used for leading the waste gas in the air suction cover into the filter box through the communicating pipeline, a filter component is arranged in the filter box and used for filtering and adsorbing impurities and organic matters in the waste gas, the inlet of the second fan is communicated with the filter box pipeline, the outlet of the second fan is communicated with the purifying box pipeline, the inlet pipeline port of the second fan and the port of the communicating pipeline are respectively arranged at two sides of the filtering component, the purifying box is used for filtering and purifying small particle impurities in waste gas, and the top of the shell is provided with an air outlet.
2. The exhaust gas filtering and purifying device as claimed in claim 1, wherein the primary filter screen has an inverted conical cylinder structure.
3. The exhaust gas filtering and purifying device according to claim 1, wherein the adsorbing cilia are made of photocatalyst, and a first ultraviolet light unit is disposed in the spiral airflow chamber.
4. The exhaust gas filtering and purifying device as claimed in claim 1, wherein the filtering assembly includes an upper fixing net, a blocking filter net and a lower fixing net, the upper fixing net is disposed above the lower fixing net, the upper fixing net and the lower fixing net divide the filtering box into a pre-filtering area, a filtering area and a post-filtering area which are sequentially disposed from bottom to top, the communication pipeline is communicated with the pre-filtering area, the inlet pipeline of the second fan is communicated with the post-filtering area, and the blocking filter net is disposed in the filtering area.
5. The exhaust gas filtering and purifying device according to claim 4, wherein the blocking filter screen comprises a first micron filter screen layer, a first activated carbon filler layer, a heavy metal adsorption filler layer, a second activated carbon filler layer and a second micron filter screen layer which are sequentially arranged from top to bottom.
6. The exhaust gas filtering and purifying device as claimed in claim 4, wherein a micron-sized separation net is further disposed in the post-filtering region, and the micron-sized separation net is provided with an inlet pipeline port of the second fan and is used for filtering impurities entering the second fan.
7. The exhaust gas filtering and purifying device as claimed in claim 1, wherein a control box is further disposed in the housing, a controller and a power supply are disposed in the control box, and the controller is respectively connected to the first fan, the second fan and the power supply.
CN201810894352.4A 2018-08-08 2018-08-08 Waste gas filtering and purifying device Active CN109140550B (en)

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CN109550329A (en) * 2019-01-10 2019-04-02 合肥职业技术学院 A kind of oil smoke processing environmental protection equipment
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