CN216537605U - Waste gas internal circulation filtration system - Google Patents
Waste gas internal circulation filtration system Download PDFInfo
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- CN216537605U CN216537605U CN202122402196.5U CN202122402196U CN216537605U CN 216537605 U CN216537605 U CN 216537605U CN 202122402196 U CN202122402196 U CN 202122402196U CN 216537605 U CN216537605 U CN 216537605U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The utility model discloses a waste gas internal circulation filtering system, which relates to the technical field of spraying waste gas purification, and comprises a spraying cabinet, a cyclone centrifugal purification tower, a Venturi filtering cabinet and a circulating air cabinet which are connected in sequence, wherein the waste gas carries out centrifugal motion in the cyclone centrifugal purification tower and is used for centrifugally attaching solid matters in the waste gas to the cyclone centrifugal purification tower, the waste gas is subjected to water film filtering in the Venturi filtering cabinet and is used for filtering the solid matters in the waste gas to enter the waste gas of the circulating air cabinet, one part of the waste gas is conveyed to the spraying cabinet through a first air supply port for continuous spraying, and the other part of the waste gas is conveyed to a next processing system through a second air supply port for processing. Effectively improving the production efficiency under the condition of ensuring good purification effect on the waste gas.
Description
Technical Field
The utility model relates to the technical field of spraying waste gas purification, in particular to a waste gas internal circulation filtering system.
Background
As is well known, the main problems of spraying waste gas in environmental protection treatment are that the volatilized solvent and highly dispersed paint mist seriously pollute the environment and endanger the health of human bodies.
In the treatment of the solvent volatilized from the spraying waste gas, at present, the solvent volatilized from the spraying waste gas (mainly VOC) is combusted through heat storage oxidation to generate water and carbon dioxide mainly by adsorption and desorption of activated carbon and RCO catalytic combustion or zeolite rotating wheel and RTO catalytic combustion, so that the pollution of the solvent volatilized from the spraying waste gas to the environment can be basically solved.
Because the main pollutants in the highly dispersed paint mist in the spraying waste gas are solid matters (particles), the treatment is mainly carried out in a filtering mode of a filter plate at present, and a filtering mode of carrying out multi-layer filtering on the solid matters is developed under continuous innovation. Admittedly, the filter plate has a good effect on filtering solid substances, but inevitably, the problem of blockage always occurs by adopting a filter plate filtering mode, namely, when the filter plate is used for a certain period, the air inlet surface of the filter plate is easily covered by the solid substances in a large area, so that the circulation rate of gas is greatly reduced, and the negative effect is that the power consumption is greatly increased; the filter plates have to be replaced and cleaned manually and regularly, so that the whole spraying exhaust system is in a pause state, and the production progress is slowed down. Therefore, in the treatment of the spraying waste gas, particularly in the filtration of solid matters in the paint mist, the situations of good filtration effect and high production efficiency are always encountered.
SUMMERY OF THE UTILITY MODEL
The present invention aims to overcome the defects of the prior art and provide a technical solution to the above problems.
In order to achieve the purpose, the utility model provides the following technical scheme: an internal circulation filtering system for waste gas comprises a spraying cabinet, a cyclone centrifugal purification tower, a Venturi water filtering cabinet and a circulating air cabinet; the spraying cabinet is provided with a fresh air inlet, a spraying return air inlet and a spraying exhaust port; the cyclone centrifugal purifying tower is provided with a cyclone air inlet and a cyclone air outlet; the Venturi filtering water tank is provided with a water tank air inlet and a water tank air outlet; the circulating air cabinet is provided with an air inlet of the air cabinet, a first air supply port and a second air supply port; a spraying exhaust port of the spraying cabinet is connected with a cyclone air inlet of a cyclone centrifugal purification tower, a cyclone air outlet of the cyclone centrifugal purification tower is connected with a water cabinet air inlet of a Venturi filtering water cabinet, a water cabinet air outlet of the Venturi filtering water cabinet is communicated with an air cabinet air inlet of a circulating air cabinet, and a first air supply port of the circulating air cabinet is connected with a spraying return air port of the spraying cabinet; waste gas generated by spraying of the spraying cabinet is sent to the cyclone centrifugal purification tower through the spraying exhaust port, and the waste gas carries out centrifugal motion in the cyclone centrifugal purification tower and is used for centrifugally attaching solid matters in the waste gas to the cyclone centrifugal purification tower; the waste gas is subjected to water membrane filtration in the Venturi filtration cabinet and is used for filtering solid matters in the waste gas; waste gas is carried out the water film and is filtered the back in venturi water filtration cabinet and reachs the circulated air cabinet through wind cabinet air inlet, gets into the waste gas in the circulated air cabinet: one part is sent to the spraying cabinet through the first air supply port to be sprayed continuously, and the other part is sent to the next processing system through the second air supply port to be processed.
As a further scheme of the utility model: waste gas entering the circulating air cabinet: 80% of the gas is sent to the spraying cabinet through the first gas supply port to be sprayed continuously, and 20% of the gas is sent to the next processing system through the second gas supply port to be processed.
As a further scheme of the utility model: a first fan is arranged at a first air supply port of the circulating air cabinet, and the air quantity of the waste gas sent to the spraying cabinet by the circulating air cabinet through the first air supply port is controlled by the first fan; and a second fan is arranged at a second air supply port of the circulating air cabinet, and the quantity of the waste gas delivered to the next treatment system by the circulating air cabinet through the second air supply port is controlled by the second fan.
As a further scheme of the utility model: the cyclone centrifugal purification tower comprises a first centrifugal bin with a cylindrical inner cavity and a second centrifugal bin with a cylindrical inner cavity; the cyclone air inlet is positioned on the first centrifugal bin; the cyclone air outlet is positioned on the second centrifugal bin; a first communication port is formed in the first centrifugal bin; a second communicating port is arranged on the second centrifugal bin; the first communication port is communicated with the second communication port.
As a further scheme of the utility model: the cyclone air inlet is positioned on the side surface of the first centrifugal bin; a rotational flow reversing pipe matched with the cyclone air inlet is fixed in the first centrifugal bin; waste gas enters the first centrifugal bin from the cyclone air inlet and rotates around the outer side of the cyclone reversing pipe; an opening at one end of the rotational flow reversing pipe is a first communicating opening, and an opening at the other end of the rotational flow reversing pipe is communicated with a second communicating opening; one end of the second centrifugal bin is provided with a second communicating port; the cyclone air outlet is positioned on the side surface of the second centrifugal bin and is tangent to the side surface of the second centrifugal bin; an adjusting piece is fixed in the second centrifugal bin, a conical guide surface facing the second communication port is arranged on the adjusting piece, and a cylindrical guide surface is also arranged on the adjusting piece; the conical guide surface and the cylindrical guide surface are continuous two surfaces on the adjusting piece, and the conical guide surface is positioned between the cylindrical guide surface and the second communication port.
As a further scheme of the utility model: the first centrifugal bin and the second centrifugal bin are both vertically arranged, and the second centrifugal bin is positioned above the first centrifugal bin; the bottom of the first centrifugal bin is provided with a collecting box, the collecting box is provided with a collecting port corresponding to the bottom opening of the first centrifugal bin, and the collecting box is also provided with a water outlet and a filter screen; and spraying pieces are arranged in the first centrifugal bin and/or the second centrifugal bin.
As a further scheme of the utility model: the Venturi filtering water tank comprises a filtering bin, a dewatering bin and a water collecting bin, the filtering bin is communicated with the dewatering bin, and the water collecting bin is communicated with the filtering bin; the air inlet of the water tank is positioned on the filtering bin; a water film generating device is arranged in the filtering bin; the air outlet of the water tank is positioned on the dewatering bin; a reversing dehydration device is arranged in the dehydration bin; waste gas enters the filtering bin from the air inlet of the water tank and passes through a water film manufactured by the water film generating device to reach the dewatering bin; the waste gas reaching the dehydration bin is dehydrated by the reversing dehydration device and then is sucked out from the air outlet of the water tank; the water collecting bin is used for collecting water in the filtering bin; the water collecting bin is provided with a water circulating device which is used for supplying water in the water collecting bin to the water film generating device.
As a further scheme of the utility model: the water film generating device comprises a water inlet pipe, a water homogenizing groove and a water guide plate, wherein the water inlet pipe, the water homogenizing groove and the water guide plate are all fixed in the filtering bin; the water inlet pipe is towards the water inlet in the water homogenizing tank; the water guide plate is obliquely arranged and is positioned below the overflow port of the water homogenizing groove; the reversing dehydration device comprises a baffle fixed in the dehydration bin; the water circulating device comprises a water pump fixed on the water collecting bin; the water inlet of the water pump is communicated with the water collecting bin, and the water outlet of the water pump is communicated with the water inlet pipe; a filtering device is fixed in the water collecting bin, and water in the water collecting bin reaches a water inlet of the water pump after being filtered by the filtering device.
As a further scheme of the utility model: and a third fan is arranged at a spraying exhaust port of the spraying cabinet, and the third fan accelerates the waste gas when the waste gas reaches the cyclone centrifugal purification tower from the spraying cabinet.
As a further scheme of the utility model: an air cooler is arranged, and a cold air outlet of the air cooler is communicated with a fresh air inlet of the spraying cabinet.
Compared with the prior art, the utility model has the following beneficial effects:
when the exhaust gas internal circulation filtering system is used for separating and filtering solid substances in exhaust gas generated by spraying, the separation and the filtering are mainly completed through wind speed and water, so that the situation that a channel is blocked by the solid substances in the exhaust gas is not easy to occur; during continuous and long-term operation, the waste gas internal circulation filtering system can continuously separate and filter solid matters in waste gas, and the waste gas internal circulation filtering system is not in a pause state due to the fact that the separated and filtered solid matters are cleaned, so that stable production is effectively guaranteed; according to the utility model, through the improvement of the purification mode of the waste gas, the treatment efficiency of the waste gas is effectively improved under the condition of ensuring a good purification effect on the waste gas, the suspension of the internal circulation filtering system of the waste gas is reduced, and the production efficiency is effectively improved;
secondly, before the waste gas is subjected to water film filtration in the Venturi filtration water tank, the waste gas is subjected to centrifugal motion firstly, so that solid matters in the waste gas are subjected to centrifugal separation firstly, therefore, the solid matters contained in the waste gas entering the Venturi filtration water tank are subjected to primary separation, and when the Venturi filtration water tank is used for carrying out water film filtration on the waste gas, the solid matters capable of being filtered by the water film are reduced, so that the contact time of the waste gas and the water film is effectively shortened, namely the waste gas can be accelerated, and the treatment efficiency of the waste gas is improved; the water body in the Venturi water filtering cabinet can be repeatedly used for manufacturing a water film to a certain extent, so that the Venturi water filtering cabinet is more environment-friendly;
and thirdly, one part of the waste gas entering the circulating air cabinet is conveyed to the spraying cabinet through the first gas supply port to be sprayed continuously, the amount of the coating is effectively reduced by recycling the waste gas generated by spraying, the generation amount of the waste gas is reduced from the source, the energy conservation and emission reduction are actively responded, and a beautiful new society is constructed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a perspective view showing the construction of a cyclone centrifugal cleaning tower according to the present invention;
FIG. 3 is a perspective view showing another structure of the cyclone centrifugal cleaning tower in the present invention;
FIG. 4 is a front view showing the structure of a cyclone centrifugal cleaning tower according to the present invention;
FIG. 5 is a plan view showing the structure of a cyclone centrifugal cleaning tower according to the present invention;
FIG. 6 is a schematic sectional view taken along the line A-A in FIG. 5;
FIG. 7 is a perspective view of the venturi filtration cabinet of the present invention;
FIG. 8 is a front view of the venturi filter tank of the present invention;
FIG. 9 is a schematic sectional view taken along the line B-B in FIG. 8;
FIG. 10 is a schematic cross-sectional view taken along the line C-C in FIG. 8;
the reference numerals and names in the figures are as follows:
a spraying cabinet-1, a cyclone centrifugal purifying tower-2, a Venturi filtering water cabinet-3, a circulating air cabinet-4, a first fan-5, a second fan-6, a third fan-7, an air cooler-8 and a next processing system-9,
fresh air inlet-101, spray return air inlet-102, spray exhaust outlet-103, cyclone air inlet-201, cyclone air outlet-202, water tank air inlet-301, water tank air outlet-302, air tank air inlet-401, first air inlet-402, second air inlet-403,
a first centrifugal bin-2001, a second centrifugal bin-2002, a first communicating port-2003, a second communicating port-2004, a rotational flow reversing pipe-2005, a regulating part-2006, a conical guide surface-2007, a cylindrical guide surface-2008, a collecting box-2009, a collecting port-2010, a spraying part-2011, a water outlet-2012, a filter screen-2013 and a cover plate-2014,
the device comprises a filtering bin-3001, a dewatering bin-3002, a water collecting bin-3003, a water film generating device-3004, a reversing dewatering device-3005, a water circulating device-3006, a water inlet pipe-3007, a water homogenizing tank-3008, a water guide plate-3009, a filtering device-3010, a baffle-3011 and a water pump-3012.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, an internal circulation filtering system for waste gas includes a spraying cabinet 1, a cyclone centrifugal purifying tower 2, a venturi filtering water cabinet 3 and a circulating air cabinet 4. The spraying cabinet 1 is provided with a fresh air inlet 101, a spraying air return port 102 and a spraying air outlet 103; the cyclone centrifugal purifying tower 2 is provided with a cyclone air inlet 201 and a cyclone air outlet 202; the venturi filtering water tank 3 is provided with a water tank air inlet 301 and a water tank air outlet 302; the circulation duct 4 has a duct inlet 401, a first air supply port 402 and a second air supply port 403. The spraying exhaust port 103 of the spraying cabinet 1 is connected with the cyclone air inlet 201 of the cyclone centrifugal purifying tower 2, the cyclone air outlet 202 of the cyclone centrifugal purifying tower 2 is connected with the water cabinet air inlet 301 of the venturi filtering water cabinet 3, the water cabinet air outlet 302 of the venturi filtering water cabinet 3 is communicated with the air cabinet air inlet 401 of the circulating air cabinet 4, and the first air supply port 402 of the circulating air cabinet 4 is connected with the spraying return air port 102 of the spraying cabinet 1.
The exhaust gas generated by spraying of the spraying cabinet 1 is sent to the cyclone centrifugal cleaning tower 2 through the spraying exhaust port 103, and the exhaust gas performs centrifugal motion in the cyclone centrifugal cleaning tower 2 for centrifugally attaching the solid matters in the exhaust gas to the cyclone centrifugal cleaning tower 2.
The waste gas reaches the venturi filtering water tank 3 through the cyclone gas outlet 202 after completing the centrifugal motion in the cyclone centrifugal purifying tower 2, and the waste gas is subjected to water film filtering in the venturi filtering water tank 3 for filtering solid matters in the waste gas.
Waste gas is filtered by the water film in venturi filter water tank 3 and is arrived circulating air tank 4 through air tank air inlet 401, and the waste gas that gets into circulating air tank 4: one part is sent to the painting cabinet 1 through the first air supply port 402 to be painted, and the other part is sent to the next processing system 9 through the second air supply port 403 to be processed.
The solid matters in the waste gas generated by the spraying of the spraying cabinet 1 are subjected to centrifugal separation and water film filtration, so that the solid matters contained in the waste gas reaching the circulating air cabinet 4 are greatly reduced, and the improved benefits include:
1) after the waste gas is supplied to the next treatment system 9 through the second gas supply port 403 and finally discharged, solid matters are reduced, and the pollution to the environment is greatly reduced;
2) the reduction of solids results in a higher concentration of other species in the exhaust gas, which is more beneficial for reducing the power consumption of the primary treatment system 9 (e.g., combustion, where the exhaust gas is concentrated enough to be used as fuel).
Waste gas generated by spraying of the spraying cabinet 1 sequentially passes through the cyclone centrifugal purification tower 2 and the venturi filtering water cabinet 3. The waste gas is firstly processed by centrifugal movement before being processed by water film filtration in the Venturi filtering water tank 3, so that solid matters in the waste gas are firstly processed by centrifugal separation. Therefore, the waste gas entering the venturi filtering water tank 3 has the solid matter contained therein already subjected to the primary separation, and when the venturi filtering water tank 3 performs the water membrane filtering on the waste gas, the solid matter capable of being filtered by the water membrane is reduced, and the improved benefits include:
1) the contact time of the waste gas and the water film can be effectively shortened, namely the waste gas can be accelerated, and the treatment efficiency of the waste gas can be improved;
2) the water in the venturi water filtering cabinet can be repeatedly used for manufacturing a water film to a certain extent, and the venturi water filtering cabinet is more environment-friendly.
And a part of the waste gas entering the circulating air cabinet 4 is sent to the spraying cabinet 1 through the first gas supply port 402 for continuous spraying, the consumption of the coating is effectively reduced through the cyclic utilization of the waste gas generated by spraying, the generation amount of the waste gas is reduced from the source, the energy conservation and emission reduction are actively responded, and a beautiful new society is constructed.
When the device is used for separating and filtering solid substances in the waste gas generated by spraying, the solid substances are mainly separated and filtered by wind speed and water, so that the situation that the channel is blocked by the solid substances in the waste gas is not easy to occur. Therefore, when continuous, long-term operation, this waste gas inner loop filtration system can satisfy and continuously separate, filter the solid matter in the waste gas, and can not be because of the solid matter to separation, filtration and filter out cleans and lead to this waste gas inner loop filtration system to be in the pause state, effectively guarantees going on of production steadily. According to the utility model, through the improvement of the waste gas purification mode, the waste gas treatment efficiency is effectively improved under the condition of ensuring a good waste gas purification effect, the suspension of the waste gas internal circulation filtering system is reduced, and the production efficiency is effectively improved.
Preferably, the exhaust gas entering the circulating air cabinet 4: 80% of the air is sent to the spraying cabinet 1 through the first air supply port 402 to be sprayed, and 20% of the air is sent to the next processing system 9 through the second air supply port 403 to be processed. 20% fresh air (the volume is the same with the waste gas volume of second air supply port exhaust) can continue to follow new trend air inlet 101 and get into in the spraying cabinet 1 and carry out the pressurization spraying, guarantee spraying pressure and spraying quality, and 80% waste gas carries out cyclic utilization, cyclic separation and loop filter, and the filter effect is better, more energy-conserving.
As one of air volume controls: a first fan 5 is arranged at a first air supply port 402 of the circulating air cabinet 4, and the air volume of the waste gas sent to the spraying cabinet 1 by the circulating air cabinet 4 through the first air supply port 402 is controlled by the first fan 5; the second air supply port 403 of the circulating air cabinet 4 is provided with a second fan 6, and the air volume of the waste gas sent to the next treatment system 9 by the circulating air cabinet 4 through the second air supply port 403 is controlled by the second fan 6. The person skilled in the art can achieve the above-mentioned function of controlling the air volume by changing the air delivery device such as an air compressor, an air pump, etc., or by changing the opening ratio of the first air supply port and the second air supply port, which falls into the protection scope of the present invention.
Preferably, the third fan 7 is arranged at the spraying exhaust port 103 of the spraying cabinet 1, and the exhaust gas is accelerated by the third fan 7 when reaching the cyclone centrifugal purification tower 2 from the spraying cabinet 1, so that the centrifugal separation effect on the solid matters in the exhaust gas is better.
In the cold spraying operation, this waste gas inner loop filtration system still disposes air-cooler 8, and the cold wind gas outlet of air-cooler 8 communicates with the new trend air inlet 101 of spraying cabinet 1. By recycling the waste gas, the cold air conveyed by the spraying cabinet 1 by the air cooler 8 is also reduced, the power consumption of the air cooler is also reduced, and energy is saved; the cold wind conveying capacity of the air cooler 8 is reduced, the air cooler can be selected for use relatively in a smaller model, the overall cost investment is lower, and the popularization is facilitated.
The air cooler 8 takes a cooling tower to cool air, and compared with other waste gas treatment systems without waste gas recycling, the air cooler comprises: the waste gas internal circulation system has the advantages that waste gas is recycled, and when the waste gas circulation volume is 80%, the energy consumption of the air cooler is reduced by more than 60%.
The next treatment system can be an activated carbon adsorption and desorption + RCO catalytic combustion treatment system or a zeolite rotating wheel + RTO catalytic combustion treatment system.
Referring specifically to fig. 2-6, in an embodiment of the present invention, the cyclonic centrifugal cleaning tower includes a first centrifugal chamber 2001 having a cylindrical inner cavity and a second centrifugal chamber 2002 having a cylindrical inner cavity. The cyclone air inlet 201 is located on the first centrifugal chamber 2001 and the cyclone air outlet 201 is located on the second centrifugal chamber 2002. The first centrifugal chamber 2001 is provided with a first communication port 2003, the second centrifugal chamber 2002 is provided with a second communication port 2004, and the first communication port 2003 is communicated with the second communication port 2004.
The exhaust gas enters the first centrifugal chamber 2001 from the cyclone air inlet 201 to perform centrifugal movement, so that solid matters in the exhaust gas are centrifugally attached to the inner wall of the first centrifugal chamber 2001 during the centrifugal movement; the exhaust gas reaches the second communication port 2004 from the first communication port 2003 and continues to perform centrifugal motion in the second centrifugal chamber 2002, so that solid matters in the exhaust gas are centrifugally attached to the inner wall of the second centrifugal chamber 2002 during the centrifugal motion; finally, the waste gas is discharged from the cyclone gas outlet 202, and the solid matters in the waste gas are separated more cleanly after the waste gas is subjected to secondary centrifugal motion.
The flow direction of the exhaust gas in the first centrifugal chamber 2001 and the second centrifugal chamber 2002 is shown by the arrow lines in fig. 6.
Preferably, the cyclone air inlet 201 is located on the side of the first centrifugal bin 2001. A rotational flow reversing pipe 2005 matched with the cyclone air inlet 201 is fixed in the first centrifugal bin 2001; the exhaust gas enters the first centrifugal bin 2001 from the cyclonic air inlet 201 and rotates around the outside of the cyclone tube 2005.
One end opening of the cyclone switching tube 2005 is a first communication port 2003, and the other end opening of the cyclone switching tube 2005 is communicated with a second communication port 2004.
The exhaust gas enters the first centrifugal chamber 2001 from the cyclone air inlet 201, rotates around the outside of the cyclone direction changing pipe 2005, finally enters the cyclone direction changing pipe 2005 from the first communication port 2003, passes through the cyclone direction changing pipe 2005, and reaches the second communication port 2004. When the exhaust gas rotates in the first centrifugal chamber 2001, the exhaust gas is guided by the cyclone switching pipe 2005, and the exhaust gas is less likely to generate a relative airflow during rotation, and is smoother during rotation.
The axial center line of the cyclone switching tube 2005 coincides with the axial center line of the first centrifugal bin 2001, so that the guiding effect is better.
The centrifugal movement of the exhaust gases in the first centrifugal bin 2001 comprises:
1) rotation around the outside of the cyclone tube 2005;
2) and the water enters the cyclone reversing pipe 2005 from the outer side of the cyclone reversing pipe 2005 for reversing.
In order to ensure that the exhaust gas can smoothly enter the cyclone switching tube 2005 from the outer side of the cyclone switching tube 2005, the exhaust gas entering the first centrifugal bin 2001 from the cyclone air inlet 201: when the rotation is performed around the outside of the cyclone switching tube 2005, the rotation is a spiral rotation and faces one end of the cyclone switching tube 2005 having the first communication port 2003. As shown in fig. 6, in this embodiment, the first centrifugal chamber 2001 is provided with a cover 2014, so that the exhaust gas can flow only downward and finally reaches the second communication port 2004 from the first communication port 2003. There are various technical means for achieving the above purpose, such as: the cyclone air inlet is disposed obliquely downward, etc., which are not exemplified herein.
One end of the second centrifugal chamber 2002 is opened as a second communication port 2004. The cyclonic air outlet 202 is located on a side of the second centrifugal bin 2002, and the cyclonic air outlet 202 is tangential to the side of the second centrifugal bin 2002. An adjusting piece 2006 is fixed in the second centrifugal chamber 2002, a conical guide surface 2007 facing the second communication port 2003 is formed in the adjusting piece 2006, and a cylindrical guide surface 2008 is further formed in the adjusting piece 2006; the tapered guide surface 2007 and the cylindrical guide surface 2008 are two continuous surfaces on the adjuster 2006, and the tapered guide surface 2007 is located between the cylindrical guide surface 2008 and the second communication port 2004.
After the exhaust gas enters the second centrifugal chamber 2002 from the second communication port 2004, the exhaust gas impinges on the tapered guide surface 2007 and flows uniformly to the rear of the tapered guide surface 2007, that is, the exhaust gas flows in a tapered shape under the action of the tapered guide surface. The second communication port 2004 shown in fig. 4 is located below the tapered guide surface 2007, and the flow toward the rear of the tapered guide surface 2007 is an upward flow in fig. 4.
On a plane perpendicular to the axial centre line of the second centrifugal bin 2001: the waste gas in the second centrifugal chamber 2002 near the cyclone air outlet 202 is rapidly discharged out of the second centrifugal chamber 2002 from the cyclone air outlet 202, and at this time, the waste gas still in the second centrifugal chamber 2002 flows to the cyclone air outlet 202 by negative pressure; the cyclone air outlet 202 is tangent to the side surface of the second centrifugal chamber 2002, so that the exhaust gas in the second centrifugal chamber 2002 rotates around the cylindrical guide surface 2008 as the rotation center when the negative pressure flows to the cyclone air outlet 202, and is discharged from the cyclone air outlet 202 to the second centrifugal chamber 2002 when the exhaust gas rotates to the cyclone air outlet 202.
The centrifugal movement of the exhaust gases in the second centrifugal bin 2002 comprises:
1) reversal of impact on the conical guide surface 2007;
2) rotation around the cylindrical guide surface 2008.
The cyclone centrifugal purification tower of the embodiment is adopted to carry out centrifugal separation on solid matters in the waste gas, and the separation effect is better.
The conical guide surface 2007 and the cylindrical guide surface 2008 are designed to enable the exhaust gas entering the second centrifugal chamber 2002 from the second communication port 2004 to be divided in a conical shape, to be uniformly divided, and to rotate around the cylindrical guide surface 2008 after being divided; that is, during the process from the time when the exhaust gas enters the second centrifugal compartment 2002 to the time when the exhaust gas is discharged from the second centrifugal compartment 2002, the relative airflow is not easy to generate, so that the centrifugal purification effect of the second centrifugal compartment 2002 is better improved.
To facilitate cleaning of the first and second centrifugation silos 2001, 2002 and collection of the centrifuged solid matter: the first centrifugal bin 2001 and the second centrifugal bin 2002 are both vertically arranged, and the second centrifugal bin 2002 is positioned above the first centrifugal bin 2001; a collecting box 2009 is installed at the bottom of the first centrifugal bin 2001, a collecting opening 2010 corresponding to the bottom opening of the first centrifugal bin 2001 is formed in the collecting box 2009, and a water outlet 2012 and a filter screen 2013 are further formed in the collecting box 2009; spray 2011 is installed in the first centrifugal chamber 2001 and/or the second centrifugal chamber 2002.
The spray 2011 is externally connected with a high pressure water source to spray the inner walls of the first centrifugal bin 2001 and the second centrifugal bin 2002 at high pressure, so that solid matters attached to the inner walls of the first centrifugal bin 2001 and the second centrifugal bin 2002 are flushed to the collection box 2009, filtered by the filter screen 2013 and then subjected to solid-liquid separation, and finally, liquid is collected from the water outlet 2012 and the solid matters are collected from the collection box 2009. The solid and liquid substances on the second centrifugal bin 2002 firstly pass through the rotational flow guide pipe 2005 and then reach the collection box 2009.
After spraying, the moisture on the inner walls of the first centrifugal chamber 2001 and the second centrifugal chamber 2002 is more favorable for the attachment of solid matters.
To save installation space, one collection box 2009 may correspond to a plurality of first centrifugal bins 2001.
Referring to fig. 7-10, in an embodiment of the present invention, the venturi filtering water tank includes a filtering bin 3001, a dewatering bin 3002, and a water collecting bin 3003, where the filtering bin 3001 is communicated with the dewatering bin 3002, and the water collecting bin 3003 is communicated with the filtering bin 3001. The water tank air inlet 301 is positioned on the filtering bin 3001, and a water film generating device 3004 is arranged in the filtering bin 3001. The water tank air outlet 302 is positioned on the dewatering bin 3002, and a reversing dewatering device 3005 is arranged in the dewatering bin 3002. Waste gas enters the filter bin 3001 from the water tank air inlet 301, passes through a water film manufactured by the water film generating device 3004 and then reaches the dehydration bin 3002; the exhaust gas reaching the dehydration bin 3002 is dehydrated by the reversing dehydration device 3005 and then is sucked out from the water tank air outlet 302. The water collecting bin 3003 is used for collecting water in the filtering bin 3001, the water collecting bin 3003 is provided with a water circulating device 3006, and the water circulating device 3006 is used for supplying water in the water collecting bin 3003 to the water film generating device 3004. The water circulation device 3006 enables water in the filter bin 3001 and the water collecting bin 3003 to be recycled, so that the water circulation device is more environment-friendly.
After the exhaust gas passes through the water film made by the water film generating device 3004, solid matters in the exhaust gas are filtered by the water film, so that the exhaust gas sucked out from the water tank air outlet 302 is cleaner and the solid matters in the exhaust gas are less; waste gas passes behind the water film and dewaters in dehydration bin 3002, and the water content of waste gas is more enough to be controlled, more does benefit to follow-up cyclic utilization, emission or burning.
The flow direction of the exhaust gas in the filter bin 3001 and the dewatering bin 3002 is shown by the arrow lines in fig. 10.
If the water in the dewatering bin 3002 needs to be collected, the water tank air outlet 302 can be arranged above the reversing dewatering device 3005, the communication part of the dewatering bin 3002 and the filtering bin 3001 is positioned below the reversing dewatering device 3005, and the communication part of the filtering bin 3001 and the water collecting bin 3003 is positioned below the communication part of the dewatering bin 3002 and the filtering bin 3001. The water in the dewatering bin 3002 flows to the water collecting bin 3003 by the influence of gravity.
Preferably, the water film generating device 3004 comprises a water inlet pipe 3007, a water homogenizing tank 3008 and a water guide plate 3009, wherein the water inlet pipe 3007, the water homogenizing tank 3008 and the water guide plate 3009 are all fixed in the filtering bin 3001; the water inlet pipe 3007 is towards the water homogenizing tank 3008 for water inlet; the water guide plate 3009 is disposed obliquely, and the water guide plate 3009 is located below the overflow port of the water uniformizing groove 3008. The water in the water homogenizing groove 3008 uniformly falls on the water guide plate 3009 from the overflow port of the water homogenizing groove 3008, the water slants and slides off from the water guide plate 3009 to form a water film, the thickness of the water film is uniform, and the filtering effect is effectively guaranteed.
The reversing dewatering device 3005 comprises a baffle 3011 fixed in the dewatering bin 3002. Partial moisture is attached to the exhaust gas after the exhaust gas passes through the water film, and the baffle 3011 is used for changing the flowing direction of the exhaust gas, so that when the exhaust gas is reversed, partial moisture in the exhaust gas is attached to the baffle 3011, and the moisture content of the exhaust gas is reduced.
The water circulation device 3006 comprises a water pump 3012 fixed on the water collection bin 3003; the water inlet of the water pump 3012 is communicated with the water collecting bin 3003, and the water outlet of the water pump 3012 is communicated with the water inlet pipe 3007. The water in the water collecting bin 3003 is supplied to the water inlet pipe 3007 through the water pump 3012, so that the water in the filter bin 3001 and the water collecting bin 3003 can be recycled, the structure is simple, and the operation is convenient.
A filtering device 3010 is fixed in the water collecting bin 3003, and water in the water collecting bin 3003 reaches a water inlet of the water pump 3012 after being filtered by the filtering device 3010. The filtering device 3010 can effectively ensure the cleanliness of the water supplied to the water inlet 3007 by filtering solid substances in the water.
It should be noted that the centrifugal motion mentioned throughout refers to: since the mass of the solid matter in the exhaust gas is relatively greater than the mass of the other matter in the exhaust gas, the solid matter in the exhaust gas gradually deviates from the orbit during the rotation and/or the reversal of the exhaust gas. I.e. the movement of solid matter in the exhaust gases away from a specific path when the exhaust gases are moving along the path. For ease of description, such motion will be referred to collectively throughout as centrifugal motion of the exhaust.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. An internal exhaust gas circulation filter system, comprising: comprises a spraying cabinet, a cyclone centrifugal purification tower, a Venturi water filtering cabinet and a circulating air cabinet;
the spraying cabinet is provided with a fresh air inlet, a spraying return air port and a spraying exhaust port;
the cyclone centrifugal purifying tower is provided with a cyclone air inlet and a cyclone air outlet;
the Venturi filtering water tank is provided with a water tank air inlet and a water tank air outlet;
the circulating air cabinet is provided with an air inlet of the air cabinet, a first air supply port and a second air supply port;
a spraying exhaust port of the spraying cabinet is connected with a cyclone air inlet of a cyclone centrifugal purification tower, a cyclone air outlet of the cyclone centrifugal purification tower is connected with a water cabinet air inlet of a Venturi filtering water cabinet, a water cabinet air outlet of the Venturi filtering water cabinet is communicated with an air cabinet air inlet of a circulating air cabinet, and a first air supply port of the circulating air cabinet is connected with a spraying return air port of the spraying cabinet;
waste gas generated by spraying of the spraying cabinet is sent to the cyclone centrifugal purification tower through the spraying exhaust port, and the waste gas carries out centrifugal motion in the cyclone centrifugal purification tower and is used for centrifugally attaching solid matters in the waste gas to the cyclone centrifugal purification tower;
the waste gas entering the circulating air cabinet: one part is sent to the spraying cabinet through the first air supply port to be sprayed continuously, and the other part is sent to the next processing system through the second air supply port to be processed.
2. An exhaust gas internal circulation filter system according to claim 1, wherein: waste gas entering the circulating air cabinet: 80% of the gas is sent to the spraying cabinet through the first gas supply port to be sprayed continuously, and 20% of the gas is sent to the next processing system through the second gas supply port to be processed.
3. An exhaust gas internal circulation filter system according to claim 2, wherein:
a first fan is arranged at a first air supply port of the circulating air cabinet, and the air quantity of the waste gas sent to the spraying cabinet by the circulating air cabinet through the first air supply port is controlled by the first fan;
and a second fan is arranged at a second air supply port of the circulating air cabinet, and the quantity of the waste gas delivered to the next treatment system by the circulating air cabinet through the second air supply port is controlled by the second fan.
4. An internal circulation filter system for exhaust gas according to any one of claims 1 to 3, wherein: the cyclone centrifugal purification tower comprises a first centrifugal bin with a cylindrical inner cavity and a second centrifugal bin with a cylindrical inner cavity;
the cyclone air inlet is positioned on the first centrifugal bin;
the cyclone air outlet is positioned on the second centrifugal bin;
a first communication port is formed in the first centrifugal bin;
a second communicating port is arranged on the second centrifugal bin;
the first communication port is communicated with the second communication port.
5. The internal circulation filter system for exhaust gas according to claim 4, wherein:
the cyclone air inlet is positioned on the side surface of the first centrifugal bin;
a rotational flow reversing pipe matched with the cyclone air inlet is fixed in the first centrifugal bin; waste gas enters the first centrifugal bin from the cyclone air inlet and rotates around the outer side of the cyclone reversing pipe;
an opening at one end of the rotational flow reversing pipe is a first communicating opening, and an opening at the other end of the rotational flow reversing pipe is communicated with a second communicating opening;
one end of the second centrifugal bin is provided with a second communicating port;
the cyclone air outlet is positioned on the side surface of the second centrifugal bin and is tangent to the side surface of the second centrifugal bin;
an adjusting piece is fixed in the second centrifugal bin, a conical guide surface facing the second communication port is arranged on the adjusting piece, and a cylindrical guide surface is also arranged on the adjusting piece; the conical guide surface and the cylindrical guide surface are continuous two surfaces on the adjusting piece, and the conical guide surface is positioned between the cylindrical guide surface and the second communication port.
6. An exhaust gas internal circulation filter system according to claim 5, wherein: the first centrifugal bin and the second centrifugal bin are both vertically arranged, and the second centrifugal bin is positioned above the first centrifugal bin;
the bottom of the first centrifugal bin is provided with a collecting box, the collecting box is provided with a collecting port corresponding to the bottom opening of the first centrifugal bin, and the collecting box is also provided with a water outlet and a filter screen;
and spraying pieces are arranged in the first centrifugal bin and/or the second centrifugal bin.
7. An exhaust gas internal circulation filter system according to claim 1 or 2 or 3 or 5 or 6, wherein: the Venturi filtering water tank comprises a filtering bin, a dewatering bin and a water collecting bin, the filtering bin is communicated with the dewatering bin, and the water collecting bin is communicated with the filtering bin;
the air inlet of the water tank is positioned on the filtering bin;
a water film generating device is arranged in the filtering bin;
the air outlet of the water tank is positioned on the dewatering bin;
a reversing dehydration device is arranged in the dehydration bin;
waste gas enters the filtering bin from the air inlet of the water tank, passes through a water film manufactured by the water film generating device and then reaches the dewatering bin; the waste gas reaching the dehydration bin is dehydrated by the reversing dehydration device and then is sucked out from the air outlet of the water tank;
the water collecting bin is used for collecting water in the filtering bin;
the water collecting bin is provided with a water circulating device which is used for supplying water in the water collecting bin to the water film generating device.
8. An internal exhaust gas circulation filter system according to claim 7, wherein:
the water film generating device comprises a water inlet pipe, a water homogenizing groove and a water guide plate, wherein the water inlet pipe, the water homogenizing groove and the water guide plate are all fixed in the filtering bin; the water inlet pipe is towards the water inlet in the water homogenizing tank; the water guide plate is obliquely arranged and is positioned below the overflow port of the water homogenizing tank;
the reversing dehydration device comprises a baffle fixed in the dehydration bin;
the water circulating device comprises a water pump fixed on the water collecting bin; the water inlet of the water pump is communicated with the water collecting bin, and the water outlet of the water pump is communicated with the water inlet pipe;
a filtering device is fixed in the water collecting bin, and water in the water collecting bin reaches a water inlet of the water pump after being filtered by the filtering device.
9. An exhaust gas internal circulation filter system according to claim 1 or 2 or 3 or 5 or 6 or 8, wherein: and a third fan is arranged at a spraying exhaust port of the spraying cabinet, and the third fan accelerates the waste gas when the waste gas reaches the cyclone centrifugal purification tower from the spraying cabinet.
10. An exhaust gas internal circulation filter system according to claim 1 or 2 or 3 or 5 or 6 or 8, wherein: an air cooler is arranged, and a cold air outlet of the air cooler is communicated with a fresh air inlet of the spraying cabinet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122402196.5U CN216537605U (en) | 2021-10-07 | 2021-10-07 | Waste gas internal circulation filtration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122402196.5U CN216537605U (en) | 2021-10-07 | 2021-10-07 | Waste gas internal circulation filtration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118022445A (en) * | 2024-04-15 | 2024-05-14 | 南通康净环保科技有限公司 | Air purifying device capable of automatically cleaning filter screen and use method |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118022445A (en) * | 2024-04-15 | 2024-05-14 | 南通康净环保科技有限公司 | Air purifying device capable of automatically cleaning filter screen and use method |
| CN118022445B (en) * | 2024-04-15 | 2024-06-11 | 南通康净环保科技有限公司 | Air purifying device capable of automatically cleaning filter screen and use method |
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