CN108970401B - Device for purifying waste gas in environment-friendly detection process of motor vehicle tail gas - Google Patents
Device for purifying waste gas in environment-friendly detection process of motor vehicle tail gas Download PDFInfo
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- CN108970401B CN108970401B CN201811056012.0A CN201811056012A CN108970401B CN 108970401 B CN108970401 B CN 108970401B CN 201811056012 A CN201811056012 A CN 201811056012A CN 108970401 B CN108970401 B CN 108970401B
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- 239000007789 gas Substances 0.000 title claims abstract description 85
- 238000001514 detection method Methods 0.000 title claims abstract description 52
- 239000002912 waste gas Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000008569 process Effects 0.000 title claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 80
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000005507 spraying Methods 0.000 claims abstract description 32
- 239000007921 spray Substances 0.000 claims abstract description 27
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 claims abstract description 23
- 230000000712 assembly Effects 0.000 claims abstract description 6
- 238000000429 assembly Methods 0.000 claims abstract description 6
- 230000000630 rising effect Effects 0.000 claims abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 238000007781 pre-processing Methods 0.000 claims abstract description 3
- 238000005452 bending Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010865 sewage Substances 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000004062 sedimentation Methods 0.000 claims description 11
- 238000009298 carbon filtering Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims description 6
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- 238000002485 combustion reaction Methods 0.000 description 4
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- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a device for purifying waste gas in the environment-friendly detection process of motor vehicle tail gas, which comprises: the tank body is provided with at least one group of spraying assemblies for preprocessing larger particles in the waste gas at a preset height position in the rising direction of the waste gas; an active carbon filter assembly for carrying out secondary treatment on smaller particles in the waste gas is arranged at the upstream of the spraying mechanism; the tank body realizes the communication of spray assembly and water tank through the hydrologic cycle subassembly on it, the tank body is linked together with matched with tail gas detection flowmeter through at least a set of admission line and then that set up on it. The invention provides a device for purifying exhaust gas in the environment-friendly detection process of motor vehicle exhaust gas, which can collect and process the generated exhaust gas in the exhaust gas detection process so as to adapt to the collection of the exhaust gas under different detection working conditions, so that the discharged gas meets the requirements, the environment of a detection line is ensured, and the physical state of detection personnel is ensured.
Description
Technical Field
The invention relates to a purification device used under the condition of equipment criticizing detection. More particularly, the invention relates to a device for purifying exhaust gas in the environment-friendly detection of motor vehicle exhaust gas or in the maintenance of automobiles.
Background
Automotive emissions are harmful gases such as CO (carbon monoxide), hc+nox (hydrocarbons and nitrogen oxides), PM (particulate matter, soot) and the like, which are discharged from exhaust gas. They are all harmful gases produced by the engine during the combustion work. The reasons for the generation of these harmful gases are different, and CO is an intermediate product of incomplete oxidation of fuel, and when oxygen is insufficient, CO is generated, and the CO in the exhaust gas increases due to the high concentration of the mixture and the non-uniformity of the mixture. HC is unburned fuel, and is discharged when part of fuel is not burned due to non-uniformity of mixture, cold wall of combustion chamber, etc. NOx is a substance produced by fuel (gasoline) during combustion. PM is also a substance produced by hypoxia during combustion of fuel, most notably in diesel engines.
The final authority is the environment protection department responsible for automobile exhaust detection whether the automobile exhaust meets the standards, the environment protection department responsible for automobile exhaust detection detects the automobile exhaust by adopting a simple working condition method or a loading deceleration method, the motor vehicle with unqualified exhaust pollution detection is rechecked after maintenance and repair of related enterprises, only the motor vehicle with rechecked meeting the requirements can flow into the market for normal operation, the environment protection department usually requires motor vehicle drivers to detect the automobile exhaust under different operation conditions according to the requirements of detection teachers, whether the automobile exhaust meets the standards is evaluated, in the process, in order to achieve different detection effects, a large amount of exhaust gas is generated due to different operation states of the engine, and the automobile detected by one production line per day is counted, so that the exhaust gas generated at fixed points is more, not only the environment of a detection station is influenced, but also the physical health of detection staff is influenced, reasonable exhaust gas treatment is carried out on the motor vehicle, and the environment of the detection station is controlled.
In addition, for the automobile repair station, after each maintenance task is completed, the automobile is subjected to functional self-inspection to judge the maintenance effect, and when the customer lifts, the running state of the automobile under various working conditions is displayed for the customer so as to meet the maintenance requirements of the customer, so that in the maintenance process, the self-inspection and the trial inspection can generate a lot of waste gas, and the automobile is required to be controlled so as to meet the increasingly strict environmental protection requirements.
Disclosure of Invention
It is an object of the present invention to address at least the above problems and/or disadvantages and to provide at least the advantages described below.
The invention also aims to provide a device for purifying the exhaust gas in the environment-friendly detection process of the tail gas of the motor vehicle, which can collect and process the generated tail gas in the detection process of the tail gas of the motor vehicle and in the self-inspection and test-inspection processes of the automobile maintenance so as to adapt to the tail gas collection under different detection working conditions, so that the discharged gas meets the requirements, the environment of a detection line is ensured, and the physical state of detection personnel is ensured.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided an apparatus for purifying exhaust gas in an environment-friendly detection process of motor vehicle exhaust gas, comprising:
the tank body is provided with at least one group of spraying assemblies for preprocessing larger particles in the waste gas at a preset height position in the rising direction of the waste gas;
An active carbon filter assembly for carrying out secondary treatment on smaller particles in the waste gas is arranged at the upstream of the spraying mechanism;
The tank body realizes the communication of spray assembly and water tank through the hydrologic cycle subassembly on it, the tank body is linked together with matched with tail gas detection flowmeter through at least a set of admission line and then that set up on it.
Preferably, the spraying components are configured into two groups which are distributed up and down;
Wherein, each spraying assembly is respectively configured to have a preset angle with the horizontal line, and the spraying angle is corresponding to or complemented with a spray head or a ring-shaped spray pipe arranged in the tank body. Preferably, wherein the activated carbon filter assembly comprises:
The mounting mechanism is arranged in the tank body and has a preset interval with the spraying assembly;
A plurality of activated carbon filter mechanisms detachably disposed on the mounting mechanism;
Wherein, the jar body is provided with the change window with active carbon filter mechanism's mounted position matched with in the position with mounting mechanism matched with.
Preferably, the mounting mechanism includes:
At least two layers of mounting plates horizontally arranged in the tank body, wherein a plurality of inserting ports with preset inclination angles are arranged on the circumference of each layer of mounting plates, so that the adjacent layers of activated carbon mechanisms are arranged in a spiral manner in space;
The activated carbon mechanism includes: an active carbon plate matched with each plug interface;
The active carbon plate comprises a steel mesh used for accommodating and limiting active carbon and a fixed end arranged at one end of the steel mesh and matched with the plug-in port, wherein a flexible bending part used for fixing is arranged at the fixed end, and a clamping groove matched with the flexible bending part is arranged on the plug-in port.
Preferably, wherein the water circulation assembly comprises:
A water inlet pipeline communicated with the spray assembly;
The sewage sedimentation area is arranged below the spraying assembly;
wherein the water tank is arranged at the bottom or one side of the tank body and is communicated with the sewage sedimentation zone;
the water inlet pipeline is provided with a single-phase vortex self-priming electric pump;
and a drain valve is arranged at the lower end of the sewage sedimentation zone.
Preferably, the air inlet pipeline is provided with a centrifugal ventilator at a position connected with each tail gas detection flowmeter;
wherein the air intake conduit is configured as a malleable bellows;
and an air inlet sampling port is arranged on one side of the air inlet pipe, which is close to the tank body or the tail gas detection flowmeter.
Preferably, the top of the tank body is sealed by a gland with a contraction part at a position matched with the active carbon filtering component;
the upper end of the gland is provided with a gas outlet, and the gas outlet is provided with an exhaust sampling port;
The tank body is pivoted with observation windows matched with all installation phases of the spray assembly.
Preferably, the air inlet pipeline is provided with a sound absorbing mechanism at a position matched with the centrifugal ventilator;
the sound absorbing mechanism is configured to be provided with a bending clamping part matched with the end part of the air inlet pipeline and a sound absorbing end extending into the air inlet pipeline;
the sound-absorbing end comprises a flexible pipe matched with the side wall of the air inlet pipeline and a sound-absorbing layer arranged on the flexible pipe.
Preferably, the sound absorbing layer is configured as a plurality of groups of sound absorbing nets arranged on the side wall of the flexible pipe;
Each set of the sound-absorbing net is configured to be obtained by using a steel wire net having a predetermined softness, and the steel wire net is provided with soundproof cotton cloth.
Preferably, the sound absorbing layer is configured to have a net structure in a shape of a loofah sponge.
The invention at least comprises the following beneficial effects: firstly, the invention can collect and store the generated tail gas in the tail gas detection process into the tank body through the air inlet pipeline, the spraying component arranged in the tank body is used for spraying the larger particles in the collected waste gas so as to obviously increase the mass of the large particles, water generated by spraying automatically flows downwards into the tank body, and the activated carbon filtering component is used for collecting the smaller particles in the ascending waste gas so as to ensure that the discharged gas meets the requirements, thereby being suitable for tail gas collection under different detection working conditions, further ensuring the environments of detection lines and maintenance stations and simultaneously ensuring the physical state of detection personnel.
Secondly, the structure of the water circulation assembly is arranged, so that larger particles washed down by spraying can be collected, cleaned in fixed time and the filtered water can be recycled, and the energy-saving and environment-friendly effects are achieved.
And thirdly, the sound absorbing mechanism is arranged on the air inlet pipeline, so that noise generated by the ventilation fan in the tail gas collecting process can be absorbed, and large particles in the waste gas are partially treated, so that the waste gas treatment capacity in the later-stage tank body is stronger, and a better treatment effect is achieved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of an apparatus for purifying exhaust gas in an environment-friendly detection process of motor vehicle exhaust gas according to an embodiment of the present invention;
FIG. 2 is a schematic view of an activated carbon filter assembly according to another embodiment of the present invention;
Fig. 3 is a schematic structural view of a sound absorbing mechanism according to another embodiment of the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Fig. 1 shows an implementation form of an apparatus for purifying exhaust gas in an environment-friendly detection process of motor vehicle exhaust gas according to the present invention, comprising:
The device comprises a tank body 1, a spray device and a control device, wherein the tank body is used for collecting and storing waste gas generated in the tail gas detection process, at least one group of spray assemblies 2 for pre-treating larger particles in the waste gas are arranged at a preset height position in the rising direction of the waste gas, and the spray assemblies are used for flushing the larger particles in the waste gas by spraying water with high fine density so as to increase the dead weight of the larger particles and move downwards along the flowing direction of spray water, so that the separation operation of the gas in the waste gas and the larger particles is realized;
an activated carbon filter assembly 3 for carrying out secondary treatment on smaller particles in the waste gas is arranged at the upstream of the spraying mechanism and is used for treating the smaller particles in the waste gas after spraying treatment, the separation operation of the smaller particles and the waste gas is realized in the gas rising process through the stronger adsorption effect of the activated carbon, meanwhile, as the activated carbon material is amorphous carbon obtained through processing treatment, the activated carbon material has a large specific surface area and has good adsorption capacity on inorganic or organic substances, colloid particles and the like in gas, solution and the like, and the activated carbon filter assembly is used as an adsorbent with excellent performance, can effectively remove chromaticity and odor, can remove most of organic pollutants and certain inorganic substances in secondary effluent, contains certain toxic heavy metals, and removes impurities and harmful gases in the gas, thereby realizing the recovery or treatment of the waste gas;
The tank body realizes the intercommunication of spray assembly and water tank 5 through the hydrologic cycle subassembly 4 on it, the tank body is linked together through at least a set of admission line 6 and then with matched with tail gas detection flowmeter 7 that set up on it, and it is used for through the cooperation of hydrologic cycle subassembly and water tank to realize the water supply operation to spray the subassembly, collect or store the waste gas that gets into the tail gas detection flowmeter through the admission line, handle it in order to retrieve or realize the emission in the air through the interior second grade exhaust treatment component of the tank body, in order to reach emission standard and requirement. The device adopting the scheme carries out filtering treatment on the waste gas generated by the tail gas detection center through the secondary waste gas treatment component so that the quality of the discharged gas meets the requirements, and the device has the advantages of good implementation effect, strong operability, good adaptability and environmental protection. And this is merely illustrative of a preferred embodiment and is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
As shown in fig. 1, in another example, the spray assemblies are configured into two groups which are distributed up and down, so as to adapt to the requirement of using one exhaust gas treatment device together on the horizontal station of an adjacent detection line, thereby reducing the cost, facilitating the structural layout of the field device, and having better separation effect on the limited exhaust gas ascending travel;
Wherein each spraying component is respectively configured to have a preset angle with the horizontal line, and the spraying angle is corresponding to or complemented with a spray head or annular spray pipe 8 arranged in the tank body. Compared with a horizontally arranged spraying assembly, the novel water tank has the advantages that firstly, the side wall of the tank body can be flushed in the spraying process, so that the cleanliness is ensured; secondly, it is through the setting of angle slope for shower nozzle spun horizontal plane is showing and is increasing, in order to have a large tracts of land in the jar body next to the skin, thirdly, through the relative setting and have the position that makes its spraying of predetermined contained angle corresponding, mutually complement, in order to spray each corner of jar body, in order to realize the omnidirectional separation damage. The spray assembly adopting the scheme has the advantages of complementary advantages, large acting surface, obvious separation effect, simple structure and easy realization. And this is merely illustrative of a preferred embodiment and is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
As shown in fig. 1-2, in another example, the activated carbon filter assembly includes:
the installation mechanism 9 is arranged in the tank body and has a preset interval with the spraying assembly, and is used for supporting and fixing the activated carbon filtering mechanism, and meanwhile, through the arrangement of the preset interval, part of water and gas are effectively isolated, so that the stability of the working environment is ensured, and the service life of the device is prolonged;
The plurality of active carbon filtering mechanisms 10 are detachably arranged on the installation mechanism, and the filtering of fine particles and waste gas is realized through the physical action of active carbon so as to ensure that the quality of discharged air meets the requirements, and meanwhile, the active carbon filtering mechanisms are detachably arranged so as to facilitate the real-time replacement of the active carbon in the rear of the active carbon filtering mechanisms and ensure the stability of the quality of the active carbon filtering mechanisms;
Wherein, the jar body is provided with the change window 11 with active carbon filter mechanism's mounted position matched with on the position with the mounting mechanism, and it is used for through the material setting of change window (such as the transparent material of ya keli) or open the window and carry out real-time observation to the operating condition of active carbon to when the result of use can not reach the requirement, change it in real time, in order to guarantee that it has best operating condition. The scheme has the advantages of good implementation effect, strong operability and good adaptability. And this is merely illustrative of a preferred embodiment and is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
As shown in fig. 2, in another example, the mounting mechanism includes:
The at least two layers of mounting plates 12 are horizontally arranged in the tank body, a plurality of inserting ports 13 with preset inclination angles are arranged in the circumferential direction of each layer of mounting plates, so that the adjacent layers of activated carbon mechanisms are arranged in a spiral manner in space, the activated carbon plates of each layer can be mutually corresponding in space after being arranged in a spiral manner through the angle arrangement of the inserting ports, the residence time of waste gas is long, and the adsorption capacity of the activated carbon plates can meet the emission requirement when the rising speed of the waste gas is high;
The activated carbon mechanism includes: the activated carbon plates 14 matched with the plug interfaces are configured to be obtained by taking crystal carbon with regular arrangement or columnar carbon prepared by taking high-quality wood dust, coconut shells and the like as raw materials through crushing, mixing, extruding, forming, drying, carbonizing and activating, so that the separation treatment effect is ensured, and the integration, the management and the replacement of the activated carbon plates are convenient;
The active carbon plate comprises a steel net 15 for accommodating and limiting active carbon, a fixed end 16 arranged at one end of the steel net and matched with the plug-in port, and a flexible bending part 17 arranged on the fixed end and used for fixing the carbon plate, wherein the steel net 15 is used for integrating the plate-shaped or columnar active carbon to form an integral plate, the fixed end 16 is used for being matched with the plug-in port to realize the fixation of the carbon plate, the flexible bending part 17 is used for clamping the carbon plate in a clamping groove 18 of the plug-in port through the bending part after the carbon plate is inserted, the clamping groove matched with the flexible bending part is arranged on the plug-in port, the plug-in port of an inclined structure is designed to enable the active carbon plate to be easy to withdraw, and the plug-in port can be arranged larger than the fixed end, so that the position of the bending part and the clamping groove are staggered through moving the position of the bending part when the bending part withdraws from the clamping groove when the active carbon plate is pushed down during withdrawal operation, and the active carbon plate is taken out. The scheme has the advantages of implementation effect, strong operability and good stability. And this is merely illustrative of a preferred embodiment and is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
As shown in fig. 1, in another example, the water circulation assembly includes:
A water inlet pipe 19 communicated with the spray assembly and used as a water transmission channel for realizing water transmission;
The sewage sedimentation zone 20 is arranged below the spraying component and is used for separating and treating water with large particles after flushing, the clear water above the sewage sedimentation zone can be conveyed to the water tank through a pipeline for secondary recycling, the water can be decontaminated by arranging the water treatment filtering component at the lower end, so that the large particles are sedimented in the sewage sedimentation zone, the treated clear water is communicated with the water tank through the drain pipe to realize circulation, and the water treatment filtering component can adopt a filter screen with a preset aperture or can use activated carbon or other sewage treatment mechanisms to realize sewage treatment;
the water tank is arranged at the bottom or one side of the tank body and is communicated with the sewage sedimentation area, and the communication mode can be that the water tank is communicated with the clear water which is sedimented above or can be communicated through a drain pipe below;
The water inlet pipeline is provided with a single-phase vortex self-priming electric pump 21 which is used for ensuring the water conveying capacity of the water inlet pipeline so as to ensure that the pressure of the water inlet pipeline meets the requirement of spraying;
The sewage sedimentation zone lower extreme is provided with blowoff valve 22, and it is used for handling after the dirty waste water after handling or after the sediment. The scheme has the advantages of good implementation effect, strong operability and good stability. And this is merely illustrative of a preferred embodiment and is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
As shown in fig. 1, in another example, the air inlet pipeline is provided with a centrifugal ventilator 23 at a position connected with each exhaust gas detection flowmeter, and the centrifugal ventilator is used for sucking the exhaust gas into the tank body through acting force so as to treat and collect the exhaust gas;
The air inlet pipeline is configured as an extensible corrugated pipe, and the position of the air inlet pipeline can be stretched according to the requirement, so that the collection requirements of vehicles at different parking positions or tail gas detection flow meters at different positions are ensured;
The intake pipe is provided with the sampling mouth 24 that admits air in being close to jar body or tail gas detection flowmeter's one side, and it is used for carrying out sampling detection to its waste gas under different operating modes, for detecting whether the emission after this device carries out exhaust treatment accords with the requirement, provides the data reference to the operating mode of device is obtained in order to obtain, is convenient for carry out periodic maintenance or change to it. The scheme has the advantages of good implementation effect, strong operability, good stability and controllable working condition. And this is merely illustrative of a preferred embodiment and is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
As shown in fig. 1, in another example, the top of the tank is further encapsulated by a gland 25 with a constriction at a position where it cooperates with the activated carbon filter assembly, which serves to concentrate the discharged gas;
The upper end of the gland is provided with a gas outlet 26, and the gas outlet is provided with an exhaust sampling port 27 for collecting the gas which is intensively discharged so as to ensure the detection precision of the gas, further judge whether the equipment meets the preset requirement in the waste gas treatment process and further judge whether the internal equipment needs to be maintained and replaced;
The tank body is pivoted with observation windows 28 matched with each installation phase of the spray assembly, the observation windows can acquire the working condition of the spray assembly and check whether the spray assembly is blocked or not so as to monitor the spray assembly in real time and facilitate daily maintenance; meanwhile, the sealing strips are arranged on the edges of the observation windows to ensure that the working environment meets the requirements, meanwhile, the stability of the product structure is ensured, the structure of the sealing strips can be set into a wedge shape (such as a thumbtack shape, a conical shape, a trapezoid shape and the like), meanwhile, the inner structure of the sealing strips is hollow, so that the sealing strips have excellent elasticity, by adopting the scheme, the sealing strips can be opened according to the requirements through the two observation holes arranged on the tank body, and the angle of the inner spraying device can be adjusted according to the requirements, so that the spraying stability in the d using process of the sealing strips is ensured to be always maintained, and the use condition of internal consumables can be observed through the observation holes. And this is merely illustrative of a preferred embodiment and is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
As shown in fig. 3, in another example, the air inlet pipeline is provided with a sound absorbing mechanism 29 at a position matched with the centrifugal ventilator, and the sound absorbing mechanism is used for partially absorbing noise generated by the centrifugal ventilator and noise generated in the exhaust gas transmission process so as to ensure that the environmental noise meets the requirement;
Wherein, the sound absorbing mechanism is configured to have a bending clamping part 30 matched with the end part of the air inlet pipe, which is used for clamping the sound absorbing mechanism at one end of the air inlet pipe, so that when the air inlet pipe is connected with the external equipment, the sound absorbing mechanism is also fixed at the same time, and a sound absorbing end 31 extending into the air inlet pipe is used for absorbing most of noise of the exhaust gas in the transmission process;
The sound absorbing end includes a flexible tube fitted to a side wall of the air intake duct to be fitted to the air intake duct to prevent the diameter thereof from being too small and to further generate noise by being displaced in the air intake duct, and a sound absorbing layer 32 provided on the flexible tube to absorb noise generated during the exhaust gas transmission. The scheme has the advantages of environmental protection, simple structure and good stability. And this is merely illustrative of a preferred embodiment and is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
As shown in fig. 3, in another example, the sound absorbing layer is configured as a plurality of groups of sound absorbing net 33 disposed on the side wall of the flexible pipe, which may be configured to be arranged in a spiral so as to increase the residence time of the exhaust gas inside thereof by the spiral arrangement, thereby ensuring sound absorbing effect;
Each set of the sound-absorbing net is configured to be obtained by adopting a steel wire net 34 with preset softness, and the steel wire net is provided with sound-insulating cotton cloth 35, so that the structural design of the sound-absorbing net can absorb noise and simultaneously remove large-particle impurities partially. The scheme has the advantages of good implementation effect, environmental protection and good product reliability. And this is merely illustrative of a preferred embodiment and is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
In another example, the sound absorbing layer is configured to have a loofah-like net structure, which is used for the loofah-like net structure, and the sound absorbing layer can form a sound absorbing cavity through the aperture inside the sound absorbing layer to realize a sound absorbing effect, and can also partially absorb a large particle structure to further ensure the effect of post-exhaust gas treatment. The scheme has the advantages of good implementation effect, strong stability and good adaptability. And this is merely illustrative of a preferred embodiment and is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. The application, modification and variation of the device for purifying exhaust gases in the environment-friendly detection of motor vehicle exhaust gases according to the present invention will be obvious to those skilled in the art.
Specific examples:
The device for purifying the exhaust gas is applied to the environment-friendly detection process of the tail gas of the motor vehicle, specifically, the device is matched with the automatic smoke/gas tester 447 of the Haina 3012 by adopting the LH-7 smoke sampler 007, and the particulate matters are measured by adopting a sampling method of the particulate matters and gaseous pollutants in the exhaust gas of a fixed pollution source;
the sulfur dioxide and the nitrogen oxide are measured by adopting a fixed potential electrolysis method by adopting the cooperation of the sea-na 3012 automatic smoke/gas testers 445 and 446;
monitoring result evaluation criteria:
the comprehensive emission standard of the atmospheric pollution GB16297-1996 is shown in the following table:
The final detection index is as follows:
Although embodiments of the invention have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (3)
1. The utility model provides a device that carries out purification treatment to waste gas in motor vehicle exhaust environmental protection detection process which characterized in that includes:
the tank body is provided with at least one group of spraying assemblies for preprocessing larger particles in the waste gas at a preset height position in the rising direction of the waste gas;
an active carbon filter assembly for carrying out secondary treatment on smaller particles in the waste gas is arranged at the upstream of the spray assembly;
The tank body is communicated with the water tank through a water circulation assembly on the tank body, and the tank body is further communicated with a matched tail gas detection flowmeter through at least one group of air inlet pipelines arranged on the tank body;
The air inlet pipeline is provided with a centrifugal ventilator at the position connected with each tail gas detection flowmeter;
wherein the air intake conduit is configured as a malleable bellows;
an air inlet sampling port is arranged on one side of the air inlet pipe, which is close to the tank body or the tail gas detection flowmeter;
The air inlet pipeline is provided with a sound absorption mechanism at a position matched with the centrifugal ventilator;
the sound absorbing mechanism is configured to be provided with a bending clamping part matched with the end part of the air inlet pipeline and a sound absorbing end extending into the air inlet pipeline;
the sound-absorbing end comprises a flexible pipe matched with the side wall of the air inlet pipeline and a sound-absorbing layer arranged on the flexible pipe;
the sound absorbing layer is configured into a plurality of groups of sound absorbing nets arranged on the side wall of the flexible pipe;
each set of the sound absorbing nets is configured to be obtained by adopting a steel wire net with preset softness, and the steel wire net is provided with sound insulation cotton cloth;
the sound absorbing layer is configured to have a net structure in a loofah shape;
the activated carbon filter assembly includes:
The mounting mechanism is arranged in the tank body and has a preset interval with the spraying assembly;
A plurality of activated carbon filter mechanisms detachably disposed on the mounting mechanism;
wherein, the tank body is provided with a replacement window matched with the installation position of the activated carbon filtering mechanism at the position matched with the installation mechanism;
the mounting mechanism includes:
At least two layers of mounting plates horizontally arranged in the tank body, wherein a plurality of inserting ports with preset inclination angles are arranged on the circumference of each layer of mounting plates, so that the adjacent layers of activated carbon mechanisms are arranged in a spiral manner in space;
The activated carbon mechanism includes: an active carbon plate matched with each plug interface;
The active carbon plate comprises a steel mesh for accommodating and limiting active carbon and a fixed end arranged at one end of the steel mesh and matched with an inserting port, wherein a flexible bending part for fixing is arranged on the fixed end, and a clamping groove matched with the flexible bending part is arranged on the inserting port;
The spraying components are configured into two groups which are distributed up and down;
Wherein, each spraying assembly is respectively configured to have a preset angle with the horizontal line, and the spraying angle is corresponding to or complemented with a spray head or a ring-shaped spray pipe arranged in the tank body.
2. The apparatus for purifying exhaust gas in an environment-friendly detection process for motor vehicle exhaust as claimed in claim 1, wherein said water circulation assembly comprises:
A water inlet pipeline communicated with the spray assembly;
The sewage sedimentation area is arranged below the spraying assembly;
The water tank is arranged at the bottom or one side of the tank body and is communicated with the sewage sedimentation area;
the water inlet pipeline is provided with a single-phase vortex self-priming electric pump;
and a drain valve is arranged at the lower end of the sewage sedimentation zone.
3. The apparatus for purifying exhaust gas in an environment-friendly detection process of motor vehicle exhaust gas according to claim 1, wherein the top of the tank body is sealed by a gland having a constriction at a position matching with the activated carbon filter assembly;
the upper end of the gland is provided with a gas outlet, and the gas outlet is provided with an exhaust sampling port;
The tank body is pivoted with observation windows matched with all installation phases of the spray assembly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811056012.0A CN108970401B (en) | 2018-09-11 | 2018-09-11 | Device for purifying waste gas in environment-friendly detection process of motor vehicle tail gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811056012.0A CN108970401B (en) | 2018-09-11 | 2018-09-11 | Device for purifying waste gas in environment-friendly detection process of motor vehicle tail gas |
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| CN108970401B true CN108970401B (en) | 2024-05-03 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110231439A (en) * | 2019-06-13 | 2019-09-13 | 张化绪 | A kind of motor-vehicle tail-gas detection line purification device and its working method |
| CN111927639A (en) * | 2020-09-27 | 2020-11-13 | 潍柴动力股份有限公司 | Engine tail gas detection method, device and system |
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|---|---|
| CN108970401A (en) | 2018-12-11 |
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