CN216767521U - Tail gas treatment device and operation machinery - Google Patents
Tail gas treatment device and operation machinery Download PDFInfo
- Publication number
- CN216767521U CN216767521U CN202220218081.2U CN202220218081U CN216767521U CN 216767521 U CN216767521 U CN 216767521U CN 202220218081 U CN202220218081 U CN 202220218081U CN 216767521 U CN216767521 U CN 216767521U
- Authority
- CN
- China
- Prior art keywords
- treatment device
- gas treatment
- filter screen
- collection box
- exhaust gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model relates to the technical field of tail gas treatment, and provides a tail gas treatment device and an operation machine. The tail gas treatment device comprises an oxidation catalyst, a collection box, a particle trap and a reduction catalyst, wherein a first reversing valve and a second reversing valve are matched with each other to enable the tail gas treatment device to be in a first operation mode or a second operation mode, airflow sequentially flows through the oxidation catalyst, the particle trap and the reduction catalyst in the first operation mode, airflow sequentially flows through the oxidation catalyst, the particle trap, the collection box and the reduction catalyst in the second operation mode, and the airflow flow directions in the particle trap are opposite in the first operation mode and the second operation mode. According to the tail gas treatment device and the operation machine, the operation mode is switched through the first reversing valve and the second reversing valve, reverse purging of the particle trap is achieved, and the structure is simple.
Description
Technical Field
The utility model relates to the technical field of tail gas treatment, in particular to a tail gas treatment device and an operation machine.
Background
The main component of exhaust pollution is particulate matter, and the main treatment mode at present is to add a particulate trap. The filtering efficiency of a particulate filter (DPF) exceeds 90%, but as the amount of particulate matter collected in the DPF increases, the exhaust back pressure gradually increases, and the dynamic performance and economical efficiency of a diesel engine are affected to a certain extent, so that the particulate matter in the DPF needs to be removed at a proper time, that is, the DPF is regenerated.
In the common method of DPF regeneration, the DPF is parked for regeneration or enters a service station, the DPF is detached, and manual cleaning work is performed to realize service regeneration. However, the post-treatment of the tail gas treatment of some engineering machinery usually weighs more than one hundred kilograms, the disassembly and cleaning are time-consuming and labor-consuming, the post-treatment position of part of vehicle types is inconvenient to disassemble and assemble due to the structure of the whole vehicle, and the difficulty of service regeneration is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a tail gas treatment device and an operation machine, which are used for solving the defects that the tail gas treatment device in the prior art wastes time and labor and has poor effect in removing particulate matters and gray matters.
The utility model provides a tail gas treatment device, which comprises an oxidation catalyst, a collection box, a particle trap, a reduction catalyst, a first reversing valve and a second reversing valve, wherein the oxidation catalyst is arranged on the collection box;
the first reversing valve and the second reversing valve are mutually matched to enable the tail gas treatment device to be in a first operation mode or a second operation mode,
in the first operating mode, the gas flow flows in succession along the oxidation catalyst, the particle trap and the reduction catalyst,
in the second operating mode, the gas flow passes through the oxidation catalyst, the particle trap, the collection box and the reduction catalyst in sequence;
wherein in the first mode of operation and in the second mode of operation the flow of gas in the particle trap is reversed.
According to the tail gas treatment device provided by the utility model, the oxidation catalyst, the first reversing valve, the collection box, the particle trap, the second reversing valve and the reduction catalyst are sequentially connected through a main pipeline, the first reversing valve is connected with the particle trap through a first branch, and the collection box is connected with the second reversing valve through a second branch;
the collecting box comprises a box body and a filter screen, the filter screen is rotatably arranged in the box body, the filter screen is parallel to the air flow direction in the box body in the first operation mode, and an included angle is formed between the filter screen and the air flow direction in the box body in the second operation mode.
According to the tail gas treatment device provided by the utility model, in the second operation mode, the filter screen is perpendicular to the airflow direction in the box body.
According to the tail gas treatment device provided by the utility model, the oxidation catalyst, the first reversing valve, the collection box, the particle trap, the second reversing valve and the reduction catalyst are sequentially connected through a main pipeline, the first reversing valve is connected with the particle trap through a first branch pipeline, the collection box is connected with the second reversing valve through a second branch pipeline, and the collection box is arranged on the second branch pipeline.
According to the tail gas treatment device provided by the utility model, the collection box comprises a box body, a filter screen, a vibration motor and a dust collection box, wherein the filter screen is arranged in the box body, the vibration motor is connected with the filter screen, and the dust collection box is arranged below the filter screen to bear dust falling from the filter screen.
The tail gas treatment device provided by the utility model further comprises a controller, wherein a differential pressure sensor is arranged on the collection box, and the controller controls the vibration motor according to a differential pressure value of the differential pressure sensor.
According to the tail gas treatment device provided by the utility model, the collecting box comprises a box body and the filter screen, and the filter screen is detachably arranged in the box body.
The tail gas treatment device provided by the utility model further comprises an alarm, wherein a detector for detecting the dust collection amount is arranged on the collection box, and the alarm is in communication connection with the detector.
According to the tail gas treatment device provided by the utility model, the particle catcher is provided with the second differential pressure sensor, and the controller controls the conduction passages of the first reversing valve and the second reversing valve according to the acquisition value of the second differential pressure sensor so as to switch the operation mode.
The utility model also provides a working machine which comprises an engine and the tail gas treatment device, wherein the air outlet of the engine is connected with the tail gas treatment device.
According to the tail gas treatment device and the operation machine provided by the utility model, the controller is used for controlling the conduction paths of the first reversing valve and the second reversing valve, the operation mode of the tail gas treatment device is switched, the flowing direction of the airflow in the particle catcher is further adjusted, the reverse purging of the particle catcher is realized, the tail gas is used for clearing carbon particles in the particle catcher, and also can be used for clearing incombustible gray matter in the particle catcher, the service life of the particle catcher is prolonged, and the filtering efficiency of the particle catcher is improved. Meanwhile, the impurities blown back from the particle trap are collected by the collecting box, so that the impurities are prevented from directly flowing to the next structure or being discharged into the air, and the air pollution is prevented.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a vent gas treatment device provided in accordance with the present invention in a first mode of operation;
FIG. 2 is a schematic illustration of the exhaust treatment device provided by the present invention in a second mode of operation;
reference numerals:
10. an engine; 20. an oxidation catalyst; 30. a collection box; 31. a differential pressure sensor; 32. A vibration motor; 40. a particle trap; 41. a second differential pressure sensor; 50. a reduction catalyst; 60. a controller; 70. a first direction changing valve; 71. a first branch; 80. a second directional control valve; 81. a second branch.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.
The following describes an exhaust gas treatment device according to the present invention with reference to fig. 1 to 2.
As shown in fig. 1 and 2, the exhaust gas treatment device according to the embodiment of the present invention includes an oxidation catalyst 20, a collection box 30, a particulate trap 40, and a reduction catalyst 50. Oxidation catalyst 20 is connected to opposite sides of particulate trap 40 by a first diverter valve 70, and opposite sides of particulate trap 40 are connected to reduction catalyst 50 by a second diverter valve 80.
The first and second directional valves 70 and 80 cooperate to place the exhaust gas treatment device in either the first or second mode of operation. In the first operating mode, the gas flow flows through the oxidation catalytic converter, the particle trap and the reduction catalytic converter in succession. In the second operating mode, the gas flow passes through the oxidation catalyst, the particle trap, the collection tank and the reduction catalyst in sequence. Wherein the flow of gas in the particle trap 40 is reversed in the first mode of operation and in the second mode of operation.
As shown in fig. 1 and 2, the oxidation catalyst 20, the particulate trap 40, and the reduction catalyst 50 are connected in series by a main line, and a first direction valve 70 is provided between the oxidation catalyst 20 and the particulate trap 40, and a second direction valve 80 is provided between the particulate trap 40 and the reduction catalyst 50. In particular, the first directional valve 70 communicates with a first side of the particle catcher 40 via a main line, and the first directional valve 70 communicates with a second side of the particle catcher 40 via a first branch 71. The second side of the particle catcher 40 communicates with the second directional valve 80 via a main line and the first side of the particle catcher 40 communicates with the second directional valve 80 via a second branch 81.
In an alternative embodiment, the collecting box 30 is mounted on the second branch 81, so that when the exhaust gas treatment device is in the second operation mode, the exhaust gas flows through the particle catcher 40 and enters the collecting box 30, and the impurities blown back from the particle catcher 40 are collected by the collecting box 30. In yet another alternative embodiment, the collection tank 30 is mounted on the main line between the first diverter valve 70 and the particle catcher 40. A rotatable filter screen is mounted in the collection box 30. In the first operating mode, the exhaust gas enters the collecting tank 30 after passing through the oxidation catalyst 20, the flow direction of the exhaust gas in the collecting tank 30 is parallel to the filter screen, and the filter screen does not function at this time, and the collecting tank 30 is only used as a pipeline for air flow circulation. In the second mode of operation, the filter screen rotates to filter the gas exhausted from the particulate trap 40, thereby collecting the impurities blown back from the particulate filter and extending the useful life of the particulate trap 40.
Specifically, the inlet of the first direction valve 70 is connected to the oxidation catalyst 20, the first outlet of the first direction valve 70 is connected to a first side port of the particle trap 40, the second outlet of the first direction valve 70 is connected to a second side port of the particle trap 40, and the first side port is opposite to the second side port. The first inlet of the second directional valve 80 is connected to the particle trap 40, the second inlet of the second directional valve 80 is connected to the collection tank 30, and the outlet of the second directional valve 80 is connected to the reduction catalyst 50.
The first and second operation modes can be formed by switching the communication passages of the first and second direction valves 70 and 80. As shown in fig. 1, the first and second directional valves 70 and 80 place the entire exhaust gas treatment device in a first mode of operation, with the oxidation catalyst 20 in communication with a first side of the particulate trap 40 and the particulate trap 40 in communication with a second side of the reduction catalyst 50. At this time, the first branch 71 and the second branch 81 are both in the non-conducting state, and the exhaust gas passes through the oxidation catalyst 20, the particulate filter 40, and the reduction catalyst 50 and is discharged. The first and second switching valves 70, 80 are switched to conduct the first and second branches 71, 81, and the exhaust gas treatment device is in the second operating mode. As shown in FIG. 2, oxidation catalyst 20 is in communication with a second side of particulate trap 40, and a first side of particulate trap 40 is in communication with reduction catalyst 50. The exhaust gas is discharged along the oxidation catalyst 20, the particulate trap 40, the collection tank 30 and the reduction catalyst 50.
According to the tail gas treatment device provided by the embodiment of the utility model, the conduction paths of the first reversing valve 70 and the second reversing valve 80 are adjusted to switch the tail gas treatment device between the first operation mode and the second operation mode, so that the flow direction of the gas flow in the particle trap 40 is adjusted, reverse purging of the particle trap 40 is realized, carbon particles in the particle trap 40 can be removed by using the tail gas, unburned gray matter in the particle trap 40 can be removed, the service life of the particle trap 40 is prolonged, and the filtering efficiency of the particle trap 40 is improved. Meanwhile, the impurities blown back from the particle catcher 40 are collected by the filter screen in the collection box 30, so as to prevent the impurities from flowing to the next structure or being discharged into the air, thereby preventing the impurities from polluting the air.
In one embodiment of the present invention, as shown in fig. 1 and 2, the oxidation catalyst 20, the first direction changing valve 70, the collection tank 30, the particle trapper 40, the second direction changing valve 80, and the reduction catalyst 50 are sequentially connected through a main line, the first direction changing valve 70 is connected to the particle trapper 40 through a first branch line 71, and the collection tank 30 is connected to the second direction changing valve through a second branch line 81.
The collecting box comprises a box body and a filter screen, and the filter screen is rotatably arranged in the box body. In a first operation mode, the filter screen is parallel to the flow direction of the air flow in the box body; under the second operation mode, an included angle is formed between the filter screen and the airflow direction in the box body.
Specifically, a rotating motor is further arranged in the box body, and an output shaft of the rotating motor is connected with the filter screen to drive the filter screen to rotate in the box body. The controller 60 is communicatively connected to the rotating motor, and the controller 60 controls the operation of the rotating motor while the operation mode is switched to adjust the angle of the filter net so that it can filter impurities such as carbon particles and dust discharged from the inside of the particle trap 40.
As shown in fig. 1, in the first operation mode, the first branch 71 and the second branch 81 are not connected, the oxidation catalyst 20, the collection box 30, the particle trap 40 and the reduction catalyst 50 are sequentially communicated through the main pipeline, and the filter screen in the collection box 30 is parallel to the flow direction of the air flow in the box and is used as an air flow circulation channel. As shown in fig. 2, in the second operation mode, the first branch 71 and the second branch 81 are both open, the oxidation catalyst 20 is communicated with the particle trap 40 through the first branch 71, the gas outlet of the particle trap 40 is connected with the collecting tank 30, and the collecting tank 30 is connected with the reduction catalyst 50 through the second branch 81. The filter screen in the collection box 30 forms an included angle with the flow direction of the air flow in the box body, and impurities such as carbon particles and dust blown back from the particle catcher 40 can be filtered by the filter screen.
In the tail gas treatment device provided by the embodiment of the utility model, the collection box 30 is arranged on the main pipeline, the collection box 30 comprises a box body and a filter screen which is rotatably arranged in the box body, and the filter screen is rotated to adjust the function of the collection box 30 under different modes, so that the particle catcher 40 can be used for collecting blown impurities when in a second operation mode, namely a back flushing mode.
On the basis of the above embodiment, when in the second operation mode, the filter screen is perpendicular to the airflow direction in the box body.
The gas exiting the particle trap 40 is substantially filtered by a filter screen perpendicular to the direction of flow of the gas stream.
In yet another embodiment of the present invention, the oxidation catalyst 20, the first direction valve 70, the collection tank 30, the particulate trap 40, the second direction valve 80, and the reduction catalyst 50 are connected in series by a main line. The first directional valve 70 is connected to the particle catcher 40 via a first branch 71, and the collecting tank 30 is connected to the second directional valve 80 via a second branch 81. The collecting bin 30 is mounted on the second branch 81.
In this embodiment, the collecting box 30 is disposed on the second branch 81, when the exhaust gas treatment device is in the second operation mode, the second branch 81 where the collecting box 30 is located is conducted, and the airflow reversely flows through the particle catcher 40 to blow back the particle catcher 40, so that the dust accumulated in the first operation mode is blown back and flows to the collecting box 30 along with the airflow.
The collecting box comprises a box body and a filter screen, the filter screen can be detachably mounted in the box body so as to be conveniently dismounted and cleaned, and can also be fixedly mounted in the box body.
In the exhaust gas treatment device provided by the embodiment of the present invention, the collecting box 30 is installed on the second branch 81, and in the second operation mode in which the second branch 81 is conducted, the collecting box 30 participates in the air flow circulation to collect the impurities reversely blown out by the particle catcher 40.
In an alternative embodiment of the present invention, the collecting box 30 includes a box body, a filter screen installed in the box body, a vibration motor 32 connected to the filter screen, and a dust collecting box disposed below the filter screen to receive dust falling from the filter screen.
The vibration motor 32 is connected with the filter screen, and under the action of the vibration motor 32, the filter screen vibrates to vibrate the carbon particles and dust collection on the filter screen, and the carbon particles and dust collection are received by a dust collection box arranged below the filter screen. Wherein, the vibration motor 32 is connected with the controller 60, and the controller 60 controls the vibration motor 32 to vibrate according to the timing cleaning of the using time of the filter screen or by adopting other cleaning programs.
According to the tail gas treatment device provided by the embodiment of the utility model, the vibration motor 32 is used for automatically removing dust accumulated on the filter screen, so that the air flow passing through the filter screen is improved, and the treatment effect of the tail gas treatment device is improved.
On the basis of the above embodiment, the controller 60 is in communication connection with the vibration motor 32, the collecting tank 30 is provided with the differential pressure sensor 31, and the controller 60 controls the vibration motor 32 to operate according to the differential pressure value collected by the differential pressure sensor 31.
Specifically, the maximum allowable accumulation of carbon particles and ash in collection bin 30 is KS0The real-time accumulation amount detected by the differential pressure sensor 31 is KS. During engine operation, as the real-time accumulation K of carbon particles and ash in collection tank 30 occursSNot less than the maximum allowable accumulation K of carbon particles and ash in collection bin 30S0At this time, the controller 60 controls the vibration motor 32 to operate, starts the vibration mode, and stops after the vibration continues for a preset time.
According to the tail gas treatment device provided by the embodiment of the utility model, the differential pressure sensor 31 is arranged on the collecting box 30, and the controller 60 controls the vibration motor 32 to start the vibration mode according to the differential pressure value collected by the differential pressure sensor 31 so as to remove dust on the filter screen and improve the filtering effect of the filter screen.
In yet another alternative embodiment of the present invention, the collection box 30 includes a box body and a filter net detachably mounted in the box body.
The filter screen can be conveniently detached for cleaning according to the requirement. Specifically, the box body is provided with a pressure difference sensor and an alarm, and the controller 60 sends an alarm to control the alarm according to the pressure difference collected by the pressure difference sensor to remind an operator to manually disassemble the filter screen for cleaning.
On the basis of the above embodiment, the tail gas treatment device further comprises an alarm, the collecting box 30 is provided with a detector for detecting the dust collecting amount, and the alarm is in communication connection with the detector.
Specifically, a dust collection box is arranged in the collection box 30, a detector such as a weighing sensor or a dust depth detector is arranged in the dust collection box, and when the detection value of the detector is not less than the set value of a user, an alarm gives an alarm to remind the user to open the box body and pour out dust collection in the dust collection box. If the filter screen is detachably arranged in the box body, the pressure difference sensor arranged on the box body is used as a detector, and the alarm gives an alarm according to the acquisition value of the pressure difference sensor.
Wherein, the alarm can be a voice alarm, a flash lamp alarm or an audible and visual alarm. Alternatively, the alarm may be connected to the instrument desk of the work machine to send an alarm signal.
It should be noted that the alarm may be directly connected to the detector in communication. Alternatively, the alarm and the detector are respectively connected with the controller 60 in a communication way, and the controller 60 controls the alarm according to the detection value of the detector.
According to the tail gas treatment device provided by the embodiment of the utility model, the alarm is used for reminding a user of cleaning the collecting box 30.
On the basis of any of the above embodiments, the exhaust gas treatment device further includes a controller, the particle trap 40 is provided with a second differential pressure sensor 41, and the controller 60 controls the conduction paths of the first directional valve 70 and the second directional valve 80 according to the collected value of the second differential pressure sensor 41.
As shown in FIGS. 1 and 2, a second differential pressure sensor 41 is provided on the particulate trap 40 to detect a real-time accumulation K of carbon and gray particles in the particulate trap 40D. Real-time accumulation of carbon and ash K in the particulate trap 40DLess than the maximum allowable accumulation K of carbon and gray matter in the particulate trap 40D0When the controller 60 controls the first and second directional valves 70 and 80 to be in the first operation mode, the first branch 71 and the second branch 81 are not conducted, and the engine exhaust passes through the oxidation catalyst, the first directional valve 70, the collection box 30, the particulate trap 40, the second directional valve 80, and the reduction catalyst 50 to be discharged. When K isDNot less than KD0The first and second direction valves 70, 80 are switched to the second operating mode, in which both the first branch 71 and the second branch 81 are open. The engine tail gas is sequentially oxidized by the catalyst, the first reversing valve 70, the first branch 71 to the particle catcher 40, the collecting box 30, the second branch 81 to the second reversing valve 80 and finally discharged through the reduction catalyst 50, thereby realizing the purpose of back flushing the particle catcher 40.
Of course, the controller 60 can also automatically switch the conduction paths of the first direction valve 70 and the second direction valve 80 according to the required time.
According to the tail gas treatment device provided by the embodiment of the utility model, the first reversing valve 70 and the second reversing valve 80 are controlled by the pressure difference value collected by the second pressure difference sensor 41 arranged on the particle catcher 40, the operation mode is switched in time, and the dust collection deposited on the particle catcher 40 is cleaned.
The embodiment of the utility model also provides a working machine, which comprises the exhaust gas treatment device and the engine 10, wherein an exhaust port of the engine 10 is connected with the oxidation catalyst 20.
The operation machine is a crane, an excavator, a road roller and the like, the engine 10 is a diesel engine, the cleaning is performed by the aid of the tail gas treatment device, and no matter in the first operation mode or the second operation mode, the tail gas flows through the oxidation catalyst 20, the particle trap 40 and the reduction catalyst 50, so that pollution is avoided. In addition, a blowing device is not needed, the first reversing valve 70 and the second reversing valve 80 are controlled to switch the operation mode, the particle catcher 40 can be blown back by utilizing the exhaust of the engine 10, and the structure is simple and reliable.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The tail gas treatment device is characterized by comprising an oxidation catalyst, a collection box, a particle trap, a reduction catalyst, a first reversing valve and a second reversing valve;
the first reversing valve and the second reversing valve are mutually matched to enable the tail gas treatment device to be in a first operation mode or a second operation mode,
in the first operating mode, a gas flow flows through the oxidation catalyst, the particle trap and the reduction catalyst in succession,
in the second operating mode, the gas flow passes through the oxidation catalyst, the particle trap, the collection box and the reduction catalyst in sequence;
wherein in the first mode of operation and in the second mode of operation the flow of gas in the particle trap is reversed.
2. The exhaust gas treatment device according to claim 1, wherein the oxidation catalyst, the first directional valve, the collection tank, the particulate trap, the second directional valve, and the reduction catalyst are sequentially connected by a main line, the first directional valve is connected to the particulate trap by a first branch line, and the collection tank is connected to the second directional valve by a second branch line;
the collecting box comprises a box body and a filter screen, the filter screen is rotatably arranged in the box body, the filter screen is parallel to the air flow direction in the box body in the first operation mode, and an included angle is formed between the filter screen and the air flow direction in the box body in the second operation mode.
3. The exhaust gas treatment device according to claim 2, wherein in the second mode of operation, the filter screen is perpendicular to the direction of airflow within the housing.
4. The exhaust gas treatment device according to claim 1, wherein the oxidation catalyst, the first directional valve, the collection box, the particulate trap, the second directional valve and the reduction catalyst are sequentially connected by a main line, the first directional valve is connected to the particulate trap by a first branch line, the collection box is connected to the second directional valve by a second branch line, and the collection box is installed on the second branch line.
5. The exhaust gas treatment device according to claim 1, wherein the collection box comprises a box body, a filter screen, a vibration motor and a dust collection box, the filter screen is arranged in the box body, the vibration motor is connected with the filter screen, and the dust collection box is arranged below the filter screen to receive dust falling from the filter screen.
6. The exhaust gas treatment device according to claim 5, further comprising a controller, wherein the collection box is provided with a differential pressure sensor, and the controller controls the vibration motor according to a differential pressure value of the differential pressure sensor.
7. The exhaust gas treatment device according to claim 1, wherein the collection box comprises a box body and a filter screen, and the filter screen is detachably mounted in the box body.
8. The exhaust gas treatment device according to any one of claims 5 to 7, further comprising an alarm, wherein the collection box is provided with a detector for detecting the dust collection amount, and the alarm is in communication connection with the detector.
9. The exhaust gas treatment device according to claim 1, further comprising a controller, wherein a second differential pressure sensor is disposed on the particle trap, and the controller controls the conduction paths of the first directional valve and the second directional valve according to a value collected by the second differential pressure sensor to switch the operation mode.
10. A working machine comprising an engine and an exhaust gas treatment device according to any of claims 1 to 9, the engine having an outlet connected to the exhaust gas treatment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220218081.2U CN216767521U (en) | 2022-01-26 | 2022-01-26 | Tail gas treatment device and operation machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220218081.2U CN216767521U (en) | 2022-01-26 | 2022-01-26 | Tail gas treatment device and operation machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216767521U true CN216767521U (en) | 2022-06-17 |
Family
ID=81979324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220218081.2U Active CN216767521U (en) | 2022-01-26 | 2022-01-26 | Tail gas treatment device and operation machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216767521U (en) |
-
2022
- 2022-01-26 CN CN202220218081.2U patent/CN216767521U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9885269B2 (en) | Gas flow regulating for cleaning a particular filter | |
| US8256060B2 (en) | Apparatus for cleaning exhaust aftertreatment devices and methods | |
| US7410530B2 (en) | Apparatus for cleaning exhaust aftertreatment devices and methods | |
| CN109366362B (en) | Welding fume purification device convenient to circulate and replace | |
| CN201644480U (en) | Multi-station welding fume purifying system | |
| CN100582450C (en) | Diesel exhaust system reversible particulate filter | |
| CN108361092A (en) | A kind of exhaust gas processing device with self-cleaning function | |
| CN214914726U (en) | Soil pyrolysis waste gas adsorption tower | |
| CN206325401U (en) | A kind of flue-gas dust-removing and desulfurization denitrification system | |
| CN112807915A (en) | Intelligent control dust removal system and method | |
| JP2003284911A (en) | Dust collector, dust collection method and incineration equipment equipped with the dust collector | |
| CN219348633U (en) | Monitoring device for monitoring waste gas in industrial production factory | |
| CN216767521U (en) | Tail gas treatment device and operation machinery | |
| KR101983313B1 (en) | Dust collecting apparatus for automobile | |
| CN214075963U (en) | Filter SCR flue gas denitrification facility | |
| CN216361025U (en) | Motor vehicle tail gas filtering and cleaning valve based on vehicle-mounted remote monitoring system | |
| US20100037423A1 (en) | Apparatus for Cleaning Exhaust Aftertreatment Devices and Methods | |
| CN217931576U (en) | Multifunctional detection device for monitoring automobile exhaust | |
| CN114307438B (en) | Ship tail gas black carbon deep removal system and method based on charge enhanced filtration | |
| CN113356970B (en) | Air intake and exhaust system for removing dust of national six-GPF (general purpose power factor filter) of engine and control method of air intake and exhaust system | |
| KR200324728Y1 (en) | Soot collection system for automobile | |
| CN217681951U (en) | Automobile exhaust emission pipe capable of reducing air pollution | |
| CN219355786U (en) | Flue gas purifier and flue gas treatment system | |
| CN220805953U (en) | Automatic ash removal welds cigarette clarifier | |
| CN210905492U (en) | Air purification equipment for building engineering construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |