An exhaust treatment device based on a diesel engine exhaust port

Abstract

The application relates to the technical field of air suction devices, and discloses a diesel engine exhaust port-based exhaust treatment device, which comprises a water pump, one side of the water pump is provided with a diesel engine, one side of the diesel engine is connected with an inlet pipeline, the other side of the diesel engine is connected with a machine body exhaust port, the diesel engine and the water pump are electrically connected, and the tail end of the machine body exhaust port is connected with an outlet pipeline. The diesel engine exhaust port-based exhaust treatment device forms a high-speed jet flow by guiding diesel engine exhaust into a jet pump to provide air suction power, does not need an additional power source, greatly reduces comprehensive energy consumption and improves energy utilization efficiency; the stable pressure assembly can stabilize air suction negative pressure and adapt to different working conditions by means of the following: a conical gas conveying pipe for strengthening negative pressure, an L-shaped flow guide plate and a movable spoiler for flexibly adjusting the space of an air suction pipeline, and a reset spring and a movable port for self-adaptingly adjusting the diameter of an air outlet.

Description

Technical Field

[0001] This invention relates to the field of intake device technology, and more particularly to an exhaust gas treatment device based on the exhaust port of a diesel engine. Background Technology

[0002] In industrial and civilian applications requiring a vacuum environment, such as chemical vacuum distillation, vacuum drying, and food vacuum packaging, existing technologies typically use independent motors to drive the intake components to generate negative pressure for gas extraction. Meanwhile, in these applications, diesel engines, which are the core power source, often directly discharge the high-temperature, high-pressure exhaust gas without recovering or utilizing the kinetic energy contained in the exhaust. Only some devices use conventional filters for pretreatment to prevent particulate impurities in the exhaust from clogging the intake components. The overall system lacks a design concept that integrates power coordination and functionality.

[0003] Existing intake devices rely on additional power sources such as independent motors, which not only leads to cumulative energy consumption but also results in a complex overall equipment layout due to the need for additional power equipment and control systems. Secondly, the exhaust kinetic energy of diesel engines is directly wasted, resulting in low energy utilization efficiency. Furthermore, the pressure stabilization performance is poor, making it prone to unstable intake negative pressure and large fluctuations in intake pipeline flow velocity due to airflow fluctuations. Moreover, the lack of a flexible airflow adjustment structure makes it impossible to adapt to the suction requirements under different working conditions, which seriously affects the continuous operation efficiency of the equipment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing technology has the disadvantages of relying on an additional power source for the intake device, resulting in superimposed energy consumption, complex equipment layout, and energy waste due to the failure to recover the kinetic energy of diesel engine exhaust. To this end, we propose an exhaust gas treatment device based on the diesel engine exhaust port.

[0005] To achieve the above objectives, this application adopts the following technical solution: an exhaust gas treatment device based on a diesel engine exhaust port, including a water pump, a diesel engine is provided on one side of the water pump, an inlet pipe is connected to one side of the diesel engine, an exhaust port of the engine body is connected to the other side of the diesel engine, the diesel engine and the water pump are electrically connected, and an outlet pipe is connected to the end of the exhaust port of the engine body.

[0006] The outlet pipe is connected to a jet pump at its end. A pressure stabilizing component is embedded inside the jet pump. The pressure stabilizing component includes an air supply pipe. A return spring is connected to one side of the air supply pipe. A positioning tube is also embedded inside the jet pump. A movable port is connected to the end of the return spring away from the air supply pipe. A guide plate and a movable spoiler are embedded inside the positioning tube. A sliding rod is connected to the surface of the positioning tube. The sliding rod passes through the interior of the movable spoiler. The movable spoiler and the positioning tube are slidably connected.

[0007] The top of the jet pump is connected to a filter assembly, which includes a filter tube. An installation tube is embedded inside the filter tube. An isolation ring and a wrapping sleeve are connected to the outer surface of the installation tube. A guide rod is fixedly connected inside the filter tube and passes through the inside of the isolation ring. A filter element is embedded inside the installation tube. A guide groove is formed on the surface of the filter tube.

[0008] Preferably, the pressure stabilizing component is located in the middle of the injection pump, and the filter component is located at the top of the injection pump, directly above the pressure stabilizing component.

[0009] Preferably, the bottom end of the gas supply pipe is tapered, and the bottom end of the gas supply pipe corresponds to the intake pipe. High-speed gas is introduced into the gas supply pipe to draw in air from inside the intake pipe.

[0010] Preferably, the interior of the positioning tube is configured as a hollow tubular structure, and a slot is provided in the middle of the positioning tube, in which the guide plate and the movable spoiler are both embedded.

[0011] Preferably, the guide plate is fixedly connected to the inner wall of the groove opened in the positioning tube, and the movable baffle slides in the groove opened in the positioning tube via a slide rod.

[0012] Preferably, the guide plate and the movable spoiler are L-shaped, and the guide plate and the movable spoiler penetrate the interior of the positioning tube and their ends are embedded in the interior of the intake pipe.

[0013] Preferably, the top of the movable spoiler is connected to a insert, the top of the insert is connected to a positioning tube, and the movable spoiler and the movable port are connected through the positioning tube.

[0014] Preferably, the active port is conical and corresponds to the air supply pipe. In the initial state, the air supply pipe and the active port are connected by a return spring. When the return spring is initially contracted, there is a channel for air circulation between the air supply pipe and the return spring.

[0015] Preferably, the outlet pipe is connected to the top of the jet pump and is connected to the filter pipe. The air introduced through the outlet pipe is delivered to the interior of the jet pump through the filter element, which is used to filter the introduced air.

[0016] Preferably, the air introduced through the outlet pipe pushes the isolation ring to slide on the surface of the mounting pipe until the isolation ring crosses the guide groove; the air introduced through the outlet pipe is delivered to the interior of the jet pump through the guide groove.

[0017] The technical effects and advantages of this invention are as follows:

[0018] In this invention, diesel engine exhaust is introduced into an injection pump to form a high-speed jet to provide intake power, eliminating the need for an additional power source, significantly reducing overall energy consumption and improving energy utilization efficiency. The pressure stabilizing component uses a conical air delivery pipe to enhance negative pressure, an L-shaped guide plate and a movable spoiler to flexibly adjust the intake pipe space, and a return spring and movable port to adaptively adjust the outlet diameter, which can stabilize the intake negative pressure and adapt to different working conditions. The filter component effectively filters impurities through the filter element, and when the filter element is clogged, the isolation ring can automatically slide down to trigger the emergency vent, achieving seamless switching between filtration and emergency flow, avoiding downtime and ensuring continuous operation of the equipment. The overall structure is simplified, reducing complex mechanical parts and control systems, lowering manufacturing costs and maintenance difficulty. It can also be customized according to the diesel engine model and actual working conditions, making it suitable for various scenarios requiring intake functions and highly practical. Attached Figure Description

[0019] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts:

[0020] Figure 1 This is a three-dimensional structural diagram of the water pump and inlet pipe of the present invention;

[0021] Figure 2 This is a front view schematic diagram of the intake pipe and jet pump of the present invention;

[0022] Figure 3 This is a schematic diagram of the intake pipe and jet pump of the present invention;

[0023] Figure 4 This is a side view of the jet pump and the exhaust port of the pump body of the present invention;

[0024] Figure 5 This is a schematic diagram of the first state of the guide vane and movable spoiler of the present invention;

[0025] Figure 6 This is a schematic diagram of the second state of the guide vane and movable spoiler of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the insert and movable spoiler of the present invention;

[0027] Figure 8 This is a schematic cross-sectional view of the gas delivery pipe and movable port of the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of the isolation ring and mounting tube of the present invention;

[0029] Figure 10 This is a cross-sectional structural diagram of the filter tube of the present invention.

[0030] Legend: 11. Water pump; 12. Inlet pipe; 13. Diesel engine; 14. Engine exhaust port; 15. Outlet pipe; 16. Intake pipe; 17. Injection pump; 18. Pump body exhaust port; 2. Pressure stabilizing assembly; 21. Air delivery pipe; 22. Return spring; 23. Movable port; 24. Guide plate; 25. Positioning tube; 26. Insert; 27. Movable spoiler; 28. Slide rod; 3. Filter assembly; 31. Filter tube; 32. Guide groove; 33. Mounting tube; 34. Isolation ring; 35. Filter element; 36. Guide rod; 37. Wrapping sleeve. Detailed Implementation

[0031] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0032] Reference Figures 1-10 As shown, the present invention provides a technical solution: an exhaust gas treatment device based on a diesel engine exhaust port, including a water pump 11, a diesel engine 13 is provided on one side of the water pump 11, an inlet pipe 12 is connected to one side of the diesel engine 13, an exhaust port 14 is connected to the other side of the diesel engine 13, the diesel engine 13 and the water pump 11 are electrically connected, and an outlet pipe 15 is connected to the end of the exhaust port 14.

[0033] Traditional intake devices require an additional power source, such as an independent motor to drive the intake components, which leads to problems such as cumulative energy consumption and complex equipment layout. Furthermore, the exhaust gas generated during the operation of the diesel engine 13 is directly emitted without recovering its kinetic energy, resulting in energy waste. By electrically linking the diesel engine 13 and the water pump 11, the core power and auxiliary functions of the device can be coordinated and controlled. At the same time, the exhaust gas of the diesel engine 13 is guided by the outlet pipe 15, converting the kinetic energy of the exhaust gas into the power required for intake, eliminating the need for an additional power source and reducing overall energy consumption.

[0034] The outlet pipe 15 is connected to a jet pump 17. A pressure stabilizing component 2 is embedded inside the jet pump 17. The pressure stabilizing component 2 includes an air supply pipe 21, the bottom of which is tapered and corresponds to the intake pipe 16. High-speed gas is introduced into the air supply pipe 21 to draw air from the intake pipe 16. A return spring 22 is connected to one side of the air supply pipe 21. A positioning tube 25 is also embedded inside the jet pump 17. The positioning tube 25 has the following internal design: The positioning tube 25 has a hollow tubular structure with a slot in the middle. Both the guide plate 24 and the movable baffle 27 are embedded in this slot. The guide plate 24 is fixedly connected to the inner wall of the slot in the positioning tube 25. The movable baffle 27 slides within the slot via a slide rod 28. A movable port 23 is connected to the end of the return spring 22 away from the air supply pipe 21. The positioning tube 25 contains the guide plate 24 and the movable baffle 27. The movable spoiler 27 is L-shaped. The guide plate 24 and the movable spoiler 27 pass through the interior of the positioning tube 25 and their ends are embedded in the interior of the intake pipe 16. The top of the movable spoiler 27 is connected to the insert 26, and the top of the insert 26 is connected to the positioning tube 25. The movable spoiler 27 and the movable port 23 are connected through the positioning tube 25. The movable port 23 is conical and corresponds to the air supply pipe 21. In the initial state, the air supply pipe 21 and the movable port 23 are connected through the return spring 22. When the return spring 22 is initially contracted, there is a channel for air circulation between the air supply pipe 21 and the return spring 22. The surface of the positioning tube 25 is connected to the slide rod 28, which passes through the interior of the movable spoiler 27. The movable spoiler 27 and the positioning tube 25 are slidably connected. The pressure stabilizing component 2 is located in the middle of the jet pump 17, and the filter component 3 is located at the top of the jet pump 17, directly above the pressure stabilizing component 2.

[0035] Traditional suction devices are prone to unstable suction negative pressure due to airflow fluctuations, resulting in large variations in flow velocity in the suction pipe 16 and affecting suction efficiency. Furthermore, they lack a flexible airflow adjustment structure, making it unable to adapt to suction requirements under different operating conditions. By incorporating a conical air delivery pipe 21, the focusing of high-speed airflow is enhanced, increasing the negative pressure intensity at the suction pipe 16 and ensuring suction efficiency. Additionally, the cooperation between the L-shaped guide plate 24 and the movable baffle 27 allows for adjustment of their distance via a sliding rod 28, flexibly altering the internal flow space of the suction pipe 16. When the flow velocity decreases, the space is reduced to increase the flow velocity, compensating for insufficient pressure difference. The combination of the return spring 22 and the conical movable port 23 automatically adjusts the outlet diameter of the air delivery pipe 21, achieving adaptive and stable air pressure and avoiding suction fluctuations caused by airflow impact. The insert 26 enhances the connection stability between the movable baffle 27 and the positioning tube 25, ensuring structural reliability during adjustment and reducing maintenance frequency.

[0036] A filter assembly 3 is connected to the top of the jet pump 17. The filter assembly 3 includes a filter tube 31, an installation tube 33 is embedded inside the filter tube 31, an isolation ring 34 and a sleeve 37 are connected to the outer surface of the installation tube 33, a guide rod 36 is fixedly connected inside the filter tube 31, the guide rod 36 passes through the inside of the isolation ring 34, a filter element 35 is embedded inside the installation tube 33, and a guide groove 32 is opened on the surface of the filter tube 31. An outlet pipe 15 is connected to the top of the jet pump 17 and communicates with the filter tube 31. Air entering through the outlet pipe 15 is transported to the inside of the jet pump 17 through the filter element 35. The filter element 35 is used to filter the incoming air. The air entering through the outlet pipe 15 pushes the isolation ring 34 to slide on the surface of the installation tube 33 until the isolation ring 34 crosses the guide groove 32. The air entering through the outlet pipe 15 is transported to the inside of the jet pump 17 through the guide groove 32.

[0037] Particulate matter impurities in the exhaust gas of diesel engine 13 can easily clog the internal channels of injection pump 17, leading to increased airflow resistance, decreased exhaust volume, and consequently suction failure. Traditional filtration devices require frequent shutdowns to replace filter element 35, affecting the continuous operation efficiency of the equipment and lacking an emergency circulation mechanism. When filter element 35 is clogged, the device is directly paralyzed. Filter element 35 can effectively filter particulate matter impurities in the exhaust gas, preventing impurities from entering the injection pump 17 and causing channel blockage, ensuring smooth airflow. Guide rod 36 can limit the sliding trajectory of isolation ring 34, ensuring its stability under air pressure. The movement of the filter element 35 prevents seal failure due to displacement. When the filter element 35 becomes clogged, causing the internal pressure of the filter tube 31 to rise, the isolation ring 34 slides down along the guide rod 36 and passes over the guide groove 32, triggering the opening of the emergency through hole covered by the sleeve 37. This allows some exhaust gas to enter the jet pump 17 without passing through the guide groove 32 of the filter element 35, achieving seamless switching between filtration and emergency flow. This avoids equipment shutdown due to filter element 35 clogging and improves the continuous operation capability of the equipment. The structural design of the mounting tube 33 facilitates the disassembly and replacement of the filter element 35, reducing maintenance difficulty and maintenance time costs.

[0038] Working principle

[0039] Vacuum environments are frequently required in many industrial production processes and some specialized civilian applications, such as vacuum distillation and vacuum drying in the chemical industry, and vacuum packaging in the food industry. Existing suction devices suffer from problems such as complex structure, high energy consumption, and high maintenance costs. This invention aims to provide a simple, efficient, and energy-saving suction device that utilizes the energy of a diesel engine 13 to achieve the suction function. The specific operation is as follows:

[0040] When the diesel engine 13 is working, air is drawn in through the inlet pipe 12 to perform power stroke. After the stroke, exhaust gas is generated and discharged through the exhaust port 14. The exhaust gas is then introduced into the outlet pipe 15, and the end of the outlet pipe 15 is embedded into the injection pump 17. After filtration to remove particulate impurities from the air, the air introduced into the injection pump 17 is accelerated and finally discharged from the pump body exhaust port 18. When the diesel engine 13 is working, its exhaust port 14 discharges high-speed exhaust gas. This exhaust gas enters the power inlet of the injection pump 17, forming a high-speed jet inside the injection pump 17. According to the working principle of the injection pump 17, the high-speed jet generates negative pressure at the intake pipe 16, thereby drawing gas from the intake pipe 16 into the injection pump 17. The drawn-in gas mixes with the high-speed exhaust gas and is then discharged through the pump body exhaust port 18.

[0041] This device utilizes the exhaust energy of a diesel engine (model 13) to achieve the intake function, eliminating the need for an additional power source and significantly reducing energy consumption while improving energy efficiency. Compared to traditional intake devices, this device has a simpler structure, reducing many complex mechanical parts and control systems, thus lowering manufacturing and maintenance costs. Furthermore, this device can be customized to meet different operational requirements and diesel engine (model 13), making it suitable for various applications requiring intake functionality. Specific operation is as follows:

[0042] The internal structure of the injection pump 17 is optimized based on the exhaust flow rate, pressure, and intake requirements of the diesel engine 13 to ensure smooth gas discharge. To ensure unobstructed flow within the injection pump 17, pre-treatment of the exhaust gas ensures intake stability. During exhaust gas treatment, the exhaust gas is introduced into the injection pump 17 through the outlet pipe 15 and then transported to the mounting pipe 33. The filter element 35 inside the mounting pipe 33 filters particulate matter from the exhaust gas, and the filtered air is then delivered to the injection pump 17. To ensure sufficient airflow within the injection pump 17, the filter element 35's pore size must maintain an average exhaust volume of 200 m³ / h. As the filter element 35 captures particulate matter, its ventilation deteriorates, leading to a decrease in exhaust volume. When the exhaust volume drops to the standard value, the resulting negative pressure cannot generate suction. To ensure stable suction, if the flow rate of the filter element 35 deteriorates when the exhaust gas volume of the diesel engine 13 remains constant, the internal pressure of the filter tube 31 will increase. This will cause the isolation ring 34 to slide on the surface of the guide rod 36. As the isolation ring 34 slides, the space between the filter tube 31 and the upper part of the isolation ring 34 gradually increases. The downward sliding of the isolation ring 34 pushes the sleeve 37, causing the sleeve 37 to leave its initial position and exposing the through hole covered by the sleeve 37. At this time, some of the exhaust gas introduced into the filter element 35 does not need to pass through the entire filter element 35. When it reaches halfway through the filter element 35, it is discharged from the through hole on the surface of the filter element 35 and finally flows into the interior of the filter tube 31. The airflow introduced into the filter tube 31 flows through the guide groove 32 into the channel between the filter tube 31 and the injection pump 17, and finally is discharged into the interior of the injection pump 17 through the positioning tube 25, thereby achieving exhaust.

[0043] Furthermore, as the isolation ring 34 slides, when it passes the guide groove 32, due to the poor flowability caused by the blockage inside the filter element 35, air will be introduced into the interior of the filter tube 31 and finally discharged into the interior of the positioning tube 25 through the guide groove 32, where it will be ventilated through the hollow tubular structure of the positioning tube 25. When the filter tube 31 is embedded inside the jet pump 17, it divides the interior of the jet pump 17 into two parts: the filter assembly 3 in the upper part of the jet pump 17 is used to filter exhaust gas, and the pressure stabilizing assembly 2 in the lower part of the jet pump 17 is used to stabilize the pressure. The upper and lower parts of the jet pump 17 are separated from each other. One flow path is conducted through filter element 35, and the other through positioning tube 25. When filter element 35 is not blocked, gas can only flow through it due to the obstruction of isolation ring 34. When filter element 35 becomes blocked, its flow capacity decreases, and under pressure, isolation ring 34 slides down, connecting filter tube 31 and guide groove 32, allowing gas to flow through positioning tube 25. By taking emergency measures when filter element 35 is blocked, the gas flow rate inside jet pump 17 is maintained, thereby stabilizing the pressure and ensuring normal suction operation.

[0044] In addition, during pressure stabilization, the internal space is altered by adjusting the position of the movable port 23, causing changes in internal air pressure to ensure stable suction. When controlling the suction flow rate, a flow meter is installed inside the suction pipe 16 to measure the flow rate. When the flow rate decreases, i.e., the permeability of the filter element 35 deteriorates, the internal width of the suction pipe 16 is adjusted by changing the distance between the guide plate 24 and the movable baffle 27. As the distance between the guide plate 24 and the movable baffle 27 gradually decreases, the internal space shrinks. When the flow rate decreases, changing the space size increases the gas flow rate within the suction pipe 16, strengthening the negative pressure effect, compensating for insufficient pressure difference, and ultimately achieving stable suction.

[0045] Furthermore, when the positioning tube 25 is open, the introduced air flows through the positioning tube 25, and the airflow is closer to the top of the intake pipe 16. Guided by the guide plate 24 and the movable baffle 27, the gas inside the intake pipe 16 can be drawn out more easily. At the same time, the guide plate 24 and the movable baffle 27 move closer to each other, causing the movable port 23 to continuously approach and contact the air supply pipe 21. After contact, the outlet position changes from the air supply pipe 21 to the movable port 23. Since the diameter of the movable port 23 is smaller than that of the air supply pipe 21, the gas flow velocity inside the air supply pipe 21 is increased, thereby compensating for the insufficient flow velocity caused by the filter element 35 being clogged. The distance between the guide plate 24 and the movable baffle 27 is controlled by the drive unit, and the movable baffle 27 is pushed by a push rod.

[0046] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. An exhaust treatment device based on a diesel engine exhaust port, characterized by, Including water pump, one side of water pump is provided with diesel engine, one side of diesel engine is connected with import pipeline, the other side of diesel engine is connected with machine body exhaust port, diesel engine and water pump are electrically connected, the end of machine body exhaust port is connected with export pipeline; The end of the outlet pipeline is connected with a jet pump, the inside of the jet pump is embedded with a pressure stabilizing assembly, the pressure stabilizing assembly comprises a gas conveying pipe, one side of the gas conveying pipe is connected with a reset spring, the inside of the jet pump is also embedded with a positioning pipe, one end of the reset spring away from the gas conveying pipe is connected with a movable port, the inside of the positioning pipe is embedded with a guide vane and a movable spoiler, the surface of the positioning pipe is connected with a sliding rod, the sliding rod penetrates the inside of the movable spoiler, and the movable spoiler and the positioning pipe are connected in sliding mode. The top end of the jet pump is connected with a filter assembly, the filter assembly comprises a filter pipe, the inside of the filter pipe is embedded with a mounting pipe, the outer surface of the mounting pipe is connected with a separation ring and a wrapping sleeve, the inside of the filter pipe is fixedly connected with a guide rod, the guide rod penetrates the inside of the separation ring, the inside of the mounting pipe is embedded with a filter core, and the surface of the filter pipe is provided with a through groove.

2. The diesel exhaust based exhaust treatment device of claim 1, wherein: The pressure stabilizing assembly is arranged at the middle position of the jet pump, the filter assembly is arranged at the top end of the jet pump, and the filter assembly is located directly above the pressure stabilizing assembly.

3. The diesel exhaust based exhaust treatment device of claim 1, wherein: The bottom end of the gas conveying pipe is tapered, the bottom end of the gas conveying pipe corresponds to the air suction pipeline, and high-speed gas is introduced into the inside of the gas conveying pipe for sucking air from the inside of the air suction pipeline.

4. The diesel exhaust based exhaust treatment device of claim 1, wherein: The inside of the positioning pipe is arranged in a hollow tubular structure, and a slot is further formed at the middle position of the positioning pipe, and the guide vane and the movable spoiler are embedded in the slot.

5. The diesel exhaust based exhaust treatment device of claim 4, wherein: The guide vane is fixedly connected to the inner wall of the groove body formed in the positioning pipe, and the movable spoiler slides in the groove body of the positioning pipe through the sliding rod.

6. The diesel exhaust based exhaust treatment device of claim 5, wherein: The guide vane and the movable spoiler are arranged in L shape, penetrate the inside of the positioning pipe, and the ends thereof are embedded into the inside of the air suction pipeline.

7. The diesel exhaust based treatment device of claim 1, wherein: The top end of the movable spoiler is connected with a tab, the top end of the tab is connected with the positioning pipe, and the movable spoiler and the movable port are connected through the positioning pipe.

8. The diesel exhaust based exhaust treatment device of claim 7, wherein: The movable port is arranged in conical shape, corresponds to the gas conveying pipe, and in the initial state, the gas conveying pipe and the movable port are connected through the reset spring, and when the reset spring is in the initial contraction state, a channel for air flow is left between the gas conveying pipe and the reset spring.

9. The diesel exhaust based treatment device of claim 1, wherein: The outlet pipeline is connected at the top end of the jet pump and communicates with the filter pipe, air introduced through the outlet pipeline is conveyed to the inside of the jet pump through the filter core, and the filter core is used for filtering the introduced air.

10. The diesel exhaust based exhaust treatment device of claim 9, wherein: The air introduced through the outlet pipeline pushes the separation ring to slide on the surface of the mounting pipe until the separation ring passes through the through groove, and the air introduced through the outlet pipeline is conveyed to the inside of the jet pump through the through groove.

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