Vehicle exhaust gas detection device

Abstract

The present invention discloses a vehicle exhaust detection device, belonging to the field of automobile detection. The vehicle exhaust detection device comprises: a frame, a cyclone separator fixed to the frame, which is partially conical, has an air outlet at the upper end and an air inlet at the lower end; a detection mechanism connected to the air inlet; a filter connected to the air outlet, having a three-way catalyst fixedly installed therein; a filter box connected to the outlet of the filter, having multiple layers of filter screens installed therein; a waste oil pipeline provided on the outer wall of the cyclone separator; and an evaporation container connected to the end of the waste oil pipeline.

Description

Technical Field

[0001] The present invention relates to the field of automobile detection, and in particular to a vehicle exhaust detection device. Background Art

[0002] Existing vehicle inspection technologies address a range of requirements for exhaust gas testing, including performance testing, annual inspections, and environmental testing. This has led to the development of a variety of exhaust gas testing equipment. However, most existing equipment focuses solely on exhaust gas testing efficiency and accuracy, failing to address post-test exhaust gas treatment. This, coupled with the continuous and extensive use of vehicle inspections, is clearly detrimental to the work environment and human health. Furthermore, auto repair centers also face the need for large-scale waste oil treatment, but existing equipment struggles to integrate exhaust gas testing and treatment. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention proposes a vehicle exhaust gas detection device.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A vehicle exhaust gas detection device, comprising:

[0006] frame,

[0007] A cyclone separation cylinder fixed to the frame is partially conical, with an air outlet at the upper end and an air inlet at the lower end;

[0008] a detection mechanism, connected to the air inlet;

[0009] A filter connected to the air outlet has a three-way catalyst fixedly installed inside;

[0010] A filter box, connected to the outlet of the filter, and provided with multiple layers of filter screens;

[0011] A waste oil pipeline is provided on the outer wall of the cyclone separation cylinder;

[0012] and an evaporation container connected to the end of the waste oil pipeline.

[0013] Furthermore, it also includes a pickling cylinder connected to the filter box through a hose, and an air pump is connected in series to the hose to send the gas filtered in the filter box into the pickling cylinder for treatment.

[0014] Furthermore, a waste oil treatment tank is provided below the pickling barrel, and the drain outlet of the pickling barrel is connected to the waste oil treatment tank.

[0015] Furthermore, a vertically arranged slide rail 1 is installed on one side of the frame, a rack 1 is slidably connected to the slide rail 1, a horizontal push plate is fixedly installed at the lower end of the rack 1, and a stand for lifting the vehicle to be inspected is provided below the push plate; when the stand rises, it can lift the push plate;

[0016] A horizontal rotating shaft 2 and a vertically arranged screw are rotatably connected on the frame, a worm is coaxially fixedly mounted on the rotating shaft 2; a worm wheel is coaxially fixedly mounted on the screw; the worm wheel meshes with the worm; a gear 3 is coaxially fixedly mounted on the rotating shaft 2, and the gear 3 meshes with the rack 1;

[0017] The pickling cylinder includes an outer shell, a base and a rotating shaft; a vertically arranged motor is installed on the outside of the outer shell, a pulley is fixedly installed on the output shaft of the motor, and the rotating shaft is vertically arranged inside the outer shell and is rotatably connected to the outer shell; a spray arm is fixedly installed on the outer wall of the rotating shaft; the screw is threadedly connected to the base; a pulley is coaxially fixedly installed on the lower end of the rotating shaft, and the pulleys are connected to the pulleys through a transmission belt.

[0018] Furthermore, a gear 1 is fixedly mounted on the top of the rotating shaft 1, the filter box is cylindrical, a cylindrical filter screen is provided in the middle of the filter box, and the outlet of the filter box is provided inside the area surrounded by the filter screen;

[0019] The filter box is provided with a second slide rail arranged horizontally along a radial direction. The filter box is movably connected to a third rotating shaft. The connection between the third rotating shaft and the filter box is maintained airtight by an elastic film. The lower end of the third rotating shaft extends to the bottom of the filter box. The lower end of the third rotating shaft is fixedly mounted with a second gear, which can mesh with the first gear.

[0020] A top block is fixedly mounted on the top surface of the housing, and the top block is arranged just below the third rotating shaft;

[0021] A connecting rod is provided on the slide rail 2, one end of the connecting rod slides and is hinged to the slide rail 1, and the other end of the connecting rod is hinged to the upper end of the rotating shaft 3;

[0022] A brush is fixedly mounted on the lower end of the connecting rod for cleaning the outer wall of the filter screen.

[0023] Furthermore, the top of the filter box is provided with an end cover for closing it, and the bottom surface of the filter box is a detachable base;

[0024] A vertically arranged slide rail 3 is provided on both sides of the end cover, and a vertically arranged rack 2 and rack 3 are slidably connected to the slide rail 3. A gear 4 is provided between the rack 2 and rack 3, and the gear 4 is meshed with the rack 2 and rack 3 at the same time;

[0025] The second rack and the third rack are fixedly connected to the end cover and the base respectively;

[0026] A top block is fixedly mounted on the top surface of the housing, and the top block is arranged just below the third rotating shaft;

[0027] The upper end of the rotating shaft 3 is fixedly mounted with a clutch plate 1.

[0028] An annular mounting bracket is fixedly installed on the outer periphery of the filter box, and a connecting rod is provided on the mounting bracket along its radial direction. Both ends of the connecting rod are slidably connected to the mounting bracket, and a clutch plate 2 is fixedly installed in the middle of the connecting rod. The clutch plate 2 is arranged directly above the clutch plate 1 and can engage with the clutch plate 1; the connecting rod is installed with a camera for observing the inside of the filter.

[0029] Furthermore, the waste oil pipeline is arranged in a spiral shape, and the brush piece includes an air guide plate and a brush. In the initial state, the air guide plate is arranged at the air inlet of the filter box to guide the incoming air flow to flow along the same circumferential direction.

[0030] Furthermore, a waste collection box is provided below the base.

[0031] A scraper is arranged horizontally after sliding connection on the frame. The scraper is arranged on one side of the base, and the lower edge of the scraper is flush with the upper end surface of the base; a discharge channel is provided on the other side of the base, and the discharge channel extends into the waste collection box.

[0032] Furthermore, a horizontally arranged scraper plate 2 is slidably connected to the frame, and the scraper plate 2 is arranged on one side of the base, and the lower edge of the scraper plate 2 is flush with the upper end surface of the base.

[0033] Furthermore, a collection box or a discharge port for separated large particles is provided at the bottom of the cyclone separation cylinder.

[0034] Beneficial effects of the present invention:

[0035] 1. The device of the present invention can effectively take into account the waste oil treatment, and can use the waste heat of the tail gas to appropriately accelerate the evaporation of the waste oil, thereby reducing energy waste.

[0036] 2. The device of the present invention provides an openable and closable pickling barrel structure, which can be opened and closed according to the movement of the stand. When opened, it is convenient for maintenance personnel to clean and evaluate the working status inside the pickling barrel.

[0037] 3. The present invention provides a filter screen with a specific structure, in which the rotating shaft three has three working states. The initial state is stationary. In the first stage of the rising of the outer shell, the gear one is engaged with the gear two, and the rotating shaft three rotates; in the second stage of the rising of the outer shell, the connecting rod drives the brush plate to fit the outer wall of the filter screen. At this time, the rotation of the rotating shaft three performs brushing. At the same time, the rotating shaft three lifts the end cover, and the clutch plate one engages the clutch plate two. At this time, the rotation executes the rotation movement of the camera, and the single camera is mobile to observe / shoot the inside of the filter box. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described below with reference to the accompanying drawings.

[0039] Figure 1 It is a schematic diagram of the three-dimensional structure of the device of the present invention;

[0040] Figure 2 It is a structural schematic diagram of the rotating shaft three of the present invention;

[0041] Figure 3 is a cross-sectional view of the present invention;

[0042] Figure 4 Schematic diagram of the assembly relationship between the worm wheel and the worm of the present invention

[0043] Figure 5 Schematic diagram of the internal structure of the filter box of the present invention;

[0044] Figure 6 Schematic diagram of the pickling barrel shell Figure 1 ;

[0045] Figure 7 Schematic diagram of the pickling barrel shell Figure 2 .

[0046] The components marked in the figure are as follows:

[0047] 1. Frame; 2. Cyclone separator; 3. Three-way catalyst; 4. Filter cartridge; 5. Pickling cartridge; 6. Waste oil evaporation container; 7. Waste oil treatment box; 8. Waste collection box; 9. Waste oil pipeline; 10. Air inlet; 11. Rotating shaft 1; 12. Rotating shaft 2; 13. Rotating shaft 3; 14. Gear 1; 15. Gear 2; 16. Gear 3; 17. Rack 1; 18. Rack 2; 19. Rack 3; 20. Gear 4; 21. Clutch plate 1; 22. Clutch plate 2; 23. Connecting rod; 24. End cover; 25. Filter screen; 26. Connecting rod; 27. Brush; 28. Camera; 29. ​​Mounting bracket; 30. Screw; 31. Base; 32. Push plate; 33. Worm; 34. Worm gear; 35. Pulley 1; 36. Pulley 2; 37. Drive belt; 38. Slide rail 3.

[0048] 501, housing; 502, motor; 503, top block; 504, base; 505, spray arm; DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0050] like Figures 1 to 7 As shown, an automobile exhaust detection device includes:

[0051] Rack 1,

[0052] The cyclone separation cylinder 2 fixed on the frame 1 is partially conical, with an air outlet at the upper end and an air inlet 10 at the lower end;

[0053] A detection mechanism, connected to the air inlet 10;

[0054] A filter connected to the air outlet has a three-way catalyst 3 fixedly installed inside;

[0055] The filter box 4 is connected to the outlet of the filter and has multiple layers of filter screens 25 arranged inside;

[0056] The waste oil pipeline 9 is arranged on the outer wall of the cyclone separation cylinder 2;

[0057] The evaporation container 6 is connected to the end of the waste oil pipeline 9.

[0058] The above-mentioned device of the present application is used in automobile testing centers or large automobile repair sites, and is particularly suitable for conditions where large vehicles or multiple vehicles are tested simultaneously.

[0059] In some embodiments of the present application, a testing method using the above-mentioned automobile exhaust detection device is disclosed, comprising the following steps:

[0060] First, park the vehicle on the test bench and use it to move the vehicle to the test area. At this time, connect the exhaust outlet of the vehicle to the test mechanism.

[0061] The detection mechanism is equipped with a variety of sensors, which are configured according to the parameters to be detected. Commercially available sensors commonly used in the field can be used. The specific models or types are not described or limited in this application.

[0062] During the test, the vehicle under test is required to operate at high speeds, expelling a large amount of exhaust gas. The exhaust gas is then transported to the cyclone 2. To increase its initial velocity upon entry, an air pump can be connected in series to the air inlet 10. Within the cyclone, the incoming exhaust gas forms a swirling flow, achieving cyclonic separation. Larger particles experience greater centrifugal force, causing them to fall along the inner wall of the cyclone 2, achieving initial separation of large particles. This is particularly true for larger and older vehicles, as large particles are initially intercepted during cyclonic separation, effectively reducing the subsequent service life of the three-way catalyst 3.

[0063] In some maintenance sites, there is also a need for a large amount of waste oil treatment, such as engine oil for maintenance replacement, engine oil from a faulty engine, transmission oil, or coolant, etc. During the use of the device of this embodiment, the waste oil can be transported to the evaporation container 6 through the waste oil pipeline 9 to evaporate some harmful components.

[0064] It should be noted that, when the waste oil flows through the waste oil pipe 9, the outer wall of the waste oil pipe 9 is in direct contact with the cyclone separation drum 2, and the heat of the high-temperature exhaust gas can be used to heat the waste oil in the waste oil pipe 9, thereby increasing the initial temperature of the waste oil in the evaporator, thereby realizing the utilization of waste heat.

[0065] In some embodiments, the gas output from the cyclone separation drum 2 also needs to be filtered through a three-way catalyst 3 and a filter box 4, wherein the three-way catalyst 3 can be provided with a precious metal as a catalyst. The three-way catalyst 3 in this embodiment can also adopt a common commercially available catalyst, which will not be repeated or specifically limited in this application. Compared with the three-way catalyst 3 on the vehicle, the three-way catalyst 3 of this application is not restricted by the space of the vehicle, has a larger caliber and mention, and has better catalytic efficiency. The filter box 4 is physically intercepted and filtered by the filter 25, aiming to intercept finer particles, such as PM2.5 level particles, to further protect the working environment and air quality of the workshop.

[0066] In some embodiments, the device is further provided with a pickling cylinder 5, which is connected to the filter box 4 through a hose, and an air pump is connected in series to the hose to send the gas filtered in the filter box 4 into the pickling cylinder 5 for treatment.

[0067] For the treatment of vehicle exhaust gas with severe catalyst failure, it may not be possible to safely discharge it into the external environment after three-way filtration alone. Therefore, an acid wash operation can be performed before exhaust. Specifically, the acid wash cylinder 5 in the embodiment of the present application receives the gas exhausted by the filter box 4 and sprays acid mist or droplets inside through a nozzle to acid wash the gas passing through it.

[0068] In some embodiments, a waste oil treatment tank 7 is provided below the pickling drum 5 , and the drain outlet of the pickling drum 5 is connected to the waste oil treatment tank 7 .

[0069] In some embodiments, after the pickling barrel 5 of the present application is pickled, the liquid discharged from the pickling barrel can also be collected and used in waste oil treatment. Specifically, after the pickling is completed, a portion of the acid liquid in the pickling barrel 5 can be released into the waste oil treatment phase. It is understandable that in the pickling process, the acid liquid is often excessive. For waste oil treatment, the acid liquid discharged from the pickling process can be effectively reused to treat harmful components in the waste oil. Of course, when the acid liquid for pickling is insufficient, those skilled in the art should also supplement additional acid liquid, rather than using the acid liquid discharged from the pickling barrel 5 as the only source of acid liquid for waste oil pickling.

[0070] In some embodiments, a vertically arranged slide rail 1 is installed on one side of the frame 1, and a rack 17 is slidably connected to the slide rail 1. A horizontal push plate 32 is fixedly installed at the lower end of the rack 17. A platform for lifting the vehicle to be inspected is provided below the push plate 32; when the platform rises, it can lift the push plate 32;

[0071] The frame 1 is rotatably connected to a horizontal second rotating shaft 12 and a vertically arranged screw 30. A worm 33 is coaxially fixedly mounted on the second rotating shaft 12. A worm gear 34 is coaxially fixedly mounted on the screw 30. The worm gear 34 meshes with the worm 33. A gear 3 16 is coaxially fixedly mounted on the second rotating shaft 12. The gear 3 16 meshes with the rack 1 17.

[0072] The pickling cylinder 5 includes an outer shell 501, a base 504 and a rotating shaft 11; a vertically arranged motor 503502 is installed on the outside of the outer shell 501, and a pulley 35 is fixedly installed on the output shaft of the motor 503502. The rotating shaft 11 is vertically arranged inside the outer shell 501 and is rotatably connected to the outer shell 501; a spray arm 505 is fixedly installed on the outer wall of the rotating shaft 11; the screw 30 is threadedly connected to the base 504; a pulley 2 36 is coaxially fixedly installed on the lower end of the rotating shaft 11, and the pulley 1 35 and the pulley 2 36 are connected through a transmission belt 37.

[0073] Regarding the pickling barrel 5, this embodiment proposes a specific structure for the pickling barrel 5. Specifically, after inspection is completed, while the gantry is moving downward, the gantry drives the push plate 32 and its rack 17 upward. Rack 17 rotates gear 3 16, which in turn rotates shaft 2 12 and its worm 33. This in turn drives the worm gear 34, which in turn rotates the screw 30, which in turn drives the entire housing 501 of the pickling barrel 5 upward. The interior of the pickling barrel 5 can be opened to release the acid. Specifically, the housing 501 initially blocks the pipe connecting the base 504 to the waste oil treatment tank 7, which is then opened during upward movement. Furthermore, the upward movement of the housing 501 facilitates the removal of sediment deposited on the base 504 from prolonged pickling.

[0074] When the platform moves upward, it means that the vehicle is in place and is ready to start detecting and treating automobile exhaust. The above-mentioned drives all run in reverse, and the shell 501 is reset to reclose the pickling cylinder 5, ending the above-mentioned pickling waste cleaning.

[0075] In this embodiment, the drive of the motor 503502 can drive the rotating shaft 11 to rotate through the pulley 1 35 and the pulley 2 36, thereby realizing downward rotary spraying and achieving a better pickling effect.

[0076] In some embodiments, a gear 14 is fixedly mounted on the top of the rotating shaft 11, the filter box 4 is cylindrical, a cylindrical filter screen 25 is provided in the middle of the filter box 4, and the outlet of the filter box 4 is provided inside the area surrounded by the filter screen 25;

[0077] The filter box 4 is provided with a second slide rail arranged horizontally along the radial direction. The filter box 4 is movably connected to a third rotating shaft 13. The connection between the third rotating shaft 13 and the filter box 4 is maintained airtight by an elastic film. The lower end of the third rotating shaft 13 extends to the bottom of the filter box 4. The lower end of the third rotating shaft 13 is fixedly mounted with a second gear 15. The second gear 15 can mesh with the first gear 14.

[0078] A top block is fixedly mounted on the top surface of the housing 501, and the top block is arranged just below the third rotating shaft 13;

[0079] The slide rail 2 is provided with a connecting rod 26, one end of the connecting rod 26 slides and is hinged to the slide rail 1, and the other end of the connecting rod 26 is hinged to the upper end of the rotating shaft 3 13;

[0080] A brush 27 is fixedly mounted on the lower end of the connecting rod 26 for cleaning the outer wall of the filter screen 25 .

[0081] Based on the structure of the pickling drum 5 in the above embodiment, this application provides an optimized filter box 4 structure. Specifically, the filter box 4 of this embodiment is cylindrical, and the filter screen 25 therein can also be cylindrical and can be located at the center of the interior of the filter box 4. Furthermore, the filter screen 25 can be provided in multiple layers, i.e., nested layers. The output port of the filter box 4 can be located at a relatively central position, or in the area surrounded by the innermost filter screen 25.

[0082] In some preferred embodiments, the upper end of the filter 25 is covered with a cover plate, the slide rail 1 is set on the slide groove of the cover plate, and the rotating shaft 3 13 passes through the cover plate and is movably connected to the cover plate in an airtight manner.

[0083] As the housing 501 of the pickling drum 5 moves upward, gear 14 and gear 2 15 gradually approach each other until they engage. At the same time, the top block contacts and lifts the lower end of the rotating shaft 3 13. At this point, the housing 501 has not yet finished moving upward. As it continues to move upward, gear 14 and gear 2 15 remain in meshing and output torque from motors 503502 to the rotating shaft 3 13. The entire rotating shaft 3 13 moves upward under the support of the top block. As the rotating shaft 3 13 moves upward, the connecting rod 26 also moves, driving the brush 27 to adhere to the outer wall of the filter screen 25. Simultaneously, as the rotating shaft 3 13 and connecting rod 26 rotate, a rotary scrubbing operation is achieved, causing particles trapped on the filter screen 25 to fall off, preventing the filter screen 25 from clogging due to long-term operation.

[0084] In some embodiments, the top of the filter box 4 is provided with an end cover 24 for closing the filter box 4, and the bottom surface of the filter box 4 is a detachable base 31;

[0085] A vertically arranged slide rail 3 38 is provided on both sides of the end cover 24. A vertically arranged rack 2 18 and rack 3 19 are slidably connected to the slide rail 3 38. A gear 4 20 is provided between the rack 2 18 and rack 3 19. The gear 4 20 is meshed with both the rack 2 and rack 3 19.

[0086] The second rack 18 and the third rack 19 are fixedly connected to the end cover 24 and the base 31 respectively;

[0087] A top block is fixedly mounted on the top surface of the housing 501, and the top block is arranged just below the third rotating shaft 13;

[0088] The upper end of the rotating shaft 3 13 is fixedly mounted with a clutch plate 1 21.

[0089] An annular mounting bracket 29 is fixedly mounted on the outer periphery of the filter box 4, and a connecting rod 23 is provided on the mounting bracket 29 along its radial direction. Both ends of the connecting rod 23 are slidably connected to the mounting bracket 29, and a clutch plate 22 is fixedly mounted on the middle part of the connecting rod 23. The clutch plate 22 is arranged directly above the clutch plate 1 21 and can engage with the clutch plate 1 21; the connecting rod 23 is installed with a camera 28 for observing the inside of the filter 25.

[0090] It should be noted that relative airtightness needs to be maintained between the end cover 24 of the filter box 4 and the rotating shaft three 13, while not affecting the up and down movement and rotation of the rotating shaft three 13. Specifically, a through hole can be opened on the end cover 24, and a sleeve is provided in the through hole along the axial direction of the rotating shaft three 13. The sleeve and the rotating shaft three 13 can slide or rotate along the axial direction (of course, the up and down movement of the sleeve and the rotating shaft three 13 requires an extreme position, such as a stepped shaft structure, so as not to fall out of the end cover 24 or the filter box 4). In this way, the movement of the rotating shaft three 13 is realized, and the airtightness can be achieved by setting an elastic film to cover the connection between the sleeve / end cover 24 / rotating shaft three 13, and the deformation range of the elastic film can allow the axial sliding of the rotating shaft three 13.

[0091] In the aforementioned embodiment, while the top block drives the rotating shaft three 13 to move upward, in the embodiment, the upward movement of the rotating shaft three 13 can also drive the clutch plate one 21 to engage with the clutch plate two 22. In this way, the rotation of the rotating shaft three 13 not only drives the brush plate 27 to rotate, but also drives the clutch plate two 22 to rotate, and then drives the connecting rod 23 thereon to rotate, so that the camera 28 rotates around the filter 25 for observation.

[0092] Furthermore, the rotating shaft can be provided with a stepped shaft on the outer wall, so that when the rotating shaft 13 moves upward, the stepped shaft or other equivalent means on the rotating shaft 13 lifts the entire end cover 24 upward, thereby opening the top surface of the filter box 4. In this way, in conjunction with the above-mentioned rotating observation camera 28, the operator can evaluate the internal condition of the filter screen 25 by observing the image or video captured by the camera 28.

[0093] On the other hand, the up and down movement of the end cap 24 also drives the second rack 18 to slide up and down, which in turn drives the fourth gear 20, which in turn drives the third rack 19 to slide up and down. This, in turn, causes the base 31 to be opened. Particles from the filter 25 brushed off by the brush 27 (especially agglomerated particles that have long accumulated on the periphery of the filter 25) fall onto the base 31. After the base 31 moves downward, these particles can be more easily removed manually or by equipment.

[0094] It should also be noted that the above operation time issue is that it needs to be performed after the automobile exhaust test is completed, along with the upward movement of the shell 501 of the pickling cylinder 5. In other words, those skilled in the art should understand that the end cover 24 cannot be opened while the exhaust test is in progress.

[0095] In other embodiments, the clutch plate 1 21 may also be embedded in the film or the end cover 24 and connected thereto via a rotating seal to achieve direct contact between the clutch plate 1 21 and the clutch plate 2 22 without affecting the sealing performance.

[0096] In some embodiments, the waste oil pipe 9 is arranged in a spiral shape, and the brush piece 27 includes an air guide plate and a brush. In the initial state, the air guide plate is set at the air inlet of the filter box 4 to guide the incoming air flow to flow along the same circumferential direction.

[0097] Through the design of this embodiment, the brush 27 can be used as an air guide plate during the exhaust gas detection process, and also realizes the cyclonic separation gas flow form in the filter box 4, so that larger particles are settled on the periphery, thereby increasing the service life of the filter 25. On the other hand, when the brush 27 rotates with the rotating shaft 3 13 and the connecting rod 26, it is used as a cleaning tool.

[0098] In some embodiments, a waste collection box 8 is provided below the base 31.

[0099] A scraper 1 is horizontally arranged after sliding connection on the frame 1. The scraper 1 is arranged on one side of the base 31, and the lower edge of the scraper is flush with the upper end surface of the base 31; a discharge channel is provided on the other side of the base 31, and the discharge channel extends into the waste collection box 8.

[0100] In some embodiments, the frame 1 is slidably connected to a horizontally arranged scraper 2, which is arranged on one side of the base 504, and the lower edge of the scraper 2 is flush with the upper end surface of the base 504.

[0101] In some embodiments, a collection box or a discharge port for separated large particles is provided at the bottom of the cyclone separation drum 2 .

[0102] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0103] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A vehicle exhaust detection device, characterized in that: include: frame, A cyclone separation cylinder fixed to the frame is partially conical, with an air outlet at the upper end and an air inlet at the lower end; a detection mechanism, connected to the air inlet; A filter connected to the air outlet has a three-way catalyst fixedly installed inside; A filter box, connected to the outlet of the filter, and provided with multiple layers of filter screens; A waste oil pipeline is provided on the outer wall of the cyclone separation cylinder; and, an evaporation container, connected to the end of the waste oil pipeline; It also includes a pickling cylinder connected to the filter box through a hose, and an air pump is connected in series to the hose to send the gas filtered in the filter box into the pickling cylinder for treatment; A vertically arranged slide rail is installed on one side of the frame, a rack is slidably connected to the slide rail, a horizontal push plate is fixedly installed at the lower end of the rack, and a stand for lifting the vehicle to be inspected is provided below the push plate; when the stand rises, it can lift the push plate; A horizontal rotating shaft 2 and a vertically arranged screw are rotatably connected on the frame, a worm is coaxially fixedly mounted on the rotating shaft 2; a worm wheel is coaxially fixedly mounted on the screw; the worm wheel meshes with the worm; a gear 3 is coaxially fixedly mounted on the rotating shaft 2, and the gear 3 meshes with the rack 1; The pickling cylinder includes a shell, a base and a rotating shaft; a vertically arranged motor is mounted on the outside of the shell, a pulley is fixedly mounted on the output shaft of the motor, and the rotating shaft is vertically arranged inside the shell and is rotatably connected to the shell; a spray arm is fixedly mounted on the outer wall of the rotating shaft; the screw is threadedly connected to the base; a pulley is coaxially fixedly mounted on the lower end of the rotating shaft, and the pulleys are connected to each other via a transmission belt. A gear 1 is fixedly mounted on the top of the rotating shaft 1, the filter box is cylindrical, a cylindrical filter screen is provided in the middle of the filter box, and the outlet of the filter box is provided inside the area surrounded by the filter screen; The filter box is provided with a second slide rail arranged horizontally along a radial direction. The filter box is movably connected to a third rotating shaft. The connection between the third rotating shaft and the filter box is maintained airtight by an elastic film. The lower end of the third rotating shaft extends to the bottom of the filter box. The lower end of the third rotating shaft is fixedly mounted with a second gear, which can mesh with the first gear. A top block is fixedly mounted on the top surface of the housing, and the top block is arranged directly below the rotating shaft three; A connecting rod is provided on the second slide rail, one end of the connecting rod slides and is hinged to the second slide rail, and the other end of the connecting rod is hinged to the upper end of the third rotating shaft; A brush is fixedly mounted on the lower end of the connecting rod for cleaning the outer wall of the filter screen.

2. The vehicle exhaust gas detection device according to claim 1, characterized in that: A waste oil treatment tank is provided below the pickling barrel, and the drain outlet of the pickling barrel is connected to the waste oil treatment tank.

3. The vehicle exhaust gas detection device according to claim 1, characterized in that: The top of the filter box is provided with an end cover for closing it, and the bottom surface of the filter box is a detachable base; A vertically arranged slide rail 3 is provided on both sides of the end cover, and a vertically arranged rack 2 and rack 3 are slidably connected to the slide rail 3. A gear 4 is provided between the rack 2 and rack 3, and the gear 4 is meshed with the rack 2 and rack 3 at the same time; The second rack and the third rack are fixedly connected to the end cover and the base respectively; The upper end of the rotating shaft 3 is fixedly mounted with a clutch plate 1. An annular mounting bracket is fixedly installed on the outer periphery of the filter box, and a connecting rod is provided on the mounting bracket along its radial direction. Both ends of the connecting rod are slidably connected to the mounting bracket, and a clutch plate 2 is fixedly installed in the middle of the connecting rod. The clutch plate 2 is arranged directly above the clutch plate 1 and can engage with the clutch plate 1; the connecting rod is installed with a camera for observing the inside of the filter.

4. The vehicle exhaust gas detection device according to claim 1, characterized in that: The waste oil pipeline is arranged in a spiral shape, and the brush piece includes an air guide plate and a brush. In an initial state, the air guide plate is arranged at the air inlet of the filter box to guide the incoming air flow to flow along the same circumferential direction.

5. The vehicle exhaust gas detection device according to claim 3, characterized in that: A waste collection box is provided below the base. A horizontally arranged scraper is slidably connected to the frame, and the scraper is arranged on one side of the base. The lower edge of the scraper is flush with the upper end surface of the base; a discharge channel is provided on the other side of the base, and the discharge channel extends into the waste collection box.

6. The vehicle exhaust gas detection device according to claim 2, characterized in that: A horizontally arranged scraper plate 2 is slidably connected to the frame. The scraper plate 2 is arranged on one side of the base. The lower edge of the scraper plate 2 is flush with the upper end surface of the base.

7. The vehicle exhaust gas detection device according to claim 1, characterized in that: A collection box or discharge port for separated large particles is provided at the bottom of the cyclone separation cylinder.

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