A detection device for automobile exhaust

Abstract

The application relates to the technical field of automobile exhaust detection, and discloses a detection equipment for automobile exhaust, the detection box is provided with damping supports fixedly connected at the positions of four corners of the bottom, the bottom of each damping support is fixedly connected with a fixed bottom plate, the surface of the fixed bottom plate is fixedly connected with auxiliary damping gas collection assemblies at the positions of both sides and the top, one side of the inside of the detection box is fixedly connected with a detection filter screen, and a filter membrane is arranged in the inside of the detection box and fixedly connected with the detection filter screen; the damping supports, the fixed bottom plate and the auxiliary damping gas collection assemblies are arranged, so that when the detection box is transported and bounces, the downward force generated by the bouncing is absorbed and reduced through the damping supports and the auxiliary damping gas collection assemblies; when the detection box is lifted through the rebound of the damping springs sleeved on the surfaces of the damping supports, the rebound force of the auxiliary damping gas collection assemblies is limited again to avoid the vibration caused by the rebound force, so that the detection box and the internal optical assembly, such as a laser spectrometer lens, are prevented from being deviated or the circuit from being in poor contact due to the vibration, and the stability of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile exhaust detection, more particularly to a detection device for automobile exhaust. BACKGROUND

[0002] The automobile exhaust detection device is a professional instrument for measuring motor vehicle emissions pollutants (such as carbon monoxide CO, hydrocarbons HC, nitrogen oxides NOx, particulate matter PM, etc.), widely used in environmental protection monitoring stations, vehicle annual inspection agencies and repair factories, its core function is to analyze the composition of exhaust gas in real time through infrared, electrochemical or ultraviolet spectroscopy technology, to ensure that the vehicle meets the national or regional emission standards, modern devices usually have high-precision sensors, automatic data storage and networking functions, some support OBD (on-board diagnostic system) rapid detection, helping to reduce air pollution and improve supervision efficiency;

[0003] However, although the automobile exhaust detection device plays an important role in environmental supervision, there are still some limitations, especially the equipment carried in the road detection is easy to be affected by the bump, which leads to the shift of optical components (such as laser spectrometer lens) or poor circuit contact, in addition, the sampling port of the equipment is easy to suck in dust in the outdoor environment, which blocks the filter membrane or covers the sensor surface, and needs to be cleaned frequently by hand, which seriously affects its detection efficiency. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the present application provides a detection device for automobile exhaust to solve the problems existing in the above background art.

[0005] The application provides the following technical scheme: a detection equipment for automobile exhaust, comprising a detection box, vibration reduction supports are fixedly connected to the bottom corners of the detection box, a fixed bottom plate is fixedly connected to the bottom of the vibration reduction support, auxiliary vibration reduction gas collecting assemblies are fixedly connected to the top of the fixed bottom plate on both sides, a detection filter screen is fixedly connected to one side of the inside of the detection box, a filter membrane is arranged in the inside of the detection box fixedly connected with the detection filter screen, cleaning covers are arranged around the surface of the filter membrane in the inside of the detection box, air pressure storage tanks are fixedly connected to the surface of the detection box on both sides, one-way exhaust pipes are fixedly connected to one side of the surface of the air pressure storage tank, the one-way exhaust pipe is fixedly connected to one side of the surface of the cleaning cover penetrating through the inside of the detection box away from the air pressure storage tank, a sampling port is arranged in the inside of the detection box fixedly connected with the detection filter screen, and fixed connecting heads are fixedly connected to the top of the auxiliary vibration reduction gas collecting assembly on both sides of the surface of the detection box, the auxiliary vibration reduction gas collecting assembly, the cleaning filter core, the inflation plug rod assembly, the air pressure storage tank and the cleaning cover are arranged, which is favorable for driving the inflation plug rod assembly to ascend and descend in the auxiliary vibration reduction gas collecting assembly when the detection box vibrates, so that the auxiliary vibration reduction gas collecting assembly sends the cleaning gas in the auxiliary vibration reduction gas collecting assembly into the air pressure storage tank for storage, and the filter membrane surface needs to be cleaned, air is discharged through the cleaning cover, dust particles on the surface of the filter membrane are blown off by the reverse air pressure to complete cleaning, the steps of manual operation are reduced, and the working efficiency in actual use is improved.

[0006] Further, one-way air inlets are arranged on both sides of the surface of the air pressure storage tank close to the bottom, a pressure gauge is arranged on the top of the air pressure storage tank, a pressure relief valve is arranged on one side of the top of the air pressure storage tank close to the pressure gauge, and an exhaust valve is arranged on one side of the one-way exhaust pipe close to the air pressure storage tank, the pressure relief valve is favorable for discharging when the pressure in the air pressure storage tank is high, and the pressure in the air pressure storage tank does not affect the vibration reduction effect of the detection box.

[0007] Further, a sealing plug is movably sleeved in the inside of the pressure relief valve, a resistance spring is fixedly connected to the top of the sealing plug, the other end of the resistance spring is fixedly connected to the top end of the inside of the pressure relief valve, and a pressure relief hole is arranged on one side of the surface of the pressure relief valve close to the top, the sealing plug, the resistance spring and the pressure relief hole are favorable for lifting the sealing plug by air pressure and compressing the resistance spring when the pressure in the air pressure storage tank exceeds a threshold value, so that the air pressure in the air pressure storage tank is discharged through the pressure relief hole to complete pressure relief.

[0008] Further, the inside of the cleaning cover is provided with a cleaning cavity, the position of the fixed connection of the one-way exhaust pipe of the cleaning cover is provided with an air inlet hole, and the periphery of the inner wall of the cleaning cover is provided with regularly arranged cleaning nozzles. Through the cleaning cover, it is beneficial to reverse impact the filter membrane when cleaning the filter membrane, so that the dust attached to the surface of the filter membrane is cleaned, and the manual cleaning operation steps are reduced.

[0009] Further, the cleaning nozzle comprises a spray head body, a blocking plate is fixedly connected to one side of the inside of the spray head body, and a one-way exhaust valve core is movably sleeved on the top of the blocking plate. Through the cleaning nozzle, it is beneficial to reverse impact the filter membrane when cleaning the filter membrane, so that the dust attached to the surface of the filter membrane is cleaned, and the manual cleaning operation steps are reduced.

[0010] Further, the fixed bottom plate is fixedly connected with a support plate, and the inside of the support plate is fixedly sleeved with a cleaning net. The damping support comprises a damping cavity pipe, a damping piston rod is movably sleeved in the inside of the damping cavity pipe, and a damping spring is movably sleeved on the surface of the damping cavity pipe. Through the support plate and the cleaning net, the position of the auxiliary damping gas collecting assembly is supported, and the air entering the auxiliary damping gas collecting assembly is filtered and cleaned through the cleaning net and the cleaning filter element.

[0011] Further, the auxiliary damping gas collecting assembly is movably sleeved with an air charging plug rod assembly near the top inside, and the surface of one side of the auxiliary damping gas collecting assembly close to the air pressure storage tank is fixedly connected with a one-way air guide pipe. The surface of one side of the auxiliary damping gas collecting assembly away from the one-way air guide pipe is fixedly connected with a one-way air inlet elbow, and the bottom of the auxiliary damping gas collecting assembly is fixedly connected with a cleaning filter element. The end of the one-way air inlet elbow away from the auxiliary damping gas collecting assembly is fixedly connected to the surface of the cleaning filter element close to the top. Through the cleaning filter element and the one-way air inlet elbow, the cleaned and filtered air is sent into the auxiliary damping gas collecting assembly through the one-way air inlet elbow, which is convenient for subsequent collection and use of the cleaned air.

[0012] Further, the inflatable plug rod assembly comprises a fixed push rod, a handle is fixedly connected to the top of the fixed push rod, a piston inflation rod is fixedly connected to the bottom of the fixed push rod, a threaded groove is formed in the surface of the piston inflation rod close to the top, a limiting nut is movably sleeved on the surface of the threaded groove, a sealing rubber plug is fixedly connected to the inner end of the piston inflation rod in the auxiliary damping gas collecting assembly, a circular through hole is formed in the top of the auxiliary damping gas collecting assembly, a one-way valve core is arranged in the inner position of the one-way air inlet elbow pipe and the one-way air guide pipe, the one-way valve core comprises a one-way blocking block, and a rotating air guide piece is movably connected to one side of the one-way blocking block. Through the inflatable plug rod assembly, the vibration force is absorbed and reduced when the detection box is transported, and the external air is adsorbed and filtered into the auxiliary damping gas collecting assembly for collection, and the one-way valve core in the one-way air inlet elbow pipe and the one-way air guide pipe avoids air backflow to affect subsequent cleaning use.

[0013] Further, the position where the cleaning filter core is fixedly connected with the one-way air inlet elbow pipe is provided with a cleaning air outlet, an activated carbon core is fixedly sleeved in the inner position of the cleaning filter core, a non-powered fan is fixedly connected to the bottom position of the activated carbon core, and a cleaning brush rod is arranged on the side of the non-powered fan away from the activated carbon core. Through the cleaning brush rod on the side of the non-powered fan, the cleaning brush rod is rotated when the non-powered fan inhales air, so that the surface of the cleaning net is cleaned, and the air inlet is prevented from being blocked by dust.

[0014] The technical effects and advantages of the present application are as follows:

[0015] The present application is provided with a damping support, a fixed bottom plate and an auxiliary damping gas collecting assembly, which is beneficial to absorb and reduce the downward force generated by the bumping when the detection box is transported and bumps, and when the detection box is lifted by the rebound of the damping piston rod sleeved on the surface of the damping support, the auxiliary damping gas collecting assembly limits the rebound force to avoid vibration, so that the detection box and the internal optical components such as laser spectrometer lenses are prevented from being deviated or the circuit contact being poor due to vibration, thereby improving the stability of the equipment.

[0016] The present application is provided with an auxiliary damping gas collecting assembly, a cleaning filter core, an inflatable plug rod assembly, a gas pressure storage tank and a cleaning cover, which is beneficial to lift and lower the inflatable plug rod assembly in the auxiliary damping gas collecting assembly when the detection box vibrates, so that the auxiliary damping gas collecting assembly sends the cleaning gas in the auxiliary damping gas collecting assembly into the gas pressure storage tank for storage, and when the filter membrane surface needs to be cleaned, the cleaning cover is used to exhaust air, so that the dust particles on the filter membrane surface are blown off by the reverse air pressure to complete the cleaning, thereby reducing the manual operation steps and improving the actual use efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The overall structure of the present application is shown in the sectional view.

[0018] Figure 2 The overall structure of the present application is shown in the sectional view.

[0019] Figure 3 The detection box structure of the present application is shown in the sectional view.

[0020] Figure 4 The air pressure storage tank structure of the present application is shown in the sectional view.

[0021] Figure 5 The pressure relief valve structure of the present application is shown in the sectional view.

[0022] Figure 6 The cleaning cover structure of the present application is shown in the sectional view.

[0023] Figure 7 The cleaning nozzle structure of the present application is shown in the sectional view.

[0024] Figure 8 The fixed bottom plate structure of the present application is shown in the sectional view.

[0025] Figure 9 The vibration reduction cavity tube structure of the present application is shown in the sectional view.

[0026] Figure 10 The auxiliary vibration reduction gas collection assembly structure of the present application is shown in the sectional view.

[0027] Figure 11 The inflation plug rod assembly structure of the present application is shown in the sectional view.

[0028] Figure 12 The auxiliary vibration reduction gas collection assembly structure of the present application is shown in the sectional view.

[0029] Figure 13 The cleaning filter element structure of the present application is shown in the sectional view.

[0030] Figure 14 The unpowered fan structure of the present application is shown in the sectional view.

[0031] Figure 15 The one-way valve core structure of the present application is shown in the sectional view.

[0032] The figure marks are: 1, detection box; 101, sampling port; 102, fixed connecting head; 2, damping support; 201, damping cavity pipe; 202, damping piston rod; 203, damping spring; 3, fixed bottom plate; 301, support plate; 302, cleaning net; 4, auxiliary damping gas collecting assembly; 401, circular through hole; 5, detection filter screen; 6, filter membrane; 7, cleaning cover; 701, cleaning inner cavity; 702, air inlet hole; 703, cleaning nozzle; 7031, nozzle body; 7032, blocking plate; 7033, one-way exhaust valve core; 8, gas pressure storage tank; 801, one-way air inlet; 802, pressure gauge; 803, pressure relief valve; 8031, sealing plug; 8032, resistance spring; 8033, pressure relief hole; 9, one-way exhaust pipe; 901, exhaust valve; 10, one-way air inlet elbow; 11, one-way air guide pipeline; 12, cleaning filter element; 1201, cleaning exhaust port; 1203, activated carbon core; 1204, unpowered fan; 1205, cleaning brush rod; 13, inflation plug rod assembly; 1301, fixed push rod; 1302, handle; 1303, piston inflation rod; 1304, sealing rubber plug; 1305, threaded groove; 1306, limiting nut; 14, one-way valve core; 1401, one-way blocking piece; 1402, rotating air guide piece. DETAILED DESCRIPTION

[0033] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application, and in addition, the forms of each structure described in the following embodiments are only examples, and the detection equipment for automobile exhaust involved in the present application is not limited to each structure described in the following embodiments. All other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0034] Referring to Figures 1-15 As shown in the figure, the present application provides a detection equipment for automobile exhaust, which comprises a detection box 1, damping supports 2 are fixedly connected at the bottom four corner positions of the detection box 1, a fixed bottom plate 3 is fixedly connected at the bottom position of the damping supports 2, auxiliary damping gas collecting assemblies 4 are fixedly connected at the top of both sides of the surface of the fixed bottom plate 3, a detection filter screen 5 is fixedly connected at one side inside the detection box 1, a filter membrane 6 is arranged at the inside position of the detection box 1 where the detection filter screen 5 is fixedly connected, a cleaning cover 7 is arranged at the surface of the detection box 1 at the four positions around the surface of the filter membrane 6, a gas pressure storage tank 8 is fixedly connected at both sides of the surface of the detection box 1, a one-way exhaust pipe 9 is fixedly connected at one side of the surface of the gas pressure storage tank 8, the one-way exhaust pipe 9 is fixedly connected at one side of the surface of the cleaning cover 7 through the inside of the detection box 1 away from the gas pressure storage tank 8, a sampling port 101 is arranged at the inside position of the detection box 1 where the detection filter screen 5 is fixedly connected, and fixed connecting heads 102 are fixedly connected at the top positions of the auxiliary damping gas collecting assemblies 4 at both sides of the surface of the detection box 1.

[0035] In this embodiment: through the damping support 2, the fixed bottom plate 3, the auxiliary damping gas collecting assembly 4, it is favorable for the detection box 1 to be transported and to produce the jolt, the downward force generated by the jolt is absorbed and reduced through the damping support 2 and the auxiliary damping gas collecting assembly 4, and when the detection box 1 is lifted by the rebound of the damping piston rod 202 on the surface of the damping support 2, the auxiliary damping gas collecting assembly 4 is used to limit the rebound force again to avoid vibration, so that the detection box 1 and the internal optical components such as laser spectrometer lenses are not offset or the circuit contact is not poor due to vibration, thereby improving the stability of the equipment.

[0036] Wherein, the surface of the gas pressure storage tank 8 is provided with a one-way air inlet 801 on both sides near the bottom, a pressure gauge 802 is arranged on the top of the gas pressure storage tank 8, a pressure relief valve 803 is arranged on one side of the top of the gas pressure storage tank 8, and an exhaust valve 901 is arranged on one side of the one-way exhaust pipe 9 near the gas pressure storage tank 8.

[0037] In this embodiment: through the pressure relief valve 803, it is favorable to discharge through the pressure relief valve 803 when the internal pressure of the gas pressure storage tank 8 is high, so as to avoid the influence of the internal pressure of the gas pressure storage tank 8 on the damping effect of the detection box 1.

[0038] Wherein, the inside of the pressure relief valve 803 is movably sleeved with a sealing plug 8031, the top of the sealing plug 8031 is fixedly connected with a resistance spring 8032, the other end of the resistance spring 8032 is fixedly connected to the top end inside the pressure relief valve 803, and a pressure relief hole 8033 is arranged on one side of the surface of the pressure relief valve 803 near the top.

[0039] In this embodiment: through the sealing plug 8031, the resistance spring 8032 and the pressure relief hole 8033, when the internal pressure of the gas pressure storage tank 8 exceeds the threshold value, the gas pressure lifts the sealing plug 8031 and compresses the resistance spring 8032, so that the gas pressure inside the gas pressure storage tank 8 is discharged through the pressure relief hole 8033 to complete the pressure relief.

[0040] Wherein, the inside of the cleaning cover 7 is provided with a cleaning inner cavity 701, the position of the cleaning cover 7 fixedly connected with the one-way exhaust pipe 9 is provided with an air inlet hole 702, and the inner wall of the cleaning cover 7 is provided with a plurality of cleaning nozzles 703 arranged in an orderly manner.

[0041] In this embodiment: through the cleaning cover 7, when the filter membrane 6 needs to be cleaned, the cleaning gas discharged through the cleaning cover 7 impacts the filter membrane 6 in the opposite direction, so that the dust attached to the surface of the filter membrane 6 is cleaned, reducing the operation steps of manual cleaning.

[0042] The cleaning nozzle 703 comprises a spray head body 7031, a blocking plate 7032 is fixedly connected to the inside of the spray head body 7031, and a one-way exhaust valve core 7033 is movably sleeved at the top of the blocking plate 7032.

[0043] In the embodiment, the cleaning nozzle 703 is used to clean the filter membrane 6. When the filter membrane 6 needs to be cleaned, the cleaning gas discharged through the cleaning cover 7 is used to impact the filter membrane 6 in the reverse direction, so that the dust attached to the surface of the filter membrane 6 is cleaned, and the manual cleaning operation step is reduced.

[0044] The fixed bottom plate 3 is fixedly connected with the auxiliary damping air collection assembly 4, and the positions of the auxiliary damping air collection assembly 4 are fixedly connected with support plates 301. The inside of the support plate 301 is fixedly sleeved with a cleaning net 302. The damping support 2 comprises a damping cavity pipe 201, and the inside of the damping cavity pipe 201 is movably sleeved with a damping piston rod 202. The surface of the damping cavity pipe 201 is movably sleeved with a damping spring 203.

[0045] In the embodiment, the support plate 301 and the cleaning net 302 are used to support the auxiliary damping air collection assembly 4, and the air entering the auxiliary damping air collection assembly 4 is filtered and cleaned through the cleaning net 302 and the cleaning filter element 12.

[0046] The inside of the auxiliary damping air collection assembly 4 is movably sleeved with an air charging plug rod assembly 13 near the top. The surface of the auxiliary damping air collection assembly 4 is fixedly connected with a one-way air guide pipe 11 near the gas pressure storage tank 8. The surface of the auxiliary damping air collection assembly 4 is fixedly connected with a one-way air inlet elbow 10 away from the one-way air guide pipe 11. The bottom of the auxiliary damping air collection assembly 4 is fixedly connected with a cleaning filter element 12. The one-way air inlet elbow 10 is fixedly connected to the surface of the cleaning filter element 12 near the top away from the auxiliary damping air collection assembly 4.

[0047] In the embodiment, the cleaning filter element 12 and the one-way air inlet elbow 10 are used to send the cleaned and filtered air into the auxiliary damping air collection assembly 4 through the one-way air inlet elbow 10, so as to facilitate the collection and use of the cleaned air.

[0048] Wherein, the inflatable plug rod assembly 13 includes fixed push rod 1301, fixed push rod 1301 top position fixedly connected with handle 1302, fixed push rod 1301 bottom both sides position is fixedly connected with piston inflation rod 1303, piston inflation rod 1303 surface near the top position is provided with threaded groove 1305, threaded groove 1305 surface position is movably sleeved with limiting nut 1306, piston inflation rod 1303 is located in the inside one end of auxiliary damping gas collection assembly 4 is fixedly connected with sealing rubber plug 1304, auxiliary damping gas collection assembly 4 top position is provided with circular through hole 401, one-way inlet bend pipe 10 and one-way air duct 11 inside position are provided with one-way valve core 14, one-way valve core 14 includes one-way sealing block 1401, one-way sealing block 1401 one side position movably connected with rotating air guide piece 1402;

[0049] In the embodiment: through inflatable plug rod assembly 13, it is favorable to drive inflatable plug rod assembly 13 to move up and down when detecting box 1 is transported to generate vibration, so that the vibration force is absorbed and reduced, and at the same time, external air is adsorbed and filtered into auxiliary damping gas collection assembly 4 inside to collect, and through one-way valve core 14 in one-way inlet bend pipe 10 and one-way air duct 11, air backflow is avoided to affect subsequent cleaning use.

[0050] Wherein, the position of the cleaning filter element 12 fixedly connected with the one-way inlet bend pipe 10 is provided with a cleaning air outlet 1201, the cleaning filter element 12 is fixedly sleeved with an activated carbon core 1203 inside the position, the activated carbon core 1203 is fixedly connected with a non-powered fan 1204 at the bottom position, and the non-powered fan 1204 is provided with a cleaning brush rod 1205 at the position away from the activated carbon core 1203 side;

[0051] In the embodiment: through the cleaning brush rod 1205 at one side of the non-powered fan 1204, it is favorable to drive the cleaning brush rod 1205 to rotate when the non-powered fan 1204 inhales, so that the surface of the cleaning net 301 is cleaned, and the air inlet is prevented from being blocked by dust.

[0052] The working principle of the application is as follows:

[0053] First, when the detection box 1 is transported and vibrates, at this time, the detection box 1 will be pressed downward by the vibration, and the damping piston rod 202 and the damping spring 203 will be pressed, so that the damping piston rod 202 is pressed into the damping cavity tube 201, and the fixed connecting head 102 on the surface of the detection box 1 drives the piston inflation rod 1303 and the sealing rubber plug 1304 limited by the limiting nut 1306 into the internal position of the auxiliary damping gas collection assembly 4, so that the air in the auxiliary damping gas collection assembly 4 is pressed into the air pressure storage tank 8 through the one-way valve core 14 in the one-way air guide pipeline 11, at this time, the one-way valve core 14 in the one-way air inlet elbow pipe 10 closes the one-way air inlet elbow pipe 10, and then the detection box 1 is limited by the gas flow speed again. The force of the downward vibration, then when the damping spring 203 rebounds to push the damping piston rod 202 and the detection box 1 to rise, at this time, the detection box 1 drives the inflation plug rod assembly 13 to rise in the auxiliary damping gas collection assembly 4, then the one-way valve core 14 in the one-way air guide pipeline 11 blocks the one-way air guide pipeline 11, at this time, the one-way air inlet elbow pipe 10 drives the air in the cleaning filter element 12 to be sucked into the auxiliary damping gas collection assembly 4, and the external air is filtered by the support plate 301 in the fixed bottom plate 3, so that the filtered air enters the cleaning filter element 12 and drives the non-powered fan 1204 to rotate, so that the non-powered fan 1204 drives the cleaning brush rod 1205 to clean the surface of the support plate 301, then the preliminarily filtered air is filtered by the activated carbon core 1203 and sent into the one-way air inlet elbow pipe 10, so that the air in the auxiliary damping gas collection assembly 4 is relatively clean, then the air entering rate of the auxiliary damping gas collection assembly 4 further limits the rebound force of the damping spring 203, so as to avoid the vibration of the detection box 1 being absorbed and reduced, so as to avoid the optical components such as laser spectrometer lenses being deviated or the circuit being in poor contact;

[0054] Then the clean air in the auxiliary damping and gas collecting assembly 4 is sent into the air pressure storage tank 8 through the one-way air guide pipeline 11 in the jolt vibration, and the pressure value in the air pressure storage tank 8 can be observed in real time through the pressure gauge 802 when the clean air is stored in the air pressure storage tank 8, then when the pressure value in the air pressure storage tank 8 exceeds the threshold value, the pressure in the air pressure storage tank 8 pushes up the sealing plug 8031 and extrudes the resistance spring 8032, so that the sealing plug 8031 reaches the top position of the pressure relief hole 8033 to relieve pressure, then when the pressure value returns to normal, the resistance spring 8032 pushes the sealing plug 8031 to reset and stop pressure relief, then when the detection tank 1 needs to be cleaned by frequently detecting automobile exhaust, the exhaust valve 901 at the top of the one-way exhaust pipe 9 is rotated, so that the clean air in the air pressure storage tank 8 reaches the air inlet hole 702 position through the one-way exhaust pipe 9, so that the air in the cleaning cavity 701 is pressurized, then the one-way exhaust valve core 7033 in the cleaning nozzle 703 is blown to rotate to one side, so that the clean air enters the sampling port 101 and blows to the filter membrane 6 position, thereby blowing off the dust on the surface of the filter membrane 6 to complete the cleaning operation.

[0055] Then when the air pressure storage tank 8 needs to be cleaned and the pressure inside is insufficient, the rotary limiting nut 1306 is rotated, so that the piston inflation rod 1303 is limited to be removed from the fixed connecting head 102, then the fixed push rod 1301 is pulled up and down by holding the handle 1302, so that the fixed push rod 1301 drives the piston inflation rod 1303 and the sealing rubber plug 1304 to stretch up and down in the auxiliary damping and gas collecting assembly 4, thereby manually inflating the air pressure storage tank 8, which is convenient for subsequent cleaning operation.

[0056] Finally, it should be pointed out that in the description of the present application, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0057] Secondly: the present application discloses the structure related to the embodiment of the present application, and other structures can refer to the usual design, and the same embodiment and different embodiments of the present application can be combined with each other under the condition of no conflict;

[0058] Finally: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for detecting exhaust gases of a vehicle, comprising a detection box (1), characterized in that: The detection box (1) bottom four corner positions are fixedly connected with damping supports (2), the damping supports (2) bottom positions are fixedly connected with fixed bottom plates (3), the fixed bottom plates (3) surfaces two sides top are all fixedly connected with auxiliary damping gas collecting assemblies (4), the detection box (1) inside one side position is fixedly connected with detection filter screens (5), the detection box (1) inside the inside position of fixedly connected detection filter screen (5) is provided with filter membrane (6), the detection box (1) inside the surface four around positions of filter membrane (6) are provided with cleaning covers (7), the detection box (1) surface two sides positions are all fixedly connected with air pressure storage boxes (8), the air pressure storage boxes (8) surface one side positions are fixedly connected with one-way exhaust pipes (9), the one-way exhaust pipes (9) far from air pressure storage boxes (8) one end pass through the inside of detection box (1) and are fixedly connected at cleaning cover (7) surface one side position, the detection box (1) fixedly connected detection filter screen (5) inside position is provided with sampling port (101), the detection box (1) surface two sides are all fixedly connected with fixed connecting heads (102) at auxiliary damping gas collecting assembly (4) top positions; The auxiliary damping gas collecting assembly (4) is movably sleeved with the inflation plug rod assembly (13) near the top position in the inside, the auxiliary damping gas collecting assembly (4) is fixedly connected with the one-way air guide pipeline (11) on the surface of one side near the air pressure storage box (8), the auxiliary damping gas collecting assembly (4) is fixedly connected with the one-way air inlet elbow (10) on the surface of one side away from the one-way air guide pipeline (11), the auxiliary damping gas collecting assembly (4) is fixedly connected with the cleaning filter element (12) at the bottom position, the one-way air inlet elbow (10) is fixedly connected on the surface of cleaning filter element (12) near the top position at one end away from the auxiliary damping gas collecting assembly (4); The inflation plug rod assembly (13) includes a fixed push rod (1301), the fixed push rod (1301) top position is fixedly connected with a handle (1302), the fixed push rod (1301) bottom two sides positions are all fixedly connected with piston inflation rods (1303), the piston inflation rods (1303) surface near the top position are all provided with threaded grooves (1305), the threaded grooves (1305) surface positions are all movably sleeved with limit nuts (1306), the piston inflation rods (1303) are all fixedly connected with sealing rubber plugs (1304) at one end in the auxiliary damping gas collecting assembly (4), the auxiliary damping gas collecting assembly (4) top position is provided with a circular through hole (401), the one-way air inlet elbow (10) and the one-way air guide pipeline (11) are all provided with one-way valve cores (14) at the inside position, the one-way valve core (14) includes a one-way blocking block (1401), the one-way blocking block (1401) one side position is movably connected with a rotating air guide piece (1402).

2. The device for detecting exhaust gas of an automobile according to claim 1, characterized in that: The air pressure storage tank (8) is provided with a one-way air inlet (801) on both sides of the surface near the bottom, a pressure gauge (802) is arranged on the top of the air pressure storage tank (8), a pressure relief valve (803) is arranged on one side of the top of the air pressure storage tank (8) near the pressure gauge (802), and an exhaust valve (901) is arranged on one side of the one-way exhaust pipe (9) near the air pressure storage tank (8).

3. The device for detecting exhaust gas of an automobile according to claim 2, characterized in that: The pressure relief valve (803) is movably sleeved with a sealing plug (8031) at the inner position, the sealing plug (8031) is fixedly connected with a resistance spring (8032) at the top position, the other end of the resistance spring (8032) is fixedly connected to the inner top position of the pressure relief valve (803), and a pressure relief hole (8033) is arranged on one side of the surface of the pressure relief valve (803) near the top.

4. The device for detecting exhaust gas of an automobile according to claim 1, characterized in that: The cleaning cover (7) is provided with a cleaning inner cavity (701) at the inner position, an air inlet hole (702) is arranged at the position where the cleaning cover (7) is fixedly connected with the one-way exhaust pipe (9), and a plurality of cleaning nozzles (703) are arranged at the positions around the inner wall of the cleaning cover (7) in a regular arrangement.

5. The device for detecting exhaust gas of an automobile according to claim 4, characterized in that: The cleaning nozzle (703) comprises a nozzle body (7031), a blocking plate (7032) is fixedly connected to one side of the inner position of the nozzle body (7031), and a one-way exhaust valve core (7033) is movably sleeved with the blocking plate (7032) at the top position.

6. The device for detecting exhaust gas of an automobile according to claim 1, characterized in that: The fixed bottom plate (3) is fixedly connected with the auxiliary damping gas collecting assembly (4), and the positions where the fixed bottom plate (3) is fixedly connected with the auxiliary damping gas collecting assembly (4) are fixedly connected with support plates (301), the support plates (301) are fixedly sleeved with cleaning nets (302) at the inner positions, the damping support (2) comprises a damping cavity pipe (201), the damping cavity pipe (201) is movably sleeved with a damping piston rod (202) at the inner position, and the damping cavity pipe (201) is movably sleeved with a damping spring (203) at the surface position.

7. The device for detecting exhaust gas of an automobile according to claim 1, characterized by: The cleaning filter element (12) is fixedly connected with the one-way air inlet elbow (10), and is provided with a cleaning exhaust port (1201) at the position, the cleaning filter element (12) is fixedly sleeved with an activated carbon core (1203) at the inner position, the activated carbon core (1203) is fixedly connected with a non-powered fan (1204) at the bottom position, and the non-powered fan (1204) is provided with a cleaning brush rod (1205) at the position away from the activated carbon core (1203).

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