Automobile exhaust analyzer

Abstract

The utility model discloses an automobile exhaust analyzer which comprises a detection mechanism and a filtering mechanism, the detection mechanism comprises a box body, the top of the box body is fixedly connected with a tail gas analyzer body, one side of the box body is provided with an insertion hole into which a probe of the tail gas analyzer body is inserted, and the other side of the box body is communicated with a gas inlet pipe through a gas inlet hopper; the filtering mechanism comprises an air guide pipe and a connecting base fixedly connected to one end of the air inlet pipe, and a through groove allowing the air guide pipe to be inserted therein is formed in the connecting base. According to the automobile exhaust analyzer, the filtering mechanism convenient to disassemble and assemble is arranged, after an activated carbon adsorption net is inserted into a through groove, the activated carbon adsorption net can abut against through a gas guide pipe, after a rod body penetrates through a through hole, a check block can make a ring body abut against a connecting block under the action of a spring, and therefore the activated carbon adsorption net is stably installed; meanwhile, the disassembly is also convenient; by means of the arrangement, the filtering element used for adsorbing water vapor is more convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas detection, in particular to an automobile tail gas analyzer. Background Art

[0002] As is known to all, automobile exhaust analyzer is an instrument used to detect the content index of various gas elements in automobile exhaust. In order to reduce the interference of water vapor in automobile exhaust to the exhaust analyzer probe, China Patent Network has disclosed an automobile exhaust analyzer with exhaust gas dehydration device with publication number CN213684266U, including an analyzer body, a detection box, an intake pipe, a filter device, a partition and an exhaust pipe. The detection box is arranged below the analyzer body, and a cavity is arranged in the detection box; one end of the intake pipe is connected to the detection cavity, and the other end is used to connect the automobile exhaust pipe; the filter device is arranged on the intake pipe and connected to the intake pipe; the partition is arranged in the cavity of the detection box, dividing the cavity into a detection cavity and a purification cavity, and a vent is arranged on the partition; the exhaust pipe is connected to the purification cavity. Through the above technical scheme, the problems of poor measurement accuracy and environmental pollution are solved.

[0003] However, although the automobile exhaust analyzer mentioned in the above patent effectively absorbs water vapor in automobile exhaust by using a filtering device, it lacks a functional setting for convenient disassembly and assembly of the filter element inside the filtering device, which leads to inconvenience in replacing the filter element. For this reason, we propose an automobile exhaust analyzer. Utility Model Content

[0004] The purpose of the utility model is to provide an automobile exhaust analyzer to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automobile exhaust gas analyzer, comprising: a detection mechanism and a filtering mechanism;

[0006] The detection mechanism comprises a box body, the top of which is fixedly connected to the exhaust gas analyzer body, one side of which is provided with a jack for inserting the probe of the exhaust gas analyzer body, and the other side of which is connected to the intake pipe through the intake hopper;

[0007] The filtering mechanism includes an air duct and a connecting seat fixedly connected to one end of the air inlet pipe, a through groove for inserting the air duct is provided inside the connecting seat, one side of the through groove is connected to the inner cavity of the air inlet pipe, an activated carbon adsorption net is arranged inside the through groove, a first sealing ring is fixedly mounted on the activated carbon adsorption net, the first sealing ring is affixed to the inner side wall of the through groove, a connecting block is symmetrically fixedly connected to the outer side of the connecting seat, a rod body is fixedly connected to one side of the connecting block, an empty groove is provided inside the rod body, a spring is fixedly connected to the inner side wall of the empty groove, a stopper is fixedly connected to one end of the spring, the stopper is movably connected to the inside of the empty groove, a ring body is fixedly mounted on the air duct, and through holes for inserting the rod body are symmetrically arranged inside the ring body.

[0008] By adopting the above technical solution, after the exhaust gas of the automobile is discharged, it can enter the interior of the box through the air intake pipe and the air intake scoop, so that the exhaust gas analyzer body can detect and analyze the exhaust gas in the box by inserting the probe into the jack; in addition, when the air duct is connected to the automobile exhaust pipe, the exhaust gas discharged from the exhaust pipe can enter the interior of the connecting seat through the air duct, so that the activated carbon adsorption net can absorb the water vapor in the exhaust gas, thereby reducing the interference of water vapor to the exhaust gas analyzer probe, and when the activated carbon adsorption net needs to be replaced, the two blocks can be pressed into the empty groove to make the ring body lose the fixing force, so that the air duct can be pulled out of the through groove, and the activated carbon adsorption net and the first sealing ring can be removed from the through groove for replacement.

[0009] Preferably, a second sealing ring is fixedly connected to the inner side wall of the through groove.

[0010] By adopting the above technical solution, the air guide pipe inserted into the through groove can be sealed, thereby preventing the exhaust gas from flowing out from the gap between the air guide pipe and the through groove.

[0011] Preferably, a sliding groove is provided on the inner side wall of the empty groove, a sliding block is slidably connected to the inner side wall of the sliding groove, and one side of the sliding block is fixedly connected to a stopper.

[0012] By adopting the above technical solution, the stopper can be limited to move in a straight line trajectory, so that the stopper can stably press against the ring body under the action of the spring.

[0013] Preferably, an air outlet pipe is fixedly connected to a side of the box body away from the air inlet pipe, and one end of the air outlet pipe is in communication with the interior of the box body.

[0014] By adopting the above technical solution, the exhaust gas can be easily discharged from the box.

[0015] Preferably, the bottom of the box body is evenly and fixedly connected with bumps.

[0016] By adopting the above technical solution, the stability of the box when it is placed in use can be improved.

[0017] Preferably, a hand strap is fixedly connected to the outer side of the box.

[0018] By adopting the above technical solution, the box and the exhaust gas analyzer body can be easily moved and carried.

[0019] Preferably, the top of the box is fixedly connected to the exhaust gas analyzer body by screws.

[0020] By adopting the above technical solution, the exhaust gas analyzer body can be easily disassembled and assembled on the box body.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] The automobile exhaust analyzer is provided with a filtering mechanism on the detection mechanism, so that after the activated carbon adsorption net is inserted into the through groove, the activated carbon adsorption net can be pressed tightly through the air guide pipe, and after the rod body passes through the through hole, the stopper can press the ring body against the connecting block under the action of the spring, so that the activated carbon adsorption net is firmly installed and easy to disassemble; through the above arrangement, the filter element used for adsorbing water vapor is more convenient to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the automobile exhaust gas analyzer of the utility model;

[0024] Figure 2 It is an enlarged schematic diagram of area A of the structural schematic diagram of the automobile exhaust gas analyzer of the utility model;

[0025] Figure 3 This is a structural schematic diagram of a connecting block and a rod body in the automobile exhaust gas analyzer of the utility model;

[0026] Figure 4 It is a structural schematic diagram of the slideway and the slider in the automobile exhaust gas analyzer of the utility model;

[0027] Figure 5 The utility model is a schematic diagram of the structure of the exhaust pipe and the intake pipe of the automobile exhaust analyzer.

[0028] In the figure: 1. detection mechanism; 10. housing; 11. exhaust gas analyzer body; 12. air intake hopper; 13. air intake pipe; 14. hand strap; 15. air outlet pipe; 16. jack; 17. bump; 2. filtering mechanism; 20. connecting seat; 21. air guide pipe; 22. through groove; 23. activated carbon adsorption net; 24. first sealing ring; 25. ring body; 26. through hole; 27. connecting block; 28. rod body; 29. ​​empty groove; 201. spring; 202. block; 203. slide groove; 204. second sealing ring; 205. slider. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-Figure 5 , the utility model provides a technical solution: an automobile exhaust analyzer, comprising: a detection mechanism 1 and a filtering mechanism 2;

[0031] First, in order to allow the exhaust gas of the automobile to enter the interior of the box body 10 through the intake pipe 13 and the intake scoop 12 after being discharged, so that the exhaust gas analyzer body 11 can detect and analyze the exhaust gas in the box body 10 by inserting the probe into the jack 16; the detection mechanism 1 includes a box body 10, the top of the box body 10 is fixedly connected to the exhaust gas analyzer body 11, one side of the box body 10 is provided with a jack 16 for inserting the probe of the exhaust gas analyzer body 11, and the other side of the box body 10 is connected to the intake pipe 13 through the intake scoop 12; in order to facilitate the exhaust gas discharge The box 10 is fixedly connected with an outlet pipe 15 on one side of the box 10 away from the air inlet pipe 13, and one end of the outlet pipe 15 is connected to the inside of the box 10; in order to improve the stability of the box 10 when it is placed and used, the bottom of the box 10 is evenly fixedly connected with a bump 17; in order to facilitate the movement and carrying of the box 10 and the exhaust gas analyzer body 11, the outer side of the box 10 is fixedly connected with a hand strap 14; in order to facilitate the disassembly and assembly of the exhaust gas analyzer body 11 on the box 10, the top of the box 10 is fixedly connected to the exhaust gas analyzer body 11 by screws;

[0032] Secondly, when the air duct 21 is connected to the exhaust pipe of the automobile, the exhaust gas discharged from the exhaust pipe can enter the interior of the connecting seat 20 through the air duct 21, so that the activated carbon adsorption net 23 can absorb the water vapor in the exhaust gas, thereby reducing the interference of the water vapor on the exhaust gas analyzer probe, and when the activated carbon adsorption net 23 needs to be replaced, the ring body 25 can lose the fixing force by pressing the two blocks 202 into the empty groove 29, so that the air duct 21 can be removed from the through groove 22. The filter mechanism 2 includes an air guide tube 21 and a connection seat 20 fixedly connected to one end of the air inlet tube 13. A through groove 22 for inserting the air guide tube 21 is provided inside the connection seat 20. One side of the through groove 22 is connected to the inner cavity of the air inlet tube 13. An activated carbon adsorption net 23 is arranged inside the through groove 22. A first sealing ring 24 is fixedly mounted on the activated carbon adsorption net 23. The first sealing ring 24 fits in the through groove. On the inner side wall of the connecting seat 22, the outer side of the connecting seat 20 is symmetrically fixedly connected with a connecting block 27, one side of the connecting block 27 is fixedly connected with a rod body 28, an empty slot 29 is provided inside the rod body 28, a spring 201 is fixedly connected to the inner side wall of the empty slot 29, one end of the spring 201 is fixedly connected with a stopper 202, and the stopper 202 is movably connected inside the empty slot 29, and a ring body 25 is fixedly sleeved on the air guide tube 21, and a through hole 26 for inserting the rod body 28 is symmetrically provided inside the ring body 25; in order to be able to insert the through hole The air duct 21 of the groove 22 is sealed to prevent exhaust gas from flowing out from the gap between the air duct 21 and the through groove 22, and the inner wall of the through groove 22 is fixedly connected with a second sealing ring 204; in order to enable the block 202 to be limited to move in a straight trajectory, so that the block 202 can stably press the ring body 25 under the action of the spring 201, a sliding groove 203 is opened on the inner wall of the empty groove 29, and a slider 205 is slidably connected to the inner wall of the sliding groove 203, and one side of the slider 205 is fixedly connected to the block 202.

[0033] The working steps of this scheme are summarized and sorted out according to the above technical scheme: when in use, after the exhaust gas of the automobile is discharged, it can enter the interior of the box body 10 through the intake pipe 13 and the intake hopper 12, so that the exhaust gas analyzer body 11 can detect and analyze the exhaust gas in the box body 10 by inserting the probe into the jack 16; in addition, when the air duct 21 is connected to the exhaust pipe of the automobile, the exhaust gas discharged from the exhaust pipe can enter the interior of the connecting seat 20 through the air duct 21, so that the activated carbon adsorption net 23 can absorb the water vapor in the exhaust gas, thereby reducing the interference of the water vapor to the exhaust gas analyzer probe, and when the activated carbon adsorption net 23 needs to be replaced, the two blocks 202 can be pressed into the empty groove 29 to make the ring body 25 lose the fixing force, so that the air duct 21 can be removed from the through groove 22 The activated carbon adsorption net 23 and the first sealing ring 24 can be removed from the through groove 22 for replacement; when the replaced activated carbon adsorption net 23 needs to be installed, the replaced activated carbon adsorption net 23 and the first sealing ring 24 can be inserted into the through groove 22 first, and at this time the first sealing ring 24 can fit with the inner wall of the through groove 22, and then the air guide tube 21 is inserted into the through groove 22, so that the activated carbon adsorption net 23 can be pressed against the side wall of the through groove 22 close to the port of the intake pipe 13 by the air guide tube 21, and at this time the rod body 28 can pass through the through hole 26, so that the block 202 can be moved out of the empty groove 29 under the resetting action of the spring 201 and press the ring body 25 against the connecting block 27, so that the air guide tube 21 and the connecting seat 20 can be firmly installed, thereby completing the installation of the activated carbon adsorption net 23.

[0034] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automobile exhaust gas analyzer, characterized in that: include: A detection mechanism (1) and a filtering mechanism (2); The detection mechanism (1) comprises a box (10), the top of which is fixedly connected to an exhaust gas analyzer body (11), one side of which is provided with a plug hole (16) for inserting a probe of the exhaust gas analyzer body (11), and the other side of the box (10) is connected to an intake pipe (13) via an intake hopper (12); The filtering mechanism (2) comprises an air guide tube (21) and a connecting seat (20) fixedly connected to one end of an air intake tube (13); a through groove (22) for inserting the air guide tube (21) is provided inside the connecting seat (20); one side of the through groove (22) is communicated with the inner cavity of the air intake tube (13); an activated carbon adsorption net (23) is provided inside the through groove (22); a first sealing ring (24) is fixedly mounted on the activated carbon adsorption net (23); the first sealing ring (24) is fitted on the inner side wall of the through groove (22); A connecting block (27) is symmetrically fixedly connected to the outside, a rod body (28) is fixedly connected to one side of the connecting block (27), a hollow groove (29) is provided inside the rod body (28), a spring (201) is fixedly connected to the inner wall of the hollow groove (29), a stopper (202) is fixedly connected to one end of the spring (201), and the stopper (202) is movably connected inside the hollow groove (29), and a ring body (25) is fixedly sleeved on the air guide tube (21), and a through hole (26) for inserting the rod body (28) is symmetrically provided inside the ring body (25).

2. The automobile exhaust gas analyzer according to claim 1, characterized in that: A second sealing ring (204) is fixedly connected to the inner side wall of the through groove (22).

3. The automobile exhaust gas analyzer according to claim 1, characterized in that: The inner side wall of the empty slot (29) is provided with a sliding slot (203), the inner side wall of the sliding slot (203) is slidably connected with a sliding block (205), and one side of the sliding block (205) is fixedly connected to the stopper (202).

4. The automobile exhaust gas analyzer according to claim 1, characterized in that: An air outlet pipe (15) is fixedly connected to a side of the box (10) away from the air inlet pipe (13), and one end of the air outlet pipe (15) is in communication with the interior of the box (10).

5. The automobile exhaust gas analyzer according to claim 4, characterized in that: The bottom of the box body (10) is evenly and fixedly connected with projections (17).

6. The automobile exhaust gas analyzer according to claim 5, characterized in that: A hand strap (14) is fixedly connected to the outer side of the box body (10).

7. The automobile exhaust gas analyzer according to claim 6, characterized in that: The top of the box (10) is fixedly connected to the exhaust gas analyzer body (11) by means of screws.

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