Sampling device for automobile exhaust detection

Abstract

The utility model discloses a sampling device for detecting automobile exhaust. The sampling device comprises a sampling assembly, the movable assembly comprises a rotating shaft, a supporting disc, a filter screen, a fixing groove, a fixing ring and a fixing bolt; the rotating shaft sleeves one end of the outer side of the sampling box, the supporting disc is fixedly connected to the outer end of the rotating shaft, the filter screen is fixedly connected to the periphery of the interior of the supporting disc, the fixing grooves are formed in the periphery of the interior of the supporting disc, the fixing rings are fixedly connected to the outer surfaces of the communicating pipe and the probe pipe respectively, and the fixing bolts penetrate through the fixing grooves and extend outwards. The automobile exhaust sampling device solves the problems that when existing automobile exhaust is sampled, due to the fact that a probe pipe stretches into an exhaust pipe and inevitably makes contact with the interior of the exhaust pipe, impurities exist in the exhaust pipe due to long-term exhaust and contact with dust and the like, the impurities enter a sampling box from the interior of the probe pipe, and sampling is inaccurate if the probe pipe is light; and the sampling box is blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile exhaust gas detection, in particular to a sampling device for automobile exhaust gas detection. Background Technique

[0002] Automobile exhaust gas contains a large amount of toxic and harmful gases, which is the most direct and obvious. In cities with a large population density and a large number of vehicles, more exhaust gas is emitted, making it easier for people to directly inhale a large amount of exhaust gas, which can cause harm to the body, lead to various diseases, and even cause death. Therefore, it is necessary to regularly detect automobile exhaust gas.

[0003] When sampling existing automobile exhaust gas, when the probe tube extends into the tailpipe, it will inevitably come into contact with the inside of the tailpipe. Due to the long-term emission of exhaust gas and contact with dust and other substances inside the tailpipe, there will be impurities, which will enter the sampling box through the inside of the probe tube, resulting in inaccurate sampling at best and blocking the sampling box at worst. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a sampling device for automobile exhaust gas detection, so as to solve the problem mentioned in the above background technique that when sampling existing automobile exhaust gas, when the probe tube extends into the tailpipe, it will inevitably come into contact with the inside of the tailpipe. Due to the long-term emission of exhaust gas and contact with dust and other substances inside the tailpipe, there will be impurities, which will enter the sampling box through the inside of the probe tube, resulting in inaccurate sampling at best and blocking the sampling box at worst.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is a sampling device for automobile exhaust gas detection, including:

[0007] A sampling component, the sampling component includes a sampling box, a connecting pipe and a probe tube;

[0008] An activity component, the activity component includes a rotating shaft, a support disk, a filter screen, a fixing groove, a fixing ring and a fixing bolt;

[0009] The rotating shaft is sleeved at one end outside the sampling box, the support disk is fixedly connected to the outer end of the rotating shaft, the filter screen is fixedly connected to the inner periphery of the support disk, the fixing groove is opened at the inner periphery of the support disk, the fixing rings are respectively fixedly connected to the outer surfaces of the connecting pipe and the probe tube, and the fixing bolt extends outwards through the fixing groove.

[0010] Further, the connecting pipe is fixedly connected to the outer end of the sampling box, and the probe tube is located in front of the connecting pipe.

[0011] Further, the interior of the support disk is of a U-shaped structure, and the fixing rings are respectively located on both sides of the support disk.

[0012] Further, the diameter of the filter screen is the same as the diameters of the connecting pipe and the probe pipe respectively, and the fixing bolts also extend outward through the fixing rings.

[0013] Further, it further includes a fixing assembly, and the fixing assembly includes a fixing column, a through hole, a movable column, a fixing disk, a limiting disk and a movable block;

[0014] The fixing column is fixedly connected to the outer surface of the probe pipe, the through hole is opened on the outer surface of the fixing column, the movable column is placed inside the through hole, the fixing disk is fixedly connected to the top end of the movable column, the limiting disk is fixedly connected to the bottom end of the movable column, and the movable block is sleeved on the outer surface of the limiting disk.

[0015] Further, the movable block is located inside the fixing column and is located outside the probe pipe, and corresponding thread structures are provided on the outer surface of the movable column and the inner surface of the through hole.

[0016] Compared with the prior art, the advantages of the present utility model are as follows:

[0017] First, in the present utility model, by providing a movable assembly, the connecting pipe and the probe pipe are respectively fixed inside the support disk through the fixing rings and are corresponding to the position of the filter screen, so that the filter screen can filter the particulate matter in the tail gas. At the same time, after the sampling is completed, the fixing ring can be moved outward, and the support disk can be rotated to rotate the filter screen to the outer side position, thereby cleaning the filter screen.

[0018] Second, based on the first beneficial effect, by providing a fixing assembly, the fixing column is sleeved outside the tail gas pipe, the movable column is moved outward, so that the movable column drives the limiting disk to move outward, and the inward movement of the limiting disk drives the movable block to move outward. When the movable block moves to fit with the inner wall of the tail gas pipe, the probe pipe can be fixed inside the tail gas pipe, thereby preventing the probe pipe from falling off from the tail gas pipe during the sampling of the tail gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is the front view of the present utility model;

[0021] Figure 2 It is the structural diagram of the sampling assembly of the present utility model;

[0022] Figure 3 This is the structural diagram of the movable component of the present utility model;

[0023] Figure 4 This is the structural diagram of the fixed component of the present utility model.

[0024] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0025] 11. Sampling box; 12. Connecting pipe; 13. Probe pipe; 21. Rotating shaft; 22. Support disk; 23. Filter screen; 24. Fixed groove; 25. Fixed ring; 26. Fixed bolt; 31. Fixed column; 32. Through hole; 33. Movable column; 34. Fixed disk; 35. Limit disk; 36. Movable block. Detailed implementation manners

[0026] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model in conjunction with the attached drawings.

[0027] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar promotions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation manners disclosed below.

[0028] Secondly, the present utility model will be described in detail in conjunction with the schematic diagrams. When detailing the implementation manners of the present utility model, for the convenience of description, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0029] To make the purpose, technical solutions, and advantages of the present utility model clearer, the following will further describe the implementation manners of the present utility model in conjunction with the attached drawings.

[0030] Please refer to Figures 1 - 3 As shown, this embodiment is a sampling device for automobile exhaust gas detection, including:

[0031] A sampling component, which includes a sampling box 11, a connecting pipe 12, and a probe pipe 13;

[0032] A movable component, which includes a rotating shaft 21, a support disk 22, a filter screen 23, a fixed groove 24, a fixed ring 25, and a fixed bolt 26;

[0033] The rotating shaft 21 is sleeved at one end outside the sampling box 11. The support disk 22 is fixedly connected to the outer end of the rotating shaft 21. The filter screen 23 is fixedly connected to the positions around the inside of the support disk 22. The fixing groove 24 is opened at the positions around the inside of the support disk 22. The fixing rings 25 are respectively fixedly connected to the outer surfaces of the communicating pipe 12 and the probe pipe 13. The fixing bolts 26 penetrate through the fixing groove 24 and extend outwards.

[0034] The rotating shaft 21 is used to support the support disk 22. The support disk 22 is used to support the filter screen 23 and limit the fixing rings 25. The fixing groove 24 is used to place the fixing bolts 26. The fixing rings 25 are used to support the communicating pipe 12 and the probe pipe 13. The fixing bolts 26 are used to fix the fixing rings 25 and the support disk 22 together.

[0035] The communicating pipe 12 is fixedly connected to the outer end of the sampling box 11, and the probe pipe 13 is located in front of the communicating pipe 12.

[0036] The communicating pipe 12 is used to connect the probe pipe 13 and the sampling box 11 in communication. The probe pipe 13 is used to be placed inside the tail gas pipe.

[0037] The inside of the support disk 22 is of a U-shaped structure, and the fixing rings 25 are respectively located on both sides of the support disk 22.

[0038] The fixing rings 25 can rotate inside the support disk 22 and drive the communicating pipe 12 and the probe pipe 13 to rotate.

[0039] The diameter of the filter screen 23 is the same as the diameters of the communicating pipe 12 and the probe pipe 13 respectively, and the fixing bolts 26 also penetrate through the fixing rings 25 and extend outwards.

[0040] The filter screen 23 can filter the particulate impurities inside the probe pipe 13 to prevent them from entering the inside of the communicating pipe 12.

[0041] Working principle: When sampling the tail gas in the tail gas pipe, turn the fixing bolt 26 outwards so that the fixing bolt 26 does not fix the fixing ring 25, apply a rotational force to the support disk 22, and make the support disk 22 rotate driven by the rotating shaft 21. When the support disk 22 drives the filter screen 23 to rotate to a position corresponding to the communicating pipe 12 and the probe pipe 13, place the fixing bolt 26 through the fixing groove 24 and fix the fixing ring 25 at the position inside the support disk 22, thereby filtering the particulate impurities inside the probe pipe 13.

[0042] After sampling is completed, repeat the above steps until the filter screen 23 moves to the outside of the communicating pipe 12 and the probe pipe 13, so as to facilitate the cleaning of the filter screen 23.

[0043] Please refer to Figure 4As shown, this embodiment further includes, based on the above embodiment:

[0044] A fixing component, which includes a fixing column 31, a through hole 32, a movable column 33, a fixing disc 34, a limiting disc 35 and a movable block 36;

[0045] The fixing column 31 is fixedly connected to the outer surface of the probe tube 13. The through hole 32 is opened on the outer surface of the fixing column 31. The movable column 33 is placed inside the through hole 32. The fixing disc 34 is fixedly connected to the top end of the movable column 33. The limiting disc 35 is fixedly connected to the bottom end of the movable column 33. The movable block 36 is sleeved on the outer surface of the limiting disc 35;

[0046] The fixing column 31 is used to support the connecting pipe 12. The through hole 32 is used to place the movable column 33. The movable column 33 is used to support the fixing disc 34. The fixing disc 34 is used to drive the movable column 33 to rotate. The limiting disc 35 is used to drive the movable block 36 to move. The movable block 36 is used to contact the inner wall of the tail gas pipe;

[0047] The movable block 36 is located inside the fixing column 31 and outside the probe tube 13. Corresponding thread structures are provided on the outer surface of the movable column 33 and the inner surface of the through hole 32;

[0048] When the movable column 33 rotates inside the through hole 32, it can move up and down through the thread structure and be fixed inside the through hole 32;

[0049] Working principle: When it is necessary to fix the probe tube 13, the fixing column 31 is sleeved outside the tail gas pipe, and the probe tube 13 is placed inside the tail gas pipe. A rotational force is applied to the fixing disc 34. The fixing disc 34 drives the movable column 33 to rotate. The movable column 33 rotates and moves outward inside the through hole 32. At the same time, the movable column 33 drives the limiting disc 35 to rotate and move. The limiting disc 35 rotates inside the movable block 36 and drives the movable block 36 to move outward. When the movable block 36 moves outward to contact the inner wall of the tail gas pipe, the tail gas pipe can be clamped, thereby fixing the probe tube 13 inside the tail gas pipe.

[0050] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0051] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sampling device for automobile exhaust detection, characterized in that: include: A sampling assembly, the sampling assembly comprising a sampling box (11), a connecting pipe (12) and a probe pipe (13); A movable assembly, the movable assembly comprising a rotating shaft (21), a supporting plate (22), a filter screen (23), a fixing groove (24), a fixing ring (25) and a fixing bolt (26); The rotating shaft (21) is sleeved on one end of the outside of the sampling box (11), the supporting plate (22) is fixedly connected to the outer end of the rotating shaft (21), the filter screen (23) is fixedly connected to the surrounding positions inside the supporting plate (22), the fixing groove (24) is opened at the surrounding positions inside the supporting plate (22), the fixing ring (25) is respectively fixedly connected to the outer surface positions of the connecting pipe (12) and the probe pipe (13), and the fixing bolt (26) passes through the fixing groove (24) and extends outward.

2. A sampling device for automobile exhaust detection according to claim 1, characterized in that: The connecting pipe (12) is fixedly connected to the outer end of the sampling box (11), and the probe pipe (13) is located in front of the connecting pipe (12).

3. A sampling device for automobile exhaust detection according to claim 1, characterized in that: The interior of the support plate (22) is a U-shaped structure, and the fixing rings (25) are respectively located at two sides of the support plate (22).

4. A sampling device for automobile exhaust detection according to claim 1, characterized in that: The diameter of the filter screen (23) is respectively the same as the diameter of the connecting pipe (12) and the probe pipe (13), and the fixing bolt (26) also penetrates the fixing ring (25) and extends outward.

5. The sampling device for automobile exhaust detection according to claim 1, characterized in that: It also includes a fixing assembly, which includes a fixing column (31), a through hole (32), a movable column (33), a fixing disc (34), a limiting disc (35) and a movable block (36); The fixed column (31) is fixedly connected to the outer surface of the probe tube (13); the through hole (32) is opened on the outer surface of the fixed column (31); the movable column (33) is placed inside the through hole (32); the fixed disc (34) is fixedly connected to the top end of the movable column (33); the limiting disc (35) is fixedly connected to the bottom end of the movable column (33); and the movable block (36) is sleeved on the outer surface of the limiting disc (35).

6. A sampling device for automobile exhaust detection according to claim 5, characterized in that: The movable block (36) is located inside the fixed column (31), and the movable block (36) is located outside the probe tube (13). The outer surface of the movable column (33) and the inner surface of the through hole (32) are provided with corresponding thread structures.

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