Sleeve connecting device for tail gas detection

Abstract

The utility model relates to the technical field of tail gas detection, and provides a sleeve connecting device for tail gas detection, which comprises a mounting pipe, a rubber sleeve fixedly mounted on the left side of the mounting pipe, a spring fixedly mounted on the left side of an inner cavity of the rubber sleeve, and a plurality of left rubber strips fixedly mounted on the left side of the outer surface of the rubber sleeve. A rubber ring is fixedly mounted on the right side of the left rubber strip; a plurality of right rubber strips are fixedly mounted on the right side of the rubber ring; according to the sleeve connecting device for tail gas detection, through cooperative use of a rubber sleeve structure and a left rubber strip structure, during work, a left rubber strip, a rubber ring and a rubber sleeve are contracted so that the left rubber strip can be conveniently inserted into a vehicle tail gas pipe, and then the left rubber strip is slowly rotated and inserted until the left side of a mounting pipe is inserted into the vehicle tail gas pipe; at the moment, the rubber materials of the left rubber strip, the rubber ring and the right rubber strip are utilized to be tightly attached to the inner wall of the vehicle tail gas pipe, the sealing performance of the mounting pipe and the diameter of the vehicle tail gas pipe is improved, and the effect of quickly assembling tail gas exhaust pipes with different diameters of different vehicles is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust gas detection, and in particular to a sleeve connecting device for exhaust gas detection. Background Art

[0002] The rapid development of the modern economy has driven the rapid growth of the transportation industry, and automobiles have become one of the most important and popular means of transportation worldwide. China's annual automobile production has increased significantly year by year. Automobile exhaust pollution accounts for over 70% of atmospheric pollution, making it the primary source of mobile air pollution. Environmental monitoring departments and auto repair shops attach great importance to automobile exhaust testing. This can be done using sampling devices, which collect exhaust gas and then test it on specialized instruments. However, due to the varying diameters of exhaust pipes across different makes and models of vehicles, existing sampling devices typically have fixed diameters and are unable to accommodate the diverse sampling requirements of different vehicle exhaust pipe sizes.

[0003] After searching, the Chinese patent publication number is CN217999700U, which discloses an exhaust gas collection sleeve. When using this patent, a first sleeve, a second sleeve, or a third sleeve that matches the diameter of the automobile exhaust pipe can be selected, and then the first sleeve, the second sleeve, or the third sleeve is put on one end of the automobile exhaust pipe. The rubber ring is squeezed and deformed during installation to prevent exhaust gas leakage. After the exhaust gas enters the interior of the first sleeve, the control valve is opened, and the exhaust gas inside the first sleeve enters the interior of the gas collecting bottle through the control valve. The structure is simple, can adapt to automobile exhaust pipes of different specifications, and has a wide range of uses.

[0004] However, the above device only provides three sleeves of different diameters, namely the first sleeve, the second sleeve and the third sleeve, to meet the installation requirements of automobile exhaust pipes within three sleeve diameter ranges. This method only provides two more options and cannot meet the assembly requirements of exhaust pipes of different diameters of different automobiles. At the same time, the above device installs the collection sleeve before the vehicle starts working, so that it can only collect part of the exhaust gas at the beginning of the vehicle's work, and cannot detect the exhaust gas at different times during the operation of the vehicle, resulting in inaccurate detection data. Utility Model Content

[0005] The utility model proposes a sleeve connection device for exhaust gas detection, which has the advantages of being able to quickly assemble with exhaust pipes of different diameters of different vehicles and accurately collect exhaust gas at different times during the overall operation of the vehicle, thereby improving the accuracy of exhaust gas detection. It solves the problems in the related technology that it is impossible to quickly install with exhaust pipes of vehicles of different diameters and it is impossible to accurately collect exhaust gas at different times during the operation of the vehicle.

[0006] The technical solution of the utility model is as follows: a sleeve connecting device for exhaust gas detection, including a mounting tube, a rubber sleeve fixedly installed on the left side of the mounting tube, a spring fixedly installed on the left side of the inner cavity of the rubber sleeve, a plurality of left rubber strips fixedly installed on the left side of the outer surface of the rubber sleeve, a rubber ring fixedly installed on the right side of the left rubber strip, a plurality of right rubber strips fixedly installed on the right side of the rubber ring, and a sleeve fixedly installed on the right side of the mounting tube.

[0007] Preferably, an exhaust pipe is fixedly installed on the top of the right side of the sleeve, a collecting pipe is fixedly installed on the bottom of the right side of the sleeve, a semicircular groove is opened on the right side of the top of the outer surface of the sleeve, and sealing gaskets are fixedly installed on the left and right side walls of the inner cavity of the semicircular groove. A semicircular block is rotatably installed on the right side of the inner cavity of the sleeve, a cross bar is fixedly installed on the top of the semicircular block, and a knob is fixedly installed on the rear side of the cross bar.

[0008] Preferably, the spring is arranged at the leftmost side of the inner cavity of the rubber sleeve, and the left rubber strip, rubber ring and right rubber strip are all made of synthetic rubber material. Therefore, when in use, the left rubber strip, rubber ring and right rubber strip can shrink due to their own rubber material, and cooperate with the position of the spring setting, so that the leftmost side of the rubber sleeve will not be closed due to the smaller diameter of the inner cavity of the vehicle exhaust pipe, thereby improving the exhaust emission collection efficiency.

[0009] Preferably, the diameters of the cross-sections of the outer surfaces of the left rubber strip, rubber ring and right rubber strip are all the same, and the diameters of the cross-sections of the outer surfaces of the left rubber strip, rubber ring and right rubber strip are larger than the minimum cross-sectional diameter of the vehicle exhaust pipe. The left sides of all left rubber strips are arc-shaped, and the rubber ring is arranged at the connection between the rubber sleeve and the mounting tube. Therefore, when in use, due to the diameters of the left rubber strip, rubber ring and right rubber strip, it is necessary to first shrink the left rubber strip, rubber ring and rubber sleeve during installation to facilitate the insertion of the left rubber strip into the vehicle exhaust pipe, and then slowly rotate and insert it until the left side of the mounting tube is inserted into the vehicle exhaust pipe. At this time, the rubber material of the left rubber strip, rubber ring and right rubber strip is utilized to make them fit tightly against the inner wall of the vehicle exhaust pipe, thereby improving the sealing between the mounting tube and the diameter of the vehicle exhaust pipe.

[0010] Preferably, the diameters of the cross-sections of the outer surfaces of the mounting tube and the rubber sleeve are smaller than the cross-section diameters of the inner cavities of the exhaust pipes of all vehicles, and the mounting tube and the sleeve are both constructed of synthetic plastic material. Thus, when in use, the diameters of the outer surfaces of the mounting tube and the rubber sleeve are utilized to facilitate the rapid insertion of the mounting tube and the rubber sleeve into the inner cavities of the exhaust pipes of different vehicles, and the synthetic plastic material of the mounting tube is combined with the stability of the mounting tube during use.

[0011] Preferably, the outer surface of the collection tube is provided with threads matching the inner wall of the collection tube, so that when in use, the threads provided on the outer surface of the collection tube facilitate quick installation and removal of the exhaust gas collection tube.

[0012] Preferably, the shape of the semicircular block cross section is larger than the shape of the exhaust pipe lumen cross section and the collecting pipe lumen cross section, and the exhaust pipe and the collecting pipe are in communication with the sleeve, so that in use, the semicircular block can effectively block the exhaust pipe or the collecting pipe.

[0013] Preferably, the knob is attached to the outer surface of the sleeve, and the front and back sides of the sealing gasket are arc-shaped, so that in use, the semicircular groove and the horizontal rod can only rotate within the semicircular groove range by the knob and the semicircular groove, and the shape of the sealing gasket facilitates the movement of the knob and the horizontal rod in the semicircular groove lumen.

[0014] The working principle and beneficial effects of the utility model are as follows:

[0015] 1. The sleeve connecting device for tail gas detection, through the cooperation of the rubber sleeve structure and the left rubber strip structure, in operation, first contract the left rubber strip, the rubber ring and the rubber sleeve to facilitate the insertion of the left rubber strip into the vehicle tail gas pipe, then slowly rotate and insert, until the left side of the installation pipe is inserted into the vehicle tail gas pipe, at this time, the rubber material of the left rubber strip, the rubber ring and the right rubber strip makes them tightly adhere to the inner wall of the vehicle tail gas pipe, improves the sealing performance of the installation pipe and the vehicle tail gas pipe diameter, and achieves the effect of quickly assembling with different vehicle tail gas exhaust pipes of different diameters.

[0016] 2. The sleeve connecting device for tail gas detection, through the cooperation of the horizontal rod structure and the semicircular block structure, in operation, first start the vehicle, and then install the tail gas collecting test tube on the outer surface of the collecting pipe through threads, then when collecting automobile tail gas, rotate the knob to make the semicircular block rotate to the top of the right side of the sleeve lumen, so as to block the exhaust pipe, facilitate the tail gas to enter the tail gas collecting test tube through the collecting pipe, and after the collection is completed, rotate the knob in the opposite direction to make the exhaust pipe open and the collecting pipe block, so as to accurately collect the tail gas at different time periods in the whole running process of the vehicle and improve the accuracy of tail gas detection. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0018] Figure 1 It is the front appearance schematic view of the whole structure of the utility model;

[0019] Figure 2 It is the side appearance schematic view of the whole structure of the utility model;

[0020] Figure 3 It is the appearance schematic view of the whole structure of the utility model after being cut open;

[0021] Figure 4 It is the structure schematic view of the utility model Figure 3 at A.

[0022] In the figure: 1, installation pipe; 2, rubber sleeve; 3, spring; 4, left rubber strip; 5, rubber ring; 6, right rubber strip; 7, sleeve; 8, exhaust pipe; 9, collection pipe; 10, semicircular groove; 11, sealing gasket; 12, semicircular block; 13, crossbar; 14, knob. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the present application.

[0024] Please refer to Figures 1 to 4As shown, a sleeve connection device for exhaust gas detection includes a mounting tube 1, a rubber sleeve 2 is fixedly installed on the left side of the mounting tube 1, the diameters of the cross-sections of the outer surfaces of the mounting tube 1 and the rubber sleeve 2 are smaller than the cross-section diameters of the inner cavities of the exhaust pipes of all vehicles, the mounting tube 1 and the sleeve 7 are both constructed of synthetic plastic material, so that when in use, the diameters of the outer surfaces of the mounting tube 1 and the rubber sleeve 2 are utilized to facilitate the rapid insertion of the mounting tube 1 and the rubber sleeve 2 into the inner cavities of the exhaust pipes of different vehicles, and the synthetic plastic material of the mounting tube 1 is matched to improve the stability of the mounting tube 1 when in use, a spring 3 is fixedly installed on the left side of the inner cavity of the rubber sleeve 2, a plurality of left rubber strips 4 are fixedly installed on the left side of the outer surface of the rubber sleeve 2, a rubber ring 5 is fixedly installed on the right side of the left rubber strip 4, and a Multiple right rubber strips 6, spring 3 is set on the leftmost side of the inner cavity of the rubber sleeve 2, and the left rubber strip 4, rubber ring 5 and right rubber strip 6 are all made of synthetic rubber material. Therefore, when in use, the left rubber strip 4, rubber ring 5 and right rubber strip 6 can shrink due to their own rubber material, and cooperate with the position of the spring 3 so that the leftmost side of the rubber sleeve 2 will not be closed due to the smaller diameter of the inner cavity of the vehicle exhaust pipe, thereby improving the exhaust emission collection efficiency. The diameters of the outer cross-sections of the left rubber strip 4, rubber ring 5 and right rubber strip 6 are the same. The diameters of the outer cross-sections of the left rubber strip 4, rubber ring 5 and right rubber strip 6 are larger than the minimum cross-sectional diameter of the vehicle exhaust pipe. The left sides of all left rubber strips 4 are arc-shaped. The rubber ring 5 is set at the rubber sleeve 2 and the installation The connection of the tube 1, so when it is used, because the diameters of the left rubber strip 4, rubber ring 5 and right rubber strip 6 make it necessary to shrink the left rubber strip 4, rubber ring 5 and rubber sleeve 2 first to facilitate the insertion of the left rubber strip 4 into the vehicle exhaust pipe, and then slowly rotate and insert it until the left side of the mounting tube 1 is inserted into the vehicle exhaust pipe. At this time, the rubber material of the left rubber strip 4, rubber ring 5 and right rubber strip 6 is used to make it fit tightly against the inner wall of the vehicle exhaust pipe, thereby improving the sealing performance of the mounting tube 1 and the diameter of the vehicle exhaust pipe. A sleeve 7 is fixedly installed on the right side of the mounting tube 1, an exhaust pipe 8 is fixedly installed on the top of the right side of the sleeve 7, and a collecting tube 9 is fixedly installed on the bottom of the right side of the sleeve 7. The outer surface of the collecting tube 9 is provided with a thread matching the inner wall of the collecting tube, so that when it is used, The thread opened on the outer surface of the collecting tube 9 facilitates the quick installation and disassembly of the exhaust gas collecting tube. A semicircular groove 10 is opened on the right side of the top of the outer surface of the sleeve 7. The left and right side walls of the inner cavity of the semicircular groove 10 are fixedly installed with a sealing gasket 11. A semicircular block 12 is rotatably installed on the right side of the inner cavity of the sleeve 7. The cross section of the semicircular block 12 is larger than the cross section of the inner cavity of the exhaust pipe 8 and the cross section of the inner cavity of the collecting tube 9. The exhaust pipe 8 and the collecting tube 9 are connected to the sleeve 7, so that when in use, the semicircular block 12 can be used to effectively block the exhaust pipe 8 or the collecting tube 9. A cross bar 13 is fixedly installed on the top of the semicircular block 12, and a knob 14 is fixedly installed on the rear side of the cross bar 13. The knob 14 fits the outer surface of the sleeve 7. The front and rear sides of the sealing gasket 11 are both arc-shaped, so that when in use,The knob 14 and the semicircular groove 10 allow the semicircular block 12 and the crossbar 13 to rotate only within the semicircular groove 10. At the same time, the shape of the sealing gasket 11 facilitates the movement of the knob 14 and the crossbar 13 within the semicircular groove 10.

[0025] Working principle: When working, first shrink the left rubber strip 4, rubber ring 5 and rubber sleeve 2 to facilitate the insertion of the left rubber strip 4 into the vehicle exhaust pipe, then slowly rotate and insert until the left side of the mounting tube 1 is inserted into the vehicle exhaust pipe. At this time, the rubber material of the left rubber strip 4, rubber ring 5 and right rubber strip 6 is used to make them fit tightly against the inner wall of the vehicle exhaust pipe, thereby improving the sealing performance between the mounting tube 1 and the diameter of the vehicle exhaust pipe. After installation, slowly rotate to quickly separate the rubber sleeve 2, mounting tube 1 and the vehicle exhaust pipe.

[0026] During the exhaust gas collection process, first start the assembly of the entire device and the vehicle exhaust pipe, then start the vehicle, and then install the exhaust gas collection tube on the outer surface of the collection tube 9 through threads. When collecting automobile exhaust gas, rotate the knob 14 to rotate the semicircular block 12 to the top of the right side of the inner cavity of the sleeve 7, thereby blocking the exhaust pipe 8, making it easier for the exhaust gas to enter the exhaust gas collection tube through the collection tube 9. After the collection is completed, rotate the knob 14 in the opposite direction to open the exhaust pipe 8 and block the collection tube 9. At this time, the automobile exhaust is discharged through the exhaust pipe 8. The same method is then used to collect automobile exhaust at different time periods.

[0027] To sum up, compared with general similar devices, this sleeve connection device for exhaust gas detection has the advantages of being able to quickly assemble with exhaust pipes of different diameters of different vehicles and accurately collect exhaust gas at different times during the overall operation of the vehicle, thereby improving the accuracy of exhaust gas detection.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sleeve connection device for exhaust gas detection, characterized in that: The invention comprises a mounting tube (1), a rubber sleeve (2) is fixedly mounted on the left side of the mounting tube (1), a spring (3) is fixedly mounted on the left side of the inner cavity of the rubber sleeve (2), a plurality of left rubber strips (4) are fixedly mounted on the left side of the outer surface of the rubber sleeve (2), a rubber ring (5) is fixedly mounted on the right side of the left rubber strip (4), a plurality of right rubber strips (6) are fixedly mounted on the right side of the rubber ring (5), and a sleeve (7) is fixedly mounted on the right side of the mounting tube (1).

2. The sleeve connection device for exhaust gas detection according to claim 1, characterized in that: An exhaust pipe (8) is fixedly installed on the top of the right side of the sleeve (7), a collecting pipe (9) is fixedly installed on the bottom of the right side of the sleeve (7), a semicircular groove (10) is opened on the right side of the top of the outer surface of the sleeve (7), and sealing gaskets (11) are fixedly installed on the left and right side walls of the inner cavity of the semicircular groove (10), a semicircular block (12) is rotatably installed on the right side of the inner cavity of the sleeve (7), a cross bar (13) is fixedly installed on the top of the semicircular block (12), and a knob (14) is fixedly installed on the rear side of the cross bar (13).

3. The sleeve connection device for exhaust gas detection according to claim 1, characterized in that: The spring (3) is arranged at the leftmost side of the inner cavity of the rubber sleeve (2), and the left rubber strip (4), the rubber ring (5) and the right rubber strip (6) are all made of synthetic rubber material.

4. The sleeve connection device for exhaust gas detection according to claim 1, characterized in that: The diameters of the cross-sections of the outer surfaces of the left rubber strip (4), the rubber ring (5) and the right rubber strip (6) are all the same. The diameters of the cross-sections of the outer surfaces of the left rubber strip (4), the rubber ring (5) and the right rubber strip (6) are larger than the minimum cross-section diameter of the vehicle exhaust pipe. The left sides of all left rubber strips (4) are designed in an arc shape. The rubber ring (5) is arranged at the connection between the rubber sleeve (2) and the mounting tube (1).

5. The sleeve connection device for exhaust gas detection according to claim 1, characterized in that: The diameters of the cross-sections of the outer surfaces of the mounting tube (1) and the rubber sleeve (2) are both smaller than the cross-section diameters of the inner cavities of all vehicle exhaust pipes, and the mounting tube (1) and the sleeve (7) are both made of synthetic plastic material.

6. The sleeve connection device for exhaust gas detection according to claim 2, characterized in that: The outer surface of the collecting tube (9) is provided with a thread matching the inner wall of the collecting tube.

7. The sleeve connection device for exhaust gas detection according to claim 2, characterized in that: The cross-section of the semicircular block (12) is larger than the cross-section of the inner cavity of the exhaust pipe (8) and the cross-section of the inner cavity of the collecting pipe (9), and the exhaust pipe (8) and the collecting pipe (9) are connected to the sleeve (7).

8. The sleeve connection device for exhaust gas detection according to claim 2, characterized in that: The knob (14) fits the outer surface of the sleeve (7), and the front and rear sides of the sealing gasket (11) are both arc-shaped.

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