A device for monitoring exhaust gases from a vehicle

Abstract

The application relates to a car exhaust monitoring device, which comprises a sleeve sheathed on a car exhaust pipe, an exhaust monitoring mechanism and a dust screen are sequentially arranged in the open end of the sleeve, a set of expansion parts are arranged on the open end of the sleeve on the same side of the exhaust pipe, a plurality of groups of metal arc-shaped strips are axially arranged in the expansion part openings of the sleeve, a clamp is arranged in the expansion part openings and is used for bundling and fixing the plurality of groups of arc-shaped strips on the exhaust pipe, bolts are screwed on the side walls of the expansion parts and are used for locking and fixing the corresponding arc-shaped strips on the exhaust pipe, an extension plate is arranged on the open end of the sleeve and extends into the opening of the exhaust pipe, and barbs are arranged on the extension plate and are used for abutting against the inner wall of the exhaust pipe; an arc-shaped opening is arranged on the sleeve close to the exhaust pipe, a filter screen is arranged in the arc-shaped opening and is used for separating the opening of the sleeve into two parts, and a screw pipe is screwed on the sleeve and is used for sealing the arc-shaped opening. The application has the advantages of simple structure and convenient use.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas monitoring devices, and particularly to an automotive exhaust gas monitoring device. Background Technology

[0002] Automobiles continuously emit large amounts of exhaust gas during operation, and automobile exhaust gas is a significant pollutant causing urban environmental pollution. Research on automobile exhaust emission reduction and analysis of exhaust gas composition and quantity are of great significance for improving vehicle performance and protecting the environment. With the increasing awareness of environmental protection, people are paying more and more attention to the pollution caused by exhaust gas. In order to more effectively analyze the composition of exhaust gas, a high-precision automobile exhaust gas monitoring device has been designed. Its installation method is vehicle-mounted, with the mounting port fitted onto the exhaust pipe and then fixed to the exhaust pipe with bolts.

[0003] Specifically, a high-precision vehicle exhaust gas monitoring device with patent number CN215292632U has the following defects when it is installed on the exhaust pipe to monitor exhaust gas: the method of fixing it by locking the threaded rod and the pressure plate alone makes it difficult to ensure that the mounting cylinder will not slip off the exhaust pipe when the car vibrates during driving. At the same time, the connection between the filter screen and the mounting cylinder is relatively complicated, making it difficult to install and disassemble. Furthermore, long-term use may affect its safety. Summary of the Invention

[0004] The purpose of this invention is to provide a vehicle exhaust gas monitoring device.

[0005] The technical problem of this invention is mainly solved by the following technical solution:

[0006] A vehicle exhaust gas monitoring device includes a sleeve that is fitted over a vehicle exhaust pipe, wherein an exhaust gas monitoring mechanism and a dustproof net are sequentially disposed within the opening at the end of the sleeve.

[0007] A ring of expansion section is provided at the end of the sleeve on the same side as the exhaust pipe. The end of the sleeve is also provided with multiple sets of metal arc-shaped strips located in the opening of the expansion section. The opening of the expansion section is provided with clamps to bind and fix the multiple sets of arc-shaped strips to the exhaust pipe. Bolts are also screwed onto the side wall of the expansion section to lock and fix the corresponding arc-shaped strips to the exhaust pipe. The end of the sleeve is provided with an extension plate extending into the opening of the exhaust pipe. The extension plate is provided with barbs that abut against the inner wall of the exhaust pipe.

[0008] An arc-shaped opening is provided on the sleeve near the exhaust pipe. A filter screen is installed inside the arc-shaped opening to divide the opening into two parts. A screw tube is screwed onto the sleeve to seal the arc-shaped opening.

[0009] Preferably, a magnetic limiting ring is arranged around the outer wall of the sleeve, which abuts against one end of the solenoid tube.

[0010] Preferably, the end face of the arc-shaped strip that is in contact with the outer wall of the exhaust pipe is provided with anti-slip texture.

[0011] Preferably, the expansion section has a threaded hole on its side wall for screwing with the bolt, and the clamp is located between the corresponding ends of the bolt and the sleeve.

[0012] Preferably, an operating opening corresponding to the clamp is provided on one side wall of the expansion section.

[0013] The beneficial effects of this invention are: by hooking the barbs on the inner wall of the exhaust pipe and locking the arc strip with bolts and clamps, this invention prevents the sleeve from slipping off the end of the exhaust pipe, thereby improving the stability of the connection between them. At the same time, the arc opening is sealed by the screw tube connected to the sleeve, preventing the filter screen inside the sleeve from slipping out. Furthermore, the filter screen can be easily replaced and maintained simply by turning the screw tube to open the arc opening. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the present invention;

[0015] Figure 2 yes Figure 1 A schematic diagram of a partial structure;

[0016] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0017] In the diagram: 1. Exhaust pipe, 2. Sleeve, 3. Exhaust gas monitoring mechanism, 4. Dustproof net, 5. Expansion section, 6. Arc-shaped strip, 7. Clamp, 8. Bolt, 9. Extension plate, 10. Arc-shaped opening, 11. Filter screen, 12. Helical tube, 13. Limiting ring, 14. Operating opening. Detailed Implementation

[0018] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0019] A vehicle exhaust gas monitoring device includes a sleeve 2 that is fitted onto a vehicle exhaust pipe 1, and an exhaust gas monitoring mechanism 3 and a dustproof net 4 are sequentially arranged inside the opening at the end of the sleeve 2.

[0020] An expansion section 5 is provided at the end of the sleeve on the same side as the exhaust pipe 1. The end of the sleeve 2 is also provided with multiple sets of metal arc-shaped strips 6 located in the opening of the expansion section 5. The opening of the expansion section 5 is provided with clamps 7 to bind and fix the multiple sets of arc-shaped strips 6 to the exhaust pipe 1. An operation opening 10 corresponding to the clamps 7 is provided on one side wall of the expansion section 5. Bolts 8 are also screwed onto the side wall of the expansion section 5 to lock and fix the corresponding arc-shaped strips 6 to the exhaust pipe 1.

[0021] The sleeve 2 is provided with an extension plate 9 extending into the opening of the exhaust pipe 1 at its end, and the extension plate 9 is provided with barbs that abut against the inner wall of the exhaust pipe 1.

[0022] An arc-shaped opening 10 is provided on the sleeve 2 near the exhaust pipe 1. A filter screen 11 is provided inside the arc-shaped opening 10 to divide the opening of the sleeve 2 into two parts. A screw tube 12 is screwed onto the sleeve 2 to seal the arc-shaped opening 10.

[0023] like Figure 1 , 2 The sleeve 2 has a magnetic limiting ring 13 that abuts against one end of the screw tube 12.

[0024] In this embodiment, the end face of the arc-shaped strip 6 that is in contact with the outer wall of the exhaust pipe 1 is provided with anti-slip texture. The anti-slip texture enhances the friction between the arc-shaped strip 6 and the exhaust pipe 1, reducing the probability of displacement.

[0025] like Figure 1 As shown, the expansion section 5 has a threaded hole on its side wall for screwing with the bolt 8, and the clamp 7 is located between the bolt 8 and the corresponding ends of the sleeve 2. The bolt 8 not only locks and fixes the arc-shaped strip 6, but also prevents the clamp 7 from shifting to the left on the arc-shaped strip 6 and slipping off its left end.

[0026] By fitting one end of the sleeve 2 onto the exhaust pipe 1, the sleeve 2 drives multiple sets of extension plates 9 to be inserted into the exhaust pipe 1. At the same time, clamps 7 are installed on multiple sets of arc-shaped strips 6. The clamps 7 are adjusted by inserting tools such as screwdrivers into the operating opening 14, so that the clamps 7 lock and fix the multiple sets of arc-shaped strips 6 onto the exhaust pipe 1. Then, bolts 8 are screwed into the screw holes on the side wall of the expansion section 5, and the ends of the arc-shaped strips 6 are further locked and fixed onto the exhaust pipe 1 by the bolts 8. This achieves the method of hooking the barbs on the inner wall of the exhaust pipe 1 and locking the arc-shaped strips 6 with the bolts 8 and clamps 7, so as to prevent the sleeve 2 from slipping off the end of the exhaust pipe 1, thereby improving the stability of the connection between them.

[0027] When the filter screen 11 needs to be replaced, simply rotate the screw tube 12 to separate it from the limiting ring 13 and open the arc-shaped opening 10. At this time, the filter screen 11 can be pulled out from the arc-shaped opening 10 and the opening of the sleeve 2 for cleaning or replacement. When the filter screen 11 is placed into the arc-shaped opening 10, simply rotate the screw tube 12 to move it and magnetically connect it with the limiting ring 13, and seal the arc-shaped opening 10 to prevent the filter screen 11 from sliding out of the arc-shaped opening 10. In this way, the replacement and maintenance of the filter screen 11 can be easily achieved. Furthermore, the large-area threaded connection between the screw tube 12 and the sleeve 2, and the magnetic connection between the limiting ring 13 and one end of the screw tube 12, make it difficult for the screw tube 12 to move on the sleeve 2 to open the arc-shaped opening 10 without human intervention, thereby effectively improving the safety of the filter screen 11.

[0028] The present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A vehicle exhaust gas monitoring device, comprising a sleeve fitted over a vehicle exhaust pipe, wherein an exhaust gas monitoring mechanism and a dustproof net are sequentially disposed within the opening at the end of the sleeve, characterized in that: A ring of expansion section is provided at the end of the sleeve on the same side as the exhaust pipe. The end of the sleeve is also provided with multiple sets of metal arc-shaped strips located in the opening of the expansion section. The opening of the expansion section is provided with clamps to bind and fix the multiple sets of arc-shaped strips to the exhaust pipe. Bolts are also screwed onto the side wall of the expansion section to lock and fix the corresponding arc-shaped strips to the exhaust pipe. The end of the sleeve is provided with an extension plate extending into the opening of the exhaust pipe. The extension plate is provided with barbs that abut against the inner wall of the exhaust pipe. An arc-shaped opening is provided on the sleeve near the exhaust pipe. A filter screen is installed inside the arc-shaped opening to divide the opening into two parts. A screw tube is screwed onto the sleeve to seal the arc-shaped opening.

2. The vehicle exhaust emission monitoring device according to claim 1, characterized in that: A magnetic limiting ring is arranged around the outer wall of the sleeve, which abuts against one end of the solenoid.

3. The vehicle exhaust emission monitoring device according to claim 1, characterized in that: The end face of the arc-shaped strip that is in contact with the outer wall of the exhaust pipe is provided with anti-slip texture.

4. The vehicle exhaust emission monitoring device according to claim 1, characterized in that: The expansion section has a threaded hole on its side wall for screwing with the bolt, and the clamp is located between the corresponding ends of the bolt and the sleeve.

5. The vehicle exhaust emission monitoring device according to claim 1, characterized in that: The expansion section has an operating opening for the corresponding clamp on one side wall.

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