Tail gas detection equipment

Abstract

The utility model discloses tail gas detection equipment. The tail gas detection equipment comprises a connecting pipe, a three-way valve, a detection box and a detector, one end of the connecting pipe is connected with a tail gas emission end, and the other end is connected with an inlet end of the three-way valve; one outlet end of the three-way valve is connected with the detection box, and the other outlet end of the three-way valve is in empty connection; the detection box comprises a box body and an exhaust plate, the bottom surface of the box body is connected with the three-way valve, and the exhaust plate is vertically mounted on the inner wall of the box body in a sliding manner; the detector is installed on the inner wall of the box body and used for detecting gas on the lower side of the exhaust plate. In the tail gas collection process, the exhaust plate is pushed by tail gas for collection, so that other gases can be effectively prevented from being doped in the tail gas for detection, the accuracy of a tail gas detection result is greatly improved, and the tail gas collection device has the characteristics of simple structure and convenience in operation.

Description

Technical Field

[0001] The utility model relates to the field of exhaust gas detection, in particular to an exhaust gas detection device. Background Art

[0002] Exhaust gas detection includes visual inspection method, instrument detection method and automated detection method. The visual inspection method is applicable to the preliminary inspection of low-emission vehicles. By observing the smoke situation, color of the exhaust pipe and whether there are abnormal noises, etc., it can be preliminarily judged whether there is a problem of excessive exhaust gas in the vehicle. The instrument detection method includes a smokemeter, a gas analyzer, etc., which are used to measure various gas components in the automobile exhaust to judge whether the emission level of the vehicle exceeds the standard. The automated detection method uses technical means such as sensors and image recognition to monitor and warn the emission situation of the vehicle in real time, greatly improving the accuracy and efficiency of detection.

[0003] At present, during the detection process of automobile exhaust gas detection equipment, it is easy to mix air components, resulting in deviation in the exhaust gas detection results, and there are certain defects. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an exhaust gas detection device to reduce the deviation caused by air components to the exhaust gas detection results and improve the accuracy of the exhaust gas detection results.

[0005] To solve the above technical problems, the utility model provides an exhaust gas detection device, which includes a connecting pipe, a three-way valve, a detection box and a detector;

[0006] One end of the connecting pipe is connected to the exhaust gas discharge end, and the other end is connected to the inlet end of the three-way valve;

[0007] One outlet end of the three-way valve is connected to the detection box, and the other outlet end of the three-way valve is left open;

[0008] The detection box includes a box body and an exhaust plate. The bottom surface of the box body is connected to the three-way valve, and the exhaust plate is vertically and slidably installed on the inner wall of the box body;

[0009] The detector is installed on the inner wall of the box body, and the detector is used to detect the gas on the lower side of the exhaust plate.

[0010] Further, a connecting sleeve is provided at one end of the connecting pipe away from the three-way valve, and the connecting sleeve is in the shape of a frustum of a cone.

[0011] Further, the connecting sleeve and the connecting pipe are integrally formed.

[0012] Further, an exhaust hole is opened on the top surface of the box body.

[0013] Further, positioning bars are vertically arranged on the inner wall of the box body, and positioning grooves matching the positioning bars are arranged at the edge of the exhaust plate.

[0014] Further, the exhaust plate is attached to and in sliding contact with the inner wall of the box body.

[0015] Further, the detector includes a detection sensor, a controller, and a display module;

[0016] The detection sensor is installed on the side wall of the box body, and the detection end of the detection sensor is located at the bottom end inside the box body;

[0017] The input end and the output end of the controller are respectively connected to the detection sensor and the display module;

[0018] The display module is used to display the exhaust gas detection result.

[0019] Further, the detection sensor includes at least an oxygen sensor and a nitrogen oxide sensor.

[0020] Compared with the prior art, the utility model has at least the following beneficial effects:

[0021] During the exhaust gas collection process of the utility model, the exhaust plate is pushed by the exhaust gas for collection, which can effectively avoid other gases being doped in the exhaust gas for detection, greatly improving the accuracy of the exhaust gas detection result, and has the characteristics of simple structure and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the exhaust gas detection device of the utility model;

[0023] Figure 2 is a schematic diagram of the cross-sectional structure of the box body of the exhaust gas detection device of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The exhaust gas detection device of the utility model will be described in more detail below with reference to the schematic diagrams, in which the preferred embodiments of the utility model are shown. It should be understood that those skilled in the art can modify the utility model described herein while still achieving the beneficial effects of the utility model. Therefore, the following description should be understood as a broad guidance for those skilled in the art and not as a limitation to the utility model.

[0025] The utility model will be described more specifically below by way of example with reference to the accompanying drawings. The advantages and features of the utility model will be clearer according to the following description and the claims. It should be noted that the drawings are all in a very simplified form and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the embodiments of the utility model.

[0026] As Figure 1 and Figure 2 shown, an embodiment of the present utility model provides an exhaust gas detection device, including a connecting pipe 1, a three-way valve 2, a detection box and a detector.

[0027] Specifically, one end of the connecting pipe 1 is connected to the exhaust gas discharge end, and the other end is connected to the inlet end of the three-way valve 2.

[0028] One outlet end of the three-way valve 2 is connected to the detection box, and the other outlet end of the three-way valve 2 is left open.

[0029] The detection box includes a box body 3 and an exhaust plate 4. The bottom surface of the box body 3 is connected to the three-way valve 2, and the exhaust plate 4 is vertically and slidably installed on the inner wall of the box body 3.

[0030] The detector is installed on the inner wall of the box body 3, and the detector is used to detect the gas below the exhaust plate 4.

[0031] When performing exhaust gas detection, first, connect the connecting pipe 1 to the exhaust gas discharge end. When discharging exhaust gas, the air in the connecting pipe 1 and the three-way valve 2 is discharged from the outlet end of the three-way valve 2. Then, change the output through the three-way valve 2 so that the exhaust gas enters the box body 3. The exhaust gas pushes up the exhaust plate 4, and the exhaust gas is distributed in the part below the exhaust plate 4. Finally, the detector detects and displays the exhaust gas in the box body 3, completing the exhaust gas detection. During this process, the air in the connecting pipe 1, the three-way valve 2 and the bottom surface part of the box body 3 is exhausted, which can effectively reduce the influence of air components on the exhaust gas detection result and greatly improve the accuracy of the exhaust gas detection result.

[0032] In a specific embodiment, a connecting sleeve is provided at one end of the connecting pipe 1 away from the three-way valve 2. The connecting sleeve is in the shape of a frustum of a cone, and the connecting sleeve is integrally formed with the connecting pipe 1. When connecting the connecting pipe 1 to the exhaust end of the exhaust gas device, the connecting sleeve can be directly sleeved on the exhaust end, realizing the quick connection between the connecting pipe 1 and the exhaust gas device.

[0033] In addition, an exhaust hole 5 is opened on the top surface of the box body 3. During the process of the exhaust gas entering the box body 3, when the exhaust plate 4 moves upward, the gas above the exhaust plate 4 is discharged from the exhaust hole 5, ensuring that the exhaust gas can smoothly enter the box body 3. After the exhaust gas detection is completed, the exhaust plate 4 slides down under the action of gravity, and the exhaust plate 4 discharges the exhaust gas at the bottom of the box body 3, preparing for the next exhaust gas detection.

[0034] Furthermore, positioning strips 6 are vertically arranged on the inner wall of the box body 3, and positioning grooves 7 matching the positioning strips 6 are arranged at the edge of the exhaust plate 4.

[0035] Specifically, the exhaust plate 4 is in close contact with and slidably contacts the inner wall of the box body 3. When the exhaust plate 4 is lifted by the exhaust gas or slides down under the action of gravity, the exhaust plate 4 moves along the length direction of the positioning strip 6, realizing the collection of the exhaust gas and the discharge of the exhaust gas after the exhaust gas detection, and ensuring the accuracy of the exhaust gas detection result.

[0036] In addition, the exhaust plate 4 is in close contact with and slidably contacts the inner wall of the box body 3, and there is a good dynamic sealing effect between the exhaust plate 4 and the inner wall of the box body 3, thereby avoiding the doping of air components into the exhaust gas and ensuring the accuracy of the detection result.

[0037] Furthermore, the detector includes a detection sensor 8, a controller 9, and a display module 10.

[0038] Specifically, the detection sensor 8 is installed on the side wall of the box body 3, and the detection end of the detection sensor 8 is located at the bottom end inside the box body 3.

[0039] The input end and the output end of the controller 9 are respectively connected to the detection sensor 8 and the display module 10.

[0040] The display module 10 is used to display the exhaust gas detection result.

[0041] In this embodiment, the detection sensor 8 at least includes an oxygen sensor and a nitrogen oxide sensor. The detection sensor 8 detects the exhaust gas collected in the box body 3. After the gas detection information is transmitted to the controller 9, the controller 9 drives the display module 10 to display, and the gas detection result can be quickly obtained.

[0042] It should be noted that the gas detection collects the gas detection information through the detection sensor 8, and after being processed by the controller 9, it is displayed on the display module 10, which belongs to the prior art, and its specific circuit structure and control method will not be elaborated here.

[0043] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0044] In the process of collecting the exhaust gas, the present utility model collects the exhaust gas by pushing the exhaust plate with the exhaust gas, which can effectively avoid the doping of other gases in the exhaust gas for detection, greatly improve the accuracy of the exhaust gas detection result, and has the characteristics of simple structure and convenient operation.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these changes and modifications.

Claims

1. An exhaust gas detection device, characterized in that: It includes a connecting pipe, a three-way valve, a detection box and a detector; One end of the connecting pipe is connected to the tail gas discharge end, and the other end is connected to the inlet end of the three-way valve; One outlet end of the three-way valve is connected to the detection box, and the other outlet end of the three-way valve is vacant; The detection box includes a box body and an exhaust plate, the bottom surface of the box body is connected to the three-way valve, and the exhaust plate is vertically slidably mounted on the inner wall of the box body; The detector is installed on the inner wall of the box body, and the detector is used to detect the gas on the lower side of the exhaust plate.

2. The exhaust gas detection device according to claim 1, characterized in that: A connecting sleeve is arranged at one end of the connecting pipe away from the three-way valve, and the connecting sleeve is in a frustum shape.

3. The exhaust gas detection device according to claim 2, characterized in that: The connecting sleeve and the connecting pipe are integrally formed.

4. The exhaust gas detection device according to claim 1, characterized in that: An exhaust hole is arranged on the top surface of the box body.

5. The exhaust gas detection device according to claim 1, characterized in that: A positioning strip is vertically arranged on the inner wall of the box body, and a positioning groove matching the positioning strip is arranged at the edge of the exhaust plate.

6. The exhaust gas detection device according to claim 1, characterized in that: The exhaust plate is in close contact with the inner wall of the box body and in sliding contact.

7. The exhaust gas detection device according to claim 1, characterized in that: The detector includes a detection sensor, a controller and a display module; The detection sensor is installed on the side wall of the box, and the detection end of the detection sensor is located at the bottom end of the box; The input end and the output end of the controller are connected to the detection sensor and the display module respectively; The display module is used to display the exhaust gas detection result.

8. The exhaust gas detection device according to claim 7, characterized in that: The detection sensor includes at least an oxygen sensor and a nitrogen oxygen sensor.

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