Nitrogen-oxygen sensor convenient to clean

Abstract

A nitrogen-oxygen sensor convenient to clean comprises a nitrogen-oxygen sensor body and a cleaning connector, the nitrogen-oxygen sensor comprises a zirconium pipe and a shell, a zirconium pipe protection cover is arranged at the front end of the shell, the zirconium pipe protection cover is rotatably connected to the front end of the shell, a plurality of air holes are formed in the zirconium pipe protection cover, and the zirconium pipe is arranged in the zirconium pipe protection cover. A first cleaning brush head is arranged on the inner wall of the zirconium pipe protection cover, and during cleaning, the surface of the zirconium pipe protection cover is sleeved with the cleaning connector, and the cleaning connector can drive the zirconium pipe protection cover to rotate. The method has the advantage that the zirconium pipe is difficult to clean by a traditional cleaning method. The nitrogen-oxygen sensor is used in cooperation with a cleaning connector, the zirconium pipe protection cover and the zirconium pipe can be cleaned at the same time, and the cleaning effect is better.

Description

Technical Field

[0001] The utility model relates to a nitrogen oxygen sensor, in particular to a nitrogen oxygen sensor which is easy to clean. Background Art

[0002] In the engine exhaust, toxic gases include nitrogen oxides. In order to detect and control the emission of nitrogen oxides, a nitrogen oxide sensor is usually installed in the exhaust pipe.

[0003] Automotive nitrogen oxide sensors are usually installed inside the car. During driving, the vehicle may be in a humid and dusty environment. The harsh environment and installation method will affect the performance of the nitrogen oxide sensor.

[0004] After long-term use, almost all nitrogen oxide sensors will have a lot of carbon deposits and other impurities attached to the surface, affecting the detection accuracy. At present, since cleaning nitrogen oxide sensors is time-consuming and labor-intensive, in most cases, the main maintenance method is replacement. Utility Model Content

[0005] In order to solve the above problems, a nitrogen oxide sensor that is easy to clean is specially made to facilitate cleaning and maintenance, greatly reduce the frequency of nitrogen oxide sensor replacement and reduce maintenance costs.

[0006] To achieve the above-mentioned purpose, the utility model is solved through the following technical solutions: a nitrogen oxygen sensor that is easy to clean, including a nitrogen oxygen sensor body and a cleaning joint, the nitrogen oxygen sensor including a zirconium tube and a shell, the front end of the shell is a zirconium tube protective cover, the zirconium tube protective cover is rotatably connected to the front end of the shell, a plurality of air holes are provided on the zirconium tube protective cover, the zirconium tube is arranged in the zirconium tube protective cover, a first cleaning brush head is provided on the inner wall of the zirconium tube protective cover, when cleaning, the cleaning joint is sleeved on the surface of the zirconium tube protective cover, and the cleaning joint can drive the zirconium tube protective cover to rotate.

[0007] Furthermore, the cleaning joint includes an outer fixed sleeve and an inner movable sleeve. The inner movable sleeve is arranged inside the outer fixed sleeve and the two are connected by a bearing. One end of the inner movable sleeve is a hexagonal hole, and the other end is connected to the zirconium tube protective cover.

[0008] Furthermore, a hexagonal concave hole is provided on the end surface of the zirconium tube protection cover, and a hexagonal convex column corresponding to the hexagonal concave hole is provided on the end surface of the side where the inner movable sleeve is connected to the zirconium tube protection cover.

[0009] Furthermore, a second cleaning brush head is provided on the inner wall of the outer fixing sleeve.

[0010] Furthermore, base bosses are provided on both sides of the first cleaning brush head in the width direction, and the bottom of the first cleaning brush head is fixed between the two base bosses.

[0011] Furthermore, the second cleaning brush head is a brush.

[0012] Furthermore, the first cleaning brush head is made of rubber, and its contact surface with the zirconium tube has a toothed structure.

[0013] The utility model is beneficial in that:

[0014] Traditional cleaning methods are difficult to clean zirconium tubes. The nitrogen oxide sensor is used with a cleaning connector to clean the zirconium tube protective cover and the zirconium tube at the same time, achieving a better cleaning effect.

[0015] The cleaning joint can be rotated by means of a manual tool or by means of an electric tool. The use of a handheld electric tool can save time and effort and quickly complete the cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a structural schematic diagram of a nitrogen oxygen sensor which is easy to clean.

[0017] Figure 2 The utility model is a schematic diagram of the cross-sectional structure of a cleaning joint in a nitrogen oxygen sensor which is easy to clean.

[0018] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of a zirconium tube protective sleeve in a nitrogen and oxygen sensor which is easy to clean.

[0019] Figure 4 The utility model is a schematic diagram of the internal structure of a zirconium tube protective sleeve in a nitrogen and oxygen sensor which is easy to clean.

[0020] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0021] Figure numerals: shell 1, zirconium tube protection cover 2, hexagonal recessed hole 3, air vent 4, inner movable sleeve 5, inner hexagonal hole 6, bearing 7, hexagonal protrusion 8, outer fixed sleeve 9, second cleaning brush head 10, first cleaning brush head 12, zirconium tube 13, base boss 14, toothed structure 15. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] A nitrogen oxygen sensor that is easy to clean includes a nitrogen oxygen sensor body and a cleaning joint. The nitrogen oxygen sensor includes a zirconium tube and a shell. The front end of the shell is a zirconium tube protective cover. The zirconium tube protective cover is rotatably connected to the front end of the shell. The zirconium tube protective cover is provided with a plurality of air holes. The zirconium tube is arranged in the zirconium tube protective cover. A first cleaning brush head is provided at the inner wall of the zirconium tube protective cover. When cleaning, the cleaning joint is sleeved on the surface of the zirconium tube protective cover, and the cleaning joint can drive the zirconium tube protective cover to rotate. The cleaning joint includes an outer fixed sleeve and an inner movable sleeve. The inner movable sleeve is sleeved in the outer fixed sleeve. The two are connected by a bearing. One end of the inner movable sleeve is an inner hexagonal hole, and the other end is connected to the zirconium tube protective cover. A hexagonal concave hole is provided on the end face of the zirconium tube protective cover. A hexagonal convex column corresponding to the hexagonal concave hole is provided on the end face of the inner movable sleeve on the side where the inner movable sleeve is connected to the zirconium tube protective cover. A second cleaning brush head is provided at the inner wall of the outer fixed sleeve. Base bosses are provided on both sides of the first cleaning brush head in the width direction, and the bottom of the first cleaning brush head is fixed between the two base bosses. The second cleaning brush head is a brush. The first cleaning brush head is made of rubber, and its contact surface with the zirconium tube has a toothed structure.

[0024] The actual usage process is as follows:

[0025] First, remove the nitrogen oxygen sensor body from the pipeline, and use a special cleaning liquid to spray the zirconium tube protective cover with high pressure. Then, immerse the zirconium tube protective cover in a special cleaning liquid (this step can be omitted as needed, and this step has a better cleaning effect). Then, plug the cleaning connector into the zirconium tube protective cover so that the hexagonal protrusions on the cleaning connector match the hexagonal recesses on the zirconium tube protective cover. Then, use a special tool to rotate the inner movable sleeve, which will drive the zirconium tube protective cover to rotate. At this time, the outer wall of the zirconium tube protective cover is cleaned by the second cleaning brush head on the outer fixed sleeve, and the surface of the zirconium tube is cleaned by the first cleaning brush head on the inner wall of the zirconium tube protective cover. During the cleaning process, the zirconium tube protective cover can be intermittently placed in a special cleaning liquid to clean and discharge the contaminants.

[0026] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A nitrogen oxygen sensor that is easy to clean, characterized in that: The invention comprises a nitrogen oxygen sensor body and a cleaning joint. The nitrogen oxygen sensor comprises a zirconium tube and a shell. The front end of the shell is a zirconium tube protective cover. The zirconium tube protective cover is rotatably connected to the front end of the shell. A plurality of air holes are arranged on the zirconium tube protective cover. The zirconium tube is arranged in the zirconium tube protective cover. A first cleaning brush head is arranged on the inner wall of the zirconium tube protective cover. When cleaning, the cleaning joint is sleeved on the surface of the zirconium tube protective cover. The cleaning joint can drive the zirconium tube protective cover to rotate.

2. The easy-to-clean nitrogen oxygen sensor according to claim 1, characterized in that: The cleaning joint comprises an outer fixed sleeve and an inner movable sleeve. The inner movable sleeve is arranged inside the outer fixed sleeve and the two are connected through a bearing. One end of the inner movable sleeve is an inner hexagonal hole, and the other end is connected to the zirconium tube protective cover.

3. The easy-to-clean nitrogen oxygen sensor according to claim 2, characterized in that: A hexagonal concave hole is arranged on the end surface of the zirconium tube protection cover, and a hexagonal convex column corresponding to the hexagonal concave hole is arranged on the end surface of the side where the inner movable sleeve is connected with the zirconium tube protection cover.

4. The easy-to-clean nitrogen oxygen sensor according to claim 3, characterized in that: A second cleaning brush head is arranged on the inner wall of the outer fixing sleeve.

5. The easy-to-clean nitrogen oxygen sensor according to claim 4, characterized in that: Base bosses are provided on both sides of the first cleaning brush head in the width direction, and the bottom of the first cleaning brush head is fixed between the two base bosses.

6. The easy-to-clean nitrogen oxygen sensor according to claim 5, characterized in that: The second cleaning brush head is a bristle brush.

7. The easy-to-clean nitrogen oxygen sensor according to claim 6, characterized in that: The first cleaning brush head is made of rubber, and its contact surface with the zirconium tube has a toothed structure.

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