Oxygen sensor

Abstract

The utility model provides an oxygen sensor and belongs to the technical field of sensors. The problem that an existing oxygen sensor does not have the filtering function is solved. The oxygen sensor comprises an oxygen sensor body, the oxygen sensor body is connected with an external controller through a connecting line, the oxygen sensor body is detachably provided with an air inlet piece, one end of the air inlet piece extends into the oxygen sensor body, and the other end of the air inlet piece extends out of the oxygen sensor body. Air inlet holes are formed in the peripheral side of the air inlet piece, a filter screen is arranged at the bottom of the air inlet piece, a sliding piece is arranged on the oxygen sensor body, a connecting spring is arranged between the sliding piece and the oxygen sensor body, a plurality of balls capable of moving left and right are arranged on the oxygen sensor body, and a first clamping groove is formed in the air inlet piece. A second clamping groove is formed in the sliding piece. The filter has the advantage of good filtering effect.

Description

Technical Field

[0001] This utility model belongs to the field of sensor technology, and specifically relates to an oxygen sensor. Background Technology

[0002] Oxygen sensors are standard equipment in automobiles. They utilize ceramic sensing elements to measure the oxygen potential in the exhaust pipe and calculate the corresponding oxygen concentration based on chemical equilibrium principles. This allows for monitoring and controlling the air-fuel ratio to ensure product quality and compliance with exhaust emission standards. Oxygen sensors are widely used in atmosphere control of various coal-fired, oil-fired, and gas-fired furnaces. They are currently the best method for measuring combustion atmosphere, offering advantages such as simple structure, rapid response, easy maintenance, convenient use, and accurate measurement.

[0003] In actual use, harmful substances in diesel fuel precipitate on the electrode surface after combustion and affect its catalytic effect. Existing oxygen sensors do not have a certain filtering function, which allows solid particulate matter in the exhaust gas to enter the oxygen pump chamber and cause blockage. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing an oxygen sensor with a filter structure.

[0005] The objective of this utility model can be achieved through the following technical solution: An oxygen sensor includes an oxygen sensor body, which is connected to an external controller via a connecting wire. The oxygen sensor body is characterized by a detachable air inlet component, one end of which extends into the oxygen sensor body and the other end extends out of the oxygen sensor body. The air inlet component has several air inlet holes on its periphery for air intake. A filter screen for filtering gas is provided at the bottom of the air inlet component. A sliding member that can move up and down is provided on the oxygen sensor body relative to the air inlet component. A connecting spring is provided between the sliding member and the oxygen sensor body. The oxygen sensor body has several ball bearings that can move left and right. A first groove that mates with the ball bearings is provided on the air inlet component, and a second groove that mates with the ball bearings is provided on the sliding member.

[0006] In one of the aforementioned oxygen sensors, the upper end of the oxygen sensor body is provided with a fixing part for the sliding member to abut against.

[0007] In the aforementioned oxygen sensor, the air intake component has an internal cavity, and the air intake hole is square in shape and connected to the internal cavity of the air intake component.

[0008] Compared with existing technologies, this oxygen sensor filters the gas entering the oxygen sensor by installing a filter screen inside the air intake component, preventing damage to internal parts. Furthermore, the air intake component can be disassembled from the oxygen sensor, making it convenient for operators to replace and maintain it. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0011] In the diagram, 1. Oxygen sensor body; 2. Inlet component; 3. Inlet port; 4. Filter screen; 5. Sliding component; 6. Connecting spring; 7. Ball bearing; 8. Slot 1; 9. Slot 2; 10. Fixing part. Detailed Implementation

[0012] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0013] like Figure 1 , Figure 2 As shown, this oxygen sensor includes an oxygen sensor body 1, which is connected to an external controller via a connecting cable. The oxygen sensor body 1 is detachably equipped with an air inlet 2, one end of which extends into the oxygen sensor body and the other end extends out of the oxygen sensor body 1. The air inlet 2 has several air inlet holes 3 on its periphery for air intake. A filter screen 4 for filtering gas is provided at the bottom of the air inlet 2. A sliding member 5, which can move up and down, is provided on the oxygen sensor body 1 relative to the air inlet 2. A connecting spring 6 is provided between the sliding member 5 and the oxygen sensor body 1. The oxygen sensor body 1 has several ball bearings 7 that can move left and right. The air inlet 2 has a first groove 8 that mates with the ball bearings 7, and the sliding member 5 has a second groove 9 that mates with the ball bearings 7.

[0014] To elaborate further, when the intake component 2 is fixed to the oxygen sensor body 1, one end of the ball bearing 7 extends into the slot 8, and the other side of the ball bearing 7 abuts against the inner wall of the sliding component 5, thereby fixing the intake component 2. When it is necessary to disassemble the intake component 2, by moving the sliding component 5 downward, the slot 9 moves to the ball bearing 7, and one end of the ball bearing 7 can extend into the slot 9, thereby releasing the fixation of the intake component 2, making it convenient for the staff to remove the intake component 2 from the oxygen sensor body 1.

[0015] To elaborate further, the upper end of the oxygen sensor body 1 is provided with a fixing part 10 for the sliding member 5 to abut against.

[0016] To elaborate further, the air intake component 2 has an internal cavity, and the air intake hole 3 is square in shape and connected to the internal cavity of the air intake component 2.

[0017] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0018] Although this document frequently uses terms such as oxygen sensor body 1, air inlet 2, air inlet 3, filter 4, sliding part 5, connecting spring 6, ball bearing 7, slot one 8, slot two 9, and fixing part 10, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. An oxygen sensor, comprising an oxygen sensor body (1), wherein the oxygen sensor body (1) is connected to an external controller via a connecting cable, characterized in that, The oxygen sensor body (1) is detachably provided with an air inlet (2). One end of the air inlet (2) extends into the oxygen sensor body, and the other end of the air inlet (2) extends out of the oxygen sensor body (1). The air inlet (2) has several air inlets (3) on its periphery. The bottom of the air inlet (2) is provided with a filter screen (4) for filtering gas. The oxygen sensor body (1) is provided with a sliding member (5) that can move up and down relative to the air inlet (2). A connecting spring (6) is provided between the sliding member (5) and the oxygen sensor body (1). The oxygen sensor body (1) is provided with several balls (7) that can move left and right. The air inlet (2) is provided with a first groove (8) that cooperates with the balls (7). The sliding member (5) is provided with a second groove (9) that cooperates with the balls (7).

2. An oxygen sensor according to claim 1, characterized in that, The upper end of the oxygen sensor body (1) is provided with a fixing part (10) for the sliding member (5) to abut against.

3. An oxygen sensor according to claim 1, characterized in that, The air intake component (2) has an internal cavity, and the air intake hole (3) is square in shape and is connected to the internal cavity of the air intake component (2).

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