Oxygen sensor

Abstract

The utility model relates to an oxygen sensor and belongs to the technical field of oxygen sensors. Comprising a fixing sleeve, an oxygen detection element, a dustproof sleeve, a first dustproof net, an annular shielding plate and a fixing mechanism, an air inlet hole is formed in the dustproof sleeve, the first dustproof net is arranged on the outer side of the air inlet hole, a first annular groove is formed in the dustproof sleeve, and a second annular groove is formed in the dustproof sleeve and located at one end of the first annular groove. An annular baffle plate is rotatably mounted in the second annular groove, one end of the annular baffle plate extends into the first annular groove, an opening is formed in the annular baffle plate, and an air suction mechanism is further arranged at one end of the fixing sleeve. The dustproof net can block dust and reduce dust entering, during detection, the annular shielding plate is rotated, the annular shielding plate can prevent dust from entering or accidentally damaging the probe, meanwhile, when dust on the dustproof net is cleaned, the air inlet hole is shielded, dust is prevented from entering in the cleaning process, and the detection effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen sensors, and in particular relates to an oxygen sensor. Background Art

[0002] An oxygen sensor is a detection device, usually composed of a sensor body and a detection probe. It is mainly used to measure the oxygen gas concentration in the environment. It uses ceramic sensitive elements to measure the oxygen potential in the environment and calculates the corresponding oxygen concentration based on the principle of chemical equilibrium. Oxygen sensors are widely used in coal mines, steel, petrochemicals, and medical applications.

[0003] At present, when oxygen sensors are used in coal mines, steel, petrochemicals, medical and other industries, there is a lot of dust in some monitoring environments. The dust easily enters the detection probe, affecting the oxygen content detection element, and the air flow is slow, affecting the detection effect, which is not conducive to use. Therefore, the utility model proposes an oxygen sensor to solve the above problems. Summary of the invention

[0004] In order to overcome the problems mentioned in the background technology, the utility model provides an oxygen sensor. The utility model protects the probe, reduces dust intrusion, and improves the detection effect.

[0005] To achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: an oxygen sensor includes a fixed sleeve 1, an oxygen detection element 2, a dust cover 3, a first dustproof net 4, an annular baffle plate 5 and a fixing mechanism 6, the oxygen detection element 2 is installed in the fixed sleeve 1, the dust cover 3 is installed at one end of the fixed sleeve 1, the dust cover 3 is provided with an air inlet 7, the outside of the air inlet 7 is provided with a first dustproof net 4, the dust cover 3 is provided with a first annular groove 8, the dust cover 3 is provided with a second annular groove 9 in the dust cover 3 and located at one end of the first annular groove 8, an annular baffle plate 5 is rotatably installed in the second annular groove 9, and one end of the annular baffle plate 5 extends into the first annular groove 8, the annular baffle plate 5 is provided with an opening 10, and one end of the fixed sleeve 1 is also provided with an air suction mechanism.

[0006] Furthermore, the fixing mechanism 6 includes a fixing ring 11, a circular hole 12, a fixing hole 13, a spring 14 and a fixing button 15. The fixing ring 11 is installed on the annular baffle plate 5 and is located outside the dust cover 3. The dust cover 3 is provided with a circular hole 12. A spring 14 is installed in the circular hole 12. The fixing button 15 is installed on the spring 14. The fixing ring 11 is provided with multiple fixing holes 13.

[0007] Furthermore, the air suction mechanism is a suction fan 17 , and an air suction hole 16 is provided at one end of the fixing sleeve 1 , and the suction fan 17 is installed in the air suction hole 16 .

[0008] Furthermore, a second dustproof net 18 is provided outside the air suction hole 16 .

[0009] Furthermore, the fixing sleeve 1 is provided with an internal thread, the dust cover 3 is provided with an external thread, and the fixing sleeve 1 is threadably connected to the dust cover 3 .

[0010] Furthermore, the oxygen sensor comprises a detection plate 19, the oxygen detection element 2 is mounted on the detection plate 19, a connecting plate 20 is mounted on one end of the fixing sleeve 1, and screw holes 21 are correspondingly provided on the connecting plate 20 and the detection plate 19.

[0011] Beneficial effects of the utility model:

[0012] During the detection of oxygen content, the utility model uses a dustproof net to block dust. During detection, the opening on the annular shielding plate is rotated to above the air inlet, and the position of the annular shielding plate is fixed by a fixing mechanism. Air enters the dustproof cover, and the oxygen detection element can detect the oxygen content. After the detection, the annular shielding plate is rotated again to cover the air inlet, which can protect the oxygen detection element and prevent dust from entering or accidentally damaging the probe. When cleaning the dust on the dustproof net, the air inlet is also covered to prevent dust from entering during the cleaning process. At the same time, a suction fan is provided on the fixing cover to speed up the air flow, so that the oxygen detection element can quickly detect the oxygen content and its changes, thereby improving the detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] Figure 2 It is a schematic cross-sectional view of the internal structure of the utility model.

[0015] Figure 3 It is a schematic cross-sectional view of the internal structure of the utility model.

[0016] Figure numerals: fixing sleeve 1, oxygen detection element 2, dust cover 3, first dustproof net 4, annular shielding plate 5, fixing mechanism 6, air inlet 7, first annular groove 8, second annular groove 9, opening 10, fixing ring 11, round hole 12, fixing hole 13, spring 14, fixing button 15, air suction hole 16, suction fan 17, second dustproof net 18, detection plate 19, connecting plate 20, screw hole 21, air inlet fixing hole 22, shielding fixing hole 23. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.

[0018] like Figure 1-3 The utility model discloses an oxygen sensor, which comprises a fixing sleeve 1, an oxygen detection element 2, a dust cover 3, a first dustproof net 4, an annular shielding plate 5 and a fixing mechanism 6. The oxygen detection element 2 is installed in the fixing sleeve 1, the dust cover 3 is installed at one end of the fixing sleeve 1, an air inlet 7 is provided on the dust cover 3, a first dustproof net 4 is provided on the outer side of the air inlet 7, a first annular groove 8 is provided on the dust cover 3, a second annular groove 9 is provided in the dust cover 3 and at one end of the first annular groove 8, an annular shielding plate 5 is rotatably installed in the second annular groove 9, and one end of the annular shielding plate 5 extends into the first annular groove 8, and an opening 10 is provided on the annular shielding plate 5 , one end of the fixed sleeve 1 is also provided with an air suction mechanism; the air inlet holes are arranged on the dust cover at intervals, and the openings are arranged on the annular shielding plate at intervals, and the number of the openings is the same as that of the air inlet holes. During the detection of oxygen content, the dustproof net can block dust and reduce dust entry. During the detection, the annular shielding plate is rotated, and the opening on the annular shielding plate is rotated to above the air inlet hole. The position of the annular shielding plate is fixed by the fixing mechanism, and air enters the dust cover. The oxygen detection element can detect the oxygen content. After the detection, the annular shielding plate is rotated again to block the air inlet hole, which can protect the oxygen detection element and prevent dust from entering or accidentally damaging the probe. At the same time, when cleaning the dust on the dustproof net, the air inlet hole will also be blocked to prevent dust from entering during the cleaning process, thereby improving the detection effect.

[0019] The fixing mechanism 6 includes a fixing ring 11, a circular hole 12, a fixing hole 13, a spring 14 and a fixing button 15. The fixing ring 11 is installed on the annular baffle plate 5 and is located outside the dust cover 3. The dust cover 3 is provided with a circular hole 12, and a spring 14 is installed in the circular hole 12. The fixing button 15 is installed on the spring 14. The fixing ring 11 is provided with a plurality of fixing holes 13; there are two fixing holes, including an air inlet fixing hole 22 and a shielding fixing hole 23. During detection, the fixing button is pressed and the fixing ring is rotated. When the air inlet fixing hole is aligned with the circular hole, the fixing button extends to the outside of the air inlet fixing hole under the elastic force of the spring, and the annular baffle plate can be fixed so that the opening is aligned with the air inlet hole for easy detection. After the detection is completed, the fixing button is pressed and the fixing ring is rotated. When the shielding fixing hole is aligned with the circular hole, the fixing button extends to the outside of the shielding fixing hole under the elastic force of the spring, and the annular baffle plate can be fixed so that the annular baffle plate blocks the air inlet hole to prevent dust from entering.

[0020] The suction mechanism is a suction fan 17, and a suction hole 16 is provided at one end of the fixed sleeve 1, and the suction fan 17 is installed in the suction hole 16; the suction fan can speed up the air flow and allow the air to quickly enter the dust cover, which is convenient for the oxygen detection element to detect, so that the oxygen detection element can quickly detect the oxygen content and its changes, thereby improving the detection effect; the suction fan and the oxygen detection element are connected to the processor in the sensor body through a signal line to realize signal transmission and power supply.

[0021] A second dustproof net 18 is disposed outside the air suction hole 16 to prevent dust from entering through the air suction hole.

[0022] The fixing sleeve 1 is provided with an internal thread, the dust cover 3 is provided with an external thread, and the fixing sleeve 1 is threadedly connected with the dust cover 3; the threaded connection facilitates the disassembly and assembly of the dust cover, the maintenance of the sensor or the replacement of the dust cover.

[0023] The oxygen sensor includes a detection plate 19, the oxygen detection element 2 is installed on the detection plate 19, a connecting plate 20 is installed at one end of the fixing sleeve 1, and screw holes 21 are correspondingly provided on the connecting plate 20 and the detection plate 19; the connecting plate and the detection plate can be fixed by bolts, which is convenient for disassembly and replacement.

[0024] Working process:

[0025] The working principle of the utility model is as follows: during detection, the fixing button 15 is pressed, and the fixing ring 11 is rotated, that is, the annular shielding plate 5 is rotated. When the air inlet fixing hole 22 is aligned with the circular hole 12, the fixing button 15 is extended to the outside of the air inlet fixing hole 22 under the elastic force of the spring 14, and the annular shielding plate 5 can be fixed, so that the opening 10 is aligned with the air inlet hole 7, which is convenient for detection. Air enters the dust cover 3, and the oxygen detection element 2 can detect the oxygen content. At the same time, the first dustproof net 4 can prevent dust from entering. After the detection is completed, the fixing button 15 is pressed and the fixing ring 11 is rotated again. The fixing ring 11 is moved. When the shielding fixing hole 23 is aligned with the circular hole 12, the fixing button 15 extends to the outside of the shielding fixing hole 23 under the elastic force of the spring 14, and the annular shielding plate 5 can be fixed, so that the annular shielding plate 5 can shield the air inlet 7 to prevent dust from entering. The fixing sleeve 1 is provided with a suction fan 17 to accelerate the air flow. When detecting, the suction fan 17 is turned on to allow air to quickly enter the dustproof 3, which is convenient for the oxygen detection element 2 to detect, so that the oxygen detection element 2 can quickly detect the oxygen content and its changes, thereby improving the detection effect.

[0026] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. An oxygen sensor, characterized in that: The oxygen sensor comprises a fixing sleeve (1), an oxygen detection element (2), a dust cover (3), a first dustproof net (4), an annular baffle plate (5) and a fixing mechanism (6), wherein the oxygen detection element (2) is mounted in the fixing sleeve (1), the dust cover (3) is mounted at one end of the fixing sleeve (1), an air inlet hole (7) is provided on the dust cover (3), a first dustproof net (4) is provided outside the air inlet hole (7), a first annular groove (8) is provided on the dust cover (3), a second annular groove (9) is provided in the dust cover (3) and located at one end of the first annular groove (8), an annular baffle plate (5) is rotatably mounted in the second annular groove (9), and one end of the annular baffle plate (5) extends into the first annular groove (8), an opening (10) is provided on the annular baffle plate (5), and an air suction mechanism is also provided at one end of the fixing sleeve (1).

2. An oxygen sensor according to claim 1, characterized in that: The fixing mechanism (6) comprises a fixing ring (11), a circular hole (12), a fixing hole (13), a spring (14) and a fixing button (15); the fixing ring (11) is mounted on the annular shielding plate (5) and is located outside the dust cover (3); the dust cover (3) is provided with a circular hole (12); a spring (14) is installed in the circular hole (12); the fixing button (15) is mounted on the spring (14); and the fixing ring (11) is provided with a plurality of fixing holes (13).

3. An oxygen sensor according to claim 2, characterized in that: The air suction mechanism is a suction fan (17), one end of the fixing sleeve (1) is provided with an air suction hole (16), and the air suction fan (17) is installed in the air suction hole (16).

4. An oxygen sensor according to claim 3, characterized in that: A second dustproof net (18) is provided on the outside of the air suction hole (16).

5. An oxygen sensor according to claim 1, characterized in that: The fixing sleeve (1) is provided with an internal thread, the dustproof sleeve (3) is provided with an external thread, and the fixing sleeve (1) and the dustproof sleeve (3) are threadedly connected.

6. An oxygen sensor according to claim 1, characterized in that: The oxygen sensor comprises a detection plate (19), the oxygen detection element (2) is mounted on the detection plate (19), a connecting plate (20) is mounted on one end of the fixing sleeve (1), and screw holes (21) are correspondingly provided on the connecting plate (20) and the detection plate (19).

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