A corrosion-resistant nitrogen and oxygen sensor

Abstract

The present application discloses a corrosion-resistant nitrogen and oxygen sensor, comprising a sensor probe provided with a threaded section, a nut and a detection end, and also comprising a shell cover, a rotating sleeve, a pair of air inlets, and brush wires. The rotating sleeve comprises a pair of semicircular shells, a pair of arc insert plates and a pair of arc slots. The rotating device comprises a pair of lifting chambers, a pair of lifting blocks, a plurality of floating springs and a pair of transmission members. The transmission member comprises an inclined groove, which is arranged on the outer wall of the semicircular shell; the transmission block is fixed on the inner wall of the lifting block and slides with the inclined groove. In daily use, by adopting the above technical solution, each filter can block the halide particles outside the detection end. The vibration generated when the vehicle is driving causes the pair of lifting blocks to cooperate with each floating spring to lift and reciprocate in the corresponding lifting chamber. Each transmission block slides with the corresponding inclined groove, driving each semicircular shell to rotate reciprocally around the detection end, so that each filter reciprocates through each brush wire, and the halide particles blocked on the filter are brushed off.

Description

Technical Field

[0001] The present invention relates to the field of sensors, in particular to a corrosion-resistant nitrogen and oxygen sensor. Background Art

[0002] A NOx sensor is a device used to measure nitrogen oxide (NOx) concentrations in the environment. It's typically installed at the head and tail ends of a vehicle's exhaust system. It monitors NOx concentrations in the vehicle's exhaust in real time and transmits this data to the ECU or DCU. The ECU or DCU analyzes and determines the data, then controls the operating status of systems like the injector and turbocharger to reduce NOx emissions. When a vehicle passes through areas containing halides (such as sodium chloride), halide particles may be present in the exhaust. These halide particles combine with moisture in the exhaust to form a solution containing chloride ions, which are highly corrosive. Conventional NOx sensors are exposed directly to the vehicle's exhaust system, exposing them to halide particles that aren't fully filtered by the vehicle's exhaust treatment system. This can cause corrosion in the sensor's metal components. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems existing in the prior art.

[0004] The present application provides a corrosion-resistant nitrogen and oxygen sensor, comprising a sensor probe having a threaded section, a nut, and a detection end, and further comprising:

[0005] A shell cover is fixed at the bottom of the threaded section and is arranged outside the detection end;

[0006] The rotating sleeve is arranged between the shell cover and the detection end, and filters are provided on the opposite sides;

[0007] A pair of air inlets are symmetrically arranged on the peripheral wall of the housing, with brushes on both sides of the inner ends;

[0008] The rotating device is used to control the rotation of the rotating sleeve so that the surface of each filter screen passes through the corresponding brush wire.

[0009] The rotating sleeve includes:

[0010] A pair of semicircular shells are movably connected to each other through a pair of arc plug plates and a pair of arc slots to form a circle;

[0011] The pair of semicircular shells, the pair of arc inserting plates and the pair of arc slots are all semicircular and concentric with the central axis of the detection end and the shell cover.

[0012] The rotating device includes:

[0013] A pair of lifting chambers are symmetrically arranged in the inner cavity of the shell;

[0014] A pair of lifting blocks are respectively installed in each lifting cavity for lifting and sliding;

[0015] A plurality of floating springs are respectively arranged at the top and bottom ends of each lifting block;

[0016] A pair of transmission members are used to connect a pair of lifting blocks to corresponding semicircular shells. When each lifting block is raised / lowered, the corresponding semicircular shell rotates clockwise / counterclockwise around the circumference of the detection end.

[0017] Transmission parts include:

[0018] An inclined groove is provided on the outer side wall of the semicircular shell;

[0019] The transmission block is fixed on the inner side wall of the lifting block and is slidably matched with the inclined groove.

[0020] Also includes:

[0021] A pair of sliding shells are fixed at one end of each lifting cavity, with the outer ends of the inner cavities open;

[0022] A pair of telescopic sliders are slidably mounted on the top of the inner cavity of each sliding shell;

[0023] A pair of transmission frames, each with a lifting sliding sleeve arranged on the outside of each sliding shell, are connected to the corresponding telescopic slider through a linkage mechanism, and a return spring is provided between the top bottom surface and the top of the sliding shell;

[0024] The rotary adjustment member is used to control the raising / lowering of a pair of transmission frames, so that a pair of telescopic slide blocks extend out of or retract into corresponding sliding shells.

[0025] Also includes:

[0026] A plurality of stop bars are symmetrically arranged on the inner walls on both sides of the top of the inner cavity of each sliding shell, and the top surface is in sliding contact with the corresponding telescopic slider;

[0027] A plurality of limiting transverse grooves are symmetrically arranged on the inner walls on both sides of the top end of the inner cavity of each sliding shell;

[0028] A plurality of limiting slide blocks are respectively slidably mounted in the limiting transverse grooves and fixedly connected to the inner ends of the side walls of the corresponding telescopic slide blocks.

[0029] The linkage agencies include:

[0030] a baffle fixedly arranged on the outer side of the bottom of the sliding shell;

[0031] A lifting frame is floatingly mounted on the bottom of the sliding shell via a lifting spring, and a swing arm is hinged between the outer end of the telescopic slider;

[0032] An outward push spring, which is arranged at the inner end of the telescopic slider;

[0033] The connecting piece is used to connect the lifting frame with the transmission frame.

[0034] Connectors include:

[0035] A pair of vertical grooves are symmetrically arranged at the bottom of the inner wall on opposite sides of the sliding shell;

[0036] A pair of lower grooves are symmetrically arranged on both side walls of the bottom of the transmission frame;

[0037] A pair of vertical sliding blocks are symmetrically fixed on opposite side walls of the lifting frame and slidably installed in corresponding vertical slots and corresponding lower slots.

[0038] The rotary adjustment includes:

[0039] a circular ring groove provided on the top surface of the nut;

[0040] A pair of connecting grooves connecting the annular groove and the pair of lifting chambers;

[0041] Hexagonal rotating ring, which is rotatably mounted on the top surface of the nut;

[0042] The guide ring is rotatably mounted in the ring groove and fixedly connected to the bottom surface of the hexagonal rotating ring;

[0043] Among them, the bottom surface of the guide ring is wavy, with a high section and a low section. The high section slides and rubs against the bottom surface of the annular groove. The upper end of each transmission frame passes through each connecting groove and extends into the annular groove to slide in contact with the bottom surface of the guide ring.

[0044] The rotary adjustment member also includes:

[0045] A pair of limiting arc grooves are symmetrically arranged on the top of the hexagonal dial ring;

[0046] A pair of limiting bolts are movable through corresponding limiting arc grooves and fixedly connected to the top ends of the nuts through screw holes.

[0047] The beneficial effects of the present invention are as follows:

[0048] 1. The system comprises a housing, a pair of filters, a pair of air inlets, a pair of semicircular shells, a pair of arc inserts, a pair of arc slots, a pair of lifting chambers, a pair of lifting blocks, a number of floating springs, a pair of chute slots, and a pair of transmission blocks. This system blocks halide particles from the detection end. Furthermore, during vehicle operation, vibration is used to clean the halide from the filter surface, effectively improving the corrosion resistance of the NOx sensor.

[0049] 2. Through the arrangement of a pair of sliding housings, a pair of telescopic sliders, a pair of transmission frames, a pair of return springs, a pair of linkage mechanisms, a plurality of shift bars, a plurality of limiting transverse grooves, a plurality of limiting sliders and a rotation adjustment member, the pair of telescopic sliders can be extended or retracted into the corresponding sliding housings to prevent the connection between the threaded section and the threaded hole on the vehicle exhaust pipe from loosening, thereby improving the installation stability of the nitrogen oxide sensor;

[0050] 3. Through the arrangement of the baffle, lifting frame, jacking spring, swing arm, push-out spring, a pair of vertical slots, a pair of lower slots and a pair of vertical slides, the nitrogen oxide sensor can be installed without the need for a slot-shaped rotating adjustment piece, so that the pair of telescopic slides can be automatically retracted into the corresponding sliding shells. When each telescopic slide enters the vehicle exhaust duct, each telescopic slide will automatically extend, and the top surface will abut against the inner wall of the vehicle exhaust duct, thereby improving the convenience of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a front view of a corrosion-resistant nitrogen and oxygen sensor according to an embodiment of the present application;

[0052] Figure 2 for Figure 1 Schematic diagram of the cross-section structure in the AA direction;

[0053] Figure 3 for Figure 2 Schematic diagram of the partially enlarged structure at point B in the middle

[0054] Figure 4 for Figure 2 Schematic diagram of the cross-section structure in the CC direction;

[0055] Figure 5 for Figure 2 Schematic diagram of the cross-section structure in the middle DD direction;

[0056] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure in the EE direction.

[0057] Reference numerals

[0058] 1-sensor probe, 11-threaded segment, 12-nut, 13-detection end, 2-shell cover, 3-rotating sleeve, 31-semicircular shell, 32-arc plug plate, 33-arc slot, 4-filter, 5-air inlet, 6-brush wire, 7-rotating device, 71-lifting chamber, 72-lifting block, 73-floating spring, 74-transmission part, 741-chute, 742-transmission block, 81-sliding shell, 82-telescopic slider, 83-transmission frame, 84-linkage mechanism, 841-baffle , 842-lifting frame, 843-lifting spring, 844-swing arm, 845-push spring, 85-reset spring, 86-rotation adjustment part, 861-circular ring groove, 862-connecting groove, 863-hexagonal dial ring, 864-guide ring, 865-high section, 866-low section, 867-limiting arc groove, 868-limiting bolt, 87-stop bar, 88-limiting horizontal groove, 89-limiting slider, 9-connecting part, 91-vertical groove, 92-vertical slider, 93-lower groove. DETAILED DESCRIPTION

[0059] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0060] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0061] The corrosion-resistant nitrogen and oxygen sensor provided in the embodiments of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0062] Example 1:

[0063] like Figures 1 to 6 As shown, an embodiment of the present application provides a corrosion-resistant nitrogen and oxygen sensor, including a sensor probe 1 provided with a threaded section 11, a nut 12 and a detection end 13, and also including a shell cover 2, which is fixedly arranged at the bottom of the threaded section 11 and the cover is arranged on the outside of the detection end 13; a rotating sleeve 3, wherein the rotating sleeve 3 is arranged between the shell cover 2 and the detection end 13, and filters 4 are provided on opposite sides; a pair of air inlets 5, symmetrically arranged on the peripheral wall of the shell cover 2, and brushes 6 are provided on both sides of the inner end; a rotating device 7, which is used to control the rotation of the rotating sleeve 3 so that the surface of each filter 4 passes through the corresponding brush 6.

[0064] Furthermore, the rotating sleeve 3 includes a pair of semicircular shells 31, which are movably connected to each other through a pair of arc plug plates 32 and a pair of arc slots 33 to form a circle. The pair of semicircular shells 31, the pair of arc plug plates 32 and the pair of arc slots 33 are all semicircular and concentric with the central axis of the detection end 13 and the shell cover 2.

[0065] Furthermore, the rotating device 7 includes a pair of lifting chambers 71, which are symmetrically arranged in the inner cavity of the shell cover 2; a pair of lifting blocks 72, which are respectively installed in each lifting chamber 71 for lifting and sliding; a number of floating springs 73, which are respectively arranged at the top and bottom ends of each lifting block 72; a pair of transmission members 74, which are used to connect the pair of lifting blocks 72 with the corresponding semicircular shells 31 in a transmission manner. When each lifting block 72 rises / falls, the corresponding semicircular shell 31 rotates clockwise / counterclockwise around the circumference of the detection end 13.

[0066] Furthermore, the transmission member 74 includes an inclined groove 741 , which is provided on the outer side wall of the semicircular shell 31 ; and a transmission block 742 , which is fixed on the inner side wall of the lifting block 72 and slidably cooperates with the inclined groove 741 .

[0067] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the exhaust gas enters the rotating sleeve through the air inlet 5 and the filter 4, and contacts the detection end 13 of the sensor probe 1. The halide particles entrained in the exhaust gas are blocked by the filter 4 in the air inlet 5. The vibration generated during the vehicle's driving cooperates with the floating springs 73 to cause the pair of lifting blocks 72 to reciprocate in the corresponding lifting chamber 71. The corresponding transmission blocks 742 also rise and fall together with the lifting blocks 72 and slide in the corresponding inclined grooves 741. The corresponding inclined grooves 741 push the semicircular shells 31 to slide reciprocally around the detection end 13, so that each filter screen 4 passes through the adjacent brush wires 6, and the halide particles attached to the surface of each filter screen 4 are brushed off;

[0068] The lifting frequencies and amplitudes of the pair of lifting blocks 72 are different, the rotation frequencies and amplitudes of the pair of semicircular shells 31 are also different, and each arc insert plate 32 reciprocates and slides telescopically in the corresponding arc slot 33 .

[0069] Example 2:

[0070] like Figures 1 to 6 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, it also includes a pair of sliding shells 81, which are respectively fixed at one end of each lifting cavity 71, and the outer end of the inner cavity is open; a pair of telescopic sliders 82, which are respectively slidably installed on the top of the inner cavity of each sliding shell 81; a pair of transmission frames 83, which are respectively lifted and slidably sleeved on the outside of each sliding shell 81, and are all connected to the corresponding telescopic sliders 82 through a linkage mechanism 84, and a reset spring 85 is provided between the top and bottom surfaces and the top of the sliding shell 81; a rotary adjustment member 86, which is used to control the rise / fall of the pair of transmission frames 83, so that the pair of telescopic sliders 82 extend / retract into the corresponding sliding shell 81.

[0071] Furthermore, it also includes a number of stop bars 87, which are symmetrically arranged on the inner walls on both sides of the top of the inner cavity of each sliding shell 81, and the top surface is in sliding contact with the corresponding telescopic slider 82; a number of limiting transverse grooves 88, which are symmetrically arranged on the inner walls on both sides of the top of the inner cavity of each sliding shell 81; and a number of limiting sliders 89, which are slidably installed in each limiting transverse groove 88 and fixedly connected to the inner end of the side wall of the corresponding telescopic slider 82.

[0072] Furthermore, the linkage mechanism 84 includes a baffle 841, which is fixed to the outside of the bottom of the sliding shell 81; a lifting frame 842, which is floatingly installed on the bottom of the sliding shell 81 through a lifting spring 843, and a swing arm 844 is hinged between the outer end of the telescopic slider 82; an outward push spring 845, which is arranged at the inner end of the telescopic slider 82; and a connecting member 9, which is used to connect the lifting frame 842 with the transmission frame 83.

[0073] Furthermore, the connecting member 9 includes a pair of vertical grooves 91, which are symmetrically arranged at the bottom of the opposite inner walls of the sliding shell 81; a pair of lower grooves 93, which are symmetrically arranged on the two side walls of the bottom of the transmission frame 83; and a pair of vertical sliding blocks 92, which are symmetrically fixed on the opposite side walls of the lifting frame 842 and are slidably installed in the corresponding vertical grooves 91 and the corresponding lower grooves 93.

[0074] In this embodiment of the present application, due to the adoption of the above-mentioned structure, when installing the sensor probe 1, the detection end 13 is first inserted into the preset screw hole on the vehicle exhaust pipe, and the sensor probe 1 is lowered in the screw hole. The outer side walls of a pair of swing arms 844 contact the top of the screw hole during this process. As the sensor probe 1 continues to descend, each swing arm 844 is pushed to slide in the direction close to the detection end 13. The lower end of each swing arm 844 pushes each lifting frame 842 to descend, and each lifting spring 843 is compressed to store elastic potential energy. The upper end of each swing arm 844 pushes each telescopic slider 82 to slide into the corresponding sliding shell 81, and each outward pushing spring 845 is compressed. The compression is short, and each vertical slider 92 descends in the corresponding vertical slot 91 and lower slot 93, and each limiting slider 89 slides toward the inner end of the corresponding limiting transverse slot 88. Then, the sensor probe 1 is rotated, and the threaded section 11 is engaged with the screw hole preset on the vehicle exhaust pipe until each telescopic slider 82 descends below the screw hole. Each outward pushing spring 845 and each lifting spring 843 releases elastic potential energy, causing the lower end of each swing arm 844 to rise and the upper end to slide toward the outside of the sliding shell 81. Each telescopic slider 82 slides toward the outside of the corresponding sliding shell 81 until each limiting slider 89 slides to the outer end of the corresponding limiting transverse slot 88. At this time, each vertical slider 92 contacts the top of the corresponding lower slot 93.

[0075] When removing the sensor probe 1, rotate the rotary adjustment piece 86 to make a pair of lifting frames 842 descend, each return spring 85 is compressed and shortened to store elastic potential energy, each lower groove 93 descends, and each vertical slider 92 pushes the corresponding lifting frame 842 and the swing arm 844 to descend together. During the descending process of each swing arm 844, the outer wall contacts the top of the corresponding baffle 841. With this position as the fulcrum, pry each telescopic slider 82 into the corresponding sliding shell 81, and each lifting spring 843 and each outward push spring 845 are compressed and shortened until each telescopic slider 82 is completely retracted into the corresponding sliding shell 81. Then the sensor probe 1 can be rotated in the opposite direction, and the threaded section 11 cooperates with the screw hole until the threaded section 11 is disengaged from the screw hole, and the sensor probe 1 is removed.

[0076] Example 3:

[0077] like Figures 3 to 6 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the rotary adjustment member 86 includes an annular groove 861, which is arranged on the top surface of the nut 12; a pair of connecting grooves 862, connecting the annular groove 861 and a pair of lifting chambers 71; a hexagonal dial ring 863, which is rotatably mounted on the top surface of the nut 12; a guide ring 864, which is rotatably mounted in the annular groove 861 and is fixedly connected to the bottom surface of the hexagonal dial ring 863, and the bottom surface of the guide ring 864 is wavy, with a high section 865 and a low section 866, and the high section 865 slides and rubs with the bottom surface of the annular groove 861, and the upper end of each transmission frame 83 respectively passes through each connecting groove 862 and extends into the annular groove 861 and slides in contact with the bottom surface of the guide ring 864.

[0078] Furthermore, the rotation adjustment member 86 also includes a pair of limiting arc grooves 867, which are symmetrically arranged on the top of the hexagonal dial ring 863; a pair of limiting bolts 868, which move through the corresponding limiting arc grooves 867 and are fixed to the top of the nut 12 through screw holes.

[0079] In this embodiment of the present application, due to the adoption of the above-mentioned structure, during the installation of the sensor probe 1, the top of each lifting frame 842 contacts the low section 866 of the bottom surface of the guide ring 864. When the sensor probe 1 needs to be removed, the hexagonal dial ring 863 is rotated to rotate the guide ring 864 in the annular groove 861, and each low section 866 moves away from the corresponding lifting frame 842, and each high section 865 moves to contact the top of the lifting frame 842. During this process, each lifting frame 842 is pushed down, and each telescopic slider 82 is retracted into the corresponding sliding shell 81, thereby releasing the lock on the sensor probe 1 and allowing it to be removed.

[0080] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0081] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A corrosion-resistant nitrogen and oxygen sensor comprising a sensor probe (1) provided with a threaded section (11), a nut (12) and a detection end (13), characterized in that: Also includes: A shell cover (2) is fixed to the bottom of the threaded section (11) and covers the outside of the detection end (13); A rotating sleeve (3), wherein the rotating sleeve (3) is arranged between the housing (2) and the detection end (13), and filters (4) are provided on opposite sides; A pair of air inlets (5) are symmetrically arranged on the peripheral wall of the housing (2), and are provided with brushes (6) on both sides of the inner ends; A rotating device (7) for controlling the rotation of the rotating sleeve (3) so that the surface of each filter screen (4) passes through the corresponding brush wire (6); The rotating sleeve (3) comprises: A pair of semicircular shells (31) are movably connected to each other through a pair of arc insert plates (32) and a pair of arc slots (33) to form a circle; The pair of semicircular shells (31), the pair of arc insert plates (32) and the pair of arc slots (33) are all semicircular and concentric with the central axis of the detection end (13) and the shell cover (2); The rotating device (7) comprises: A pair of lifting chambers (71) symmetrically arranged in the inner cavity of the housing (2); A pair of lifting blocks (72) are respectively installed in the lifting chambers (71) in a lifting and sliding manner; A plurality of floating springs (73) are respectively arranged at the top and bottom ends of each lifting block (72); A pair of transmission members (74) for connecting the pair of lifting blocks (72) to the corresponding semicircular shells (31) in a transmission manner, so that when each lifting block (72) is raised / lowered, the corresponding semicircular shell (31) rotates clockwise / counterclockwise around the circumference of the detection end (13); The transmission member (74) comprises: An inclined groove (741) is provided on the outer side wall of the semicircular shell (31); The transmission block (742) is fixed on the inner side wall of the lifting block (72) and is slidably engaged with the inclined groove (741).

2. The corrosion-resistant nitrogen oxide sensor according to claim 1, characterized in that: Also includes: A pair of sliding shells (81) are respectively fixed at one end of each lifting cavity (71), with the outer ends of the inner cavities being open; A pair of telescopic sliders (82) are slidably mounted on the top of the inner cavity of each sliding shell (81); A pair of transmission frames (83), each of which is provided on the outside of each sliding shell (81) for lifting and sliding, and is connected to the corresponding telescopic slider (82) through a linkage mechanism (84), and a return spring (85) is provided between the top and bottom surfaces and the top of the sliding shell (81); The rotary regulating member (86) is used to control the raising / lowering of a pair of transmission frames (83) so as to extend or retract a pair of telescopic sliders (82) into corresponding sliding shells (81).

3. The corrosion-resistant nitrogen oxide sensor according to claim 2, characterized in that: Also includes: A plurality of stop bars (87) are symmetrically arranged on the inner walls on both sides of the top of the inner cavity of each sliding shell (81), and the top surface is in sliding contact with the corresponding telescopic slider (82); A plurality of limiting transverse grooves (88) are symmetrically arranged on the inner walls on both sides of the top end of the inner cavity of each sliding shell (81); A plurality of limiting sliders (89) are respectively slidably mounted in the limiting transverse grooves (88) and fixedly connected to the inner ends of the side walls of the corresponding telescopic sliders (82).

4. The corrosion-resistant nitrogen oxide sensor according to claim 3, characterized in that: The linkage mechanism (84) comprises: a baffle (841) fixedly mounted on the outer side of the bottom of the sliding shell (81); A lifting frame (842) is floatingly mounted on the bottom of the sliding housing (81) via a lifting spring (843) and is hingedly connected to the outer end of the telescopic slider (82) by a swing arm (844); An outward push spring (845) is provided at the inner end of the telescopic slider (82); A connecting member (9) is used to connect the lifting frame (842) to the transmission frame (83).

5. The corrosion-resistant nitrogen and oxygen sensor according to claim 4, characterized in that: The connecting member (9) comprises: A pair of vertical grooves (91) are symmetrically arranged at the bottom of the inner wall on opposite sides of the sliding shell (81); A pair of lower grooves (93) symmetrically arranged on two side walls of the bottom of the transmission frame (83); A pair of vertical sliders (92) are symmetrically fixed on opposite side walls of the lifting frame (842) and slidably mounted in corresponding vertical slots (91) and corresponding lower slots (93).

6. The corrosion-resistant nitrogen and oxygen sensor according to claim 2, characterized in that: The rotary adjustment member (86) comprises: a circular annular groove (861) provided on the top surface of the nut (12); a pair of communication grooves (862) connecting the annular groove (861) and the pair of lifting chambers (71); A hexagonal rotating ring (863) is rotatably mounted on the top surface of the nut (12); A guide ring (864) is rotatably mounted in the annular groove (861) and is fixedly connected to the bottom surface of the hexagonal rotating ring (863); The bottom surface of the guide ring (864) is wavy and has a high section (865) and a low section (866). The high section (865) slides and rubs against the bottom surface of the annular groove (861). The upper ends of the transmission frames (83) respectively pass through the connecting grooves (862) and extend into the annular groove (861) to slide and contact with the bottom surface of the guide ring (864).

7. The corrosion-resistant nitrogen oxide sensor according to claim 6, characterized in that: The rotary adjustment member (86) further includes: A pair of limiting arc grooves (867) are symmetrically arranged on the top of the hexagonal rotating ring (863); A pair of limiting bolts (868) are movable through corresponding limiting arc grooves (867) and fixedly connected to the top of the nut (12) through screw holes.

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