Pipeline type photoelectric liquid level sensor

Abstract

The utility model discloses a pipeline type photoelectric liquid level sensor, which relates to the technical field of photoelectric liquid level sensors and comprises a mounting pipeline, a mounting seat movably connected to the outer side of the mounting pipeline, a mounting back plate clamped to the other side of the mounting seat, a protective shell in threaded connection with one side, far away from the mounting pipeline, of the mounting seat, and a PCB (printed circuit board) fixedly connected to the inside of the protective shell. Electronic connecting wires are symmetrically mounted at the bottom of the PCB at equal intervals, a controller is mounted at the other end of each electronic connecting wire, arc-shaped grooves are formed in the opposite ends of the mounting base and the mounting back plate, telescopic assemblies are symmetrically mounted in the arc-shaped grooves of the mounting base, and a clamping assembly is mounted on the side, away from the mounting base, of the mounting back plate. By the adoption of the structure, the pipeline fixing device can easily adapt to pipelines of different diameters and can be installed and used on pipeline systems of various sizes, special installation pieces do not need to be customized for the sizes of the pipelines, the purchase cost is reduced, and the installation process is simplified.

Description

TECHNICAL FIELD

[0001] The utility model belongs to photoelectric liquid level sensor technical field, especially relate to a pipeline type photoelectric liquid level sensor. BACKGROUND

[0002] The pipeline type photoelectric liquid level sensor is a sensor specially designed for detecting the change of liquid level in the pipeline. The working principle of the pipeline type photoelectric liquid level sensor is based on the optical principle, especially the different refractive indexes of infrared light in different media. The sensor contains infrared optical components inside, which are carefully designed as a sensing circuit. When the sensor is installed in the pipeline and in working condition, it will emit infrared light. When the interface between the liquid in the pipeline and the air changes, the reflection of infrared light will also change accordingly. The sensor can quickly and stably determine the current liquid level state by detecting the change of the reflection.

[0003] The utility model discloses a pipeline type photoelectric liquid level sensor, including installation pipeline, one side of installation pipeline is fixedly connected with installation shell, one side of the inside of installation shell is fixedly connected with optical board, the other side of the inside of installation shell is inserted with PCB board, one end of PCB board is fixedly connected with light emission adapter, the side of installation shell away from pipeline is fixedly connected with mounting plate, through fixed installation shell on installation pipeline, fixed cylinder on installation shell, utilize cylinder to drive moving plate to move, make moving plate drive wiping pad to move, wiping pad moves back and forth to wipe the mirror surface of light emitter and light receiver, ensure that the mirror surface is clean, can avoid the accumulation of dust, water film or chemical substance, ensure the normal propagation of light, thereby improve the accuracy of liquid level measurement, help sensor to work stably for a long time, reduce the frequency of maintenance and replacement, improve work efficiency, reduce maintenance cost.

[0004] The above-mentioned utility model can ensure the normal propagation of light, thereby improving the accuracy of liquid level measurement, helping the sensor to work stably for a long time, reducing the frequency of maintenance and replacement, improving work efficiency, and reducing maintenance cost. However, since the installation shell and the installation pipeline are fixedly connected, the installation shell is designed and manufactured according to the diameter of a specific installation pipeline, so it cannot be directly adapted to pipelines with different diameters. This leads to the need to replace the entire installation shell when replacing the sensor or applying it to pipelines with different diameters in actual application, increasing the cost and complexity. Moreover, due to the fixed connection between the installation shell and the installation pipeline, the sensor cannot adjust its position according to actual needs, which limits the flexibility and adaptability of the sensor in different application scenarios. UTILITY MODEL CONTENTS

[0005] In view of the problems mentioned in the background art, the utility model aims at providing a pipeline type photoelectric liquid level sensor to solve the problem that the installation shell is designed and manufactured according to the diameter of a specific installation pipeline, so it cannot be directly adapted to pipelines with different diameters, which leads to the problem that the entire installation shell needs to be replaced when the sensor needs to be replaced or applied to pipelines with different diameters, increasing the cost and complexity.

[0006] The above technical purpose of the utility model is achieved by the following technical scheme:

[0007] A pipeline type photoelectric liquid level sensor, comprising an installation pipeline, a mounting seat movably connected to the outside of the installation pipeline, a mounting back plate clamped to the other side of the mounting seat, a protective shell screw-connected to the side of the mounting seat away from the installation pipeline, a PCB board fixedly connected inside the protective shell, electronic connection wires symmetrically installed at equal distances on the bottom of the PCB board, a controller installed at the other end of the electronic connection wires, an arc-shaped groove formed in the opposite end of the mounting seat and the mounting back plate, a telescopic assembly symmetrically installed inside the arc-shaped groove of the mounting seat, and a clamping assembly installed on the side of the mounting back plate away from the mounting seat.

[0008] The clamping assembly comprises a rotating column, a threaded hole, a threaded rod, a driving gear, a driven gear, a handle, a rotating groove, and a limiting block, the rotating column is rotatably connected to the side of the mounting back plate in an embedded manner, the threaded hole is formed in one end of the rotating column and penetrates the rotating column and the mounting back plate, the threaded rod is screw-connected inside the threaded hole, one end of the threaded rod extends into the arc-shaped groove of the mounting back plate and is rotatably connected with an arc-shaped clamping seat, the other end of the threaded rod is fixedly connected with the limiting block, the driven gear is fixedly sleeved outside the rotating column, the rotating groove is formed in the side of the mounting back plate, the handle is rotatably connected inside the rotating groove, the driving gear is fixedly sleeved outside the wall of the handle, the driving gear is rotatably connected to the side of the mounting back plate, the driving gear and the driven gear are meshed with each other, and the limiting assembly is symmetrically installed inside the handle.

[0009] As a preferred technical scheme, the limiting assembly comprises a cavity, a second reset spring, a moving plate, a pressing block and a clamping block, the inside of the rotating handle is symmetrically provided with the cavity, one side of the inside of the cavity is symmetrically and fixedly connected with the second reset spring, the other end of the second reset spring is fixedly connected with the moving plate, the moving plate is slidably connected with the inside of the cavity, the side of the moving plate away from the second reset spring is fixedly connected with the pressing block and the clamping block respectively, the other side of the pressing block and the clamping block extends out of the outer wall of the rotating handle, the rotating groove is slidably connected with the rotating handle, the inner wall of the rotating groove and the inner wall of the driving gear are symmetrically provided with the clamping groove, the clamping block is clamped with the clamping groove, the side of the rotating handle close to the driving gear is symmetrically fixedly connected with the limiting column, one side of the driving gear is symmetrically provided with the limiting hole, the limiting column is inserted with the limiting hole, which can effectively prevent the threaded rod from loosening due to vibration or external force during long-term use, ensure the stability and reliability of the sensor, avoid measurement errors or failures caused by loosening, and can generate a larger clamping force to ensure that the sensor can be firmly fixed on the pipeline.

[0010] As a preferred technical scheme, the outer wall of the rotating handle is symmetrically provided with the guide groove through an annular circumferential array, the inner wall of the driving gear is symmetrically fixedly connected with the guide block through an annular circumferential array, and the guide block is slidably connected with the guide groove. The sliding fit of the guide block and the guide groove can ensure the stability and accuracy of the rotating handle during movement.

[0011] As a preferred technical scheme, the telescopic assembly comprises a mounting groove, a fixed seat, a first fixed column, a second fixed column, an embedded hole, a first reset spring and a connecting column, the inner wall of the arc-shaped groove of the mounting seat is symmetrically provided with the mounting groove, the inside of the arc-shaped groove of the mounting seat is symmetrically provided with the connecting column, the bottom of the mounting groove and one end of the connecting column are fixedly connected with the fixed seat, one side of the fixed seat in the mounting groove is fixedly connected with the first fixed column, the other end of the first fixed column is provided with the embedded hole, the bottom of the embedded hole is fixedly connected with the first reset spring, the other end of the first reset spring is fixedly connected with the second fixed column, the inside of the embedded hole is slidably connected with the second fixed column, the other end of the second fixed column is fixedly connected with the fixed seat on the connecting column, and the other end of the connecting column is fixedly connected with the arc-shaped clamping seat. The sensor can maintain a stable position and posture after installation, and even when the installed pipeline is subjected to external force or vibration, the sensor can maintain its stability through the elastic restoring force of the telescopic assembly, thereby ensuring the accuracy and reliability of the measurement results.

[0012] As a preferred technical scheme, the clamping end of the arc-shaped clamping seat is glued with a non-slip pad, the surface of the non-slip pad is provided with non-slip convex points, and the material of the non-slip pad is soft rubber. The friction between the arc-shaped clamping seat and the installed pipeline can be significantly enhanced, so as to prevent the sensor from sliding or falling off on the pipeline.

[0013] As a preferred technical scheme, symmetrically fixed and connected with assembly blocks are arranged on one side of the installation back plate close to the chamfer, symmetrically provided with assembly grooves are arranged on one side of the installation base close to the chamfer, the assembly blocks are clamped with the assembly grooves, the clamping design of the assembly blocks and the assembly grooves makes the connection between the installation back plate and the installation base simple and fast, the operator does not need to carry out complex bolt connection or welding operation, only needs to align the assembly blocks with the assembly grooves and gently push in to realize the stable connection of the two, which greatly simplifies the installation process and improves the work efficiency.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] Firstly, in the utility model, the protective shell is attached to the installation base and the installation pipeline, then the installation back plate is combined with the installation base, the assembly blocks are clamped with the assembly grooves, then the rotating handle is rotated to drive the driven gear to rotate, thereby controlling the rotating column to rotate, the screw hole in the rotating column is threadedly rotated with the threaded rod, thereby controlling the arc-shaped clamping seat to move, the arc-shaped clamping seat clamps the installation pipeline, the installation of the photoelectric liquid level sensor is completed, different diameters of pipelines can be easily adapted, the photoelectric liquid level sensor can be installed and used on various sizes of pipeline systems, special installation parts do not need to be customized for each pipeline size, not only the procurement cost is reduced, but also the installation process is simplified, and complex installation tools or a large amount of installation time are not needed, thereby the installation cost is reduced.

[0016] Secondly, in the utility model, when the arc-shaped clamping seat completes the installation of the photoelectric liquid level sensor, the pressing block is pressed to drive the clamping block to move, the moving plate is pressed to the second return spring, the second return spring is compressed, at the same time, the clamping block is retracted into the cavity, then the handle is pushed to make the rotating handle slide in the rotating groove, the clamping block is moved to the clamping groove in the rotating groove, the pressing block is released, the moving plate rebounds to drive the clamping block to pop out and clamp with the clamping groove, at the same time, the limiting column at one end of the rotating handle is inserted into the limiting hole, the threaded rod can be effectively prevented from loosening due to vibration or external force in the long-term use process, the stability and reliability of the sensor are ensured, measurement errors or faults caused by loosening are avoided, and a greater clamping force can be generated to ensure that the sensor can be firmly fixed on the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 is another schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 3 is a schematic diagram of the exploded three-dimensional structure of the utility model;

[0020] Figure 4Is the installation backboard three-dimensional structure schematic diagram of the utility model;

[0021] Figure 5 Is the handle three-dimensional structure schematic diagram of the utility model;

[0022] Figure 6 Is the driving gear three-dimensional structure schematic diagram of the utility model;

[0023] Figure 7 Is the limiting assembly cutaway three-dimensional structure schematic diagram of the utility model;

[0024] Figure 8 Is the telescopic assembly cutaway three-dimensional structure schematic diagram of the utility model.

[0025] Reference signs: 1, installation pipeline;2, mounting seat;3, installation backplate;4, arc slot;5, protective shell;6, PCB board;7, electronic connecting line;8, controller;9, assembly block;10, assembly slot;11, telescopic assembly;111, installation slot;112, fixed seat;113, first fixed column;114, second fixed column;115, built-in hole;116, first reset spring;117, connecting column;12, arc clamping seat;13, non-slip pad;14, clamping assembly;141, rotating column;142, screw hole;143, threaded rod;144, driving gear;145, driven gear;146, handle;147, rotating slot;15, limiting assembly;151, cavity;152, second reset spring;153, moving plate;154, press block;155, clamping block;16, clamping slot;17, limiting column;18, limiting hole;19, guide block;20, guide slot. DETAILED DESCRIPTION

[0026] EMBODIMENT

[0027] REFERENCE Figures 1 to 8The pipeline type photoelectric liquid level sensor disclosed by the embodiment comprises a mounting pipeline 1, a mounting seat 2 movably connected to the outer side of the mounting pipeline 1, a mounting back plate 3 clamped to the other side of the mounting seat 2, a protective shell 5 threadedly connected to the side of the mounting seat 2 away from the mounting pipeline 1, a PCB board 6 fixedly connected inside the protective shell 5, electronic connecting wires 7 symmetrically and equidistantly mounted at the bottom of the PCB board 6, a controller 8 mounted at the other end of the electronic connecting wires 7, arc-shaped grooves 4 formed at the opposite ends of the mounting seat 2 and the mounting back plate 3, and telescopic assemblies 11 symmetrically mounted inside the arc-shaped grooves 4 of the mounting seat 2, wherein the mounting back plate 3 is provided with a clamping assembly 14 mounted at the side of the mounting back plate 3 away from the mounting seat 2, the mounting pipeline 1 is made of transparent material, the PCB board 6 is provided with a light emitter and a light receiver, when no liquid passes through the mounting pipeline 1, most of the light emitted by the light emitter is reflected by the optical prism surface to the light receiver, and when liquid passes through the mounting pipeline 1, a small part of the light emitted by the light emitter is reflected by the optical prism surface to the light receiver, and then the light receiver receives the intensity of the light emitted by the light emitter to output a low-voltage signal and a high-voltage signal, so as to determine the water state and the no-water state.

[0028] The clamping assembly 14 comprises a rotating column 141, a threaded hole 142, a threaded rod 143, a driving gear 144, a driven gear 145, a rotating handle 146, a rotating groove 147 and a limiting block, the rotating column 141 is rotatably connected to one side of the mounting back plate 3 in an embedded manner, the threaded hole 142 is formed at one end of the rotating column 141 and penetrates through the rotating column 141 and the mounting back plate 3, the threaded rod 143 is threadedly connected inside the threaded hole 142, one end of the threaded rod 143 extends to the inside of the arc-shaped groove 4 of the mounting back plate 3 and is rotatably connected with an arc-shaped clamping seat 12, the other end of the threaded rod 143 is fixedly connected with the limiting block, the driven gear 145 is fixedly sleeved outside the rotating column 141, the rotating groove 147 is formed at one side of the mounting back plate 3, the rotating handle 146 is rotatably connected inside the rotating groove 147, the driving gear 144 is fixedly sleeved outside the rotating handle 146, the driving gear 144 is rotatably connected to one side of the mounting back plate 3, the driving gear 144 and the driven gear 145 are meshed with each other, the limiting assembly 15 is symmetrically mounted inside the rotating handle 146, the protective shell 5 is attached to the mounting seat 2 and the mounting pipeline 1, then the mounting back plate 3 is combined with the mounting seat 2, the clamping assembly 14 is clamped through the assembly block 9 and the assembly groove 10, then the rotating handle 146 is rotated, the driving gear 144 drives the driven gear 145 to rotate, the rotating column 141 is controlled to rotate, the threaded hole 142 inside the rotating column 141 and the threaded rod 143 are threadedly rotated, the arc-shaped clamping seat 12 is controlled to move, the arc-shaped clamping seat 12 clamps the mounting pipeline 1, and the installation of the photoelectric liquid level sensor is completed.

[0029] Reference Figure 5 and Figure 7, the limiting assembly 15 includes a cavity 151, a second reset spring 152, a moving plate 153, a press block 154 and a clamping block 155, the inside of the rotating handle 146 is symmetrically provided with the cavity 151, one side of the inside of the cavity 151 is fixedly and symmetrically connected with the second reset spring 152, the other end of the second reset spring 152 is fixedly connected with the moving plate 153, the inside of the moving plate 153 and the cavity 151 are in sliding connection, the side, away from the second reset spring 152, of the moving plate 153 is fixedly connected with the press block 154 and the clamping block 155 respectively, the other side of the press block 154 and the clamping block 155 extends out of the outer side wall of the rotating handle 146, the rotating groove 147 and the rotating handle 146 are in sliding connection, the inner wall of the rotating groove 147 and the inner wall of the driving gear 144 are symmetrically provided with the clamping groove 16, the clamping block 155 and the clamping groove 16 are in clamping connection, after the arc-shaped clamping seat 12 completes the installation of the photoelectric liquid level sensor, the press block 154 is pressed, the moving plate 153 drives the clamping block 155 to move, the moving plate 153 is pressed to the second reset spring 152, the second reset spring 152 is compressed, at the same time, the clamping block 155 is retracted into the inside of the cavity 151, then the handle is pushed, the rotating handle 146 slides in the rotating groove 147, the clamping block 155 is moved to the clamping groove 16 in the rotating groove 147, the press block 154 is released, the moving plate 153 rebounds to drive the clamping block 155 to pop out and clamp with the clamping groove 16.

[0030] With reference to Figure 5 And Figure 6 , the outer side wall of the rotating handle 146 is symmetrically provided with the guide groove 20 through an annular circumferential array, the inner wall of the driving gear 144 is fixedly connected with the guide block 19 through an annular circumferential array, the guide block 19 and the guide groove 20 are in sliding connection, after the clamping block 155 and the clamping groove 16 in the inside of the driving gear 144 end clamping connection, the rotating handle 146 is pushed, the guide block 19 on the inner wall of the driving gear 144 slides in the guide groove 20 on the outer side of the rotating handle 146.

[0031] With reference to Figure 5 And Figure 6 , the side, close to the driving gear 144, of the rotating handle 146 is fixedly connected with the limiting column 17 symmetrically, the side of the driving gear 144 is symmetrically provided with the limiting hole 18, the limiting column 17 and the limiting hole 18 are in plug connection, after the clamping block 155 and the clamping groove 16 in the inside of the driving gear 144 end clamping connection, the rotating handle 146 is pushed, the rotating handle 146 drives the limiting column 17 to insert into the inside of the limiting hole 18.

[0032] With reference to Figure 8, telescopic assembly 11 includes installation groove 111, fixed seat 112, first fixed column 113, second fixed column 114, built-in hole 115, first reset spring 116 and connecting column 117, the inner wall of the arc-shaped groove 4 of the mounting seat 2 is symmetrically provided with the installation groove 111, the arc-shaped groove 4 of the mounting seat 2 is symmetrically provided with the connecting column 117, the bottom of the installation groove 111 and one end of the connecting column 117 are fixedly connected with the fixed seat 112, one side of the fixed seat 112 in the installation groove 111 is fixedly connected with the first fixed column 113, the other end of the first fixed column 113 is provided with the built-in hole 115, the bottom of the built-in hole 115 is fixedly connected with the first reset spring 116, the other end of the first reset spring 116 is fixedly connected with the second fixed column 114, the second fixed column 114 and the built-in hole 115 are in sliding connection, the other end of the second fixed column 114 is fixedly connected with the fixed seat 112 on the connecting column 117, the other end of the connecting column 117 is fixedly connected with the arc-shaped clamping seat 12, when the threaded rod 143 drives the arc-shaped clamping seat 12 to clamp the installation pipeline 1, the pipeline presses the arc-shaped clamping column on the other side, so that the connecting column 117 drives the second fixed column 114 to slide in the built-in hole 115 of the first fixed column 113, the second fixed column 114 is pressed to the first reset spring 116, and the first reset spring 116 is compressed.

[0033] Reference Figure 3 , the clamping end of the arc-shaped clamping seat 12 is glued with the anti-skid pad 13, the surface of the anti-skid pad 13 is provided with anti-skid convex points, the material of the anti-skid pad 13 is soft rubber, and the friction between the arc-shaped clamping seat 12 and the installation pipeline 1 can be significantly enhanced by the anti-skid pad 13, so that the sensor is prevented from sliding or falling off on the pipeline.

[0034] Reference Figure 2 , the mounting back plate 3 is symmetrically fixedly connected with the assembly block 9 near the chamfer on one side, the mounting seat 2 is symmetrically provided with the assembly groove 10 near the chamfer on one side, the assembly block 9 and the assembly groove 10 are clamped, the protective shell 5 is attached to the mounting seat 2 and the installation pipeline 1, then the mounting back plate 3 is combined with the mounting seat 2, and the assembly block 9 and the assembly groove 10 are clamped.

[0035] Principle and advantages: first, the protective shell 5 together with the mounting seat 2 and mounting pipe 1, then the mounting back plate 3 and mounting seat 2, through the assembly block 9 and assembly groove 10 are connected, then rotate the handle 146, drive gear 144 driven gear 145 rotation, thereby controlling the rotating column 141 rotation, rotating column 141 inside the screw hole 142 and threaded rod 143 screw rotation, thereby controlling the arc clamping seat 12 movement, arc clamping seat 12 on the mounting pipe 1 clamping, when the arc clamping seat 12 complete photoelectric liquid level sensor installation, press the block 154, make the moving plate 153 driven block 155 movement, moving plate 153 compression spring 152, second reset spring 152 compression, while the block 155 retract cavity 151 inside, then push the handle, make the handle 146 in the rotating groove 147 sliding, the block 155 move to the rotating groove 147 inside the clamping groove 16, release the block 154, moving plate 153 rebound driven block 155 pop up with the clamping groove 16 are connected, while the handle 146 one end of the limit column 17 inserted into the limit hole 18 inside, when no liquid through the mounting pipe 11, optical prism surface will reflect most of the light emitter emitted light into the light receiver, while there is liquid through the mounting pipe 1, optical prism surface will reflect a small part of the light emitter emitted light into the light receiver, thereby through the light receiver received light emitter emitted light intensity output low voltage signal and high voltage signal, so as to determine the water state and no water state;

[0036] The utility model discloses can easily adapt to the pipeline of different diameter, can install and use on various size pipeline system, need not for each pipeline size customizes special mounting piece, not only reduced the purchase cost, also simplified the installation process, and need not complicated installation tool or a great deal of installation time to reduce the installation cost.

Claims

1. A pipe-mounted optoelectronic liquid level sensor comprising a mounting pipe, characterized in that: The installation pipeline is movably connected with an installation seat outside, the installation seat is movably connected with an installation back plate, a protective shell is movably connected with the installation seat away from the installation pipeline, a PCB board is fixedly connected inside the protective shell, electronic connecting wires are symmetrically and equidistantly installed at the bottom of the PCB board, a controller is installed at the other end of the electronic connecting wires, arc-shaped grooves are formed in the opposite ends of the installation seat and the installation back plate, and telescopic assemblies are symmetrically installed inside the arc-shaped grooves of the installation seat. The clamping assembly comprises a rotating column, a threaded hole, a threaded rod, a driving gear, a driven gear, a rotating handle, a rotating groove and a limiting block, the rotating column is rotatably connected to the installation back plate in a symmetrical and embedded manner, the threaded hole is formed in one end of the rotating column, the threaded hole penetrates the rotating column and the installation back plate, the threaded rod is in threaded connection with the threaded hole, one end of the threaded rod extends into the arc-shaped clamping seat in the arc-shaped groove of the installation back plate and is rotatably connected with the arc-shaped clamping seat, the limiting block is fixedly connected to the other end of the threaded rod, the driven gear is fixedly connected to the outside of the rotating column, the rotating groove is formed in one side of the installation back plate, the rotating handle is rotatably connected inside the rotating groove, the driving gear is fixedly connected to the outside wall of the rotating handle, the driving gear is rotatably connected to one side of the installation back plate, the driving gear and the driven gear are in meshing connection, and the limiting assembly is symmetrically installed inside the rotating handle.

2. A pipeline photoelectric liquid level sensor according to claim 1, characterized in that: The limiting assembly comprises a cavity, a second reset spring, a moving plate, a pressing block and a clamping block, the cavity is symmetrically formed inside the rotating handle, the second reset spring is fixedly connected to one side of the cavity inside in a symmetrical and equidistant manner, the moving plate is fixedly connected to the other end of the second reset spring, the moving plate is in sliding connection with the cavity inside, the pressing block and the clamping block are fixedly connected to one side of the moving plate away from the second reset spring, and the other side of the pressing block and the clamping block extends out of the outside wall of the rotating handle.

3. A pipeline photoelectric liquid level sensor according to claim 2, characterized in that: The rotating groove and the rotating handle are in sliding connection, the clamping block and the clamping groove are in clamping connection, and the clamping groove is symmetrically formed in the inner wall of the rotating groove and the inner wall of the driving gear.

4. A pipeline photoelectric liquid level sensor according to claim 1, characterized in that: The guiding grooves are symmetrically formed in the outside wall of the rotating handle through an annular circumferential array, the guiding blocks are fixedly connected to the inner wall of the driving gear through an annular circumferential array, and the guiding blocks and the guiding grooves are in sliding connection.

5. A pipeline photoelectric liquid level sensor according to claim 1, characterized in that: The limiting columns are fixedly connected to one side of the rotating handle away from the driving gear in a symmetrical manner, the limiting holes are symmetrically formed in one side of the driving gear, and the limiting columns and the limiting holes are in plug connection.

6. A pipeline photoelectric liquid level sensor according to claim 1, characterized in that: The telescopic assembly comprises a mounting groove, a fixed seat, a first fixed column, a second fixed column, an inner hole, a first return spring and a connecting column, the inner wall of the arc-shaped groove of the mounting seat is symmetrically provided with a mounting groove, the inside of the arc-shaped groove of the mounting seat is symmetrically provided with a connecting column, the bottom of the mounting groove and one end of the connecting column are fixedly connected with a fixed seat, one side of the fixed seat in the mounting groove is fixedly connected with a first fixed column, the other end of the first fixed column is provided with an inner hole, the bottom of the inner hole is fixedly connected with a first return spring, the other end of the first return spring is fixedly connected with a second fixed column, the second fixed column is in sliding connection with the inside of the inner hole, the other end of the second fixed column is fixedly connected with the fixed seat on the connecting column, and the other end of the connecting column is fixedly connected with an arc-shaped clamping seat.

7. A pipeline photoelectric liquid level sensor according to claim 1, characterized in that: The clamping end of the arc-shaped clamping seat is glued with a non-slip pad, the surface of the non-slip pad is provided with non-slip convex points, and the material of the non-slip pad is soft rubber.

8. A pipeline photoelectric liquid level sensor according to claim 1, characterized in that: One side of the mounting back plate close to the chamfer is symmetrically fixedly connected with an assembly block, one side of the mounting seat close to the chamfer is symmetrically provided with an assembly groove, and the assembly block and the assembly groove are clamped.

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