Non-contact liquid level sensor based on infrared technology

Abstract

The utility model relates to the technical field of liquid level sensors, in particular to a non-contact liquid level sensor based on the infrared technology, which comprises a mounting plate, a height adjusting mechanism is fixedly mounted on the outer side of the mounting plate, a base frame is fixedly mounted on the outer side of the height adjusting mechanism, and an annular rail is fixedly mounted on the outer side of the base frame. And the interior of the annular rail is slidably connected with a driving assembly. A first motor drives a driving gear to be meshed with a gear block, so that a sliding block slides and rotates in an annular rail, a transverse adjusting mechanism is combined, a sensor can annularly move in the annular rail, a second motor drives a lead screw to linearly move, and the innovative design enables the sensor to move at any position in the annular rail. The adjustment adaptation capacity of the device is greatly improved, the liquid level detection requirements of containers of different positions and different numbers are flexibly met, and the adaptation use performance of the device is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level sensors, in particular to a non-contact liquid level sensor based on infrared technology. Background Art

[0002] The non-contact liquid level sensor based on infrared technology is a device that uses infrared rays to detect liquid levels. Its working principle is to determine the level of liquid by emitting infrared rays and detecting their reflection or refraction. Specifically, the non-contact infrared liquid level sensor emits infrared light, which has different refraction and reflection characteristics when passing through air and liquid. In the absence of water, the infrared light emitted by the sensor will propagate along a predetermined path and be completely reflected back to the receiver. However, when water is present, the infrared light will be partially or completely refracted into the liquid, causing the light received by the receiver to decrease or disappear. By detecting the intensity or pattern changes of the light received by the receiver, the sensor can determine the level of liquid.

[0003] A Chinese patent with publication number "CN114199339A" discloses a blockchain-based non-contact liquid level sensor, which is used to solve the problem that the non-contact liquid level sensor cannot perform fault monitoring based on operating data and cannot adjust the monitoring position based on the container liquid level. It includes an operation analysis module and a fault monitoring module. The operation analysis module is used to analyze the liquid level data monitored by the liquid level sensor. After receiving the operation deviation value and the environmental impact value, the fault monitoring module is used to monitor the liquid level sensor for faults and generate a normal operation signal, an operation warning signal or an operation fault signal; the fault monitoring module feeds back the normal operation signal, the operation warning signal or the operation fault signal to the processor. The utility model facilitates the non-contact liquid level sensor to perform fault monitoring and judgment based on the operation data, and also facilitates the non-contact liquid level sensor to intelligently adjust the monitoring position according to the container liquid level.

[0004] During use, although the above-mentioned device can facilitate the non-contact liquid level sensor to intelligently adjust the monitoring position according to the liquid level of the container, the overall position of the sensor is in a fixed state during its use, and the liquid level sensor is always in a fixed state during its use. During its use, the liquid level sensor can only assist in detecting the liquid level of one container. When multiple liquid levels need to be detected, a liquid level sensor needs to be installed inside each container. It can be seen that when it is used for liquid level detection of multiple containers during its overall use, the overall cost is relatively high, so it needs to be improved.

[0005] To this end, we propose a non-contact liquid level sensor based on infrared technology to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a non-contact liquid level sensor based on infrared technology to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides a non-contact liquid level sensor based on infrared technology, comprising a mounting plate, a height adjustment mechanism is fixedly mounted on the outer side of the mounting plate, a base frame is fixedly mounted on the outer side of the height adjustment mechanism, a ring rail is fixedly mounted on the outer side of the base frame, a driving component is slidably connected inside the ring rail, a lateral adjustment mechanism is fixedly mounted on the outer side of the driving component, a mounting mechanism is fixedly mounted on the outer side of the lateral adjustment mechanism, and an infrared liquid level sensor is mounted on the lateral adjustment mechanism through the mounting mechanism;

[0008] The driving assembly includes a sliding block and a gear block, the sliding block is slidably connected to the inner side of the annular rail, a fixing frame is fixedly installed on the outer side of the sliding block, a base plate is fixedly installed on the top of the fixing frame, a first motor is fixedly installed on one side of the base plate, a driving gear is fixedly installed on the output end of the first motor through the base plate, the gear blocks are arranged in a ring shape with equal intervals and are fixedly connected to the top of the annular rail, and the driving gear and the gear blocks are meshingly connected.

[0009] Furthermore, the height adjustment mechanism includes a side rail, which is fixedly mounted on a side of the mounting plate close to the annular rail, and a slider is slidably connected to the inside of the side rail, and hand-tightened screws are threadedly connected to the upper and lower ends of the slider close to the annular rail, and the ends of the hand-tightened screws pass through the slider and the inner wall of the side rail for fitting connection, and the outer side of the slider is fixedly connected to the fixing frame.

[0010] Furthermore, mounting holes are provided at both upper and lower ends of the mounting plate, and the mounting holes are configured as countersunk holes.

[0011] Furthermore, the overall cross-sectional shape of the sliding block and the slider is convex, the cross-sectional shape of the inner wall of the annular rail and the inner wall of the side rail is also convex, and the inner walls of the annular rail and the side rail and the outer surfaces of the sliding block and the slider are fixedly connected with wear-resistant gaskets.

[0012] Furthermore, the lateral adjustment mechanism includes an inner rail, which is fixedly installed on the inner side of the sliding block, and a second motor is fixedly installed on the side of the inner rail close to the sliding block, and a screw rod is fixedly installed on the output end of the second motor through the inner rail, and the screw rod is rotatably connected to the inside of the inner rail, and the outer surface of the screw rod is threadedly connected to the sliding block, and the sliding block is slidably connected to the inside of the inner rail, and the outer side of the sliding block is fixedly connected to the mounting mechanism.

[0013] Furthermore, the mounting mechanism includes a concave seat, which is fixedly mounted on a side of the sliding block away from the inner rail, and sliding grooves are provided on both sides of the concave seat, and sliding bars are slidably connected inside the sliding grooves. The infrared liquid level sensor is fixedly mounted on the inner side of the sliding bar, and limiting components are fixedly mounted on both ends of the outer side of the concave seat.

[0014] Furthermore, the limiting assembly includes a round shell, which is fixedly installed at the two ends of the front side of the concave seat. A torsion spring is fixedly installed inside the round shell, and a limiting rod is fixedly installed on the outer end of the torsion spring. The side shape of the limiting rod is L-shaped.

[0015] Furthermore, a limiting block is fixedly installed on the inner end of the limiting rod, and a side of the limiting block close to the concave seat is fitted and connected to the infrared liquid level sensor.

[0016] Furthermore, balls are rotatably connected to the top and bottom of the sliding block at equal intervals, and the outer sides of the balls are fitted and connected to the inner wall of the annular rail.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] Firstly, in the utility model, the device realizes flexible adjustment of the height and lateral position of the infrared liquid level sensor through a height adjustment mechanism and a lateral adjustment mechanism. The height is adjusted by sliding the slider in the side rail and fixed with a hand-tightened screw. The second motor is used to drive the screw to rotate in the inner rail, and the sliding block is adjusted to achieve lateral displacement. This design enhances the adaptability of the device and can be easily adapted to water level detection in different containers. The user only needs to place the container at the bottom of the annular rail to flexibly adjust the detection liquid level, which greatly improves the ease of use and adaptability of the device.

[0019] Secondly, in the utility model, the device utilizes a drive assembly and an annular rail design to achieve highly flexible adjustment of the infrared liquid level sensor. The first motor drives the active gear to mesh with the tooth block, allowing the sliding block to slide and rotate in the annular rail. Combined with the lateral adjustment mechanism, the sensor can move in a circular shape in the annular rail, and the second motor drives the lead screw to perform linear displacement. This innovative design enables the sensor to move at any position in the annular rail, greatly improving the adjustment and adaptation capabilities of the device, flexibly meeting the liquid level detection needs of containers in different positions and numbers, and significantly improving the adaptability of the device.

[0020] Thirdly, in the utility model, the device is provided with an installation mechanism, which realizes the rapid installation of the infrared liquid level sensor through the cooperation of the slide bar and the slide groove. After the slide bar is inserted into the slide groove, the torsion spring drives the limit rod to rotate, so that the limit block blocks the sensor to ensure stable installation. When the sensor needs to be maintained or replaced, the limit block is released by rotating the limit rod in the opposite direction, and the slide bar is easily pulled out to realize rapid disassembly. This design not only simplifies the installation and disassembly process, but also improves the maintenance efficiency, making the disassembly and maintenance of the infrared liquid level sensor more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the utility model when viewed from above;

[0024] Figure 4 It is a schematic diagram of the structure of the lateral adjustment mechanism and the driving assembly in the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the installation mechanism and the infrared liquid level sensor body in the utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the mid-infrared liquid level sensor and the mounting mechanism of the utility model when viewed from above;

[0027] Figure 7 It is a structural schematic diagram of the installation mechanism in the utility model;

[0028] Figure 8 For the utility model Figure 1 A is an enlarged structural diagram of FIG.

[0029] In the figure: 1. mounting plate; 2. height adjustment mechanism; 21. side rail; 22. slider; 23. hand-tightened screw; 3. base frame; 4. annular rail; 5. drive assembly; 51. sliding block; 52. gear block; 53. fixed frame; 54. base plate; 55. first motor; 56. driving gear; 57. ball bearing; 6. lateral adjustment mechanism; 61. inner rail; 62. second motor; 63. screw rod; 64. sliding block; 7. mounting mechanism; 71. concave seat; 72. slide groove; 73. slide bar; 74. limit assembly; 741. round shell; 742. torsion spring; 743. limit rod; 744. limit block; 8. infrared liquid level sensor; 9. mounting hole. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-Figure 8 In an embodiment of the utility model, a non-contact liquid level sensor based on infrared technology includes a mounting plate 1, a height adjustment mechanism 2 is fixedly mounted on the outer side of the mounting plate 1, a base frame 3 is fixedly mounted on the outer side of the height adjustment mechanism 2, a ring rail 4 is fixedly mounted on the outer side of the base frame 3, a driving component 5 is slidably connected inside the ring rail 4, a lateral adjustment mechanism 6 is fixedly mounted on the outer side of the driving component 5, a mounting mechanism 7 is fixedly mounted on the outer side of the lateral adjustment mechanism 6, and an infrared liquid level sensor 8 is mounted on the lateral adjustment mechanism 6 through the mounting mechanism 7;

[0032] The driving assembly 5 includes a sliding block 51 and a tooth block 52. The sliding block 51 is slidably connected to the inner side of the annular rail 4. A fixing frame 53 is fixedly installed on the outer side of the sliding block 51. A base plate 54 is fixedly installed on the top of the fixing frame 53. A first motor 55 is fixedly installed on one side of the base plate 54. The output end of the first motor 55 passes through the base plate 54 and is fixedly installed with a driving gear 56. The tooth blocks 52 are arranged in a ring at equal intervals and are fixedly connected to the top of the annular rail 4. The driving gear 56 and the tooth blocks 52 are meshed and connected. Inside the annular rail 4, the sliding block 51 is slidably connected thereto, allowing the sensor to move in the annular rail 4. Another fixing frame 53 is fixedly installed on the outer side of the sliding block 51. The top of the fixing frame 53 is provided with a A base plate 54 is provided, on which a first motor 55 is fixed. The output end of the first motor 55 passes through the base plate 54 and is connected to a driving gear 56. The driving gear 56 meshes with the tooth blocks 52 arranged in an annular shape at equal intervals on the top of the annular rail 4, thereby realizing the precise movement of the sliding block 51 in the annular rail 4. A lateral adjustment mechanism 6 is fixed on the outside of the sliding block 51 for adjusting the position of the sensor in the horizontal direction. A mounting mechanism 7 is installed on the outside of the lateral adjustment mechanism 6 for mounting and fixing an infrared liquid level sensor 8. This design enables the sensor to flexibly adjust its position in three-dimensional space, thereby adapting to containers of different shapes and sizes and realizing efficient and accurate liquid level detection.

[0033] See also Figure 1-Figure 3The height adjustment mechanism 2 includes a side rail 21, which is fixedly mounted on one side of the mounting plate 1 close to the annular rail 4. A slider 22 is slidably connected inside the side rail 21. The upper and lower ends of the slider 22 close to the annular rail 4 are threadedly connected with a hand-tightened screw 23. The end of the hand-tightened screw 23 passes through the slider 22 and the inner wall of the side rail 21 and is fitted and connected. The outer side of the slider 22 is fixedly connected to the fixing frame 53. The side rail 21 is located on one side of the mounting plate 1 close to the annular rail 4. A slider 22 is slidably connected inside the side rail 21. The slider 22 can slide up and down in the side rail 21, thereby realizing the overall height adjustment of the sensor. In order to fix the position of the slider 22 in the side rail 21, the slider 2 The upper and lower ends of the side close to the annular rail 4 are both threadedly connected with hand-tightened screws 23. The ends of these hand-tightened screws 23 can penetrate the slider 22 and fit on the inner wall of the side rail 21. By rotating the hand-tightened screws 23, they can fit tightly with the inner wall of the side rail 21, thereby locking the position of the slider 22 to prevent it from accidentally sliding. The outer side of the slider 22 is fixedly connected to the fixing frame 53, and the fixing frame 53 supports the annular rail 4 and the subsequent driving assembly 5, the lateral adjustment mechanism 6 and the installation mechanism 7. This design allows the height of the entire sensor to be flexibly adjusted as needed, and stable fixation is achieved through the hand-tightened screws 23 to meet the needs of liquid level detection at different heights and positions.

[0034] See also Figure 1 , mounting holes 9 are provided at both upper and lower ends of the mounting plate 1, and the mounting holes 9 are set as countersunk holes. Mounting holes 9 are provided at both upper and lower ends of the mounting plate 1, and these mounting holes 9 are specially designed as countersunk holes. Countersunk holes, as a kind of connecting piece, usually have a flat circular bottom hole and a concave structure similar to a cone. This design allows the head of a fastener such as a bolt or a screw to be embedded in the hole, so that the head is flush with the surface of the mounting plate 1, avoiding the protrusion of the screw or bolt, thereby ensuring the flatness of the mounting plane. In the liquid level sensor, the mounting plate 1 is connected to other components or equipment through the countersunk holes, which can not only ensure the firmness of the connection, but also maintain the beauty and neatness of the overall appearance. In addition, the countersunk holes can effectively disperse the force, enhance the bearing capacity of the connection surface, and improve the stability and durability of the connection. Therefore, this non-contact liquid level sensor based on infrared technology, through the countersunk hole design on the mounting plate 1, not only improves the convenience and aesthetics of installation, but also enhances the stability and reliability of the connection.

[0035] See also Figure 1-Figure 3The overall cross-sectional shape of the sliding block 51 and the slider 22 is set in a convex shape, and the cross-sectional shape of the inner wall of the annular rail 4 and the inner wall of the side rail 21 is also set in a convex shape. The inner walls of the annular rail 4 and the side rail 21 and the outer surfaces of the sliding block 51 and the slider 22 are fixedly connected with wear-resistant gaskets. The overall cross-sectional shape of the sliding block 51 and the slider 22 is designed to be a convex shape. This design ensures that they are tightly matched with the inner walls of the annular rail 4 and the side rail 21. At the same time, the cross-sectional shape of the inner wall of the annular rail 4 and the inner wall of the side rail 21 is also correspondingly set to a convex shape to perfectly match the sliding block 51 and the slider 22. In order to ensure the smoothness and wear resistance of the sliding block 51 and the slider 22 during the sliding process The inner walls of the annular rail 4 and the side rail 21 and the outer surfaces of the sliding block 51 and the slider 22 are fixedly connected with wear-resistant gaskets, which are made of wear-resistant materials, specifically rubber, polytetrafluoroethylene PTFE or polymer composite materials, which can effectively reduce friction and wear during sliding and extend the service life of the sensor. The design of the convex cross-section shape not only improves the connection stability between the sliding block 51 and the slider 22 and the annular rail 4 and the side rail 21, but also makes the entire device smoother and more precise when adjusting the height and position. At the same time, the application of wear-resistant gaskets further enhances the performance and reliability of the device, enabling it to work stably in various harsh environments.

[0036] See also Figure 4The lateral adjustment mechanism 6 includes an inner rail 61, which is fixedly mounted on the inner side of the sliding block 51. A second motor 62 is fixedly mounted on one side of the inner rail 61 near the sliding block 51. The output end of the second motor 62 passes through the inner rail 61 and is fixedly mounted with a screw rod 63. The screw rod 63 is rotatably connected to the inside of the inner rail 61. The outer surface of the screw rod 63 is threadedly connected to a sliding block 64. The sliding block 64 is slidably connected to the inside of the inner rail 61. The outer side of the sliding block 64 is fixedly connected to the mounting mechanism 7. The core component of the lateral adjustment mechanism 6 is the inner rail 61, which is fixedly mounted on the inner side of the sliding block 51. The inner rail 61 provides a stable sliding path for guiding the movement of the sliding block 64. A second motor 62 is fixedly mounted on one side of the inner rail 61 near the sliding block 51. The output end of the second motor 62 passes through the inner rail 61 and is fixedly connected to the screw rod 63. The screw rod 63 is rotatably connected to the inside of the inner rail 61, so that when the second motor 62 is started, the screw rod 63 can rotate freely. The screw rod 63 The outer surface of the slide block 64 is threadedly connected. Due to the threaded connection between the screw rod 63 and the slide block 64, when the screw rod 63 rotates, the slide block 64 will slide inside the inner rail 61 along the direction of the screw rod 63. This design utilizes the transmission principle of the screw rod 63 to achieve precise control of the slide block 64. The outer side of the slide block 64 is fixedly connected to the mounting mechanism 7, and the mounting mechanism 7 is used to install and fix the infrared liquid level sensor 8. Therefore, when the slide block 64 slides inside the inner rail 61, it will drive the mounting mechanism 7 and the infrared liquid level sensor 8 to move together, thereby realizing the horizontal position adjustment of the infrared liquid level sensor 8. The design of this lateral adjustment mechanism 6 not only improves the position adjustment accuracy of the infrared liquid level sensor 8, but also enhances its ability to adapt to different containers and liquid level detection requirements. At the same time, through the precise control of the second motor 62, the stable movement of the infrared liquid level sensor 8 in the horizontal direction can be ensured, thereby improving the accuracy and reliability of liquid level detection.

[0037] See also Figure 4-Figure 6The mounting mechanism 7 includes a concave seat 71, which is fixedly mounted on the side of the sliding block 64 away from the inner rail 61. Slide grooves 72 are provided on both sides of the concave seat 71. Slide bars 73 are slidably connected inside the slide grooves 72. The infrared liquid level sensor 8 is fixedly mounted on the inner side of the slide bar 73. The outer ends of the concave seat 71 are fixedly mounted with limit assemblies 74. The core component of the mounting mechanism 7 is the concave seat 71, which is fixedly mounted on the side of the sliding block 64 away from the inner rail 61. Slide grooves 72 are provided on both sides of the concave seat 71. These slide grooves 72 provide sliding tracks for the slide bar 73, so that the slide bar 73 can slide freely inside the concave seat 71. The inner side of the slide bar 73 is fixedly mounted with an infrared liquid level sensor 8. This design allows the infrared liquid level sensor 8 to perform micro-positioning by sliding the slide bar 73 in the slide groove 72. Adjustment, at the same time, due to the close cooperation between the slide bar 73 and the slide groove 72, the stability of the infrared liquid level sensor 8 after installation is ensured. In order to enhance the stability of the infrared liquid level sensor 8 after installation, limit components 74 are fixedly installed at both ends of the outer side of the concave seat 71. These limit components 74 can fix the slide bar 73 through its structural characteristics after the slide bar 73 slides to the appropriate position to prevent it from accidentally sliding. The design of the entire installation mechanism 7 not only enables the infrared liquid level sensor 8 to be quickly and stably installed on the concave seat 71, but also realizes fine adjustment of the sensor position through the cooperation of the slide bar 73 and the slide groove 72. At the same time, the addition of the limit component 74 further enhances the stability after installation, so that the sensor can maintain stable performance in various working environments. This design improves the accuracy and reliability of liquid level detection.

[0038] See also Figure 7The limiting assembly 74 includes a round shell 741, which is fixedly installed at the two ends of the front side of the concave seat 71. A torsion spring 742 is fixedly installed inside the round shell 741, and a limiting rod 743 is fixedly installed on the outer end of the torsion spring 742. The side shape of the limiting rod 743 is set in an L shape. A torsion spring 742 is fixedly installed inside the round shell 741. The torsion spring 742 is an elastic element that can store and release torsional energy. Its role here is to provide a reset force to ensure that the limiting rod 743 can remain in the initial position when not subjected to external force. One end of the limiting rod 743 is fixedly connected to the outer end of the torsion spring 742, and the other end extends out of the round shell 741. The side shape of the limiting rod 743 is set in an L shape. This design makes the limiting rod 7 When the circular shell 741 is extended, a blocking structure can be formed to prevent the slide bar 73 from accidentally sliding in the slide groove 72. When the slide bar 73 slides to a suitable position, the limit rod 743 can be pressed inward by an external force to temporarily leave the path of the slide bar 73. At this time, the slide bar 73 can continue to slide to the desired position in the slide groove 72. When the external force disappears, due to the reset effect of the torsion spring 742, the limit rod 743 will quickly return to the initial position and re-form the blocking structure to fix the slide bar 73 in the current position. The design of this limit assembly 74 is not only simple in structure and easy to operate, but also can effectively prevent the slide bar 73 from accidentally sliding in the slide groove 72, thereby ensuring the stable fixation of the infrared liquid level sensor 8 in the mounting mechanism 7.

[0039] See also Figure 7 The inner end of the limit rod 743 is fixedly installed with a limit block 744. The limit block 744 is close to the side of the concave seat 71 and is closely connected to the infrared liquid level sensor 8. The limit block 744 is fixed to the inner end of the limit rod 743. Its design purpose is to closely fit with the infrared liquid level sensor 8 to provide additional fixation and support. When the slide bar 73 slides to a suitable position in the slide groove 72 and the limit rod 743 is pressed inward by external force to allow the slide bar 73 to continue to move, the limit block 744 will temporarily When the infrared liquid level sensor 8 is separated from the infrared liquid level sensor 8, the infrared liquid level sensor 8 can be removed. When it needs to be installed, just insert the slide bar 73 into the inside of the slide groove 72. Once the slide bar 73 reaches the desired position and the external force disappears, the limit rod 743 will quickly return to the initial position under the resetting action of the torsion spring 742. At this time, the limit block 744 will fit with the infrared liquid level sensor 8 again to ensure its stable position in the installation mechanism 7, so that the infrared liquid level sensor 8 as a whole is easy to disassemble and maintain.

[0040] See also Figure 4The top and bottom of the sliding block 51 are rotatably connected with balls 57 at equal intervals. The outer sides of the balls 57 are fitted and connected to the inner wall of the annular rail 4. The balls 57 form a rolling friction mechanism between the sliding block 51 and the annular rail 4. Compared with traditional sliding friction, the resistance of rolling friction is smaller, so the resistance of the sliding block 51 when sliding in the annular rail 4 can be significantly reduced, making the sliding smoother. The design of the balls 57 can make the movement of the sliding block 51 in the annular rail 4 more precise. Since the rolling of the balls 57 is carried out along a certain path, the stability of the sliding block 51 during the movement can be ensured. Since the balls 57 reduce the direct friction between the sliding block 51 and the annular rail 4, the wear between the two can be reduced, thereby extending the service life of the sensor.

[0041] The working principle of the utility model is as follows: by setting the height adjustment mechanism 2 and the lateral adjustment mechanism 6, the device can be used to adjust the slider 22 to slide inside the side rail 21 during use, thereby assisting in adjusting the height of the infrared liquid level sensor 8. At the same time, after the height of the liquid level sensor is adjusted, the hand-tightening screw 23 can be twisted to contact the fixed side rail 21 to assist in fixing the height of the infrared liquid level sensor 8. After the height adjustment of the infrared liquid level sensor 8 is completed, the second motor 62 can be started to operate, and the second motor 62 can be used to drive the screw 6 The inner rail 61 is rotated inside, and the screw rod 63 is rotated to assist in driving the sliding block 51 to move horizontally. The horizontal position of the infrared liquid level sensor 8 can be flexibly adjusted through the horizontal displacement of the sliding block 51, which can improve the overall adaptability of the device. The design of conveniently adjusting the position of the infrared liquid level sensor 8 can flexibly adjust the liquid level of different containers. During use, the container for detecting the liquid level only needs to be placed at the bottom of the annular rail 4, so that the device can flexibly adjust the detection liquid level, which can improve the overall adaptability and convenience of use of the device.

[0042] By setting the driving assembly 5 to cooperate with the annular rail 4, the device can be operated by starting the first motor 55 during use. The first motor 55 drives the driving gear 56 to rotate. The driving gear 56 rotates and the driving gear 56 and the tooth block 52 are meshed and connected. At this time, the sliding block 51 can be assisted to slide inside the annular rail 4. The sliding block 51 is located inside the annular rail 4 and rotates. At this time, the lateral adjustment mechanism 6 is started in coordination to operate, and the sliding block 51 inside the annular rail 4 rotates and displaces, which can adjust the infrared liquid level sensor 8 to move in an annular shape. At this time, the second motor 62 is started to drive the lead screw 63 to drive the sliding block 51 to move, which can assist in driving the infrared liquid level sensor 8 to move linearly. At this time, the infrared liquid level sensor 8 can be located at any position inside the annular rail 4, which can improve the overall adjustment and adaptation ability of the device, so that the device can be flexibly adapted to the container liquid level detection at any position at the bottom of the mounting rail, and it is also convenient to adapt to different numbers of solution liquid level detection, which can improve the overall adaptability of the device.

[0043] By setting the installation mechanism 7, during use of the device, the slide bar 73 can be inserted into the interior of the slide groove 72. When the slide bar 73 slides into the interior of the slide groove 72, the torsion spring 742 inside the round shell 741 can be reset and twisted to drive the limit rod 743 to rotate. The rotation of the limit rod 743 causes the limit block 744 to cover the front side of the infrared liquid level sensor 8, which can assist in limiting and shielding the infrared liquid level sensor 8, making it easier to install the infrared liquid level sensor 8. At the same time, when the infrared liquid level sensor 8 needs to be disassembled for inspection and repair, When the infrared liquid level sensor 8 is installed externally, the limit rod 743 can be rotated by adjusting the twisting limit rod 743. At this time, the torsion spring 742 is tightened to facilitate limiting when it is installed again, and the movement of the limit rod 743 can drive the limit block 744 to separate from the infrared liquid level sensor 8. The slide bars 73 on both sides of the infrared liquid level sensor 8 lose their limit, which can assist in removing the slide bar 73 from the slide groove 72 of the concave seat 71, so that the device as a whole can quickly disassemble and replace the infrared liquid level sensor 8, which is convenient for disassembly and maintenance of the infrared liquid level sensor 8.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A non-contact liquid level sensor based on infrared technology, characterized in that: It comprises a mounting plate, a height adjustment mechanism is fixedly mounted on the outer side of the mounting plate, a base frame is fixedly mounted on the outer side of the height adjustment mechanism, an annular rail is fixedly mounted on the outer side of the base frame, a driving assembly is slidably connected inside the annular rail, a lateral adjustment mechanism is fixedly mounted on the outer side of the driving assembly, a mounting mechanism is fixedly mounted on the outer side of the lateral adjustment mechanism, and an infrared liquid level sensor is mounted on the lateral adjustment mechanism through the mounting mechanism; The driving assembly includes a sliding block and a gear block, the sliding block is slidably connected to the inner side of the annular rail, a fixing frame is fixedly installed on the outer side of the sliding block, a base plate is fixedly installed on the top of the fixing frame, a first motor is fixedly installed on one side of the base plate, a driving gear is fixedly installed on the output end of the first motor through the base plate, the gear blocks are arranged in a ring shape with equal intervals and are fixedly connected to the top of the annular rail, and the driving gear and the gear blocks are meshingly connected.

2. The non-contact liquid level sensor based on infrared technology according to claim 1 is characterized in that: The height adjustment mechanism includes a side rail, which is fixedly mounted on a side of the mounting plate close to the annular rail, a slider is slidably connected inside the side rail, and hand-tightened screws are threadedly connected at both upper and lower ends of the slider close to the annular rail, the end of the hand-tightened screw passes through the slider and is fitted and connected to the inner wall of the side rail, and the outer side of the slider is fixedly connected to the fixing frame.

3. The non-contact liquid level sensor based on infrared technology according to claim 1, characterized in that: Mounting holes are provided at both upper and lower ends of the mounting plate, and the mounting holes are configured as countersunk holes.

4. The non-contact liquid level sensor based on infrared technology according to claim 2 is characterized in that: The overall cross-sectional shape of the sliding block and the slider is convex, the cross-sectional shape of the inner wall of the annular rail and the inner wall of the side rail is also convex, and the inner wall of the annular rail and the side rail and the outer surface of the sliding block and the slider are fixedly connected with wear-resistant gaskets.

5. The non-contact liquid level sensor based on infrared technology according to claim 1, characterized in that: The lateral adjustment mechanism includes an inner rail, which is fixedly installed on the inner side of the sliding block. A second motor is fixedly installed on the side of the inner rail close to the sliding block. A lead screw is fixedly installed on the output end of the second motor through the inner rail. The lead screw is rotatably connected to the inside of the inner rail. The outer surface of the lead screw is threadedly connected to the sliding block. The sliding block is slidably connected to the inside of the inner rail, and the outer side of the sliding block is fixedly connected to the mounting mechanism.

6. The non-contact liquid level sensor based on infrared technology according to claim 5, characterized in that: The mounting mechanism includes a concave seat, which is fixedly mounted on a side of the sliding block away from the inner rail. Slide grooves are provided on both sides of the concave seat, and slide bars are slidably connected inside the slide grooves. The infrared liquid level sensor is fixedly mounted on the inner side of the slide bar, and limit assemblies are fixedly mounted on both ends of the outer side of the concave seat.

7. The non-contact liquid level sensor based on infrared technology according to claim 6, characterized in that: The limiting assembly includes a round shell, which is fixedly installed at the two ends of the front side of the concave seat. A torsion spring is fixedly installed inside the round shell, and a limiting rod is fixedly installed at the outer end of the torsion spring. The side shape of the limiting rod is L-shaped.

8. The non-contact liquid level sensor based on infrared technology according to claim 7, characterized in that: A limiting block is fixedly installed on the inner end of the limiting rod, and a side of the limiting block close to the concave seat is fitted and connected with the infrared liquid level sensor.

9. The non-contact liquid level sensor based on infrared technology according to claim 1, characterized in that: The top and bottom of the sliding block are rotatably connected with balls at equal intervals, and the outer sides of the balls are fitted and connected with the inner wall of the annular rail.

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