Photoelectric liquid level sensor with water drop eliminating structure

Abstract

The utility model relates to the technical field of photoelectric liquid level sensors, in particular to a photoelectric liquid level sensor with a water drop eliminating structure, which comprises a mounting frame, a screw block is slidably connected to one side of the mounting frame, an assembly plate is fixedly connected to one side of the screw block, and a detector and a cone lens are mounted on the mounting block. A first motor on an assembling plate is used for driving a driving rod to rotate, the driving rod drives a first tooth cone to rotate, the first tooth cone drives a second tooth cone to rotate, and the second tooth cone drives a transmission rod to rotate, so that a pushing assembly is driven to work, a mounting block is driven by the pushing assembly to intermittently vibrate on the assembling plate, and the cone lens is accelerated to slide off from a cylinder; the photoelectric liquid level sensor is simple in structure and convenient to use, water drops on the cylinder are accelerated to fall, and light signals received by the photoelectric liquid level sensor subsequently can be ensured to be more accurate by effectively removing the water drops, so that the liquid level measurement precision is improved, and the detection precision and reliability of the photoelectric liquid level sensor are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of photoelectric liquid level sensor technology, and in particular to a photoelectric liquid level sensor with a water droplet elimination structure. Background Technology

[0002] Photoelectric liquid level sensors are advanced liquid level detection devices that operate based on the principle of optical sensing. They have many advantages, such as simple structure, high positioning accuracy, high sensitivity, corrosion resistance, low power consumption, and small size. With the continuous development of photoelectric technology, photoelectric liquid level sensors are being used more and more widely in the field of liquid level detection. A photoelectric liquid level sensor consists of a transparent conical lens, a light emitter, and a light receiver. When the liquid level of the measured liquid that has overflowed the transparent conical lens drops, water droplets will form on the tip of the transparent conical lens due to the surface tension of the liquid. To address this phenomenon, existing technology uses a water droplet elimination structure installed at the photoelectric liquid level sensor.

[0003] For example, Chinese patent CN216621368U discloses a photoelectric liquid level sensor with a water droplet elimination structure, including a cylinder with an internal cavity, a bottom opening at the bottom of the cylinder communicating with the cavity, a detector for detecting the liquid level of the liquid being measured inside the cavity, the detector having a downward-facing tip, and a water droplet elimination structure located below the detector, the water droplet elimination structure abutting against the tip.

[0004] The aforementioned patent describes installing a cylinder at the transparent conical lens, allowing water droplets to flow quickly along the circumference of the cylinder, shortening the residence time of the water droplets at the tip of the cone and improving detection sensitivity. However, this water droplet removal structure still has some defects that need improvement. Relying solely on the guiding effect of the cylinder to completely remove water droplets from the surface of the transparent conical lens is not entirely satisfactory. If the surface material of the cylinder is not smooth enough, it will increase the possibility of water droplet adhesion. If the surface of the transparent conical lens is too rough or has scratches, it will also increase the possibility of water droplets adhering to the transparent conical lens. Therefore, a considerable number of water droplets will still stubbornly adhere to the lens surface. These residual water droplets will undoubtedly cause significant interference to the detection accuracy and reliability of the photoelectric liquid level sensor, thereby affecting the smooth progress of the entire detection process and the accuracy of the results. Utility Model Content

[0005] The purpose of this invention is to provide a photoelectric liquid level sensor with a water droplet elimination structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a photoelectric liquid level sensor with a water droplet elimination structure, including a mounting frame. A screw block is slidably connected to one side of the mounting frame, an assembly plate is fixedly connected to one side of the screw block, a mounting block is mounted on one side of the assembly plate, a first driving component is provided on one side of the assembly plate, a pushing component is provided on one side of the first driving component, the mounting block is mounted on one side of the pushing component, a second driving component is provided on one side of the mounting frame, the screw block is slidably connected to the mounting frame through the second driving component, a detector is mounted on one side of the mounting block, a conical lens is mounted on one side of the detector, a cylinder is attached to one side of the conical lens, and the cylinder is installed inside the mounting block.

[0007] The first drive assembly includes a first motor, which is fixedly connected to one side of the assembly plate. A drive rod is fixedly connected to the output end of the first motor. A first toothed bevel is fixedly connected to one side of the drive rod. A second toothed bevel is meshed with one side of the first toothed bevel. A transmission rod is fixedly connected to one side of the second toothed bevel. One side of the push assembly is mounted on the transmission rod.

[0008] Furthermore, a bracket is fixedly connected to one side of the transmission rod on the assembly plate, and a bearing is fixedly connected to one side of the bracket. One side of the transmission rod is rotatably connected to the assembly plate through the bearing.

[0009] Furthermore, the pushing assembly includes a cam plate, which is fixedly connected to the transmission rod near the second tooth cone. A cam block is movably connected to one side of the cam plate. A first spring is fixedly connected to the side of the assembly plate away from the cam block. Two first springs are provided. A linkage block is fixedly connected to the top of the two first springs. A guide rod is fixedly connected to the side of the linkage block away from the first spring. One side of the guide rod is slidably connected to the assembly plate. One side of the guide rod is fixedly connected to one side of the cam block.

[0010] Furthermore, a guide sleeve is fixedly connected to one side of the assembly plate, and one side of the guide rod is slidably connected to the guide sleeve. A ring is fixedly connected to one side of the cam plate inside the assembly plate, and one side of the cam plate is slidably embedded inside the ring.

[0011] Furthermore, guide grooves are provided on both sides of the linkage block within the assembly plate, and guide blocks are slidably connected inside the guide grooves. One side of the guide block is fixedly connected to one side of the linkage block.

[0012] Furthermore, the second drive assembly includes a second motor, which is fixedly connected to the mounting bracket. A first gear is fixedly connected to the output end of the second motor. A second gear is meshed with one side of the first gear. A lead screw is fixedly connected to one side of the second gear. The lead screw is rotatably connected inside the mounting bracket. One side of the screw block is threadedly connected to the lead screw.

[0013] Furthermore, a plug block is fixedly connected to one side of the linkage block, and a slot is provided inside the mounting block. The slot is movably connected to the plug block. A second spring is installed on both sides of the slot inside the mounting block. A push block is connected to one side of the second spring, and a positioning rod is fixedly connected to one side of the push block. One side of the positioning rod is movably connected to the plug block.

[0014] Furthermore, a third spring is installed on both sides of the detector within the mounting block, and a wiping ring is connected to one side of the third spring, the wiping ring being slidably connected to the detector.

[0015] Furthermore, a stud is threadedly connected to one side of the mounting bracket, a torsion block is fixedly connected to one side of the stud, and a positioning pad is fixedly connected to the other side of the stud.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] Firstly, in this invention, a movable mounting block is set on the assembly plate, on which the detector and the conical lens are mounted. A first motor on the assembly plate drives a drive rod to rotate, which in turn drives a first toothed cone to rotate. The first toothed cone drives a second toothed cone to rotate, which in turn drives a transmission rod to rotate, thereby driving the push assembly to work. The push assembly causes the mounting block to vibrate intermittently on the assembly plate, accelerating the sliding of the conical lens off the cylinder and accelerating the falling of water droplets from the cylinder. By effectively removing these water droplets, the light signal received by the subsequent photoelectric liquid level sensor can be ensured to be more accurate, thereby improving the accuracy of liquid level measurement and greatly enhancing the detection accuracy and reliability of the photoelectric liquid level sensor.

[0018] Secondly, in this invention, by installing a second driving component on the mounting bracket, the second driving component drives the screw block to slide on the mounting bracket, causing the screw block to move the assembly plate, which in turn moves the mounting block, thus moving the photoelectric liquid level sensor. This facilitates removal from the object being measured and further simplifies maintenance of the conical lens of the photoelectric liquid level sensor. In addition, the second driving component can also adjust the working position of the photoelectric liquid level sensor, eliminating the need for frequent manual disassembly and reinstallation. This ensures that the photoelectric liquid level sensor is always in the optimal working position, providing unparalleled flexibility and accuracy for both precision measurement and routine maintenance, further enhancing the overall system's ease of operation and work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of one side of the mounting bracket in this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the mounting block and the assembly plate in this utility model;

[0022] Figure 4 This is a schematic diagram of the assembly plate structure in this utility model;

[0023] Figure 5 This is a schematic diagram of the mounting block structure in this utility model;

[0024] Figure 6 In this utility model Figure 3 A magnified structural diagram at point A;

[0025] Figure 7 In this utility model Figure 4 A magnified structural diagram at point B;

[0026] Figure 8 In this utility model Figure 5 A magnified structural diagram at point C.

[0027] In the diagram: 1. Mounting bracket; 2. Detector; 3. Conical lens; 4. First drive assembly; 41. First motor; 42. Drive rod; 43. First toothed bevel; 44. Second toothed bevel; 45. Transmission rod; 46. Bracket; 47. Shaft seat; 5. Push assembly; 51. Cam plate; 52. Cam block; 53. Guide rod; 54. Linkage block; 55. First spring; 56. Ring; 57. Guide sleeve; 58. Guide block; 59. Guide groove; 6. Screw block; 7. Assembly plate; 8. Mounting block; 9. Second drive assembly; 91. Second motor; 92. First gear; 93. Second gear; 94. Lead screw; 10. Cylinder; 11. Insert block; 12. Slot; 13. Positioning rod; 14. Push block; 15. Second spring; 16. Third spring; 17. Wiping ring; 18. Screw; 19. Torsion block; 20. Positioning pad. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-8In this embodiment of the present invention, a photoelectric liquid level sensor with a water droplet elimination structure includes a mounting frame 1. A screw block 6 is slidably connected to one side of the mounting frame 1, and an assembly plate 7 is fixedly connected to one side of the screw block 6. An installation block 8 is mounted on one side of the assembly plate 7. A first driving component 4 is provided on one side of the assembly plate 7, and a pushing component 5 is provided on one side of the first driving component 4. The installation block 8 is mounted on one side of the pushing component 5. A second driving component 9 is provided on one side of the mounting frame 1. The screw block 6 is slidably connected to the mounting frame 1 through the second driving component 9. A detector 2 is mounted on one side of the installation block 8, and a conical lens 3 is mounted on one side of the detector 2. The detector 2 and the conical lens 3 form a photoelectric liquid level sensor. A cylinder 10 is attached to one side of the conical lens 3, and the cylinder 10 can drain water droplets at the conical lens 3. The cylinder 10 is installed inside the installation block 8. The first driving component 4 includes a first motor 41, which is fixedly connected to one side of the inside of the assembly plate 7. A drive rod 42 is fixedly connected to the output end of a motor 41. A first toothed cone 43 is fixedly connected to one side of the drive rod 42. A second toothed cone 44 is meshed with one side of the first toothed cone 43. A transmission rod 45 is fixedly connected to one side of the second toothed cone 44. One side of the push assembly 5 is mounted on the transmission rod 45. The first motor 41 on the mounting plate 7 drives the drive rod 42 to rotate. The drive rod 42 drives the first toothed cone 43 to rotate. The first toothed cone 43 drives the second toothed cone 44 to rotate. The second toothed cone 44 drives the transmission rod 45 to rotate, thereby driving the push assembly 5 to work. After improvement, it can avoid water droplet residue affecting the detection accuracy of the photoelectric liquid level sensor, causing false alarms or malfunctions and shutdowns. It can ensure the stability and continuity of the detection process, reduce production interruptions caused by equipment failures, and also avoid the possibility that long-term water droplet residue may accelerate the corrosion and aging of the cone lens 3, shortening the service life of the photoelectric liquid level sensor. It can protect the cone lens 3 from damage, extend the service life of the photoelectric liquid level sensor, and reduce replacement and maintenance costs.

[0030] Please see Figure 6 A bracket 46 is fixedly connected to one side of the transmission rod 45 on the assembly plate 7. A bearing seat 47 is fixedly connected to one side of the bracket 46. One side of the transmission rod 45 is rotatably connected to the assembly plate 7 through the bearing seat 47. The fixed connection of the bracket 46 and the bearing seat 47 on the assembly plate 7 realizes the stable rotational connection of the transmission rod 45, ensuring that the transmission rod 45 can remain stable when transmitting power without deviation or shaking, thereby improving the stability of the entire transmission system.

[0031] Please see Figure 4 and Figure 7The pushing component 5 includes a cam plate 51, which is fixedly connected to the transmission rod 45 near the second tooth cone 44. A cam block 52 is movably connected to one side of the cam plate 51. A first spring 55 is fixedly connected to the side of the mounting plate 7 away from the cam block 52. There are two first springs 55, and a linkage block 54 is fixedly connected to the top of the two first springs 55. A guide rod 53 is fixedly connected to the side of the linkage block 54 away from the first spring 55. One side of the guide rod 53 is slidably connected to the mounting plate 7, and the other side of the guide rod 53 is fixedly connected to one side of the cam block 52. By setting the pushing component 5, when the transmission rod 45 rotates, it drives the cam plate 51 to rotate, thereby causing the cam block 52 to reciprocate under the action of the cam plate 51. The linkage block 54 is connected to the mounting plate 7 through the first spring 55. When the cam block 52 moves, it drives the linkage block 54 and the guide rod 53 to slide within the mounting plate 7. This design realizes the reciprocating vibration of the linkage block 54, providing power for the subsequent removal of water droplets on the outer shell of the detector 2.

[0032] Please see Figure 6 A guide sleeve 57 is fixedly connected to one side of the assembly plate 7, and one side of the guide rod 53 is slidably connected to the guide sleeve 57. A ring 56 is fixedly connected to one side of the cam plate 51 inside the assembly plate 7, and one side of the cam plate 51 is embedded and slidably connected inside the ring 56. The guide rod 53 is slidably connected to the assembly plate 7 through the guide sleeve 57, and at the same time, one side of the cam plate 51 is embedded and slidably connected inside the ring 56. This design further enhances the stability of the movement of the cam plate 51 and the linkage block 54, ensuring stable vibration of the mounting block 8.

[0033] Please see Figure 7 The assembly plate 7 has guide grooves 59 on both sides of the linkage block 54. A guide block 58 is slidably connected inside the guide groove 59. One side of the guide block 58 is fixedly connected to one side of the linkage block 54. By setting the guide grooves 59 and guide blocks 58, the stability and accuracy of the linkage block 54 during movement are ensured, preventing the linkage block 54 from shifting or getting stuck during movement, and further improving the stability of the entire system.

[0034] Please see Figure 1The second drive assembly 9 includes a second motor 91, which is fixedly connected to the mounting bracket 1. A first gear 92 is fixedly connected to the output end of the second motor 91. A second gear 93 is meshed with one side of the first gear 92, and a lead screw 94 is fixedly connected to one side of the second gear 93. The lead screw 94 is rotatably connected inside the mounting bracket 1, and one side of the screw block 6 is threaded onto the lead screw 94. By setting up the second drive assembly 9, when the second motor 91 rotates, it drives the lead screw 94 to rotate through gear transmission, thereby causing the screw block 6 to slide on the lead screw 94. This design enables the mounting block 8 to move vertically, facilitating the adjustment of the liquid level sensor's working position and maintenance, thus improving the flexibility of liquid level sensor installation and the convenience of maintenance.

[0035] Please see Figure 5 and Figure 7 The linkage block 54 is fixedly connected to one side of the insertion block 11. The mounting block 8 has a slot 12 inside, which is movably connected to the insertion block 11. A second spring 15 is installed on both sides of the slot 12 inside the mounting block 8. A push block 14 is connected to one side of the second spring 15. A positioning rod 13 is fixedly connected to one side of the push block 14, and one side of the positioning rod 13 is movably connected to the insertion block 11. When the mounting block 8 needs to be removed, the push block 14 is pushed, which causes the second spring 15 to deform. The push block 14 drives the positioning rod 13 to move, so that the positioning rod 13 leaves the insertion block 11. At this time, the insertion block 11 is no longer fixed to the slot 12, and the mounting block 8 can be removed, which facilitates the subsequent maintenance of the liquid level sensor and the reinstallation work after maintenance.

[0036] Please see Figure 8 The mounting block 8 has a third spring 16 installed on both sides of the detector 2. A wiping ring 17 is connected to one side of the third spring 16 and is slidably connected to the detector 2. By setting the third spring 16 and the wiping ring 17, when the mounting block 8 vibrates, the third spring 16 will also vibrate, thereby driving the wiping ring 17 to vibrate, removing water droplets on the outer shell of the detector 2 and preventing the water droplets from falling onto the cone lens 3.

[0037] Please see Figure 1 The mounting bracket 1 has a threaded connection to a stud 18 on one side, a torsion block 19 fixedly connected to one side of the stud 18, and a positioning pad 20 fixedly connected to the other side of the stud 18. By rotating the torsion block 19, the torsion block 19 drives the stud 18 to rotate, so that the stud 18 drives the positioning pad 20 to move and contact the object to be tested, thus installing the mounting bracket 1 on the object to be tested, realizing the rapid installation of the mounting bracket 1.

[0038] The working principle of this utility model is as follows: The mounting bracket 1 is installed on the object to be measured. Rotating the torsion block 19 drives the stud 18 to rotate. The stud 18's rotational movement causes the positioning pad 20 to move, which then adheres to the object to be measured, fixing the mounting bracket 1 in place. Based on the position of the liquid level sensor, the second motor 91 drives the first gear 92 to rotate, which in turn drives the second gear 93 to rotate. The second gear 93 then drives the lead screw 94 to rotate. As the lead screw 94 rotates, it causes the screw block 6 to slide on the mounting bracket 1, causing the screw block 6 to move the assembly plate 7. The assembly plate 7 then moves the mounting block 8, adjusting the working position of the liquid level sensor. To improve the flexibility of liquid level sensor installation, when the water level to be measured drops, some water droplets at the conical lens 3 will flow down along the circumference of the cylinder 10. During this process, the first motor 41 on the assembly plate 7 drives the drive rod 42 to rotate, which in turn drives the first toothed cone 43 to rotate. The first toothed cone 43 drives the second toothed cone 44 to rotate, which in turn drives the transmission rod 45 to rotate. The transmission rod 45 drives the cam plate 51 to rotate, and the rotation of the cam plate 51 can drive the cam block 52 to move. This allows the cam block 52 to drive the guide rod 53 to slide stably under the action of the guide sleeve 57. The guide rod 53 then drives the bottom... The linkage block 54 moves inside the assembly plate 7, pushing the first spring 55 to deform. When the cam block 52 is no longer in contact with the cam plate 51, the first spring 55 returns to its original position, causing the linkage block 54 to vibrate reciprocally, thereby driving the liquid level sensor inside the mounting block 8 to vibrate. When the mounting block 8 vibrates, the third spring 16 also vibrates, driving the wiping ring 17 to move, which can speed up the removal of water droplets on the detector 2 housing, preventing water droplets remaining on the detector 2 housing from subsequently falling onto the conical lens 3. Therefore, it speeds up the sliding of the conical lens 3 off the cylinder 10 and speeds up the falling of water droplets on the cylinder 10. By effectively removing these water droplets, it can ensure the subsequent... The photoelectric liquid level sensor receives more accurate light signals, thereby improving the accuracy of liquid level measurement and greatly enhancing the detection accuracy and reliability of the photoelectric liquid level sensor. When maintenance of the liquid level sensor is required, the second motor 91 drives the first gear 92 to rotate, the first gear 92 drives the second gear 93 to rotate, and the second gear 93 drives the lead screw 94 to rotate, which drives the screw block 6 to slide on the mounting bracket 1, causing the mounting block 8 to move upward away from the area to be measured. Then, the push block 14 is pushed, which causes the second spring 15 to deform, driving the positioning rod 13 away from the insert block 11. Then, it can be removed outward to maintain the liquid level sensor.

Claims

1. A photoelectric liquid level sensor with a water droplet elimination structure, characterized in that, The device includes a mounting bracket, a screw block slidably connected to one side of the mounting bracket, an assembly plate fixedly connected to one side of the screw block, a mounting block mounted on one side of the assembly plate, a first driving assembly on one side of the assembly plate, a pushing assembly on one side of the first driving assembly, a mounting block mounted on one side of the pushing assembly, a second driving assembly on one side of the mounting bracket, the screw block slidably connected to the mounting bracket via the second driving assembly, a detector mounted on one side of the mounting block, a conical lens mounted on one side of the detector, and a cylinder fitted to one side of the conical lens, the cylinder being installed inside the mounting block. The first drive assembly includes a first motor, which is fixedly connected to one side of the assembly plate. A drive rod is fixedly connected to the output end of the first motor. A first toothed bevel is fixedly connected to one side of the drive rod. A second toothed bevel is meshed with one side of the first toothed bevel. A transmission rod is fixedly connected to one side of the second toothed bevel. One side of the push assembly is mounted on the transmission rod.

2. The photoelectric liquid level sensor with a water droplet elimination structure according to claim 1, characterized in that, A bracket is fixedly connected to one side of the transmission rod on the assembly plate, and a bearing is fixedly connected to one side of the bracket. One side of the transmission rod is rotatably connected to the assembly plate through the bearing.

3. The photoelectric liquid level sensor with a water droplet elimination structure according to claim 1, characterized in that, The pushing assembly includes a cam plate, which is fixedly connected to the transmission rod near the second tooth cone. A cam block is movably connected to one side of the cam plate. A first spring is fixedly connected to the side of the assembly plate away from the cam block. There are two first springs. A linkage block is fixedly connected to the top of the two first springs. A guide rod is fixedly connected to the side of the linkage block away from the first spring. One side of the guide rod is slidably connected to the assembly plate. One side of the guide rod is fixedly connected to one side of the cam block.

4. A photoelectric liquid level sensor with a water droplet elimination structure according to claim 3, characterized in that, A guide sleeve is fixedly connected to one side of the assembly plate, and one side of the guide rod is slidably connected to the guide sleeve.

5. A photoelectric liquid level sensor with a water droplet elimination structure according to claim 3, characterized in that, A ring is fixedly connected to one side of the cam plate inside the assembly plate, and one side of the cam plate is slidably embedded inside the ring.

6. A photoelectric liquid level sensor with a water droplet elimination structure according to claim 3, characterized in that, The assembly plate has guide grooves on both sides of the linkage block, and guide blocks are slidably connected inside the guide grooves. One side of the guide block is fixedly connected to one side of the linkage block.

7. A photoelectric liquid level sensor with a water droplet elimination structure according to claim 1, characterized in that, The second drive assembly includes a second motor, which is fixedly connected to the mounting bracket. A first gear is fixedly connected to the output end of the second motor. A second gear is meshed with one side of the first gear. A lead screw is fixedly connected to one side of the second gear. The lead screw is rotatably connected inside the mounting bracket. One side of the screw block is threadedly connected to the lead screw.

8. A photoelectric liquid level sensor with a water droplet elimination structure according to claim 3, characterized in that, A plug is fixedly connected to one side of the linkage block. A slot is provided inside the mounting block. The slot is movably connected to the plug. A second spring is installed on both sides of the slot inside the mounting block. A push block is connected to one side of the second spring. A positioning rod is fixedly connected to one side of the push block. One side of the positioning rod is movably connected to the plug.

9. A photoelectric liquid level sensor with a water droplet elimination structure according to claim 1, characterized in that, A third spring is installed on both sides of the detector within the mounting block. A wiping ring is connected to one side of each third spring and is slidably connected to the detector.

10. A photoelectric liquid level sensor with a water droplet elimination structure according to claim 1, characterized in that, A stud is threaded to one side of the mounting bracket, a torsion block is fixedly connected to one side of the stud, and a positioning pad is fixedly connected to the other side of the stud.

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