Adjustable photoelectric liquid level sensor

Abstract

The utility model discloses an adjustable photoelectric liquid level sensor, which relates to the technical field of photoelectric liquid level sensors and comprises a mounting plate, one side of the mounting plate is rotatably connected with a limiting plate, the other side of the limiting plate is rotatably connected with a first rotating shaft, and the other side of the first rotating shaft is fixedly connected to one side of the mounting plate. By adopting the structure, when the angle of the sensor shell needs to be adjusted, the limiting plate is rotated through the first rotating shaft, and after the angle of the sensor shell is adjusted, the magnet and the iron block are mutually attracted to avoid the angle deviation of the limiting plate, so that the purpose of conveniently adjusting the angle of the sensor shell can be achieved; when the height of the sensor shell needs to be adjusted, a user can screw the screw rod, the second rotating shaft can enable the tail end of the screw rod to rotate in situ, the connecting block can slide upwards or downwards through the second sliding groove, and then the purpose of conveniently adjusting the height of the sensor shell can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of photoelectric liquid level sensors, in particular to an adjustable photoelectric liquid level sensor. Background Art

[0002] The photoelectric liquid level sensor uses the principle of reflection and refraction of light at the interface of two different media. It is a new type of contact point liquid level measurement and control device that can perform single-point detection and has TTL-compatible digital level signal output. It is suitable for production in industries such as transportation and military. The photoelectric liquid level switch contains a near-infrared light-emitting diode and a photosensitive receiver. The light emitted by the light-emitting diode is directed into the lens on the top of the sensor. When the liquid submerges the lens of the photoelectric liquid level switch, the light is refracted into the liquid, so that the receiver cannot receive or can only receive a small amount of light. The photoelectric liquid level switch senses this change in working condition, and the receiver can drive the internal electrical switch to activate the external alarm or control circuit. If there is no liquid, the light emitted by the light-emitting diode is directly reflected from the lens back to the receiver.

[0003] A Chinese patent with announcement number "CN212871391U" discloses a photoelectric liquid level sensor, including a sensor housing, which is inserted into the interior of a mounting wall, and one end of the sensor housing is located on the inner side of the mounting wall and is connected to an end ring, one end of the end ring is connected to a lens, a near-infrared light-emitting diode is installed on the side of the interior of the sensor housing close to the lens, and a photosensitive receiver is installed on the side of the interior of the sensor housing close to the near-infrared light-emitting diode, and a conical ring is provided on the outer wall of the sensor housing close to the inner wall of the mounting wall.

[0004] However, this sensor still has some shortcomings. Since the sensor housing needs to be installed on the mounting wall, the height and angle of the entire sensor housing cannot be adjusted. If the height or angle of the sensor housing installation point is offset, the user needs to remove the entire sensor housing and reinstall it. At the same time, it will be affected by the inaccurate height or angle of the sensor housing, which will seriously affect the sensor's own detection effect on liquids. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide an adjustable photoelectric liquid level sensor to solve the problems raised by the above background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] The adjusting screw thread of the fixing plate is fixed on the fixing plate, and the fixing plate is fixed on the fixing plate to the fixing surface. The top of the second rotating shaft is connected to one side of the connecting block, and the sensor housing is fixedly connected to the inner bottom end of the sensor housing. The sensor body is installed, and the bottom end of the sensor housing is installed. The shell cover is clamped on the top of the sensor housing, and the top of the shell cover is threadedly connected to the support plate. The top of the support plate is installed with a collection terminal, and the top of the collection terminal is installed with a cable. The top of the cable is installed with a wiring terminal, and it is fixed to the mounting wall through the mounting plate. The setting of the first rotating shaft can facilitate the adjustment of the limit plate angle, and the limit plate can drive the sensor housing to rotate together, which is conducive to adjusting the angle of the sensor housing. Through the setting of the second slide groove, the screw can be rotated to push or pull the connecting block to move, and the height of the connecting block changes, and the height of its sensor housing will also change accordingly, which is conducive to the user to adjust the height of the sensor housing.

[0008] As an optimal technical solution, a positioning hole is opened on one side of the mounting plate, and the positioning holes are opened on the four sides of one side of the mounting plate near the corners. A groove is opened on the other side of the mounting plate, and a rubber pad is fixedly connected to the inner side of the groove. The position of the other side of the rubber pad is on the same horizontal line as the position of the other side of the mounting plate. By opening the positioning holes, it is convenient for the user to install and fix the point of the mounting plate. The rubber pad has good rubber shock absorption ability, which can improve the stability of the fixed position of the mounting plate.

[0009] As a preferred technical solution, a first slide groove is provided on the other side of the limit plate, and the shape of the first slide groove is circular. A slider is slidably connected to the inner side of the first slide groove, and the other side of the slider is fixedly connected to one side of the mounting plate. The first rotating shaft is located close to the inner side of the slider. Through the installation of the slider, the other side of the limit plate can be effectively supported and limited, thereby improving the stability of the angle adjustment of the sensor housing.

[0010] As an optimal technical solution, a card slot is provided at the top of the sensor housing, and a card block matching the card slot is fixedly connected to the bottom end of the shell cover. The card block is clamped into the inside of the card slot, and the shell cover is clamped to the top of the sensor housing through the card slot and the card block. By clamping the card block in, the user can easily disassemble and install the shell cover.

[0011] As an optimal technical solution, the bottom end of the shell cover is fixedly connected to a first sealing ring, and the top of the sensor housing is provided with a limiting groove matching the first sealing ring. The first sealing ring covers the inner side of the limiting groove. Through the setting of the first sealing ring, the connection point between the shell cover and the sensor housing can be effectively sealed.

[0012] As an optimal technical solution, a third screw hole is provided at the top of the shell cover, and a connecting frame is fixedly connected to the bottom end of the support plate. An external thread matching the third screw hole is provided on the outer wall of the connecting frame. The connecting frame is threadedly connected to the inner side of the third screw hole through the external thread. The support plate is threadedly connected to the top of the shell cover through the third screw hole, the connecting frame and the external thread. By screwing in the connecting frame, the position of the support plate can be effectively fixed, which also facilitates the user to disassemble and install the support plate later.

[0013] As an optimal technical solution, the bottom end of the support plate is fixedly connected to a second sealing ring, the connecting frame is located on the inner side close to the second sealing ring, and the bottom end of the second sealing ring is in contact with the top end of the shell cover. Through the setting of the second sealing ring, the connection point between the support plate and the shell cover can be effectively sealed.

[0014] As an optimal technical solution, a first screw hole is provided at the top of the fixing block, and the first screw holes pass through the top of the fixing block and the limiting plate. The inner side of the first screw hole is threadedly connected with a bolt, and the bottom end of the bolt is threadedly connected to the inside of the limiting plate through the first screw hole. The fixing block is threadedly connected to the top of the limiting plate through the first screw hole and the bolt. By screwing in the bolt, the position of the fixing block can be effectively fixed, and it is also convenient for the user to remove the fixing block later.

[0015] As a preferred technical solution, the outer wall of the sensor housing is coated with an anti-corrosion coating, and the anti-corrosion coating on the outer wall of the sensor housing covers the sensor housing. By applying the anti-corrosion coating, the corrosion resistance of the outer wall of the sensor housing can be improved.

[0016] In summary, the present invention has the following beneficial effects:

[0017] First, when in use, the mounting plate is fixed to the mounting wall. When the angle of the sensor housing needs to be adjusted, the user can rotate the limit plate through the first rotating shaft. When the angle of the limit plate changes, the angle of the sensor housing will also change accordingly. When the angle adjustment of the sensor housing is completed, the mutual adsorption of the magnet and the iron block can prevent the limit plate from angular deviation, thereby achieving the purpose of conveniently adjusting the angle of the sensor housing. When the height of the sensor housing needs to be adjusted, the user can twist the screw, and the second rotating shaft can make the end of the screw rotate in place, and the connecting block will slide up or down through the second sliding groove, thereby also achieving the purpose of conveniently adjusting the height of the sensor housing.

[0018] Secondly, due to the presence of the card block, the card block can be effectively clamped and fixed to the position of the shell cover, which can prevent the shell cover from being displaced. When the shell cover is closed, its first sealing ring will also effectively seal the connection point between the shell cover and the sensor housing, thereby effectively improving the sealing between the two. At the same time, it is also beneficial for the user to remove the shell cover later to maintain the internal structure of the sensor housing. The support plate is fixed with threads. When the user needs to remove the support plate later, the connection frame can be unscrewed out of the third screw hole through the thread principle, which is also beneficial for the user to check and maintain components such as the hub terminal later. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the mounting plate structure of the utility model;

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

[0023] Figure 5 This is a schematic diagram of the top structure of the sensor housing of the present utility model;

[0024] Figure 6 This utility model Figure 5 A schematic diagram of the enlarged structure of part A;

[0025] Figure 7 This is a schematic diagram of the bottom structure of the shell cover of the utility model;

[0026] Figure 8 It is a structural schematic diagram of the support plate of the present utility model.

[0027] Figure markings: 1. Mounting plate; 2. Positioning hole; 3. Groove; 4. Rubber pad; 5. Iron ring; 6. Limiting plate; 7. First rotating shaft; 8. Magnet; 9. First slide groove; 10. Slider; 11. Connecting block; 12. Second slide groove; 13. Fixing block; 14. First screw hole; 15. Bolt; 16. Second rotating shaft; 17. Screw; 18. Second screw hole; 19. Sensor housing; 20. Lens; 21. Sensor body; 22. Limiting groove; 23. Card slot; 24. Shell cover; 25. Card block; 26. First sealing ring; 27. Third screw hole; 28. Support plate; 29. ​​Second sealing ring; 30. Connecting frame; 31. External thread; 32. Hub terminal; 33. Cable; 34. Wiring terminal. DETAILED DESCRIPTION

[0028] Example

[0029] refer to Figures 1 to 8, the adjustable photoelectric liquid level sensor described in this embodiment includes a mounting plate 1, one side of the mounting plate 1 is rotatably connected to a limit plate 6, the other side of the limit plate 6 is rotatably connected to a first rotating shaft 7, the other side of the first rotating shaft 7 is fixedly connected to one side of the mounting plate 1, the limit plate 6 is rotatably connected to one side of the mounting plate 1 through the first rotating shaft 7, one side of the mounting plate 1 is fixedly connected to an iron ring 5, the other side of the limit plate 6 is fixedly connected to a magnet 8 matching the iron ring 5, the position of the magnet 8 is symmetrical to the position of the iron ring 5, one side of the limit plate 6 is slidably connected to a connecting block 11, and the other side of the limit plate 6 is provided with a A second slide groove 12 matching the connecting block 11, the connecting block 11 is slidably connected to one side of the limit plate 6 through the second slide groove 12, the top of the limit plate 6 is threadedly connected to the fixing block 13, the top of the fixing block 13 is provided with a second screw hole 18, the top of the connecting block 11 is rotatably connected to the second rotating shaft 16, the inner side of the second screw hole 18 is threadedly connected to the screw 17, the bottom end of the screw 17 is fixedly connected to the top of the second rotating shaft 16, one side of the connecting block 11 is fixedly connected to the sensor housing 19, the inner bottom end of the sensor housing 19 is installed with a sensor body 21, and the bottom end of the sensor housing 19 is installed with The lens 20 and the top of the sensor housing 19 are clamped with a shell cover 24, and the top of the shell cover 24 is threadedly connected to a support plate 28. The top of the support plate 28 is installed with a collection terminal 32, and the top of the collection terminal 32 is installed with a cable 33. The top of the cable 33 is installed with a wiring terminal 34. When in use, the position of the mounting plate 1 is fixed. Due to the existence of the first rotating shaft 7, when it is necessary to adjust the angle of the sensor housing 19, the user can rotate the limit plate 6 through the first rotating shaft 7. The limit plate 6 can drive the connecting block 11 to rotate together. When the angle of the limit plate 6 changes, the angle of the sensor housing 19 will also change. As a result, changes occur. When the angle adjustment of the sensor housing 19 is completed, the mutual adsorption of the magnet 8 and the iron block can prevent the limit plate 6 from angular deviation, thereby achieving the purpose of conveniently adjusting the angle of the sensor housing 19. When the height of the sensor housing 19 needs to be adjusted, the user can turn the screw 17, and the second rotating shaft 16 can make the end of the screw 17 rotate in place, and the connecting block 11 will slide up or down through the second slide groove 12, thereby achieving the purpose of conveniently adjusting the height of the sensor housing 19, and at the same time, it can also effectively improve the accuracy of the user when using the sensor body 21.

[0030] refer to Figure 1 and Figure 2A positioning hole 2 is provided on one side of the mounting plate 1. The positioning holes 2 are provided on the four sides of the corners of one side of the mounting plate 1. A groove 3 is provided on the other side of the mounting plate 1. A rubber pad 4 is fixedly connected to the inner side of the groove 3. The position of the other side of the rubber pad 4 is on the same horizontal line as the position of the other side of the mounting plate 1. Due to the opening of the positioning hole 2, when fixing the position of the mounting plate 1, the user can use a positioning piece matching the positioning hole 2 to fix the position of the mounting plate 1. Due to the presence of the rubber pad 4, the rubber pad 4 is a rubber product with good anti-slip ability and rubber shock absorption ability, which can effectively improve the stability of the fixed position of the mounting plate 1.

[0031] refer to Figures 1 to 4 A first slide groove 9 is provided on the other side of the limit plate 6. The first slide groove 9 is circular in shape. A slider 10 is slidably connected to the inner side of the first slide groove 9. The other side of the slider 10 is fixedly connected to one side of the mounting plate 1. The first rotating shaft 7 is located on the inner side close to the slider 10. Due to the existence of the slider 10, the slider 10 can provide secondary support and limit the other side of the limit plate 6 without interfering with the adjustment of the angle of the sensor housing 19, thereby effectively improving the stability of the angle adjustment of the sensor housing 19.

[0032] refer to Figure 5 and Figure 7 The top of the sensor housing 19 is provided with a slot 23, and the bottom end of the shell cover 24 is fixedly connected with a block 25 that matches the slot 23. The block 25 is clamped into the inside of the slot 23, and the shell cover 24 is clamped to the top of the sensor housing 19 through the slot 23 and the block 25. The bottom end of the shell cover 24 is fixedly connected with a first sealing ring 26. The top of the sensor housing 19 is provided with a limiting groove 22 that matches the first sealing ring 26. The first sealing ring 26 covers the inner side of the limiting groove 22. Due to the existence of the block 25, the carding of the block 25 can effectively clamp and fix the position of the shell cover 24, which can prevent the shell cover 24 from displacement. When the shell cover 24 is closed, its first sealing ring 26 will also effectively seal the connection point between the shell cover 24 and the sensor housing 19, thereby effectively improving the sealing between the two, and also facilitates the user to remove the shell cover 24 later to maintain the internal structure of the sensor housing 19.

[0033] refer to Figure 7 and Figure 8A third screw hole 27 is provided at the top of the shell cover 24, and a connecting frame 30 is fixedly connected to the bottom end of the support plate 28. An external thread 31 matching the third screw hole 27 is provided on the outer wall of the connecting frame 30. The connecting frame 30 is threadedly connected to the inner side of the third screw hole 27 through the external thread 31, and the support plate 28 is threadedly connected to the top of the shell cover 24 through the third screw hole 27, the connecting frame 30 and the external thread 31. Because the support plate 28 is fixed by threads, when the user needs to remove the support plate 28 later, the connecting frame 30 can be unscrewed out of the third screw hole 27 through the thread principle, which is also convenient for the user to check and maintain components such as the hub terminal 32 later.

[0034] refer to Figure 7 and Figure 8 The bottom end of the support plate 28 is fixedly connected to a second sealing ring 29, and the connecting frame 30 is located on the inner side close to the second sealing ring 29. The bottom end of the second sealing ring 29 is in contact with the top end of the shell cover 24. Due to the existence of the second sealing ring 29, when the position of the support block is fixed, the second sealing ring 29 can effectively seal the connection point between the support block and the shell cover 24, thereby effectively improving the overall sealing of the sensor housing 19.

[0035] refer to Figure 5 and Figure 6 The top of the fixing block 13 is provided with a first screw hole 14, and the first screw hole 14 passes through the fixing block 13 and the top of the limiting plate 6. The inner side of the first screw hole 14 is threadedly connected with a bolt 15, and the bottom end of the bolt 15 is threadedly connected to the inside of the limiting plate 6 through the first screw hole 14. The fixing block 13 is threadedly connected to the top of the limiting plate 6 through the first screw hole 14 and the bolt 15. Due to the presence of the bolt 15, the screwing of the bolt 15 can effectively fix and limit the position of the fixing block 13, thereby preventing the fixing block 13 from shifting. When the fixing block 13 needs to be removed, the bolt 15 can be screwed out of the first screw hole 14. After the fixing block 13 is removed, its connecting block 11 can also be directly withdrawn through the second slide groove 12, which is also convenient for the user to disassemble the sensor housing 19 for maintenance later.

[0036] refer to Figure 1 The outer wall of the sensor housing 19 is coated with an anti-corrosion coating. The anti-corrosion coating on the outer wall of the sensor housing 19 covers the sensor housing 19. Due to the presence of the anti-corrosion coating, the anti-corrosion coating is an anti-corrosion paint, which can effectively improve the corrosion resistance of the sensor housing 19, thereby effectively improving the service life of the sensor housing 19.

[0037] Principle and advantages of use: When in use, the position of the mounting plate 1 is fixed. Due to the existence of the first rotating shaft 7, when the angle of the sensor housing 19 needs to be adjusted, the user can rotate the limit plate 6 through the first rotating shaft 7, and the limit plate 6 can drive the connecting block 11 to rotate together. The angle of the limit plate 6 changes, and the angle of the sensor housing 19 will also change accordingly. When the angle adjustment of the sensor housing 19 is completed, the mutual adsorption of the magnet 8 and the iron block can avoid the angle deviation of the limit plate 6, thereby achieving the purpose of conveniently adjusting the angle of the sensor housing 19. When the height of the sensor housing 19 needs to be adjusted, the user can screw the screw 17, and the second rotating shaft 16 can make the end of the screw 17 rotate in place, while the connecting block 11 will then slide upward or downward through the second slide groove 12, thereby achieving the purpose of conveniently adjusting the height of the sensor housing 19, and at the same time, it can effectively improve the accuracy of the user when using the sensor body 21. Due to the opening of the positioning hole 2, when fixing the position of the mounting plate 1, the user can use a positioning piece that matches the positioning hole 2 to fix the position of the mounting plate 1. Due to the presence of the rubber pad 4, the rubber pad 4 is a rubber product with good anti-slip ability and rubber shock absorption ability, thereby effectively improving the stability of the fixed position of the mounting plate 1. Due to the presence of the slider 10, the slider 10 can provide secondary support and limit the other side of the limit plate 6 without hindering the adjustment of the angle of the sensor housing 19, thereby It can effectively improve the stability of the angle adjustment of the sensor housing 19. Due to the existence of the block 25, the block 25 can be inserted to effectively fix the position of the shell cover 24, which can prevent the shell cover 24 from being displaced. When the shell cover 24 is closed, its first sealing ring 26 will also effectively seal the connection point between the shell cover 24 and the sensor housing 19, thereby effectively improving the sealing between the two. At the same time, it is also convenient for the user to remove the shell cover 24 later to maintain the internal structure of the sensor housing 19. Because the support plate 28 is fixed by threads, when the user needs to remove the support plate 28 later, the connection frame 30 can be screwed out of the third screw hole 27 through the thread principle, which is also convenient for the user to remove the support plate 28 later. Check and maintain components such as the collection terminal 32. Due to the presence of the second sealing ring 29, when the support block is fixed, the second sealing ring 29 can effectively seal the connection point between the support block and the shell cover 24, thereby effectively improving the overall sealing of the sensor housing 19. Due to the presence of the bolt 15, the screwing of the bolt 15 can effectively fix and limit the position of the fixing block 13, thereby preventing the fixing block 13 from being displaced. When the fixing block 13 needs to be removed, the bolt 15 can be screwed out of the first screw hole 14. After the fixing block 13 is removed, its connecting block 11 can also be directly pulled out through the second slide groove 12, which is also convenient for the user to disassemble the sensor housing 19 for maintenance later.

Claims

1. An adjustable photoelectric liquid level sensor, comprising a mounting plate, characterized in that: One side of the mounting plate is rotatably connected to the limit plate, and the other side of the limit plate is rotatably connected to the first rotating shaft, and the other side of the first rotating shaft is fixedly connected to one side of the mounting plate, and the limit plate is rotatably connected to one side of the mounting plate through the first rotating shaft, and one side of the mounting plate is fixedly connected to an iron ring, and the other side of the limit plate is fixedly connected to a magnet matching the iron ring, and the position of the magnet is symmetrical with the position of the iron ring, and one side of the limit plate is slidably connected to a connecting block, and the other side of the limit plate is provided with a second sliding groove matching the connecting block, and the connecting block is slidably connected to one side of the limit plate through the second sliding groove, and the top screw of the limit plate The thread is connected to a fixing block, a second screw hole is opened at the top of the fixing block, the top of the connecting block is rotatably connected to the second rotating shaft, the inner side of the second screw hole is threadedly connected to a screw, the bottom end of the screw is fixedly connected to the top of the second rotating shaft, one side of the connecting block is fixedly connected to the sensor housing, the inner bottom end of the sensor housing is installed with a sensor body, the bottom end of the sensor housing is installed with a lens, the top end of the sensor housing is clamped with a shell cover, the top end of the shell cover is threadedly connected to a support plate, the top of the support plate is installed with a collection terminal, the top of the collection terminal is installed with a cable, and the top of the cable is installed with a wiring terminal.

2. The adjustable photoelectric liquid level sensor according to claim 1, characterized in that: A positioning hole is provided on one side of the mounting plate, and the positioning holes are provided on the four sides of the mounting plate near the corners. A groove is provided on the other side of the mounting plate, and a rubber pad is fixedly connected to the inner side of the groove. The position of the other side of the rubber pad is on the same horizontal line as the position of the other side of the mounting plate.

3. The adjustable photoelectric liquid level sensor according to claim 1, characterized in that: A first slide groove is provided on the other side of the limit plate, and the shape of the first slide groove is circular. A slider is slidably connected to the inner side of the first slide groove, and the other side of the slider is fixedly connected to one side of the mounting plate. The first rotating shaft is located close to the inner side of the slider.

4. The adjustable photoelectric liquid level sensor according to claim 1, characterized in that: The top of the sensor housing is provided with a card slot, the bottom of the shell cover is fixedly connected with a card block matching the card slot, the card block is clamped inside the card slot, and the shell cover is clamped to the top of the sensor housing through the card slot and the card block.

5. The adjustable photoelectric liquid level sensor according to claim 4, characterized in that: The bottom end of the shell cover is fixedly connected with a first sealing ring, the top end of the sensor housing is provided with a limiting groove matching the first sealing ring, and the first sealing ring covers the inner side of the limiting groove.

6. The adjustable photoelectric liquid level sensor according to claim 1, characterized in that: A third screw hole is provided at the top of the shell cover, and a connecting frame is fixedly connected to the bottom end of the support plate. An external thread matching the third screw hole is provided on the outer wall of the connecting frame. The connecting frame is threadedly connected to the inner side of the third screw hole through the external thread, and the support plate is threadedly connected to the top of the shell cover through the third screw hole, the connecting frame and the external thread.

7. The adjustable photoelectric liquid level sensor according to claim 6, characterized in that: The bottom end of the support plate is fixedly connected with a second sealing ring, the connection frame is located close to the inner side of the second sealing ring, and the bottom end of the second sealing ring is in contact with the top end of the shell cover.

8. The adjustable photoelectric liquid level sensor according to claim 1, characterized in that: A first screw hole is provided at the top of the fixing block, and the first screw hole passes through the top of the fixing block and the limiting plate. A bolt is threadedly connected to the inner side of the first screw hole, and the bottom end of the bolt is threadedly connected to the inside of the limiting plate through the first screw hole. The fixing block is threadedly connected to the top of the limiting plate through the first screw hole and the bolt.

9. The adjustable photoelectric liquid level sensor according to claim 1, characterized in that: The outer wall of the sensor housing is coated with an anti-corrosion coating, and the anti-corrosion coating on the outer wall of the sensor housing covers the sensor housing.

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