A liquid level sensing device

Abstract

The utility model belongs to the field of sensor technology, and specifically discloses a liquid level sensor device, including a sensor base, on which electronic components are arranged, a retaining cylinder fixedly connected to the bottom of the sensor base, a rotating rod rotatably connected to the inner surface of the retaining cylinder, a rotating plate arranged at the bottom of the rotating rod, a sealing cover detachably installed on the top of the sensor base through a quick retaining mechanism, and a sealing layer is arranged on the top of the sensor base and the bottom of the sealing cover. When disassembling and assembling the sensor sealing cover to quickly inspect and maintain the inside of the sensor, the liquid level sensor device considers that it may be relatively inconvenient to tighten or loosen the screws with a screwdriver in a narrow space, and the operation is easily restricted, so a quick retaining mechanism is designed, which can quickly complete the disassembly and maintenance of the sensor without using tools such as screwdrivers and wrenches, thereby reducing the restrictions on the use scenarios of the device.

Description

Technical Field

[0001] The present application relates to the field of sensor technology, and in particular to a liquid level sensor device. Background Art

[0002] Liquid level sensing devices are liquid level sensors, which are devices used to measure the liquid level height or liquid surface position. They use various sensing technologies to monitor the liquid level changes in real time and convert these changes into usable electrical signals or digital signal outputs for monitoring, control or automation systems. Rotary liquid level sensors are a type of liquid level sensor.

[0003] Rotary liquid level sensors generally adopt an integrated design and are fixed with screws. The first design method makes it difficult to disassemble the sensor for maintenance, while the second design method uses multiple sets of screws to fix the sensor housing on the sensor base. When opening the sensor housing for maintenance, tools such as wrenches or screwdrivers are required. The use process is cumbersome and the use scenarios are easily restricted. Utility Model Content

[0004] In view of this, the purpose of the present invention is to solve the shortcomings of the background technology and to provide a liquid level sensor device to solve the problems in the prior art.

[0005] To achieve the above purpose, the utility model provides a liquid level sensing device, including a sensor base, on which electronic components are arranged, a retaining cylinder is fixedly connected to the bottom of the sensor base, a rotating rod is rotatably connected to the inner surface of the retaining cylinder, a rotating plate is arranged at the bottom of the rotating rod, a sealing cover is detachably installed on the top of the sensor base through a quick retaining mechanism, and a sealing layer is arranged on the top of the sensor base and the bottom of the sealing cover, and the sealing layer is made of rubber material and has good sealing performance.

[0006] Preferably, the quick retaining mechanism comprises an insertion rod fixedly connected to the bottom of the sealing cover, and a rubber pad is provided on the outer surface of the insertion rod. The quick retaining mechanism can quickly disassemble and assemble the sealing cover without the aid of tools such as screwdrivers and wrenches.

[0007] Preferably, the outer surface of the sensor base is fixedly connected to a limiting cylinder, the top of the limiting cylinder is fixedly connected to a bracket, and the inner surface of the limiting cylinder is movably plugged with the outer surface of the insertion rod.

[0008] Preferably, a frame shaft is fixedly provided on the inner side of the bracket, and a hoop frame is rotatably connected to the outer surface of the frame shaft.

[0009] Preferably, a groove is provided on the outer surface of the hoop frame, and a rotating shaft is rotatably connected to the inner surface of the clamp frame. The design of the groove allows a screw to be embedded, so as to facilitate fixing the hoop frame.

[0010] Preferably, a screw is fixedly connected to the outer surface of the rotating shaft, and a butterfly nut is threadedly sleeved on the outer surface of the screw.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. When disassembling and assembling the sensor sealing cover for quick inspection and maintenance of the inside of the sensor, the liquid level sensor device is designed with a quick retaining mechanism, which can quickly complete the disassembly and maintenance of the sensor without using tools such as screwdrivers and wrenches, reducing restrictions on the use scenarios of the device.

[0013] 2. The liquid level sensing device can adjust the measurement position by rotating the rotating rod on the inner surface of the retaining cylinder to drive the rotating plate to rotate synchronously. During this process, the liquid level sensor can cover the entire surface of the liquid, ensuring that the liquid level sensor can accurately measure the overall liquid level height of the liquid, avoiding measurement errors caused by uneven liquid surface, and improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the top structure of the sensor base of this application;

[0016] Figure 3 This is a schematic diagram of the surface structure of the card rack of this application.

[0017] Among them: 1. sensor base; 2. electronic components; 3. retaining cylinder; 4. rotating rod; 5. rotating plate; 6. sealing cover; 7. plug rod; 8. rubber pad; 9. limiting cylinder; 10. bracket; 11. frame shaft; 12. hoop frame; 13. groove; 14. rotating shaft; 15. screw; 16. butterfly nut. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] See also Figure 1-3A liquid level sensing device comprises a sensor base 1, on which an electronic component 2 is arranged, a retaining cylinder 3 is fixedly connected to the bottom of the sensor base 1, a rotating rod 4 is rotatably connected to the inner surface of the retaining cylinder 3, a rotating plate 5 is arranged at the bottom of the rotating rod 4, a sealing cover 6 is detachably installed on the top of the sensor base 1 through a quick retaining mechanism, and a sealing layer is arranged on the top of the sensor base 1 and the bottom of the sealing cover 6.

[0020] Through the above technical solution, during use of the sensor device, the rotating plate 5 is driven to rotate by the rotating rod 4, and the liquid level sensor can cover the entire surface of the liquid, rather than just a part of the liquid surface, ensuring that the liquid level sensor can accurately measure the overall liquid level height of the liquid, and the sealing cover 6 can be quickly disassembled and assembled through the quick clamping mechanism so that it can be quickly maintained without the aid of tools.

[0021] Specifically, the quick retaining mechanism includes an insert rod 7 fixedly connected to the bottom of the sealing cover 6 , and a rubber pad 8 is provided on the outer surface of the insert rod 7 .

[0022] Through the above technical solution, the rubber pad 8 is set at the fixed position of the insertion rod 7. When the insertion rod 7 is fully inserted into the limiting tube 9, the rubber pad 8 is located between the clamp frame 10 and the hoop frame 12.

[0023] Specifically, the outer surface of the sensor base 1 is fixedly connected to the limiting cylinder 9 , the top of the limiting cylinder 9 is fixedly connected to the bracket 10 , and the inner surface of the limiting cylinder 9 is movably plugged with the outer surface of the insertion rod 7 .

[0024] Through the above technical solution, four groups of limit cylinders 9 are designed, and the corresponding insertion rods 7 and components such as the clamping frame 10 and the hoop frame 12 are arranged in the same number and are evenly distributed on the sensor base 1.

[0025] Specifically, a frame shaft 11 is fixedly provided on the inner side of the bracket 10 , and a hoop frame 12 is rotatably connected to the outer surface of the frame shaft 11 .

[0026] Through the above technical solution, the clamp frame 12 can rotate along the frame axis 11 to gradually approach the insertion rod 7, and finally cooperate with the clamp frame 10 to stably clamp the insertion rod 7.

[0027] Specifically, a groove 13 is formed on the outer surface of the hoop frame 12 , and a rotating shaft 14 is rotatably connected to the inner surface of the clamp frame 10 .

[0028] Through the above technical solution, the rotating shaft 14 can drive the screw rod 15 to rotate during the rotation process and make it embed into the groove 13.

[0029] Specifically, a screw rod 15 is fixedly connected to the outer surface of the rotating shaft 14 , and a butterfly nut 16 is threadedly sleeved on the outer surface of the screw rod 15 .

[0030] Through the above technical solution, the butterfly nut 16 can be screwed to move axially along the surface of the screw rod 15, and when the butterfly nut 16 is tightly pressed against the surface of the hoop 12, it can be in a stable state.

[0031] Working principle: During the use of the rotary liquid level sensor in the present application, considering the diversity of container shapes, some containers may be cylindrical, while others may be non-cylindrical. By rotating the rotating rod 4 on the inner surface of the retaining tube 3 to drive the rotating plate 5 to rotate synchronously, the measurement position can be adjusted and the measurement information can be transmitted to the electronic component 2 area. During this process, the liquid level sensor can cover the entire surface of the liquid, not just a part of the liquid surface, ensuring that the liquid level sensor can accurately measure the overall liquid level height of the liquid and avoiding measurement errors caused by uneven liquid surface. The liquid level sensor can adapt to containers of different shapes to ensure accurate liquid level measurement in various containers, thereby improving the applicability of the device. In order to stably install the sealing cover 6 and place it on the top of the sensor base 1 to play a protective role, the insertion rod 7 can be inserted into the corresponding limiting tube 9 at this time. When the plug rod 7 is fully inserted into the limiting tube 9, the rubber pad 8 is located between the bracket 10 and the hoop bracket 12, and the hoop bracket 12 can be rotated along the bracket axis 11, and the hoop bracket 12 will gradually approach the plug rod 7, and finally cooperate with the bracket 10 to tightly clamp the rubber pad 8 on the plug rod 7, and then quickly turn the screw 15 to make the rotating shaft 14 rotate until the screw 15 is completely embedded in the groove 13, and the butterfly nut 16 can be screwed along the screw 15, and the butterfly nut 16 will move axially along the surface of the screw 15. When the butterfly nut 16 is tightly against the surface of the hoop bracket 12, the screw 15 is stably restricted, that is, the hoop bracket 12 firmly clamps the plug rod 7, and the sealing cover 6 is stably installed. When the sealing cover 6 needs to be removed, the butterfly nut 16 can be rotated to release its restriction on the screw 15, so that the plug rod 7 can be easily drawn out from the limiting tube 9, thereby quickly removing the sealing cover 6, and there is no need to touch tools such as screwdrivers during this process.

[0032] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A liquid level sensor device, comprising a sensor base (1), characterized in that: The sensor base (1) is provided with an electronic component (2); the bottom of the sensor base (1) is fixedly connected to a retaining cylinder (3); the inner surface of the retaining cylinder (3) is rotatably connected to a rotating rod (4); the bottom of the rotating rod (4) is provided with a rotating plate (5); the top of the sensor base (1) is detachably provided with a sealing cover (6) via a quick retaining mechanism, and the top of the sensor base (1) and the bottom of the sealing cover (6) are both provided with a sealing layer; The quick retaining mechanism comprises an insertion rod (7) fixedly connected to the bottom of the sealing cover (6), and a rubber pad (8) is provided on the outer surface of the insertion rod (7); The outer surface of the sensor base (1) is fixedly connected to a limiting cylinder (9), the top of the limiting cylinder (9) is fixedly connected to a bracket (10), and the inner surface of the limiting cylinder (9) is movably plugged into the outer surface of the insertion rod (7); A frame shaft (11) is fixedly provided on the inner side of the clamp frame (10), and a hoop frame (12) is rotatably connected to the outer surface of the frame shaft (11); The outer surface of the hoop frame (12) is provided with a groove (13), and the inner surface of the clamp frame (10) is rotatably connected with a rotating shaft (14); A screw rod (15) is fixedly connected to the outer surface of the rotating shaft (14), and a butterfly nut (16) is threadedly sleeved on the outer surface of the screw rod (15).

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