Adjustable liquid level sensing device

Abstract

The utility model discloses an adjustable liquid level sensing device belongs to liquid level sensing and control technical field. The device includes jar body, jar cover, structure pipe, vertical rod, suspension ball, top plate, scale groove, backplate, display and infrared sensor. Structure pipe fixed connection is in jar cover top, and vertical rod sliding is arranged in structure pipe inside, and suspension ball fixed connection is in vertical rod bottom, and top plate fixed connection is in vertical rod top, and vertical rod surface is equipped with scale groove. The utility model still is equipped with radiator and rubber pad. The utility model highly integrates buoyancy response, infrared sensing, data display and regulation control function, has solved the single function of prior art, and the lack of high precision real -time display and high integration degree regulation control's insufficient, has compact structure, monitoring accurate, adjustable controllable advantage.

Description

Technical Field

[0001] This utility model relates to the field of liquid level sensing and control technology, and in particular to an adjustable liquid level sensing device. Background Technology

[0002] In industrial production and storage fields, such as chemical processing, food processing, and vacuum impregnation, accurate, real-time, and continuous monitoring of the liquid level in liquid storage tanks is a key link in ensuring process quality and production safety. In existing technologies, liquid level monitoring devices mainly use float-type mechanical structures and simple electronic sensors for measurement.

[0003] However, while traditional float-type mechanical structures are simple in principle, their data reading relies on manual observation, resulting in low accuracy. Furthermore, they cannot achieve remote data transmission or real-time display. Single electronic sensors, such as ultrasonic and capacitive sensors, can provide electrical signal output, but their measurement accuracy is affected by liquid medium characteristics, temperature changes, and foaming factors. They also struggle to provide a direct and stable correlation with the float's mechanical displacement. More importantly, existing liquid level monitoring devices primarily focus on unidirectional monitoring, only reading the current liquid level. When it's necessary to actively adjust the liquid level in the tank or set a maximum liquid level threshold based on process requirements and human instructions, existing devices cannot provide structural linkage support. This necessitates complex external pump and valve systems and additional independent mechanical limiting mechanisms, leading to low system integration, complex structure, cumbersome operation, and high cost.

[0004] Therefore, this utility model proposes an adjustable liquid level sensing device to address the shortcomings of existing liquid level monitoring devices, such as limited functionality, lack of high-precision real-time display, high-integration adjustment and control, and mechanical protection. Utility Model Content

[0005] In view of the problems of existing liquid level sensing devices, such as limited functionality, lack of high-precision real-time data display, and lack of highly integrated adjustment and control, this utility model aims to provide an adjustable liquid level sensing device with an improved structure that can effectively solve the above problems.

[0006] This utility model provides an adjustable liquid level sensing device, including: a tank body, a tank cover, a structural tube, a vertical rod, a suspended ball, a top plate, a scale groove, a back plate, a second support tube, a display, an infrared sensor, a first support tube, and a telescopic tube.

[0007] The tank is used for liquid storage. The tank cover is fixed to the top of the tank. The structural tube is fixedly connected to the center of the top of the tank cover. The upright is slidably inserted inside the structural tube. The bottom end of the upright extends into the tank and is fixedly connected to a suspended ball. The top end of the upright is fixedly connected to a top plate. The outer surface of the upright has a graduated groove along its length.

[0008] The back plate and the second support tube are fixedly connected to the top of the tank lid. The display is fixedly installed on the front side of the back plate. The infrared sensor is fixedly installed on the second support tube. The sensing end of the infrared sensor is set facing the scale groove on the upright. The infrared sensor is electrically connected to the display for real-time acquisition of liquid level data.

[0009] Furthermore, a support tube is fixedly connected to the top of the tank lid, and the telescopic tube is slidably fitted inside the support tube. The telescopic tube is vertically arranged and its top end extends to the bottom of the top plate. The top end of the telescopic tube abuts against the bottom surface of the top plate. The telescopic tube is configured to extend and retract in the vertical direction to push the top plate, thereby realizing adjustable control of the liquid level.

[0010] Preferably, a rubber pad is fixedly connected to the top end of the telescopic tube. The rubber pad is located between the telescopic tube and the top plate. The telescopic tube makes elastic contact with the bottom surface of the top plate through the rubber pad. The rubber pad can effectively absorb mechanical impact and prevent wear between components due to collision.

[0011] Preferably, a heat sink is also fixedly installed on the front side of the back panel and on one side of the display. The heat sink is attached to the back or side of the display and can continuously provide heat dissipation for the display, ensuring the stable operation of electronic components.

[0012] Preferably, the support tube pair serves to limit the telescopic tube, and the number of both the support tube pair and the telescopic tube is even. The telescopic tubes are symmetrically distributed around the central axis of the upright, which effectively enhances the stability and balance of the telescopic adjustment mechanism.

[0013] Preferably, the second support tube is used to fix the infrared sensor. The second support tube is preferably a bracket-type structure, which can ensure the installation accuracy of the infrared sensor and ensure that its sensing end is always aligned with the scale groove.

[0014] Preferably, the display is provided with a data input panel, and the display is electrically connected to the driving component of the telescopic tube. The display can accurately control the extension height of the telescopic tube according to the data input by the user or the preset value, so as to realize the remote or automatic adjustment of the liquid level.

[0015] Preferably, the telescopic tube is an electric telescopic rod, which is configured to extend and retract automatically without manual operation, thereby improving the automation level and ease of operation of the device.

[0016] Preferably, when the upright is raised under the drive of liquid buoyancy, the suspended ball drives the upright to rise, so that the scale on the scale groove can be displayed for the infrared sensor to read in real time.

[0017] Preferably, the inner wall of the structural tube and the outer wall of the upright are fitted with a clearance. This fit can minimize frictional resistance and ensure that the upright can rise and fall smoothly and freely in the vertical direction under the action of buoyancy.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model solves the problem of existing liquid level monitoring devices lacking real-time, accurate, and non-contact data acquisition by combining the buoyancy displacement structure of the suspended ball, upright rod, and graduated groove with an infrared sensor and display, thus achieving the effect of real-time and accurate presentation of liquid level data in the tank.

[0020] 2. This utility model solves the problem of data distortion or unstable operation caused by heat accumulation in electronic components during long-term operation by equipping the display with a heat sink on the back panel, thereby ensuring the long-term stable operation of electronic components such as the display and improving the reliability of the system.

[0021] 3. This utility model, by setting a structure in which a retractable telescopic tube abuts against the top plate, and in conjunction with the input control of the display, solves the problem that traditional monitoring devices can only passively monitor and cannot be manually operated or have upper limits set, thus achieving adjustable control and mechanical limit of liquid level and improving the degree of automation. Attached Figure Description

[0022] Figure 1 This is a perspective view of an adjustable liquid level sensing device proposed in this utility model;

[0023] Figure 2 This is a split view of the top plate in an adjustable liquid level sensing device proposed in this utility model;

[0024] Figure 3 This is an exploded view of the tank cover in an adjustable liquid level sensing device proposed in this utility model;

[0025] Figure 4 This is an exploded view of the display in an adjustable liquid level sensing device proposed in this utility model.

[0026] Legend:

[0027] 1. Tank body; 2. Tank lid; 3. Suspended ball; 4. Upright pole; 5. Structural tube; 6. Support tube one; 7. Infrared sensor; 8. Telescopic tube; 9. Rubber pad; 10. Scale groove; 11. Display; 12. Radiator; 13. Top plate; 14. Back plate; 15. Support tube two. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Example:

[0030] Please refer to Figures 1 to 4 This utility model provides an adjustable liquid level sensing device, which aims to solve the problems of existing liquid level monitoring devices lacking real-time data display, heat dissipation protection, and manual control and adjustment functions for liquid level.

[0031] like Figure 1 As shown, an adjustable liquid level sensing device includes a tank body 1 and a tank cover 2. The tank body 1 is a place for liquid storage and sensing operations, and the tank cover 2 is closed on the top of the tank body 1.

[0032] A structural tube 5 is fixedly connected to the top center of the can lid 2. The structural tube 5 is vertically arranged, and a vertical rod 4 is slidably inserted inside the structural tube 5. The bottom end of the vertical rod 4 extends into the can body 1 and is fixedly connected to a suspended ball 3. The suspended ball 3 is used to receive the buoyancy of the liquid.

[0033] The top of the upright 4 is fixedly connected to a top plate 13. The outer surface of the upright 4 is provided with a scale groove 10 along the length direction. The upright 4 achieves reciprocating motion in the vertical direction through the structural tube 5.

[0034] The top of the tank cover 2 is also fixedly connected to a back plate 14 and a support tube 2 15. The back plate 14 is vertically fixed above the tank cover 2. A display 11 is fixedly installed on the front side of the back plate 14. The display 11 is used to display liquid level data.

[0035] The second support tube 15 is used to fix the infrared sensor 7. The infrared sensor 7 is fixedly installed on the second support tube 15. The sensing end of the infrared sensor 7 is set towards the scale groove 10 on the upright 4, and the infrared sensor 7 is electrically connected to the display 11.

[0036] The top of the can lid 2 is also fixedly connected to a support tube 6, and a telescopic tube 8 is slidably fitted inside the support tube 6. The telescopic tube 8 is vertically arranged and its top extends to the bottom of the top plate 13.

[0037] The top end of the telescopic tube 8 abuts against the bottom surface of the top plate 13. The telescopic tube 8 is configured to extend and retract in the vertical direction to push the top plate 13, thereby realizing the function of adjusting the liquid level.

[0038] The support tube 6 serves to limit the position of the telescopic tube 8.

[0039] Please refer to Figure 3 and Figure 4 The back plate 14 is vertically fixedly installed on the upper surface of the tank cover 2. The display 11 is fixedly installed on the front surface of the back plate 14. The display 11 is used to receive electrical signals and accurately display the liquid level data in the tank 1. A heat sink 12 is also fixedly installed on the front surface of the back plate 14 and on one side of the display 11. The heat sink 12 is in close contact with the back or side components of the display 11. The heat sink 12 is used to continuously provide heat dissipation for the display 11, ensuring the thermal stability of the display 11 during long-term operation and preventing equipment failure due to overheating.

[0040] To achieve precise liquid level sensing, support tube 2 15 is fixedly installed on the upper surface of tank cover 2. Support tube 2 15 is used to stably support infrared sensor 7. Infrared sensor 7 is fixedly installed on support tube 2 15, and the sensing end of infrared sensor 7 is directly facing the front surface of upright rod 4. The surface of upright rod 4 has a scale groove 10 in the vertical direction. When upright rod 4 rises and falls with floating ball 3, infrared sensor 7 can sense the position change of scale groove 10 in real time and convert the sensed light signal into an electrical signal. Infrared sensor 7 is electrically connected to display 11 and transmits the converted electrical signal to display 11 in real time.

[0041] To prevent hard impact wear during mechanical adjustment, a rubber pad 9 is fixedly connected to the top of the telescopic tube 8. The rubber pad 9 is located between the telescopic tube 8 and the top plate 13. When the telescopic tube 8 performs telescopic action and cooperates with the top plate 13, the rubber pad 9 makes elastic contact with the bottom surface of the top plate 13. The rubber pad 9 uses its own material elasticity to buffer the rigid collision between the telescopic tube 8 and the top plate 13, avoiding wear on the surface of the parts due to huge impact and extending the overall service life of the device.

[0042] To increase the overall stability and structural balance of the device, especially for guiding and limiting the telescopic tube 8, the number of both the support tube 6 and the telescopic tube 8 is even. The telescopic tube 8 is symmetrically distributed around the central axis of the upright 4, and the support tube 6 plays a limiting role for the telescopic tube 8.

[0043] To enable manual control and precise adjustment of the liquid level, the display 11 is equipped with a data input panel. The data output terminal of the display 11 is electrically connected to the drive component of the telescopic tube 8. The display 11 is used to receive input data and control the extension height and stroke of the telescopic tube 8, thereby realizing the up and down adjustment of the top plate 13.

[0044] To ensure the installation accuracy of the infrared sensor 7, the second support tube 15 is preferably a bracket-type structure. One end of the second support tube 15 is fixedly connected to the can lid 2, and the other end is used to precisely support the infrared sensor 7, ensuring that the sensing end of the infrared sensor 7 can always be aligned with the scale groove 10.

[0045] To achieve a high degree of integration of liquid level monitoring and automatic adjustment, the telescopic tube 8 is preferably an electric telescopic rod, which is configured to extend and retract automatically. When the upright 4 rises with the suspended ball 3, the suspended ball 3 drives the upright 4 to rise, and the scale on the scale groove 10 is displayed. The infrared sensor 7 senses the scale position of the scale groove 10 in real time and converts the sensing signal into an electrical signal and transmits it to the display 11 for display. The display 11 then sends a command to the telescopic tube 8 according to the preset value or the input value.

[0046] To ensure that the upright 4 can rise and fall smoothly under the action of buoyancy, the structural tube 5 preferably penetrates the can cover 2 vertically, and the inner wall of the structural tube 5 and the outer wall of the upright 4 are in a clearance fit to minimize frictional resistance and ensure that the upright 4 can rise and fall freely in the vertical direction under the action of buoyancy.

[0047] Working principle: First, the liquid to be tested is injected into the tank 1. The buoyancy of the liquid drives the suspended ball 3 to move upward. The suspended ball 3 simultaneously drives the upright rod 4 to slide through the inside of the structural tube 5 and rise. When the liquid level drops, the suspended ball 3 drops synchronously with the liquid level, and the upright rod 4 also falls back down.

[0048] During the lifting and lowering of the pole 4, the scale groove 10 on the outer surface moves synchronously. The infrared sensor 7 continuously senses the real-time scale position of the scale groove 10. The infrared sensor 7 converts the sensed scale signal into an electrical signal and transmits it to the display 11 through an electrical connection.

[0049] The radiator 12 continuously dissipates heat for the display 11, ensuring the stable operation of the display 11 and the entire electronic system. The display 11 accurately displays the liquid level data in the tank 1, realizing real-time monitoring of the liquid level.

[0050] If manual operation or adjustment of the liquid level is required according to process needs, the user can input the target liquid level data on the data input panel of the display 11. The display 11 then sends a control signal to the drive component of the telescopic tube 8 to drive the telescopic tube 8 to extend and retract automatically.

[0051] The telescopic tube 8 extends and retracts by sliding along the inner side of the support tube 6. The top end of the telescopic tube 8 abuts against the bottom surface of the top plate 13 through the rubber pad 9. The telescopic movement of the telescopic tube 8 then pushes the top plate 13.

[0052] When the telescopic tube 8 moves upward and pushes the top plate 13 to rise above the preset height of the telescopic tube 8, it can be considered that the liquid level has reached the height of the input data. The support tube 6 plays a limiting role in the extension and retraction of the telescopic tube 8, and the rubber pad 9 avoids rigid wear between the telescopic tube 8 and the top plate 13 during impact.

[0053] The device achieves precise monitoring through the combination of the suspended ball 3, the upright pole 4 and the infrared sensor 7, and achieves adjustable control through the linkage of the display 11, the telescopic tube 8 and the top plate 13, thus solving the problem of single function in the existing technology.

Claims

1. An adjustable liquid level sensing device, comprising a tank (1) and a tank cover (2) fixed to the top of the tank (1). A structural tube (5) is fixedly connected to the top center of the can lid (2). A vertical rod (4) is slidably inserted inside the structural tube (5). The bottom end of the vertical rod (4) extends into the can body (1) and is fixedly connected to a suspended ball (3). A top plate (13) is fixedly connected to the top of the vertical rod (4). A scale groove (10) is opened on the outer surface of the vertical rod (4) along its length. Its features are, The top of the can lid (2) is also fixedly connected to a back plate (14) and a support tube (15), and a display (11) is fixedly installed on the front side of the back plate (14). An infrared sensor (7) is fixedly installed on the second support tube (15). The sensing end of the infrared sensor (7) is set towards the scale groove (10) on the upright (4), and the infrared sensor (7) is electrically connected to the display (11). The top of the can lid (2) is also fixedly connected to a support tube (6), and a telescopic tube (8) is slidably fitted inside the support tube (6). The telescopic tube (8) is vertically arranged and its top end extends to the bottom of the top plate (13). The top end of the telescopic tube (8) abuts against the bottom surface of the top plate (13). The telescopic tube (8) is configured to extend and retract in the vertical direction to push the top plate (13).

2. An adjustable level sensing device according to claim 1, wherein, A rubber pad (9) is fixedly connected to the top end of the telescopic tube (8). The rubber pad (9) is located between the telescopic tube (8) and the top plate (13). The telescopic tube (8) is in elastic contact with the bottom surface of the top plate (13) through the rubber pad (9). The rubber pad (9) is used to avoid impact wear between components.

3. The adjustable liquid level sensing device according to claim 1, characterized in that, A heat sink (12) is also fixedly installed on the front side of the back plate (14) and on one side of the display (11). The heat sink (12) is attached to the back or side of the display (11) and provides heat dissipation for the display (11).

4. The adjustable level sensing device of claim 1, wherein, The first support tube (6) serves to limit the telescopic tube (8). The number of the first support tube (6) and the telescopic tube (8) are both even. The telescopic tubes (8) are symmetrically distributed around the central axis of the upright (4).

5. The adjustable level sensing device of claim 1, wherein, The infrared sensor (7) is located on the front side of the upright (4), and the second support tube (15) is used to fix the infrared sensor (7). The second support tube (15) is fixed above the can lid (2).

6. An adjustable level sensing device according to claim 1, wherein, The display (11) is provided with a data input panel. The display (11) is electrically connected to the drive component of the telescopic tube (8) and is used to control the telescopic height of the telescopic tube (8) according to the input data so as to realize human operation.

7. An adjustable level sensing device according to claim 1, wherein, During the lifting and lowering process of the pole (4), the infrared sensor (7) senses the scale position of the scale groove (10) in real time and converts the sensing signal into an electrical signal and transmits it to the display (11).

8. The adjustable level sensing device of claim 1, wherein, The telescopic tube (8) is an electric telescopic rod that is configured to extend and retract automatically.

9. The adjustable level sensing device of claim 1, wherein, When the vertical rod (4) rises, the floating ball (3) drives the vertical rod (4) to rise, and the scale on the scale groove (10) appears.

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