An ultrasonic liquid level sensor convenient to install and debug

Abstract

This utility model provides an easy-to-install and debug ultrasonic liquid level sensor, relating to the field of ultrasonic liquid level sensor technology. It includes: a main unit and a probe; and a connecting structure fixed to the side of the soil, suspending the probe above the liquid surface. The connecting structure includes a probe bracket, a mounting block, and a gear structure. The probe is connected to the end of the probe bracket, and the probe bracket is vertically slidably connected to the mounting block. The gear structure restricts the sliding of the probe bracket in one direction. The advantages of this utility model are: through the gear structure design, convenient adjustment and stable fixing of the probe height are achieved. The operator only needs to press to adjust the probe height, and the probe is restricted in the opposite direction, maintaining stability after adjustment. When reverse adjustment is needed, simply moving a lever can release or restore the unidirectional restriction, easily completing precise adjustment of the probe position, greatly improving the efficiency and convenience of installation and debugging.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic liquid level sensor technology, and in particular to an ultrasonic liquid level sensor that is easy to install and debug. Background Technology

[0002] In the current field of liquid level measurement, liquid level sensors are widely used in various liquid storage and monitoring scenarios. They mainly consist of two parts: a main unit and a probe. The main unit is usually installed on the ground for easy operation, parameter setting, and data reading by technicians. The probe is fixed above the liquid surface by a bracket, facing the liquid surface, to sense changes in the liquid level in real time, enabling timely and effective acquisition and feedback of liquid level information.

[0003] However, this current installation method also has significant drawbacks. Once the probe is fixed to the bracket, adjusting its height becomes extremely inconvenient if the liquid level fluctuates significantly due to environmental factors. This makes it difficult to consistently maintain the probe in the optimal measurement position, reducing the accuracy and reliability of liquid level measurement and failing to meet the needs of some special applications requiring extremely high liquid level precision. Utility Model Content

[0004] In view of this, the present invention provides an ultrasonic level sensor that is easy to install and debug, in order to solve the technical problem that existing ultrasonic level sensors rely on brackets for fixation and cannot be adjusted in height after installation.

[0005] An embodiment of this utility model provides an ultrasonic liquid level sensor that is easy to install and debug, comprising:

[0006] The main unit and the probe; and

[0007] A connecting structure for fixing to the side of the soil so that the probe is suspended above the liquid surface. The connecting structure includes a probe bracket, a mounting block and a gear structure. The probe is connected to the end of the probe bracket. The probe bracket is slidably connected to the mounting block. The gear structure restricts the sliding of the probe bracket in one direction.

[0008] The gear structure includes a rack, a gear component, a limiting wheel, an elastic element, multiple first limiting teeth, and multiple second limiting teeth. The rack is connected to the probe bracket. The gear component is rotatably mounted in the mounting block and meshes with the rack. The gear component and the limiting wheel are coaxial, and multiple first limiting teeth and multiple second limiting teeth are respectively connected to opposite sides. Each first limiting tooth and its corresponding second limiting tooth abut against each other in a spiral direction, preventing the gear component and the limiting wheel from rotating relative to each other. The elastic element is used to push the limiting wheel to fit against the gear component.

[0009] Furthermore, the lower end of the probe bracket is connected to a sliding plate, and the upper surface of the mounting block is provided with a sliding groove and a mounting groove. The mounting groove and the sliding groove are connected to form a cavity, and the gear structure is disposed in the mounting groove.

[0010] Furthermore, a rotating shaft is rotatably installed between the inner walls of both sides of the mounting groove, the gear component is connected to the rotating shaft, and the limiting wheel is simultaneously rotatably and slidably connected to the rotating shaft.

[0011] Furthermore, the limiting wheel has multiple guide holes on the end away from the gear component, and the inner wall of the mounting groove is provided with a guide rod that is slidably connected to each of the guide holes, so as to restrict the rotation of the limiting wheel.

[0012] Furthermore, the elastic element is a spring, the limiting wheel is recessed on one side away from the gear, one end of the spring is connected to the recess, and the other end is connected to the inner wall of the mounting groove.

[0013] Furthermore, a connecting rod is provided on the side of the mounting block for pulling the limiting wheel. A movable hole is provided on the side of the mounting block, and the connecting rod is slidably connected to the movable hole. One end of the connecting rod is connected to the limiting wheel, and the other end extends to the outside of the side of the mounting block.

[0014] Furthermore, one end of the connecting rod is provided with an L-shaped hook, and an extension block is provided on the outer wall of the limiting wheel, with the vertical surface of the hook abutting against the extension block.

[0015] Furthermore, an elastic ball is connected to the end of the connecting rod away from the hook-shaped part. The diameter of the elastic ball is larger than the diameter of the movable hole, and the connecting rod is limited by the elastic ball abutting against the movable hole.

[0016] Furthermore, the elastic ball is provided with a lever, which is located on the side of the mounting block.

[0017] Furthermore, both the slide plate and the slide groove are T-shaped.

[0018] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows: The ultrasonic liquid level sensor of this utility model, which is easy to install and debug, realizes convenient adjustment and stable fixation of the probe height through the gear structure design. The operator only needs to press to adjust the probe height, and the probe is restricted in the opposite direction, which can maintain stability after adjustment. When reverse adjustment is required, the one-way restriction can be released or restored by simply moving the lever, which can easily complete the precise adjustment of the probe position, greatly improving the efficiency and convenience of installation and debugging, and effectively solving the problem of difficult adjustment of the probe height of existing sensors. The cooperation between the probe bracket and the slide plate and slide groove, as well as the ingenious setting of the elastic ball and connecting rod, ensure the compactness and stability of the structure, prevent the components from loosening or falling off during use, and ensure the accuracy and reliability of liquid level measurement. This sensor has strong adaptability to the installation environment and is suitable for liquid level measurement of different liquid levels and various liquid environments, and has broad market application prospects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an ultrasonic liquid level sensor that is easy to install and debug according to this utility model;

[0020] Figure 2 This is a three-dimensional view of the connection structure of the ultrasonic liquid level sensor of this utility model, which is easy to install and debug;

[0021] Figure 3 This is a three-dimensional view of the disconnected state of the ultrasonic liquid level sensor connection structure, which is easy to install and debug according to this utility model.

[0022] Figure 4 This utility model is an ultrasonic liquid level sensor that is easy to install and debug. Figure 3 Enlarged view of the structure at point A in the middle;

[0023] Figure 5 This is an exploded view of the gear structure of the ultrasonic liquid level sensor of this utility model, which is easy to install and debug.

[0024] In the diagram: 1. Mounting block; 2. Probe bracket; 3. Probe; 4. Main unit; 5. Slide groove; 6. Mounting groove; 7. Slide plate; 8. Rack; 9. Rotating shaft; 10. Gear component; 11. First limiting tooth; 12. Limiting wheel; 13. Second limiting tooth; 14. Guide hole; 15. Elastic component; 16. Extension block; 17. Connecting rod component; 171. Hook-shaped part; 172. Elastic ball; 173. Pulley; 18. Movable hole; 19. Mounting groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0026] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0027] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0029] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0030] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Please refer to Figure 1 and Figure 2 The present invention provides an ultrasonic liquid level sensor that is easy to install and debug, including a host 4, a probe 3 and a connection structure.

[0032] The connecting structure is used to fix the probe 3 above the liquid surface, specifically to the side of the soil, so that the probe 3 is suspended above the liquid surface and can accurately measure the liquid level.

[0033] Specifically, the connection structure consists of a probe bracket 2, a mounting block 1, and a gear structure. The probe 3 is connected to the end of the probe bracket 2, and the probe bracket 2 and the mounting block 1 are vertically slidably connected. This design provides the basis for adjusting the height of the probe 3.

[0034] Specifically, the probe bracket 2 has a mounting groove 19 at its end, and the probe 3 is connected to the probe bracket 2 by bolts passing through the mounting groove 19.

[0035] The gear structure restricts the sliding of the probe bracket 2 in one direction. That is, during the vertical sliding process between the probe bracket 2 and the mounting block 1, the probe bracket 2 can slide downward, but is blocked from sliding upward.

[0036] To further optimize the structure and function, a sliding plate 7 is connected to the lower end of the probe bracket 2. A sliding groove 5 and a mounting groove 6 are provided on the upper surface of the mounting block 1, and the mounting groove 6 and the sliding groove 5 are connected to form a cavity, in which the gear structure is set.

[0037] This layout makes the entire connection structure more compact and reasonable, while providing suitable space for the installation and movement of components.

[0038] Specifically, the gear structure includes a rack 8, a gear component 10, a limiting wheel 12, an elastic element 15, multiple first limiting teeth 11 and multiple second limiting teeth 13. The rack 8 is connected to one side of the slide plate 7 facing the mounting groove 6. The gear component 10 is rotatably mounted in the mounting block 1 and meshes with the rack 8. Thus, the sliding of the probe bracket 2 will drive the rack 8 to move, thereby causing the gear component 10 to rotate.

[0039] Please refer to Figures 2 to 3 Furthermore, in this embodiment, the gear component 10 and the limiting wheel 12 are coaxially arranged, and multiple first limiting teeth 11 and multiple second limiting teeth 13 are respectively connected to their opposite side surfaces.

[0040] Each first limiting tooth 11 and its corresponding second limiting tooth 13 abut against each other in a certain rotation direction. The multiple first limiting teeth 11 and multiple second limiting teeth 13 are arranged in a circular trajectory, and the longitudinal cross-section of the first limiting tooth 11 and the second limiting tooth 13 is a right triangle. The right-angled sides of the first limiting tooth 11 and the second limiting tooth 13 face opposite directions.

[0041] A rotating shaft 9 is rotatably mounted between the inner walls of both sides of the mounting groove 6. The gear component 10 is connected to the rotating shaft 9, and the limiting wheel 12 is simultaneously rotatably and slidably connected to the rotating shaft 9. This design allows the gear component 10 and the limiting wheel 12 to rotate stably around the rotating shaft 9, while the limiting wheel 12 can also slide within a certain range to adapt to the working requirements of the gear structure.

[0042] Thus, the inclined surface of the first limiting tooth 11 contacts the second limiting tooth 13 through the inclined surface. During forward rotation, the gear component 10 is restricted on the rotating shaft 9. The first limiting tooth 11 on the gear component 10 applies an axial upward force to the second limiting tooth 13, causing the first limiting tooth 11 to pass over the inclined surface of the second limiting tooth 13 during rotation, and making a clicking sound. When the first limiting tooth 11 and the second limiting tooth 13 rotate in opposite directions, the right-angled surfaces of the first limiting tooth 11 and the second limiting tooth 13 abut against each other, thereby restricting the relative rotation of the gear component 10 and the limiting wheel 12.

[0043] In an optional embodiment, the elastic element 15 is selected as a spring, and the side of the limiting wheel 12 away from the gear element 10 is designed as a recessed structure. One end of the spring is connected to the recess, and the other end is connected to the inner wall of the mounting groove 6.

[0044] Through the elastic force of the spring, the limiting wheel 12 can be continuously pushed towards the gear component 10, ensuring tight engagement between the limiting teeth and achieving stable unidirectional restriction. This allows the second limiting tooth 13 and the first limiting tooth 11 to quickly re-engage after axial relative movement.

[0045] In another embodiment, the end of the limiting wheel 12 away from the gear component 10 is provided with a plurality of guide holes 14, and the inner wall of the mounting groove 6 is provided with a guide rod that is slidably connected to each guide hole 14.

[0046] In this way, the limiting wheel 12 is restricted by the guide rod and can only move along the axial direction of the guide rod, thereby restricting the relative rotation of the limiting wheel 12 and the rotating shaft 9.

[0047] In another alternative embodiment, please refer to Figure 5 In order to facilitate the operator to control the position of the limit wheel 12, a connecting rod 17 is provided on the side of the mounting block 1 to pull the limit wheel 12. When the connecting rod 17 pulls the limit wheel 12 away from the gear 10, the gear 10 will not be restricted in one direction, so that the slide plate 7 can be freely slid and adjusted.

[0048] Furthermore, a movable hole 18 is correspondingly provided on the side of the mounting block 1, and the connecting rod 17 is slidably connected to the movable hole 18. One end of the connecting rod 17 is connected to the limiting wheel 12, and the other end extends to the outside of the side of the mounting block 1, which facilitates the operation of the operator.

[0049] In an optional embodiment, one end of the connecting rod 17 is provided with an L-shaped hook portion 171, and the outer wall of the limiting wheel 12 is provided with an extension block 16, the vertical surface of the hook portion 171 abutting against the extension block 16.

[0050] This connection method is simple and effective, ensuring that the pulling action of the connecting rod 17 on the limit wheel 12 is transmitted accurately and stably.

[0051] In addition, an elastic ball 172 is connected to the end of the connecting rod 17 away from the hook-shaped part 171. The diameter of the elastic ball 172 is larger than the diameter of the movable hole 18. The elastic ball 172 has a certain elasticity, thereby realizing the connection of the connecting rod 17 to the movable hole 18 through the abutment of the elastic ball 172. Under normal conditions, the elastic element 15 applies elastic force to the limiting wheel 12, so that the connecting rod 17 is simultaneously subjected to force towards the mounting block 1 along with the limiting wheel 12. At this time, the elastic ball 172 can abut against the opening of the movable hole 18.

[0052] To facilitate the use of personnel to pull the connecting rod 17, the elastic ball 172 is also provided with a lever 173, which is located on the side of the mounting block 1.

[0053] Operators can easily operate the connecting rod 17 by moving the lever 173, thereby controlling the limit wheel 12 and facilitating the adjustment of the probe 3 height.

[0054] Finally, both the slide plate 7 and the slide groove 5 are T-shaped. This shape design allows the slide plate 7 to slide stably within the slide groove 5, while preventing the slide plate 7 from sliding off relative to the slide groove 5, thus ensuring the stability and reliability of the probe bracket 2 during the adjustment process.

[0055] During actual installation and debugging, the mounting block 1 is first fixed to a suitable position on the side of the soil. When the height of the probe 3 needs to be adjusted, if it is only necessary to move the probe 3 downward, the probe bracket 2 can be pressed downward directly. The probe bracket 2 drives the gear component 10 to rotate through the lower rack 8. The first limiting tooth 11 and the second limiting tooth 13 between the gear component 10 and the limiting wheel 12 are misaligned and make a clicking sound, which can be quickly adjusted. If the reverse adjustment is required, the operator can move the lever 173 to move the connecting rod 17, thereby pulling the limiting wheel 12 to overcome the elastic force of the elastic component 15 and separating the limiting wheel 12 from the gear component 10. At this time, the one-way restriction of the gear structure is released, and the probe bracket 2 can slide along the slide groove 5 on the mounting block 1, thereby driving the probe 3 to move up and down to adjust to a suitable height position. After adjustment, the lever 173 is released, and under the action of the elastic component 15, the limiting wheel 12... The gear component 10 is reattached, restoring the unidirectional limiting function of the gear structure. The probe bracket 2 is then fixed in a new position, and the height of the probe 3 is adjusted. The entire process is simple and quick, greatly improving the installation and debugging efficiency of the ultrasonic liquid level sensor, while also ensuring the accuracy and reliability of the liquid level measurement.

[0056] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0057] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An ultrasonic liquid level sensor that is easy to install and debug, characterized in that, include: The host (4) and the probe (3); and A connecting structure is used to fix the probe (3) to the side of the soil so that the probe (3) is suspended above the liquid surface. The connecting structure includes a probe bracket (2), a mounting block (1) and a gear structure. The probe (3) is connected to the end of the probe bracket (2). The probe bracket (2) is vertically slidably connected to the mounting block (1). The gear structure restricts the sliding of the probe bracket (2) in one direction. The gear structure includes a rack (8), a gear component (10), a limiting wheel (12), an elastic element (15), multiple first limiting teeth (11) and multiple second limiting teeth (13). The rack (8) is connected to the probe bracket (2). The gear component (10) is rotatably mounted in the mounting block (1) and meshes with the rack (8). The gear component (10) and the limiting wheel (12) are coaxial, and multiple first limiting teeth (11) and multiple second limiting teeth (13) are respectively connected to opposite sides. Each first limiting tooth (11) and its corresponding second limiting tooth (13) abut against each other in a spiral direction, so that the gear component (10) and the limiting wheel (12) cannot rotate relative to each other. The elastic element (15) is used to push the limiting wheel (12) to fit against the gear component (10).

2. The ultrasonic liquid level sensor as described in claim 1, characterized in that: The lower end of the probe bracket (2) is connected to a sliding plate (7). The upper surface of the mounting block (1) is provided with a sliding groove (5) and a mounting groove (6). The mounting groove (6) and the sliding groove (5) are connected to form a cavity. The gear structure is set in the mounting groove (6).

3. The ultrasonic level sensor as described in claim 2, which is easy to install and debug, is characterized in that: A rotating shaft (9) is rotatably installed between the inner walls of both sides of the mounting groove (6). The gear component (10) is connected to the rotating shaft (9). The limiting wheel (12) is simultaneously rotatably and slidably connected to the rotating shaft (9).

4. The ultrasonic level sensor as described in claim 3, which is easy to install and debug, is characterized in that: The limiting wheel (12) has multiple guide holes (14) on one end away from the gear (10), and the inner wall of the mounting groove (6) is provided with a guide rod that is slidably connected to each of the guide holes (14) so ​​as to restrict the rotation of the limiting wheel (12).

5. The ultrasonic level sensor as described in claim 2, characterized in that: The elastic element (15) is a spring, and the limiting wheel (12) is recessed on one side away from the gear (10). One end of the spring is connected to the recess, and the other end is connected to the inner wall of the mounting groove (6).

6. The ultrasonic level sensor as described in claim 1, characterized in that: The mounting block (1) has a connecting rod (17) on its side for pulling the limiting wheel (12). The mounting block (1) has a movable hole (18) on its side. The connecting rod (17) is slidably connected to the movable hole (18). One end of the connecting rod (17) is connected to the limiting wheel (12), and the other end extends to the outside of the side of the mounting block (1).

7. The ultrasonic level sensor as described in claim 6, which is easy to install and debug, is characterized in that: One end of the connecting rod (17) is provided with an L-shaped hook (171), and the outer wall of the limiting wheel (12) is provided with an extension block (16). The vertical surface of the hook (171) abuts against the extension block (16).

8. The ultrasonic level sensor as described in claim 7, characterized in that: An elastic ball (172) is connected to one end of the connecting rod (17) away from the hook (171). The diameter of the elastic ball (172) is larger than the diameter of the movable hole (18). The connecting rod (17) is limited by abutting against the movable hole (18) through the elastic ball (172).

9. The ultrasonic level sensor as described in claim 8, characterized in that: The elastic ball (172) is provided with a lever (173), which is located on the side of the mounting block (1).

10. The ultrasonic level sensor as described in claim 2, characterized in that: Both the slide plate (7) and the slide groove (5) are T-shaped.

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