Novel float type liquid level meter

Abstract

The utility model discloses a novel float-type liquid level meter, which belongs to the technical field of liquid level meters and is characterized in that a smooth guide rail is mounted on a frame, a ball screw is rotatably mounted on the frame, a moving platform is rotatably lifted on the ball screw, a probe is mounted at the bottom end of the moving platform, and a float is mounted on the probe; the driving control assembly comprises a servo motor, a bevel gear reversing mechanism, a ball nut, a bearing seat and a control system, the servo motor is installed on one side of the driving system, the bevel gear reversing mechanism is installed at the output end of the servo motor, a ball screw is rotationally installed on the bevel gear reversing mechanism, and the ball nut is rotationally lifted on the ball screw; according to the novel float type liquid level meter device, the probe structure adopts a split type design, and a mounting groove is reserved in the lower end of a cantilever, so that the whole probe can be quickly mounted and replaced, and the probe can be conveniently mounted and replaced; and the internal structure can be customized and replaced according to the requirements of the actual working environment.

Description

Technical Field

[0001] This utility model relates to a novel float-type liquid level gauge, belonging to the field of liquid level gauge technology. Background Technology

[0002] Liquid level gauges, as devices used to measure the height of liquid media, have been widely used in industries such as chemical, petroleum, and environmental protection. However, in special scenarios where multiple liquids exist inside a closed container and there are stratifications between the liquids, traditional liquid level gauges often face significant technical challenges in measuring the interface position. For example, in closed storage devices such as the oil-water displacement storage device of the new Spar drilling platform, liquids of different densities often coexist. The accurate measurement of the interface position is of great significance for the efficient operation of the equipment and production safety. However, due to the limitations of the closed space and the complex liquid stratification structure, existing technologies are difficult to meet the requirements of high accuracy and anti-interference ability.

[0003] For example, the level gauge float with density measurement function disclosed in application number 201410217379.1 has a level gauge connected to a float via a flexible line. The float integrates a density meter, which is wired or wirelessly connected to the level gauge. The density meter is also wired or wirelessly connected to a monitoring device or other receiving device. As needed, the float can be lowered to a certain height of the liquid, and the density meter inside the float can measure the density of the liquid at that height, thus realizing multi-point or fixed-point measurement of the density in the liquid.

[0004] Traditional float-type level gauges typically detect liquid levels using a float and a pull wire, but they have weak anti-interference capabilities. Furthermore, traditional level gauges struggle to accurately detect changes in liquid density and cannot precisely detect liquid interfaces. To address these issues, there is an urgent need for a new type of liquid level measurement device. Utility Model Content

[0005] The main purpose of this invention is to provide a new type of float-type liquid level gauge.

[0006] The objective of this utility model can be achieved by adopting the following technical solution:

[0007] A novel float-type level gauge includes a frame for limiting position;

[0008] A top cover is installed on the upper end of the frame, a smooth guide rail is installed on the frame, a ball screw is rotatably installed on the frame, a moving platform is rotatably raised and lowered on the ball screw, a probe is installed at the bottom of the moving platform, and a float is installed on the probe.

[0009] The frame is equipped with drive control components, the drive system and motion platform are equipped with limit components at their outer ends, and the probe is equipped with detection components.

[0010] Preferably, the drive control components include a servo motor, a bevel gear reversing mechanism, a ball nut, a bearing housing, and a control system;

[0011] A servo motor is installed on one side of the drive system. A bevel gear reversing mechanism is installed at the output end of the servo motor. A ball screw is rotatably installed on the bevel gear reversing mechanism. A ball nut is rotated and raised on the ball screw. A bearing seat is installed on the top cover. A control system is installed on the oblique side of the drive system.

[0012] Preferably, the limiting component includes a platform, a boom, a hole, a square hole, and a U-shaped groove;

[0013] A platform is mounted on the ball nut, a boom is mounted on the platform, a square hole is opened on the platform, a hole is installed on one side of the square hole, and a U-shaped groove is installed on the outer end of the boom.

[0014] Preferably, the detection assembly includes an upper housing, a force sensor, a sensor bracket, a lever, a shaft, a key, a sealed bearing, and a lower housing.

[0015] The probe is enclosed by the upper half and lower half of the outer shell on its top and bottom sides;

[0016] Sensor brackets are installed inside the upper and lower halves of the housing. A lever is installed on the sensor bracket. A force sensor is installed on the outside of the lever. A sealed bearing is installed on the sensor bracket. A shaft is installed on the sealed bearing. A key is installed on the shaft.

[0017] Preferably, the upper end of the ball screw is connected to the top cover via a bearing seat.

[0018] Preferably, the shaft transmits torque between the float and the lever via a key, and the upper and lower halves of the housing have pre-reserved portions, with the shaft mounted in the middle via sealed bearings.

[0019] Preferably, a U-shaped groove is machined at the lower end of the upper arm.

[0020] The beneficial technical effects of this utility model are as follows:

[0021] This utility model provides a novel float-type liquid level gauge.

[0022] 1) This novel float-type level gauge uses a 2mm thick square steel tube as the cantilever between the probe and the motion platform, and a smooth guide rail is installed on the motion platform. Compared with the shortcomings of traditional cable-driven level gauges, which are susceptible to hydrodynamic effects, this design, through the synergistic effect of the rigid cantilever and the guide rail, enables it to maintain stable vertical lifting and lowering even in complex fluid environments, such as tank swaying, fluid turbulence, and mechanical vibration, significantly improving its anti-interference capability and measurement stability.

[0023] 2) This novel float-type level gauge device fixes the motion platform onto a ball nut, thereby connecting it to a ball screw. The ball screw is rotated via a servo motor, converting the motor's rotational motion into linear motion of the motion platform. High-precision bevel gears and bearings reduce losses of speed and torque during transmission. This achieves precise displacement control of the float, ensuring measurement accuracy.

[0024] 3) The probe structure of this new type of float level gauge adopts a split design and a pre-reserved installation groove at the lower end of the cantilever. This not only enables the rapid installation and replacement of the probe as a whole, but also allows its internal structure to be customized and replaced according to the needs of the actual working environment. Attached Figure Description

[0025] Figure 1 This is a perspective view of the overall structure of a preferred embodiment of a novel float-type level gauge according to the present invention;

[0026] Figure 2 A triaxial view of the top cover structure of a preferred embodiment of a novel float-type level gauge according to this utility model;

[0027] Figure 3 This is a partial cross-sectional view of the drive system of a preferred embodiment of a novel float-type level gauge according to the present invention;

[0028] Figure 4 A triaxial view of the motion platform according to a preferred embodiment of a novel float-type level gauge of the present invention;

[0029] Figure 5 This is a perspective view of the probe structure of a preferred embodiment of a novel float-type level gauge according to the present invention;

[0030] Figure 6 A bottom view of the probe internal structure according to a preferred embodiment of a novel float-type level gauge of the present invention;

[0031] Figure 7 The left view shows the internal structure of the probe of a preferred embodiment of a novel float-type level gauge according to this utility model.

[0032] In the diagram: 1. Frame; 101. Base plate; 102. Smooth guide rail; 103. Top cover; 2. Drive system; 201. Servo motor; 202. Bevel gear reversing mechanism; 203. Ball screw; 204. Ball nut; 205. Bearing seat; 3. Motion platform; 301. Platform; 302. Arm; 303. Hole; 304. Square hole; 305. U-groove; 4. Probe; 401. Upper half of the outer shell; 402. Force sensor; 403. Sensor bracket; 404. Lever; 405. Shaft; 406. Float; 407. Key; 408. Sealed bearing; 409. Lower half of the outer shell; 5. Control system. Detailed Implementation

[0033] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0034] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0035] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0036] 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 further defined and explained in subsequent figures.

[0037] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] Please see Figure 1-7 As shown, a novel float-type liquid level gauge device of this utility model includes a frame 1, a drive system 2, a motion platform 3, a probe 4, and a control system 5;

[0039] The frame 1 has a base plate 101, a drive device 2 is installed on one side of the base plate 101, a motion platform 3 is installed on the drive device 2, and a probe 4 is installed below the motion platform 3.

[0040] It should be noted that this new type of float-type liquid level gauge measures the buoyancy of liquid at different heights and determines the liquid level based on the change in buoyancy.

[0041] Taking an oil storage device as an example, there is a problem of oil stratification of different densities or oil-water replacement storage. After the liquid stratifies, there are liquid separation surfaces between liquids of different densities. In order to facilitate the detection of these liquid surfaces, this new type of float-type liquid level gauge is designed. Through the cooperation between the drive system 2, the motion platform 3 and the probe 4 set above, the liquid level height can be measured.

[0042] The drive system 2 is equipped with a servo motor 201, which is connected to a ball screw 203 via a bevel gear steering mechanism 202. A ball nut 204 is on the ball screw, and the upper end of the ball screw 203 is connected to the top cover 103 via a bearing seat 205. The motion platform 3 consists of a platform 301 and a cantilever 302. The platform is mounted on the ball nut 204 through a hole 303, and the cantilever 302 is connected through a square hole 304 in the middle of the platform 301. A U-shaped groove 305 is machined at the lower end of the cantilever 302.

[0043] Specifically, the control system 5 drives the servo motor 201 to rotate. The output shaft of the servo motor is connected to the bevel gear reversing mechanism 202. The reversing mechanism converts the rotation in the x-axis direction to the z-axis direction, causing the ball screw 203 to rotate. The ball screw 203 is fixed in position by the bearing seat 205. The ball nut 204 on the ball screw 203 is connected to the motion platform 3. The cantilever 302 is connected and fixed to the platform 301 at the square hole 304. One end of the platform 301 is connected to the ball nut 204, and the other end is connected to the smooth guide rail 102, thereby limiting horizontal displacement and rotation, so that the servo motor 201 drives the cantilever 302 to move in the vertical direction.

[0044] Specifically, the U-shaped groove 305 machined below the cantilever 302 is to facilitate the installation of the probe 4 and to reserve an installation position for the sensor bracket 403;

[0045] The outer shell of probe 4 is divided into two parts: an upper half 401 and a lower half 409. A force sensor 402 is installed on the upper half 401. The force sensor 402 is connected to the upper half 401 via a sensor bracket 403. A lever 404 is installed on the force sensor 402. One end of the lever 404 is connected to the sensor 402, and the other end is connected to both ends of a shaft 405. A float 406 is connected to the middle of the shaft 405. The shaft 405 transmits torque between the float 406 and the lever 404 via a key 407. One end of the upper half 401 and the lower half 409 of the outer shell has a reserved bearing hole 410. The shaft 405 is installed in the bearing hole 410 via a sealed bearing 408.

[0046] Specifically, probe 4 is the main structure for measuring data. According to Archimedes' principle, float 406, F1, F2, and F3 may represent the buoyancy of different objects or the interaction forces between different objects. In the liquid, it obtains an upward buoyancy F1, which generates a downward force F2 below the force sensor 402 through lever 404. Since the upper end of the force sensor 402 is fixed on the sensor bracket 403, it generates a force F3 that is equal in magnitude and opposite in direction to force F2. Therefore, the force sensor 402 can capture the magnitude of this force. When probe 4 moves with cantilever 302, it passes through liquids of different densities, and the buoyancy value transmitted by its float 406 changes. Therefore, the magnitude of the force captured by the force sensor 402 changes abruptly. This position is the interface between liquids of different densities.

[0047] This novel float-type level gauge uses a 2mm thick square steel tube as a cantilever between the probe and the motion platform, and a smooth guide rail is installed on the motion platform. Compared with the shortcomings of traditional cable-driven level gauges that are susceptible to hydrodynamic effects, this design, through the synergistic effect of the rigid cantilever and the guide rail, can maintain stable vertical lifting and lowering even when facing complex fluid environments, such as tank shaking, fluid turbulence and mechanical vibration, which greatly improves the anti-interference ability and measurement stability.

[0048] This novel float-type level gauge device fixes the motion platform on a ball nut, thereby combining it with a ball screw. The rotation of the ball screw is achieved by driving a servo motor, thus converting the motor's rotational motion into the linear motion of the motion platform. High-precision bevel gear sets and bearings are used to reduce the loss of speed and torque during transmission, achieving precise displacement control of the float and ensuring measurement accuracy.

[0049] This new type of float-type level gauge features a split-type probe structure with a pre-reserved mounting slot at the lower end of the cantilever. This design allows for quick installation and replacement of the probe as a whole, and its internal structure can also be customized and replaced according to the needs of the actual working environment.

[0050] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A novel float-type level gauge, comprising a frame (1) for limiting position; characterized in that A top cover (103) is installed on the upper end of the frame (1), a smooth guide rail (102) is installed on the frame (1), a ball screw (203) is rotatably installed on the frame (1), a moving platform (3) is rotatably raised and lowered on the ball screw (203), a probe (4) is installed at the bottom end of the moving platform (3), and a float (406) is installed on the probe (4); A drive control component is installed on the frame (1), a limit component is installed at the outer end of the drive system (2) and the motion platform (3), and a detection component is installed inside the probe (4).

2. A new type of float type liquid level meter according to claim 1, characterized in that: The drive control components include a servo motor (201), a bevel gear reversing mechanism (202), a ball nut (204), a bearing housing (205), and a control system (5); A servo motor (201) is installed on one side of the drive system (2). A bevel gear reversing mechanism (202) is installed at the output end of the servo motor (201). A ball screw (203) is rotatably installed on the bevel gear reversing mechanism (202). A ball nut (204) is rotated and lifted on the ball screw (203). A bearing seat (205) is installed on the top cover (103). A control system (5) is installed on the oblique side of the drive system (2).

3. A new type of float type liquid level meter according to claim 2, characterized in that: The limiting components include a platform (301), a boom (302), a hole (303), a square hole (304), and a U-shaped groove (305); A platform (301) is mounted on the ball nut (204), a boom (302) is mounted on the platform (301), a square hole (304) is opened on the platform (301), a hole (303) is installed on one side of the square hole (304), and a U-shaped groove (305) is installed on the outer end of the boom (302).

4. A new type of float type liquid level meter according to claim 3, characterized in that: The detection assembly includes an upper housing (401), a force sensor (402), a sensor bracket (403), a lever (404), a shaft (405), a key (407), a sealed bearing (408), and a lower housing (409); The probe (4) is covered by the upper half (401) and the lower half (409) of the outer shell on the upper and lower sides; A sensor bracket (403) is installed inside the upper half (401) and lower half (409) of the outer casing. A lever (404) is installed on the sensor bracket (403). A force sensor (402) is installed on the outside of the lever (404). A sealed bearing (408) is installed on the sensor bracket (403). A shaft (405) is installed on the sealed bearing (408). A key (407) is installed on the shaft (405).

5. A new type of float type liquid level meter according to claim 4, characterized in that: The upper end of the ball screw (203) is connected to the top cover (103) via a bearing seat (205).

6. A new type of float type liquid level meter according to claim 5, characterized in that: The shaft (405) transmits torque between the float (406) and the lever (404) via a key (407). The upper half (401) and the lower half (409) of the outer casing have reserved bearing holes (410) at one end, and the shaft (405) is installed in the bearing holes (410) via a sealed bearing (408).

7. A new type of float type liquid level meter according to claim 6, characterized in that: A U-shaped groove (305) is machined at the lower end of the boom (302).

Images