Liquid level measuring device

Abstract

The utility model relates to a liquid level measuring device, and relates to the technical field of liquid level measurement. The liquid level measuring device comprises a fixing plate, a mounting seat, a swing rod, a floating ball and a tilt angle sensor, the fixing plate is arranged on the wall of the container, the mounting seat is arranged on the fixing plate, the swing rod is rotatably arranged on the mounting seat, the floating ball is arranged at the first end of the swing rod and located in the container, and the tilt angle sensor is arranged on the mounting seat. The tilt angle sensor is arranged at the second end of the swing rod and located outside the container. When the liquid level in the container changes, the floating ball can move up and down along with the liquid level, so that the swing rod rotates on the mounting seat, and the tilt angle sensor arranged at the second end of the swing rod can measure the current tilt angle of the swing rod, so that the height of the liquid level in the container can be judged. The liquid level measuring device is very simple in structure, the part, located in the container, of the liquid level measuring device is not prone to being affected by impurities in media, and the liquid level measuring device has the advantage of being high in reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid level measurement technical field, in particular to a liquid level measurement device. BACKGROUND

[0002] In all kinds of factories such as chemical plant, water treatment plant and food and beverage plant, liquid level is the important factor to guarantee the stable operation of factory, so there is higher requirement to the accuracy and stability of liquid level measurement. At present, the float type liquid level meter is usually used to measure liquid level.

[0003] Among them, the more common in the float type liquid level meter is magnetic float liquid level meter, and the working principle of the magnetic float liquid level meter is that the conduit of the liquid level meter is provided with a magnetic float floating with medium, the magnetic float and the magnetic body of the display color bar of the liquid level meter are coupled to make the magnetic body overturn, the magnetic body is white on one side and red on the other side, and the medium liquid level can be accurately displayed. However, the medium in the container may contain solid or magnetic impurities, when the magnetic impurities enter the conduit of the liquid level meter, the magnetic impurities are easily adsorbed on the surface of the magnetic float, which causes the magnetic float to be stuck or the weight to increase and sink to the bottom of the pipe, resulting in the failure of the liquid level meter. If there are too many solid impurities in the liquid, the connecting channel of the container and the liquid level meter will also be blocked. At present, there is no good solution to the problem of the blockage of the magnetic float liquid level meter or the sticking of the magnetic float, and only the liquid level meter can be disassembled on site, the magnetic float can be taken out and cleaned, and then the complicated procedures such as reassembly and pressure test are carried out, which increases the risk of on-site operation and the working intensity of the workers. SUMMARY

[0004] The utility model provides a kind of liquid level measurement device, it is simple in structure, not easy to be influenced by impurity in medium, with high reliability.

[0005] The utility model provides a kind of liquid level measurement device, including fixed plate, mounting seat, swing bar, float ball and inclination sensor, the fixed plate is set to the container wall, the mounting seat is set to the fixed plate, the swing bar is rotatably set to the mounting seat, the float ball is set to the first end of the swing bar and is located in the inside of the container, the inclination sensor is set to the second end of the swing bar and is located in the outside of the container.

[0006] In an embodiment, the swing bar includes a rotating portion, a first rod body, and a second rod body. The first rod body and the second rod body are respectively arranged on both sides of the rotating portion. The rotating portion is in a cylindrical shape and is rotatably arranged inside the mounting seat.

[0007] In an embodiment, the mounting seat includes two oppositely arranged flat plates and two oppositely arranged arc-shaped plates. Both sides of the mounting seat are provided with rectangular openings. The rotating portion is arranged inside the mounting seat.

[0008] In one embodiment, the inner wall of the arc-shaped plate and the inner wall of the flat plate are both attached to the surface of the rotating part.

[0009] In one embodiment, the inner part of the mounting seat is further provided with a sealing gasket, and the surface of the rotating part is attached to the sealing gasket.

[0010] In one embodiment, the first rod is located inside the container, and the length of the first rod is greater than the length of the second rod.

[0011] In one embodiment, the fixing plate is arranged at the middle part of the container, and the distance between the mounting seat and the top of the container is equal to the distance between the mounting seat and the bottom of the container.

[0012] In one embodiment, the contour of the fixing plate is circular, and the container wall is provided with an opening, and the edge of the fixing plate is connected to the hole wall of the opening.

[0013] In one embodiment, the swing rod is made of metal.

[0014] In one embodiment, the floating ball is a hollow metal ball.

[0015] Compared with the prior art, when the liquid level in the container changes, the floating ball moves up and down with the liquid surface, the swing rod rotates on the mounting seat, the inclination sensor arranged at the second end of the swing rod can measure the current inclination angle of the swing rod, and the liquid level height in the container is determined. The liquid level measuring device of the utility model has the advantages of simple structure, high reliability, and the part inside the container is not easily affected by impurities in the medium. BRIEF DESCRIPTION OF DRAWINGS

[0016] In the following, the utility model will be described in more detail based on the embodiments and with reference to the drawings.

[0017] Figure 1 is one of the structure schematic diagrams of the liquid level measuring device in the embodiment of the utility model;

[0018] Figure 2 is the second structure schematic diagram of the liquid level measuring device in the embodiment of the utility model;

[0019] Figure 3 is Figure 1 is the enlarged view of A in figure 1;

[0020] Figure 4 is the perspective view of the mounting seat in the embodiment of the utility model.

[0021] Reference signs:

[0022] 1, fixed plate; 2, mounting seat; 21, flat plate; 22, arc plate; 3, swing rod; 31, rotating part; 32, first rod body; 33, second rod body; 4, floating ball; 5, inclination sensor; 6, container; 7, sealing gasket. DETAILED DESCRIPTION

[0023] The utility model will be described further below with reference to the drawings.

[0024] As Figure 1 and Figure 2 The liquid level measuring device of an embodiment of the utility model includes fixed plate 1, mounting seat 2, swing rod 3, floating ball 4 and inclination sensor 5, fixed plate 1 is arranged on the wall of container 6, mounting seat 2 is arranged on fixed plate 1, swing rod 3 is rotatably arranged on mounting seat 2, floating ball 4 is arranged at the first end of swing rod 3 and is located in the inside of container 6, and inclination sensor 5 is arranged at the second end of swing rod 3 and is located outside container 6.

[0025] Inclination sensor 5 is also called clinometer, inclinometer, level meter, inclinometer, and is often used for the horizontal angle change measurement of system, and the level meter from the simple water bubble level meter to the electronic level meter is the result of the development of automation and electronic measurement technology.As a detection tool, it has become an indispensable important measuring tool in the fields of bridge erection, railway laying, civil engineering, oil drilling, aviation and navigation, industrial automation, intelligent platform, mechanical processing and the like. Electronic level meter is a very precise detection tool for measuring small angle, and it can measure the inclination of the measured plane relative to the horizontal position, the parallelism and perpendicularity of two components.

[0026] The control system matched with inclination sensor 5 is not shown in the figure, and inclination sensor 5 sends the inclination angle of swing rod 3 to the control system, the control system calculates the liquid level value and adjusts the liquid level height in container 6, so that the liquid level is kept at the normal level.

[0027] When the liquid level in container 6 changes, floating ball 4 will move up and down along with the liquid surface, so that swing rod 3 rotates on mounting seat 2, and the inclination sensor 5 arranged at the second end of swing rod 3 can measure the current inclination angle of swing rod 3, so as to judge the liquid level height in container 6. The liquid level measuring device of the utility model has the advantages of simple structure, and the part located in the inside of container 6 is not easy to be affected by impurities in the medium, and has high reliability.

[0028] As Figure 3As shown, the pendulum rod 3 comprises a rotating part 31, a first rod body 32 and a second rod body 33, the first rod body 32 and the second rod body 33 are respectively arranged at two sides of the rotating part 31, the rotating part 31 is in a cylindrical shape and is rotatably arranged in the interior of the mounting seat 2. The surface of the rotating part 31 in a cylindrical shape is smooth, so that the pendulum rod 3 can stably rotate in the mounting seat 2 with the rotating part 31 as the center, and the rotating part 31 plays a role similar to a rotating shaft. In order to reduce the weight of the pendulum rod 3, the shape of the rotating part 31 in the embodiment is a relatively low cylindrical shape.

[0029] As shown, Figure 4 Further, the mounting seat 2 comprises two oppositely arranged flat plates 21 and two oppositely arranged arc-shaped plates 22, both sides of the mounting seat 2 are provided with rectangular openings, and the rotating part 31 is arranged in the interior of the mounting seat 2. The shape of the mounting seat 2 matches the shape of the rotating part 31, and the mounting seat 2 partially wraps the rotating part 31, so that the rotating part 31 can only rotate within a certain range in the mounting seat 2 and cannot translate, thereby ensuring the stability of the pendulum rod 3 during movement.

[0030] Specifically, the inner wall of the arc-shaped plate 22 and the inner wall of the flat plate 21 are in close contact with the surface of the rotating part 31, the arc-shaped plate 22 is partially in close contact with the side surface of the rotating part 31, and the flat plate 21 is partially in close contact with the top surface or the bottom surface of the rotating part 31, so that the mounting seat 2 has a good limiting effect on the rotating part 31.

[0031] As shown, Figure 3 The interior of the mounting seat 2 is also provided with a sealing gasket 7, and the surface of the rotating part 31 is in close contact with the sealing gasket 7. Although the rotating part 31 and the mounting seat 2 can also achieve good sealing through precise machining to avoid leakage of the medium in the container 6, the machining cost is relatively high. By arranging the sealing gasket 7 in the interior of the mounting seat 2, the sealing problem can be well solved, and the machining precision requirement is reduced. In the embodiment, the sealing gasket 7 covers the entire inner wall of the mounting seat 2, so that the sealing gasket 7 has a large contact area with the rotating part 31 to achieve a good sealing effect.

[0032] The sealing gasket 7 is made of a material with a low friction coefficient between the rotating part 31 to reduce the resistance when the pendulum rod 3 rotates.

[0033] In the embodiment, the first rod body 32 is located in the interior of the container 6, and the length of the first rod body 32 is greater than the length of the second rod body 33, so that the end where the float ball 4 is located has a relatively long force arm. When the float ball 4 rises and falls with the liquid level, it is easy to drive the pendulum rod 3 to rotate, even if the liquid level fluctuates slightly, the angle of the pendulum rod 3 can also change, thereby improving the detection sensitivity.

[0034] As shown, Figure 1 and Figure 2As shown, the fixing plate 1 is arranged at the middle part of the container 6, and the distance between the mounting base 2 and the top of the container 6 is equal to the distance between the mounting base 2 and the bottom of the container 6. Arranging the fixing plate 1 at the middle part of the container 6 makes the swing lever 3 be at the middle part of the container 6 when the swing lever 3 is in the horizontal state, and the swing lever 3 can swing upward and downward by a large amplitude, and the amplitudes of the upward and downward swinging are close, so that the measuring range of the liquid level measuring device is also large.

[0035] In the embodiment, the fixing plate 1 is circular in profile, the container 6 is provided with an opening on the wall thereof, and the edge of the fixing plate 1 is connected with the hole wall of the opening. In order to mount the fixing plate 1 on the container 6 and ensure the sealing effect, the opening needs to be formed on the container 6 first, and then the fixing plate 1 is mounted on the opening to seal the opening.

[0036] In the embodiment, the swing lever 3 is made of metal, and specifically, the swing lever 3 in the embodiment is made of aluminum alloy, so that the swing lever 3 has a light weight and high strength and is not easy to deform.

[0037] In the embodiment, the float ball 4 is a hollow metal ball. The float ball 4 is not made of a leather ball but a hollow metal ball, which can avoid the problem of air loss of the leather ball after long time use, so that the service life of the float ball 4 is longer.

[0038] In order to improve the corrosion resistance of the swing lever 3 and the float ball 4, the surface of the swing lever 3 and the float ball 4 can be sprayed with corrosion-resistant paint, so as to avoid corrosion of the swing lever 3 and the float ball 4 caused by long time contact with the medium in the container 6.

[0039] Although the utility model has been described with reference to the preferred embodiments, various improvements can be made and equivalent parts can be replaced without departing from the scope of the utility model. In particular, the technical features mentioned in each embodiment can be combined in any way as long as there is no structural conflict. The utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A liquid level measuring device, characterized in that, The device includes a fixed plate, a mounting base, a swing arm, a float, and a tilt sensor. The fixed plate is disposed on the wall of the container, the mounting base is disposed on the fixed plate, the swing arm is rotatably disposed on the mounting base, the float is disposed at the first end of the swing arm and located inside the container, and the tilt sensor is disposed at the second end of the swing arm and located outside the container.

2. The liquid level measuring device according to claim 1, characterized in that, The swing arm includes a rotating part, a first rod body, and a second rod body. The first rod body and the second rod body are respectively disposed on both sides of the rotating part. The rotating part is cylindrical and rotatably disposed inside the mounting base.

3. The liquid level measuring device according to claim 2, characterized in that, The mounting base includes two opposing flat plates and two opposing arc-shaped plates. Both sides of the mounting base have rectangular openings, and the rotating part is located inside the mounting base.

4. The liquid level measuring device according to claim 3, characterized in that, The inner walls of the arc-shaped plate and the inner walls of the flat plate are both in contact with the surface of the rotating part.

5. The liquid level measuring device according to claim 3, characterized in that, The mounting base is also provided with a sealing gasket, and the surface of the rotating part is in contact with the sealing gasket.

6. The liquid level measuring device according to claim 2, characterized in that, The first rod is located inside the container, and the length of the first rod is greater than the length of the second rod.

7. The liquid level measuring device according to claim 1, characterized in that, The fixing plate is disposed in the middle of the container, and the distance between the mounting base and the top of the container is equal to the distance between the mounting base and the bottom of the container.

8. The liquid level measuring device according to claim 1, characterized in that, The fixing plate has a circular outline, and the container wall has an opening. The edge of the fixing plate is connected to the wall of the opening.

9. The liquid level measuring device according to claim 1, characterized in that, The swing arm is made of metal.

10. The liquid level measuring device according to claim 1, characterized in that, The buoy is a hollow metal sphere.

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