CN216746342U - Liquid level detection system - Google Patents

Abstract

The present disclosure provides a liquid level detection system comprising a container containing a liquid of which a liquid level is to be measured; the liquid level detection system includes fixed pulley mechanism, fixed pulley mechanism includes: at least two fixed pulleys; a float located within the container; a first counterweight located outside the container; a fixed sheave rope having one end connected to the float and then extending across the at least two fixed sheaves and the other end connected to the first counterweight. The liquid level detection system is capable of at least one of detecting liquid level in real time, accurately detecting liquid level, durable, and inexpensive.

Description

Liquid level detection system

Technical Field

The present disclosure relates to a liquid level detection system, and more particularly, to a liquid level detection system for detecting a liquid level in a situation where a water quality environment is severe.

Background

Need wash the vehicle after carrying out various processing technology to parts such as automobile body in the automobile manufacturing, the washing water is stored in sealed container usually to need monitor the water level along with abluent the washing water that in time supplyes, avoid leading to unable washing and finally leading to whole production line production efficiency to reduce because the water level is low excessively. Therefore, a need exists for a liquid level detection device that is timely, accurate, and durable.

SUMMERY OF THE UTILITY MODEL

The present disclosure relates to a liquid level detection system that enables at least one of detecting a liquid level in real time, detecting the liquid level accurately, durable, and inexpensive.

In one aspect, the present disclosure provides a liquid level detection system comprising a container containing a liquid whose level is to be measured;

it is characterized in that the liquid level detection system comprises a fixed pulley mechanism, and the fixed pulley mechanism comprises:

at least two fixed pulleys;

a float located within the container;

a first counterweight located outside the container;

a fixed sheave rope connected at one end to the float and then extending across the at least two fixed sheaves and connected at the other end to the first counterweight.

Can be with outside the liquid level in the water tank is equivalent to be converted to the water tank with mechanical mode through fixed pulley mechanism, so not only can accurate real-time detection liquid level, moreover cheap durable.

According to one or more aspects of the present disclosure, the first counterweight includes a counterweight having an in-operation mass that is adjustable by a user.

Through setting up the variable weight piece that the quality is adjustable, the user can conveniently adjust the balance of fixed pulley mechanism according to on-the-spot actual conditions.

According to one or more aspects of the present disclosure, the first weight is another container in which water is contained.

By setting the weight change member to water, only the addition or discharge of water is required to easily adjust the mass of the first counter weight.

According to one or more aspects of the present disclosure, a projection of a first fixed sheave of the at least two fixed sheaves in a vertical direction coincides with a horizontal cross section of the container, and a projection of a second fixed sheave of the at least two fixed sheaves in the vertical direction is arranged outside the horizontal cross section of the container.

Through setting up the position to the fixed pulley, use two fixed pulleys to realize the output of liquid level in the container, simple structure.

According to one or more aspects of the present disclosure, the first counterweight includes a height sensor fixed to an outer surface thereof.

Through setting up height sensor, can avoid height sensor to set up in the container with the cooperation of fixed pulley mechanism to height sensor can directly export the liquid level with electronic mode, and is more directly perceived.

According to one or more aspects of the present disclosure, the liquid in the vessel is recycled industrial cleaning water and contains a large amount of impurities that make the water quality extremely poor.

The disclosure is particularly effective in environments with extremely poor water quality where sensors, observation windows, intercommunicating vessels, etc. within the container are not effective.

According to one or more aspects of the present disclosure, a gravity of the float is equal to a gravity of the first weight.

By setting the weight force of the buoyant member equal to the weight force of the first weight member, for example, is applicable to a case where there is only one fixed pulley mechanism, so that the balance of the entire fixed pulley mechanism can be effectively maintained in this case.

According to one or more aspects of the present disclosure, the liquid level detection system further comprises an additional fixed pulley mechanism, the additional fixed pulley mechanism comprising:

at least two additional fixed pulleys;

an additional weight, the additional weight located outside the container;

an additional crown block rope having one end connected to the additional counterweight and then extending across the at least two additional crown blocks and another end connected to the first counterweight.

Through setting up additional fixed pulley mechanism, can make the output of liquid level more directly perceived in the container, the height of additional counter weight and the high synchronous variation that floats in the container, rather than change along opposite direction, more accord with user's custom, the convenient observation.

According to one or more aspects of the present disclosure, the fixed sheave rope and the section of the additional fixed sheave rope connected to the first counterweight are each oriented vertically, and the sum of the gravity forces of the additional counterweight and the float is equal to the gravity force of the first counterweight.

By arranging the section connected to the first counterweight in a vertical orientation, the balance of the fixed pulley mechanism can be set in a simpler manner.

According to one or more aspects of the present disclosure, the segments of the fixed sheave rope and the additional fixed sheave rope connected to the first counterweight are each oriented at an incline, and a sum of a vertical component of a force on the fixed sheave rope and a vertical component of a force on the additional fixed sheave rope is equal to a gravitational force of the first counterweight.

By arranging the section connected to the first counterweight in an inclined orientation, more options are provided for the location of the additional fixed pulley mechanism.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Moreover, like reference numerals refer to like parts throughout the several views of the drawings. In the drawings:

FIG. 1 is a schematic view of a first embodiment of a liquid level detection system according to the present disclosure;

FIG. 2 is a schematic view of a second embodiment of a liquid level detection system according to the present disclosure;

FIG. 3 is a schematic view of a third embodiment of a liquid level detection system according to the present disclosure;

FIG. 4 is a schematic view of a fourth embodiment of a liquid level detection system according to the present disclosure;

Detailed Description

The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the disclosure. It should be understood, however, that the present disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, the embodiments described below are intended to provide a more complete disclosure of the present disclosure, and to fully convey the scope of the disclosure to those skilled in the art. It is also to be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

It should be understood that throughout the drawings, like reference numerals refer to like elements. In the drawings, the size of some of the features may be varied for clarity.

It is to be understood that the terminology used in the description is for the purpose of describing particular embodiments only, and is not intended to be limiting of the disclosure. All terms (including technical and scientific terms) used in the specification have the meaning commonly understood by one of ordinary skill in the art unless otherwise defined. Well-known functions or constructions may not be described in detail for brevity and/or clarity.

As used in this specification, the singular forms "a", "an" and "the" include plural referents unless the content clearly dictates otherwise. The terms "comprising," "including," and "containing" when used in this specification specify the presence of stated features, but do not preclude the presence or addition of one or more other features. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items. The terms "between X and Y" and "between about X and Y" as used in the specification should be construed to include X and Y. The term "between about X and Y" as used herein means "between about X and about Y" and the term "from about X to Y" as used herein means "from about X to about Y". "upstream" and "downstream" are described with respect to the direction of flow of a gas or liquid. Further, in the drawings, the lines crossing in solid form indicate communication between crossing lines at the crossing points, and the lines crossing in blank form indicate non-communication between crossing lines at the crossing points.

Currently, for level detection, it is common to install a level sensor directly in the tank, for example, or to display the level of the liquid, for example, via a connector. However, both the liquid level sensor and the communicating vessel which are arranged in the water tank are only suitable for the condition of better water quality environment, when the water quality environment is poor, the liquid level sensor is easy to break down and the communicating vessel is easy to block, so that the liquid level detection function is invalid. In addition, the liquid level sensor and the communicating vessel are usually only suitable for detecting the liquid level of water, and the liquid level sensor and the communicating vessel cannot accurately detect the liquid level for a long time due to the chemical properties or viscosity of other liquids.

The cleaning water in the automobile manufacturing process is the condition of poor water quality environment. This is because automobile parts subjected to various treatments are frequently cleaned in automobile manufacturing processes, and cleaning water is generally recycled to save water instead of being used once every time, so that the cleaning water is stored in a sealed container or a water tank and returned to the water tank again after cleaning, which causes a large amount of impurities such as silt, anti-corrosion wax, oil stain, cleaning agent residue, and the like to be present in the cleaning water, and the water quality becomes worse as the number of water cycles increases. And the water is periodically replaced only after a certain number of cycles or after a certain time. The water level needs to be monitored constantly in the cleaning process, and the water level needs to be returned or supplemented with water in time under the condition of too low water level so as to avoid influencing subsequent cleaning and avoid unnecessary pressure on the water tank caused by continuous water injection under the condition of too high water level. And because the quality of water in the water tank is relatively poor, lead to the level sensor in the water tank to use and become the trouble after a period of time, the linker also can cause the jam because silt, greasy dirt etc.. Meanwhile, if a glass observation window is directly arranged on the side wall of the container, the observation cannot be continuously carried out due to the fact that silt, oil and the like are quickly adhered to the observation window under the condition of poor water quality.

The present disclosure provides a liquid level detection system that essentially converts the liquid level in the water tank into the water tank through a mechanical means in an equivalent manner, thereby directly observing or detecting the liquid level, thereby avoiding the harsh environment in the water tank. More specifically, this disclosure is outside through the liquid level equivalence conversion in the fixed pulley system with the water tank, has not only avoided the adverse circumstances in the water tank, moreover through the mechanical mode can be in real time and directly demonstrate the liquid level or export for the user directly intuitively accurately. For level sensor etc. in the water tank, the pulley system is more durable and more accurate. Accordingly, the liquid level detection system according to the present disclosure is capable of at least one of detecting a liquid level in real time, detecting the liquid level accurately, being durable and inexpensive, and preferably, is capable of achieving all of the above objects. Furthermore, although the liquid level detection system in the present disclosure is described with respect to the water level within the water tank, it should be understood that the liquid level detection system may be used to detect the liquid level of various other liquids and is not affected by the kind, nature, etc. of the liquid to some extent compared to conventional detection methods, consistent with the general knowledge in the art.

[ first embodiment ]

Referring to fig. 1, fig. 1 is a schematic diagram of a first embodiment of a fluid level detection system 1000 according to the present disclosure. As shown in fig. 1, the liquid level detection system 1000 includes a container 1, and a cleaning liquid is stored in the container 1. In the present embodiment, the cleaning liquid is industrial water, but it should be understood that other types of liquids may be stored in the container 1. The container 1 comprises a water inlet 14 and a water outlet 15. The water outlet 15 may be connected to a spray gun or a shower head or the like to clean the corresponding parts of the automobile. The cleaned water is collected and returned to the container 1 via the water inlet 14 for recycling. Thus, a large amount of water resources can be saved, but the water quality in the container 1 is poor and not suitable for the traditional water level detection mode as explained in detail above. The container 1 includes an upper case 11 and a lower case 12, and the upper case 11 is detachably connected to the lower case 12. The container 1 also comprises a life saving device 13, the container 1 is very bulky in an automobile manufacturing workshop and needs to be cleaned after the industrial water is recycled for a certain time, and the life saving device 13 prevents the danger which can be generated when cleaning personnel clean the container. The life saving device 13 is for example a life buoy.

As shown in fig. 1, the liquid level detection system 1000 includes a liquid level detection mechanism 2. The liquid level detection mechanism 2 comprises a fixed pulley mechanism. The fixed pulley mechanism comprises a buoyant member 20, a first counterweight 21, a pulley cable 22, and at least two fixed pulleys 240, 241. A float 20 is provided within the container and has a mass and volume arranged to float on the surface of the liquid within the container 1 without being subjected to external forces. A first counterweight 21 is arranged outside the container and is connected to the buoy 20 by means of a pulley rope 22. A pulley rope 22 is connected between the buoyant member 20 and the first counterweight 21 across the crown pulleys 240, 241 as shown in fig. 1. The pulley rope 22 is made of a flexible but non-stretchable material so that the forces are the same throughout the pulley rope. The weight of the first counter weight 21 is set to be the same as that of the floating member 20. In this way, when the initial state is stationary without receiving an external force, the fixed pulley mechanism including the float 20, the first counterweight 21, the pulley rope 22, and the fixed pulleys 240 and 241 maintains a stationary stable state. When the fixed pulley mechanism is provided in the liquid detection system 1000, the fixed pulley mechanism will eventually be maintained in the state as shown in fig. 1, i.e., the state in which the pulley rope 22 is tensioned and the float 20 floats on the liquid surface in the container 1. The float 20 will then lift concomitantly with the rise and fall of the liquid level in the container, and the first counterweight 21, which is connected to the float 20 via the pulley rope 22, will then lift in the opposite direction. In this way, the liquid level in the container 1 can be directly known by observing the height of the first counterweight 21 located outside the container 1. The level detection system 1000 may further comprise a scale 23 located outside the container 1. The scale 23 may be used in cooperation with the first weight 21 to indicate the liquid level. In the embodiment of fig. 1, the high level scale of the scale 23 is below and the low level scale is above, since the elevation and height of the float 20 and the first weight 21 are opposite, i.e. the first weight 21 is in the low position when the float 20 is in the high position and the first weight 21 is in the high position when the float 20 is in the low position.

The principle of the liquid level detection mechanism 2 being maintained in the state shown in fig. 1 will be explained later. It should be noted that the central axis of the fixed pulley is fixed for the fixed pulley, the function of the fixed pulley is to change the direction of the force, but not the magnitude of the force, and the pulling forces at the two ends of the rope are equal. The structure of the crown block and the corresponding principles are well known in the art and will not be described in detail here.

In order for the liquid level detection mechanism 2 to be able to function, the initial state of the float 20 needs to be set not higher than the liquid level, i.e. needs to be in contact with the liquid level, e.g. the height of the float 20 can be lowered by lifting the first counterweight 21 if the float 20 is too high. If the float 20 is located below the liquid surface, then the float 20 is subjected to the buoyancy from below, its own weight and the tension from the pulley rope 22 above, since the weight of the float 20 and the first counterweight 21 is the same and the tension at each pulley rope is the same, so the tension from the pulley rope 22 above is equal to the gravity of the float 20 itself, at which point the float 20 is in an unbalanced state and will rise due to the buoyancy up to just off the liquid surface, i.e. the buoyancy is 0. Therefore, the floating member 20 in the equilibrium state at this time can accurately represent the height of the liquid surface.

The pulley rope of the single fixed pulley mechanism comprises a horizontal section and two vertical sections, the vertical sections are respectively connected with two heavy objects, such as the floating member 20 and the first balance weight 21, and the horizontal section spans two fixed pulleys. The vertical section connecting the two weights hangs down in the vertical direction due to the effect of gravity. The present embodiment makes it possible to convert the height of the floating member 20 located inside the container 1 to the height of the first counter weight 21 located outside the container 1 by providing at least two fixed pulleys 240, 241 and offsetting the two fixed pulleys in the horizontal direction, i.e., providing the fixed pulley 240 above the container 1 and providing the fixed pulley 241 outside the container 1 (more specifically, the projection of the fixed pulley 240 in the vertical direction coincides with the horizontal cross section of the container and the projection of the fixed pulley 241 in the vertical direction is arranged outside the horizontal cross section of the container). And since the first balance weight 21 and the floating member 20 are lifted and lowered in opposite directions, the liquid level in the container 1 can be accurately read in real time through the position of the first balance weight 21 via the scale 23.

As can be seen from the above explanation, the floating member 20 in this embodiment can output the liquid level accurately in real time, and since the reading is performed outside the container 1, it is not affected by the internal environment of the container 1.

The two fixed pulleys 240, 241 in fig. 1 are arranged to have the same vertical height, and it should be understood that the heights of the two fixed pulleys 240, 241 may be arranged to be different according to the relevant principle of the fixed pulleys, and still not affect the normal use of the whole liquid level detection system.

[ second embodiment ]

A second embodiment will be described with reference to fig. 2. In the present embodiment, the configuration and operation other than the first balance weight 21 are similar to those in the first embodiment described above, and therefore, similar constituent elements are denoted by the same reference numerals or symbols, and will be omitted from illustration and description or will be briefly described. Hereinafter, points different from the first embodiment will be mainly described.

As shown in fig. 2, in the second embodiment, the first counter weight 21 includes a weight member 210 and a weight changing member 211. In operation, the mass of the fixed weight member 210 is fixed and not variable, and the mass of the variable weight member 211 can be changed by a user according to requirements. For example, the weight 210 may be a hollow container, the weight 211 may be a liquid contained within the container, and a user may change the mass of the weight 211 by adding or removing liquid. The provision of the weight-changing member 211 is advantageous in that the mass of the first balance weight 21 can be changed as desired in the operation of the user. In actual operation, due to the influence of frictional resistance, liquid viscosity, and the like of the pulley rope, a theoretically perfect condition cannot be achieved, and thus the weights of the first counter weight 21 and the floating member 20 in an actual equilibrium state are not exactly the same, and therefore, the weight of the first counter weight 21 can be finely adjusted to achieve the actual equilibrium state. In addition, in actual use, the initial balance state of the liquid level detection mechanism 2 may not be maintained due to wear of the pulley rope and more dirt adhered to the float 20 as time goes by, and the first balance weight 21 may be finely adjusted. It should be understood that the counterweight 210 may also be omitted directly, the first counterweight 21 being arranged with variable overall mass. The advantage of the weight 211 being arranged in a liquid is that the mass can be adjusted more easily and quickly.

[ third embodiment ]

A third embodiment will be described with reference to fig. 3. In the present embodiment, the configuration and operation other than the liquid level detection mechanism 2 are similar to those in the first embodiment described above, and therefore, similar constituent elements are denoted by the same reference numerals or symbols, and will be omitted from illustration and description or will be briefly described. Hereinafter, points different from the first embodiment will be mainly described.

The main difference between the third embodiment of fig. 3 and the first embodiment of fig. 1 is that the high level scale of the scale 23 in fig. 1 is below, while the low level scale is above. The low level scale of scale 23 in fig. 3 is below, while the high level scale is above, i.e. the same as normal reading habits, which is more convenient for the user to observe and read.

To achieve the reversal of the scale 23 relative to the first embodiment of fig. 1, the third embodiment of fig. 3 also includes an additional fixed pulley mechanism relative to the set of fixed pulley mechanisms of fig. 1 (including two fixed pulleys and one pulley cable). An additional fixed pulley mechanism is connected in series with the fixed pulley mechanism.

Specifically, the additional fixed pulley mechanism includes additional fixed pulleys 242, 243, an additional fixed pulley rope 221, and an additional counterweight 25. A crown block rope 220 is connected between the float 20 and the first counterweight 21 across the crown blocks 240, 241, and an additional crown block rope 221 is connected between the first counterweight 21 and the additional counterweight 25 across the additional crown blocks 242, 243. In the present embodiment, the weight force of the floating member 20 is set equal to the weight force of the additional weight 25, and the weight force of the first weight 21 is set equal to twice the weight force of the floating member 20, that is, the weight force of the floating member 20 plus the weight force of the weight 25. In fig. 3 the vertical sections of the fixed sheave rope 220 and the additional fixed sheave rope 221 are each vertically oriented, in particular the vertical sections of the fixed sheave rope 220 and the additional fixed sheave rope 221 connected to the first counterweight 21 are each vertically oriented. With this arrangement, the liquid level detection system 2 in the third embodiment of fig. 3 can also perform liquid level detection as in the liquid level detection system in fig. 1, and by adding the additional fixed pulley mechanism, not only the scale 23 can be reversed, but also the distance of the additional counterweight 25 can be adjusted more flexibly, for example, according to the factory environment, etc., to facilitate reading for the user.

Furthermore, the lengths of the fixed sheave rope 220 and the additional fixed sheave rope 221 are preferably set to be the same, so that the height of the additional weight 25 can be directly equivalent to the height of the floating member 20. It should be understood that the lengths of the fixed pulley rope 220 and the additional fixed pulley rope 221 may be set to be different, and the same object can be achieved by simple conversion and adjustment of the scale.

Further, the vertical sections of the fixed sheave rope 220 and the additional fixed sheave rope 221 connected to the first counter weight 21 are preferably provided in a vertical orientation in which the vertical sections have only a force in the vertical direction, and therefore there is no need to consider the balance of the force component in the horizontal direction on the first counter weight 21. It should be understood, however, that the vertical sections of the fixed sheave rope 220 and the additional fixed sheave rope 221 that are connected to the first counterweight 21 may also be disposed in an oblique orientation with respect to the vertical, it should be noted, however, that the gravitational relationship of the first counterweight 21, the additional counterweight 25 and the float 20 needs to be adjusted at this time, since the force on the fixed pulley rope 220 is equal to the weight of the buoyant member 20, while the force on the additional fixed pulley rope 221 is equal to the force on the additional counterweight 25, but, due to the inclined orientation of the vertical section connected to the first counterweight 21, the horizontal component of the force on the fixed sheave rope 220 is equal to the horizontal component of the force on the additional fixed sheave rope 221, and in order to maintain the balance of the entire liquid level detection system in a state free from an external force, the sum of the vertical component of the force on the fixed pulley rope 220 and the vertical component of the force on the additional fixed pulley rope 221 needs to be equal to the first counter weight 21.

[ fourth embodiment ]

A fourth embodiment will be described with reference to fig. 4. In the present embodiment, the configuration and operation other than the scale 23 are similar to those in the first embodiment described above, and therefore, similar constituent elements are denoted by the same reference numerals or symbols, and will be omitted from illustration and description or will be briefly described. Hereinafter, points different from the first embodiment will be mainly described.

In fig. 4, the scale 23 is provided as an electronic scale, and a height sensor 26 is provided on the outer surface of the first counter weight 21. The height sensor 26 may be used to detect the height of the first counter weight 21 and output it to the electronic scale 23 by simple conversion. Therefore, the low liquid level scale of the scale 23 is below, and the high liquid level scale is above, which is the same as the normal reading habit, so that the user can observe and read the liquid level scale more conveniently. And because the height sensor 26 is located outside the vessel 1, the harsh environment inside the vessel 1 is also protected from the influence of the height sensor 26.

From the above description, it can be seen that the present disclosure provides a liquid level detection system that is capable of detecting liquid levels in harsh environments in a quasi-real time. Although the above describes the embodiments, it should be understood that the technical solutions of the embodiments may be combined with each other as needed, for example, the weight change member in the second embodiment of fig. 1 may be applied to the first embodiment, the third embodiment, and the fourth embodiment.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not depart from the spirit of the embodiments of the present application, and they should be construed as being included in the scope of the claims and description of the present application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (10)

1. A liquid level detection system comprising a container containing liquid of which a liquid level height is to be measured;

characterized in that, the liquid level detection system includes fixed pulley mechanism, fixed pulley mechanism includes:

at least two fixed pulleys;

a float located within the container;

a first counterweight located outside the container;

a fixed sheave rope having one end connected to the float and then extending across the at least two fixed sheaves and the other end connected to the first counterweight.

2. The fluid level detection system of claim 1, wherein the first weight comprises a weight member having an in-operation mass that is adjustable by a user.

3. The fluid level detection system of claim 2, wherein the first counterweight is another container having water contained therein.

4. The liquid level detection system of claim 1, wherein a projection of a first fixed sheave of the at least two fixed sheaves in a vertical direction is located within a horizontal cross section of the container, and a projection of a second fixed sheave of the at least two fixed sheaves in a vertical direction is disposed outside the horizontal cross section of the container.

5. The fluid level detection system of any one of claims 1-4, wherein the first weight comprises a height sensor secured to an outer surface thereof.

6. A liquid level detection system according to any one of claims 1 to 4 wherein the liquid in the vessel is recycled industrial cleaning water and contains a significant amount of impurities which make the water quality extremely poor.

7. A liquid level detection system according to any one of claims 1-4, characterised in that the weight force of the float is equal to the weight force of the first weight.

8. The fluid level detection system of any one of claims 1-4, further comprising an additional fixed pulley mechanism, the additional fixed pulley mechanism comprising:

at least two additional fixed pulleys;

an additional weight, the additional weight located outside the container;

an additional crown block rope having one end connected to the additional counterweight and then extending across the at least two additional crown blocks and another end connected to the first counterweight.

9. The liquid level detection system of claim 8, wherein the fixed sheave rope and sections of the additional fixed sheave rope connected to the first counterweight are each oriented vertically, and a sum of the weights of the additional counterweight and the float is equal to the weight of the first counterweight.

10. The liquid level detection system of claim 8, wherein the fixed sheave rope and the section of the additional fixed sheave rope connected to the first counterweight are each in an inclined orientation, and a sum of a vertical component of the force on the fixed sheave rope and a vertical component of the force on the additional fixed sheave rope is equal to a gravitational force of the first counterweight.

Images