CN218724582U - Liquid level display device for water tank - Google Patents

Abstract

The application relates to the technical field of air conditioning, and discloses a water tank liquid level display device which comprises a floating track, a magnetic floater, an indicating track and a magnetic water level indicator, wherein the floating track is vertically arranged in a water tank and is close to a first side plate, a floating space is limited by the floating track, and the water level of the floating space is consistent with the water level in the water tank; the magnetic floater is arranged in the floating space in a vertically floating manner, and the height of the magnetic floater is consistent with the real-time water level of the water tank; the indication track is vertically arranged outside the water tank and corresponds to the floating track, and the indication track defines an indication space; and the magnetic water level indicator can be movably arranged in the indicating space up and down, and is positioned at the same height as the magnetic floater under the action of the attraction force of the magnetic floater.

Description

Liquid level display device for water tank

Technical Field

The application relates to the technical field of air conditioning, for example to a water tank liquid level display device.

Background

The water washing air conditioner is provided with a water tank to adsorb dust impurities in air by flowing water to improve air quality. If the water tank is transparent material, the aquatic breeds the alga easily and influences quality of water, and if the water tank is non-transparent material, inconvenient user knows the water level in the water tank.

The related art discloses a humidifying device for an air conditioner, which comprises a shell, wherein an air inlet and an air outlet are arranged on the shell; the top of the water tank is provided with an opening, and the water tank is arranged in the shell and used for containing water; the humidifying body extends into the water tank along the opening, so that at least part of the lower part of the humidifying body is positioned in the water tank, and the humidifying body is used for absorbing water in the water tank; and the water level sensor is arranged in the water tank and used for detecting the water level of the water tank.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

water level information obtained through the water level sensor cannot be visually displayed at a user observation visual angle, and judgment of a user on the water quantity of the water tank is influenced.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present application and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a water tank liquid level display device to solve the problem of how to more intuitively display the water level in a water tank.

In some embodiments, the tank level display device comprises a floating rail, a magnetic float, an indicating rail and a magnetic water level indicator, wherein the floating rail is vertically arranged in the tank and is close to the first side plate, the floating rail defines a floating space, and the water level of the floating space is consistent with the water level in the tank; the magnetic floater is arranged in the floating space in a vertically floating manner, and the height of the magnetic floater is consistent with the real-time water level of the water tank; the indication track is vertically arranged outside the water tank and corresponds to the floating track, and the indication track defines an indication space; and the magnetic water level indicator can be movably arranged in the indicating space up and down, and is positioned at the same height as the magnetic floater under the action of the attraction force of the magnetic floater.

In some embodiments, the magnetic float is spherical, and when the water level in the water tank changes, the magnetic float and the magnetic water level indicator attract each other and roll up and down closely to the inner wall of the first side plate.

In some embodiments, the magnetic water level indicator is spherical, and when the water level in the water tank changes, the magnetic water level indicator and the magnetic float attract each other and tightly roll up and down along the outer wall of the first side plate.

In some embodiments, the indication track is a hollow cylinder, and at least one surface of the hollow cylinder facing outwards is made of transparent material.

In some embodiments, the hollow column is filled with a liquid, and the magnetic water level indicator has a buoyancy less than or equal to its own weight within the hollow column.

In some embodiments, the liquid filled inside the hollow cylinder is colored, and the color of the magnetic water level indicator is different from the color of the liquid.

In some embodiments, the first side plate is recessed inwardly to form a receiving groove; the indicating track comprises a transparent cover plate and a bottom plate, wherein the transparent cover plate covers the opening of the accommodating groove to form the hollow cylinder; the bottom plate blocks the opening at the bottom end of the hollow column body.

In some embodiments, the outer wall of the first side plate is provided with water level scale marks corresponding to the transparent cover plate.

In some embodiments, the floating rail comprises a partition plate, the partition plate extends upwards from a bottom plate of the water tank, the partition plate and the first side plate enclose to form the floating rail, and a communication hole is formed in the bottom of the partition plate.

In some embodiments, a magnet is disposed inside the magnetic float, and the magnetic water level indicator is a ferromagnetic material.

The water tank liquid level display device provided by the embodiment of the disclosure can realize the following technical effects:

1. under the condition that the water tank is made of non-transparent materials, a user acquires real-time water level information of the water tank through the position of the indicating track of the magnetic water level indicating piece, the water level information is displayed more visually, and the use of the user is facilitated;

2. water level information is converted and presented based on a mechanical structure, power on and a sensor are not needed, and the water level control device is simple in structure and reliable in work.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic structural diagram of a tank level display apparatus provided in an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of another tank level display provided by the disclosed embodiment;

FIG. 3 is a schematic structural view of another tank level display provided by the disclosed embodiment;

fig. 4 is a schematic structural diagram of another tank level display device provided by the embodiment of the disclosure.

Reference numerals:

110: a first side plate; 210: a floating track; 211: a partition plate; 220: a magnetic float; 310: indicating a track; 320: a magnetic water level indicator.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

In order to improve indoor living environments, many air conditioning apparatuses have a humidity adjusting function. In the process of increasing the humidity, the water tank is required to be used for storing water regardless of the ultrasonic oscillation atomization mode or the heating evaporation mode. In addition, some air cleaning apparatuses, such as a water washing air conditioner, also require a water tank to adsorb dust impurities in air by driving a water circulation flow in the water tank.

Some air conditioning apparatuses provided with a water tank have an automatic water supply function in which water is automatically supplied when the water level in the water tank is lower than a preset value. However, the automatic water supply needs to be realized by laying water pipes, so that the indoor space is messy, and the installation position of the air conditioning equipment is difficult to change by connecting the water pipes. Therefore, most of the water tanks of the air conditioners require the user to manually add water. In this case, the user needs to know the water level of the water tank of the air conditioner in time.

Some air conditioning equipment's water tank is transparent material, and the user of being convenient for observes the water level of water tank. The sunlight of the water tank can shine into the water tank, so that algae and microorganisms in the water body can be rapidly propagated, and the conductor water body can be rapidly deteriorated. In addition, some transparent water tanks are prone to aging and yellowing.

In some air conditioners, a water temperature sensor is provided in a water tank, and a display device presents water level information detected by the water level sensor to a user. The air conditioning equipment in the form can detect the water level only under the condition of powering on and starting up, and is inconvenient to use; and the water level information displayed by the display device is not intuitive for the user.

In order to enable a user to more intuitively observe the water level of the water tank, as shown in fig. 1 to 4, an embodiment of the present disclosure provides a water tank liquid level display device, which includes a floating rail 210, a magnetic floater 220, an indicating rail 310, and a magnetic water level indicator 320, wherein the floating rail 210 is vertically disposed in the water tank and is close to the first side plate 110, the floating rail 210 defines a floating space, and the water level of the floating space is consistent with the water level in the water tank; the magnetic floater 220 is arranged in the floating space in a vertically floating manner, and the height of the magnetic floater 220 is consistent with the real-time water level of the water tank; the indicating track 310 is vertically arranged outside the water tank and corresponds to the floating track 210, and the indicating track 310 defines an indicating space; the magnetic water level indicator 320 is movably disposed in the indicating space up and down, and the magnetic water level indicator 320 is at the same height as the magnetic float 220 by an attractive force of the magnetic float 220.

In embodiments of the present disclosure, the water tank is used to store water, and the water in the water tank is used to humidify or purify the air of the indoor environment.

The water tank includes bottom plate and a plurality of curb plate, and a plurality of curb plates enclose with the water tank and close and inject water storage space. The plurality of side panels includes a first side panel 110, and the first side panel 110 is a surface facing a viewing direction of a user. The floating rail 210 is disposed in the tank and adjacent to the first side plate 110, and in some cases, a portion of an inner wall of the first side plate 110 is a portion of the floating rail 210. The floating rail 210 is vertically disposed to define a floating space. The floating space is used as a part of the water storage space, and the liquid level of the floating space is consistent with that of the water storage space.

When the magnetic float 220 is completely submerged in the water tank, the magnetic float 220 is subjected to a buoyancy force greater than its own weight. The weight of the magnetic float 220 per unit volume is less than the weight of the same volume of water and the density of the magnetic float 220 is less than the density of water. The magnetic float 220 floats on the water surface in the tank, and the height of the magnetic float 220 in the tank is equal to the height of the liquid level in the tank.

The magnetic float 220 is provided in the floating space, the floating rail 210 restricts the movement of the magnetic float 220 in the horizontal direction, and the magnetic float 220 can float only up and down along the floating rail 210.

The indication rail 310 is disposed outside the water tank, and the indication rail 310 is vertically disposed and corresponds to the floating rail 210. Illustratively, the floating track 210 is parallel to the indicating track 310, spaced apart from the first side panel 110.

The magnetic water level indicator 320 is movably disposed up and down on the indication rail 310. The indication rail 310 restricts the movement of the magnetic water level indicator 320 in the horizontal direction, and the magnetic water level indicator 320 can only slide up and down along the indication rail 310.

The magnetic float 220 is attracted to the magnetic water level indicator 320, and when the magnetic float 220 floats up and down with the change of the water level in the water tank, the magnetic water level indicator 320 is pulled by magnetic force to move up and down in the indication track 310. When the water level in the water tank is at a certain level, the height of the magnetic float 220 is equal to the height of the water in the water tank, which is equal to the height of the magnetic water level indicator 320. The height of the magnetic water level indicator 320 within the indication track 310 may be considered as the water level in the water tank. The magnetic water level indicator 320 is located outside the water tank, and a user can intuitively obtain the water level in the water tank by observing the position of the magnetic water level indicator 320 inside the indication track 310.

By using the water tank liquid level display device provided by the embodiment of the disclosure, under the condition that the material of the water tank is non-transparent material, the current water level in the water tank can be visually displayed without setting a communicating vessel, and the water tank liquid level display device has a simple structure, is easy to use and is reliable in work.

Alternatively, the magnetic floater 220 has a cross-section corresponding to the cross-sectional shape of the floating rail 210, and the magnetic floater 220 cannot be turned and rotated within the floating rail 210.

Illustratively, the cross-section of the floating rail 210 is rectangular, and the cross-section of the float is rectangular, and the float is embedded in the floating rail 210. With this arrangement, the magnetic float 220 has a definite up-down direction and front-back direction in the slide rail. When the water level in the water tank changes, the up-and-down floating of the magnetic floater 220 is stable, and small vibration is not easy to occur. Accordingly, the up and down movement of the magnetic water level indicator 320 is stable, which is advantageous for observing the position of the magnetic water level indicator 320 within the indication rail 310.

Optionally, the magnetic float 220 comprises a hollow box and a magnet block connected to each other.

The hollow box serves as a main source of buoyancy, and the magnet block provides magnetic force that attracts the magnetic water level indicator 320. With such a configuration, the magnetic float 220 has a simple structure and is easy to implement.

Optionally, the magnet block is attached below the hollow box.

With this arrangement, the magnetic float 220 is less likely to tip over.

Optionally, the magnetic float 220 is spherical, and when the water level in the water tank changes, the magnetic float 220 and the magnetic water level indicator 320 attract each other and roll up and down closely to the inner wall of the first side plate 110.

The magnetic float 220, which is attracted to the magnetic water level indicator 320, abuts against the inner wall of the floating rail 210 toward the indicating rail 310, thereby generating a frictional force in a vertical direction. The magnetic floater 220 has a spherical shape, and when floating up and down in the floating rail 210, a friction force in a vertical direction is in the form of a rolling friction force. The magnitude of the frictional force is reduced compared to the form in which the frictional force is a sliding frictional force, so that the up-and-down floating of the magnetic floater 220 can be more smoothly performed. Further, the magnetic water level indicator 320 is made more sensitive and accurate for indicating the water level.

Optionally, the magnetic float 220 is a hollow sphere.

With this arrangement, the buoyancy of the magnetic float 220 can be increased, which facilitates the magnetic float 220 to float to the surface of the water when the water level changes.

Optionally, a magnet is disposed inside the magnetic float 220.

With such an arrangement, the material of the housing of the magnetic float 220 is not limited, and the cost of the magnetic float 220 can be reduced.

Optionally, the magnetic water level indicator 320 is spherical, and when the water level in the water tank changes, the magnetic water level indicator 320 is attracted to the magnetic float 220 and rolls up and down closely to the outer wall of the first side plate 110.

The magnetic water level indicator 320, which is attracted to the magnetic float 220, abuts against the inner wall of the indicating rail 310 facing the floating rail 210, thereby generating a frictional force in a vertical direction. The magnetic water level indicator 320 has a spherical shape, and a vertical frictional force is in the form of a rolling frictional force when moving up and down in the indication rail 310. The magnitude of the friction force is reduced compared to the form of the friction force as a sliding friction force. By adopting the arrangement form, on one hand, the force required by the magnetic floater 220 to drive the magnetic water level indicator 320 to move up and down can be reduced, so that the magnetic floater 220 can react more sensitively to the change of the water level; on the other hand, the up and down movement of the magnetic water level indicator 320 within the indication rail 310 can be made smoother, thereby making the magnetic water level indicator 320 more sensitive to the movement of the magnetic float 220.

Optionally, the indication rail 310 includes a first rail plate extending outward from the outer wall of the first side plate 110 and a second rail plate extending outward from the outer wall of the first side plate 110, and a distance between ends of the first rail plate and the second rail plate is smaller than a diameter of the magnetic water level indicator 320.

The first rail plate, the second rail plate and the first side plate 110 enclose to form an indication rail 310, and the magnetic water level indicator 320 slides up and down in the indication rail 310. A certain distance is reserved between the tail end of the first track plate and the tail end of the second track plate to form an observation seam. The user observes the position of the magnetic water level indicator 320 within the sliding track through the observation slit. With this arrangement, it is convenient for a user to observe the position of the magnetic water level indicator 320 within the indication track 310. When the attraction between the magnetic water level indicator 320 and the magnetic floater 220 is disconnected, the attraction cannot be reestablished in case of a long distance, and the position of the magnetic water level indicator 320 may be manually changed by observing the slit to reestablish the attraction between the magnetic water level indicator 320 and the magnetic floater 220.

Optionally, the bottom end of floating rail 210 is lower than the bottom end of indicator rail 310.

When the water level in the water tank is minimized, the magnetic float 220 is located at the bottom end of the floating rail 210. If the attraction between the magnetic float 220 and the magnetic water level indicator 320 is unexpectedly disconnected, the magnetic water level indicator 320 is located at the bottom end of the indication rail 310 by gravity. In the process of filling water into the water tank, the magnetic float 220 floats upwards with the change of water level and gradually enters into the range capable of attracting each other with the magnetic attraction indicating device. With this arrangement, even if the attraction between the magnetic float 220 and the magnetic water level indicator 320 is unexpectedly disconnected, the magnetic float 220 and the magnetic water level indicator 320 are reconnected at each water injection. By adopting the arrangement form, the working reliability of the water tank liquid level display device is improved, and the use by a user is facilitated.

Optionally, the indication track 310 is a hollow cylinder, and at least one surface of the hollow cylinder facing outward is made of a transparent material.

The outside one side of hollow cylinder is the stratum lucidum material, and outside one side is called the observation window, and the user acquires the position of magnetism water level indicator 320 in indicating track 310 through the observation window, and then acquires the water level information of water tank. By adopting the arrangement mode, the structure of the indicating track 310 is simpler and is easy to process, and the production cost of the water tank liquid level display device can be reduced.

Optionally, the hollow cylinder is filled with a liquid, and the buoyancy of the magnetic water level indicator 320 in the hollow cylinder is less than or equal to its own weight.

The hollow cylinder is filled with liquid, the magnetic water level indicator 320 is subjected to buoyancy of the liquid in the hollow cylinder, the buoyancy can offset the gravity of the magnetic water level indicator 320, and the magnetic water level indicator 320 can be driven to float up and down by small force. With this arrangement, the requirement for the attractive force between the magnetic float 220 and the magnetic water level indicator 320 can be reduced, thereby allowing a larger selection space for the material and structure of the magnetic water level indicator 320. In addition, the up and down movement of the magnetic water level indicator 320 is easy to drive, and is more sensitive and accurate to the water level.

Optionally, the liquid filling the interior of the hollow cylinder is colored, and the color of the magnetic level indicator 320 is different from the color of the liquid.

The liquid filled with the liquid inside the hollow cylinder is colored, so that a certain decorative effect can be achieved. The color of the liquid is different from the color of the magnetic level indicator 320, and the user can more clearly see the position of the magnetic level indicator 320 within the indication track 310 by enhancing the ratio.

Optionally, the first side plate 110 is recessed inwards to form an accommodating groove; the indication track 310 comprises a transparent cover plate and a bottom plate, wherein the transparent cover plate covers the opening of the accommodating groove to form a hollow cylinder; the bottom plate blocks the opening at the bottom end of the hollow column.

The first side plate 110 is inwardly depressed, which is inwardly depressed toward the inside of the water tank. The opening of the containing groove faces outwards, and the transparent cover plate covers the opening of the containing groove. By adopting the arrangement mode, the outer vertical surface of the first side surface is a parallel and level surface, so that the appearance is attractive, and the collision is not easy to occur during transportation. The bottom plate blocks the opening at the bottom of the hollow column body, so that the inside of the hollow column body can be filled with liquid. By adopting the arrangement mode, the appearance of the water tank is more attractive.

Optionally, the indication track 310 further comprises a top plate covering the opening at the top of the hollow cylinder.

By adopting the arrangement form, the inside of the hollow column body is a closed space, and the filled liquid can be prevented from evaporating or spilling. The top plate and the bottom plate limit the movement of the magnetic water level indicator 320, and can prevent the magnetic water level indicator 320 from being separated from the hollow cylinder.

Optionally, the outer wall of the first side plate 110 is provided with water level scale lines corresponding to the transparent cover plate.

The water level scale lines are arranged, so that a user can know the water level in the water tank more accurately through the magnetic water level indicating piece 320 and the water level scale lines, and the use of the user is further facilitated by adopting the arrangement form.

Optionally, the floating rail 210 includes a partition 211, the partition 211 extends upward from the bottom plate of the water tank, the partition 211 and the first side plate 110 enclose to form the floating rail 210, and a communication hole is opened at the bottom of the partition 211.

The floating rail 210 is located in the water storage space, and the floating rail 210 serves to define a space for the magnetic floater 220 to float up and down. The partition 211 extends upward from the bottom plate of the tank and encloses the first side plate 110 to form a floating rail 210. With such an arrangement, it is possible to simplify the structure of the floating rail 210 while reducing the distance between the magnetic float 220 and the magnetic water level indicator 320, thereby increasing the attractive force between the magnetic float 220 and the magnetic water level indicator 320. The bottom plate of the partition 211 is provided with a communication hole, the liquid level inside the floating rail 210 is the same as the liquid level of the water storage space, and the height of the magnetic floater 220 can be regarded as the liquid level of the water tank.

Optionally, a magnet is disposed inside the magnetic float 220, and the magnetic water level indicator 320 is a ferromagnetic material.

A magnet is disposed inside the magnetic float 220, and the magnetic water level indicator 320 is a ferromagnetic material. This prevents the magnet from being exposed to interference with other electromagnetic signals, as compared to the magnetic water level indicator 320 in which the magnet is provided. The attraction of the magnet and the ferromagnetic material may be free from considering the repulsive force when the magnetic poles are the same, so that the installation direction of the magnetic floater 220 and the installation direction of the magnetic water level indicator 320 are not limited, and the installation of the magnetic floater 220 and the magnetic water level indicator 320 is facilitated.

The above description and the drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A tank level display device, comprising:

the floating rail is vertically arranged in the water tank and is close to the first side plate of the water tank, the floating rail defines a floating space, and the water level of the floating space is consistent with the water level in the water tank;

the magnetic floater is arranged in the floating space in a vertically floating manner, and the height of the magnetic floater is consistent with the real-time water level of the water tank;

the indicating track is vertically arranged outside the water tank and corresponds to the floating track, and the indicating track defines an indicating space;

and the magnetic water level indicator can be movably arranged in the indicating space up and down, and is positioned at the same height as the magnetic floater under the action of the attraction force of the magnetic floater.

2. Tank level display device according to claim 1,

the magnetic floater is spherical, and when the water level in the water tank changes, the magnetic floater and the magnetic water level indicator attract each other and tightly cling to the inner wall of the first side plate to roll up and down.

3. Tank level display device according to claim 2,

the magnetic water level indicator is spherical, and when the water level in the water tank changes, the magnetic water level indicator and the magnetic float attract each other and tightly adhere to the outer wall of the first side plate to roll up and down.

4. Tank level display device according to claim 3,

the indication track is a hollow cylinder, and at least one outward surface of the hollow cylinder is made of transparent materials.

5. Tank level display device according to claim 4,

the hollow column is filled with liquid, and the buoyancy of the magnetic water level indicator in the hollow column is smaller than or equal to the gravity of the magnetic water level indicator.

6. Tank level display device according to claim 5,

the liquid filled in the hollow cylinder is colored, and the color of the magnetic water level indicator is different from that of the liquid.

7. Tank level display device according to claim 5,

the first side plate is inwards sunken to form an accommodating groove;

the indication track includes:

the transparent cover plate covers the opening of the accommodating groove to form the hollow cylinder;

and the bottom plate is used for plugging the opening at the bottom end of the hollow column body.

8. Tank level display device according to claim 7,

the outer wall of the first side plate corresponds to the transparent cover plate and is provided with water level scale marks.

9. A tank level display according to any of claims 1 to 8, wherein the floating rail comprises:

the baffle upwards extends from the bottom plate of water tank, the baffle with first curb plate encloses to close and forms the track that floats, the intercommunicating pore has been seted up to the bottom of baffle.

10. Tank level display device according to one of the claims 1 to 8,

the inside magnet that is provided with of magnetism float, magnetism water level indicator is ferromagnetic material.

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