JPH11237272A - Level display device for tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a level display device by which a level visible from a confirmation part such as a confirmation window or the like on the side face of a tank is made easy to see. SOLUTION: In a level display device, a part of at least the side face of a tank 4 comprising a supply port 7 provided with a lid body 9 on the outer circumference is made transparent or translucent in such a way that a level can be confirmed visually, a plurality of spherical floating bodies 12 such as hollow beads, a styrene foams or the like to an extent that the level is covered are housed inside the tank 4, and a convex netlike body 11 as a wire net whose mesh is finer than the size of the floating bodies 12 is installed at the supply port 7 so as to be detachable. Then, a flange part 10 is installed at the outer circumference of the netlike body 11. A protrusion part 18 which protrudes to the outside and which comprises an external thread is formed at the supply port 7. An internal thread which is coupled to the external thread is formed on the lid body 9. The flange part 10 is sandwiched between, and held by, the tip of the protrusion part 8 and the lid body 9. An antibacterial treatment is executed to the surface of the floating bodies 12. Their surface color is set as a fluorescent color. An observation window 6 which protrudes on the side face of the tank 4 is installed. The size of the floating bodies 12 is made sufficiently smaller than the width of the observation window 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid level display device for a tank, and more particularly, to a structure of a device for visually checking a liquid level.

[0002]

2. Description of the Related Art In a conventional liquid level display device for a tank, taking a humidifier for storing water as a liquid in a tank as an example, the water level can be confirmed from outside the humidifier body 1 as shown in FIG. So, on the side of the tank 4 near the bottom of the tank 4,
There is a confirmation window 6 for confirming the water level from the opening 5 on the side surface of the humidifier body 1. When the water level reaches the inside of the confirmation window 6, it is possible to confirm how much water remains in the tank 4. Had become.

[0003]

However, in the above configuration, the liquid such as water seen from the confirmation window is usually transparent in many cases, and the liquid level can be seen only when the liquid level on the tank wall surface due to the surface tension of the liquid. This is because the color of the portion lifted upward is slightly different due to the difference in the refractive index of light, and there is a problem that the liquid level is difficult to see because the change in color is slight. In view of the above problems, an object of the present invention is to provide a liquid level display device for a tank that makes it easy to see the liquid level visible from a confirmation unit such as a confirmation window on the side of the tank.

[0004]

According to the present invention, at least a part of a tank having a supply port provided with a lid on the outer periphery is provided so that the liquid level can be visually checked. In a liquid level display device for a tank that is made transparent or translucent, a plurality of floating bodies whose liquid level is covered are accommodated in the tank.

[0005] Further, the supply port is provided with a net-like body finer than the size of the floating body.

[0006] Further, the net is detachably attached to the supply port.

In addition, a flange portion is provided on the outer periphery of the mesh body, and a projection portion which protrudes outward and has a male screw on the outer periphery is provided on the supply port, and a female screw engaging with the male screw is provided on the lid. The flange is sandwiched between the tip of the projection and the lid.

[0008] Further, the net-like body is formed in a convex shape so as to fit into the protruding portion.

[0009] Further, the net-like body is configured as a wire net.

Further, the floating body is formed as a spherical floating body such as hollow beads or styrene foam.

Further, the surface of the floating body is subjected to an antibacterial treatment.

[0012] Further, the surface color of the floating body is a fluorescent color.

[0013] Further, a projection window is provided on the side surface of the tank, and the size of the floating body is made sufficiently smaller than the width of the observation window.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the embodiment of the present invention shown in FIG. A humidifier that stores water as a liquid in a tank will be described as an example. 1 is a humidifier main body, 2 is a side cover constituting the outer peripheral side surface of the humidifier main body 1, 3 is an upper cover that covers the upper side of the side cover 2, and 4 is inside the side cover 2 and the upper cover 3
Is a tank made by blow molding a nearly transparent synthetic resin material such as PP housed from above, and formed on the side surface of the side cover 2 to observe the water level on the side surface of the tank 4. An observation window 6 projecting so as to fit into the opening 5 is formed, and a supply port 7 for supplying and discharging water is formed on the bottom surface of the tank 4. And a cap-shaped lid 9 having a female screw formed therein for engaging with the male screw. The supply port 7 has a flange portion 10 sandwiched between the tip of the protruding portion 8 and the lid 9, and is formed of a metal mesh formed in a convex shape so as to fit in the protruding portion 8. The body 11 is worn. By configuring the mesh body 11 with a wire mesh, the convex shape is formed by pressing, and the flange portion 10 is made of a sheet metal and can be attached by crimping or welding. it can. In the tank 4, hollow beads having a specific gravity lower than that of water, larger than the mesh of the mesh body 11, and sufficiently smaller than the width of the observation window 6, a fluorescent color on the surface thereof, and an antibacterial treatment are applied. A plurality of spherical floating bodies 12 such as polystyrene foam are stored in the tank 4.
Are stored in such an amount as to evenly cover the water surface.

Next, the operation of the above configuration will be described. Since the plurality of floating bodies 12 are floating on the water surface so as to uniformly cover the water surface of the tank 4 and the size of the floating bodies 12 is sufficiently smaller than the width of the observation window 6, the observation window 5 When the water reaches the surface, the floating body 12 enters the observation window 6 and the floating body 12 can be seen, so that the water surface can be easily checked. Further, since the surface of the floating body 12 is colored in a fluorescent color, it can be more easily confirmed. In addition, since the surface of the floating body 12 is subjected to antibacterial processing, dirt due to adhesion of water scale or the like is less likely to occur, and visibility is less likely to decrease. Since the mesh 11 is fitted to the protruding portion 8 of the supply port 7 so as to fit, when draining from the tank 4, the mesh 11 does not come off after the lid 9 is removed. Thus, the flange portion 10 can be pressed and drained by hand, and the floating body 12 does not flow out of the tank 4. In addition, since the net 11 is detachable, if the floating body 12 is dirty and visibility is reduced, the net 11 is removed and the floating body 12 is taken out, and the net is regenerated beautifully. Can be exchanged.

[0016]

As described above, according to the present invention,
The liquid level display device of the tank makes it easy to see the liquid level visible from a confirmation portion such as a confirmation window on the side of the tank.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of one embodiment of a tank liquid level display device according to the present invention, as viewed from a side.

FIG. 2 is a cross-sectional view of a conventional liquid level display device for a tank, viewed from the side.

[Explanation of symbols]

 Reference Signs List 4 Tank 6 Observation window 7 Supply port 8 Projection 9 Lid 10 Flange 11 Net-like body (wire mesh) 12 Floating body

Claims (10)

[Claims] 1. A liquid level display device for a tank in which at least a part of a side surface of a tank having a supply port provided with a lid on the outer periphery is made transparent or translucent so that the liquid level can be visually confirmed. A liquid level display device for a tank, wherein a plurality of floating bodies whose liquid level is covered are stored in the tank. 2. The liquid level display device for a tank according to claim 1, wherein a net-like body finer than the size of the floating body is provided in the supply port. 3. The liquid level display device for a tank according to claim 2, wherein the mesh member is detachably attached to the supply port. 4. A flange portion is provided on the outer periphery of the mesh body, and a projection having an external thread on the outer periphery and having an external thread is provided on the supply port, and a female screw engaging with the external thread is provided on the lid. 4. The liquid level display device for a tank according to claim 3, wherein the flange portion is formed and the flange portion is sandwiched between a tip end of the protrusion and the lid. 5. The liquid level display device for a tank according to claim 2, wherein the net-like body is formed in a convex shape so as to be fitted to the projecting portion. 6. The liquid level display device for a tank according to claim 2, wherein the net-like body is a wire net. 7. The liquid level display device for a tank according to claim 1, wherein the floating body is a spherical floating body such as a hollow bead or a polystyrene foam. 8. The liquid level display device for a tank according to claim 1, wherein an antibacterial treatment is applied to a surface of the floating body. 9. The liquid level display device for a tank according to claim 1, wherein a surface color of the floating body is a fluorescent color. 10. The observation window according to claim 1, wherein a projection window is provided on a side surface of the tank, and the size of the floating body is made sufficiently smaller than a width of the observation window. Tank level indicator.