JPH041647Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a liquid port plug for a storage battery that has a built-in explosion-proof filter and exhausts air from the storage battery through the filter.

Conventional technology Conventionally, the above-mentioned liquid spout plug has a lower splash-proof tube attached to the lower part of the cylindrical liquid spout body, the bottom surface of which is sloped and a vertical slit formed at the lowest position of the slope. . Exhaust from the storage battery enters the liquid spout through the slit and passes through an explosion-proof filter made of a porous material such as ceramic that is built into the liquid spout body. Electrolyte splashes due to vibrations and electrolyte mist due to gas generation may enter the liquid spout body through the slit, but these flow down the sloping bottom of the lower splash-proof tube and exit from the slit. Return to the storage battery.

Problems to be Solved by the Invention However, in the above-mentioned liquid port plug, droplets and mist of the electrolytic solution that enters through the slit easily reach the explosion-proof filter and easily wet the filter. If the front surface of the filter gets wet, it will become clogged and the exhaust will not be properly vented, causing the problem that the gas pressure inside the battery will increase and the electrolyte level will be pushed up, causing overflow.

An object of the present invention is to provide a liquid spout for a storage battery that prevents electrolyte that has entered the liquid spout from reaching an explosion-proof filter and avoids overflow of the electrolyte due to clogging of the explosion-proof filter.

Means for Solving the Problems In order to achieve the above object, the present invention provides a cap-shaped cap projecting into the liquid spout body between the cylindrical liquid spout body 1 and the lower splash-proof tube 2. An upper splash-proof cylinder 3 is interposed. From the ceiling of this upper splash-proof tube 3,
A partition plate 5 is suspended at a position facing the slit 4 of the upper splash-proof tube 2 to form a gap between it and the bottom surface of the lower splash-proof tube 2 and with one inner wall of the upper splash-proof tube 3. . A bottom plate 6 of the upper splash-proof cylinder 3 is provided on the back side of the partition plate 5 when viewed from the slit 4, and a second slit 7 is formed on the side surface of the upper splash-proof cylinder 3 on the back side. It is.

Function In the present invention, the electrolyte droplets that entered through the slits 4 first collide with the facing partition plate 5, where most of them are captured, flow down the partition plate 5, and then the lower splash-proof tube 2 is tilted. The liquid flows through the bottom surface of the battery and returns to the inside of the battery through the slit 4. Splashes of electrolyte that enter through the gap between the lower end of the partition plate 5 and the bottom of the lower splash-proof tube 2 are also prevented.
It impinges on the bottom plate 6 and is trapped, and only the gas is discharged from the second slit 7 through the explosion-proof filter 8. A small amount of mist brought into the upper splash-proof tube 3 along with the gas is also captured by the side walls and ceiling surface, flows down, and returns into the battery.

Example In the structure shown in FIG. 1, the width of the slit 4 was 3 mm, and the gap between the lower end of the partition plate 5 and the bottom surface of the lower splash-proof cylinder 2 was 2 mm. In addition, the gap between the side part of the partition plate 5 and the inner wall of the upper splash-proof tube 3 is
The opening angle of the second slit 7 was 90°. The height of the upper splash-proof cylinder 3 protruding into the liquid outlet plug main body 1 was set to 1/2 of the height h to the lower surface of the explosion-proof filter 8.

As shown in FIG. 4, it is conceivable not to provide a bottom plate to the upper splash-proof tube 3, but in such a structure, the electrolyte may not be splashed through the gap between the partition plate 5 and the bottom of the lower splash-proof tube 2. Since there is nothing to block the end, the purpose of the present invention cannot be achieved.

Effects of the invention As described above, the present invention is capable of capturing electrolyte droplets that have entered the liquid port plug step by step and returning them to the battery before they reach the splash-proof filter. Its practical value is extremely great in that it can prevent overflow of electrolyte due to clogging caused by wetting with liquid.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing an embodiment of the present invention;
Figure 2 is a cross-sectional view of the upper splash-proof tube taken along the line A-A' in Figure 1, Figure 3 is a cross-sectional view of the upper splash-proof tube taken along the line B-B' in Figure 2, and Figure 4 is the present invention. FIG. 1 is the liquid spout body, 2 is the lower splash-proof tube, 3 is the upper splash-proof tube, 4 is the slit, 5 is the partition plate, 6 is the bottom plate, 7
is the second slit, and 8 is the explosion-proof filter.

Claims (1)

[Scope of utility model registration request] A lower splash-proof tube is attached to the bottom of the cylindrical liquid spout body, and the bottom surface is sloped, and a vertical slit is formed at the lowest point of the slope. In a liquid spout plug for a storage battery that exhausts air through a filter, a cap-shaped upper splash-proof cylinder protruding into the liquid spout body is interposed between the liquid spout body and the lower splash-proof cylinder, and the upper splash-proof cylinder A partition plate is suspended from the ceiling surface of the cylinder at a position facing the slit to form a gap between the bottom surface of the lower splash-proof cylinder and one inner wall of the upper splash-proof cylinder,
A liquid spout plug for a storage battery, wherein a bottom plate of an upper splash-proof cylinder is provided on the back side of the partition plate when viewed from the slit, and a second slit is formed on a side surface of the upper splash-proof cylinder on the back side.