JPS6027442Y2 - fuel strainer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel strainer that is interposed in a fuel passage, for example, in order to precipitate and remove impurities in fuel that is fed from a fuel tank to an engine.

In conventional fuel strainers, when the inside of the strainer cup is agitated due to external vibrations or an increase in fuel flow rate, impurities that have settled at the bottom of the strainer come to the surface and are mixed into the fuel passing through the strainer cup. There is a risk that this will happen.

An object of the present invention is to provide a strainer with a simple structure that eliminates such concerns.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.T is a fuel tank of a motorcycle, and a known cock C is attached to the bottom plate of the fuel tank, and a fuel delivery pipe 2 protruding to the side of the cock body 1 has a fuel tank T. A fuel conduit 3 is connected to a carburetor of an engine (not shown).

Thus, the cock C can open and close the fuel passage from the fuel tank T to the fuel conduit 3 as appropriate.

A strainer mounting tube 1a is integrally connected to the lower end of the cock body 1, and the upper end of a cup-shaped protective cover 5 containing a transparent glass strainer cup 4 is removably screwed onto this. This cover 5 cooperates with the strainer mounting cylinder 1a to clamp the mounting flange 4a on the outer periphery of the upper end of the strainer cup 4.

A fuel passage 61 connected to the valve portion in the cock C and a fuel passage 6 □ connected to the fuel delivery pipe 2 are opened at the upper opening of the strainer cup 4 .

A partition 7 is removably sunk into the strainer cup 4.

This partitioning device 7 includes a base plate 8 supported on the bottom of the strainer cup 4, and a partition plate connected to the base plate 8 via a support 10 of a certain length to divide the inside of the strainer cup 4 into two upper and lower chambers a and b. It consists of 9.

The partition plate 9 has a funnel shape as a whole, has a through hole 11 in its center, and has a sediment guiding slope 12 on its upper surface that descends toward the through hole 11. A bubble release notch 13 is provided.

On the other hand, since the substrate 8 and the partition plate 9 are formed symmetrically, and therefore both 8 and 9 are compatible, their vertical relationship does not matter when inserted into the strainer cup 4.

In addition, 14 in the figure is a viewing window opened in the protective cover 5.

Next, the operation will be explained. When the cock C is opened, the fuel in the fuel tank T passes through the valve part of the cock C, and once flows into the strainer cup 4 through the passage 61.

At this time, impurities such as water and iron rust contained in the fuel descend through the upper chamber a, and when they reach the partition plate 9, they are guided to the through hole 11 by the sediment guiding slope 12 and pass through it. and settle at the bottom of the lower chamber.

On the other hand, the fuel from which impurities have been separated is turned upward and flows out into the passage 6°, and is fed to the carburetor of the engine via the delivery pipe 2 and the conduit 3.

When the inside of the strainer cup 4 is agitated due to vibrations while the vehicle is running or a large amount of fuel passes through the strainer cup 4, and the precipitates float to the surface, most of them are removed from the partition plate 9.
It is blocked and held in the lower chamber.

Therefore, once the impurities have precipitated, the strainer cup 4
It will not be mixed in with the fuel passing through it again.

In addition, in the partition tool 7, the partition plates 9 are arranged in a plurality of upper and lower stages,
If the inside of the strainer cup 4 is subdivided by these, it will be more effective to prevent the precipitated impurities from flowing out.

The state of precipitation of impurities in the strainer cup 4 can be seen from the outside through the viewing window 14 of the protective cover 5, and when the amount of precipitation increases, the strainer cup 4 is removed and the inside is cleaned. At that time, since the partition 7 inside the cup can be pulled out to the outside, cleaning is easy.

As described above, according to the present invention, the inside of the strainer cup 4 is divided into at least two upper and lower chambers a and b by the partition plate 9, so that even if impurities that have settled in the lower chamber are stirred, they will not flow into the upper chamber a. Since the migration was suppressed by the partition plate 9,
Re-mixing of impurities into the passing fuel can be prevented, and the original function of the fuel strainer can be fully demonstrated.

Furthermore, the partition plate 9 has a through hole 11, and its upper surface is formed with a precipitation-inducing slope 12 that descends toward the through hole 11, so this partition plate 9 prevents impurities from settling into the lower chamber. Not at all.

[Brief explanation of drawings]

FIG. 1 is a longitudinally sectional side view of a main part of an embodiment of the present invention, and FIG. 2 is a perspective view of a partition therein. 4... Strainer cup, 9... Partition plate, 11... Through hole, 12... Sediment guiding slope, a... Upper part Chamber, b...Lower chamber.

Claims (1)

[Scope of utility model registration request] The inside of the strainer cup 4 into which fuel is introduced from the upper part is divided into at least two upper and lower chambers a and b by a partition plate 9, a through hole 11 is provided in the partition plate 9, and the upper surface of the partition plate 9 is directed toward the through hole 11. A fuel strainer formed of a sediment guiding slope 12 that descends from the slope.