JPH0143122Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a strainer for a dust removal manhole used in sewerage equipment.

(Prior art) When a pump equipment is installed in a part of the above-mentioned sewerage equipment, it is desirable that the dust in the sewage does not flow into the pump equipment, so the dust in the sewage is removed in the middle of the inflow pipe to the pump equipment. A dust removal manhole is installed for this purpose, and a strainer is installed inside this manhole. The mainstream strainer is a bucket type strainer using wire mesh, flat bar screen, punched metal, or the like.

(Problems to be Solved by the Invention) However, all of the above-mentioned conventional strainers have a drawback in that they cannot easily remove the dust stuck in the mesh. That is, the pressure of the sewage flowing into the strainer causes the dirt to become firmly stuck in the mesh, so that it cannot be removed unless it is pulled from the inside of the strainer or pushed from the outside.
It takes a considerable amount of time to remove this tedious garbage,
Moreover, it is impossible to completely remove it. For this reason, the strainer not only becomes clogged and the flow of sewage etc. becomes poor, but also odors, dirt, broken mud, etc. are not good for hygiene, and are a factor that worsens the working environment.

Therefore, an object of the present invention is to provide a strainer that can easily and reliably dispose of collected dust.

(Means for Solving the Problem) The present invention consists of a strainer container in which the mouth ring and the bottom plate are connected by a large number of vertical ribs, and each vertical rib is connected to the inner peripheral edge of the mouth ring. This strainer for a dust removal manhole is characterized by projecting inside the container and having a radius of an inscribed circle where a dust collection bag freely inserted into and removed from the strainer container comes into contact with the vertical ribs smaller than the inner diameter of the mouth ring.

(Function) According to the above means, even if dust accumulates in the dust collection bag and becomes loose, the dust collection bag is supported from the outside by the vertical ribs of the strainer container and does not protrude outside the strainer container. In addition, since the dust collection bag is supported by the vertical ribs with an inscribed circle radius smaller than the inner diameter of the mouth ring, even if the dust protrudes through the mesh of the dust collection bag, the dust collection bag can be moved into the strainer container. When the device is removed from the machine, there are no problems with removal, such as dust getting entangled in the mouth ring.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 shows an example in which the strainer A is used in a manhole 1, and as shown in FIG. 2, the strainer A is composed of a strainer container 2 and a dust collection bag 3 that is removably inserted into the strainer container 2. Strainer container 2
The bottom plate 21 is arranged in parallel as shown in FIG.
A large number (16 ribs in this embodiment) of flat plate-like vertical ribs 23 are installed between each peripheral edge of the mouth ring 22 at predetermined intervals and arranged radially. The inscribed circle between the dust collection bag 3 and the vertical ribs 23 is increased by making each vertical rib 23 have a slightly larger diameter, and by slanting the upper part of each vertical rib 23 outward so that it touches the inner peripheral edge of the mouth ring and standing upright. The radius is smaller than the inner diameter of the mouth ring 22.

The dust collection bag 3 is a mesh bag made of an inexpensive flexible material, such as soft fibers or thin wire, in order to be disposable.
The bag has an opening at the top corresponding to the shape of the strainer container 2. A hanging rope 4 for removal and attachment is tied to the upper end.

The strainer configured as described above is constructed by installing the dust collection bag 3 into the strainer container 2 as shown by the dashed line in FIG. 2, and then lowering it into the manhole 1 as shown in FIG. Directly below the inlet 12 which is the connection part with the mouth ring 2
2 is engaged with the flange 11 and fixed. Therefore, the sewage that has flowed into the manhole 1 from the sewage pipe 5 falls into the dust collection bag 3, leaves the contained dust in the dust collection bag 3, flows down between the vertical ribs 23 of the strainer container 2, and flows down into the manhole 1. from there to the drain pipe 6 on the outflow side.

When dust accumulates inside the bag body 3, a force is generated that tries to deform the dust collection bag 3 made of flexible material and expand it outward. Since the dust collection bag 3 is held by the vertical ribs 23 of
does not protrude from the strainer container 2, and when the inside of the dust collection bag 3 is full of dust and it is taken out from the strainer container 2 by the hanging rope 4, it can be smoothly carried out without getting caught in the strainer container 2. In addition, even if a part of the collected dust protrudes from the dust collection bag 3, the inner diameter of the opening ring 22 through which the dust collection bag 3 passes when taken out is large, and the outer diameter of the dust collection bag 3, that is, the dust collection bag Since the radius of the inscribed circle of the vertical rib 23 that supports 3 is small and there is a gap between the two,
There is no risk that the dust protruding upward will come into contact with or become entangled with the mouth ring 22 when the dust collection bag is taken out, making it difficult to take out, or that the dust will become entangled with the mouth ring 22 and remain. Then, by discarding the dust collection bag 3 together with the dust inside and loading a new dust collection bag 3 into the strainer container 2, there is no need to remove the dust from the mesh.
As a result, the garbage passing through the manhole 1 can be completely removed.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various embodiments can be considered without departing from the scope of the claims. table 13
The turntable 13 is configured to be rotated by a rotating shaft 14, and a plurality of strainer fitting holes 15 are formed around the rotating shaft 14 of the turntable 13, and the above-mentioned strainer fitting holes 15 are formed in these holes. It is also possible to attach the strainer A and rotate the turntable 13 every time the strainer A located directly below the inlet 12 is full of dust, so that the next empty strainer A is placed directly below the inlet 12. Conceivable.

(Effects) As detailed above, the present invention consists of a strainer consisting of a dust collection bag and a strainer container, and the dust collection bag is strongly held by the strainer container, so that the dust collection bag can be made of inexpensive material. By forming and disposing of the bag and throwing away the dust together with the dust collection bag, the complicated dust removal work that was conventionally necessary can be eliminated. Therefore, the sanitary environment for dust removal work at the location where the strainer is installed is improved.

In particular, in the present invention, the dust collection bag is supported by the vertical ribs with an inscribed circle radius smaller than the inner diameter of the mouth ring of the strainer container, so the dust collection bag can be easily removed.
In addition, the dust protruding from the dust collection bag does not hit the mouth ring and become an obstacle to extraction, nor does it get entangled with the mouth ring and remain on the strainer container side, improving dust removal work and ensuring accurate dust removal. can be expected.

[Brief explanation of the drawing]

The drawing shows an embodiment of the strainer of the present invention,
Figure 1 is a vertical cross-sectional view when applied to a manhole.
FIG. 2 is an exploded longitudinal sectional view, FIG. 3 is a plan view of the holding frame, and FIG. 4 is a longitudinal sectional view showing another example of use. 2... Strainer container, 3... Dust collection bag, 21...
...Bottom plate, 22...Mouth ring, 23...Vertical rib.

Claims (1)

[Scope of utility model registration request] The strainer container is constructed by connecting the mouth ring and the bottom plate with a large number of vertical ribs, and each of the vertical ribs is made to protrude further inside the container than the inner peripheral edge of the mouth ring, so that the inner diameter of the mouth ring A strainer for dust removal manholes in which the radius of the inscribed circle where the dust collection bag, which is freely inserted and removed in the strainer container, contacts the vertical ribs, is made smaller.