JPH06262007A - Strainer having deposit discharge mechanism - Google Patents

Abstract

PURPOSE:To provide a strainer having a deposit discharge mechanism capable of easily performing cleaning work without stopping the flow of a fluid and opening the strainer. CONSTITUTION:A deposit discharge pipe 7 is provided to the lower part of a strainer main body 10, a deposit discharge port 6 having a filter net provided to the lower part thereof is connected to the discharge pipe 7 and an opening and closing means 8 is provided to the discharge pipe 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strainer having a deposit discharging mechanism.

[0002]

2. Description of the Related Art A strainer used in a fluid pipe has a main purpose of filtering and removing sand, pebbles, dust and the like in the fluid.

FIG. 3 shows a conventional general strainer. The fluid flows into the filtration mesh (23) from the inlet (21) of the strainer body (20) forming a fluid flow path as shown by an arrow A in the figure. The filter net (23) is made of a fine net made of synthetic resin or metal, and filters out sand, pebbles, and dust in the inflowing fluid, and retains it as a deposit (30) in the filter net, leaving only the fluid. As shown by an arrow B in the figure, it is made to flow out to the outflow port (21).

[0004]

However, as described above, the strainer filters sand, pebbles, dust, etc. in the fluid,
Since the main purpose is to remove it, as described above, these dusts and the like accumulate in the strainer as deposits, causing clogging of the filter mesh in the strainer and significantly increasing the flow resistance. Therefore, it is necessary to regularly perform maintenance called removal work of this deposit.

In the case of the conventional general strainer shown in FIG. 3, this work of removing deposits is performed by first closing the upstream stop valve to stop the flow of the fluid into the inflow port (21) and then the strainer cover. (24) is removed, and the filter net (23) is pulled up through the eyebolt (25) and taken out from the main body (20). Then, the deposit (30) in the filter net (23) is removed, and then the filter net (2) is removed again.
3) was incorporated into the strainer body, the strainer cover (24) was attached, and the stop valve was opened. However, this work is very time-consuming and troublesome because the inside of the strainer is opened and the filter net is taken out for cleaning as described above, and at the same time, it is a little time-consuming and troublesome.

Further, since the work of removing the deposit is carried out by stopping the flow of the fluid as described above, when the fluid is made to flow again after the work, a sudden pressure change is applied to the pipe, so that especially the fumes are discharged. In the case of a pipe made of a weak material such as a pipe or a vinyl pipe, the pipe is often broken, which has the effect of shortening the life of the pipe and the joint of the pipe. Furthermore, since the fluid that had stopped during the cleaning work suddenly flows out after the work, the scale accumulated on the inner wall of the pipe,
Rust and the like are often mixed in the fluid, and there is a problem that the impurity content of the fluid increases immediately after the strainer cleaning operation.

The present invention solves the above problems and opens the inside of the strainer by making it possible to perform the cleaning work without stopping the flow of the fluid in the strainer which necessarily requires the cleaning work. It is an object of the present invention to provide a strainer having a deposit discharge mechanism that can perform cleaning work extremely easily without using the strainer.

[0008]

A strainer having a deposit discharge mechanism according to the present invention has a deposit discharge pipe at a lower portion of a strainer main body in which a fluid flows from an inflow port through a filtration net to an outflow port. The gist of the invention is that the upper end of the discharge pipe is connected to a deposit discharge port provided in the lower part of the filter mesh, and the deposit discharge pipe is provided with an opening / closing means.

[0009]

The present invention will be described in detail below with reference to the illustrated embodiments.

FIG. 1 shows a U-shaped strainer which is an embodiment of a strainer having a deposit discharging mechanism according to the present invention.

The strainer body (10) is formed in a substantially cylindrical shape, has an inlet (1) and an outlet (2) facing each other on the upper peripheral wall, and has a joint (1) on the lower surface side.
It has a sediment discharge pipe (7) vertically through 7). The inside of the strainer body (10) is divided by an inner wall (9) into an inflow chamber (11) on the inflow port (1) side and an outflow chamber (12) on the outflow port (2) side. 9) has a filter net insertion hole (13) vertically provided in the central portion above the sediment discharge port (6).

The filter net (3) is formed of a fine net made of synthetic resin or metal into a substantially cylindrical shape, and has a deposit discharge port (6) at its lower end, and its upper part filters the inner wall (9). It is inserted into the outflow chamber (12) in such a manner that it just fits in the mesh insertion hole (13), and the discharge port (6) at the lower end thereof.
Is inserted into the sediment discharge pipe (7) in such a manner that it is just fitted.

The deposit discharge pipe (7) has one upper end attached to the strainer body (10) via a joint (17), and the other end below the ball valve (8).
Is provided so that the pipeline can be opened and closed. The ball valve (8) is not limited to the ball valve as long as it can open and close the pipeline of the deposit discharge pipe (7).

During normal use in the strainer of the above-mentioned embodiment, the fluid flows through the inlet (1) as shown by the arrow A in the figure.
Then, it flows into the inflow chamber (11) and reaches the inside of the filtration net (3).
Further, as indicated by an arrow B in the figure, sand, pebbles, dust, etc. in the fluid are filtered from the inside of the filter net (3) through the peripheral wall of the filter net (3) to reach the outflow chamber (12), and the outlet (2). ) To.

When performing the cleaning operation, the ball valve (8) under the sediment discharge pipe (7) is released to show a part of the fluid flow as indicated by arrows C and D in the drawing. ) From the lower sediment discharge port (6) to the sediment discharge pipe (7), the flow of this fluid discharges the sand, pebbles, dust, etc. accumulated on the inner wall of the filter net (3) together with the fluid.

That is, the cleaning work in the strainer of this embodiment requires only opening the ball valve (8),
It is extremely easy to do without opening the inside of the strainer. Further, during the cleaning work, it is not necessary to completely stop the main flow indicated by the arrows A and B in the figure, and a part of the fluid flow is taken into the deposit discharge pipe (7) side indicated by the arrows C and D in the figure. Therefore, no sudden pressure change is applied to the pipes connected to the inlet (1) and the outlet (2). It is also possible to open the strainer cover (4) and take out the filter net (3) through the eyebolt (5) to perform overhaul in the same manner as a conventional strainer.

FIG. 2 shows a Y-shaped strainer which is another embodiment of the strainer having the deposit discharging mechanism according to the present invention. This is a strainer body (10) formed in a substantially cylindrical shape, which is arranged obliquely with respect to a plane on which an inlet (1) and an outlet (2) provided on the upper peripheral wall of the strainer main body face each other. Therefore, the fluid flowing from the inflow port (1) can smoothly flow into the filter mesh (3) from the inflow chamber (11) without being blocked by the inner wall (9). The other structure is the same as that of the embodiment shown in FIG.

[0018]

The greatest effect of the strainer having the deposit discharging mechanism according to the present invention is that the cleaning work can be performed significantly more easily than the conventional strainer. That is, unlike the conventional strainer, it is not necessary to stop the fluid flow to open the inside of the strainer, take out the filter net and perform this cleaning, and it is extremely easy to open the opening / closing mechanism part provided in the sediment discharge pipe. By the operation, the deposit accumulated in the filtration net can be automatically discharged by the flow of the fluid guided to the deposit discharge pipe.

Further, since it is not necessary to carry out this cleaning work by stopping the main flow of the fluid in the pipe in which the strainer is installed, no sudden pressure change is applied to the pipe before and after the strainer cleaning work, and the strainer It also contributes to the improvement of the durability of the installed piping.

Further, the strainer according to the present invention is
It is structurally very simple, it can be manufactured at low cost, and there is little risk of failure, and the cost of cleaning work required to use the strainer is significantly reduced. Considering it together, it has an extremely excellent cost performance.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a strainer having a deposit discharging mechanism according to the present invention.

FIG. 2 is a vertical sectional view of another embodiment of the strainer.

FIG. 3 is a vertical sectional view showing an example of a conventional strainer.

[Explanation of symbols]

 (1) Inlet (2) Outlet (3) Filter net (6) Sediment discharge port (7) Sediment discharge pipe (8) Opening / closing mechanism (10) Strainer body

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B01D 35/02 35/16 6953-4D 6953-4D B01D 35/02 A

Claims (1)

[Claims] 1. A strainer in which a fluid flows from an inflow port (1) through a filtration net (3) to an outflow port (2), having a sediment discharge pipe (7) below a strainer body (10), The deposit discharge pipe (7) is connected to a deposit discharge port (6) provided at the lower end of the filtration net (3), and the deposit discharge pipe (7) is provided with an opening / closing means (8). A strainer having a deposit discharge mechanism characterized by: