JPH0370526B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an improvement in a strainer for removing slag from a fluid.

BACKGROUND TECHNOLOGY A conventional strainer has a cylindrical net provided within the strainer body so that one end that opens to the inlet of the strainer body communicates with the outlet of the strainer body, and a porous side wall communicates with the outlet of the strainer body. The other open end of the strainer is closed with a lid attached to the strainer body. The fluid mixed with slag from welding debris, bolts, etc. enters the net through the inlet, and after the slag is removed, it flows through the porous side wall of the net to the outlet. . However, with such a strainer, excessive flow occurs within the net, and the slag hits the inner wall of the net and the lid one after another, and as the slag moves around repeatedly within the net, the parts of the lid that are frequently hit by the slag are damaged. However, there may be holes in the lid. Furthermore, noise is generated when the slag hits the net and the lid, and the movement of the slag breaks soft dirt into small pieces and causes the inconvenience of flowing out from the mesh of the net. Since the slag flows back into the fluid, it is difficult to remove the slag using a strainer.

Problems to be Solved by the Invention An object of the present invention is to solve the above-mentioned drawbacks of the conventional strainer, so that the lid body attached to the strainer body is not damaged by slag, and the slag is reliably collected in one place. without being sent to the Internet and moving around the Internet.
Therefore, the inconvenience of soft waste being broken up into small pieces and flowing to the outlet is not caused, and the generation of noise can be prevented.
To provide a strainer that can be used for vertically rising piping and has a simple structure.

Means for Solving the Problems This invention provides a cylindrical net with openings at both ends, in which one end of the opening communicates with the inflow port, the other end of the opening is closed with a lid attached to the strainer body, and the cylindrical net is opened at both ends. In a strainer whose side wall communicates with an outlet, a perforated flat plate having a slag intake at an eccentric position is installed in the cylindrical net so that the slag intake is inclined so that the slag intake is close to the lid, and the cylindrical net is The structure is characterized in that a slag storage chamber is formed at the other end of the opening.

Function The fluid mixed with slag flows from the inlet of the strainer body to one end of the opening of the cylindrical net, the slag is removed within this cylindrical net, and the fluid flows through the holes in the side wall of the net to the outlet of the strainer body. .
At that time, the removed slag is transferred from the slag intake port of the perforated flat plate installed in the cylindrical net to the slag storage formed by the lid attached to the strainer body, the side wall of the cylindrical net, and the perforated flat plate. It moves to a room and is stored inside. This prevents the slag from moving around, thereby preventing noise and damage to the lid.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail based on the drawings. In Fig. 1, 1 is a strainer main body, and an inlet 2a and an outlet 2 are arranged in the same axial direction.
b is formed, and a net insertion port 2c is provided below the outlet 2b side. 3 is a cylindrical net having one opening end communicating with the inlet 2a, the side wall thereof facing the outlet 2b, and a mesh detachably attached to the strainer body 1; 5 is a cylindrical net; This is a lid body that is attached to the net insertion opening 2c of the strainer main body 1 so as to close the other end of the opening of the strainer body 1.

The strainer body 1 is formed with a net attachment part 1a that projects obliquely toward the lower part of the outlet 2b side, and a net insertion opening 2c is provided at the end of the net attachment part 1a. A net receiving part 18 having a hole 19 and a stepped part that fits into one end of the opening of the net 3 is provided inside. Further, each of the inlet 2a and outlet 2b of the strainer body 1 has screws 12a and 12a for connecting with other pipes.
12b is provided. Note that the screws 12a, 1
A flange may be formed in place of 2b, and the connection may be performed using bolts or nuts.

Next, the cylindrical net 3 will be explained in detail based on FIG. 1 and FIGS. 2A and 2B.

The cylindrical net 3 is made of a cylindrical perforated flat plate, a wire mesh, etc., and has a large number of meshes 13 on the side wall, and a protrusion 6 for preventing rotation is attached to the outside of the side wall. Inside the cylindrical net 3, a porous flat plate 4 having a substantially circular slag intake port 8 and a mesh 15 is inserted from the other open end of the net 3 to the axis of the net 3. The slag intake port 8 is inclined at an arbitrary angle and is located at an eccentric position of the net 3, and is attached so as to be close to the other end of the opening. This attachment is performed by welding or the like by bringing the flange 14 provided around the end of the perforated flat plate 4 into contact with the inner peripheral surface of the cylindrical net 3. Then, insert this cylindrical net 3 into the net attachment part 1a of the strainer body 1 through the net insertion opening 2c of the strainer body 1, and insert the opening end of the cylindrical net 3 and the net receiver provided in the net attachment part 1a. The stepped portion of the portion 18 is fitted. At this time,
The slag intake port 8 of the porous flat plate 4 in the cylindrical net 3 is located on the outlet 2b side and close to the lid 5.

Further, the protruding piece 6 attached to the cylindrical net 3 engages with a concave locking piece 7 provided in the net attachment portion 1a, thereby regulating the attachment position of the cylindrical net 3. In addition to the means for attaching the locking piece 7 as described above, this positional regulation may be performed by means of boring a groove in the inner wall of the net attachment portion 1a and engaging the protruding piece 6 with the groove.

Next, the lid 5 will be explained. The lid 5 has a threaded portion on the outside that fits with the other end of the opening of the cylindrical net 3 on the inside, and screws with the net insertion opening 2c of the net mounting portion 1a. A cylindrical portion 20 is provided, and reinforcing ribs 9 are attached to the back surface of the lid 5. Attaching the lid body 5 to the strainer body 1 is as follows:
After inserting the cylindrical net 3 into the net mounting part 1a, fit the cylindrical net 3 into the cylindrical part 20, and screw the threaded part of the cylindrical part 20 and the net insertion opening 2c together. Install it with At this time, a gasket 11 is interposed between the lid 5 and the net insertion opening 2c. As described above, since the cylindrical net 3 and the lid 5 are attached to the strainer body, the cylindrical net 3, the perforated flat plate 4, and the lid body 5 form the slag intake port 8 in the direction of the outflow port 2b, and the slag intake port 8 in the direction of the inflow port 2a. A deep slag storage chamber 3a is formed.

In addition, in attaching the lid 5, flanges may be formed on the lid 5 and the net insertion opening 2c, respectively, and the lid 5 and the net insertion opening 2c may be attached using bolts and nuts.

Next, to explain the operation of the embodiment of the present invention, fluid mixed with welding waste or slag from bolts, etc. flows into the cylindrical net 3 from the inlet 2a of the strainer body 1, and the slag is removed. Only the remaining fluid passes through the mesh 13 of the cylindrical net 3 and flows to the outlet 2b. At that time, the slag in the fluid hits the inner wall of the cylindrical net 3 and then enters the slag storage chamber 3a through the slag intake port 8 of the porous flat plate 4 in the cylindrical net 3, and enters the slag storage chamber 3a through the slag intake port 8 of the storage chamber 3a
They are accumulated in the space formed by the cylindrical net 3 and the perforated flat plate 4 on the opposite side. Therefore, the slag does not move around inside the cylindrical net 3, nor does it move around inside the slag storage chamber 3a.
This eliminates the possibility of pulverizing the soft dirt in the fluid collected in the fluid and causing it to flow out, and also prevents the noise caused by the circulation of slag.

Furthermore, even when this strainer is attached to the vertically ascending pipe, the slag is reliably collected in the slag storage chamber 3a and does not return to the inlet 2a side. When discharging slag from inside the strainer body 1, stop the fluid supply and then
This is done by removing the lid 5, taking out the cylindrical net 3 from the strainer body, and washing away the dirt collected inside the cylindrical net 3.

3A, B and 4A, B show the structures of cylindrical nets 3', 3'' in other embodiments of the present invention. ,
The shape of the porous flat plate 4' is as follows:
In order to attach the perforated flat plate 4' to the cylindrical net 3' by placing it perpendicularly to the axial direction of the cylindrical net 3' and tilting the other parts at an arbitrary angle with respect to the axial center, a slug is used. This makes it easier for the slag to enter the slag intake port 8'. Then, band plates 16 and 17 are attached to the outside of the openings at both ends of the net 3', and the cylindrical net 3'
and the net receiving part 18 of the net mounting part 1a and the lid body 5
When fitting with the cylindrical part 20 of the cylindrical net 3',
The net receiving portion 18 and the cylindrical portion 20 are brought into contact with each other and are fitted together.
The strip plates 16 and 17 can also be attached as appropriate to those shown in FIGS. 2A and 2B and 4A and 4B.

In addition, in FIGS. 4A and 4B, the shape of the perforated flat plate 4'' is made into a chevron-shaped cross section by bending the opposite side of the slag intake port 8'' toward the other end of the opening of the net 3. .

The attachment and operation of the other embodiments shown in FIGS. 3A and 3B and 4A and 4B to the strainer body 1 are also the same as those shown in FIGS. Therefore, it is omitted.

Effects of the Invention As described above, the present invention allows one end of a cylindrical net with openings at both ends to communicate with the inflow port, closes the other end of the opening with a lid attached to the strainer body, and allows the net side wall to flow through the net. In the strainer communicated with the outlet, a perforated flat plate having an eccentric slag intake is installed in the cylindrical net so that the slag intake is inclined so that the slag intake is close to the lid, and the opening of the cylindrical net is By forming a slag storage chamber at the other end, fluid mixed with slag from welding chips and bolts flows into the cylindrical net from the inlet, and only the fluid from which slag has been removed is transferred to the side wall of the cylindrical net. After hitting the inner wall of the cylindrical net, the slag enters the slag storage chamber through the slag intake port and is collected there, so the slag does not move around inside the cylindrical net and the lid is damaged. No noise is generated.

In addition, there is no problem that the soft dirt collected in the cylindrical net is finely pulverized by the slag and flows out from the outlet net, and it can also be used in vertically ascending piping. By simply moving the perforated flat plate up or down, the size of the slag storage chamber can be easily changed as required.Furthermore, since the perforated flat plate is a flat body, it is extremely easy to process and install. It has an excellent effect.

[Brief explanation of drawings]

FIG. 1 is a cutaway front view of an embodiment of the present invention;
Figure 2A is a sectional view of the cylindrical net, Figure 2B is a cross-sectional view of the cylindrical net.
The AA sectional view of Figure A, Figure 3A, and Figure 4A are
3B and 4B are cross-sectional views of the cylindrical net of different embodiments of the present invention, respectively, are A'-A' and A''-A'' cross-sectional views of FIGS. 3A and 4A. It is. 1...Strainer body, 1a...Net mounting part, 2a...Inflow port, 2b...Outflow port, 2c...
Net insertion port, 3, 3', 3''...Tubular net, 3
a, 3a', 3a''...Slag storage chamber, 4, 4',
4"...Porous flat plate, 5...Lid, 6, 6', 6"...
... Projection piece, 7 ... Locking piece, 8, 8', 8'' ... Slag intake port, 9 ... Rib, 10 ... Threaded part, 11 ...
Gasket, 12...Threaded part, 13, 13', 1
3″...mesh, 14, 14', 14″...flange, 15, 15', 15″...mesh, 16,
17... Band plate, 18... Net receiver, 19...
Hole, 20...cylindrical part.

Claims (1)

[Claims] 1. A strainer in which one end of a cylindrical net with openings at both ends communicates with an inlet, the other end of the opening is closed with a lid attached to the strainer body, and a side wall of the cylindrical net communicates with an outlet, A porous flat plate having a slag intake port at an eccentric position is installed in the cylindrical net at an angle so that the slag intake port approaches the lid, and a slag storage chamber is formed at the other end of the opening of the cylindrical net. A strainer characterized by: