JPS6313780Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a filtering device, and more specifically to a device for removing dust from plastic containers and the like floating in seawater when seawater is taken in as industrial water.

In conventional filtration devices, an endless mesh member called a traveling screen is driven to travel at an angle with the flow path that takes in seawater, etc. to continuously transport seawater. It collects dust present in seawater. In such a filtration device, in the prior art, in order to remove the dust collected on the overuse net member from the overuse net member, backwashing is performed by spraying cleaning water from inside the overuse net member. is being carried out. However, in such prior art, the nozzle for spraying the cleaning water only sprays the cleaning water in the direction perpendicular to the net stretched in the overuse net member. In the corners, the collected debris remains attached, and therefore, in the downstream side of the overuse net member in the flow path, the debris left in the intake water flows out and is not completely removed. The disadvantage is that dust removal cannot be achieved.

The object of the present invention is to solve the above-mentioned technical problems and provide a filtration device that can almost completely remove dust.

In the present invention, an excess net member 7, which is made up of a net 17 stretched over a rectangular opening formed in a frame 16, is driven to run at an angle with respect to the liquid flow from which dust is to be removed. In the cleaning device that injects the cleaning liquid from a plurality of nozzles toward the net 17 at a position above the liquid flow, the plurality of nozzles 29, 27, and 28 are arranged in the running drive direction corresponding to the openings. The nozzles 29, 27, and 28 are arranged in a straight line in the width direction perpendicular to the nozzle 19, forming a nozzle group, and each nozzle 29, 27, 28 has a flow passage 36 having a linear axis, and the tip of the flow passage 36 has an injection hole. 33, and injection guides 34, 40, 45 fixed to the injection hole 33 side, and the injection guides 34, 40, 45 are arranged in the direction approaching the net 17. Flat plates 37, 42, 46 that widen at the end and slope downward toward the front at an angle with the axis of the injection hole 33, and a pair of side plates 38 that hang down and are fixed to both ends of the flat plates 37, 42, 46. ,39;43,44;4
7, 48, and the mutual center line A of the side plates 38, 39 of the injection guide 34 provided in the nozzle 29 facing toward the center of the net 17 is perpendicular to the net 17; Nozzle 27,2 facing
The side plates 43, 44 of the injection guides 40, 45 provided in 8; 47, 48 mutual center lines B, C are
The cross section is characterized in that it is inclined outward in the width direction.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of one embodiment of the present invention, and FIG. 2 is a sectional view taken along the section line - in FIG. 1. The filtering device 1 includes a collecting means 2 for collecting dust such as plastic containers floating in seawater, and a collecting means 2 provided within the collecting means 2.
The collecting means 2 is composed of a cleaning means 3 for backwashing the dust collected by the cleaning means 3, and a cover 4 covering the collecting means 2. The collection means 2 is erected facing a waterway 5 for taking in seawater and the like. The cover 4 is provided with a hopper 6 for taking out the dust removed from the collection means 2 by the cleaning means 3 to the outside of the filtering device 1.
will be provided.

3 is an enlarged sectional view of the portion indicated by the arrow mark - in FIG. 2, and FIG. 4 is a view taken from the arrow mark shown in FIG. 3. The collecting means 2 is composed of a band-like body 8 formed by endlessly connecting a plurality of waste net members 7, and a pair of sprocket wheels 9, 10 for driving the band-like body 8 around it. The overuse net member 7 includes parallel parts 11a and 11b, and the parallel part 1
A plurality of ribs 12, 13 connecting 1a, 11b,
Frame 16 consisting of 14 and 15, and its frame 1
It consists of a mesh 17 stretched over each rectangular opening formed by 6. So-called offset type roller chains 18a, 18b are fixed to ribs 12, 15 at both ends of the frame 16 in the longitudinal direction, respectively. Overuse net member 7 is this roller chain 1
8a and 18b, they are connected to each other so as to be able to swing freely, thereby achieving the formation of the band-like body 8. In the over-use mesh member 7, the mesh 17 is formed by, for example, weaving stainless steel wire, and the mesh size is selected to be, for example, 9 mm.

Among the sprocket wheels 9 and 10, one of the sprocket wheels 10 is rotatably supported at the bottom of the water channel 5, and the other sprocket foil 9 is located above the sprocket foil 10 and outward of the water channel 5. It is rotatably supported. Either one of these sprocket wheels 9, 10 is rotationally driven by a drive device such as a motor (not shown). Roller chains 18a, 18b of the strip 8 are wound around these sprocket foils 9, 10, and the overuse net member 7 is driven to run at an angle to the water stream from which dirt is to be removed in the water channel 5.

The cleaning means 3 is installed above the water channel 5, and interconnects a pair of upper and lower water sprinkling pipes 20, 21 extending in the width direction 19 perpendicular to the driving direction of the overuse net member 7. Connecting pipe 2
2, 23, and a supply pipe 24 to which one end of the connecting pipes 22, 23 are connected. The other ends of the connecting pipes 22 and 23 are sealed, and the supply pipe 2
One end of 4 is also sealed. The other end of the supply pipe 24 is connected to a pump (not shown), and, for example, seawater after removing dust is pumped as cleaning water.

FIG. 5 is a sectional view taken along the section line - in FIG. 3. The watering pipe 20 includes a pipe body 25,
The nozzle group 26 is arranged in a straight line in the longitudinal direction of the pipe body 25. These injection nozzle groups 26 correspond to each of the nets 17 stretched in the overuse net member 7. The cleaning water injected from each injection nozzle group 26 is
It is injected from inside to outside of the passing net member 7 toward the upstream side of the screen. In the injection nozzle group 26, the cleaning water ejection direction of the injection nozzles 27 and 28 arranged at both ends thereof is in the width direction 19 perpendicular to the running direction of the overused net member 7 with respect to the direction perpendicular to each net 17.
slanted outwards. Injection nozzles 27, 28
The cleaning water jet direction of the jet nozzle 29 disposed between the meshes 17 and 17 is perpendicular to the mesh 17. The water sprinkling pipe 21 is also formed from a pipe body 30 and a group of injection nozzles 31 in the same way as the water sprinkling pipe 20.

FIG. 6 is a plan view of an embodiment of the injection nozzle 29 according to the present invention, and FIG. 7 is a sectional view taken along the section line - in FIG. FIG. 10 is a perspective view of the injection nozzle 29. The injection nozzle 29 includes a cylindrical nozzle body 32 and an injection guide 34 fixed to the injection hole 33 side of the nozzle body 32. The pipe body 2 is attached to the outer periphery of the nozzle body 32.
5, 30 are formed with threaded portions 35 for screwing the injection nozzle 29 thereon. Further, in the nozzle body 32, the flow path 36 through which the cleaning water flows is connected to the injection hole 33.
If you turn it to the side, it will form. The injection guide 34 is
A flat plate 37 that widens toward the net 17
and a pair of side plates 38 and 39 that are erected at both ends of the flat plate 37 in the adjoining direction. The center line A connecting the side plates 38 and 39 is in the width direction 1 of the mesh 17.
9 is erected on a flat plate 37. Further, the flat plate 37 is fixed above the injection hole 33 of the nozzle body 32 so as to form an angle with the axis of the injection hole 33 and tilt downward.

FIG. 8 is a plan view of an embodiment of the injection nozzle 27 according to the present invention, and FIG. 9 is a plan view of an embodiment of the injection nozzle 28 according to the invention. In FIGS. 8 and 9, parts corresponding to those in FIG. 6 are given the same reference numerals. Figure 11 shows the injection nozzle 27 in Figure 8.
FIG. 12 is a perspective view of the injection nozzle 28 of FIG. 9. The injection nozzle 27 is formed from a nozzle body 32 and an injection guide 40 in the same way as the injection nozzle 29. What should be noted about the injection nozzle 27 is that the pair of side plates 43 and 44 erected on the flat plate 42 of the injection guide 40 have a center line B connecting the side plates 43 and 44 aligned with the width direction 19 of the mesh 17. It is directed toward one end 17a of the. Further, the injection nozzle 28 is also the injection nozzle 2.
9, the nozzle body 32 and the injection guide 4
5. What should be noted about this injection nozzle 28 is that the pair of side plates 47 and 48 erected on the flat plate 46 of the injection guide 45 has a center line C connecting the side plates 47 and 48 in the width direction of the mesh 17. 19 is directed toward the other end 17b.

In the filter device 1 formed as described above, the waste present in the seawater taken in through the waterway 5 is collected by the waste net member 7 of the collection means 2. Overused net member 7 with collected dust
is driven to run and is backwashed by the cleaning means 3 above the waterway 5, whereby the dust is separated from the waste net member 7 and discharged into the hopper 6 together with the cleaning water. When cleaning the overused net member 7, the dust collected at the corners of the net 17, that is, at both ends 17a and 17b of the net 17 along the width direction 20, is cleaned by water jetted from the jet nozzles 27 and 28. Therefore, it is almost completely separated from the network 17. This prevents dust from remaining on the net 17 after cleaning the overused net member 7.

As described above, according to the present invention, it is possible to prevent dust from remaining on the net stretched over the overused net member after washing the overused net member, so that the remaining dust can be removed on the downstream side of the waterway. Dust does not flow out, and dust present in intake water such as seawater can be almost completely removed.

In particular, according to the present invention, each nozzle 29, 27, 2
8 is a nozzle main body 32 and injection guides 34, 40, 4
The flat plates 37, 42, 46, which are included in the injection guides 34, 40, 45, form an angle with the axis of the injection hole 33 and emit the liquid downward as they move toward the front. It is ensured that the cleaning liquid contacts the lower surfaces of the flat plates 37, 42, and 46 and spreads in the width direction.

The cleaning liquid from the injection hole 33 flows through the side plates 38, 39;
43, 44; 47, 48 define the extent in the width direction, and backwashing can be reliably performed over the desired range.

Since the injection guides 34, 40, and 45 are open downward, there is no risk of foreign matter clogging the injection holes 33, and the injection holes 33 can be used for a long period of time without clogging. and
Easy maintenance.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of one embodiment of the present invention, Fig. 2 is a sectional view taken from the cutting plane line - of Fig. 1, and Fig. 3 is a sectional view of an embodiment of the present invention.
The figure is an enlarged cross-sectional view of the part indicated by the arrow - in Fig. 2, Fig. 4 is a view taken from the arrow shown in Fig. 3, and Fig. 5 is a view taken from the section line - in Fig. 3. 6 is a plan view of an embodiment of the injection nozzle 29 according to the present invention, and FIG. 7 is a cross-sectional view of FIG.
8 is a plan view of one embodiment of the injection nozzle 27 according to the present invention, FIG. 9 is a plan view of one embodiment of the injection nozzle 28 according to the present invention, and FIG.
11 is a perspective view of the injection nozzle 27 of FIG. 8, and FIG. 12 is a perspective view of the injection nozzle 28 of FIG. 9. DESCRIPTION OF SYMBOLS 1... Passing device, 5... Channel, 7... Passing net member, 16... Frame, 17... Net, 19... Width direction, 26... Injection nozzle group, 27, 28, 29
...Injection nozzle.

Claims (1)

[Claims for Utility Model Registration] A mesh 17 is provided in the rectangular opening formed in the frame 16.
The overuse net member 7, which is made up of a stretched net 7, is driven to travel at an angle to the liquid flow from which dust is to be removed, and the net 1 is sprayed from a plurality of nozzles at a position above the liquid flow.
7, the plurality of nozzles 29, 27, 28 are arranged in a straight line in a width direction perpendicular to the running drive direction 19, corresponding to the opening. The nozzles 29, 27, and 28 constituting the nozzle group include: a nozzle body 32 having a flow passage 36 having a linear axis, and the tip of the flow passage 36 serving as an injection hole 33; includes injection guides 34 , 40 , 45 fixed to the injection hole 33 side, and the injection guides 34 , 40 , 45 widen toward the net 17 and form an angle with the axis of the injection hole 33 . flat plates 37, 42, 46 that are inclined downward; and a pair of side plates 38, 39; 43, 44; 4 that are suspended and fixed to both ends of the flat plates 37, 42, 46;
7, 48, and the mutual center line A of the side plates 38, 39 of the injection guide 34 provided in the nozzle 29 facing toward the center of the net 17 is perpendicular to the net 17; Nozzle 27,2 facing
The side plates 43, 44 of the injection guides 40, 45 provided in 8; 47, 48 mutual center lines B, C are
The cross section is characterized in that the cross section is inclined outward in the width direction.