JPH0355622Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dust remover that removes dust from seawater and the like.

[Prior Art] Seawater is often used as cooling water for condensers in nuclear power plants and thermal power plants. A configuration is mainly adopted in which a rotating bar screen 6 and a traveling screen 7 are installed as a dust remover, and the rotating bar screen 6 removes large dust and jellyfish, and the traveling screen 7 removes small dust. In Figure 9, 1 is the revetment wall, and 2 is the waterway bottom.
The intake channel 5 is formed by the side wall 3 and the side wall 3 . 4 is a concrete ceiling wall that forms the cover of the waterway;
Trash pits 8 and 9 are provided for storing the debris collected by the rotating bar screen 6 and the traveling screen 7. 10 is a control panel.

In this type of rotary bar screen 6 that has been conventionally used, a large number of screens are connected endlessly and rotated endlessly. This screen is
It consists of a frame with many bars attached to it. In addition, a shelf board (first
(corresponding to the reference numeral 72A in the figure) protrudes, and most of the collected garbage is placed on this shelf board 72A, pulled up from the water, and dropped into the trash pit 8. Furthermore, in the traveling screen, a net is used instead of the bars of the rotating bar screen.

[Problems to be solved by the invention] In conventional dust removers, the main components such as the screen are made of steel, but corrosion tends to occur when the dust remover is immersed in seawater or the like. Traditionally, countermeasures against this corrosion include attaching sacrificial anodes such as aluminum or applying anti-corrosion coatings, but they are not always durable enough and are usually applied once a year. Perform partial painting, 2
It is necessary to repaint the entire surface about once a year. In order to perform this painting, the dust remover had to be lifted to the ground each time, making the work large-scale and complicated.

Furthermore, because the main components of conventional dust removers, such as screens, are made of steel, a great deal of time is spent on welding and correcting distortions caused by welding. Moreover, the weight is large, and the power cost for driving it is also large.

[Means for Solving the Problems] The present invention provides a dust remover that is equipped with a screen that is endlessly connected and rotated endlessly by a drive device, and that the screen has a bar or a net attached to a frame. , the frame consists of an upper beam, a lower beam, and a pair of side beams made of glass fiber-reinforced plastic, connected by inserting and bolting, and both ends of the upper beam are sealed with reinforcing pieces. The reinforcing piece is installed at the end of the upper beam to resist the fastening force of the bolt, and the lower beam is integrally provided with a shelf plate for receiving collected dust. The bolt is characterized in that both exposed ends of the bolt are covered with a sealant material.

[Function] In the dust remover of the present invention, since at least the frame of the screen, which was conventionally made of steel, is made of FRP, it is lightweight and has good corrosion resistance.Furthermore, the constituent members of the frame can be connected by inserting and bolting. Therefore, it is possible to eliminate the need for welding work and correction of distortion due to welding when assembling the screen. Also, since it is made of FRP, the precision of the frame is high.

In the dust remover of the present invention, the upper beam is hollow and both ends are sealed with reinforcing pieces, making it difficult for water to enter the upper beam and making the frame lighter.

In addition, in the dust remover of this invention, this reinforcing piece is installed inside the end of the beam, and the bolt is passed through this reinforcing piece, so even if the bolt is strongly tightened, the beam does not deform and is strong. It can be a connected structure.

Furthermore, in the dust remover of the present invention, shelf boards of different sizes can be easily attached by replacing the lower beam.

In addition, in the dust remover of the present invention, the exposed ends of the bolts are coated with a sealant material, which prevents corrosion of the bolts and also prevents the bolts from loosening.

[Example] Examples will be described below with reference to the drawings.

Fig. 1 is an assembled perspective view of a bar screen (bar frame) used in a rotating bar screen according to an embodiment of the present invention, Fig. 2 is a sectional view thereof, Fig. 3 is a front view of the rotating bar screen, and Fig. 4 is a sectional view taken along the - line in Fig. 3, Fig. 5 is a side view of the same bar screen, Fig. 6 is a sectional view taken along the - line in Fig. 3, and Fig. 7 is an enlarged view of the portion shown in Fig. 3. , FIG. 8 is a sectional view of the member connecting portion.

Reference numeral 40 denotes a main frame, and a head shaft 43 and a tail shaft 44 are pivotally supported at the upper and lower parts of the main frame via head bearings 41 and lower bearings 42, respectively. Reference numeral 45 is a driving electric motor, which transmits rotational force to the head shaft 43 via a chain wheel 46, a roller chain 47, and a chain wheel 48.
Reference numeral 49 is a splash housing, and 50 is a motor housing. Further, 51 is a check door for inspection.

A head sprocket 52 and a tail sprocket 53 are fixed to the head shaft 43 and tail shaft 44, respectively, and a carrying chain 54 is inserted between them.
is suspended endlessly. Further, as shown in FIG. 8, a torque tube 55 is fixed to the head shaft 43, and a fin 56 is provided protruding from the circumferential surface of the torque tube 55. As shown in FIG. 6, the fins 56 fit between the bars 57,
It functions to push out the dust stuck between the bars 57. Reference numeral 58 in FIG. 6 is a sprocket liner, 5
9 is a bar frame.

As shown in FIG. 4, a groove 3a is formed in the concrete side wall, and a guide 3b is attached to the groove 3a. A mounting portion 60 fixed to the main frame 40 so as to protrude laterally is inserted into this guide 3b,
It is locked to the side surface of the guide 3b. Further, an auxiliary rack 62 is connected to the main rack 40. code 6
Reference numeral 3a denotes a support material for the guide rail for the carrying chain, which is a one-piece molded product, and is attached to the auxiliary rack 62 by laminating glass mat (not shown).
A flange portion 63b is integrally provided on the support member 63a, and a carrying chain guide rail 63 is attached to the bolt 63 on the flange portion 63b.
It is fixed at c. Carrying chain 54
is the auxiliary rack 6 with the bar frame 59 connected.
2. Proceed between the guide rails 63. In addition, the code|symbol 40A shows a truss material. This truss material 40A
is connected to the main frame 40 via a joint member 40B. The code 40C connects the joint member 40B to the main frame 40.
Shows the bolts that are fastened to.

1 and 2 are an assembled perspective view and a cross-sectional view (corresponding to the part along the - line in FIG. 1) showing the structure of the bar frame 59, and there are an upper beam 71 and a lower beam 72 at the upper and lower parts, respectively. Side beams 73 are provided on both sides, thereby forming a rectangular frame. The upper beam 71 has a substantially semicircular hollow beam shape, and the upper beam 71 and the lower beam 72 each have a flat band-shaped bar attachment portion 7 extending in the longitudinal direction.
1a and 72a are integrally formed. The side beam 73 has a U-shape in plan view, and the upper beam 71 and the lower beam 72 are sandwiched inside the U-shape and fixed with bolts 73A. Reference numeral 74 is a side plate.

Note that reinforcing pieces 71B and 72B are inserted from openings at both ends of the upper beam 71 and the lower beam 72. These reinforcing pieces are for preventing the upper beam 71 and lower beam 72 from being deformed when the bolt 73A is tightened, and by tightening the bolt 73A with the reinforcing piece interposed, these beams are 71,7
2 and the side beam 73 becomes extremely strong.

Further, when the bolt 73A is tightened, the bar attachment portions 71a and 72a do not warp or warp, and the bar 57 is attached to the bar attachment portion 73A.
1a, 72a. Further, the shelf board 72A section does not suffer from distortion or warping, and the flange section 74b of the side plate 74 and the shelf board 72A are free from distortion or warping.
There is no distortion at the bolt hole position A, and the joining is performed smoothly. In addition, the upper beam 71
The reinforcing pieces 71B and 71D inserted into the openings on both sides are both solid, making it difficult for water to enter the inside of the upper beam 71, and requiring less driving power for the bar frame 59.

Further, a large number of bars 57 arranged in parallel are connected to tie bolts 75, tie nuts 75a, and spacers 77.
They are inserted into a beam body surrounded by a side beam 73 and upper and lower beams 71 and 72. The tie nut 76 has a bolt part 76a projecting in a T-shape, and this bolt part 76a is inserted into the holes 71b and 72b of the bar attachment parts 71a and 72a, and the nuts 71c and 72c are tightened, thereby tightening each bolt part 76a. A connecting body of the bar 57 is fixed to the frame. Note that both upper and lower ends of the intermediate beam 79 are fixed to the mounting portions 71a and 72a with bolts.

A bolt insertion hole 73a is formed in the side beam 73, and the carrying chain 54 (FIG. 4) is attached to the side beam 73 with a bolt 73b. The side plate 74 has integrally formed flanges 74a, 74.
b, the flange 74a is attached to the side beam 73 with bolts, and the lower frame 72
A shelf board 72A extending forward is integrally provided at the front end, and the flange 74b is connected to the shelf board 72A with bolts.

The screen configured in this manner is guided by the carrying chain 54 and rotated endlessly from the front side to the rear side of the main frame 40, and dust is collected by the bar 57.

Therefore, among the above-mentioned constituent members, the main frame 40,
Auxiliary rack 62, guide rail 63, guide rail support material 63a (including flange portion 63b), bar frame 59, bar 57, fin 56, housing 4
9. The check door 51 is made of FRP, and the lower bearing 42 is made of phenol resin. The bar frame 59 also includes an upper beam 71 (including the attachment part 71a), a lower beam 72 (including the attachment part 72a and the shelf board 72A), a side beam 73, a side plate 74 (including the flanges 74a and 74b), and the like. It is said to be made of FRP. Therefore, each member is lightweight, highly precise, and highly corrosion resistant. In addition, since the connection is made using bolts and insertion, the connection is strong and no welding is required, making manufacturing easy. Furthermore, when increasing the capacity of the screen, a large shelf board 72A can be used as the lower beam 72.
It is also possible to replace it with one that has it, which is extremely simple.

As shown in FIG. 8, when bolting the above FRP members (generally referred to as 85), metal bolts 83 and nuts 84 are screwed together, and a sealant such as silicone is applied to cover them. It is covered with material 86. Reference numeral 87 in FIG. 8 is a washer, which is made of metal or FRP.

In addition, when the reinforcing pieces 71B are provided so as to seal both ends of the upper beam 71 as in the above embodiment, there is an effect that water is less likely to enter the upper frame and the frame becomes lighter.

In the present invention, a composite of high-strength synthetic resin and reinforcing fibers such as glass fibers is preferably used as the FRP material. As the resin, various thermosetting synthetic resins such as phenol resin, urea resin, melamine resin, and polyester resin are suitable, but other resins may also be used. In the present invention, insertion and bolt tightening are used to join FRP members together, but adhesives may also be used in places where disassembly is not required.

Although the above embodiment relates to a rotating bar screen,
It can also be used as a traveling screen by attaching a net (made of resin, stainless steel, etc.) to the frame instead of the bar.

[Effects] As detailed above, in the present invention, the screen frame to be immersed in water is made of glass fiber reinforced plastic, so it is lightweight and highly corrosion resistant. In addition, since the FRP members are joined by bolting and insertion, the joint is strong, and welding work and correction of distortion due to welding are omitted, resulting in high precision and high work safety. Become. Furthermore, it is extremely easy to increase the dust collection ability.

In the dust remover of the present invention, the upper beam is hollow and has a structure that prevents water from entering the upper beam, so the frame is lightweight and the dust remover requires less power to operate.

In addition, in the dust remover of the present invention, a reinforcing piece is installed inside the end of the beam, and the bolt is passed through this reinforcing piece, so even if the bolt is strongly tightened, the beam will not deform and a strong connection will be achieved. Can be a structure.

Furthermore, with the dust remover of the present invention, shelf boards of different sizes can be easily attached.

In addition, in the dust remover of the present invention, the exposed ends of the bolts are coated with a sealant material, which prevents corrosion of the bolts and also prevents the bolts from loosening.

[Brief explanation of the drawing]

Figure 1 is an assembled perspective view of the screen (bar frame).
Fig. 2 is a sectional view of the screen (bar frame), Fig. 3 is a front view showing the frame structure of the rotating bar screen, Fig. 4 is a sectional view taken along the - line in Fig. 3, and Fig. 5 is the Fig. 3 6 is a sectional view along the line of FIG. 3, FIG. 7 is a partially enlarged view of FIG. 3,
FIG. 8 is a cross-sectional view showing the configuration of a joint portion between FRP members. FIG. 9 is a sectional view showing the water intake configuration of the power plant. 1... Seawall, 2... Channel bottom, 5... Intake channel,
6... Rotating bar screen, 7... Traveling screen, 40... Main frame, 48... Chain wheel, 52... Head sprocket, 53... Tail sprocket, 59... Screen (bar frame),
71... Upper beam, 72... Lower beam, 71a, 72
a... Attachment part, 72A... Shelf board, 71B, 7
1D, 72B...Reinforcement piece.

Claims (1)

[Claims for Utility Model Registration] A dust remover comprising a screen connected endlessly and rotated endlessly by a drive device, the screen having a bar or a net attached to a frame, each of which An upper beam, a lower beam, and a pair of side beams made of glass fiber reinforced plastic are connected by inserting and bolting, and the upper beam is a hollow beam with both ends sealed with reinforcing pieces. A reinforcing piece is installed at the end of the upper beam to resist the fastening force of the bolt, and the lower beam is integrally provided with a shelf board for receiving collected dust, and both ends of the bolt are exposed. A dust remover characterized in that part of the dust remover is covered with a sealant material.