JPH07122251B2 - Dust remover - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust remover for removing debris from seawater or river water, and more particularly to an improvement in a structure for reducing undusted running water before and after the dust remover.

[Prior Art] Conventionally, generally used dust removers have been widely used in industrial water canals or water canals for collecting cooling water in power plants, and the most well-known are A link chain is provided on both sides, and a bar screen or a screen made of wire mesh is erected vertically or almost perpendicularly to the flow direction for each link of this link chain, and the dust caught on the screen is rotated by rotating it. There is a structure to remove it outside the waterway.

4 to 8 show one embodiment of a conventional dust remover, FIG. 4 is an overall schematic view, and FIG. 5 is a meshing state diagram showing a meshing state of a sprocket for driving the dust remover and a link chain. FIG. 6 is a detailed vertical sectional view (a) and a front view (b) of a screen frame having a bucket portion. FIG. 7 is a front view of another embodiment showing the connection state of the link chain and the screen frame, and FIG. 8 is a side view showing an example of use of the water shield plate.

In FIG. 4, 1 is an upper sprocket wheel, 2 is a lower sprocket wheel, 3 is both sprocket wheels 1, 2
An endlessly mounted link chain, 4 is a screen frame having a bucket part attached to the link chain 3 and storing the dust trapped in the lower part, 5 is a transmission chain 6 and a chain wheel 7
A power unit for transmitting power to the upper sprocket wheel 1 via the shaft, 8 is a shaft of the upper sprocket wheel 1, 9 is a guide plate for guiding dust to the trough 10, 11 is a housing of the dust removing device, 12 is a water channel, and F arrow is shown. Indicates the direction of running water. As shown in FIG. 6, the screen frame 4 is attached at every pitch of the link chain 3, and 14 is a screen body, which is made of a wire mesh or a large number of bar-shaped rods arranged in a plow shape, and is used to remove dust and the like in running water. It is a member that both blocks and scoops up this. Reference numeral 15 is an upper beam provided at the upper end of the screen body 14, and this upper beam 15 is made of a pipe having a diameter suitable for the width of the water channel, and its center is at the center of the roller 3b portion of the link chain 3. Is provided to be located,
Further, the screen main body 14 is integrally fixed via a mounting plate 16 protruding from the lower part thereof. Reference numeral 17 denotes a lower beam having a U-shaped cross section provided at the lower end of the screen body 14, and the lower beam 17 rotatably covers the upper portion of the upper beam 15 of the screen frame 4 adjacent to the lower portion thereof. The screen main body 14 is integrally fixed via a mounting plate 18 which is provided and abuts on the upper portion thereof. 19 is a side plate that holds the screen body 14 from its side portion.
6 has a width wider than the link width of the link chain 3 and is integrally fixed to the left and right end surfaces of the upper beam 15 and the lower beam 17, respectively, as shown in FIG. 6 (a). In other words, the side plate 19, the upper beam 15 and the lower beam 17
A frame body (screen frame 4) for holding the screen body 14 is formed by the above. And this frame body has its side plate 19
Is fixed to the link chain 3 by fixing it to the side surface of the link 3a with a bolt 20. Reference numeral 21 denotes a dust bucket projecting from the lower beam 17, and the dust bucket 21 is provided so as to obliquely cover the lower front part of the screen body 14, and its left and right ends are provided with side plates 19 via a support plate 22. Is integrally fixed to. Note that 23 is a spray pipe provided on the back of the descending screen 13, and is for ejecting spray water to the back surface of the screen 13 as shown by the chain line so as to remove the dust attached to the screen body 14. is there. Therefore, dust and the like floating in the flow are first blocked by the screen body 14, and the link chain 3
The dust bucket 21 is scooped up by the dust bucket 21, and the dust bucket 21 containing the dust is further raised, leveled at the top of the upper sprocket 1, and then inverted and lowered.

Then, the dust existing in the dust bucket 21 falls due to its gravity, is guided by the outer surface of the dust bucket 21 of the lower screen and the guide plate 9, and is discharged into the water channel 10. On the other hand, dust and the like adhering to the screen body 14 is separated by the spray water, and the trough 10 is passed through the outer surface of the dust bucket 21 of the lower screen and the guide plate 9 as described above.
Is discharged to.

The endless link chain 3 to which the screen frame 4 constructed as described above is joined is usually about 6 as shown in FIG.
It was driven by the upper sprocket wheel 1 of the tooth.
The L arrow indicates the link chain driving direction.

[Problems to be Solved by the Invention] As described above, the screen frame and the link chain that rotates the screen frame in the vertical direction are joined to each other by the roller 3b at every pitch, as shown in FIG. 6 (b). Since it is bolted to the link plate 3a of the offset type link chain 3 that holds the above, it is not desirable because there is a passage (bypass) of running water that passes through without dust removal at the portion x in the figure.

Further, as shown in FIG. 7, in a link chain of a type in which a narrow link having rollers 3b at both ends is held by a wide link from both sides, in the longitudinal direction in front of and behind the wide inner link plate. A void x is generated, and a passage (bypass) of running water that passes through without dust removal is also generated.

In order to solve the above problems, conventionally, as shown in FIG. 8, a water blocking plate 28 is sandwiched between a side plate of a screen frame and an inner link plate. Therefore, a small gap (for example, about 5 mm) was maintained to form a combination of irregularities to prevent the bypass. However, in the water shield plate of FIG. 8, when the screen frame is turned over by the upper sprocket or the lower sprocket, these water shield plates are
Easy to interfere with each other at 28 consecutive points (rotational motion of sprocket and link chain is polygonal motion of 6 teeth instead of circular motion), and there is a risk of overload and equipment damage, which is fully satisfactory. However, effective measures to prevent bypass of the side surface of the screen frame were desired.

[Means for Solving the Problems] In order to solve the above problems and to prevent bypass dust water that has not been removed as much as possible, an endless link chain is provided with an oblique screen frame provided with a screen for collecting dust. In the dust removing device which is joined to the link chain and drives the link chain through a pair of upper and lower sprocket wheels, the length of the link plate inside the width direction that joins the screen frame is formed to be substantially equal to the height of the screen frame. The link plates are wide, and both ends of the link plates are formed in an arc shape, and the link plates adjacent to each other in the vertical direction are arranged so as to be connected substantially continuously. An elastic member for water impingement is abutted in the vertical direction via a frame provided with rails for guiding the roller vertical direction of the link chain.

[Operation] In the dust remover of the present invention, the length of the link plate inside the link chain is formed to be substantially equal to the height of the screen frame, and the width of the link plate is increased, instead of using the water shield plate. Form both ends of the plate in an arc shape,
Further, the link plates adjacent to each other in the vertical direction are arranged so as to be connected almost continuously, and are shielded at right angles to the outer surface of the link plate through a frame provided with rails for guiding the roller vertical direction of the link chain. Since the elastic member for water (seal rubber) is contacted in the vertical direction, almost all running water will pass through the screen frame,
It is possible to almost shut off the bypass running water except in the screen frame.

[Examples] Examples of the present invention will be described in detail below.

1 to 3 show an embodiment of the dust removing device according to the present invention, and FIG. 1 is a longitudinal sectional view showing a connected state of a screen frame, and FIG.
FIG. 3 is a front view of the screen frame, and FIG. 3 is a plan view of FIG. 2 taken along line III-III.

In FIGS. 1 to 3, the sprocket wheels each have 6 to 12 teeth, and the link chain 3 has two types of link chain 3x and 3y alternately arranged and connected. The link plates on both sides of the link chain 3x are conventionally commercially available and have the same shape on the left and right, whereas the link plates 3y ₁ (outer side) and 3y ₂ (inner side) of the link chain 3y are not the same shape and the link plate 3y _As shown in FIG. 1, ₂ is wider than the outer link plate 3y ₁ and is longer in the vertical direction, and is formed in an arc at the upper and lower ends. The gaps between the vertically adjacent link plates 3y ₂ are connected via the link chain 3x while maintaining a gap of about 5 to 10 mm. As shown in FIGS. 1 and 2, a plurality of bolt holes (five in this embodiment) are drilled in the link chain 3y, and a required screen frame or bar frame is fixed by the bolt nut 20. Tie.

First, FIG. 1 in which the dust collecting means is a screen frame will be described in detail. The screen frame 4 is configured by connecting four members of an upper beam 15, a lower beam 17, and side plates 19 and 19 on both left and right ends, and a screen body (mesh) 14 is attached to the upper beam 15 and the lower beam 17 by mounting plates 16 respectively. Then, it is pressed against the mounting plate 18 and mounted with the bolt nut 16a (as shown in FIG. 1). Also, the screen body may be attached to both side ends by bending the end portions of the side plates 19 into an L shape and projecting them. The screen frame configured as described above is fastened to the link chain 3y ₂ having mounting holes on both left and right sides with the bolts and nuts 20 via the side plates 19. The maximum length of the screen frame in the vertical direction is approximately twice the link chain pitch, and the gap between the screen frames adjacent in the vertical direction is about 10 mm as shown in Fig. 1.
Determine the size of the screen frame so that If this gap is made too large, some of the dust in the running water that cannot be collected will come out, and if it is made too small, adjacent screen frames will interfere with each other when rotating with the sprocket wheel. Seal rubber 15a on the upper surface of the upper beam 15
It is convenient to tighten this with a bolt to further narrow this gap. Both the upper beam 15 and the lower beam 17 can be used by pressing light-gauge steel, but in particular, the oblique overhanging portion of the lower beam 17 on the side facing the running water is used as a storage place for the collected dust. Since the bucket portion 17a is formed,
As shown in the figure, the lower beam 17 is lengthened to some extent.

On the other hand, as shown in FIG. 3, the roller 3b of the link chain 3x
Rolls a guide rail 40 that is also laid in the vertical direction on a frame 30 extending in the vertical direction of the dust removing device, and the screen frame 4 moves upward. Then, a seal rubber 50 is bolted to the upstream side of the water channel of this frame at an appropriate pitch so as to abut the outer surface of the link plate 3y ₂ .

The operation of the dust removing device of the present invention configured as above will be described.

When the dust remover of the present invention is installed at the intake for taking in seawater or river water in the state shown in FIG. 4, and the link chain is driven by the power unit, the dust comes into contact with the screen body 14 in the running water to prevent drifting. When the screen frame 4 floats above the water, it is stored in the bucket portion 17a of the lower beam 17 due to the gravity of the dust itself. Thereafter, the upper sprocket 1 is meshed and rotated, and the dust accumulated in the bucket portion 17a of the lower beam of the screen frame 4 which is turned upside down slides on the guide plate and is discharged to a predetermined trough 10 and collected.

In this way, dust removal of the flowing water flowing through the water channel is carried out by the screen body 14 of the screen frame 4, but in the dust removing device of the present invention, the link plate 3y ₂ inside the link chain 3y is made wide and the dust flows vertically. The link plate 3y ₂ is extended by extending the tip into an arc and maintaining a gap of 5 to 10 mm, and the seal rubber 50 projects from the frame 30 and abuts on the outer surface of the wide link plate 3y _2. Therefore, the running water is prevented from passing through the both ends of the screen frame 4. In addition, since the front and rear connecting parts are not a combination of projections and depressions like the conventional water shield plate, but both are arc-shaped upper and lower link plates, they interfere with each other when rotating the upper and lower sprockets. The smooth pivoting motion is maintained without causing.

[Effects of the Invention] In the present invention, the length of the ring plate fastened to the side plate of the screen frame is formed to be substantially equal to the height of the screen frame, and the width is wide, and both ends of the link plate are formed in an arc shape. In addition, the link plates adjacent to each other in the vertical direction are arranged so as to be almost connected and connected to each other, and the frame is provided at right angles to the outer surface of the link plate with the rail for guiding the roller vertical direction of the link chain installed. Since the elastic member for sealing water (seal rubber) is abutted in the vertical direction, it is possible to almost eliminate running water which passes through the upstream and downstream of the water channel without passing through the dust removing device. Therefore, good quality clear water can be secured, and endless movement of the screen frame is also performed smoothly, which is excellent in maintainability, reduces vibration and noise of the dust remover, and extends the life of the equipment and improves the working environment. To be done.

[Brief description of drawings]

1 to 3 show an embodiment of the dust removing device of the present invention, FIG. 1 is a longitudinal sectional view showing a connected state of the screen frame, FIG. 2 is a front view of the screen frame, and FIG. It is a top view of FIG. 4 to 8 show a conventional embodiment,
FIG. 4 is an overall schematic diagram, FIG. 5 is a meshing state diagram of a sprocket and a link chain, FIG. 6 shows details of a screen frame, FIG. 6 (a) is a side sectional view, and FIG. 6 (b) is Front view,
FIG. 7 is a front view showing another embodiment of the connection between the link chain and the screen frame, and FIG. 8 shows an example of using the water blocking plate.
FIG. 8A is a side view, and FIG. 8B is a front view. 1 …… Upper sprocket wheel, 2 …… Lower sprocket wheel, 3,3x, 3y …… Link chain, 3y ₁ …… Link plate (outside), 3y ₂ …… Link plate (inside), 3a …… Link chain, 3b ... Roller, 4 ... Screen frame (or bar frame), 5 ... Power unit, 6 ... Transmission chain, 7 ... Chain wheel, 8 ... Upper sprocket wheel shaft, 9 ... Guide plate, 10 …… Trough, 14 …… Screen body, 15 …… Upper beam, 16 …… Mounting plate, 17 …… Lower beam, 18 …… Mounting plate, 19 …… Side plate, 20 …… Bolt nut, 28 …… Water shield Plate, 30 …… frame, 40 …… guide rail, 50 …… seal rubber.

Claims (1)

[Claims] 1. A dust remover in which a screen frame provided with a screen for collecting dust is obliquely joined to an endless link chain, and the link chain is driven through a pair of upper and lower sprocket wheels. The length of the link plate on the inner side in the width direction to be joined is formed to be substantially equal to the height of the screen frame and is wide, and both end portions of the link plate are formed in an arc shape and are adjacent to each other in the vertical direction. The comrades are arranged so as to be connected almost continuously, and at the right angle to the outer surface of the link plate, an elastic member for water impermeability is vertically moved through a frame provided with rails for guiding the roller vertical direction of the link chain. A dust remover characterized by being in contact with.