JP2797682B2 - High-speed dust remover - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a high-speed dust remover for removing dust from seawater or river water, and more particularly to a high-speed dust remover for increasing dust-passing area and improving dust removal efficiency. It relates to the improvement of the structure.

[Prior Art] Conventionally, in a commonly used dust remover, a water channel for taking cooling water such as an industrial water channel or a power plant is widely used. A link chain is provided on both sides, and a bar screen or a screen made of a wire mesh is erected perpendicularly or substantially perpendicularly to the flow direction for each link of the link chain, and by rotating this, dust caught on the screen is removed. Some have a structure that is removed outside the waterway.

4 to 6 show one embodiment of a conventional dust removing device,
FIG. 4 is an overall schematic view, FIG. 5 is a meshing state diagram showing a meshing state of a sprocket for driving the dust removing device and the link chain,
FIG. 6 is a detailed vertical sectional view (a) and a front view (b) of a screen frame having a bucket portion.

In FIG. 4, 1 is an upper sprocket wheel, 2 is a lower sprocket wheel, 2 is both sprocket wheels,
The link chain 2, which is endlessly mounted on 2, has a screen frame having a bucket 21 which is obliquely attached to the link chain 3 and stores dust trapped at the lower portion, and 5 is connected via the transmission chain 6 and the chain wheel 7. A power unit for transmitting power to the upper sprocket wheel 1, 8 is a shaft of the upper sprocket wheel 1, 9 is a guide plate for guiding the dust to the trough 10, 11 is a housing of the dust removing device, 12 is a flowing water channel, and F arrow is flowing water. Indicates the direction. As shown in FIG. 6, the screen frame 4 is attached at every pitch of the link chain 3, and 14 is a screen main body, which is made of a wire rod or a plurality of rods arranged in a plow shape, and which removes dust and the like in running water. It is a member that blocks and scoops it up. Reference numeral 15 denotes an upper beam provided at the upper end of the screen main body 14. The upper beam 15 is formed of a flat plate having a wide end bent in accordance with the width of the water channel, and the center thereof is the center of the roller 3b of the link chain 3. , And the screen main body 14 is integrally fixed to a lower portion thereof via a mounting plate 16. Reference numeral 17 denotes a lower beam which is provided at the lower end of the screen main body 14 and is made of a flat plate whose tip is bent. The lower beam 17 is rotatable above the upper beam 15 of the next screen frame 4 adjacent to the lower portion. The screen main body 14 is integrally fixed to the upper portion thereof via a mounting plate 18.
19 is a side plate that holds the screen body 14 from its side,
This side plate 19 is connected to the link chain 3 as shown in FIG.
, And are integrally fixed to the left and right end surfaces of the upper beam 15 and the lower beam 17, respectively. In other words, the side plate 19 and the upper beam 15 and the lower beam 17 form a frame (screen frame 4) for holding the screen main body 14. The frame is fixed to the link chain 3 by fixing the side plate 19 to the side surface of the link 3a with bolts 20. Reference numeral 21 denotes a garbage bucket portion composed of the lower beam 17 and the side plate 19. Incidentally, 23 is a spray pipe provided on the back of the descending screen 13, by spraying spray water on the back of the screen main body 14 as shown by a dashed line, to remove dust attached to the screen main body 14. Things. Therefore, dust and the like floating in the flow are first blocked by the screen main body 14 and scooped up by the dust bucket 21 with the rise of the link chain 3, and the dust bucket 21 containing the dust further rises and the upper sprocket 1 Levels at the top, then flips and descends.

Then, the garbage existing in the garbage bucket portion 21 falls due to its gravity, is guided by the outer surface of the garbage 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 main body 14 are separated by spray water and discharged to the trough 10 via the outer surface of the dust bucket portion 21 of the lower screen and the guide plate 9 as described above.

The endless link chain 3 joined with the screen frame 4 constructed as described above was normally driven by an upper sprocket wheel 1 having approximately six teeth as shown in FIG. The L arrow indicates the driving direction of the link chain.

[Problem to be Solved by the Invention] In a high-speed driven dust removing device in which the screen frame configured as described above is connected to the link chain at an angle, the screen frame rotates vertically in flowing water. Has a considerably large water flow resistance, which not only increases the power consumption of the dust removing device, but also increases the water level difference generated before and after the dust removing device. Therefore, increase the water flow area as much as possible,
It is required to improve dust removal efficiency and reduce water flow resistance.

[Means for solving the problems] In order to solve the above problems, reduce the water flow resistance as much as possible, reduce the difference between the front and rear water levels, and increase the dust removal efficiency,
In the present invention, a screen for dust collection is provided on a screen frame formed by a pair of left and right side plates joined to both ends of an upper beam, a lower beam, and both upper and lower beams, and having a U-shaped cross section. Endless link chains are diagonally joined via a link plate inside the link chains so that the upper beam upper surface descends toward the downstream side, and the link chains are driven via a pair of upper and lower sprocket wheels. A high-speed dust removing device, wherein the upper beam, the lower beam, and the both side plates are each formed of a flat plate, an opening is provided in the upper beam of the screen frame, and
The opening was covered with a screen body such as a wire mesh.

[Operation] In the high-speed dust removing apparatus of the present invention, an opening is provided in the upper beam of the screen frame, and the screen main body, such as a wire mesh, expanded metal, and a row of bars, having good water permeability and capable of collecting dust is covered therewith. In addition, the dust removal area is increased to improve the dust removal efficiency, and even if the screen frame is driven at a high speed, the water flow resistance is relatively small, and the water level difference before and after the dust removal device does not increase so much.

[Examples] Hereinafter, examples of the present invention will be described in detail.

1 to 3 show an embodiment of a high-speed dust remover according to the present invention. FIG. 1 is a longitudinal sectional view showing a connected state of a screen frame, FIG. 2 is a front view of the screen frame, and FIG. It is an important section expanded sectional view showing other examples.

1 to 3 each have a sprocket wheel having a tooth number of 6 to 12, and two types of link chains 3x and 3y are arranged alternately and connected to each other. The link plates on both sides of the link chain 3x are conventionally available and have the same shape on the left and right, whereas the link plates 3y ₁ (outside) and 3y ₂ (inside) of the link chain 3y are not the same shape, and the link plates 3y _As shown in FIG. 1, ₂ is wider than the outer link plate 3y ₁ and is vertically longer, and is formed by an arc at the upper and lower ends. The gap between the link plates 3y ₂ vertically adjacent are connected through a link chain 3x while maintaining a gap of about 5 to 10 mm. As shown in FIGS. 1 and ₂ , a plurality of (five in this embodiment) bolt holes are drilled in the link chain 3y2. Consolidate.

First, FIG. 1 in which the dust collecting means is a screen frame will be described in detail. Screen frame 4 is upper beam 15
The screen main body (net) 14 is attached to the upper beam 15 and the lower beam 17 by a mounting plate 16 and a mounting plate 18, respectively.
And mounted with bolts and nuts 16a and 18a (as shown in FIG. 1). Also, the end of the side plate 19 may be bent into an L-shape at both side ends to protrude, and the screen body may be attached. Fastened with bolts and nuts 20 through the side plate 19 a configured screen frame in the link chain 3y ₂ of the right and left sides of the mounting hole as described above. The maximum length of the screen frame in the vertical direction is almost twice the link chain pitch, and the size of the screen frame is such that the gap between the screen frames adjacent in the vertical direction is about 10 mm to 30 mm as shown in FIG. To determine. An overhanging plate 100 having substantially the same width as the screen frame is protruded from the lowermost end of the screen frame 4 toward the uppermost end of the next screen frame. Press 110 with holding plate 120 and fasten with bolts and nuts. The bolt penetration hole of the elastic member 110 is an elongated hole. At the time of assembly, the elastic member 110 is fixed so that the front end of the elastic member 110 contacts the next screen frame. Elastic member 110
May be made to make side contact with the tip side of the upper beam 15 of the next screen frame as shown in FIG. 1 or by contacting the tip with the surface of the upper beam 15 as shown in FIG. You may. It is desirable that the elastic member 110 be a normal rubber plate or a synthetic resin having flexibility, and the thickness is selected from 3 to 10 mm. Both the upper beam 15 and the lower beam 17 can be used by pressing a lightweight section steel, but the diagonal overhang of the lower beam 17 on the side facing the running water is particularly suitable for storing the collected dust. Is formed, the first bucket part 21 is formed.
As shown in the figure, the lower beam 17 is made longer to some extent.

The upper beam 15 has an opening 50a over almost the entire surface.
Is provided to cover the screen main body 50 such as a wire mesh, expanded metal, and a row of bars to increase a dust removal area and reduce water flow resistance. The lower beam 17 has an aperture 60
When a is provided to cover the screen main body 60, the water flow resistance is further reduced.

The operation of the high-speed dust remover of the present invention configured as described above will be described.

When the high-speed dust remover of the present invention is installed in the intake port 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 in the running water comes into contact with the screen bodies 14, 50, 60. When the screen frame 4 rises from the water, the lower beam is caused by the gravity of the dust itself.
It is stored in 17 bucket sections 21. Thereafter, the upper sprocket 1 is meshed and rotated, and the dust stored in the bucket portion 21 of the lower beam of the screen frame 4 turned upside down is slid on the guide plate 9 and discharged to a predetermined trough 10 to be collected.

As described above, in the embodiment of the present invention, dust removal of the flowing water flowing through the water channel is mainly performed by the screen main body 14 of the screen frame 4 and the screen main bodies 50 and 60 are assisted.
In particular, the screen main body 50 contributes to an increase in the dust removal area. Further, since the elastic member is provided between the adjacent upper and lower screen frames, the bypass flowing water passing through the gap between the two screen frames can be prevented. In addition, in the high-speed dust removing apparatus according to the embodiment of the present invention, the link plate 3y ₂ inside the link chain 3y is widened, and the length is extended vertically to form an arc at the tip, and 5 to 10 mm. since the link plate 3y ₂ holds the gap is continuous, the screen frame 4
The flow of flowing water can be minimized at both ends.
In addition, since the front and rear connection parts are not a combination of unevenness like the conventional water impervious plate, they are both arc-shaped upper and lower link plates, so they also interfere with each other when rotating the upper and lower sprockets The smooth rotational movement is maintained without the occurrence of.

[Effects of the Invention] In the present invention, an opening is provided in the upper beam of the screen frame, and a screen main body made of a wire mesh, expanded metal, or a bar array covering the opening is provided. With this dust removing device, the water flow resistance when the screen frame moves up and down is reduced, and the difference in water level before and after the dust removing device can be kept small. Therefore, high quality and clear water intake can be secured, and the endless endless movement of the screen frame is performed smoothly, and the maintenance performance is excellent, the vibration and noise of the dust removal device are reduced, and the service life of the equipment and the work environment are improved. Is done.

[Brief description of the drawings]

1 to 3 show an embodiment of a high-speed dust remover according to the present invention. FIG. 1 is a longitudinal sectional view showing a connected state of a screen frame.
FIG. 2 is a front view of a screen frame, and FIG. 3 is an enlarged vertical sectional view of a main part showing another embodiment. 4 to 6 show a conventional embodiment, FIG. 4 is an overall schematic view, FIG. 5 is a diagram showing a meshing state of a sprocket and a link chain, FIG. 6 shows details of a screen frame, and FIG. (A) is a side sectional view, and FIG. 6 (b) 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: shaft of upper sprocket wheel, 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, 21 ... bucket part , 50 ... screen body, 50a ... opening, 60 ... screen body, 60a ... opening, 100 ... overhang plate, 110 ... elastic member, 120 ... holding plate.

Claims (1)

(57) [Claims] A screen for dust collection is provided on a screen frame having a U-shaped cross section formed by a pair of left and right side plates joined to both ends of an upper beam, a lower beam, and both upper and lower beams. Endless link chains are diagonally joined via a link plate inside the link chains so that the upper beam upper surface descends toward the downstream side, and the link chains are driven via a pair of upper and lower sprocket wheels. The upper beam, the lower beam, and both side plates are all formed of a flat plate, an opening is provided in the upper beam of the screen frame, and the opening is a screen body such as a wire mesh. High-speed dust remover covered with.