JPS586893Y2 - Dust removal equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dust removal device used for removing dust accumulated on a screen installed across a waterway such as a waterway, a sewerageway, or a drainage canal.

As a dust removal device used in waterways, etc., there is a known rotary type dust removal device in which a rake is attached to a pair of endless chains that are driven in circulation, and the rake is used to rake and remove the dust accumulated on the surface of a screen. .

This rotary type dust removal device has the advantage that the height of the device can be lower compared to a vertical movement type dust control device in which the rake moves up and down intermittently, but it has the disadvantage that it is vulnerable to the intrusion of coarse foreign objects. .

In other words, if a large foreign object gets into the bottom of a waterway, etc., the rake will get stuck in the foreign object, resulting in overpowering the drive unit, deformation of the rake body, and sometimes damage to the rake or chain. Alternatively, there is a drawback that malfunctions such as damage to the bar screen occur.

The present invention was proposed in view of the above-mentioned conventional drawbacks.
In a dust removal device that is installed upstream of a screen installed across a waterway and has a number of rakes attached to an endless chain, the rakes are installed on the endless chain so as to be able to swing freely about a horizontal axis, and are supported by springs. Because the rake is always energized to take a predetermined raking posture, coarse foreign matter may enter the bottom of the waterway, etc., and the rake may hit it.
If an abnormally large force is applied to the rake, rotate the rake toward the inside of the endless chain against the spring force to release the force, prevent the rake from becoming jammed, and prevent the drive unit from overpowering. The purpose of the present invention is to provide a dust removal device that is free from malfunctions such as damage to the rake or chain.

Embodiments of the present invention will be specifically described below with reference to the drawings.

Figures 1 to 6 show a dust removal device according to an embodiment of the present invention installed in a waterway, with Figure 1 being a side sectional view and Figure 2 being a front sectional view. .

In the figure, reference numeral 1 denotes an endless chain connected in an endless manner, and two threads are arranged in the width direction of the channel. Between these endless chains, a large number of rods 2 are arranged at required intervals in the longitudinal direction of the chain. Both ends are fixed to the chain 1 with bolts, nuts, etc.

In addition, in the longitudinal direction of these rods 2, that is, in the waterway width direction,
The proximal ends of a large number of arms 3 are fixed to the rod 2 at required intervals, and two prongs of rake material 7 formed in an L-shape are inserted into the through holes 4 at the tips of the arms 3. A base end 8 of the shape is pivotally attached to a horizontal shaft 9 such as a pin so as to be swingable, and a helical ring of a pair of torsion coil springs 10 is connected between the arm 3 and the fork of the rake member 7. A section 11 is loosely fitted to the horizontal shaft 9, one arm piece 12 of the spring 10 is engaged with a protruding piece 13 protruding from both sides near the base end of the arm 3, and the other arm piece 1
2' is engaged with the rear part of the connecting part 7' of the forked part of the rake member 7.

The elasticity of the spring 10 presses the relay member 7 to the outside of the chain 1, and the proximal end of the rake member 7 engages with stoppers 14 protruding from both sides of the center of the arm 3. By matching, the rake material 7 can maintain a rake-up attitude on the descending side so as not to rotate or rotate more freely than necessary.

Further, for every several groups of rods of the rake material 7 in the longitudinal direction, the lower surface portion of the scraping plate 5 having the comb-shaped portion 15 at the tip is fixed to the upper surface of the rake material 7 by welding or the like, thereby forming one set of rake groups 6. A plurality of such rake groups 6 are independently provided at close intervals in the longitudinal direction of the rod 2.

Both ends of the rod 2 to which the rake group 6 is attached are fixed to a pair of endless chains 1, and the endless chains are connected to support shafts 1 disposed on both left and right sides near the bottom of the waterway A.
a driven sprocket 17 rotatably attached to 6;
- It is wound around a drive sprocket 19 attached to a drive shaft 18 disposed in the upper width direction of the waterway A.

This drive shaft 18 is fixed on a pedestal 20 installed on the floor, and a frame 2 that also serves as a guide rail spanning the lower part of the waterway.
1, it is provided so as to be vertically adjustable and located rearward of the lower support shaft 16.

A transmission sprocket 22 is provided at the end of the drive shaft 18 , and a transmission chain 25 is wound around this and a drive sprocket 24 of a drive device 23 installed on a pedestal 20 . is rotated, and the endless chain 1 is driven to circulate.

Further, the guide rail portion 26 of the frame 21 prevents the endless chain 1 from bending inward (from the axis) and shifting, especially on the raising side.

At the rear part of the rising side of the rake material 7, a screen 28 having a large number of vertical bars is disposed with a length from near the bottom of the waterway to near the upper end of the floor opening 29, and a guide is provided at the top of the screen 28. A wall plate 30 is provided with an inclination angle substantially the same as that of the screen 28, and is supported by a frame or the like.

Further, the upper end of the guide wall plate 30 is connected to the upper end of a guide plate 31 that guides the garbage to fall diagonally downward to the outside, and a hopper 32 is provided at the lower part of the guide plate 31. A conveyance device 35 such as a belt conveyor is disposed at the lower exit of the conveyor in the waterway width direction.

In the direction of the hopper 32, there is a vertically swinging scraping device 33.
is provided, and the tip of the scraping swing lever 34 in this scraping device 33 comes into contact with the base end side of the scraping plate 5 and is rotated upward as the scraping plate 5 moves upward. By elastically abutting the upper surface of the scraping plate 5 and moving to the tip side of the scraping plate 5, the dust on the scraping plate 5 is moved to the tip side of the scraping plate 5, and the dust is moved to the tip side of the scraping plate 5. The garbage on the scraping plate 5 is dropped above the center of the upper end opening of the hopper 32.

After the rake plate 5 has been moved, it returns to a nearly horizontal position and is ready for the next group of rakes 6 that will rake up from below.

In the figure, 2' is a reinforcing plate fixed to the rod 2, and 36 is a support member that supports the center of the screen 28, both ends of which are attached to the side walls of the waterway.

Next, the scraping action of the dust removal device at the lower part of the waterway will be explained.

As shown in FIG. 7, if a coarse, hard foreign object 36 enters the lower part of the waterway, the rake material 7 will move against the spring 10 relative to the horizontal axis 9, as shown by the solid line in the figure. The chain rotates backward in the direction of the arrow and assumes an escape posture, and in that state, as the chain 1 moves upward,
I will be moving.

When the contact with the foreign object 36 is removed, the force of the spring 10 returns it to its original position.

It goes without saying that the raking bodies other than the raking body 6 having the rake material 7 are independently provided on the rod 2, but move while maintaining the normal raking posture.

Furthermore, when lifting up large chunks of garbage such as rags, the spring compresses them while lifting them up.

In addition, when implementing this invention, one end of the spring 10 is fixed to the arm 3 and the other end is fixed to the rake material 7, or by other suitable means, the rake material 7 is also attached to the descending side of the chain 1. It goes without saying that the number of arms 3 and rake groups may be one, two, or more as long as they are held with a slight rotation.

As explained above, the present invention is a dust removal device that is installed upstream of a screen installed across a waterway and has a large number of rakes attached to an endless chain. The rake is movable and is always biased by springs to take a predetermined raking posture, so if a large foreign object gets into the bottom of a waterway, the rake will resist the spring and pull the chain. It is possible to rotate inward and escape, so there is no chance of jamming, and the power of the drive unit will not be overpowered.
There is no risk of malfunctions such as deformation or damage to the rake or breakage of the chain, and once the rake is no longer in contact with foreign objects, it will automatically return to its original raking position and operate normally. It has many effects, such as being able to perform raking work.

[Brief Description of the Drawings] Fig. 1 is a side sectional view showing a dust removal device according to an embodiment of the present invention installed in a waterway, Fig. 2 is a front sectional view thereof, and Fig. 3 shows the rake part. Fig. 4 is an enlarged side sectional view, Fig. 4 is a rear view thereof, Fig. 5 is a plan view showing the relationship between the scraping plate and the screen, and Fig. 6 is an enlarged side sectional view showing the part where garbage is scraped off and transported. 7 are explanatory diagrams showing the relationship between the rake and foreign matter at the bottom of the waterway. 1... Endless chain, 2... Rod, 3
...Arm, 4...Through hole, 5...
Scraping plate, 6... Rake group, 7... Rake material, 8... Base end, 9... Horizontal axis, 10
... Spring, 12 ... Arm piece, 14 ...
...Stopper, 15...Comb-shaped portion, 16...
... Support shaft, 17 ... Driven sprocket, 18
... Drive shaft, 19 ... Drive sprocket, 21 ... Frame, 23 ... Drive device, 25 ... Transmission chain, 26.・・・・・・
・Guide rail part, 27... Long plate body, 28・
... Screen, 29 ... Opening, 30
...Guide wall, 32 ...Hopper, 3
3... Scraping device, 35... Receiving part.

Claims (1)

[Scope of utility model registration request] In a dust removal device that is installed upstream of a screen installed across a waterway and has a number of rakes attached to an endless chain, the rakes are installed on the endless chain so as to be able to swing freely about a horizontal axis, and are supported by springs. A dust removal device characterized in that it is always energized to take a predetermined scraping posture.