KR101774021B1 - Rotary type dust removing machine having blocking screen in the lower part of main screen - Google Patents

Abstract

The present invention relates to a rotary dusting machine of a structure capable of effectively preventing impurities from passing through a space generated between a main screen and a rear auxiliary screen. In the present invention, a blocking screen is provided for blocking impurities to pass through an outflow space between a rear auxiliary screen and a lower end of the main screen. The blocking screen includes: a rotary shaft rod having both ends supported by both side frames; and a plurality of blocking members fixed to the rotary shaft rod and arranged side by side, and extending downward so as to collect the impurities in the outflow space.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rotary damper having a blocking screen at the bottom of a main screen,

The present invention relates to a rotary damper provided with a shield screen at the bottom of a main screen and more particularly to a shield damper for shielding a space through a space generated between a main screen and a rear sub- To a rotary damper having a structure installed at the bottom of a main screen.

A damper installed in a repair channel such as a drainage pumping station, a water supply water intake pipe, a related water supply channel, a sewage treatment plant and a dam filters the impurities such as household garbage floating on the water main screen with the main screen, Device.

A rotary damper of such a damper is configured to collect damages while rake is moving in an infinite orbit. The damper includes a main screen for filtering contaminants, an infinite orbit circulating on both sides of the main screen, A plurality of rakes for raising the contaminants of the main screen to collect the contaminants caught by the rake, and a collecting portion for collecting the contaminants conveyed upward by the rake

In the case of the rotary damper of such a configuration, since a motion space is secured even if the rake covers the lower end of the main screen, a space is formed between the main screen and the bottom surface of the water channel so that the obstacle can pass therethrough, It is necessary to provide a separate shut-off device for preventing and eliminating the passage of heat.

Figs. 1 and 2 show a conventional rotary damper having such a structure, which is described in Japanese Patent Application Laid-Open Publication No. 2012-17585.

1 and 2, the vibration damper 1 includes a main screen 2 having a lower end spaced from the bottom surface S of the water channel so as to allow the rake 9 to pass therethrough, And a rear screen 3 installed on the main screen 2 for capturing the contaminants that have passed through the lower portion of the main screen 2.

A rake 9 is mounted on the endless chain 7 at a predetermined interval and by the circular movement of the endless chain 7 the rake 9 scoops the contaminants of the main screen 2 and the rear screen 3 Into the hopper 8 on the upper side.

An intermediate screening member 4 is provided between the main screen 2 and the rear screen 3. The intermediate screening member 4 forms the impurity trapping passage 5 for catching the impurities while the rake 9 passes.

The intermediate screen 4 is constituted by a fixing table 4a and an intermediate screen 4b and the intermediate screen 4b is provided parallel to the main screen 2 and the rear screen 3. [

It is also possible to retract rearward of the rear screen 3 in the passage of the rake 9 to the contaminant trapping furnace 5 and to move backward from the rear screen 3 to the contaminant trapping path 5 A cover screen 6 is provided which can be pushed.

The cover screen 6 is provided with a plurality of arc-shaped screen bars 6a in the widthwise direction of the water channel, and a weight 6c is provided at the rear in a state of being coupled to the rotary shaft 6b.

The contaminants proceeding to the contaminant trapping path 5 are trapped in the intermediate screen 4b, the rear screen 3 and the cover screen 6 after passing through the lower portion of the main screen 2, Can be prevented.

2 (a), the cam striker 9a presses the cam plate 6d, so that the lid screen 6 rotates about the rotation axis 6b And the cover screen 6 is retracted rearward of the rear screen 3 so as to avoid interference with the rake 9. Then, the rake 9 can scrape off the contaminants captured on the intermediate screen 4b, the rear screen 3, and the cover screen 6. [

After the rake 9 has passed, the cam striker 9a moves away from the cam plate 6d, and the gravity action of the weight 6c causes the lid screen 6 to move back to the rear screen 3 as shown in Fig. 2 (c) To the contaminant trapping path (5).

Thus, it is possible to prevent the contaminants from flowing out to the downstream side through the space between the main screen 2 and the rear screen 3.

However, in the case of the conventional rotary damper described above, the intermediate screen 4, the cover screen 6, the cam plate 6d, the weight 6c, and the like are provided in order to block the contaminants passing through the lower side of the main screen 2 There is a problem that the structure is complicated and it is difficult to manufacture.

In addition, since the contaminant trapping furnace 5 is formed long rearwardly between the intermediate screen 4b and the rear screen 3, the floating branches or the like are introduced into the contaminant trapping furnace 5, Which causes it to be caught on the rear screen 3, thereby increasing the operating load of the rake 9 pushing it.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an air conditioner which is relatively simple to manufacture and can effectively prevent the passage of contaminants through the space by blocking the space generated between the main screen and the rear sub- Structure of the rotary damper.

It is another object of the present invention to provide a structure such as a scavenging trap furnace in order to solve problems such as an increase in the operation load of the rake by engaging branches or the like in the scavenging trap formed between the intermediate screen and the rear screen Thereby providing a rotary damper.

According to an aspect of the present invention, there is provided a main screen, comprising: a main screen installed in a water channel to filter contaminants; both side frames installed on both sides of the main screen; A rotary damper with a rake carried along a screen, the damper comprising: a rear sub-screen installed behind the main screen to filter contaminants flowing between the main screen and the bottom of the water channel; And a blocking screen for blocking the passage of the contaminants in the outflow space between the lower ends of the screen, wherein the blocking screen includes a rotary shaft rod extending in the width direction of the main screen and having both ends supported by the opposite side frames, And are fixed to the rotary shaft rods so as to be arranged side by side, And a plurality of blocking members extending downward so as to collect the contaminants, wherein when the rake pushes the blocking member, the rotating shaft bar and the plurality of blocking members integrally rotate about the central axis of the rotating shaft rod, And the plurality of blocking members are returned to a state of extending downward by the gravity after passing through the rake.

The present invention is also characterized in that a support cap having both ends of the rotary shaft rod coupled to the side frame and having a support hole into which the end of the rotary shaft rod is inserted and an annular oil reed around the inner circumferential surface of the support shaft, And the support cap is fitted to the mounting hole provided in the side frame from the outside so that the support hole is located inside the side frame and the flange of the support cap is located outside the side frame The support cap is detached to the outside of the side frame when the flange and the side frame are bolted to each other.

The main screen may include a plurality of main screen bars extending in the vertical direction and being arranged side by side, the sub screen bars being connected to the lower ends of the plurality of main screen bars, respectively, Wherein each of the lower screen bars is attached at left and right sides with a lower end of a main screen bar extending in the vertical direction therebetween and is spaced apart from each other, And the left and right lower-side screens extend in a semicircular shape in a rearward-facing manner.

Further, in the present invention, the rotary shaft bar is positioned on the upper side of the plurality of lower screen bars, and the blocking member extends downward through a space between the left and right lower screen bars, And when entering the space between the left and right lower-end screen bars, when raising about the central axis, the rake is allowed to pass while pushing the blocking member.

Further, the present invention is characterized in that the rake has an inner rake fitted between the main screen bars of the main screen on an upper plate portion for raising the contaminants, an outer rake protruding in a direction toward the outside of the opposite side, And a rake roller having a rotation axis in the width direction of the main screen, which is installed in a concave space between the rake roller and the rake roller. As the rake proceeds, the rake pushes the blocking member while the blocking member contacts the rake roller Another feature.

The rotary damper according to the present invention can prevent the obstacle from passing rearward through the space by blocking the space generated between the main screen and the rear auxiliary screen by a shield screen having a relatively simple structure, At this point, the rake can remove the obstruction on the screen.

In addition, the present invention is configured such that the blocking screen is installed at a more advanced position so as to eliminate the problem that branches are trapped in the obstacle capturing path formed between the intermediate screen and the rear screen to increase the operating load of the rake, And eliminates the problem of trapping twigs and the like in the trapping traps.

In addition, the present invention is configured to extend downwardly so that the blocking member passes through a space between the left and right lower screen bars, so that it is provided at a position where the rake can contact the rake roller formed between the inner rake. As a result, the rake can push the blocking member while the rake roller and the blocking member are in contact with each other, so that damage and noise due to wear of the rake and the blocking member can be prevented.

In addition, the present invention is configured such that the rotation shaft of the shielding frame can be easily supported by the support cap provided on the side frame, and the support cap can be released to the outside of the side frame when replacing or repairing the shielding frame, Thereby facilitating disassembly of the blocking frame from the vibration damper.

Brief Description of the Drawings Fig. 1 is an overall structural explanatory view of a conventional rotary damper
Fig. 2 is a diagram showing the configuration and operation of the portion in which the impregnation trapping furnace and cover screen are installed in the rotary damper of Fig. 1
3 is a side view of a rotary damper according to an embodiment of the present invention
Fig. 4 is a perspective view showing the lower structure of the rotary damper according to the embodiment of the present invention. Fig.
5 is a structural explanatory view of a side sectional configuration of a lower portion of a rotary damper according to an embodiment of the present invention.
6 is a structural explanatory view of a bottom front structure of a rotary damper according to an embodiment of the present invention;
7 is a cross-sectional view of one side of a blocking screen in a rotary damper according to an embodiment of the present invention
8 is an exploded perspective view showing the structure of a lower portion of a main screen and a blocking screen in a rotary damper according to an embodiment of the present invention.
9 is an explanatory view for explaining a process in which a rake passes through a lower side of a main screen in a forward direction in a rotary damper according to an embodiment of the present invention
Fig. 10 is an explanatory diagram showing a configuration in which the rake and the blocking screen are viewed from the front of the rake in the state of Fig. 9 (b)
11 is a side cross-sectional view of a rake according to an embodiment of the present invention.
12 is an explanatory view for explaining a process in which a rake passes through a lower side of a main screen in a reverse direction in a rotary damper according to an embodiment of the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

3 and 4, a rotary damper according to an embodiment of the present invention includes a main screen 10 installed on a water channel for filtering contaminants, and a pair of side frames 15 installed on both sides of the main screen 10 And a rake 30 that is transported along the main screen 10 to scrape off the contaminants caught in the main screen 10. [

The main screen 10 includes a main screen bar 11 which is inclined at a predetermined angle to the rear of the water channel and extends up and down at regular intervals in the width direction of the water channel to form a barrel structure, Section.

The main screen 10 includes a plurality of main screen bars 11 extending in the vertical direction and being installed side by side and being connected to the lower ends of the plurality of main screen bars 11, And a plurality of lower screen bars 13 extending from the lower end to the rear in a curved manner.

The main screen bars 11 extend in the vertical direction and are arranged side by side. The main screen bars 11 are mainly engaged with the contaminants and have a straight bar shape. The main screen bar 11 is a part constituting the main screen 10 in a conventional rotary damper.

The lower screen bar 13 is attached to the lower end of the main screen bar 11 and has a rearward curved shape so as to face the rear screen 40, which will be described later, at a certain distance.

Each of the lower screen bars 13 is attached at the left and right sides with a lower end of a main screen bar 11 extending in the vertical direction therebetween, And left and right lower screen bars 13a and 13b extending in a semicircular shape in a rearward direction.

8, one lower screen bar 13 is composed of left and right lower screen bars 13a and 13b and is attached to the lower end of one main screen bar 11 at both sides. Therefore, the interval between the left and right lower screen bars 13a and 13b is an interval corresponding to the thickness of one main screen bar 11. [

The lower screen bar 13 has a semi-circular curvature shape and a semicircular shape is opposed to a portion 41a forming a concave curvature of the rear auxiliary screen 40. [

The lower end of the lower screen bar 13 is coupled with a connecting bar 14 connecting the lower screen bars 13 to each other.

A cutout groove 14a to which a connecting bar 14 is coupled is formed at an end of each lower screen bar 13 and a cutout groove 14a of a plurality of lower screen bars 13 is formed in the width direction of the main screen 10 And the lower screen bar 13 are coupled to each other.

Accordingly, the lower screen bar 13, which is a plate-shaped member, is not easily deformed by an external force such as a flow of water by the connecting bars 14 that are coupled to each other.

The side frames 15 are provided on both sides of the main screen 10 in a plate shape to support the main screen 10. A drive chain 16 for moving the guide paths is installed inside the side frames 15 . The rake 30 is fixed to the drive chain 16 by a bracket and can be forcibly moved along the main screen 10 by the movement of the drive chain 16. [

The rake (30) receives the power of the driving motor and moves in an endless track by the driving chain (16). A plurality of rakes (30) are installed on the driving chain (16) at regular intervals. The inner rake 32 of the rake 30 is inserted between the main screen bars 11 while being moved upward along the longitudinal direction of the main screen bar 11, Collect the contaminants and discharge them from the upper side.

The rake 30 is moved downward from the rear of the main screen 10, and is circularly moved as a whole.

10 and 11, the rake 30 includes an inner rake 32 which is sandwiched between the main screen bars 11 of the main screen 10 on the upper plate portion 30a for raising the contaminants, An outer rake 31 protruding in a direction toward the outside of the opposite side is formed and a rotary shaft 33a is provided in the concave space 32a between the inner rake 32 and in the width direction of the main screen 10, The rake roller 33 is provided.

The rake roller 33 is brought into contact with the blocking member 53 of the blocking screen 50 to prevent noise and abrasion due to the contact.

The rake roller 33 is located between the inner rake 32 and opposes the main screen bar 11 so that the rake roller 33 and the blocking member 53 are in contact with each other so that the blocking member 53 Is located at the position of the extension line where the main screen bar 11 extends vertically when viewed from the front.

That is, the left and right lower screen bars 13a and 13b are coupled to the main screen bar 11 and the blocking member 53 is positioned between the left and right lower screen bars 13a and 13b, The upper and lower extension lines and the blocking member 53 may coincide with each other when viewed from the front without being shifted to the left or right side of the screen bar 11 as shown in Fig.

Meanwhile, the rotary damper according to the embodiment of the present invention includes a rear auxiliary screen 40 installed on the rear side of the lower side of the main screen 10 to filter contaminants flowing between the main screen 10 and the bottom of the water channel, A blocking screen 50 for blocking the passage of the contaminants in the outflow space S between the rear auxiliary screen 40 and the lower end of the main screen 10 is provided.

The rear auxiliary screen 40 is provided with a fixing member 46 on the bottom surface so that the obstacle flowing between the main screen 10 and the bottom of the water channel can be caught and the rear screen plate 41 is attached to the fixing member 46, And the rear screen plate 41 is vertically extended from the rear of the main screen 10 to a height higher than that of the front end of the rear screen plate 41. [

Further, the rear auxiliary screen 40 has a shape corresponding to the movement trajectory of the rake 30 so that the rake 30 can pass. That is, all the rear screen plates 41 installed side by side are provided so that the concave curved shape 41a corresponding to the trajectory of the rake 30 moves toward the main screen 10, That is, the lower screen bar 13 is spaced apart from the lower screen bar 13 by a predetermined distance.

The lower screen bar 13 of the main screen 10 has a curved shape of a semicircular curved shape that is rearwardly curved so as to correspond to the concave curved shape 41a of the rear screen plate 41, And the rake 30 passes through the space defined by the spacing.

When the rake 30 passes through the space between the main screen 10 and the rear auxiliary screen 40, the rake 31 of the rake 30 is sandwiched between the rear screen plates 41 The rear auxiliary screen 40 can be closed and the forward movement can be performed.

Meanwhile, the blocking screen 50 is installed to block the passage of contaminants in the space between the rear auxiliary screen 40 and the lower end of the main screen 10.

4 and 5, the blocking screen 50 includes a rotating shaft 51 extending in the width direction of the main screen 10 and having both ends supported by both side frames 15, And a plurality of blocking members 53 which are fixed to the rod 51 and are arranged side by side and extend downward so as to collect the contaminants in the outlet space S. [

The blocking member 53 is coupled to the rotating shaft rod 51 so that the blocking member 53 can rotate about the center axis 51f of the rotating shaft rod 51. [ The rotary shaft rod 51 is provided so as to be pivotable together with the blocking member 53 so that the rake 30 can advance forward while pushing the blocking screen 50.

Referring to FIG. 7, the rotary shaft rod 51 is supported at its both ends by supporting end caps 51c and 51d and a support cap 57 provided on the side frame 15, respectively.

The end supports 51c and 51d include a first end support body 51c fitted to the first shaft 51b and a second end support body 51b bolted to the first end support body 51c and fitted to the support cap 57 51d.

The first shaft 51b is in the form of a hollow pipe, and the first end support body 51c is fitted to both ends of the first shaft support body 51b and is supported by the end supports 51c and 51d at both ends.

The second shaft 51a is in the shape of a hollow pipe having a diameter larger than that of the first shaft 51b, and the first shaft 51b is located inside the second shaft 51a and surrounds the first shaft 51b. The blocking member 53 is fixed to the outer circumferential surface of the second shaft 51a by welding or the like and is in a suspended state.

The second shaft 51a is provided with a fixing bolt 51e which is engaged with the fixing bolt 51e and the fixing bolt 51e is brought into close contact with the outer surface of the first shaft 51b so that the second shaft 51a is in contact with the first shaft 51b ).

The rotary shaft 51 includes a support cap 57 having both ends thereof coupled to the side frame 15 and having a support hole 57a through which the end of the rotary shaft 51 is inserted, And is supported by the side frame 15 via an annular oil-less bearing 58 provided around the inner circumferential surface of the rotary shaft rod 51 and surrounding the end of the rotary shaft rod 51.

The support cap 57 is fitted outside from the mounting hole formed in the side frame 15 so that the support hole 57a is positioned inside the side frame 15 and the flange 57b of the support cap 57 is engaged with the side frame 15, The flange 57b is engaged with the bolt 57c of the side frame 15 in a state where the flange 57b is located outside the frame 15.

Such a coupling configuration can be achieved by releasing the engagement of the bolt 57c at the time of disassembly for repair or replacement so that the support cap 57 can be released to the outside of the side frame 15, So that the rotary shaft rod 51 can be easily drawn out forward.

8, the rotary shaft rod 51 is positioned above the plurality of lower screen bars 13, and the blocking member 53 passes through a space between the left and right lower screen bars 13a and 13b And extends downward. The blocking member 53 enters the space between the left and right lower screen bars 13a and 13b when the blocking member 53 is rotated up around the central axis 51f of the rotating shaft rod 51, (30) is allowed to pass while pushing the blocking member (53).

The plurality of blocking members 53 include a ring shape and a neck portion 53a extending upward from the upper end thereof is fixed to the rotating shaft rod 51 so as to be suspended from the rotating shaft rod 51. [

The blocking screen 50 includes a rotating shaft bar 51 and a pair of annular supporting plates 54a and 54b for supporting the blocking member 53 and the blocking member 53 thereof.

The annular support plate 54 is ring-shaped with a central portion penetrating therethrough, and a rotary shaft rod 51 is fitted in the central portion thereof. The pair of the annular support plates 54 supports the one blocking member 53 in close contact with each other.

The annular support plate 54 is supported and reinforced on both sides so that the plate-like barrier member 53 is not easily deformed by impacts or external forces of water currents.

As shown in Figs. 7 and 8, a pair of annular support plates 54a and 54b are provided on both sides of the blocking member 53, and left and right lower screen bars 13a , 13b.

The rotary shaft rod 51 constituting the blocking screen 50 and the blocking member 53 and the pair of annular supporting plates 54a and 54b are fixed to each other so as to rotate integrally about the central axis 51f of the rotary shaft rod 51 And a minute gap is formed between the left and right lower screen bars 13a and 13b and the annular support plate 54 so that the left and right lower screen bars 13a and 13b, It does not interfere.

Referring to FIG. 8, the left and right lower screen bars 13a and 13b are formed with recessed rotary shaft bar grooves 17 at a position where the rotary shaft bar 51 is positioned at an intermediate portion thereof. The left and right lower screen bars 13a and 13b and the rotary shaft rod 51 are not in contact with each other and are not in contact with each other at a predetermined position And the rotary shaft rod 51 is partially inserted into the rotary shaft rod mounting groove 17 with an interval.

In such a configuration, when the rotary shaft bar 51 tries to be deformed due to strong water flow or the like, the rotation shaft bar mounting groove 17 restricts the degree of deformation thereof so that the left and right lower side screen bars 13a, To prevent and support the deformation of the body.

9 shows a process in which the rake 30 passes through the lower side of the main screen 10 in the forward direction in the rotary damper according to the embodiment of the present invention.

9 (a) and 9 (b), when the rake 30 advances forward from the lower side of the main screen 10, the rake 30 pushes the blocking member 53, And the plurality of blocking members 53 are integrally rotated about the central axis 51f of the rotary shaft rod 51 and raised and the plurality of blocking members 53 are lowered by gravity after passing through the rake 30 And returns to the initial state of Fig. 5 extending downward.

At this time, the plurality of blocking members 53 are pushed up to the space formed by the space between the left and right lower screen bars 13a and 13b, so that interference with the main screen 10 does not occur, The passage can be smoothly performed.

10 is an explanatory diagram showing a configuration in which the rake 30 and the shutoff screen 50 are viewed from the front of the rake 30 in the state of Fig. 9 (b), Fig. 11 is a side cross- to be.

10 and 11, when the rake 30 passes the blocking screen 50 while pushing down the blocking screen 50 from the underside of the main screen 10, the blocking member 53 slides on the rake roller 33 of the rake 30, The rake 30 pushes the blocking member 53 in contact with the stopper 53.

This is to cause the rolling contact by the rake roller 33 to occur so as to prevent rapid wear due to continuous contact between the rake 30 and the blocking member 53.

As shown in Fig. 10, the rake roller 33 is located inside the concave space 32a between the inner rake wheels 32, and is disposed at regular intervals with approximately three inner rake wheels 32 interposed therebetween.

The inner rake (32) is a portion that is inserted and raised between the main screen bars (11) of the main roller, and the rake roller (33) is a position facing each other with the main screen bar (11).

The blocking member 53 is located on the extension line of the main screen bar 11 as shown in Fig. 6 when viewed from the front (front side), so that the rake rollers 33 can be brought into contact with the blocking member 53 accurately.

10, when the rake roller 33 comes into contact with the blocking member 53 and pushes the blocking member 53, the entire blocking member 53 is moved in a state in which the rotating shaft bar 51 The blocking member 53 does not come into contact with the rake 30 at a position where the rake roller 33 is not provided among the positions between the inner rake wheels 32 because the pivot member 51 pivots about the central axis 51f.

12 illustrates a process in which the rake 30 passes the lower side of the main screen 10 in the reverse direction.

The rake 30 normally moves in the forward direction to remove the contaminants. However, the reverse progression can be temporarily performed for the purpose of removing foreign matters caught in the main screen 10, the rear sub-screen 40, or the like.

12 (a) and 12 (b), when the rake 30 moves rearward from the lower side of the main screen 10, the rake 30 pushes the blocking member 53, The plurality of blocking members 53 are integrally rotated counterclockwise about the central axis 51f of the rotary shaft rod 51 and are raised and moved by the gravity after passing through the rake 30, And returns to the initial state extending downward.

At this time, the plurality of blocking members 53 are pushed up to the space formed by the space between the left and right lower screen bars 13a and 13b, so that interference with the main screen 10 does not occur, The passage can be smoothly performed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the particular embodiments set forth herein. It goes without saying that other modified embodiments are possible.

10; main screen 11; main screen bar
13: Lower screen bar 13a, 13b: Lower screen bar
14; a connecting bar 15; a side frame
16; drive chain 21a;
21b; a circular hollow 30;
31, an outer rake 32,
33, a rake roller 40, a rear auxiliary screen
41, a rear screen plate 46,
50; a blocking screen 51;
51a, a second shaft 51b, a second sharpener z
51c, 51d, an end support 53,
54, annular support plates 54a, 54b,
57: Support cap 57a:
58; Oilless bearing S; Outflow space

Claims (5)

A main screen (10) installed on the water channel to filter the contaminants,
Side frames 15 installed on both sides of the main screen 10,
And a rake (30) transported along the main screen (10) to scrape off the impurities caught in the main screen (10), the rotary damper comprising:
A rear auxiliary screen (40) installed at the rear of the main screen (10) below the main screen (10) to filter contaminants flowing between the main screen (10) and the bottom of the water channel,
A blocking screen 50 for blocking the passage of contaminants in the outflow space S between the rear auxiliary screen 40 and the lower end of the main screen 10 is provided,
The blocking screen (50)
A rotating shaft rod 51 extending in the width direction of the main screen 10 and having both ends supported by the side frames 15,
And a plurality of blocking members (53) which are fixed to the rotary shaft rod (51) and are arranged side by side and extend downward so as to collect the contaminants of the outflow space (S)
When the rake 30 pushes the blocking member 53, the rotating shaft rod 51 and the plurality of blocking members 53 integrally rotate about the central axis 51f of the rotating shaft rod 51 And the plurality of blocking members 53 are returned to the lower side by the gravity after passing through the rake 30,
Both ends of the rotary shaft rod (51)
A support cap 57 attached to the side frame 15 and having a support hole 57a through which the end of the rotary shaft 51 is inserted; 51 which are respectively supported on the both side frames 15 via an annular oil-less bearing 58 surrounding the ends of the oil-
The support cap 57 is fitted to the mounting hole provided in the side frame 15 so that the support hole 57a is located inside the side frame 15 and the flange of the support cap 57 is engaged with the side frame 15. [ (15) by being bolted to the side frame (15) in a state where the flange (15) is located outside the side frame (15)
And the support cap (57) can be released to the outside of the side frame when the bolt connection of the flange and the side frame (15) is released. delete A main screen (10) installed on the water channel to filter the contaminants,
Side frames 15 installed on both sides of the main screen 10,
And a rake (30) transported along the main screen (10) to scrape off the impurities caught in the main screen (10), the rotary damper comprising:
A rear auxiliary screen (40) installed at the rear of the main screen (10) below the main screen (10) to filter contaminants flowing between the main screen (10) and the bottom of the water channel,
A blocking screen 50 for blocking the passage of contaminants in the outflow space S between the rear auxiliary screen 40 and the lower end of the main screen 10 is provided,
The blocking screen (50)
A rotation axis rod 51 extending in the width direction of the main screen 10,
And a plurality of blocking members (53) which are fixed to the rotary shaft rod (51) and are arranged side by side and extend downward so as to collect the contaminants of the outflow space (S)
When the rake 30 pushes the blocking member 53, the rotating shaft rod 51 and the plurality of blocking members 53 integrally rotate about the central axis 51f of the rotating shaft rod 51 And the plurality of blocking members 53 are returned to the lower side by the gravity after passing through the rake 30,
The main screen 10 includes a plurality of main screen bars 11 extending in the vertical direction and arranged side by side,
And a plurality of lower screen bars (13) coupled to the lower ends of the plurality of main screen bars (11) and extending from the lower end of the main screen (10)
Each of the lower screen bars 13 is attached at left and right sides with one lower side of the main screen bar 11 extending in the up and down direction interposed therebetween, And left and right lower screen bars (13a, 13b) extending in a semicircular shape from the lower end to the rear side in a rolled shape. The method of claim 3,
The rotating shaft bar 51 is positioned on the upper side of the plurality of lower screen bars 13,
The blocking member 53 extends downward through a space between the left and right lower screen bars 13a and 13b,
The blocking member 53 enters the space between the left and right lower screen bars 13a and 13b when the blocking member 53 rotates about the central axis 51f of the rotating shaft bar 51, Is allowed to pass while pushing the blocking member (53) The method according to any one of claims 1, 3, and 4,
The rake (30)
An inner rake 32 fitted to the main screen 10 and an outer rake 31 protruding in the direction opposite to the outer side are formed on the upper plate 30a for raising the contaminants, A rake roller 33 having a rotation axis 33a in the width direction of the main screen 10 is provided in a concave space 32a between the main screen 10 and the main screen 10,
Wherein the rake (30) pushes the blocking member (53) while the blocking member (53) contacts the rake roller (33) as the rake (30) proceeds.

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