KR101695462B1 - A Rotary Dust Removal Device Capable of Self Removing Caught Dust - Google Patents

Abstract

The present invention relates to a rotary dust remover capable of autonomously removing caught foreign materials. More specifically, an operation load of an operation unit to operate a rake is measured, so the rake is reversely rotated to remove foreign materials caught in a main screen when overload equal to or larger than a predetermined reference occurs. Therefore, the rake or the operation unit is prevented from being damaged or failed, and the foreign materials caught in the main screen can be removed without individual work. Moreover, the foreign materials caught in the main screen are easily removed through a gap maintenance member inserted to be able to rotate and a withdrawal side support unit rounded and sunk inside, and an opening/closing screen can be opened in reverse rotation of the rake, so the foreign materials caught by the reverse rotation of the rake can be smoothly removed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rotary type dust removing device capable of self-

More particularly, the present invention relates to a rotary type vibration damper capable of self-elimination of buried contaminants, and more particularly, to a rotary type vibration damper capable of self- A gap holding member which is rotatably inserted into the main screen to prevent breakage and failure of the rake or the driving unit and to remove the dirt adhered to the main screen without any additional operation, The present invention relates to an apparatus and method for removing a contaminant from a main screen of a vehicle, and more particularly, Possible self-removal of contaminants It relates to a rotary jejingi.

When a large amount of rainfall occurs at the treatment facility or rainwater drainage pump station where the wastewater and wastewater and sewage are inflowed and purified, or when floods occur, various kinds of contaminants are pushed through the rivers and waterways, It is caught on the screen. In this case, the impurities are composed of various floats such as refuse. Such impurities lower the flow rate of the water flowing along the river and the waterway, causing flooding in the upstream area of the river and the waterway, or in the downstream area of the river and the waterway, It can cause accumulation and disturb drainage.

The rotary type dust collecting device for removing the trickle dirts mainly includes a treatment facility in which ozone, wastewater, and wastewater are introduced and purified, or a rainwater drainage pump A screen for filtering the contaminants contained in the water, a rake for lifting the obstacles caught on the screen, and a driving device for transporting the rake.

(Patent Literature)

Korean Registered Patent No. 10-1124678 (Registered on Feb. 29, 2012) "Electric rotary damper"

However, in the conventional rotary type vibration damper, when the obstacle is caught between the screens, the rake often does not move or is damaged by an excessive force. Recently, when the rake is caught by the screen, Thereby preventing the breakage of the rake or the failure of the drive unit.

However, even in this case, there is a problem that the operator directly enters the water to remove the dirt adhering to the screen or to perform troublesome work using other devices in order to operate the damper again.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

It is an object of the present invention to provide a rotary damper capable of self-cleaning of an obstacle which can prevent damages and failures of a rake or a driving part and to remove a dirt trapped on a main screen without any additional operation.

An object of the present invention is to provide a rotary type vibration damper capable of self-cleaning of a buried object which allows normal operation to continue without any special operation even when a rough object is caught on the main screen.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotary type vibration damper capable of self-cleaning of a buried object to prevent breakage and failure due to overload even during reverse rotation.

An object of the present invention is to provide a rotary type vibration damper capable of self-elimination of a trapped object which prevents the obstacle from being caught by the horizontal bar.

It is an object of the present invention to provide a rotary type vibration damper capable of self-removing of an abrasive which can prevent abrasion of a gap holding member and enable smooth rotation, and which allows a gap holding member to maintain a constant position without being rotated.

An object of the present invention is to provide a rotary damper capable of smooth opening of a blocking member even in the reverse rotation of rake.

An object of the present invention is to provide a rotary type vibration damper capable of self-elimination of a trapping portion which is used to effectively remove a dirt trapped on a main screen during a reverse rotation of a rake.

In order to achieve the above object, the present invention is implemented by the following embodiments.

According to an embodiment of the present invention, a rotary damper according to the present invention includes a main screen installed on a water path of waste water, wastewater treatment facility or rainwater drainage pump station to filter out contaminants; And a damping portion for lifting and discharging the dirt trapped on the main screen, wherein the damping portion includes a pair of frames fixedly installed on both sides of the main screen, A rake attached to the lifting chain for raising a dirt hanging on the front surface of the main screen, a driving unit for providing driving force to the lifting chain to drive the lifting chain, and a control unit for controlling the operation of the driving unit And the control unit measures the driving load of the driving unit to rotate the hoisting chain in the reverse direction when the overload exceeding the set reference occurs.

According to another embodiment of the present invention, in the rotary damper according to the present invention, the driving unit includes a driving motor connected to the lifting chain to provide a driving force for rotating the lifting chain, And a driving load measuring module, wherein the control unit includes: a forward rotation module that rotates the lifting chain so that the rake is lifted from a front surface of the main screen; and a drive load measurement module that sets a drive load value of the drive motor measured by the drive load measurement module And a reverse rotation module for rotating the lifting chain so that the rake is lowered from the front of the main screen when an overload of the driving motor is detected by the overload detection module, .

According to another embodiment of the present invention, in the rotary type vibration damper according to the present invention, the reverse rotation module rotates the rake for a predetermined time, As shown in Fig.

According to another embodiment of the present invention, in the rotary type vibration damper according to the present invention, the controller may detect an overload of the drive motor by the overload detection module even after a predetermined time has elapsed after the operation of the reverse rotation module And an emergency return module for activating the forward rotation module to raise the rake along the front surface of the main screen.

According to another embodiment of the present invention, there is provided a rotary damper according to the present invention, wherein the main screen comprises: a plurality of vertical bars spaced apart from each other by a predetermined distance in a direction perpendicular to the ground; A plurality of horizontal bars connecting the plurality of vertical bars to each other; And a gap holding member inserted in the horizontal bar and formed between the plurality of vertical bars to maintain a constant gap between the vertical bars, wherein the gap holding member is rotatably inserted into the horizontal bar .

According to another embodiment of the present invention, in the rotary type vibration damper according to the present invention, the main screen includes a bending bush inserted between the gap holding member and the horizontal bar, And is formed of a non-metallic material that is inserted into both sides and has a circumferential surface bent in a 'B' shape.

According to another embodiment of the present invention, a rotary type vibration damper according to the present invention is installed on a floor surface, and is formed at a predetermined interval on the front surface of the main screen to detect a potential A screen; And an opening / closing screen hinged to an upper portion of the electric potential screen to be automatically opened and closed according to the rotation of the rake and blocking a space between the electric potential screen and the main screen, An elastic member formed between the electric potential screen and the blocking member to pull the blocking member toward the main screen and a reverse rotation opening formed by bending the upper end of the blocking member to the opposite side of the main screen, And the reverse rotation opening is formed only at the blocking members at both ends of the plurality of blocking members.

According to another embodiment of the present invention, there is provided a rotary damper according to the present invention, wherein the rake includes a rake blade for raising and scooping the obstacles hung on the front surface of the main screen, The rake blade includes an insert portion protruding in the direction of the main screen and inserted into a space between the main screens, and a rake blade portion protruding in a direction opposite to the main screen, Wherein the rake support portion includes an insertion side support portion formed on a lower side of the insertion portion and a lifting side support portion formed on a lower side of the lifting portion, And an inclined portion which is formed by being embedded in a round manner inward, Along the contaminants stuck to the constriction between the main screen is characterized in that the side to be removed before the main screen.

The present invention can obtain the following effects by the above-described embodiment, the constitution described below, the combination, and the use relationship.

The present invention measures a driving load of a driving unit that drives a rake, and when an overload exceeding a set reference is generated, the rake is rotated in the opposite direction to remove the contaminants trapped in the main screen, thereby preventing breakage or failure of the rake or the driving unit, There is an effect that it is not necessary to perform a separate operation to remove the clogged objects on the screen.

The present invention can be applied to a case where an overload of a driving unit is sensed and a rake is reversely rotated for a predetermined period of time and automatically raised again along a front surface of the main screen so that normal operation can be continued without any special operation .

When the overload of the driving unit is sensed again before the set time elapses during the reverse rotation of the rake, the forward rotation is instantaneously performed again to prevent the breakage and the failure due to the overload have.

The present invention has the effect of preventing the contaminants from being caught on the horizontal bars by allowing the spacing members formed between the vertical bars of the main screen to be rotatably inserted into the horizontal bars.

The present invention is characterized in that it includes a bending bushing between a gap holding member and a horizontal bar, the bending bush is inserted into both sides of the gap holding member, and the circumferential surface is formed of a non-metallic material bent in a " The abrasion is prevented and smooth rotation is enabled, and the gap holding member can maintain a constant position without being rotated.

The present invention is characterized by including a reverse rotation opening that is bent in a direction opposite to the main screen at an upper end of a blocking member formed at both ends of the open / close screen, so that the rake pushes the blocking member during reverse rotation of the rake, There is an effect that the blocking member can be opened smoothly even when rotated.

The present invention has an effect of effectively preventing the clogging of the main screen during the reverse rotation of the rake by including a depressed portion formed by being embedded in a radially inward side edge portion supporting the lifting portion of the rake edge.

1 is a front view of a rotary damper according to an embodiment of the present invention;
2 is a side cross-sectional view of a rotary damper according to an embodiment of the present invention.
3 is a block diagram showing the configuration of the control unit of FIG.
FIG. 4 is a view for explaining the operation of the rotary damper by the control unit of FIG.
5 (a) shows a state in which the rake is inserted into the main screen,
5 (b) is a side sectional view of the rake of Fig. 5
6 is a view for explaining the principle of discharge of contaminants by the side edge supporting portion
7 is a front view of the main screen
8 is a front view of the dislocation screen and the open /
9 is a side view of Fig. 8
10 is a reference diagram for explaining the operation of the open / close screen

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a rotary type vibration damper capable of self-cleaning of a buried contaminant according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements, rather than excluding other elements, unless specifically stated otherwise.

1 to 9, a rotary type vibration damper according to an embodiment of the present invention, which is capable of self-removal of a buried impurity, will be described. The rotary type vibration damper includes a waste water treatment device, a water / sewage treatment facility, A main screen 3 installed on the main body 3 to filter contaminants; A damping portion (1) for lifting and discharging the dirt trapped in the main screen (3) to an upper portion; A disposable screen (5) installed on the bottom surface of the main screen (3) and spaced apart from the main screen (3) to filter contaminants passing between the bottom surface and the main screen (3); And an opening and closing screen 7 which is hinged to the upper portion of the electric potential screen 5 and automatically opened and closed according to the movement of the rake 15 and blocks the space between the electric potential screen 5 and the main screen 3 do.

Conventionally, in the conventional rotary damper, the rake rises along the front surface of the main screen and rotates in an infinite orbit, so that the obstacle caught on the main screen is lifted up to be discharged to the outside. However, when the main screen is clogged with dirt, there is a problem that the rake is not caught by the dirt and the rake is damaged or the rake is overloaded. Therefore, in the present invention, when an overload occurs in the driving unit 13, which will be described later, when the main screen 3 is clogged, the rake 15 is rotated in the direction of descending from the front surface of the main screen 3, (3) is removed from the main screen (3). It is also possible to facilitate the removal of the contaminants during the reverse rotation of the rake 15 through the gap holding member 33 and the rising side support portion 152b to be described later and to prevent the rake 15 from being removed through the reverse rotation opening portion 73, So that the opening / closing screen 7 can be opened even during the reverse rotation of the opening / closing screen 7. A detailed description thereof will be described later.

1, the dust removing unit 1 is configured to discharge the contaminants caught in the main screen 3 to the upper side and to be discharged. The dust removing unit 1 is fixedly installed along the main screen on both sides of the main screen 3 A pair of frames 11 and a lifting chain 12 installed on the inner side of the frame 11 and rotated so as to be rotatable around the lifting chain 12, And a control unit 14 for controlling the operation of the driving unit 13. The control unit 14 controls the operation of the driving unit 13. The driving unit 13 includes a rake 15 for raising the lifting chain 12,

The pair of frames 11 are fixed to both sides of the main screen 3 and are formed to have a constant width from the bottom to the top of the main screen 3. The lifting chain 12 is rotatably installed inside the pair of frames 11 and sprockets are formed inside the upper and lower ends of the frame 11 to wind the lifting chain 12 So that the lifting chain 12 can be reciprocated in an endless track.

The lifting chain 12 is wrapped around sprockets formed on the upper and lower portions of the frame 11 and reciprocally rotates along an inner side surface of the frame 11 and the rake 15 is attached to the lifting chain 12 So that the rake 15 is rotated in accordance with the rotation of the lifting chain 12. The lifting chain 12 causes the rake 15 to rotate in the direction of lifting up from the front surface of the main screen 3 and is referred to as the forward rotation direction. In the present invention, the rake 15, which is opposite to the forward rotation, It is also possible to rotate in the direction of descending from the front surface of the screen 3.

The drive unit 13 is configured to rotate the lifting chain 12 and is connected to the lifting chain 12 by a sprocket or a drive shaft so as to transmit the drive force generated from the drive motor 131. The drive unit 13 includes a sprocket, And the detailed description thereof will be omitted. The driving unit 13 includes a driving motor 131 for providing a driving force for rotating the lifting chain 12 and a driving load measuring module 132 for measuring a driving load of the driving motor 131.

The driving motor 131 is configured to provide a driving force for rotating the lifting chain 12 and may be a general motor. The lifting chain 12 is connected to the lifting chain 12 by driving shafts, sprockets, As shown in Fig. In addition, the drive motor 131 is prevented from malfunctioning by measuring the load by the drive load measurement module 132 to prevent overload.

The driving load measuring module 132 measures a driving load applied to the driving motor 131. The driving load measuring module 132 may be a torque sensor for measuring the load of the motor, Device can be applied. The driving load measurement module 132 measures a driving load applied to the driving motor 131 in real time and transmits the measured driving load to the overload detection module 142 of the control unit 14, The overload of the drive motor 131 is detected.

The control unit 14 controls the operation of the driving unit 13 and precisely the driving motor 131. The control unit 14 drives the driving motor 131 so that the rake 15 rotates forward as shown in FIG. An overload detecting module 142 for receiving a driving load value measured by the driving load measuring module 132 in real time and detecting an overload state, A reverse rotation module 143 for operating the drive motor 131 and an overload detection module 142 for detecting an overload when the rake 15 is reversely rotated by the reverse rotation module 143, And an emergency return module 144 for causing the rake 15 to rotate forward by the module 141. [

The forward rotation module 141 is configured to operate the drive motor 131 so that the rake 15 rotates in the positive direction and the rake 15 rotates in a direction in which the rake 15 is lifted from the front surface of the main screen 3. [ (12), and is executed at the start of operation of the damping unit (1).

The overload detection module 142 receives the driving load value measured by the driving load measurement module 132 in real time and determines whether the driving load value is greater than the set driving load value and detects an overload of the driving motor 131 It is determined that the driving motor 131 is overloaded by the obstacle in the main screen 3 when the overload detection is detected by the overload detection module 142, Causing the rake 15 to rotate in the reverse direction.

The reverse rotation module 143 is configured to operate the driving motor 131 such that the rake 15 rotates reversely and the reverse rotation of the rake 15 means that the rake 15 is rotated by the rotation of the main screen 3, In the direction of descending from the front surface. The reverse rotation module 143 is operated when the overload detection module 142 detects an overload of the drive motor 131 so that the main screen 3 is clogged with the rake 15, It is possible to prevent the rake 15 from being broken or the failure of the driving unit 13 to be prevented and to prevent the rake 15 from being damaged by the reverse rotation of the rake 15 to the main screen 3 So that the buried dirt can be removed. The reverse rotation module 143 operates the forward rotation module 141 to continue the normal rotation of the rake 15 after the rake 15 rotates for a predetermined period of time, Even when the main screen 3 is clogged, the normal operation can be continued without any additional operation. In addition, when the overload of the drive motor 131 is detected again by the overload detection module 142 even before the predetermined time has elapsed, the reverse rotation module 143 controls the forward rotation It is possible to prevent breakage and failure due to overload during reverse rotation.

The emergency return module 144 detects the overload of the drive motor 131 by the overload detection module 142 during the reverse rotation of the rake 15 for a predetermined time set by the reverse rotation module 143 The rake 15 is rotated forward again by the forward rotation module 141 to prevent breakage and failure due to overload during reverse rotation even if the set time has not elapsed. Therefore, the rake 15 according to the present invention can automatically repeat the forward rotation and the reverse rotation according to the load applied to the driving motor 131, so that even if the main screen 3 is caught by the obstacle, It is possible to prevent the breakage of the drive unit 13 and the breakdown of the drive unit 13, and to continue the normal operation without any other operation, and to improve the convenience of operation and maintenance and economical efficiency.

The operation of the damping unit 1 by the control unit 14 will now be described with reference to FIG. 4. As shown in FIG. 4 (a), the rake 15, which has risen from the front surface of the main screen 3, The overload detecting module 142 senses the overload of the driving motor 131 and the reverse rotation module 143 is operated so as to stop the overload of the driving motor 131 The rake 15 rotates in a direction in which the rake 15 descends from the front surface of the main screen 3, as shown in Fig. As a result, the rake 15 on the upper side is lowered to hit the dirt trapped in the main screen 3, as shown in Fig. 4 (c), so that it is removed from the main screen 3. If the overload is detected again by the overload detection module 142 before a predetermined time has elapsed even when the contaminant trapped in the main screen 3 is not removed during the reverse rotation, the emergency return module 144 controls the rake 15 The main screen 3 is repeatedly operated by repeating this process until the rake 15 and the driving unit 13 are broken or damaged by repetitively sewing the obstacle in the main screen 3 on the upper and lower sides, So that the normal operation can be continued without any other operation.

The rake 15 is attached to a lifting chain 12 formed on both sides of the main screen 3 and rotates together with the lifting chain 12 so that the space between the main screens 3, And is inserted into the space between the vertical bars 31 and is formed in a width and number corresponding to the space between the vertical bars 31. Therefore, the rake 15 is lifted up from the front surface of the main screen 3 to lift up the obstacles hanging on the front surface of the main screen 3, So that the contaminants can be removed from the main screen 3. 5, the rake 15 includes a rake blade 151 for scraping up the obstacles hanging on the front surface of the main screen 3, and a rake blade 151 formed below the rake blade 151, And a rake support portion 152 for supporting the rake support portion 152.

5A, the rake blade 151 includes an insertion portion 151a inserted between the vertical bars 31, a lifting portion 151b formed on the opposite side of the insertion portion 151a, And the insertion portion 151a is inserted into the vertical bar 31 to scrape off the contaminants caught in the vertical bar 31 and the hoisting portion 151b is scratched by the insertion portion 151a Allow the contamination to rise upwards.

5, the rake blade support portion 152 is formed on the lower side of the rake 15 to support the rake blade 151 and is formed on the lower side of the insertion portion 151a An insertion side support portion 152a, and a lifting side support portion 152b formed below the lifting portion 151b.

Particularly, the lifting side support portion 152b includes a recess portion 152b-1 formed to be rounded inward as shown in FIG. 5 (b). Therefore, when the rake 15 is caught by the obstacle sandwiched between the main screens 3 and reversely rotates, the obstacle caught by the rake 15 descending as shown in Fig. 6 moves along the inclined portion 152b-1 And discharged to the front surface of the main screen 3, so that the removal of the contaminants can be performed more efficiently by the reverse rotation. In the case where the lifting side support portion 152b is vertically formed or formed in a straight line without a portion to be embedded, even if the obstacle caught by the main screen 3 is caught by the rake 15, The inclined portion 152b-1 is formed so as to be embedded in the inner side roundly so that the contaminants impinging on the descending rake 15 are guided along the inclined portion 152b-1 to the side of the main screen 3 To be discharged to the front side.

Preferably, the main screen 3 is formed in a water channel so as to intercept the obstacles and is formed in accordance with the width of the water channel or the wastewater treatment facility. As shown in FIG. 1, It is possible. The frame 11 is formed along the main screen 3 on both sides of the main screen 3 so that the lifting chain 12 is supported on the frame 11 at both sides of the main screen 3 and can be rotated So that the rake 15 can perform endless orbit rotation by reciprocating the front and rear surfaces of the main screen 3. As shown in FIG. 7, the main screen 3 includes a plurality of vertical bars 31 spaced apart from each other in a direction perpendicular to the paper surface. A plurality of horizontal bars (32) connecting the plurality of vertical bars (31) to each other; A spacing member (33) inserted in the horizontal bar (32) and formed between the plurality of vertical bars (31) to maintain a constant interval between the vertical bars (31); And a bending bushing (34) inserted between the gap holding member (33) and the horizontal bar (32).

The vertical bars 31 are spaced apart from each other by a predetermined distance in a direction perpendicular to the paper surface, and are formed to filter the contaminants contained in the water. The plurality of vertical bars 31 are connected to and fixed to each other by the horizontal bar 32. The rake 15 rises up between the vertical bars 31 and the obstacle caught between the vertical bars 31 is lifted upwards And when the contaminants are caught between the vertical bars 31 as described above, the rake 15 is rotated in the reverse direction to remove the contaminants trapped between the vertical bars 31. In addition, a gap holding member 33 inserted in the horizontal bar 32 is formed between the vertical bars 31 to maintain a constant interval between the vertical bars 31.

The horizontal bars 32 are spaced apart from each other in the horizontal direction by a predetermined distance, and the vertical bars 31 are connected and fixed to each other. In order to maintain a constant gap between the vertical bars 31, a spacing member 33 is inserted into the horizontal bar 32 and the gap holding member 33 is fixed by a welding method. However, The gap holding member 33 is rotated in a state where it is inserted into the horizontal bar 32 so that the rising and falling obstacles can pass smoothly without being caught by the gap holding member 33 of the horizontal bar 32 do.

The gap holding member 33 is a cylindrical member formed between the plurality of vertical bars 31 and is inserted into the horizontal bar 32 to maintain a constant distance between the vertical bars 31. [ The gap holding member 33 has a structure that is present in various conventional screens, but is conventionally welded to the horizontal bar 32 and held in a fixed state. However, according to the present invention, the rake 15 can be rotated forward and backward to remove the contaminants trapped between the vertical bars 31, so that the gap holding member 33 inserted into the horizontal bar 32, So that the contaminants can pass through the horizontal bar 32 along the rotating gap retaining member 33 even if the contaminants are caught by the horizontal bar 32. [ In particular, according to the present invention, the rake 15 is lowered from the front surface of the main screen 3 to remove the impurities adhering to the main screen 3. When the rake 15 descends, the obstacle does not catch on the horizontal bar 32, So as to be slid along the gap holding member 33 to be detached from the main screen 3. [ The gap holding member 33 is formed by bending the bushing 34 between both sides of the horizontal bar 32 so that the gap holding member 33 can rotate smoothly .

The bending bushing 34 is inserted between the horizontal bar 32 and the gap holding member 33 to prevent abrasion of the gap holding member 33 which rotates and allows smooth rotation. 7, the circumferential surface of the bending bushing 34 is bent in a "B" shape and is formed on both sides of the gap holding member 33, ) Can be maintained at a constant position without being shifted to one side. The bending bushing 34 may be formed of a non-metallic material such as MC nylon, and is inserted into the horizontal bar 32 in a hollow form.

The disposable screen 5 is installed on the bottom surface of the main screen 3. The disposable screen 5 is formed at a predetermined interval on the front surface of the main screen 3 to filter contaminants passing between the bottom surface and the main screen 3, Can be formed at the same interval as that of the vertical bar 31 of the base 3. The opening and closing screen 7 is hinged to the upper portion of the electric potential screen 5 and the opening and closing screen 7 is opened and closed according to the rotation of the rake 15, So that it can be more efficiently blocked.

The opening and closing screen 7 is hinged to the upper portion of the electric potential screen 5 and is automatically opened and closed in accordance with the rotation of the rake 15 and blocks the space between the electric potential screen 5 and the main screen 3 A blocking member 71 hinged to the upper portion of the electric potential screen 5 as shown in Figs. 8 to 9 and a blocking member 71 formed between the electric potential screen 5 and the blocking member 71, An elastic member 72 for pulling the member 71 toward the main screen side and a reverse rotation opening 73 formed by bending the upper end of the blocking member 71 to the opposite side of the main screen.

The blocking member 71 is hinged to the upper portion of the opening and closing screen 7 and blocks the space between the potential screen 5 and the main screen 3. The blocking member 71 is provided with a potential screen 5 is connected to the main screen 3 so that the blocking member 71 can approach the main screen 3 as much as possible and the rake 15 can freely rotate through the blocking member 71 So that the blocking member 71 can maintain the state close to the main screen 3. The blocking member 71 formed at both ends of the blocking member 71 has the reverse rotation opening 73 formed at its upper end so that the blocking member 71 To be opened.

The elastic member 72 is an elastic member formed to connect the electric potential screen 5 and the blocking member 71. The elastic member 72 may be formed of a tension spring and the blocking member 71 may be connected to the main screen 3, So that the blocking member 71 is as close as possible to the main screen 3 and the rake 15 can be rotated freely.

The reverse rotation opening portion 73 is formed at an upper end of the blocking member 71, preferably at an upper end of a blocking member 71 formed at both ends of the blocking member 71, And the rake 15 pushes the reverse rotation opening portion 73 when the rake 15 is rotated backward so that the blocking member 71 can be opened. Therefore, the blocking member 71 can be opened or closed irrespective of the normal rotation and the reverse rotation of the rake 15, and can maintain the state close to the main screen 3.

The operation of the opening and closing screen 7 will be described with reference to FIG. 10. As shown in FIG. 10 (a), when the rake 15 is rotated in the direction of ascending along the front surface of the main screen 3 The blocking member 71 is caught by the rake 15 and rotates in the direction of the arrow and is opened. After the rake 15 has passed, the blocking member 71 is pulled by the elastic member 72 to be close to the main screen 3 . 10 (b), when the rake 15 is rotated in the reverse direction along the front surface of the main screen 3, the rake 15 is rotated in the reverse rotation opening 73 So that the blocking member 71 is rotated in the direction of the arrow and is opened. After the rake 15 has passed, the blocking member 71 is pulled by the elastic member 72 to be close to the main screen 3 again. Therefore, in the present invention, the blocking member 71 can be opened even during the reverse rotation by the reverse rotation opening portion 73, so that the reverse rotation of the rake 15 is smoothly performed, The object of the present invention can be achieved.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Should be interpreted as falling within the scope of.

1:
11: Frame 12: Lifting chain
13: driving part 131: driving motor 132: driving load measuring module
14: control unit 141: forward rotation module 142: overload detection module
143: Reverse rotation module 144: Emergency return module
15: rake 151: rake blade 151a: inserting portion 151b:
152: rake blade portion 152a:
152b: a raised side edge portion 152b-1:
3: Main screen
31: vertical bar 32: horizontal bar 33:
34: Bending bushing
5: Dislocation screen
7: opening and closing screen
71: blocking member 72: elastic member 73: reverse rotation opening

Claims (8)

A main screen installed on a water channel of sewage, wastewater, and sewage treatment facilities or a rainwater drainage pump station to filter out contaminants; A damping portion for lifting up and discharging the dirt trapped on the main screen; A disposable screen installed at a bottom surface of the main screen and spaced apart from the main screen to filter contaminants passing between the bottom surface and the main screen; And an open / close screen that is hinged to an upper portion of the electric potential screen to be automatically opened and closed according to the rotation of the rake and blocks a space between the electric potential screen and the main screen,
The crushing portion includes a pair of frames fixedly installed along the screen on both sides of the main screen, a lifting chain provided on the inner side of the frame and rotated, and a clogging portion attached to the lifting chain, And a control unit for controlling the operation of the driving unit. The control unit controls the operation of the driving unit,
Wherein the control unit measures the driving load of the driving unit, reversely rotates the lifting chain when an overload occurs over a predetermined reference level,
The main screen includes a plurality of vertical bars formed at regular intervals in a direction perpendicular to the paper surface; A plurality of horizontal bars connecting the plurality of vertical bars to each other; A gap holding member inserted in the horizontal bar and formed between the plurality of vertical bars to maintain a constant gap between the vertical bars; And a bending bush inserted between the gap holding member and the horizontal bar,
Wherein the gap holding member is rotatably inserted into the horizontal bar,
The bending bush is inserted into both sides of the gap holding member and is formed of a non-metallic material having a circumferential surface bent in an '
Wherein the opening / closing screen comprises: a blocking member hinged to the upper portion of the electric potential screen; an elastic member formed between the electric potential screen and the blocking member to pull the blocking member toward the main screen; And a reverse rotation part formed by being bent toward the opposite side,
The reverse rotation opening portion allows the side edge of the rake to come into contact with the rake and rotate to the opposite side of the main screen, thereby opening and closing the opening and closing screen without damaging the reverse rotation opening and the rake, even during the reverse rotation of the rake Features a rotary damper. 2. The apparatus of claim 1, wherein the driving unit
A driving motor connected to the lifting chain to provide driving force for rotating the lifting chain; and a driving load measuring module for measuring a driving load of the driving motor,
Wherein,
An overload detection module for comparing the driving load value of the driving motor measured by the driving load measurement module with a set value to determine an overload; And a reverse rotation module for rotating the lifting chain such that the rake is lowered from the front surface of the main screen when an overload of the driving motor is detected by the overload detection module. 3. The method of claim 2, wherein the reverse rotation module
So that the rake is caused to rise along the front surface of the main screen by the forward rotation module automatically after the lap is reversed for the set time. 4. The apparatus of claim 3, wherein the control unit
When the overload of the drive motor is detected by the overload detection module even after a predetermined time has elapsed after the operation of the reverse rotation module, the forward rotation module is operated to raise the rake along the front surface of the main screen Wherein the first and second shields comprise a module. delete delete delete delete

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