KR102557086B1 - Scraper using rake having weight sensor - Google Patents

Abstract

Disclosed is an invention for a damper having a rake for detecting the weight of impurities. The disclosed damper having a rake for detecting the weight of impurities is: a guide rail provided on the inside of the edge parallel to each other in the vertical direction of the frame, a chain that rotates infinitely along each of the guide rails, an opposing guide rail, or a screen fixed to the frame to filter out the impurities floating along with the fluid, a screen provided to be connected to a pair of chains and moved in the same direction as the chain that is forcibly rotated infinitely, and a rake provided on the rake and caught on the screen It is characterized in that it includes a load sensing unit that directly detects a load applied to the rake that draws up water, and a control unit that controls whether or not the driving motor is operated through a load value range of the rake detected by the load sensing unit.

Description

Dust removal machine equipped with a rake for detecting the weight of impurities {SCRAPER USING RAKE HAVING WEIGHT SENSOR}

The present invention relates to a damper having a rake for detecting the weight of impurities, and more particularly, by including a load sensing unit having a load gauge on the rake that scrapes up impurities caught on the screen, when the transfer of the rake is stopped momentarily or for a certain period of time or at a low speed due to impurities being caught on the screen, an excessive load is applied to a drive motor operated to feed the rake in a short time or in real time. As a result, a chain or sprocket and a shear pin connecting the sprocket and the drive motor are detected It relates to a damper having a rake for detecting the weight of an impurity to prevent breakage of a share pin.

In general, a damper is a device that is installed in various open channels such as drainage pumping stations, water intake stations, sewage treatment plants, and waterways for relations, and removes impurities contained in water streams by lifting them to the upper part of the waterways.

A general dust collector has a frame installed on the wall of the waterway, guide rails installed on both sides of the frame, a screen installed between the guide rails and installed at an angle to the floor at an angle to filter out impurities floating along with the water flow, and having a plurality of screen bars, a potential screen installed at the front bottom of the screen to filter out impurities passing between the screen and the bottom, and a rake installed at both left and right ends of the screen to remove impurities between the screen and the potential screen. It consists of a drive motor that drives the chain by the guide rail guide to continuously rotate on the screen, and an apron installed on the upper side of the screen for smooth rotation of the rake rotated by the chain and perfect removal of impurities.

Such a damper allows impurities smaller than the bar spacing of the screen to escape from the back of the screen with the water flow, and traps impurities larger than the bar spacing of the screen on the front of the screen. Then, the impurity caught on the front of the screen drives the drive motor installed on the upper part to rotate the sprocket connected to the drive motor and a separate chain.

In particular, the rake-equipped chain continuously rotates on both sides of the screen to remove the impurities caught on the front surface of the screen, and the impurities filtered by the screen and moved upward by the rake move to the top of the screen according to the drive of the continuously rotating chain, move along the bent surface formed in the apron, and are discharged to the outside through a separate discharge conveyor installed on the rear surface of the screen.

As related technologies, Korean Utility Model Registration No. 20-0310478 and Korean Utility Model Registration No. 20-031047 have been proposed.

The above technical configuration is a background art for helping understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

Existing dust suppressors have a problem in that when impurities are excessively caught on the screen, the shear pin provided in the drive motor is cut by overload as the rake cannot lift the impurities on the screen even if the driving force of the drive motor is received.

In particular, the existing damper is configured to detect the load of the rake due to impurities by having a load cell on a sprocket that directly receives the driving force of the driving motor. By not detecting the load of the rake in real time by the load cell provided on the sprocket, there is a problem in that the shear pin is cut.

Therefore, there is a need to improve this.

The present invention has been devised to improve the above problems, by including a load sensing unit having a load gauge on a rake that scrapes up impurities caught on the screen, when the transfer of the rake is stopped instantaneously or for a certain period of time or at low speed due to the impurity being caught on the screen, an excessive load is applied to the drive motor operated to transfer the rake infinitely. As it detects in a short time or in real time, a chain or sprocket and a shear pin connecting the sprocket and the drive motor, etc. An object of the present invention is to provide a damper having a rake for detecting the weight of an impurity to prevent damage to the barrel.

The damper having a rake for detecting the weight of impurities according to the present invention includes: a frame that is open to both sides along the flow direction of fluid and allows fluid to pass therethrough; guide rails respectively provided on the inside of edges parallel to each other in the vertical direction of the frame; Chains that rotate infinitely along each of the guide rails; a screen fixedly installed to the opposing guide rail or the frame to filter impurities floating along with the fluid; a plurality of sprockets rotatably provided on edges parallel to each other in the vertical direction of the frame and guiding infinite rotation by winding the corresponding chain; a driving motor that transmits rotational force to at least one of the sprockets; a rake provided to be connected to the pair of chains, moved in the same direction as the chains, and lifting impurities caught on the screen; a load detecting unit provided in the rake and directly detecting a load applied to the rake that lifts impurities caught on the screen; and a control unit controlling whether to operate the driving motor through a load value range of the rake detected by the load sensing unit.

The rake includes a supporter connected and fixed to the chain corresponding to both sides along the axial direction; a scraper connected to the supporter so as to be supported and lifting up impurities caught on the screen; and a cover detachably provided to the supporter.

The load sensing unit may include a casing fixed to the supporter or the cover; a sensing pin provided to be able to enter and exit the casing from the front; a fixing pad connected to the sensing pin and fixed to the scraper; and a load cell provided inside the casing and detecting a load value applied to the scraper by receiving a pressurized load transmitted to the fixing pad through the sensing pin.

The supporter and the cover are provided over corresponding portions of the pair of side-by-side chains, the casing is disposed along the axial direction on the supporter or the cover, and the sensing pin and the load cell correspond to the casing. It is characterized in that it is provided.

As described above, the damper having a rake for detecting the weight of impurities according to the present invention, unlike the prior art, has a load sensing unit having a load gauge on the rake that scrapes up the impurity caught on the screen, and the transfer of the rake is stopped momentarily or for a certain period of time due to the impurity being caught on the screen or in a low speed state. By detecting in a short time or real time that an excessive load is applied to the drive motor operated to endlessly transfer the rake, the chain or sprocket and the sprocket and the drive motor are connected. Damage to the power transmission system such as a shear pin can be prevented.

1 is a side view of a damper having a rake for detecting the weight of impurities according to an embodiment of the present invention.
2 is a front view of a damper having a rake for detecting the weight of impurities according to an embodiment of the present invention.
3 is an enlarged cross-sectional view showing a connection between a drive motor and a sprocket of a damper having a rake for detecting the weight of impurities according to an embodiment of the present invention.
4 is an enlarged plan view of a rake for detecting the weight of impurities according to an embodiment of the present invention.
5 is an enlarged side view of a state in which a load sensing unit is provided in a rake according to an embodiment of the present invention.
6 is a perspective view of a rake according to an embodiment of the present invention.
7 is a bottom perspective view of a rake according to an embodiment of the present invention.
8 is an exploded perspective view of a main part of a rake according to an embodiment of the present invention.
9 is a cross-sectional view of a main part of a rake according to an embodiment of the present invention.

Hereinafter, an embodiment of a damper having a rake for sensing the weight of impurities according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, definitions of these terms will have to be made based on the content throughout this specification.

1 is a side view of a damper having a rake for detecting the weight of impurities according to an embodiment of the present invention, FIG. 2 is a front view of the damper having a rake for detecting the weight of impurities according to an embodiment of the present invention, and FIG.

4 is an enlarged plan view of a rake for detecting the weight of impurities according to an embodiment of the present invention, and FIG. 5 is an enlarged side view of a state in which a load sensing unit is provided in the rake according to an embodiment of the present invention.

6 is a perspective view of a rake according to an embodiment of the present invention, Figure 7 is a bottom perspective view of a rake according to an embodiment of the present invention, Figure 8 is an exploded perspective view of a main part of a rake according to an embodiment of the present invention, Figure 9 is a main part cross-sectional view of a rake according to an embodiment of the present invention.

1 to 9, the damper 10 having a rake 100 for detecting the weight of impurities according to an embodiment of the present invention includes a frame 20, a guide rail 30, a chain 40, a screen 50, a sprocket 60, a driving motor 70, a rake 100, a load sensing unit 200, and a control unit 300.

The frame 20 forms the outer shape of the damper 10 according to the present invention, and is installed on the inside of the euro block built on both banks of the river. In particular, the flow block is assumed to be a weir provided along both sides of a river or waterway.

And, the frame 20 is installed at a set distance from the bottom surface of the river. This is to prevent the scraper 120 of the rake 100, which is installed to rotate infinitely inside the frame 20, from being caught or interfered with the bottom surface of the river.

The frame 20 can be deformed into various shapes, but for convenience, it is shown in a substantially rectangular frame shape. Of course, the frame 20 may be made of various materials.

Guide rails 30 are installed inside both sides of the frame 20, respectively. At this time, 'both sides' means edges parallel to each other in the vertical direction, particularly, edges that are supported in close proximity to or in contact with each of the euro blocks. The guide rail 30 may be formed in various ways.

The chain 40 is guided to each of the guide rails 30 so as to be infinitely rotatable.

In addition, the screen 50 is fixed to the edge of the opposing guide rail 30 or the opposing frame 20 to filter impurities floating along with the fluid. At this time, the screen 50 may be formed in various ways, such as arranging screen bars in a grid.

A plurality of sprockets 60 are rotatably provided at the edges parallel to the vertical direction of the frame 20, respectively, and guide the infinite rotation by winding the corresponding chain 40. That is, the sprockets 60 are provided one by one to guide each chain 40 to an infinite rotation, and are rotatably installed in the frame 20 .

The drive motor 70 transmits rotational force to at least one sprocket 60 .

And, the rake 100 is provided to be connected to a pair of parallel chains 40, moves in the same direction as the chain 40, and serves to lift impurities caught on the screen 50.

That is, when the driving motor 70 is driven, the corresponding sprocket 60 is forcibly rotated, so that the chain 40 and the rake 100 move infinitely. Accordingly, the rake 100 repeatedly lifts the impurities caught on the screen 50.

Therefore, in power transmission, the driving force of the driving motor 70 is sequentially transmitted to the sprocket 60, the chain 40, and the rake 100.

Meanwhile, the load detection unit 200 is provided in the rake 100 and serves to directly detect a load applied to the rake 100 that lifts impurities caught on the screen 50 .

Also, the control unit 300 controls whether the driving motor 70 is operated through the load value range of the rake 100 detected by the load sensing unit 200 .

In particular, as the load sensing unit 200 directly detects the load applied to the rake 100, the load value (load range) acting on the rake 100 is transmitted to the controller 300 in real time and in a short time.

Upon detecting that an excessive load greater than a set value is applied to the rake 100, the control unit 300 immediately generates a signal for stopping the operation of the driving motor 70.

As a result, the shear pin 72 provided at the drive connection portion between the drive motor 70 and the sprocket 60 is protected.

In detail, the drive motor 70 is equipped with a drive shaft 73, a drive plate 74 is fixed to the drive shaft 73, and a driven plate 76 is connected to the sprocket 60 for power transmission.

And, the driving plate 74 forms a first through hole 75 in a direction parallel to the driving shaft 73 . In addition, the driven plate 76 interlocked with the driving plate 74 forms a second through hole 65 at a portion corresponding to the first through hole 75 .

In addition, shear pins 72 are seated through the first through hole 75 and the second through hole 65 .

At this time, power is transmitted to the driving plate 74 and the driven plate 76 by the silver shear pin 72, and when an overload occurs in the sprocket 60, the shear pin 72 may be cut.

To prevent this, a load sensing unit 200 is provided in the rake 100 .

Meanwhile, the rake 100 includes a supporter 110, a scraper 120, a cover 130, and a rib 140.

Both sides of the supporter 110 are connected and fixed to the corresponding chain 40 along the axial direction. At this time, the supporter 110 may be connected to the chain 40 in various ways such as pin coupling. Also, the supporter 110 can be deformed into various shapes. In particular, the supporter 110 is made of a rigid material to firmly support the scraper 120.

In addition, the scraper 120 is disposed to be spaced apart from the supporter 110 by a set interval along the axial direction of the supporter 110, and moves from the lower front side of the screen 50 to the upper direction together with the supporter 110. It serves to scrape up impurities caught on the screen 50.

The cover 130 is detachably coupled to the supporter 110 . The cover 130 is detachably coupled to the supporter 110 by a coupling member 132 . The coupling member 132 can be applied in various ways such as bolts or screws.

At this time, the cover 130 includes an upper plate member 133 and a lower extension member 135 so as to be stably supported by the supporter 110 .

The upper plate member 133 is detachably coupled to the upper side of the supporter 110 in the movement direction of the supporter 110 . At this time, the upper plate member 133 is formed in a flat plate shape.

Also, the lower extension member 135 extends downward from the upper plate member 133 and is detachably coupled to the supporter 110 in a state in contact with the front side surface of the supporter 110 .

Of course, the upper plate member 133 and the lower extension member 135 can be deformed into various shapes.

In addition, the ribs 140 are provided to increase the bearing capacity of the cover 130 with respect to the supporter 110 or the bearing capacity of the upper plate member 133 with respect to the lower extension member 135 .

For convenience, the rib 140 is shown as having a plate shape connecting the lower extension member 135 and the upper plate member 133. At this time, one side of the rib 140 is integrally connected to the lower extension member 135 and the other side is integrally connected to the upper plate member 133.

Meanwhile, the load sensing unit 200 includes a casing 210 , a sensing pin 220 , a fixing pad 230 and a load gauge 240 .

The casing 210 is fixed to the supporter 110 or the cover 130 . In this case, the casing 210 may be integrally manufactured with the supporter 110 or the cover 130 or may be detachably coupled.

For convenience, the casing 210 is stably supported on the upper side of the top plate member 133 of the cover 130 and is detachably coupled to the top plate member 133 .

In this case, the casing 210 may be provided throughout the supporter 110 along the axial direction, but it is assumed that the casing 210 is provided at both edges of the supporter 110 along the axial direction.

The sensing pins 220 are provided to be able to enter and exit from the front side of each of the casings 210 . To this end, the casing 210 passes through an opening hole 212 opened in the direction of the scraper 120 . In particular, since one side (lower side) of the scraper 120 scrapes up the impurity of the screen 50, the sensing pin 220 connected to the scraper 120 is subjected to an external force in an inclined direction with respect to the axial direction. Thus, although not shown, the opening hole 212 has a sleeve on the inner surface, and the sensing pin 220 is axially inserted into the sleeve and guided to move in the axial direction, and damage or breakage of the casing 210 can be prevented.

At this time, the sensing pin 220 is axially inserted into the opening hole 212 so as not to be completely separated from the outside of the casing 210 .

In addition, the fixing pad 230 connects and fixes the end of the sensing pin 220 exposed to the outside of the casing 210, and is detachably coupled to the scraper 120.

So that the fixing pad 230 can be assembled to the scraper 120 in place, the scraper 120 has a positioning groove 124 recessed on its lower side, and the fixing pad 230 is seated in the positioning groove 124. Then, the fastening member 122 detachably couples each of the scrapers 120 to the fixing pad 230.

In particular, the supporter 110 and the cover 130 are provided in the form of a continuous beam over corresponding portions of the pair of parallel chains 40, and the casing 210 is formed in a continuous hexahedral shape along the axial direction of the upper plate member 133 of the cover 130.

In addition, the load gauge 240 is provided inside the casing 210 and receives the pressure load transmitted to the fixed pad 230 through the sensing pin 220 to detect the load value applied to the scraper 120. The load meter 240 can be applied to various meter reading systems such as sensors or load cells that detect the load value applied to the scraper 120 through the force pressed by the sensing pin 220.

At this time, it is assumed that the sensing pin 220 and the load cell 240 are spaced apart from each other by a set interval along the axial direction of the casing 210 .

In addition, the control unit 300 generates a signal for stopping the operation of the driving motor 70 when any one of the load values detected from all load gauges 240 provided in one rake 100 exceeds a set value.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: damper 20: frame
30: guide rail 40: chain
50: screen 60: sprocket
70: drive motor 72: shear pin
100: Rake 110: Supporter
120: scraper 122: fastening member
130: cover 132: coupling member
133: upper plate member 135: lower extension member
140: rib 200: load sensing unit
210: casing 212: opening hole
220: detection pin 230: fixed pad
240: load system 300: control unit

Claims (4)

A frame that is open on both sides along the flow direction of the fluid and allows the fluid to pass through; guide rails respectively provided on the inside of edges parallel to each other in the vertical direction of the frame; Chains that rotate infinitely along each of the guide rails; a screen fixedly installed to the opposing guide rail or the frame to filter impurities floating along with the fluid; a rake provided to be connected to the pair of chains, moved in the same direction as the forcibly infinitely rotated chain, and lifting impurities caught on the screen; a load detecting unit provided in the rake and directly detecting a load applied to the rake that lifts impurities caught on the screen; And a control unit for controlling whether or not the driving motor is operated through the load value range of the rake detected by the load sensing unit,
The rake includes a supporter connected and fixed to the chain corresponding to both sides along the axial direction; a scraper connected to the supporter so as to be supported and lifting up impurities caught on the screen; And a cover detachably provided to the supporter,
The load sensing unit may include a casing fixed to the supporter or the cover; a sensing pin provided to be able to enter and exit from the casing; a fixing pad connected to the sensing pin and fixed to the scraper; And a load cell provided inside the casing and detecting a load value applied to the scraper by receiving a pressurized load transmitted to the fixing pad through the sensing pin,
The frame is rotatably provided with a pair of sprockets to guide each of the chains to infinite rotation,
The scraper sinks the positioning groove to guide the fixed position assembly by seating the fixed pad,
When the load meter detects that an excessive load of more than a set value is applied to the scraper, the control unit immediately generates a signal to stop the operation of the drive motor, so that the shear pin provided at the driving connection between the drive motor and the sprocket is protected.
delete delete According to claim 1,
The supporter and the cover are continuously provided over corresponding portions of the pair of parallel chains,
The casing is disposed along the axial direction of the supporter or the cover,
The damper having a rake for detecting the weight of impurities, characterized in that the sensing pin and the load cell are provided in the corresponding casing.

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