JP2009154143A - Scraping apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scraping apparatus capable of eliminating the risk of interference with a dust removing apparatus and with an achieved simplification of a structure. <P>SOLUTION: At a certain height of a position passing through the center of the width of a treatment basin, a guide rail is passed. The guide rail is provided with a machine body linear reciprocable in the longitudinal direction. The machine body is provided with a long linkage member linearly reciprocable in the longitudinal direction with respect to the machine body. Revolving towing strip members connected to the front and rear respective ends of the linkage member alternatively switch the revolving towing direction forwardly and reversely to be reciprocally switchable. In the front and rear positions of the machine body, scraper arms with scrapers vertically rotating around the rotary shaft laterally are provided, respectively. The linkage member is reciprocally switched, thereby one of the scraper arms with scrapers is in a lowered scraping state to scrape a deposite in the direction of a pit, and the other scraper is in a higher non-scraping state to be returned in the direction of an anti-pit. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a scraping device which is installed in a processing pond such as a sand basin or a sedimentation basin so as to scrape a sediment deposited in a concave pit.

For example, in a sand basin, bar screens with a lifting function are installed on the upstream and downstream sides, and concave pits are provided between them, and the sediment that settles on the bottom of the pond is raked up in the pit direction. I am trying to process it by pumping up.
By the way, there are various types of scraping devices for scraping in the pit direction. The present applicant is provided with a guide rail at a high position in the center of the pond width, and equipped with a machine body that moves forward and backward along the guide rail. At the same time, the aircraft is provided with an arm that rotates up and down around the horizontal rotation axis, and scrapes are scraped in the pit direction by a scraper at the tip of the arm.

By the way, in the sand basin where the bar screen is installed as an existing object before and after the upstream and downstream sides as described above, a scraping device may be additionally installed as a new device between the bar screens. In this case, it may be possible to arrange the pits in the vicinity of the bar screen on the upstream side so that the scraping device moves forward and backward. However, if arranged in this way, the scratching device may interfere with the bar screen. There is.
The present invention has been made in view of the above, and it is an object of the present invention to provide a scraping device that eliminates the possibility of interference and achieves a simplified structure.

  In order to solve the above-mentioned problem, the invention according to claim 1 is provided with a concave pit in the longitudinal direction of the bottom of a treatment pond such as a sand basin / sedimentation basin, It is a scraping device for scraping in, and a guide rail is passed through a fixed height at a position passing through the center of the width of the treatment pond, and the guide rail can be moved forward and backward in a straight line. The aircraft is provided with a long interlocking member that can be moved back and forth linearly back and forth with respect to the aircraft, and the revolving tow strip connected to the front and rear ends of the interlocking member By switching the pulling direction alternately forward and backward, it is possible to switch forward and backward, and at the front and rear positions of the aircraft, a scraper arm with a scraper that rotates up and down around a horizontal rotation axis is provided, and the interlocking member moves forward and backward With these scrapers by switching One of the scraper arms is in a scraped state that is lowered and scrapes deposits in the direction of the pit, while the other scraper arm with a scraper is in a raised and non-scratched state in the direction of the anti-pit. It is configured to be returned.

According to the present invention, the guide rail is passed through the fixed height of the position passing through the center of the width of the treatment pond, and the guide rail is provided with the machine body that can move forward and backward in a straight line. The airframe is provided with a long interlocking member that can move forward and backward linearly with respect to the airframe, and the orbiting tow strips connected to the front and rear ends of the interlocking member alternate the forward and reverse directions. By switching, it is possible to switch between advancing and retracting, and at the front and rear positions of the aircraft, a scraper arm with a scraper that rotates up and down around a horizontal rotation shaft is provided, and these interlocking members are switched to advance and retract. One of the scraper arms with a scraper is in a low scraped state and scrapes the deposits in the direction of the pit, while the other scraper arm with a scraper is in a raised non-scratched state and is anti-pit Since, characterized in that it is configured to be returned to the direction, it is possible to provide a raking device which achieves the simplification of the structure with eliminating the risk of the interference.
In addition, since it is configured as described above, scratching is possible in each of the reciprocating motion of the device, and the number of scratching is doubled. Scratching ability will be obtained.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, each proposed example included in each embodiment described here is assumed to be applied to other embodiments.
1 to 4 show one embodiment of a scraping device according to the present invention, FIGS. 1 and 2 are side views of the scraping device, FIG. 3 is a plan view of FIG. 1, and FIG. FIG. 4 is an enlarged sectional view taken along line IV-IV. FIG. 1 shows a scraped state toward the upstream side A, and FIG. 2 shows a scraped state toward the downstream side B.

  In these drawings, reference numeral 1 denotes a sand basin, and the sand basin 1 is provided to allow wastewater and rainwater to flow through a gate (not shown) and remove a large amount of sand and garbage contained therein. The water channel has a side wall 2, 2 and a bottom wall 3 facing each other in the left-right width direction. In the sand basin 1, the A side is the upstream side and the B side is the downstream side in FIGS. 1 to 3, and the bar screen is installed as an existing object in the vicinity of the symbols A and B. In the following description, the A side is the front side and the B side is the rear side. In FIG. 1 and FIG. 2, one device is divided and displayed in the upper and lower stages, but those displayed in the upper and lower stages are continuous with each other.

5 is a pit and has a concave shape with an inverted quadrangular pyramid, and the pit 5 is arranged at an intermediate (intermediate) position between A and B. In this pit 5, a pair of suction pumps 6 are provided on the left and right sides, and the suction pipe 7 that communicates with the suction pump 7 and extends vertically upward does not interfere with the advance and retreat of the scraping device as shown in the plan view of FIG. It is said that.
Reference numeral 4 denotes a haunch portion (slanted wall) for guiding sand toward the center, and is provided only in the portion A on the upstream side of the pit 5 in the bottom wall 3, but the portion on the B side. May also be provided.
In this case, since the driving wheel 24 is driven to rotate in the clockwise direction indicated by the arrow X in FIG. The interlocking member 19 is pulled to the front side. As a result, the interlocking member 19 moves forward, but hits the stopper 28 on the front side of the two projecting front and rear portions on the machine body 14 side, and is stopped at a certain point. At that time, the airframe 14 obtains a forward force and is pulled as indicated by an arrow F in FIG.
This towing is continued until the subsequent scraper 36 comes before the pit 5.

  By detecting the time point with a limit switch, next, the drive wheel 24 is controlled to reversely rotate Y as shown in FIG. The upper portion of the orbiting tow strip 22 is driven in the direction of the arrow Y, whereby the interlocking member 19 is driven rearward and stops when the anchor bracket 20 hits the stopper 28 on the rear side.

  Meanwhile, the interlocking member 19 moves rearward via the anchor bracket 20 on the rear side, and the interlocking arm 31 is rotated and interlocked clockwise in FIG. 2 via the arm interlocking member 32, and the scraper arm 34 is lifted and the scraper 36 is moved. It is lifted and fixed in its non-scratched state. On the front side, the portion passing from the lower circumference to the upper circumference of the orbiting tow strip 22 is the loose side, so that the interlocking member 19 is allowed to move backward, and as a result, the scraper arm 34 is allowed to freely descend. At the same time, the deposit S is scraped toward the rear pit 5 while maintaining a constant scratching force as described above. As described above, this scraping can be escaped when the resistance exceeds a certain level. R indicates the direction of movement of the scraping device to the rear.

  The side view which shows one Embodiment of this invention as the scraping state to the front.   The side view which shows one Embodiment of this invention as a scraping state to back.   FIG. 2 is a cross-sectional plan view of FIG. 1.   FIG. 4 is a sectional view taken along line IV-IV in FIG. 1.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Sand basin 3 ... Bottom wall 5 ... Pit 9 ... Guide rail 14 ... Airframe 15 ... Traveling roller 20 ... Anchor bracket 21 ... Anchor 22 ... Circumferential traction material 24 ... Drive wheel 28 ... Stopper 29 ... Sideways rotating shaft 31 ... Interlocking Arm 32 ... Arm interlocking material 34 ... Scraper arm 36 ... Scraper S ... Sediment.

Claims (1)

  A scraping device that has a concave pit in the longitudinal direction of the bottom of a processing pond such as a sand basin or a settling pond, and scrapes the sediment that settles on the bottom of the pond to scrape it into the pit. A guide rail is passed through a fixed height at a position passing through the center of the width, and the guide rail is provided with a machine body that can be moved forward and backward in a straight line. A long and slender interlocking member that can move forward and backward in a straight line is provided, and the revolving tow strip connected to the front and rear ends of the reciprocating member can be switched forward and backward by alternately switching the revolving tow direction. A scraper arm with a scraper that rotates up and down around a horizontal rotation shaft is provided at the front and rear position of the aircraft, and one of these scraper arms with a scraper is switched by moving the interlocking member forward and backward. Low scraping The scraper arm with the other scraper is configured to return to the anti-pit direction in a raised non-scratched state while scraping the deposit in the direction of the pit. Scraping device to do.

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