JP2559811Y2 - Scum removal device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a scum removing device. [Technical Background] In a sedimentation pond or the like, a large amount of scum accumulates on the water surface, and it is necessary to remove such scum properly. As a countermeasure, various scum processing devices have been considered, but as a general one, a tubular trough, also called a scum schema, is rotated manually or electrically to scum through an inlet on the front surface thereof. There is one that is guided inside with water to eliminate. According to this method, unless the inflow amount is controlled properly by manual or electric means, the inflow amount becomes excessively large and only water is eliminated, but the essential scum is not eliminated. Therefore, the present applicant has previously proposed a scum removal device using flight motion. In this device, a damming member which is a float is provided in a trough, and the damming member is pushed down through a narai arm interlocking with a flight and a transmission mechanism responsive thereto, and the weight of the narai arm and the buoyancy of the damming member itself. To return to the surface of the water. However, the narai arm of the device is composed of a front warp-shaped front part, a rear warped-shaped rear part, and a part connecting between them, and the current narai arm is formed of one piece, and as a result, It was necessary to design and manufacture the narai arm unique to the sedimentation basin in accordance with the scum inflow time of the sedimentation basin. Therefore, there were many losses in the design and production. [Purpose of the invention] The purpose of this invention is to solve such a problem. The purpose of the invention is not only to simplify the design and production by sharing parts, but also to It is an object of the present invention to set a suitable scum inflow time zone. [Constitution of the Invention] The present invention has been made in order to solve the above-mentioned object. In the present invention, a trough-shaped trough is provided with a lower inlet formed on one side of the trough so as to be below the surface of the sedimentation basin. The trough is provided fixedly in the pond, and a dam member is attached to the trough so as to rise and fall with respect to the surface of the water, and in the sedimentation pond, a narai arm is provided via a fulcrum so as to swing up and down. Is supported, and the narai arm is configured to be lifted by a roller provided to move in the sedimentation basin to push down the damming member via a transmission mechanism, and the damming member is In the scum removing device configured to be capable of returning by obtaining a lifting force by a return unit such as the weight of the narai arm, the narai arm is configured to be adjustable in length in the forward and backward directions. And said that you are. [Embodiment] The present invention will be described below with reference to the illustrated embodiment. 1 to 3 show one embodiment of the present invention, which is directed to a circular sedimentation basin. Trough 1
Is a gutter-like shape having a square cross section and an upper opening, and one end in the longitudinal direction is closed. The broken line in FIG. 1 is the side wall (actually an arc-shaped peripheral wall) A of the pond.
The support base 2 is fixed. The trough 1 is fixed to the mount 2 so as to be vertically above and below the water surface, and also serves as a support for the arms 5 and 8 to be described below in addition to the trough 1. The longitudinal direction of the trough 1 is directed in the radial direction of the settling basin. A communication pipe 30 is connected to the bottom of the trough 1 such that one end thereof communicates with the inside of the trough 1. The communicating pipe 30 is configured to be able to flow vertically downward and bend in the horizontal direction so that scum and water can flow out of the pond. The water surface 31 fluctuates between a low level LWL and a high level HWL. A drive shaft and a drive motor (not shown) are provided at the center of the circular settling basin with respect to the water surface 31.
The scum scraping plate 16 is driven to rotate horizontally by these driving forces, and the scraper support base 2 is rotated.
8 is also driven to rotate horizontally. An arm 28 ′ extends in front of the support base 28, and the auxiliary scraper 15, the main scraper 18 and the main
Is hanging down. The spare scraper 15 removes some of the scum raked by the scum scraper 16 to the trough 1.
Side, and at the same time, the greasy scum is also sent to the trough 1 side by the flowing water flow. The main scraper 18 serves to send all remaining scum to the trough 1 side. On the other hand, the front side of the trough 1
The opening (inlet) 32 is set to be lower than the opening. A portion below the opening 32 of the trough 1 is a vertical metal plate, and a U-shaped rubber connection sheet 3 is attached to the lower end of the portion. The upper part of this sheet 3 is 35 degrees from the horizontal surface toward the inside of the trough 1 instead of outside.
It is inclined and rises to a degree. Same sheet 3
Is a band-shaped sheet substantially along the longitudinal direction of the trough 1 and the upper part other than the lower mounting part is elastically deformable up and down. A damming member (float) 4 having a hollow inside and a triangular cross section is attached to the upper end of the sheet 3 so as to move up and down in the trough 1. The damming member 4 is also long like the sheet 3 and is protruded inside so as to move up and down with respect to the water surface 31 by elastic support by the damming member 4. If the damming member 4 is left as it is, water may enter the trough 1 from the gaps on both sides. Therefore, a bellows 20 is provided between the damming member 4 side and the trough 1 side. , To prevent intrusion. The blocking member 4 substantially follows the movement of the swing connection arm (one of the transmission mechanisms) 5. That is, the swing connection arm 5 is an arm (one of transmission mechanisms) 33 extending forward from the support base 2.
Are supported rotatably up and down by a horizontal axis of rotation shaft fulcrum 6 provided at the bottom of the shaft. The swing connection arm 5 has an arm portion extending forward from one end of a shaft of the fulcrum 6, and a weight for balance adjustment (one of return means) is provided at the tip of the arm portion.
10 is provided. On the other hand, the swing connection arm 5 has a fulcrum 6
It extends two lines backward from both ends of the shaft. At the rear end of the swing connection arm 5, a water level following float (one of the return means) 7 having a large diameter and an inverted conical shape at the top is suspended. The float 7 moves up and down together with the swing connection arm 5. In the middle of the extension of the swing connection arm 5, an adjusting bolt 13 is attached so that the upper end is rotatable. The adjusting bolt 13 is passed through two holes formed in the damming member 4 and the lower end thereof. Is provided with a nut 34 so as to be vertically adjustable. A support arm 9 is provided on the lower rear surface of the support base 2, and the support arm 8 is supported via the support point 9 so as to be able to swing up and down. The narai arm 8 extends forward and shorter than it. As a result, since the narai arm 8 is elongated to one side, its own weight helps the arm 8 to return downward, and the support rod 23 also assists the return by its own weight. Incidentally, the narai arm 8 has a cam 35 at the front portion of the front warping shape and a rear portion which is elongated by about 45 degrees in the rear warping shape. The front and rear portions are horizontal. An insertion guide 21 is formed at a front portion of the horizontal portion of the parallel arm 8,
The guide 21 has a portion extending horizontally from the rear end of the cam 35, which can be adjusted back and forth, and can be fixed and fixed at an appropriate position by a fixing bracket 22. In addition, the auxiliary stabilization float 11 is attached to the front end of the cam 35 so as to move up and down between the cam 35 and the water surface 31.
The rear end of the portion extending rearward of the narai arm 8 forms a horizontal support base 29. A hole is formed in the support base 29, and a bolt 36 of the water level following float 7 is passed through the hole. A nut is provided at the lower end of the bolt 36 so as to be vertically located. A guide guide 19 is horizontally fixed on the upper surface of the support base 2 so as to be on the left and right, and a cover 37 that covers the bellows 20 from above to prevent aging due to light is provided on the guide 19. ing. Also, 2
Reference numeral 3 denotes a support rod, and the support rod 23 extends upward from a front portion of the narai arm 8, has a large diameter at a lower portion and a small diameter at an upper portion, and has a nut 38 at a slightly lower end at an upper end. A lower limit stopper 24 is provided on the pond side wall A, and the support rod 23 is guided to the stopper 24 and a nut 38 comes into contact with the stopper from above to define the lower limit of the parallel arm 8. The illustrated state shows a state in which the roller 12 in the pond has not yet hit the narai arm 8. The tip of the narai arm 8 is heavy, and the weight of the support rod 23 rests on the support arm 23.
Acts, the support table 29 at the rear end is lifted, and the water level following float 7 is pushed up by the force. As a result, the swing connection arm 5 has its rear portion raised and the bolt 13
The damming member 4 is lifted up through. as a result,
Since the upper end of the blocking member 4 projects beyond the water surface 31, the scum and water in front of the blocking member 4 are blocked. When the water surface 31 moves up and down, the water level following float 7
Also follows it, so that the damming member 4 also moves up and down. When the roller 12 comes into contact with the cam 35, the narai arm 8 is raised with the fulcrum 9 as the center and lowered with the back. By lowering the back, the water level following float 7 and the swing connection arm 4 are forcibly lowered, and the damming member 4 becomes largely submerged below the water surface 31, so that scum and water are drawn into the trough 1. The water is discharged outside the pond through the communication pipe 30. When the roller 12 passes through the cam 35 of the parallel arm 8, a heavy portion of the distal end acts on the parallel arm 8, so that the distal side is lowered and the rear side is raised. Thereby, the water level following float 7
And the swing connection arm 5 also moves up, so that the damming member 4 rises above the water surface 31, and the flow of scum and water is dammed. Since the length of the narai arm 8 is adjustable, depending on the capacity of the sedimentation basin, scum may need to be sucked in over a long period of time, or may be shorter. Even in such a case, the adjustment-type parallel arm 8 can be dealt with only by adjusting the length. When the distal end of the narai arm 8 is raised, the auxiliary stability float 11 is also lifted to reach the water surface 31 and acts to push the scum on the water surface 31 in the trough 1 direction. It also has the ability to break scum. 25 is
A mountain-shaped protrusion provided on the swing connection arm 5; 26
Is a projection provided on the bottom surface of the parallel arm 8.
These projections 25 and 26 are effective when a large scum is to be drawn into the trough 1 by pressing the swinging connection arm 5 or the parallel arm 8 deeper. [Effects of the Invention] As described above, this invention not only simplifies the design and manufacture by sharing parts, but also makes it possible to set a suitable scum inflow time zone for each sedimentation basin.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view showing an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is an enlarged view of a main part of FIG. 1 ... Trough 4 ... Damming member 7, 8, 10, 2
3 ... Return mechanism 5, 13, 23 ... Transmission mechanism 8 ... Narai arm 9 ...
... Narai arm fulcrum 12 ... Roller 21 ... Insertion guide 22 ...
Fixing bracket 31 ... Water surface 32 ... Opening (inlet).

Claims (1)

(57) [Claims for utility model registration] (1) The trough-shaped trough is fixedly provided in the sedimentation basin so that the inlet formed low on one side is below the surface of the sedimentation basin. A dam member is attached to the trough so that it rises and falls with the water surface as a boundary, and a narai arm is supported via a fulcrum in the sedimentation basin so as to swing up and down. The narai arm is configured to be lifted by a roller provided to move in the sedimentation basin and to push down the damming member via a transmission mechanism, and the damming member is configured to reduce the weight of the narai arm and the like. In a scum removing device which is configured to be able to return by obtaining a lifting force by a return means, the scum removing device is characterized in that the length of the parallelism arm is configured to be adjustable back and forth. Apparatus.