JP2544265Y2 - Scum removal device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scum removing device.

[0002]

2. Description of the Related Art FIGS. 8 to 10 show a scum removing device for a circular sedimentation basin proposed by the present applicant. In the circular sedimentation basin, a rotating arm (rake) 100 driven by a motor with a speed reducer (not shown) is provided so as to rotate horizontally below the water surface. The arm 100 is provided with a column 101 on the outer diameter side thereof, and the upper end of the column 101 faces above the water surface 102. At the upper end of the column 101, a scraper 104 is mounted which moves in the direction of the arrow in FIG. This scraper 104
Is configured as a bent member by the back side mounting member 104a and the front side scraper body 104b. An auxiliary scraper 105 is provided at the tip of the scraper 104, and the scum 10 from the scraper 104 side is provided.
It has a function to advance while accumulating along the inner circumference of the pond. Reference numeral 106 denotes a sled-shaped driving means. The driving means 106 is a rod-shaped cam which operates while pressing an interlocking means on the trough 120 side which will be described later. On the other hand, the trough 120 is a trough-shaped square member that is open at the front and upper sides.
It is fixed by a gantry 121. This trough 120
The front opening is lower than the water surface 102, and a shaft 122 is provided in the front opening so as to be rotatable in a horizontal horizontal axis. A weir 123 is provided on this shaft 122 so as to be able to swing up and down so as to float up and down on the water surface. The uplift prevents the scum 103 from being introduced (the state shown in FIG. 10), and the scum 103 is introduced over the scum by sinking. It has become.
The interlocking means includes a second arm 124 attached to an end of the shaft 122, a rod 125, and a first arm 126 supported on another shaft.
The roller 127 is attached to the tip of the. The scum 103... Are gathered by the scraper 104 and travel while being collected at the front of the auxiliary scraper 105.
The scums 103 are moved in the direction of the weir 123 (the direction of the arrow in FIG. 8). The auxiliary scraper 105 is the weir 123
When the vehicle approaches, the driving means 105 presses the roller 127, interlocks the first arm 126, the rod 125, and the second arm 124, and lowers the weir 123 below the water surface via the shaft 122. With this, the scum 103 ...
Is introduced into the trough 120 beyond the weir 123. When the driving means 105 passes over the roller 127, the weir 123 floats and the flow of the scums 103 stops.

[0003]

However, this scum removing device has the following disadvantages. The trough 120 and the weir 123 are installed facing forward so as to face each other in the rotation direction, and the auxiliary scraper 105
A scraper mounting bar 107 fixed and extended on the rotating arm 100 is mounted on a horizontal shaft 109 provided via a stay 108 so as to be rotatable back and forth. The driving means 106 is attached by a holding member 110 attached to the column 101. Further, a guide rail 128 is provided so that the auxiliary scraper 105 can rotate back and forth and escape on the trough 120. As can be seen from such a configuration, the number of components increased, the production was troublesome, and the cost was considerably high. Further, since the trough 120 protrudes largely from the inner periphery of the pond, a long and strong base 121 is required.
This invention has been made to eliminate these disadvantages.

[0004]

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a circular or rectangular sedimentation basin is provided with a rotating arm which rotates around the center of the pond below the surface of the water. Is provided with a scraper that gathers scum floating on the water surface in the outer diameter direction, and a movable type that pushes the gathered scum in the rotating direction at the outer diameter end of the scraper. On the other hand, an auxiliary scraper is provided on the inner periphery of the pond, and a weir is provided on the inner periphery of the pond so that the gathered scum is passed therethrough, and a trough for receiving the introduced scum and leading it out of the pond is provided. The scum removing device is provided with a driving means for operating the interlocking means on the trough side so that the scum passes over the weir and is introduced into the trough. The rough is installed so that its scum introduction port is directed toward the center of the pond, and the driving means is mounted near the tip of the scraper, and escapes rearward when the auxiliary scraper approaches the trough at the tip of the scraper. It is characterized by being provided so as to be able to rotate horizontally so as to operate. The invention according to claim 2 is characterized in that the weir is supported by a trough by a horizontal axis so as to be able to float up and down on the surface of the water, and that the driving means interlocks the axis. I do.

By changing the installation direction of the trough by 90 degrees and attaching the auxiliary scraper to the scraper, the conventional scraper mounting bar, stay, horizontal shaft, holding member,
The need for guide rails is eliminated, and the gantry becomes smaller.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. 1 to 4 show an embodiment of the present invention. In this embodiment, the sedimentation basin is circular, and a baffle 2 is provided on the inner periphery of the overflow weir 1 on the outer periphery of the sedimentation basin. A small gantry 3 is fixed to the inner periphery of the overflow weir 1, and a trough 10 is attached via the gantry 3. The trough 10 is a square gutter having an open front and upper side, and side plates 11 on both sides of the trough 10.
The bottom plate 12 is connected to a discharge pipe 13 for guiding the scum to the outside. Trough 10
A horizontal shaft 14 is rotatably passed between both side plates 11, 11, and a mounting plate 15 is welded to the shaft 14, and a weir 16 is mounted via the plate 15. The weir 16 is an inverting type that is located in the trough 10, and the weir 16 floats and sinks at a water surface 17. In addition,
A seal 18 prevents water from entering between the shaft 14 and the trough 10. The trough 10 and the weir 16 have the back surface of the baffle 2 and the scum introduction side is directed toward the center of the pond. A guide 18 whose both ends are obliquely cut is attached to the front upper portion of the trough 10 so as to be horizontal and projecting forward. The guide 18 has a function of guiding an auxiliary scraper, which will be described later, but may be constituted by the front end of the trough 10, for example, the shaft 14. Between the both ends of the weir 16 and the trough 10, the plate 1 on the weir 16 side
The side surface is sealed by the seal 9 on the side of the trough 9. Interlocking means is provided at the end of the shaft 14. The interlocking means includes an arm 22 and a roller 23. On the other hand, a rotating arm 30 is provided in the pond so as to be horizontally rotatable below the water surface. The arm 30 is provided with two columns 31, 31, and a scraper 32 is attached via upper ends of the columns 31, 31. This scraper 32 is composed of one piece and has a specific gravity of 1
Use a certain amount of resin material. A vertically fixed hinge cylinder 33 is fixed to the tip of the scraper 32, and a hinge shaft is provided at the center thereof. The hinge shaft is erected on the column 31, and the movable side hinge cylinder 35 of the auxiliary scraper 34 is mounted coaxially. The auxiliary scraper 34 can swing horizontally via a hinge.
The scraper 34 is normally urged so that the tip thereof comes into contact with the inner peripheral surface of the pond as shown in FIG. This urging is performed by urging means. The biasing means includes a weight 40 and a rope 41. Reference numeral 42 denotes a mounting plate fixed on the auxiliary scraper 34 and facing the scraper 32. A rope 41 is suspended from the mounting plate 42, and the rope 41 is attached to a cylinder 43 provided on the scraper 32. Hanging down through the inside. A weight 40 is attached to the lower end. The force of the weight 40 is applied to the mounting plate 42 via the rope 41. When the mounting plate 42 rotates together with the auxiliary scraper 34, the weight 4
0 is lifted via the rope 41. Since the rope 41 is inclined, a force is generated on the mounting plate 42 so as to return the rope 41 to its original position. A driving means 45 as a cam is fixed to the column 31 and extends horizontally. The driving means 45 has two protrusions at the front and back, and has a recess between them. The driving means 45 is supported by a stay 46.

When the rotary arm 30 rotates, the auxiliary scraper 34 moves along the inner peripheral surface of the pond by the urging means. The scum on the water surface is guided in the outer diameter direction while following the front surface of the scraper 32, and gathers in front of the auxiliary scraper 34. At this time, the weir 16 floats above the water surface to prevent the scum nozzle from flowing. When the driving means 45 comes close to the roller 23 and pushes up, the shaft 1
4 rotates so that the weir 16 descends below the surface of the water, and scum is guided into the trough 10. The scum is discharged to the outside through the discharge pipe 13. Since the drive means 45 has two protrusions and one dent, the weir 16 is deep in the first stage, floats a little in the second stage, becomes a shallow position below the water surface, and becomes deep again in the third stage. The auxiliary scraper 34 is guided along the front surface of the guide 18 so as to pass in front of the trough 10 while swinging backward as shown in FIG. After passing through the trough 10, the scraper 34 comes to hit the inner periphery of the pond as before. When the driving means 45 passes through the roller 23, the roller 23 returns to its original state,
The weir 16 also floats on the water surface, and the flow of scum is stopped. In addition, as shown in FIG.
Scum may be introduced by kicking the lever 52 with the driving means 53 and opening the lever 52. In this case, floats 56 may be provided on both sides of the weir 54 so that the weir 54 is below the water surface 55. Also, as in the previous embodiment, the shaft 57 is rotated at the same time
May be reduced. As shown in FIG. 6, as a method of lowering the weir 60, the mounting plate 61 may be extended forward, and the magnets 62 may be provided at the ends thereof, while the magnets 63 may be provided as driving means. When the magnet 63 approaches the magnets 62...
The dam 60 may be lowered by the repulsive action of 2,..., 63, and the dam 60 may return by the weight of the magnet 62 due to the separation of the two magnets 62, 63. In this case, if the magnets 62 are arranged in the order of strong → weak → strong, the weir 60 will move up and down below the water surface. Further, as shown in FIG. 7, the present invention is applied to a rectangular settling tank in addition to the circular settling tank. 70 is a trough,
71 is a baffle, 72 is a rotating arm (scraper), 73 is an auxiliary scraper.

[0008]

[Effect of the Invention] Since the invention is configured as described above, the number of members is reduced, and the production is not troublesome.
The cost has come down considerably.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of FIG.

FIG. 3 is a plan view when scum is introduced.

FIG. 4 is a sectional view of the scum removing device.

FIG. 5 is a sectional view showing another embodiment using a valve.

FIG. 6 is a perspective view showing another embodiment using a magnet for driving.

FIG. 7 is a plan view showing an embodiment of a square sedimentation basin.

FIG. 8 is a plan view showing a conventional example.

FIG. 9 is a longitudinal sectional view thereof.

FIG. 10 is a sectional view taken along line XX of FIG. 9;

[Explanation of symbols]

 Reference Signs List 10 trough 16 weir 17 water surface 30 rotating arm 32 scraper 34 auxiliary scraper 45 driving means

Claims (2)

(57) [Scope of request for utility model registration] 1. A circular or square sedimentation basin is provided with a rotating arm that rotates about the center of the pond below the surface of the water, and the arm is provided with a scraper that collects scum floating on the surface of the water in the outer diameter direction. In addition, a movable auxiliary scraper that pushes the gathered scum in the rotating direction is provided at an end of the scraper in the outer diameter direction, while the gathering is performed around the inner periphery of the pond. And a trough for receiving the introduced scum and guiding the scum out of the pond.On the rotating side, the scum passes over the weir and is introduced into the trough. A scum removing device provided with a driving means for operating the interlocking means on the trough side, wherein the trough is installed such that its scum introduction port faces the pond center direction. The scum is characterized in that the driving means is mounted near the tip of the scraper, and is provided at the tip of the scraper so as to be able to rotate horizontally so that when the auxiliary scraper approaches the trough, it escapes backward. Removal device. 2. The weir is supported by a trough by a horizontal shaft so as to be able to float and sink at a water surface, and a driving means is adapted to interlock the shaft. 2. The scum removing device according to 1.