JP2524312Y2 - Scum removal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a scum removing device.

[Conventional technology]

In equipment for water purification, for example, in the first or final sedimentation basin, a large amount of scum stays in a floating state on the water surface, but since these scums are unnecessary, they are removed from the pond by a scum removal device. I try to remove it.

The Applicant has developed and proposed an automated device for performing this removal in connection with the movement of the flight in the pond.

This device includes a trough, a weir, an interlocking arm mechanism, and the like.

The trough is partially fixed and installed in the treatment pond so that the opening is lower than the water surface of the treatment pond.

The weir is provided at a front position on the opening side of the trough via a support plate made of rubber or the like, and is capable of protruding and retracting at the water surface.

The interlocking arm mechanism has an interlocking arm and a transmission mechanism, and the arm has a cam at the tip and is supported by a horizontal fixed movable fulcrum, and the cam moves up and down by following the flight in the treatment pond. I have.

The transmission mechanism transmits the movement of the interlocking arm, sinks the weir below the water surface by lifting the arm upward, and returns the same to the water surface again by returning downward, and is constituted by, for example, a link or the like. ing.

The cam is hit by a circulating flight. As a result, the interlocking arm is lifted, and the weir submerges below the water surface. When the weir is submerged, scum flows into the trough together with the water in the water surface area, and the scum is removed from the pond through the trough.

As the flight passes by the cam, the interlocking arm lowers, thereby returning the weir to the water surface through the transmission mechanism, leaving the scum blocked.

[Problems to be solved by the invention]

By the way, the current scum removing device determines a fulcrum position in the middle of the extending direction of the interlocking arm, and uses this position as a movable fixed fulcrum to support so-called lever-type rotation.

The interlocking arm is configured to be attached to a long shaft fixedly supported at both ends between both side walls of the settling basin. The transmission mechanism includes an arm having one end coupled to a base side of the interlocking arm, which is not the cam side, and vertically moving about the support shaft by the arm, and another arm vertically moving about the support shaft in common. Things are common.

The other arm, in effect, raises and lowers the weir, but the above configuration requires a long shaft and a considerable number of arms, resulting in a complicated structure, It is troublesome and expensive. Also, assembling on site also required trouble.

The present invention has been made to solve such a problem, and the subject thereof is to simplify the structure, to reduce the production time and cost, and to assemble it on site. The goal is to save time and effort.

[Means for solving the problem]

In order to solve the above-mentioned problem, the present invention provides a scum removal device as described above, wherein the movable fixed fulcrum is located on the trough, and the interlocking arm passes over the weir from the movable fixed fulcrum and faces the trajectory of the flight. As described above, the transmission mechanism is supported in a cantilever manner, and the transmission mechanism is provided between the weir and the intermediate portion in the extending direction of the interlocking arm.

〔Example〕

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 (treatment pond) 1 has a rectangular shape whose plane shape is long in one direction, and is generally called a rectangular sedimentation basin. The longer side of the settling basin 1 is the side walls 2,2, and one of the two shorter sides is the front wall.
When the direction in which the side walls 2, 2 oppose each other is defined as the width direction, a large number of the settling basins 1 are arranged in parallel in the width direction. It is arranged to become.

Water (sewage) 3 is put into the sedimentation basin 1 from the preceding treatment equipment. The upper surface is a water surface 4, and a large amount of large and small scums float and stay on the water surface 4.

In the sedimentation basin 1, two rotating shafts 5 are provided near the water surface 4 and two at the bottom, and the axial center of each shaft 5 is directed in the width direction. In the figure, one of them
The book is shown. Two sprockets 6, 6 are attached to the outer periphery of each shaft 5, respectively, and are hung on the chain 7 through these sprockets 6, 6. Two chains 7 are hung at intervals in the width direction, and flights 8 are attached to each chain 7 so as to protrude outward. These flights 8 are arranged so as to extend in the width direction at regular intervals in the circumferential direction. The flights 8 are continuously driven in the direction indicated by the arrow. The drive motor is not shown.

A roller (drive unit) 9 is attached to every other one of the flights 8 at the right end in the traveling direction. The roller 9 is rotatably mounted on a bracket 10 mounted on the back of the flight 8 by a support shaft 11. The roller 9 protrudes beyond the flight 8 to one side in the width direction. However, when the roller 9 is provided in the existing pond 1, the amount of protrusion cannot be made too large. This is also the reason why the guide means described later is required.

Guide rails are provided at a position slightly below the water surface 4 and at the bottom of the pond, respectively.
Can be moved while contacting.

A fixed trough 12 is installed on the front wall of the sedimentation basin 1. The trough 12 has a trough-like shape having a rectangular cross section and being long in one direction, and a rib 13 protruding toward the front wall is provided on the back thereof.

Side plates 15, 15 are attached to both ends of the trough 12, and an end tube 16 having a rectangular cross section is attached to the outside of each of the side plates 15, 15. A flange 17 having an opening at the center is fixed to each outer end of the end tube 16.

A communication cylinder 18 is passed through each side wall 2 so as to protrude into the pond, and the flange 17 is joined to a flange 19 provided at an end of each cylinder 18 so that a trough is provided between the communication cylinders 18. 12 are fixed.

An opening 20 is formed at the front of the trough 12. The opening 20 is set lower than the water surface 4.

In the opening 20 of the trough 12, a seal 21 long in the width direction is attached by a bolt / nut 22. This seal 21
Comprises a lower mounting portion 21a and an upper gutter-shaped seal portion 21b, and a protrusion 21c extending long in the width direction is provided on an inner peripheral surface of the seal portion 21b so as to be arranged in parallel in the circumferential direction.
A cylindrical rotary shaft 23 is provided on the seal 21 so as to be in contact with the seal portion 21c, and maintains a sealed state with the seal portion 21c.

The rotating shaft 23 is supported at both ends by upper and lower split-type bearings 24, 24 fixed to the outer surface of the side plate 15, and a long receiving member 25 having an L-shaped cross section protrudes from the outer periphery thereof. Is provided. The receiving member 25 rotates back and forth with the rotating shaft 23.

A float (weir) 27 is attached to a front end of the receiving member 25 at a base by a bolt / nut 26. The float 27 is hollow, but may be a single plate, for example.

The float 27 is a long one extending between both side plates 15 and 15 and moves up and down so as to be in two states, a floating state (solid line) and a sinking state (virtual line) at the water surface 4 as a boundary. Is configured.

Fourth ends of both the float 27 and the
As shown in the figure, rubber seals 28, 28 are attached, and the rubber seals 28, 28 are configured so that the wastewater 3 does not flow into the trough 12 by itself due to contact with the inner surfaces of the side plates 15, 15. I have.

As shown in FIG. 2, the receiving member 25 has one bracket 29 which is located near one end in the longitudinal direction and projects into the trough 12. This bracket 29 forms a part of the transmission mechanism.

The transmission mechanism further includes an interlocking arm 30, a support shaft (movable fixed fulcrum) 31, a rod 32, and the like.

The interlocking arm 30 includes only one long arm, and a detachable cam 33 is attached to a tip of the arm 30. The cam 33 has two first and second projections 33.
a, 33b as well as a recess 33c, which are located to correspond to the rollers 9. A frame 34 having a groove 34a is attached to the side surface of the cam 33, while the corresponding pond side wall 2 has a groove 34a
A guide 35 having a guide shaft 35a that fits into the guide 35 is attached. Since the groove 34a is guided by the guide shaft 35a, the torsion of the cam 33 is regulated, so that the cam 33 does not come off from the roller 9. The tip of the cam 33 is
A bent portion is formed on the closer side wall 2 and the cam 33
Is received in the direction of the side wall 2 by the roller 9 and the cam 33
May not hit Flight 8.

The base of the interlocking arm 30 is a bearing 36 provided on the rib 13.
It is also rotatably mounted on a support shaft 31.

The rear end of the interlocking arm 30 slightly extends, and a stopper 37 extending from the rib 13 faces the portion from above, and the cam 33 and the interlocking arm 30 always return to a constant height, and the roller 9 and the cam 33 Is configured so that the contact is always suitably performed.

An adjusting bracket 38 having a plurality of holes 38a is attached to the bottom surface of the interlocking arm 30 corresponding to the upper side of the bracket 29. The upper ends of the rods 32 whose lower ends are engaged with the brackets 29 are hung in the holes 38a... By changing the hung positions, the stroke of the up and down movement of the float 27 can be changed.

This invention is not limited to the configuration shown in the above embodiment. For example, the following configuration is possible.

The interlocking arm 30 is provided with an auxiliary arm 30a as shown by the imaginary line in FIG. 1. The base on the trough 12 side is rotatable by another support shaft, and the intermediate point of the arm is Can be combined.

By doing so, the up and down movement of the float 27 is stabilized, and the occurrence of troubles is prevented.

The fulcrum of the interlocking arm 30 may be located on the side plate 15.

[Effect of the invention]

This invention is as described above. Therefore, the structure is simple, the production is not troublesome, the cost is low, and the on-site assembly is not troublesome.

[Brief description of the drawings]

1 is a plan view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, FIG. 3 is a sectional view taken along line III-III of FIG. 1, and FIG. FIG. 4 is a plan view showing a seal structure between a receiving member and a side plate. 1 ... sedimentation basin (treatment pond), 4 ... water surface, 8 ... flight, 12 ... trough, 20 ... opening, 27 ... float (weir), 29, 31, 32 ... transmission mechanism, 30 ... ... Interlocking arm, 33
……cam

Claims (1)

(57) [Scope of request for utility model registration] 1. A trough, which is provided at a position on the opening side of a trough, which is fixedly installed in the treatment pond so that the opening is lower than the water surface of the treatment pond. An interlocking arm which is supported by a movable fixed fulcrum having a horizontal axis and has a cam which is capable of protruding and retracting, and the cam is adapted to move up and down along a flight in the treatment pond, and transmits the movement of the arm. An interlocking arm mechanism with a transmission mechanism that causes the weir to sink below the surface of the water by lifting the arm upward and to project the same again above the surface of the water by returning downward. The interlocking arm is supported in a cantilever manner so as to pass over the weir from the movable fixed fulcrum and to be on the trajectory of the flight, and the transmission mechanism is provided between the intermediate portion in the extending direction of the interlocking arm and the weir. Scum removing apparatus, characterized in that provided in the.