JPH0528492U - Scum removal device - Google Patents

Abstract

(57) [Abstract] [Purpose] To make the device cheap to manufacture with a simple structure. [Structure] A trough shaped like a trough is provided near the water surface of the treatment pond where a moving member is provided. A scum removing device configured to attract or block to a moving member, wherein the treatment pond has a linear member facing at least the linear member facing the moving member. The linear member is engaged in accordance with the movement of the moving member and changes from a straight state to a dogleg shape to be pulled to a scum-inducing posture, while the moving member advances by a certain amount. After that, the scum attracting stop posture is formed by returning from the same member and returning to the straight state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a scum removing device.

[0002]

[Prior Art]

 Since a large amount of scum accumulates on the water surface in the first or final settling basin, it is necessary to remove these efficiently. In order to remove these scums, the applicant has previously proposed the following scum removal device. 5 and 6 show a scum removing device S previously proposed by the present inventor. In the rectangular sedimentation basin equipped with this device, a plurality (4) of sprocket shafts 200 with the axis centered in the width direction of the pond, and two sprockets 201 attached around each shaft 200 are provided. There are two left and right chains 202 hung endlessly through these sprockets 201.

The device is driven by using some or all of the flights 203 ... Attached to the chain 202, and attracts and removes scum (floating matter) on the water surface. There is. The scum removing device includes a trough 205, a guide support sheet 206, a weir 208, and a transmission mechanism 209. The trough 205 is a long trough having a square cross-sectional shape with an opening on the upper side and a part on the front side, and is fixed in the pond so that its longitudinal direction is oriented in the width direction of the pond.

Like the trough 205, the guide support sheet 206 is made of rubber and is made of rubber, and is attached to the front side of the trough 205 in an overhanging manner and can be bent up and down by elastic deformation. .. The weir 208 is a long hollow having a substantially triangular shape, and a foam material may be filled therein, and the weir 208 is extended to the front side of the elastically deformable guide support sheet 206. It is attached so that it can move up and down with the water surface 207 as a boundary while being supported by the seat 206.

A response mechanism 209 swings the weir 208 up and down. The response mechanism 209 includes a rotary shaft 210 and a drive arm 211. The rotary shaft 210 is spanned across the width of the pond, and the drive arm 211 is one arm extending from one side of the rotary shaft 210 toward the front. A cam plate 213 is provided at the tip of the drive arm 211. The cam plate 213 has a cam surface at the bottom, and the cam surface is a continuous cam surface with two protrusions 213a and 213c and a recess 213b between them. This cam plate 213 is moved to interlock the drive arm 211 and the actuating arm 212, and the weir 207 is pushed down via the rod 224 and the interlocking arm 225. This is to project from one end of the flight (moving member) 203. It is a roller 214. The roller 214 is attached by a bracket provided at one end of the flight 203 on the cam plate 213 side.

The operating arm 212 constitutes a transmission mechanism together with the rod 224 and the interlocking arm 225, and is an arm extending in the direction of the trough 205, which is the opposite direction to the drive arm 211, and has two left and right arms. There is.

The scum removing device S operates as follows. A chain 202 is driven by driving a motor (not shown) on the pond, and flights 203 ... Arranged on the outer periphery of the chain 202 at regular intervals are circularly driven at a slight speed in the arrow direction. Flight 203 ... scrapes sludge that has settled at the bottom of the pond and guides it into the pit, and the sludge that is guided is removed outside the pond by a pump (not shown). The upward flight 203 pushes up the cam plate 213 by the roller 214 added to the side.

The roller 214 moves the member 213 up and down while contacting the copying member 213 in the order of the protrusion 213 a → the recess 213 b → the protrusion 213 c. As a result, when the roller 214 hits the protrusion 213a in the first stage, the cam plate 213 and the drive arm 211 are greatly pushed up and the operating arm 212 is pushed down, and the weir 208 is passed through the rod 224 and the interlocking arm 225. Push down below the surface of the water. At this time, the scum on the water surface, both large and small, is guided to the inside of the trough 205 as the water is sucked, and then is removed to the outside of the trough 205.

When the roller 214 comes to the recess 213b, the cam plate 213 and the drive arm 211 are temporarily lowered, and the operation arm 212 is raised. As a result, the weir 208 slightly rises and its upper end comes below the surface of the water, so that the amount of water up to that point becomes small. Since the amount of water decreases, but the water speed increases on the contrary, the suction force on the scum acts even on the scum on the distant water surface and smoothly draws it near the trough.

When the roller 214 comes to the protrusion 213c in the second stage, the drive arm 211 with the cam plate 213 moves up again and the operating arm 212 moves down. As a result, the weir 208 is lowered and a large amount of the drawn scum 204 is guided into the trough 205. Since the cam plate 213 is thus stepped, the scum 204 can be pulled from the suction to the suction very effectively.

The scum removing device S is installed one for each pond, and the troughs 205 are provided so as to be inclined in one direction, and these troughs 205 ... Are communication troughs. It is connected. The scum and water that have flowed into the trough 205 installed at a high position in the inclination direction flow in the order of the communication trough → the next trough 205 → another communication trough → the next trough 205 .... Further, the scum and water flowing into the intermediate trough 205 shown in the figure flow into the next trough 205 from the communication trough 230 on the lower side in the inclination direction. All of these scum and water flow to the lower side of the slope and are discharged outside the pond. In addition, the communication trough is designed to fix a part of the side wall of the pond through a hole made through it.

[0012]

The scum removing device S has a structure including a cam plate 213 that responds to a moving member, a drive arm 211, a rotary shaft 210, and an operating arm 212. Costs increased due to the overall increase in production costs, management costs, transportation costs, construction costs, etc.

The present invention has been made to solve such a problem, and an object thereof is to make it possible to provide a device at a low cost with a simple structure.

[0014]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention has a trough-shaped trough provided near the water surface of a treatment pond provided with a moving member, and the trough is provided by the rotation of itself or the ups and downs of a weir in front. A scum removal device configured to attract or block scum floating on the water surface into a trough, wherein the treatment basin has at least a linear portion facing the moving member. The linear material is stretched over, and the linear material engages in accordance with the movement of the moving member and changes from a linear state to a dogleg shape, so that the linear material is pulled into a scum attracting posture. On the other hand, it is characterized in that the moving member moves to a certain amount and then returns from the same member and returns to a straight state to be in the scum attraction stop posture.

[0015]

[Action]

 As seen in the above-mentioned solution means, since the scum is attracted by the pulling action of the linear material acting according to the moving member, and the attraction of the scum is stopped by releasing the pulling, the conventional method is adopted. No such response mechanism is required, and the entire structure becomes extremely simple.

[0016]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. 1 and 2 show an embodiment of the present invention. In this embodiment, 1 is the initial or final settling basin (treatment basin), 1 is a rectangle when viewed from above, and 2 is its longitudinal side wall. In this settling basin 1, a plurality of rotating shafts 3 ... And sprockets 4 ... are provided, and two chains 5 are laid on the left and right of the sprockets 4 ... A plurality of flights 6 ... Are arranged at regular intervals in the direction. This flight 6 can be made of wood, plastic, or any other material.

At the right end of the flight 6 in the traveling direction, a roller 7 is provided especially for this removing device via a bracket (not shown).

A trough 10 having a square cross section is fixedly provided at an end portion of the sedimentation tank 1 in a longitudinal direction so as to be orthogonal to the longitudinal direction. The trough 10 is supported by being connected with flanges 10a, 11a by communicating troughs 11, 11 which penetrate through the side wall 2 and are fixed by a bracket.

The trough 10 is open at the upper side and the front upper side, and side plates 12 extending forward from the flange 10a are provided at both ends in the longitudinal direction. The front opening is located below the water surface 13. A support shaft 14 slightly longer than the trough 10 is rotatably mounted between the side plates 12. A rubber seal 15 closes between the support shaft 14 and the front wall 10b of the trough 10.

A weir (float) 17 having a plate-shaped base and a triangular hollow cross section at the front is fixed to the support shaft 14 at the base and is rotatable. The weir 17 is a long one extending between the side plates 12, and the side seal 19 attached to the side end surface thereof slides on the side surface of the trough 10. The weir 17 floats and sinks with the water surface 13 as a boundary, and attracts and blocks scum floating on the water surface. The support shaft 14 is securely supported by a bearing (not shown) fixed to the trough 10.

On the other hand, the structure for floating the weir 17 is as follows. Reference numeral 20 denotes a wire material, which is a wire rope, and two wire rods are provided near each side wall 2. A bracket 21 and an anchor 22 are provided on the side wall 2, and one end of the linear member 20 is connected to the anchor 22. A lever 23 is provided so as to project from both ends of the rotary shaft 3, and the other end of the linear member 20 is coupled to the lever 23.

A first pulley 24 and a second pulley 25 are fixedly provided on the side wall 2, and the linear member 20 is hung so as to change the direction by the pulleys 24, 25. As a result, the linear member 20 is arranged so that the linear portion 20a from the anchor 22 to the first pulley 24 is obliquely lowered on the locus through which the roller 7 normally passes.

As a result, when the roller 7 comes to the left in FIG. 2, the linear portion 20a of the linear member 20 is lifted from that point, and is changed so that it becomes a V-shape like an imaginary line as it advances. Be done. As a result, the linear member 20 is pulled, so that the lever 23 is lifted and the weir 17 is lowered below the water surface to attract scum.

On the other hand, when the roller 7 moves from the position of the sprocket 4 to the right solid line in FIG. 2, the linear portion 20a of the linear member 20 returns to the linear state as shown by the solid line, and as a result, the weir 17 Due to the buoyancy and the like, the lever 23 lowers, the weir 17 floats above the water surface, and the attraction of scum stops.

In this embodiment, the roller 7 is used for driving, but the linear member 20 may be lifted on the upper surface of the flight 6 (may be through a shoe), or the rotary shaft 3, the sprocket 4, etc. The rotating member may be used as a moving member. Further, as shown by a phantom line in FIG. 2, the linear member 20 may be directly connected to the weir 17 without passing through the first pulley 24 and the second pulley 25. Further, in the above-mentioned embodiment, the flyt is configured as a moving member, but other moving members may be, for example, a rotating shaft of a chain, a sprocket, a chain, or the like. Further, although the fixed type trough is embodied in the above-mentioned embodiment, a conventional cylindrical rotatable scum schema may be used as the trough. Only one filament 20 may be used.

3 and 4 show another embodiment. In this embodiment, the roller 7 is arranged on the flight 6, and the filament 20 is slanted over the pond. That is, one end of the linear member 20 is hung on the bracket 21, and is hung on a first vertical shaft-shaped pulley 31 provided on the opposite side wall 2 so as to pass diagonally horizontally over the pond, and then the second horizontal shaft-shaped member. The pulley 32 and the third pulley 33 are configured to change the direction.

When the roller 7 hangs on the linear material 20, the linear material 20 changes into a flat dogleg shape as the roller 7 advances, and the direction is changed by the first pulley 31 and the second pulley 32. The weir 17 sinks below the surface of the water. When the roller 7 comes to the right state in FIG. 4, the linear member 20 returns to the linear state due to the buoyancy of the weir 17, and the weir 17 floats above the water surface to block the scum.

Note that the linear member 20 may be directly coupled to the rotating piece 35 on the lever 23, as shown by the alternate long and short dash line in FIG. In the case of this embodiment as well, the scum schema may be used. The same applies to the embodiments of FIGS. 1 and 2, but the linear material includes chains and rods.

Since the present invention is configured as described above, the device can be provided extremely simply and cheaply.

[Brief description of drawings]

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

FIG. 2 is a side sectional view thereof.

FIG. 3 is a plan view showing another embodiment.

FIG. 4 is a sectional side view thereof.

FIG. 5 is a side sectional view showing an example of a conventional scum removing device.

FIG. 6 is a perspective view showing the response mechanism.

[Explanation of symbols]

 1 Treatment basin (sedimentation basin) 6 Moving member 10 Trough 13 Water surface 17 Weir 20 Wire material

Claims (1)

[Scope of utility model registration request] 1. A gutter-shaped trough is provided near the water surface of a treatment pond provided with a moving member, and this trough is provided with scum that floats on the water surface due to its rotation or the ups and downs of a forward weir. A scum removing device configured to be attracted or dammed into a trough, wherein the treatment pond has a linear member having at least a linear portion facing the moving member. Stretched, the linear member is engaged in accordance with the movement of the moving member and changes from a straight state to a dogleg shape to be pulled into a scum-inducing posture, while the moving member moves by a certain amount. A scum removing device, characterized in that, after advancing, the scum attracting stop posture is achieved by returning from the same member and returning to a straight state.