JP2582170Y2 - 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. 3 to 7 show a scum removing device proposed earlier by the present inventor. A plurality of (four) sprocket shafts 200 provided so as to be oriented in the width direction of the pond, and two sprocket shafts 200 were mounted around each of the rectangular sedimentation basins provided with this device. A sprocket 201 and two left and right chains 202 hung endlessly through the sprocket 201 are provided. The device is driven by using some or all of the flights 203... Attached to the chain 202 to attract and remove scum (floating matter) on the water surface. The scum removal device is a trough 20
5. Guide support sheet 206, weir member 208, transmission mechanism 2
09. The trough 205 has a gutter-like shape having an open upper part and a part of the front part of the square cross-sectional shape, and is fixed in the pond so that the longitudinal direction thereof is oriented in the width direction of the pond. The guide support sheet 206 is made of a rubber-like material having a long band shape like the trough 205, and is attached to the front side of the trough 205 in a projecting manner so that it can be bent up and down by elastic deformation. The weir member 208 is a long hollow member having a substantially triangular shape, and is attached to the front side of the guide support sheet 206 so as to protrude therefrom. The weir member 208 is provided so as to move up and down on the water surface 207 while being supported by the sheet 206. I have. The transmission mechanism 209 swings the weir member 208 up and down.
The transmission mechanism 209 includes a support shaft 210, a drive arm 211,
An operation arm 212 is provided. The support shaft 210 spans the width of the pond and the drive arm 211
Is a single arm extending forward from one side. The operating arm 212 is an arm extending in the direction of the trough 205, which is the direction opposite to the drive arm 211,
There are two left and right for stable operation. Drive arm 21
A copying member 213 is provided at the tip of the first member. The copying member 213 has a cam surface at the bottom, and the cam surface
The two protrusions 213a and 213c and the recess 21 between them
3b is a continuous cam surface. This copying member 2
13 to move the drive arm 211 and the operating arm 21
2 in conjunction with pushing down the weir member 207,
A roller (drive unit) 214 protrudes from one end of the flight (sludge scraper) 203. This roller 214
Is attached by a bracket 215 provided at one end of the flight 203 on the copying member 213 side. Reference numeral 220 shown in FIGS. 6 and 7 denotes a side seal (seal means).
This is for preventing scum and water from entering from between the side end of the weir member 208 and the side end of the trough 205. The scum and water are bent in a meandering manner, and the weir member 208 and the guide support sheet 206 are bent. It is made of rubber so that it can bend and deform as it moves up and down. This scum removal device operates as follows. By driving a motor on a pond (not shown), the chain 202 is driven, and the flights 203 attached to the pond are gently circulated in the directions of arrows in FIGS. 3 and 4. The flights 203... Rake the sludge settled at the bottom of the pond and guide it into the pit 221, and the led sludge is removed from the pond by a pump (not shown). The upward flight 203 is the roller 21 on its side.
4, the copying member 213 is pushed up. The roller 214 has a protrusion 213a → a recess 213b → a protrusion 2
13c while contacting the copying member 213 in the order of 13c.
Move 3 up and down. Thus, when the roller 214 hits the projection 213a of the first stage, the copying member 213
Then, the drive arm 211 is greatly pushed up and the operation arm 212 is pushed down, so that the weir member 208 is pushed down below the water surface through the rod 222. At this time, the large and small scum 204 on the water surface is guided into the trough 205 with the suction of the water, and then removed from the trough 205. When the roller 214 comes to the concave portion 213b, the copying member 213 and the drive arm 2
11 is temporarily lowered, and the operation arm 212 is raised. As a result, the weir member 208 rises slightly below the surface of the water, and the amount of water up to that point decreases. Since the amount of water decreases but the water speed increases, the scum 204
As a result, a large scum and a small scum can be attracted, and the scum 204 can be smoothly attracted to a distant scum 204. When the roller 214 reaches the projection 213c in the second stage, the copying member 213 and the drive arm 211 are raised again, and the operation arm 212 is lowered. Thereby, the weir member 208 is lowered,
A large amount of the drawn scum 204 is guided into the trough 205. Since the copying member 213 is stepped in this manner, the process from drawing to suction of the scum 204 is very effectively performed.

However, this scum removing device has the following disadvantages. (A) The weir member 208 is a rubber-made guide support sheet 206.
Since it is supported by, to stabilize the operation,
As shown in FIG.
2 are required. In the case of the two-line system, the support shaft 210 needs to be long and supported at both ends.
Therefore, the number of members increases, and it takes time and effort to manufacture,
The cost was quite high, and the equipment was large and construction was difficult. (B) FIG. 6 shows a damming state in which the weir member 208 floats above the water surface, and FIG. 7 shows a state in which the weir member 208 sinks below the water surface to induce scum. The device includes an L-shaped plate 21 attached to both ends of the weir member 208.
8 and a front plate 219 attached to the front surface of the trough 205, and a side seal 220 is provided therebetween to form a seal. The construction was also difficult as it became. 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 provided such that the lower part is immersed in the water surface and the upper part is above the water surface, and is fixed in the settling basin. A trough-shaped trough configured to have an opening lower than the water surface on one side and to guide scum and water introduced through the opening to the outside, and to be parallel to the water surface on the opening side of the trough. And a weir that swings up and down through a rotating shaft provided and guides and stops the scum and water on the water surface from the water surface by this swinging motion. A member and a copying member responsive to a force from a flight mounted on a chain circulated in the sedimentation basin are provided at the tip, and the response of the copying member is transmitted to the weir member, and the dam member is submerged under the water surface. To make the rocking motion A scum removal device comprising a mechanism and a return means for returning a weir member in a direction opposite to the submerging direction, wherein the transmission mechanism projects from the rotation shaft and is capable of responsively rotating the rotation shaft. Wherein the copying member is attached to the reper so as to correspond to a transition from an upper direction to a lower direction of the chain in an oblique direction. .

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. 1 and 2 show an embodiment of the present invention. In this embodiment, the sedimentation basin is a so-called rectangular sedimentation basin that is rectangular when viewed from above. The sedimentation basin includes a plurality of (four) sprocket axes that are axially oriented in the pond width direction and a plurality of sprocket axes around each axis. There are provided two sprockets each attached thereto, and two left and right chains 60 hung endlessly via these sprockets. A plurality of flights 70 are attached to the outer periphery of the chain 60 at regular intervals so as to perform a circulating motion. A roller 61 is provided at one end of the flight 70 via a bracket and a roller shaft. As shown in FIG. 1, the chain 60 and the roller 61 descend obliquely as they move from upward to downward, and make a U-turn to return to the vicinity of the water surface 72 again through the pond bottom.

[0006] The scum removing device includes a trough 71, most of its lower part is sunk below the water surface 73 and its back part protrudes above the water surface. The front part is considerably lower than the back part and the upper end is below the water surface. It is located in. The trough 71 is a trough-like shape having an open upper part and a part of the front side in a rectangular cross-sectional shape, and is longer than the pond width. The trough 71 is fixedly provided in the pond so that its longitudinal direction faces the width direction of the pond. . Trough 71
A communication pipe is connected to both ends in the longitudinal direction. The scum and water guided into the trough 71 are guided to the next processing system through the communication pipe.

A rotary shaft 56 is inserted and supported at the front side of the trough 71, and a dam member 62 is attached to the rotary shaft 56. The weir member 56 is formed by bending a stainless steel plate, and includes a hollow triangular portion such as a right-angled triangle at the front and a belt-shaped plate at the rear. 72 is a front seal.

From one longitudinal end of the rotating shaft 56, a lever 57 projects forward in the horizontal direction. The lever 57 has an auxiliary lever 5 which is bent downward in a U shape so that the length can be adjusted.
8 is inserted, and a copying member 59 having an opposite direction is attached to the tip of the auxiliary lever 58. The reverse copying member 59 has a two-step projection on the upper surface and a recess between them. As shown in FIG. 2, the copying member 5 corresponds to a chain
At the same time, the roller 61 is pushed down by a roller 61 descending downward. When lowered, the weir member 62
Is also going down. Since the long weir member 62 is of a hollow type, it serves as a return means,
The interlocking system from the copying member 59 to the weir member 62 after one pass is returned in the floating direction. Due to the two-step projection with the recess, the weir member 62 is operated so as to be greatly lowered at first, and then lifted up a little in accordance with the recess and pushed up further deeply. As a result, when the roller 61 corresponds to the dent, the scum of a far distance is drawn closer.
63 is a lock bolt and 64 is a fixture. When the lock bolt 63 is loosened to move the auxiliary lever 58 forward and backward, the adjustment direction is not perpendicular to the chain 60 but obliquely intersects, so that the positioning of the copying member 59 can be finely adjusted. It will be.

[0009]

[Effects of the Invention] Since the present invention is configured as described above, it becomes a scum removing device having a very simple structure, and furthermore, the lever is taken out from the rotating shaft which operates stably and reliably, and the lever is interlocked. The operation of the device becomes reliable and smooth.

[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 of a main part of FIG. 1;

FIG. 3 is a plan view showing an example of a conventional scum removing device.

FIG. 4 is a side sectional view of FIG. 11;

FIG. 5 is a perspective view showing a transmission mechanism.

FIG. 6 is a perspective view showing a conventional sealing method.

FIG. 7 is a perspective view when the sealing method of FIG. 6 is in operation.

[Explanation of symbols]

56 ... rotating shaft 57, 58 ... lever 59 ... copying member
Reference numeral 60: chain 61: roller (drive unit) 62: dam member 63: lock bolt 70: flight 71: trough.

Claims (1)

(57) [Scope of request for utility model registration] 1. A scum which is fixedly provided in a sedimentation basin so that a lower part is immersed in the water surface and an upper part is on the water surface, and has an opening lower than the water surface on one side and is introduced through the opening. And a gutter-shaped trough configured to lead water to the outside, and provided so as to swing up and down via a rotating shaft provided on the opening side of the trough so as to be parallel to the water surface. And a weir member that moves in and out of the water surface to guide and stop the scum and water in the trough by this rocking motion, and the force from a flight mounted on a chain that is driven circularly in the sedimentation basin. A transmission mechanism that includes a copying member at the tip thereof that receives and responds to the movement, and that transmits the reaction of the copying member to the weir member and swings the weir member in a direction of sinking below the water surface, and a direction opposite to the sinking direction. Returning the weir member to return movement A scum removal device provided with a means, wherein the transmission mechanism is provided with a lever protruding from the rotation shaft and capable of responsively rotating the rotation shaft, submerged in water,
The scum removing device, wherein the copying member is attached to the lever so as to correspond to a time when the chain moves obliquely from above to below the chain.