JP2607021Y2 - 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 6 show an example of a conventional scum removing apparatus. The first or final sedimentation basin, which is a treatment pond, has a flat surface as shown in FIG. That is, the respective sedimentation ponds are arranged in groups such as A, B, C, D... Each group consists of the first partition wall 1 ...
, And the inside of each group is partitioned by second partition walls 2. Each pond is provided with a chain 4 which is circulated up and down by a plurality of sprockets 3 as shown in the upper part of FIG. 6, and these chains 4 circulate the flights 5. In Flight 5, the sludge that has settled downwards is swept to one side and dropped into the bottom of the scum pit 6. This sludge is pumped out of the pond. When the flights 5 come to the pond water surface 7, the scum floating above the water surface 7 is pushed in one direction. A scum removing device is provided to face this pushing direction.

This apparatus has a trough 10 having a rectangular gutter shape and an elongated shape. The trough 10 is open at the upper side and also at the front upper part which is a scum inducing side. A flange 11 is attached to an end of the trough 10 so as to leave an opening serving as a communication port inside. The troughs 10
The connection tube 13 is connected by a flange 12 via a communication tube 13, and the communication tube 13 is inserted into a burred hole 14 formed in the second partition wall 2 and is embedded and fixed by a mortar 15.

A mechanism for taking in the scum will be described. Reference numeral 20 denotes a rubber sheet having a base attached to the front surface of the trough 10 on the scum-inducing side and extending obliquely upward and elastically deformable up and down. A hollow float (weir) 21 that floats and sinks at the water surface 7 is attached. The float 21 includes side plates 22 each having an L-shape as viewed from above at both left and right end portions, and a bellows-like side seal 23 is provided between a rear portion of the side plate 22 and a high plate portion at both front surfaces of the trough 10. It is provided to be extendable and contractable so that scum and water from the outside do not enter the trough 10.

As a mechanism for holding the float 21, a rotation support shaft 24 provided between the first and second partition walls 1 and 2 or between the second partition walls 2 and 3 so as to be located in front of the trough 10. A drive arm 25 extending from the support shaft 24 at right angles to the anti-trough direction;
A scanning member 26 provided at the end of the arm, two parallel operating arms 27 extending at right angles to the trough 10 from the support shaft 24, and a lower end which is pinned to a tip of the operating arm 27 on the trough 10 side and floats at the lower end. And a rod 28 pinned to 21. When the roller 29 provided at the side end of the flight 5 hits the copying member 26, the copying member 2
6 moves up and down twice. Thus, the drive arm 25 and the operating arm 27 perform the same movement, and the flight 21 moves up and down twice through the rod 28 with the water surface 7 as a boundary. The float 21 rises to a position several centimeters below the surface of the water after descending significantly below the surface of the water, and then descends again after sinking greatly. By repeating this cycle, scum on the water surface is attracted.

[0006]

As shown in FIG. 5, in the conventional scum removing apparatus, a rubber seal 20 is fixed to the front surface of the trough 10 on the scum inducing side so as to face obliquely upward and forward. At the same time, the float 21 was attached via the upper end of the seal 20. Thus, the seal 20 has a function of supporting the float 21 so as to be able to move up and down and a function of preventing water from entering from the front. However, since the seal 20 itself has a role of rotatably supporting the float 21, there is a possibility that repeated movements may cause fatigue damage. Therefore, the present applicant has devised that the float 21 is separately supported by the rotation shaft so that an excessive load is not applied to the seal. However, as a seal in this case,
If the method of fixing the base of the seal 20 to the front surface of the trough 10 as shown in FIG. 5 is adopted, since the trough 10 is made of metal and the seal 20 is made of rubber, the seal is turned up and the sealing property is not good. It also takes time to position the 20 with respect to the trough 10. This invention was made in order to solve such a problem, and in the one that supports the weir with the rotating shaft, the seal on the scum inducing side between the weir and the trough is made easy to attach and easy to position,
It is an object of the present invention to provide a scum removing device that functions as a device that ensures good watertightness by the seal and that is more durable.

[0007]

Means for Solving the Problems To solve the above problems, the invention according to claim 1 has a gutter-like and elongated shape fixedly provided in a treatment pond with the scum attraction side lower than the water surface. A trough, a rotating shaft provided on the scum-inducing side of the trough in parallel with the longitudinal direction of the trough, and a weir having a base mounted on the rotating shaft and rotatably supported so as to float up and down on the water surface. And a driving means for vertically moving the weir, and an elastic seal provided between the scum-inducing side of the trough and the weir to prevent water from entering the trough. In a scum removing device for inviting or blocking a scum on the water surface through a weir into a trough by moving, the seal has a bifurcated lower portion, and a plate portion on the guide side of the trough. And fixed from above The top of the seal, characterized in that it is watertight shape weir side.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail. 1 and 2 show one embodiment of the present invention. In this embodiment, reference numeral 30 denotes a second partition wall, and the wall 30 has a file hole 31 formed therein. The file hole 31 is left as it is without being filled with mortar.

The scum removing device has a long trough 3
2 and the trough 32 has flanges 33 at both ends. A rotating shaft 34 is mounted between the two flanges 33 so that the rotary shaft 34 is supported at both ends by bearings so as to pass in parallel with the longitudinal direction of the trough 32 on the front side, which is the scum-inducing side of the trough 32. The lower side of the rotating shaft 34 is hermetically sealed by a rubber seal 35, and
A float 36 is attached by welding so as to extend forward from 4, and when the float 36 is pressed down, the float 36 is lowered below the surface of the water while being supported by the rotating shaft 34. Return to the top. The floating of the float 36 is similarly linked by a transfer arm mechanism such as the copying member, the drive arm, the operating arm, the rotation support shaft, and the rod as described above. The end face of the float 36 is configured to come to the side face of the second partition wall 30.

The seal 35 has a lower end formed in a forked shape so as to be inserted into and fixed to the front end of the trough 32 from above, and the upper end of the seal 35 has a rotating shaft 34 on the float 36 side. Is always in contact with the lower surface of the housing to maintain a watertight state.

The flanges 33 of the trough 32 are
Positioned in the middle of the file hole 31 and directly joined with bolts, between the outer periphery of the trough 32 and the file hole 31, there are provided bellows-like side seals 37 in the form of a square ring. Also, on both sides of the second partition wall 30, L
Mold brackets 38 are provided, respectively,
An adjuster 39 is provided between the trough 8 and the trough 32 so that the trough height can be adjusted up and down at any time. The float 36 is not hollow, and may be made of, for example, a single plate made of plastic, and may be configured so that the vertical operating force does not need to be much different.

[0012]

[Effects of the Invention] With the above construction, in the case where the weir is supported by the rotating shaft, the seal on the scum-inducing side between the weir and the trough is easy to install and easy to position. It is possible to provide a scum removing device that functions as a device that ensures good watertightness by a seal and that is more durable.

[Brief description of the drawings]

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

FIG. 2 is a side sectional view thereof.

FIG. 3 is a plan view showing a conventional example.

FIG. 4 is an enlarged vertical cross-sectional view of a main part thereof.

FIG. 5 is a side sectional view thereof.

FIG. 6 is a side sectional view showing the entire scum removing device.

[Explanation of symbols]

 32 Trough 34 Rotating shaft 35 Seal 36 Float

Claims (1)

(57) [Scope of request for utility model registration] 1. A trough-like and long trough provided fixed in a treatment pond with a scum inducing side lower than the water surface, and a trough in parallel with a longitudinal direction of the trough on the scum inducing side of the trough. A rotating shaft provided, a weir having a base attached to the rotating shaft and rotatably supported so as to float up and down at the water surface, driving means for vertically moving the weir, and scum inducing of the trough An elastic seal provided between the side and the weir to prevent water from entering the trough, and the weir moves up and down to draw scum on the water surface into the trough through the weir and to the weir. In the scum removing device for stopping, the lower part of the seal is formed in a bifurcated shape, and the seal is inserted and fixed from above into the plate part on the inducing side of the trough, and the upper part of the seal is watertight to the weir side. Is characterized by being shaped like Cam removal device.