JPH0621594Y2 - Scum removal device - Google Patents

Description

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

[Conventional technology]

In facilities for water purification, for example, in the first or final settling basin, a large amount of scum stays in the floating state on the water surface, but these scums are unnecessary and can be removed outside the pond by a scum removal device. I am trying to remove it.

In the past, the scum was removed manually or electrically by a rotary trough, but this is difficult to operate, it is not cost-effective, and the scum can be effectively removed. could not.

The Applicant has developed an automated device which makes this removal related to the movement of the flight in the pond.

This device is composed of a trough, a weir, a swing arm mechanism, and the like.

The trough is fixedly installed in the treatment pond with a part of the opening and the opening is lower than the water level of the treatment pond.

The weir is a hollow float and is provided at the opening side front surface position of the trough so that it can appear and disappear at the water surface.

The swing arm mechanism includes a swing arm and a transmission mechanism,
The arm is provided with a striker at its tip and supported by a movable fixed fulcrum having a horizontal axis, and the striker moves up and down by following a flight inside the treatment pond.

The transmission mechanism is said to transmit the motion of the interlocking arm to lift the arm upward, sink the weir below the water surface, and return the weir downward to cause the weir to project again above the water surface.

A flight driven by circulation hits the striker. As a result, the swing arm is lifted, and the weir comes to be submerged below the water surface. When the weir sinks below the surface of the water, the scum flows into the trough along with the water in the water surface,
It is passed outside the pond through the trough.

When the flight passes the position of the striker, the swinging arm is lowered, whereby the weir floats up through the transmission mechanism and returns to the surface of the water, and the scum remains blocked.

[Problems to be solved by the device]

By the way, this scum removing device has the following problems.

That is, when the weir is hingedly supported on the front side of the trough, the sealing means inevitably has a complicated structure and the scum is clogged on the front side.

In addition, the lateral area formed by the side edges of the weir and the side wall of the pond and the trough is inevitably wide, and a large amount of scum accumulates there persistently, which may cause foul odors and spoil the beauty of the pond. There was no problem.

In addition, the hinge support system complicates the structure, which is difficult and expensive to manufacture, and also requires a lot of time and effort for construction.

The present invention has been made to solve such a problem, and the problem is that the structure of the entire device is simplified, easy to manufacture, inexpensive and easy to install, and the scum is It is an object of the present invention to prevent clogging in any of the above cases so that the operation of the apparatus can always be performed smoothly, and further, scum can be prevented from accumulating even in the weir side area.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the present invention has a trough that is provided with an inlet that becomes lower than the water level of a treatment pond and is fixedly installed in the pond with both ends supported, and a long trough that is hollow and similar to the trough. On the front side of the trough, the upper part can float up and down with the water surface as a boundary, and the sinking motion converts the motion of the flight circulating in the treatment pond into mechanical motion, and the floating force enables it. In the scum removing device having a weir enabled by its own buoyancy, in the trough, a strip-shaped attracting guide made of a rubber plate is provided along the edge corresponding to the lower end of the attracting port. The one side of the long side is fixed and attached, and the other side of the trough is in a natural rubber state and is projected forward and obliquely upward from the trough, and the weir is projected from the attraction guide. Through the tip Is installed so as to be located in front of the trough, and both side ends of the weir and the attraction guide are sealed by a side seal rubber projecting perpendicularly to the longitudinal direction of the trough so as to maintain a watertight state. It is characterized by

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

1 to 3 show an embodiment of the present invention.

In this embodiment, the sedimentation basin (treatment basin) is a rectangular one having a plane shape elongated in one direction, and is generally called a rectangular sedimentation basin. This settling tank is located in the first-floor tank 1, and a scum removing device A is installed inside the tank.

A water surface 3 is set in the first-floor tank 1, and a chain 5 in which a plurality of flights 4 are arranged below the water surface 3 is provided so as to be driven in the arrow direction.

One or two (more if necessary) of the flights 4 are provided with roller-type attackers 7 via roller brackets 6 so as to project upward.

The attacker 7 is located on the inner side of the guide rail 8. Reference numeral 9 is a trough-shaped trough, which is formed by a part of a cylinder and fixedly installed so as to extend over the entire width of the pond, as shown in FIG. The upper ends of the trough 9 in the circumferential direction serve as inlets.

Both ends of the trough 9 in the longitudinal direction are connected to pipes fixed to the side walls 11 and 11 of the pond, respectively, and the scum attracted into the trough 9 is guided to the outside through these pipes. There is. 10 and 10 are trough 9
Are guides made of a rubber plate, which are attached to the upstream side and the downstream side of the trough 9, and both side ends of the guide 10 are formed on both sides of the trough 9 so as to be orthogonal to the trough 9 at a side surface thereof. The seal rubbers 12 and 12 move while being sealed.

The attraction guide 10 is attached to the front and rear edges of the trough 9 with one side thereof as a base, and the other side thereof has a tip protruding diagonally upward and forward from the trough, and the protrusion angle is in a natural state. It is said to be around 35 degrees relative to the water surface.

The weir 13 is attached so as to be located forward through the tip of the attraction guide 10.

This weir 13 is made of stainless steel having a hollow shape and a mountain-shaped cross section at the top.
The rear side of the upper part also has a rearwardly downward shape and is provided with an inclined surface (approximately 35 degrees) continuous with the surface of the attraction guide 10.

Reference numeral 14 denotes a cable end connecting pipe, which is attached to the weirs 13, 13.

On the other hand, a swing arm 15 is attached to the side wall 11 of the first-floor tank 1 so as to be located upstream of the trough 9 and below and above the chain 5.

One end 15a, which is the tip of the swing arm 15, extends toward the upstream side, and the other end 15b, which is the base end, extends toward the downstream side. A striker 19 is attached to the upper end 15a so as to be vertically adjustable via elongated holes 18 with bolts.

Normally, the bolts are positioned so as to come to the intermediate height of the elongated holes 18 ... However, the bolts are adjusted up and down as necessary.

The striker 19 has a first cam 19a and a second cam 19a on its lower surface.
A cam 19c and a cam 19c are provided so as to project downward, and a horizontal recess 19b is provided between them.

When the attacker 7 hits the first cam 19a, one end 15a of the swing arm 15 is lifted and the other end 15b is lowered, and the lifting rod 20 is lowered. This allows
The weir 13 is greatly lowered through the cable 21, and even a large scum is attracted into the trough 9. Dent 19
When the attacker 7 responds to b, the weir 13 will be slightly floated but still slightly sunk. Water surface 3 and trough 9
Since the dimension between the upper ends of the water drops, the flow velocity on the water surface 3 increases, and even the scum located away from the trough 9 is attracted to the trough 9. Then, when the attacker 7 hits the second cam 19c, the weir 13 again largely descends, whereby the sucked scum is attracted into the trough 9 regardless of its size.

As a result, scum can be smoothly and reliably removed regardless of size.

As described above, the trough 9 has a strip-shaped attracting guide 10 made of a rubber plate along the edge corresponding to the lower end of the attracting port.
Is fixedly attached with one side of its long side as a base, and the other side of the trough 9 is in a natural rubber state and protrudes obliquely upward and forward from the trough 9, and
The weir 13 is attached so as to be located in front of the protruding end of the attraction guide 10.

In this way, since the rubber plate attraction guide 10 is attached to the trough 9 and the weir 13 is attached via this, the scum rising from below is at the hinge portion compared to when the weir is hinged to the trough. There is no risk of accumulation and clogging and obstructing the operation of the weir.

As in the above-described embodiment, when the protrusion angle of the attraction guide 10 is about 35 degrees with respect to the water surface in the rubber natural state when the trough 9 is in the floating state, the weir 13 floats from the sinking state. Even when trying to return, the inclination of the upper surface of the guide guide 10 can be secured to be large, so that the scum vigorously flows from the weir 13 over the guide guide 10 and flows quickly and smoothly in the trough 9. As a result, when the weir 13 finishes ascending, the inclination angle becomes larger than that, so that the flow of scum becomes faster, and the weir is stopped at a high speed. There is no such fear. This prevents the scum from solidifying on the upper surfaces of the weir 13 and the attraction guide 10 and obstructing the inflow.

In addition, the present invention is characterized in that both side ends of the weir 13 and the attraction guide 10 are sealed by side seal rubbers 12 projecting perpendicularly to the longitudinal direction of the trough 9 so as to maintain a watertight state. .

According to this side seal system, scum accumulation and solidification can be effectively prevented.

By the way, if the upper end portion of the weir 13 has a mountain-shaped cross section and the striker 19 is provided with a plurality of stages of cams, for example, when the scum passes over when the attacker 7 corresponds to the recess 19b, the weir The scum is destroyed by the weir's mountain as it rocks up and down, and it is difficult for the scum to be ridden. This is also the case when the attacker 7 has completely passed the striker 19, and at this time, the weir 13 rapidly rises to the water surface by its own buoyancy, and as a result, the scum flowing in the mountain portion is destroyed. When the scum is destroyed, the scum is easily attracted into the trough, and the scum recovery rate is improved.

Various methods have been considered as means for interlocking the weir 13 with the swing arm 15. 1 and 2 are constructed by combining the elevating rod 20 and the cable 21.

That is, the side wall 11 is provided with the rod guide 22, and the rod guide 22 is provided with the elevating rod 20 which moves vertically.

The elevating rod 20 is configured to always return upward by a return spring 23. The cable 21 is composed of an outer peripheral cable guide and an inner cable core. The cable guide is attached by the cable supports 24 and 25, and the cable core passes through the guide so that one end is on the upper end of the elevating rod 20 and the other end is. Is attached to the cable end connection pipe 14. Therefore, when the elevating rod 20 moves up and down, the cable 21 causes the front and rear weirs 13 to similarly float up and down.

The striker 19 is arranged on the lower side of the chain, but may be arranged so as to face the upper side, for example.

Although the striker of the above embodiment is provided on the swing arm side, for example, the striker may be attached to the flight side and the swing arm side may be kicked by this striker.

[Effect of device]

Since the present invention is configured as described above, the overall structure of the device is simplified, easy to manufacture, inexpensive and easy to install, and the scum does not clog into any of the devices so that the device always operates smoothly. It is also possible to prevent scum from accumulating even in the weir side area.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a sectional view taken along line III-III of FIG. A: scum removal device, 3 ... water surface, 4 ... flight,
9 ... Trough, 10 ... Attractor guide, 11 ... Side wall,
12 ... Side rubber seal, 13 ... weir

Claims (1)

[Scope of utility model registration request] 1. A trough provided with an inlet that is lower than the water level of the treatment pond, and fixedly installed in the same pond with both ends supported.
It is a hollow and long member similar to the above trough, and the upper part on the front side of the trough can float up and down with the water surface as a boundary, and the sinking motion converts the movement of the flight circulating in the treatment pond into mechanical movement. In the scum removing device provided with a weir that is capable of floating movement while being allowed by its transmission force, in the trough, a rubber is provided along the edge corresponding to the lower end of the attraction port. A strip-shaped attracting guide made of plate is fixedly attached with one side of its long side as a base, and the other side of the trough is in a natural rubber state.
It is in a state of projecting obliquely upward and forward from the trough, and the weir is attached so as to be positioned in front of it through the projecting tip of the attraction guide, and both ends of the weir and the attraction guide are A scum removing device, characterized in that it is sealed so as to maintain a watertight state by a side seal rubber provided so as to project orthogonally to the longitudinal direction of the trough.