JP2590511Y2 - Scum removal device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scum removing device. [0002] In equipment for purifying water, for example, in the first or final settling basin, a large amount of scum stays in a floating state on the water surface, but these scums are unnecessary. The scum is removed from the pond by a scum remover. In the past, scum was removed manually or electrically by a rotary trough, but this operation was difficult, costly, and scum could be effectively eliminated. could not. The Applicant has developed an automated device that performs this removal in relation to the movement of the flight in the pond. This device includes a trough, a weir, a swing 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 a hollow float, and is provided at a front position on the opening side of the trough so as to be able to protrude and descend at the water surface. The swing arm mechanism includes a swing arm and a transmission mechanism. The arm has a cam at the tip and is supported by a movable fixed fulcrum having a horizontal axis shape, and the cam moves up and down by following a flight in the treatment pond. It has become. The transmission mechanism transmits the movement of the interlocking arm, sinks the weir below the water surface by lifting the arm upward, and projects the weir again above the water surface by returning downward. The cam is hit by a circulating flight. As a result, the swing arm is lifted, and the weir submerges below the water surface. When the weir sinks below the surface of the water, scum flows into the trough together with the water on the water surface, and the scum passes through the trough and is discharged out of the pond. As the flight passes by the cam, the swing arm lowers, causing the weir to float back to the surface of the water through the transmission mechanism, leaving the scum blocked. [0003] The following problems have been encountered with the current scum removing device. That is,
It is thought that the construction of the device will be simplified if a rubber guide is provided on the front side of the trough so as to be able to move up and down so that it serves as a front seal and also serves as a mounting and supporting role for the weir. In this case, since the guide is made of a rubber plate, there is a possibility that water may enter from the front depending on how the guide is attached, or a flow of the scum flowing on the upper surface may be obstructed. A mounting method is required. The present invention has been made in order to solve such a problem. It is an object of the present invention to provide a scum removing device which ensures the sealability of an attraction guide and does not hinder the flow of scum. The purpose is to: [0004] In order to solve the above-mentioned problem, the invention according to claim 1 is provided with an inlet which is lower than the water surface of the treatment pond, and is fixedly installed in the same pond with both ends supported. A trough, and a weir whose front side is the same long member as the trough and whose upper part is made to be able to float up and down at the water surface, and the trough corresponds to the lower end of the induction port. Along the edge to be formed, a strip-shaped guide plate made of a rubber plate is fixedly attached with one long side as a base and is formed into a flat plate shape when the weir rises, and is directed obliquely upward and forward from the trough. A scum removal device which is formed to be a projected plate while being curved forward and downward when the weir descends, wherein the guide is mounted with a bottom surface of a rear end of the weir as a mounting surface. And According to a second aspect of the present invention, in the first aspect, the rear end of the guide is mounted using the outer peripheral surface of the trough as a mounting surface. Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. 1 to 3
1 shows an embodiment of the present invention. In this embodiment, the sedimentation basin (treatment pond) has a rectangular shape whose plane shape is long in one direction, and is generally called a rectangular sedimentation basin. The sedimentation basin is located in the first-floor tank 1, in which a scum removing device A is installed. A water surface 3 is set in the first floor tank 1, and a chain 5 having a plurality of flights 4 arranged below the water surface 3 is provided so as to be driven in the direction of the arrow. One or two (and more if necessary) of the flights 4 are provided with a roller type attacker 7 via a roller bracket 6 so as to protrude upward. This attacker 7
Are located closer to the inside of the guide rail 8. Numeral 9 is a trough-shaped trough, which is formed by a part of a cylinder as shown in FIG. 3 and is fixedly installed over the entire width of the pond. The upper portion of both ends in the circumferential direction of the trough 9 is an inlet. Both ends of the trough 9 in the longitudinal direction are the side walls 1 of the pond.
The scum attracted into the trough 9 is connected to pipes fixedly penetrating through the pipes 1 and 11, respectively, and is guided to the outside through these pipes. 10,10
Is a belt-shaped guide member formed of a rubber plate attached to the upstream side and the downstream side of the trough 9. Both ends of the guide 10 have troughs provided at both ends of the trough 9 at right angles to the trough 9 at right angles. 9 are sealed by side seal rubbers 12, 12 protruding from 9. The side seal rubber 12 includes a portion formed in a curved plate shape when viewed from above, and the portion is a flexible portion. The guide 10 protrudes forward and upward from the trough 9, and the protruding angle is about 35 degrees with respect to the water surface in a natural state. The weir 13 is attached so as to be located forward through the tip of the guide 10. In this case, the leading end of the guide 10 is mounted with the lower surface of the rear end of the weir 13 as a mounting surface. The reason why the leading end of the guide 10 is attached to the lower surface of the rear end of the weir 13 as a mounting surface is that the water pressure acts on the guide 10 from the front and the pressing force is applied to the weir 13. If the front end of the guide 10 is located above the rear end of the weir 13, the incoming scum will stay there.
This is because if the value of 0 is below, the flow of scum is not hindered. Further, when the guide 10 is mounted below the rear end of the weir 13, the mounting portion of the guide 10 is not exposed to sunlight, and is durable.
When the rear end of the guide 10 is also attached to the outer periphery of the trough 9, the durability is further improved. This weir 13
It is made of stainless steel with a hollow shape and an upper section with a chevron section.
The front side of the upper portion is inclined forward and downward, but the rear side of the upper portion is also inclined backward and has an inclined surface (approximately 35 degrees) continuous to the surface of the guide 10. Reference numeral 14 denotes a cable end connection pipe, which is attached to the weirs 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 above and below the chain 5. A cam mounting arm portion 15a, which is one end of the swing arm 15, extends toward the upstream side, and a pressing arm portion 15b, which is the other arm, extends toward the downstream side. The cam mounting arm 15a is located closer to the inside of the pond than the side wall 11, and the pressing arm 15b is located closer to the side wall 11 than the cam mounting arm 15a. The arms 15a and 15b are eccentrically arranged. . A long hole 1 with a bolt is provided in the cam mounting arm 15a.
The cam 19 is mounted so as to be able to adjust up and down through 8. Normally, the bolt is located at an intermediate height between the long holes 18..., But is adjusted up and down as necessary. The cam 19 has a first cam 19a on its lower surface.
And a second cam 19c protruding downward, and a horizontal recess 19b is provided therebetween. When the attacker 7 hits the first cam 19a, one end 15a of the swing arm 15
Is lifted, the other end 15b is lowered, and the lifting rod 20 is lowered. As a result, the weir 13 is greatly lowered through the cable 21, and even a large scum is attracted into the trough 9. Attacker 7 in dent 19b
, The weir 13 slightly floats but still slightly sinks. Since the dimension between the water surface 3 and the upper end of the trough 9 is reduced, the flow velocity of the water surface 3 is increased, and the water is sucked up to the scum far from the trough 9,
Invite to trough 9. Then, when the attacker 7 hits the second cam 19c, the weir 13 comes down again greatly, whereby the sucked scum is attracted into the trough 9 regardless of the size. Thus, scum is smoothly and reliably removed regardless of the size. In addition, in this embodiment, both ends of the weir 13 and the guide 10 are sealed by a side seal rubber 12 projecting from the trough 9 orthogonally to the longitudinal direction of the trough 9 so as to maintain a watertight state. The seal rubber 12 includes a portion formed in a curved plate shape when viewed from above, and the portion is a flexible portion. The direction in which the flexible portion projects into a curved plate shape is the side wall 11 of the treatment pond.
In the opposite direction. Various methods are considered as means for linking the weir 13 from the swing arm 15. 1 and 2 are configured by combining a lifting rod 20 and a cable 21. That is, the rod guide 22 is provided on the side wall 11, and the elevating rod 20 that vertically moves up and down is provided on the rod guide 22. The lifting rod 20 is configured to always return upward by the return spring 23. Cable 2
Reference numeral 1 denotes an outer cable guide and an inner cable core. The cable guide is attached by cable supports 24 and 25, and one end of the cable core passes through the guide to the upper end of the lifting rod 20 and the other end to the upper end. It is attached to the cable end connection pipe 14. Therefore, when the lifting rod 20 moves up and down, the front and rear weirs 13 are similarly moved up and down by the cable 21. The cam 19 is arranged below the chain, but may be arranged so as to face upward. The present invention is configured as described above, so that it is possible to provide a scum removing device which ensures the sealing performance of the guide and does not obstruct the flow of scum. In particular, when the guide is set to the upper side, when the holding bracket is further mounted on the upper surface, a large upwardly protruding portion is formed. In this case, the flow of the scum is greatly hindered. If the guide is placed on the lower side as described above, the holding metal can also be on the lower side, so that the flow of the scum is not obstructed. Moreover, when the invitation guide comes down,
That part will be protected from sunlight, and if the rear end of the guide is also brought down, it will be further protected.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an embodiment of the present invention. FIG. 2 is a longitudinal sectional view of FIG. FIG. 3 is a sectional view taken along line III-III of FIG. 1; [Explanation of Signs] A: Scum removal device 3: Water surface 4: Flight 9: Trough 10: Attraction guide 11: Side wall 13: Weir.

Claims (1)

(57) [Rules for requesting registration of utility model] A trough which is provided with an induction port lower than the water surface of the treatment pond and is fixedly installed at both ends in the pond, and a long member similar to the trough, the upper part of which is raised and lowered on the front side of the trough at the water surface. A weir that is made possible, and a belt-like long guide made of a rubber plate is fixed to the trough along one edge corresponding to the lower end of the guide port with one long side as a base. A scum removal device which is attached in a flat plate shape when the weir rises and projects obliquely upward and forward from the trough, while it is formed into a curved plate shape that falls forward when the weir sinks. The scum removing device, wherein the guide is mounted with a bottom surface of a rear end of the weir as a mounting surface. 2. 2. The scum removing device according to claim 1, wherein a rear end of the guide is mounted with an outer peripheral surface of the trough as a mounting surface.