JPH10236U - Scum removal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scum removing device in which a hollow closing structure of a weir together with a side seal structure is formed with the simplest structure, and durability is further improved. SOLUTION: A trough which is provided with an attraction port which is lower than the water surface of a treatment pond and which is fixedly installed in the pond in a state where both ends are supported, is a long member similar to the trough, and an upper portion is provided on the front side of the trough. A scum removal device comprising a hollow weir that is capable of moving up and down so that it rises and falls at the boundary, and an induction guide that is provided as a flexible member so as to be vertically deformable between the weir and the trough. A movable side plate is fixed to both ends of the weir in a direction perpendicular to the longitudinal direction of the weir, and provided as a plate for closing both side surfaces of the hollow weir. It is also characterized by a flexible side seal rubber connecting plate provided between the fixed side plate fixedly provided on the trough side.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 This invention relates to a scum removal device.

[0002]

[Prior art]

 In equipment for water purification, for example, in the first or final sedimentation basin, a large amount of scum stays in a floating state on the water surface, but since these scums are unnecessary, they are removed from the pond by a scum removal device. I try to remove it. In the past, scum was removed manually or electrically by a rotary trough.However, this operation was difficult, was not cost-effective, and effectively eliminated scum. 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 inside the treatment pond so that the opening is lower than the water surface of the treatment pond. The weir is a hollow float that is provided at the front of the trough on the opening side, and is capable of protruding and retracting at the water surface. The swing arm mechanism has a swing arm and a transmission mechanism.The arm has a cam at the tip and is supported on a horizontal fixed movable fulcrum, and the cam moves up and down by following the flight in the treatment pond. It is supposed to. 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 same again onto 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 sinks below the water surface. When the weir submerges 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 outside the pond. When the flight passes the cam position, the swing arm lowers, which causes the weir to float back to the surface of the water through the transmission mechanism, thus blocking the scum.

[0003]

[Problems to be solved by the invention]

 By the way, the following problems have appeared in the current scum removing device. In other words, a flexible guide plate made of rubber is attached to the front side of the trough, and a weir is attached in front of the guide so that the guide is elastically deformed up and down to allow the weir to move. While being elastically deformed, it is designed to prevent water from entering from the side. As a method of mounting the side seal rubber, a fixed side plate is projected from the trough so as to be orthogonal to the longitudinal direction, and the side seal rubber is erected at the front side of the fixed side plate so as to rise from both ends of the weir. Until now, it was considered that the front part of the rubber was directly attached to both ends of the weir to close the hollow weir. However, if rubber is connected to the weir, there may be a problem in durability, and it is necessary to cover the rubber with a holding plate, so that structural complexity is inevitable. The present invention has been made to solve such a problem, and the subject thereof is to simplify the closing structure of the weir together with the side seal structure, and further improve the durability. An object of the present invention is to provide a scum removing device that can be designed.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, the invention according to claim 1 includes a trough which is provided with an inlet which is lower than the water level of the treatment pond, and which is fixedly installed in the pond with both ends supported, and similar to the trough. A hollow weir made of a long member whose upper part can move up and down at the front of the trough so that it rises and falls at the water surface, and a flexible weir that can be vertically deformed between the weir and the trough A scum removal device provided with an induction guide provided as a movable damper, wherein movable side plates are fixed to both ends of the weir in a direction perpendicular to the longitudinal direction of the weir, and both side surfaces of the hollow weir are closed. The movable side plate is provided as a plate, and the movable side plate also serves as a connecting plate of a flexible side seal rubber provided between the movable side plate and a fixed side plate fixedly provided on the trough side. According to a second aspect of the present invention, in the first aspect, the upper end of the movable side plate returns to a horizontal state when the weir floats and returns.

[0005]

[Embodiment of the invention]

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. 1 to 3 show an embodiment of the present invention. In this embodiment, the sedimentation basin (treatment pond) has a rectangular shape whose one-dimensional shape is long in one direction, and is generally called a rectangular sedimentation basin. This 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 flies 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. The attacker 7 is 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. An upper portion of the trough 9 at both ends in the circumferential direction serves as an inlet. Both ends of the trough 9 in the longitudinal direction are connected to pipes penetrating and fixed to the side walls 11 and 11 of the pond, and the scum attracted into the trough 9 is guided to the outside through these pipes. It has become. Numerals 10 and 10 denote belt-like guides attached to the upstream and downstream sides of the trough 9 and made of rubber plates. Both ends of the guide 10 are perpendicular to the trough 9 at both ends of the trough 9 slightly inside. It is sealed by side seal rubbers 12 protruding from the trough 9 in a shape like a circle. The side seal rubber 12 has 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 has a protruding angle of about 35 degrees with respect to the water surface in a natural state. A 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 side surface of the rear end of the weir 13 as a mounting surface. In this way, the front end of the guide 10 is mounted with the lower surface of the rear end of the weir 13 as a mounting surface because the water pressure acts on the guide 10 from the front and the pressing force is applied to the weir 13. Therefore, the infiltration of water from the front is effectively prevented, and if the leading 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 10 is on the lower side, it will not hinder the flow of scum. Furthermore, 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. The weir 13 is made of stainless steel having a hollow shape and an upper part having a mountain-shaped cross section. The front part of the upper part is inclined forward and downward, but the rear part of the upper part is also inclined backward and is located on the surface of the guide 10. It has a continuous inclined surface (about 35 degrees). 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 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. These arms 15a and 15b are eccentrically arranged. ing. A cam 19 is mounted on the cam mounting arm portion 15a via a long hole 18 ° with a bolt so as to be vertically adjustable. Normally, the bolt is located at an intermediate height of the long hole 18 °, but is adjusted up and down as necessary. The cam 19 has a first cam 19a and a second cam 19c protruding downward on the lower surface thereof, and has a horizontal recess 19b 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 descends greatly through the cable 21, and even a large scum is attracted into the trough 9. When the attacker 7 corresponds to the dent 19b, the weir 13 slightly floats, but still keeps a slightly sunk state. 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 even to the scum far from the trough 9 and is attracted to the trough 9. Then, when the attacker 7 hits the second cam 19c, the weir 13 comes down again greatly, so that the sucked scum is attracted into the trough 9 regardless of the size. As a result, scum, regardless of size, is smoothly and reliably eliminated. 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 protrudes in the shape of a curved plate is a direction facing the side wall 11 of the treatment pond. The side seal rubber 12 is provided between a fixed side plate 30 provided to be orthogonal to the trough 9 and a movable side plate 31 fixed to both ends of the weir 13 to lower the weir 13 and guide the guide. The upper end of the weir 13 falls below the water surface due to the elastic deformation of the weir 13 and the upper end of the weir 13 falls below the water surface. At this time, when the weir 13 descends, the movable side plate 31 attached to it also accompanies the lower part of the water. In addition, since the side seal rubber 12 has a curved plate shape when viewed from above, it prevents water from entering from the side while performing a fan-shaped spreading motion in which the upper side is greatly expanded when viewed from the direction of FIG. . Further, while the fixed side plate 30 is horizontal, the movable side plate 31 also returns to the horizontal state when the weir 13 floats and returns (the state of FIGS. 1 to 3). The movable side plate 31 is attached to both ends in the longitudinal direction of the weir 13 to form a hollow space and increases the strength of the weir 13, and the rear end of the movable side plate 31 is connected to the side seal rubber 12. Used for That is, one plate is also used for closing the weir 13 and for connecting the side seal rubber 12. Also, since the upper end of the movable side plate 31 is horizontal when it returns, if a level is set on the movable side plate 31 and the movable side plate 31 is adjusted up and down, scum removal that operates as designed will be eliminated. The device can be provided. As shown in the figure, in the case where the weirs 13 are arranged before and after the trough 9, the front and rear weirs 13 can be adjusted to operate simultaneously by using a level. Note that 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 moves vertically is provided on the rod guide 22. The lifting rod 20 is configured to always return upward by the return spring 23. The cable 21 includes an outer 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 and has one end at the upper end of the lifting rod 20. The other end 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 move up and down by the cable 21 in the same manner. The cam 19 is arranged below the chain, but may be arranged so as to face upward, for example.

[0006]

[Effect of the invention]

 Since the present invention is configured as described above, it is possible to provide a scum removing device that simplifies the closing structure of the weir together with the side seal structure, and further improves the durability. it can.

[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 symbols]

A ‥‥ Scum removal device 3 ‥‥ Water surface 9 ‥‥ Trough 1
0: Attraction guide 11: Side wall 12: Side seal rubber 13: Weir 30: Fixed side plate 31: Movable side plate

Claims (2)

[Utility model registration claims] 1. A trough provided with an attraction port lower than the water surface of a treatment pond and fixedly installed in the pond with both ends supported, and an elongated member similar to the trough, with an upper portion at the front side of the trough. A scum removal device including a hollow weir that can move up and down so as to rise and fall on the water surface, and an induction guide that is provided between the weir and the trough so as to be vertically deformable and flexible. At both ends of the weir, a movable side plate is fixed in a direction perpendicular to the longitudinal direction of the weir and provided as a plate for closing both side surfaces of the hollow weir, and the movable side plate is A scum removing device characterized in that the scum removing device is also a connecting plate of a flexible side seal rubber provided between the fixed side plate fixedly provided on the trough side. 2. The method according to claim 1, wherein the upper end of the movable side plate is
A scum removing device that returns to a horizontal state when the weir rises and returns.