JPH10123U - Scum removal device - Google Patents

Abstract

(57) [Summary] (Modifications included) [Purpose] To provide a scum removal device with a very simple structure, and to ensure that the device operates reliably and smoothly. A trough 71 fixed in a sedimentation basin and a rotating shaft 56 provided on the opening side of the trough 71 are provided.
And a weir member 62 which is provided so as to swing upward and downward through the water surface, and which comes and goes on and off the water surface to guide and stop the scum and water on the water surface into the trough, and is circulated and driven in the sedimentation pond. Flight 70 mounted on the chain 60
A copying member 64 that responds by receiving a force from the front end is provided at the distal end, and the response of the copying member 64 is transmitted to the weir member 62 to transmit the response to the weir member 62.
A transmission mechanism for oscillating motion of 2 in a direction of submerging under water;
This is a scum removal device provided with a return means for returning the weir member 62 in a direction opposite to the direction of sinking, and is characterized by its transmission mechanism.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 This invention relates to a scum removal device.

[0002]

[Prior art]

 3 to 7 show a scum removing device proposed by the present inventor earlier. In the rectangular sedimentation basin equipped with this device, a plurality of (four) sprocket shafts 200 are provided so that the axial direction is oriented in the width direction of the pond, and two sprocket shafts 200 are mounted around each shaft 200. A sprocket 201 is provided, and two chains 202 on the left and right are hung endlessly through these sprockets 201. This 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 removing device includes a trough 205, a guide support sheet 206, a weir member 208, and a transmission mechanism 209. The trough 205 is a gutter-shaped long part having an open upper part and a front part of a 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 strip 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, substantially triangular hollow member which is attached to the front side of the guide support sheet 206 in a projecting manner and is provided so as to move up and down on the water surface 207 while being supported by the sheet 206. ing. 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, and an operation arm 212. The support shaft 210 is stretched across the width of the pond, and the drive arm 211 is a single arm extending forward from one side of the support shaft 210. The operating arm 212 is an arm extending in the direction of the trough 205 opposite to the driving arm 211, and has two left and right arms for stable operation. A copying member 213 is provided at the tip of the drive arm 211. The copying member 213 has a cam surface on the bottom, and the cam surface is a continuous cam surface including two projections 213a and 213c and a recess 213b therebetween. A roller (drive unit) 214 protruding from one end of the flight (sludge scraping plate) 203 moves the copying member 213 to link the drive arm 211 and the operation arm 212 to push down the weir member 207. . The 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 (sealing means) 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. It is made of rubber so as to bend in a meandering manner and bend and deform in response to the up and down movement of the weir member 208 and the guide support sheet 206. 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 the arrows in FIGS. The flights 203... Scrape the sludge settled at the bottom of the pond and guide it into the pit 221, and the led sludge is removed outside the pond by a pump (not shown). The upward flight 203 pushes the copying member 213 up by the roller 214 on the side thereof. The roller 214 moves the member 213 up and down while contacting the copying member 213 in the order of the protrusion 213a → the recess 213b → the protrusion 213c. As a result, when the roller 214 hits the projection 213a in the first stage, the copying member 213 and the drive arm 211 are pushed up greatly, and the operation arm 212 is pushed down. Become. At this time, the large and small scum 204 on the water surface is guided into the trough 205 as the water is sucked in, 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 211 are 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 suction force of the scum 204 increases, so that both large and small scum can be attracted and the scum 204 can be smoothly attracted to a distant scum 204 as well. When the roller 214 reaches the projection 213c in the second stage, the copying member 213 and the driving arm 211 are raised again, and the operation arm 212 is lowered. As a result, the weir member 208 is lowered, and 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 the scum 204 to sucking it is very effective.

[Problems to be solved by the invention]

 However, this scum remover has the following disadvantages. (A) Since the weir member 208 is supported by the guide support sheet 206 made of rubber, two operation arms 212 and two rods 222 are required as shown in FIG. Become. In the case of the two-beam system, the support shaft 210 needs to be long and supported at both ends. As a result, the number of components increased, the production was troublesome, and the cost was considerably high. (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 removing device has an L-shaped plate 218 attached to both ends of the weir member 208 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. Therefore, the seal 220 was special and large, so that the cost was high and the construction was also difficult. This invention has been made to eliminate these disadvantages.

[0004]

[Means to solve the problem]

 In order to solve the above problem, the invention according to claim 1 is provided such that the lower part is immersed in the settling basin such that the lower part is immersed in the water surface and the upper part is on the water surface, and an opening lower than the water surface is formed. A trough-shaped trough, which is provided on the side and is configured to lead scum and water introduced through the opening to the outside, and 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 is provided so as to swing upward and downward through the rocking surface, and that emerges and descends at the water surface by the swinging motion to guide and stop scum and water on the water surface into the trough, A tip is provided with a copying member that responds to the force of the flight mounted on the chain circulated in the settling basin and transmits the response of the copying member to the weir member, and sinks the dam member below the water surface Transmission mechanism for oscillating movement in the direction, And a return means for returning the weir member in a direction opposite to the above, wherein the transmission mechanism submerges a lever protruding from the rotary shaft and capable of responsively rotating the rotary shaft in water. The scum removing device, wherein the scum removing device is provided in a state, and the copying member is attached to the repeller 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 embodiments. 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 and two left and right chains 60 endlessly hung through 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 the lower part of which is submerged below the water surface 73, and the back surface part is protruded 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 gutter-like shape having a rectangular cross-sectional shape with the upper side and a part of the front side opened and having a length less than the width of the pond. The trough 71 is fixed in the pond so that its longitudinal direction is oriented in the width direction of the pond. I have. A communication pipe is connected to both ends of the trough 71 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 on 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 has 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.

[0008] From one longitudinal end of the rotary shaft 56, a lever 57 projects forward in the horizontal direction, and an auxiliary lever 58 that is bent downward in a U shape so that the length can be adjusted is inserted into the lever 57. An opposite copying member 59 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 is pushed down by the roller 61 that descends with the chain 60 so as to correspond to the orbit of the roller 61. When lowered, the weir member 62 is also lowered. Since the long weir member 62 is a hollow type, it serves as a return means, and returns the interlocking system from the copying member 59 to the weir member 62 after passing through the roller 61 in the floating direction. Due to the two-step projection with the dent, the weir member 62 is lowered so as to initially rise, and then rises a little in accordance with the dent, and operates so as to be pushed up further. 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 and the auxiliary lever 58 is moved forward and backward, the adjustment direction is not perpendicular to the chain 60 but obliquely intersects. Therefore, the positioning of the copying member 59 is finely adjusted. Gain.

[0009]

[Effect of the invention]

 Since the present invention is configured as described above, it becomes a scum removal device having a very simple structure, and furthermore, the lever is taken out from the rotating shaft which operates stably and reliably, and is interlocked. It will be sure 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)

[Utility model registration claims] 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.