JPH0528491U - Shower device for scum removal device - Google Patents

Abstract

(57) [Abstract] [Purpose] To make the device cheap to manufacture with a simple structure. [Structure] A trough-shaped trough is fixed near the water surface of the treatment pond where a moving member is installed, with its front opening below the water surface, and floats and sinks near the water surface near the front opening of this trough. A weir is provided for attracting and blocking the scum floating on the water surface in the trough, and a rotating cylinder is laterally installed in the treatment pond, and the rotating cylinder is provided with the moving member. A shower device for a scum removing device, comprising: a responsive drive arm; and an actuating arm that changes the motion of the drive arm into a weir up and down motion via the rotary cylinder,
A valve that opens and closes in response to the moving member,
A nozzle for injecting a shower toward the water surface toward the trough, and configured to inject the shower from the nozzle through at least the internal space of the rotary cylinder when the valve is in a flow state. And

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shower device for a scum removing device.

[0002]

[Prior Art]

 Since a large amount of scum accumulates on the water surface in the first or final settling basin, it is necessary to remove these efficiently. In order to remove these scums, the applicant has previously proposed the following scum removal device. 13 and 14 show a scum removing device S previously proposed by the present inventor. In the rectangular sedimentation basin equipped with this device, a plurality of (4) sprocket shafts 200 with the axis centered in the width direction of the pond, and two sprockets 201 mounted around each shaft 200, Two left and right chains 202 are endlessly hung through these sprockets 201.

The device is driven by using some or all of the flights 203 ... Attached to the chain 202, and attracts and removes scum (floating matter) on the water surface. There is. The scum removing device includes a trough 205, a guide support sheet 206, a weir 208, and a transmission mechanism 209. The trough 205 is a long trough having a square cross-sectional shape with an opening on the upper side and a part on the front side, and is fixed in the pond so that its longitudinal direction is oriented in the width direction of the pond.

Like the trough 205, the guide support sheet 206 is made of rubber and is made of rubber, and is attached to the front side of the trough 205 in an overhanging manner and can be bent up and down by elastic deformation. .. The weir 208 is a long hollow having a substantially triangular shape, and a foam material may be filled therein, and the weir 208 is extended to the front side of the elastically deformable guide support sheet 206. It is attached so that it can move up and down with the water surface 207 as a boundary while being supported by the seat 206.

A response mechanism 209 swings the weir 208 up and down. The response mechanism 209 includes a rotary shaft 210 and a drive arm 211. The rotary shaft 210 is spanned across the width of the pond, and the drive arm 211 is one arm extending from one side of the rotary shaft 210 toward the front. A cam plate 213 is provided at the tip of the drive arm 211. The cam plate 213 has a cam surface at the bottom, and the cam surface is a continuous cam surface with two protrusions 213a and 213c and a recess 213b between them. This cam plate 213 is moved to interlock the drive arm 211 and the actuating arm 212, and the weir 207 is pushed down via the rod 224 and the interlocking arm 225. This is to project from one end of the flight (moving member) 203. It is a roller 214. The roller 214 is attached by a bracket provided at one end of the flight 203 on the cam plate 213 side.

The operating arm 212 constitutes a transmission mechanism together with the rod 224 and the interlocking arm 225, and is an arm extending in the direction of the trough 205, which is the opposite direction to the drive arm 211, and has two left and right arms. There is.

The scum removing device S operates as follows. A chain 202 is driven by driving a motor (not shown) on the pond, and flights 203 ... Arranged on the outer periphery of the chain 202 at regular intervals are circularly driven at a slight speed in the arrow direction. Flight 203 ... scrapes sludge that has settled at the bottom of the pond and guides it into the pit, and the sludge that is guided is removed outside the pond by a pump (not shown). The upward flight 203 pushes up the cam plate 213 by the roller 214 added to the side.

The roller 214 moves the member 213 up and down while contacting the copying member 213 in the order of the protrusion 213 a → the recess 213 b → the protrusion 213 c. As a result, when the roller 214 hits the protrusion 213a in the first stage, the cam plate 213 and the drive arm 211 are greatly pushed up and the operating arm 212 is pushed down, and the weir 208 is passed through the rod 224 and the interlocking arm 225. Push down below the surface of the water. At this time, the scum on the water surface, both large and small, is guided to the inside of the trough 205 as the water is sucked, and then is removed to the outside of the trough 205.

When the roller 214 comes to the recess 213b, the cam plate 213 and the drive arm 211 are temporarily lowered, and the operation arm 212 is raised. As a result, the weir 208 slightly rises and its upper end comes below the surface of the water, so that the amount of water up to that point becomes small. Since the amount of water decreases, but the water speed increases on the contrary, the suction force on the scum acts even on the scum on the distant water surface and smoothly draws it near the trough.

When the roller 214 comes to the protrusion 213c in the second stage, the drive arm 211 with the cam plate 213 moves up again and the operating arm 212 moves down. As a result, the weir 208 is lowered and a large amount of the drawn scum 204 is guided into the trough 205. Since the cam plate 213 is thus stepped, the scum 204 can be pulled from the suction to the suction very effectively.

The scum removing device S is installed one for each pond, and the troughs 205 are provided so as to be inclined in one direction, and these troughs 205 ... Are communication troughs. It is connected. The scum and water that have flowed into the trough 205 installed at a high position in the inclination direction flow in the order of the communication trough → the next trough 205 → another communication trough → the next trough 205 .... Further, the scum and water flowing into the intermediate trough 205 shown in the figure flow into the next trough 205 from the communication trough 230 on the lower side in the inclination direction. All of these scum and water flow to the lower side of the slope and are discharged outside the pond. In addition, the communication trough is designed to fix a part of the side wall of the pond through a hole made through it.

[0012]

The scum removing device S is configured to suck and remove the scum by the floating / sinking motion of the weir 208, but this scum is not always guided smoothly in the direction of the trough 205. There are many. Therefore, there is one in which a shower is injected in the direction of the trough 205 to effectively guide the scum. However, conventional shower devices have not only a main pipe that always flows water, but also an induction pipe that guides water from the main pipe to the nozzle, and a valve that controls the flow of water. Since it was configured so that it could be operated by, it was structurally complicated and a high device, which was not suitable for implementation.

The present invention has been made in order to solve such a problem, and an object thereof is to enable the device to be manufactured at a low cost with a simple structure.

[0014]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention proposes that a trough-shaped trough is fixed near the water surface of a treatment pond equipped with a moving member with its front opening below the water surface. Is equipped with a weir that attracts and blocks the scum floating on the water surface and floating on the water surface in the trough. A shower device for a scum removing device, comprising: a cylinder, a drive arm that responds to the moving member, and an actuating arm that converts the motion of the drive arm into a weir up and down motion through the rotary cylinder. A valve that opens and closes in response to the moving member and a nozzle that injects a shower toward the water surface toward the trough, and when the valve is in a flow state, at least the internal space of the rotary cylinder Through Noz Characterized in that it is configured to inject a shower from.

[0015]

[Action]

 Like the solution means, the rotary cylinder is used as it is as one of the water induction systems, and the opening / closing means of the valve is made not to be a dedicated one but to be responded by a member moving in the treatment pond. The whole structure becomes simple.

[0016]

【Example】

 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, 1 is the initial or final settling basin (treatment basin), 1 is a rectangle when viewed from above, and 2 is its longitudinal side wall. In this settling basin 1, a plurality of rotating shafts 3 ... And sprockets 4 ... are provided, and two chains 5 are laid on the left and right of the sprockets 4 ... A plurality of flights 6 ... Are arranged at regular intervals in the direction. This flight 6 can be made of wood, plastic, or any other material.

At the right end of the flight 6 in the traveling direction, a roller 9 is provided especially for this removing device via a bracket (not shown).

A trough 10 having a square cross section is fixedly provided at an end portion of the sedimentation tank 1 in a longitudinal direction so as to be orthogonal to the longitudinal direction. The trough 10 is supported by being connected with flanges 10a, 11a by communicating troughs 11, 11 which penetrate through the side wall 2 and are fixed by a bracket.

The trough 10 is open at the upper side and the front upper side, and side plates 12 extending forward from the flange 10a are provided at both ends in the longitudinal direction. The front opening is located below the water surface 15. A support shaft 14 slightly longer than the trough 10 is rotatably mounted between the side plates 12. The support shaft 14 and the front wall 10b of the trough 10 are closed by a rubber seal 16.

A weir (float) 17 having a plate-shaped base and a triangular hollow cross section at the front is fixed to the support shaft 14 at the base and is rotatable. The weir 17 is a long one extending between the side plates 12, and the side seal 19 attached to the side end surface thereof slides on the side surface of the trough 10. The weir 17 floats and sinks at the water surface 15 as a boundary, and attracts or blocks the scum floating on the water surface. The support shaft 14 is securely supported by a bearing (not shown) fixed to the trough 10.

On the other hand, the mechanism for moving the weir 17 up and down is configured as follows. First, the response mechanism 20 includes a rotary cylinder 21 and a drive arm 22. The rotary cylinder 21 is bridged across the width of the pond, and the drive arm 22 is one arm extending from one side of the rotary cylinder 21 toward the front. A cam plate 23 is provided at the tip of the drive arm 22. The cam plate 23 has a cam surface at the bottom, and the cam surface is a continuous cam surface with two protrusions 23a and 23c and a recess 23b between them.

The cam plate 23 is moved to interlock the drive arm 22 and the operation arm 24, and the weir 17 is pushed down through the rod 25 and the interlocking arm 26. One end of the flyt (moving member) 6 is It is a roller 9 protruding from. The roller 9 is attached by a bracket provided at one end of the flight 6 on the cam plate 23 side. The operating arm 24 constitutes a transmission mechanism together with the rod 25 and the interlocking arm 26, and is an arm extending toward the direction of the trough 10 which is the opposite direction to the drive arm 22, and has two left and right arms.

By the way, on the processing pond 1, a main pipe 30 is horizontally installed so as to cross these. This pipe 30 is fixed on the side wall 102 by a bracket 31 by means of a flange joint so that water is constantly supplied. The rotary cylinder 21 has its end portion made blind by an axis, and a valve 32 is fixed on one end portion thereof. A flexible first pipe 33 whose direction can be changed is connected between the valve 32 and the main pipe 30. A lever 34 extending downward from the valve 32 faces the roller 9 so as to hit it.

Three second pipes 35 are connected to the rotary cylinder 21, each second pipe 35 is flexible, and a nozzle 36 is attached to the tip thereof. As shown in a preferable example in FIG. 5, the nozzle 36 includes a main body portion 36a having a passage that is open at the upper side and widens toward the tip end, and an upper plate 36b that covers the upper surface of the main body portion 36a in an elastically deformable manner. I have it. Foreign matter may be clogged in the nozzle 36. In this case, the upper plate 36b escapes and is deformed, and pressure from the rear acts to remove these foreign matter from the tip opening. The pressing force of the upper plate 36b can be adjusted by the bolt 37, and an elastic member such as a spring may be interposed between the bolt 37 and the upper plate 36b.

The supply water always flows through the main pipe 30, and the water reaches the valve 32 through the first pipe 33 of each pond. In each pond, the same operation as described in the above-mentioned prior art is performed. Then, when the roller 9 kicks the lever 34, the valve 32 opens, water is guided from the main pipe 30 to the rotary cylinder 21, and the shower is vigorously jetted from the tip end through the passage in the nozzle 36. As a result, the shower blows scum on the surface of the water toward the trough 10, and the scum is effectively attracted when the weir 17 sinks below the surface of the water.

3 and 4 show another embodiment of the present invention. In this embodiment, the main pipe 30 of the previous embodiment is omitted, and the rotary cylinder 21 is the main pipe. The rotary cylinders 21 are connected to each other by a flexible connection pipe 40 to constantly supply water, and the rotary cylinder 21 has three pipes 41 ... Nozzle 36 is attached to the tip of the protrusion. Valves 32 are attached to each pipe 41, and these valves 32 ... Are opened and closed by a shaft 42. A lever 34 is attached to the shaft 42 so as to respond to the direction of the trough 10 by the flight 6 and return by a spring.

The nozzles 36 are arranged so as to be displaced from the trough 10 in a direction away from the trough 10 as compared with the above-described embodiment. It should be noted that if a pad is attached to the flight 6 at a position corresponding to the lever 34, it is resistant to wear. When the lever 34 is kicked by the flight 6, the valves 32 ... Are opened through the shaft 42, water from the rotary cylinder 21 is supplied to the nozzle 36 through the pipes 41, and water is jetted forward.

FIG. 6 and FIG. 7 show an embodiment which can be configured even in a scum removing device of a system driven at the bottom of a pond. In this embodiment, brackets 50, 50 are fixed on the rear portion of the trough 10, a main pipe 51 is passed therethrough, and a common cylinder 52 is rotatably supported. Three operating arms 53 project forward from the common cylinder 52, the right arm 53 is connected to the weir 55 by a rod 54, and a chain is provided between the tip of the arm 53 and the drive arm 56 at the bottom of the pond. 57 is connected. At the bottom of the pond, the drive arm 56 is supported by the bracket 58, and the cam plate 59 is attached to the tip thereof.

The cam plate 59 is kicked down by the roller 61 of the flight 60 traveling on the bottom of the pond, and the chain 57 is pulled down. When one of the operating arms 53 is pulled down, the weir 55 is pushed down below the surface of the water through the common cylinder 52 and the like. Also in this embodiment, the weir 55 is supported by the rotating shaft 62. When the roller 61 passes the cam plate 59, the chain 57 is lifted by the buoyancy of the weir 55 (the balancer may be added) and the cam plate 59 returns to the original horizontal state.

The bracket 50 is provided with a first pipe 64 for supplying the water from the main pipe 50 to each pond to the valve 63, while a second pipe 65 from the valve 63 is supplied laterally to the pond. It is connected to the cylinder 66. A flexible pipe 68 having a nozzle 67 is attached to the supply cylinder 66. Then, the lever 69 from the valve 63 is responsive to the one operating arm 53 to open and close the valve 63.

That is, when the operating arm 53 is lowered, the valve 63 is opened, and water is supplied in the order of the main pipe 51 → the first pipe 64 → the valve 63 → the second pipe 65 → the supply cylinder 66 → the nozzle 67, and the nozzle 67. Shower is jetted from the water surface. When the operating arm 53 rises, the valve 63 is closed and the injection from the nozzle 67 is stopped.

8 and 9 show an embodiment in which the main pipe 51 is omitted and the common cylinder 52 is used as the main pipe. This makes the structure much simpler.

FIG. 10 and FIG. 11 show another embodiment, which is an example without a mechanism such as a drive arm and an operating arm. In this embodiment, an inverted L-shaped arm 72 is attached to both ends of a rotary shaft 71 provided on the trough 70 and extends forward. At the tip of the arm 72, a tank 73 having a triangular hollow shape and a bottom and an upper opening is attached. This tank 73 is provided with an overflow weir 74 at the upper end so that 80% of the supplied water, for example, flows out. An adjusting plate 75 for controlling the flow amount is attached to an oblique side surface of the tank 73, and a gradient plate 76 for flowing an overflow in the direction of the trough 70 is attached below the adjusting plate 75. On the lower side of the plate 76, a small hole 77 through which 20% of the supplied water flows out is opened.

The structure for supplying water to the tank 73 is as follows. A main pipe 78 is passed through the pond and is supplied from the pipe 78 through a valve 79. The lever 80 of the valve 79 is kicked by the roller 82 of the flight 81 and returned by the spring.

The water from the main pipe 78 is supplied into the tank 73 through the pipe 83 when the lever 80 is kicked and the valve 79 is opened. Although a small amount of water flows out through the small holes 77, since the supply amount is larger, the water is accumulated in the tank 73 and the tank 73 comes down. As a result, the tank 73 is lowered via the arm 72, the weir 84 is sunk, and the scum flows in. Since the water in the tank 73 gradually flows out over the overflow weir 74, this water flows through the slope plate 76 and is made to flow through the scum toward the trough 70. Among them, the lever 80 is returned and the supply of water into the tank 73 is stopped. Then, the water flows out only through the small holes 77, and the water in the tank 73 decreases. As a result, the weir 84 and the tank 73 are lifted together with the buoyancy of the weir 84, and the scum guiding is also stopped.

In FIG. 12, the shower device 90 is arranged on the side of the pond, and the shower is obliquely jetted toward the trough 91 to prevent the escape of the scum from the side of the flight 92 to the rear. Showing things.

In the above-mentioned embodiment, the member is configured to move the flight, but other moving members include, for example, a rotating shaft of a chain, a sprocket, and a chain.

Since the present invention is configured as described above, the device has a simple structure and can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is an overall plan view of an apparatus showing an embodiment of the present invention.

[Fig. 2] Its vertical section

FIG. 3 is a plan view showing another embodiment.

FIG. 4 is a sectional side view thereof.

FIG. 5 is a perspective view showing a specific example of the nozzle.

FIG. 6 is a plan view showing another embodiment.

FIG. 7 is a side sectional view thereof.

FIG. 8 is a plan view showing another embodiment.

FIG. 9 is a side sectional view thereof.

FIG. 10 is a plan view showing another embodiment.

FIG. 11 is a side sectional view thereof.

FIG. 12 is a plan view showing another embodiment.

FIG. 13 is a side sectional view showing an example of a conventional scum removing device.

FIG. 14 is a perspective view showing the response mechanism.

[Explanation of symbols]

 1 Treatment basin (sedimentation basin) 6 60 Members moving in the treatment basin 10 Trough 15 Water surface 17 55 Weir 21 Rotating cylinder 22 Drive arm 24 Working arm 32 63 63 Valve

Claims (1)

[Scope of utility model registration request] 1. A trough-shaped trough is fixed near the water surface of a treatment pond provided with a moving member with its front opening below the water surface, and floats and sinks near the water surface near the front opening of this trough. A weir is provided to attract or block the scum floating on the water surface into the trough, and a rotating cylinder is horizontally installed in the treatment pond, and the rotating cylinder moves as described above. A shower device for a scum removing device, comprising: a drive arm that responds to a member; and an actuating arm that converts the motion of the drive arm into a weir ups and downs movement through the rotary cylinder, the shower device responding to the moving member. A valve that opens and closes
A nozzle for injecting a shower toward the water surface toward the trough, and configured to inject the shower from the nozzle through at least the internal space of the rotary cylinder when the valve is in a flow state. Shower device for scum removal device.