JP2577754Y2 - Sludge treatment equipment in sedimentation tanks - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating sludge and the like in which sludge collected at the bottom of a water treatment sedimentation tank and scum floating on a liquid surface are scraped by the same driving means.

[0002]

2. Description of the Related Art Conventionally, in a treatment sedimentation tank for tap water, sewage, etc., a sludge settled at the bottom of the tank and a facility for removing scum floating on the liquid surface have been used as a facility as shown in FIG. Is widely known.

[0003] That is, a rake plate 3a is attached via a link mechanism 3b so as to be able to move up and down, and a trolley 3 is laid in the longitudinal direction of the bottom of the settling tank 1 (the left side is the front and the right side is the back in the figure). 5 and a pair of left and right endless ropes 2 (only one side is shown in the figure) are passed over a plurality of sheaves 4 provided on the front and rear tank walls, and a motor on the tank front wall is provided. Each of the ropes 2 is wound around a pair of traction drums 6 driven by M ₁ , and the link mechanism 3 b of the shaving plate 3 a is connected to these ropes 2. An intermediate wall 10 having a height not reaching the tank bottom having a gutter 10a is divided into a front room 1A and a rear room 1B,
On the water surface of the front room 1A, there are sprockets 7a arranged in front, rear, left and right (the right one is not shown).
b, and a scum collector 7 in which a large number of shaving plates 7c are mounted at intervals between the left and right chains 7b, and a motor M ₂ having a rear sprocket 7a provided on the intermediate wall 10; It operates by a transmission mechanism.

The sewage to be treated enters the front chamber 1A of the settling tank from the intake tank D through a slit in the front wall of the tank, and the sludge in the sewage settles to the bottom of the tank while the light scum is on the water surface. Other water flows into the rear chamber 1B through the lower side of the intermediate wall 10, and the sludge not removed in the front chamber 1A further sinks to the bottom of the tank. The rising water flows out to a discharge tank E from a gutter 9 provided on the water surface of the rear chamber .

[0005] In the sludge removal operation in the above process, the scraper truck 3 is first placed at the rear end (right end), and the traction drum 6 is driven to pull the rope 2 in the direction of the solid line arrow a. The scraping plate 3a is erected, and the sludge N deposited on the bottom of the tank is moved toward the front end while being scraped, and the scraped sludge N is dropped into the sludge collection pit 1D. 8a, the truck 3 is stopped for a certain period of time by the operation of the controller 8 thereabove, and the discharge valve V is opened to discharge sludge.
After a predetermined time, the traction drum 6 is reversed to pull the rope 2 in the direction of the dotted arrow b, and by the traction action, the shaving plate 3a is pulled up sideways, and the bogie 3 travels toward the rear end side,
When the rear end is reached, the detector 8a on the rear end side comes into contact, the controller 8 operates to pull the rope 2 again in the direction of the solid arrow a, and the bogie 3 travels to the front end side while scraping sludge by the shaving plate 3a. Work is repeated.

On the other hand scum collector 7 disposed in the water surface portion is rotated in the direction of constant chain line arrow C by the motor M ₂ and the transmission mechanism, floating on the water surface portion by scraper 7c fixed to the chain 7b on both sides The scum to be scraped is scraped toward the center of the tank and discharged into a gutter 10 a provided on the intermediate wall 10.

[0007]

However, in the above-mentioned conventional apparatus, since the drive system of the sludge scraper and the drive system of the scum collector are separate, equipment costs and set space are increased, and maintenance is troublesome. And, the scum collector requires a large number of shaving plates equal to the tank width, which requires large equipment, increases costs and increases power consumption.

[0008] Therefore, the present invention proposes a driving device and a scum collection.
It is an object of the present invention to reduce the cost of equipment and power by reducing the set space and saving the set space, facilitating maintenance, and reducing the cost of equipment.

[0009]

According to the present invention, the sedimentation tank is divided into two chambers communicating with each other at the bottom part by an intermediate wall, and a sludge scraping truck can be run on the bottom part of the sedimentation tank. On the other hand, a scum collector is installed on the water surface of the chamber on the side where sewage flows into, and as a device for treating sludge and scum, it is installed on the front end wall of the sedimentation tank.
A main shaft driven by one motor
On the shaft, a pair of left and right first drums and outer positions of each first drum
Are provided with a second drum, and the first drum is provided with
Wrap the first ropes for car towing and each second drive
Water near the front end wall of the settling tank
A ska suspended over a guide sheave on the water surface in front of the wall
Wrap the second rope of the tow collector
The scum collector above the beam and car
Brackets under the side plates at both ends with rings and the beam main body
With a single shaving plate that is rotatably mounted up and down
The scum collector is set on the side wall of the sedimentation tank by wheels.
Along the rail provided between the front end wall and the intermediate wall of the tank
It is not possible to travel, and sleeves are provided on both sides of the beam main body.
Attach them in the crossing state, and insert the second ropes respectively.
Through these second ropes, the front side of the sleeve
And secure the stopper on the rear side.
Shaft plate holding bar bent forward at a distance
Is fixed with a stopper, and the sludge scraping cart and scumco
Tractor is driven by one spindle at the same time
And the rear of the scum collector by the second ropes
When pulling to
During towing, the squid is turned upward by the
It is characterized by being moved and supported .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 6. The same parts are denoted by the same reference numerals, and for convenience of description, FIGS. In FIG. 5, the left side is the front, the right side is the rear, and in FIG. 6, the upper side is the front side, the lower side is the rear side, and the direction perpendicular to this is the left and right. In FIG. 1 and FIG. 2, reference numeral 1 denotes a sedimentation tank. As described above, an intermediate wall 10 having a height not reaching the tank bottom and having a gutter 10a at the front upper part is provided in the center part in a transverse state. The sewage to be treated is firstly divided from the intake tank D into the front chamber 1A, passes through the lower side of the intermediate wall 10, and flows into the rear chamber 1B, during which the sludge settles to the bottom of the tank and the scum is on the water surface. The sludge and the scum are scraped off by the following apparatus, and the treated water flows out to the removal tank E.

At the bottom of the sedimentation tank, a rail 5 is laid between the front and rear walls of the tank.
A trolley 3 is provided so as to be able to run up and down by connecting a shave plate 3a via a link mechanism 3b so as to be able to move up and down. In addition, as shown in FIG. Is supported over a plurality of guide sheaves 4 provided on the front and rear walls, and is supported by a main shaft 11 laid on the front wall of the tank in a left-right direction (perpendicular to the paper surface). The driven trolley is wound around the first drum 6 on the left and right sides of the trolley, and the link mechanism 3a of the trolley 3 is connected to an appropriate position of the rope 2, and the trolley is turned on the front and rear walls of the tank. Detector 8a and a controller 8 are provided.

Guide sheaves 14 are provided in pairs at right and left positions on the water surface near the front wall of the settling tank 1 and on the water surface and on the front water surface of the intermediate wall 10. Endless second ropes 12 are wound around the main drums 11 on the front wall of the tank as shown in FIG. The second drums 13 are wound around the second drums 13 provided at the respective positions, and the diameters of the second drums 13 are formed at a predetermined ratio (1/2 in the illustrated example) with respect to the diameter of the first drum 6. ing.

As shown in FIGS. 3 and 6, a portion between the intermediate wall 10 and the front wall inside the left and right side walls 1c of the sedimentation tank 1,
The second rails 15 are respectively laid near the water surface via the brackets 21, and the following scum collector A is arranged on the rails 15 so as to be able to run via the wheels 20.

As shown in FIGS. 3 to 6, the scum collector A has a cylindrical beam main body 16 which crosses the sedimentation tank 1, and a side plate 17 fixed to both ends thereof and having wheels 20 rotatable back and forth, and a lower side of the beam main body 16. 1 that is rotatably mounted on a bracket 16a vertically suspended at
The shaving plate 18 has a lower half part which penetrates into the water surface in the tank when it is hung down as shown in FIG. At the position where the ropes 12 intersect, thin sleeves 22 are attached so as to cross the center, respectively, and the ones of the second ropes 12 that are closer to the water surface are inserted through these sleeves 22, respectively.

The lower second through each sleeve 22
As shown in FIG. 4 and FIG. 5, a stopper 22 is fixed to the front side of the sleeve with a sleeve 22 as shown in FIG. 4 and FIG. The tube shaft portion 24a at the upper end of the sleeve 24 is loosely fitted to prevent the rope from being twisted, and is attached by the front and rear stoppers 24b. When the front stopper 23 comes into contact with the front end of the sleeve 22, the rear shaft Tube shaft 2
Reference numeral 4a designates a predetermined distance from the rear end of the sleeve 22, and each squeezer presser bar 24 is formed in an angle shape by an upright portion hanging down from the tube shaft portion 24a and a horizontal portion extending forward from the lower end thereof. And the front end of the horizontal
A wire 25 is attached to a required position 8 so that the scraper 18 does not rotate upward due to resistance during the scraping operation.

Incidentally, the ratio of the diameter of the first drum 6 to the diameter of the second drum 13 provided on the main shaft 11 on the front wall of the sedimentation tank 1 is determined while the scraping truck 3 travels from the rear end to the front end of the sedimentation tank 1. The scum collector A is selected so as to travel from the front position of the intermediate wall 10, that is, from the center position of the tank to the front end. The scum collector A is controlled by the front and rear controllers 8 in synchronization with the trolley 3. ing.

However, when starting the processing operation,
The trolley 3 is arranged at the rear end of the sedimentation tank 1 in FIG. 1 and the scum collector A is arranged at the front side of the intermediate wall 10. In this state, the motor M is started, and the first drum 6 and the second drum 1 on the main shaft 11 are driven via the transmission mechanism T.
When the trolley 3 is rotated clockwise, the trolley 3 and the scum collector A travel in the direction of the solid line arrow, that is, in the direction of the front wall due to the pulling action of the first rope 2 and the second rope 12, and at that time, In the bogie 3, the shaving plate 3a is erected through the link mechanism 3b, and moves forward while scraping the sludge N deposited on the bottom of the tank, reaches the front end, and transfers the sludge N to the collecting pit 1D provided at the bottom of the front wall. Drop,
At that time, the front surface of the carriage 3 comes into contact with the detector 8a on the front wall side.

On the other hand, in the scum collector A at the water surface of the front chamber 1A, the stopper 24b of the pipe shaft portion of the shaving plate holding rod 24 is moved by the pulling of the second rope 12 in the direction of the solid line arrow as shown in FIG. Sleeve 2 attached to main body 16
2 and at the same time, the tip of the horizontal portion of the squid presser bar 24 strikes the squid 18 and bends it on the water surface. In this state, the scum collector A travels in the direction of the solid line arrow to reach the front end.

When the scraping cart 3 contacts the detector 8a on the front wall side as described above, the scraping cart 3 and the scum collector A are temporarily stopped, and the sludge N collected in the mud collecting pit 1D during that time is discharged. V opens and is discharged out of the system.

After a predetermined time, the first drum 6 and the second drum 13 are reversed, and the truck 3 and the scum collector A are towed through the first rope 2 and the second rope 12 in a direction indicated by a dotted arrow in FIG. At that time, in the scraping truck 3 at the bottom, the scraping plate 3a is pulled up in a horizontal state by the link mechanism 3b and retreats, and in the scum collector A, as shown in FIG.
2 is in contact with the sleeve 22 of the beam main body 16, while the pipe shaft portion 24 a of the
4b is separated from the sleeve 22, and the scraper plate 18 hangs below the water surface due to its own weight and the pulling operation of the wire 25, and recedes while scraping the scum floating on the water surface portion, and moves the scum to the front surface of the intermediate wall 10. It flows into the formed gutter 10a and is discharged out of the system.

When the scraping cart 3 contacts the detector 8a on the rear wall side, the scraping cart 3 stops at the rear end position and the scum collector A stops at the front position of the intermediate wall 10, and after a predetermined time, By the operation of the controller 8,
The direction in which the first rope 2 and the second rope 12 are pulled changes, and the scraper truck 3 moves forward while raising the scraper plate 3a, while the scum collector A advances again while bending the scraper plate 18 upward. Such an operation is repeated at regular intervals.

In the illustrated example, the intermediate wall 10 is connected to the settling tank 1.
Is shown at the center, but it can be appropriately selected depending on the installation location, and accordingly, the first drum 6 for towing the trolley 3 and the second drum for towing the scum collector A The ratio of the diameters of the drums 13 is determined to correspond. The ropes 2 and 12 for pulling the trolley 3 and the scum collector A may be a chain or a narrow belt.

[0023]

According to the present invention, the sedimentation tank is divided into two chambers which communicate with each other at the bottom by an intermediate wall, and a sludge scraping truck is provided at the bottom of the sedimentation tank so as to be movable.
A scum collector is arranged on the water surface of the chamber on the side where sewage flows in, and it is configured as described above to treat sludge and scum.
In comparison with the drive equipment and scum collector equipment and parts
Omitted, the configuration is simple and compact,
Space and equipment costs can be reduced,
And the scum collector has only one
Since it has only a shaved board, it does not become large and can be made at low cost
Easy to move, and at the time of transfer, it was installed on the side wall of the settling tank
Because it runs on rails, the support is stable and
The scum is scraped securely without returning, and when returning to the front
Since the shaved board is supported above the water surface by the presser bar,
It does not receive resistance due to sewage, operates lightly, and consumes little power.
There are advantages such as not .

[Brief description of the drawings]

FIG. 1 is a cut-away side view of a preferred embodiment of the present invention in which sludge is being scraped.

FIG. 2 is a cut-away side view of a state where the scum is being scraped.

FIG. 3 is a front view of a half portion of the scum collector according to the present invention.

FIG. 4 is a side view taken along the line XX of FIG. 3 in a state where the shaving plate has been turned laterally.

FIG. 5 is a side view along the line XX of FIG. 3 in a state where the shaved board is hung down.

FIG. 6 is a plan view of a half of a sedimentation tank.

FIG. 7 is a cut-away side view of a conventional device.

[Explanation of symbols]

 Reference Signs List 1 sedimentation tank 2 first rope 3 scraper truck 3a scraper board 5 rail 6 first drum 8 controller 10 intermediate wall 11 main shaft 12 second rope 13 second drum 15 rail 16 beam main body 17 side plate 18 scraper board 20 wheels 22 sleeve 24 Oyster presser bar A Scum collector M Motor

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B01D 21/00-21/34

Claims (1)

(57) [Scope of request for utility model registration] 1. The sedimentation tanks 1 are placed at the bottom of each other by an intermediate wall 10.
And divided into two chambers 1A and 1B which communicate with each other.
At the bottom of the car, a sludge scraper 3 is installed so that it can run.
On the other hand, the scum collection
Arranger A to treat sludge and scum
In the apparatus, one motor M on the front end wall of the settling tank 1
A main shaft 11 driven by the main shaft 11 is installed.
The right pair of first drums 6 and the first
Two drums 13 are provided, and the first drum 6
Wrap the first ropes 2 for towing the trolley and each second
The drum 13 has a water surface near the front end wall of the sedimentation tank 1 and an underwater surface.
Guide sheave 14 provided on the front surface of the intermediate wall 10
Ropes towed by the scum collector passed over
12 and wind the scum collector A.
Sides at both ends having beam body 16 and wheel 20 traversing tongue 1
Under the plate 17 and the beam main body 16 via a bracket 16a
Formed with a single shaving plate 18 that can be pivoted up and down
And the scum collector A is set in a sedimentation tank by wheels 20.
1 between the front end wall of the tank and the intermediate wall 10 along the side wall 1c.
It is possible to travel on the rail 15 provided, and
Sleeves 22 are attached to both sides of
Then, each of the second ropes 12 is inserted,
For the ropes, a stopper 23 is provided at the front side of the sleeve 22.
And a certain distance from the stopper 23 on the rear side.
Upper end of the shaving plate presser bar 24 bent forward
4a is fixed by the stopper 24b, and a sludge scraping cart is provided.
3 and scum collector A by one spindle 11 at the same time
Run in the front-rear direction, and
When pulling the cam collector A backward,
8 upright on the surface of the water,
Is supported by rotating the water above the water surface with a squid presser bar 24.
An apparatus for treating sludge or the like, characterized in that: