JPS59142811A - Scraping-up device for sludge - Google Patents

Abstract

PURPOSE:To make installation cost more inexpensive, to make a control system simpler and to facilitate maintenance and inspection as well as to enable stable operation of the device for a long time by constructing a movable arm to change its tilting condition automatically at a scraping stage and a nonscraping stage of sludge by interlocking with the reciprocating motion of a traveling truck. CONSTITUTION:A movable arm 6 which has finished scraping up of precipitate is pulled up by receiving its guiding roller 8 with an upwardly directing rail 15 provided to one end side of a settling basin 1. At this stage a locking device 11 installed on the travelling truck 5 is moved inward by an upper inwardly directing guide 16 to detain the movable arm 6 at a pulled-up condition. At the other end of the settling basin where a backward movement of the traveling truck 5 comes to a finish stage. The movable arm 6 is received by a downwardly directing rail 17 provided at the other end. At this stage, the locking device 11 is moved outward by an upper outwardly directing guide 18 at the other end to release the detention of the movable arm, and the movable arm is tilted for scraping up along a downward directing rail 17 corresponding to the forward movement of the travelling truck 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sludge scraping device for scraping and removing sludge such as sediment and scum in a sedimentation tank for treating water, sewage and industrial wastewater.

Conventionally, as a sludge scraping device for this type of settling tank, etc.
A complete set of sludge scrapers is known.

This sludge scraper is the length of a settling basin formed in a straight line.

A movable arm having a sediment scraping plate at the lower end and a scum scraping plate at the upper end is pivotally supported to be swingable in the traveling direction on a traveling carriage that reciprocates overflowing in the hand direction. However,
In this sludge scraper, when the traveling cart moves forward, the Shunyo lobe that supports the movable arm is loosened, and the movable arm is allowed to hang down so that the lower end of the sediment scraping plate comes into sliding contact with the bottom surface. When the traveling cart returns, the hoisting rope that supports the movable arm is hoisted up, the movable arm is tilted so that the lower end of the scum scraping plate is submerged below the liquid surface, and I try to collect the scum floating on the ground. Therefore, a winding device for the lobe of the first winding section and its drive device are required separately, which increases equipment costs, and the first winding device must be controlled in conjunction with switching the traveling direction of the traveling truck, which requires a large number of It had many drawbacks, such as requiring limit switches, making the control system complicated and prone to failure, and requiring time for maintenance and inspection.

The present invention has been proposed in view of the above-mentioned drawbacks of the conventional art, and includes a method in which the guide roller of the movable arm that has finished scraping up the sediment is received by an upward rail provided at one end of the sedimentation tank, and the movable arm is pulled up. At that time, the locking device provided on the traveling bogie is moved inward by the upper self-travel guide to lock the movable arm in the raised state, and at the other end of the sedimentation basin where the traveling bogie has finished going back, the movable arm is moved inward. The movable arm is received by the downward rail provided at the other end, and at that time, the locking device is moved outward by the upper outward guide at the other end to release the locking of the movable arm. The movable arm is tilted into a raking state along the lower rail, so that the tilting state of the movable arm during raking and propagation is automatically adjusted in conjunction with the reciprocating movement of the traveling carriage. Unlike the conventional method, there is no need for a winding device for the winding rope and its driving device, and it is sufficient to simply provide an upper guide on which the guide roller is placed, a front guide, and a movable guide. We would like to provide a sludge scraper that has lower equipment costs, does not require the use of many limit switches, has a simpler control system, is easier to maintain and inspect, and can be used stably for a long period of time. It is something to do.

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a settling tank, and a sludge bit 3 is provided near the front wall of the bottom 2 of the settling tank for receiving the collected sludge and discharging it outside the settling tank 1. Parallel rails 4, 4 are installed along the longitudinal direction of the soil on both sides.
is laid, and a traveling truck 5 that reciprocates over the sedimentation tank 1 is mounted on this rail 4.4.

The traveling truck 5 has a pair of movable arms 6.6 with axes in the same direction at a required interval in a direction transverse to its traveling direction.
is pivoted and installed vertically, and the bottom surface 2 of the sedimentation tank 1 is located at its lower end.
A sediment removal board 7 for scraping up the sediment accumulated thereon and a guide roller 8 for moving the sediment removal board 7 smoothly on the bottom surface 2 of the sedimentation tank 1 are provided.

In addition, as shown in FIGS. 3 to 8, the traveling bogie 5 has a pair of rails z9 long in the direction transverse to its traveling direction.
A locking device 11.11 is mounted on this rail 9.9 in a movable manner via wheels 10.10. These locking devices 11.11.

A roller 12.12 for moving the locking device 11 in contact with an upper self-moving guide and an upper outward-moving guide, which will be described later.
and a hook member 13.13 that locks the movable arm 6 in its raised position is inserted into the hole 14 between the rails 9, 9.
It is provided to protrude further downward.

On the other hand, as shown in FIGS. 5 and 6, a guide roller 8 of a movable arm 6 is received on the inner wall of one end of the settling tank 1, that is, the side where the sludge pit B is provided.

The upward rail 15.15 for guiding this upward is the bottom surface 2.
The locking device 11 is fixedly installed so as to be tilted upward, and is located at the upper part nearer to one end than the upward rail 15.
An upper self-propelled guide 16.16, which is formed to be long in the horizontal direction so as to gradually project inward, is fixed to one end side so as to touch the outside of the roller 12 and move it inward. There is. Further, as shown in FIGS. 6 and 7, the inner side wall of the other end of the settling tank 1 has an upper portion 17α that receives the guide roller 8 of the movable arm 6 in the raised state and slightly lifts it. Following this, a downward rail 1Z17 is fixedly provided on one end side and is formed to be inclined to the bottom surface 2, and above the rail 17 is in contact with the inside of the roller 12 of the locking device 11, The upper outward guide 18 is formed to be long in the horizontal direction so as to gradually protrude inward from the other end to the one end so as to move the guide outward.
18 are fixedly installed.

In the present invention, the sediment scraping board 7 and the movable arm 6
In addition to the sediment scraping mechanism, a scum scraping mechanism can also be provided. Namely.

As shown by the chain lines in Figs. 5 and 4, the scum scraping board 1
9 is pivotally attached to the pivot joint of the movable arm 6, and when the movable arm 6 is in the raking state as shown in FIG. 3, K is exposed above the water surface, and the movable arm 6 When it is in a raised state like this, its lower part is immersed in water,
It is fixed to the movable arm at an angle that is open to the movable arm 6, and is linked to the swinging movement of the movable arm 6.

When the scum scraping plate 19 is installed in parallel in this way, it goes without saying that a scum schema (not shown) is provided on the water surface on the other end side opposite to the end where the sludge pit 6 is located.

Next, the operation of the present invention will be explained. In order to collect sludge, as shown in FIGS. 1 to 4, the movable arm 6 is suspended and the sediment collecting plate is moved.

The traveling cart 5 is moved in the direction shown by the solid arrow with the lower end of the sedimentation tank 7 in sliding contact with the bottom surface 2 of the sedimentation tank 1.

As a result, the sediment is scraped up by the scraping plate 7, scraped into the sludge pit 3, and discharged to the outside of the settling tank 1.

Then, as the traveling cart 5 moves further, the guide roller 8 rides on the upward rail 15 and gradually rises, as shown in FIG.
As shown in FIG. 6, the movable arm 6 is exposed in its entirety above the water surface, and then each locking device 11.1
1 rollers 12, 12 are pressed inwardly against the upper self-propelled guide 16.16, so that the hook element 13.13 can be inserted into the lower part of the movable arm 6.6. .

Then, the truck 5 stops moving by the action of a limit switch or the like, and then starts a return movement in the opposite direction. If truck 5 moves back.

The guide roller 8 of the movable arm 6 returns on the upward rail 15, but due to the locking of the hook member 16, the movable arm 6 is moved while maintaining its exposed position above the water surface.

When the reciprocating truck 5 approaches the other end of the sedimentation basin 1, the guide roller 8 of the movable arm 6 rides on the downward rail 17 and is slightly lifted, as shown in FIGS. 7 and 8. , followed by each locking device i11,11(7)0-ra12
, 12 comes into contact with the upper sex guide 18.18 and the outer button is pushed, whereby the 7-lock member 13.13 moves outward and releases its lock with the movable arm 6.6. I will do it. Then, the truck 5 stops its backward movement by the action of a limit switch or the like, and starts its forward movement. If trolley 5 moves forward.

The movable arm 6 gradually descends with its guide row 28 acting on the downward rail 17, and eventually reaches the bottom surface 2 of the sedimentation basin 1, and assumes the suspended/raking position in the water as shown in Figs. 1 to 4. It returns to .

By repeating such reciprocating motions of the cart 5, the collection of sediment or scum is progressed.

As explained above, the sludge scraping device of the present invention is provided with a movable arm provided with a scraping plate and a guide roller on a traveling trolley that reciprocates along the longitudinal direction of the sedimentation tank, and which is movable with a scraping plate and a guide roller. A locking device is provided that is movable in a direction perpendicular to the above direction, and an upward rail that receives and pulls up the guide roller of the movable arm is installed in the side wall of one end of the sedimentation tank where the sludge pit is located, and an upward rail that pulls up the movable arm. An upper self-propelled guide is provided to move the locking device inward in order to lock it in the state, and at the other end of the sedimentation basin, a locking device is moved outward in order to release the locking of the movable arm. An upward guide and a downward rail that receives the guide roller of the movable arm and guides the movable arm to the scraping position is provided.

(1) Equipment costs are reduced because there is no need for a winding device or a drive device for the winding lobe for switching and tilting the movable arm between the scraping state and the non-scraping state.

(2) The movable arm can be used simply by moving the trolley.

Since it is automatically and mechanically tilted by each rail and guide, there is no need to use multiple limit switches to control the tilting of the movable arm in conjunction with the travel of the traveling bogie, as in the past, and the control system is extremely simple. It becomes easy.

(6) Since there are many mechanically operated parts and the structure is simple,
There are few breakdowns and maintenance and inspection are easy.

It is possible to provide an excellent sludge scraping device that has many advantages such as, is easy to handle, and can be used stably for a long period of time.

[Brief explanation of the drawing]

Figure 5 is a side cross-sectional view of the main part showing the condition when collecting sediment, Figure 4 is a front cross-sectional view of the same, and Figure 5 is a side cross-sectional view of the main part showing the state where the traveling truck has reached one end of the sedimentation basin. , FIG. 6 is a partially cutaway plan view of the same, FIG. 7 is a sectional side view of the main part showing the state in which the traveling truck has reached the other end of the sedimentation tank, and FIG. 8 is a partially cutaway plan view of the same. 1... Sedimentation basin, 2... Bottom, 3... Sludge bit,
4... Rail, 5... Traveling trolley, 6... Movable frame, 7... Sediment scraping board, 8... Guide roller, 9...
...Rail, 10...Wheel, 11...Lock device%
12...P-RA% 16...Hook member, 14.
...Drilling hole, 15...Upper rail, 16...Upper moving guide, 17...Downward rail, 18...Upper moving guide, 19...Scum scraping board Figure 1, Figure 3 Figure 4 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] (1) A movable arm equipped with a sediment scraping plate and a rice cake inner roller is pivotally supported on the side of the trolley, which reciprocates in the longitudinal direction of the sedimentation tank, and is swingable in the running direction. A locking device is provided which locks and releases the movable arm at the raised position by moving in a direction transverse to the direction of the movable arm. An upward rail for pulling up the movable arm and an upper internal guide for moving the locking device inward after raising the movable arm are provided, and the other end is provided with an upper rail for moving the locking device outward and locking it with the movable arm. The sludge scraping device (2) features a scum scraping plate that swings in conjunction with the traveling trolley K and the movable arm. A sludge scraping device according to claim 1.