JP2595775Y2 - Sludge and scum scraping device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a sludge / scum scraping device.

[0002]

2. Description of the Related Art In a first or final sedimentation basin, sludge is settled on the bottom of the pond, and the sludge is raked in the direction of a pit, which is one direction of the pond, and naturally falls. To be excluded.

[0003]

As one of the methods, there is a circulation driving method using a chain. This method is
The pond includes a plurality of rotating shafts whose axes are oriented in the width direction of the pond, sprockets mounted around the respective rotating shafts, and two right and left chains hung via these sprockets. The device is driven using some or all of the flights attached to the chain at a certain interval to scrape and remove sludge from the pond bottom. According to this method, the maintenance cost is increased, and the economy is inferior.

On the other hand, there is a type in which a pond bottom is reciprocated instead of a circulation type. This includes a longitudinal guide provided at the bottom of the pond, a carrier moving along the guide, driving means (rope, etc.) for reciprocating the carrier, and a sludge scraper attached to the carrier. And the sludge settling at the bottom of the treatment pond is swept in at least one direction by the movement of the sludge scraper to be discharged out of the pond.

[0005] This has the following disadvantages. Since the guide was a two-way system separated in the pond width direction, a large carrier was required to straddle not only the guide and its mounting device, but also between these guides, making the device very large and expensive. .

On the other hand, a large amount of scum accumulates on the water surface.
At present, removal of these scums is performed by a scum scraping device completely independent of a sludge scraping device.
Therefore, as a result, the whole apparatus for treating both sludge and scum was very large and expensive. Moreover, the use of a separate device has disadvantages in many fields, such as increased maintenance costs.

[0007]

Means for Solving the Problems The present invention has been made to solve the above problems, and the invention according to claim 1 comprises a monorail type guide provided long at the bottom of a pond, and a pond moving along the guide. Sludge with a sludge scraper that scrapes the sediment at the bottom in the direction of the pond pit and then returns in the opposite direction, a driving source for this carrier, and a transmission means for transmitting the force from the driving source to the carrier A scraping device, and a trough fixed near the pond water surface, and attached to one side of the trough so as to be able to float and sink, to control the inflow of scum on the water surface in a floating state, and to remove the scum of the water surface with water in the sinking state A weir member having a buoyant force to attract, a push-down member attached to the transmission means to cause the weir member to sink by the movement and allow the weir member to float by the movement in the opposite direction, and a movement of the transmission means Dynamic and comprising a combination of a scum raking device equipped with a Sukamusukurepa capable of converting the scum on the water surface in the orientation of the posture and the non raking posture scrape the direction of the weir member. According to the second aspect of the present invention, the scum scraper can be changed from the scraping posture to the non-scrawling posture in conjunction with the sinking operation of the weir member. The invention according to claim 3 is configured such that the transmission means is configured to circulate from the bottom of the pond to the top of the pond, and that a portion around the top of the transmission means is tensioned during movement in one direction and relaxed during movement in the opposite direction. The scum scraper is configured to be in a raked posture during the tension, and is set to a non-cracked posture by sinking from the water surface during the slack. In the invention according to claim 4, the transmission means is configured to circulate from the bottom of the pond to the top of the pond, and a scum scraper is provided at a portion around the top of the transmission means, and the scum scraper has its own weight. It is configured so that it can be tilted back and forth, and the conversion is performed by hitting the fixed side.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. FIGS. 1 to 4 show the sludge of the present invention.
1 shows an embodiment of a scum scraping device, FIG. 1 is a view of the device from above, FIG. 2 is a longitudinal sectional view taken along line II-II of FIG. 1, and FIGS. I to do
It is sectional drawing of the I-II line. In this embodiment, reference numeral 1 denotes a rectangular sedimentation basin. The sedimentation basin 1 includes a pair of side walls 2 corresponding to the long sides of the rectangle and end walls 3 corresponding to the short sides of the rectangle. And a pond bottom 4 inclined at a small angle to the left. In FIG. 1, adjacent settling ponds 1 are shown at the same time. Here, one of the settling ponds 1 will be described.

The sedimentation basin 1 is provided with a long single-track type integrated guide 5. The guide 5 is formed of an H-shaped channel material, a box-shaped material, or the like.
Are united by a replenishment method and are firmly fixed on the pond bottom 4 with bolts so as to be parallel to the side wall 2. One end of the guide 5 protrudes above the pond pit 6.

Reference numeral 8 denotes a carrier, which is formed in a saddle shape so as to straddle the guide 5, and a pair of front and rear main rollers 7, 7 are mounted inside the carrier so that the carrier 8 rolls on the guide 5. At the same time, a side roller (not shown) is attached to the inside of the carrier 8 so as to be in contact with a side surface of the guide 5 and to be hooked on a flange of the carrier 8 so as to prevent the carrier 8 from slipping upward.

A rotating shaft 10 is passed through the carrier 8, and the rotating shaft 10 extends right and left from the carrier 8, and a sludge scraper 9 is attached to the extended portion. The sludge scraper 9 is provided so as to be able to swing right and left one pair forward and backward, and switches between two postures, a vertical sludge scraping posture and a rearward slanting return posture. This switching is performed by an interlocking lever 11 extending upward from the rotating shaft 10 through a hole in the carrier 8 and a ball joint 12 attached to the interlocking lever 11. Each position of the sludge scraper 9 is defined by the next pulling force and a stopper (not shown).

Numeral 15 denotes a driving drum, which is disposed at a center position in the width direction on the pond and above the pond pit 6 so as to be driven to rotate in the forward / reverse direction by a driving source 16 with a speed reducer with the axial center being horizontal. . Reference numeral 17 denotes a plurality of main drive wheels, each of which has a groove for a wire rope, and a total of four main drive wheels 17 are arranged.

Two of the main drive wheels 17 are arranged just above the front and rear ends of the guide 5, and the other two are arranged just above and below the water surface 18. As a result, the drive drum 15 and the four main drive wheels 17.
They are all located on one elevation facing the length of the pond.
A transmission member 19, which is a single endless wire rope, is wrapped around the main drive drum 15, so that when the main drive drum 15 rotates in one direction, the sludge scraping device A becomes a solid line in FIG. The process proceeds from the instruction return position to the solid line instruction position in FIGS. When the main drive drum 15 rotates in the opposite direction, the main drive drum 15 makes a return movement from the state indicated by the solid line in FIG. 4 to the state indicated by the solid line in FIG.

In order to prevent the transmission member 19 from becoming loose, the main drive wheel 17 is provided with a hydraulic cylinder (accumulator 2) supported by a jack 20 so as to be vertically adjustable.
(With 2). This loosening prevention mechanism
For example, it may be configured for other main drive wheels 17... Or the main drive drum 15.

Numeral 25 designates a total of ten auxiliary drive wheels in five sets. Two sets of the wheels 25 are arranged longitudinally below the water surface near the corner of the pond, and the other two sets are arranged in the middle of the side wall 2 in the longitudinal direction. The remaining pair is disposed close to each other near the main drive wheel 17 immediately below the drive drum 15.

A pair of left and right auxiliary transmission members 26, 26 hung through the auxiliary drive wheels 25 are shown in FIG.
In the return state of FIG. 2, one terminal is fastened by the first feed piece (symbol a) 27 so as to be between the drum 15 and the main drive wheel 17 thereunder, and the other terminal is a pair of upper and lower right main units. It is fastened with reference numeral b so as to be between the drive wheels 17 and 17. Therefore, each terminal portion includes three transmission members 19 in total.

The two auxiliary transmission members 26 are provided with the first feed piece 2
7 through a main driving wheel 17 therebelow, and is divided into left and right through a pair of approaching auxiliary driving wheels 25, 25, each of which is located near the side walls 2, 2.
5 and 25, and also through a pair of auxiliary drive wheels 26 and 26 arranged in the middle of the side wall 2. Then, it is configured to reach b through the auxiliary drive wheel 26 at the right end and the auxiliary drive wheel 26 at the middle of the pond width in FIG. That is, the two auxiliary transmission members 26, 26 are integrated into two at both ends, and are divided into two right and left parts at the other intermediate part, and are driven forward and backward while maintaining this state.

Reference numeral 40 denotes a trough, which is fixed transversely in the middle of the pond in the longitudinal direction. The trough 40 has a square gutter shape, and is fixed so that one side is higher than the water surface and the other side is below the water surface. On the other side of the trough 40, horizontal weir support shafts 41 are rotatably provided by bearings (not shown) at both ends. The weir support shaft 41 has a weir member (float) 42 formed in an elongated shape with an oval cross section.
When the weir member 42 floats on the water surface 18 and sinks below the water surface 18, it is simultaneously rotated and supported.

At both ends of the weir member 42, fan-shaped side seal plates 43 are attached so as to rotate in synchronization with each other. A trough 40 is provided on each outer surface of the side seal plate 43.
Even if the weir member 42 swings back and forth due to the sealing rubber 44 fixed to the side, the leakage of the scum water into the trough from the front is always prevented and the sealing performance is exhibited. The lower side of the dam member 42 is sealed with rubber packing. A communication trough 45 inserted and supported in the side wall 2 is joined to both ends of the trough 40, whereby the trough 40 is suspended and supported.

Reference numeral 47 denotes a pushing-down member.
6 is slidably provided. This pressing member 47
Are rollers 48 provided outside the side seal plate 43.
Is provided. This cam 49
From the state of FIG. 2, the roller 48 comes into contact with the roller 48 as shown in FIG. 3, and thereafter the roller 48 is pushed down as shown in FIG.

When the cam 49 operates in the reverse direction, the dam member 42 floats by itself and returns to the original floating state. A long connecting shaft 50 is mounted between the left and right sides of the pressing member 47. A scum scraper 51 is rotatably provided on the connecting shaft 50. The scum scraper 51 is a strip-shaped plate, and a slit 52 is formed slightly below the upper end thereof so that the scum can pass.

As shown in FIGS. 3 and 4, at both ends of the connecting shaft 50, a pair of left and right protruding pieces 53 which are pushed down by a weir member 42 which is pushed down are provided. Is provided with a return piece 55 that contacts the stopper 54.

Reference numeral 57 denotes a first return piece attached to the auxiliary transmission member 26, which pushes down the push-down member 47. Reference numeral 60 denotes an overflow weir provided on three sides along the side wall 2 and the end wall 3 behind the trough 40. This overflow weir 60
Is provided with a V notch 61,
Is automatically cleaned by the following device.

That is, reference numeral 62 denotes a brush, and a V notch 61
It reciprocates while rubbing on the top. The brush 62 is reciprocated by the second feed piece 63 and the second return piece 64. B indicates a scum scraping device.

The operation of the sludge / scum scraping devices A and B will now be described. The sludge scraper A reciprocates with a stroke of S as shown in FIG. That is, when the drive source 16 is driven and the transmission member 19 is driven, the sludge scraper 9 is vertical as shown by the solid line in FIG. When the carrier 8 is pulled by the transmission member 19, the carrier 8 may be driven before the sludge scraper 9 swings. To prevent this, the main roller 7 such as the upper surface of the guide 5 is used. Protrusions or dents may be provided at places where the vehicle or the side roller rides up or down, thereby generating running resistance of the carrier 8 so that the sludge scraper 9 switches first.

[0026] Then, when the carrier 8 has progressed about _{S 1,} the first feed member 27 is boosted depressing member 47, advancing with the auxiliary transmission member 26 in the direction of the weir member 42. In yet it was advanced about S _2, as shown in FIG. 3, the cam 49 of the depressing member 47 hits the roller 48. As a result, the weir member 42 starts the lowering operation, and sinks below the water surface. At this time, the weir member 42 pushes down the protruding piece 53 as shown in FIG. 4, and the scum scraper 51 rises from the inclined state. As a result, the slit 52 of the scum scraper 51 matches the height of the water surface 18, so that the scum scraper 51 has no scum scraping function. Meanwhile, the depressing member 47 will proceed as _{S 3.}

When the drive source 16 is rotated in the reverse direction, the first return piece 57 operates the push-down member 47 in the opposite direction, whereby the push-down member 47 is returned to its original state without scum scumming. When the return piece 55 hits the stopper 54 at the return end, the scum scraper 51 is inclined as shown in FIG. Note that there is a so-called play time until the first feed piece 27 hits the push-down member 47, and during that time, a resistance means for stopping the push-down member 47 regardless of the transmission member 19 may be provided. This is the same for the brush 62.

Moreover, the auxiliary transmission member 26 from the state in FIG. 2 is driven as S _4, the second feed member 63 is now push the brush 62 travels while rubbing the V-notch 61,
In progress as S ₅ to stop. Second return piece 64 by the reverse rotation of the drive source 16 is return movement the brushes 62 by proceeding as S _5, and stops the pushing back as S _4.

FIG. 5 shows another embodiment. 70 is a guide, 71 is a carrier, and 72 is a sludge scraper.
73 denotes a drive wheel, and 74 denotes a transmission member. Reference numeral 75 denotes a trough. A weir member 76 is provided in front of the trough 75, and a roller 77 is provided in front of the weir member 76 via a lever. The roller 77 is linked with a weir support shaft 78 and a weir member 76.

The transmission member 74 reciprocates, and a push-down lever 79 that pushes down the roller 77 is attached to a portion that goes up and down. A scum scraper 80 is attached to the rear of the lever 79. The upper part of the transmission member 74 is slackened like a virtual line by driving in the X direction,
Tension as shown by the solid line by driving in the direction. Therefore, when driven in the X direction, the scum scraper 80 scrapes the scum on the water surface 81 and pushes it in the direction of the weir member 76. Since the push-down lever 77 pushes down the weir member 76 via the roller 77, the scum flows into the trough 75.
When the drive source 82 is rotated in the reverse direction, the upper circumference of the transmission member 74 is slackened as described above, so that the lever 79 is separated from the roller 77 and the scum scraper 80 is in a sunk state, and the scum is not scraped back. Return.

FIG. 6 shows another embodiment. This embodiment is the same as that of FIG. 5 except for the scum scraping side, so that the same reference numerals are given. Scum scraper 85
Is tilted forward and backward by front and rear stoppers 86. The scum scraper 85 falls backward when it hits the weir member 76, and also falls backward when it hits the opposite projection 87. The scum scraper 85 is made of a slightly heavy member so that the scum scraper 85 does not easily fall backward when scraping scum, and does not fall backward when returning.

FIGS. 7 and 8 show another embodiment. In this embodiment, the trough 75 and the weir member 76
Is set slightly forward, and the arrow Z
Sewage flows in as shown. Weir member 76 and trough 75
In addition to the original one, two are added, and these are arranged on three sides. Then, these dam members 76 are automatically pushed down. That is, a column 90 extends above the carrier 71, and a pair of rollers 91 and a scum scraper 92 are attached to the upper end thereof.

The three weir members 75 are provided with guide plates 93, and rubber droops 94 are provided in front of them so that the scum does not go further toward the overflow weir 95. . When the carrier 71 advances to the left, the carrier 71 rides on the guide plates 93, 93 over the rubber hang 94 while scraping the scum. Thereby, the previous weir members 76, 76 descend and flow into the respective troughs 75. When the scum scraper 92 further advances, the last dam member 76 descends via the guide plate 93, and the scum flows into the trough 75. Although the roller 91 hits the opposing guide plate 93, the roller 91 passes only by slightly raising the weir member 76.

[0034]

According to the present invention, the sludge scraping device has a simple structure with a single track and has a very simple structure combined with a scum scraping device. It is possible to provide an inexpensive device that is advantageous to the above.

[Brief description of the drawings]

FIG. 1 is a perspective sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an explanatory diagram of an operation.

FIG. 4 is an explanatory diagram of an operation.

FIG. 5 is a side sectional view showing another embodiment.

FIG. 6 is a side sectional view showing another embodiment.

FIG. 7 is a side sectional view showing another embodiment.

FIG. 8 is a longitudinal sectional view of FIG. 7;

[Explanation of symbols]

 5 70 Guide 6 Pond pit 871 Carrier 972 Sludge scraper 16 82 Drive source 19 26 74 Transmission member 40 75 Trough 42 76 Weir member 47 79 Depressing means 51 80 85 Scum scraper

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B01D 21/18 B01D 21/24 C02F 1/40

Claims (4)

(57) [Scope of request for utility model registration] 1. A carrier having a monorail type guide long provided on a pond bottom and a sludge scraper moving along the guide to scrape sediment on the pond bottom toward the pond pit and then return in the opposite direction. A sludge scraping device including a driving source for the carrier, and a transmission means for transmitting the force from the driving source to the carrier; and a trough fixed near the pond water surface, and one side of the trough. A dam member having a buoyancy that is mounted to be able to float and sink in the scum of the water surface in the floating state and attracts the scum of the water surface together with the water in the sunk state, and the dam member is attached to the transmission means to make the dam member sink and move. A push-down member that allows the weir member to float by the movement in the opposite direction; and a posture that moves by the movement of the transmission means and scums on the water surface in the direction of the weir member, and a non-scraping posture. Sludge, scum raking device comprising a combination of scum raking device equipped with a convertible Sukamusukurepa. 2. The sludge and scum scraping device according to claim 1, wherein the scum scraper is capable of changing from a scraping posture to a non-scraping posture in conjunction with the sinking operation of the weir member. 3. The transmission means is configured to circulate from the bottom of the pond to the top of the pond, and a portion around the top of the transmission means is tensioned during movement in one direction and relaxed during movement in the opposite direction. 2. The sludge and scum scraping device according to claim 1, wherein the scum scraper is configured to be in a scraping posture when tensed and to sink from the water surface in a non-scraping posture when the slack is loosened. 4. The transmission means is configured to circulate from the bottom of the pond to the top of the pond, and a scum scraper is provided in a portion around the top of the transmission means, and the scum scraper is moved forward and backward by its own weight. The sludge / scum scraping device according to claim 1, wherein the sludge / scum scraping device is configured to be capable of falling down conversion, and the conversion is performed by hitting the fixed side.