JP2006026527A - Solid-liquid separator and damper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solid-liquid separator having a simple structure and highly quantitative treatment capability in the solid-liquid separator and a damper. <P>SOLUTION: The solid-liquid separator include a sedimentation pond (1), an inclined plate device (3), a collecting member (4) moving in a direction parallel to the flow of raw water, a movable baffle (5) which prevents water flow through space (2) at the time of a drooping condition by closing the space (2) downward the inclined plate device (3) and makes the space through which the collecting member (4) passes by lifting the bottom part (5b) when pressed by the collecting member (4), and the damper (10) for extending return time until the bottom part (5b) of the movable baffle (5) returns from a rising condition to a drooping condition by gravitation. One collecting device is sufficient to a plurality of inclined plate devices (3). The raw water is treated in series by a plurality of inclined plate devices (3). Rolling up of a solid matter precipitated when the bottom part (5b) of the movable baffle (5) returns from the rising condition to the drooping condition can be suppressed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a solid-liquid separation device and a damper, and more particularly to a solid-liquid separation device having a simple configuration and high qualitative processing capability, and a damper for use in the solid-liquid separation device.

  Conventionally, there is a gap between the sedimentation basin where raw water containing sludge particles flows in from one end and the treated water from which the sludge particles are precipitated flows out from the other end, and the bottom of the sedimentation basin. An inclined plate device that promotes sedimentation of sludge particles contained in the raw water flowing from one end to the other end, and scraping that moves along the bottom of the sedimentation basin in a direction perpendicular to the flow of water and scrapes the settled sludge There is known a solid-liquid separation device including a device and a non-movable baffle plate that closes a gap below the inclined plate device and prevents water from flowing through the gap (see, for example, Patent Document 1). ).

JP-A-60-166011 (FIG. 1)

In the solid-liquid separation device equipped with the non-movable baffle, the scraping member moves in a direction perpendicular to the flow of water and scrapes the sludge. Then, scraping devices are required as many as the number of inclined plate devices. That is, there is a problem that the configuration becomes complicated.
Accordingly, an object of the present invention is to provide a solid-liquid separation device having a simple configuration and high qualitative processing capacity, and a damper for use in the solid-liquid separation device.

In the first aspect, the present invention relates to a sedimentation basin (1) into which raw water containing solids flows from one end side and treated water from which solids are precipitated flows out from the other end side, and the sedimentation basin (1). Inclined plate that promotes the sedimentation of solids contained in the raw water that is installed at one or more places with a gap (2) between the bottom of the pond (1a) and flows from one end side to the other end side of the settling pond (1) An apparatus (3), a scraping member (4) that moves in a direction parallel to the flow of the raw water along the bottom of the settling basin (1), and scrapes the settled solid matter, and at least one of the slopes When it is installed corresponding to the plate device (3) and rotatably supported by the upper portion (5a) and is suspended by gravity, the gap (2) below the corresponding inclined plate device (3) is closed. Thus, the scraping member (4) that moves and prevents the raw water or treated water from flowing through the gap (2). When pushed, the lower part (5b) rises and a movable baffle plate (5) that opens a gap through which the scraping member (4) passes, and the movable scraping member (4) is pushed to move the movable type. A damper (10) for extending the return time from the state where the lower part (5b) of the baffle plate (5) is raised to the time when the scraping member (4) comes off and returns to the suspended state by gravity; A solid-liquid separator (100) is provided.
In the solid-liquid separation device (100) according to the first aspect, since the scraping member (4) moves in a direction parallel to the flow of raw water and scrapes solids, a plurality of inclined plates are provided in the flow direction of the raw water. Only one scraping device is required for the device (3). That is, the configuration is simplified. In addition, since the raw water is prevented from flowing below the inclined plate device (3) by the baffle plate (5) and the raw water is processed in series by the plurality of inclined plate devices (3), the qualitative treatment capacity is improved. Get higher.
From the state in which the lower part (5b) of the movable baffle plate (5) is raised by being pushed by the moving scraping member (4), the scraping member (4) comes off and returns to the suspended state by gravity. Since the return time is extended by the damper (10), it is possible to suppress the precipitated solid matter from being fanned and rolled up by the movable baffle plate (5).

In a second aspect, the present invention provides the solid-liquid separator (100) having the above-described configuration, wherein the damper (10) obtains a damper action by utilizing the resistance of water. A liquid separation apparatus (100) is provided.
There are hydraulic dampers, but in solid-liquid separators in water purification facilities, it is necessary to avoid the danger of oil leaking from the dampers and mixing with water.
Therefore, in the solid-liquid separator (100) according to the second aspect, a damper (10) that obtains a damper action using the resistance of water is used. This eliminates the risk of oil leaking from the damper and mixing with water.

In a third aspect, the present invention provides the solid-liquid separator (100) configured as described above, wherein the damper (10) is pushed by the moving scraping member (4) and the movable baffle (5 ), The scraping member (4) moving from the suspended state rather than the damper action at the time of return until the scraping member (4) comes off and returns to the suspended state by gravity. The solid-liquid separator (100) is characterized in that the damper action during push-up is smaller until the lower part (5b) of the movable baffle plate (5) is raised by being pushed by the provide.
In the solid-liquid separation device (100) according to the third aspect, when the lower part (5b) of the movable baffle plate (5) is raised by being pushed by the moving scraping member (4), it has a relatively small resistance. When the scraping member (4) comes off and returns to the suspended state by gravity without being burdened by rising, it slowly returns with a relatively large resistance.

In a fourth aspect, the present invention relates to a cylindrical cylinder (11), the inside of the cylinder (11) is liquid-tightly divided into a first chamber (11a) and a second chamber (11b), and the cylinder ( 11) a piston (12) moving in the interior; a shaft (13) protruding outward from the piston (12) through the first chamber (11a); and the cylinder (11) drilled into the first chamber ( 11a) and a first hole (14) for allowing liquid to enter and exit between the outside and the cylinder (11) for allowing liquid to enter and exit between the second chamber (11b) and the outside. Provided is a damper (10) comprising a second hole (15).
In the damper (10) according to the fourth aspect, the liquid enters and exits between the outside and the first chamber (11a) and the second chamber (11b) when operated in a liquid (water, oil, etc.). The damper action can be obtained by utilizing the resistance force of. Further, since the damper liquid different from the external liquid is not used, there is no risk that the external liquid and the different damper liquid leak from the damper (10) and are mixed outside. For example, when operated in water, there is no danger of leakage of damper oil from the damper (10) and mixing with external water, so it can be suitably used in the solid-liquid separator (100) of the water purification facility. Further, for example, when operated in edible oil, there is no danger that the damper oil leaks from the damper (10) and mixes with the external edible oil, so that it can be suitably used in a edible oil processing apparatus.

In a fifth aspect, the present invention provides the damper (10) configured as described above, wherein the first hole (14) and the second hole (15) are opened on the inner side of the outer opening diameter (φo1, φo2). Provided is a damper (10) characterized in that it has a large diameter (φi1, φi2) and has a mortar-shaped surface (14i, 15i) between an outer side opening and an inner side opening.
In the damper (10) according to the fifth aspect, the solid matter mixed in the liquid is formed in the first chamber (11a) and the second chamber (11b) due to the shapes of the first hole (14) and the second hole (15). It is difficult to enter and easily exit from the first chamber (11a) and the second chamber (11b). Therefore, it can suppress that the solid substance mixed with the liquid accumulates in the 1st chamber (11a) and the 2nd chamber (11b).

In a sixth aspect, the present invention provides the damper (10) having the above-described configuration, wherein the minimum hole diameter (φo1) of the first hole (14) and the minimum hole diameter (φo2) of the second hole (15). A damper (10) characterized in that is different from the above.
In the damper (10) according to the sixth aspect, the liquid enters the first chamber (11a) and the second chamber (11b) due to the difference in the hole diameter and the hole shape of the first hole (14) and the second hole (15). There is a difference between the resistance force when exiting from) and the resistance force when liquid enters the second chamber (11b) and exits the first chamber (11a). Therefore, for example, when used as the damper in the first aspect, when the lower part (5b) of the movable baffle plate (5) is pushed up by the moving scraping member (4), the resistance force is relatively small. When the scraping member (4) comes off and returns to the suspended state by gravity, it can be returned slowly with a relatively large resistance without raising the burden on the scraping member (4).

According to the solid-liquid separation device (100) of the present invention, the scraping member (4) moves in a direction parallel to the flow of raw water and scrapes the solid matter, thereby simplifying the configuration. Moreover, since raw | natural water is processed in series by a some inclined plate apparatus, qualitative processing capability becomes high. From the state in which the lower part (5b) of the movable baffle plate (5) is raised by being pushed by the moving scraping member (4), the scraping member (4) comes off and returns to the suspended state by gravity. Since the return time is extended by the damper (10), it is possible to suppress the precipitated solid matter from being fanned and rolled up by the movable baffle plate (5).
According to the damper (10) of the present invention, since the damper action is obtained by utilizing the resistance force of the liquid in and out between the outside and the first chamber (11a) and the second chamber (11b), the external liquid Do not use a foreign damper fluid. Therefore, there is no danger that a damper liquid different from the external liquid leaks from the damper (10) and is mixed outside, and can be suitably used, for example, in the solid-liquid separator (100) of the water purification facility.

  Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the drawings. Note that the present invention is not limited thereby.

FIG. 1 is a plan view illustrating a solid-liquid separation apparatus 100 according to the first embodiment. In addition, in order to avoid that a figure becomes complicated, some illustration is abbreviate | omitted.
In this solid-liquid separator 100, raw water flows into the sedimentation basin 1 from the raw water channel SW. The raw water precipitates solids while sequentially passing through the inclined plate device 3 installed in multiple stages (five stages or more) in the sedimentation basin 1 and flows out from the outflow trough 1b to the treated water channel TW as treated water.
At the bottom of the sedimentation basin 1 at the end of the raw water channel SW side, there is provided a sludge reservoir 1c for collecting and temporarily storing the precipitated solid matter.

FIG. 2 is a side view showing a main part of the solid-liquid separator 100. FIG. 3 is a front view of the same.
The inclined plate device 3 is installed with a gap 2 between the settling basin 1 and the pond bottom 1a. Solid matter contained in the raw water flowing from the raw water channel SW side of the settling basin 1 to the treated water channel TW side passes through the inside of the inclined plate device 3, so that sedimentation is promoted.

  The solid matter settled on the pond bottom 1a is scraped to the sludge reservoir 1c by the scraping member 4 that moves in the direction parallel to the flow of the raw water along the pond bottom 1a.

The vicinity of both ends of the scraping member 4 is fixed to the endless chains 6 and 6.
Endless chains 6 and 6 mesh with sprockets 7 and 7 '. The sprocket 7 is supported by a driven shaft 7a, and the sprocket 7 'is supported by a drive shaft 7b and is driven to rotate. The drive shaft 7b is rotationally driven via a belt by a motor installed on the water.

  In order to prevent raw water or treated water from passing through the gap 2, a baffle plate 5 is provided in the upper half of the gap 2, and a movable bottom plate 30 is provided in the lower half.

  The upper portion 5a of the baffle plate 5 is supported by a support shaft 8, and the baffle plate 5 is rotatable about the support shaft 8 as a rotation axis. Further, a damper 10 supported by a fixed shaft 9 is attached to the baffle plate 5. 2 and 3, when the lower part 5b of the baffle plate 5 is not in contact with the scraping member 4, the baffle plate 5 is suspended by gravity.

  The upper part 5a of the movable bottom plate 30 is pivotally supported by a support shaft 32, and the movable bottom plate 30 is rotatable about the support shaft 32 as a rotation axis. In addition, sliders 31, 31 are attached in the vicinity of both ends of the movable bottom plate 30. As shown in FIGS. 2 and 3, when the sliders 31, 31 do not contact the scraping member 4, the movable bottom plate 30 is supported by the pond bottom 1a.

  That is, in the state shown in FIGS. 2 and 3, the upper half of the gap 2 is closed by the baffle plate 5 and the lower half is closed by the movable bottom plate 30, and the raw water or treated water is prevented from flowing through the gap 2. .

As shown in FIGS. 4 and 5, when the scraping member 4 moves and hits the lower portion 5 b of the baffle plate 5, the lower portion 5 b of the baffle plate 5 is pushed up by the moving force of the scraping member 4. Although there is a resistance of the damper 10, it does not impede the movement of the scraping member 4.
Further, when the scraping member 4 moves and hits the slider 31, the movable bottom plate 30 is lifted by the moving force of the scraping member 4. Therefore, even if the baffle plate 5 and the movable bottom plate 30 are present, the scraping member 4 can move without hindrance.

As shown in FIG. 6, when the scraping member 4 further moves and comes off the lower part 5 b of the baffle plate 5, the lower part 5 b of the baffle plate 5 tends to return to the suspended state due to gravity. However, because of the resistance of the damper 10, it does not suddenly return to the drooping state. Accordingly, it is possible to suppress the precipitated solid matter from being fanned and rolled up by the baffle plate 5.
Further, when the scraping member 4 further moves and is applied to the slope portion 31a of the slider 31, the movable bottom plate 30 is gradually lowered according to the taper of the slope portion 31a. Therefore, the precipitated solid matter is not fanned up and rolled up on the movable bottom plate 30.

As shown in FIGS. 7 and 8, after the scraping member 4 is detached from the lower portion 5 b of the baffle plate 5, the baffle plate 5 slowly returns to the suspended state due to the resistance force of the damper 10. Accordingly, it is possible to suppress the precipitated solid matter from being fanned and rolled up by the baffle plate 5.
When the scraping member 4 is detached from the slope portion 31a of the slider 31, the movable bottom plate 30 is almost lowered to the pond bottom 1a. Therefore, the precipitated solid matter is not fanned up and rolled up on the movable bottom plate 30.

FIG. 9 is a cross-sectional view showing the structure of the damper 10.
The damper 10 includes a bottomed cylindrical cylinder 11, a piston 12 that liquid-tightly divides the inside of the cylinder 11 into a first chamber 11 a and a second chamber 11 b, and moves within the cylinder 11. A stainless steel shaft 13 projecting to the outside through the chamber 11a, a shaft receiver 18 for gripping the shaft 13, and a super high molecular polyethylene made of threaded through the peripheral wall of the cylinder 11 on the first chamber 11a side end. A nozzle 16 and a nozzle 17 made of ultrahigh molecular weight polyethylene that is screwed through the peripheral wall at the end of the cylinder 11 on the second chamber 11b side are provided.

The cylinder 11 has a length of 500 mm, an outer diameter of 90 mm, a peripheral wall thickness of 6 mm, a bottom thickness of 10 mm, and is made of stainless steel, for example.
The piston 12 has a length of 650 mm and a diameter of 20 mm, for example, and is made of ultra high molecular polyethylene.
The shaft receiver 18 has, for example, a thickness of 25 mm and is made of ultra high molecular polyethylene.
The reason why the piston 12 and the shaft receiver 18 are made of ultra high molecular weight polyethylene is that they have good slidability, do not swell with water, and are harmless even if wear powder comes into water.

As shown in FIG. 10, the first hole 14 is formed in the nozzle 16.
The nozzle 16 has a length of 8 mm and an outer diameter of 14 mm, for example, and is made of ultra high molecular polyethylene.
The outer hole diameter φo1 of the first hole 14 is 5 mm, the inner hole diameter φi1 is 9 mm, the inner hole surface 14i from the inner opening to 6 mm is a tapered surface, and the outer hole surface 14o from the outer opening to 2 mm is a straight surface. It has become.

As shown in FIG. 11, the second hole 15 is formed in the nozzle 17.
The nozzle 17 has a length of 8 mm and an outer diameter of 14 mm, for example, and is made of ultra high molecular polyethylene.
The outer hole diameter φo2 of the second hole 15 is 3.5 mm, the inner hole diameter φi2 is 7.5 mm, the inner hole surface 15i from the inner side opening to 6 mm is a tapered surface, and the outer hole surface 15o from the outer side opening is 2 mm. Has a straight surface.

FIG. 12 is a cross-sectional view showing the movement of the shaft 13 (upward direction Du) when the scraping member 4 pushes up the lower part 5b of the baffle plate 5. FIG.
Water enters the first chamber 11 a from the outside through the first hole 14, and water flows out from the second chamber 11 b through the second hole 15.

FIG. 13 is a cross-sectional view showing the movement of the shaft 13 (the return direction Dd) when the lower portion 5b of the baffle plate 5 returns to the suspended state due to gravity.
Water enters the second chamber 11 b from the outside through the second hole 15, and water goes out from the first chamber 11 a through the first hole 14.

  Since the water resistance in the return direction Dd is greater than the water resistance in the push-up direction Du, the damper action is particularly effective for movement in the return direction Dd.

According to the solid-liquid separator 100 of the first embodiment, the following effects can be obtained.
(1) Since the scraping member 4 moves in a direction parallel to the flow of raw water and scrapes the solid matter, only one scraping device is required for the plurality of inclined plate devices 3 provided in the flow direction of the raw water. Therefore, the configuration is simplified.
(2) Since the raw water is prevented from flowing below the inclined plate device 3 by the baffle plate 5 and the raw water is processed in series by the plurality of inclined plate devices 3, the qualitative treatment capacity is increased.
(3) The damper 10 extends the return time from the state in which the lower member 5b of the baffle plate 5 is pushed up by the scraping member 4 and the scraping member 4 comes off and returns to the suspended state by gravity. It is possible to suppress the precipitated solid matter from being fanned by the baffle plate 5 and rolled up.

According to the damper 10 of the first embodiment, the following effects can be obtained.
(1) Since the damper action is obtained by utilizing the resistance of water entering and exiting the first chamber 11a and the second chamber 11b, there is no risk of oil leaking from the damper 10 and mixing with water, and solid-liquid separation in a water purification facility The apparatus 100 can be suitably used.
(2) Since the inner hole surfaces 14 i and 15 i of the first hole 14 and the second hole 15 are tapered surfaces, it is easy for solids to come out even if they enter the cylinder 11.
(3) The inner hole surfaces 14i and 15i of the first hole 14 and the second hole 15 are tapered, and the hole diameter difference between the hole diameters φi1 and φo1 of the first hole 14 and the hole diameters φi2 and φo2 of the second hole 15. Thus, it is possible to make a difference between the damper action when the shaft 13 enters the cylinder 11 and the damper action when the shaft 13 leaves the cylinder 11.
(4) By changing the hole diameters φi1 and φo1 of the first hole 14 and the hole diameters φi2 and φo2 of the second hole 15 (replacing the nozzles 16 and 17), the magnitude of the damper action can be freely set.

  The solid-liquid separator and the damper of the present invention are used for water and sewage treatment.

1 is a plan view showing a solid-liquid separation device according to Example 1. FIG. It is a side view (baffle plate hanging state) which shows the principal part of the solid-liquid separator which concerns on Example 1. FIG. It is a front view (baffle plate hanging state) which shows the principal part of the solid-liquid separator concerning Example 1. FIG. It is a side view (blocking plate pushing up state) which shows the principal part of the solid-liquid separator concerning Example 1. BRIEF DESCRIPTION OF THE DRAWINGS FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. It is a side view (state during baffle return) showing the principal part of the solid-liquid separation device concerning Example 1. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view illustrating a damper according to Example 1. FIG. 3 is a cross-sectional view illustrating a nozzle of a damper according to Embodiment 1. FIG. 6 is a cross-sectional view showing another nozzle of the damper according to Embodiment 1. FIG. It is sectional drawing which shows the motion at the time of the baffle plate push-up of the damper which concerns on Example 1. FIG. It is sectional drawing which shows a motion at the time of the baffle plate return of the damper concerning Example 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sedimentation basin 1c Sludge reservoir 2 Gap 3 Inclined plate device 4 Scraping member 5 Baffle plate 10 Damper 11 Cylinder 11a 1st chamber 11b 2nd chamber 12 Piston 13 Shaft 14 1st hole 15 2nd hole 100 Solid-liquid separator

Claims (6)

  A gap is formed between the sedimentation basin (1) from which raw water containing solids flows from one end and the treated water from which the solids are precipitated flows from the other end, and the pond bottom (1a) of the sedimentation basin (1). (2) An inclined plate device (3) that promotes the sedimentation of solids contained in raw water flowing from one end side to the other end side of the sedimentation basin (1) that is installed at one or more places by opening the sedimentation basin (1), 1) Installed corresponding to the scraping member (4) that moves along the bottom of the pond in a direction parallel to the flow of the raw water and scrapes the settled solid matter, and at least one inclined plate device (3). When it is supported by the upper part (5a) in a rotatable manner and is suspended by gravity, the lower gap (2) of the corresponding inclined plate device (3) is closed, and raw water or treatment is performed through the gap (2). Lower part (5b) when pushed by the moving scraping member (4) while preventing water from flowing A movable baffle plate (5) that goes up and leaves a gap through which the scraping member (4) passes, and a lower part of the movable baffle plate (5) that is pushed by the moving scraping member (4) ( A solid-liquid separation device (5) having a damper (10) for extending a return time from the raised state until the scraping member (4) is detached and returned to a suspended state by gravity. 100).   2. The solid-liquid separator (100) according to claim 1, wherein the damper (10) obtains a damper action by utilizing resistance of water.   3. The solid-liquid separator (100) according to claim 1, wherein the damper (10) is pushed by the moving scraping member (4) to be a lower part of the movable baffle plate (5). (5b) is pushed by the moving scraping member (4) from the suspended state rather than the damper action at the time of return until the scraping member (4) comes off and returns to the suspended state by gravity. The solid-liquid separation device (100) is characterized in that the damper action during push-up until the lower part (5b) of the movable baffle plate (5) is raised is smaller.   A cylindrical cylinder (11) and a piston (12) for dividing the inside of the cylinder (11) into a first chamber (11a) and a second chamber (11b) in a liquid-tight manner and moving within the cylinder (11) A shaft (13) projecting from the piston (12) to the outside through the first chamber (11a), and a liquid drilled between the first chamber (11a) and the outside that is formed in the cylinder (11). A first hole (14) for getting in and out, and a second hole (15) drilled in the cylinder (11) for letting liquid in and out between the second chamber (11b) and the outside. A damper (10) characterized by that.   5. The damper (10) according to claim 4, wherein the first hole (14) and the second hole (15) have an inner side opening diameter (φi1, φi2) rather than an outer side opening diameter (φo1, φo2). A damper (10) characterized by being large and having a mortar-shaped surface (14i, 15i) between the outer opening and the inner opening.   The damper (10) according to claim 5, wherein a hole diameter (φo1) of a minimum portion of the first hole (14) and a hole diameter (φo2) of a minimum portion of the second hole (15) are different. Damper (10) to do.

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