JP2018149502A - Dust removal system and cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further remove an admixture adhered to a screen part in a dust removal device comprising the screen part.SOLUTION: A dust removal system comprising: a dust removal device having a screen part for capturing an admixture in water, and an admixture discharge part for removing the admixture captured by the screen part from water; and a cleaning device for cleaning the admixture adhered to the screen part. The cleaning device is provided on a downstream side of the screen part, and gives a force to the admixture adhered to the screen part in a direction opposite to a flow direction of water stream. According to this dust removal system, the cleaning device, which is located on the downstream side of the screen part of the dust removal device, acts on the admixture adhered to the screen part in the direction opposite to the flow of water stream, whereby the admixture can be effectively removed.SELECTED DRAWING: Figure 2

Description

  The present invention cleans dust adhering to a screen unit that captures contaminants in water, a dust removing device that includes a contaminant discharge unit that removes contaminants captured by the screen unit from the water, and contaminants attached to the screen unit. The present invention relates to a dust removal system including a cleaning device.

  To-be-treated water discharged from homes and factories is circulated through a sewage pipe, sent to a terminal sewage treatment plant via a pumping station, and predetermined water treatment is performed at the terminal sewage treatment plant. In the terminal sewage treatment plant, facilities for removing contaminants such as residue from the treated water are required. As a facility for removing contaminants such as residue, for example, a dust removal facility that includes a contaminant discharge unit that discharges contaminants from the water to be treated and uses a screw conveyor or the like as the contaminant discharge unit is known.

  For example, Patent Document 1 discloses an introduction unit (feeding funnel) that takes in contaminants as a contaminant discharge unit that discharges contaminants from treated water in a facility that removes contaminants such as residue in treated water. A dust removal facility including a screw conveyor device in a cylindrical casing provided with a screen portion (breaking portion) is described. The dust discharge unit in the dust removal equipment is provided with a brush on the outer periphery of the screw of the screw conveyor device, and the brush is moved along the inner wall of the casing as the screw is driven to clean the screen portion.

Japanese Patent No. 412496

  In dust removal equipment equipped with a brush on the outer periphery of the screw of the foreign matter discharge part, it is possible to apply force to the foreign matter adhering to the screen part only from the upstream side of the water flow in the same direction as the water flow. There was a problem that it was not possible to clean the foreign materials.

  Therefore, an object of the present invention is to further remove foreign substances attached to the screen portion in the dust removing apparatus having the screen portion.

As a result of intensive studies on the above problems, the present inventor has a cleaning device that applies a force in the direction opposite to the flow direction of the water flow to the foreign matter attached to the screen portion on the downstream side of the screen portion of the dust removing device. The present invention was completed by finding that the cleaning efficiency of the screen portion was improved.
Specifically, the present invention is the following dust removal system and cleaning device.

  The dust removal system of the present invention for solving the above-mentioned problems is a dust removing device having a screen part for catching contaminants in water, and a dust discharge part for removing the contaminants captured by the screen part from the water, In addition, the dust removal system includes a cleaning device that cleans the foreign matter attached to the screen portion, and the cleaning device is provided on the downstream side of the screen portion, and the dust attached to the screen portion On the other hand, a force in the direction opposite to the flow direction of the water flow is applied.

  According to the dust removal system of the present invention, the cleaning device installed on the downstream side of the screen portion of the dust removal device acts in a direction opposite to the flow of the water flow on the foreign matter attached to the screen portion. Can be removed automatically.

Furthermore, as one embodiment of the dust removal system of the present invention, the cleaning device applies a force in the direction opposite to the flow direction of the water flow to the foreign matter attached to the screen portion using a fluid.
According to this feature, it is possible to remove foreign substances adhering to the screen portion with a simple configuration without directly contacting the screen portion, so there is little mechanical deterioration such as wear, and maintenance of the screen portion and the cleaning device is easy. It becomes.

Furthermore, as one embodiment of the dust removal system of the present invention, the fluid is an ejected fluid.
According to this feature, since the force to peel off the foreign substance from the screen portion is strong, there is an effect that the cleaning property is excellent.

Furthermore, as one embodiment of the dust removal system of the present invention, the cleaning device applies a force in the direction opposite to the flow direction of the water flow to the foreign matter attached to the screen portion using waves generated in the water. Features.
According to this feature, since foreign matters adhering to the screen portion can be removed without directly contacting the screen portion, mechanical deterioration such as wear is reduced, and maintenance of the screen portion and the cleaning device is facilitated.

Furthermore, as one embodiment of the dust removal system of the present invention, the cleaning device abuts against the screen portion, thereby applying a force in the direction opposite to the flow direction of the water flow to the foreign matter attached to the screen portion. And
According to this feature, it is possible to more reliably remove foreign substances attached to the screen portion.

Furthermore, as one embodiment of the dust removal system of the present invention, the cleaning device is movable with respect to the screen portion.
According to this feature, the structure of the cleaning device itself can be made compact, and the cleaning device can be moved to a place where the contaminant is attached in accordance with the state of attachment of the contaminant. In addition, since the cleaning device itself can be moved, the blind spot in the processing range with respect to the screen portion is reduced as compared with the fixed type, so that it is possible to improve the cleaning efficiency of impurities.

  The cleaning device of the present invention for solving the above-described problems is a dust removing device including a screen unit that captures contaminants in water, and a contaminant discharge unit that removes the contaminants captured by the screen unit from the water. A cleaning device for cleaning the water is provided on the downstream side of the screen portion, and applies a force in the direction opposite to the flow direction of the water flow to the foreign matter attached to the screen portion.

  According to this cleaning device, since it can be attached to a conventional dust removing device, it is possible to improve the cleanability of the screen portion of the existing dust removing device.

According to the dust removal system of the present invention, the cleaning device installed on the downstream side of the screen portion of the dust removal device acts in a direction opposite to the flow of the water flow on the foreign matter attached to the screen portion. Can be removed automatically.
Further, according to the cleaning device of the present invention, since it can be attached to a conventional dust removing device, it is possible to improve the cleanability of the screen portion of the existing dust removing device.

It is a schematic explanatory drawing which shows the whole dust removal system of the 1st Embodiment of this invention (plan view). It is a schematic explanatory drawing which shows the whole dust removal system of the 1st Embodiment of this invention (side view). It is a schematic explanatory drawing which shows the dust removal system of the 1st Embodiment of this invention. It is a schematic explanatory drawing which shows the dust removal system of the 2nd Embodiment of this invention. It is a schematic explanatory drawing which shows the dust removal system of the 3rd Embodiment of this invention.

  The dust removal system of the present invention has a screen unit that captures contaminants in water, a dust removal device that includes a contaminant discharge unit that removes the contaminants captured by the screen unit from the water, and is attached to the screen unit. A dust removal system including a cleaning device that cleans the contaminants, wherein the cleaning device is provided on the downstream side of the screen unit, and a flow direction of water flows with respect to the contaminants attached to the screen unit. It is characterized by applying a force in the reverse direction.

Hereinafter, embodiments of a dust removal system and a cleaning device according to the present invention will be described in detail with reference to the drawings.
[First Embodiment]
[Dust removal system]
The dust removal system 1 of 1st Embodiment is installed in the water channel R, and is used as an installation for discharging the foreign substance G in the to-be-processed water which flows through the water channel R from water. For example, it is installed as a water treatment facility such as a sand settling basin in a terminal sewage treatment plant that contains dirt, etc. contained in sewage such as sewage as the contaminant G.

  As shown in FIG. 1, the dust removal system 1 of the first embodiment includes a dust removal device 2 for removing underwater contaminants G from the water, and a cleaning device for cleaning the screen portion 21 of the dust removal device 2. In addition to 3A, on the upstream side of the dust removal device 2, the foreign matter collection device 4 for collecting the foreign matter G contained in the water to be treated W and the foreign matter collected by the foreign matter collection device 4 A crushing device 5 for crushing is provided.

(Contaminant collection device)
The foreign matter collecting device 4 is configured to collect coarse foreign matter G in the water to be treated W and to transfer the collected foreign matter G to the subsequent crushing device 5. As a specific configuration of the foreign matter collecting device 4, the foreign matter G is collected, and the foreign matter collecting member 41 that separates from the water to be treated W, and the rake 42 rotates around the rake shaft 43. A device with a rake.

The foreign matter collecting member 41 is a bar screen in which flat plates on a substantially circular arc in plan view are stacked in the depth direction of the water channel R. The foreign matter collecting member 41 captures the foreign matter G flowing along with the flow of the water to be treated W. To separate. In the rotating rake, three rakes 42 are fixed around the rake shaft 43, and the rake shaft 43 is installed eccentrically with the center of the arc-shaped bar screen. The rake 42 is configured to protrude from the gap between the bar screens by rotating the rake shaft 43. Note that the rotating rake rotates clockwise in plan view.
With such a configuration, the foreign matter G captured by the foreign matter collection device 4 is scraped off by the rake 42 and transferred to the crushing device 5.

(Crushing device)
The crushing device 5 is a device provided with two rotary crushing blades (cutter blades) 51 each having a crushing blade fixed around a rotating shaft. As shown in FIG. 1, the two rotary crushing blades 51 are juxtaposed substantially vertically, and the rotary crushing blade installed on the foreign matter collecting device 4 side rotates clockwise in plan view, and the water channel R The rotary crushing blade installed on the side wall side of the glass rotates counterclockwise in plan view. Thereby, the rotation crushing blades 51 rotate so as to mesh with each other, and the foreign matter G can be crushed. The crushed foreign matter G flows into the dust removing device 2 installed on the downstream side.

(Dust remover)
As shown in FIG. 2, the dust removing device 2 includes a cylindrical casing 23 erected substantially vertically, and a contaminant discharge unit 22 including a screw installed inside the casing 23. A casing opening 24 through which the water to be treated W flows is formed in the lower part of the casing 23 in the flow direction upstream of the water to be treated W, and impurities G from the treated water W that has flowed in are formed on the downstream side. A screen unit 21 for capturing is provided. The foreign matter G captured by the screen unit 21 is discharged from the water to the outside by the foreign matter discharge unit 22.

  The contaminant discharge unit 22 in the first embodiment is configured by a screw that is erected substantially vertically, but may be configured so that the contaminant G captured by the screen unit 21 can be taken out from the water. There is no particular limitation. For example, the conveyor etc. which rotate the scraping member for scraping off the captured foreign substance G from a screen part may be sufficient.

The contaminant discharge unit 22 may be inclined. By disposing the contaminant discharge unit 22 so as to be substantially vertical, the apparatus can be made more compact. Furthermore, when it is transferred vertically upward, it faces the falling direction of the foreign matter, so that the dehydration effect due to its own weight is also exhibited.
Moreover, when using a screw, it is preferable to reduce the pitch upward because the pressing action acts on the foreign matter and the dehydration effect is further enhanced.

  The foreign matter G transferred to the upper portion of the casing 23 by the foreign matter discharge unit 22 is discharged from the discharge port 25 formed in the upper portion of the casing 23 and is collected in a container or the like.

  The screen unit 21 is not particularly limited as long as it captures the contaminant G contained in the water to be treated W that has flowed into the casing 23. For example, a punching screen or a wedge wire screen is used.

(Cleaning device)
The cleaning device 3A is a device for removing the contaminant G from the screen portion 21 by applying a force in the direction opposite to the flow direction of the water flow to the contaminant G attached to the screen portion 26 by the acting force of the fluid. It is arranged on the downstream side of the screen 21 of the dust removing device 2.

  As shown in FIGS. 1 to 3, the cleaning device 3 </ b> A includes a pump 33 for feeding a fluid, and a pipe 31 and a nozzle 32 disposed so as to face the screen portion 21. The nozzle 32 injects the fluid sent through the pump 33 from the downstream side of the screen portion 21 and applies a force in the direction opposite to the flow direction of the water flow to the foreign matter G attached to the screen portion 21. Thereby, the foreign substance G can be effectively removed from the screen part 21.

  The fluid fed through the pump 33 may be either liquid or gas. As a specific fluid, it is preferable to use water or air from the viewpoint of easy procurement. Any water may be used. For example, water other than clean water and industrial water, treated water downstream of the dust removal system of the present invention, treated water of other water treatment facilities, etc. May be used.

As the structure of the pipe 31 and the nozzle 32, one or a plurality of pipes are provided in the depth direction of the water channel, and one or a plurality of nozzles are provided in the pipe.
The arrangement direction of the pipes 31 is not particularly limited, and examples thereof include providing the pipes 31 in a vertical, parallel, or lattice shape with respect to the depth direction.

The specific shape of the nozzle 32 is not particularly limited, and examples thereof include a structure in which a slit or a hole is formed in a pipe, a cylinder attached to the pipe, a conical nozzle, or the like.
In the case where a plurality of nozzles are provided, the working force (pressure) of the fluid discharged from the nozzles may be individually controlled.

The pipe 31 and the nozzle 32 are configured to be movable with respect to the screen unit 21. With this configuration, even when the number of pipes 31 and nozzles 32 is reduced, a sufficient cleaning process can be performed on the screen unit 21. Moreover, since the blind spot in the processing range with respect to the screen part 21 becomes smaller than when the fluid is applied in a state where the cleaning apparatus 4 is fixed, the ability of the cleaning apparatus 3A to remove the foreign substances G from the screen part 21 can be improved. it can.
Moreover, it is good also as a structure which provides the apparatus (camera) for monitoring, etc. in the pipe 31, identifies the location where the contaminant G adhered to the screen part 21, and makes a fluid act only on a specific location.

  Since the cleaning device 3A in the dust removal system 1 according to the present invention is provided separately from the dust removal device 2, only the cleaning device 3A is taken out and maintenance is performed when the cleaning ability of the screen portion 21 is reduced. Can do. Therefore, there is no need to stop the entire dust removal process and replace parts as in the prior art, and the dust removal system can be operated efficiently.

[Other forms of cleaning device in dust removal system]
Below, it illustrates about another form of the cleaning apparatus in a dust removal system.
[Second Embodiment]
FIG. 4 is a schematic explanatory view showing the structure of the dust removal system according to the second embodiment of the present invention.
This dust removal system is an apparatus to which the wave generator 34 is applied as the cleaning apparatus 3B in place of the cleaning apparatus 3A of the first embodiment.

  As shown in FIG. 4, in the cleaning device 3 </ b> B, the waves generated from the wave generator 34 propagate in the water, so that the contaminant G attached to the screen unit 21 is in a direction opposite to the flow direction of the water flow. Apply force. Thereby, the foreign substance G can be effectively removed from the screen part 21.

  The wave generator 34 may have any configuration that can generate a wave propagating in water. Examples thereof include an ultrasonic generator and a plate-like member that is driven back and forth or up and down in water. In particular, an ultrasonic generator that has little influence on the water channel environment during water treatment is more preferable.

  The wave generator 34 is configured to move with respect to the screen unit 26. In particular, when an ultrasonic generator is used, the cleaning device 3 </ b> B can remove the contaminant G from the screen unit 21 by moving to a place where the contaminant G needs to be removed and spotting the ultrasonic wave. Can be improved.

[Third Embodiment]
FIG. 5 is a schematic explanatory view showing the structure of a dust removal system according to a third embodiment of the present invention.
In this dust removal system, the cleaning device 3A of the first embodiment is changed to a cleaning device 3C that physically abuts against the contaminant G attached to the screen portion 21 and applies a force in the direction opposite to the flow direction of the water flow. Is.

  As shown in FIG. 5, the cleaning device 3 </ b> C includes a brush 35 and a drive mechanism 36 for the brush 35. The brush 35 applies a force in the direction opposite to the flow direction of the water flow to the foreign matter G attached to the screen portion 21 from the downstream side of the screen portion 21 via the drive mechanism 36. Thereby, the foreign substance G can be effectively removed from the screen part 21.

The shape and number of brushes are not particularly limited. At least the structure in which the bristles of the brush can act on the contaminant G attached to the screen portion 21 may be used, and examples thereof include a toothbrush-like one and a rotating brush.
Moreover, when providing a plurality of brushes, brushes having different shapes may be combined.
When a brush is used as the cleaning device 3C, it is preferable to select a brush material or the like that suppresses mechanical deterioration of the screen and the brush.

The brush drive mechanism 36 is for moving the brush 35 relative to the screen portion 21. The driving direction is not particularly limited, such as a vertical direction, a horizontal direction, or a direction that rotates the brush itself.
Further, as a configuration of physically contacting the contaminant G, a sponge-like foam or cloth may be used instead of the brush 35.

  In addition, you may combine multiple embodiment mentioned above as a cleaning apparatus. With this configuration, it is possible to select a removal method according to the state of adhesion of the contaminant G.

[Cleaning device]
The cleaning device of the present invention can be effectively cleaned of the screen portion of the dust removing device without changing the device configuration by being installed on the downstream side of the existing dust removing device having the screen portion and the foreign matter discharging portion. Become. Further, since the cleaning device of the present invention is a separate body from the dust removing device, when the cleaning ability of the dust removing device with respect to the screen portion is reduced, only the foreign substance cleaning device can be taken out and maintenance can be performed. Therefore, there is no need to stop the entire dust removal process and replace parts as in the prior art, and the dust removal process can be performed efficiently.

The dust removal system of the present invention can be used for water treatment facilities such as a sand basin in a terminal sewage treatment plant.
Moreover, the cleaning apparatus of this invention can be arrange | positioned and utilized in the downstream of the dust removal apparatus of the existing water treatment equipment.

  DESCRIPTION OF SYMBOLS 1 Dust removal system, 2 Dust removal apparatus, 21 Screen part, 22 Contaminant discharge part, 23 Casing, 24 Casing opening, 25 Outlet, 3A, 3B, 3C Cleaning apparatus, 31 Pipe, 32 Nozzle, 33 Pump, 34 Wave generator , 35 brush, 36 drive mechanism, 4 contaminant collection device, 41 contaminant collection member, 42 rake, 43 rake shaft, 5 crushing device, 51 rotary crushing blade, R water channel, G contamination, W treated water

Claims (7)

A dust removing device having a screen part for catching impurities in the water, a dust discharge part for removing the dusts caught by the screen part from the water, and the dusts attached to the screen part are cleaned. A dust removal system equipped with a cleaning device,
The said cleaning apparatus is provided in the downstream of the said screen part, and gives the force of the reverse direction to the flow direction of a water flow with respect to the said foreign material adhering to the said screen part, The dust removal system characterized by the above-mentioned.   2. The dust removal system according to claim 1, wherein the cleaning device applies a force in a direction opposite to a flow direction of the water flow to the foreign matter attached to the screen unit using a fluid.   The dust removal system according to claim 2, wherein the fluid is a jetted fluid.   2. The dust removal system according to claim 1, wherein the cleaning device applies a force in a direction opposite to a flow direction of the water flow to the foreign matter attached to the screen unit using a wave generated in the water. .   2. The dust removal system according to claim 1, wherein the cleaning device applies a force in a direction opposite to the flow direction of the water flow to the foreign matter attached to the screen portion by contacting the screen portion. .   The dust removal system according to claim 1, wherein the cleaning device is movable with respect to the screen unit. A cleaning device for cleaning a dust removing device provided with a screen unit for capturing impurities in the water and a contaminant discharging unit for removing the contaminants captured by the screen unit from the water, the screen unit A cleaning device, which is provided on the downstream side of the screen and applies a force in a direction opposite to the flow direction of the water flow to the foreign matter attached to the screen portion.

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