JPH06287926A - Filter element moving type dust collector - Google Patents

Abstract

PURPOSE:To easily strip off object hard to be stripped off and operate the dust collector for a long time by providing a stipping off means for removing long-size dust stuck on a screen. CONSTITUTION:A dust collector 2 is provide with an endless belt type screen 7 two-folded through rollers 5, 6 therein. Screen holes are provided so as to be arranged in line arrangement or zigzag arrangement on the flat plate of the screen 7. A washing nozzle 4N for jetting washing water perpendicular to the screen face and a washing nozzle 4M for jetting washing water in the same direction as the basic line of the screen face are provided on the upper position of the belt type screen 7, and a rotary brush 9 for brushing the screen face is also provided. Further, a screen dregs collecting and discharging device 8 to strip off and remove long-size dust stuck to the screen is provided in the screen 7, and hence dust is easily removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter body for surely removing dust, which is attached to or entangled with a belt type screen using punching metal, and other fine dust such as films and strings from the screen during sewage treatment. The present invention relates to a mobile dust remover.

[0002]

2. Description of the Related Art Rainwater that falls in urban areas and domestic wastewater is
After being collected at a sewage treatment plant through an underdrain / sewer, etc., and after removing the dust, etc. contained in the sewage here, this sewage can be treated directly or by pumping it up to the next treatment tank, or if it is rainwater. Then it is released to the river. A bar screen or the like is generally used to remove fine dust in the sewage.

[0003]

However, when a screen-like screen is used for removing fine dust as in the prior art, the effective passage area of the screen is reduced by reducing the mesh width of the screen, which is common in rain and the like. If a large amount of sewage is poured into the wastewater for treatment, the loss will be large, and film and string-like dust is more likely to come off than the screen mesh, and in the case of a mesh screen, dust is easily entangled and reliable removal is difficult. Met. Also, in a screen using a wire mesh, the leaves and the like in the dust can be easily removed, but the elongated string-like substance is inserted into the crossing part of each wire of the mesh screen and entangled or entangled, which is difficult to remove. However, there are drawbacks such that clogging progresses and the water flow capacity of the screen decreases.

It is an object of the present invention to remove dust by reliably removing even film-like or string-like dust that is wrapped around a screen or entangled.

[0005]

The present invention has been made to achieve the above object, and a belt-type screen formed by punching a large number of holes in a flat plate is sunk parallel to the water channel and below the water surface of the water channel. The belt type screen is installed on the belt type screen in a filter type moving dust remover which is designed to rotate and drive the belt type screen to remove dust trapped on the screen or caught on the screen. The lines connecting the center lines of the adjacent holes drilled on the smooth plate are arranged and arranged so that they all have a predetermined angle with respect to the reference line, and in the direction of this reference line, the dust tangled with the screen is removed. The gist is that a means for giving a peeling force is provided to remove dust.

[0006]

[Function] An endless belt-shaped screen made of punching metal that is rotationally driven is provided in the water channel, and the line connecting the center lines of the adjacent holes for punching this belt type screen on a plate material with a smooth surface is relative to the reference line. All are arranged so as to have a predetermined angle, and a means for applying a peeling force in the direction of peeling the dust tangled with the screen in the reference line direction is provided to remove the dust.
Dust that is wrapped around or entangled with the belt-type screen will be naturally released from the wrapping and entanglement, and will be reliably removed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The filter body moving type dust remover of the present invention will be described below with reference to the illustrated embodiments. In the figure, reference numeral 1 designates a water channel, and a filter body moving type dust remover 2 which mainly comprises a belt type screen having an endless punching metal having a required hole diameter and number of holes is installed. The filter body moving type dust remover 2 rotatably supports a roller or wheel 5 driven by a driving device and a plurality of driven rollers or wheels 6 and 6 on a body frame 3 installed on a water channel. The belt-type screen 7 is looped or folded in two as shown in the drawing in an endless manner on the rollers or wheels 5, 6, 6 ... The water channel 1 is arranged so as to extend near the bottom of the water channel 1, and a screen waste collecting and discharging device 8 is provided in the screen 7.

The belt type screen 7 has a required width according to the ability of the screen and a length (overall length) according to the depth of the water channel, and has a mesh width suitable for the screen over almost the entire length. The flat plate is made of punching metal with holes of required diameter and a large number of holes at the hole pitch, and is joined endlessly. Set it appropriately so that it can be bent smoothly at the position.

The belt type screen 7 is a belt-shaped flat plate having a smooth surface, in which holes having hole diameters suitable for the screen are arrayed at a required pitch to form an endless shape, for example, punching metal is used, and the holes H are arrayed. The direction can be either aligned or staggered, but the lines connecting the centers of the adjacent holes H are arranged so that they are all at a predetermined angle with respect to the reference line M.
In addition, a force for peeling off the dust G entangled with the screen is applied in the reference line direction.

Further, at a position above the water surface of the belt type screen 7, there is provided a peeling means 4 for peeling and removing from the screen surface such screen dust as tree leaves and string-like dust that is attached to the screen and scraped up. As shown in the figure, the stripping means 4 is provided with a cleaning nozzle 4N so that the cleaning water is sprayed on the upper surface side of the belt type screen 7, that is, on the upper side of the screen back surface side and at a substantially right angle to the screen surface.
And a cleaning nozzle 4M for spraying cleaning water in the same direction with respect to the reference line on the screen surface, whereby the leaves adhered to the screen are separated by the cleaning water spray of the cleaning nozzle 4N, The cleaning nozzle 4M is arranged so as to drop into the residue collecting and discharging device 8 and the cleaning nozzle 4M is provided on the lower surface side of the belt type screen 7, that is, on the lower surface side of the screen, and the cleaning water is supplied in the same direction with respect to the reference line of the screen surface. It is arranged so as to eject. Nothing is caught by the cleaning nozzle 4M in parallel with the water sprayed from the nozzle 4M, so the peeling force acts more strongly on all the dust entangled in the screen, and it is also effective for the string-like dust that adheres to or winds around the screen. Will be removed.

A rotating brush 9 may be used as the stripping means. The rotating brush 9 is arranged on the upper surface, that is, the back surface side of the screen so that the tip of the brush comes into contact with the screen surface, and the rotation direction thereof is aligned with the direction of the reference line of the screen. The rotation of the rotating brush also removes the dust G entangled in the hole H of the screen by removing the entanglement force.

Further, a combination of the cleaning nozzle 4M and the rotating brush 9 may be used as the stripping means. In this case, the direction of spraying the cleaning water from the cleaning nozzle 4M and the direction of rotation of the rotary brush are made parallel to the reference line of the screen, but the direction of rotation of the brush and the direction of spraying the cleaning water are opposite. That is, the rotation direction of the rotary brush is set to be the same as the moving direction of the screen, the cleaning water is jetted in the opposite direction to the screen, and the rotation speed of the brush is set to be lower than the jetting speed of the cleaning water.

The porosity of punching metal is 50-80.
By setting it to about%, efficient dust removal can be performed.

Therefore, when sewage is introduced from the inner side surface of the belt type screen 7 arranged to be driven to rotate in the water channel 1, the screen residue in the sewage water is captured on the inner side surface of the screen, and then the screen. With the rotation of, the captured screen residue is scraped above the water channel. By injecting cleaning water from the upper surface of the screen at a substantially right angle with the cleaning nozzle 4N, dust adhering to the screen surface is separated from the screen surface, and at the lower position, it is installed in the upper part of the screen 7. The collected running water trough and the like are dropped and collected in the collecting and discharging device 8 and discharged outside the water channel. However, the string-like dust that has not been peeled off by the cleaning nozzle 4N and is wrapped around or entangled with the screen is arranged so that the peeling force acts in the same direction with respect to the reference line of the next screen. The stripping means receives a force in the direction of stripping from the screen surface, disengages from the screen surface, and drops into the collecting and discharging device 8. In this way, the peeling force is applied in the direction parallel to the screen reference line, so not only the dust adhering to the screen surface is wrapped around, but also the entangled string-like dust is unwound and untangled, making sure. Will be removed.

In the embodiment shown in FIG. 1, the collecting / discharging device 8 has one or two U-shaped or V-shaped troughs 81 arranged in the width direction of the screen, and a collecting trough is connected to one end of the inclined flowing water trough 81. Then, the screen residue that has fallen and collected in the trough 81 is further conveyed and discharged to the outside of the water channel through the collecting trough 82.

[0016]

The filter body moving type dust remover of the present invention is arranged in such a manner that the line connecting the center lines of the adjacent holes formed in the plate material having a smooth surface has a predetermined angle with respect to the reference line. Since a means for applying a peeling force in the direction of peeling the dust entangled in the screen in the direction of this reference line is provided, the string-shaped dust that is wrapped around the screen or entangled with this can also be wrapped around this screen.
A peeling force is created in the direction to loosen the entanglement, so that not only dust that has adhered but also dust that is hard to peel off can be reliably peeled off, and the screen residue does not clog the screen eyes even during long-term operation Has the advantage that it can be removed smoothly.

[Brief description of drawings]

FIG. 1 is a front view of a filter body moving type dust remover of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a front view of a different embodiment of the present invention.

FIG. 4 is an explanatory diagram of a screen of the present invention.

FIG. 5 is an explanatory diagram of dust entwined with the screen.

FIG. 6 is a diagram illustrating the removal of entangled dust.

FIG. 7 is an explanatory diagram using a rotating brush.

[Explanation of symbols]

 1 Water channel 2 Dust remover 4N, 4M Cleaning nozzle 5, 6 Roller or drum 7 Belt type screen 9 Rotating brush M Reference line H Hole G Garbage

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[Procedure amendment]

[Submission date] May 7, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

[Title of the Invention] Filter body moving type dust remover

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter body for surely removing dust, which is attached to or entangled with a belt type screen using punching metal, and other fine dust such as films and strings from the screen during sewage treatment. The present invention relates to a mobile dust remover.

[0002]

2. Description of the Related Art Rainwater that falls in urban areas and domestic wastewater is
It is collected at a sewage treatment plant through an underdrain / sewer, etc., and after removing the dust contained in the sewage here, this sewage is directly or pumped up and sent to the next treatment tank for treatment. Anything that exceeds it is discharged to the river as it is. A bar screen or the like is generally used to remove fine dust in the sewage.

[0003]

However, when a fixed bar screen is used for removing fine dust as in the prior art, the effective passage area of the screen is reduced by reducing the mesh width of the screen, which is common in the case of rainfall. If a large amount of sewage is poured into the wastewater for treatment, the loss will be large, and film and string-like dust is more likely to come off than the screen mesh, and in the case of a mesh screen, dust is easily entangled and reliable removal is difficult. Met. Also, in a screen using a wire mesh, the leaves and the like in the dust can be easily removed, but the elongated string-like substance is inserted into the crossing part of each wire of the mesh screen and entangled or entangled, which is difficult to remove. However, there are drawbacks such that clogging progresses and the water flow capacity of the screen decreases.

It is an object of the present invention to remove dust by reliably removing even film-like or string-like dust that is wrapped around a screen or entangled.

[0005]

The present invention has been made to achieve the above object, and a belt-type screen formed by punching a large number of holes in a flat plate is sunk parallel to the water channel and below the water surface of the water channel. The belt type screen is installed on the belt type screen in a filter type moving dust remover which is designed to rotate and drive the belt type screen to remove dust trapped on the screen or caught on the screen. The lines connecting the center lines of the adjacent holes drilled on the smooth plate are arranged and arranged so that they all have a predetermined angle with respect to the reference line, and in the direction of this reference line, the dust tangled with the screen is removed. The gist is that a means for giving a peeling force is provided to remove dust.

[0006]

[Function] An endless belt-shaped screen made of punching metal that is rotationally driven is provided in the water channel, and the line connecting the center lines of the adjacent holes for punching this belt type screen on a plate material with a smooth surface is relative to the reference line. All are arranged so as to have a predetermined angle, and a means for applying a peeling force in the direction of peeling the dust tangled with the screen in the reference line direction is provided to remove the dust.
Dust that is wrapped around or entangled with the belt-type screen will be naturally released from the wrapping and entanglement, and will be reliably removed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The filter body moving type dust remover of the present invention will be described below with reference to the illustrated embodiments. In the figure, reference numeral 1 designates a water channel, and a filter body moving type dust remover 2 which mainly comprises a belt type screen having an endless punching metal having a required hole diameter and number of holes is installed. The filter body moving type dust remover 2 rotatably supports a roller or wheel 5 driven by a driving device and a plurality of driven rollers or wheels 6 and 6 on a body frame 3 installed on a water channel. The belt-type screen 7 is looped or folded in two as shown in the drawing in an endless manner on the rollers or wheels 5, 6, 6 ... The water channel 1 is arranged so as to extend near the bottom of the water channel 1, and a screen waste collecting and discharging device 8 is provided in the screen 7.

The belt type screen 7 has a required width according to the ability of the screen and a length (overall length) according to the depth of the water channel, and has a mesh width suitable for the screen over almost the entire length. The flat plate is made of punching metal with holes of required diameter and a large number of holes at the hole pitch, and is joined endlessly. Set it appropriately so that it can be bent smoothly at the position.

The belt type screen 7 is a belt-shaped flat plate having a smooth surface, in which holes having hole diameters suitable for the screen are arrayed at a required pitch to form an endless shape, for example, punching metal is used, and the holes H are arrayed. The direction can be either aligned or staggered, but the lines connecting the centers of the adjacent holes H are arranged so that they are all at a predetermined angle with respect to the reference line M.
In addition, a force for peeling off the dust G entangled with the screen is applied in the reference line direction.

Further, at a position above the water surface of the belt type screen 7, there is provided a peeling means 4 for peeling and removing from the screen surface such screen dust as tree leaves and string-like dust that is attached to the screen and scraped up. As shown in the figure, the stripping means 4 is provided with a cleaning nozzle 4N so that the cleaning water is sprayed on the upper surface side of the belt type screen 7, that is, on the upper side of the screen back surface side and at a substantially right angle to the screen surface.
And a cleaning nozzle 4M for spraying cleaning water in the same direction with respect to the reference line on the screen surface, whereby the leaves adhered to the screen are separated by the cleaning water spray of the cleaning nozzle 4N, The cleaning nozzle 4M is arranged so as to drop into the residue collecting and discharging device 8 and the cleaning nozzle 4M is provided on the lower surface side of the belt type screen 7, that is, on the lower surface side of the screen, and the cleaning water is supplied in the same direction with respect to the reference line of the screen surface. It is arranged so as to eject. Nothing is caught by the cleaning nozzle 4M in parallel with the water sprayed from the nozzle 4M, so the peeling force acts more strongly on all the dust entangled in the screen, and it is also effective for the string-like dust that adheres to or winds around the screen. Will be removed.

A rotating brush 9 may be used as the stripping means. The rotating brush 9 is arranged on the upper surface, that is, the back surface side of the screen so that the tip of the brush comes into contact with the screen surface, and the rotation direction thereof is aligned with the direction of the reference line of the screen. The rotation of the rotating brush also removes the dust G entangled in the hole H of the screen by removing the entanglement force.

Further, a combination of the cleaning nozzle 4M and the rotating brush 9 may be used as the stripping means. In this case, the direction of spraying the cleaning water from the cleaning nozzle 4M and the direction of rotation of the rotary brush are made parallel to the reference line of the screen, but the direction of rotation of the brush and the direction of spraying the cleaning water are opposite. That is, the rotation direction of the rotary brush is set to be the same as the moving direction of the screen, the cleaning water is jetted in the opposite direction to the screen, and the rotation speed of the brush is set to be lower than the jetting speed of the cleaning water.

The porosity of punching metal is 50-80.
By setting it to about%, efficient dust removal can be performed.

Therefore, when sewage is introduced from the inner side surface of the belt type screen 7 arranged to be driven to rotate in the water channel 1, the screen residue in the sewage water is captured on the inner side surface of the screen, and then the screen. With the rotation of, the captured screen residue is scraped above the water channel. By injecting cleaning water from the upper surface of the screen at a substantially right angle with the cleaning nozzle 4N, dust adhering to the screen surface is separated from the screen surface, and at the lower position, it is installed in the upper part of the screen 7. The collected running water trough and the like are dropped and collected in the collecting and discharging device 8 and discharged outside the water channel. However, the string-like dust that has not been peeled off by the cleaning nozzle 4N and is wrapped around or entangled with the screen is arranged so that the peeling force acts in the same direction with respect to the reference line of the next screen. The stripping means receives a force in the direction of stripping from the screen surface, disengages from the screen surface, and drops into the collecting and discharging device 8. In this way, the peeling force is applied in the direction parallel to the screen reference line, so not only the dust adhering to the screen surface is wrapped around, but also the entangled string-like dust is unwound and untangled, making sure. Will be removed.

In the embodiment shown in FIG. 1, the collecting / discharging device 8 has one or two U-shaped or V-shaped troughs 81 arranged in the width direction of the screen, and a collecting trough is connected to one end of the inclined flowing water trough 81. Then, the screen residue that has fallen and collected in the trough 81 is further conveyed and discharged to the outside of the water channel through the collecting trough 82.

[0016]

The filter body moving type dust remover of the present invention is arranged in such a manner that the line connecting the center lines of the adjacent holes formed in the plate material having a smooth surface has a predetermined angle with respect to the reference line. Since a means for applying a peeling force in the direction of peeling the dust entangled in the screen in the direction of this reference line is provided, the string-shaped dust that is wrapped around the screen or entangled with this can also be wrapped around this screen.
A peeling force is created in the direction to loosen the entanglement, so that not only dust that has adhered but also dust that is hard to peel off can be reliably peeled off, and the screen residue does not clog the screen eyes even during long-term operation Has the advantage that it can be removed smoothly.

[Brief description of drawings]

FIG. 1 is a front view of a filter body moving type dust remover of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a front view of a different embodiment of the present invention.

FIG. 4 is an explanatory diagram of a screen of the present invention.

FIG. 5 is an explanatory diagram of dust entwined with the screen.

FIG. 6 is a diagram illustrating the removal of entangled dust.

FIG. 7 is an explanatory diagram using a rotating brush.

[Explanation of symbols] 1 Water channel 2 Dust remover 4N, 4M Cleaning nozzle 5, 6 Roller or drum 7 Belt type screen 9 Rotating brush M Reference line H Hole G Garbage

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

[Figure 6]

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

Claims (3)

[Claims] 1. A belt-type screen formed by punching a large number of holes on a flat plate is arranged so as to be parallel to a water channel and to be submerged below the water surface of the water channel, and the belt-type screen is rotationally driven, and In a filter type moving dust remover designed to remove dust trapped on the screen or caught on this screen, the line connecting the center lines of the adjacent holes that pierce the belt screen on a plate with a smooth surface becomes the reference line. On the other hand, all of them are arranged so as to have a predetermined angle, and a means for giving a peeling force in the direction of peeling the dust tangled with the screen in the reference line direction is provided to remove the dust. Characteristic mobile filter type dust remover. 2. The filter body moving according to claim 1, wherein the means for applying a peeling force in the direction of the reference line of the screen is provided with a cleaning nozzle so as to spray the cleaning water obliquely from the screen surface to the screen surface. Type dust remover. 3. A cleaning nozzle provided with a means for applying a peeling force in the direction of the reference line of the screen so that the cleaning water is sprayed obliquely from the screen surface to the screen surface, and the cleaning nozzle is opposite to the cleaning nozzle. The filter body moving type dust remover according to claim 1, further comprising a rotating brush that brushes the screen surface in the opposite direction from the side surface.