JPH07108107A - Moving filter-medium type dust collector - Google Patents

Abstract

PURPOSE:To continuously perform dust removal without the lowering of the filtration efficiency of wastewater by a filter medium by surely removing a film or yarn-like dirt twining around the filter medium of a punching metal. CONSTITUTION:A filter medium is formed of a flat plate in which a lot of holes are made. The filter media are arranged in an adjacent relation and both the ends of them each are connected by endless chains to form a belt screen. The belt screen is spread and hung like a W-shape or a U-shape so that it may be parallel to a water pass and be submerged in water in the water pass, and driven and rotated to remove dirt caught by the screen or twining around the belt screen. As a means for forcibly scraping off and removing dirt sticking to or twining around the surface of the screen, a rotary brush 4 is arranged on the surface of the belt screen. The rotary brush 4 is supported on an oscillating frame 4W which is supported on a bracket 4B projecting from a body frame 3 so as to oscillate at a previously determined angle, and also the oscillating frame 4W is provided with a motor 9 for rotating the rotary brush and a motor 4M for oscillating the oscillating frame.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt type screen using a punching metal, a net or the like as a filter body in the treatment of sewage, in which dust attached to or entangled with the belt type screen and other thin films, strings and the like. The present invention relates to a filter body moving type dust remover capable of reliably removing dust and the like from a screen.

[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 conventional case, the effective passage area of the screen is reduced by reducing the mesh width of the screen. 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 is wrapped or entangled, which is difficult to remove. However, there are drawbacks such that clogging progresses and the water flow capacity of the screen decreases. Furthermore, a belt type screen using punching metal for the filter body may be adopted,
The punching metal is perforated at a predetermined position, and dust adhering to the punching metal is removed by contacting the screen surface with a rotating brush. Therefore, the dust entangled between the holes drilled in parallel to the brush axis has a stripping width with the brush that is the same as between the drilling holes, and can be stripped relatively reliably.
The dust tangled between the holes diagonally adjacent to the brush shaft has a narrow contact width with the brush and cannot be reliably removed.

The object of the present invention is to reliably remove even dust or film-like matter that is wrapped around a perforated metal filter body or entangled to remove dust continuously without lowering the filtration efficiency of wastewater by the filter body. And

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object. A filter body formed by punching a large number of holes in a flat plate is adjacent to each other, and both ends thereof are connected by an endless chain. A belt-type screen is constructed by arranging the belt-type screen in a W-shape so that it is parallel to the water channel and submerged below the water surface of the water channel. In the filter body moving type dust remover designed to remove the dust entangled in the belt type screen, the belt type screen surface is rotated as a means for forcibly removing the dust attached or entangled with the screen surface. A brush is provided, and the rotating brush is supported by a swing frame that is supported by a bracket projecting from the body frame so as to swing at a predetermined angle.
The gist is that a motor for rotating the rotating brush and a motor for swinging the swing frame are provided on the swing frame.

[0006]

A screen having an endless belt made of punching metal which is rotationally driven is disposed in the water channel, and a rotary brush arranged so as to be in contact with the surface of the belt type screen while rotating is attached to the belt type screen. Since a line parallel to the width direction is used as a reference line and the support shaft of the swing frame is used as the center for swinging to the left and right within a predetermined angle, it can be installed in any direction between the holes. The brush also gives a force to peel off entangled debris, and the entrained debris is wound around the belt-type screen, and the entangling and entangling is naturally released and 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. This filter body moving type dust remover 2 has a main body frame 3 installed in a water channel, a drive sprocket wheel 5 and a driven sprocket wheel 6 driven by a drive device 4.
a is rotatably supported, and an endless belt-shaped screen 7 is stretched in two folds such as a W shape between the sprocket wheels 5, 6a, and the belt-shaped screen 7 is folded in two. The lower part is arranged in a stretched manner so as to reach almost the bottom of the water channel 1, and a screen dust collecting and discharging device S is provided in the belt-shaped screen 7 and above the water surface.

The dust remover 2 disposed in the water channel 1 is provided in the water channel as shown in FIG. 9 so that the sewage can surely flow into the loops 7A, 7B of the W-shaped belt type screen 7. In addition, a shielding wall 11 also serving as a running water guide is provided so that the top is located at a position lower than the floor surface, and the belt type screen 7 that hangs in the waterway by this shielding wall 11 or a guide rail 12 provided on the main body frame 3. Is slidably supported.

This is provided with guide rails 12 and 12 for U-shaped screens provided in the longitudinal direction of the main body frame 3 and in opposition to the upstream side and the downstream side of the water channel.
The two edges of the belt type screen are slidably supported between 2 and 12, and the sewage is surely made to flow into the belt type screens 7A and 7B hanging in a U shape by the shielding wall. After passing through the formula screen, it is filtered so as to flow out to the water channels 7c, 7c outside the screen.

The belt type screen 7 comprises a flat plate having a smooth surface, in which holes having hole diameters suitable for the screen are arranged and punched at a required pitch to form a filter body. For example, punching metal may be used, and the holes H may be arranged in either an aligned arrangement or a zigzag arrangement as shown in the drawing. The filter bodies 71 having the required width and length formed in this way are adjacent to each other, and endless link chains 72 are arranged at both ends of the filter bodies 71, and the filter bodies are integrally attached to the link chains. The link chain is hung on a sprocket wheel in the previous term, and the chain roller of the link chain 72 is fitted in the U-shaped groove of the guide rail 12 and slidably supported.

Further, the filter body 71 comprises a filter body frame and a filter plate, and the filter plate uses the punching metal,
The hole diameter and hole pitch of this punching metal are appropriately determined depending on the size of dust to be removed.

A collecting / discharging device S for fried dust is arranged at least above the water surface in an endless belt type screen 7 stretched in a W-shape on the main body frame 3, and the collecting / discharging device S is U-shaped. Alternatively, a V-shaped trough is arranged in the width direction of the screen, and a collecting trough is connected to one end of this slanted trough, and the trough is conveyed and discharged to the water channel side. Then, after the screen residue in the dirty water is captured on the inner surface of the belt type screen 7, the screen is rotated so that it is scraped up above the water channel by the rotation of the screen and surely falls and collects in the collecting and discharging device S. Brush 4B and cleaning nozzle 4N
And.

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 a screen residue such as a leaf or string-like dust which is attached to or entangled with the screen and is scraped off from the screen surface. As shown in the figure, the stripping means 4 is provided with a rotary brush at a position on the surface side of the belt type screen 7 and in contact with the screen surface. Then, if necessary, the cleaning nozzle 4N is arranged so as to spray the cleaning water toward the back surface of the belt type screen at the brush position or at a position upstream of the brush position. As a result, the leaves adhered to the screen are peeled off from the back surface of the screen by the cleaning water spray of the cleaning nozzle 4N and fall into the screen residue collecting and discharging device 8, and are entangled which are not removed by the cleaning nozzle. The strong stripping force of the rotating brush makes the dust stronger against all the dust entangled in the screen and effectively removes it.

As a stripping means, the rotary brush 4 is arranged on the surface of the belt type screen, that is, on the lower surface side of the screen in FIG. 1 so that the tip of the brush comes into contact with the width direction of the screen surface. The dust G entangled in the hole H is also removed by removing the entanglement force. Further, it is more efficient to reverse the brush rotating direction from the same direction from time to time so that the entangled dust is moved back and forth to solve it.

As a stripping means, the rotary brush 4 is shown in FIGS.
As shown in FIG. 2, a bracket 4B is provided on the main body frame 3 so that the swing frame 4W is swingably supported on the bracket and is provided on the bracket, and the swing motor 4M swings at a predetermined angle. The oscillating frame is oscillated, and the rotary brush 4 is rotatably supported at the tip of the oscillating frame. Further, the shaft of the rotary brush is supported by the oscillating frame, and one end of the brush shaft is supported. A brush rotating motor 9 is connected to the rotary brush 4 via a coupling, and thereby the rotary brush 4 is driven at a required rotational speed.

The rocking angle of the rocking frame 4W is a line parallel to the width direction of the screen as a reference line, and the rocking frame 4W rocks to the left and right within a predetermined angle about the supporting shaft of the rocking frame. To determine. This angle is preferably the length required to remove dust tangled between the holes, which is formed by the angle between the center line of the rotating brush and the line connecting the center lines of adjacent holes in the horizontal and diagonal directions punched in the punching metal. Therefore, as shown in FIGS. 3 and 4, even if dust tangled between adjacent holes in any direction, the length in contact with the rotating brush is maximized to remove the dust.

Therefore, when sewage is caused to flow 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 is captured by the inner side surface of the belt type screen, When the screen is rotated, the captured screen residue is scraped above the water channel. The cleaning water is sprayed from the upper back surface of the screen by the cleaning nozzle 4N to remove dust adhering to the screen surface from the screen surface, and collect and discharge running water troughs and the like installed at the lower position. It is collected in the device 8 and discharged outside the waterway. However, the string-like dust that is wrapped around or entangled with the belt-type screen that has not been peeled off by the cleaning nozzle 4N is the next stripping means, that is, the rotation of the rotary brush and the swing of the brush shaft center. Depending on the combination, the belt type screen receives a force in the direction of peeling and is disengaged from the screen surface, and the collecting and discharging device 8
Fall inside.

As described above, the swinging and rotating of the rotary brush exerts a peeling force on dust that is entangled between holes in any direction of the punching metal, so that only dust that adheres to the screen surface can be removed. Instead of winding or entwined string-like waste, the winding and entanglement is loosened,
It will surely be removed. Further, by rotating the brush in the forward and reverse directions, the dust entangled in the holes is moved back and forth to be unraveled, whereby the dust can be efficiently removed.

[0019]

In the filter body moving type dust remover of the present invention, a belt type screen is constructed by adjoining filter bodies formed by punching a large number of holes in a flat plate and connecting both ends with endless chains.
This belt-type screen is installed in a W-shape so that it is parallel to the waterway and submerged below the water surface of the waterway. The belt-type screen is driven to rotate, and the dust caught on the screen or entangled in the belt-type screen In the filter body moving type dust remover adapted to remove, the belt type screen surface is provided with a rotating brush as a means for forcibly removing the dust attached or entangled with the screen surface,
The rotating brush is supported by a swinging frame supported by a bracket protruding from the main body frame so as to swing at a predetermined angle, and a motor for rotating the rotating brush and a swinging frame swing are supported on the swinging frame. Since it has a moving motor, the brush gives a force to remove dust entwined in any direction between the holes, and it is wrapped around the belt type screen, and the entangled dust is not entangled or entangled. There is an advantage that it can be removed and peeled off reliably, and the screen residue can be removed smoothly without clogging the screen even during long-term operation.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a stripping means of a filter body moving type dust remover of the present invention.

FIG. 2 is a side view of the stripping means.

FIG. 3 is a front view of a filter body of a belt type screen.

FIG. 4 is an explanatory diagram showing a relationship between a filter body and a peeling means.

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 a front view showing the whole form of the filter body moving type dust remover of the present invention.

FIG. 8 is a side view of the same.

FIG. 9 is a plan view of the same.

[Explanation of symbols]

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

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display area C02F 1/00 L

Claims (3)

[Claims] 1. A belt type screen is constructed by adjoining a filter body formed by punching a large number of holes on a flat plate and connecting both ends thereof with an endless chain. The belt type screen is parallel to a water channel, and The water channel is placed in a W-shape or a U-shape so as to be submerged below the surface of the water. The belt-type screen is driven to rotate, and the dust caught on the screen or entangled in the belt-type screen is removed. In the filter body moving type dust remover, a rotating brush is arranged on the belt type screen surface as a means for forcibly removing the dust adhering to or entangled with the screen surface, and the rotating brush is projected on the main body frame. The bracket is supported by a swing frame that swings at a predetermined angle, and a motor for rotating the rotating brush and a motor for swinging the swing frame are mounted on the swing frame. A filter-type movable dust remover characterized by being worn. 2. The filter body moving type dust remover according to claim 1, wherein the rotating brush attached to the swing frame can rotate in the forward and reverse directions. 3. The filter body moving type dust remover according to claim 1, wherein the rotating brush attached to the swing frame is capable of rotating in the forward and reverse directions and the swing of the swing frame is combined.