KR0119881Y1 - Screen for filtering waste water - Google Patents

Abstract

The present invention relates to a wastewater filtration screen device, the bottom is fixed and the top is not fixed to the screen bar 4 is arranged at a constant interval parallel to the front, and the motor (1) in the rear of the screen bar (4) Chain gears (2, 2 ') rotated by the driving of the upper and lower are connected to the chain (3), a plurality of rake (6) is fixed to the rake (5) in the chain (3) In the screen device (6) is moved from the bottom to the top to remove the foreign matter by the gap between each screen bar (4), the screen bar (4) is the flow direction of water to maintain a sufficient strength while increasing the flow of water The thickness is thickened, the right angle direction is narrow and its cross-sectional shape is formed in an inverted triangle shape, is installed on the lower portion of the front of the screen bar 4, the anti-vibration plate for elastically supporting the front portion of the screen bar (8) ) And at the rear side of the screen bar 4 It is installed in the conveyed chain (3) consists of a support bar (9) for supporting the back of the screen bar (4) when the transfer of the rake (5), inverted triangular shape that can maintain the screen bar according to the flow path direction By forming and installing it, it is possible to improve the porosity of the waste water and the strength of the screen bar, and put the foreign matter separately to the upper side of the screen bar while the rake smoothly lifts the foreign matter caught between the screen bars to be treated after When the rake is separated from the upper part of the screen bar, the bounce phenomenon may stabilize the screen bar by the anti-shake plate, thereby significantly improving the wastewater filtration process.

Description

Wastewater Filtration Screen Unit

1 is a front view of the screen device according to the present invention,

2 is a longitudinal sectional view showing a state in which a screen device according to the present invention is installed in a channel;

3 is an enlarged sectional view taken along the line A-A of FIG.

4 is a partially enlarged furnace shown in FIG. 2 of the present invention,

(a) is an enlarged view of portion B,

(b) is an enlarged view of portion C.

* Description of the symbols for the main parts of the drawings *

1: Motor 2,2 ': Chain gear

3: chain 4: screen bar

5: Rake 6: Rake

7: inflow preventing plate 8: shaking plate

9: support rod 10: tension control chain gear

11: tension adjusting bolt

The present invention relates to a wastewater filtration screen device for filtering and removing insoluble foreign matter such as suspended solids and solids contained in the wastewater.

In general, wastewater contains a large amount of large and small solids, but when the wastewater is collected in the sump without removing the solids, solids are deposited on the bottom of the sump to rot, resulting in odors and harmful gases, or a large amount of waste. If solids accumulate, the sump will be paralyzed, requiring frequent cleaning of the sump. In addition, problems such as clogging of the pump or damage to each part of the wastewater treatment apparatus are caused by solids.

Therefore, a screen device for removing solid matter is required before the waste water is collected in the sump tank. As a screen device that filters foreign substances in a conventional waste water filtration tank or a waste water flow channel, an auto bar screen is used. , Rake Screen and Brush Screen were mainly used.

The auto bar-screen device arranges a plurality of steel round bars in parallel at a predetermined interval and installs them inclined in a waterway, and sandwiches the rakes driven by a motor and two rows of chains between the round bars. It is a method of scraping up the foreign matter blocking the gap between the lower part and the upper part to be automatically drawn out, and the Rake Screen device is inserted into the plastic resin extractor with a certain gap and driven like an auto bar-screen. The brush screen is a method of filtering the brush screen, and a perforated plate, a straight network, etc. are installed in an inclined manner in the waterway, and a stiff brush is a method of scraping up by driving of a chain like an auto bar-screen.

However, since the auto bar-screen apparatus supports the water pressure by the strength of the round bar, the screen bar has to be made thicker. For this reason, the diameter of the round bar is relatively low and the opening ratio is relatively low. In order to handle all the flows in, the channel had to be expanded and the width of the screen widened. When the rake enters between the screen bars, when the rake enters between the screen bars, it obstructs the direction of the rake when it is stretched or tangled. Even if the screen bar is bent or damaged by the bending of the screen bar or the rake blade, the foreign matter is fixed in the screen bar. When the rake is connected to the upper part of the screen bar, the screen bar is separated from the rake supporting the screen bar. Bounce off and entangle each other (that is, It does not lock) there is a problem.

The present invention has been devised to solve the above problems, and it is possible to maintain the sufficient strength against the resistance of the water passing while narrowing the width of the screen bar in the flow path as much as possible, and minimize the gap between the pore rate for waste water filtration. The aim is to improve this.

Another object of the present invention is to prevent the deterioration of the screen bar and the rake by preventing the foreign matter is attached to the portion where the rake enters between the screen bar.

Another object of the present invention is to install a separate support bar on the rear of the rake fixed to the rake, and to attach the screen bar escape prevention plate on the front of the screen bar, when the rake comes out of the upper part of the screen bar, the screen bars are entangled with each other To prevent them.

According to a form of the present invention for achieving the above object, the bottom is fixed and the top is not fixed to the screen bar arranged in parallel at a predetermined interval on the front side, the chain gear rotated by the drive of the motor on the rear of the screen bar In the screen device installed in the upper and lower, and connected to the chain, a plurality of rakes are fixed to the rake in the chain, the rake is moved from the bottom to the top by the gap between each screen bar to remove foreign matters, the screen bar To increase the flow of water while maintaining sufficient strength, the thickness is thicker with respect to the flow direction of the water, the right-angle direction is narrower so that the cross-sectional shape is formed in an inverted triangle shape, it is installed in the lower part of the front of the screen bar to introduce foreign matter Inflow prevention plate to prevent the, and is installed on the front upper portion of the screen bar to elastically support the front portion of the screen bar The bottom board and the East, the screen is installed on the chain is conveyed from the back side of the bar for waste consisting of a support bar for supporting the rear surface of the screen beneath the bars when one transfer rake filtering screen apparatus is provided.

Hereinafter, with reference to the accompanying drawings of the present invention will be described in detail the configuration of the present invention.

A plurality of screen bars (4) fixed at the lower end and not fixed at the upper end are installed in parallel on the front side, and chain gears (2, 2 ') rotated by the motor (1) are installed on the rear side, and the chain ( 3) in the chain (3) a plurality of rakes (6) are fixed to the rake (5) so that the rake (6) is moved from the bottom to the top by the gap between each screen bar (4) Regarding the screen device to be removed, the cross-section of the screen bar (4) is formed in the form of an inverted triangle to increase the thickness of the water flow direction (13) so as to maintain sufficient strength while increasing the flow of water, the right angle The direction is narrow.

In addition, the front lower portion of the screen bar (4) to prevent the hard and long foreign matters to be caught in the lower gap is not stretched or tangled and at the same time to facilitate the rake (6) to enter between the screen bar (4). Install the foreign matter inflow prevention plate 7 and prevent the screen bar 4 from being thrown to the front when the rake 6 is detached from the upper bent portion of the screen bar 4 on the front upper part of the screen bar 4. Install the rocking prevention plate (8) for the support bar 9 of the fixed or rotational type (rotated by friction with the back of the screen bar) to support the screen bar 4 is installed.

In addition, a tension control chain gear 10 for adjusting the tension of the chain 3 is installed at the lower portion of the upper chain gear 2, the tension control bolt 12 is installed on the tension control chain gear 10. Since the position of the tension control chain gear 10 can be adjusted, and an idling chain gear 11 is installed at the top of the tension control chain gear 10 to install the idling chain at the top of the tension chain control gear 10. The gear 11 is installed to adjust the tension of the chain 3 together with the tension chain adjusting gear 10.

On the other hand, in the lower portion of the curved end on the upper side of the screen bar (4) is provided with a treatment box (D) that can be separately contained floating or solid material carried from the rake (6) of the rake (5) to be transported do. This treatment box (D) is installed by a conveyor (omitted in the drawing) according to the installation so that the solids can be transported and treated to one side of the waterway.

Referring to the effect of the wastewater filtration screen device of the present invention configured as described above are as follows.

The screen device of the present invention is installed in a channel into which wastewater flows in, but the screen device is installed at an angle of about 60 °. The wastewater flowing out along the channel passes through the screen bar 4 of the screen device which is inclinedly installed. Here, the screen device operates the rake 5 by the continuous driving of the motor 1 or a set time in the fixed state.

On the other hand, the suspended solids and solids mixed in a large amount of waste water is contained in the waste water in a predetermined size to pass through the screen bar (4), which is caught on the front of the solid or screen bar (4) having a certain size, after a certain time It is caught as a band on the surface of the water, and the solid material is in a state in which a predetermined amount is hung on the front surface of the screen bar 4 formed from the upper part to the lower part of the life.

At this time, the screen bar (4) is suspended and suspended solids (hereinafter referred to as foreign matter) load the screen bar in the direction of water flow, but the water pressure is sprayed while the resistance area of the water is in contact with the plane of the inverted triangle, The wastewater to be filtered is passed between the screen bars 4. That is, the screen bar 4 having an inverted triangle shape can withstand loads due to water pressure, compared to a screen bar having a round bar or a straight cross section.

The right-angle direction of the screen bar 4, that is, the direction in which water passes through is in the form of an inverted triangle, so that water passes quickly along the inclined surface of the screen bar when passing between the screen bars of the water.

In addition, the process of treating the foreign matter contained in the wastewater passing through the screen bar 4 and caught on the screen bar will be described. Rake 6 is rotated from the rear side is moved upwards in accordance with the rotation of the chain (3) installed connected to the rake (5) is first raised while lifting the solids deposited on the lower side of the screen bar (4), Subsequently, ascending while lifting up a part of the float caught on the screen bar 4 on the water surface side.

Both sides of the rake table 5 in which the rake 6 is installed at a predetermined distance from one end of the foreign matter inflow preventing plate 7 are installed at predetermined intervals so that the chain 3 rotated by the motor 1 is rotated. If it is stretched or is too tensioned, the tension adjustment bolt 12 installed in the tension control chain gear 2 is screwed to a certain length so that the chain 3 is tensioned to properly adjust the tension of the chain 3. To ensure a smooth transfer.

Here, the raised rake (6) is to raise the foreign matter between each screen bar (4), the rake (6) a certain amount according to the length of the projecting between the screen bar 4 and the inclined angle of the screen bar (4) Can lift foreign objects.

As the rake 6 is raised, one end of the rake 6 is inclined as shown in (a) of FIG. 4, while pushing and pressing the rocking preventing plate 8 supporting the upper side of the screen bar 4 as it is. Is raised.

At this time, the inclined and bent portion of the anti-vibration plate 8 which is laterally contacted with a portion of the screen bar 4 is spaced apart by the screen bar 4 and the foreign matter being rolled up on the rake 6 is the anti-vibration plate 8 While keeping the form in contact with the inclined portion of the) while keeping the foreign matter by a certain amount as it is normal.

Also, due to the interference of the rake 6, which is loaded with foreign matter, the screen bar 4 is often in a state where the gap is narrower than the thickness of the rake, particularly in the upper part of the screen bar in the transfer state of the rake 6. When 6) is detached, the phenomenon of bounce occurs. In this process, the anti-vibration plate 8 supports the upper part of the screen bar 4 on which the top is not fixed to prevent deformation of the screen bar due to the bounce phenomenon.

In more detail, when the rake 6 is tightly sandwiched between the screen bars 4 and moved away from the upper portion, the screen bar 4 is bounced off by the force of the rake 6 being separated. (5) can be minimized by the support force on the support rod (9) installed in close contact with the rear side, and the screen bar (4) is slightly bounced off of the shaking plate (8) installed on the upper front of the screen bar (4) The screen bar 4 is evenly pressed in a parallel state by the load, thereby preventing the screen bar 4 from being entangled.

The rake 6 continuously transported in the above state is separated from the curved screen bar 4 at the upper side, and the foreign material caught on the rake at the same time as the detachment of the rake 6 flows along the curved portion and is attached to the second. As shown in the figure is contained in the processing box (D) that is installed separately on the back of the screen device.

On the other hand, the rake 6 which is separated from the screen bar 4 is caught in the front of the screen bar 4 as described above in accordance with the continuous rotation transfer to the chain 3, the rake 5 is installed. The wastewater can be filtered while repeatedly performing the operation of lifting the foreign matter.

As described above, the present invention is formed by installing in an inverted triangle shape that can maintain the screen bar according to the flow path direction, thereby improving the opening ratio of the wastewater and the strength of the screen bar, and the rake caught between the screen bars. If you can post-process by putting the foreign matter to the upper side of the screen bar while smoothly lifting it, the splashing phenomenon generated when the rake is separated from the upper part of the screen bar is stabilized the screen bar by the shaking plate to treat the wastewater filtration. There is an effect that can be significantly improved.

Claims (2)

Screen gears 4 fixed at the lower end and not fixed at the top are arranged in parallel to be spaced apart at the front, and the chain gears 2 and 2 rotated by the driving of the motor 1 at the rear of the screen bar 4. ') Installed up and down and connected to the chain (3), a plurality of rakes (6) are fixed to the rake (5) in the chain (3) so that the rake (6) between each screen bar (4) In the screen device is moved from the bottom to the top to remove the foreign matter in the gap, The screen bar (4) is made thicker with respect to the flow direction of the water to increase the flow of water while maintaining sufficient strength, and the right-angle direction is narrow so that the cross-sectional shape is formed in an inverted triangle, the screen bar (4) An inflow preventing plate (7) installed at the front lower part of the front plate to prevent the inflow of foreign substances, an oscillation preventing plate (8) installed at the front upper portion of the screen bar (4) and elastically supporting the front part of the screen bar, and the screen Screen for wastewater filtration, characterized in that the support rod (9) is installed on the chain (3) to be transported from the rear side of the bar (4) to support the back of the screen bar (4) during the transfer of the rake (5) Device. According to claim 1, which is installed on the lower side of the upper chain gear (2) and the tension regulating body gear 10 for guiding the chain to be transported by these parts of the chain (3), and the tension regulating gear gear 10 And a tension adjusting bolt 12 connected to one side of the tension control unit for adjusting the tension of the chain gear 3 according to the length adjustment, and a predetermined angle on the central axis of the tension control chain gear 10 is rotatably installed at the position. And an idling chain gear (11) for correcting the tension of the chain (3).