JP2013208580A - Device for removal of fine suspended substance in impurity-containing wastewater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for removal of fine suspended substances in wastewater, capable of using a fine metallic mesh such as 300-350 mesh as a filter.SOLUTION: There is provided a device for removal of fine suspended substances in the wastewater-containing impurities, comprising a rectangular tank which has an opening on an upper surface, a raw material inflow tube on a front wall, and a liquid taking-out tube and a solid material taking-out port continuing into a solid material chute on a rear wall. A filter is set up to the opening to enable oscillating motion, and the raw material inflow tube continues into a branched tube performing a horizontal reciprocation from the front wall toward the rear wall. The raw material liquid flows down and is fed from the branched tube onto the filter, and then is separated into the solid material and the liquid.

Description

The present invention relates to a device for removing fine floating substances from wastewater containing impurities for separating and removing fine floating substances in wastewater for wastewater treatment and the like or contaminants such as printed wiring board peeling residue with a vibrating screen.

When processing wastewater, washing wastewater, etc., if wastewater contains chip waste, hair, or fibrous materials in animal feces, these contaminants are slender and light, so if a sieve is used, Adhering to the surface is likely to cause clogging, and floating is disadvantageous for removing the deposit.

  The inventor previously invented an apparatus for removing fibrous impurities in waste water (see Patent Document 1). This device has an overflow basin connected to the raw water inflow pipe above the front and a take-off pipe below, and a fine wire mesh is installed inside the tank body provided with a solid material outlet connected to the solid chute at the rear. The plate-shaped sieve is mounted on a high-speed rotating eccentric shaft installed in the tank body near the front end, and the rear end is elastically supported by a spring and installed almost horizontally. Water spray pipes are sprayed on the top of the screen, and the upper edge is superposed at the rear end of the screen to create two wide rubber plates, one on the inner wall of the rear wall of the tank body and the other on the solid chute It is an apparatus for removing fibrous impurities in the waste water that are attached to the upper surface depending on the hanging.

Japanese Utility Model Publication No. 60-22987

That is, in this apparatus, one end of a sieve is supported on an eccentric shaft that rotates at high speed, the other end is elastically supported by a spring, the sieve itself is swung, and fibrous impurities supplied on the sieve surface are removed. The contained liquid is separated into fiber contaminants and liquid by a sieve, and the liquid flows down under the sieve and the fibrous contaminants remaining on the sieve surface are a peristaltic granulation action that occurs on the sieve surface due to vibration of the sieve. In response to this, the particles move forward toward the rear end of the sieve while being rounded into scattered particles, and finally fall onto the solid chute.
However, if this device is used to treat the stripping solution of the printed wiring board as raw water, the stripping residue in the stripping solution has been increasingly refined in recent years, and the wire mesh used for the filtration surface of the sieve has a fine mesh of 300-350 mesh. Although continuous processing is required, at present, arbitrary processing is not possible with a limit of 200 mesh.

Furthermore, in this device, the raw water is overflowed from the overflow basin connected to the raw water inflow pipe and dropped to a certain place, so the filtration area of the raw water is small and it is difficult to treat with the fine mesh, and there is solid matter at the rear of the raw water falling point. There was a drawback that some solids remained and the solid residue remained on the front surface.

  As a result of various studies to improve the above-mentioned drawbacks, the present inventor has completed the present invention. The object of the present invention is to increase the amount of treated water and to prevent the clogging by the cleaning effect of the filtration surface. The object of the present invention is to provide a device for removing fine suspended solids from wastewater containing impurities capable of continuously removing fine exfoliation debris with a mesh (350 mesh).

  That is, the gist of the present invention consists of a rectangular tank body having an opening on the upper surface, a raw material inflow pipe on the front wall, and a solid material outlet connected to the liquid extraction pipe and solid chute on the rear wall. A device for removing fine suspended solids from wastewater containing foreign substances, in which a flat plate-like filter is installed almost horizontally so as to be able to swing in the opening, and the filter's filtration area is widely used. Therefore, the raw material inflow pipe is connected to a branch pipe that can perform a horizontal reciprocating motion from the front wall to the rear wall, and the raw material liquid flows down to the filter from the branch pipe and is supplied to separate into liquid and solid matter. It is the fine floating substance removal processing apparatus of the waste_water | drain containing the foreign material to be.

  In the present invention, the tip of the raw material inflow pipe is branched into a plurality of pipes, and the entire branch pipe is continuously reciprocated horizontally, whereby the filtration area of the filter can be expanded over a wide range. Appropriate pump pressure is applied to the raw material water supplied to the slag, and the throughput increases due to the pushing pressure of the raw material water even with a fine mesh. Furthermore, the raw water supplied to the sieve surface by the branch pipe is divided into raw water and raw water. During the backward movement, the foreign matter remaining in the rear part moves forward from the space due to the interaction with the swinging motion of the sieve, and no foreign substance remains on the sieve. The cleaning effect is large and continuous operation is possible. As a result, a fine wire mesh of 300 to 350 mesh can be used as a filter. Furthermore, the distance at the time of the forward movement of the branch pipe can be set arbitrarily, and effects such as the ability to adjust the speed of discharge of impurities to the sieve surface can be achieved.

Side surface sectional drawing of the fine floating substance removal apparatus which concerns on this invention. The top view of the fine floating substance removal apparatus which concerns on this invention. The front view of the fine floating substance removal apparatus which concerns on this invention seen from the straight line AA in FIG. The side view of the eccentric shaft part used by this invention.

In the present invention, the means for swinging the filter is not particularly limited. For example, for example, the front end portion of the filter is received by an eccentric shaft that rotates at a high speed and is provided in a tank body near the front end of the filter. The filter can be swung by supporting the support and resiliently supporting the rear end portion with a spring. Further, in this apparatus, the branch pipe moving means connected to the raw water supply pipe swings the raw water supply pipe back and forth via the swivel joint, and horizontally moves the tip of the branch pipe.
The apparatus for removing suspended solids according to the present invention can be used as an apparatus for removing fine suspended substances in various effluents including a device for removing debris from a printed circuit board or a printed wiring board.

FIG. 1 is a side sectional view of a fine suspended matter removing apparatus according to the present invention, and FIG. 2 is a plan view thereof. 1 and 2, reference numeral 1 denotes a tank body which is formed in a rectangular shape having an open top surface, a raw material inflow pipe 3 is formed in the front wall 2, a liquid take-out pipe 4 is opened in the lower part, and a solid material is formed in the rear wall 5. A solid material outlet 7 connected to the chute 6 is opened.
In the tank body 1, a flat sieve 8 is supported on the tank body 1 via an eccentric shaft 9 whose bottom surface close to the front end is horizontally mounted on the tank body 1, and both sides near the rear end are supported by springs 10 and 10. Attached. The sieve 8 is formed by stretching a fine wire mesh, for example, a 300-350 mesh wire mesh, on a peripheral frame having an erected edge except for the rear end.
As is clear from FIG. 4, the eccentric shaft 9 is formed such that the large-diameter portion 27 is eccentric with respect to the small-diameter portions 28 at both ends, the small-diameter portion 28 is supported by the tank body 1 via a bearing, and the large-diameter portion 27 is It is fixed to the lower surface of the frame body of the sieve 8 through a bearing 29. As shown in FIG. 1, a pulley 14 is fixed to one of the small diameter portions 28, and is connected to the motor 16 of the tank body 1 through a V belt 15.
In the tank body 1, the portion corresponding to the tip of the raw material inflow pipe 3 is connected to the branch pipe 17, and a nozzle 18 is formed at the tip of the branch pipe 17, and raw water flows down from the nozzle 18 toward the sieve 8 ( (See FIG. 3). Raw material water is supplied from a raw water inlet 19 through a raw material inflow pipe 3 ′ connected by a swivel joint 20. The raw material inflow pipe 3 ′ is swung back and forth around the swivel joint 20 by a support 21 attached almost in the middle, whereby the nozzle 18 moves horizontally. The raw material water flows down widely on the surface of the sieve 8 by the horizontal movement of the nozzle 18 of the branch pipe. In addition, two front rubber plates 22 and 23 are attached to the rear end of the sieve 8 by superimposing the upper edges, one of the lower ends is attached to the inner surface of the rear wall 5 of the tank body 1 and the other is a solid material. It is preferable that the solid matter is surely guided to the solid matter outlet through the rubber plate 23 without returning to the sieve surface by dropping over the solid matter outlet 7 along the upper surface of the chute 6.

As described above, the removal apparatus according to the present invention can perform simple separation and efficient separation, and in particular, fine suspended matter in waste water can be separated by a fine sieve of 300 to 350 mesh. Recycling of valuable materials during the production process, for example, separation and removal of printed wiring boards or substrate debris, etc. using a vibrating screen, and cleaning solvent can be recycled for industrial use. Sex is great.

DESCRIPTION OF SYMBOLS 1 Tank body 2 Front wall 3, 3 'Raw material inflow pipe 4 Extraction pipe 5 Rear wall 6 Solid substance chute 7 Solid substance outlet 8 Sieve 9 Eccentric shaft 10 Spring 11 Supporting electric speed reducer 12 Roller (wheel)
13 Guide rail 14 V pulley 15 V belt 16 Electric motor 17 Branch pipe 18 Nozzle 19 Raw water inlet 20 Swivel joint 21 Support 22, 23 Front rubber plate 24 Bearing 25 Fixing bolt 26 Safety cover 27 Small diameter part 28 Large diameter part

Claims (3)

Fine drainage containing a rectangular tank body with an opening on the upper surface, a raw material inflow pipe on the front wall, and a solid material outlet connected to the liquid extraction pipe and solid chute on the rear wall It is a floating substance removing device, and a filter is stretched in the opening so as to perform a swinging motion, and the raw material inflow pipe is connected to a branch pipe capable of performing a horizontal reciprocating motion from the front wall toward the rear wall, An apparatus for removing fine suspended solids from wastewater containing impurities, wherein the raw material liquid flows down from the branch pipe to the filter and is supplied to separate the liquid into solids. 2. The apparatus for removing fine suspended solids from wastewater containing impurities according to claim 1, wherein the front end of the filter is supported on a eccentric shaft rotating at high speed and the rear end is elastically supported by a spring. . 2. The apparatus for removing fine suspended matters from wastewater containing impurities according to claim 1, wherein the raw material inflow pipe is joined to a branch pipe capable of horizontal reciprocating motion by a swivel joint.

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