JP2005125323A - Drain treatment apparatus for road cutter, its control method, and work vehicle for road cutter equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain treatment apparatus for a road cutter capable of easily being mounted on a vehicle or the like for road construction, having excellent maneuverability, convenience, and drain treatment capacity at various civil engineering construction sites or the like, and cleaning drain water after use at the construction site with the road cutter without contaminating the environment to reuse. <P>SOLUTION: The drain treatment apparatus for the road cutter is provided with a filtration vessel wherein a suspension drain water of the road cutter is supplied, a disc-like filter which is arranged in the filtration vessel, wherein a treatment water formed by supplying the suspension drain water from the outside surface thereof to be filtered is discharged from the back side of the inner part, and the entire of which is formed in a bag shape, a hollow rotary shaft tube inserted/fixed in/at the center of the filter, and through which the treatment water filtered by the filter is discharged, a drive part connected to the rotary shaft tube to rotate the rotary shaft tube and the filter, a suction pump connected to the rotary shaft tube, a peeling mechanism for peeling suspended substances deposited on the filter cloth surface of the filter, and a fresh water tank wherein the treatment water in the filtration vessel is stored. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  In addition to road surfaces such as asphalt roads and concrete roads, the present invention suspends cutting water discharged from road cutters when cutting or drilling concrete materials, asphalt materials, rocks, stones, etc. The present invention relates to a wastewater treatment apparatus for road cutter that can collect, purify, circulate, and reuse wastewater, a control method thereof, and a road cutter work vehicle equipped with the wastewater treatment apparatus.

Conventionally, suspended wastewater discharged from road cutters that cut road surfaces, bedrock, stones, etc., is discarded as it is, or stored in a storage tank and transported to a purification treatment plant or the like for purification.
In order to purify the suspended waste water, a purification process is performed in combination with a solid-liquid separation device or the like. For example, the following technologies are known for the purification process of the suspended waste water.
(Patent Document 1) states that “a storage tank for storing muddy water / muddy water, a flocculant charging means for adding a flocculant to the muddy water / muddy water, and a floc is generated by mixing the flocculant and the muddy water / muddy water. The turbid water / muddy water treatment apparatus provided with a mixing apparatus that performs the above and a filtration apparatus that separates the floc generated by the mixing apparatus from water is described.
(Patent Document 2) describes an electrode plate group in which anode electrode plates and cathode electrode plates respectively connected to an anode and a cathode of a DC power supply are alternately arranged along the direction of water flow in a flow passage section through which muddy water passes. The turbid water treatment apparatus formed by forming "."
JP 2002-219471 A JP-A-11-226577

However, the above conventional technique has the following problems.
(B) The turbid water / muddy water treatment apparatus having the flocculant charging means described in (Patent Document 1) adds flocculant such as aluminum sulfate to the suspended waste water to agglomerate fine particles to form a floc. It is said that the workability at the time of discharge is increased and this flocculant diffuses and easily pollutes the surrounding environment, and it is not effective for high concentration turbid water, and the cost of the medicine is lacking. There was a problem.
(B) The filtration device that separates floc and water consists of a porous material, and the solid content adheres to the surface of the mesh body with the treatment of turbid water, so the filtration efficiency of turbid water gradually decreases. As a result, there is a problem that a large amount of processing becomes difficult, maintenance is complicated, and workability is lacking.
(C) In the turbid water treatment apparatus that agglomerates particles using the electrode plate described in (Patent Document 2), the configuration for separating the solid content from the agglomerated treatment liquid is not presented. There is a problem that it is difficult to appropriately adjust the amount of water in conjunction with the filtration device and the workability of muddy water treatment is lacking.
(D) The ones described in (Patent Document 1) and (Patent Document 2) must be provided with a flocculant charging means, a power supply unit, etc., and the construction of the entire device has not been made compact. There has been a problem that it cannot be mounted on a vehicle for example to exhibit mobility.
(E) An apparatus configured by combining (Patent Document 1) and (Patent Document 2) has the above-mentioned problems, and in addition to purifying suspended drainage discharged from a road cutter, this is used as lubricating cooling water. Since there is no mechanism for circulating to the road cutter, there is a problem that it is difficult to apply to the road construction site.

  The present invention has been made to solve the above-mentioned problems, and can be easily mounted on a road construction vehicle or the like, has excellent mobility and convenience at various civil engineering construction sites, etc., and has excellent drainage treatment properties without polluting the environment. Providing wastewater treatment equipment for road cutters that can efficiently purify and reuse wastewater after use with road cutters at the construction site, and control wastewater treatment equipment for road cutters with excellent reliability that can maintain a certain filtration capacity The purpose of the present invention is to provide a road cutter work vehicle that can be constructed even on site without a method and water supply facility, has little waste, is highly convenient, and has excellent mobility and workability.

In order to solve the above-described problems, the road cutter wastewater treatment apparatus of the present invention has the following configuration.
The wastewater treatment apparatus for a road cutter according to claim 1 is a filtration tank to which suspended wastewater of a road cutter is supplied, and the suspension wastewater that is disposed in the filtration tank is supplied from the outer surface side and filtered. A disc-shaped filter in which the entire treated water is discharged from the inner back surface side, and a hollow rotating shaft through which the treated water that is inserted and fixed in the center of the filter and filtered by the filter is discharged. A tube, a drive unit connected to the rotating shaft tube and rotating the rotating shaft tube and the filter, a suction pump connected to the rotating shaft tube, and a suspended substance attached to the filter cloth surface of the filter It has the structure provided with the peeling mechanism which peels, and the fresh water tank in which the said treated water of the said filtration tank is stored.
This configuration has the following effects.
(1) Since the treated water filtered in the filtration tank can be directly stored in the fresh water tank, the energy associated with the transfer of the treated water is not required and the energy saving is excellent.
(2) Since the filter is formed in a disk shape and the suspended drainage flows from the outer surface side of the filter to the inner back surface side, the removal of solid content such as suspended solids adhering to the outer portion of the filter is performed by a peeling mechanism. It can be done easily.
(3) By having a peeling mechanism that peels off suspended substances attached to the filter cloth surface, it is easy to remove solids such as suspended substances attached to the filter and maintain the filtration conditions constant. As a result, the filtration efficiency can be improved, and a large amount of suspension wastewater from the road cutter can be treated.
(4) Since the filter is disc-shaped and can be filtered on both sides, the filtration surface is doubled and the filtration performance is excellent. Even when the space in the filtration tank is narrow, the filter surface is effectively used to efficiently suspend and drain water. Can be processed.
(5) By performing filtration with a disk-shaped filter, there is no eluate as in a conventional water treatment apparatus using a flocculant, so there is no risk of contaminating the environment with the purification treatment.
(6) Since the treated water stored in the fresh water tank can be repeatedly reused as lubrication cooling water for the road cutter, the cutting work by the road cutter can be continued without supplying water from the outside, and the workability is excellent. In particular, it is extremely useful and excellent in workability on a work site such as an expressway where there is no source of makeup water.
(7) Since a hollow rotating shaft tube for discharging treated water is inserted in a filter formed entirely sealed in a bag shape, the installation space of the filter and the filtration tank can be made compact, and the device Can be easily mounted on or moved to other construction vehicles.
(8) By having the suction pump connected to the rotating shaft tube, it is possible to perform filtration by sucking the suspended wastewater with the suction pump, so that it is possible to improve the processing capacity of the filtration, and the filter and filtration tank Can be made compact.
(9) A drive unit connected to a rotary shaft tube inserted and fixed at the center of a disk-shaped filter and rotating the rotary shaft tube and the filter, and a peeling mechanism for peeling suspended substances attached to the filter cloth surface of the filter By rotating the filter during the filtration process, suspended substances adhering to the surface of the filter cloth can be peeled off, and the filtration conditions can be easily maintained, thereby improving the filtration efficiency. Can be achieved.
(10) Since it has a fresh water tank, it can be moved to a construction site after storing tap water in advance and lubricated cooling water when cutting the road surface of an asphalt road with a cutter at a construction site without a water supply source Can be used as
(11) Suspended wastewater can be filtered only with a filter, and it is not necessary to use a chemical such as a flocculant, so it is environmentally friendly and excellent in low cost.

Here, in the filtration tank to which the suspended drainage is supplied, a bag-like filter made of a woven fabric or a non-woven fabric having a predetermined mesh interval, for example, a mesh interval of 0.001 to 1 mm is mutually spaced by a predetermined interval, for example, 10 to 10 mm. A large number are arranged in parallel at intervals of 200 mm, preferably 50 mm to 100 mm. As the interval between the filters becomes narrower than 50 mm, it tends to be difficult to dispose the peeling mechanism between the filters, and as the width becomes larger than 100 mm, the filtration tank becomes larger and the filtration efficiency tends to become worse and uneconomical. There is. In particular, when it becomes narrower than 10 mm or wider than 200 mm, these tendencies become remarkable, which is not preferable.
This bag-shaped filter is used as a core material such as a frame made of a vinyl chloride pipe or the like for holding an internal space of the filter inside, or a flat plate with a mesh-like sheet incorporated therein. A hollow rotating shaft tube communicating with the inside and outside of the filter is fixed and formed.
As a material of the filter cloth constituting this filter, a woven fabric or a nonwoven fabric made of synthetic fiber or natural fiber can be applied. Synthetic fibers that can be used generally include polyamides, polyesters, polyolefins, polyvinyl alcohols, polyacrylonitrile, vinyl acetate having a thickness of about 0.1 to 20 μm. In addition, the predetermined points at each intersection of the fibers are fixed by fusing by heating or adhering with an adhesive to reinforce the whole and capture it according to the size of the solid particles in the suspended drainage The rate may be adjusted.

The surface of the filter cloth may be covered with a scrum structure in which fine particles of synthetic resin such as silicone, urethane, tetrafluoroethylene, and acrylic are aggregated to form a channel between the particles. Thereby, the particles in the suspended drainage can be reliably captured at the surface portion formed by laying the fine particles of the synthetic resin, so that intrusion into the inside can be prevented, and clogging can be effectively prevented. In particular, when tetrafluoroethylene (trade name: Teflon (registered trademark)) is used, the adhesion to the solid content in the suspended waste water is small, and the anti-clogging property is excellent. In addition, the scrum structure forms a layer in which fine particles are joined in a network by spraying fine particles with a particle size of 0.001 mm to 2 mm of a synthetic resin dispersed in a solvent such as polyurethane resin onto a filter cloth. Or by mixing and stirring fine particles into a fibrous material and partially fusing the fibrous or fine particles.
Further, instead of the filter cloth, porous compression molded plastic, porous ceramic, or the like can be used. This makes it difficult for the suspended solids to adhere to the surface, facilitates removal of the suspended suspended matter and is excellent in maintainability, and makes it difficult for wear due to the peeling mechanism to occur, resulting in excellent long life.

If the filter has a disk-shaped filtration base and a mesh body disposed on both sides of the filtration base, the flexible filter can be used even if the flow rate or throughput of the surrounding suspended wastewater changes. The shape of the space inside the filter can be maintained without reducing the water intake efficiency even if solids etc. in the suspended drainage adhere to the surface of the filter cloth by keeping the cloth in the specified shape and keeping the treatment conditions constant. Can be maintained, and a decrease in filtration efficiency can be suppressed.
The disc-shaped filter substrate is formed of a synthetic resin such as expanded polystyrene (trade name: Styrofoam (registered trademark)) or vinyl chloride, a metal such as stainless steel, or the like.
The disk-shaped filtration base material has rigidity, so that it can function as a core material for maintaining a flexible filter cloth in a predetermined shape, and also as a mounting part to a rotary shaft tube, It is excellent in handling when attaching and replacing the body and filter cloth, and can be manufactured easily and inexpensively by sewing or bonding the periphery of the filter cloth, and is excellent in economic efficiency.
When the mesh body has a three-dimensional network structure or a hollow structure, the drainage of treated water after filtration is excellent without interfering with the flow of treated water in the filter. As the net-like body, a plastic net or the like is preferably used. As a result, it is lightweight and excellent in productivity, and rust is not generated, so it has a long life and excellent maintainability.

By providing a water intake hole that communicates with the space formed by the mesh body in the rotating shaft tube, it is possible to obtain treated water that is uniformly and uniformly purified from the inside of the filter cloth formed in a disk shape, and conversely, compressed air In addition, by flowing water or purified water back through the water holes (back washing), clogging due to adhesion of minute solids to the filter cloth can be prevented, and filtration of suspended wastewater can be performed efficiently.
The water intake holes drilled in the rotary shaft tube have a hole diameter of about 1 to 10 mm, and are arranged in large numbers at predetermined locations in communication with the hollow portion of the rotary shaft tube, and evenly from the space formed by the mesh body. It arrange | positions so that treated water can be extracted.
As the diameter of the water intake hole becomes smaller than 1 mm, the flow rate of treated water that can be sucked by the suction pump becomes insufficient, which is not preferable. The treatment amount increases as the hole diameter increases, but the strength tends to decrease as the hole diameter becomes larger than 10 mm.
The rotary shaft tube is disposed so as to penetrate through the centers of the plurality of filters, and has a function of collectively discharging the treated water taken into the hollow portion through a water intake hole communicating with the inside of each filter.

The filtration tank and the fresh water tank are box-shaped containers formed of a material such as plastic such as FRP or metal such as stainless steel. The framework and bottom plate portion of the apparatus are also formed of a material such as plastic such as FRP or metal such as stainless steel, but it is preferable that the bottom plate portion particularly requiring strength is made of metal.
At the bottom of the filtration tank, a solid content reservoir having a solid content discharger for discharging concentrated turbid water and sludge is formed. As a result, the concentrated turbid water and sludge can be taken out from the solid content reservoir after the work is finished, and can be discarded and variously processed. Suspended wastewater is collected through a pump or the like mounted on a construction vehicle and supplied from an opening or the like above the filtration tank. The suspension wastewater supply part has a net-like cage body, filter, etc. When the is disposed, it is possible to capture in advance large dust, suspended particles with large particles, etc., prevent clogging of the solid content discharge portion, etc., and is excellent in maintainability.
The filtration tank is connected to a suction pump, and a drain pipe for discharging the filtered treated water is disposed. A supply pipe for supplying the treated water to the fresh water tank is disposed between the suction pump and the fresh water tank. Moreover, the treated water discharge part which discharges treated water is formed in the lower part of a fresh water tank. As a result, the treated water can be stored in the fresh water tank, and the stored treated water can be discharged to the outside as needed, and can be used as lubrication cooling water for road cutters or discarded when not needed. The drain pipe and the supply pipe preferably have flexibility and alkali resistance. Thereby, damage, such as a rupture in a cold district, can be prevented.

When baffles are installed in the vertical or horizontal direction in the fresh water tank, it is possible to prevent the treated water stored in the fresh water tank from vibrating when the equipment is mounted and moved on the loading platform of a construction vehicle or the like. The treated water can be prevented from splashing or spilling on the road.
You may provide an overflow drain pipe and a water level sensor in a filtration tank and a fresh water tank. Thereby, it is possible to prevent the suspension drain supplied to the filtration tank or the treated water stored in the fresh water tank from overflowing to the outside. In addition, by providing a cover at the opening of the filtration tank and fresh water tank, the inside of the filtration tank and fresh water tank can be protected, and suspension drainage and treated water can be prevented from spilling during the movement of the device, and also necessary for work. A tool or the like can be placed on the cover and transported, and the functionality is excellent.
When a suspension hole is formed in the upper part of the filtration tank and the fresh water tank, the apparatus can be easily lifted with a wire or the like, and the workability of loading and unloading on a construction vehicle is excellent. In addition, since a filtration tank and a fresh water tank are not integrated, the existing fresh water tank can be utilized.
For the peeling mechanism, a brush, a plate-shaped scraper or the like can be used.
The road cutter is a general term for not only roads, but also those used for cutting asphalt boards, concrete boards, concrete materials, bedrock, stones, and the like.

Invention of Claim 2 is the waste-water-treatment apparatus for road cutters of Claim 1, Comprising: The said filtration tank and the said fresh water tank are provided continuously through the one side wall of the said filtration tank or the said fresh water tank. It has the composition which is.
(1) Since the filtration tank and the fresh water tank are connected continuously with sharing the side wall, the whole can be made compact, and the apparatus can be easily moved by mounting the apparatus on the loading platform of a construction vehicle or the like. It is possible to easily treat suspended water such as cutting water generated by cutting or drilling of rocks, stones, etc., and recycled water when cutting the road surface of asphalt roads during road construction. it can.
Here, when the legs are provided in the filtration tank and / or fresh water tank, the apparatus can be stably mounted on the loading platform of a construction vehicle, etc., and can be installed independently on the construction site, practicality, Excellent versatility.

Invention of Claim 3 is the waste-water-treatment apparatus for road cutters of Claim 1 or 2, Comprising: Suspended substance which sprayed the liquid or the bubble in the said filtration tank, and was collected at the bottom part of the said filtration tank It has the structure provided with the ejection nozzle which fluidizes the lump.
With this configuration, in addition to the operation of the first or second aspect, the following operation is provided.
(1) By having an ejection nozzle that ejects liquid or bubbles in the filtration tank, it is possible to loosen the mass of suspended matter accumulated at the bottom of the filtration tank, mix it with water, and fluidize it. It is possible to prevent clogging of the solid content discharge section and the like formed at the bottom, and it is possible to quickly discharge concentrated turbid water and sludge for disposal and various treatments.
Here, the ejection nozzle is disposed so as to extend near the bottom of the filtration tank, and ejects liquid or bubbles compressed in the vertical direction or the like with respect to the bottom of the filtration tank. Thereby, the lump of suspended solids collected at the bottom of the filtration tank can be loosened and fluidized. The hole diameter of the ejection nozzle is preferably 1 mm to 20 mm. As the hole diameter becomes thinner than 1 mm, the flow rate of the injected liquid and bubbles becomes insufficient, and as the hole diameter becomes thicker than 20 mm, the flow rate of the injected liquid and bubbles becomes insufficient and both can sufficiently loosen the lump. Not preferable. When the ejection nozzle is movable up and down, it can be moved to the vicinity of the bottom of the filtration tank, and the lump of suspended solids can be more reliably loosened, mixed with water and fluidized, and has excellent functionality.

A fourth aspect of the present invention is the road cutter wastewater treatment apparatus according to any one of the first to third aspects, wherein the peeling mechanism has a brush tip applied to the outer surface of the filter. It has a configuration including a brush portion disposed in contact with the brush portion and a brush fixing portion that rotates the brush portion and supports the brush portion at an arbitrary angle.
With this configuration, in addition to the operation of any one of claims 1 to 3, the following operation is provided.
(1) Since the peeling mechanism has a brush portion that is arranged in contact with the outer surface of the filter, the brush tip contacts the filter cloth surface of the filter by the brush portion only by rotating the filter by the driving portion. The attached suspended solids can be peeled off, so that the filter surface can be cleaned even during the filtration process to keep the filtration performance constant, and the filtration process can be performed without using a chemical such as a flocculant. it can.
(2) Since the peeling mechanism includes a brush fixing portion that supports the brush portion in a rotatable manner, the brush portion can be easily rotated and cleaned when the filtration process is suspended, and the amount of overlap with the filter or The angle can be adjusted and the maintenance is excellent.
(3) Since the brush fixing part supports the brush part so as to be rotatable, the mounting angle of the brush part can be arbitrarily set according to the water level of the suspended drainage in the filtration tank. The most suitable angle can be selected to attach the brush part, and the filtration efficiency can be increased.

Here, the brush portion is formed in an elongated flat plate shape, and fibers such as nylon and Tetron whose hair tips are opposed to the filter external surface (filter cloth surface) on one or both sides of the flat plate shape. The brush part may be held on the brush fixing part via an elastic member such as a spring. Thereby, it can arrange | position so that predetermined | prescribed pressing force may be loaded on a filter surface from a hair tip. In addition, by fixing the edge part of a brush part with a screw fixing part etc. by screwing etc., only a brush part can be replaced | exchanged easily, adjustment of the overlap amount with a filter, a contact angle, etc. can be performed.
The brush fixing portion is formed in a substantially U shape or the like, and a plurality of brush portions are arranged in parallel according to the filter interval. A shaft support is formed at both ends of the brush fixing part, and the shaft is pivotable to a brush rotating part formed on a side wall of the filter tank or a frame or the like set in the filter tank together with a filter or a rotary shaft tube of the filter. Be supported. In particular, when the brush fixing portion is disposed on the frame, the peeling mechanism can be handled integrally with the frame and can be easily taken out of the filtration tank, so that the workability during maintenance is excellent.

  A plurality of positioning holes are drilled on the outer circumference of either the shaft support part or the brush rotating part of the brush fixing part, and a fixing hole is drilled on the other, and the selected positioning hole is aligned with the position of the fixing hole. By fitting or screwing, the brush fixing portion can be fixed at a desired angle. The brush fixing part is fixed to the frame or the like by pin fitting, screwing, or using a sliding or rotating engaging member on the distal end side of the brush part away from the shaft support part (filter rotating shaft tube). May be. When the brush fixing portion is fixed at both ends of the shaft support portion and the brush portion, the brush fixing portion can be reliably and firmly fixed and excellent in reliability. At the time of maintenance of the brush part, the work is performed by rotating the brush fixing part so that the longitudinal direction of the brush part is substantially vertical. Thereby, a brush part can be attached or detached easily and workability | operativity can be improved. By attaching and detaching the brush portion after fixing the brush fixing portion to the frame or the like using a fixing means such as a chain or a hook, the brush fixing portion does not rotate during work, and the workability is excellent. .

Invention of Claim 5 is a waste-water-treatment apparatus for road cutters of Claim 4, Comprising: It has the structure by which the said brush part is arrange | positioned so as to be orthogonal to the rotation direction of the said filter. ing.
With this configuration, in addition to the operation of the fourth aspect, the following operation is provided.
(1) Since the brush portion is arranged so as to be orthogonal to the rotation direction of the filter, the entire brush portion can be always brought into contact with the circular filter in a stable state, and the filter cloth surface of the filter It is possible to evenly scrape suspended substances adhering to the surface.
Here, the brush fixing portion of the peeling mechanism may be disposed on the same axis as the rotary shaft tube of the filter. Thereby, alignment with a brush part and a filter can be performed easily.

Invention of Claim 6 is the waste-water-treatment apparatus for road cutters of any one of Claim 1 thru | or 5, Comprising: The said filter, the said rotating shaft tube, the said drive part, and the said peeling And a mechanism that includes a frame that detachably holds the filtration unit having the mechanism with respect to the filtration tank.
With this configuration, in addition to the operation of any one of claims 1 to 5, the following operation is provided.
(1) Equipped with a frame that removably holds a filter having a filter, a rotating shaft tube, a drive unit, and a peeling mechanism with respect to the filter tank, so that the filter can be handled integrally with the frame and easily It is possible to perform maintenance such as cleaning and replacement of the filter by taking it out from the filtration tank.

Here, a support plate for supporting the frame is disposed at the bottom of the filtration tank, or legs are formed on the frame. In addition, by arrange | positioning a some support plate to the perpendicular direction of a filtration tank, it can be made to function also as a baffle plate, and the wave of suspension waste_water | drain of a filtration tank can be reduced. Moreover, by connecting between a rotating shaft tube and the drainage pipe which discharges | filters the treated water by a coupling etc., it can attach or detach easily and can take out a flame | frame from a filtration tank. In particular, by providing a long flexible drainage pipe that is flexible, the drainage pipe can be pulled out of the filtration tank along with the frame and easily attached to and detached from the rotary shaft pipe. Excellent.
In addition, when the rotary shaft tube and the sprocket shaft that transmits the power from the drive unit to rotate the rotary shaft tube are made detachable, the rotary shaft tube and the sprocket shaft can be easily separated. Since the filter can be pulled out from the end of the tube, the filter can be easily attached and detached, and the maintainability can be improved.

A seventh aspect of the present invention is the wastewater treatment apparatus for road cutters according to any one of the first to sixth aspects, wherein the alkaline suspension is provided inside the filtration tank and / or the fresh water tank. It has a configuration equipped with neutralizing means for neutralizing muddy wastewater.
With this configuration, in addition to the operation of any one of claims 1 to 6, the following operation is provided.
(1) Since the neutralization means for neutralizing the alkaline suspension wastewater is provided inside the filtration tank and / or the fresh water tank, it is possible to prevent the drainage destination of the treated water after filtration from being alkalized by alkali ions.
(2) Since neutralization means for neutralizing alkaline suspended wastewater is provided, it is possible to prevent alkali accumulation of organisms such as rivers due to alkali ions.
Here, as a neutralization means, what adds neutralizers, such as dilute hydrochloric acid and acetic acid, and what blows carbon dioxide etc. in the suspension drainage in a filtration tank, and / or the treated water in a fresh water tank are mentioned. .

Invention of Claim 8 is the waste water treatment equipment for road cutters of Claim 7, Comprising: The said neutralization means is (a) a diffuser pipe, and the carbon dioxide supply which supplies a carbon dioxide gas to the said diffuser pipe Or (b) a fine bubble mixed solution ejector, and a pump that supplies a mixed fluid of carbon dioxide and water to the fine bubble mixed solution ejector. .
With this configuration, in addition to the operation of the seventh aspect, the following operation is provided.
(1) By having an air diffuser as a neutralization means, carbon dioxide gas can be blown into the suspended waste water to neutralize alkali components such as calcium hydroxide and to neutralize the treated water.
(2) As a neutralization means, it has a pump for supplying a mixed fluid of carbon dioxide gas, air and water to the fine bubble mixed liquid ejector, thereby neutralizing the alkali content and increasing the amount of dissolved oxygen. Can do.

Invention of Claim 9 is the wastewater treatment apparatus for road cutters of any one of Claims 1 thru | or 8, Comprising: The said filter is a disk-shaped filtration base material used as a core, And a convex or concave guide portion formed in a spiral shape or a radial shape from the peripheral portion of the filtration base toward the rotary shaft tube.
With this configuration, in addition to the operation of any one of claims 1 to 8, the following operation is provided.
(1) The filter has a disk-shaped filtration base material as a core material, and a convex or concave guide portion formed in a spiral shape or a radial shape from the periphery of the filtration base material toward the rotary shaft tube. Rotating the filter allows the treated water to be collected in the lower part of the filter like a water wheel to be pumped up toward the rotating shaft tube, so that the treated water can be discharged even if the water level inside the filter falls below the rotating shaft tube. It becomes easy to discharge, and the filtration processing capacity can be improved by effectively utilizing the entire area of the filter.
Here, the water intake hole of the rotating shaft tube is formed between the guide part and the guide part when the guide part is a ridge, and is formed on the extension line of the guide part when the guide part is a ridge. . Thereby, the treated water which flows along a guide part can be discharged | emitted more reliably. In addition, when the spiral or radial guide portion is formed using a bone-shaped frame instead of the disk-shaped filtration base material as the core material, the front and back of the filter communicate with each other and water can be collected from both sides. Even if one surface is clogged, it can be filtered and has excellent reliability.

A tenth aspect of the present invention is the wastewater treatment apparatus for a road cutter according to any one of the first to ninth aspects, wherein the apparatus is disposed between the adjacent filters, and the end surface of each of the filters is provided. It has the structure provided with the filter protective material contact | abutted on the surface.
With this configuration, in addition to the operation of any one of claims 1 to 9, the following operation is provided.
(1) Since there is a filter protection material such as a long plate that is disposed between adjacent filters and is in contact with the surface of each filter at the end face, the filter interval is set when transporting the wastewater treatment device for road cutters. It can be maintained and the vibration of the filter can be reduced, and the filter can be prevented from being broken or displaced.
(2) Since the end face of the filter protective material is disposed in contact with the surface of each filter, the suspended matter adhering to the filter cloth surface of the filter is supplemented by the filter protective material when the filter rotates. It can peel and can prevent the fall of filtration processing capacity.

Here, as the filter protective material, in addition to a long plate-shaped material, a wire material such as a wire, a brush, or the like can be used. One filter protective material may be in contact with the adjacent left and right filter surfaces simultaneously, or two filter protective materials may be in contact with the left and right filter surfaces independently.
Each of the plurality of filter protective materials is directly fixed to the frame, or a protective material fixing frame to which the plurality of filter protective materials are fixed is fixed to the frame. When a plurality of filter protection materials are fixed to the protection material fixing frame, the plurality of filter protection materials can be handled integrally by the protection material fixing frame, and can be easily attached to and detached from the frame. Excellent disassembly workability. For fixing the filter protective material or the protective material fixing frame to the frame, it is preferable to use fixing means such as detachable screws. Moreover, it is preferable that the fixing hole for screwing the filter protective material to the frame or the protective material fixing frame is formed in a horizontally long long hole shape at the upper end portion or the lower end portion of the filter protective material. Thereby, the attachment / detachment work of the filter protective material and the position adjustment in the left-right direction can be easily performed, and the maintenance performance and the assembly workability are excellent.
In addition, the lower end portion of the filter protective material is formed in a substantially L shape, or the protective material fixing frame disposed on the lower end side of the filter protective material is formed in a substantially L shape, and the horizontal portion is erected on the frame. It is preferable to drill an insertion hole through which the fixed shaft is inserted. Thereby, while being able to position a filter protective material easily with respect to a flame | frame, the shake of a filter protective material can be prevented and fixed.

The method for controlling a wastewater treatment device for a road cutter according to claim 11 is characterized in that the suction pump is used when the suspended matter is separated by the separation mechanism of the wastewater treatment device for a road cutter according to any one of claims 1 to 10. The suction is stopped, and the filter is rotated in the reverse direction, or the reciprocating rotational motion is repeated in which the forward rotation and the reverse rotation are alternately repeated.
This configuration has the following effects.
(1) By stopping the suction of the suction pump when the suspended substance is peeled off by the peeling mechanism, the suction force acting on the suspended substance attached to the filter cloth surface of the filter disappears and the filter cloth that has been dented by the suction is restored. Since the contact area with the peeling mechanism increases, the suspended substance can be easily peeled off by the peeling mechanism, and the filtration conditions can be kept constant.
(2) Suspended substances attached to the surface of the filter cloth are scraped off and peeled off by rotating the filter reversely when suction is stopped by the suction pump, or by reciprocating rotational movement that repeats forward rotation and reverse rotation alternately. It becomes easy and can improve the filtration efficiency.
Here, when the filter is rotated at a higher speed than the rotation speed during filtration when the suspended substance is peeled off, the suspended substance attached to the filter cloth surface is more easily peeled off, and the maintenance is excellent. A motor that can arbitrarily control the rotation direction and the rotation speed is used for the drive unit that rotates the filter. The drive unit transmits the power of the drive unit to the rotary shaft tube by a drive transmission unit such as a belt or a chain, and rotates the filter together with the rotary shaft tube.

The work vehicle for a road cutter according to claim 12, wherein a suspension cutter that collects suspended wastewater discharged from the road cutter and a road cutter that cuts asphalt or a concrete road surface while supplying lubricating cooling water to a rotary blade. A wastewater collection part, the wastewater treatment apparatus for road cutters according to any one of claims 1 to 10, and treated water stored in the fresh water tank of the wastewater treatment apparatus for road cutters is sent to the road cutter. And a lubrication cooling water supply pipe provided with a pump.
This configuration has the following effects.
(1) Since the wastewater treatment apparatus for road cutters having a filtration tank and a fresh water tank is mounted on a vehicle for construction or the like, it can be easily moved and has excellent mobility.
(2) Since it has a wastewater treatment device for road cutters, it can treat suspended wastewater generated when cutting road surfaces of asphalt and concrete roads with road blades without any external discharge. Are better.
(3) Because the road cutter wastewater treatment device is installed in the vehicle, the road cutter wastewater treatment device can be operated with the power supply of the vehicle instead of an external power supply. Excellent in workability, workability and quietness.
(4) a suspension drainage recovery unit for recovering suspension drainage discharged from the road cutter, a lubricating cooling water supply pipe for feeding treated water stored in a fresh water tank of a road cutter wastewater treatment device to the road cutter, In addition to purifying suspended wastewater collected from road cutters, the treated water after filtration can be circulated through the road cutter as lubrication cooling water and reused repeatedly, allowing construction even at construction sites without a water supply source. it can.
(5) Equipped with a wastewater treatment device for road cutters, purifies suspended wastewater collected from road cutters, circulates the treated water after filtration as lubricating cooling water for road cutters, and repeatedly uses it, after the work is finished As a result, the amount of suspended wastewater can be significantly reduced compared to the conventional case, and the load on the disposal site can be reduced.

According to invention of Claim 1, it has the following effects.
(1) By having a peeling mechanism that peels off suspended substances attached to the filter cloth surface, it is possible to easily remove solids such as suspended substances attached to the filter and maintain the filtration conditions constant, Since there is no need to use a chemical such as a flocculant, it is possible to provide a wastewater treatment apparatus for road cutters that is environmentally friendly and excellent in filtration efficiency.
(2) To provide a wastewater treatment device for road cutters that has excellent environmental resistance without fear of polluting the environment due to purification treatment because there is no eluate as in a conventional water treatment device using a flocculant. it can.
(3) Since the treated water stored in the fresh water tank can be reused as lubrication cooling water for road cutters repeatedly, cutting work by road cutters can be continued without replenishing water from the outside, and workability is excellent. In particular, it is possible to provide a wastewater treatment apparatus for road cutters that is extremely useful and excellent in workability on a work site such as an expressway without a supply of makeup water.
(4) Since a hollow rotating shaft tube that discharges treated water is inserted into a filter that is hermetically sealed in a bag shape, the installation space for the filter and the filtration tank can be made compact, saving space. It is possible to provide a wastewater treatment apparatus for road cutters that is excellent in performance.
(5) By having a suction pump connected to the rotary shaft tube, it is possible to perform filtration by sucking suspended wastewater with the suction pump, so that the processing capacity of filtration can be improved, and workability is excellent. It is possible to provide an economical wastewater treatment apparatus for road cutters that can make a filter and a filtration tank compact.
(6) A drive unit connected to a rotary shaft tube inserted and fixed at the center of a disk-shaped filter and rotating the rotary shaft tube and the filter, and a peeling mechanism for peeling suspended substances adhering to the filter cloth surface of the filter By rotating the filter during the filtration process, suspended substances adhering to the filter cloth surface can be easily peeled off, providing excellent maintainability and maintaining the filtration conditions constant. It is possible to provide a wastewater treatment apparatus for road cutters that is excellent in economy and excellent in economic efficiency that can improve filtration efficiency.

According to invention of Claim 2, in addition to the effect of Claim 1, it has the following effects.
(1) It is possible to provide a wastewater treatment apparatus for road cutters that is compact and does not take a mounting place, and can be mounted on a loading platform such as a construction vehicle.

According to invention of Claim 3, in addition to the effect of Claim 1 or 2, it has the following effects.
(1) By having an ejection nozzle that ejects liquid or bubbles in the filtration tank, it is possible to loosen the mass of suspended matter accumulated at the bottom of the filtration tank, mix it with water, and fluidize it. Road cutter drainage with excellent workability that can prevent clogging of the solid content discharge part formed at the bottom, has excellent maintainability, and can quickly discharge concentrated muddy water and sludge for disposal and various treatments A processing device can be provided.

According to invention of Claim 4, in addition to the effect of Claims 1 thru | or 3, it has the following effects.
(1) Since the peeling mechanism has a brush portion that is arranged in contact with the outer surface of the filter, the brush tip contacts the filter cloth surface of the filter by the brush portion only by rotating the filter by the driving portion. The attached suspended solids can be peeled off, and it has excellent functionality, and even during filtration, the filter surface can be cleaned to maintain the filtration performance constant, and filtration can be performed without using agents such as flocculants. A highly reliable wastewater treatment apparatus for a road cutter that can be provided can be provided.
(2) Since the peeling mechanism includes a brush fixing portion that supports the brush portion in a rotatable manner, the brush portion can be easily rotated and cleaned when the filtration process is suspended, and the amount of overlap with the filter or It is possible to provide a road cutter wastewater treatment apparatus with excellent maintainability that can adjust the angle and the like.
(3) Since the brush fixing part supports the brush part so as to be rotatable, it is excellent in versatility that can arbitrarily set the mounting angle of the brush part according to the water level of the suspended drainage in the filtration tank, and peels off suspended substances. Therefore, it is possible to provide a road cutter wastewater treatment device that is excellent in workability and can be attached with a brush portion by selecting an optimum angle to increase the filtration efficiency.
(4) Since the high-concentration sludge peeled off by the brush accumulates at the bottom of the water tank and is compressed by direct contact with the mud particles, a large volume of sludge can be stored in a concentrated state even in a small-volume water tank compared to the coagulation method. It is possible to provide a wastewater treatment apparatus for road cutters that is excellent in workability.

According to invention of Claim 5, in addition to the effect of Claim 4, it has the following effects.
(1) Since the brush part is arranged so as to be orthogonal to the rotation direction of the filter, the entire brush part can be always brought into contact with the circular filter in a stable state and has excellent operational stability. It is possible to provide a highly reliable wastewater treatment apparatus for road cutters that can evenly scrape suspended substances adhering to the filter cloth surface of the filter.

According to invention of Claim 6, in addition to the effect of any one of Claims 1 thru | or 5, it has the following effects.
(1) Equipped with a frame that removably holds a filter having a filter, a rotating shaft tube, a drive unit, and a peeling mechanism with respect to the filter tank, so that the filter can be handled integrally with the frame and easily It is possible to provide a road cutter wastewater treatment apparatus with excellent maintainability that can be removed from the filtration tank and cleaned or replaced with a filter.

According to invention of Claim 7, in addition to the effect of any one of Claims 1 thru | or 6, it has the following effects.
(1) Since it has a neutralizing means for neutralizing alkaline suspended waste water inside the filtration tank and / or fresh water tank, it is possible to make the treated water after filtration safe water that does not adversely affect the environment. A wastewater treatment apparatus for road cutters excellent in environmental protection can be provided.

According to invention of Claim 8, in addition to the effect of Claim 7, it has the following effects.
(1) A wastewater treatment device for road cutters that has an air diffuser as a neutralization means and blows carbon dioxide and neutralizes and discharges highly alkaline cut wastewater, which is excellent in environmental protection after disposal. Can be provided.
(2) As a neutralization means, by having a pump that supplies carbon dioxide gas or a mixed gas of air and water to the fine bubble mixed liquid ejector, treated water that can easily neutralize alkali and increase the dissolved oxygen concentration It is possible to provide a road cutter wastewater treatment apparatus with excellent functionality that can be discharged.

According to invention of Claim 9, in addition to the effect of any one of Claims 1 thru | or 8, it has the following effects.
(1) The filter has a disk-shaped filtration base material as a core material, and a convex or concave guide portion formed in a spiral shape or a radial shape from the periphery of the filtration base material toward the rotary shaft tube. Rotating the filter allows the treated water to be collected in the lower part of the filter like a water wheel to be pumped up toward the rotating shaft tube, so that filtered water can be discharged even if the water level inside the filter falls below the rotating shaft tube. It becomes easy to discharge, and it is possible to provide a wastewater treatment apparatus for road cutters that has an excellent filtration capacity and can effectively use the entire area of the filter.

According to the invention described in claim 10, in addition to the effect of any one of claims 1 to 9, the following effect is obtained.
(1) By causing the end face of a filter protection material such as a long plate disposed between adjacent filters to abut the surface of each filter, the vibration of the filter that occurs during transportation can be reduced. In addition, it is possible to provide a wastewater treatment apparatus for road cutters that is excellent in reliability and durability that can prevent breakage and displacement of the filter.
(2) Since the end face of the filter protective material is disposed in contact with the surface of each filter, suspended substances adhering to the filter cloth surface of the filter during filtration can be peeled off with the filter protective material. In addition, it is possible to provide a wastewater treatment apparatus for road cutters that is excellent in reliability and practicality capable of preventing a reduction in filtration treatment capacity.

According to the eleventh aspect of the present invention, the following effects can be obtained.
(1) By stopping the suction of the suction pump when the suspended substance is peeled off by the peeling mechanism, the suction force acting on the suspended substance attached to the filter cloth surface of the filter disappears and the filter cloth that has been dented by the suction is restored. Since the contact area with the peeling mechanism increases, the suspended material can be easily peeled off by the peeling mechanism, and it has excellent maintainability and can maintain the filtration conditions constant. A waste water treatment apparatus can be provided.
(2) When the suction pump stops suction, the suspended matter attached to the surface of the filter cloth is easily peeled off by rotating the filter in reverse or by reciprocating rotational movement that repeats forward and reverse rotation alternately. It is possible to provide a road cutter wastewater treatment apparatus with excellent functionality capable of improving efficiency.

According to invention of Claim 12, it has the following effects.
(1) Since the road cutter wastewater treatment device having a filtration tank and a fresh water tank is mounted on a vehicle for construction or the like, the road cutter is excellent in mobility because it can be made compact as a whole and easily moved. An industrial wastewater treatment apparatus can be provided.
(2) Since it has a wastewater treatment device for road cutters, it is excellent in environmental protection that can treat suspended wastewater generated when cutting road surfaces of asphalt and concrete roads with road blades without being discharged to the outside. A wastewater treatment device for a road cutter can be provided.
(3) Because the road cutter wastewater treatment device is installed in the vehicle, the road cutter wastewater treatment device can be operated with the power supply of the vehicle instead of an external power supply. It is possible to provide a wastewater treatment apparatus for road cutters that is excellent in performance, workability, and quietness.
(4) a suspension drainage recovery unit for recovering suspension drainage discharged from the road cutter, a lubricating cooling water supply pipe for feeding treated water stored in a fresh water tank of a road cutter wastewater treatment device to the road cutter, In addition to being able to purify suspended wastewater collected from road cutters, it is excellent in environmental protection, and it is possible to circulate treated water after filtration as lubricating cooling water to road cutters and reuse it repeatedly, and it is excellent in resource saving Therefore, it is possible to provide a wastewater treatment device for road cutters that can be constructed even on a construction site without a water supply source and has excellent versatility.
(5) Equipped with a wastewater treatment device for road cutters, purifies suspended wastewater collected from road cutters, circulates the treated water after filtration as lubricating cooling water for road cutters, and repeatedly uses it, after the work is finished It is possible to provide a wastewater treatment device for road cutters that can significantly reduce the amount of suspended wastewater compared to the past, has excellent environmental protection, can reduce the load on the disposal site, and has excellent workability and energy saving. it can.

Hereinafter, a road cutter wastewater treatment apparatus according to an embodiment of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 is an explanatory diagram of a construction site to which a road cutter wastewater treatment apparatus according to Embodiment 1 is applied.
In FIG. 1, 10 is a road cutter work vehicle, 11 is a road cutter wastewater treatment device according to the first embodiment mounted on a vehicle 10a of the road cutter work vehicle 10, and 12 is a rotary blade 12a on asphalt or concrete. A road cutter 13 that presses and cuts the road surface, and 13 is a suspension drainage that constitutes a suspension drainage collection unit for sucking and collecting the suspension drainage discharged from the road cutter 12 and supplying it to the wastewater treatment device 11 for the road cutter. A recovery pipe 14 is a lubrication cooling water supply pipe that supplies treated water purified by the road cutter wastewater treatment apparatus 11 to the road cutter 12 as lubrication cooling water.

FIG. 2 is an overall perspective view of the road cutter wastewater treatment apparatus in the first embodiment, and FIG. 3 is a plan view of the road cutter wastewater treatment apparatus in the first embodiment.
2 and 3, 11 is a road cutter wastewater treatment apparatus in which a filtration tank 15 and a fresh water tank 16 are formed in a box shape with plastics such as FRP and metals such as stainless steel, and 11a is a filtration tank 15. The suspended drainage pipe 11b is connected to the bottom of the filtration tank 15 and purified by the filtration tank 15. The suspended drainage pipe 11b is connected to the bottom of the filtration tank 15. A drain pipe 11c is connected to the suction pump 17 and the fresh water tank 16 to supply the treated water discharged from the filtration tank 15 to the fresh water tank 16. A supply pipe 11d is disposed at the bottom of the fresh water tank 16 and is a treated water discharge pipe connected to a lubricating cooling water supply pipe 14 for supplying treated water stored in the fresh water tank 16 to the road cutter 12 as lubricating cooling water, 1e is a treated water discharge valve provided in the treated water discharge pipe 11d, 11f is a leg portion which is disposed below the filtration tank 15 and the fresh water tank 16 and makes the road cutter drainage treatment apparatus 11 self-supporting, and 15a is a filtration tank 15 A solid content storage part in which a solid content such as turbid water and sludge formed and concentrated at the bottom is precipitated and stored; 15b is a solid content discharge pipe for discharging the solid content stored in the solid content storage part 15a; 15c is a solid content discharge valve provided in the solid content discharge pipe 15b, and 15d is disposed below the opening in the filtration tank 15 of the suspension drainage supply pipe 11a and has large dust and particles in the suspension drainage. A net-like cage body that traps suspended substances and the like, 15e is an overflow drain pipe that is disposed in the upper part of the filtration tank 15 and discharges suspended waste water that exceeds its processing capacity, and 20 is formed in a rectangular parallelepiped frame. Fixed to the frame 20a A filtration unit detachably set in the filtration tank 15, a rotary shaft tube 21 rotatably supported on a frame 20 a of the filtration unit 20, and a plurality 22 having a rotation shaft tube 21 inserted and fixed at the center. The disk-shaped filter 23 is fixed to the frame 20 a and is a drive unit such as a motor that can control the rotational speed and direction of the rotary shaft tube 21 and the filter 22. 23 a is between the drive unit 23 and the rotary shaft tube 21. A drive transmission unit such as a belt or a chain that is engaged and transmits the rotation of the drive unit 23 to the rotary shaft tube 21, and a brush unit 24a is detachably fixed to the frame 20a by screws or the like, and is a fiber such as nylon or tetron. The peeling mechanism 25 is disposed in the horizontal direction so that the hair tips 24b on which the hairs are planted are in contact with the surface of the filter 22, and 25 is disposed on the frame 20a so as to be movable up and down. A plurality of jet nozzles 26a, which are jetted from the lower end opening and fluidize the solid matter settled in the solid content reservoir 15a, are arranged inside the side wall of the fresh water tank 16 in parallel and perpendicular to the bottom surface, and are stored in the fresh water tank 16. A baffle plate for preventing the rippling of the treated water, 26c is a top plate portion disposed at the upper part of the fresh water tank 16 and formed with an opening 26e, and 26d is disposed at the top plate portion 26c and is initially lubricated and cooled on the road cutter 12. A water supply pipe 27 for supplying tap water or the like supplied as water is disposed outside the filtration tank 15 and the fresh water tank 16 and is connected to a diffuser pipe 28 disposed in the filtration tank 15 and the fresh water tank 16. Carbon dioxide gas cylinders 29 for supplying carbon dioxide gas through 27 a are suspension holes formed in the outer periphery of the upper ends of the filtration tank 15 and the fresh water tank 16.

The solid content reservoir 15a of the filtration tank 15 is formed by inclining both sides in a V shape at an angle of about 5 to 45 degrees with respect to the horizontal plane, and is continuously provided at the lowermost part of the inclined portion to provide a solid content discharge valve. A solid content discharge pipe 15b having 15c was arranged. By opening the solid content discharge valve 15c, solid content such as sediment deposited in the solid content reservoir 15a is discharged from the solid content discharge pipe 15b.
By driving the drive unit 23 during the filtration process, the filter 22 is rotated together with the rotary shaft tube 21, and the brush unit 24a of the peeling mechanism 24 disposed in contact with the surface of the filter 22 is attached to the filter 22 surface. Suspended substances can be peeled off and the filtration conditions are kept constant. The brush portion 24a is detachably disposed on the frame 20a. This facilitates maintenance of the brush portion 24a.

FIG. 4 is a schematic cross-sectional view of an essential part of the road cutter wastewater treatment apparatus in the first embodiment.
In FIG. 4, 15 f is a support plate that is disposed on the bottom and sides of the filtration tank 15 and detachably supports the filtration unit 20, and 21 a is a hollow shaft of the rotary shaft 21 that discharges treated water filtered by the filter 22. And 21b are a plurality of water intake holes drilled in the side surface of the rotary shaft tube 21 and communicated with the inside of the filter 22, and 21c is detachably connected to the drain tube 11b (see FIG. 2) by a coupling 21d. The treated water water supply pipe for supplying the treated water discharged from the hollow portion 21a to the drain pipe 11b, 22a is a disk made of a synthetic resin such as vinyl chloride or a metal such as stainless steel, which becomes the core material of the filter 22. Filtration base material, 22b is a mesh body such as a plastic net which is disposed on both sides of the filtration base material 22a and forms a space in which the filtered treated water flows in the filter 22, and 22c is a bag covered with the mesh body. Shape The filter cloth 26b forming the filter 22 is formed at the corner of the baffle plate 26a to allow the treated water to flow therethrough, and 30a and 30b are respectively covered by the upper opening of the filtration tank 15 and the opening 26e of the fresh water tank 16. It is a cover part.
For convenience of explanation, the cover portions 30a and 30b are omitted in FIGS.
FIG. 5 is a front view showing a filter base material of the filter. On the surface of the filtration substrate 22a, a spiral ridge or recess guide portion 22e is formed from the periphery of the filtration substrate 22a toward the insertion hole 22d through which the rotary shaft tube 21 is inserted.
The diameter of the water intake hole 21b was 1 to 10 mm. It can be seen that as the hole diameter of the water intake hole 21b becomes smaller than 1 mm, the flow rate of treated water that can be sucked by the suction pump 17 becomes insufficient, and the treatment amount increases as the hole diameter increases, but the strength decreases as the hole diameter becomes larger than 10 mm. It was. The water intake hole 21b is formed between the guide portion 22e and the guide portion 22e when the guide portion 22e is convex, and is formed on the extension line of the guide portion 22e when the guide portion 22e is concave. . Thereby, the treated water which flows along the guide part 22e is discharged | emitted more reliably.
In this embodiment, the convex or concave guide portion 22e is formed on the surface of the filtration base material 22a. However, instead of the filtration base material 22a, a spiral or radial guide portion 22e is formed by a bone-like frame. It may be formed.
The filters 22 were arranged in parallel with an interval of 30 to 100 mm.
The network 22b preferably has a three-dimensional network structure or a hollow structure. Accordingly, it is possible to effectively prevent the filter cloth 22c from being recessed at the central portion when sucked by the suction pump 17 to contact the front and back filter cloths 22c to block the flow path and impede the filterability.
For the filter cloth 22c, a woven or non-woven fabric made of synthetic fibers such as polyamide, polyester, polyolefin, polyvinyl alcohol, polyacrylonitrile, vinyl acetate is used, and these are sewed or sealed with an adhesive. And formed into a bag shape.

  FIG. 6 is an overall perspective view showing a filtration part of the road cutter wastewater treatment apparatus in the first embodiment. Since the filtration unit 20 having the rotary shaft tube 21, the filter 22, the drive unit 23, the peeling mechanism 24, and the ejection nozzle 25 is fixed and integrated with the frame 20a and placed on the support plate 15f, the filtration tank 15 It can be easily attached and detached and has excellent maintainability. Since the treated water water supply pipe 21c for feeding the treated water discharged from the hollow portion 21a of the rotary shaft pipe 21 to the drain pipe 11b is detachably connected by the soft drain pipe 11b and the coupling 21d, By making the drain pipe 11b long, the drain pipe 11b can be pulled out of the filtration tank 15 together with the frame 20a, and the drain pipe 11b can be easily attached and detached from the treated water supply pipe 21c to filter the frame 20a. The tank 15 can be attached and detached.

Next, a modified example of the peeling mechanism will be described.
FIG. 7A is an overall perspective view showing a first modified example of the peeling mechanism, and FIG. 7B is a plan view of the filtration tank showing the attachment state of the peeling mechanism of the first modified example. FIG. 7C is a schematic cross-sectional view of the relevant part of the filtration tank showing the usage state of the peeling mechanism of the first modification.
The peeling mechanism 34a of the first modified example is different from the peeling mechanism 24 (see FIGS. 3 and 6) in the first embodiment in that both ends of a substantially U-shaped brush fixing portion 35 provided with the brush portion 24a. A substantially square-shaped arm portion 35a is formed at the portion, and a shaft support portion 35b formed at the end of the arm portion 35a is rotatably supported by a brush rotation portion 20b disposed on the frame 20a. It is a point that has been established. Thereby, when not in use, the brush fixing portion 35 can be rotated to clean or replace the brush portion 24a, adjust the overlap amount or the hitting angle between the filter 22 and the brush portion 24a, etc., and is excellent in maintainability. .

  FIG. 8A is a schematic cross-sectional view of an essential part of the filtration tank showing the usage state of the peeling mechanism of the second modification, and FIG. 8B is a filtration showing the usage state of the peeling mechanism of the second modification. It is a top view of a tank. The peeling mechanism 34b of the second modified example is different from the peeling mechanism 34a (see FIG. 7) of the first modified example in that it is formed at both ends of the brush fixing part 35 that rotatably supports the brush part 24a. A cylindrical shaft support portion 35 c is inserted into a cylindrical brush rotation portion 20 c formed concentrically and coaxially with the rotary shaft tube 21, and is fixed by a fixing screw 36. Thereby, alignment with the filter 22 is easy and it is excellent in the workability | operativity at the time of a maintenance. By drilling a plurality of positioning holes in the outer periphery of the shaft support portion 35c, the brush fixing portion 35 can be fixed at a desired angle.

  FIG. 9A is a plan view of the filtration tank showing the usage state of the peeling mechanism of the third modified example, and FIG. 9B is an essential part of the filtration tank showing the usage state of the peeling mechanism of the third modified example. FIG. The peeling mechanism 34c of the third modified example is different from the peeling mechanisms 34a and 34b (see FIGS. 7 and 8) of the first or second modified example in that the brush fixing part that rotatably supports the brush part 24a. Both end portions of 35 are pivotally supported by a brush rotating portion 20b disposed on the frame 20a, and the distal end side of the brush portion 24a away from the brush rotating portion 20b (filter rotating shaft tube 21) is It is a point fixed by pin fitting with a sliding type engaging member 20d disposed on the frame 20a. Thereby, since the brush fixing | fixed part 35 can be fixed reliably and firmly, the shake | fluctuation of the brush fixing | fixed part 35 can be prevented and it is excellent in reliability. During maintenance of the brush portion 24a, the brush fixing portion 35 is rotated so that the longitudinal direction of the brush portion 24a is substantially vertical. Thereby, the brush part 24a can be attached and detached easily, and workability | operativity can be improved. In addition, by fixing the brush fixing portion 35 to the frame 20a or the like using a fixing means such as a chain or a hook, the brush fixing portion 35 is not rotated during the operation by performing the attaching / detaching operation of the brush portion 24a. Excellent workability.

A method for treating suspended wastewater collected from the road cutter 12 using the road cutter wastewater treatment device 11 configured as described above will be described with reference to FIGS. 1 to 4.
First, water is supplied from the water supply pipe 26a to the fresh water tank 16 of the road cutter wastewater treatment apparatus 11 mounted on the construction vehicle 10a. The water in the fresh water tank 16 is supplied to the rotary blade 12a of the road cutter 12 through the lubricating cooling water supply pipe 14 at the site.
Next, the rotary blade 12a is rotated to cut the road surface portion of the asphalt road, and this lubricating cooling water is sucked with a pump (not shown), or is collected by using the reaction force sprayed on the rotary blade 12a, It supplies to the filtration tank 15 of the waste water treatment apparatus 11 for road cutters through the suspended waste water collection pipe 13.
The suspended wastewater supplied from the suspended wastewater supply pipe 11a of the filtration tank 15 is stored in the filtration tank 15 after the large dust or suspended particles with particles are removed by the cage body 15d. The suspended waste water is sucked by the suction pump 17 and then filtered by the filter 22 of the filtration unit 20 in the filtration tank 15. The treated water from which earth and sand and the like have been removed by the filter 22 is sent to the drain pipe 11b through the hollow portion 21a of the rotating shaft tube 21 and the treated water feed pipe 21c from the water intake hole 21b communicating with the inside of the filter 22, and the supply pipe 11c. Can be returned to the fresh water tank 16 and supplied to the road cutter 12 again. When the filter 22 rotates during the filtration process, the brush portion 24a removes the solid content adhering to the surface of the filter cloth 22c of the filter 22, and the filtration is continuously performed.

In order to clean the filter 22 when the filtration process is stopped, the suction pump 17 is stopped, and the drive unit 23 rotates the filter 22 at a speed higher than the rotation speed at the time of filtration or the rotation direction at the time of filtration. Rotate in the reverse direction or repeat forward and reverse rotation. Thereby, the suspended substance adhering to the surface of the filter cloth 22c becomes easy to peel off, and the filtration efficiency can be improved. Further, when the filter 22 is likely to be clogged, it may be back-washed in order to restore the filtering ability.
The earth and sand accumulated in the solid content reservoir 15a of the road cutter wastewater treatment apparatus 11 together with this purification treatment can be discharged from the solid content discharge pipe 15b by opening the solid content discharge valve 15c as appropriate. The liquid or bubbles compressed from the ejection nozzle 25 to the solid content reservoir 15a of the filtration tank 15 are ejected, the lump of suspended solids is loosened, mixed with water and fluidized, and the discharge performance is excellent.
Further, the treated water is neutralized by supplying carbon dioxide gas from the carbon dioxide gas cylinder 27 to the air diffuser 28 disposed in the filtration tank 15 and the fresh water tank 16.
Since the road cutter wastewater treatment device 11 has the legs 11f, the road cutter wastewater treatment device 11 can be lowered from the vehicle 10a and placed on the ground, and can be used at a construction site, a factory, or the like.
The road cutter 12 is used when cutting and drilling concrete materials, asphalt materials, rocks, stones, etc. in addition to road surfaces such as asphalt roads and concrete roads. Suspension waste water such as cutting water drained from the road cutter 12 or recycled water thereof can be filtered.

As described above, the road cutter wastewater treatment apparatus according to Embodiment 1 has the following effects.
(1) Since the filtration tank and the fresh water tank are connected in series, the whole can be made compact, and can be easily moved by mounting the device on the loading platform of a construction vehicle, etc. Suspended wastewater generated when the road surface of the asphalt road is cut with a cutter can be easily treated.
(2) Since the treated water filtered in the filtration tank can be directly stored in the fresh water tank, it does not require energy associated with the transfer of treated water and is excellent in energy saving.
(3) Since the filter is formed in a disk shape and the suspended drainage flows from the outer surface side of the filter to the inner back surface side, the removal of solid content such as suspended substances attached to the outer portion of the filter is performed by a peeling mechanism. It can be done easily.
(4) By having a peeling mechanism that peels off suspended substances attached to the filter cloth surface, it is easy to remove solids such as suspended substances attached to the filter and maintain the filtration conditions constant. As a result, the filtration efficiency can be improved, and a large amount of suspension wastewater from the road cutter can be treated.
(5) Since the filter is disc-shaped and can be filtered on both sides, the filtration surface is doubled and the filtration performance is excellent. Even when the space in the filtration tank is narrow, the filter surface is effectively used to efficiently suspend drainage. Can be processed.
(6) By performing filtration with a disk-shaped filter, there is no eluate as in the case of a conventional water treatment apparatus using a flocculant, so there is no possibility of polluting the environment along with the purification treatment.
(7) Since the treated water stored in the fresh water tank can be repeatedly reused as lubrication cooling water for the road cutter, the cutting work by the road cutter can be continued without replenishing water from the outside, and the workability is excellent. In particular, it is extremely useful and excellent in workability on a work site such as an expressway where there is no source of makeup water.
(8) Since a hollow rotary shaft tube for discharging treated water is inserted into a filter formed entirely sealed in a bag shape, the installation space of the filter and the filtration tank can be made compact, and the device Can be easily mounted on or moved to other construction vehicles.
(9) By having the suction pump connected to the rotating shaft tube, it is possible to perform filtration by sucking the suspended wastewater with the suction pump, so that the processing capacity of the filtration can be improved, and the filter and filtration tank Can be made compact.
(10) A drive unit connected to a rotary shaft tube inserted and fixed at the center of a disk-shaped filter and rotating the rotary shaft tube and the filter, and a peeling mechanism for peeling suspended substances attached to the filter cloth surface of the filter By rotating the filter during the filtration process, suspended substances adhering to the surface of the filter cloth can be peeled off, and the filtration conditions can be easily maintained, thereby improving the filtration efficiency. Can be achieved.
(11) Since it has a fresh water tank, it can be moved to the construction site after storing tap water in advance and lubricated cooling water when cutting the road surface of the asphalt road with a cutter at the construction site where there is no water supply source Can be used as
(12) The suction of the suction pump is stopped when the filter is cleaned, and the filter is attached to the surface of the filter cloth by rotating at a higher speed than the rotation speed at the time of filtration or by rotating in the direction opposite to the rotation direction at the time of filtration. Suspended substances can be easily peeled off, and the filtration efficiency can be improved.
(13) The concentrated turbid water and sludge are taken out from the solid content reservoir after the work is completed by forming a solid content reservoir having a solid content discharge section for discharging the concentrated turbid water and sludge at the bottom of the filtration tank. Disposal and various treatments.
(14) By arranging a net-like cage body in the suspended drainage supply section, it is possible to capture large debris, suspended particles with large particles in advance, and prevent clogging of the solid content discharge section and maintenance. Excellent in properties.
(15) By providing a baffle plate in parallel with the bottom surface of the fresh water tank, it is possible to prevent the treated water stored in the fresh water tank from vibrating when the apparatus is mounted and moved on the loading platform of a construction vehicle, It is possible to prevent the treated water from splashing or spilling on the road.
(16) By providing the overflow drain pipe in the filtration tank, it is possible to prevent the suspended drainage supplied to the filtration tank from overflowing to the outside.
(17) By forming a suspension hole in the upper part of the filtration tank and the fresh water tank, the apparatus can be easily lifted with a wire or the like, and it is excellent in workability in loading and unloading to a construction vehicle or the like.
(18) Since the filter has a disk-shaped filtration base and a mesh body disposed on both sides of the filtration base, the filter is flexible even if the flow rate and throughput of the surrounding suspended wastewater change. The filter cloth can be maintained in a predetermined shape and the processing conditions can be kept constant. Even if solids in the suspended drainage adhere to the surface of the filter cloth, the space inside the filter is not reduced without reducing the water intake efficiency. The shape of the filter can be maintained, and a decrease in filtration efficiency can be suppressed.
(19) Since a disc-shaped filtration base material is disposed as a filter core, it is excellent in handling even when attaching or exchanging a mesh or a filter cloth.
(20) Since the perimeter of the mesh body arranged on both sides of the filter substrate is covered with a filter cloth, the filter can be easily and inexpensively manufactured by sewing or adhering the perimeter, and is excellent in economic efficiency. ing.
(21) Since the rotary shaft tube has a water intake hole communicating with the space portion formed of a net-like body, treated water that is uniformly and uniformly purified can be obtained from the inside of the filter cloth formed in a disk shape, and On the contrary, compressed air or purified water is allowed to flow back through the water hole (backwashing), so that clogging due to adhesion of minute solids to the filter cloth can be prevented, and suspension wastewater can be filtered efficiently. .
(22) By having an ejection nozzle that ejects liquid or bubbles in the filtration tank, the mass of suspended solids accumulated at the bottom of the filtration tank can be fluidized, and the solid formed at the bottom of the filtration tank It is possible to prevent clogging of the minute discharge part and the like, and it is possible to quickly discharge concentrated muddy water and sludge for disposal and various treatments.
(23) Since the peeling mechanism has a brush portion arranged in contact with the outer surface of the filter, the brush tip contacts the filter cloth surface of the filter by the brush portion only by rotating the filter by the driving portion. Since the adhering suspended solids can be peeled off, the filter surface can be cleaned even during the filtration process to keep the filtration throughput constant.
(24) When the peeling mechanism includes a brush fixing portion that supports the brush portion in a rotatable manner, the brush portion is rotated when not in use for easy cleaning and replacement. It can be adjusted and is excellent in maintainability.
(25) When the brush fixing portion supports the brush portion so as to be rotatable, the attachment angle of the brush portion can be arbitrarily set according to the water level of the suspended drainage in the filtration tank, and the versatility is excellent.
(26) When the brush portion is arranged so as to be orthogonal to the rotation direction of the filter, the entire brush portion can always be brought into contact with the circular filter in a stable state, and the filter cloth surface of the filter It is possible to evenly scrape suspended substances adhering to the surface.
(27) By including a frame that detachably holds the filter unit having the filter, the rotary shaft tube, the drive unit, and the peeling mechanism with respect to the filter tank, the filter unit can be handled integrally with the frame. It is possible to perform maintenance such as cleaning and replacement by taking out from the filtration tank.
(28) By disposing a support plate that supports the frame at the bottom of the filtration tank, it can also function as a baffle plate, and the turbulence of suspended drainage in the filtration tank can be reduced.
(29) By having an air diffuser as a neutralizing means, carbon dioxide gas can be blown into the suspended waste water to neutralize alkali components such as calcium hydroxide and to neutralize the treated water.
(30) The filter has a disk-shaped filtration base material serving as a core material, and a spiral or radial guide portion formed in a spiral shape or radial shape from the periphery of the filtration base material toward the rotary shaft tube. Rotating the filter allows the treated water to be collected in the lower part of the filter like a water wheel to be pumped up toward the rotating shaft tube, so that filtered water can be discharged even if the water level inside the filter falls below the rotating shaft tube. It becomes easy to discharge, and the filtration processing capacity can be improved by effectively utilizing the entire area of the filter.
(31) By having legs in the filtration tank and fresh water tank, the device can be stably mounted on the loading platform of a construction vehicle, etc., and can be installed independently on the construction site, etc. Excellent in properties.

According to the control method of the waste water treatment apparatus for road cutter in Embodiment 1, it has the following operations.
(1) By stopping the suction of the suction pump when the suspended substance is peeled off by the peeling mechanism, the suction force acting on the suspended substance attached to the filter cloth surface of the filter disappears and the filter cloth that has been dented by the suction is restored. Since the contact area with the peeling mechanism increases, the suspended substance can be easily peeled off by the peeling mechanism, and the filtration conditions can be kept constant.
(2) When the suction pump stops suction, the suspended matter attached to the surface of the filter cloth is easily peeled off by rotating the filter in reverse or by reciprocating rotational movement that repeats forward and reverse rotation alternately. Efficiency can be improved.

The road cutter work vehicle including the road cutter wastewater treatment apparatus according to Embodiment 1 has the following effects.
(1) Since the road cutter wastewater treatment equipment in which a filtration tank and a fresh water tank are connected in series is mounted on a vehicle for construction work, etc., the whole can be made compact and easily moved, and has excellent mobility. .
(2) Since it has a wastewater treatment device for road cutters, it can treat suspended wastewater generated when cutting road surfaces of asphalt and concrete roads with road blades without any external discharge. Are better.
(3) Since the road cutter wastewater treatment device is mounted on the vehicle, the road cutter wastewater treatment device can be operated with the power supply of the vehicle instead of the external power supply. Excellent in properties.
(4) a suspension drainage recovery unit for recovering suspension drainage discharged from the road cutter, a lubricating cooling water supply pipe for feeding treated water stored in a fresh water tank of a road cutter wastewater treatment device to the road cutter, In addition to purifying suspended wastewater collected from road cutters, the treated water after filtration can be circulated through the road cutter as lubrication cooling water and reused repeatedly, allowing construction even at construction sites without a water supply source. The construction site can be greatly expanded.
(5) Equipped with a wastewater treatment device for road cutters, purifies suspended wastewater collected from road cutters, circulates the treated water after filtration as lubricating cooling water for road cutters, and repeatedly uses it, after the work is finished As a result, the amount of suspended wastewater can be significantly reduced compared to the conventional case, and the load on the disposal site can be reduced.

Next, the waste water treatment apparatus for road cutters in Embodiment 2 is demonstrated.
FIG. 10 is an overall perspective view showing a filtration portion of the road cutter wastewater treatment apparatus in the second embodiment.
In FIG. 10, the filtration unit 50 of the second embodiment is different from the filtration unit 20 of the first embodiment in that the drive transmission unit 23 a is engaged and the power from the drive unit 23 is transmitted to rotate the sprocket shaft 23 b. Are detachably connected to the rotary shaft tube 21 by a connecting portion 23c, and are disposed between adjacent filters 22 and 22, respectively, in contact with the surfaces of the left and right filters 22 and 22 at both end surfaces. It is the point which has the long plate-shaped filter protective material 51 made.
When the filter 22 is replaced, the filtration unit 50 is lifted from the filtration tank 15, the rotary shaft tube 21 and the sprocket shaft 23b are separated, and the other end of the rotary shaft tube 21 that is not connected to the sprocket shaft 23b is attached to the frame 50a. The rotary shaft tube 21 and the filter 22 can be disassembled from the frame 50a. Thereby, the filter 22 can be easily attached and detached from the end of the rotating shaft tube 21.

Fixing holes 51a are formed in the upper and lower ends of the respective filter protection members 51 in the form of horizontally long slots, and bolts are attached to the vertical portions 52a of the upper and lower protection material fixing frames 52, 52 formed in a substantially L shape. And a protective material fixing portion 53 using a nut and detachably fixed. Thereby, the plurality of filter protection members 51 can be handled integrally by the protection material fixing frame 52. Further, the fixing hole 51a is formed in the shape of a long hole and screwed with the protective material fixing portion 53, thereby making it easy to attach and detach the filter protective material 51 to the protective material fixing frame 52 and adjust the position in the left-right direction, and maintainability. Assembling workability is improved.
The horizontal portion 52b of the protective material fixing frame 52 disposed on the upper end side of the filter protective material 51 is detachably screwed and fixed to the protective material support frame 50b of the frame 50a by a frame fixing portion 54 such as a bolt. Thereby, since it can attach or detach easily to the flame | frame 50a, it is excellent in an assembly and disassembly workability | operativity.
Further, an insertion hole 52c is formed in the horizontal portion 52b of the protective material fixing frame 52 disposed on the lower end side of the filter protective material 51, and a fixed shaft 55 standing on the protective material support frame 50c of the frame 50a is inserted. . As a result, the plurality of filter protection members 51 integrated with the protection member fixing frame 52 can be easily attached to and detached from the frame 50a only by attaching / detaching the frame fixing portion 54, and the workability of assembly and maintenance is excellent. In addition, the lower end side protective material fixing frame 52 can be guided by the fixed shaft 55, the filter protective material 51 can be positioned with respect to the filter 22, and the filter protective material 51 can be prevented from shaking, which is excellent in reliability.
In the present embodiment, the filter protection material 51 is formed in a long plate shape, but a wire material such as a wire, a brush, or the like can also be used.

As described above, according to the waste water treatment apparatus for a road cutter in the second embodiment, in addition to the first embodiment, the following action is provided.
(1) Since the rotary shaft tube 21 and the sprocket shaft 23b that transmits the power from the drive unit 23 to rotate the rotary shaft tube 21 are detachably connected by the connecting portion 23c, the rotary shaft tube 21 and the sprocket Since the shaft 23b can be separated, the rotary shaft tube 21 can be detached from the frame 50a, the filter 22 can be easily attached and detached from the end of the rotary shaft tube 21, and the maintainability is excellent.
(2) The filter 22 generated during transportation by bringing both end faces of the filter protection material 51 formed in the shape of a long plate between the adjacent filters 22 and 22 into contact with the surfaces of the left and right filters 22 and 22. Distortion and displacement due to vibration of the filter 22 can be prevented, the filter 22 can be prevented from being damaged, and excellent in reliability and durability.
(3) Since both end surfaces of the filter protection material 51 are arranged in contact with the surfaces of the left and right filters 22, suspended matter adhering to the filter cloth surface of the filter 22 during filtration is assisted by the filter protection material 51. Can be peeled off, and a reduction in filtration capacity can be prevented.
(4) By fixing the filter protection material 51 to the protection material fixing frame 52 by the protection material fixing portion 53, the plurality of filter protection materials 51 can be handled integrally by the protection material fixing frame 52 and assembled with the frame 50a. Excellent disassembly workability.
(5) Since the fixing holes 51a at the upper end portion and the lower end portion of the filter protective material 51 are respectively formed in a horizontally long slot shape, and are fixed to the protective material fixing frame 52 by a removable protective material fixing portion 53, the filter The attaching / detaching operation of the protective material 51 to the protective material fixing frame 52 and the adjustment of the position in the left-right direction are easy, and the maintenance performance and the assembly workability are excellent.
(6) Since the protective material fixing frame 52 on the upper end side where the plurality of filter protective materials 51 are arranged is fixed to the protective material support frame 50b of the frame 50a only by the upper frame fixing portion 54, the protective material fixing frame 52 The attachment / detachment work to / from the frame 50a is easy, and the workability of assembly and maintenance is excellent.
(7) By inserting the fixed shaft 55 erected on the protective material support frame 50c of the frame 50a into the insertion hole 52c formed in the lower protective material fixing frame 52, the protective material for the plurality of filters 22 is provided. The plurality of filter protection members 51 integrated with the fixed frame 52 can be easily positioned, and the vibration of the filter protection member 51 can be prevented, and the reliability is excellent.

  The present invention can be easily mounted on a road construction vehicle or the like and has excellent mobility, convenience and wastewater treatment on the road site, and efficiently cleans and recycles wastewater after use with a road cutter without polluting the environment. It is a wastewater treatment device for road cutters that can be used. Especially, it can be used on road cutter work vehicles and can be constructed even on sites without water replenishment facilities. It has less waste and is highly convenient and has excellent mobility and workability.

Explanatory drawing of the construction site where the waste water treatment device for road cutters in Embodiment 1 is applied Whole perspective view of the waste water treatment device for road cutters in Embodiment 1 The top view of the waste water treatment equipment for road cutters in Embodiment 1 Cross-sectional schematic diagram of relevant parts of the wastewater treatment device for road cutters in the first embodiment Front view showing filter base material Whole perspective view which shows the filtration part of the waste water treatment equipment for road cutters in Embodiment 1 (A) Whole perspective view showing a first modified example of the peeling mechanism (b) Plan view of a filtration tank showing a mounting state of the peeling mechanism of the first modified example (c) Use of the peeling mechanism of the first modified example Cross-sectional schematic diagram of the relevant part of the filtration tank showing the state (A) Schematic cross-sectional view of the main part of the filtration tank showing the use state of the peeling mechanism of the second modification (b) Plan view of the filtration tank showing the use state of the peeling mechanism of the second modification (A) The top view of the filtration tank which shows the use condition of the peeling mechanism of a 3rd modification (b) The principal part cross-sectional schematic diagram of the filtration tank which shows the use condition of the peeling mechanism of a 3rd modification Whole perspective view which shows the filtration part of the waste water treatment equipment for road cutters in Embodiment 2

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Road cutter working vehicle 10a Vehicle 11 Road cutter wastewater treatment apparatus 11a in Embodiment 1 Suspension drainage supply pipe 11b Drainage pipe 11c Supply pipe 11d Treated water discharge pipe 11e Treated water discharge valve 11f Leg 12 Road cutter 12a Rotating blade 13 Suspended drainage recovery pipe 14 Lubrication cooling water supply pipe 15 Filtration tank 15a Solid content reservoir 15b Solid content discharge pipe 15c Solid content discharge valve 15d Basket body 15e Overflow drain pipe 15f Support plate 16 Fresh water tank 17 Suction pump DESCRIPTION OF SYMBOLS 20 Filtration part 20a Frame 20b Brush rotation part 20c Brush rotation part 20d Engagement member 21 Rotating shaft pipe 21a Hollow part 21b Water intake hole 21c Treated water supply pipe 21d Coupling 22 Filter 22a Filtration base material 22b Net body 22c Filter cloth 22d Insertion hole 22e Guide part 23 Moving portion 23a Drive transmission portion 23b Sprocket shaft 23c Connection portion 24 Peeling mechanism 24a Brush portion 24b Bristles 25 Jet nozzle 26a Baffle plate 26b Communication portion 26c Top plate portion 26d Water supply pipe 26e Opening portion 27 Carbon dioxide gas cylinder 27a Tube 28 Suspension hole 34a Peeling mechanism of the first modification 34b Peeling mechanism of the second modification 34c Peeling mechanism of the third modification 35 Brush fixing part 35a Arm part 35b Shaft support part 35c Shaft support part 36 Fixing screw 50 Embodiment 2 50a frame 50b protective material support frame 51 filter protective material 51a fixing hole 52 protective material fixing frame 52a vertical portion 52b horizontal portion 52c insertion hole 53 protective material fixing portion 54 frame fixing portion 55 fixing shaft

Claims (12)

  A filtration tank to which a suspended drainage of a road cutter is supplied, and a bag that is disposed in the filtration tank and in which the suspended drainage is supplied from the outer surface side and filtered is discharged from the inner back side. A disk-shaped filter formed in the shape of a filter, a hollow rotary shaft tube that is inserted and fixed in the center of the filter and drains treated water filtered by the filter, and the rotary shaft that is connected to the rotary shaft tube A driving unit for rotating the pipe and the filter, a suction pump connected to the rotary shaft pipe, a peeling mechanism for peeling the suspended substances attached to the filter cloth surface of the filter, and the treated water of the filtration tank A waste water treatment apparatus for road cutters, comprising: a fresh water tank in which water is stored.   The waste water treatment apparatus for a road cutter according to claim 1, wherein the filtration tank and the fresh water tank are continuously provided via one side wall of the filtration tank or the fresh water tank.   3. The jet nozzle according to claim 1, further comprising: a jet nozzle that jets liquid or bubbles into the filtration tank to fluidize a mass of suspended solids accumulated at a bottom of the filter tank. 4. The waste water treatment apparatus for road cutters as described in 2.   The peeling mechanism includes a brush portion disposed in contact with an outer surface of the filter and a brush tip, and a brush fixing portion that rotates and supports the brush portion at an arbitrary angle. The wastewater treatment apparatus for a road cutter according to any one of claims 1 to 3, wherein the wastewater treatment apparatus is for a road cutter.   The waste water treatment apparatus for a road cutter according to claim 4, wherein the brush portion is disposed so as to be orthogonal to the rotation direction of the filter.   The frame according to any one of claims 1 to 5, further comprising a frame that detachably holds a filtration unit including the filter, the rotary shaft tube, the drive unit, and the peeling mechanism with respect to the filtration tank. The wastewater treatment apparatus for road cutters described in any one of the above.   The road according to any one of claims 1 to 6, further comprising neutralizing means for neutralizing the alkaline suspended waste water inside the filtration tank and / or the fresh water tank. Waste water treatment equipment for cutters.   The neutralizing means includes (a) an air diffuser disposed inside the filtration tank and / or the fresh water tank, and a carbon dioxide supply unit that supplies carbon dioxide to the air diffuser, or ( The waste water for a road cutter according to claim 7, further comprising: b) a fine bubble mixed liquid ejector; and a pump for supplying a mixed fluid of carbon dioxide and water to the fine bubble mixed liquid ejector. Processing equipment.   The filter has a disk-shaped filtration base material serving as a core material, and convex or concave guide portions formed in a spiral shape or a radial shape from the periphery of the filtration base material toward the rotary shaft tube. The wastewater treatment apparatus for a road cutter according to any one of claims 1 to 8, wherein the wastewater treatment apparatus is for a road cutter.   The drainage for a road cutter according to any one of claims 1 to 9, further comprising a filter protection member disposed between the adjacent filters and having an end face in contact with the surface of each filter. Processing equipment.   The suction of the suction pump is stopped when the suspended matter is peeled off by the peeling mechanism of the road cutter wastewater treatment device according to any one of claims 1 to 10, and the filter is rotated reversely or forwardly rotated. A control method for a wastewater treatment device for a road cutter, characterized in that the reciprocating rotational motion is repeated alternately and reversely. 11. A road cutter that cuts asphalt or concrete road surface while supplying lubricating cooling water to the rotary blade, and a suspension drainage collection unit that collects suspension drainage discharged from the road cutter, Or a lubrication cooling water supply pipe provided with a pump for feeding treated water stored in the fresh water tank of the road cutter wastewater treatment apparatus to the road cutter. A work vehicle for a road cutter, comprising:

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