JP2001248110A - Circulation type cut slurry cleaning device and road surface cutting method using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such problems that the cooling water used once conventionally becomes slurry including cut surplus soil in the cutting work of concrete and asphalt ill effects are caused by the sediment at various places, chips are precipitated in the sewer after the slurry is discharged in the sewer, an enormous cost is required for its disposal, the chips spread on the road surface are dried and scattered as fine powder and grains after the slurry is discarded on the road surface, this causing an environmental pollution problem, in a present, slurry processing there is no proper processing method thus the slurry is discarded in the sewer or on the road surface after the cooling water is used. SOLUTION: The slurry generated in the cutting work of concreted and asphalt on the road surface is fed to a water cleaning tank provided together with a feed water tank installed on a cutter conveying vehicle, and the slurry is separated there into water and surplus soil. Water is circulated for reuse many times as the cooling water, and the cut surplus soil separated from the slurry can be disposed as the construction surplus soil at a site in this circulation type cut slurry device and a road surface cutting method using this device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulating cutting mud water purifying apparatus and a road surface cutting method using the same, and more particularly, to a method of purifying and circulating cooling water for a rotary cutter blade in concrete and asphalt cutting work. It relates to a circulating cutting mud water purifying device that can save consumption significantly and stores the residual soil separated and settled from mud in a water-permeable bag and treats it as construction residual soil, and a road surface cutting method using the device. .

[0002]

2. Description of the Related Art Conventionally, in cutting concrete and asphalt, 6 liters of water per minute is required to cool a diamond blade blade and to prevent scattering of cutting powder. Assuming an average working time of 5 hours a day, 1800 liters of water is required, and 1800 liters of cooling water required for one day's work must be carried in a water supply tank and transported by a cutting machine carrier. Must. Since the transport vehicle has a cutting machine in addition to the water supply tank, a 2-ton vehicle would be overweight. Also, the cooling water used once is mud containing 200 liters of cutting residual soil per 1000 liters. There is no proper treatment method to treat this mud at present. That is the current situation. Therefore, since muddy water after use of the cooling water is discarded in a sewage ditch or a road surface, there is an adverse effect due to the earth and sand in various places. When discarded in the sewer, the cutting powder precipitates in the sewer and the treatment thereof requires enormous cost. At present, cooling water in Japan is about 5 million m
³ Since you are using them surplus soil is about 1 million ^{m 3,} and the year because the surplus soil processing costs are consuming 20,000 yen per 1m ³ 2
It costs as much as ¥ 100 billion to process the remaining soil. In addition, when discarded on the road surface, the cutting powder scattered on the road surface is dried and becomes fine powder particles and scatters to cause an environmental pollution problem.

[0003]

Accordingly, muddy water generated in the work of cutting concrete or asphalt on the road surface is sent to a water purifying tank attached to a water supply tank installed on a cutting machine carrier, and the muddy water is separated into water and residual soil there. Water is circulated so that it can be reused many times as cooling water, and the cutting waste soil separated from the muddy water can be disposed of on-site as construction waste soil. An object of the present invention is to provide a cutting method. According to the apparatus and method of the present invention, the cooling water can save 70% of the conventional cooling water consumption by consuming only about 30% of the unrecoverable amount absorbed by the roadbed.
Muddy water will not be released to sewers and rivers, and the cutting powder scattered on the road surface will be dried and become fine powder particles, which will not cause environmental pollution problems.

[0004]

According to the present invention, there is provided a water supply tank 3 having a plurality of muddy water purification tanks mounted on a cutting machine carrier 1.
And a cutting machine 2. A muddy water collecting hose 6 is provided between one end of the muddy water purification tank 4 and a vacuum pump provided in the cutting machine.
And a water supply hose 5 connects a water supply tank 3 communicating with the other end of the muddy water purifying tank 4 and a cooling water discharge section toward the cutter blade.
9 ', the connecting pipes 19' are positioned so as to become lower as they go downstream, and the inside of each muddy water purification tank is divided into an upstream chamber and a downstream chamber by suspending the partition plate 4 'from the top to the middle. The perforated basket 12 which can be taken out through the opening 4 ″ is housed in the purifying tank space below the partition plate,
A permeable bag 13 for storing the residual soil separated and settled from the muddy water is arranged inside the basket, and a sink 7 is extended forward from under each muddy water purifying tank, and the upper surface of the sink is formed into a permeable structure 8. A bag containing mud is placed on top of it to allow drainage, and a water tank is provided with a reserve tank 3 'interrupted by a partition 3 ", and a water level holding device 18 is provided between the water tank and the reserve tank 3'. Is provided to maintain the water level of the water supply tank constant, and the muddy water sucked by the vacuum pump is sent to the muddy water purifying tank 4, and the cutting residual soil contained in the muddy water is separated and settled in the process of passing through each water purifying tank so that the clear water is formed. The present invention is a circulation type cutting mud water purifying apparatus which can use the clear water as cutting cooling water many times and also enables on-site treatment of mud stored in a water-permeable bag. A mud water purifying tank, which is provided with a plurality of mud water purifying tanks and a cutting machine 2, is connected between one end of the mud purifying tank 4 and a vacuum pump provided in the cutting machine by a mud collecting hose 6. A water supply hose 3 connects a water supply tank 3 communicating with the other end of the water supply tank 4 and a cooling water discharge section toward the cutter blade, and a plurality of muddy water purification tanks 4 are connected by connection pipes 19 ′. 19 ′ is positioned so as to become lower as it goes downstream, and the inside of each muddy water purifying tank is divided into an upstream chamber and a downstream chamber by suspending the partition plate 4 ′ from the top to the middle, and the purifying tank space below the partition plate. A perforated basket 12 which can be taken out through an opening 4 "is housed in the portion, and a water-permeable bag 13 for accommodating the residual soil separated and settled from the muddy water is arranged inside the basket. Extend the sink 7 to the front Then,
The upper surface of the sink is made to have a water-permeable structure 8 and a bag containing mud is placed thereon to enable drainage. A water supply tank is provided with a reserve tank 3 'interrupted by a partition 3 ". 3 ′, a water level holding device 18 is provided to keep the water level of the water supply tank constant, and the muddy water sucked by the vacuum pump is sent to the muddy water purifying tank 4 and contained in the muddy water in the process of passing through each water purifying tank. By using a recirculating-type cutting mud purification system that can obtain clear water by separating and sedimentation of the remaining cutting soil, and use the clear water as cutting cooling water many times, and enable on-site treatment of mud stored in a water-permeable bag. This is a road surface cutting method for performing road surface cutting work.

[0005]

A plurality of mud water purifying tanks and a water supply tank provided with a mud water purifying tank are mounted on a cutting machine carrier 1 to go to a work site, where the cutting machine is lowered and work is started. Therefore, at the time of cutting concrete or asphalt on the road surface, muddy water is sucked by a vacuum pump provided in the cutting machine and sent to the first water purification tank 4 installed on the cutting machine carrier by the muddy water collecting hose 6. At this time, the water purification tank 4, the water supply tank 3, and the reserve tank 3 'are filled with cooling water. This mud is in tank 4
Passes through the upstream chamber, turns under the partition plate 4 ', flows into the downstream chamber, ascends there, passes through the connecting pipe 19', and flows into the next water purification tank 4.
Into the upstream chamber of By repeating this, it flows into the water supply tank 3 through the connection pipe 20 of the last water purification tank.
During that time, the residual soil in the muddy water separates from the water and precipitates below, and is stored in the water-permeable bag 13. The clear water that has reached the last fifth water purification tank in FIG. 5 has changed from PH1 to 2 at the time of muddy water to PH5 to 7. In the operation, assuming that the capacity of each water purification tank 4 is 100 liters and the cooling water is consumed at 6 liters / minute, 4 liters / minute is returned to the water supply tank 3 when the water purification starts to circulate. By supplying 2 liters / minute from the tank 3 'to the water supply tank 3, the water level in the water supply tank 3 is kept constant. In this operation, the float type level switch 18 is operated and the submersible pump 17 supplies water. The partition plate 3 "'of the reserve tank acts as a squib. The connecting pipe 19' is positioned so as to be lowered as it goes downstream, so that water can easily flow. It is separated from muddy water and settled and stored in the water-permeable bag 13. The remaining soil is removed together with the bags by pulling out the perforated basket 12 from the opening 4 "of the purification tank. At this time, the cock 15 of the siphon pipe 14 can be opened to drain the water from the purification tank to the sink 7. If the removed bags 13 are arranged on the front wire mesh 8,
Since the wire mesh 8 is also permeable, the remaining soil contained in the bag 13 is drained of moisture, so that when the operation is continued and the state becomes appropriate, the bag 13 can be lowered and disposed of as construction residual soil. The water collected in the sink 7 is returned by the pump 16 to the first purified water tank 4 through the line 16 ′. The cut particles are very small. Since asphalt is about 1 to 80 μm and concrete is about 1 to 120 μm, it hardly precipitates. Therefore, the cutting mud solidifying agent charging device 2 is placed on the upper lid of the water purification tank at an appropriate stage among the plurality of water purification tanks 4 into which the muddy water flows.
1, 21 'may be attached, and cement or gypsum as a solidifying agent may be introduced in response to the inflow of muddy water into the muddy water purification tank 4 to promote precipitation. The cutting mud solidifying agent feeding device is a device in which a small motor is attached to a hopper containing a solidifying agent, and a switch is operated by the inflow of muddy water so that an outlet of the hopper is opened. About 2 g of the solidifying agent per liter of muddy water is sufficient.

[0006]

[Embodiment 1] The present invention places a water supply tank 3 provided with five muddy water purifying tanks 4 and a cutting machine 2 on a cutting machine carrier 1 and goes to a work site, where the cutting machine is lowered to remove asphalt or the like. This is a circulating cutting mud water purifying device used for cutting concrete road surfaces. The present invention comprises a water supply tank 3 equipped with five muddy water purifying tanks mounted on a cutting machine transport vehicle 1 and a cutting machine 2, and as shown in FIG. 1, one end of a muddy water purifying tank 4 and a cutting machine are provided. The muddy water recovery hose 6 connects the vacuum pump and the water supply tank 3 communicating with the other end of the muddy water purification tank 4 and the cooling water discharge section toward the cutter blade. The five muddy water purifying tanks 4 are connected by connecting pipes 19 ', and these connecting pipes 19' are connected.
Is positioned to be lower as it goes downstream.
The inside of each muddy water purifying tank has a partition plate 4 'hung from the top to the middle to divide it into an upstream chamber and a downstream chamber, and also serves as a stopper. A rectangular basket 12 having a perforated shape corresponding to the shape is housed in the rectangular purification tank space below the partition plate 4 ', and a water-permeable bag 13 is arranged inside the basket so that the residual soil separated and settled from the muddy water there. To accommodate. An opening 4 ″ is formed in the purification tank to allow the perforated basket 12 to enter and exit, and a rubber seal is provided around the opening 4 ″ to provide a seal when the lid 9 is closed.
As shown in FIGS. 2, 3 and 4, a U-shaped arm 10 is detachably attached to the outside of the purification tank in order to tighten the lid 9, and a bolt 11 is screwed into the center of the arm, and the tip of the bolt 11 is attached to the lid 9. And tighten it. A bag 1 containing mud is formed by extending a sink 7 from the bottom of each muddy water purification tank forward, and making the upper surface of the sink a wire mesh structure 8.
Drain can be done just by placing 3 on it. FIG.
As shown in the figure, a reserve tank 3 'interrupted by a partition wall 3 "is provided in the water supply tank 3, and a float type level switch 18 is provided between the water supply tank and the reserve tank 3' to keep the water level of the water supply tank constant. Before removing the remaining soil contained in the water-permeable bag 13 together with the bag from the opening 4 ″ of the purification tank, the cock 15 of the siphon pipe 14 can be opened to drain the water from the purification tank to the sink 7. The water accumulated in the sink 7 is returned by the pump 16 to the first purified water tank 4 through the pipe 16 ′. Since the cut particles are very small, they do not easily settle. Therefore, as shown in FIG. 5, the cutting mud solidifying agent charging device 21 is mounted on the upper lid of the first water purification tank among the five water purification tanks 4 into which the muddy water flows, and cement is contained therein, and the third water purification is performed. A cutting mud solidifying agent charging device 21 'is attached to the upper lid of the tank, and gypsum is contained therein. In response to the inflow of the muddy water into the muddy water purifying tank 4, cement or gypsum can be added to promote the sedimentation.
Thus, in this embodiment, the muddy water sucked by the vacuum pump is sent to the muddy water purifying tank 4, and in the process of passing through each water purifying tank, the cutting residual soil contained in the muddy water is separated and settled to obtain clear water. This is a circulating cutting mud water purifying device that can be used many times as well as enables on-site treatment of mud stored in a water-permeable bag.

[0006]

Embodiment 2 In this embodiment, muddy water sucked by a vacuum pump is sent to a muddy water purifying tank 4, and in the process of passing through each water purifying tank, cutting residual soil contained in the muddy water is separated and settled to obtain clear water. Is a road surface cutting method for performing road surface cutting work using the circulating-type cutting mud water purifying apparatus of Example 1 which can be used as cutting water repeatedly and enables on-site treatment of mud contained in a water-permeable bag. .

[0007]

According to the present invention, the muddy water, which is used cooling water, is sent to the muddy water purifying tank 4 without being discarded by the above-described structure.
Since it has been purified and returned to the water supply tank 3 to be circulated and can be used many times, the cooling water consumes only about 30% of the unrecoverable amount absorbed by the roadbed, and the conventional cooling water is used. The effect is that about 70% of the amount can be saved. About 10% of the 70% recovered water is recovered from the sink. Such muddy water is collected and separated into water and residual soil, and the separated and settled cutting residual soil is collected in a bag and easily carried, so that it can be disposed of on-site as construction residual soil. Therefore, unlike conventional methods, muddy water is not released to sewers and rivers, eliminating the need for enormous disposal costs required for disposal in sewers and cutting powder that has been scattered on the road surface. There is also an effect that the particles are not scattered as fine particles to cause an environmental pollution problem. Since the cooling water is circulated according to the present invention so that it can be used many times, in addition to the water saving effect, the amount of the portable cooling water prepared for one-day work can be reduced from the conventional 1600 to 2000 liters to 600 to 10 liters.
It can be reduced to 00 liters, and as a result, there is an effect that an economical 2-ton vehicle can be used.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a cutting machine transport vehicle and a cutting machine showing a state in which a cutting machine is unloaded from the cutting machine transport vehicle to perform a road surface cutting of the present invention.

FIG. 2 is a front view of one mud water purifying tank according to the present invention, showing a state in which an opening for taking a basket in and out is covered with a lid and tightened with a tightening member.

FIG. 3 is a plan view of the fastening member of FIG. 2;

FIG. 4 is a side view of a water supply tank provided with a muddy water purification tank of the present invention.

FIG. 5 is a plan view of the muddy water purifying tank and the water supply tank of FIG. 4, with an upper cover removed to show the inside of the muddy water purifying tank.

FIG. 6 is a schematic longitudinal sectional view of the muddy water purification tank of FIG. 4, as viewed from the front.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cutting machine conveyance vehicle 2 Cutting machine 3 Water supply tank 4 Mud water purification tank 3 'Reserve tank 4' Mud water purification tank partition plate 3 "Partition wall 4" Mud water purification tank opening 3 "'Reserve tank partition plate 5 Water supply hose 7 Sink 6 Mud collecting hose 9 Lid 8 Wire mesh 11 Clamping bolt 10 Arm 13 Water-permeable bag 12 Perforated basket 15 Cock 14 Siphon pipe 17 Submersible pump 16 Pump 19 Muddy water inflow pipe 16 'Pipeline 19' Connection pipe 18 Float type level switch 21, 21 'solidifying agent charging device 20 connecting pipe to water supply tank 23 vacuum cover 22 cutter blade 24 vacuum hose

Claims (6)

[Claims] A cutting machine is provided with a plurality of water tanks provided with a plurality of mud water purifying tanks mounted on a cutting machine carrier and a cutting machine, and one end of the mud water purifying tank and a vacuum pump provided in the cutting machine are connected. Connected with mud recovery hose 6 and mud purification tank 4
A water supply hose 3 connects a water supply tank 3 communicating with the other end of the water supply tank and a cooling water discharge section toward the cutter blade, and a plurality of muddy water purification tanks 4 are connected by connection pipes 19 ′. Is positioned so as to become lower as it goes downstream, and the inside of each muddy water purifying tank is divided into an upstream chamber and a downstream chamber by suspending the partition plate 4 ′ from above to the middle, and the purifying tank space below the partition plate. , A perforated basket 12 which can be taken out through the opening 4 "is housed therein, and a water-permeable bag 13 for housing the residual soil separated and settled from the muddy water is arranged inside the basket.
A sink 7 is protruded forward from under each muddy water purifying tank, and the upper surface of the sink is made to have a water-permeable structure 8 and a bag containing mud is placed thereon to enable drainage. A reservoir tank 3 'interrupted by "" is provided, and a water level holding device 1 is provided between the water supply tank and the reserve tank 3'.
8 to maintain the water level of the water supply tank constant, and to send the muddy water sucked by the vacuum pump to the muddy water purifying tank 4 so that the cutting residual soil contained in the muddy water separates and precipitates in the process of passing through each water purifying tank. A circulating cutting mud water purifying device that obtains clear water and can use the clear water many times as cutting cooling water, and enables on-site treatment of mud stored in a water-permeable bag. 2. Each muddy water purifying tank 4 is provided with a siphon pipe 14 toward the sink 7 so that water in each muddy water purifying tank can be drained to the sink if necessary, and the water accumulated in the sink is pumped. 2. The circulation type cutting muddy water purifying apparatus according to claim 1, wherein the liquid is returned to the first muddy water purifying tank at 16. 3. A cutting mud solidifying agent introducing device 21 into a water purification tank at an appropriate stage among a plurality of water purification tanks 4 into which mud water flows.
3. The circulating cutting slurry purifying apparatus according to claim 1, wherein a solidifying agent is supplied in response to the inflow of the slurry into the slurry purifying tank. 4. A cutting machine comprising a plurality of water supply tanks 3 provided with mud water purifying tanks mounted on a cutting machine transport vehicle 1 and a cutting machine 2, and one end of the mud water purifying tank 4 and a vacuum pump provided in the cutting machine. Connected with mud recovery hose 6 and mud purification tank 4
A water supply hose 3 connects a water supply tank 3 communicating with the other end of the water supply tank and a cooling water discharge section toward the cutter blade, and a plurality of muddy water purification tanks 4 are connected by connection pipes 19 ′. Is positioned so as to become lower as it goes downstream, and the inside of each muddy water purifying tank is divided into an upstream chamber and a downstream chamber by suspending the partition plate 4 ′ from above to the middle, and the purifying tank space below the partition plate. , A perforated basket 12 which can be taken out through the opening 4 "is housed therein, and a water-permeable bag 13 for housing the residual soil separated and settled from the muddy water is arranged inside the basket.
A sink 7 is protruded forward from under each muddy water purifying tank, and the upper surface of the sink is made to have a water-permeable structure 8 and a bag containing mud is placed thereon to enable drainage. A reservoir tank 3 'interrupted by "" is provided, and a water level holding device 1 is provided between the water supply tank and the reserve tank 3'.
8 to maintain the water level of the water supply tank constant, and to send the muddy water sucked by the vacuum pump to the muddy water purifying tank 4 so that the cutting residual soil contained in the muddy water separates and precipitates in the process of passing through each water purifying tank. A road surface cutting method that uses clear water and can use the clear water many times as cutting cooling water, and cuts the road surface using a circulating cutting mud water purification device that enables on-site treatment of mud stored in a water-permeable bag . 5. A siphon tube 14 is provided in each of the muddy water purifying tanks 4 toward the sink 7 so that water in each muddy water purifying tank can be drained to the sink if necessary, and the water accumulated in the sinks is pumped. The road surface cutting method according to claim 5, wherein the method returns to the first muddy water purification tank (4) at step (16). 6. A cutting mud solidifying agent introducing device 21 into a water purification tank at an appropriate stage among a plurality of water purification tanks 4 into which mud water flows.
The road surface cutting method according to claim 4 or 5, wherein a solidifying agent is added in response to the inflow of the muddy water into the muddy water purification tank (4).