JPS58117389A - Drawing and discharging apparatus for muddy water - Google Patents

Abstract

PURPOSE:To enable to recover muddy water from a remote liquid supply source, by extending a water drawing pipe into the liquid supply source, and extending a discharge port of a submergible pump to the outside of a separation tank. CONSTITUTION:A hose is connected to a water drawing pipe 3 and it is extended into a liquid supply source 4. Similarly, a discharge hose is connected to a discharge port 2b of a submergible pump 2 and extended to a place where waste matter is to be dumped. Through operation of a vacuum pump 1, the inside of a separation tank T2 and the pipe 3 is evacuated, so that a mixture of sand, water, air, etc. is drawn into the separation tank T2 from the liquid supply source 4. In the separation tank T2, muddy water is discharged to the outside of the separation tank T2 while preventing deposition of solid matter like mud by the function of the submergible pump 2 having agitating blades 11, while gases are carried into a gas collecting tank T3 from an upper portion of the separation tank T2. Further, sand, sludge, etc. are carried to a place where they are to be dumped.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a muddy @valve fitting Nvc, which is particularly suitable for treating muddy water in segment inverts in shield construction methods.

Conventionally, using the shield construction method (segment invert mud water treatment), the pump was moved directly to the work site, and after collection, it was transported outside the mine using a trolley. Work efficiency is poor because it is performed as a separate separate work, and in addition, in VC cleaning work such as treatment of floor water, tank bottom water, settled earth, sludge in side gutters, etc., C1f' [On-site space constraints] However, there are many problems, such as a large labor burden.

In order to solve the above-mentioned problems, in the device of the present invention, a1
It has a cooling water tank connected to a vacuum pump, a separation tank connected to a submersible pump with the same device, and an air tank connected to the empty pump and separation tank, which penetrates the inside of the cooling water tank. The beginning of the water suction pipe is led out to the liquid supply source, the terminal end is opened into the separation tank, and the lead-out end of the relay pipe led out from the upper part of the separation tank is opened into the air collection tank with a large calyx opening. Then, the inlet of the vacuum pump is avoided from communicating with the relay pipe IC through the air collecting tank, the VC exhaust port is opened above the water surface in the cooling water tank, and the water inlet is introduced below the water surface in the cooling water tank. The suction port of the submersible pump is opened into the separation tank, the discharge port is opened to the outside of the separation tank, and the pump shaft is inserted through the suction port. 1 lower extension δ
At the same time, a stirring blade is attached to the lower extension part of the first part, and the inside of the separation tank and the water suction pipe are turned into a vertical line by the driving VC of the vacuum pump, and the muddy water from the supply source flows into the separation tank. The effect of the submersible pump, which separates gas and liquid by gravity VC and grows the stirring blades, prevents the sedimentation of mud and other hard objects and carvings, while discharging the muddy water out of the separation tank.Also, the gas a separated from the muddy water The vacuum pump is cooled by suctioning it from the upper part of the separation tank to the intake port of the vacuum pump and circulating it back into the cooling water tank from the exhaust port, and only the gas separated from the cooling water is discharged below the water surface. ``It is configured to discharge the cooling water from the air passage to the outside of the cooling water tank.

In the drawings of the embodiment, Tlf;I vacuum pump I VC
A cooling water tank, a separation tank containing a TjJ2 submersible pump 2, a T3rI vacuum pump 1, and an air collecting tank connected to a separation tank T2vC are connected.

The vacuum pump 1r is connected to the cooling water tank T1, and its intake port 1a is connected to the upper VC of the air collecting tank T3, and the exhaust port 1b is opened below the water surface in the cooling water tank T1, and the water intake IC is opened. It can be attached to the upper blade of the cooling water tank T1 with an introduction opening below the water surface in the cooling water tank T1. For example, when the submersible pump 2rc installed in the separation tank T2 has its suction port 2a opened to the upper blade inside the separation tank 2 and its discharge port 2b opened to the outside of the separation tank T2, the separation tank T2 can be opened and closed. It is attached to the inner surface of the door 7. The pump shaft a1 with an impeller fitted in the pump vortex chamber is further extended by one point below the suction port 2a, and a stirring blade 11 is attached to the lower extension part 10.

Water absorption body that penetrated inside the cooling water tank T1 8 rl s
It is privately installed with its starting end 8a leading out to the liquid source 4 and its terminal end 3b extending into the separation tank 2. 6r [With the exhaust path led out from the water surface in the cooling water tank T1 to the outside of the cooling water tank T1, the cooling water tank T
It communicates with the exhaust port 1b of the vacuum pump 1 above the water surface in the vacuum pump 1. 6r The relay pipe led out from the upper blade part of the separation tank T2 is connected to the upper part of the air collection tank T3 at its lead-out end a to form a VC so as to communicate with the intake port la of the vacuum pump 1. . 8ala Water inlet for injecting VC cooling water in cooling water tank T1, 8b
The water inlets 8a and gb for injecting priming water into the σ vacuum pump 1 are VC so that they can be opened and closed by operating valves, respectively. In addition, El to E4r [within the separation tank channel 2, an electrode type water level detector equipped with VC is surrounded on the circumferential side by a breakwater pipe 9vc, and for example, the liquid level in the separation tank channel 2 is detected by the water level detector E2. When the liquid level rises to the tip of the electrode rod, the submersible pump 2 is activated, and when the liquid level in the separation tank chamber 2 rises to the tip of the electrode rod of the water level detector E1, the vacuum pump 1 stops, and the liquid level in the separation tank chamber 2 is detected. The vacuum pump 1 is electrically connected to perform automatic operation control in which the vacuum pump 1 is driven when the electrode rod of the device E3 is lowered to the tip.

When using the device of the present invention, open the valve VCj[, open the water inlets 8a and 8b, respectively, inject cooling water into the cooling water tank T1, and inject priming water into the vacuum pump 1. Then, the valves are closed to close the water inlets 8a and 8b, respectively.

To explain the case where the device of the present invention is used for collecting muddy water from the liquid source 4 and discharging it to a predetermined disposal site, the starting end 8 a of the water suction pipe 8 is connected to the opening of the VC water suction hose. While introducing the VC into the predetermined supply liquid #4 with the tip, connect the discharge port 2b of the submersible pump 2 with the VC discharge hose and extend the opening f@ to the predetermined disposal location. Drive the vacuum pump 1. The inside of the separation tank 2 and the water suction pipe 8 are driven by the vacuum pump 1.
A vacuum is created inside, and a mixture of earth and sand, water, air, etc. is collected from the liquid supply source 4 into the separating tank chamber 2. Separation tank T2
, when the water level in the submersible pump 2 rises to a predetermined level, the submersible pump 2 is driven by manual operation of the switch or by switching the circuit t# by the C water level detector E2. When the separation action of gas and liquid occurs due to gravity in the separation tank 2 that has collected the muddy water, the action of the submersible pump 2 having VC1 stirring blades 11 prevents the sedimentation of solids such as mud while separating the muddy water into the tank. 2, and the relay pipe 6 from above the gas a separation tank T2 that is separated from the muddy water
It moves into the air collection tank T3, and is discharged to a predetermined disposal site by the action of the submersible pump 2 together with a liquid such as earth and sand and sludge. If the amount of water pumped in the separation tank 2 becomes larger than the amount of water discharged, and the water level rises abnormally VC, creating a risk of muddy water flowing into the vacuum pump VC, manually operate the switch VC, or the water level detector E Automatic switching of the circuit by IVC stops the vacuum pump 1 to prevent the risk of muddy water inflowing. Submersible pump 2 continues draining water, and separation tank 1
When the water level within °2 falls, the switch hand # [by the automatic switching of the circuit by σ water level detector E3,
Start driving the vacuum pump IIA again. In this way, it is possible to operate and stop the vacuum pump l and the submersible pump 2 at appropriate times and maintain the water level in the separation tank 12 at an appropriate level by operating the MIJ switch or by switching the VC on the line 11al. Demeru. However, in order to perform stable VC without interruption in collecting and discharging muddy water, the vacuum pump 1 is automatically stopped at a critical water level to protect it from dirty water, and the 11C drive is automatically restarted when the water level drops. Submersible pump 2 has continuous VC regardless of the water level change.
When it is necessary to stop the special VC after driving the V
It is desirable to have a mode in which the CPI can be stopped by manual operation of the CPI switch at appropriate times.

The gas 01 separated from the muddy water in the VC in the separation tank 2 is sucked from the upper part of the separation tank T2 to the 1 open air port 1a of the vacuum pump 1, and is sucked from the water intake IC. The vacuum pump 1 is cooled in the process of flowing back into the cooling water tank 1'1 from the exhaust port 1b together with the cooled water, and only the gas separated from the cooling water flows from the exhaust path 5 above the water surface into the cooling water tank T1. The cooling water that is discharged outside and recirculated in the cooling water tank T1 is sucked in again from the water inlet IC to cool the vacuum pump 1.

As mentioned above, in the device of the present invention, the starting end 8a of the water suction pipe 8 is opened to lead out to the liquid supply source 4, and the discharge port 2b of the submersible pump 2 is opened to lead out to the outside of the separation tank 2. The main body part of the invention device a can collect muddy water from a remote supply source 4 by simply extending the water suction hose without having to move the VC while it is installed in a fixed location, and it does not enter narrow tunnels or general bombs. Water absorption work can be carried out even in such places, which has the advantage of providing a wide space around the work, resulting in good work efficiency. In addition, muddy water can be discharged to a remote disposal site simply by extending the discharge hose, and this discharge work is performed consistently and continuously with the above-mentioned collection work, so the work time is significantly reduced. This saves time and eliminates the trouble of using a trolley to transport the muddy water after collection, which is extremely efficient. In this way, the advantage is that work that conventionally relied on a large number of people can be carried out by a very small number of people in a short period of time. In addition, a cooling effect is generated by the cooling water circulation V at the same time as the muddy water recovery operation by the vacuum pump 1 VC, and this combined with the fact that the accumulation of VC mud at the bottom of the tank due to the disturbance action by the disturbance vane 11VC can be prevented, This allows for continuous operation without any problems.

[Brief explanation of the drawing]

FIG. 1A is a vertical sectional side view of the main part of the device of the present invention, and FIG. 2C is an explanatory view showing an example of use of the device of the present invention. T1...Cooling water tank, T2...Separation tank, T3
...Gathering tank, l...vacuum pump, la...intake port, lb...exhaust port, lo...li water port, 2...
・Submersible pump, 2a...suction port, 2b...discharge port,
3... Water suction pipe, 3a... Starting end, 3b... Terminating end, 4... Liquid supply source, 5... Exhaust path, 6... Relay pipe,
10... 1 lower extension of the pump shaft, 11... Disturber vane. Patent applicant: Tsurumi Seisakusho Co., Ltd.

Claims (1)

[Claims] Cooling water tank (T1) connected to vacuum pump (IT VC)
) and a separation tank (1 “
2), and has a penetrating type fc inside the cooling water tank (T1).
The starting end (8a) of the water suction pipe (31) is led out to the supply liquid source (4), the terminal end (8b) is opened into the separation tank (T2), and the inlet port 0 of the vacuum pump (1) is opened. When connected to the upper part of the storage tank (T2), the VC exhaust port (
1b) is opened above the water surface in the cooling water tank (T1), and the water intake port (IC) is introduced below the water surface of the cooling water tank (T1), opened, and then the VC flows from above the water surface to the outside of the cooling water tank (T1). A submersible pump (2) is formed to form an exhaust path (5) to be led out.
)'s suction port (2a) is opened into the separation tank (T2), and the discharge port (2b) is led out to the outside of the separation tank (T2), and the pump shaft is extended one downward from the suction port (2a). Its guiding extension flO) vc disturbance vane (1υ
A muddy water suction and drainage device equipped with.