JP3883600B2 - Solid-liquid recovery and unloading device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for recovering a solid-liquid mixture such as mud by a suction method using a decompression device such as a vacuum pump and transporting it to a predetermined disposal site by a pressure feeding method using an air compressor.
[0002]
[Prior art and its problems]
Conventionally, the technical idea of using a decompression device such as a vacuum pump is known for collecting a solid-liquid mixture. And, as represented by a vacuum vehicle, the mainstream is to stop driving the decompression device when the inside of the collection tank is full and open the tank hatch to take out the collected material. However, with this method, the collected material cannot be continuously sucked, and the suction operation must be interrupted when the collected material is discharged. The collected material stays in the pipeline while the suction operation is interrupted, and the suction operation is resumed. Occasionally, blockage may occur.
[0003]
In addition, as a means for transporting the collected solid-liquid mixture, the object to be transported that has been put into the hopper is guided to the pressure feeding line by the screw conveyor, and the object to be transported is transported to a predetermined disposal location by the air pressure from the air compressor. It is also widely performed to discharge from the terminal discharge port of the pressure feeding line. However, even if this transport mechanism is combined with the above-described recovery mechanism, the above-mentioned drawbacks of the recovery mechanism are not compensated, and the solid-liquid recovery operation must be interrupted while the recovered material is being carried out. Therefore, it is inevitable that the solid-liquid collecting / carrying-out device is likely to block the pipe.
[0004]
Furthermore, since the solid-liquid mixture recovered by the solid-liquid recovery / conveying device configured as described above is discharged at the same concentration, it is inconvenient that it must be post-processed separately by the solid-liquid separation device. There is.
[0005]
OBJECT OF THE INVENTION
The object of the present invention is to perform the solid-liquid recovery operation continuously without the need to stop the decompression device even when the recovered material is being carried out so that the recovered material does not stay in the pipeline and become blocked. It is another object of the present invention to provide a solid / liquid recovery / conveying device capable of transporting the recovered solid / liquid as a solid having a low water content so that no post-processing by a separate solid / liquid separation device is required.
[0006]
[Structure of the invention]
In the solid-liquid recovery / conveying device according to the present invention, in the solid-liquid recovery / conveying device, the solid-liquid mixture is sucked into the recovery tank through the suction pipe by driving the decompression device and is discharged to the outside by driving the air compressor. The upper and lower chambers are connected to each other via a valve mechanism, and the upper chamber is a flow chamber. The lower portion of the flow chamber is formed as a funnel-shaped inclined surface, and the bottom is centrally connected to the storage chamber of the lower chamber. established through channels annexed sand sensor in the reservoir chamber to the annexed then co valve mechanism to flow hole end surface, toward the solid-liquid sources to derive the suction pipe which opens from distribution chamber, and a recovery tank A liquid component recovery tank is interposed between the pressure reducing device and a level sensor is provided in the liquid component recovery tank. The upper part of the distribution chamber and the detected water level of the level sensor in the liquid component recovery tank are above The first suction And a portion above the detection position of the sand sensor in the storage chamber and a portion above the detection level of the level sensor in the liquid collection tank are connected by a second suction pipe, and the suction pipe A valve for opening and closing the conduction path is attached, and the suction port of the decompression device is made to conduct upward from the detection level of the level sensor in the liquid collection tank, and passes through the first suction pipe and the second suction pipe. The pressure reducing pipe is constructed, and the discharge port of the pump whose suction port is opened to the lower part in the liquid collection tank is connected to the storage chamber by a water pipe, and a valve for opening and closing the conduction path is provided in the water pipe. A discharge port is opened at the lower part of the storage chamber, and a pressure feed line is led out from the discharge port via a valve mechanism, and an air inlet is opened in the direction of the pressure feed line, and the air compressor Discharge port and air inlet Made conductive by trachea to said transmission trachea was attached a valve-guide channel opening and closing.
[0007]
【Example】
Hereinafter, description will be made with reference to the drawings of the embodiments.
[0008]
Reference numeral 1 denotes a decompression device using a water-sealed vacuum pump or an exhaust blower, and 2 denotes a recovery tank that is brought to a negative pressure by driving the decompression device 1, and includes a circulation chamber 2a located above and a reservoir located below. The flow chamber 2a is formed with a funnel-shaped inclined surface 3 at its lower portion, a flow hole 4a is formed at the center of the bottom, and the storage chamber 2b has a discharge port 4b at its lower portion. Is opened, and a sand sensor 5 is attached above the opening of the discharge port 4b. 6a is a valve mechanism attached to the flow hole 4a, 6b is a valve mechanism attached to the discharge port 4b, and a normally open lip valve that closes in response to external pressure is suitable. The valve mechanism 6a is a flow chamber. When the inside of 2a and the storage chamber 2b are in a negative pressure state, the open state is maintained by its own elasticity, and when the pressure in the storage chamber 2b is higher than the pressure in the flow chamber 2a, the differential pressure When the valve mechanism 6b is closed, the valve mechanism 6b is closed due to a pressure difference from the atmospheric pressure when the inside of the flow chamber 2a and the storage chamber 2b are in a negative pressure state, and the pressure inside the storage chamber 2b is positive. Although it is restored to the open state by its own elasticity, it is not necessarily required to be such a lip valve, and it may be mechanically or electrically opened and closed. Reference numeral 7 denotes a suction pipe led out from the circulation chamber 2a, and opens the leading end portion 7e toward the solid-liquid supply source 8. 9 is a liquid recovery tank interposed between the recovery tank 2 and the decompression device 1, 10 is a level sensor attached to the liquid recovery tank 9, and 11 is a suction port opened into the liquid recovery tank 9. An internal or external pump. 12a is a first suction pipe that connects the upper part in the circulation chamber 2a and the upper part of the liquid component recovery tank 9 above the detected water level of the level sensor 10, and 12b is the sand sensor 5 in the storage chamber 2b. A second suction pipe for connecting the upper part from the detection position and the upper part from the detection water level of the level sensor 10 in the liquid component recovery tank 9, and 13 is a conduction path opening / closing attached to the second suction pipe 12b. It is a valve for. Then, the suction port of the decompression device 1 is connected to a portion above the detection water level of the level sensor 10 in the liquid recovery tank 9, and the decompression conduit passing through the first suction tube 12a and the second suction tube 12b is provided. Constitute. The discharge port of the pump 11 is branched in two directions, one of which is connected to the upper part of the storage chamber 2b with respect to the position where the sand sensor 5 is provided by the water supply pipe 14a, and a valve 15a for opening and closing the conduction path is provided. The other is led to a predetermined drainage place or solid-liquid supply source 8 by a water supply pipe 14b, and a conduction path opening / closing valve 15b is provided. Reference numeral 16 denotes a pressure feeding line led out from the discharge port 4b through the valve mechanism 6b, and 17 denotes an air inlet opened in the lower part of the storage chamber 2b toward the leading direction of the pressure feeding line 16. The discharge port 18 is branched in two directions, one of which is connected to the air supply port 17 by an air supply pipe 19a and is provided with a conduction opening / closing valve 20a, and the other is an outlet start end of the pressure supply line 16 by an air supply pipe 19b. And a conduction path opening / closing valve 20b is provided.
[0009]
[Action]
When the conduction path opening / closing valve 13 of the second suction pipe 12b and the conduction path opening / closing valve 15a of the water supply pipe 14a are closed, and the leading end portion 7e of the suction pipe 7 is open to the solid-liquid supply source 8. When the decompression device 1 is driven, the inside of the flow chamber 2a, the storage chamber 2b and the liquid collection tank 9 are depressurized, and the solid liquid is sucked into the flow chamber 2a. At this time, the valve mechanism 6b The discharge port 4b is closed by the depressurizing action, and the valve chamber 6a is opened to open the flow port 4a because the inside of the flow chamber 2a and the storage chamber 2b have the same pressure. The solid liquid sucked into the circulation chamber 2a flows down into the storage chamber 2b through the circulation port 4a, but is separated by a swirling flow in the circulation chamber 2a, and the solid is settled in the storage chamber 2b and has a specific gravity. The small liquid is moved back to the circulation port 4a and into the circulation chamber 2a. Will be, it flows through the first suction tube 12a with separated liquid fraction in the distribution chamber 2a to the liquid fraction recovery tank 9. Even if the level sensor 10 detects the starting water level of the pump 11, the valve 15 a is not opened while the sand sensor 5 does not detect it, the valve 15 b is opened, and the recovered liquid in the liquid recovery tank 9 is sent. It is discharged to a predetermined drainage place by the water pipe 14b or reduced to the solid-liquid supply source 8.
[0010]
The level sensor 10 in the liquid recovery tank 9 detects the starting water level of the pump 11, and the concentration of solid liquid in the storage chamber 2b is increased, so that the valve 20a of the air inlet 17 is opened by the detection action of the sand sensor 5. The storage tank 2b is agitated and further pressurized by the compressed air from the air compressor 18, and the valve mechanism 6a of the flow port 4a is closed and the valve mechanism 6b of the discharge port 4b is opened. Next, when the valve 15a of the water supply pipe 14a is opened, pressure water is sent into the storage chamber 2b, and together with the pressure water, the accumulated solids are sent into the pressure feed line 16 through the discharge port 4b. Then, it is transported to a predetermined disposal place and discharged from the terminal discharge port 16e.
[0011]
The solid-liquid recovery operation into the circulation chamber 2a is continued even while the solid content is being carried out. Then, the valve 15a of the water supply pipe 14a and the valve 20a of the air inlet 17 are closed, and the valve 13 of the second intake pipe 12b is opened, so that the inside of the circulation chamber 2a, the storage chamber 2b, and the liquid collection tank 9 are at the same pressure. Then, the valve mechanism 6a is opened, and the recovered solid-liquid in the flow chamber 2a flows down into the storage chamber 2b while causing a separation action in a swirling flow through the flow port 4a. The solid liquid or the solid content having a low water content that is concentrated by following the above-described process is discharged from the terminal discharge port 16e of the pressure feed line 16.
[0012]
If the pressure water is supplied for a while after the solid content in the storage chamber 2b is discharged, the cleaning operation inside the storage chamber 2b and the valve mechanism 6b in the discharge port 4b is automatically performed. . Further, with respect to the compressed air supplied from the air compressor 18, when the valve 20 a to the air inlet 17 is closed, the valve 20 b of the pressure feeding line 16 is always opened to be supplied to the pressure feeding line 16, thereby providing the inside of the line. It is desirable to make the material dry.
[0013]
【The invention's effect】
According to the solid-liquid recovery and carry-out device of the present invention, it is not necessary to stop the decompression device even during the recovery of the recovered product, and the solid-liquid recovery operation is continuously performed. There is no fear of coming. Moreover, since the recovered solid and liquid can be carried out as a solid having a low water content ratio, there is an advantage that a separate post-treatment by a solid and liquid separation device is not required.
[Brief description of the drawings]
FIG. 1 is a pipe line configuration diagram of a solid-liquid recovery and carry-out device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pressure-reducing device 2 Recovery tank 2a Distribution room 2b Storage room
4a Flow hole 4b Discharge port 5 Sand sensor 6a Valve mechanism 6b Valve mechanism 7 Suction pipe 8 Solid liquid supply source 9 Liquid recovery tank 10 Level sensor 11 Pump 12a First suction pipe 12b Second suction pipe 13 Valve 14a Water pipe 15a Valve 16 Pressure feed line 17 Air inlet 18 Air compressor 19a Air feed pipe 20a Valve

Claims (1)

In a solid-liquid recovery / unloading device that sucks the solid-liquid mixture into the recovery tank through the suction pipe by driving the decompression device and carries it out to the outside by driving the air compressor, the upper and lower sides where the recovery tank is conducted through the valve mechanism As a two-chamber structure, the upper chamber is a flow chamber , the lower portion of the flow chamber is formed as a funnel-shaped inclined surface, and a flow hole is formed in the center of the bottom to communicate with the storage chamber of the lower chamber. mechanism annexed sand sensor in the reservoir chamber to the annexed then share a, toward the solid-liquid sources to derive the suction pipe which opens from the distribution chamber, the liquid component recovery tank between the recovery tank and the decompressor A level sensor is provided in the liquid recovery tank, and the upper part in the circulation chamber and the upper part of the liquid recovery tank above the level detected by the level sensor are connected by the first suction pipe. In the storage room A portion above the detection position of the sand sensor and a portion above the detection level of the level sensor in the liquid recovery tank are connected by a second suction pipe, and a valve for opening and closing the conduction path is provided in the suction pipe. A decompression line is formed through the first suction pipe and the second suction pipe by connecting the suction port of the decompression device to a portion above the detection level of the level sensor in the liquid recovery tank. The discharge port of the pump with the suction port opened to the lower part in the liquid collection tank is connected to the storage chamber by a water supply pipe, and a valve for opening and closing the conduction path is attached to the water supply pipe. A discharge port in the section, and a pressure feeding line is led out from the outlet through a valve mechanism, and an air inlet is opened in the direction of the pressure feeding line, and the discharge port of the air compressor and the above air inlet Are connected to each other by an air pipe. Solid-liquid recovery unloading device, characterized in that annexed a valve passage opening.

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