JPH07103200A - Solid-liquid sucking and pumping device and its usage - Google Patents

Abstract

PURPOSE:To provide a solid-liquid sucking and pumping device simply operated and its usage which enable the consistent sucking and pumping of sludge or sediment of high specific gravity and high viscosity and enable effective functioning even under a high suction head condition. CONSTITUTION:A solid-liquid suction inlet 8 open into a supply liquid source 6, and an air supply pipe 9 extended from an air compression device 1b are joined so that a mixing chamber is formed. A lifting pipe 11 led down from a solid-liquid collection tank 2 made into negative pressure by operation of vacuum generation device 1a opens into the mixing chamber 7. Then opening/ closing mechanisms 10a, 10b are provided in the solid-liquid suction inlet 8 and the air supply pie 9, respectively. Accordingly, solid/liquid in the supply liquid source 6 is collected intermittently into the solid-liquid collection tank 2 by operation of the vacuum generation device 1a and the air compression device 1b and opening/closing of the opening/closing mechanisms 10a, 10b.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for sucking and pumping a solid-liquid mixture using both a vacuum suction method and a pressurized air pressure feeding method, and a method of using the same. The present invention relates to a suction pumping apparatus and a method of using the same for a solid-liquid mixture having a low water content under the conditions of underground construction and high suction lift conditions, such as drainage and drainage from a vertical shaft, and sediment recovery in a pump sand basin. 2. Description of the Related Art An apparatus for pumping earth and sand mixed in water using an underwater sand pump has existed for a long time, but mechanical abrasion occurs because it has a movable part inside. Often, or blockage due to entanglement occurs. In addition, the flow velocity in the pumping pipeline must be high so that the slurry does not settle at all times, and it is generally set to 3 m / s or more under the condition of fine sand. Regardless, a large amount of water is required, and large-scale equipment is required for post-treatment of the used water. The technical idea of suctioning and pumping earth and sand contained in water by using a vacuum generator is also known, but in this case, the suction head is conventionally 10 m even under absolute vacuum conditions. It is set to (760 mmHg), and if the suction lift is high, the vacuum suction effect will be reduced, and sludge and sand with high specific gravity and viscosity cannot be pumped. Also,
It is necessary to maintain a constant wind speed in the lifting pipeline,
A separate power is required to constantly supply air to the suction tip, which makes the structure complicated. Furthermore, since it is necessary to finely adjust the amount of supplied air depending on the transfer condition and the pressure condition in the lifting pipeline, the control operation becomes complicated. There is also a solid-liquid transfer device using a pressurized air pressure feed system utilizing an air compression device, but the pumping device itself of this system does not have a function of guiding the object to be pumped into the pumping pipe, Since it is necessary to separately install a mechanical device on the ground floor to introduce the object to be lifted, it is difficult to secure the installation space on the ground floor, and therefore it is not suitable for the lifting of earth and sand in underground construction. It is an object of the present invention to consistently suck and pump sludge and earth and sand having a high specific gravity and viscosity without causing mechanical wear of moving parts and trouble such as entanglement. To provide a solid-liquid suction pumping device and a method of using the solid-liquid suction pumping device, which requires less installation space on the ground floor, functions effectively even under underground construction and high suction lift conditions, and has a simple structure and simple operation. is there. In the solid-liquid suction pumping apparatus according to the present invention, the solid-liquid suction port opened in the liquid supply source is joined with the air supply pipe extending from the air compression apparatus to form a mixing chamber. None, open the pumping pipe introduced from the solid-liquid recovery tank, which is brought to a negative pressure by the operation of the vacuum generator, into the mixing chamber, and attach the opening / closing mechanism to the solid-liquid suction port and the air supply pipe, respectively. . When the solid-liquid suction / lifting device of the present invention is used, the solid-liquid recovery is performed by driving the vacuum generator and the air compressor and closing the opening / closing mechanism of the solid-liquid suction port and the air supply pipe. A negative pressure is maintained in the pumping pipe and the mixing chamber together with the tank, and then the opening and closing mechanism of the solid-liquid suction port is opened to suck a certain amount of solid liquid in the liquid supply source from the solid-liquid suction port into the pumping pipe and the mixing chamber. After that, by closing the opening / closing mechanism of the solid-liquid suction port and opening the opening / closing mechanism of the air supply pipe, the air pressure-fed from the air supply pipe is mixed with the solid liquid in the lifting pipe and the mixing chamber. The liquid source is then pumped into the solid-liquid recovery tank and the opening / closing operation of the opening / closing mechanism is repeated, so that the liquid source solid solution is successively and intermittently pumped into the solid-liquid recovery tank. Embodiments will be described below with reference to the drawings of the embodiments. Reference numeral 1a is a vacuum generator using a water-sealed vacuum pump or blower, 1b is an air compressor, 2 is a solid-liquid recovery tank whose negative pressure is set by the operation of the vacuum generator 1a, and 3 is a vacuum generator. 1a and the solid-liquid recovery tank 2 are interposed between the liquid recovery tank, 4 is a liquid passage pipe for connecting the solid-liquid recovery tank 2 and the liquid recovery tank 3, 5 is a vacuum pump in the vacuum generator 1a Alternatively, it is a ventilation pipe in which the intake port of the blower is connected to the upper part of the liquid recovery tank 3. 6
Is a liquid supply source in which the solid-liquid mixture to be pumped is present, 7 is a solid-liquid suction port 8 opened in the liquid supply source 6, and an air supply pipe 9 extended from the air compression device 1b. A mixing chamber 10a, which is an opening / closing mechanism attached to the solid-liquid suction port 8;
Reference numeral 10b is an opening / closing mechanism attached to the air supply pipe 9, 11 is a pumping pipe guided from the solid-liquid recovery tank 2, and its guiding tip 12 is introduced and opened into the mixing chamber 7. Reference numeral 13 is a submersible pump installed in the liquid recovery tank 3, 14 is a liquid return pipe led out from the discharge port of the submersible pump 13, and the leading end portion 15 thereof is directed downward to the inside of the liquid supply source 6. The opening is open. By operating the vacuum generator 1a and the air compressor 1b and closing the opening / closing mechanisms 10a and 10b for the solid-liquid suction port 8 and the air supply pipe 9 in the pipeline structure shown in FIG. The inside of the pumping pipe 11 and the mixing chamber 7 together with the recovery tank 2 is in a negative pressure state, and the air is accumulated in the air feeding pipe 9. Then, the opening / closing mechanism 10a of the solid-liquid suction port 8 is opened to suck a certain amount of water and earth and sand in the liquid supply source 6 from the solid-liquid suction port 8 into the pumping pipe 11 and the mixing chamber 7,
When the opening / closing mechanism 10a of the solid-liquid suction port 8 is closed and the opening / closing mechanism 10b of the air supply pipe 9 is opened, the air compressed in the air supply pipe 9 is rapidly transferred into the lifting pipe 11 and the mixing chamber 7. Due to the state of being pumped and expanded, and mixed with the solid liquid in the pumping pipe 11 and the mixing chamber 7, the apparent specific gravity of the solid is reduced,
The suction action of the vacuum generating device 1a and the pressurizing action of the air compressing device 1b are combined to make the pumping pipe 11 and the mixing chamber 7
The water and earth and sand inside are pumped and collected in the solid-liquid recovery tank 2. By repeating the above operation at appropriate time intervals adjusted by the suction conditions, the water and earth and sand in the liquid supply source 6 are intermittently pumped and sequentially recovered in the solid-liquid recovery tank 2. It is. Then, the liquid component of the solid liquid recovered in the solid liquid recovery tank 2 is transferred to the liquid content recovery tank 3, and the liquid return pipe 14 is operated by the operation of the submersible pump 13.
Although it is reduced to the inside of the liquid supply source 6 through the flow-through, when the liquid component flows out from the outlet tip portion 15, the mixing and stirring action in the liquid supply source 6 is caused to generate the solid component from the solid-liquid suction port 8. It becomes easier to inhale. Further, the solids remaining in the solid-liquid recovery tank 2 are discharged from the discharge port at the bottom of the bottom at a proper time, loaded on a separate carrier (not shown), and transported to a predetermined disposal site. According to the present invention, suction and pumping of sludge and earth and sand having a high specific gravity and viscosity can be carried out under a high suction lift condition without causing mechanical wear and trouble such as entanglement. It is also possible to provide a solid-liquid suction / lifting device and a method of using the same, which is effectively performed, and has a simple structure and simple operation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a pipeline configuration diagram of a solid-liquid suction pumping device of the present invention. FIG. 2 is a vertical cross-sectional side view of a main part of the solid-liquid suction lifting device of the present invention. [Explanation of Codes] 1a Vacuum generator 1b Air compressor 2 Solid-liquid recovery tank 6 Liquid supply source 7 Mixing chamber 8 Solid-liquid suction port 9 Air supply pipe 10a Opening / closing mechanism 10b Opening / closing mechanism 11 Lifting pipe

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Keiji Ishii             4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka             Ceremony company Tsurumi Works (72) Inventor Saburo Shimono             4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka             Ceremony company Tsurumi Works (72) Inventor Takeyuki Nishimura             4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka             Ceremony company Tsurumi Works (72) Inventor Masahiro Kobayashi             4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka             Ceremony company Tsurumi Works (72) Inventor Toshimitsu Ikeuchi             4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka             Ceremony company Tsurumi Works (72) Inventor Noboru Kouoka             4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka             Ceremony company Tsurumi Works (72) Inventor Yu Kubo             4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka             Ceremony company Tsurumi Works (72) Inventor Hideki Yonemura             4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka             Ceremony company Tsurumi Works

Claims (1)

Claims: 1. A solid-liquid inlet (8) opened in a liquid supply source (6) and an air supply pipe (9) extending from an air compression device (1b) are merged. Into a mixing chamber (7), and a pumping pipe (11) led from a solid-liquid recovery tank (2), which is made a negative pressure by the operation of a vacuum generator (1a), into the mixing chamber (7). A solid-liquid suction / lifting device which is opened and is provided with opening / closing mechanisms (10a) (10b) at the solid-liquid suction port (8) and the air supply pipe (9), respectively. [Claim 2] A vacuum generator (1a) and an air compressor (1b) in the solid-liquid suction pumping device according to the first paragraph are driven to open and close the solid-liquid suction port (8) and the air supply pipe (9). By closing each of (10a) and (10b), the solid-liquid recovery tank (2) and the pumping pipe (11) and the mixing chamber (7) are kept in a negative pressure state, and then the solid-liquid suction port (8). After opening / closing the opening / closing mechanism (10a) of the liquid source (6) to suck a certain amount of the solid liquid from the liquid supply source (6) into the pumping pipe (11) and the mixing chamber (7), Solid-liquid suction port (8)
Close the open / close mechanism (10a) of the air supply pipe (9)
By opening and closing the opening / closing mechanism (10b), the air pressure-fed from the air supply pipe (9) is mixed with the solid liquid in the lifting pipe (11) and the mixing chamber (7) to recover the solid-liquid recovery tank (2). ), And by repeatedly opening and closing the opening / closing mechanisms (10a) and (10b), the solid-liquid of the liquid supply source (6) is sequentially and intermittently pumped into the solid-liquid recovery tank (2). A method of using a solid-liquid suction pumping device, characterized by: