JPH06147197A - Solid liquid suction and lifting apparatus and usage therefor - Google Patents

Abstract

PURPOSE:To effectively function a solid-liquid suction and lifting apparatus even under a high suction and lifting conditions and simplify the operation of the apparatus by sucking and lifting sludge and sediment having a high specific gravity and viscosity consistently. CONSTITUTION:A solid-liquid suction port 8 opened to the interior of a liquid supply source 6 and an air feed pipe 9 extended from an air compressor 1b are joined to form a mixing chamber 7, a lifting pipe 11 guided downward from a solid-liquid recovery tank 2, the pressure of which is caused to be negative by the operation of a vacuum generator 1a is opened to the interior of the mixing chamber 7, and switching mechanisms 10a, 10b, 10c are respectively attached to the solid-liquid suction port 8, the air feed pipe 9 and a vent hole 5' opened to the air from the vacuum generator 1a. The vacuum generator 1a and an air compressor 1b are driven to open and close the switching mechanisms 10a, 10b, 10c, whereby the solid-liquid in the liquid supply source 6 is intermittently recovered in the solid-liquid recovery tank 2.

Description

Detailed Description of the Invention

[0001]

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, for example, drainage and drainage from a vertical shaft in shield work, and a pump. The present invention relates to a suction and pumping device for a solid-liquid mixture having a low water content ratio and a method of using the same under the conditions of underground construction and high suction pumping conditions such as sediment collection in a sand basin.

[0002]

2. Description of the Related Art A device for pumping earth and sand mixed in water by using a submersible sand pump has existed for a long time, but since it has a movable part inside, mechanical abrasion occurs, or Entanglement often results in obstruction. 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.

[0005]

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. It is an object of the present invention to provide a solid-liquid suction pumping device and a method of using the solid-liquid suction pumping device, which requires a small installation space on the ground floor, functions effectively even under the conditions of underground construction and high suction pumping conditions, and has a simple structure and simple operation.

[0006]

In the solid-liquid suction pumping apparatus according to the present invention, a solid-liquid suction port opened in the liquid supply source is joined with an air feeding pipe extending from the air compression apparatus to form a mixing chamber, and a vacuum is formed. Open the pumping pipe introduced into the mixing chamber from the solid-liquid recovery tank that is brought to a negative pressure by the operation of the generator, attach an opening / closing mechanism to each of the solid-liquid suction port and the air supply pipe, and generate the vacuum. A vent is opened from the device to the atmosphere, and an opening / closing mechanism is attached to the vent.

When the solid-liquid suction / lifting device of the present invention is used, the vacuum generator and the air compressor are driven to open and close the solid-liquid suction port and the air supply pipe opening / closing mechanism, respectively, and the vent opening / closing mechanism. By closing the
Put negative pressure in the pump and mixing chamber together with the solid-liquid recovery tank, and then open the opening and closing mechanism of the solid-liquid inlet to transfer the solid-liquid in the liquid source from the solid-liquid inlet into the pump and mixing chamber. After a certain amount of air is sucked, the opening / closing mechanism of the solid-liquid inlet is closed and the opening / closing mechanism of the air supply pipe is opened to mix the air pumped from the air supply pipe with the solid liquid in the lifting pipe and the mixing chamber. Then, the opening / closing mechanism of the vent is opened, and the solid-liquid in the pumping pipe and the mixing chamber is pumped into the solid-liquid recovery tank by the pressure-fed air flow from the air supply pipe, and the opening / closing operation of the opening / closing mechanism is repeated. By doing so, the solid-liquid of the liquid supply source is sequentially and intermittently pumped into the solid-liquid recovery tank.

[0008]

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. A liquid recovery tank, which is interposed between the liquid recovery tank 2 and the liquid recovery tank 1, a liquid passage tube 4 for connecting the liquid recovery tank 2 and the liquid recovery tank 3 to each other, and a vacuum pump 5 in the vacuum generator 1a. Alternatively, a ventilation pipe 5'which connects the intake port of the blower to the upper part of the liquid recovery tank 3 is a ventilation port branched from the ventilation pipe 5 and opened to the atmosphere. 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. And 10a are an opening / closing mechanism attached to the solid-liquid suction port 8, 10b is an opening / closing mechanism attached to the air supply pipe 9, and 10c is an opening / closing mechanism attached to the ventilation port 5 '. Reference numeral 11 denotes a pumping pipe guided down from the solid-liquid recovery tank 2, and a guiding tip 12 thereof 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.

[0010]

In the pipe configuration of FIG. 1, the vacuum generator 1a and the air compressor 1b are driven to close the solid-liquid suction port 8 and the open / close mechanisms 10a and 10b of the air supply pipe 9 and to open / close the vent 5 '. When the mechanism 10c is also closed, the pumping pipe 11 and the mixing chamber 7 as well as the solid-liquid recovery tank 2 are 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. The mixture is pumped and expanded, and mixed with the solid liquid in the pumping pipe 11 and the mixing chamber 7, and the apparent specific gravity of the solid is reduced.
In this state, the opening / closing mechanism 10c of the ventilation port 5'is opened, and the water and earth and sand in the pumping pipe 11 and the mixing chamber 7 are pumped by the action of the compressed air flow by the air compressor 1b, and the solid-liquid recovery is performed. It will be collected in the 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 submersion 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.

[0012]

EFFECTS OF THE INVENTION According to the present invention, suction and pumping of sludge and earth and sand having a high specific gravity and viscosity can be effectively performed even under a high suction lift condition without causing mechanical abrasion and trouble such as entanglement. It is possible to provide a solid-liquid suction pumping device which is performed and has a simple structure and simple operation, and a method of using the same.

[Brief description of drawings]

FIG. 1 is a pipeline configuration diagram of a solid-liquid suction lifting 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 symbols]

 1a Vacuum generator 1b Air compressor 2 Solid-liquid recovery tank 5'Venting port 6 Liquid supply source 7 Mixing chamber 8 Solid-liquid suction port 9 Air pipe 10a Opening / closing mechanism 10b Opening / closing mechanism 10c Opening / closing mechanism 11 Lifting pipe

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[Procedure amendment]

[Submission date] November 18, 1993

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Keiji Ishii, 4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka-shi, Tsurumi Manufacturing Co., Ltd. (72) Saburo Shimono, 4-chome, Tsurumi-ku, Osaka-shi, Osaka 16-40 Stock Company Tsurumi Works (72) Inventor Takeyuki Nishimura 4-chome Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Prefecture 16-40 Stock Company Tsurumi Works (72) Inventor Masahiro Kobayashi Tsurumi-ku, Osaka-shi, Osaka 4-16-40 shares in the Tsurumi Plant, Inc. (72) Inventor Toshimitsu Ikeuchi 4-16-40 Tsurumi, Tsurumi-ku, Osaka City, Osaka Prefecture (72) Incorporated in the Tsurumi Plant, Inc. (72) Noboru Kooka Osaka-shi, Osaka Prefecture 4-16-40 Tsurumi, Tsurumi-ku, Ltd. Inside the Tsurumi Plant, Inc. (72) Inventor, Yu Kubo, 4-16-40, Tsurumi-Tsurumi, Tsurumi-ku, Osaka, Osaka (72) Inventor: Hideki Yonemura Osaka, Osaka Prefecture Tsurumi-ku Tsurumi 4-chome 16th No. 40 Co., Ltd. in the Tsurumiseisakujo

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). Open and attach opening / closing mechanisms (10a) (10b) to the solid-liquid inlet (8) and the air supply pipe (9), respectively.
Further, a solid-liquid suction pumping device comprising a vent (5 ') opened to the atmosphere from the vacuum generator (1a) and an opening / closing mechanism (10c) attached to the vent (5'). . [Claim 2] A vacuum generating device (1a) and an air compression device (1b) in the solid-liquid suction pumping device according to claim 1 are driven to open and close the solid-liquid suction port (8) and the air supply pipe (9). (10a) and (10b) are closed and the opening / closing mechanism (10c) of the vent hole (5 ') is also closed, so that the solid-liquid recovery tank (2) and the pumping pipe (11) and the mixing chamber ( The inside of 7) is made into a negative pressure state, and then the opening / closing mechanism (10a) of the solid-liquid suction port (8) is opened to supply the liquid source (6).
After sucking a certain amount of the solid-liquid into the pumping pipe (11) and the mixing chamber (7) through the solid-liquid suction port (8), the opening / closing mechanism (10a) of the solid-liquid suction port (8) is closed. At the same time, by opening and closing the opening / closing mechanism (10b) of the air supply pipe (9), the air pressure-fed from the air supply pipe (9) is lifted up (11).
And the solid-liquid in the mixing chamber (7) is mixed, the opening / closing mechanism (10c) of the vent hole (5 ') is opened, and the pumping air flow from the air feeding pipe (9) causes the lifting pipe (11). And the solid-liquid in the mixing chamber (7) is pumped into the solid-liquid recovery tank (2) and the opening / closing operations of the opening / closing mechanisms (10a) (10b) (10c) are repeated, whereby the liquid supply source (6 The method of using the solid-liquid suction pumping device, wherein the solid-liquid of (1) is sequentially and intermittently pumped into the solid-liquid recovery tank (2).