JPH0532799U - Vacuum suction device suction line - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a suction pipe line that effectively sucks solid liquid from a deep place without lowering the performance of the vacuum suction device even if the suction height is high. thing. A single or a plurality of relay tanks 3 are interposed between a liquid supply source 2 and an upper vacuum suction device 1, and a liquid suction pipe 4 guided from the liquid supply source 2 is connected to the relay tank 3 Connected to the suction port of the vacuum suction device 1 via the liquid transfer pipe 5 and the air supply pipe 6 guided upward from the relay tank 3 with or without passing through a higher relay tank, and Each relay tank 3 is provided with an intake port 7 which is opened and closed by a valve operation, and the liquid suction pipe 4, the liquid supply pipe 5, the air supply pipe 6 and the air intake port 7
The solid-liquid of the liquid supply source is collected by the vacuum suction device 1 through the single or plural relay tanks 3 by opening and closing the valve attached to the.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a suction line of a vacuum suction device used for collecting sewage and sludge containing solid matter, such as suction and drainage from a vertical shaft in a shield work for laying a sewage conduit.

[0002]

[Prior Art]

 Conventionally, in collecting sewage and sludge associated with shield work, the vacuum pump is driven with the suction pipe drawn out from the vacuum suction device being guided into the reservoir at the bottom of the vertical shaft.

[0003]

[Problems to be solved by the device]

 However, in recent years, shield work is often carried out at a deep underground position, and the depth of the starting shaft also becomes deeper accordingly. If the suction lift is increased, the performance of the vacuum suction device will be deteriorated, and sludge and earth and sand with high specific gravity and viscosity will not be lifted.

An object of the present invention is to provide a suction pipe line of a vacuum suction device in which heavy objects such as sludge and earth and sand can be effectively sucked up even if the suction height is high.

[0005]

[Means for solving the problem]

 In the suction pipe line of the vacuum suction device according to the present invention, the liquid suction pipe which is guided above the liquid supply source and opened and closed by the valve operation is introduced into one relay tank, and the one relay tank is introduced. Liquid supply pipe and air supply pipe that are guided above the inside of the tank and opened and closed by valve operation, respectively, are connected to the suction port of the vacuum suction device, or the liquid supply pipe and air supply pipe are placed above the one relay tank. The liquid feed pipe and the air feed pipe, which are introduced into the upper relay tank installed above and are opened and closed by valve operation, are installed above the upper relay tank. Introduced into the other upper relay tank, the liquid feed pipe that is guided above the uppermost relay tank through multiple relay tanks and opened and closed by valve operation, and Connect the air pipe to the suction port of the vacuum suction device And was Fusetsu an inlet which is opened and closed by a valve operation to each of the relay tank.

[0006]

【Example】

 Hereinafter, description will be given with reference to the drawings of the embodiments.

1, FIG. 2, and FIG. 3, 1 is a vacuum pump or a vacuum suction device composed of a blower 1a and a receiver tank 1b, and 2 is a liquid supply source, which is the sewer pipe mentioned at the beginning. Taking the shield work for laying as an example, this corresponds to a storage tank drilled in the vertical shaft to store the mud and groundwater that flow out from the shield machine.

In FIG. 1, 3 is a relay tank interposed between the liquid supply source 2 and the upper vacuum suction device 1, and 4 is a lower end opening formed at the suction port 4 e, The liquid suction pipe is guided upward, and the terminal opening is introduced into the upper portion of the relay tank 3. A liquid feeding pipe 5 is guided from the upper portion of the relay tank 3 and an air feeding pipe 6 is guided from the lower portion thereof to be connected to the suction port of the vacuum suction device 1.

2 and 3, reference numerals 3a, 3b ... 3n are relay tanks provided in a suction pipe line extending from the liquid supply source 2 to the vacuum suction device 1 above. The liquid suction pipe 4 guided from the liquid supply source 2 is electrically connected to the upper portion of the first relay tank 3a. Further, a liquid feed pipe 5a is led from the lower portion of the first relay tank 3a, and an air feed pipe 6a is led from the upper portion thereof, and introduced into the upper portion of the upper relay tank 3b. Furthermore, a liquid feed pipe 5b is led from the lower part in the upper relay tank 3b, and an air feed pipe 6b is led from the upper part, and introduced into the upper part in the uppermost relay tank 3n. .. A liquid feed pipe 5n is led from the lower part of the uppermost relay tank 3n, and an air feed pipe 6n is led from the upper part of the tank, and is connected to the suction port of the vacuum suction device 1.

1, 2 and 3, 4v is a valve for opening and closing the liquid suction pipe 4, 4a is an intake pipe communicating with the lower part of the intake pipe 4, Although it is introduced to form an air or compressed air introduction path, it can also be used as a wash water supply path in the suction port 4e by separately connecting and switching to a water supply mechanism. 5v is a valve for opening / closing each of the liquid feeding pipes 5, 5a, 5b, 5n, and 6v is a valve for opening / closing each of the liquid feeding pipes 6, 6a, 6b, 6n. Reference numeral 7 is an intake port attached to the upper portion of each relay tank 3, 3a, 3b, 3n, and 7v is a valve for opening and closing these intake ports 7. 8 is a liquid level sensor installed in each relay tank 3, 3a, 3b, 3n.

In FIG. 2, 9a is a merging pipe that joins the liquid feeding pipe 5a and the air feeding pipe 6a at the upper conducting portion, 9b is a merging pipe that joins the liquid feeding pipe 5b and the air feeding pipe 6b at the upper leading portion, and 9v is These are valves for opening and closing the merging pipes 9a and 9b.

[0012]

[Action]

 In the pipeline configuration of FIG. 1, the liquid supply pipe 5 and the intake port 7 are closed by closing the valves 5v and 7v, and the liquid suction pipe 4 and the air supply pipe 6 are opened by opening the valves 4v and 6v. When the vacuum pump 1a is operated, the receiver tank 1b and the relay tank 3 have a negative pressure, and the solid liquid in the liquid supply source 2 is sucked into the relay tank 3 through the suction pipe 4a. The atmosphere is self-priming, and this self-priming action enhances the suction flow velocity and suction effect. When the solid liquid in the relay tank 3 reaches a predetermined amount, the valves 4v and 6v are closed by the signal of the liquid level sensor 8 to close the suction pipe 4 and the air supply pipe 6, and the valve 5v. By opening 7v and 7v to open the liquid supply pipe 5 and the intake port 7, the solid liquid in the relay tank 3 which has become positive and negative is collected in the receiver tank 1b.

In the pipe configuration of FIG. 2, the liquid supply pipes 5a, 5b, 5n and the intake ports 7 are closed by closing the valves 5v and 7v, and the liquid suction pipe 4 is opened by opening the valve 4v. At the same time, the air supply pipes 6a, 6b, 6n are opened by the opening operation of the valve 6v, and the merging pipes 9a and 9b are also opened by opening the valve 9v, and the receiver tank is operated by the operation of the vacuum pump 1a. The inside of 1b and each of the relay tanks 3a, 3b, 3n have a negative pressure, and the solid liquid in the liquid supply source 2 is first sucked into the first relay tank 3a. Then, when the solid liquid in the relay tank 3a reaches a predetermined amount, the valve 4v is closed by the signal of the liquid level sensor 8 to close the liquid suction pipe 4, and the liquid supply pipe 5a is opened. When the valve 5v is operated and the valve 7v is operated so as to open the intake port 7 of the first relay tank 3a, the solid liquid in the first relay tank 3a having a positive pressure is transferred to the upper relay tank. It will be transferred into 3b. When the amount of the solid liquid in the upper relay tank 3b reaches a predetermined amount, the valves 9v and 6v are operated so as to close the merging pipe 9a and the air feeding pipe 6b by the signal of the liquid level sensor 8, and the liquid feeding pipe 5b is opened. If the valve 5v is operated so as to operate and the valve 7v is operated so as to open the intake port 7 of the upper relay tank 3b, the solid liquid in the upper relay tank 3b, which has become a positive pressure, is further transferred to the upper relay. By repeating the operation of being transferred to the relay tank 3n, it is transferred to the uppermost relay tank 3n. Then, when the solid-liquid in the uppermost relay tank 3n reaches a predetermined amount, the valves 9v and 6v are operated by the signal of the liquid level sensor 8 so as to close the merging pipe 9b and the air feeding pipe 6n, and the liquid feeding pipe 5n. If the valve 5v is operated so as to open the valve, and the valve 7v is operated so as to open the intake port 7 of the tank 3n for the highest relay, the solid liquid in the tank 3n for the highest relay which has become positive pressure is released. It is collected in the receiver tank 1b and discharged from there to a predetermined disposal place in a timely manner.

Note that the valve 9v in FIG. 2 can be omitted by adopting the pipe line configuration as shown in FIG.

[0015]

[Effect of the device]

 According to the present invention, the relay tank is provided in the middle of the liquid suction pipe line from the liquid supply source to the upper vacuum suction device, and since the vacuum suction action is performed in stages, the suction height is increased. Even if it is high, it does not deteriorate the performance of the vacuum suction device, it also works effectively for lifting heavy objects such as sludge and earth and sand, and it is suitable for collecting mud from a deep vertical shaft in shield construction. In addition, it is needless to say that the invention can be applied to all suction pipe lines of a device for transporting solid / liquid and a mixture thereof using air as a medium.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a suction pipe line of the present invention, which is an example in which a single relay tank is interposed.

FIG. 2 is a configuration diagram of a suction pipe line according to the present invention, in which a plurality of relay tanks are interposed, and a liquid feed pipe and an air feed pipe that are upwardly guided from a lower relay tank are joined to a joining pipe. This is an example of introduction to an upper relay tank.

FIG. 3 is a schematic diagram of a suction pipe line of the present invention, in which a plurality of relay tanks are interposed, and a liquid feed pipe and an air feed pipe that are guided upward from a lower relay tank are respectively used for upper relay. This is an example of introduction to a tank.

[Explanation of symbols]

1 Vacuum suction device 2 Supply source 3 Relay tank 3a One relay tank 3b Upper relay tank 3n Uppermost relay tank 4 Liquid suction pipe 5 Liquid transfer pipe from the relay tank to the vacuum suction device 5a One relay Delivery pipe from the tank for relay to the upper relay tank 5b Liquid delivery pipe from the upper relay tank to the uppermost relay tank 5n Liquid delivery pipe from the uppermost relay tank to the vacuum suction device 6 Air supply pipe 6a One relay Pipe from the tank for the upper relay to the tank for the upper relay 6b Air pipe from the tank for the upper relay to the tank for the uppermost relay 6n Air pipe from the tank for the uppermost relay to the vacuum suction device 7 Intake port

Claims (2)

[Scope of utility model registration request] 1. A liquid suction pipe (4) which is guided above a liquid supply source (2) and opened and closed by a valve operation is introduced into a relay tank (3) and above the relay tank (3). The liquid supply pipe (5) and the air supply pipe (6) which are guided and opened / closed by valve operation are connected to the suction port of the vacuum suction device (1), respectively, and the intake port (7) opened / closed by valve operation is connected. A suction pipe line of a vacuum suction device, which is attached to the relay tank (3). 2. A relay tank (3) having a liquid suction pipe (4) which is guided above a liquid supply source (2) and opened and closed by a valve operation.
Liquid supply pipe (5a) which is introduced into a), is guided from above the one relay tank (3a), and is opened and closed by valve operation.
And the air supply pipe (6a) to the relay tank (3a) as described above.
A liquid feeding pipe (5b) and an air feeding pipe (5b) which are introduced into the upper relay tank (3b) interposed above the upper relay tank (3b) and are opened and closed by valve operation above the upper relay tank (3b). 6b) is introduced into another upper relay tank which is interposed above the upper relay tank (3b), whereby the uppermost relay tank is inherited by connecting a plurality of relay tanks. A liquid supply pipe (5n) and an air supply pipe (6) which are guided from above (3n) and opened and closed by a valve operation.
n) is connected to the suction port of the vacuum suction device (1), and the suction port (7) opened / closed by valve operation is attached to each of the relay tanks (3). Suction line.