JPH112389A - Pig recovering tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely recover a pig and effectively recover residual attachment in a duct, by providing a pig receiving part which receives pig which goes out of a pipe and holds them inside, and an air bleed hole which has an opening plane substantially in parallel with blowing direction of air. SOLUTION: After a pig S is inserted into one top hole of a pipe P, compressed air is injected into the pipe P. The pig S is pressed and moved by air, and presses attachment in the pipe P forward. When the pig S reaches a pig recovering tool 1, the attachment is delivered out of an air bleed hole 4. Because the air bleed hole 4 has an opening plane substantially in parallel with the blowing direction of air, delivering force of the attachment out of the air bleed hole 4 is weakened, and the attachment can be recovered in a recovering container under the hole without rebounding. After delivering of all attachment, the pig S is pressed and moved by air as it is, is collided with a lid material 6, a front face receiving part, is held inside, and is recovered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pig collecting device for cleaning a pipe.

[0002]

2. Description of the Related Art To clean a pipe, a sponge ball, commonly known as a pig, made of urethane foam material or the like is inserted into the pipe.
Conventionally, a method has been used in which the pigs are pumped out with air from an air supply source such as a compressor to push out and discharge the deposits forward while wiping off the deposits in the pipeline. Also, it is frequently used as a means for removing residual concrete remaining inside a pipe used for concrete pumping after completion of concrete placement at a construction site.

[0003] The pig, which is pressure-fed in the pipe by air, is eventually recovered together with the deposits from the terminal port of the pipe.
Here, as described above, when the object to be cleaned is concrete, the pig is pressure-fed with high compressed air because of its high specific resistance and movement resistance due to its viscosity. The momentum is considerable,
Nearby workers may be injured. Therefore, as a conventional method of collecting pigs in the cleaning of the residual concrete, as shown in FIG. 3A, the pig is received by a plate material or the like, or as shown in FIG. The pig was connected to the tip opening so that the pig could fly out toward the ground.

[0004]

However, FIG.
In the method of (a), since it is not known when the pig will pop out, there is a trouble that the worker must always hold the plate material, and there is a danger that the rebounded pig hits another worker nearby. There is a problem that the residual concrete discharged together with the pig is scattered around. In addition, in the method of FIG. 3 (b), measures such as installing a container for receiving the discharged residual concrete are taken at the lower part of the joint pipe. There is a problem that since the ejection force is considerable, the ejection rebounds in the container, and the surrounding area is also stained.

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem, has a simple structure, can safely collect pigs such as sponge balls, and removes remaining deposits in a pipeline. It is an object of the present invention to provide a pig collection tool that can be efficiently collected.

[0006]

The present invention uses the following means to achieve the above object. A connection port connectable to a distal end of the pipe, a pig receiving portion for receiving and holding a pig protruding from the pipe, and a blowout direction of air provided between the connection port and the pig receiving portion; The pig is collected by a pig collecting tool comprising an air vent opening having an opening surface substantially parallel to the above.

[0007]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of a pig collection tool according to the present invention, and FIG. 2 is an operation explanatory view.

In FIG. 1, reference numeral 1 denotes a pig collecting tool for collecting a pig S (shown in FIG. 2) discharged by compressed air from a distal end of a pipe P. As the main body of the collection tool, a pipe material 2 having substantially the same diameter as the pipe P is used. As the pipe P to be cleaned,
There are various types such as tube-shaped hoses and iron pipes.
As the pig S, a hard sponge ball such as a urethane foam material is mainly used.

The pig collection tool 1 is provided with a connection port 3 that can be connected to the tip end of the pipe P. In the present embodiment, a ring-shaped connection member having an inner peripheral surface with a female thread is provided. 7, the connection is made by screwing into the tip screw portion of the pipe P, but the connection form depends on the tip shape of the pipe P, such as by directly fitting the connection port 3 to the tip port of the pipe P. It can be selected as appropriate.

The pig collecting tool 1 is provided with an air vent 4 for releasing air inside the pipe P pushed out by the movement of the pig S. The air vent 4 is provided between the connection port 3 and a pig receiving portion 5 described later,
Further, it is formed so as to present an opening surface which is substantially parallel to the direction in which the air is blown from the pipe P. In the present embodiment, the pipe 2 has a structure in which the circumferential surface is cut out. The pig receiving portion 5 is a portion that receives the pig discharged from the front end port of the pipe P and holds it inside. The lid member 6 is fixed to an opening of the pipe member 2 facing the connection port 3. Is taking measures.

Next, the operation of the pig collection tool 1 will be described with reference to FIG. First, as shown in FIG. 2 (a), the pig collection tool 1 is connected to the tip end of the pipe P via the connection member 7 so that the air vent 4 cut out of the pipe 2 faces downward. I do. After inserting the pig S into the other end of the pipe P, compressed air is sent into the pipe P by an air supply source. The pig S is pressure-fed by air to push out the deposits in the pipe P to the front, and the air in front of the pig S in the pipe P blows through the air vent 4 of the pig collection tool 1 (FIG. 2). (State of (a)).

Eventually, as shown in FIG.
Reaches the pig collection tool 1 and the attached matter is discharged from the air vent 4. Since the air vent 4 is formed so as to present an opening surface parallel to the direction in which the air is blown out from the pipe P, the force at which the deposits are discharged from the air vent 4 is weakened, and the air vent 4 The adhering matter is collected without bouncing inside the collection container installed below the container 4. The opening area of the air vent 4 is desirably as large as possible in order to slow the discharge speed of the adhered substance.

After all the deposits are discharged, the pig S having a low specific gravity is pressure-fed by air as it is, collides with the lid member 6 which is a front receiving portion, and is held inside as shown in FIG. 2 (c)), the pig S collection operation is completed.

The preferred embodiment of the pig collection tool according to the present invention has been described above. However, the shape and position of each component are not limited to those shown in the drawings.
The design can be changed as appropriate without departing from the gist of the present invention, for example, according to the shape of the pig or the properties of the internal deposits to be cleaned.

[0015]

According to the pig collecting tool of the present invention, the following effects can be obtained. (1) Since a pig catching portion is provided for receiving and holding the pig that jumps out of the pipe, the danger of the pig hitting an operator can be avoided, and the safety of pig collection work can be secured. Further, since the air vent is provided so as to have an opening surface substantially parallel to the air blowing direction, the discharge speed of the attached matter discharged from the air vent is reduced, and therefore,
The attached matter is efficiently collected without the attached matter hitting the collection container and being scattered. (2) In addition, if a pipe is used as the pig collection tool, a simple structure is required, and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a pig collection tool according to the present invention.

FIG. 2 is a diagram illustrating the operation of the pig collection tool according to the present invention.

FIG. 3 is an explanatory view showing a conventional pig collecting mode.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pig collection tool 2 Pipe material 3 Connection port 4 Air vent 5 Pig receiving part 6 Lid 7 Connection member P Piping S Pig

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeto Watanabe 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation

Claims (1)

[Claims] 1. A pig collection tool for cleaning the inside of a pipe by pressure feeding by air, wherein the connection port is connectable to a tip end of the pipe, and a pig that protrudes from the pipe is received and held therein. A pig collection tool comprising: a pig receiving portion; and an air vent provided between the connection port and the pig receiving portion and having an opening surface substantially parallel to an air blowing direction.