JPH043671Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cleaning device for cleaning the inner surfaces of pipes such as plant piping and heat exchange tubes.

[Prior art] As plant piping and heat exchange tubes are used, foreign matter adheres to the inner surfaces of the tubes, causing problems such as increased fluid resistance, so the inner surfaces of the tubes are occasionally cleaned to remove the foreign matter that has adhered to them. I need to do it.
This usually involves a jet flush of water.

Fig. 1 shows a conventional cleaning device of this type, in which an injection nozzle N is placed inside a pipe P such as a pipe, and the nozzle N
Connect it to the jet cleaning vehicle T using the hose H.
The inner surface of the pipe P was jet-cleaned by jetting water from the nozzle N.

[Problems to be solved by the invention] However, in this way, the injection nozzle N is connected to the pipe P.
In the case of conventional jet cleaning, in which the pipe is placed inside the pipe and water is sprayed, especially when the diameter of the pipe P is large, the water does not sufficiently reach the upper surface a of the pipe, so the deposits do not fall off, and the removal is difficult. Therefore, the pipe P had to be turned upside down and jet-cleaned again, and the remaining deposits had to be cleaned with a cleaner, which required a great deal of time and expense.

[Means for Solving the Problems] The present invention solves the above-mentioned drawbacks of the conventional technology, minimizes the retouching work for cleaning the inner surface of the pipe, and
The object of the present invention is to provide an apparatus for cleaning the inner surface of a pipe that can jet-clean the inner surface of the pipe in a short period of time and at low cost.

Therefore, according to the present invention, the inner tube 1 is rotationally driven by an appropriate drive source 3 and passes a cleaning liquid for cleaning the inner surface of the tube to be cleaned P, and the inner tube 1 is divided into a plurality of pieces and is fitted onto the outer peripheral surface of the inner tube 1. an outer tube 4 to be cleaned, and a plurality of guides that are fitted into the outer circumferential surface of the inner tube 1 so as to be positioned between the outer tube 4 and whose movement is regulated to hold the inner tube 1 on the central axis of the tube P to be cleaned. member 5, and an injection port 6a that is slightly inclined forward in the axial direction and injects cleaning liquid in the radial direction.
and an injection nozzle 6 which is slightly inclined rearward in the axial direction and has an injection port 6b for ejecting cleaning liquid in the radial direction and is detachably connected to the tip of the inner tube 1. Ru.

[Operation and effect of the invention] Select the guide member 5 according to the inner diameter of the pipe P to be cleaned, fit the outer pipe 4 and the guide member 5 into the inner pipe 1, and screw the injection nozzle 6 to the tip of the inner pipe 1. and assemble the device. Then, a nozzle 6 is inserted into the pipe P to be cleaned.
By inserting the inner tube 1, the inner tube 1 is supported on the central axis of the tube P by the guide member 5. In this state, the driving source 3 is driven to rotate the injection nozzle 6 through the inner tube 1 while supplying water through the inner tube 1 and jetting it from the nozzle 6 toward the inner surface of the tube P.
The deposits adhering to the inner surface of the pipe P are removed by jetted water, and the inner surface of the pipe P is cleaned. At this time, the inner tube 1 is supported by the guide member 5 on the central axis of the tube P and rotates, and the nozzle 6 also rotates on the central axis of the tube P, so that the pressure is uniform over the entire inner peripheral surface of the tube P. As a result, water is jet-injected, and the conventional disadvantages such as the fact that the pressure on the upper surface a of the pipe P is too low to remove deposits from that area are eliminated. Therefore, retouching work can be kept to a minimum. Further, since the injection port of the injection nozzle 6 is composed of the injection port 6a that is slightly inclined toward the front in the axial direction and the injection port 6b that is slightly inclined toward the rear in the axial direction,
This is effective for removing deposits that have adhered to the inner surface of the pipe P. For these reasons, the inner surface of the pipe can be cleaned quickly and safely at low cost. The movement of the pipe P of the injection nozzle 6 in the axial direction (back and forth direction) is carried out manually by the operator, and the addition of the inner pipe 1 is carried out by means of a screw connection.

[Example] Hereinafter, an example of the present invention will be described with reference to FIG. 2 and FIG. It is equipped with an inner tube 1 through which liquid passes, and this inner tube 1 is supported by a guide member 5 and a bearing 2, which will be described later, and is driven by an appropriate driving source, such as an air servo 3.
It is designed to be rotationally driven by. an outer tube 4 which is divided into a plurality of parts and is fitted into the outer circumferential surface of the inner tube 1; an outer tube 4 which is fitted into the outer circumferential surface of the inner tube 1;
A plurality of guide members 5 are provided between the outer tubes 4 and 4 and whose movements are regulated by the outer tubes 4, 4. The inner tube 1 is supported on the central axis of the tube P by the guide member 5 and rotates. An injection nozzle, generally designated by 6, is detachably connected to the tip of the inner tube 1 by, for example, screwing means. This injection nozzle 6 is shown in FIG.
As shown in B, the injection port 6a is slightly inclined forward in the axial direction (for example, 15 degrees) and injects the cleaning liquid in the radial direction.
and an injection port 6b that is slightly inclined rearward in the axial direction (for example, 15 degrees) and injects cleaning liquid in the radial direction. In the example of the drawing, the nozzle 6 has a total of 4 nozzles, 2 forward-slanted injection ports 6a and 2 backward-slanted injection ports 6b.
Equipped with multiple injection ports. The inner tube 1 is connected via a swivel joint 7 to a fixed tube 8, which is connected to a jet washing vehicle via a hose (not shown).

To clean the inner surface of the pipe P, select the guide member 5 according to the inner diameter of the pipe P, fit the outer pipe 4 and the guide member 5 into the inner pipe 1, and screw the injection nozzle 6 to the tip of the inner pipe 1. Then, assemble the device as shown in FIG.
When the nozzle 6 is inserted into the pipe P to be cleaned, the inner pipe 1 is supported on the central axis of the pipe P by the guide member 5, as shown in FIG. In this state, the air servo 3 is driven to rotate the injection nozzle 6 through the inner pipe 1, and the pump of the jet washing vehicle supplies water through the inner pipe 1, and the jet is injected from the nozzle 6 toward the inner surface of the pipe P. do. The deposits adhering to the inner surface of the pipe P are removed by jetted water, and the inner surface of the pipe P is cleaned. At this time, the inner tube 1 is supported on the central axis of the tube P by the guide member 5 and rotates, and the injection nozzle 6 also rotates on the central axis of the tube P accordingly, so that the inner tube 1 is rotated uniformly over the entire inner peripheral surface of the tube P. The water is jet-injected even at a pressure of 2, and the conventional disadvantages such as the low pressure on the upper surface a of the pipe P and the inability to remove deposits from that area are eliminated. Therefore, retouching work is minimal. Further, since the injection port of the injection nozzle 6 is composed of the injection port 6a slightly inclined forward in the axial direction and the injection port 6b slightly inclined backward in the axial direction, the pipe P
Effective for removing deposits from the inner surface of the For these reasons, the inner surface of the pipe P can be cleaned quickly and safely at low cost. Axial direction (back and forth direction) of pipe P of injection nozzle 6
The movement of the inner tube 1 is carried out manually by the operator, and the addition of the inner tube 1 is carried out by means of a screw connection.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a conventional device for cleaning the inner surface of a pipe, Fig. 2 is a diagram showing a device according to an embodiment of the present invention for cleaning the inner surface of a pipe, and Fig. 3 A and B show an injection nozzle. , A is a front view, and B is a plan view. 1... Inner tube, 3... Air servo, 4... Outer tube, 5... Guide member, 6... Nozzle, 7... Swivel joint.

Claims (1)

[Scope of utility model registration request] An inner tube that is rotatably driven by an appropriate drive source and passes cleaning liquid to clean the inner surface of the tube to be cleaned, an outer tube that is divided into multiple pieces and fitted onto the outer circumferential surface of the inner tube, and is located between the outer tube. A plurality of guide members are fitted into the outer peripheral surface of the inner tube to restrict movement and hold the inner tube on the central axis of the tube to be cleaned, and the guide members are slightly inclined forward in the axial direction and spray cleaning liquid in the radial direction. and an injection nozzle that is slightly inclined rearward in the axial direction and that sprays cleaning liquid in the radial direction and is detachably connected to the tip of the inner pipe. A pipe inner surface cleaning device that cleans the inner surface of a pipe.