JP2002295772A - Joint and method for cleaning inside pipe using the joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect pipes with each other and to supply the cleaning gas or liquid without removing the pipes, thereby making it possible to clean the connected pipes. And a cleaning method for cleaning the inside of the pipe by connecting a cleaning fluid supply unit to the coupling and providing a cleaning method for easily cleaning the inside of the pipe. SOLUTION: This is a joint 2 for connecting pipes and supplying or discharging gas or liquid.
Is a rubber ring 3 having pipes joined to each other and having a through hole 8 in a radial direction, a fastening ring portion 9 for pressing the rubber ring 3 against each tube and fastening the tubes, and a fastening ring portion 9. And a fastening ring 4 having a hollow cylindrical portion 5 continuous with a hole provided in the radial direction of the cylinder.
And a method for cleaning the inside of a pipe using the joint.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint and a method for cleaning the inside of a pipe using the joint, and more particularly, to a joint for connecting pipes and supplying or discharging gas or liquid, and water for the joint. The present invention relates to a cleaning method for cleaning a connected pipe by supplying a cleaning gas or liquid such as air or air.

[0002]

2. Description of the Related Art A joint such as a Victoria joint is used to connect a drain pipe such as a spiral steel pipe.
The electric joint is connected with a rubber ring so as to fill a gap between the connecting portions of the tubes, and is fastened with a metal fastening ring. Conventionally, when water flowing in a pipe connected by using a joint such as the Victoria joint is taken in or combined with a separately provided pipe, the joint is removed and a T joint and a nipple with a collar are connected. They are connected by means.

In order to clean the inside of the pipe, the above-mentioned joint is removed, and compressed air or water is supplied from the removed portion to perform cleaning. Further, when necessary, it is connected to a compressor or a pump using a connecting means, and cleaning is performed by supplying compressed air or water.

[0004] However, when the above-mentioned T-joint is used, there is a problem that the connected pipe must be shifted because the connecting width of the joint is different. Further, the same applies to flange joints, collar joints, socket joints, and the like, in addition to the above-described Victoria joints. Usually, the above-mentioned water intake or the like is performed after the completion of pipe work, and is often required only temporarily. In such a case, it is difficult to shift the pipe, and even when the pipe is shifted, there is an inconvenience that other pipes must be removed. Furthermore, there is also a case where drainage or the like flowing through the connected pipe is collected as a sample, or there is a case where it is desired to drain the water on the way because of a large amount of drainage. There was a problem.

[0005] Further, when cleaning the inside of a pipe,
It takes time and effort to remove the joint. Particularly in the case of a large-diameter pipe, it is necessary to detach the joint after hanging off each other's pipes, which requires more time and labor.

[0006]

That is, the present invention makes it possible to connect the pipes and to clean the connected pipes by supplying a cleaning gas or liquid such as compressed air or water without removing the pipes. In addition, the present invention provides a joint that enables easy discharge of fluid flowing in a connected pipe such as water intake, and cleans the pipe by connecting cleaning fluid supply means such as an air compressor and a pump to the joint. It is intended to provide a cleaning method.

[0007]

According to a first aspect of the present invention, there is provided a joint for connecting pipes and for supplying or discharging gas or liquid, wherein the joint comprises the pipe. A rubber ring provided with a through hole in the radial direction, and a fastening ring portion for pressing the rubber ring to each tube and fastening the tubes together,
A coupling ring having a hollow cylindrical portion that is continuous with a hole provided in a radial direction of the coupling ring portion, and a joint is provided in which the through-hole and the cylindrical portion are arranged in the same direction. Is done.

According to a second aspect of the present invention, there is provided a joint wherein a part of the fastening ring is detachable or separated into two parts, and the joint is connected to each other by a bolt and a nut. You.

According to a third aspect of the present invention, there is provided a joint in which a closing means is further connected to the cylindrical portion to seal the inside of the connected pipe.

According to a fourth aspect of the present invention, there is provided a coupling wherein the closing means is a cap or a valve.

According to the invention of claim 5 of the present invention, the through holes provided in the radial direction of the rubber ring are directed in a predetermined direction, and tubes are inserted from both sides of the rubber ring to join the tubes together. Arrange a hollow cylindrical portion continuous to a hole provided in the radial direction of the fastening ring so as to be in the same direction as the through hole,
The rubber ring is pressed against each tube by the fastening ring and the tubes are fastened to each other, and the inside of the tube connected by supplying a cleaning gas or liquid by connecting a cleaning fluid supply unit to the cylindrical portion is connected. A method for cleaning an inside of a pipe using a joint characterized by cleaning is provided.

According to a sixth aspect of the present invention, there is provided a method for cleaning an inside of a pipe, wherein the cleaning fluid supply means uses a joint which is an air compressor or a pump.

According to a seventh aspect of the present invention, there is provided a method of cleaning a pipe using a joint in which the cleaning gas or liquid is compressed air or water.

According to the invention of claim 8 of the present invention, the cylindrical portion is further provided with a valve as closing means,
A method is provided for cleaning the interior of a pipe using a fitting that opens the valve to supply the cleaning gas or liquid.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the drawings. FIG. 1 is a view showing a state where pipes are connected to each other using the joint of the present invention. FIG. 1 shows two tubes 1a, 1
b are connected by a joint 2. The joint 2 shown in FIG. 1 is provided with a rubber ring 3 that can join the pipes 1a and 1b. In addition, fitting 2
A fastening ring 4 is provided, which can press the rubber ring 3 against each of the pipes 1a and 1b and fasten them. The fastening ring 4 shown in FIG. 1 is provided with a hollow cylindrical cylindrical portion 5, and the cylindrical portion 5 has a nipple 6.
A cap 7 is provided as a closing means via.
In the embodiment shown in FIG. 1, a fluid such as drainage flowing in the pipes 1 a and 1 b is prevented from flowing out to the outside through the cylindrical portion 5 by being sealed by the cap 7.

The pipes 1a and 1b shown in FIG. 1 may be pipes of any material and size, such as a steel pipe such as a spiral steel pipe, and a vinyl chloride pipe. The joint 2 shown in FIG.
The material or the size can be adjusted to the material or the size of a or 1b. In addition, the joint 2 of the present invention is shown in FIG.
By arranging the cylindrical portion 5 not in the upper direction but in the lower direction as shown in (1), the fluid flowing through the pipes 1a and 1b can be appropriately discharged or a sample can be collected. If the pipes 1a and 1b are water pipes, water can be easily taken from the joint 2 as water for sprinkling.

Hereinafter, the joint according to the present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 2 is an exploded perspective view showing the joint according to the first embodiment of the present invention. FIG.
In the perspective view shown in FIG. 1, the rubber ring 3 is provided with a through hole 8 in the radial direction. The rubber ring 3 shown in FIG. 2 can be joined by inserting a tube from both sides into a hollow portion at the center of the ring. In addition, a fastening ring 4 is provided, which can press the rubber ring 3 against each tube and fasten it. The fastening ring 4 shown in FIG. 2 has a fastening ring portion 9 that can be pressed against and fastened to each tube so as to sandwich the rubber ring 3 and a hole (not shown) provided in a radial direction of the fastening ring portion 9. A continuous hollow cylindrical portion 5 is provided.

The fastening ring portion 9 shown in FIG. 2 is separable into two upper and lower portions of the ring, and projecting portions 10 are provided on the left and right of the separated fastening ring 4. Further, the overhang portion 10 is provided with a bolt hole 11 so that the upper and lower fastening ring portions 9 can be connected to each other. The fastening ring 4 shown in FIG. 2 surrounds the rubber ring 3 to which the pipe is joined so as to be sandwiched from above and below. The tubes are fastened to each other and the rubber ring 3 can be pressed. Further, the fastening ring 4 is disposed such that the hollow cylindrical portion 5 is in the same direction as the through hole 8.

As the rubber ring 3 used for the joint 2 of the present invention, synthetic rubber such as neoprene rubber and butyl rubber, or natural rubber can be used as long as it is made of rubber. In addition, the rubber ring 3 can join a pipe,
A through hole 8 of an appropriate size for supplying a cleaning gas or liquid such as water or compressed air may be provided. The fastening ring 4 used for the joint 2 of the present invention is:
It is preferable that the rubber ring 3 can be fastened so as to be pressed against the center of the tubes 1a and 1b so as to reduce leakage from the gap between the joined rubber ring 3 and the tube walls of the tubes 1a and 1b. Further, as the fastening ring 4 used in the joint 2 of the present invention, as long as the rubber ring 3 can be brought into pressure contact as described above and the pipes can be fastened to each other, the two rings are used as described above. Even if they are not separated, the overhanging portion 10 and the bolt hole 11 may be provided on only one side to be detachable and connected by the bolt 12 and the nut 13 or the bolt 12 and the nut 13 It may be fastened by any means other than the above.

The fastening ring 4 shown in FIG. 2 is provided with a hollow cylindrical portion 5, and the through hole 8 formed in the rubber ring 3 and the hollow portion of the cylindrical portion 5 are arranged in the same direction. Is done. By doing so, a cleaning gas or liquid such as water or compressed air can be supplied into the pipe through the hollow cylindrical portion 5 connected to the cleaning fluid supply means. FIG.
Can be a socket whose hollow portion is threaded, and can be attached by welding or the like to a fastening ring provided with a fastening ring hole. Further, the material of the fastening ring 4 can be used in accordance with the material of the pipe. Further, an anti-corrosion material can be used or the inside can be lined depending on the fluid flowing in the pipe.

In FIG. 2, the cylindrical portion 5 is further provided with a nipple 6 and a cap 7 as closing means.
Fluid such as drainage flowing in the connected pipe is prevented from flowing out to the outside through the hollow cylindrical portion 5.
The hollow portion inside the cylindrical portion 5 shown in FIG. 2 is threaded so that the nipple 6 can be screwed. Also, the cap 7 is similarly threaded,
The nipple 6 can be screwed. In the present invention, as long as the fluid flowing in the tube can be prevented from flowing out of the tube through the cylindrical portion 5, the cylindrical portion 5 is
It may not be threaded, and may have any shape such as a flange. Further, the shape of the closing means can be changed according to the shape of the cylindrical portion 5.

FIG. 3 is a sectional view showing a state where pipes are connected to each other using the joint shown in FIG. In FIG. 3, the pipe 1a and the pipe 1b are joined by a rubber ring 3, and a gap is opened between the pipes 1a and 1b so that the through hole 8 is not closed by the pipe 1a or 1b. Have been.
Further, a cylindrical portion 5 that is continuous with a hole 14 provided in the fastening ring 4 is provided so as to be in the same direction as the through hole 8.
Further, the hollow portion of the cylindrical portion 5 is threaded, and a cap 7 is connected via a nipple 6.
By doing so, it is possible to discharge the fluid flowing in the pipe, and it is also possible to supply a cleaning gas or liquid such as water or compressed air. In the present invention, a stopper or the like is provided on the rubber ring 3 so as not to block the through hole 8, and it is possible to prevent the rubber ring 3 from being inserted into a portion having the through hole 8.

The joint 2 shown in FIG.
a, 1b are joined by inserting
By pressing and fastening the rubber ring 3 around, it is possible to reduce leakage from the gap between the pipes 1a and 1b and the rubber ring 3 or the gap between the rubber ring 3 and the fastening ring 4. In the present invention, the tubes 1a and 1b are
The insertion length to be inserted into the can be the length required for splicing. In the present invention, the fastening ring 4
3 does not have to have the same width as the rubber ring 3 as shown in FIG. 3, but may have any width as long as the rubber ring 3 can be pressed against the tubes 1a and 1b to fasten the tubes 1a and 1b. It may be.

FIG. 4 is an exploded perspective view showing a joint according to a second embodiment of the present invention. In the perspective view shown in FIG. 4, the rubber ring 3 and the fastening ring 4 are the same as those described above, but the cylindrical portion 5 is provided with a nipple 6, a valve 15, a nipple 16, and a cap 7. The nipples 6 and 16 shown in FIG. 4 are used for screwing the cylindrical portion 5 and the valve 15 and the valve 15 and the cap 7, respectively. Also,
The nipple 16 shown in FIG. 4 can be screwed into the cap 7 to seal the inside of the tube, but can also be used to connect to a cleaning fluid supply means (not shown). The valve 15 shown in FIG. 4 is normally closed so that the fluid flowing in the pipe connected by the joint 2 does not flow out through the valve 15. When cleaning the inside of the pipe for maintenance or the like, the cap 7 is removed, a cleaning gas or liquid is supplied from a cleaning fluid supply unit (not shown) connected to the nipple 16, and the valve 15 is opened. The cleaning can be performed by supplying a cleaning gas or liquid to the cleaning device.

The valve 15 shown in FIG. 4 can prevent fluid such as drainage flowing in the connected pipe from leaking to the outside of the pipe, and can supply a cleaning gas such as water or compressed air from a cleaning fluid supply means (not shown). Alternatively, any type or size of valve 15 can be used as long as the liquid can supply an appropriate amount. Valve 1
As the material of 5, any material may be used, but the same material as the above-described tube and the fastening ring 4 can be used.

Hereinafter, a method for cleaning the inside of a pipe using the joint of the present invention will be described in detail with reference to FIGS. FIG. 5 is a view showing that the cleaning fluid supply means is connected to clean the inside of the pipe connected by the joint shown in FIG. In the embodiment shown in FIG. 5, an air compressor 17 is provided as a cleaning fluid supply unit, and the air compressor 17 is
The pressure-resistant hose 18 is connected to the joint 2. In the embodiment shown in FIG.
A joint such as 9 is provided and connected to the cylindrical portion 5 via a nipple 6. In FIG. 5, the pipes 1a, 1b, and 1c are connected using the joint 2. In FIG. 5, a drain pipe is formed by the pipes 1a, 1b, and 1c connected by using the joint 2, and when cleaning the inside of the drain pipe, the compressed air is passed through the pressure hose 18 by activating the air compressor 17 described above. Supplied. The compressed air passes through the cylindrical portion 5 and through holes (not shown), and the tubes 1a, 1b,
The wastes such as garbage, waste products, and rust that are supplied into the drainage pipe 1c and accumulated in the drainpipe are extruded. The extruded waste is discharged to a sewer connected to a drain pipe.

The air compressor 17 shown in FIG. 5 may be of any type and air volume as long as it can compress and supply air. The pressure of the compressed air used for cleaning can be usually 0.6 to 0.8 MPa,
The pressure can be increased as needed. As the pressure-resistant hose 18, a rubber hose for pressure resistance can be generally used, but any hose or tube may be used as long as it can withstand the above-mentioned air pressure. Furthermore, as long as the pressure-resistant hose 18 and the cylindrical portion 5 can be connected, any connection other than the union 19 and the nipple 6 can be used. Further, in the present invention, it is not necessary to use the joint 2 of the present invention each time a pipe is connected, and the joint 2 of the present invention can be used at an appropriate interval. In this case, any other connection such as a flange joint, a union joint, a socket joint, and a Victoria joint may be used for other connections.

The cleaning gas or liquid is not limited to the compressed air from the air compressor described above, but may be compressed air or nitrogen stored in a tank or a cylinder, liquid air or liquid stored in a tank or a cylinder, or the like. What evaporated liquid nitrogen, water, etc. can be used. In addition, examples of the cleaning fluid supply unit include the above-described air compressor, pump, tank, and evaporator. Further, the pressure required for cleaning can be appropriately set to a required pressure. In this case, the rubber ring 3, the pressure-resistant hose 18, the fastening ring 4, the nipples 6, 16, the union 19
The type or material can be changed.

FIG. 6 shows the connection of the cleaning fluid supply means.
FIG. 5 is a diagram illustrating a state where the inside of a pipe connected by the joint illustrated in FIG. 4 is being cleaned. The joint 2 shown in FIG. 6 is provided with a valve 15 via a nipple 6, and further includes a nipple 1
6 and connected to the air compressor 17. In the embodiment shown in FIG. 6, the air compressed by the air compressor 17 is supplied through a pressure-resistant hose 18 as in FIG.
Pipes 1 connected by a joint 2 by opening
a, 1b, and 1c can be supplied with compressed air. The compressed air supplied to the pipes 1a, 1b, and 1c is supplied to the pipes 1a, 1b, and 1c through the cylindrical portion 5 and the through holes (not shown) as described above.
b, 1c is used to discharge the accumulated waste. In the present invention, the cleaning fluid supply means can be always connected, and the inside of the pipes 1a, 1b, and 1c can be easily cleaned only by operating the valve 15.

The joint 2 of the present invention is not limited to the above-described embodiment, but includes a pipe to be used, a fluid flowing through the pipe,
The material, the shape, and the size can be set according to the fluid supplied for cleaning, the use temperature, and the use pressure. Further, it can be used as a substitute for the T-joint, and another line can be newly formed from the cylindrical portion 3.

[0031]

Therefore, the joint according to the present invention not only connects the pipes but also supplies a cleaning gas or liquid such as compressed air or water without removing the pipes or removes the fluid flowing through the connected pipes. Can be discharged. That is, when joining with a separately provided pipe or when taking water from a water pipe, it is not necessary to exchange a joint with a T joint or the like to join or take water.
It also eliminates the need to move previously connected tubes to connect the fittings.

Further, by providing a method for cleaning the inside of a pipe using the joint of the present invention, the inside of the pipe can be easily cleaned simply by connecting a cleaning fluid supply means such as an air compressor.

[Brief description of the drawings]

FIG. 1 is a view showing a state where pipes are connected to each other using a joint of the present invention.

FIG. 2 is an exploded perspective view showing the joint according to the first embodiment of the present invention.

FIG. 3 is a sectional view showing a state where pipes are connected to each other using the joint shown in FIG. 2;

FIG. 4 is an exploded perspective view showing a joint according to a second embodiment of the present invention.

FIG. 5 is a view showing a state where the inside of a pipe connected by using the joint shown in FIG. 2 is being cleaned;

FIG. 6 is a view showing a state where the inside of the pipe connected by using the joint shown in FIG. 4 is being cleaned;

[Explanation of symbols]

 1a, 1b, 1c ... pipe 2 ... joint 3 ... rubber ring 4 ... fastening ring 5 ... cylindrical part 6 ... nipple 7 ... cap 8 ... through hole 9 ... fastening ring part 10 ... projecting part 11 ... bolt hole 12 ... bolt 13 ... Nut 14 ... Hole 15 ... Valve 16 ... Nipple 17 ... Air compressor 18 ... Pressure-resistant hose 19 ... Union

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Seiji Mori 1-20-10 Toranomon, Minato-ku, Tokyo Nishimatsu Construction Co., Ltd. F-term (reference) 3B116 AA13 AB53 BB21 BB88 BB90 3H019 BA03 BB01 BC05

Claims (8)

[Claims] 1. A joint for connecting pipes and supplying or discharging gas or liquid, the joint comprising a rubber ring connecting the pipes and having a through hole in a radial direction. A fastening ring portion that presses the rubber ring against each tube and fastens the tubes, and a fastening ring that includes a hollow cylindrical portion that is continuous with a hole provided in a radial direction of the fastening ring portion. Arranging the through-hole and the cylindrical portion in the same direction,
Fittings. 2. The joint according to claim 1, wherein the fastening ring is partly detachable or separated into two parts, and is connected to each other by bolts and nuts. 3. The joint according to claim 1, wherein closing means is further connected to the cylindrical portion, and the inside of the connected pipe is sealed. 4. The coupling according to claim 3, wherein said closing means is a cap or a valve. 5. A through hole provided in a radial direction of a rubber ring is directed in a predetermined direction, and tubes are inserted from both sides of the rubber ring to join the tubes so that they are in the same direction as the through holes. A hollow cylindrical portion that is continuous with a hole provided in the radial direction of the fastening ring is arranged, the rubber ring is pressed against each tube by the fastening ring, and the tubes are fastened to each other, and a cleaning fluid is attached to the cylindrical portion. A method for cleaning the inside of a pipe using a joint, wherein the inside of the connected pipe is cleaned by supplying a cleaning gas or liquid by connecting a supply means. 6. The method according to claim 5, wherein the cleaning fluid supply unit is an air compressor or a pump. 7. The method according to claim 5, wherein the cleaning gas or liquid is compressed air or water. 8. The cylinder according to claim 5, further comprising a valve provided as closing means on the cylindrical portion, wherein the valve is opened to supply the cleaning gas or liquid. A method of cleaning the inside of a pipe using a joint.