KR20210100040A - Flexible joint and method for connecting pump and pipe using the same - Google Patents

Abstract

The present invention relates to a flexible joint for connecting a pump and a pipe, which comprises: a connection unit, where a connection hole is formed in a center portion, providing a pair of flanges having a fastening hole formed in a periphery unit; a corrugated bellows of which both end parts are respectively coupled to be connected to the connection hole of the flange between the facing flanges; a pipe unit providing a braid, of which both end parts are respectively coupled to the flange, surrounding an outer circumference of the bellows; a pair of clamps surrounding the pipe unit in both end parts of the pipe unit; and a fixing unit providing a plurality of fixing bolts coupled to the clamp to enable the clamps to be spaced from each other to be closely attached to each flange and configured to be attached to and detached from the pipe unit.

Description

A flexible joint and a method to connect a pump and a pipe using the same

The present invention relates to a flexible joint and a method for connecting a pump and a pipe using the same.

In order to supply water to a multi-story building such as an apartment complex, a hospital, or a school, a water supply pipe is installed indoors. The pipe is configured by connecting a plurality of pipes, and may include a pipe member such as a joint or an elbow for connecting, branching, or joining the pipes.

The pipe may be connected to a water supply tank or a pump provided indoors to forcibly supply water or other fluid, and the fluid inside the pipe may be circulated by pressure applied by the pump and supplied to a desired location.

The pump may be connected to the pipe using a joint, and vibration generated in the pump may be transmitted to the pipe through the joint while the pump is operating. When the vibration by the pump is transmitted to the pipe, the pipe serves as a passage for the vibration, and the vibration is transmitted to the building, and noise due to the vibration may occur. In addition, fatigue is accumulated in the joint portion due to the continuously generated vibration, and there is a risk that the joint may be damaged.

Accordingly, a flexible joint that can be flexibly bent was used to connect the pump and the pipe. The flexible joint can absorb the vibration generated by the pump and prevent it from being transmitted to the pipe.

The conventional flexible joint is specifically provided with flanges on both sides, and is configured to be coupled to a piping portion made of a flexible metal tube having a corrugated shape in the center between the flanges. Such a flexible joint has been disclosed in Public Utility Model Publication No. 1999-0014577.

However, since the flexible joint may be deformed or damaged by the load of the pipe or valve between the pump or the valve and the pipe portion when connecting the pipe and the pump installed using the conventional flexible joint, the connection position of the pump and the pipe may change, and there is a problem that more time and effort required for construction are required to correct this.

And, in order to solve the above problems, there is a method of welding the flange of the flexible joint with a rod-shaped iron material, and then constructing the flexible joint in a state where the piping line is not bent. There is a difficulty in removing the welded iron material.

Public Utility Model Gazette Office 1999-0014577 (1999.005.06. Announcement)

The present invention is to solve the problems of the prior art described above, and to provide a flexible joint that prevents vibration generated by a pump from being transmitted to a building through the pipe when installing an indoor pipe. And, it is an object to provide a flexible joint that is not damaged by vibration generated by the pump.

In addition, it is an object of the present invention to provide a flexible joint that enables easy construction by providing a fixing part configured to be detachable from the pipe portion when performing the construction for discharging the pipe, and a method for connecting the pump and the pipe using the same.

However, the technical problems to be achieved by the present embodiment are not limited to the technical problems as described above, and other technical problems may exist.

As a means for achieving the above-described technical problem, an embodiment of the present invention is a flexible joint for connecting a pump and a pipe, a connecting hole is formed in the central portion, and a pair of flanges in which a fastening hole is formed in the peripheral portion. A connecting portion, a corrugated bellows each having both ends coupled to communicate with the connecting hole of the flange between the flanges facing each other, and a piping portion providing a braid surrounding the outer periphery of the bellows and having both ends coupled to the flange, respectively, and the A pair of clamps surrounding the pipe part at both ends of the pipe part, and a plurality of fixing bolts coupled to the clamp so that the clamps are spaced apart from each other and closely adhere to the flange, are configured to be detachable from the pipe part It includes a fixed part that is

In one embodiment, the clamp includes first and second clamp bodies having one end connected by a hinge, and a locking means is provided to enable separation and coupling at the other ends of the first and second clamp bodies, the clamp includes a plurality of fixing pieces extending radially from the first and second clamp bodies and coupled to the fixing bolts.

In one embodiment, the locking means includes first and second connecting pieces each extending in a round shape from the other ends of the first and second clamp bodies, a bolt passing through a through hole formed in the first and second connecting pieces, and the bolt. and a nut to be coupled with.

In one embodiment, the clamp includes a first clamp body having a first bent portion convexly bent and a first connecting piece extending to both sides of the first bent portion, and a second bent portion and the second bent portion facing the first bent portion a second clamp body having second connecting pieces extending to both sides, wherein the first and second clamp bodies are bolted and nut fastened through through holes formed in the first and second connecting pieces to enable separation and coupling; , The clamp includes a plurality of fixing pieces extending radially from the first bent portion and the second bent portion and coupled to the fixing bolt.

In one embodiment, the fixing piece is configured to be in close contact with the flange.

In one embodiment, the fixing bolt is provided as a rod-shaped bolt having threads formed at at least both ends, and is fastened with a nut through a through hole formed in the fixing piece.

In one embodiment, the fixing piece consists of three or four spaced apart at a predetermined angle.

Another embodiment of the present invention is a method for connecting a water pump and a pipe using a flexible joint according to an embodiment of the present invention, the step of disposing the pump in a position corresponding to the pipe, the pipe and Interposing the flexible joint between the pumps, fastening the flexible joint to the pipe and the pump through the fastening hole formed in the flange, respectively, and separating the fixing part.

In another embodiment, the clamp includes first and second clamp bodies having one end connected by a hinge, and a plurality of fixing pieces extending radially from the first and second clamp bodies and coupled to the fixing bolts. And, a locking means is provided to enable separation and coupling at the other ends of the first and second clamp bodies to release the locking means, and spread the other ends of the first and second clamp bodies to separate the fixing part.

In another embodiment, the clamp includes a first clamp body having a convexly curved first bent portion and a first connecting piece extending to both sides of the first bent portion, and a second bent portion and extending to both sides of the second bent portion a second clamp body having a second connecting piece that becomes And the bolt nut is fastened through the through-holes formed in the first and second connecting pieces to enable coupling, and the fixing part is separated by loosening the bolt nut fastened through the through-holes formed in the first and second connecting pieces.

According to any one of the means for solving the problems of the present invention described above, it is possible to suppress the transmission of vibrations generated by the pump to the building even if the fluid circulates through the pipes disposed indoors.

And, it is possible to extend the life of the excreted pipe.

In addition, it is possible to reduce the time and effort required to install the pipe, thereby reducing the cost required for construction.

However, the technical problems to be achieved by the present embodiment are not limited to the technical problems as described above, and other technical problems may exist.

1A is a perspective view of a flexible joint according to an embodiment of the present invention.
Figure 1b is a cross-sectional view of the front of the flexible joint according to an embodiment of the present invention.
2 is a plan view of a clamp according to an embodiment of the present invention.
3A is a plan view of a clamp according to another embodiment of the present invention.
FIG. 3B is a front view of the first clamp body and the second clamp body of FIG. 3A .
4 is a conceptual diagram illustrating a state in which a pump and a pipe are connected using a flexible joint according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And, in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

In this specification, the singular expression includes the plural expression unless the context clearly dictates otherwise.

In describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted.

In this specification, terms indicating a position or direction, such as 'top', 'bottom', 'left', 'right', 'before', 'after', etc. are only for describing the relative position or direction of an object, and the present invention do not limit

The accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed in the present specification is not limited by the accompanying drawings, and all changes and equivalents included in the spirit and scope of the present invention It should be understood to include water or substitutes.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1a is a perspective view of the flexible joint 10 according to an embodiment of the present invention, Figure 1b is a cross-sectional view of the front of the flexible joint 10 according to an embodiment of the present invention.

As shown in the drawing, the flexible joint 10 may include a connection part 100 , a pipe part 120 , and a fixing part 140 .

The connection part 100 is a part fastened with a pump and/or a pipe, and may be formed of a pair of flanges 102 that are spaced apart from each other by a predetermined distance and face each other.

The flange 102 may be formed in the form of a substantially circular plate in which a connection hole 104 is formed in the central portion, and a plurality of fastening holes 106 are formed around the connection hole 104 . The connection hole 104 and the fastening hole 106 may be formed through the thickness direction of the flange 102 .

The flange 102 of the flexible joint 10 is in close contact with the flanges respectively formed on the pump-side pipe and the pipe-side pipe, and may be fastened by bolt-nut coupling through the fastening holes of the flanges in contact with each other.

The pipe part 120 is in the form of a pipe forming a flow path through which a fluid such as water can flow. ) and may be coupled to the flange 102 in a state of communication.

Such a pipe part 120 may include a bellows 122 and a braid 124 surrounding it.

The bellows 122 is a corrugated pipe in which mountains and valleys are repeated with respect to the axial direction of the pipe part 120 , and may be formed of a metal material. Since the corrugated bellows 122 is capable of axial behavior such as extension and/or compression and diametric behavior such as bending, vibration generated when a fluid is introduced or flows into the bellows 122 by driving the pump. can absorb.

The braid 124 surrounding the bellows 122 may be formed in a form in which a steel wire is woven in a weave, and both ends may be coupled to the flange 102 while covering the bellows 122 .

The braid 124 may limit excessive movement of the bellows 122 and protect the bellows 122 from external impact.

The fixing unit 140 includes a clamp 142 and a fixing bolt 144, and the flexible joint 10 is one that can constrain the flexible joint 10 so that it cannot perform actions such as stretching, compression and bending. structures can be formed.

Clamps 142 may be provided as a pair of respectively surrounding both ends of the pipe part 120 , and each clamp 142 is one side of the pipe part 120 wrapped around the pipe part 120 at both ends of the pipe part 120 . It may be in close contact with the flange 102 .

The fixing part 140 may be coupled to the fixing bolt 144 to form a single structure for constraining the connection part 100 and the pipe part 120 . Specifically, one end of the fixing bolt 144 may be coupled to one clamp 142 , and the other end may be coupled to the other clamp 142 .

The fixing bolt 144 is provided as a rod-shaped bolt with threads formed on one end and the other end, or is provided with a rod-shaped threaded bolt on the whole, so that the spaced distance between the opposing clamps 142 can be adjusted. can be For example, both ends of the fixing bolt 144 may be bolted nut coupled through a through hole formed on the side of the clamp 142 to adjust the separation distance between the clamps 142 using tightening and loosening. .

Alternatively, the fixing bolt 144 may be provided as a pair of anchor bolts and a turnbuckle connecting them, and may be configured to adjust the spaced distance between the opposing clamps 142 . For example, a pair of anchor bolts are each fixed to the opposite clamp 142 side, and are configured to adjust the separation distance between the clamps 142 using the tightening and loosening of the turnbuckle coupled between the anchor bolts. can

A plurality of fixing bolts 144 may be provided at predetermined intervals along the circumference of the clamp 142 to provide a stable structure for the fixing unit 140 . For example, four fixing bolts 144 may be arranged at intervals of 90 degrees along the circumference of the clamp 142 , or three fixing bolts 144 may be arranged at intervals of 120 degrees.

In addition, the clamp 142 may be configured to be detachable from the pipe unit 120 . By providing such a configuration, it is possible to solve the problem of welding the flange with a bar-shaped iron or removing the welded iron from the flange after construction is completed.

2 is a plan view of a clamp 142 according to an embodiment of the present invention. As shown in the drawing, the clamp 142 includes a first clamp body 200 , a first clamp body 200 and a fixing piece 240 . ) may be included.

The first clamp body 200 may be provided with a convexly curved first curved portion 202 and a pair of first connecting pieces 204 that extend in a round shape from both sides of the first curved portion 202 . In addition, the second clamp body 220 may be provided with a convexly curved second curved portion 222 and a pair of second connecting pieces 224 extending in a round shape from both sides of the second curved portion 222 .

A through hole may be formed in the first connecting piece 204 and the second connecting piece 224 . The first clamp body 200 and the second clamp body 220 face each other, and the bolt nut passes through the through hole. It may be coupled to be separable by bonding. In this case, the first bent portion 202 and the second bent portion 222 may be bent in opposite directions to form a circular band to surround the pipe portion.

The fixing piece 240 may extend radially from the first clamp body 200 and/or the second clamp body 220 , and the first clamp body 200 and the second clamp body may correspond to the number of fixing bolts. A plurality of pieces may be formed at predetermined intervals along the circumference of 220 . For example, four fixing pieces 240 may be formed at intervals of 90 degrees around the first clamp body 200 and the second clamp body 220 , or three fixing pieces 240 may be formed at intervals of 120 degrees.

The fixing piece 240 may be provided in the form of a plate extending from the first and second clamp bodies 200 and 200 so as to be in close contact with the flange.

A through hole is formed at an end of the fixing piece 240 , and the fixing piece 240 and the fixing bolt may be coupled by the bolt nut coupling of the fixing bolt passing through the through hole. Alternatively, anchor bolts are formed on the fixing pieces 240 of the clamps facing each other, and the fixing pieces 240 and the fixing bolts may be coupled in such a way that the anchor bolts are connected with a turnbuckle.

3A is a plan view of a clamp 142 according to another embodiment of the present invention, and FIG. 3B is a front view of the first clamp body 300 and the second clamp body 320 of FIG. 3A .

As shown, the clamp 142 includes a first clamp body 300 and a second clamp body 320 and a second clamp body 300 and a second clamp body 320 connected by a hinged connection at one end of the first bent portion 302 and one end of the second bent portion 322 . 1 and 2 clamp bodies 300 and 320 may include a fixing piece 340 extending radially. The fixing piece 340 illustrated in FIG. 3 is the same as the fixing piece 240 illustrated in FIG. 2 , and a description thereof will be omitted.

A first coupler part 306 is formed in the first clamp body 300 in a portion (hinge part 310) where the first clamp body 300 and the second clamp body 320 are connected by a hinge coupling, 2 A second coupler part 326 may be formed on the clamp body 320 .

The first coupler unit 306 and the second coupler unit 326 may be configured to correspond to a female coupler and a male coupler or a male coupler and a female coupler, respectively.

The female coupler and the male coupler are provided in a structure in which the male coupler can be inserted/retracted into the female coupler in a specific direction, but not inserted/retracted in a direction different from the corresponding direction, so that the male coupler is inserted into the female coupler in a specific direction. Then, when placed in a direction different from the corresponding direction, a hinged connection can be formed.

The first clamp body 300 and the second clamp body 320 may be connected at one end by a hinge coupling, and at the other end by another locking means to enable separation and coupling.

The locking means includes, for example, a first connecting piece 304 extending from the other end of the first clamp and a second connecting piece 324 extending from the other end of the second clamp, and a first connecting piece 304 and a second connecting piece 324 . ) may be provided with a bolt passing through a through hole formed in each and a nut coupled thereto.

4 is a conceptual diagram illustrating a state in which the pump 400 and the pipe 420 are connected using the above flexible joint 410 according to an embodiment of the present invention. As shown, the pump 400 and the flexible joint 410 ) and the pipe 420 may be connected in series to form a flow path through which the fluid may flow.

In order to connect the pump 400 to the pipe 420 installed in the building, a pipe (pump pipe) provided to the pump 400 side corresponding to the pipe (piping pipe) positioned at the tip of the pipe 420 is located To do this, the pump 400 may be disposed at a position corresponding to the pipe 420 .

When the pump 400 is disposed, the flexible joint 410 may be interposed between the piping pipe and the pump pipe, and the flange formed on the piping pipe is in contact with the flange formed at one end of the flexible joint 410, and is formed in the pump pipe. The flange may be in contact with a flange formed at the other end of the flexible joint 410 . In this case, a ring-shaped gasket may be interposed between the flanges to maintain airtightness of the contacting surfaces.

Then, after passing the bolt through the through hole (fastening hole) formed in the flange, the contacting flange may be coupled by bolt-nut coupling.

And, when the coupling between the pump 400 and the flexible joint 410 and the pipe 420 is stably completed, the fixed part of the flexible joint 410 may be separated.

In one embodiment, a first clamp body and a second clamp body connected to each other by a hinge part at one end of the clamp, and a plurality of fixing pieces extending radially from the first and second clamp bodies and coupled to the fixing bolts, and a first, 2 In the case of a configuration including a locking means that enables the other ends of the clamp body to be separated and coupled to each other, after releasing the locking means, while the other ends of the first clamp body and the second clamp body are spread apart, the fixing part can be separated

In addition, the locking means includes a first connecting piece extending from the other end of the first clamp, a second connecting piece extending from the other end of the second clamp, and a bolt passing through a through hole formed in each of the first connecting piece and the second connecting piece, and coupled thereto In the case of a configuration including a nut, the locking means can be released while loosening the nut coupled to the bolt.

In another embodiment, the clamp includes a first clamp body having a convexly bent first bent portion and a first connecting piece extending to both sides of the first bent portion, and a second bent portion opposite to the first bent portion and both sides of the second bent portion A second clamp body having a second connecting piece extending therefrom, and a plurality of fixing pieces extending radially from the first and second bent portions and coupled to the fixing bolts, wherein the first and second clamp bodies are attached to the first and second connecting pieces. In the case of a configuration in which the bolt-nut is fastened through the formed through-hole, after releasing the bolt-nut coupling coupling the first and second connection pieces, the fixing part can be separated while the first clamp body and the second clamp body are separated .

The description of the present invention described above is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

10: flexible joint
100: connection
102: flange
104: connector
106: fastener
120: piping
122: bellows
124: braid
140: fixed part
142: clamp
144: fixing bolt
200: first clamp body
202: first bent portion
204: first connection piece
220: second clamp body
222: second bent portion
224: second connection piece
240: batten
300: first clamp body
302: first bent portion
304: first connection piece
306: first coupler unit
310: hinge
320: second clamp body
322: second bent portion
324: second connection piece
326: second coupler unit
340: fixed piece
400: pump
410: flexible joint
420: plumbing

Claims (10)

As a flexible joint for connecting a pump and a pipe,
a connecting portion provided with a pair of flanges having a connecting hole formed in the central portion and a fastening hole formed in the periphery;
A piping part for providing a bellows in a pleated shape, both ends of which are coupled to communicate with the connection hole of the flange between the opposing flanges, respectively, and a braid surrounding the outer periphery of the bellows and having both ends coupled to the flange; and
A pair of clamps surrounding the pipe part at both ends of the pipe part, and a plurality of fixing bolts coupled to the clamp so that the clamps are spaced apart from each other and closely adhered to the flange, respectively, are provided so as to be detachable from the pipe part a fixed part configured;
A flexible joint comprising a. The method of claim 1,
The clamp includes first and second clamp bodies having one end connected by a hinge, and a locking means is provided at the other end of the first and second clamp bodies to enable separation and coupling;
The clamp includes a plurality of fixing pieces extending radially from the first and second clamp bodies and coupled to the fixing bolts.
Flexible joint, characterized in that. 3. The method of claim 2,
The locking means includes first and second connecting pieces each extending from the other ends of the first and second clamp bodies, a bolt passing through a through hole formed in the first and second connecting pieces, and a nut coupled to the bolt. Flexible joint, characterized in that it comprises. The method of claim 1,
The clamp includes a first clamp body having a convexly curved first bent portion and first connecting pieces extending to both sides of the first bent portion, a second bent portion facing the first bent portion, and both sides of the second bent portion and a second clamp body having a second connecting piece to be
The first and second clamp bodies are fastened with bolts and nuts through through holes formed in the first and second connecting pieces to enable separation and coupling,
The clamp includes a plurality of fixing pieces extending radially from the first and second bending portions and coupled to the fixing bolts.
Flexible joint, characterized in that. 5. The method according to claim 2 or 4,
The fixing piece is a flexible joint, characterized in that configured to be in close contact with the flange. 5. The method according to claim 2 or 4,
The fixing bolt is provided as a rod-shaped bolt having threads formed at at least both ends, and the flexible joint is characterized in that it is fastened with a nut through a through hole formed in the fixing piece. 5. The method according to claim 2 or 4,
The fixing piece is a flexible joint, characterized in that consisting of three or four spaced apart at a predetermined angle. As a method for connecting a pump and a pipe using the flexible joint according to claim 1,
disposing the pump at a position corresponding to the pipe;
interposing the flexible joint between the pipe and the pump;
fastening the flexible joint to the pipe and the pump through the fastening hole formed in the flange, respectively; and
Separating the fixing part; including
A method for connecting the pump and piping. 9. The method of claim 8,
The clamp includes first and second clamp bodies having one end connected by a hinge, and a plurality of fixing pieces extending radially from the first and second clamp bodies and coupled to the fixing bolts,
A locking means is provided to enable separation and coupling at the other ends of the first and second clamp bodies,
The locking means is released, and the other ends of the first and second clamp bodies are spread apart to separate the fixing part.
A method for connecting the pump and piping. 9. The method of claim 8,
The clamp includes a first clamp body having a convexly curved first bent portion and a first connecting piece extending to both sides of the first bent portion, a second bent portion and a second connecting piece extending to both sides of the second bent portion a second clamp body and a plurality of fixing pieces extending radially from the first and second curved portions and coupled to the fixing bolts;
The first and second clamp bodies are fastened with bolts and nuts through through holes formed in the first and second connecting pieces to enable separation and coupling,
characterized in that the fixing part is separated by loosening the bolt nut fastened through the through hole formed in the first and second connection pieces
A method for connecting the pump and piping.

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