KR20140069831A - Clamp for coupling plumbing - Google Patents

Abstract

The present invention relates to a clamp for coupling pipes and, more specifically, a device for preventing a second pipe from being separated by being coupled to a flange to couple a first pipe to a second pipe. the clamp includes a body unit which includes one or more protruding corners from the inner circumference and one or more press units pressing the outer circumference of the second pipe. The present invention minimizes a slip regardless of the steel kinds so that the present invention can improve structural stability in a pipe joint.

Description

Clamp for coupling plumbing

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connection clamp, and more particularly, to a clamp that provides a clamping force when a pipe is connected.

In recent years, there has been a growing interest in the water quality of tap water, and the use of water pipes for stainless steel pipes, which are known to be the most suitable for water quality, has been attracting attention due to the importance of water quality problems.

Water pipes buried underground and supplying tap water should have corrosion resistance to protect the inside water quality, water tightness of connection part, prevention of separation by water pressure, convenience of construction, and structural stability in response to external environment change do. Stainless steel pipes are known to have material characteristics that best meet the requirements of such water pipes. When such a stainless steel pipe is small diameter 13A (0.8T) to 50A (1.2T), a rubber ring is inserted into a socket with a large pipe end and the pipe is pushed in, Can be used.

However, since the tube thickness of 2.0A or more is above 80A, it is impossible to perform the field work in the press type. At this time, it is very difficult to weld a pipe having a diameter of 80 A or more to a work site, requiring a skilled welding technician, and the work process is delayed.

Therefore, it is difficult to carry and install the cast iron pipe because the weight of the cast iron pipe is heavy, and there is a problem that the rust is generated around the branch hole when the branch pipe is formed. There is an inconvenience that the coating process of the coating layer is performed, and the manufacturing cost is excessively generated.

In order to solve such conventional problems, there has been proposed a stainless steel pipe for waterworks (hereinafter referred to as prior art) of Korean Patent No. 10-0999881. The prior art is characterized in that a synthetic resin coating layer is formed on the outer surface of the stainless steel pipe.

However, since a synthetic resin coating layer is formed on the outer surface of the stainless steel pipe, there is a problem in that the manufacturing cost is high. In the connecting operation between the stainless steel pipes, a preceding work for bonding the fixing band to the outer diameter of the pipe- Since it is necessary to use a dedicated work tool for connection, it is troublesome to work, and improvement is required.

In addition, the stainless steel pipe has a high rigidity, so that it is relatively difficult to fix the clamps for connecting the joints, thereby making active piping work in the field difficult.

SUMMARY OF THE INVENTION The present invention has been made to overcome the problems of the conventional techniques.

The present invention provides a pipe connecting means capable of fixing a pipe to be connected without slippage regardless of the type of steel.

Further, the present invention provides a piping connection means that can easily fix a pipe without any prior work.

The present invention also provides a piping connection means having a structure that can easily increase the clamping force as needed.

The present invention also provides a piping connection means capable of maintaining structural stability in response to changes in the surrounding environment such as soil erosion.

The clamp according to the present invention includes at least one edge protruding from an inner circumferential surface of the clamp, and the outer circumferential surface of the second pipe is connected to a flange for fastening a second pipe to the first pipe. And a clamping body portion having at least one pressing portion for pressing the pressing portion.

The pressing portion may be formed of any one of a cone, a truncated cone, a polygonal pyramid, and a polygonal pyramid.

Further, the pressing portion may be arranged such that the apex of the horn is directed toward the releasing direction of the second pipe and the underside of the horn is directed toward the insertion direction of the second pipe.

And a pressing portion fixing member provided on the inner circumferential surface of the clamping body portion and adapted to receive a remaining portion of the pressing portion such that at least a part of the pressing portion is exposed in the center direction of the clamping body portion.

Further, the pressing portion fixing member may be formed of a synthetic resin material. Furthermore, the pressing portion fixing member may be formed to have a predetermined elasticity in the center direction of the second pipe.

The clamping body accommodating portion may be formed on the inner circumferential surface of the clamping body portion so as to have a predetermined depth to allow the pressing portion fixing member to be detached from the outside.

A fixing protrusion may be formed at one end of the outer circumferential surface of the clamping body portion.

Further, the fixing protrusions may be provided at least two or more at regular intervals.

Further, the other end of the outer circumferential surface of the clamping body may be provided with a hook formed in a ring shape so that the fixing protrusion is caught.

Furthermore, the fixing protrusion can be fastened by penetrating the hook portion from the inside to the outside.

Further, the clamping body may be formed by combining at least two assembling members formed in an arc shape.

Further, each of the end portions of the assembling member may have an outwardly extending extension portion and a fastener for fastening between the assembling member and the extension portion.

Furthermore, at the time of assembling the clamping body, any one of the pair of adjacent extension portions may be provided with a spacing portion for separating the pair of extension portions.

The first pipe and the second pipe may be formed of stainless steel.

In addition, any one of the first pipe and the second pipe may be a straight pipe, a T pipe, or an L pipe.

At least one of the first pipe and the second pipe may be a stainless steel pipe.

Further, at least one of the first pipe and the second pipe may be a non-coated steel pipe.

Further, the pressing portion may be integrally formed on the inner circumferential surface of the clamping body portion.

Further, the pressing portion of the pressing portion may be formed in a shape of at least a part of any one of a cone, a truncated cone, a polygonal pyramid, and a polygonal pyramid, and the corner between the bottom surface and the side surface may protrude toward the center of the second pipe.

According to the present invention, the occurrence of slippage can be minimized irrespective of the type of steel, thereby increasing the structural stability of the pipe joint.

In addition, according to the present invention, stainless steel having a poor workability in the field can be installed in the field without any prior work, thereby improving not only the efficiency of work but also the sanitary property of the pipe itself.

Further, according to the present invention, there is no fear of erroneous potential difference between different materials by using the same material such as stainless steel for pipes, flanges, clamps and the like used for piping.

According to the present invention, there is no need to additionally apply paint or Pe coating on the surface of the piping for the purpose of improving the fixation force, and the stability is high because there is no corrosion due to surface scratches caused by peeling or peeling of the coating.

Further, according to the present invention, by providing a functional fitting having a relatively large movable angle in correspondence with the subsidence of the ground or the like, by using a hooking structure between the clamps or between the clamp and the flange on the basis of such improved fixing force, Is excellent in structural stability.

Further, according to the present invention, since the clamp is easily installed in the field, an L-shaped or T-shaped pipe or the like, which requires a large amount of pipe separation blocking force, can be provided with a plurality of clamps continuously, thereby achieving structural stability.

1 is a perspective view showing a pipe connecting flange and a clamp according to an embodiment of the present invention.
2 is a perspective view showing a partially cutaway view of a flange according to an embodiment.
FIG. 3 is an incisional perspective view illustrating an incision along a central axis of the flange according to one embodiment.
4 is a perspective view illustrating a first packing according to an embodiment.
5 is a cross-sectional view of a first packing in accordance with one embodiment.
6 is a cross-sectional view showing a state in which the flange is cut along the central axis according to an embodiment.
7 is a perspective view showing a clamp according to an embodiment.
8 is an exploded perspective view showing a clamp according to an embodiment.
9 is an enlarged view showing a state of a pipe which is pressurized by a pressurizing portion and a pressurizing portion according to an embodiment.
10 is a perspective view showing a pipe connected to a flange and a clamp according to an embodiment.
11 is a perspective view showing a clamp according to another embodiment.
12 is an exploded perspective view showing a clamp according to another embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the absence of special definitions or references, the terms used in this description are based on the conditions indicated in the drawings. The same reference numerals denote the same members throughout the embodiments. For the sake of convenience, the thicknesses and dimensions of the structures shown in the drawings may be exaggerated, and they do not mean that the dimensions and the proportions of the structures should be actually set.

The piping connecting apparatus according to the present invention will be described with reference to Fig. 1 is a perspective view showing a pipe connecting flange and a clamp according to an embodiment of the present invention.

The pipe connecting apparatus according to the present invention includes a flange 20 and a clamp 10 as shown in Fig. The flange 20 is a component that is fixed to a pipe by welding or the like by a preliminary operation or the like and receives the end portion of another pipe to be connected to provide a watertight structure.

The flange 10 is engaged with the flange 20 and functions to fix the pipe inserted in the flange 20 so as not to come off. In this case, each of the pipes may be a straight pipe, a T-shaped pipe or a L-shaped pipe or a valve, or an end thereof, and the present invention is not limited by the type of pipe. Hereinafter, each component will be described in detail.

The flange according to the present invention will be described with reference to Figs. 2 to 6. Fig. FIG. 2 is a perspective view showing a partially cutaway view of a flange according to one embodiment, and FIG. 3 is a cutaway perspective view showing a cutaway view along a central axis of a flange according to an embodiment. 5 is a cross-sectional view of the first packing according to one embodiment. FIG. 6 is a cross-sectional view of the first packing taken along the central axis of the flange according to an embodiment of the present invention. Fig.

Referring to FIG. 2, the flange 20 according to the present embodiment includes a body portion 200 forming an outer housing and a packing portion 250 forming a watertight structure between the accommodated pipe.

The body portion 200 is formed into a hollow tubular shape as shown in FIGS. The first packing receiving portion 201, the second packing receiving portion 202, and the insertion restricting portion 205 are formed on the inner circumferential surface of the body portion 200 from the upper side with reference to the drawing.

The first packing receiving portion 201 is formed as a constant space portion formed by protruding outwardly from the inner peripheral surface of the body portion 200. The first packing receiving portion 201 receives the first packing 260 to be described later and fixes the first packing 260 on the inner circumferential surface of the body portion 200.

The second packing accommodating portion 202 is formed as a space between the first protrusion 202 and the second protrusion 204 protruding inwardly around the inner circumferential surface of the body portion 200. A second packing 270, which will be described later, is received in the second packing receiving portion 202 and fixed on the inner peripheral surface of the body portion 200.

The insertion restricting portion 205 restricts the insertion depth of the pipe inserted in the direction of the second packing accommodation portion 202 from the first packing accommodation portion 201 side. The insertion restricting portion 205 is formed so as to protrude inwardly around the inner circumferential surface of the body portion 200. The insertion restricting portion 205 may have an extended portion 206 protruding upward along the central axis direction. The extension 206 functions to restrict movement of the inserted pipe or to prevent the third packing 280 provided between the pipe and the pipe from being separated.

In addition, a hook-shaped first fixing protrusion 220 may be formed at an upper end of the body 200, that is, at an end of the pipe on which the pipe enters.

Hereinafter, as shown in FIG. 3, for convenience of description, a section in which the pipe 1 is inserted and received in the body 200 is referred to as a first accommodating portion P1. A portion where the other pipe connected to the pipe 1 is received and fixed is referred to as a second receiving portion P2. At this time, the other pipe may be fixed to the welded portion 209 provided at the end of the second accommodating portion P2 by welding. However, the flange according to the present invention can use not only such a welding method but also a conventional pipe fastening method such as a screw fastening method.

As shown in FIG. 2, the second packing 270 is formed in a ring shape. At this time, the inner circumferential surface of the second packing 270, that is, the surface in contact with the pipe may be curved. The third packing 280 is formed in a ring shape. Further, the third packing 280 is formed with an end packing portion 281 extending inwardly from one end thereof, and has an L-shaped cross section. The end packing portion 281 contacts the end portion of the pipe to form a watertight structure.

As shown in FIG. 4, the first packing 260 is formed with a plurality of fluid receiving grooves 262 formed in the pressing direction D1. The fluid receiving groove 262 receives the fluid in the flange 200 and expands when the pressure of the fluid increases to expand the first packing 260 itself. Further, the flange 200 including the first packing 260 can be shrunk to a certain extent when the pipe 1 is received at the time of construction, so that the pipe 1 can be inserted without a separate tool .

At this time, the fluid receiving hole 262 may have an elliptical shape or a spindle shape as shown in FIG. In this case, it is preferable that the long axes a1 and a2 of the fluid receiving hole 262 are formed so as to be directed to the central axis Q of the first packing 260. When the fluid receiving hole 262 is formed in an elliptical shape or a spindle shape, the fluid passage hole 262 is compressed.

Meanwhile, a reinforcing ring 265 inserted into the fluid receiving groove 262 may be further provided to increase the effect. As shown in Fig. 4, the reinforcing ring 265 is formed in a ring shape corresponding to the shape of the flow passage receiving groove 262 on the outer circumferential surface. The reinforcing ring 265 reinforces the rigidity of the fluid receiving groove 262 so that a constant flow path can be maintained even when the reinforcing ring 265 is compressed by an external force.

In order to enhance the effect of reinforcing the watertight structure by accommodating and expanding the fluid, an inner space portion 263 connecting the inner ends of the fluid receiving hole 262 may be further formed as shown in FIG. The inner space portion 263 in this embodiment is surrounded by the inner side of the first packing 260 and is fluidly connected with the fluid receiving hole 262.

Further, a cutout 264 can be formed between the inner space 262 and the outer side. The incisional reduction 264 may be used in the process for forming the inner space portion 262 or in the case of inserting various other members on the inner space portion 262. [ The incision 264 may also function to assist the inflow of the fluid onto the inner space 262 when the external pressure greatly increases by cutting the V-shaped from the outside.

On the other hand, the inner space portion 262 can be filled with a hygroscopic expansion portion of hygroscopic material. The hygroscopic expansion unit expands the volume when the fluid is absorbed, so that the hygroscopic expansion unit expands more than when only the fluid is introduced into the inner space 262, thereby enhancing the watertight structure.

Referring to FIG. 6, it is preferable that the inner space 262 is formed such that the minor axes B1 and B2 are directed toward the central axis of the pipe 1. When the fluid flows into the inner space 262 and the pressure is increased, the pressure is concentrated in the direction of the short axes B1 and B2 and the most expanded. That is, when the short axes B1 and B2 are formed so as to face the central axis of the pipe 1, the first packing 260 expands most to the pipe 1 side, thereby further enhancing the watertight structure.

As described above, when the fluid pressure in the pipe 1 rises, the fluid flows out through the end of the pipe 1 and then proceeds between the outer peripheral surface of the pipe 1 and the inner peripheral surface of the flange 260, Reaches the first packing (260) through the packing (280) and the second packing (270). In this case, when the third packing 280 and the second packing 270 sequentially form a watertight structure and a relatively large pressure is generated as the pressure of the fluid instantaneously increases, the first packing 260 The watertight structure is maintained. That is, when a weak water impact or a low fluid pressure is generated, the second packing 270 and the third packing 280 correspondingly maintain the watertight structure, and when a high water impact or a high fluid pressure is generated, 1 packing 260 corresponds to the watertight structure.

A clamp according to an embodiment will be described with reference to Figs. 7 to 10. Fig. FIG. 7 is a perspective view showing a clamp according to an embodiment, and FIG. 8 is an exploded perspective view showing a clamp according to an embodiment. FIG. 9 is an enlarged view of a pipe which is pressurized by a pressurizing unit and a pressurizing unit according to an embodiment. FIG. 10 is a perspective view showing a pipe connected to a flange and a clamp according to an embodiment.

The clamp 10 includes a clamping body portion 110 and a pressing portion 160.

As shown in Figs. 7 and 8, the clamping body portion 110 is formed by fixing a pair of arc-shaped forming members against each other. A second fixing protrusion 120 is formed at one end of the outer circumferential surface of the clamping body portion 110. The second fixing protrusions 120 are used for connecting and connecting between adjacent clamps when a plurality of clamps are continuously connected to fix the pipe. A plurality of second fixing protrusions 120 may be provided at regular intervals. On the other hand, at the other end of the outer circumferential surface of the clamping body 110, a hook 130 formed in a ring shape is formed so that the second fixing protrusion 120 can be engaged and fastened. The second fixing protrusions 120 penetrate from the inside to the outside of the hook portion 130 of the other clamp, thereby connecting the two clamps.

Each of the assembling members constituting the clamping body 110 is formed with an extension 140 at both ends thereof. The extension portion 140 is formed to extend outward from both ends of each of the assembling members. The extension 140 is formed with a fastening hole 141 through which the bolt can be received. 8, the clamping body portion 110 is fixed in such a manner that the bolts 171 pass through the respective fasteners 140 and then the nuts 172 are fastened to the corresponding bolts 171. As shown in FIG. On the other hand, at the time of assembling the clamping body 110, each of the pair of adjacent extension portions 140 is formed with a spacing portion 142 for separating the pair of extension portions 140 from each other. The spacing portion 142 separates the extension portion 140 so as to form a gap that can be adjusted by the bolt 171 and the nut 172. [

Because of such a connection between the clamps or between the clamp and the flange, it is possible to install as many clamps as needed on the spot quickly and easily.

On the inner circumferential surface of the clamping body portion 110, a fixing member receiving portion 111 for receiving the pressing portion fixing member 150 is formed. The fixing member receiving portion 111 is formed so as to be stepped at a predetermined depth with respect to the other inner circumferential surface, thereby preventing the received pressing portion fixing member 150 from being deviated to the outside.

The pressing portion fixing member 150 is formed of synthetic resin material and is formed such that the pressing portion 160 is inwardly exposed to the inside. The pressing portion fixing member 150 may be formed to have elasticity in the direction of the center of the pipe.

The pressing portion 160 may be formed in a shape of a horn formed in a circular or polygonal shape in its vertical section, or a truncated cone or polygonal prism in a vertex. The pressing portion 160 presses the inner pipe when the clamping body portion 110 is tightened, thereby fixing the pipe so that the pipe does not slip off. At this time, it is preferable that the pressing portion 160 is provided so that the apex of the horn is directed in the direction in which the pipe is separated, and the bottom of the horn is oriented in the direction in which the pipe is inserted. In this case, the pipe is easily inserted, while being pressurized by the corners of the bottom of the horn shape, thereby forming an environment in which the pipe is difficult to separate. The horn-bearing pressing portion has the effect of fixing the pipe without slipping even in the case of a pipe formed of a material having high rigidity such as stainless steel.

Referring to FIG. 9, the pressing portion 160 according to the present embodiment presses the pipe 1 by the edge provided between the bottom surface and the side surface. That is, when the pressure is applied, the pipe 1 is formed with a groove 5 having an angular shape corresponding to the side surface and the bottom surface of the pressing portion 160. 9A, this edge-shaped groove 5 has a curved first side surface 5a corresponding to the side surface of the pressing portion 160 and a second flat surface side surface (corresponding to the bottom surface of the pressing portion 160) 5b. The first side face 5a is arranged in the direction D2 in which the pipe 1 is separated and the second side face 5b is arranged in the direction opposite to the direction D2 in which the pipe 1 departs, Are inserted. At this time, it is preferable that the first side surface 5a is formed at an acute angle relative to the outer peripheral surface of the pipe 1, and the second side surface 5b is formed vertically or relatively perpendicular to the outer peripheral surface of the pipe 1. In this case, when the pipe 1 is to be separated from the clamp, the second side face 5b is caught by the pressurizing portion 160 or penetrated into the pipe 1, In the case of insertion into the clamp, the pushing portion 160 can be easily inserted on the first side face 5a formed at a relatively acute angle.

On the other hand, referring to an enlarged view of FIG. 9B, conventionally, only a V-shaped groove is formed by using a projection protruding in a wedge shape. In this case, the grooves 6 formed are V-shaped in cross-sectional shape, so that the fixing ability of the clamps is poor, and it is difficult to fix the pipe such as the stainless steel pipe without any prior work.

Referring to Fig. 10, the pipe 1 may be inserted and accommodated in the flange 20, and then fixed with a number of clamps 10 according to the required fixing force. At this time, another pipe can be fixed to the welded portion 209 of the flange 20 by welding or the like to form a continuous flow path.

11 and 12, a clamp according to another embodiment will be described. FIG. 11 is a perspective view showing a clamp according to another embodiment, and FIG. 12 is an exploded perspective view showing a clamp according to another embodiment.

The clamp 10a according to the present embodiment differs from the previous embodiment in that there is no pressing portion fixing member inside the clamping body portion 110a.

That is, in this embodiment, the pressing portion 160a is formed directly on the inner peripheral surface of the clamping body portion 110a. The pressing portion 160a in this embodiment protrudes from the inner circumferential surface of the clamping body portion 110a in a shape in which the horns are cut in half in the longitudinal direction. At this time, the pressing portion 160a may be formed in one row along the inner circumferential surface, and may be provided so as to intersect in the longitudinal direction as shown in FIG. 11 to improve the fixing force.

When the clamping body portion 110a is assembled, it is assembled without the pressing portion fixing member as shown in Fig. When the bolts 171 and the nuts 172 are fastened after being fastened through the fastening tool 141, the pressing portion 160a presses and fixes the inner pipe. Components other than the fixing portion 160a are the same as those of the above-described embodiment, and therefore, detailed description thereof will be omitted.

As described above, the flange and the clamp for connecting pipes according to the present invention improve the sealing force corresponding to the fixing force and the water impact, respectively, compared with the conventional device, so that the stainless steel pipe can be easily installed without any prior work or coating operation have.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, . ≪ / RTI >

10: Clamp 20: Flange
120: fixing projection 130:
150: pressing portion 160: pressing portion fixing member
200: body part 250: packing part
262: Fluid receiving hole 263: Inner space part
264: Improve section

Claims (20)

An apparatus connected to a flange for fastening a second pipe to the first pipe to prevent disengagement of the second pipe,
And a clamping body portion having at least one corner protruded on an inner circumferential surface thereof and having at least one pressing portion for pressing an outer circumferential surface of the second pipe. The method according to claim 1,
Wherein the pressing portion is formed of a cone, a truncated cone, a polygonal pyramid or a polygonal pyramid. 3. The method of claim 2,
Wherein the pressing portion is arranged such that the apex of the horn is directed toward the releasing direction of the second pipe and the undersurface of the horn is directed toward the inserting direction of the second pipe. 3. The method of claim 2,
And a pressing portion fixing member provided on the inner circumferential surface of the clamping body portion and adapted to receive a remaining portion of the pressing portion such that at least a part of the pressing portion is exposed in a center direction of the clamping body portion. 5. The method of claim 4,
Wherein the pressing portion fixing member is formed of a synthetic resin material. 6. The method of claim 5,
Wherein the pressing portion fixing member has a predetermined elasticity in the direction of the center of the second pipe. 5. The method of claim 4,
Wherein the clamping body accommodating portion is formed on the inner circumferential surface of the clamping body portion so as to have a predetermined depth stepped portion to receive the pressing portion fixing member so as not to be detached to the outside. The method according to claim 1,
And a clamping protrusion is formed at one end of the outer circumferential surface of the clamping body portion. 9. The method of claim 8,
Wherein at least two of the fixing protrusions are provided at regular intervals. 10. The method according to claim 8 or 9,
And a hook portion formed in a ring shape so that the fixing protrusion is caught is provided on the other end portion of the outer circumferential surface of the clamping body portion. 11. The method of claim 10,
And the fixing protrusion is engaged by penetrating the hook portion from the inside to the outside. The method according to claim 1,
Wherein the clamping body portion is formed by joining at least two assembling members formed in an arc shape. 13. The method of claim 12,
Wherein each of the end portions of the assembling member has an outwardly extending extension portion and a fastening hole for fastening between the assembling member and the extension portion. 14. The method of claim 13,
Wherein the clamping body portion is formed with a spacing portion for separating the pair of extension portions from each other when the clamping body portion is assembled. The method according to claim 1,
Wherein the first pipe and the second pipe are formed of a stainless steel material. The method according to claim 1,
Wherein one of the first pipe and the second pipe is a straight pipe, a T pipe, or an L pipe. The method according to claim 1,
Wherein at least one of the first pipe and the second pipe is a stainless steel pipe. 18. The method of claim 17,
Wherein at least one of the first pipe and the second pipe is a non-coated steel pipe. The method according to claim 1,
Wherein the pressing portion is integrally formed on the inner circumferential surface of the clamping body portion. 20. The method of claim 19,
Wherein the pressing portion is formed in a shape of at least a part of any one of a cone, a truncated cone, a polygonal pyramid, and a polygonal pyramid, and the corner between the bottom surface and the side surface protrudes toward the center of the second pipe.

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