KR20160086657A

KR20160086657A - pipe joint device

Info

Publication number: KR20160086657A
Application number: KR1020150004293A
Authority: KR
Inventors: 허원권
Original assignee: 주식회사 퍼팩트
Priority date: 2015-01-12
Filing date: 2015-01-12
Publication date: 2016-07-20

Abstract

The present invention relates to a pipe connecting apparatus comprising a socket tube with a flange protruding along the rim of each end, a packing ring in close contact with the flange, and a clamp of a circular arc structure separated into at least two rings in the form of a ring, A pair of engaging portions which are vertically protruded from the respective ends of the arc on the front surface and in which at least two pairs of engaging portions which are in contact with each other when the clamps are engaged with each other in a ring- Each arm tightening ring is protruded in a front direction from the both sides of the thickness of the fastening part to the fastening part contacting the both sides of the thickness of the fastening part, ('T') protruding in the lateral direction and formed to be able to engage with male locking loops between the male locking loops protruding from both sides of the engaging portion thickness, so that the female locking loops of the clamp After the gun tube connected at the hinge flange and the state wrapped around the inserted seal ring, it can be bolted to the bolt holes facing portion bonded to each other, to clamp to facilitate coupling.

Description

Pipe joint device}

In general, synthetic resin pipes embedded in the ground are mainly used for transporting non-pressurized fluids such as water and sewage, and for protecting the outside of wiring for wires and various cables. This is made of a synthetic resin material and is light and corrosion- In addition, it has excellent moldability and low price, and is used for various purposes. It is widely used for a wide range of applications ranging from everyday objects such as water supply and sewage pipes to various industrial facilities.

Such synthetic resin pipes are usually manufactured in a predetermined length unit to facilitate their manufacture, storage, and transportation. In the field construction of such synthetic resin pipes, the synthetic resin pipes of length units are continuously connected directly in the field, The method of joining such a synthetic resin pipe may include a method of thermally bonding a synthetic resin pipe tangentially adjacent to the synthetic resin pipe, or a method of joining by using a bolt and a nut.

For example, in Korean Patent Registration No. 966786 filed by the present invention, a socket tube having a flange formed at one side thereof and a clamp for pressing a flange side of the socket tube are formed at one side while a synthetic resin tube is closely inserted into the tube, The synthetic resin pipe which is in close contact with the inside of the flange of the socket tube and the one end of the socket tube is thermally fused and connected to the inside of the flange of the socket tube, The connection between the flange and the tightening rubber ring of the synthetic resin pipe is tightly connected to each other by the socket pipe and the clamp, Or external force transmitted from the outside to the synthetic resin pipe does not break, The connection structure of a synthetic pipe using a socket tube and a clamp ', which prevents watertightness and deterioration of a synthetic resin pipe by maintaining the tightness of the connection part due to the elastic force of the tightening rubber ring connected through the clamp even if the pipe repeatedly shrinks and expands .

1. Registration number / date 1009667860000 (June 22, 2010)

However, the 'connection structure of the synthetic pipe using the socket pipe and the clamp' and the pipe connection device using the socket pipe have a problem in that when the socket pipe has a straight cylindrical pipe structure, a connection jaw is formed along the inner periphery, It is difficult to connect a tube that is fixed to the pipe between the two tubes fixedly inserted and fixed to the socket tube only up to the latching jaw.

In addition, conventionally, in the method of connecting pipes, a pipe to be connected to the inside of the socket tube is forcedly inserted into the pipe after fixing the socket tube by fixing each constitution by heat fusion, snap fitting or coupling means of the piece. There is a problem that forced fitting is not easy. In the conventional method of joining the components by heat fusion and connecting the pipes to be connected by heat welding, the joint parts are weakly separated by external force, and a thermal adapter is required separately And it takes a lot of time for the work, and there is a problem that the water-tightness and the connection safety are deteriorated due to the occurrence of cracks in the heat-welded portions depending on the skill of the welder.

A conventional method of joining pipes to be connected using a bolt-nut coupling is to connect the flanges of neighboring pipes to each other by bolting. This requires that the flange is integrally formed at both ends of the pipe when manufacturing the pipe, Since the flange can not be joined uniformly on the entire surface due to its fixed side, it can easily break the joint part of the flange, weaken the post-machining area of the flange, The synthetic pipe is repeatedly shrunk and expanded due to the temperature difference due to the repeated expansion and contraction of the flange. As a result, one side of the flange having high strength is not able to withstand such a contraction and expansion, resulting in leakage and breakage .

In addition, a method of inserting and fixing an expanded portion of a tube to enlarge one side of the tube is generally used because the tube portion is not expanded to an exact size, so that when inserting the end portion of a neighboring tube into the tube portion, The rubber packing installed inside is frequently torn by the end portion of the synthetic resin pipe, and once the connected pipe can not be loosened and connected again, the synthetic resin pipe is formed separately, such as forming a bending portion or forming a thread for easy coupling. There is also a problem that manufacturing time and manufacturing cost are increased.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a socket having a straight cylindrical pipe structure with no protrusion protruding along the inner periphery, A packing ring closely fitted to the flange with a tube to be connected to the inside thereof being inserted; A flange and a packing ring are enclosed and fixed at both ends of a semicircle, and a bolt hole is formed in a vertically protruding outer side of the circle while a bolt hole is drilled, And a clamp having a male coupling ring or a male coupling ring formed at a coupling portion of the one end, wherein the arm coupling ring is formed in a ring shape at both sides of the coupling portion, 'L'), and the male locking ring is protruded from the center of the thickness of the coupling part to the side of the 'T', so that the male locking ring can be formed between the female locking rings protruding from both sides of the thickness of the locking part. The flange and the packing ring in which the pipe to be connected is inserted can be bolted to the bolt hole of the engaging portion which is in contact with each other after the flange and the packing ring are inserted in the clamping ring of the clamp, The socket tube can be moved back and forth in the fixed connection pipe, so that a new pipe connection between the two fixed pipes is made easy.

The flange is protruded obliquely along the rim of the socket tube. The packing ring forms a sloped surface on the flange side, and a pressure-sensitive portion gently protruding toward the flange rim side is formed. The flange is formed with a groove portion into which the flange and the packing ring are inserted. And the flange side of the groove portion is formed with a pressing portion of an inclined surface extending from the flange end to be fitted into the groove portion to the inner surface of the packing ring, The packing ring pushes the pressured portion of the packing ring toward the flange side so that the packing ring is more tightly adhered to the pipe connected to the flange on the flange side inclined surface to improve the airtightness.

In addition, a bolt head fixing portion corresponding to the polygonal head bolt type protruding from the bolt hole rim is formed in one coupling portion of the pair of coupling portions contacting with each other in the ring-shaped clamp, The head bolt is not rotated, so that nut coupling is easy.

As described above, in the pipe connecting apparatus including the socket pipe of the straight cylindrical pipe structure which does not have the hooking protrusion protruding along the inner periphery, a specific portion of the straight pipe which is buried and fixed is cut and the broken portion is cut out, When a new tube is connected to the genital area, the socket tube can be moved back and forth in a fixed tube, so that the socket tube is not pushed out of the fixed tube, and then a new tube is connected to the cut- , It is possible to move the socket pipe to the middle of the pipe to be connected to the fixed pipe, and then to fasten the clamp.

In the clamp of the circular arc with the fastening portion protruded at each end of the pipe connecting device, when the clamp is engaged in the ring form, of the at least two pairs of the fastening portions, And a male fastening ring protruding from the center of the thickness and a male fastening ring protruding from the center of the male thread to the side of the female fastening ring are formed on both sides of the female fastening piece, When the male fastening ring is hung, it becomes a hinge state, and it is easy to combine the flange and the packing ring in the form of a smear ring.

In other words, the arms of the female and male coupling rings protrude in the tangential direction of the respective ends of the arc from both sides of the thickness, and are bent in a vertical direction to the outside of the circular arc, A portion protruding vertically from the outside of the circle is inserted, and a portion of the lateral protrusion protruding from both sides in the thickness direction is inserted, a portion protruding vertically from the center of the thickness of the male fastening ring is inserted between the female fastening rings on both sides of the thickness, It is easy to form a hinged state by engaging a male fastening ring on the female fastening ring by hanging the portion protruded to both sides of the female fastening ring outwardly and outwardly of the arm, It is easy to collect, and when it is spread out from the circle, it is easily separated and the clamp can be easily joined and separated.

When the clamp clamps the flange and the packing ring in a ring shape and clamps the flange and the packing ring, the clamp which is pulled on the flange outer surface protruding obliquely pushes the portion of the packing ring protruding from the packing ring toward the flange portion side to the pressing portion of the clamp, The packing ring is more tightly attached to the tube to be connected to the flange on the inner surface of the flange protruding obliquely, thereby improving the airtightness.

In addition, since the bolt head fastening portion corresponding to the head of the polygonal head bolt is protruded to the bolt lifting edge, the polygonal head bolt inserted into the bolt head fixing portion is not rotated, and the nut coupling is facilitated.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a pipe connecting apparatus to which pipes are connected in accordance with an exemplary embodiment of the present invention; Fig.
2 is an exploded perspective view of a pipe connecting device according to an example of the present invention;
3 is a side cross-sectional view of a tube connecting device according to an example of the present invention;
Figure 4 is a clamped perspective view of an example of the present invention.
5 is a side view of the use of a pipe connecting device according to another example of the present invention.

The pipe connecting apparatus according to the present invention comprises a socket pipe, a packing ring, a clamping pipe, and a pipe connecting the flange of the socket pipe and the packing ring by a clamp connection after inserting a connecting pipe into which the packing ring is inserted into the socket pipe. The following will be sequentially described.

2, the socket tube 110 includes a flange 111 in a conventional socket tube structure in which a tube 200 connected to the inside is inserted and a flange 111 protrudes along the rim of each end, Protrudes obliquely along the rim of the socket tube 110, so that the outer surface and the inner surface of the flange 111 form an inclined surface.

In addition, the socket tube 110 is preferably a straight pipe structure having no protrusion protruding along the inner periphery, and may be formed in a straight line structure such as an elongated L, a Y, a tee, (200) to be connected to the center of the socket tube (110) so that the tube (200) to be connected to the vicinity of the center of the socket tube (200) The protruding hook 112 may be formed.

Here, the socket tube 110 can be freely moved and connected to the stopper 112 at each end of the socket tube 110 when the stopper 112 protrudes along the inner periphery of the socket tube 110 And at least one of the pipes 200 to be connected is prevented from being easily released so that the pipe to be buried for the first time is generally easily connected. However, in order to repair the broken pipe, Since the tube 110 protrudes from the tube 200 or the tube 200 to be connected and fixed, it is difficult to connect the tube 200 that is perfect to the portion where the tube 110 is broken and cut. Of the socket tube 110 is preferable.

A part of the packing ring 130 which is pushed toward the center of the socket tube 110 by the clamp 120 forms a groove along the inner circumference at the point where the flange 111 protrudes from the socket tube 110 To be accommodated.

2, the packing ring 130 has a normal packing ring structure in which the tube 200 to be connected to the inside is closely fitted to the flange 111 while being inserted therein. As shown in FIG. 3, (130) forms a slant surface toward the flange (111) side, and a pressured portion (132) gently protruding toward the other side of the flange (111) is formed.

3 (A), the inner surface of the packing ring 130 which is in contact with the pipe 200 to be connected is formed to be slightly smaller than the outer diameter of the pipe 200 to be connected to the flange 111, The inner surface of the end face of the packing ring 130 is inclined so that the inner diameter of the other side of the flange 111 is equal to or close to the outer diameter of the pipe 200 to be connected, 131a) 131b are formed.

The watertight protrusions 131a and 131b have a first watertight protrusion 131a formed on the side of the flange 111 and a second watertight protrusion 131b formed on the flange 111 side of the first watertight protrusion 131a, ) Is preferably formed.

The packing ring 130 has an inclined surface on the side of the flange 111. The inclined surface of the packing ring 130 on the side of the flange 111 is a packing ring 130 of the flange 111, as shown in the cross section.

The other side of the packing ring 130 on the flange 111 forms a constant length on the inner surface of the packing ring 130 and forms an inclined surface to the outer surface of the packing ring 130. In the enlarged view of FIG. An imaginary line extending straight from the other end of the flange 111 on the inner surface of the packing ring 130 to the other end of the flange 111 on the outer surface of the packing ring 130 Portion of the packing ring 130 is the pressure-receiving portion 132 of the packing ring 130. [

The pressure receiving portion 132 may protrude from the other end of the flange 111 on the outer surface of the packing ring 130 to an inclined surface or may protrude with a gentle circular arc cross section and may protrude from the inner surface of the packing ring 130 and the flange 111, It may be formed so as to correspond to the inner inclined surface of the pipe 200 and the flange 111 to connect the side inclined surfaces.

Next, the clamp 120 is a conventional clamp structure that surrounds and fixes the flange 111 and the packing ring 130 when engaged with an arc structure separated into at least two rings in a ring shape. As shown in FIG. 4, An arm fastening ring 122a and a male fastening fastening ring 122b are formed in a fastening part 122 vertically protruding from both ends of the male fastening part 120. The male fastening fastening part 122b is engaged with the male fastening fastening part 122a, Can be used.

As shown in FIGS. 1 to 4, the clamp 120 may be formed as a set of two clamps 120 with a semicircular structure in a frontal view. However, according to the requirements of the manufacturer and the user, A set of two 180 ° arc clamps 120 and two 90 ° arc clamps 120, or the like.

The flange 111 side of the groove 121a is the same as the outer inclined surface of the flange 111 and the inclined surface 121a of the flange 111, And the other side of the flange 111 of the groove 121a is connected to the flange 111 on the outer surface of the packing ring 130 at the other end of the flange 111 on the inner surface of the packing ring 130 as shown in FIG. ) Of the packing ring 130 to form a pressing portion 121b which presses the pressure-receiving portion 132 of the packing ring 130. The pressure-

In addition, the clamp 120 may be made of metal, but it is preferably made of a synthetic resin such as PE or polyethylene. When it is made of paper, as shown in FIG. 3, Shaped cross-section.

As shown in FIGS. 2 and 4, the engaging portion 122 of the clamp 120 is vertically protruded outward from the circle at each end of the arc on the front face. The clamp 120, which is vertically divided from the circle, A bolt hole 122c is formed horizontally at the center of the protruded engaging portion 122. The bolt hole 122c is horizontally inserted into the bolt hole 122c.

2, the front-side semicircular clamp 120 has an engagement portion 122 at an upper end of the engagement portion 122 at the upper end or an engagement portion 122 at the lower end, 122a and a male fastening ring 122b are formed on both sides of the thickness of the engaging part 122. The male fastening ring 122a is formed by horizontally protruding from both sides of the thickness of the engaging part 122, And the male fastening rings 122b protrude vertically from the center of the thickness of the engaging portion 122 and form a horizontal protruding portion 'T' on both sides of the thickness.

As shown in FIG. 4, the arms of the arm fastening ring 122a and the male fastening ring 122b are integrally formed with arm fastening rings 122a (122a) projecting from the both sides of the thickness of the fastening part 122 ) Of the male coupling ring 122a is inserted between the center of the thickness of the coupling portion 122 and the female coupling ring 122b protruding laterally from the center of the thickness of the coupling portion 122 to the outer side The horizontal protruding portion is hung in a horizontal protruding portion on both sides of the thickness of the engaging portion 122 out of the male fastening loops 122b on the side of the tee.

When the clamp 120 is divided into three or more parts in the form of a ring, a pair of engaging parts 122 of at least two engaging parts 122, which are in contact with each other at the time of engaging the clamp 120 in the form of a ring, An arm tightening ring 122a and a male fastening ring 122b are formed for each of the other pair of engaging portions 122. In the case of the circular arc clamp 120 divided into three parts in the ring behavior, An arm fastening ring 122a is formed in the fastening part 122 at both ends or a male fastening ring 122a is formed respectively or an arm fastening ring 122a and a male fastening ring 122b are formed respectively, The engaging portion 122 of the clamp 120 in contact with the engaging portion 122 of the center clamp 120 is engaged with the arm fastening ring 122a or the male fastening ring 122b formed in the engaging portion 122 of the center clamp 120, An arm fastening ring 122a and a male fastening ring 122b (corresponding to each other) are formed.

A bolt head fixing portion 123 is formed in the bolt hole 122c of the coupling portion 122 to prevent rotation of the polygonal head bolt 124a in a shape corresponding to the head of the polygonal head bolt 124a. The head fixing part 123 is protruded from one end of the bolt hole 122c in one coupling part 122 out of a pair of coupling parts 122 which come into contact with each other in a clamp 120 coupled in a ring shape.

As shown in FIG. 5, among the pipe connecting apparatuses, the pipe connecting apparatuses in which the latching protrusions 112 are not formed on the socket pipe 110 are formed in such a manner that a specific portion of the embedded pipe 200 is broken and cut When the tube 200 is connected to the site.

5, the packing ring 130 is inserted at a distance corresponding to the length of the socket tube 110 for each of the buried and fixed two tubes 200, and then the end of the socket tube 110 is inserted 5 (a) and 5 (b), the two ends of the pipe 200 to be connected corresponding to the cut lengths between the two fixed pipes 200 are inserted into the socket tube 200, The packing ring 130 is inserted into a half of the length of the pipe 110 and then both ends of the pipe 200 to which the packing rings 130 are inserted are inserted into the pipe 200, The socket tube 110 is moved to the tube 200 side connecting the packing ring 130 fitted in the fixed tube 200 and the tube 200 connected to the pipe 200 to which the socket tube 110 is fixed, 200 so that the packing ring 130 is in contact with each flange 111 of the socket tube 110 and all the packing rings 130 are moved toward the flange 111 side All.

4, the clamp 120 in the hinged state, in which the male fastening ring 122b is engaged with the female fastening ring 122a, is inserted in the circular inner side so as to surround the flange 111 and the packing ring 130 When the bolts 124a and 124b are bolted to each other through the bolt holes 122c of the engaging portions 122 facing each other, The pressing portion 121b of the clamp 120 is pressed against the pressured portion 132 of the packing ring 130 and the packing ring 130 is fixed to the pipe 200 And the tube 200 to be connected are elastically tightened to improve airtightness.

As described above, the pipe connecting apparatus including the socket pipe 110 having the straight cylindrical pipe structure without the protruding stopper 112 along the inner periphery has the socket pipe 110 without the stopper 112 fixed to the pipe 200 so that the socket tube 110 is pushed so as not to protrude from the fixed tube 200 and then a new connecting tube 200 is fitted to the cut tube 200, The clamp 120 can be fastened to the center of the pipe 200 to be connected to the fixed pipe 200, so that it is easy to connect pipes such as pipe maintenance.

The pipe connecting device includes at least two pairs of engaging portions 122 that are in contact with each other when the clamp 120 is engaged in the form of a ring in a circular arc clamp 120 in which the engaging portion 122 is projected at each end, (L) 'protruding from both sides of the thickness for each of the other pair of engaging portions 122 except for the engaging portion 122 of the pair, The flange 111 is formed in the hinge state when the male fastening ring 122b of the clamp 120 is engaged with the female fastening ring 122a of the clamp 120, And the packing ring 130 can be easily combined in the form of a smear ring.

In other words, the hooks of the arm fastening ring 122a and the male fastening ring 122b protrude from both sides of the thickness in the tangential direction of the respective ends of the arc, and then are bent vertically toward the outside of the circle, The ring 122a is vertically protruded outward from the center of the thickness of the ring 122a and is inserted through the male fastening rings 122b of the side fasteners protruded to both sides in the thickness direction and the male fastening rings 122b And a portion protruding to both sides in the thickness direction of the male fastening ring 122b is engaged with a portion of the female fastening ring 122a which is vertically bent outward from the outer side of the female fastening ring 122a, It is easy to form the hinge 120a in the hinge state by engaging the male fastening ring 122b with the male fastening ring 122b. This hinge state is easy to collect the clamp 120 in the ring structure, It is easy to combine and separate .

When the clamp 120 is wrapped around the flange 111 and the packing ring 130 in a ring shape and clamped on the outer surface of the flange 111 protruding obliquely from the packing ring 130, The packing ring 130 pushed toward the flange 111 side is pressed against the inner surface of the flange 111 protruding obliquely and the flange 111 is pressed against the pressing portion 121b of the clamp 120, And is more tightly attached to the tube 200 to be connected to the tube 111, thereby improving airtightness.

The bolt head fixing portion 123 corresponding to the head of the polygonal head bolt 124a is protruded at the rim of the bolt lifetime 122c so that the polygonal head bolt 124a inserted into the bolt head fixing portion 123 is not rotated And the nut 124b is easily coupled.

110: socket tube 111: flange 112:
120: clamp 121a: groove portion 121b:
122: engaging portion 122a: arm fastening ring 122b: male fastening ring
122c: bolt hole 123: bolt head fixing portion 124a: polygonal head bolt
124b: nut 130: packing ring 131a: first watertight projection
131b: second watertight projection 132: pressure-applying portion 200: tube

Claims

A socket tube having a straight cylindrical tube structure protruding along an inner periphery and having a flange protruding along the rim at both ends thereof;
A packing ring which is in close contact with the flange while a tube to be connected to the inside is fitted;
A flange and a packing ring are enclosed and fixed at both ends of a semicircle, and a bolt hole is formed in a vertically protruding outer side of the circle while a bolt hole is drilled, And a clamp including a nut and a male coupling ring or a male coupling ring formed at a coupling portion of one end,
The arm fastening ring projects from the both sides of the thickness of the fastening part in a ring shape to the fastening part contacting the fastening part in the form of a ring, So that the male fastening rings can be inserted between the female fastening rings protruding from both sides of the thickness of the fastening portion,
After clamping the flange and the packing ring with the tube to be connected in the state that the clamping ring of the clamp is tightened to the arm tightening ring of the clamp, the bolt can be connected to the bolt hole of the coupling part which is in contact with each other. Characterized in that a new pipe connection between the two fixed pipes which can move back and forth is facilitated.

A socket ring having a flange protruded along the rim of each end thereof with a pipe to be connected to the inside thereof, a packing ring closely fitted to the flange with a pipe to be connected to the inside thereof being inserted, and a ring structure, And a clamp for wrapping and fixing the packing ring,
The clamp includes a bolt and a nut, which are vertically protruded outward from the circle at each end of the arc on the front surface, the bolt hole is drilled in the tangential direction of the arc end,
An arm fastening ring and a male fastening ring are formed in at least two pairs of engaging portions that are in contact with each other when the clamps are engaged in a ring shape except for a pair of engaging portions,
The arm fastening ring projects from the both sides of the thickness of the fastening part in a ring shape to the fastening part contacting the fastening part in the form of a ring, So that the male fastening rings can be inserted between the female fastening rings protruding from both sides of the thickness of the fastening portion,
Wherein a flange and a packing ring, into which a pipe to be connected is inserted, are fastened to the female fastening ring of the clamp with the male fastening ring being hinged, and then bolted to the bolt holes of the fastening portions abutting each other.

3. The method according to claim 1 or 2,
The flange protrudes obliquely along the edge of the socket tube,
The packing ring has an inclined surface on the flange side and a pressure-sensitive portion gently protruding toward the flange surface side is formed,
Wherein the flange side of the groove portion is formed with an inclined surface extending from the end of the flange to be fitted into the groove portion to the end of the inner surface of the packing ring Portions are formed,
The pressing portion of the clamp, which is coupled to the ring and tightened to the center of the circle, pushes the portion to be pressed of the packing ring toward the flange side,
Wherein the packing ring is more closely attached to the pipe connected to the flange by riding on the flange-side inclined surface to improve airtightness.

The method of claim 3,
A bolt head fixing portion corresponding to a polygonal head bolt shape is protruded from one end of a bolt lifting edge of one of a pair of engaging portions contacting each other in a ring-shaped clamp,
Characterized in that the polygonal head bolt inserted into the bolt head fixing portion is not rotated so that the nut coupling is easy.