KR200280038Y1 - coupling of socket pipe - Google Patents

Abstract

The present invention relates to a pipe fitting of a knitting pipe, in the pipe fitting of the knitting pipe, the tip of the pipe is coupled to the inner periphery and has a catching jaw at the outer periphery, between the inner side of the knitting pipe and the outer periphery of the pipe in a ring shape. The sealing ring is positioned to seal the inner surface of the knitting pipe, and is firmly fixed to the front end of the pipe which is composed of two semi-circular ring bodies, and is firmly adhered to the outer surface of the sealing ring, thereby ensuring the compression tightness of the sealing ring. At the same time, it is equipped with a semi-circle holder to prevent the detachment of the tube and a cap fitted to the outer periphery of the tube outside the semi-circle holder to be firmly fixed by the fastening means. It can be shortened to a minimum, and even a large pipe of 100mm or more can be connected to a pipe. The risk of separation is characterized not at all.

Description

Coupling of socket pipe

The present invention relates to the pipe joint of the single-handed pipe, more specifically, the pipe joint work is easy to reduce the pipe joint work time on the site to a minimum, and the pipe joint work is possible even with large pipes of 100mm or more, after the pipe joint The concern of leaks, of course, relates to the pipe joints of single-handed pipes that are never separated by water pressure.

In general, in the case of laying underground pipes for sewerage and electric wires, pipes made of synthetic resins (PE), which are light in weight, convenient in operation, and have high durability compared to cement pipes, are mainly used.

Known pipe manufacturing technology using synthetic resin is to produce a synthetic resin pipe through a process such as extrusion-molding-cooling-drawing-cutting, etc., the pipe made by this method is commonly used in water pipes, sewer pipes, conduit pipes and the like.

Tube joints of such a synthetic resin pipe body (tube joint) is a device used to join the pipe (pipe), there are various types (type) depending on the type and size of the pipe.

Screw gas pipe joints used to connect gas pipes Elbows connected at right angles, Tees connected in T-shape, 90 ° Y connected in Y-shape, Cross connected in cross-shaped, U-connected Return bends and the like.

Where the centerline of the pipe does not coincide, a socket and spigot joint is used. Where the pipe diameter is large, flanged joints are used. Flanged joints have the advantage of facilitating device and disassembly. Where pipes are stretched, expansion joints with adjustable depth are used.

Figure 3 is a side cross-sectional view showing the appearance of a conventional knitting pipe pipe fittings, the pipe fittings are combined with a synthetic resin pipe 70 is fitted inside the threaded portion 140 is formed in the outer periphery, the knitting pipe 140 and the knitting pipe 140 and synthetic resin An airtight O-ring 110 interposed between the pipes 70 and watertight, a pusher 120 supporting the O-ring 110 at the inner end of the single-handed pipe 140, and an inclined outer surface 132 at an outer circumference thereof. A close contact protrusion 134 is formed at the periphery of the holder 130 for pressing and supporting the pusher 120 at the tip of the pusher 120, and a pressure slope 104 is formed at one inner circumference, and an inner screw part (at the other inner circumference). 102 is formed is composed of a cap 100 for pressing the holder 130 to the knitting tube 140 side.

The pipe fittings of the conventional single-handed pipe having such a configuration are first coated with each part using soapy water or non-toxic oil, and then the cap 100, the pusher 120, and the sealing O-ring 110 on the synthetic resin tube 70. In turn, it is pushed up to twice the portion of the synthetic resin tube (70).

Then, the cross section of the synthetic resin tube 70 is pushed to the center portion of the inner side of the knitting tube 140. At this time, the sealed O-ring 110 and the pusher 120 are in close contact with the knitting tube 140 as much as possible.

The worker firmly fastens the cap 100 and the knitting pipe 140 by using a chain wrench (not shown), wherein the synthetic resin pipe 70 should not be pushed out of the knitting pipe 140 and the outer peripheral edge of the knitting pipe 140 is It is appropriate to couple the threaded portion 142 so that about 1 to 2 turns remain.

The operator separates the combined cap 100 and the knitting tube 140 from each other to confirm that the sealed O-ring 110 is fixed between the synthetic resin tube 70 and the knitting tube 140, and then opens the holder 130 to open the cap 100. And the synthetic resin pipe 70 between the knitting pipe 140.

Next, the cap 100 and the knitting tube 140 may be firmly fastened using a chain wrench.

However, the pipe fittings of the conventional knitting pipe should be screwed to the cap 100 and the knitting pipe 140 by using a chain wrench in the field method of working in the field, but if the diameter is larger than 100mm, the chain wrench There was a problem in that the joint can not be properly performed using the screw leakage occurs in the pipe joint or severely dismantled by the water pressure.

Therefore, the present invention is intended to solve the conventional problems as described above, the pipe joint work is easy to shorten the pipe joint working time in the field to a minimum, and even a large pipe body of 100mm or more is possible, The purpose of the present invention is to provide a pipe fitting of a synthetic resin pipe that has no fear of water leakage after being joined, of course, and is unlikely to be separated by water pressure.

In order to achieve the above object, the present invention provides a pipe fitting of a knitting tube;

A knitting pipe having an end of the tube coupled to the inner circumference and having a locking jaw at the outer circumference;

A sealing ring positioned between the inner side of the knitting tube and an outer periphery of the tube in a ring shape to seal the inner surface of the knitting tube;

A semi-circle holder which is firmly fixed to the front end of the tubular body which is composed of two semi-circular ring bodies, and is firmly fixed to the outer surface of the sealing ring by being firmly adhered to the outer surface of the sealing ring, thereby ensuring the compression watertightness of the sealing ring and preventing the tube from being separated;

It is characterized in that it has a cap fitted to the outer periphery of the tube body outside the semi-circular holder to the tube body is firmly fixed by the fastening means.

Fastening means and the coupling hole formed in the longitudinal direction of the tubular body in a plurality of places;

A catching jaw formed so that the outer periphery of the knitting tube projects outward;

A support ring located on the inner side of the locking jaw in a ring shape;

One end has a locking projection fixed to the support ring and the other end is fitted with a coupling hole of the cap is characterized by having a hook bolt is firmly fixed by the fastening nut.

Figure 1 is an enlarged side cross-sectional view showing the main part is fastened using a hook bolt as a fastening means according to an embodiment of the present invention,

Figure 2a is a side cross-sectional view showing the main portion of the semicircular holder embodiment of the present invention,

Figure 2b is a front sectional view of the excerpts showing the appearance of the semi-circle holder of the embodiment of the present invention,

Figure 3 is a side cross-sectional view showing a state of a conventional knitting pipe pipe fittings.

* Description of the symbols for the main parts of the drawings *

1: pipe fitting 10: cap

12: coupling hole 20: semi-circle holder

21: inner projection 22: semi-circular ring

23: through hole 26: fastening bolt

27: nut 30: sealing ring

40: knitting pipe 42: jam jaw

50: support ring 60: hook bolt

61: thread 62: engaging projection

64: tightening nut 70: synthetic resin tube

Hereinafter, the present invention in more detail by the accompanying drawings as follows.

1 is an enlarged side cross-sectional view showing the main part is fastened using a hook bolt as an embodiment of the present invention, Figure 2a is a side cross-sectional view showing the appearance of the semi-circle holder of the present invention embodiment, Figure 2b is an embodiment of the present invention This is a front sectional view of the lumbar excerpt showing the towing semi-circle holder.

Pipe joint (1) of the synthetic resin pipe of the present invention is a one-way pipe 40, one end of the synthetic resin pipe body 70 is coupled to the inner circumference, a sealing ring 30 for sealing the inner surface of the knitting pipe 40 in a ring shape, and two Semi-circular holder 20 fixed in advance by the fastening bolt 26 to the front end portion of the tubular body 70, which is made up of semi-circular rings 22, 24, and tubular shape 70 outside the semi-circular holder 20 in tubular shape. It is composed of a cap 10 that is fitted to the outer periphery is firmly fixed by the fastening means (A).

The knitting pipe 40 is made of a synthetic resin tube, and the outer periphery of the tip is formed so that the locking jaw 42 protrudes outward, and the inner end of the synthetic resin tube 70 is located.

Sealing ring 30 is a ring-shaped rubber material having an elastic force, the outer periphery and the knitting pipe 40 of the synthetic resin pipe body (70) (70a) is interviewed to the front end of the knitting pipe 40 and fitted into the knitting pipe 40 It is in close contact with both ends of the single-handed pipe 40 is to firmly seal.

The semi-circle holder 20 is a semi-circular metal material, and when the tube 70 is pushed out by hydraulic pressure, it prevents the detachment by the cap 10 to be described later, as shown in Figs. 2a and 2b. After the two semicircle rings 22 and 24 having the through holes 23 are formed to face each other in close contact with the sealing ring 30 at the rear surface of the sealing ring 30 to form a circular shape, the through holes 23 formed at both ends thereof. ) Is fastened firmly by fastening bolts 26 and nuts 27.

The inner circumference of the semi-circle holder 20, the plurality of inner projections 21 protrude inwardly, is formed perpendicular to the knitting tube 40 direction to increase the friction force that the tubular body 70 is separated from the knitting tube 40 Will be prevented.

Cap 10 is a pipe body coupled to the center through the synthetic resin pipe 70, the inner side of one side is formed as a recess on the tip end of the knitting pipe 40 together with the semi-circular holder 20 and the sealing ring 30 A portion of the coupling hole 12 is formed in the horizontal direction of the tubular body 70 in a plurality of places, and is firmly fixed to the knitting tube 10 by the fastening means (A).

When the caps 10 located at both ends of the knitting pipe 40 are used as the fastening means A as shown in Fig. 1, the hook bolt 60 having the locking projection 62 is moved outwardly to the distal end of the knitting pipe 40. The protruding locking jaw 42 is formed, and the hook bolt 60 having the locking protrusion 62 is positioned at the distal end of the coupling hole 12 of the cap 10, and the locking protrusion 62 is the knitting pipe 40. It may also be configured to be directly fixed to the locking jaw 42 of the), but in that case there is a possibility that the locking jaw 42 of the synthetic resin material may be damaged by the locking projection 62 of the metal material and the locking jaw 42 and Between the locking projections 62 of the hook bolt 60, the support ring 50, which will be described later, of a metal material is interposed therebetween, so that the locking projection 62 of the hook bolt 60 is fixed to the support ring 50. Then, the fastening nut 64 is rotated to fasten and fix the hook bolt 60 in the coupling hole 12 of the cap 10.

The fastening means (A) of this embodiment of the present invention is a locking jaw formed to protrude outward from the outer periphery of the coupling hole 12 and the knitting pipe 40 formed in the longitudinal direction of the synthetic resin tube 70 in many places of the cap 10 (42), a support ring (50) positioned on the inner side of the locking step (42) in a ring shape, and one end of the locking protrusion (62) fixed to the support ring (50), and the other end of the cap (10). It is composed of a hook bolt 60 is inserted into the coupling hole 12 is firmly fixed by the fastening nut (64).

Hook bolt 60 is a bolt body formed with a screw thread 61 is formed on one side and the engaging projection 62 protrudes on the other end, the semi-circular holder (20) by firmly in close contact with the cap 10 to the front end of the knitting tube 40 ) And the sealing ring 30 to be in close contact with the tip of the knitting pipe 40 to reinforce the sealing force.

The support ring 50 is a ring member made of a metal material in which a semi-circular band is axially coupled at the tip. The support ring 50 supports the support force of the hook bolt 60, thereby supporting the support force of the hook bolt 60. Disperses across the board to increase bearing capacity.

The support ring 50 may be positioned on the inner side of the hooking jaw 42 of the knitting pipe 40 to be mass-produced by integrally inserting the knitting pipe 40 when the knitting pipe 40 is ejected.

Referring to the use state of the present invention as follows.

In order to perform the pipe joint of the synthetic resin pipe 70, the operator first places the cap 10 at the tip of the pipe 70, and then places the semi-circular holder 20 at the tip of the pipe 70 to fasten the bolt ( It is firmly fixed to the outer periphery of the tubular body 70 by the 26 and the nut 27.

Then, the semi-circular holder 20 is fitted to the outer circumference of the fixed one side of the tubular body 70 is in close contact with the semi-circular holder 20, the front end of the tubular body 70 in one side of the knitting pipe 40 Insert at the leading edge.

The support ring 50 is seated inside the locking jaw 42 of the knitting pipe 40, and then the hook bolt is coupled to the coupling hole 12 of the cap 10 while keeping the knitting pipe 40 or the cap 10 in close contact with each other. 60 is fastened and the locking protrusion 62 of the hook bolt 60 is fixed to the support ring 50, and then the fastening nut 64 is rotated to the maximum from the thread 61 to be firmly fastened.

The pipe fitting port 1 of the synthetic resin knitting tube of the present invention is fastened to the cap 10, the semi-circular holder 20, and the sealing ring 30 in order on one side end of the pipe 70 in the field, and then fastening means ( A) In the hook bolt (60) can be easily performed pipe joint fastening work, it can shorten the time of pipe joint work in the field to a minimum, and can easily perform a pipe joint even a large diameter pipe. After the pipe joint, there is no fear of water leakage and there is no fear of the pipe joint coming off.

In this way, the pipe joint of the present invention can be easy pipe joint work in the field can be shortened to a minimum, the pipe joint work is possible even in a large pipe of 100mm or more, of course, the risk of leakage after pipe joint There is no effect that there is no fear of separation by hydraulic pressure.

The present invention is not limited to the above-described specific preferred embodiment, and any person having ordinary skill in the art to which the present invention pertains may make various modifications without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (2)

In the pipe joint of the knitting tube; A knitting pipe 40 having a front end of the tubular body 70 coupled to the inner circumference and having a locking jaw 42 on the outer circumference; A sealing ring 30 positioned between the inner side of the knitting tube 40 and the outer periphery of the tube 70 in a ring shape to seal the inner surface of the knitting tube 40; Composed of two semi-circular rings (22, 24) is firmly fixed to the front end of the tubular body (70) by the fastening bolts 26 in advance and firmly in close contact with the outer surface of the sealing ring (30) to press the watertight of the sealing ring (30) Semi-circular holder 20 to ensure the separation of the tubular body 70 at the same time and Pipe fittings of the synthetic resin single-handed pipe, characterized in that it comprises a cap (10) inserted into the outer periphery of the tubular body (70) outside the semi-circular holder (20) to the tubular body is firmly fixed by the fastening means (A). The method of claim 1; Fastening means (A) Coupling holes 12 formed in the longitudinal direction of the tubular body 70 in many places of the cap 10; A catching jaw 42 formed so that the outer circumference of the knitting tube 40 protrudes outward; Support ring 50 which is located on the inner side of the locking step (42) in the shape of a ring and One end has a locking projection 62 is fixed to the support ring 50 and the other end is provided with a hook bolt 60 is fitted into the coupling hole 12 of the cap 10 is firmly fixed by the fastening nut 64. The pipe fitting of the synthetic resin knitting pipe characterized by the above-mentioned.