KR20170129304A - Joining apparatus of synthetic resin pipe - Google Patents

Abstract

The present invention relates to an apparatus to join a synthetic resin pipe with an integrated packing stopper, capable of simplifying a composition of a pipe extension unit and a combination part of an apparatus in order to connect a synthetic resin and to prevent damage and separation of the combination part. According to the present invention, the packing stopper has a plurality of combination grooves formed on its internal edge and external edge. On an internal edge of the pipe extension unit and an external edge of an internal pipe, a plurality of combination bumps are formed. A synthetic resin pipe is connected by the combination grooves of the packing stopper and the combination bumps of the pipe extension unit and the internal pipe. As such, the present invention is able to make the pipe extension unit of the apparatus to join a synthetic resin pipe have a simple composition, reduce a number of parts, and to manufacture a synthetic resin pipe easily; thereby improving work efficiency and reduce construction costs. According to the present invention, as there is no need to extend the pipe extension unit to double, leading to the same pipe thickness of the pipe extension unit, the present invention is able to prevent damage due to an uneven thickness of the pipe extension unit. As a packing stopper is formed on an entire connection part of the pipe extension unit, there is no space unit. Accordingly, the present invention is able to prevent contamination due to stagnant foreign substances or tap water. The elasticity of the packing stopper absorbs an external pressure or impact to prevent damage to the pipe extension unit.

Description

[0001] JOINING APPARATUS OF SYNTHETIC RESIN PIPE [0002]

The present invention relates to a device for inserting an inner tube of a synthetic resin pipe for water supply and drainage into an outer surface of a tube of a synthetic resin pipe and tightly connecting the inner circumference of the outer tube of the synthetic pipe tube and the outer circumference of the inner tube of the synthetic pipe tube by a single packing, In order to prevent leakage, separation and breakage of the connection portions, a plurality of coupling protrusions are formed on the outer periphery of the inner circumference of the outer tube of the synthetic pipe tube and the inner tube of the synthetic resin tube, And a joint groove is formed at the same position as the joint projection formed on the inner tube and the inner tube of the inner tube and the outer tube of the packing. And to a synthetic resin pipe joint device for preventing leakage, separation and breakage of a connection portion of a synthetic resin pipe.

The synthetic resin pipes are used for various purposes such as pipes for water supply and drainage, containers for agricultural and industrial use, and various devices and methods for connecting synthetic resin pipes are well known in the art. Generally, A method of connecting pipes in the form of a pipe is adopted at the construction site.

Such a synthetic resin pipe joint device is equipped with a packing and a coupling means in order to prevent water leakage and separation of a joint portion.

However, since the synthetic resin pipe has a larger elastic force than the cast iron pipe and the steel pipe, there is a possibility that the inner pipe and the outer pipe are damaged by the contact with the connecting portion than the middle portion of the pipe due to the bending phenomenon due to external pressure or impact. There is a possibility that the flow of the fluid can not be smoothly generated due to the contamination due to the stagnation of the constant or the vapors generated by the voids.

The present inventor has proposed a synthetic resin pipe joint apparatus having an antimicrobial packing and a stopper, and Korean Patent No. 10-1552107 (Registered on May 29, 2015) (See Figs. 1 and 2), and registered patent registration No. 101536276 (July 2015.07.07) for prevention of vortex.

The above-mentioned patents require a complicated process to form a second expansion part once again in order to form the mounting recess of the packing and the stopper in the inner part of the expansion part, and to form a packing step at the outer edge of the synthetic resin pipe. When the stopper coupling groove is formed on the outer periphery of the inner pipe of the synthetic resin pipe, the thickness of the stopper coupling groove is thinned to weaken the strength of the coupling groove portion There is a danger of breakage, and further, a vortex prevention guide cap must be installed, and there is a problem that a constant water is caught between the stopper and the packing.

KR 101197111 B1 KR 101552107 B1 KR 101536276 B1

SUMMARY OF THE INVENTION It is an object of the present invention to provide a synthetic resin pipe joint device for preventing breakage and separation of a joint portion by simplifying the configuration of the expansion portion and the joint portion of the synthetic resin connection device.

In addition, the connection of the synthetic resin pipe is easy, the pore of the connection part is minimized to prevent the water from sticking and vortex prevention, thereby preventing the decay of the water and smooth the flow of the fluid.

In addition, by integrating the stopper and packing in the joint of the synthetic resin pipe and reducing the length of the joint part, it is possible to achieve the additional object of easy molding of the synthetic resin pipe and reduction of the material.

In the present invention, the stopper and the packing described in the prior art are integrally constructed so that the number of parts for joining the synthetic resin pipe can be reduced, the joint part can be reduced, and the synthetic pipe can be easily processed and installed. Thereby making the bonding of the first and second electrodes more rigid.

In order to achieve the above object, the present invention is characterized in that a plurality of latching protrusions are formed on the inner tube of the expansion tube at the connection portion of the synthetic resin tube, a plurality of latching protrusions are formed on the outer edge of the inner tube, And the engaging groove is formed at a position facing the engaging projection formed on the inner tube.

By using one part in comparison with the conventional structure separated by the packing and the stopper, the structure is simple, and by the plurality of locking projections and the locking grooves, by using the packing stopper of the elastic material provided at the coupling part according to the present invention, The coupling force is improved and the packing stopper is formed on the whole of the bending portion to minimize the gap and thereby prevent the decay and contamination due to the sticking of the water and prevent the vortex of the fluid due to this, The conventional packing and stopper portions do not have to be double-expanded, which is economical to manufacture a synthetic resin pipe.

According to the present invention, there is provided a synthetic resin pipe joint by an integrated packing stopper,

First, the structure of the expansion part of the synthetic resin pipe joint device is simple, the number of parts can be omitted, and the production of the synthetic resin pipe can be easily performed, and the efficiency of operation can be improved and the construction cost can be saved.

Second, because it is not necessary to double the expansion part of the expansion part, the tube thickness of the expansion part is the same, so that breakage due to thickness irregularity of the expansion part can be prevented.

Third, since a packing stopper is formed over the entire connecting portion of the bending portion, it is possible to prevent contamination due to stagnation of foreign substances or water due to no space, and external pressure or impact is absorbed by the elasticity of the packing stopper, It is possible to prevent breakage.

1 and 2 are cross-sectional views of a synthetic resin pipe joint applying to the present invention.
3 is a cross-sectional view of a coupling portion of a synthetic resin pipe fitting according to an embodiment of the present invention.
4 is a cross-sectional view of an enlarged portion of a synthetic resin pipe joint of the present invention.
5 is a sectional view of the packing stopper of the present invention.
6 is a cross-sectional view of a connection portion of an inner tube of a synthetic resin pipe according to the present invention.
7 is an exploded perspective view of a synthetic resin pipe joint of the present invention.

Hereinafter, a synthetic pipe joint apparatus having a single packing stopper according to the present invention will be described in detail with reference to the drawings.

The present invention is an improvement on the structure of the above-mentioned application, which is a modification of the registered patent of the present inventor's registered patent No. 10-1197111 and registered patent No. 10-1552107.

As shown in Figs. 1 and 2, in the pre-registered patent of the present inventor, in order to form the packing 20 and the stoppers 50 and 51 in the expanding portion, the expanding portion is expanded again so that the expanding portion is double- In Fig. 1, a stopper groove should be formed in the outer edge of the inner tube 10a in order to form the second stopper 52 in the inner tube.

In order to form such a configuration, the line registration patent has to be formed with a double tube and a process of forming a groove in the internal connection, thereby adding a manufacturing process of a synthetic resin tube, complicating the external appearance by the double tube portion, The thickness of the expanded portion is not uniform and the projected portion may be damaged by the impact.

In addition, since the stopper groove is formed in the inner pipe, the thickness of the inner pipe is thinned, there is a risk of damage due to an external impact, and the stopper and the packing are formed in double and triple shapes and the length of the expanding portion becomes long. It is expected.

When the synthetic resin member of the inner pipe and the expansion pipe portion come into direct contact with each other at the inlet portion of the expansion pipe portion and the end portion of the inner pipe, there is a possibility that the rigid synthetic resin material is damaged by external impact or pressure. If it seeps and stagnates, the water may be contaminated by the corruption of the water, and scales such as water moss may be formed.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the above-mentioned prior art patents, in which a packing and a stopper are integrally formed, a plurality of engaging grooves are formed on the inner and outer edges of the packing stopper, A plurality of coupling protrusions are formed on the outer periphery of the inner tube, and the synthetic pipes are connected by the coupling grooves of the packing stopper and the coupling protrusions of the inner tube and the inner tube.

As shown in FIG. 3, the present invention is configured such that the inner synthetic resin pipe 100 is coupled to the inside of the expansion part 300 by the packing stopper 200.

With this configuration, the outer periphery of the expanded portion 300 is smooth and short in length, and the expanded portion 300 and the inner pipe 100 are not in direct contact with each other, and external pressure or impact (earthquake, road depression) It is possible to prevent the breakage of the connection portion of the pipe by absorbing the stopper.

In addition, the connection part is completely sealed, the inner end of the connection part is smoothly passed through, and it is possible to prevent the spoilage due to the accumulation of fluid in the gap of the conventional connection part, It can be done smoothly.

FIG. 4 is a sectional view of an expansion unit 300 of a synthetic resin pipe connection apparatus according to the present invention. The expansion unit 400 includes an inner pipe 100 and an expansion pipe coupling protrusion 310, As shown in FIG.

The coupling protrusions 310 are formed at the inlet of the tube bundle 300 and a plurality of the coupling protrusions 310 are formed at least two or at least five depending on the diameter of the tube or the length of the tube. It may be formed at the time of manufacturing the tube portion, or may be formed by attaching the tube portion to the tube portion manufactured as needed.

The coupling protrusions 310 are formed in a right triangle shape in the coupling direction of the tubes, but may be formed in various shapes such as an equilateral triangle and a semicircle, and are formed to face the coupling grooves of the packing stopper.

The length of the tube portion 300 is preferably 1/2 to 2 times the tube inner diameter of the tube portion 300. If the tube portion 300 is less than the inner diameter of the tube portion 300, the coupling force of the tube is lowered. .

5 is a sectional view of the packing stopper 200 according to the present invention. The packing stopper is made of rubber material having the same elasticity as the packing material of the prior patent, and the outer rim is provided with an expansion- And an inner pipe coupling groove 210 and an engagement end 230 coupled to the inner pipe coupling protrusion 110. The inner pipe coupling groove 210 and the inner pipe coupling protrusion 110 are formed in the inner pipe.

The inner pipe coupling groove 210 and the expansion pipe coupling groove 220 are formed in a triangular shape opposite to the coupling direction and the depth is preferably 1/3 to 1/6 of the thickness of the packing stopper 200.

If it is larger than the above-mentioned 1/3 range, the elasticity of the packing stopper 200 may be reduced and the pipe connecting portion may be pushed. If the ratio is smaller than 1/6, the engaging groove and the engaging projection may be detached.

The diameter of the inner end of the packing stopper 200 is set to be 2 to 10% smaller than the diameter of the outer end of the inner pipe 100 to improve the coupling force with the inner pipe. The inner end of the coupling end 230, In the same manner, by making the diameter of the inner tube of the synthetic resin pipe constant, the flow resistance of the fluid is prevented as much as possible by preventing vortex.

Since the packing stopper 200 is formed over the entire extended portion 300, contamination can be prevented because the fluid (water) conveyed to the joint portion and the contaminant do not penetrate from the outside, and the joint end portion 230 is formed When the rigid synthetic resin is shrunk by external pressure or heat because the inner tube and the inner tube are not in direct contact with the end of the coupling part due to the elasticity of the joint end at the time of coupling, It is possible to prevent abrasion or breakage due to contact, and to eliminate voids in the joint, thereby preventing vortexing of the flowing fluid, thereby preventing pressure loss of the fluid without any additional facility.

In addition, the packing stopper 200 may be integrally coupled to the expansion portion during manufacture of the synthetic resin tube, or may be used in combination with the expansion portion in the field.

FIG. 6 is a view illustrating a synthetic resin coupling inner tube 100 according to the present invention, in which a plurality of coupling protrusions 110 are formed at opposed portions of an inner pipe coupling groove 210 of a packing stopper.

Hereinafter, a method of connecting a synthetic resin pipe according to the present invention will be described with reference to the drawings of the present invention.

First, the packing stopper 200 joins the expanded portion after forming the expanded portion 300 of the synthetic resin pipe. The packing stopper can be connected by pushing it into the expansion part by elasticity. In order to reduce the frictional force, it is easy to bond by applying the non-polluting oil such as cooking oil on the surface.

In order to improve the bonding force of a large tube, etc., the bonding force can be improved by applying an adhesive to the inner tube of the expansion tube portion.

When the inner tube 100, that is, the synthetic resin tube, is coupled to the expanded portion to which the packing stopper is coupled, the inner tube is inserted into the expanded portion.

When the inner tube is inserted at a constant pressure, the packing stopper engaging end portion 230 is contracted when the inner tube reaches the engaging end portion 230 of the packing stopper 200 and continues to apply pressure to the engaging protrusion 110 of the inner tube, (220) is coupled, the packing stopper engaging end portion (230) expands again to complete the engagement.

In the case where the packing stopper engagement end 230 is not provided in the related art, the engagement is not completely achieved due to the shrinkage of the packing stopper, or voids are generated due to the contraction and expansion of the synthetic resin pipe at the joint portion. 230).

Even when the inner pipe 100 and the packing stopper 200 are inserted and coupled, oils and adhesives such as cooking oil can be used for reducing the frictional force and improving the bonding force.

The packing stopper 200 according to the present invention has been described in detail. The packing stopper 200 can use the antibacterial packing as described in the prior art of the present invention. In particular, when the antibacterial function is not required, It can also be used.

The synthetic pipe for forming the connecting device of the present invention preferably uses a high strength pipe having a triple pipe structure used in the present invention, and a general single pipe may be used if a special strength is not required.

Although a specific embodiment has been described, various modifications may be made depending on the diameter and use of a synthetic resin tube, and this is included in the scope of protection of the present invention.

The synthetic pipe fitting according to the present invention can be realized not only in the number of water pipes as shown in the drawings but also in various synthetic pipe fittings such as a positive water pipe, an intact pipe, a straight pipe, a tee, and an elbow pipe.

Although the present invention has been described by way of example only, it is to be understood that the invention is not to be limited to the specific embodiments, but includes all changes, equivalents and alternatives falling within the spirit and scope of the invention Should be understood to include.

That is, the synthetic pipe joint of the present invention can be used not only for the water pipe, but also for various synthetic pipe joints such as straight, elbow or T-shaped.

100: Inner pipe
110: Inner pipe coupling projection
200: Packing stopper
210: Inner pipe joint groove
220: Expansion joint groove
230: packing stopper engaging end
300:
310: Reamer coupling projection
400: expansion portion

Claims (4)

In a synthetic resin pipe joint,
An expanding portion 300 formed of a reinforcing portion 400 and an inner pipe 100 and formed in a circular shape along the circumference of the expansion portion 310 in the expansion portion,
An inner pipe joint groove 210 coupled to the inner pipe coupling protrusion 110 and an inner pipe joint groove 210 coupled to the inner pipe coupling protrusion 110 are formed in the inner periphery of the outer pipe, Stopper 200, and
And a synthetic resin inner tube in which an inner pipe coupling protrusion (110) is formed on the outer periphery. The method according to claim 1,
Wherein the depth of the inner pipe coupling groove (210) and the expansion pipe coupling groove (220) is in a range of 1/3 to 1/6 the thickness of the packing stopper (200). 3. The method of claim 2,
Wherein the packing stopper (200) is integrally formed over the entire extended portion. The method according to claim 1,
The diameter of the inner end of the packing stopper 200 is set to be 2 to 10% smaller than the diameter of the outer end of the inner pipe 100, and the inner end of the coupling end 230 is formed to have the same diameter as the inner end of the inner pipe. A synthetic pipe fitting.

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