KR102630730B1 - A device for pipe connection with a threaded fastening method with improved airtightness - Google Patents

Abstract

The screw-type pipe connecting device with improved airtightness according to the present invention is a pipe connecting device for connecting a pair of pipes, in which threads are formed at both ends, a through hole for receiving the pipe is formed, and a circumference is formed on the inner peripheral surface. a fitting body including a receiving groove formed to have a predetermined width in a direction; a nut member that is screw-coupled with the fitting body and has a through hole through which the pipe is inserted; At least one sealing member accommodated in the receiving groove; and a pipe fixing means disposed at both ends of the fitting body and provided to press the outer diameter of the pipe when the fitting body and the nut member are coupled.
In addition, the screw-type pipe connection device with improved airtightness according to the present invention is formed to accommodate a plurality of sealing members in the receiving groove when the fitting body and the nut member are coupled, thereby maintaining airtightness for a more expanded area. By being able to proceed, significantly improved confidentiality can be provided.

Description

A device for pipe connection with a threaded fastening method with improved airtightness}

The present invention relates to a screw-type pipe connecting device, and more specifically, to a screw with improved airtightness that can connect different pipes based on the screw bonding force without performing separate welding when connecting different pipes. It relates to a fastening pipe connection device.

There are pipes made of various materials, including synthetic resin pipes, and various connection methods are used depending on the type of pipe.

Pipe connection methods include a flange connection method in which flanges are formed and connected to the ends of each corresponding pipe, a coupling connection method in which the ends of each pipe are connected by inserting them into a coupling, and a flange connection method in which the ends of each pipe are connected to each other by inserting the ends of each pipe into a coupling. There is a screw connection method that forms a thread and joins the ends of the pipes, a band connection method that connects the ends of the pipes using a stainless steel band, and an electric fusion method that melts and bonds the ends of the pipes to be connected with a mesh-shaped hot wire. In addition, in the case of piping for transporting high-pressure fluids such as refrigerants, a flare connection method may be used. In particular, in the case of copper piping, which is mainly used in cooling and heating equipment such as air conditioners, the soldering method of melting and connecting welding rods using an oxygen welder is mainly used. Here, copper piping refers to piping made of copper or copper alloy material.

In the case of other conventional pipe connection methods, it is necessary to rotate the coupler or pipe multiple times for screw connection, or to plasticize or fuse the end of the pipe, making pipe connection work cumbersome, especially work in narrow spaces. There is a difficult problem.

In addition, conventionally, oxygen welders were essentially used when constructing copper piping, which is mainly used when installing equipment such as air conditioners. However, these oxygen welders have the problem of being very difficult and dangerous to handle due to the risk of fire.

Accordingly, there is a demand for a connector for copper piping that is easy to connect pipes, allows work in a narrow space, and can connect pipes without using an oxygen welder when constructing copper piping.

KR 10-2004-0011586 A, 'Pipe fixing device' (2004. 02. 05)

The present invention aims to solve the above-mentioned problems, and more specifically, to provide a screw-type pipe connecting device with improved airtightness that can more firmly and easily connect pipes without welding.

The screw-type pipe connecting device with improved airtightness according to the present invention is a pipe connecting device for connecting a pair of pipes, in which threads are formed at both ends, a through hole for receiving the pipe is formed, and a circumference is formed on the inner peripheral surface. a fitting body including a receiving groove formed to have a predetermined width in a direction; a nut member that is screw-coupled with the fitting body and has a through hole through which the pipe is inserted; At least one sealing member accommodated in the receiving groove; and a pipe fixing means disposed at both ends of the fitting body and provided to press the outer diameter of the pipe when the fitting body and the nut member are coupled.

A plurality of the sealing members have a ring shape and are accommodated in the receiving groove, and the sealing members are provided to press each other when the fitting body and the nut member are coupled.

The sealing member includes: a first sealing member including an inclined surface inclined at a predetermined angle; And a second sealing member having an inclined surface of a shape corresponding to the inclined surface of the first sealing member, and being seated in the receiving groove so that the inclined surfaces of the first sealing member and the second sealing member contact each other. Do it as

The sealing member is characterized in that the first sealing member is provided to surround the outer periphery of the second sealing member within a predetermined range.

The sealing member includes: a first sealing member having a first inclined surface having a shape that gradually reduces the inner diameter formed on the inner periphery; and a second sealing member in which a second inclined surface having a shape that gradually reduces the outer diameter is formed on the outer periphery.

The sealing member includes: a first pipe contact surface formed to contact the outer diameter of the pipe, and a first fitting body contact surface formed to contact the receiving groove; and a second sealing member including a second pipe contact surface formed to contact the outer diameter of the pipe and a second fitting body contact surface contacting the receiving groove.

The sealing member is formed such that the area of the first pipe contact surface is less than or equal to the area of the second pipe contact surface, and the area of the first fitting body contact surface is greater than or equal to the area of the second fitting body contact surface. It is characterized by being formed.

The nut member moves the pipe fixing means toward the center of the longitudinal axis of the pipe when engaging with the fitting body, so that the pipe fixing means presses the pipe. It is characterized by the formation of a slope sloping towards.

The pipe fixing means includes at least one pressing member provided to move toward the axial center of the pipe along the inclined surface; and a housing provided to accommodate the pressing member and seated on an end of the fitting body.

The screw-type pipe connecting device further includes an intermediate sealing member disposed between the ends of the pair of pipes that have been joined together.

The screw-type pipe connecting device with improved airtightness according to the present invention can provide improved airtightness by providing at least one sealing member, and provides the effect of more firmly fixing the pipe through the pipe fixing means. possible.

In addition, when the fitting body and the nut member are coupled, a plurality of sealing members are formed to be accommodated in the receiving groove, thereby maintaining airtightness over a more expanded area, thereby providing significantly improved airtightness. .

In addition, through the formation of an inclined surface, the sealing member can be deformed toward the pipe and the fitting body based on an external force applied in the longitudinal direction of the pipe when the pipe is joined, thereby providing improved airtightness. there is.

And, through a coupling structure in which the first sealing member surrounds the second sealing member, the first sealing member blocks the separation space that can be formed on the fitting body side, and the second sealing member blocks the pipe. By blocking the separation space that may be formed on the side, it is possible to provide the effect of securing significantly improved airtightness.

In addition, by forming the area of the second pipe contact surface formed on the second sealing member to be large, the airtightness of the pipe side through the second sealing member can be further improved, and the first fitting formed on the first sealing member By forming the body contact surface area to be large, the airtightness of the fitting body side through the first sealing member can be further improved, thereby providing significantly improved airtightness overall.

In addition, by allowing the pipe fixing means to pressurize the pipe by screwing between the fitting body and the nut member, it is possible to provide the effect of maintaining a firm fastening force with a simple fastening process.

In addition, by pressurizing the pipe at at least one point through at least one pressing member, it is possible to provide the effect of maintaining a more robust fastening force.

In addition, through the formation of an intermediate sealing member, the separation space that may be formed at the ends between pipes can be minimized, providing the effect of securing improved airtightness.

Figure 1 is a cross-sectional view showing a state in which a pair of pipes are joined by a screw-fastened pipe connection device with improved airtightness according to the present invention.
Figure 2 is an enlarged cross-sectional view of section A of Figure 1 when a pipe is inserted into the fitting body of the screw-type pipe connection device with improved airtightness according to the present invention.
Figure 3 is an enlarged cross-sectional view showing area A of Figure 1 before the pipe is inserted into the fitting body of the screw-type pipe connection device with improved airtightness according to the present invention.
Figure 4 is a cross-sectional view showing the stage in which the nut member of the screw-type pipe connection device with improved airtightness according to the present invention is coupled.
Figure 5 is a cross-sectional view showing a step in which the nut member and the fitting body of the screw-type pipe connection device with improved airtightness according to the present invention are coupled to each other.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to provide a general understanding of the technical field to which the present invention pertains. It is provided to fully inform those with knowledge of the scope of the invention, and the present invention is only defined by the scope of the claims.

Additionally, the terms used in this specification are for describing embodiments and are not intended to limit the present invention.

As used herein, singular forms also include plural forms, unless specifically stated otherwise in the context. As used in the specification, “comprises” and/or “comprising” does not exclude the presence or addition of elements other than the mentioned elements.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings that can be commonly understood by those skilled in the art to which the present invention pertains.

First, with reference to Figure 1, the screw-type pipe connecting device with improved airtightness according to the present invention will be described in more detail.

Figure 1 is a cross-sectional view showing a state in which a pair of pipes are joined by a screw-type pipe connecting device with improved airtightness according to the present invention.

As shown in Figure 1, the pipe connecting device of the present invention is characterized by including a fitting body 100, a nut member 200, a sealing member 300, and a pipe fixing means 400.

First, the fitting body 100 has a through hole for accommodating the pipe and is formed to accommodate a pair of pipes.

In addition, the fitting body 100 is provided with threads formed at both ends so that it can be mutually screwed with the nut member 200, which will be described later.

In particular, the fitting body 100 may include a receiving groove 110 formed on the inner peripheral surface to have a predetermined width in the circumferential direction in order to accommodate the sealing member 300, which will be described later.

In addition, the nut member 200 is provided to be screwed to the fitting body, and a through hole is formed to allow the pipe to be inserted, and is provided so that one pipe (P) of the pair of pipes (P) can be inserted. .

In particular, the nut member 200 is provided to secure the pipe (P).

More specifically, when the nut member 200 is coupled to the fitting body 100, the pipe fixing means 400 provided for fixing the pipe is moved toward the center of the longitudinal axis of the pipe to secure the pipe. A fixing means 400 is provided to pressurize the pipe and fix the pipe P.

Here, the pipe fixing means will be described in more detail below.

In addition, the nut member 200 has an inclined surface 210 formed on its inner surface inclined toward the center of the axis.

In particular, the inclined surface 210 is formed to guide the pipe fixing means 400 to move toward the pipe P, and the screw connection between the nut member 200 and the fitting body 100 is formed. As the process progresses, the pipe fixing means 400 moves along the inclined surface 210 to pressurize the outer periphery of the pipe P as described above.

As described above, the pipe fixing means can pressurize the pipe by screwing between the fitting body 100 and the nut member 200, thereby providing the effect of maintaining a firm fastening force with a simple fastening process. possible.

And the sealing member 300 is provided to maintain airtightness between the pipe and the fitting body 100 and is provided to be accommodated in the receiving groove 110.

At this time, the sealing member 300 may be made of a flexible material with elastic restoring force.

In addition, although not specifically shown in the drawings, the sealing member 300 may be provided so that the cross-sectional shape of the sealing member has one or more shapes selected from circular, square, and C-shaped, and may have the above-mentioned shape. By doing so, the sealing member 300 of various cross-sectional shapes can be applied in accordance with the intended use of the pipe, thereby providing improved versatility.

In particular, at least one sealing member 300 may be provided to be seated on the receiving groove 110, and more improved airtightness may be provided by providing at least one sealing member 300. The pipe fixing means 300 can provide the effect of fixing the pipe more firmly.

In addition, a plurality of the sealing members 300 have a ring shape and are accommodated in the receiving groove 110, and when the fitting body 100 and the nut member 200 are coupled, the sealing members are They are provided to press against each other.

In addition, when the fitting body 100 and the nut member 200 are coupled, a plurality of sealing members 300 are formed to be accommodated in the receiving groove 110, making it possible to maintain airtightness for a more expanded area. As a result, significantly improved confidentiality can be provided.

In addition, the pipe fixing means 400 is disposed at both ends of the fitting body 100, and when the fitting body 100 and the nut member 200 are coupled, the outer diameter of the pipe (P) is adjusted. It is equipped to pressurize.

In particular, the pipe fixing means 400 may include a pressing member 410 and a housing 420.

First, the pressing member 410 is provided to move toward the axial center of the pipe along the inclined surface, and at least one of the pressing members 410 extends around the circumference of the pipe to expand the coupling area to the pipe and enable more robust coupling. It is characterized by being arranged accordingly.

In addition, the housing 420 is provided to accommodate the pressing member 410 arranged along the circumference of the pipe, and is provided to be seated on the end of the fitting body.

As described above, the pipe can be pressed at at least one point through at least one pressing member 410 disposed to surround the circumference of the pipe, thereby providing the effect of maintaining a more robust fastening force. It becomes possible.

In addition, the screw-fastened pipe connection device may further include an intermediate sealing member 500.

Here, the intermediate sealing member 500 may be provided to be disposed between the ends of the pair of pipes P that have been joined together.

In particular, by providing the intermediate sealing member 400, water leakage that may occur between the ends of a pair of pipes can be prevented, thereby ensuring improved airtightness.

Additionally, the intermediate sealing member 400 may include one or more selected from O-rings and washers, and it is more preferable to use a material capable of elastic deformation.

Through the formation of the intermediate sealing member 400 as described above, the separation space that may be formed at the ends between pipes can be minimized, providing the effect of securing improved airtightness.

Figure 2 is an enlarged cross-sectional view of section A of Figure 1 with a pipe inserted into the fitting body of the screw-type pipe connection device with improved airtightness according to the present invention, and Figure 3 is an enlarged cross-sectional view showing the area A of Figure 1 with improved airtightness according to the present invention. This is an enlarged cross-sectional view of area A of FIG. 1 before the pipe is inserted into the fitting body of the screw-type pipe connection device.

As shown in Figures 2 and 3, the sealing member 300 may include a first sealing member 310 and a second sealing member 320.

At this time, the first sealing member 310 and the second sealing member 320 are all provided to be accommodated in one receiving groove 110 formed in the fitting body, and the pipe P is connected to the fitting. When combined with the body 100, the first sealing member 310 and the second sealing member 320 are pressed against each other and each is deformed.

Additionally, the sealing member 300 is provided so that the first sealing member 310 surrounds the outer periphery of the second sealing member 320 within a predetermined range.

In this way, through the coupling structure in which the first sealing member 310 is formed to surround the second sealing member 320, the first sealing member 310 is spaced apart from the fitting body 100. By blocking the space and blocking the separation space that may be formed on the pipe P side, the second sealing member 320 can provide the effect of securing significantly improved airtightness.

In addition, the first sealing member 310 and the second sealing member 320, which constitute the sealing member 300, will be described in more detail.

First, the first sealing member 310 is provided with an inclined surface inclined at a predetermined angle to have a shape that gradually reduces the inner diameter, and the second sealing member 320 is formed with the first sealing member 320 to gradually reduce the outer diameter. 1 An inclined surface of a shape corresponding to the inclined surface 321 of the sealing member is formed.

At this time, the inclined surfaces of the first sealing member and the second sealing member are seated in the receiving groove so that they contact each other.

As described above, through the formation of the inclined surface, the sealing member can be deformed toward the pipe and the fitting body based on an external force applied in the longitudinal direction of the pipe when the pipe is coupled, thereby improving airtightness. can be provided.

And, the first sealing member 310 includes a first inclined surface 311, a first pipe contact surface 312, and a first fitting body contact surface 313.

Here, the first inclined surface 311 is formed to have a shape that gradually reduces the inner diameter.

And, the first pipe contact surface 312 is formed to contact the outer diameter of the pipe.

Next, the first fitting body contact surface 313 is formed to contact the inner peripheral surface of the receiving groove.

And, the second sealing member 320 is characterized by including a second inclined surface 321, a second pipe contact surface 322, and a second fitting body contact surface 323.

Here, the second inclined surface 321 is formed to have a shape that gradually reduces the outer diameter of the second sealing member.

And, the second pipe contact surface 322 is formed to contact the outer diameter of the pipe (P).

Additionally, the second fitting body contact surface 323 is formed to contact the receiving groove.

At this time, the area of the first pipe contact surface 312 is formed to be smaller than or equal to the area of the second pipe contact surface 322, and the area of the first fitting body contact surface 313 is the second fitting body contact surface ( 323), and is preferably formed to be larger than or equal to the area of 323).

In this way, the area of the first fitting body contact surface 313 is formed to be larger than the area of the second fitting body contact surface 323, thereby improving the airtightness of the fitting body 100 through the first sealing member 310. It can be improved.

In addition, by forming the area of the second pipe contact surface 322 to be larger than the area of the first pipe contact surface 312, air tightness on the pipe P side through the second sealing member 320 can be further improved. This can provide significantly improved overall confidentiality.

Next, with reference to FIGS. 1, 4, and 5, the fastening process of the screw-fastened pipe connection device with improved airtightness of the present invention will be described in more detail.

Figure 4 is a cross-sectional view showing the step of combining the nut member of the screw-type pipe connection device with improved airtightness according to the present invention, and Figure 5 is a nut member and fitting of the screw-type pipe connection device with improved airtightness according to the present invention. This is a cross-sectional view showing the steps in which the bodies are joined together.

As shown in Figures 4 and 5, when the fitting body 100 is screwed with the nut member 200, the pressing members 410 constituting the pipe fixing means 400 described above are connected to the nut member 200. The pipe is fixed by moving along the inclined surface formed on the nut member 200.

More specifically, the pressing members 410 are gathered toward the center of the longitudinal axis of the pipe (P), and the pressing members 410 move to the outer periphery of the pipe (P) according to the progress of the screw coupling. is gradually pressurized.

In particular, the pipe fixing means 400 is coupled to the pipe P after the nut member 200 and the pipe P are coupled to each other, and then the nut member 200 and the fitting body 100 ) is combined.

At this time, after one nut member 200 selected from the pair of nut members 200 coupled to both ends of the fitting body 100 is completely fastened to the fitting body 100, the other nut is While the member 200 is coupled to another pipe (P), the member 200 may be coupled to the fitting body 100.

In addition, in a state where each of the nut members 200 is coupled to different pipes P, after the pipes are coupled to the fitting body, a gap between the nut member 200 and the fitting body 100 is formed. Of course, screw fastening may be performed to couple the pipes P to each other as shown in FIG. 5 .

Thereafter, as shown in FIG. 1 described above, when the nut members 200 disposed at both ends of the fitting body 100 are completely screwed together with the fitting body 100, a different pair of pipes P is formed. They become connected to each other.

As described above, the position of the pipe fixing means 400 disposed at the end of the fitting body 100 is changed by the nut member 200 screwed to the fitting body 100 to secure the pipe P. By allowing gripping, the pipes P can be joined with significantly stronger force without welding, thereby maintaining improved fastening force.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but this is only for illustrating the invention, and those skilled in the art may make various modifications or equivalents from the detailed description of the invention. It will be appreciated that one embodiment is possible.

Therefore, the true scope of rights of the present invention must be determined by the technical spirit of the patent claims.

100: fitting body
110: Accommodation home
200: Nut member
300: sealing member
310: first sealing member
311: first slope
312: first pipe contact surface
313: second fitting body contact surface
320: second sealing member
321: second slope
322: Second pipe contact surface
323: Second fitting body contact surface
400: Pipe fixing means
410: Pressure member
420: housing
500: Intermediate sealing member

Claims (10)

In a pipe connecting device connecting a pair of pipes,
The pipe connection device,
A fitting body 100 including screw threads formed at both ends, a through hole for receiving the pipe, and a receiving groove 110 formed on the inner circumferential surface to have a predetermined width in the circumferential direction;
A nut member 200 that is screw-coupled with the fitting body and has a through hole for inserting the pipe into the nut member 200;
At least one sealing member 300 accommodated in the receiving groove; and
Pipe fixing means 400 disposed at both ends of the fitting body and provided to press the outer diameter of the pipe when the fitting body and the nut member are coupled;
A plurality of the sealing members 300 have a ring shape and are accommodated in the receiving groove, and when the fitting body and the nut member are coupled, the sealing members are provided to press each other,
The sealing member 300 has an inclined surface 311 inclined at a predetermined angle, a first pipe contact surface 312 formed to contact the outer diameter of the pipe, and a first fitting body contact surface contacting the receiving groove. a first sealing member (310) having (313); and a second pipe contact surface 322 that has an inclined surface of a shape corresponding to the inclined surface 321 of the first sealing member and is formed to contact the outer diameter of the pipe, and is in contact with the receiving groove. It includes; a second sealing member (320) having (323);
The inclined surfaces of the first sealing member and the second sealing member are seated in the receiving groove so that they contact each other,
The area of the first pipe contact surface 312 is formed to be smaller than or equal to the area of the second pipe contact surface 322,
A screw-type pipe connection device with improved airtightness, characterized in that the area of the first fitting body contact surface 313 is greater than or equal to the area of the second fitting body contact surface 323. delete delete According to claim 1,
The sealing member 300 is,
A screw-fastened pipe connection device with improved airtightness, characterized in that the first sealing member 310 is provided to surround the outer circumference of the second sealing member 320 to a predetermined extent. According to claim 1,
The sealing member 300 is,
A first sealing member 310 having a first inclined surface 311 formed on the inner periphery having a shape that gradually reduces the inner diameter; and
A screw-fastened pipe connection device with improved airtightness, comprising a second sealing member (320) having a second inclined surface (321) formed on the outer periphery, which has a shape that gradually reduces the outer diameter. delete delete According to claim 1,
The nut member 200 is,
When coupling with the fitting body proceeds, the pipe fixing means is moved toward the center of the longitudinal axis of the pipe so that the pipe fixing means can pressurize the pipe. An inclined surface ( 210) A screw-type pipe connection device with improved airtightness, characterized in that it is formed. According to claim 8,
The pipe fixing means 400 is,
At least one pressing member 410 provided to move toward the axial center of the pipe along the inclined surface; and
A screw-fastened pipe connection device with improved airtightness, comprising a housing 420 provided to accommodate the pressing member and seated on an end of the fitting body. According to claim 1,
The screw-type pipe connection device,
A screw-type pipe connecting device with improved airtightness, characterized in that it further comprises an intermediate sealing member (500) disposed between the ends of the pair of pipes that have been joined together.