KR101578031B1 - Pipe connector for non welding constructing of pipes - Google Patents

Pipe connector for non welding constructing of pipes Download PDF

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Publication number
KR101578031B1
KR101578031B1 KR1020150084383A KR20150084383A KR101578031B1 KR 101578031 B1 KR101578031 B1 KR 101578031B1 KR 1020150084383 A KR1020150084383 A KR 1020150084383A KR 20150084383 A KR20150084383 A KR 20150084383A KR 101578031 B1 KR101578031 B1 KR 101578031B1
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KR
South Korea
Prior art keywords
packing
pipe
supporting surface
tightening
packing supporting
Prior art date
Application number
KR1020150084383A
Other languages
Korean (ko)
Inventor
신상현
신용
강영록
Original Assignee
(주)신테크
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Publication date
Application filed by (주)신테크 filed Critical (주)신테크
Priority to KR1020150084383A priority Critical patent/KR101578031B1/en
Application granted granted Critical
Publication of KR101578031B1 publication Critical patent/KR101578031B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/04—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
    • F16L19/05—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection with a rigid pressure ring between the screwed member and the exterior of the flared pipe end
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector

Abstract

A pipe connector is initiated. Wherein the pipe connector includes a first packing supporting surface and a second packing supporting surface extended to decrease in diameter from the respective open ends toward the inside of the pipe Connectors; A tightening nut coupled to both ends of the coupling tube; A first packing supporting surface or a second packing supporting surface, the first packing supporting surface or the second packing supporting surface being coupled to a periphery of a pipe inserted into the connecting pipe, the outer surface being inclined to correspond to the first packing supporting surface or the second packing supporting surface A ring-shaped rubber packing; And a tightening ring which is located at a rear end of the rubber packing and presses the circumference of a pipe inserted into the connection pipe, the outer ring being inclined so as to correspond to the first packing supporting surface or the second packing supporting surface, And two or more small-sized fastening rings spaced apart from each other by a predetermined distance from the circumferential direction and positioned at a rear end of the rubber packing.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a piping connector,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connector, and more particularly, to a pipe connector capable of stably connecting two pipes connected to each other. These pipe connections are particularly usable in non-welded construction of fire extinguish piping.

Generally, after cracking or breakage due to freezing of the pipe, or breakage of the pipe at the time of extension, it is possible to connect or extend the piping on both sides through the pipe connection between them.

FIG. 1 is an exploded perspective view showing a structure of a conventional pipe connector, and FIG. 2 is a cross-sectional view showing a pipe connected using a conventional pipe connector shown in FIG.

Referring to FIG. 1, the conventional pipe connector includes a connection pipe 1 having both open sides and two pipes inserted therein, a packing 2 inserted into the connection pipe 1 to seal the inside of the connection pipe, A pressing ring 3 for pressing the packing 2 positioned at the rear end of the packing 2, a tightening nut 5 coupled to the connecting pipe 1 and a tightening nut 5 inserted into the tightening nut 5, And a tightening ring 4 for fixing the pipe inserted into the inside of the connecting pipe 1. [

The tightening ring 4 forms an inclined surface 4a and an incision 4b and an inclined ring supporting surface 5a is formed inside the tightening nut 5. [ When the tightening ring 4 is inserted into the tightening nut 5, the inclined surface 4a is brought into close contact with the ring supporting surface 5a inside the tightening nut 5, and after the pipe is inserted into the connecting tube 1, When the nut 5 is tightened to the connecting pipe 1, the width of the cutout portion 4b of the tightening ring 4 is narrowed and the diameter of the tightening ring 4 is reduced so that the tightening ring 4 presses the pipe around do.

2, when the tightening nut 5 is tightened to the connection pipe 1 as described above, the tightening ring 4 is fastened to the side of the incising ring 4 of the tightening ring 4, The end of the tightening ring 4 is protruded to the outside of the tube insertion hole 5b of the tightening nut 5 and torsion is generated . As a result, there has been a problem that the piping is hardly fixed and connected.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a pipe connector that can prevent a rigid connection and disconnection of a pipe inserted into a connection pipe when connecting two pipes, and improve the watertight effect between the pipe and the pipe connection have.

According to an aspect of the present invention, there is provided a pipe connector comprising: a pipe having open ends at both sides thereof so that two pipes can be inserted; and a pipe extending from each open end toward the inside of the pipe, A connecting tube including a first packing supporting surface and a second packing supporting surface; A tightening nut coupled to both ends of the coupling tube; A first packing supporting surface or a second packing supporting surface, the first packing supporting surface or the second packing supporting surface being coupled to a periphery of a pipe inserted into the connecting pipe, the outer surface being inclined to correspond to the first packing supporting surface or the second packing supporting surface A ring-shaped rubber packing; And a tightening ring which is located at a rear end of the rubber packing and presses the circumference of a pipe inserted into the connection pipe, the outer ring being inclined so as to correspond to the first packing supporting surface or the second packing supporting surface, And two or more small-sized fastening rings spaced apart from each other by a predetermined distance in the circumferential direction and positioned at a rear end of the rubber packing.

Wherein the at least two fastener tightening rings include at least one pressing protrusion protruding from the inner surface of the sub-tightening ring, and the at least one pressing protrusion includes a first surface inclined in the forward direction of the insertion direction of the pipe, And a second surface perpendicular to the first surface.

In one embodiment, the two or more sub-tightening rings may be coupled to the rubber packing and to a surface perpendicular to the inner surface of the rubber packing. To this end, the rubber packing may include two or more fastening grooves formed on the surfaces corresponding to the two or more sub-tightening rings, wherein the two or more sub-tightening rings are formed on the surface corresponding to the rubber packing, As shown in FIG.

According to the pipe connector of the present invention, it is possible to prevent a rigid connection and disconnection of a pipe inserted into a connection pipe when connecting two pipes, and to improve the water tightness effect between the pipe and the pipe connection.

1 is an exploded perspective view showing a structure of a conventional pipe connector.
FIG. 2 is a cross-sectional view showing a state where pipes are connected using the conventional pipe connector shown in FIG. 1. FIG.
3 is an exploded perspective view showing the construction of a pipe connector according to an embodiment of the present invention.
FIG. 4 is a cross-sectional view showing the piping connected using the piping connector shown in FIG. 3. FIG.

Hereinafter, a piping connector according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

3 is an exploded perspective view showing the construction of a pipe connector according to an embodiment of the present invention.

Referring to FIG. 3, a pipe connector according to an embodiment of the present invention includes a connection pipe 110, a rubber packing 120, a tightening nut 130, and a tightening ring 140.

The connection pipe 110 is disposed between two pipes 10 and 10 'that require pipe joints to connect the two pipes 10 and 10'. The connector tube 110 is a hollow tube having open ends at both ends. The two pipes 10, 10 'are inserted into the interior of the connecting pipe 110 through respective open ends.

A rubber packing 120 and a tightening nut 130 are coupled to the connection pipe 110. A first packing supporting surface 111 (see FIG. 4) and a second packing supporting surface 112 are formed on the inner surface of the connecting pipe 110 for the connection of the rubber packing 120. The first packing supporting surface 111 may be inclined in such a manner that its diameter decreases from one open end of the connecting pipe 110 toward the inside of the connecting pipe 110, The diameter of the connecting pipe 110 may be decreased from the other open end of the connecting pipe 110 toward the inside of the connecting pipe 110.

On the other hand, the coupling pipe 110 is formed with a male screw portion 113 on the outer surface of each open end for engagement of the tightening nut 130.

The rubber packing 120 is coupled to the coupling tube 110 as described above. The rubber packing 120 has a ring shape and the inner diameter of the ring can have a diameter corresponding to the outer diameter of the two pipes 10 and 10 ' Is formed to be inclined at an angle corresponding to the inclined angle of the supporting surface (111) and the second packing supporting surface (112). As the outer surface of the rubber packing 120 is inclined, the rubber packing 120 may include a large-diameter rear portion 121.

The plurality of rubber packings 120 may be inserted into the connection pipe 110 through each open end of the connection pipe 110. At this time, the inclined outer surface of each rubber packing 120 is in close contact with the first packing supporting surface 111 and the second packing supporting surface 112, and the inner surface is in close contact with the outer surface of the two pipes 10, 10 ' . Each rubber packing 120 inserted into the coupling pipe 110 is inclined so that the diameters of the first packing supporting surface 111 and the second packing supporting surface 112 decrease toward the inside of the connecting pipe 110 The first packing supporting surface 111 and the second packing supporting surface 112 restrict the insertion of the first packing supporting surface 111 and the second packing supporting surface 112, Direction.

The tightening nut 130 is coupled to the open end of the coupling tube 110. The tightening nut 130 is formed on the inner surface with a female threaded portion 131 that is engaged with the male threaded portion 113 of the coupling tube 110. A cover 132 is formed at the rear end of the female thread 131 in a direction perpendicular to the inner surface of the female thread 131. The lid portion 132 covers the open end of the coupling tube 110 when the tightening nut 130 is coupled to the coupling tube 110. The lid portion 132 is formed with a pipe insertion port 132a into which the pipes 10 and 10 'are inserted. The pipe insertion port 132a may have the same diameter as the outer diameter of the pipe 10, 10 '.

The plurality of tightening nuts 130 are coupled to the respective open ends of the coupling tube 110. At this time, the lid part 132 covers the open end of the connection pipe 110 against the first packing supporting surface 111 and the second packing supporting surface 112 of the connecting pipe 110.

The tightening ring 140 is located at the rear end of the rubber packing 120 and presses the periphery of the pipe 10 or 10 'inserted into the connection pipe 110 so that the pipe 10 or 10' ) Is fixed. The tightening ring 140 includes two or more sub-tightening rings 141. For example, the number of the sub-tip tightening rings 141 constituting the tightening ring 140 may be four.

Each of the sub-tip tightening rings 141 is formed in an arc shape and is divided into a shape close to the garden when the end portions perpendicular to the circumferential direction of the sub-tip tightening rings 141 correspond to each other. Each of the sub-tip tightening rings 141 is inclined such that its outer surface corresponds to the first packing supporting surface 111 or the second packing supporting surface 112. Each of the sub-tip tightening rings 141 may include a front portion 141a having a small diameter and a rear portion 141b having a large diameter as the outer surface of each of the sub-tip tightening rings 141 is inclined. The front portion 141a of each of the sub-tip tightening rings 141 is a surface corresponding to the rear portion 121 of the rubber packing 120 when the tightening ring 140 is disposed at the rear end of the rubber packing 120.

Each of these subdivision tightening rings 141 is joined to the rubber packing 120. For this, a fastening protrusion 141c is formed on the front portion 141a of each small-end tightening ring 141 and two or more fastening grooves 141c are formed on the rear portion 121 of the rubber packing 120 122 may be formed. The shape of the fastening protrusion 141c and the fastening groove 122 is not particularly limited. For example, the fastening protrusion 141c and the fastening groove 122 may have a rectangular cross-sectional shape.

Each of the sub-tip tightening rings 141 may be coupled to the rubber packing 120 to be positioned on the first packing supporting surface 111 or the second packing supporting surface 112 and the first packing supporting surface 111, Or each of the sub-tip tightening rings 141 located on the second packing supporting surface 112 is pressed by the lid portion 132 of the tightening nut 130 when the tightening nut 130 is coupled to the connecting tube 110 The rubber packing 120 moves in the narrowing direction of the first packing supporting surface 111 or the second packing supporting surface 112 so that the first packing supporting surface 111 or the second packing supporting surface 112 is narrowed And each of the small-sized tightening rings 141 moved in the circumferential direction can be narrowed to press the periphery of the pipe 10, 10 '. One or more pressing protrusions 141d are formed on the inner surface of each small-side tightening ring 141 so as to easily press each of the small-side tightening rings 141 around the pipe 10, 10 '.

The pressing projection 141d includes a first surface 141d1 inclined in the forward direction in the insertion direction of the pipes 10 and 10 'and a second surface 141d2 perpendicular to the insertion direction of the pipes 10 and 10' . Since the first surface 141d1 is perpendicular to the insertion direction of the pipes 10 and 10 ', the pipes 10 and 10' inserted into the connection pipe 110 are arranged in a direction opposite to the insertion direction of the pipes 10 and 10 ' And the second surface 141d2 is inclined in the forward direction of the insertion direction of the pipes 10 and 10 'so that the pipes 10 and 10' can be easily inserted past the pressing projections 141d. Accordingly, the pressing protrusion 141d allows the pipes 10 and 10 'to be inserted into the connecting pipe 110, and the pipes 10 and 10' are inserted into the connecting pipe 110 It is possible to block the detachment to the outside.

Hereinafter, a process of connecting two pipes using the pipe connector according to one embodiment of the present invention will be described. Fig. 4 is a cross-sectional view showing the piping connected using the piping connector shown in Fig. 3, and Fig. 4 is referred to in the following description.

A plurality of rubber packings 120 are inserted into the connection pipe 110 through the open end of the connection pipe 110 to connect the rubber packings 120 to the first packing supporting surface 111, And the second packing support surface 112.

A plurality of tightening nuts 130 and tightening rings 140 are provided and each of the small-end tightening rings 141 constituting the tightening ring 140 is positioned at the rear end of the rubber packing 120, The fastening protrusion 141c of the ring 141 is coupled to the fastening groove 122 of the rubber packing 120 so that the small fastening ring 141 is engaged with the rubber packing 120. At this time, each sub-tip tightening ring 141 is positioned on the first packing supporting surface 111 and the second packing supporting surface 112. In this state, each tightening nut 130 is positioned at each open end of the coupling tube 110 such that the beginning of the female threaded portion 131 and the beginning of the male threaded portion 113 are engaged with each other.

In this state, the two pipes 10 and 10 'are made to correspond to the respective tightening nuts 130 located on both sides of the coupling pipe 110, and then the respective pipes 10 and 10' (110). Each of the pipes 10 and 10 'enters the tightening nut 130 through the pipe insertion port 132a of the tightening nut 130 and is then inserted into the tightening nut 130 located inside the tightening nut 130. [ And each of the pipes 10 and 10 'is inserted into the interior of the connector pipe 110 by inserting it against the second surface 141d2 of the plurality of pressing protrusions 141d formed on the small- So that it can be easily inserted into the coupling pipe 110 without interference of the plurality of pressing projections 141d. At this time, the rubber packing 120 located inside the connection pipe 110 is wrapped around the respective pipes 10 and 10 'and positioned between the connection pipe 110 and the pipes 10 and 10' 10, 10 ', and the connecting pipe 110.

When the respective pipes 10 and 10 'are inserted into the coupling pipe 110, the respective coupling nuts 130 are rotated while being coupled to the coupling pipe 110. In this process, when the tightening nut 130 is gradually tightened to the connection pipe 110, the lid portion 132 of the tightening nut 130 presses the small-side tightening rings 141, and the small-sized tightening rings 141 are pressed The small tightening rings 141 move along the first packing supporting surface 111 and the second packing supporting surface 112 in the inner direction of the connecting pipe 110 so that the rubber packing 120 is also moved in the first packing And moves along the support surface 111 and the second packing support surface 112 in the inward direction of the coupling pipe 110. At this time, the rubber packing 120 is gradually contracted so that the distance between the small-sized fastening rings 141 is narrowed so that the plurality of pressing projections 141d press the periphery of the pipe 10, 10 ' do. In this state, the lid portion 132 of the tightening nut 130 covers each of the small-sized tightening rings 141, whereby the rubber packing 120 and each small-sized tightening ring 141 are fixed to the tightening nut 130 It does not protrude outward or fall out.

According to the pipe connector according to the embodiment of the present invention, a pressing protrusion 141d is formed on the inner surface to prevent the pipe 10, 10 'inserted into the connection pipe 110 from being firmly engaged or disengaged. The tightening ring 140 for pressing the periphery of the pipes 10 and 10 'tightly presses the periphery of the pipes 10 and 10' without twisting and deforming in the tightening nut 130, 141 are coupled to the rubber packing 120 and are covered with the lid portion 132 of the tightening nut 130 so that the tightening ring 140 can be prevented from protruding and leaving the outside of the tightening nut 130 .

Therefore, it is possible to prevent the pipes 10 and 10 'inserted into the connection pipe 110 from being firmly engaged and separated when the two pipes 10 and 10' are connected to each other, Tightness effect of the water-tightness can be improved.

The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features presented herein.

Claims (4)

A first packing supporting surface extending from the respective opened ends so as to decrease in diameter toward the inside of the pipe, and a second packing supporting surface extending from the opening end toward the inside of the pipe, A connecting tube including a second packing supporting surface;
A fastening nut including a female screw portion formed on an inner surface thereof and a lid portion perpendicular to an inner surface formed with the female screw portion, the female screw portion being coupled to both ends of the coupling tube by being engaged with the male screw portion;
A ring-shaped rubber packing inserted into the first packing supporting surface or the second packing supporting surface to be coupled to a pipe inserted into the connecting pipe; And
And a tightening ring which is located at a rear end of the rubber packing and presses the periphery of a pipe inserted into the connection pipe, the tightening ring comprising two or more small-sized tightening rings in the form of an arc, And a tightening ring configured to be positioned at a rear end of the rubber packing so as to be spaced a predetermined distance from a surface perpendicular to the circumferential direction of the arc shape at both ends of the arc shape of the arc shape of the arc shape,
Wherein the rubber packing comprises two or more engagement grooves formed in the surfaces corresponding to the two or more sub-tip tightening rings,
Wherein the two or more sub-tightening tightening rings include: a press-down projection projecting from the inner surface of each of the sub-tip tightening rings and including a first surface inclined in the normal direction in the insertion direction of the pipe and a second surface perpendicular to the insertion direction of the pipe; And a fastening protrusion formed on a surface corresponding to the rubber packing and fastened to the fastening groove,
Wherein an outer surface of the rubber packing and an outer surface of the small-end tightening ring are inclined at an angle corresponding to the first packing supporting surface and the second packing supporting surface,
Wherein the rubber packing and the small-end tightening ring are arranged such that the outer surface of the rubber packing and the slanted outer surface of each of the sub-tightening rings closely contact the first packing supporting surface and the second packing supporting surface, Is received inside the packing support surface,
Wherein when the tightening nut is coupled to the coupling tube, the lid portion presses the two or more small-end tightening rings inward of the coupling tube, wherein the two or more small- 1 packing supporting surface and the second packing supporting surface, and moves in the inward direction of the connecting pipe.
Piping connector. delete delete delete
KR1020150084383A 2015-06-15 2015-06-15 Pipe connector for non welding constructing of pipes KR101578031B1 (en)

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KR1020150084383A KR101578031B1 (en) 2015-06-15 2015-06-15 Pipe connector for non welding constructing of pipes

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Application Number Priority Date Filing Date Title
KR1020150084383A KR101578031B1 (en) 2015-06-15 2015-06-15 Pipe connector for non welding constructing of pipes

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KR101578031B1 true KR101578031B1 (en) 2015-12-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116624683A (en) * 2023-05-30 2023-08-22 荣瑞灭菌技术(沭阳)有限公司 Preheating chamber blast pipe connecting device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001021042A (en) * 1999-07-07 2001-01-26 Riken Corp Mechanical pipe joint
KR200431138Y1 (en) * 2006-08-14 2006-11-14 이학민 One touch a hose conection for coupling
KR20070079965A (en) * 2007-07-19 2007-08-08 최의영 Insertting type double contacting joint
KR20090055297A (en) * 2007-11-28 2009-06-02 이춘의 Pipe arrangement coupling

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001021042A (en) * 1999-07-07 2001-01-26 Riken Corp Mechanical pipe joint
KR200431138Y1 (en) * 2006-08-14 2006-11-14 이학민 One touch a hose conection for coupling
KR20070079965A (en) * 2007-07-19 2007-08-08 최의영 Insertting type double contacting joint
KR20090055297A (en) * 2007-11-28 2009-06-02 이춘의 Pipe arrangement coupling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116624683A (en) * 2023-05-30 2023-08-22 荣瑞灭菌技术(沭阳)有限公司 Preheating chamber blast pipe connecting device
CN116624683B (en) * 2023-05-30 2023-11-21 荣瑞灭菌技术(沭阳)有限公司 Preheating chamber blast pipe connecting device

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