Grooved joint with improved watertightness

Abstract

The present invention relates to a grooved joint with improved watertightness, in which a packing member and a clamping member are combined such that a joint part of a pipe does not make, while fitted thereto, surface contact with the end portion of a joint part of the opposite side pipe. The present invention relates to the grooved joint comprising the packing member and the clamping member so as to enable two adjacent pipes, which have stopping grooves to form the joint parts at both sides thereof, to be watertight, wherein the packing member is formed such that coupling grooves are symmetrically formed by means of an external socket coming into surface contact with the outer surfaces of the joint parts and an internal socket coming into surface contact with the inner surfaces thereof with respect to a partition wall coming into surface contact with the end portions of the joint parts.

Description

Groove joint with improved watertightness

[0001] The present invention relates to a groove joint with improved watertightness, and more specifically, to provide a groove joint with improved watertightness by combining a packing member and a clamping member so that the joint of a pipe does not come into surface contact with the end of the joint of the opposing pipe when the joint of the pipe is fitted.

[0002] A groove joint is a connecting piece used to connect two adjacent pipes in a watertight manner, and various configurations are proposed.

[0003] A representative example is a fast groove joint proposed in Korean Patent Publication No. (A) 10-2018-0084229 (July 25, 2018), which comprises: a clamp having a ring gasket inserted therein so as to be able to connect pipes arranged in series along the length direction, a pair of mutually divided clamps having fastening flanges formed on both sides for fastening; and a ring gasket inserted into the inside of the clamp, the ring gasket having a protrusion formed to protrude toward the center and a groove formed in the shape of a groove on the protrusion to allow gas or liquid to flow, the protrusion having a groove formed on the inside so as to align the position of the pipe and maintain the straightness of the pipe.

[0004] In the case of the above-mentioned prior art, by flowing gas or liquid inside the pipe through a groove portion having a semicircular groove shape, the internal pressure of the pipe can be equalized, thereby reducing the stress on the uneven portion, and thus improving the durability of the ring gasket is expected.

[0005] Another example is a fixed groove joint having a single-row fixed structure of pipes disclosed in Korean Patent Publication No. (A) 10-2021-0112005 (September 14, 2021), which comprises: a ring gasket overlaid between the joint ends of facing pipes; a pair of split couplers that divide and wrap and fix the joint ends of the pipes overlaid with the ring gaskets; And it is proposed that the split coupler is configured to include a pulling member that pulls a pair of split couplers that surround the joint ends of the pipes close to each other so that the joint ends of the pipes are divided and annularly compressed by the split couplers, and the split coupler is configured as an arch-shaped body in which an arch-shaped engaging end is formed on both left and right sides for engaging a groove groove formed at the joint end of the pipe in a stepped structure, and a compression space for accommodating a ring gasket is formed between the arch-shaped engaging ends, and an arch-shaped outer guard is formed protruding on the outside of the arch-shaped engaging end of the split coupler, which engages the groove groove in the arch-shaped engaging end in a stepped structure, and compresses the outer diameter surface of the pipe extended outward from the split coupler to fix the connected pipes in a row-aligned state, so that the connected pipes are fixed in a row-aligned state in a regular manner, thereby improving problems such as the row-alignment state being disturbed by its own load or an external force.

[0006] However, in the case of the ring gasket provided in the above-mentioned linear technologies, a double watertightness can be achieved by having a curved portion that comes into contact with the outer surface of the pipe together with a protruding portion that comes into contact with the end of the pipe, but it is difficult to provide perfect watertightness at the pipe joint.

[0007] As another example, a groove joint is proposed in Korean Patent Publication (B1) No. 10-2353971 (January 20, 2022), which is a groove joint that is joined in a state of being caught and supported by a catch support groove formed on the outer surface of each of first and second pipes arranged in a row with a certain amount of play, comprising: first and second coupling covers each having a catch support groove formed therein; a rubber ring installed between the first and second coupling covers; a fastening member that fastens the first and second coupling covers; It includes a clearance-maintaining member that is closely interposed between the side surface of the above-mentioned catch frame and the wall surface of the above-mentioned catch frame support groove to maintain the clearance, and the clearance-maintaining member is detachably coupled to the side surface of the above-mentioned catch frame and is made of an elastic material so as to be able to flexibly cope with the width of the above-mentioned catch frame support groove, and a magnet is formed at the end of the above-mentioned catch frame, and the first and second pipes are made of a magnetic material.

[0008] The above-mentioned prior art can easily prevent movement (movement) of pipes that may be caused by external loads, etc., by having a clearance-maintaining member closely interposed between the catch frame and the catch frame support groove, thereby stably maintaining the clearance formed between the pipes, and thereby prevent leakage caused by the pipes being misaligned or bent due to contact between them. However, it is difficult to provide perfect watertightness at the pipe joint.

[0009] In addition, in the case of the above-mentioned prior arts, there was a problem in that in the configuration where the insertion part (catching frame) formed in the coupling is caught in the groove (clearance) formed in the pipe, there was a problem in that when the pipe and the coupling were made of different materials and had direct surface contact, there was no insulation, causing corrosion.

[0010] Accordingly, the inventor of the present invention researched and developed the present invention to improve the watertightness-related problems in conventional groove joints.

[0011] That is, the present invention provides a groove joint with improved watertightness by providing a configuration in which the ends of the joints of both pipes are fixed by a clamping member while being fitted to a packing member without any surface contact with each other, and further, the present invention has been completed with the technical task of providing a groove joint with improved watertightness that can maintain adhesion with the packing member even when the pipe is shaken.

[0012] In addition, the present invention provides a groove joint with improved watertightness function that can prevent transfer corrosion and attenuate shocks due to earthquakes and vibrations and maintain watertightness when pipe displacement occurs by forming a watertight ring that can cover a catch groove formed at a joint on the outside of a packing member, and a catch projection formed on a clamping member presses the watertight ring, thereby completing the present invention with a technical task of the present invention.

[0013] As a means of solving the problem, the present invention

[0014] First, in a groove joint comprising a packing member and a clamping member to enable watertight sealing of two adjacent pipes with a catch groove formed so that a joint is formed on both sides; the packing member is characterized in that the joint groove is formed symmetrically by an outer socket that contacts the outer surface of the joint and an inner socket that contacts the inner surface, centered on a partition wall that contacts the end of the joint.

[0015] Second, the outer socket and inner socket constituting the above-mentioned joint are characterized by having a grounding means formed in contact with the outer and inner surfaces of the joint.

[0016] Third, the grounding means is characterized by having a plurality of protrusions or valves formed in a ring shape.

[0017] Fourth, the outer surface of the external socket is characterized by being formed in a flat or uneven shape to match the cross-sectional shape of the clamping member.

[0018] Fifth, the inner socket is characterized by a sloped shape that gradually narrows from the opening of the coupling groove toward the bulkhead.

[0019] Sixth, the edge of the external socket is formed with a watertight ring that is placed on a catch groove formed in the pipe, and is pressurized by a catch projection formed in the clamping member, thereby preventing transfer corrosion, reducing shock caused by earthquakes and vibrations, and maintaining watertightness when pipe displacement occurs.

[0020] Seventh, the clamping member is characterized in that it is formed by casting or pressing and is composed of an upper member and a lower member having a hooking projection formed on both ends of the body that contacts the outer surface of the outer socket when viewed in cross section, and is capable of clamping while wrapping the packing member.

[0021] When using the groove joint with improved watertightness provided by the present invention, the following effects are achieved.

[0022] - Since the joint ends of the pipes on both sides are in close contact with the bulkhead of the packing member, the outer and inner surfaces of the joint are wrapped by the outer socket and the inner socket, so that the fluid inside the pipe is provided with multiple water seals in the order of the inner socket, bulkhead, and outer socket.

[0023] - Even when the pipes are erected vertically with the joint ends of the pipes on both sides in close contact with the bulkheads of the packing member, the building still experiences drying shrinkage, shrinkage due to load, shrinkage and expansion due to temperature, and column shortening during an earthquake, even after completion. The packing member of the present invention provides functionality that can cover this by using a rubber cushion or the like.

[0024] -If multiple protrusions or valves are formed in a circular shape on the outer and inner sockets, the watertight functionality can be further improved.

[0025] - The clamping member is made of a cast or pressed configuration, and can be provided at a low cost, especially when provided as a pressed member.

[0026] - The outer surface of the outer socket is formed flat or uneven to match the cross-section of the clamping member, so that clamping of the packing member is provided uniformly throughout.

[0027] - Since a watertight ring is formed on the outer socket of the packing member and is placed on the engaging groove, even if the engaging projection formed on the clamping member is inserted into the engaging groove and pressurized and fixed, insulation is provided between the pipe and the clamping member, preventing transfer corrosion, and in addition, shock attenuation due to earthquakes and vibrations and watertightness can be maintained when pipe displacement occurs.

[0028] Figure 1 is an exploded perspective view showing one embodiment of a groove joint with improved watertightness provided by the present invention.

[0029] Figure 2 is a perspective view showing an example of a packing member applied to the present invention.

[0030] Figure 3 is a cross-sectional view of Figure 2.

[0031] Figures 4 and 5 are cross-sectional views showing other examples of packing members applicable to the present invention.

[0032] Figure 6 is a perspective view showing another example of a packing member applied to the present invention.

[0033] Figure 7 is a cross-sectional view of Figure 6.

[0034] Figure 8 is a perspective view showing an example of a casting configuration of a clamping member applicable to the present invention.

[0035] Figure 9 is a perspective view showing an example of a pressing configuration with a clamping member applicable to the present invention.

[0036] Figure 10 is a perspective view showing another example of a clamping member applicable to the present invention.

[0037] Figure 11 is a side cross-sectional view of a clamping member applied to the present invention.

[0038] Hereinafter, a preferred embodiment of a groove joint with improved watertightness provided by the present invention will be described based on the attached drawings.

[0039] FIG. 1 is an exploded perspective view showing one embodiment of a groove joint with improved watertightness provided by the present invention.

[0040] The groove joint (1) with improved watertight function provided in the present invention is used to connect neighboring pipes (100) in a watertight state as shown, and a catch groove (110) is formed at the end (130) of the pipe (100) so that a joint (120) is formed.

[0041] As described above, the joint (120) formed at the end of the pipe (100) based on the catch groove (110) is connected to the joint (120) of the neighboring pipe (100) by a groove joint (1) composed of a packing member (2) and a clamping member (3) so as to be watertight while in contact with the joint (120) of the neighboring pipe (100).

[0042] At this time, the packing member (2) is formed symmetrically with an outer socket (22) that interfaces with the outer surface of the joint (120) and an inner socket (23) that interfaces with the inner surface, centered on the partition wall (21) that interfaces with the end (130) of the joint (120).

[0043] And the clamping member (3) is divided into an upper member (31) and a lower member (32), and can be optionally provided as a member formed by casting or pressing.

[0044] As shown, the clamping member (3) is a product formed by pressing, and one end of the upper member (31) and the lower member (32) are connected by a pin (33), and the other end is formed by forming a nut joint (34) in the upper member (31) and connecting a fixing bolt (35) to the lower member (32) so as to be rotatable. By raising the fixing bolt (35) toward the nut joint (34) and connecting the nut (36), the upper member (31) and the lower member (32) are pressed, and the packing member (2) is pressed, thereby sealing and fixing the adjacent pipes (100) on both sides in a watertight state.

[0045] FIG. 2 is a perspective view showing an example of a packing member applied to the present invention, and FIG. 3 is a cross-sectional view of FIG. 2.

[0046] The packing member (2) provided in the present invention is made of a rubber material, and as mentioned above, a joining groove (24) is formed symmetrically left and right around the partition wall (21) that contacts the end (130) of the joint (120) formed in the pipe (100), and an outer socket (22) that interfaces with the outer surface of the joint (120) and an inner socket (23) that interfaces with the inner surface are formed.

[0047] The above-mentioned joining groove (24) is configured in a slanted shape that gradually narrows from the opening side toward the bulkhead (21).

[0048] Additionally, the outer socket (22) constituting the packing member (2) has a flat or uneven outer surface.

[0049] In the present invention, the packing member (2) configured as described above is provided with a joint (120) fitted into the joining groove (24) so ​​that the end (130) is in close contact with the bulkhead (21), and the packing member (2) is fixed with a clamping member (3) to connect the pipes (100) on both sides. At this time, the inner socket (23) having a slanted configuration that gradually narrows from the opening side toward the bulkhead (21) is pressed toward the inner surface of the joint (120) based on the middle, thereby achieving close contact. At this time, it is preferable that the angle of inclination (a) be configured to be 3 degrees or less.

[0050] Accordingly, the packing member (2) of the present invention can certainly improve watertightness because it sequentially achieves primary watertightness by grounding the inner surface of the inner socket (23) and the joint (120), secondary watertightness by close contact between the end (130) of the joint (120) and the bulkhead (21), and tertiary watertightness by grounding the outer surface of the outer socket (22) and the joint (120). In addition, since the end (130) of the end joint (120) of the neighboring pipe (100) is maintained in a state of being spaced apart by the bulkhead (21), it is possible to eliminate problems such as damage to the packing member (2) due to metal contact.

[0051] Figures 4 and 5 illustrate cross-sectional views showing other examples of packing members applicable to the present invention.

[0052] Figures 4 and 5 show a configuration of a packing member (2) provided in the present invention, in which a grounding means (25) is additionally configured to be in contact with the outer surface and inner surface of the joint (120) in the outer socket (22) and the inner socket (23).

[0053] That is, in Fig. 4, a plurality of protrusions (25a) are formed in a ring shape as a grounding means (25) that contacts the outer surface and inner surface of the joint (120) in the outer socket (22) and the inner socket (23), and in Fig. 5, a plurality of valves (25b) are formed in a ring shape as a grounding means (25) that contacts the outer surface and inner surface of the joint (120) in the outer socket (22) and the inner socket (23).

[0054] In this way, when a plurality of protrusions (25a) or valves (25b) are formed to contact the outer and inner surfaces of the joint (120) of the outer socket (22) and the inner socket (23), the watertight effect is further improved.

[0055] Figures 4 and 5 of the present invention illustrate that three protrusions (25a) or valves (25b) are formed on each of the outer socket (22) and the inner socket (23).

[0056] Therefore, when using a packing member (2) as in FIGS. 4 and 5, multi-stage primary watertightness is achieved sequentially by grounding the inner surface of the joint (120) with the projection (25a) or the valve (25b) formed in the inner socket (23), secondary watertightness by contact between the end (130) of the joint (120) and the bulkhead (21), and multi-stage tertiary watertightness is achieved by grounding the outer surface of the joint (120) with the projection (25a) or the valve (25b) formed in the outer socket (22), so that watertightness can be further improved.

[0057] Fig. 6 is a perspective view showing another example of a packing member applied to the present invention, and Fig. 7 is a cross-sectional view of Fig. 6.

[0058] This can be applied to each packing member (2) provided in various configurations as described above, and is characterized by further forming a watertight ring (26) in the outer socket (22) as shown.

[0059] The above watertight ring (26) is formed integrally with the edge side of the external socket (22) and is positioned on the opening side of the joining groove (24), and is formed to be covered with a catch groove (110) formed to form a joint (120) in the pipe (100).

[0060] In the case where the watertight ring (26) is formed integrally with the external socket (22) as described above, when connecting the pipe (100) while pressurizing the packing member (2) using the clamping member (3), the catches (31b) (32b) formed on both sides of the body (31a) (32a) of the upper member (31) and lower member (32) constituting the clamping member (3) are combined in a state where they are spaced apart from the catch groove (110) by the watertight ring (26).

[0061] The combination of the clamping member (3) in this way can reduce concerns about transfer corrosion because there is no direct contact between the pipe (100) made of stainless steel and the clamping member (3) made of iron, and can also contribute to improving watertightness by providing a shock attenuation effect due to earthquakes or vibrations, etc., and by allowing the watertight ring (26) to be fixed by the clamping member (3) to achieve a fourth watertightness.

[0062] Meanwhile, the packing member (2) provided in the present invention provides various functionalities along with the above-described functions even when the pipe (100) is connected while being installed vertically in a building.

[0063] For example, even after completion of a building, drying shrinkage, shrinkage due to load, shrinkage and expansion due to temperature, and column shortening during an earthquake occur. However, in the present invention, the end (130) of the pipe (100) is in close contact with the bulkhead (21) of the packing member (2), so it acts as a rubber cushion and can cover drying shrinkage, shrinkage due to load, shrinkage and expansion due to temperature, and column shortening during an earthquake.

[0064] FIG. 8 is a perspective view showing an example of a casting configuration of a clamping member applicable to the present invention, FIG. 9 is a perspective view showing an example of a pressing configuration of a clamping member applicable to the present invention, FIG. 10 is a perspective view showing another example of a clamping member applicable to the present invention, and FIG. 11 is a side cross-sectional view of a clamping member applicable to the present invention.

[0065] In the present invention, the clamping member (3) can be formed by forming the upper member (31) and the lower member (32) by casting as shown in Fig. 8, or by pressing an iron plate as shown in Fig. 8.

[0066] When viewed in cross section, the upper material (31) and the lower material (32) have a configuration in which a hooking projection (31b) (32b) is formed at both ends of the body (31a) (32a) to be joined to a hooking groove (110) formed in the pipe (100).

[0067] The upper member (31) and the lower member (32) configured as described above are connected to each other on one side with a pin (33) to provide a hinge function, and on the opposite side, in the case of the upper member (31), a nut joint (34) having a bolt-in groove (34a) is formed, and in the case of the lower member (32), a bolt joint (35b) is formed in which a fixing bolt (35) fitted into the bolt-in groove (34a) is connected to a fixing pin (35a) to rotate.

[0068] In addition, the clamping member (3) can be configured to be formed by pressing a casting or iron plate to form an upper member (31) and a lower member (32), as shown in Fig. 10, and forming a bracket (37) with holes formed on both sides so that they can be connected with a bolt / nut (38) as a fixing means.

[0069] The clamping member (3) having this configuration is positioned on the outside of the packing member (2) as shown in Fig. 1, so that the joint (120) formed on the pipe (100) is coupled to the packing member (2), and the hooking projections (31b) (32b) formed on both ends of the body (31a) (32a) are inserted into the coupling groove (24) formed on the pipe (100), thereby connecting the two pipes (100) to each other.

[0070] When using the groove joint (1) with improved watertight function provided by the present invention, which is configured and operated as described above, as mentioned above, the fluid inside the pipe (100) is provided with multiple watertightness in the order of the inner socket (23), bulkhead (21), and outer socket (22).

[0071] In addition, insulation is provided between the pipe (100) and the clamping member (3) of different materials, so there is no concern about corrosion, etc.

[0072] While the detailed description of the present invention describes specific embodiments, it should be understood that various modifications are possible without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should not be limited to the described embodiments, but should be determined by the claims set forth below as well as by equivalents.

[0073]

[0074] [Explanation of symbols]

[0075] 1: Groove joint (with improved watertightness)

[0076] 2: Packing member 21: Bulkhead

[0077] 22: External socket 23: Internal socket

[0078] 24: Joint groove 25: Grounding means

[0079] 25a:Protrusion 25b:Valve

[0080] 26: Watertight ring 3: Clamping member

[0081] 31: Upper member 31a, 32a: Body

[0082] 32: Sub-assembly 33: Pin

[0083] 34: Nut joint 34a: Bolt groove

[0084] 35:Fixing bolt 35a:Fixing pin

[0085] 35b: Bolt joint 36: Nut

[0086] 100:pipe 110:hook

[0087] 120: Joint 130: End

Claims

1. In a groove joint composed of a packing member and a clamping member to enable watertight sealing of two adjacent pipes with a catch groove formed so that a joint is formed on both sides; A groove joint with improved watertightness, characterized in that the above packing member is configured such that a joining groove is symmetrically formed by an outer socket that interfaces with the outer surface of the joint and an inner socket that interfaces with the inner surface, centered on a bulkhead that interfaces with the end of the joint.

2. In claim 1; A groove joint with improved watertightness, characterized in that the outer socket and the inner socket constituting the above-mentioned joint are provided with a grounding means in contact with the outer and inner surfaces of the joint.

3. In claim 2; A groove joint with improved watertightness, characterized in that the grounding means is formed with a plurality of protrusions or valves in a circular shape.

4. In claim 1; A groove joint with improved watertightness, characterized in that the outer surface of the above outer socket is formed in a flat or uneven shape to match the cross-sectional shape of the clamping member.

5. In claim 1; The above inner socket is a groove joint with improved watertightness, characterized by a sloped shape that gradually narrows from the opening side of the joint groove toward the bulkhead side.

6. In claim 1; A groove joint with improved watertightness, characterized in that a watertight ring is formed on the edge of the outer socket to be covered with a catch groove formed on a pipe, and is pressed by a catch projection formed on a clamping member to prevent transfer corrosion, attenuate shock caused by earthquakes and vibrations, and maintain watertightness when pipe displacement occurs.

7. In claim 1; The above clamping member is formed by casting or pressing, and is composed of an upper member and a lower member having a catch projection formed in a catch groove formed in a pipe at both ends of the body that contacts the outer surface of the outer socket when viewed in cross section, and is characterized in that clamping can be performed while wrapping the packing member.

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