Clamp for piping with packing

Abstract

The present invention relates to a pipe clamp to which a packing is attached, comprising two upper and lower clamps (100, 200). Both ends of the upper and lower clamps (100, 200) have flanges (110, 210) formed therein, and bolt holes (1) are formed in the upper and lower flanges (110, 210) to be joined or separated by bolts (2). The portions where the upper and lower flanges (110, 210) of the upper and lower clamps come into contact with each other are formed with corresponding convex portions (10) and concave portions (20) to ensure secure fastening. Additionally, a packing is installed inside the upper and lower clamps (100, 200) to prevent leakage. In addition, the above packing is made of rubber. The present invention forms convex and concave portions on the surfaces where the upper and lower flanges of a pipe clamp meet each other, thereby ensuring a secure connection center on the flange surface during fastening and secure mutual connection of parts even after fastening, and allowing for quick and simple assembly and disassembly of the clamp. In addition, the packing member inside the clamp has a fluid receiving section formed as a space to accommodate the initially leaking fluid, so there is absolutely no leakage of fluid to the outside. Furthermore, as the initially leaked fluid is received in the fluid receiving section, the pressure caused by the fluid increases, thereby making it more watertight and preventing continuous leakage of fluid. Additionally, since fluid receiving sections are formed at both ends of the packing, there is a significant effect of maintaining watertightness more efficiently.

Description

Technology Field

[0001] The present invention relates to a pipe clamp to which a packing is attached, and more specifically, to a pipe clamp in which a convex portion and a concave portion are formed on the surfaces where the upper and lower flanges of the pipe clamp meet each other, thereby ensuring that the center of fastening on the flange surface is secure during fastening and that the mutual connection of the parts is secure even after fastening, and that the assembly and disassembly of the clamp are quick and simple.

[0002] In addition, the packing member inside the clamp has a fluid receiving section formed as a space for receiving the initially leaking fluid, so there is no leakage of fluid to the outside. Furthermore, as the initially leaking fluid is received in the fluid receiving section, the pressure caused by the fluid increases, thereby making it more watertight and preventing continuous leakage of fluid. Additionally, since fluid receiving sections are formed at both ends of the packing, it is possible to maintain watertightness more efficiently. This relates to a pipe clamp to which a packing is combined. Background Technology

[0003] Generally, pipe clamps have been developed for connecting water supply pipes, etc., and said pipe clamps must have airtightness and durability. As an example of prior art, Publication No. 10-1422935 describes a pipe connection clamp for connecting a pair of pipes, wherein a pair of semicircular clamp bodies are provided, each having a receiving groove formed to accommodate a packing provided between a flange formed at the connection part of each pipe and said flange, and said receiving groove is formed to be tapered so that the width narrows from one side to the other.A device for preventing the second pipe from detaching, connected to a flange for connecting the second pipe to a first pipe, comprising: a clamping body; and a pressure part formed as a member separate from the clamping body, and formed on an inner circumference in the shape of a cone, a frustum of a cone, a polygonal pyramid, and a frustum of a polygonal pyramid, wherein at least a portion including the polygonal pyramid and the base edge of the polygonal pyramid presses against the outer circumference of the second pipe. and includes a pressure member fixing member provided on the inner circumference of the clamping body portion and accommodating the remaining portion of the pressure member such that at least a portion of the pressure member is exposed toward the center of the clamping body portion, wherein the pressure member is arranged such that the apex of the horn faces the direction of departure of the second pipe and the base of the horn faces the direction of insertion of the second pipe so that movement in the insertion direction is easy and movement in the departure direction is difficult, wherein the clamping body portion is formed by combining at least two assembly members formed in an arc shape, and at each end of the assembly member, an extension portion extending outwardly and a fastening hole for fastening between the assembly members are formed penetrating the extension portion, wherein when assembling the clamping body portion, at least one of each adjacent pair of extension portions has a spacing portion formed therein that allows the pair of extension portions to be tightened by a bolt inserted into the fastening hole and a nut corresponding to the bolt, thereby separating the pair of extension portions so that the pressure member and the second pipe can be further pressed. The pressure fixing member is disclosed as a clamp having constant elasticity in the center direction of the second pipe.

[0004] In addition, Registered Patent Publication No. 0974605 discloses a pipe connection packing in the shape of a ring, which is interposed between a female pipe section and a male pipe section to seal between them, wherein a ring groove section is formed on the inner circumferential surface of the packing, and a ring surface section of a certain length is provided between the ring groove sections, which are intermittently disconnected along the circumferential direction and form the same plane as the inner circumferential surface of the packing, and a plurality of the ring surface sections are provided at regular intervals along the entire circumferential direction along the ring groove section, and a plurality of the ring groove sections are provided at equal intervals along the axial direction of the packing, and the ring surface sections of the ring groove section are arranged in an alternating zigzag shape with adjacent ring surface sections. Additionally, Publication No. 10-2022-0070732 discloses a pipe connection clamp. However, the above-mentioned conventional technologies had disadvantages such as uncertainty in the connection center of the upper and lower clamps when fastening the pipe clamp, uncertainty in the mutual connection of parts even after fastening, resulting in reduced packing function and easy leakage, taking a long time to assemble and disassemble the clamp, leakage of the packing after prolonged use, difficulty in fastening with the clamp, and defects occurring in the connection area between the clamp and the packing. The problem to be solved

[0005] The present invention has been devised to solve the aforementioned problems, wherein convex and concave portions are formed on the surfaces where the upper and lower flanges of a pipe clamp meet each other, thereby ensuring that the center of fastening on the flange surface is secure during fastening and that the mutual connection of the parts is secure even after fastening, and that the assembly and disassembly of the clamp are quick and simple.

[0006] In addition, the packing member inside the clamp has a fluid receiving section formed as a space to accommodate the initially leaking fluid, so there is no leakage of fluid to the outside. Furthermore, as the initially leaking fluid is received in the fluid receiving section, the pressure caused by the fluid increases, thereby making it more watertight and preventing continuous leakage of fluid. Additionally, since fluid receiving sections are formed at both ends of the packing, the packing can maintain watertightness more efficiently. The purpose is to provide a pipe clamp that incorporates a packing. means of solving the problem

[0007] The present invention relates to a pipe clamp to which a packing is attached, comprising two upper and lower clamps (100, 200). Both ends of the upper and lower clamps (100, 200) have flanges (110, 210) formed therein, and bolt holes (1) are formed in the upper and lower flanges (110, 210) to be joined or separated by bolts (2). The portions where the upper and lower flanges (110, 210) of the upper and lower clamps come into contact with each other are formed with corresponding convex portions (10) and concave portions (20) to ensure secure fastening. Additionally, a packing is installed inside the upper and lower clamps (100, 200) to prevent leakage.

[0008] In addition, the above packing is characterized by being made of rubber material. Effects of the invention

[0009] Accordingly, the present invention forms convex and concave portions on the surfaces where the upper and lower flanges of a pipe clamp come into contact with each other, thereby ensuring that the center of fastening on the flange surface is secure during fastening and that the mutual connection of the parts is secure even after fastening, and that the assembly and disassembly of the clamp are quick and simple.

[0010] In addition, the packing member inside the clamp has a fluid receiving section formed as a space to accommodate the initially leaking fluid, so there is absolutely no leakage of fluid to the outside. Furthermore, as the initially leaked fluid is received in the fluid receiving section, the pressure caused by the fluid increases, thereby making it more watertight and preventing continuous leakage of fluid. Additionally, since fluid receiving sections are formed at both ends of the packing, there is a significant effect of maintaining watertightness more efficiently. Brief explanation of the drawing

[0011] FIG. 1 is a perspective view of a pipe clamp in which a fastening surface is formed on a flange (contact surface a is a straight line). FIG. 2 is a front view of FIG. 1. FIG. 3 is a perspective view of a pipe clamp in which a fastening surface is formed on a flange (contact surface a is diagonal). FIG. 4 is a front view of FIG. 3. FIG. 5 is a perspective view of the upper and lower clamp contact surface of the present invention with a step formed therein. FIG. 6 is a perspective view of a pipe packing of the present invention. FIG. 7 is an internal view of the pipe packing of the present invention. FIG. 8 is a cross-sectional view of the pipe packing of the present invention. FIG. 9 is a side structural diagram of the pipe packing of the present invention. FIG. 10 is a front view of FIG. 9 FIG. 11 is a side view of the packing structure for a pipe according to the present invention. FIG. 12 is a front view of FIG. 11 FIG. 13 is a perspective view of a packing for a pipe according to the present invention. Specific details for implementing the invention

[0012] The present invention relates to a pipe clamp to which a packing is attached, comprising two upper and lower clamps (100, 200). Both ends of the upper and lower clamps (100, 200) have flanges (110, 210) formed therein, and bolt holes (1) are formed in the upper and lower flanges (110, 210) to be joined or separated by bolts (2). The portions where the upper and lower flanges (110, 210) of the upper and lower clamps come into contact with each other are formed with corresponding convex portions (10) and concave portions (20) to ensure secure fastening. Additionally, a packing is installed inside the upper and lower clamps (100, 200) to prevent leakage.

[0013] In addition, the above packing is characterized by being made of rubber material.

[0014] In addition, the convex portion is characterized by having a curved outer surface, and the corresponding concave portion is also characterized by having a curved inner surface.

[0015] In addition, the convex portion is triangular, and the corresponding concave portion is also triangular.

[0017] The present invention will be described in detail with reference to the attached drawings as follows. FIG. 1 is a perspective view of a pipe clamp in which a fastening surface is formed on a flange (contact surface a is a straight line), FIG. 2 is a front view of FIG. 1, FIG. 3 is a perspective view of a pipe clamp in which a fastening surface is formed on a flange (contact surface a is a diagonal line), FIG. 4 is a front view of FIG. 3, FIG. 5 is a perspective view in which a step is formed on the upper and lower clamp contact surfaces of the present invention, FIG. 6 is a perspective view of a pipe packing of the present invention, and FIG. 7 is an internal view of a pipe packing of the present invention.

[0019] The present invention is a pipe clamp for connecting left and right pipes. The clamp is mainly made of stainless steel or metal. The pipe clamp is divided into two upper and lower clamps (100, 200), and flanges (110, 210) are formed at both ends of the upper and lower clamps (100, 200). Bolt holes (1) are formed in the upper and lower flanges (110, 210) so that they are joined or separated by bolts (2). Furthermore, the parts where the upper and lower flanges (110, 210) of the upper and lower clamps come into contact with each other are formed with corresponding convex parts (10) and concave parts (20) so that they are fastened together.

[0020] The aforementioned convex portion is curved, and the corresponding concave portion is also curved. In particular, the cross-section of the convex portion is semicircular. Furthermore, for joining purposes, one convex portion and one concave portion are formed correspondingly on the flange. The convex portion and the concave portion are formed in the center of the left and right width directions of the flange. The ends of the left and right side joining portions, which serve as the corners of the flange, are curved and formed with a lower height than the corresponding right and left side joining portions, thereby creating a gap at the point where the corners of the upper and lower flanges meet. Additionally, a gap is naturally formed between the convex portion and the concave portion.

[0021] Therefore, in the present invention, a contact portion is formed in which a part of the outer surface of the convex portion and a part of the inner surface of the concave portion come into point contact with each other.

[0022] Due to the above contact portion, the left and right side joints of the upper flange and the left and right side joints of the lower flange are spaced apart from each other.

[0023] In another embodiment, the upper flange (110) is composed of a straight left side connecting part (111), a central convex part (112), and a straight right side connecting part (113).

[0024] The lower flange (120) is composed of a straight-shaped left side connecting part (121), a central concave part (122), and a straight-shaped right side connecting part (123). At this time, the central convex part of the upper flange can be formed with a cross-section that is not semicircular but trapezoidal, as shown in FIG. 2 (reference numeral 112). The curved portion of the inner side of the central concave part of the lower flange that contacts the hypotenuse of the trapezoidal cross-section is formed as a curve, but can be formed as a straight section corresponding to the straight hypotenuse of the trapezoidal cross-section so that they make line contact with each other.

[0025] In another embodiment, the central convex portion has a triangular cross-section, and the corresponding central concave portion is also triangular. At this time, the left and right side joint portions of the upper and lower flanges are formed to be straight.

[0027] Meanwhile, the upper and lower flanges (110, 210) are formed such that their widths in the left-right direction decrease as they extend outward in the radial direction. Additionally, the lower surface of the upper flange (110) and the upper surface of the lower flange (210) have a square cross-section formed at a certain position in the radial direction, and when they come into contact with each other, a square hole is formed in the left-right direction. When the pipe is gripped in a round shape by the pipe clamp based on the square groove, the contact area, which is the pipe gripping part, is in contact with the upper and lower surfaces in a straight line. As described above, the outer side of the area where the upper and lower surfaces meet in a straight line is where the flange portions come into contact with the convex and concave parts. In other words, the contact area formed by the square groove consists of two places: an inner side that comes into contact in a straight line and an outer side that comes into contact with the convex and concave parts. The area where the inner side meets in a straight line can be configured to form a diagonal slope to make the contact surface wider and to distribute the force.

[0028] In addition, the present invention includes a packing inserted inside the hollow housing of the pipe clamp to prevent fluid flowing inside the pipe from leaking to the outside.

[0029] A nut is attached to the above bolt.

[0030] In addition, as shown in FIG. 5, the present invention has a stepped surface where the upper and lower clamps are joined, making joining easy. Due to the action of the stepped surface, the internal circular rubber packing is properly joined without any part of it getting pinched or pushed, ensuring airtightness and preventing leakage. Furthermore, the stepped surface prevents the rubber packing from being pinched and bursting between the upper and lower clamps, and also prevents deformation.

[0032] Meanwhile, the packing of the present invention is a pipe packing that is inserted into a hollow housing as shown in FIGS. 6 and 7 to prevent fluid flowing inside the pipe from leaking to the outside.

[0033] The body of the packing (100) is formed in the shape of a hollow body and consists of an outer circumference (110) located outside the pipe, left and right sides (120, 130) formed downward from both ends of the outer circumference (110), and an inner circumference (140) formed towards the center from the left and right sides (120, 130). The inner circumference (140) is divided into left and right inner circumferences (141, 142) by forming a gap (1), and fluid enters and exits through the gap (1). The pipe packing is manufactured by injecting molten rubber into a mold (3000).

[0034] The above outer periphery (110) is symmetrical with respect to the center, and the diameter decreases on the left and right sides toward the center, with inclined surfaces formed on the left and right sides, respectively.

[0035] On the inner wall surface of the outer periphery (110), left and right protruding ridges (111, 112) are formed in a downward direction, and the ends of the left and right protruding ridges (111, 112) respectively come into contact with the inner wall surface of the inner periphery (140).

[0036] The above left and right inner portions (141, 142) are formed symmetrically with respect to the center.

[0037] A step (2) is formed on the outer surface of the left and right inner portions (141, 142), and the step (2) has an inclined surface with a diameter that increases as it moves outward from the center of the packing, so that when a pipe is inserted, the left and right inner portions (141, 142) are prevented from folding outward due to the inclined surface.

[0038] The ends of the left and right inner portions (141, 142) protrude vertically downward to form left and right support pieces (151, 152), respectively, and the outer surfaces of the left and right support pieces (151, 152) are inserted to support both ends of the left and right pipes.

[0039] The ends of the left and right support pieces (151, 152) are each formed with semicircular horizontal holes (151-1, 152-1) spaced apart at regular intervals along the circumferential direction, and semicircular vertical holes (151-2, 152-2), which are smaller than the semicircular horizontal holes (151-1, 152-1), are each formed in the inner direction, which is vertical from the semicircular horizontal holes (151-1, 152-1). This ensures that even if the sides of the left and right support pieces (151, 152) come into contact with each other by the left and right pipes inserted into the body, the semicircular horizontal holes (151-1, 152-1) come into contact to form a large circular hole shape, and the semicircular vertical holes (151-2, 152-2) also form a small circular hole shape, allowing fluid to easily flow into the inner circumferential part (140), which is the fluid receiving part. It is to enable inflow.

[0040] The above semicircular vertical holes (151-2, 152-2) are round hole shapes.

[0041] The above semicircular horizontal holes (151-1, 152-1) are each formed at regular intervals along the circumferential direction of the left and right support pieces.

[0042] In order for fluid to easily flow into the inner portion of the fluid receiving portion even when the ends of the left and right protruding ridges (111, 112) formed to protrude downward from the inner wall surface of the outer portion (110) of the body by the left and right pipes inserted into the interior of the packing body come into contact with the inner surface of the left and right inner portions (141, 142) of the body, the ends of the left and right protruding ridges (111, 112) are each formed with left and right first flow passage holes (111-1, 112-1) communicating with the inner portion of the fluid receiving portion, so that fluid can flow easily into the inner portion of the fluid receiving portion.

[0043] The first Eurohole (111-1, 112-1) above is formed in a triangular shape.

[0044] On the inner surface of the left and right inner portions (141, 142) above, a triangular-shaped left and right second flow holes (141-1, 142-1) corresponding to the left and right first flow holes (111-1, 112-1) of the left and right protruding jaws (111, 112) are respectively formed, so that when the pipe is inserted into the interior of the body and comes into contact with the left and right protruding jaws (130), the left and right first flow holes (111-1, 112-1) of the left and right protruding jaws (111, 112) and the left and right second flow holes on the inner surface of the left and right inner portions (141, 142) form a rectangular shape.

[0045] The above-mentioned first Euro holes (111-1, 112-1) and second Euro holes on the left and right sides are each formed at regular intervals along the circumferential direction of the inner surfaces of the left and right protruding jaws (111, 112) and the left and right inner parts (141, 142).

[0046] The left and right first flow holes (111-1, 112-1) formed in the left and right protruding jaws (111, 112) are in the shape of round holes.

[0047] When fluid flowing inside the pipe leaks and flows into the inner circumference, which is the fluid receiving part, through the left and right first flow holes (111-1, 112-1), fluid pressure is formed inside the inner circumference, which is the fluid receiving part, and the left and right inner circumference parts (141, 142) are firmly attached to the outer surface of the pipe, thereby making the pipe watertight.

[0048] Furthermore, in order to prevent the rubber packing from slipping due to the characteristics of its soft material, the clamp step surface formation described above in the present invention ensures that the clamp and the rubber do not get stuck or slip when they are tightly fastened together. In other words, it prevents the holes formed by the contact between the 1st and 2nd flow holes, as well as the holes formed by the contact between the horizontal and vertical holes, from becoming crooked and not forming a perfect circle, thereby preventing inaccurate flow and uneven pressure that would otherwise lead to reduced airtightness performance; instead, it helps to ensure that a perfect circle is formed. Additionally, the present invention is configured such that the horizontal length of the clamp's outer diameter is slightly larger than its vertical length, allowing the packing to be securely attached to the clamp. Furthermore, after attachment, the rubber packing is properly connected without any part getting stuck or slipping, ensuring a secure airtight seal and preventing leakage.

[0050] FIG. 8 is a cross-sectional view of a pipe packing of the present invention,

[0051] This describes the first Eurohole (111-1, 112-1) (cone-shaped structure) which serves as the second inlet, and due to the conical shape, the internal pressure can be maintained without escaping like a trap.

[0053] FIG. 9 shows the structure of a pipe packing. After the pipe packing is fastened, pressure enters through the horizontal holes (151-1, 152-1) and vertical holes (151-2, 152-2), which serve as the primary inlet of 152-2, and through the primary fluid receiving port.

[0054] This is a side structural diagram of a pipe packing in which pressure passes through the first Eurohole (111-1, 112-1) of 111-1, 111-2 / 141-1, 141-2 and expands the pipe packing in the secondary fluid receiving port to strengthen the sealing force.

[0055] Fig. 10 is a front view of Fig. 9.

[0056] FIG. 11 is a side view of a pipe packing structure in which, due to the structural shape (cone) of the first flow hole (111-1, 112-1) which serves as a secondary inlet, the pressure flowing into the secondary fluid receiving port increases as pressure is applied through the first flow hole (111-1, 112-1), but the pressure loss due to the conical structure is small, so the water pressure is strengthened as the pressure increases.

[0057] Fig. 12 is a front view of Fig. 11.

[0058] FIG. 13 is a pipe packing structure diagram in which the pipe stopper is formed in multiple numbers in the case of 151 pipe stopper, so that even if a part is damaged, the pipe stopper is formed and the water-stopping force is not affected even if 151 is damaged. Explanation of the symbols

[0060] 100 : Packing 110 : Outer part 111 : 112 : Left and right protruding jaw 111-1, 112-1 : 1st Eurohall 120, 130: Left and right sides 140: Inner periphery 141, 142: Left and right inner parts 141-1, 142-1: 2nd Eurohall 151, 152: Left and right support pieces 151-1, 152-1: Horizontal holes 151-2, 152-2: Vertical holes 1 : Gap 2 : Step 1000 : Pipe clamp 100, 200: Upper and lower clamps 110, 210: Upper and lower flanges 111 : Left side connecting part 112 : Central convex part (112) 113 : Right side connecting part (113) 121: Left side joint 122: Central concave part 123 : Right side connecting part 300 : Piping 10: Convex part 20: Concave part 1 : Rubber gasket 2 : Bolt 3 : Nut a : Inner contact surface b : Outer contact surface 4 : Primary fluid receiving area 5 : Secondary fluid receiving area

Claims

Claim 1 A pipe clamp comprising two upper and lower clamps (100, 200), wherein flanges (110, 210) are formed at both ends of the upper and lower clamps (100, 200), and bolt holes (1) are formed in the upper and lower flanges (110, 210) to be joined or separated by bolts (2), wherein the parts where the upper and lower flanges (110, 210) of the upper and lower clamps come into contact with each other are formed with corresponding convex parts (10) and concave parts (20) to ensure secure fastening, wherein a packing is installed inside the upper and lower clamps (100, 200) to prevent leakage, wherein the packing is made of rubber material, wherein the convex part has a curved outer surface and the corresponding concave part has a curved inner surface and a fastening surface is formed on the flange, wherein the inner circumference (140) of the body of the packing has a gap (1) formed therein on the left and right sides The pipe packing is manufactured by injecting molten rubber into a mold (3000), wherein the left and right inner portions (141, 142) are each separated and fluid enters and exits through the gap (1), and the left and right inner portions (141, 142) are formed symmetrically with respect to the center, and a step (2) is formed on the outer surface of the left and right inner portions (141, 142), wherein the step (2) has an inclined surface in which the diameter increases as it extends outward from the center of the packing, thereby preventing the left and right inner portions (141, 142) from folding outward due to the inclined surface when a pipe is inserted, and the ends of the left and right inner portions (141, 142) protrude vertically downward to form left and right support pieces (151, 152) respectively, and the outer surfaces of the left and right support pieces (151, 152) are inserted into the left and right pipes. Each of the two ends is supported, and the ends of the left and right support pieces (151, 152) are each formed with semicircular horizontal holes (151-1, 152-1) spaced apart at regular intervals along the circumferential direction, and a semicircular vertical hole (151-2) smaller than the semicircular horizontal hole (151-1, 152-1) is also formed in the inner direction, which is vertical from the semicircular horizontal hole (151-1, 152-1).Even if the sides of the left and right support pieces (151, 152) come into contact with each other by the left and right pipes inserted into the interior of the body, the semicircular horizontal holes (151-1, 152-1) come into contact to form a large circular hole shape, and the semicircular vertical holes (151-2, 152-2) also form a small circular hole shape so that fluid can easily flow into the inner circumference (140) which is the fluid receiving part. The semicircular vertical holes (151-2, 152-2) are in the shape of round holes, and the semicircular horizontal holes (151-1, 152-1) are each formed in multiple numbers spaced apart at a certain interval along the circumference of the left and right support pieces. The left and right protruding ridges (111) are formed protruding downward from the inner wall surface of the outer circumference (110) of the body by the left and right pipes inserted into the interior of the packing body. Even if the end portion of the left and right protruding ridge (111, 112) comes into contact with the inner surface of the left and right inner circumference portions (141, 142), which are the inner surfaces of the body, fluid can easily flow into the inner circumference portion that is the fluid receiving portion. In this way, left and right first flow holes (111-1, 112-1) communicating with the inner circumference portion of the fluid receiving portion are respectively formed at the end portions of the left and right protruding ridges (111, 112), and the first flow holes (111-1, 112-1) are formed in a triangular shape. On the inner surface of the left and right inner circumference portions (141, 142), left and right second flow holes (141-1, 142-1) in a triangular shape corresponding to the left and right first flow holes (111-1, 112-1) of the left and right protruding ridges (111, 112) are respectively formed, so that when the pipe is inserted into the interior of the body, to the left and right protruding ridges (130) When in contact, the left and right first flow holes (111-1, 112-1) of the left and right protruding jaws (111, 112) and the left and right second flow holes on the inner surface of the left and right inner circumference parts (141, 142) form a rectangular shape, and a plurality of the left and right first flow holes (111-1, 112-1) and left and right second flow holes are each formed at regular intervals along the circumferential direction of the inner surface of the left and right protruding jaws (111, 112) and the left and right inner circumference parts (141, 142), and the left and right protruding jaws (111,The left and right first flow holes (111-1, 112-1) formed in 112) are in the shape of round holes. The convex and concave portions are curved in shape, specifically semicircular. For connection, one convex portion and one concave portion are formed correspondingly on the flange. The convex and concave portions are formed in the center of the left and right width directions of the flange. The ends of the left and right side connection portions, which are the corners of the flange, are curved and formed to be lower in height than the corresponding right and left side connection portions, thereby forming a gap at the point where the corners of the upper and lower flanges meet, and also forming a gap between the convex and concave portions. A stepped surface is formed on the surface where the upper and lower clamps are connected, facilitating connection. Due to the action of the stepped surface, the internal circular rubber packing is properly connected without any part being pinched or pushed, ensuring airtightness and preventing leakage. The stepped surface also prevents the rubber packing from being pinched and bursting between the upper and lower clamps, and also prevents deformation. A pipe clamp having a fastening surface formed on a flange, characterized in that, while preventing, the horizontal length of the clamp's outer diameter is formed to be larger than the vertical length, so that when a packing is attached to the clamp, it is well attached, and after attachment, a part of the rubber packing is not pinched or pushed out. Claim 2 delete Claim 3 delete

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