JP5718779B2 - Ferrule fitting, ferrule fitting connection structure and ferrule fitting connection method - Google Patents

Description

  The present invention relates to a ferrule joint (also referred to as a clamp union joint or the like) used for connecting sanitary piping, and transports granular materials and liquids in plants in fields such as food, beverages, pharmaceuticals, dairy farming, and chemistry. The present invention relates to a ferrule joint used for sanitary piping, a ferrule joint connection structure, and a ferrule joint connection method.

  Sanitary piping refers to stainless steel pipes defined in JIS G3447, etc., but is manufactured and constructed in accordance with standards such as IDF (International Dairy Federation) and ISO (International Organization for Standardization) worldwide. The joint for connecting the sanitary piping is also formed of the same stainless material. Also, sanitary, that is, sanitary pipes can be disassembled and cleaned so that they can be cleaned and sterilized. It is clamped and fixed (Patent Document 1).

JP 2000-213682 A

  Sanitary piping with conventional ferrule fittings is clamped and fixed after clamping the ferrule fittings together. In many cases, the operator supports the moving piping by hand. It was necessary to perform the operation | work which hold | maintains and clamps with a clamp member on that. The same applies to the case where the clamp is released to remove the pipe. For this reason, when attaching and detaching the clamp member, at least two workers are required. In particular, when the work space is small, there is a problem that work is difficult and workability is poor.

  The present invention was made to solve such a problem, and its purpose is to remove and attach the clamp member in the sanitary piping (i.e., the piping connecting operation, the disassembling operation when cleaning and sterilizing the piping, In addition, a new ferrule joint that can temporarily hold and hold the pipe so that the work can be easily performed in the reconnection work after disassembly), and the connection structure and connection method of this ferrule joint Is to provide.

In order to solve the above-mentioned problems, the present invention is a ferrule joint disposed at an end of a sanitary pipe so as to be detachably connected by clamping the sanitary pipes with a clamp member, and has openings at both ends. A tubular joint body, a flange formed on the outer periphery of one end of the joint body, and abutted and clamped to the mating ferrule joint via a seal member at the time of connection; There is at least one temporary locking engagement member that engages with the counterpart ferrule joint for locking, and the temporary locking locking member has a proximal end fixed to the flange portion and a distal end extending outward. And a locking claw (51) that has a trapezoidal recess that engages with the mating ferrule joint and that does not interfere with the clamp member during clamping, and the recess is connected Wherein the engage the other ferrule joint between fittings and is supported on the other ferrule fittings for temporarily holding the state of abutting, characterized by.

  With such a configuration, it is possible to provide a ferrule joint that temporarily engages with the mating ferrule joint for temporary fixing during connection, and temporarily holds the state in which the joints are butted together. At this time, it is not necessary for the operator to hold and hold the pair of ferrule joints temporarily fixed by the hand. For this reason, the removal | desorption operation | work of a clamp can be performed easily.

    In this case, the flange portion has a seal surface that receives and seals the seal member at the time of connection, the seal surface has a concave portion that fits into the convex portion of the seal member, and the flange portion is temporarily fixed. At this time, the sealing member may be formed to be fitted.

  With such a configuration, in the temporary fixing, in addition to the engagement of the temporary fixing locking member, the sealing member and the flange portion can be fitted to ensure the holding.

  Moreover, the sanitary pipe with a joint according to the present invention is characterized in that the ferrule joint described above is disposed at at least one end of the sanitary pipe.

  With such a configuration, it is possible to temporarily hold the state in which the joints are engaged with each other at the time of temporary fixing and the joints are abutted with each other. Sanitary piping can be provided.

Furthermore, the connection structure of the ferrule joint according to the present invention includes a seal member including one ferrule joint disposed at the end of one sanitary pipe and another ferrule joint disposed at the end of another sanitary pipe. a connecting structure of a ferrule joint is detachably connected to the clamp by close contact so clamping member through either one or both of the first ferrule fittings or other ferrule fittings, Ri ferrule joint der described above ,
The recess engages with the mating ferrule joint,
The locking member and the clamp member are clamped by the clamp member without interfering with each other.

  With such a configuration, it is possible to provide a connection structure for a ferrule joint that can be easily connected while temporarily holding the joints in a state of being temporarily fixed.

The ferrule joint connection method according to the present invention includes a seal member that connects one ferrule joint disposed at an end of one sanitary pipe and another ferrule joint disposed at an end of another sanitary pipe. A ferrule joint connection method in which the ferrule joint is detachably connected by clamping with a clamping member, and one or both of the one ferrule joint and the other ferrule joint is the above-described ferrule joint, and one ferrule In order to temporarily hold the joint and the other ferrule joint abutted through the seal member, and the temporarily fixed locking member engages with the other ferrule joint and the joints are abutted against each other. Contact the steps of temporarily fixing to be supported, the flanges of the temporarily fixed the ferrule joint at a position not interfering with the locking member Characterized in that it comprises the steps of: clamping by the clamp member Te.

  With such a configuration, it is possible to provide a ferrule joint connection method that can be easily connected. Engage with the mating ferrule joint at the time of temporary fixing, and temporarily hold the jointed state so that the operator can hold and hold the piping by hand when removing and attaching the clamp. There is no need to be.

    In this case, the one ferrule joint and the other ferrule joint are formed so as to be fitted directly or indirectly via the seal member at the respective sealing surfaces abutted via the seal member, and in the step of temporarily fixing Further, it may include temporarily fixing the joints so that the joints are directly or indirectly fitted.

  With such a configuration, it is possible to provide a ferrule joint connection method capable of ensuring the holding by fitting the seal member and the flange portion in addition to the engagement of the temporary fixing locking member during temporary fixing. .

  Since the present invention is configured as described above, it is possible to easily perform the clamping work associated with the connecting, disassembling and reconnecting operations of the pipes in the sanitary piping system, and the workability is excellent.

It is a perspective view which shows an example of the ferrule coupling which concerns on this invention. An example in which a flat packing is fitted as a seal member to the ferrule joint of FIG. 1 is shown. It is a perspective view which shows the example which temporarily fixes the sanitary piping with a joint in which the ferrule coupling shown in FIG. 1 was arrange | positioned, and the other sanitary piping with another fitting in which the other ferrule coupling which does not have a temporary fixing latching member was arrange | positioned. is there. It is a principal part longitudinal cross-sectional view which shows the connection structure temporarily fixed through the flat packing as a sealing member. It is a principal part expanded sectional view of FIG. It is explanatory drawing of the connection structure with the clearance temporarily fixed through the flat packing as a sealing member. It is a principal part longitudinal cross-sectional view which shows the connection structure temporarily fixed through the O-ring as a sealing member. It is a principal part expanded sectional view of FIG. It is explanatory drawing of the connection structure clamped with a clamp band after temporarily fixing in FIG. It is a principal part longitudinal cross-sectional view which shows the connection structure clamped with the clamp band. It is a perspective view which shows another example of the ferrule coupling which concerns on this invention. It is a perspective view which shows the example which temporarily fixes the sanitary piping with a joint in which the ferrule coupling of another example was arrange | positioned, and the other sanitary piping with another ferrule joint which is not provided with a locking member.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

FIG. 1 shows an example of a ferrule joint according to the present invention.
The ferrule joint 1 of this example (hereinafter sometimes simply referred to as “ferrule joint 1”) is preliminarily disposed at one or both ends of the sanitary pipe 3 by a fixing means such as welding at the time of connection. It is used. The ferrule joint 1 and the sanitary pipe 3 are both made of the same quality stainless steel (for example, SUS304).

  The ferrule joint 1 is a sanitary that is fixed to a joint-side opening 10 that serves as a connection port with a mating ferrule joint 2 ′ (hereinafter sometimes simply referred to as “mating ferrule joint 2 ′”). A flange portion connected to a short tubular joint body 16 having a pipe-side opening 11 serving as a connection port with the pipe 3 and a mating ferrule joint 2 ′ formed integrally on the outer periphery of the joint-side opening 10. 12 and a temporary fixing locking member 50 for temporarily fixing at the time of connection.

  The surface of the flange portion 12 that comes into contact with the mating ferrule joint 2 ′ is formed with a seal surface 13 that is perpendicular to the joint central axis of the joint body 16 of the ferrule joint 1. A locking inclined surface 14 having a constant inclination (for example, 60 degrees) is formed. When connected to the counterpart ferrule joint 2 ′, a sealing member called a gasket such as a flat packing 20 or an O-ring 22 is inserted between the sealing surfaces 13 and 13 ′ in order to seal the connection portion. When the flat packing 20 is used as a sealing member, the sealing surface 13 is formed with an annular recess 15 for fitting with the flat packing 20 and mounting the flat packing 20 (see FIGS. 2, 4, etc.). Further, when the O-ring 22 is used as a seal member, the stepped portion 17 for fitting the mating ferrule joint 2 'to accommodate the seal member, or the concave groove 18' and the convex wall 19 'are formed in an annular shape. (See FIGS. 7 and 8).

The mating ferrule joint 2 ′ is composed of the same material and the same structure as the ferrule joint 1 except that the temporary fixing locking member 50 is not provided. However, the provision of the temporary fixing locking member 50 is not prevented.
That is, the mating ferrule joint 2 'is made of the same quality stainless steel material as the ferrule joint 1, and a joint side opening 10' serving as a connection port of the ferrule joint 1 and a pipe side opening serving as a connection port of the sanitary pipe 4 '. Short joint main body 16 'provided with 11', and flange part 12 'connected with the ferrule joint 1 integrally formed in the outer periphery of joint side opening part 10'. Note that the joint-side opening 10 ′, the pipe-side opening 11 ′, and the joint body 16 ′ of the ferrule joint 2 ′ are not shown in the drawing, but refer to corresponding members of the ferrule joint 1 having the same structure shown in FIG. That.

  The surface of the flange portion 12 ′ that comes into contact with the ferrule joint 1 is formed with a seal surface 13 ′ perpendicular to the joint central axis of the joint body 16 ′, and the flange portion 12 ′ faces the joint body 16 ′. A locking inclined surface 14 ′ having a constant inclination (for example, 60 degrees) is formed. The seal surface 13 'is formed with a recess 15' in an annular shape for fitting and mounting with the flat packing 20 as a seal member (see FIG. 5 and the like).

  The counterpart ferrule joint 2 ′ is used by being preliminarily disposed on one or both ends of the sanitary pipe 4 ′ by a fixing means such as welding.

  As shown in FIGS. 1 and 2, the temporary fixing locking member 50 is fixed to the flange portion 12 of the ferrule joint 1 by welding, and the distal end side extends outwardly. A locking claw 51 that can be engaged with the locking inclined surface 14 ′ of the flange portion 12 ′ is formed.

  As shown in FIGS. 3 and 4, the temporary fixing locking member 50 is substantially along the flange portions 12 and 12 ′ so as to engage with the locking inclined surface 14 ′ of the counterpart ferrule joint 2 ′. It is formed so as to have a recess having a trapezoidal shape. In this example, the engaging claw 51 is formed so that the inclined engaging surface 53 is engaged so that the engaging inclined surface 14 ′ of the flange portion 12 ′ of the counterpart ferrule joint 2 ′ is substantially along. .

(Temporary fixing method-locking)
Next, regarding the temporary fixing method using the ferrule joint 1 configured as described above, a temporary fixing method with the counterpart ferrule joint 2 'will be described.

(Piping with fittings)
First, the ferrule joint 1 and the counterpart ferrule joint 2 ′ are fixedly attached to the ends of the sanitary pipes 3 and 4 ′, respectively. Conveniently, the diameter and thickness of the joint and the pipe are the same. Thereby, as shown in FIG. 3, the sanitary piping with a ferrule joint is formed.
Usually, it is desirable to attach the mating ferrule joint 2 'to the fixed-side pipe and attach the ferrule joint 1 to the moving-side pipe. In many cases, the part connected by the ferrule joint in the sanitary piping system is a place where cleaning or the like is periodically performed. It is because it is easy to do. The ferrule joint 1 may be attached to the fixed pipe.

(Installation of seal member)
Next, a flat packing 20 as a seal member is attached to the ferrule joint 1. FIG. 2 shows that the flat packing 20 is fitted and attached to the ferrule joint 1 shown in FIG. As shown in FIG. 2, the convex portion 21 of the flat packing 20 is inserted into the concave portion 15 of the seal surface and attached to the seal surface 13 of the ferrule joint 1. The flat packing 20 may be attached to the mating ferrule joint 2 '.
Since the flat packing 20 is fitted and closely arranged between the respective joints, the flat packing 20 is sealed, and the joints do not easily slip to each other.

(Flat packing)
2 to 4, an annular sheet made of a rubber material such as silicon or fluorocarbon resin, called a flat packing 20, is used as a sealing member. The material is selected in consideration of the powder and fluid in the pipe. As shown in FIG. 4 in an enlarged manner, this sheet is provided with convex portions 21 concentrically with the sheet on the front and back sides of the sheet surface, and annular concave portions provided on the seal surfaces 13 and 13 ′ of the respective ferrule joints. The sealing member 20 and the sealing surfaces 13 and 13 'are formed so as to be fitted and sealed by being fitted into the 15, 15'.
Accordingly, the seal is held between the seal surfaces 13 and 13 'of the ferrule joints 1 and 2' so as to hold the seal between the ferrule joints 1 and 2 '.

  Further, as will be described later, the temporary fixing locking member 50 is engaged with the locking inclined surface 14 ′ of the ferrule joint 2 ′ provided in the pipe 4 ′ of the mating ferrule joint 2 ′ to be connected to the ferrule. The joint 1 and the pipe 3 can be held, but when there is an indirect fitting structure between the joints via such a seal member, the frictional force between the seal member 20 and the ferrule joints 1 and 2 'is further increased. Therefore, the holding of the ferrule joint 1 and the pipe 3 is further ensured.

(Matching)
Next, the pipes provided with ferrule joints are butted together. Usually, the moving side pipe is moved in accordance with the fixed side pipe so that the seal faces face each other. FIG. 3 shows a case where the sanitary pipe 3 provided with the ferrule joint 1 is on the moving side and the sanitary pipe 4 ′ provided with the ferrule joint 2 ′ is on the fixed side. As described above, either one of the fixed side and the moving side can be used.

(Temporary fixing)
When both joint side openings 10 and 10 'of both ferrule joints 1 and 2' are brought into contact with each other, the locking claw 51 of the temporary locking and locking member 50 has the locking inclined surface 14 'of the mating ferrule joint 2'. The ferrule joints 1 and 2 and the sanitary pipes 3 and 4 are temporarily fixed by holding the flat packing 20 as a seal member between the seal surfaces 13 and 13 'of the ferrule joints. Is done.

(Position and action of temporary fixing locking member 50)
At this time, it is desirable that the temporary fixing locking member 50 is engaged with the ferrule joint 2 ′ so that the position thereof is on the uppermost side with respect to gravity. For example, when both the sanitary pipes 3 and 4 'are connected substantially horizontally, the temporary fixing locking member 50 is located on the uppermost side, and the upper sides of the ferrule joints 1 and 2' are temporarily fixed. The locking member 50 is used for locking. Further, since the convex portion 21 of the flat packing is intruded into the concave portions 15 and 15 'of the ferrule joint, and both the ferrule joints 1 and 2' do not move in the seal surface direction of the joint, the sanitary pipes 3 and 4 ' Temporary fixing is securely held (see FIG. 4 and the like).

In this way, the pipes that are abutted through the flat packing 20 as described above do not slide to each other on the seal surface, and the lower side of the moving side pipe that is the opposite side of the temporary fixing locking member 50 due to gravity. A moment is generated in which the longitudinal axis of the pipe is about to rotate about the location of the side seal surface. With respect to such a moment, the temporary locking member 50 is locked so that the inclined engaging surface 53 of the locking claw 51 and the locking inclined surface 14 ′ of the mating ferrule joint 2 ′ are not engaged and rotated. To do.
Therefore, the butt state can be maintained without supporting the moving side pipe. That is, the moving side pipe can be temporarily fixed.

(Function and effect)
If it can be temporarily fixed, it is not necessary to supply a machine or a worker to support the pipe in order to temporarily hold the pipe butting state in the pipe connection work. For this reason, not only the work is facilitated, but also the number of workers can be reduced. In particular, when it is necessary to work in a narrow work space, the work is remarkably facilitated. In small-scale work, it is possible to work alone. Conventionally, when clamping and fixing, it has been necessary to maintain a butt state by requiring a machine or an operator, but such a temporary fixing can eliminate the necessity.

(No clearance)
When temporarily fixing, the clearance 40 between the temporary locking claw 51 and the locking inclined surface 14 ′ may be almost zero as shown in FIGS. 4 and 5. In this example, an inclined engagement surface 53 that can be engaged with the locking inclined surface 14 ′ and hold the counterpart ferrule joint 2 is provided so that the clearance 40 becomes zero. However, it may be adjusted to an appropriate size as will be described later.

(With clearance)
FIG. 6 shows a case where there is a clearance 40. In FIG. 6, it seems that there is no clearance between the temporary pawl 51 and the locking inclined surface 14 ′, but FIG. 6 shows that the locking claw 51 is engaged with the locking inclined surface 14 ′ and locked. The gap between the seal surface 13 ′ and the flat packing substantially corresponds to the clearance 40. The clearance 40 has such a size that the locking claw 51 can be engaged with and locked with the locking inclined surface 14 ′ without causing a side slip on the sealing surfaces 13 and 13 ′, and can be easily clamped. You can limit it. For example, approximately the thickness of the flat packing 20 as a sealing member is desirable.

(O-ring)
The seal member may be an O-ring 22 instead of the flat packing 20. 7 and 8 show a case where the seal member is an O-ring 22, that is, a ring with a circular cross section made of a rubber material such as NBR. The material is selected in consideration of the powder and fluid in the pipe.
In this case, a stepped portion 17 is formed on the seal surface 13 of the ferrule joint 1, and a recessed groove 18 ′ for accommodating an O-ring and a rising stepped portion 17 are fitted on the seal surface 13 ′ of the counterpart ferrule joint 2 ′. A convex wall 19 'is formed. By fitting the stepped portion 17 and the convex wall 19 ′, a direct fitting structure is formed between the joints, and a storage space 23 surrounded by the seal surface 13 and the concave groove 18 ′ is formed. An O-ring is stored in the storage space 23. The size of the storage space may be set such that the O-ring is slightly crushed and elastically contacted with the seal surface 13 forming the storage space and the groove 18 ′ so that the O-ring can be sealed. If it does in this way, an O-ring will be accommodated in the accommodation space in a fitting structure, and will seal the connection part between joints. The ferrule joint 1 may have a concave groove, and the mating ferrule joint 2 'may have a stepped portion and a convex wall.

The temporary fixing locking member 50 is engaged with the locking inclined surface 14 ′ of the ferrule joint 2 ′ provided on the pipe 4 ′ of the mating ferrule joint 2 ′ to be connected to hold the ferrule joint 1 and the pipe 3. Although it is possible, when there is such a direct fitting structure between both joints via such a seal member, the ferrule joint 1 and the pipe 3 are more reliably held.
Also in this case, the clearance between the temporary locking member 50 and the locking inclined surface 14 ′ is such that when the O-ring is sandwiched, the fitted thickness (the convex wall 19 ′ is fitted to the stepped portion 17. If it is configured to be equal to or smaller than (depth), the holding during temporary fixing is ensured.

(Clamp)
Next, both the ferrule joints 1 and 2 'temporarily connected are clamped and fixed to each other by the clamp member 30 to constitute a ferrule joint connection structure.
The clamp member 30 is a fixing tool that is detachably fixed after the joints are brought into close contact with each other via a seal member such as the flat packing 20 and the O-ring 22. In this example, the clamp band 30 is used. Yes. As a structure, as long as it does not interfere with the temporary fixing locking member 50 at the time of clamping, a structure that is usually used in this kind of field may be used.

  As shown in FIGS. 9 and 10, the clamp band 30 is divided into two substantially semicircular holding pieces 31 that are mounted across the flange portions 12 and 12 ′ formed on the ferrule joints 1 and 2 ′. , 31, a holding body 32 provided at one end of the sandwiching pieces 31, 31 so that both the sandwiching pieces 31, 31 can be opened and closed to the left and right respectively, and the other end of the one sandwiching piece 31 are rotatably attached. The arm 34 is inserted into the notch 33 provided at the other end of the other holding piece 31 for fixing, and the wing nut 36 is screwed into the male screw portion 35 provided on the arm 34 to be fixed. .

  The clamp band 30 is wound around the flange portions 12 and 12 'of the temporarily fixed ferrule joints 1 and 2' so that the clamp pieces 31 and 31 of the clamp band 30 are covered, and the arm 34 is further rotated. When the wing nut 36 is tightened after being moved and inserted into the notch 33, the flange portions 12 and 12 'of the ferrule joints 1 and 2' are tightly fixed to each other via the seal member 20. The pipes 3 and 4 'are firmly connected to form a ferrule joint connection structure.

11 and 12 show another embodiment of the present invention.
The ferrule joint 100 of this example is provided with two temporary fixing locking members 150 in the ferrule joint 1 described above. The two temporary fixing members 150 and 150 are disposed opposite to the symmetrical center of the joint central axis of the ferrule joint 100 in order to engage with the flange portion 12 ′ of the mating ferrule joint 2 ′. Yes.
The two temporary fixing locking members 150 are not necessarily limited to this, but are preferable in that the positions facing each other by 180 degrees are most stable and allow engagement from two positions. In addition, the holding is more stable if it is positioned 180 degrees up and down. In other cases, the stability is good because it is symmetrical to be placed at an equidistant position from the upper vertex.
Since components other than the temporary locking member 150 are the same as those in the embodiment shown in FIGS. 1 to 10, the same reference numerals are used in the drawings, and redundant description and illustration are omitted.

  In the present invention, three or more of the temporary fixing locking members 150 described above may be provided in the flange portion 12 of the ferrule joint 1. However, in this case, in order to be able to engage with the flange portion 12 ′ of the mating ferrule joint 2 ′ to be connected, the temporary fixing locking members 150, 150. It is necessary to arrange in a half area (a semi-arc-shaped area).

  Further, in the illustrated example, the formation of the straight pipe is described with the ferrule joints 1 and 2 'to be connected having the same shape and the same size. However, the present invention is applicable to ferrule joints of various branch structures such as three-way or four-way types while maintaining the structure of one ferrule joint to be connected to the other ferrule joint. It is possible to cope with the formation of an arbitrary pipe.

  The embodiments of the present invention have been described with reference to the drawings. However, the present invention is not limited to these illustrated examples, and is within the scope of the technical idea described in each claim of the claims. Needless to say, various modifications are possible.

DESCRIPTION OF SYMBOLS 1,100: Ferrule coupling 2 ': The other party ferrule coupling connected 3: Sanitary piping 4': Sanitary piping 10, 110, 10 ': One end opening (opening)
11, 111, 11 ′: Opening at the other end (opening)
12, 112, 12 ': Flange part 13, 113, 13': Sealing surface 14, 114, 14 ': Slope for locking 15, 15': Recess 16, 16 ': Joint body 17: Step part (for O-ring) )
18 ': Groove (for O-ring)
19 ': Convex wall (for O-ring)
20: Flat packing (seal member)
21: Projection 22: O-ring (seal member)
23: Storage space 30: Clamp band (clamp member)
40: Clearance 50, 150: Temporary fixing locking member 51, 151: Locking claw 53: Inclined engagement surface

Claims (6)

A ferrule joint (1) disposed at an end of the sanitary pipe for detachably connecting the sanitary pipes with a clamp member,
A tubular joint body (16) having openings (10, 11) at both ends;
A flange portion (12) formed on the outer periphery of one end portion of the joint body (16) and being abutted and clamped to the mating ferrule joint through a seal member at the time of connection;
At least one temporary locking member (50) that engages with the mating ferrule joint for temporary fixing when connecting,
The temporary fixing locking member (50) has a trapezoidal recess that is fixed to the flange portion (12) at the proximal end and extends outward at the distal end and engages with the mating ferrule joint. , Provided with a locking claw (51) formed so as not to interfere with the clamp member during clamping,
The ferrule joint (1), wherein the recess is supported by the mating ferrule joint to temporarily hold a state where the mating joint is engaged with the mating ferrule joint at the time of connection. . The flange portion (12) has a seal surface (13) that receives and seals the seal member (20) when connected,
The seal surface (13) has a recess (15) that fits into the protrusion (21) of the seal member (20),
The ferrule joint (1) according to claim 1, wherein the flange portion (12) is formed so that the seal member (20) is fitted when temporarily fixed.   A sanitary pipe with joint, wherein the ferrule joint (1) according to claim 1 or 2 is disposed at at least one end of the sanitary pipe. Seal one ferrule joint (1) disposed at the end of one sanitary pipe (3) and another ferrule joint (2 ') disposed at the end of another sanitary pipe (4') It is a connection structure of a ferrule joint that is closely connected via a member (20) and clamped by a clamp member (30) and is detachably connected,
One or both of the one ferrule fitting (1) or the other ferrule fitting (2) is Ri ferrule fittings der according to claim 1 or 2,
The recess engages with the mating ferrule joint,
The connection structure of a ferrule joint, wherein the locking member and the clamp member are clamped by the clamp member without interfering with each other . Seal one ferrule joint (1) disposed at the end of one sanitary pipe (3) and another ferrule joint (2 ') disposed at the end of another sanitary pipe (4') A ferrule joint connection method for tightly connecting via a member (20) and clamping by a clamp member (30) to be detachably connected,
One or both of the one ferrule fitting (1) or the other ferrule fitting (2) is Ri ferrule fittings der according to claim 1 or 2,
The one ferrule joint (1) and the other ferrule joint (2 ′) are abutted via the seal member (20), and the temporary fixing locking member (50) is joined to the other ferrule joint (2 ′). ) To temporarily hold the joint so as to be supported by the mating ferrule joint in order to temporarily hold the jointed state.
Clamping both flanges (12, 12 ') of both the temporarily fixed ferrule joints (1, 2') with a clamp member (30) at a position not interfering with the locking member ;
A method for connecting a ferrule joint, comprising: The one ferrule joint (1) and the other ferrule joint (2 ′) are directly or directly attached to the sealing surfaces (13, 13 ′) which are abutted via the sealing members (20, 22). Formed to fit indirectly through,
6. The connection method according to claim 5, wherein the step of temporarily fixing further includes temporarily fixing both joints (1, 2 ') so that the joints are directly or indirectly fitted together.

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