KR20000031093A - Coupling for connecting nonferrous metal pipes - Google Patents

Abstract

PURPOSE: A coupling for connecting nonferrous metal pipes is provided to easily assemble the coupling by connecting with bolts and nuts and to connect nonferrous metal pipes such as copper, stainless and the like. CONSTITUTION: A coupling for connecting nonferrous metal pipes is used by: inserting a coupling part of both nonferrous metal pipes(1,1a) into both insides of a packing(12) inserted to be slightly protruded into both insertion grooves on the inner circumference of a socket(10); inserting nonferrous metal or synthetic resin couplings(20,20a) into the inside of protruded rings(2,2a) by forming the protruded rings on the outer diameter of the coupling part; hanging a lower curved surface(31) to the protruded rings by inserting the nonferrous metal couplings into the outside of the protruded rings; inserting upper and lower connecting ends(21,21a) through a path(15) between both protrusions(13,13a) on both front ends of the socket; and connecting penetrating holes(22,22a) of the upper and lower connecting ends with penetrating holes(14,14a) of both protrusions with bolts and nuts after equalizing the penetrating holes each other.

Description

Joints for nonferrous metal pipe joints

The present invention relates to a joint coupling of a nonferrous metal tube interconnecting a nonferrous metal tube such as copper or stainless steel.

In general, when the non-ferrous metal pipe is connected with a cast iron coupling, the pipe is corroded due to the connection between heterogeneous materials, so the coupling is made of bronze or brass to prevent this, and the cost of the product was expensive. Since only the upper and lower couplings separated into semi-circular upper and lower parts are assembled as bolts and nuts, it is difficult to assemble due to horizontal accuracy of both pipes during assembly, and it takes a lot of work time. There was a flaw.

In the present invention, in order to solve such defects, the entire cylindrical socket of cast iron is coated with an insulating material so that the joint portions of both pipes of the nonferrous metal are inserted into both sides of the packing slightly protruded into both of the inner circumferential grooves of the socket in the middle of the socket. Form a wheel wheel on the outer diameter of the joint where the stages are in contact with each other, and insert the non-ferrous metal or synthetic resin connection ring inward toward the wheel to insert the lower curved surface in contact with the wheel, and bind the non-ferrous metal on the outward direction. A lead passage between the two protruding ends formed by inserting the ring so that the lower curved surface is in contact with the wheel wheels, and the upper and lower fastening ends of the binding ring are symmetrically up and down on the distal ends of the sockets with the inner edge of the distal end. Insert through and match the through hole of upper and lower fastening ends with the through hole of both protrusions and fasten it as a bolt or nut. If it described in detail based on the drawings that the number of easy to assemble as follows.

1 is an exploded perspective view showing the assembled state of the present invention

2 is a longitudinal sectional view of the assembled state;

3 is a side view of the assembled state;

Figure 4a is a partial cross-sectional view showing a structure in which a non-ferrous metal layer laminated on the inner circumference of the cast iron binding ring

Figure 4b is a partial cross-sectional view showing a structure in which the connection ring is formed into the same body as the socket at the inner end of the recess end of the inner periphery of both ends of the socket;

Figure 5a, b is a plan view of the socket shape formed in a or ㅓ shape

Explanation of symbols for important parts of the drawings

1, 1a: pipe 2, 2a: wheel wheel 10: socket

10a: Inner periphery 11: Insertion groove 12: Packing

13,13a: Both sides exit 14,14a: Through hole 15: Withdrawal passage

20, 20a: binding ring 21, 21a: upper and lower fastening

22, 22a: through hole 23, 23a: lower curved surface 24, 24a: non-ferrous metal layer

30: connection ring 31: lower curved surface

Both inner parts of the packing 12 in which the joint portions of both the nonferrous metal pipes 1 and 1a to be connected are slightly projected into the inner peripheral both insertion grooves 11 of the middle portion of the socket 10 insulated and coated on the cast iron material. The wheels 2 and 2a are formed at the outer diameters of the joint portions at the ends where the two ends abut each other, thereby inserting the nonferrous metal or synthetic resin connecting ring 30 inwardly of the wheels, thereby lowering the curved surface 31. ) Is inserted into contact with the wheel, and the non-ferrous metal binding rings (20) and (20a) are inserted into the outward side of the wheel, so that the lower curved surfaces (23) and (23a) are in contact with the wheel. Drawout passages 15 between the two protruding ends 13 and 13a, which are formed so that the inner edges of the ends 21 and 21a are symmetrical with each other up and down at the distal end portions of the sockets of the inlet end 10a. When inserting through the upper and lower fastening ends, the through holes 22 and 22a coincide with the through holes 14 and 14a of both protruding ends. As such, the connection ring 30 of the individual body having the lower curved surface 31 may be formed into the same body as the socket at the inner end of the recess 10a of the inner periphery of both ends of the socket, or the coupling ring may be used to reduce the unit cost. 20), (20a) is formed of cast iron material and the non-ferrous metal layers 24, 24a are laminated on the entire inner circumference of the lower curved surfaces 23, 23a of the binding ring in contact with the non-ferrous metal pipe. It is possible to prevent contact between them.

And the pipe shape can be used as a type pipe joint type by forming the socket shape as a type, and the socket shape can be used as a type pipe fitting type by forming the socket shape as a type of pipe type.

In the present invention having such a structure, when connecting non-ferrous metal pipes such as copper or stainless steel, the entire cast iron socket is coated with an insulating material to prevent direct contact with the socket which is cast iron, and the joints of both pipes are inserted into the socket. The packing 12 fitted in both inner circumferential grooves 11 of the intermediate part slightly protrudes, and the joint part is sealed by contacting the packing slightly protruding from the inner circumference at the inner side of the socket, and is connected to the nonferrous metal or synthetic resin at the outer side of the socket. Since the outer circumferential surface of the non-ferrous metal pipe is connected to the inner circumferential surface of the insulated coated socket without being in contact with the ring 30, a certain gap is formed so that the contact between heterogeneous substances can be prevented twice, and the non-ferrous metal pipe is fixed at both ends of the socket Since the binding rings 20 and 20a are also made of non-ferrous metals, corrosion of pipes due to foreign substances can be prevented. When assembling, insert the non-ferrous metal or synthetic resin connecting ring 30 on the inner side of the wheel formed on the outer diameter of the joint of both pipes to be connected, and insert the lower curved surface 31 so as to contact the wheel. The non-ferrous metal binding rings 20 and 20a are inserted into the lower curved surfaces 23 and 23a so as to be in contact with the wheel wheels, and the upper and lower fastening ends 21 and 21a of the binding ring are in the inner periphery. The through hole of the upper and lower fastening ends is inserted through the withdrawal passages 15 between the two protruding ends 13 and 13a which are formed to be symmetrical with each other in the up and down ends of the sockets of the recess 10a. (22) and (22a) and the through holes (14) and (14a) of both protruding ends coincide with bolts and nuts to easily maintain the connection state.

Claims (5)

Both inner parts of the packing 12 in which the joint portions of both the nonferrous metal pipes 1 and 1a to be connected are slightly projected into the inner peripheral both insertion grooves 11 of the middle portion of the socket 10 insulated and coated on the cast iron material. The wheels 2 and 2a are formed in the outer diameter of the joint portion at the position where both ends contact each other so that the lower curved surface 31 is inserted by inserting the nonferrous metal or synthetic resin connecting ring 30 inwardly of the wheel. ) Is inserted into contact with the wheel, and the non-ferrous metal binding rings (20) and (20a) are inserted outwardly of the wheel, so that the lower curved surfaces (23) and (23a) are in contact with the wheel. Drawout passages 15 between the two protruding ends 13 and 13a, which are formed so that the inner edges of the ends 21 and 21a are symmetrical with each other up and down at the distal end portions of the sockets of the inlet end 10a. Insert through the upper and lower fastening ends 22, 22a and the two ends of the through holes (14, 14a) to match the bolts and nuts Couplings for non-ferrous metal pipes Non-ferrous metal according to claim 1, wherein the binding rings (20) and (20a) are formed of cast iron, and the nonferrous metal layers (24) and (24a) are laminated on the entire inner circumference where the lower curved surfaces (23) and (23a) are formed. Couplings for joints of pipes. The joint coupling for a non-ferrous metal tube according to claim 1, wherein the connecting ring (30) having the lower curved surface (31) is formed to be identical to the socket at the inner end of the recessed end (10a) of the inner end of the socket. The joint coupling for a nonferrous metal tube according to claim 1, wherein the socket (10) has a shape of an a-shape. The joint coupling for a nonferrous metal tube according to claim 1, wherein the socket (10) has a shape of a fin.