CN211398906U - A multi-purpose bellows joint - Google Patents

Abstract

The utility model relates to the field of pipeline connection, and specifically discloses a multi-purpose corrugated pipe joint, which comprises a corrugated pipe joint main body, a joint pipe body is arranged in the middle of the corrugated pipe joint main body, and a joint pipe body is installed between the nut and the joint pipe body. There is a sealing washer, the other side of the joint pipe body is provided with a locking piece, and one side of the two mounting screw holes is provided with a compression screw. The transfer tube can play the role of positioning. When the two bellows are connected to each other, rotate the compression screw to make the fixing rod press down the compression gasket to compress the two bellows, so as to avoid gaps at the connection. Pull waste, the notch of the corrugated groove and the outer corrugation of the corrugated ring fit, so the compression gasket and the corrugated ring will be installed and fitted during the pressing process of the compression gasket, so as to ensure the tightness of the corrugated ring. And the sealing washer acts as a buffer when the nut is pressed, so as to prevent the nut from deteriorating or the bellows from being pressed and deformed.

Description

A multi-purpose bellows joint

technical field

The utility model relates to the field of pipeline connection, in particular to a multi-purpose corrugated pipe joint.

Background technique

Due to its ductility and good heat dissipation performance, bellows are widely used in instrumentation, heating and other industries to convert pressure into displacement or force; bellows have thinner walls and higher sensitivity, and the internal pressure during operation is high. Under the action of the pipe, it elongates along the length of the pipe, causing the movable end to generate a displacement that has a certain relationship with the pressure.

The Chinese patent discloses a multi-purpose corrugated pipe joint (authorized announcement number CN 206816995U). The patented technology can save the pipeline consumption when the corrugated pipe is connected and play a cost-saving role. However, it cannot guarantee that the corrugated pipe is tightly connected and does not produce phenomenon of leakage. Therefore, those skilled in the art provide a multi-purpose corrugated pipe joint to solve the problems raised in the above background art.

Utility model content

The purpose of the present invention is to provide a multi-purpose corrugated pipe joint to solve the problems raised in the above background technology.

To achieve the above object, the utility model provides the following technical solutions:

A multi-purpose bellows joint includes a bellows joint main body, a joint pipe body is arranged in the middle of the bellows joint main body, a nut is arranged on one side of the joint pipe body, and the nut and the joint pipe body are arranged. A sealing washer is installed between the joints, a locking piece is arranged on the other side of the joint pipe body, a clamping claw is installed between the locking piece and the joint pipe body, and a joint is arranged between the clamping claw and the joint pipe body The pipe body tooth ring, one side of the locking piece is installed with a tightening nut, the upper and lower ends of the joint pipe body are installed with two installation screw holes, and one side of the two installation screw holes is provided with a pressure Tighten the screw.

As a further solution of the present invention, an adapter pipe is arranged on the inner side of the joint pipe body, a fixing rod is installed on the outer side of the adapter pipe, and a fixing rod is arranged on the outer side of the adapter pipe.

As a further solution of the present invention: the lower end of the compression screw is provided with a compression gasket, a compression rod is installed between the compression gasket and the compression screw, and a corrugated groove is installed at the lower end of the compression rod , the outer side of the pressing washer is sleeved with a return spring.

As a further scheme of the present utility model: the compression washer and the compression rod are made of stainless steel, and the compression washer is fixedly connected to the return spring, the corrugated groove is fixedly connected to the compression washer, and the return spring The lower end is arc-shaped.

As a further solution of the present invention, the corrugated pipe is sleeved with the transfer pipe, the inner diameter of the transfer pipe is slightly larger than the outer diameter of the corrugated pipe, and the transfer pipe is fixedly connected with the fixing rod.

As a further solution of the present invention, the compression screw is rotatably connected with the installation screw hole, the inner diameter of the sealing washer is slightly smaller than the outer diameter of the joint body, and the sealing washer is a rubber material member.

As a further solution of the present invention: the main body of the bellows joint is made of stainless steel, the tightening nut and the locking piece are rotatably connected with the clamping claw, the clamping claw is rotatably connected with the joint body, and the screw The cap is rotatably connected to the joint body.

Compared with the prior art, the beneficial effects of the present utility model are:

1. The preferred transfer pipe, the setting of the transfer pipe can make the two corrugated pipes sleeved on the transfer pipe when connecting, which can play the role of positioning and limiting. Due to the thin wall thickness of the corrugated pipe, the traditional direct docking It will cause the bellows to be offset, so that when the adapter is fixed, there is a gap inside, which will cause leakage, and leakage will cause danger when transferring more dangerous liquids. The screw makes the fixing rod press down the compression gasket to compress the two bellows, so as to avoid the gap at the connection which leads to waste of pulling. During the pressing process, the compression gasket and the corrugated ring will fit together, so as to ensure the tightness of the transfer of the corrugated ring.

2. The preferred locking plate and sealing washer, the traditional bellows adapter is only pressed by the external tightening nut, so that the adapter and the bellows are in a compressed state, and the gap between them cannot be guaranteed to be tight, when the tightening nut is used. The larger the force, the threaded pipe will be compressed and deformed or the tooth pattern will be loosened, resulting in scrap, waste of cost, and inability to play a good sealing function.

Description of drawings

Fig. 1 is the structural representation of a kind of multi-purpose bellows joint;

2 is a schematic diagram of the internal structure of a bellows joint in a multi-purpose bellows joint;

Figure 3 is a side view of the joint body of a multi-purpose corrugated pipe joint.

In the figure: 1. main body of bellows joint; 2. joint body; 3. nut; 4. clamping claw; 5. locking piece; 6. tooth ring; 7. tightening nut; 8. mounting screw hole; 9. Compression screw; 10. Seal washer; 201, Adapter pipe; 202, bellows; 203, fixed rod; 901, compression washer; 902, return spring; 903, pressure rod; 904, corrugated groove.

Detailed ways

Referring to FIGS. 1 to 3 , in an embodiment of the present invention, a multi-purpose bellows joint includes a bellows joint main body 1 , a joint pipe body 2 is arranged in the middle of the bellows joint main body 1 , and one side of the joint pipe body 2 is provided. A nut 3 is provided, a sealing washer 10 is installed between the nut 3 and the joint pipe body 2, a locking piece 5 is arranged on the other side of the joint pipe body 2, and a clamping piece is installed between the locking piece 5 and the joint pipe body 2. Claw 4, between the clamping claw 4 and the joint pipe body 2, there is a joint pipe body tooth ring 6, one side of the locking piece 5 is installed with a tightening nut 7, and the upper and lower ends of the joint pipe body 2 are installed with two installations The screw holes 8, one side of the two mounting screw holes 8 is provided with a pressing screw 9.

The inner side of the joint body 2 is provided with an adapter pipe 201, the outer side of the adapter pipe 201 is provided with a fixing rod 203, and the outer side of the adapter pipe 201 is provided with a fixing rod 203, and the lower end of the compression screw 9 is provided with a compression washer 901 to press A compression rod 903 is installed between the compression washer 901 and the compression screw 9, a corrugated groove 904 is installed at the lower end of the compression rod 903, a return spring 902 is sleeved on the outer side of the compression washer 901, and the compression washer 901 and the compression rod 903 is a stainless steel member, and the pressing washer 901 is fixedly connected with the return spring 902 , the corrugated groove 904 is fixedly connected with the pressing washer 901 , and the lower end of the return spring 902 is arc-shaped.

The bellows 202 is sleeved with the adapter pipe 201, and the inner diameter of the adapter pipe 201 is slightly larger than the outer diameter of the bellows 202. The adapter pipe 201 is fixedly connected with the fixing rod 203, the compression screw 9 is rotatably connected with the installation screw hole 8, and the sealing gasket The length of the inner diameter of 10 is slightly less than the length of the outer diameter of the joint body 2, and the sealing washer 10 is a rubber material component, the bellows joint body 1 is a stainless steel material component, the tightening nut 7, the locking piece 5 and the clamping claw 4 are rotatably connected, The clamping claw 4 is rotatably connected with the joint pipe body 2 , and the nut 3 is rotatably connected with the joint pipe body 2 .

In Figures 2 and 3: the transfer tube 201 can play the role of positioning and limiting. Due to the thin wall thickness of the bellows 202, the traditional direct docking will offset the docking, and the return spring 902 can also play a certain buffering role. , using the pressure rod 903 to compress the compression gasket 901 to compress the connection of the two bellows 202 .

The working principle of the present invention is as follows: when the two corrugated pipes 202 need to be connected to the main body 1 of the corrugated pipe joint, the two corrugated pipes 202 are sleeved on the transfer pipe 201, and the transfer pipe 201 can play the role of positioning and limiting, Because the wall thickness of the bellows 202 is relatively thin, the traditional direct butt joint will cause the bellows 202 to be offset, so that when the adapter is fixed, there is a gap inside, which will cause leakage. Dangerous, the adapter pipe 201 is fixed on the middle of the inner side wall of the joint pipe body 2 by the fixing rod 203. When the positions of the two bellows 202 are determined, the pressing screw 9 is rotated to make the pressing rod 903 press down, thereby driving the pressing washer 901. Pressurize the joints between the two bellows 202 and the adapter pipe 201, and the tooth grooves of the corrugated grooves 904 on the compression gasket 901 fit with the outer tooth grooves of the bellows 202, so that during the pressing process of the compression gasket 901 It can ensure that the gap at the connection of the bellows 202 is sealed, and the transfer tightness of the bellows joint main body 1 can be ensured. When it needs to be disassembled, loosen the compression screw 9, and the reset spring 902 will reset the compression rod 903 to avoid prolonged compression. The corrugated groove 904 is adhered to the corrugated tube 202, and the return spring 902 can also play a certain buffering role. After the bellows 202 is transferred, the clamping claw 4 and the tooth ring 6 are used to rotate and connect, and then the locking piece 5 is inserted. After the tightening nut 7 is installed, the rotation of the tightening nut 7 can force the clamping claw 4 to compress the bellows 202, adjust the pressure, the sealing washer 10 is sleeved with the joint body 2, and then the nut 3 is turned. On the joint body 2, the sealing washer 10 is made of rubber, which has good sealing elasticity and can play the role of auxiliary sealing and buffering. The traditional bellows adapter is only pressed by the external tightening nut 7, The adapter and the bellows 202 are in a compressed state, and the gap between them cannot be guaranteed to be tight. When the force of the tightening of the nut 7 is large, the bellows 202 will be compressed and deformed or the tooth pattern will be loosened, resulting in scrap and waste of costs. , can not play a good sealing function.

The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. The technical solution of the utility model and its utility model concept are equivalently replaced or changed, and should be covered within the protection scope of the present utility model.

Claims (7)

1. A multi-purpose bellows joint, comprising a bellows joint main body (1), characterized in that a joint pipe body (2) is provided in the middle of the bellows joint main body (1), the joint pipe body (2) ) is provided with a nut (3) on one side, a sealing gasket (10) is installed between the nut (3) and the joint pipe body (2), and the other side of the joint pipe body (2) is provided with a A locking piece (5), a clamping claw (4) is installed between the locking piece (5) and the joint pipe body (2), and a clamping claw (4) and the joint pipe body (2) are arranged between the clamping claw (4) and the joint pipe body (2). The joint pipe body tooth ring (6), a tightening nut (7) is installed on one side of the locking piece (5), and two installation screw holes (8) are installed on the upper and lower ends of the joint pipe body (2). ), a pressing screw (9) is provided on one side of the two mounting screw holes (8). 2 . The multi-purpose corrugated pipe joint according to claim 1 , wherein an adapter pipe ( 201 ) is installed on the inner side of the joint pipe body ( 2 ), and an adapter pipe ( 201 ) is installed on the outside of the adapter pipe ( 201 ). 3 . A fixing rod (203) is provided, and a fixing rod (203) is arranged on the outer side of the adapter pipe (201). 3. The multi-purpose bellows joint according to claim 1, characterized in that a compression washer (901) is provided at the lower end of the compression screw (9), and the compression washer (901) A compression rod (903) is installed between the compression rod (9), the lower end of the compression rod (903) is installed with a corrugated groove (904), and the outer side of the compression washer (901) is sleeved with a return spring (902). 4. A multi-purpose bellows joint according to claim 3, characterized in that, the compression washer (901) and the compression rod (903) are stainless steel components, and the compression washer (901) and the compression rod (903) are made of stainless steel. The return spring (902) is fixedly connected, the corrugated groove (904) is fixedly connected with the pressing washer (901), and the lower end of the return spring (902) is arc-shaped. 5. The multi-purpose corrugated pipe joint according to claim 2, wherein the corrugated pipe (202) is sleeved with the adapter pipe (201), and the inner diameter of the adapter pipe (201) is slightly longer than the corrugated pipe (202) The length of the outer diameter, and the adapter tube (201) is fixedly connected with the fixing rod (203). 6. The multi-purpose bellows joint according to claim 1, wherein the compression screw (9) is rotatably connected with the mounting screw hole (8), and the inner diameter of the sealing washer (10) is slightly longer in length. It is smaller than the outer diameter length of the joint pipe body (2), and the sealing gasket (10) is a rubber material member. 7. A multi-purpose bellows joint according to claim 1, characterized in that, the bellows joint body (1) is a stainless steel member, and the tightening nut (7), the locking piece (5) and the The clamping claw (4) is rotatably connected, the clamping claw (4) is rotatably connected with the joint pipe body (2), and the nut (3) is rotatably connected with the joint pipe body (2).

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