CN205065088U - Thin wall stainless steel pipeline connecting piece - Google Patents

Abstract

The utility model discloses a thin-walled stainless steel pipeline connector, which includes a connecting pipe, an adhesive layer and a connected pipe, and is characterized in that the inner wall of the connecting pipe is coated with an adhesive layer, and the connected pipe is inserted into the connecting pipe. In the pipe fittings, the overlapping part of the connecting pipe fitting and the connected pipe is pressed and molded to form a pressing section through a pressing mold, so that the inner wall of the connecting pipe fitting is closely bonded to the outer wall of the connected pipe through the adhesive layer, and the pressing section is pressed A number of circular arc grooves are dislocated along the circumferential direction and arranged at intervals along the axial direction. The thin-walled stainless steel pipe connector described in the utility model has good circumferential rotation resistance, good sealing performance, high connection strength, simple construction, convenient operation, greatly saving pipe material costs and installation man-hours, and is suitable for water supply systems and gas systems. The connection of thin-walled stainless steel pipes.

Description

A thin-walled stainless steel pipe connector

technical field

The utility model relates to pipeline connections, in particular to a thin-walled stainless steel pipeline connection piece.

Background technique

At present, there are the following connection methods between the existing stainless steel thin-walled pipes: in some cases, the connection between the connecting piece and the stainless steel thin-walled pipes is welded. This welding connection method is troublesome in construction, and electricity must be used on site. The high temperature of the welding part is prone to chromium deficiency, and solid solution treatment cannot be carried out on site, which makes the welding part easy to rust, and the cost of this welding connection method is relatively high. In addition, a sealing ring is set in the connecting piece and the plastic deformation of the connecting piece and the mouth of the pipe is completed by extrusion to complete the connection between the connecting piece and the stainless steel thin-walled pipe, but this way the sealing ring is easy to age and appear The condition of the leak. The existing connection technology of pressing and bonding method is to apply anaerobic adhesive between the joints of the two connecting pipes and then cause the plastic deformation of the connecting pipes by pressing to finally complete the connection. The airtightness of this method is Good, good pull-out resistance, but the corrugated or threaded structure used in the traditional compression, the two connecting pipes are prone to circumferential rotation, resulting in seal failure and leakage problems, double compression type six-sided extrusion There will be voids during molding, and it is also prone to leakage problems.

Utility model content

The technical problem to be solved and the technical task proposed by the utility model are to improve the existing technology and provide a thin-walled stainless steel pipe connector, which solves the problem that the pipe connection in the current technology has poor resistance to circumferential rotation and is prone to leakage due to seal failure. question.

For solving the above technical problems, the technical solution of the utility model is:

A thin-walled stainless steel pipe connector, comprising a connecting pipe, an adhesive layer and a connected pipe, characterized in that the inner wall of the connecting pipe is coated with an adhesive layer, and the connected pipe is inserted into the connecting pipe, through The pressing mold compresses and molds the overlapping part of the connecting pipe fitting and the connected pipe to form a pressing section, so that the inner wall of the connecting pipe fitting is closely bonded to the outer wall of the connected pipe through the adhesive layer, and the pressing section is pressed out along the circumferential direction. A number of arc grooves are misplaced and arranged at intervals along the axial direction. The utility model uses a pressing mold to press the connecting end of the connecting pipe, so that the outer circle of the connecting end of the connecting pipe is plastically deformed and riveted together with the connected pipe. The adhesive layer not only plays the role of bonding but also plays the role of sealing to ensure the good sealing of the pipe connection and achieve long-term no leakage. At the same time, the utility model adopts the structure of circular arc grooves dislocated in the circumferential direction and arranged at intervals in the axial direction in the pressing section, which can effectively prevent the circumferential rotation of the connecting pipe fittings and the connected pipes, avoid the damage of the adhesive layer, and improve the Sealing to avoid leakage.

Further, the arc grooves are semicircular, and the semicircular arc grooves are arranged at intervals along the axial direction, and two adjacent semicircular arc grooves are misaligned by 180° in the circumferential direction, preventing The tightness of the connection is guaranteed while rotating, the mold of the semicircular arc groove is easy to process, and it is convenient and simple to use.

Further, the inner diameter of the connecting pipe fitting is 0.2 mm to 1.0 mm larger than the outer diameter of the pipe to be connected, so as to ensure that the connecting pipe and the pipe to be connected can be effectively bonded through plastic deformation to ensure airtightness.

Further, the two ends or one end of the pressing section are pressed with an anti-off section, which greatly increases the structural strength of the pipe connection and improves the pull-out resistance of the pipe connection. The anti-off section is polygonal or ring-shaped to further prevent The pipe rotates circumferentially.

Further, the adhesive layer adopts anaerobic adhesive, and the adhesive layer solidifies quickly in the absence of oxygen in the pressed pipe connector, and plays the role of sealing and bonding, thereby completing the connection to the pipe fittings.

Further, the connecting pipe fitting is a straight-through connecting pipe fitting, or an elbow-shaped connecting pipe fitting, or a tee-shaped connecting pipe fitting.

Compared with the prior art, the utility model has the advantages of:

The thin-walled stainless steel pipe connector described in the utility model has good circumferential rotation resistance, good sealing performance, high connection strength, simple construction, convenient operation, greatly saving pipe material costs and installation man-hours, and is suitable for water supply systems and gas systems. The connection of thin-walled stainless steel pipes; the utility model has the advantages of simple structure, easy realization and high economic benefit.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The thin-walled stainless steel pipeline connector disclosed by the embodiment of the utility model improves the circumferential rotation resistance of the pipeline connection, ensures good sealing performance of the pipeline connection, and is simple in construction and convenient in operation.

As shown in Figure 1, a thin-walled stainless steel pipe connector includes a connecting pipe 1, an adhesive layer 2 and a connected pipe 3, the inner wall of the connecting pipe 1 is coated with an adhesive layer 2, the adhesive layer 2 Using an anaerobic adhesive, the connected pipe 3 is inserted into the connecting pipe 1, and the overlapping part of the connecting pipe 1 and the connected pipe 3 is pressed and molded to form a pressing section 4 through a compression mold, so that the inner wall of the connecting pipe 1 passes through the adhesive layer 2 is closely bonded to the outer wall of the connected pipe material 3, and a number of circular arc grooves 5 that are misaligned in the circumferential direction and arranged at intervals in the axial direction are clamped on the pressing section 4. In this embodiment, the circular arc grooves 5 adopt Semi-circular, the crimping mold is easy to manufacture, and can ensure the connection strength and sealing performance after crimping. The semi-circular arc grooves 5 are arranged at intervals along the axial direction, and two adjacent semi-circular arc grooves 5 are in the Misaligned by 180° in the circumferential direction.

The inner diameter of the connecting pipe fitting 1 is 0.2mm~1.0mm larger than the outer diameter of the connected pipe 3, the nominal diameter of the pressing section 4 is 10mm~160mm, and the depth of the arc groove 5 is 0.3mm~4mm, according to the actual diameter of the pipe Select the appropriate pitch and arc groove depth to make the connecting pipe fittings and the connected pipe riveted tightly, and there will be no gap after pressing.

Both ends or one end of the pressing section 4 are pressed with an anti-off section 6 to improve the pull-out resistance. The anti-off section 6 is polygonal or ring-shaped to further prevent circumferential rotation. The connecting pipe fitting 1 is a straight-through connecting pipe fitting, or a curved Head-shaped connecting pipe fittings, or tee-shaped connecting pipe fittings.

The above are only preferred implementations of the present utility model. It should be pointed out that the above-mentioned preferred implementations should not be regarded as limitations on the present utility model, and the protection scope of the present utility model should be based on the scope defined by the claims. For those skilled in the art, without departing from the spirit and scope of the utility model, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims (5)

1. A thin-walled stainless steel pipe connector, comprising a connecting pipe (1), an adhesive layer (2) and a connected pipe (3), characterized in that the inner wall of the connecting pipe (1) is coated with The adhesive layer (2), the connected pipe (3) is inserted into the connecting pipe (1), and the overlapped part of the connecting pipe (1) and the connected pipe (3) is pressed and molded through a compression mold to form a compression section (4 ), so that the inner wall of the connecting pipe (1) is tightly bonded to the outer wall of the connected pipe (3) through the adhesive layer (2), and the press-fit section (4) is pressed out of the dislocation along the circumferential direction and the axial distance Several arc grooves (5) are arranged, and the arc grooves (5) are semicircular, and the semicircular arc grooves (5) are arranged at intervals along the axial direction, and the adjacent two semicircular arcs The slots (5) are offset by 180° in the circumferential direction. 2. A thin-walled stainless steel pipe connector according to claim 1, characterized in that the inner diameter of the connecting pipe (1) is 0.2 mm to 1.0 mm larger than the outer diameter of the connected pipe (3). 3. A thin-walled stainless steel pipe connector according to claim 1, characterized in that, the two ends or one end of the pressing section (4) are pressed with an anti-off section (6), and the anti-off section (6) be polygonal or circular. 4. A thin-walled stainless steel pipe connector according to claim 1, characterized in that the adhesive layer (2) is an anaerobic adhesive. 5. A thin-walled stainless steel pipe connector according to claim 1, characterized in that the connecting pipe (1) is a straight-through connecting pipe, or an elbow-shaped connecting pipe, or a tee-shaped connecting pipe.