Multi-seal structure of stainless steel clamp-type pipe fitting

Abstract

The utility model discloses a stainless steel clamps and presses formula pipe fitting's multiple sealing structure, including sleeve mechanism and inner tube mechanism, the sleeve mechanism includes pipe fitting, sets up the convex ring of pipe fitting both sides, the sealing ring of sleeve connection in the convex ring inside, install the internal thread ring on the inner wall of pipe fitting near middle part, set up small sealing ring in the internal thread ring middle part, the inner tube mechanism includes the tubular product of inserting to the inside of pipe fitting, the outer thread ring of assembly in tubular product inner end outside, the outer thread ring is connected with internal thread ring screw thread, in the utility model, through the connection of outer thread ring and internal thread ring realizes the fixation of tubular product position, and because the end of outer thread ring is closed state, makes the screw thread connection of outer thread ring and internal thread ring to exist end, therefore when tubular product can not rotate, namely the position positioning of tubular product is completed, the sealing ring and the recess correspond to each other at this time, at this time, through hydraulic clamp and carry out the pressing can realize multistage sealing, improved the practicality of device.

Description

Technical Field

[0001] This utility model relates to the field of press-fit pipe fittings technology, specifically to a multi-seal structure for stainless steel press-fit pipe fittings. Background Technology

[0002] Press-fit pipe fittings are industrial components that connect pipes by pressing the sealing groove of the socket with a special tool. However, existing press-fit pipe fittings only press the sealing ring to achieve a seal. During the connection process, the fitting depth needs to be manually calibrated, which is very troublesome and prone to error. Therefore, a multi-seal structure for stainless steel press-fit pipe fittings is proposed. Utility Model Content

[0003] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the technical solution adopted by this utility model is as follows: The stainless steel press-fit pipe fitting has a multi-seal structure, including a sleeve mechanism and an inner tube mechanism. The sleeve mechanism includes a pipe fitting, convex rings on both sides of the pipe fitting, a sealing ring fitted inside the convex rings, an internal threaded ring installed on the inner wall of the pipe fitting near the middle, and a small sealing ring located in the middle of the internal threaded ring. The inner tube mechanism includes a pipe inserted into the pipe fitting and an external threaded ring assembled on the outer side of the inner end of the pipe. The external threaded ring is threadedly connected to the internal threaded ring.

[0005] Preferably, there are two sets of convex rings, and each set of convex rings has three extrusion zones pressed on its side.

[0006] Preferably, the number of sealing rings is two sets that match the number of convex rings, and a convex ring is provided in the middle of the inner side of the sealing ring.

[0007] Preferably, the internal threaded ring has two threads, and the thread ends on the external threaded ring are closed.

[0008] Preferably, a groove is provided on the outer side of the pipe corresponding to the position of the sealing ring.

[0009] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows: In this invention, the pipe position is fixed by connecting the external threaded ring and the internal threaded ring. Since the end of the external threaded ring is closed, the threaded connection between the external threaded ring and the internal threaded ring has an end. Therefore, when the pipe cannot be rotated, it means that the pipe position is complete. At this time, the sealing ring and the groove correspond to each other. Multi-level sealing can be achieved by pressing with hydraulic clamps, which improves the practicality of the device. Attached Figure Description

[0010] Figure 1This is a cross-sectional schematic diagram of one embodiment of the present utility model; Figure 2 This is a schematic diagram of an unconnected structure according to an embodiment of the present invention.

[0011] Figure label: 110. Pipe fitting; 120. Convex ring; 130. Sealing ring; 140. Threaded ring; 150. Small sealing ring; 160. Extrusion zone; 210. Pipe; 220. Threaded ring. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0013] The following describes, with reference to the accompanying drawings, a multi-seal structure for stainless steel press-fit pipe fittings provided by some embodiments of this utility model.

[0014] Example: Combination Figure 1-2 As shown, the multi-seal structure of the stainless steel press-fit pipe fitting provided by this utility model includes a sleeve mechanism and an inner tube mechanism. The sleeve mechanism includes a pipe fitting 110, convex rings 120 disposed on both sides of the pipe fitting 110, a sealing ring 130 sleeved inside the convex rings 120, an internal threaded ring 140 installed on the inner wall of the pipe fitting 110 near the middle, and a small sealing ring 150 disposed in the middle of the internal threaded ring 140. There are two sets of convex rings 120, and each set of convex rings 120 has three compression zones 160 pressed on its side. The number of sealing rings 130 is two sets that match the number of convex rings 120, and a convex ring is provided in the middle of the inner side of the sealing ring 130. The inner tube mechanism includes a pipe 210 inserted into the pipe fitting 110 and an external threaded ring 220 assembled on the outer side of the inner end of the pipe 210. The external threaded ring 220 is threadedly connected to the internal threaded ring 140. A groove is provided on the outer side of the pipe 210 corresponding to the position of the sealing ring 130. The internal threaded ring 140 is provided with two threads, and the thread end on the external threaded ring 220 is in a closed state.

[0015] Specifically, the sealing ring 130 is used in conjunction with the groove on the pipe 210 so that when the sealing ring 130 is squeezed, it will fit more closely to the outside of the pipe 210, improving the sealing performance. At the same time, two sealing rings 130 are used for sealing, further improving the sealing performance of the connection.

[0016] The working principle and usage process of this utility model are as follows: First, insert one end of the pipe 210 with the external threaded ring 220 into the pipe fitting 110 until the pipe 210 can no longer move forward. At this time, rotate the pipe 210 to drive the external threaded ring 220 to rotate, so that the external threaded ring 220 begins to connect with the internal threaded ring 140 and pulls the pipe 210 to move into the pipe fitting 110 until the end of the external threaded ring 220 abuts against the front end of the internal threaded ring 140, thus completing the positioning and fixing the position of the pipe 210. Finally, use hydraulic clamps to squeeze around the convex ring 120 to form a compression zone 160, which compresses and deforms the sealing ring 130 to achieve a seal. Finally, test it, and if it passes the test, it can be used.

[0017] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-seal structure for stainless steel press-fit pipe fittings, characterized in that, include: Sleeve mechanism and inner tube mechanism; The sleeve mechanism includes a pipe fitting (110), a convex ring (120) disposed on both sides of the pipe fitting (110), a sealing ring (130) sleeved inside the convex ring (120), an internal threaded ring (140) installed on the inner wall of the pipe fitting (110) near the middle, and a small sealing ring (150) disposed in the middle of the internal threaded ring (140). The inner tube mechanism includes a tube (210) inserted into the tube fitting (110) and an external threaded ring (220) assembled on the outer side of the inner end of the tube (210). The external threaded ring (220) is threadedly connected to the internal threaded ring (140).

2. The multi-seal structure of the stainless steel press-fit pipe fitting according to claim 1, characterized in that, The number of the convex rings (120) is two sets, and the two sets of convex rings (120) have three extrusion zones (160) pressed on their sides.

3. The multi-sealing structure of the stainless steel press-fit pipe fitting according to claim 1, characterized in that, The number of sealing rings (130) is two sets that match the number of convex rings (120), and a convex ring is provided in the middle of the inner side of the sealing ring (130).

4. The multi-sealing structure of the stainless steel press-fit pipe fitting according to claim 1, characterized in that, The internal threaded ring (140) has two threads, and the thread ends on the external threaded ring (220) are closed.

5. The multi-seal structure of the stainless steel press-fit pipe fitting according to claim 1, characterized in that, The outer side of the pipe (210) is provided with a groove corresponding to the sealing ring (130).

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