Cutting sleeve joint structure easy to use for long time

Abstract

The utility model relates to a ferrule joint structure easy to use for a long time, which is characterized in that the ferrule joint structure comprises a joint body, a nut and a ferrule, one end of the joint body is used as a locking end for a pipeline to insert, the nut is sleeved at the locking end, and the nut and the locking end are in threaded fit; the inner diameter of the end of one side of the clamping sleeve is sequentially increased in the direction away from the connector body, an inclined extrusion side wall is formed, an installation step is arranged on the inner side of the connector body and connected with a detachable sealing seat, a sealing side wall capable of being coupled with the extrusion side wall is arranged on the inner wall of the sealing seat, and the outer wall of the sealing seat is attached to the inner wall of the locking end. And the sealing seat replaces the locking end to form extrusion deformation with the clamping sleeve so as to form sealing fit between the locking end and the clamping sleeve. The utility model has the following advantages and effects: the replacement cost can be reduced, and the long-term use is benefited.

Description

Technical Field

[0001] This utility model relates to the field of ferrule connector technology, specifically to a ferrule connector structure that is easy to use for a long time. Background Technology

[0002] Compression fittings are sealing pipe fittings suitable for non-corrosive or corrosive media such as oil, water, and gas. Currently, compression fittings are mainly divided into single-compression and double-compression structures, the difference being the number of compression fittings.

[0003] For example, Chinese patent document CN222186092U discloses a leak-proof compression fitting, comprising: a fitting body, a tube fixedly installed on the left side of the fitting body, a nut threaded on the outer side of the left end of the fitting body; and a bottom ring block fixedly installed on the left end of the nut.

[0004] In the above technical solution, after the pipe is inserted into the connector body, the nut is rotated to push the ferrule axially toward the end of the connector body. Under the compression of the ferrule, the inner side of the connector body, the outer side of the pipe, and the ferrule can be compressed and deformed, so that the three can fit tightly together, thereby achieving a seal between them.

[0005] However, during long-term use, it was found that since the connector body and ferrule are generally made of metal, the deformation of the connector body and ferrule is irreversible, which leads to an increase in the gap between the connector body and ferrule. Therefore, after a certain period of use, the connector body and ferrule need to be replaced together, resulting in a large overall replacement cost and making it unsuitable for long-term use. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a ferrule connector structure that is easy to use for a long time, which can reduce replacement costs and is beneficial for long-term use.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a ferrule connector structure that is easy to use for a long time, including a connector body, a nut, and a ferrule. One end of the connector body serves as a locking end for pipe insertion. The nut is fitted onto the locking end, forming a threaded fit between the two. One end of the ferrule has an inner diameter that gradually increases away from the connector body, forming an inclined compression sidewall. The inner side of the connector body is provided with an installation step, which is connected to a detachable sealing seat. The inner wall of the sealing seat is provided with a sealing sidewall that can couple with the compression sidewall. The outer wall of the sealing seat fits against the inner wall of the locking end. The sealing seat replaces the locking end and forms a compression deformation with the ferrule to form a sealing fit between them.

[0008] The present invention is further provided with a sealing ring at the junction of the mounting step and the sealing seat.

[0009] The present invention is further configured such that: the mounting step is provided with a recessed mounting groove, the sealing ring is adapted to the mounting groove, and the sealing ring is embedded in the mounting groove.

[0010] The present invention is further configured such that: the mounting step is provided with a first threaded hole, there are multiple first threaded holes and they are evenly distributed around the circumference; the sealing seat is provided with a through second threaded hole, the second threaded hole corresponds to the first threaded hole, and the first threaded hole and the second threaded hole are connected by a locking member.

[0011] The present invention is further configured such that: the inner wall of the connector body is provided with a positioning step for the end of the pipe to abut.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] Because a removable sealing seat is provided on the mounting step inside the connector body, when connecting the pipe, the pipe is first inserted into the connector body so that the end of the pipe abuts against the positioning step. Then, by turning the nut, the nut can push the ferrule to move axially, so that the compression side wall of the ferrule gradually couples with the sealing side wall of the sealing seat until they are squeezed and deformed. In this way, the sealing seat, ferrule and pipe can fit tightly together to achieve a seal. Therefore, by setting a sealing seat, the connector body can directly contact the ferrule for sealing instead of the connector body. It acts as a buffer between the connector body and the ferrule, thereby reducing or avoiding the deformation of the connector due to pressure, so as to facilitate long-term use. During long-term use, only the sealing seat and ferrule need to be replaced, which reduces the replacement cost during long-term use. Therefore, it effectively solves the technical problem of the existing technology that uses the connector body to directly squeeze and seal with the ferrule, resulting in high replacement costs during long-term use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the present invention. Detailed Implementation

[0017] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] like Figures 1 to 3 As shown, this utility model discloses a ferrule connector structure that is easy to use for a long time, including a connector body 1, a nut 2, and a ferrule 3. One end of the connector body 1 serves as a locking end for inserting a pipe 200. The locking end has an external thread on its outer side, and the internal thread on the inner side of the nut 2 can form a threaded engagement with this external thread. Thus, the nut 2 can be fitted onto the locking end. By rotating the nut 2, it can be moved axially along the connector body 1, pushing the ferrule 3 into the connector body 1. The end of the ferrule 3 near the connector body 1 is designed as an inclined compression sidewall 31, whose inner diameter gradually increases in the direction away from the connector body 1, forming a conical structure. The inner side of the connector body 1 is provided with an installation step 101, and the installation step 101 is connected to a detachable sealing seat 4. Specifically, the installation step 101 is provided with a plurality of circumferentially distributed first threaded holes, and the sealing seat 4 is provided with a second threaded hole 42 corresponding to the position of the first threaded hole. By using a locking member that can form a threaded engagement with the first threaded hole and the second threaded hole 42, the sealing seat 4 can be fixed to the installation step 101. The inner wall of the sealing seat 4 is provided with a sealing side wall 41 that matches the shape of the compression side wall 31 of the ferrule 3, and the outer wall is tightly fitted with the inner wall of the locking end.

[0020] During assembly, insert the pipe 200 into the locking end until the end of the pipe 200 abuts against the positioning step 103 on the inner wall of the connector body 1 to ensure consistent insertion depth. Then, place the ferrule 3 over the pipe 200 and screw the nut 2 into the external thread of the locking end. When tightening the nut 2, it pushes the compression side wall 31 of the ferrule 3 to couple with the sealing side wall 41 of the sealing seat 4. Under axial pressure, the ferrule 3 undergoes radial compression deformation, forming a seal with the outer wall of the pipe 200 and the sealing side wall 41. The detachable design of the sealing seat 4 allows for direct replacement of the sealing seat 4 without replacing the entire connector body 1 if the sealing surface wears after long-term use, significantly reducing replacement costs. Thus, by setting the sealing seat 4 to directly contact the ferrule 3 for sealing instead of the connector body 1, and acting as a buffer between the connector body 1 and the ferrule 3, the deformation of the connector due to pressure can be reduced or avoided, facilitating the long-term use of the connector body 1.

[0021] To further enhance sealing reliability, an annular mounting groove 102 is provided at the junction of the mounting step 101 and the sealing seat 4, and a sealing ring 5 (such as an O-ring) is embedded in the mounting groove 102. When compressed, the sealing ring 5 fills the gap between the mounting groove 102 and the sealing seat 4, preventing media leakage from the joint between the mounting step 101 and the sealing seat 4. This design is particularly suitable for high-pressure or corrosive fluid environments, forming a multi-stage sealing mechanism through the deformation sealing of the ferrule 3 and the static sealing of the sealing ring 5. The first threaded hole of the mounting step 101 and the second threaded hole 42 of the sealing seat 4 are connected by a locking element, ensuring the stability of the sealing seat 4 while ensuring sufficient compression of the sealing ring 5.

[0022] In addition, in terms of materials, stainless steel or high-strength alloy is preferred for the connector body 1, nut 2 and sealing seat 4 to take into account both corrosion resistance and pressure bearing capacity; the ferrule 3 is made of copper or mild steel to ensure a tight fit with the pipe 200 and sealing sidewall 41 after extrusion deformation; the sealing ring 5 is made of fluororubber or polytetrafluoroethylene to adapt to high temperature, high pressure and chemical corrosion environment.

[0023] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A ferrule structure for easy long-term use, characterized by, The utility model relates to a joint body, nut and sleeve, one end of the joint body is locked end for pipe insertion, the nut is sleeved on the locked end and constitutes the thread cooperation between both, one side end of the sleeve increases gradually in the direction away from the joint body along the inner diameter and forms the inclined extrusion side wall, the inside of the joint body is equipped with the installation step, the detachable sealing seat is connected to the installation step, the inner wall of the sealing seat is equipped with the sealing side wall that can be coupled with the extrusion side wall, the outer wall of the sealing seat is attached with the inner wall of the locked end, the sealing seat forms the extrusion deformation between the locked end and the sleeve to constitute the sealed cooperation between each other.

2. A ferrule structure for long term use, according to claim 1, wherein The intersection of the installation step and the sealing seat is equipped with a sealing ring.

3. A ferrule structure for long term use, according to claim 2, wherein The installation step is provided with a recessed installation groove, the sealing ring is matched with the installation groove, and the sealing ring is embedded in the installation groove.

4. A ferrule structure according to claim 3, wherein The installation step is provided with a first threaded hole, the first threaded hole is multiple and uniformly distributed according to the circumference, the sealing seat is provided with a second threaded hole penetrating through, the second threaded hole corresponds to the first threaded hole, and the first threaded hole and the second threaded hole are connected through a locking part.

5. The ferrule structure of claim 1, wherein, The inner wall of the joint body is provided with a positioning step for abutting against the end of the pipe.

Images