CN115031069B

CN115031069B - Connector for connecting pipeline and equipment

Info

Publication number: CN115031069B
Application number: CN202210703988.2A
Authority: CN
Inventors: 张君波; 周德乾; 杨克; 洪威博; 洪利兵; 包军伟; 张家鑫
Original assignee: Ningbo Junhe Intelligent Technology Co ltd
Current assignee: Ningbo Junhe Intelligent Technology Co ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2023-11-14
Anticipated expiration: 2042-06-21
Also published as: CN115031069A

Abstract

The application discloses a connector for connecting pipelines and equipment, which comprises a connecting piece, a first connecting pipe and a second connecting pipe, wherein a limiting area is arranged on the surface of the second connecting pipe; the second connecting pipe is provided with a clamping piece, and the clamping piece acts on the connecting piece to limit the retaining part of the connecting piece to be embedded into the limiting area. After the first connecting pipe and the second connecting pipe are assembled, the connection relation is reliable.

Description

Connector for connecting pipeline and equipment

Technical Field

The present application relates to a connecting fitting for a pipeline, and more particularly, to a connector for connecting a pipeline to a device.

Background

A connector is a device that connects or connects two or more parts. In the case of a pump, the hose connector will be applied as a hose coupling. The hose connector may be provided at one end of the hose. The hose connector may connect the hose to another hose or with a tap or appliance, such as an irrigation water jet pump or the like.

However, the connection of the hose to the pump is a cumbersome process, and many technical problems may occur in assembling or disassembling the hose and the pump. Chinese patent application "plug connector and method of assembling a plug connector for two conduits", application/patent number: CN201480012609.9 discloses that the free end of the first conduit and the free end of the second conduit can be interconnected. The clip having two side arms is inserted into a guide of the clip, each of the two side arms having a catch element, wherein the guide is formed on the free end of the first catheter tube. The fastening clips, which are inserted into the guide elements, cooperate with fastening areas on the free end of the second guide tube by means of the shape and friction fit of each latching element. The application can be seen to be used in all vehicles in which the conduit or hose must be fixed to the container, or in general the two conduits must be interconnected. The two ducts may for example be designed for guiding fuel. In the case of flexible hoses, it is reasonable to design the free end of the conduit or hose to be dimensionally stable, thereby achieving a sealed, stable and reliable connection between the conduits or hoses. With the application it is possible in a simple manner to interconnect two catheters and to disassemble them again.

The above-mentioned patent application can solve the convenient dismantlement and the connection of two nozzle stubs. However, the following problems exist: the clamping of the retaining clip to the second guide tube is achieved by the cooperation of a stop arranged in the retaining region with a shoulder of the locking element, in particular by the friction-fit abutment of the shoulder against a sector-shaped recess in the retaining region. During actual installation, the second conduit is movable relative to the first conduit, including being movable in a circumferential direction (i.e., rotatable about an axis). Rotation of the second conduit exerts a force on the latch of the clip that is likely to cause the latch to disengage from the attachment area. The engagement of the clip with the fixation section is not reliable, and the possibility of the clip falling off the fixation section of the second catheter may occur, thereby causing the first catheter to become detached from the second catheter.

Disclosure of Invention

The application aims to provide a connector for connecting a pipeline and equipment, which ensures that the connection relationship is reliable after a first connecting pipe and a second connecting pipe are assembled.

The application adopts the technical scheme that: the connector for connecting the pipeline and the equipment comprises a connecting piece, a first connecting pipe and a second connecting pipe, wherein a limiting area is arranged on the surface of the second connecting pipe;

the second connecting pipe is provided with a clamping piece, and the clamping piece acts on the connecting piece to limit the retaining part of the connecting piece to be embedded into the limiting area.

Compared with the prior art, the application has the advantages that the clamping piece is arranged on the second connecting pipe, and the connecting piece is deactivated by the clamping piece, so that the connecting piece can be kept in a limiting area, and the axial movement of the first connecting pipe is limited. That is, the first connecting pipe and the second connecting pipe are not separated due to the action of the connecting piece on the first connecting pipe, so that the connection reliability of the first connecting pipe and the second connecting pipe is ensured. In contrast to the prior art, the application provides a clamping element on the second pipe, while the connecting element is mounted on the second pipe. In the operating state of the entire connector, no relative displacement occurs between the connection piece and the second conduit, i.e. the second connection piece itself does not exert a force on the connection piece which would disengage the connection piece. Therefore, the connecting piece is stably and reliably arranged on the second connecting piece, and the connection of the first pipeline and the second pipeline is not disconnected without disconnecting the connecting piece.

In some embodiments of the application, the connecting piece comprises a U-shaped clamp sleeved on the second connecting pipe and clamping protrusions arranged at two ends of the inner wall surface of the U-shaped clamp, and clamping portions are arranged at the ends of the U-shaped clamp and are in contact connection with the clamping piece. Or the clamping convex is provided with a clamping surface, the connecting piece is a bulge, and the clamping surface is jointed with one surface of the bulge to form clamping. In the application, the clamping part of the connecting piece is matched with the clamping piece, so that the connecting piece is mounted on the second connecting pipe.

In the present application, the clevis is mounted on the second connecting tube. For convenience of description, an axial direction of the second connection pipe at the position of the clevis is defined as an axial direction of the clevis, a radial direction of the second connection pipe at the position of the clevis is defined as a radial direction of the clevis, and a circumferential direction of the second connection pipe at the position of the clevis is defined as a circumferential direction of the clevis.

The shape of the clevis may also be considered as an open semi-circular ring structure. The clevis itself also has an axial direction, a radial direction and a circumferential direction.

Specifically, the joint portion be bar structure, joint portion set up along the axial of annular spare, the U-shaped clamp is stretched out at joint portion's both ends, joint portion's both ends and joint spare contact.

More specifically, the cross section of joint portion is L shape, and the first side of joint portion is located the extension face of U-shaped clamp outer peripheral face. The second side of the clamping part is perpendicular to the first side. I.e. the second side of the clamping portion is arranged in the radial direction of the end of the clevis. The second side surface of the clamping part is an action surface contacted with the clamping piece. The cross section of the clamping part is L-shaped, so that the structural strength of the clamping part is effectively improved, and the clamping part can be better forced by the clamping piece and does not deform. I.e. the reliability of the mounting of the connection piece on the second connection pipe is improved.

In some embodiments of the application, the card is convexly embedded in the limit area. The clamping protrusion is a sheet structural member and is arranged along the circumference of the U-shaped clamp, and the clamping protrusion is perpendicular to the U-shaped clamp. The clamping protrusion is connected with the clamping part, and the clamping protrusion is connected with the U-shaped clamp. The structure strength of the clamping convex part is improved, so that the clamping convex part cannot deform even if the clamping convex part receives the acting force of the first connecting pipe in the limiting area, and the connection reliability of the first connecting pipe and the second connecting pipe is improved.

In some embodiments of the application, the clevis includes two curved segments, each of which has a reinforcing bar disposed on an inner wall surface. The two bending sections are the positions with the largest stress when the whole U-shaped clamp deforms, and the reinforcing strips are additionally arranged to help prevent the U-shaped clamp from cracking, so that the service life of the U-shaped clamp is prolonged. The U-shaped clamp is also beneficial to improving the structural strength of the U-shaped clamp and avoiding bending deformation of the U-shaped clamp in a state that a user does not apply force.

In some embodiments of the present application, the surface of the second connecting pipe is provided with a mounting seat for mounting the U-shaped clip, and the mounting seat is formed by two mounting pieces arranged along the circumference of the second connecting pipe.

The end part of the mounting piece forms a clamping piece, and the end surface of the mounting piece is an acting surface for the clamping piece to contact with the connecting piece.

Specifically, the end part of the mounting piece extends to the periphery to form a clamping piece. The structure strength of the clamping piece is effectively increased, the contact surface of the clamping piece and the clamping part is increased, and the connection reliability of the clamping piece and the clamping part is improved.

In some embodiments of the present application, the surface of the second connecting tube is provided with a notch, the notch is adapted to the convex clamping structure, and the convex clamping part passes through the notch. In the actual use process, the notch is completely shielded by the U-shaped clamp, so that particles, dust and the like in the external environment are prevented from entering the connector.

In some embodiments of the present application, the surface of the first connecting tube is provided with an annular limiting groove, and the clamping protrusion moves in the limiting groove along the circumferential direction of the limiting groove, and the first connecting tube rotates relative to the second connecting tube.

The outer surface of the first port of the first connecting pipe is provided with a sealing element. After the first connecting pipe is in butt joint with the second connecting pipe, the sealing piece is extruded, and sealing connection is achieved.

In some embodiments of the application, the first connecting tube surface is provided with a stop collar. The first end of the first connecting rod is connected to the outlet of the equipment, the second end of the first connecting rod is inserted into the first end of the second connecting rod, and the limiting ring can prevent the sealing structure from being invalid due to excessive butt joint when the first connecting rod is connected with the equipment or the second connecting pipe. I.e. the diameter of the stop collar is larger than the inner diameter of the outlet of the device and also larger than the inner diameter of the first end of the second connecting tube.

In some embodiments of the present application, the second end surface of the first connecting tube is provided with a guide ring and a guide piece, an axial space exists between the guide ring and the guide piece, and the space between the guide ring and the guide piece forms a limit groove.

Specifically, the direction set up around the periphery of first connecting pipe, the axial setting of guide blade along first connecting pipe is at first connecting pipe periphery.

In some embodiments of the application, the first connecting tube surface is provided with a plurality of guide rings. The guide rings are coaxially arranged, a space exists between two adjacent guide rings, the outer diameters of the guide rings are different, and the guide rings together form a slope. In the present application, the regular arrangement of the plurality of guide rings functions as: in the butt joint process of the first connecting pipe and the second connecting pipe, as the clamping convex part extends into the second connecting pipe, the slope formed by the guide rings plays a role in guiding the clamping convex, and the first connecting pipe and the second connecting pipe are prevented from being difficult in butt joint.

Specifically, a space exists between two adjacent guide rings, which is smaller than the thickness of the clamping convex. I.e. to avoid the snap-in of the snap-in into the gap between the two guide rings. The application adopts a plurality of guide rings to form a slope surface with a guide function, so that the material cost is saved and the weight is reduced. And a plurality of guide rings with intervals have better elastic performance, and the resistance is smaller when the first connecting pipe and the second connecting pipe are in butt joint.

Meanwhile, one side surface of the clamping convex towards the first port of the second connecting pipe is an inclined surface. Specifically, the inclined plane setting of card protruding is used with a plurality of guide rings. When the connectors are in butt joint, the clamping convex can smoothly move into the limit groove along the guide ring.

In some embodiments of the application, the first connecting tube surface is provided with a plurality of guide tabs. The plurality of guide sheets are uniformly distributed on the outer surface of the first connecting pipe along the axial direction of the first connecting pipe.

In some embodiments of the application, a third connecting tube is further included, and the first end of the third connecting tube is in threaded connection with the second connecting tube.

The second end of the third connecting pipe is provided with a stepped pipe group which comprises at least two interface pipes with different diameters. The outer surface of the interface tube is provided with annular inverted teeth. Namely, the third connecting pipe is directly spliced with the hose and can be adapted to hoses with different calibers.

If the pipeline to be connected is provided with a threaded connection port, the third connecting pipe and the second connecting pipe are disassembled, and the hose is directly connected with the second end of the second connecting pipe. The application can realize the connection of equipment and pipelines with different specifications and shapes, and the connection structure is stable and reliable.

Drawings

The application will be described in further detail below in connection with the drawings and the preferred embodiments, but it will be appreciated by those skilled in the art that these drawings are drawn for the purpose of illustrating the preferred embodiments only and thus should not be taken as limiting the scope of the application. Moreover, unless specifically indicated otherwise, the drawings are merely schematic representations, not necessarily to scale, of the compositions or constructions of the described objects and may include exaggerated representations.

FIG. 1 is a schematic view of the structure of the present application in a use state;

FIG. 2 is a schematic diagram of an exploded construction of the present application;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a cross-sectional view of the AA in FIG. 3;

FIG. 5 is a cross-sectional view of section BB in FIG. 3;

FIG. 6 is a cross-sectional view of the section CC of FIG. 3;

FIG. 7 is a cross-sectional view of a fifth embodiment;

fig. 8 is an exploded view of the fifth embodiment.

Wherein, the reference numerals specifically explain as follows: 1. a connecting piece; 1a, U-shaped clamps; 1b, clamping a convex; 1c, a clamping part; 1d, bending sections; 1e, reinforcing strips; 2. a first connection pipe; 3. a second connection pipe; 4. a clamping piece; 5. a mounting piece; 6. a notch; 7. a limit groove; 8. a seal; 9. a limiting ring; 10. a guide piece; 11. a guide ring; 12. a third connection pipe; 13. an interface tube; 21. a protrusion; 22. and a clamping surface.

Detailed Description

The present application will be described in detail with reference to the accompanying drawings.

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

A connector for connecting a pipeline to equipment, as shown in fig. 1 and 2: the connecting piece 1 is arranged on the second connecting pipe 3, part of the connecting piece 1 penetrates through the pipe wall of the first connecting pipe 2 and is embedded into the limiting area of the second connecting pipe 3, and the connecting piece 1 positioned in the limiting area limits the axial movement of the first connecting pipe 2; the second connecting pipe 3 is provided with a clamping piece 4, and the clamping piece 4 acts on the connecting piece 1 to limit the embedding limit area of the retaining part of the connecting piece 1. In the overall working state of the coupling, no relative displacement occurs between the coupling element 1 and the second conduit, i.e. the second coupling element 1 itself does not exert a force on the coupling element 1 which would disengage the coupling element 1. The connection piece 1 according to the application is thus stably and reliably mounted on the second connection piece 1, and the connection piece 1 is not disconnected, so that the connection of the first pipe and the second pipe is not disconnected.

The application arranges the clamping piece 4 on the second connecting pipe 3, and the connecting piece 1 is deactivated by the clamping piece 4, so that the connecting piece 1 can be kept in a limit area, thereby limiting the axial movement of the first connecting pipe 2. That is, the first connecting pipe 2 is not disconnected from the second connecting pipe 3 by the connection member 1, so that the reliability of the connection of the first connecting pipe 2 and the second connecting pipe 3 is ensured.

In the second embodiment, as shown in fig. 2 to 5, the connector 1 includes a U-shaped clip 1a sleeved on the second connecting pipe 3, and clip protrusions 1b disposed at two ends of the inner wall surface of the U-shaped clip 1a, where a clip portion 1c is disposed at an end of the U-shaped clip 1a, and the clip portion 1c is in contact connection with the clip 4. Or the clamping convex 1b is provided with a clamping surface 22, the connecting piece 4 is a bulge 21, and the clamping surface 22 is attached to one surface of the bulge 21 to form clamping. In the application, the clamping part 1c of the connecting piece 1 is matched with the clamping piece 4, so that the connecting piece 1 is mounted on the second connecting pipe 3.

In the present application, the clevis 1a is mounted on the second connecting tube 3. For convenience of description, the axial direction of the second connection pipe 3 at the position of the clevis 1a is defined as the axial direction of the clevis 1a, the radial direction of the second connection pipe 3 at the position of the clevis 1a is defined as the radial direction of the clevis 1a, and the circumferential direction of the second connection pipe 3 at the position of the clevis 1a is defined as the circumferential direction of the clevis 1 a.

The shape of the clevis 1a may also be considered as an open semi-circular ring structure. The clevis 1a itself has an axial direction, a radial direction and a circumferential direction. Specifically, the clamping part 1c is a strip-shaped structural member, the clamping part 1c is arranged along the axial direction of the annular member, two ends of the clamping part 1c extend out of the U-shaped clamp 1a, and two ends of the clamping part 1c are in contact with the clamping member 4.

More specifically, the cross section of the clamping portion 1c is L-shaped, and the first side surface of the clamping portion 1c is located on the extending surface of the outer peripheral surface of the U-shaped clip 1 a. The second side of the clamping part 1c is perpendicular to the first side. I.e. the second side of the clamping portion 1c is arranged along the radial direction of the end of the clevis 1 a. The second side surface of the clamping part 1c is an action surface contacted with the clamping piece 4. The cross section of the clamping part 1c is L-shaped, so that the structural strength of the clamping part 1c is effectively improved, and the clamping part 1c can be better forced by the clamping piece 4 and does not deform. I.e. the reliability of the mounting of the connector 1 on the second connecting tube 3 is improved.

The clamping convex 1b is embedded into the limit area. The clamping convex part 1b is a sheet-shaped structural part, the clamping convex part 1b is arranged along the circumferential direction of the U-shaped clamp 1a, and the clamping convex part 1b is perpendicular to the U-shaped clamp 1 a. The clamping convex 1b is connected with the clamping part 1c, and the clamping convex 1b is connected with the U-shaped clamp 1 a. That is, the structural strength of the clamping protrusion 1b is improved, so that the clamping protrusion 1b cannot deform even if the clamping protrusion receives the acting force of the first connecting pipe 2 in the limiting area, and the reliability of the connection between the first connecting pipe 2 and the second connecting pipe 3 is improved.

The U-shaped clamp 1a comprises two bending sections 1d, and the inner wall surfaces of the two bending sections 1d are provided with reinforcing strips 1e. The two bending sections 1d are the positions with the largest stress when the whole U-shaped clamp 1a deforms, and the reinforcing strips 1e are added to help prevent the U-shaped clamp 1a from being broken and prolong the service life of the U-shaped clamp 1 a. The structural strength of the U-shaped clamp 1a is also improved, and bending deformation of the U-shaped clamp is avoided under the condition that a user does not apply force.

The surface of the second connecting pipe 3 is provided with a mounting seat for mounting the U-shaped clamp 1a, and the mounting seat is composed of two mounting pieces 5 arranged along the circumferential direction of the second connecting pipe 3.

The end of the mounting piece 5 forms a clamping piece 4, and the end surface of the mounting piece 5 is an acting surface for the clamping piece 4 to contact with the connecting piece 1. Specifically, the end of the mounting piece 5 extends to the outer periphery to form the clamping piece 4. The structural strength of the clamping piece 4 is effectively increased, the contact surface of the clamping piece 4 and the clamping portion 1c is increased, and the reliability of connection of the clamping piece 4 and the clamping portion 1c is improved.

The surface of the second connecting pipe 3 is provided with a notch 6, the notch 6 is matched with the structure of the clamping convex 1b, and the clamping convex 1b partially penetrates through the notch 6. During actual use, this notch 6 will be completely blocked by the clevis 1a, and particles, dust, etc. in the outside environment are prevented from entering the connector.

The other contents of the second embodiment are the same as those of the first embodiment.

In the third embodiment, as shown in fig. 2 to 5, an annular limiting groove 7 is provided on the surface of the first connecting pipe 2, the limiting area is the limiting groove 7, the clamping protrusion 1b moves in the limiting groove 7 along the circumferential direction of the limiting groove 7, and the first connecting pipe 2 rotates relative to the second connecting pipe 3.

The outer surface at the first port of the first connecting tube 2 is provided with a seal 8. After the first connecting pipe 2 is in butt joint with the second connecting pipe 3, the sealing piece 8 is extruded, and sealing connection is realized.

The surface of the first connecting pipe 2 is provided with a limiting ring 9. The first end of the first connecting rod is connected to the outlet of the equipment, the second end of the first connecting rod 2 is inserted into the first end of the second connecting pipe 3, and the limiting ring 9 can prevent the sealing structure from being invalid due to excessive butt joint when the first connecting pipe 2 is connected with the equipment or the second connecting pipe 3. I.e. the diameter of the stop collar 9 is larger than the inner diameter of the device outlet and also larger than the inner diameter of the first end of the second connecting tube 3.

The second end surface of the first connecting pipe 2 is provided with a guide ring 11 and a guide sheet 10, an axial space exists between the guide ring 11 and the guide sheet 10, and the space between the guide ring 11 and the guide sheet 10 forms a limit groove 7. Specifically, the guide ring 11 is disposed around the outer periphery of the first connecting tube 2, and the guide piece 10 is disposed around the outer periphery of the first connecting tube 2 along the axial direction of the first connecting tube 2.

The surface of the first connecting pipe 2 is provided with a plurality of guide rings 11. The guide rings 11 are coaxially arranged, a space exists between two adjacent guide rings 11, the outer diameters of the guide rings 11 are different, and the guide rings 11 together form a slope. In the present application, the effect of the regular arrangement of the plurality of guide rings 11 is that: in the butt joint process of the first connecting pipe 2 and the second connecting pipe 3, as the clamping convex 1b part extends into the second connecting pipe 3, the slope formed by the plurality of guide rings 11 plays a role in guiding the clamping convex 1b, and the first connecting pipe 2 and the second connecting pipe 3 are prevented from being difficult in butt joint.

Specifically, a distance of Yu Katu b is provided between two adjacent guide rings 11. I.e. to avoid the snap-in of the snap-in projection 1b into the gap between the two guide rings 11. The application adopts a plurality of guide rings 11 to form a slope surface with a guide function, so that the material cost is saved and the weight is reduced. The second plurality of guide rings 11 with intervals have better elastic performance, and the resistance is smaller when the first connecting pipe 2 and the second connecting pipe 3 are in butt joint.

At the same time, one side surface of the clamping convex 1b facing the first port of the second connecting pipe 3 is an inclined surface. Specifically, the inclined surface of the clamping protrusion 1b is matched with a plurality of guide rings 11. When the connectors are in butt joint, the clamping convex 1b can smoothly move into the limit groove 7 along the guide ring 11.

The first connecting tube 2 is provided with a plurality of guide tabs 10 on its surface. The plurality of guide pieces 10 are uniformly distributed on the outer surface of the first connecting pipe 2 along the axial direction of the first connecting pipe 2.

The other contents of the third embodiment are the same as those of the second or first embodiment.

In the fourth embodiment, as shown in fig. 2 and 6, the device further includes a third connecting pipe 12, where a first end of the third connecting pipe 12 is screwed with the second connecting pipe 3.

The second end of the third connecting tube 12 is provided with a stepped tube set comprising at least two interface tubes 13 of different diameters. The outer surface of the interface tube 13 is provided with annular inverted teeth. Namely, the third connecting pipe 12 is directly spliced with the hose and can be matched with hoses with different calibers.

If the pipe to be connected is provided with a threaded connection port, the third connecting pipe 12 is detached from the second connecting pipe 3, and the hose is directly connected with the second end of the second connecting pipe 3. The application can realize the connection of equipment and pipelines with different specifications and shapes, and the connection structure is stable and reliable.

The other matters of the fourth embodiment are the same as those of any of the above embodiments.

Embodiment five, as shown in fig. 7 and 8, is different from embodiment two in that: embodiment five differs from embodiment two in that: the two notches 6 are located in the lower half of the joint circumference, the length of the U-shaped clip 1a is longer, the U-shaped clip 1a covers a position beyond a semicircle, and the edges of the two notches 6 close to each other are provided with a protrusion 21. The clamping convex 1b is embedded into the notch 6, and one side surface of the clamping convex 1b is in contact connection with the wall surface of the notch 6 and the side surface of the clamping convex 1b, so that clamping is realized. The wall surface at the lower end of the bulge 21 is attached to one side surface of the clamping bulge 1b, so that the effect of limiting the clamping bulge 1b is achieved, and the wall surface at the lower end of the bulge 21 can be understood as the extension of the wall surface of the notch 6, so that the area of the wall surface of the notch 6 is increased, and the clamping bulge 1b is more stable after being clamped and is not easy to disengage.

Specifically, one side surface of the clamping protrusion 1b is a clamping surface 22, the clamping surface 22 is in contact connection with the wall surface of the notch 6 and the side surface of the clamping protrusion 1b, that is to say, the plane combined by the wall surface of the notch 6 and the wall surface at the lower end of the protrusion 21 is attached to the clamping surface 22, so that the contact area is increased, and the connection stability is higher; in the assembled state, the engagement surfaces 22 on the two engagement projections 1b lie on the same plane. This is a preferable structure so that the click 1b is not easily detached from the notch 6 without being subjected to an external force.

The longitudinal section of the U-shaped clamp 1a is a preferred arc section. The clevis 1a wraps the central axis of the second connecting tube 3. The U-shaped clamp 1a is high in structural strength, good in stability and stable after assembly.

The other contents of the fifth embodiment are the same as those of the first, third or fourth embodiments.

The foregoing has outlined rather broadly the principles and embodiments of the present application in order that the detailed description of the application may be implemented in conjunction with a specific embodiment (e.g., the first connection may be connected to a hose and the second connection may be connected to a water pump). It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.

Claims

1. The connector for connecting the pipeline and the equipment is characterized by comprising a connecting piece (1), a first connecting pipe (2) and a second connecting pipe (3), wherein a limiting area is arranged on the surface of the second connecting pipe (3), the connecting piece (1) is arranged on the second connecting pipe (3), part of the connecting piece (1) penetrates through the pipe wall of the first connecting pipe (2) to be embedded into the limiting area of the second connecting pipe (3), and the connecting piece (1) positioned in the limiting area limits the axial movement of the first connecting pipe (2); the second connecting pipe (3) is provided with a clamping piece (4), and the clamping piece (4) acts on the connecting piece (1) to limit the part of the connecting piece (1) to be embedded into the limiting area;

the connecting piece (1) comprises a U-shaped clamp (1 a) sleeved on the second connecting pipe (3), and clamping protrusions (1 b) arranged at two ends of the inner wall surface of the U-shaped clamp (1 a); the end part of the U-shaped clamp (1 a) is provided with a clamping part (1 c), and the clamping part (1 c) is in contact connection with the clamping piece (4);

the surface of the second connecting pipe (3) is provided with a mounting seat for mounting the U-shaped clamp (1 a), and the mounting seat is composed of two mounting sheets (5) circumferentially arranged along the second connecting pipe (3); the end part of the mounting piece (5) forms a clamping piece (4), and the end surface of the mounting piece (5) is an acting surface for the clamping piece (4) to contact with the connecting piece (1).

2. The connector for connecting a pipeline and equipment according to claim 1, wherein the clamping part (1 c) is a strip-shaped structural member, the clamping part (1 c) is arranged along the axial direction of the annular member, two ends of the clamping part (1 c) extend out of the U-shaped clamp (1 a), and two ends of the clamping part (1 c) are in contact with the clamping member (4); the cross section of the clamping part (1 c) is L-shaped, the first side face of the clamping part (1 c) is positioned on the extending face of the outer peripheral face of the U-shaped clamp (1 a), and the second side face of the clamping part (1 c) is perpendicular to the first side face.

3. A connector for connecting pipes and devices according to claim 1, characterized in that said snap-on projections (1 b) are embedded in the limit area; the clamping convex part (1 b) is a sheet structural part; the U-shaped clamp (1 a) comprises two bending sections (1 d), and reinforcing strips (1 e) are arranged on the inner wall surfaces of the two bending sections (1 d).

4. The connector of connecting pipelines and equipment according to claim 1, characterized in that the surface of the first connecting pipe (2) is provided with an annular limiting groove (7), the limiting area is the limiting groove (7), the clamping protrusion (1 b) moves in the limiting groove (7) along the circumferential direction of the limiting groove (7), and the first connecting pipe (2) rotates relative to the second connecting pipe (3).

5. A connection tube and device connector according to claim 4, characterized in that the second end surface of the first connection tube (2) is provided with a guide ring (11) and a guide piece (10), an axial distance is provided between the guide ring (11) and the guide piece (10), and the distance between the guide ring (11) and the guide piece (10) constitutes the limit groove (7).

6. A connection pipe and device connector according to claim 5, characterized in that the surface of the first connecting pipe (2) is provided with a plurality of guide rings (11); the guide rings (11) are coaxially arranged, a space exists between two adjacent guide rings (11), the outer diameters of the guide rings (11) are different, and the guide rings (11) together form a slope.

7. A connection line and device connector according to claim 1, further comprising a third connection tube (12), said third connection tube (12) being threaded at a first end thereof with the second connection tube (3).

8. A connection of pipes and equipment according to claim 7, characterized in that the second end of the third connection pipe (12) is provided with a stepped pipe stack comprising at least two interface pipes (13) of different diameters; the outer surface of the interface tube (13) is provided with annular inverted teeth.