Blind plug connector

Abstract

The utility model discloses a blind plug connector which comprises a first connecting body and a second connecting body, a locking sleeve is arranged on the periphery of a first pipe and can rotate relative to the first connecting body in the circumferential direction, the locking sleeve is provided with a guiding channel in the circumferential direction, the guiding channel comprises a main channel and a buffering channel, and the main channel and the buffering channel form a herringbone shape. An inlet and outlet is formed in the end of the main channel, a cut-off part is arranged at the end of the buffer channel, a guide part is arranged at the end of the locking sleeve, a locking protruding part is arranged on the periphery of the second connecting body, and the guide part guides the locking protruding part making contact with the guide part to the inlet and outlet of the main channel. When the first connecting body is connected with the second connecting body, conduction of liquid flow channels in the first connecting body and the second connecting body is achieved in the inserting process. When the first connecting body is separated from the second connecting body, the locking convex part enters the buffer channel to effectively release the pressure in the liquid flow pipeline, and the situation that a large amount of liquid flows out and potential safety hazards are caused by explosion when the plug is separated is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline connection technical field especially a blind plug joint. BACKGROUND

[0002] In order to realize the connection of liquid pipeline, the head of two pipeline is usually connected by joint, so that liquid can flow into another pipeline from one pipeline. For some narrow space, it is usually connected by cathode and anode joint.

[0003] But the existing cathode and anode structure needs to adjust the cathode and anode to the proper angle and pose for inserting, and these operations are sometimes difficult in narrow space. In addition, when the pressure of liquid inside the joint pipeline is large, a large impact force can be generated in the process of joint disconnection, so that the cathode and anode are blown open, causing safety hazards. SUMMARY

[0004] The blind joint plug provided by the utility model does not need to accurately align the position when inserting and connecting, only needs to insert the end of the first connecting body and the second connecting body, so that the second connecting body can be inserted and connected, and the liquid flow channel of the first connecting body and the second connecting body is conducted. When the first connecting body and the second connecting body are separated, the liquid in the pipeline does not need to be closed, the pressure in the liquid flow channel is effectively released, and the safety hazards caused by the explosion of the plug when the plug is separated and the large amount of liquid flowing out are effectively prevented. Thus, the hot plugging of the pipeline is realized.

[0005] A blind plug joint includes a first connecting body, a second connecting body, and a locking sleeve arranged on the outer periphery of the first connecting body and rotatable along the circumference of the first connecting body. The locking sleeve is provided with a guide channel along the circumference. The guide channel includes a main channel, and the end of the main channel is provided with an inlet and outlet. The end of the locking sleeve is provided with a guide portion. The outer periphery of the second connecting body is provided with a locking protrusion. The locking protrusion can slide along the guide portion to the inlet and outlet of the main channel and enter the main channel through the inlet and outlet of the main channel. The guide channel further includes a buffer channel, and the end of the buffer channel is provided with a cutoff portion. The locking protrusion can slide along the buffer channel and / or the main channel to reach the inlet and / or the cutoff portion.

[0006] Further, the guide channel is arranged in multiple groups and is arranged at intervals along the outer periphery of the locking sleeve.

[0007] Further, the outer periphery of the first connecting body is provided with an annular track, and one end of the locking sleeve is arranged in the annular track.

[0008] Further, the guide portion includes a head portion and an end portion. The end portion is located at the inlet and outlet of the guide channel, and the head portion and the end portion form a guide surface therebetween. The guide surface is inclined or arc-shaped.

[0009] Further, the buffer channel can be multiple channels in communication with each other and / or the at least one buffer channel is provided with a cutoff portion.

[0010] Further, the guide channel is communicated with the locking groove at one end, and the locking convex portion can enter the locking groove through the main channel to realize the connection and locking of the connector.

[0011] Further, the main channel and the buffer channel form a "person" shape.

[0012] Further, the angle between the buffer channel and the end face of the shrink sleeve is B, and the angle between the main channel and the end face of the shrink sleeve is A, B>A.

[0013] Further, the angle B is 75°-90°.

[0014] Further, when the locking convex portion is located in the buffer channel, the liquid flow channels of the first connector and the second connector are in a cutoff state respectively.

[0015] The technical scheme of the utility model has the following technical effects:

[0016] When the first connector and the second connector are connected, only need to insert the second connector into the first connector, and the locking convex portion of the second connector can enter the main channel under the action of the guide portion, and enter the locking groove along the main channel, so that the connection of the first connector and the second connector is realized, and the conduction of the liquid flow channels in the first connector and the second connector is realized in the process of inserting. When the first connector and the second connector are separated, the locking convex portion enters the buffer channel to effectively release the pressure in the liquid flow pipeline, effectively preventing the explosion of the plug when it is separated, causing a large amount of liquid to flow out and safety hazards. When the first locking convex portion enters the buffer channel, the liquid flow path is already in a cutoff state, and the first connector and the second connector are still in a physical connection state, thereby avoiding the explosive separation of the first connector and the second connector during the separation process, and further causing danger.

[0017] By limiting the angles of the buffer channel and the main channel, when the first connector and the second connector are separated, the locking convex portion is effectively ensured to enter the buffer channel.

[0018] By providing the pressing portion on the outer periphery of the locking sleeve, it is convenient to insert and remove by applying external force through the pressing portion. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the blind plug connector of the first embodiment.

[0020] Figure 2 It is an enlarged schematic view of the locking sleeve of the first embodiment.

[0021] Figure 3The structure diagram of the locking sleeve of the first embodiment.

[0022] Figure 4 The structure diagram of the cross section of the first connector of the first embodiment.

[0023] Figure 5 The structure diagram of the cross section of the second connector of the first embodiment.

[0024] Figure 6 The structure diagram of the cross section of the blind plug connector before plugging of the first embodiment.

[0025] Figure 7 The structure diagram of the cross section of the blind plug connector after plugging of the first embodiment.

[0026] The first connector 1, the second connector 2, the annular track 11, the locking sleeve 3, the guide channel 31, the main channel 311, the buffer channel 312, the locking groove 313, the guide part 32, the head part 321, the end part 322, the inlet and outlet 314, the stop part 315, the guide surface 323, the pressing part 33, the first head part 15, the first pipe body 16, the first step 17, the closing part 19, the first valve 181, the first elastic element 182, the first sealing ring 183, the locking convex part 21, the second head part 22, the second pipe body 23, the first sleeve segment 221, the second sleeve segment 222, the first limiting part 223, the valve sleeve 26, the second limiting part 261, the valve sleeve 226, the partition plate 24, the valve rod 25, the second sealing ring 251, the second elastic element 27. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0028] It should be noted that, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head part", "tail part" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0029] In addition, the terms "first", "second", "third" and the like are only for description purposes, and cannot be understood as indicating or implying relative importance.

[0030] The utility model provides a kind of blind insertion connector, including first connector 1, second connector 2, the outer periphery of first connector 1 is equipped with annular track 11, locking sleeve 3 one end is arranged in annular track, locking sleeve 3 can rotate along annular track 11, locking sleeve 3 is provided with guide channel 31 along the circumferential direction interval, guide channel 31 is multiple groups, and interval is set along the outer periphery of locking sleeve. Guide channel 31 includes main channel 311 and buffer channel 312, main channel 311 and buffer channel 312 form "person" shape, main channel 311 end is equipped with locking groove 313, locking groove 313 is communicated with main channel 311, locking sleeve 3 end is equipped with guide portion 32, guide portion 32 includes head 321 and end 322, end 322 is located at the entrance and exit 314 of guide channel 31, head 321 and end 322 form guide surface 323, guide surface 323 is inclined or arc. The outer periphery of locking sleeve 3 is equipped with pressing portion 33. First connector 1 includes first head 15 and first pipe body 16, first step 17 is equipped between head 15 and pipe body 16, head 15 is equipped with closeout 19 relative to one end of pipe body 16, one side of closeout 19 is equipped with first valve 181, first elastic element 182 one end is arranged against first step 17, the other end is against first valve 181, first valve 181 is equipped with first sealing ring 183 in the circumferential direction, the outer periphery of first valve 181 is matched with closeout 19, when the elastic force of first elastic element 182 drives first valve 181 to be located in closed position, first sealing ring 183 on first valve 181 is sealed with closeout 19 and prevents liquid from flowing out, the liquid flow channel of first connector 1 is in cut-off state. When first valve 181 is extruded by external force, first elastic element 182 is compressed, when first valve 181 is away from closeout 19, liquid can form the channel of liquid flow from between first valve 181 and the lateral wall of head 15, and the liquid flow channel of first connector 1 is in on state.

[0031] The second connector 2 is provided with locking protrusions 21 on the outer periphery, which are arranged circumferentially along the second connector 2 and consistent with the number of guide channels 31. The locking protrusions 21 can slide along the guide portions 32 to the main channel entrance 314 and enter the main channel 311 through the main channel entrance 314; the locking protrusions 21 can slide along the main channel 311 to the entrance 314, and the locking protrusions 21 can also slide along the buffer channel 312 to the cutoff portion 315 or slide along the buffer channel 312 to the main channel 311. The second connector 2 includes a second head 22 and a second tube 23, the second head 22 includes a first sleeve segment 221 and a second sleeve segment 222, and a first limiting portion 223 is formed at the junction of the first sleeve segment 221 and the second sleeve segment 222. A valve sleeve 26 is arranged in the first sleeve segment 221, and a second limiting portion 261 is formed at the end of the valve sleeve 26. The second limiting portion 261 matches the first limiting portion 223 to prevent the valve sleeve 26 from coming out of the first sleeve segment 221. The valve sleeve 26 can move axially in the second head 22. A partition plate 24 with a through hole is arranged between the second head 22 and the second tube 23, and the liquid in the second tube 23 can enter the second head 22 through the through hole. A valve rod 25 is fixedly arranged on the partition plate 24, and the valve rod 25 is provided with a second sealing ring 251 circumferentially. The valve sleeve 26 is arranged on the outer periphery of the valve rod 25. A second elastic element 27 abuts against the partition plate 24 at one end and abuts against the valve sleeve 26 at the other end. When the second elastic element 27 is stretched under the action of the elastic force, the valve sleeve 26 is pushed to a closed position. At this time, a sealed connection is formed between the valve sleeve 26 and the valve rod 25, so that the liquid cannot flow between the valve sleeve 26 and the valve rod 25. The liquid flow channel of the second connector 2 is in a cutoff state. When the valve sleeve 26 is subjected to an external force, the valve sleeve 26 can move towards the partition plate 24, and at this time the second element 27 is compressed. When the valve sleeve 26 moves to a certain position, a gap is formed between the valve sleeve 26 and the valve rod 25. At this time, the liquid can flow between the valve sleeve 26 and the valve rod 25. The liquid flow channel of the second connector 2 is in a conductive state.

[0032] When the second connector 2 needs to be connected with the first connector 1, the second connector 2 is close to and contacts the first connector 1, the locking protrusion 21 contacts the head 321 and the guide surface 323 of the first connector 1, and the second connector is inserted with force, so that the locking protrusion 21 exerts pressure on the head 321 or the guide surface 323, the pressure has a circumferential component, so that the locking sleeve 3 rotates along the annular guide rail 11 until the locking protrusion 21 contacts the entrance 314 of the guide channel and enters the guide channel 31 from the entrance 314 of the guide channel, and the locking sleeve 3 continues to rotate, the locking protrusion 21 moves along the main channel 311 to the opposite end of the entrance 314 and enters the locking groove 313, and the first connector and the second connector are released, so that the locking protrusion 21 is limited in the locking groove 313 under the action of the first elastic element and the second elastic element 27, so that the connection and locking of the first head 15 and the second head 22 are realized. At this time, the first connector 1 and the second connector 2 form a liquid flow channel, so that the connection of the first connector 1 and the second connector 2 is realized.

[0033] When the connection between the second connector 2 and the first connector 1 needs to be released, the second connector 2 is pressed to make the locking protrusion 21 leave the locking groove 313 and enter the main channel 311, at this time, under the action of the first elastic element, the second elastic element and the liquid pressure in the pipe body, an axial repulsive force is formed between the first connector 1 and the second connector 2. So that the locking protrusion 21 exerts an external force on the edge of the main channel 311, the force has a circumferential component, so that the locking sleeve rotates along the annular rail, so that the locking protrusion quickly enters the buffer channel 312 from the main channel 311. Before the locking protrusion enters the buffer channel 312, the first valve 181 has been in sealing connection with the closed end 19 under the action of the first elastic element 182, and the valve sleeve 26 is in sealing connection with the valve rod 25 under the action of the second elastic element 27, at this time, the liquid channel in the first connector 1 and the second connector 2 has been disconnected, and the internal liquid pressure of the first connector 1 and the second connector 2 is effectively released. The first connector 1 and the second connector 2 are still in a physical connection state, so as to prevent the two connectors from being separated in an explosive manner, and further, the locking protrusion 21 is moved from the buffer channel 312 to the main channel 311 and then taken out from the entrance 314, so that the separation of the first connector and the second connector is realized.

[0034] It can be understood that the buffer channel 312 can also be provided as a plurality of channels connected with each other, and at least one of the buffer channels is provided with a cutoff portion 315, so that the locking protrusion 21 entering the buffer channel 312 can slide to the cutoff portion 315 from any one of the buffer channels 312.

[0035] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blind mate connector, characterized by, The utility model relates to a joint, which comprises a first connecting body (1), a second connecting body (2), and a locking sleeve (3) arranged on the outer periphery of the first connecting body (1) and rotatable along the circumference of the first connecting body (1), wherein the locking sleeve (3) is provided with a guide channel (31) along the circumference, the guide channel (31) comprises a main channel (311) provided with an entrance (314) at one end, the locking sleeve (3) is provided with a guide portion (32) at one end, the second connecting body (2) is provided with a locking protrusion (21) on the outer periphery, the locking protrusion (21) is slidable along the guide portion (32) to the entrance (314) of the main channel (311) and enters the main channel (311) through the entrance (314) of the main channel (311); the guide channel (31) further comprises a buffer channel (312) provided with a cutoff portion (315) at one end, and the locking protrusion (21) is slidable along the buffer channel (312) and / or the main channel (311) to reach the entrance (314) and / or the cutoff portion (315).

2. The blind mate connector of claim 1, wherein, The guide channel (31) is arranged in multiple groups and is arranged at intervals along the outer periphery of the locking sleeve.

3. The blind mate connector of claim 1, wherein, The first connecting body (1) is provided with an annular track (11) on the outer periphery, and one end of the locking sleeve (3) is arranged in the annular track (11).

4. The blind mate connector of claim 1, wherein, The guide portion (32) comprises a head portion (321) and an end portion (322), the end portion (322) is located at the entrance (314) of the guide channel, and a guide surface (323) is formed between the head portion (321) and the end portion (322), wherein the guide surface (323) is inclined or arc-shaped.

5. The blind mate connector of claim 1, wherein, At least one of the buffer channels is provided with a cutoff portion and / or the buffer channel (312) is multiple channels that are interconnected.

6. The blind mate connector of claim 1, wherein, One end of the guide channel (31) is connected to a locking groove (313), and the locking protrusion (21) can enter the locking groove (313) through the main channel to realize the connection and locking of the joint.

7. The blind mate connector of claim 1, wherein, The main channel (311) and the buffer channel (312) form a "chevron" shape.

8. The blind mate connector of claim 1, wherein, The included angle between the buffer channel (312) and the end face of the locking sleeve (3) is B, and the included angle between the main channel (311) and the end face of the locking sleeve (3) is A, wherein B > A.

9. The blind mate connector of claim 8, wherein, The included angle B is 75°-90°.

10. The blind mate connector of claim 1, wherein, When the locking protrusion (21) is located in the buffer channel (312), the liquid flow channels of the first connecting body (1) and the second connecting body (2) are in a cutoff state, respectively.

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