Separation-controllable pipeline connecting device

Abstract

The utility model discloses a controllable separation pipeline connecting device which comprises a front joint pipe and a rear joint pipe, a connecting structure is arranged between the front joint pipe and the rear joint pipe, the front joint pipe is provided with a front pipe hole and a rear pipe hole, one end of the rear joint pipe is inserted into the rear pipe hole, and the connecting structure comprises a first convex ring and a second convex ring. An elastic valve is arranged in the rear pipe hole, an ejector rod is arranged on the rear connector pipe, a second pipe hole which penetrates through the rear connector pipe and is communicated with the front pipe hole is formed between the rear connector pipe and the ejector rod, and through mechanical matching of the first protruding ring and the second protruding ring, quick disengagement can be achieved under a preset tension threshold value, and structural damage caused by accidental stress of a pipeline is avoided; and meanwhile, manual intervention is not needed for the separation action, compared with a traditional fracture type weak structure, the elastic valve automatically seals the rear pipe hole at the joint separation moment, medium leakage or backflow is prevented, dependence on an external valve or a spring reset mechanism is not needed, the response speed is higher, and the sealing reliability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline connecting accessory technical field especially, it relates to a controllable separation's pipeline connecting device. BACKGROUND

[0002] In the pipeline connecting technical field, the traditional mechanical connecting device adopts rigid connecting mode such as thread locking, buckle fixing to realize pipeline butt joint.For example, part of prior art realizes detachable connection between pipe bodies by setting thread sleeve ring, but its structure is damaged due to lack of overload protection mechanism when being pulled accidentally.In addition, the conventional connecting piece often leaks after separation due to lack of automatic closing structure, and additional valve or sealing cover is needed, which increases the complexity of operation.

[0003] In the prior art, to solve the problem of pipeline emergency separation, the existing scheme adopts a fracture type weak structure or a preset shear element to realize mechanical separation.However, such design has the following defects: the components need to be replaced manually after separation, and it is difficult to realize quick reset;On the other hand, the existing backflow prevention structure often uses an independent valve core or an elastic sealing ring, which needs to rely on gravity or spring reset after the pipe body is separated, and there is a risk of response delay and sealing failure.

[0004] The existing pipeline connecting device has a technical blank in the integrated design of separable function and leakproof performance, and it is difficult to meet the multiple requirements of quick release response and automatic closing after separation.

[0005] The utility model is made based on the above situation. UTILITY MODEL CONTENTS

[0006] The utility model overcomes the defects of the prior art, and provides a controllable separation's pipeline connecting device which is simple in structure, easy to manufacture, low in weight and capable of preventing leakage after separation.

[0007] The utility model is implemented by the following technical solutions:

[0008] A controllable separation's pipeline connecting device, comprising a front joint pipe and a rear joint pipe connected in front and back, a connecting structure is arranged between the front joint pipe and the rear joint pipe for connecting and fixing the two and enabling the front joint pipe and the rear joint pipe to be separated from each other when external force pulling exceeds a preset value, a front pipe hole and a rear pipe hole communicated with the front pipe hole are arranged on the front joint pipe, one end of the rear joint pipe is inserted into the rear pipe hole, the connecting structure comprises a first convex ring arranged on the outer wall of the rear joint pipe and a second convex ring arranged on the inner wall of the rear pipe hole and capable of cooperating with the first convex ring to limit the rear joint pipe from being pulled out, an elastic valve is arranged in the rear pipe hole and capable of closing the rear pipe hole when the rear joint pipe is pulled out, a jacking rod is arranged on the rear joint pipe and capable of being inserted into the rear pipe hole and pushing open the elastic valve, and a second pipe hole is arranged between the rear joint pipe and the jacking rod and communicated with the front pipe hole.

[0009] A detachable pipe connecting device with controllable separation as described above, the front joint pipe and the rear joint pipe are detachably connected with a signal emitting device capable of sending an alarm signal to a signal receiving terminal when the two are disconnected.

[0010] A detachable pipe connecting device with controllable separation as described above, the signal emitting device is provided with a switch capable of terminating the signal emission when pressed and sending an alarm signal when not pressed, the front joint pipe is provided with a slot for inserting the signal emitting device, the inner wall of the slot is provided with a through hole for the switch to extend into the rear pipe hole, the through hole is provided with a flexible diaphragm capable of limiting the liquid flow from the through hole into the slot, and when the front joint pipe and the rear joint pipe are connected, the top rod drives the flexible diaphragm to press the switch.

[0011] A detachable pipe connecting device with controllable separation as described above, the hole wall of the rear pipe hole is provided with a step structure, and the hole wall is further provided with a limiting ring capable of pressing the side of the elastic valve to the step structure to limit the elastic valve from being pulled out.

[0012] A detachable pipe connecting device with controllable separation as described above, the front joint pipe and the rear joint pipe are provided with a limiting structure for limiting the rear joint pipe from breaking the front joint pipe.

[0013] A detachable pipe connecting device with controllable separation as described above, the limiting structure includes a limiting slot provided on the outer wall of the rear joint pipe and opening forward, and the limiting structure further includes a limiting block provided on the hole wall of the rear pipe, and the rear side of the limiting block is provided with a plug capable of being inserted into the limiting slot.

[0014] A detachable pipe connecting device with controllable separation as described above, the limiting structure includes a limiting flange provided on the outer wall of the rear joint pipe, and the front end surface of the limiting flange is capable of abutting against the rear end surface of the front joint pipe.

[0015] A detachable pipe connecting device with controllable separation as described above, the front part of the outer wall of the front joint pipe is provided with a first barb structure for enhancing the connection between the joint and the pipe, and the rear part of the outer wall of the rear joint pipe is provided with a second barb structure for enhancing the connection between the joint and the pipe.

[0016] A detachable pipe connecting device with controllable separation as described above, the signal emitting device is provided with a protrusion facilitating the removal of the signal emitting device from the slot.

[0017] A detachable pipe connecting device with controllable separation as described above, the pipe connecting device is made of non-metallic material.

[0018] Compared with the prior art, the detachable pipe connecting device with controllable separation has the following advantages:

[0019] The utility model discloses a first convex ring and second convex ring's mechanical cooperation can realize quick uncoupling under presetting tension threshold value, avoid the structure damage caused by accidental stress to pipeline, and simultaneously, the separation action does not need manual intervention, compared with traditional fracture type weak structure, the scheme realizes nondestructive separation, and after separation, only needs to reset to be reusable, reduces maintenance cost. The elastic valve is closed after the joint separation instant, prevents medium from leaking or backflow, does not need to rely on external valve or spring reset mechanism, and the response speed is faster and the sealing reliability is higher. The design of the top rod and the second pipe hole opens the elastic valve under the connection state, ensures that the fluid continuously passes, and maintains the sealing property of the pipeline simultaneously, avoids the complex layout of the traditional split type backflow prevention structure. The device integrates the connection, separation and leakage prevention functions in single joint assembly, simplifies the overall structure of the pipeline system, and is suitable for space limited scenes.

[0020] Meanwhile, the device can also be used in postoperative drainage, and the front joint pipe and the rear joint pipe are connected with the insertion pipe and the external drainage pipe respectively. When the external drainage pipe is pulled too hard, the front joint pipe and the rear joint pipe are connected through the connecting structure, so that the front joint pipe and the rear joint pipe are easily separated under the external force, thereby preventing the insertion pipe from being pulled or pulled out, effectively reducing accidental extubation, having good safety performance, avoiding a large amount of binding and fixing, and reducing the pain of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0021] The specific implementation of the utility model will be further described below in combination with the drawings, and specifically:

[0022] Figure 1 It is the structural schematic diagram of the utility model;

[0023] Figure 2 It is the exploded schematic diagram of the utility model;

[0024] Figure 3 It is the sectional view schematic diagram of the utility model;

[0025] Figure 4 It is the sectional view schematic diagram of the front joint pipe in the utility model;

[0026] Figure 5 It is the sectional view schematic diagram of another embodiment of the utility model. DETAILED DESCRIPTION

[0027] The utility model will be further described below in combination with the drawings:

[0028] As Figures 1 to 5The illustrated controllable separation pipeline connecting device comprises a front joint pipe 1 and a rear joint pipe 2 connected in sequence, a connecting structure is arranged between the front joint pipe 1 and the rear joint pipe 2 for connecting and fixing the two pipes and enabling the front joint pipe 1 and the rear joint pipe 2 to be separated from each other when an external force pulling exceeds a preset value, the front joint pipe 1 is provided with a front pipe hole 11 and a rear pipe hole 12 communicating with the front pipe hole 11, one end of the rear joint pipe 2 is inserted into the rear pipe hole 12, the connecting structure comprises a first convex ring 31 arranged on the outer wall of the rear joint pipe 2 and a second convex ring 32 arranged on the inner wall of the rear pipe hole 12 and capable of cooperating with the first convex ring 31 to limit the separation of the rear joint pipe 2, an elastic valve 4 capable of closing the rear pipe hole 12 when the rear joint pipe 2 is pulled out is arranged in the rear pipe hole 12, the rear joint pipe 2 is provided with a jacking rod 21 capable of being inserted into the rear pipe hole 12 and pushing open the elastic valve 4, and a second pipe hole 22 penetrating through the rear joint pipe 2 and communicating with the front pipe hole 11 is arranged between the rear joint pipe 2 and the jacking rod 21.

[0029] The first convex ring 31 and the second convex ring 32 are mechanically matched, the quick separation under the preset pulling force threshold can be realized, the structure damage of the pipeline caused by accidental stress is avoided, manual intervention is not required in the separation operation, compared with the traditional fracture type weak structure, the non-destructive separation is realized, the pipeline can be reused after separation and resetting, and the maintenance cost is reduced. The elastic valve 4 automatically closes the rear pipe hole 12 at the moment of joint separation, prevents medium leakage or backflow, does not need to rely on an external valve or a spring resetting mechanism, has faster response speed and higher sealing reliability. The design of the jacking rod 21 and the second pipe hole 22 pushes open the elastic valve 4 in the connected state, ensures the continuous flow of fluid, maintains the sealing property of the pipeline, and avoids the complex layout of the traditional split type backflow prevention structure. The connecting, separating and leak-proof functions are integrated in the single joint assembly, the overall structure of the pipeline system is simplified, and the device is suitable for space limited scenes.

[0030] Meanwhile, the device can also be used in some postoperative drainage, the front joint pipe 1 and the rear joint pipe 2 are connected with the insertion pipe and the external drainage pipe respectively, when the external drainage pipe is pulled too hard, the front joint pipe 1 and the rear joint pipe 2 are easily separated due to the connection of the connecting structure, so that the insertion pipe is prevented from being pulled hard or pulled out, the accidental extubation is effectively reduced, the safety performance is good, a large amount of binding and fixing is avoided, and the pain of the patient is reduced.

[0031] Further, the first convex ring 31 and the front joint pipe 1 are in an integrated structure, and the second convex ring 32 and the rear joint pipe 2 are in an integrated structure.

[0032] The elastic valve 4 is a conventional anti-backflow film on the market, which can be the anti-backflow valve structure in the device for rapid placenta detection of the anti-backflow device with patent number CN216815567U and patent name.

[0033] In an embodiment, detachable connection between the front connector tube 1 and the rear connector tube 2 is provided with a signal emitting device 5 capable of sending an alarm signal to a signal receiving terminal when the two are disconnected. The signal receiving terminal can be a computer or an alarm system. The alarm information prompts the patient or medical staff for timely treatment. The information can be a flashing light or a buzzer. The signal emitting device 5 described above is a conventional micro signal emitting device on the market, which is built-in with an integrated chip, a battery and an antenna.

[0034] Specifically, the signal emitting device 5 is provided with a switch 51 capable of terminating the signal emission when pressed and sending an alarm signal when not pressed, the front connector tube 1 is provided with a slot 13 for inserting the signal emitting device 5, the inner wall of the slot 13 is provided with a through hole 131 for the switch 51 to extend into the rear tube hole 12, the through hole 131 is provided with a flexible diaphragm 6 capable of limiting the flow of liquid from the through hole 131 into the slot 13, and when the front connector tube 1 and the rear connector tube 2 are connected, the top rod 21 presses the flexible diaphragm 6 together with the switch 51. The switch can be a momentary switch or a pressure sensor. The flexible diaphragm 6 covers the aperture of the through hole 131, and the flexible diaphragm 6 can be connected to the slot wall of the slot 13 by heat sealing, of course, it can also be connected to the slot wall of the slot 13 by glue or other connection methods. The flexible diaphragm 6 can be a flexible silicone membrane or other diaphragm.

[0035] Further, the signal emitting device 5 is provided with a protrusion 52 for facilitating its removal from the slot 13, and the side wall of the switch 51 is a guide conical surface 510 for facilitating its insertion or exit from the through hole 131.

[0036] In an embodiment, the signal emitting device 5 can also be connected to the front connector tube 1 by a buckle structure or other connection methods.

[0037] In an embodiment, the hole wall of the rear tube hole 12 is provided with a step structure 14, and the hole wall is also provided with a limiting ring 7 capable of pressing the side of the elastic valve 4 against the step structure 14 to limit the disengagement of the elastic valve 4. The limiting ring 7 can be connected to the hole wall by heat sealing, of course, it can also be connected to the hole wall by glue or other connection methods, of course, the limiting ring 7 can also be an integral structure with the front connector tube 1, when the limiting ring 7 and the front connector tube 1 are a separate structure, it is easier to install the elastic valve 4, and the production efficiency is higher. The elastic valve 4 is pressed against the side wall of the top rod 21, thereby forming a leak-proof sealing structure.

[0038] In an embodiment, a limiting structure is arranged between the front joint pipe 1 and the rear joint pipe 2 to limit the rear joint pipe 2 from breaking the front joint pipe 1. Specifically, the limiting structure comprises a limiting slot 220 arranged on the outer wall of the rear joint pipe 2 and opening forward, and the limiting structure further comprises a limiting block 8 arranged on the wall of the rear pipe hole 12, the rear side of the limiting block 8 is provided with a pin 81 which can be inserted into the limiting slot 220. The limiting block 8 can be connected to the hole wall by heat melting, of course, it can also be connected to the hole wall by glue or other connection methods, the limiting block 8 and the pin 81 are integrated, the depth direction of the limiting slot 220 and the extension direction of the pin 81 are parallel to the axis of the front joint pipe 1, so that the front joint pipe 1 will not be broken outwardly when the pipe is inserted.

[0039] In an embodiment, the limiting structure comprises a limiting flange 82 arranged on the outer wall of the rear joint pipe 2, the front end surface of the limiting flange 82 can abut on the rear end surface of the front joint pipe 1, to prevent the front joint pipe 1 from being broken when the rear joint pipe 2 is inserted. The limiting flange 82 and the rear joint pipe 2 are integrated.

[0040] In an embodiment, a sealing ring 10 can be installed between the outer wall of the rear joint pipe 2 and the inner wall of the rear pipe hole 12 to further improve the sealing effect.

[0041] In an embodiment, the front part of the outer wall of the front joint pipe 1 is provided with a first barb structure 15 for enhancing the connection between the joint and the pipe, and the rear part of the outer wall of the rear joint pipe 2 is provided with a second barb structure 23 for enhancing the connection between the joint and the pipe. The barb structure realizes self-locking after the joint connection by mechanical engagement, prevents accidental disconnection when vibrating or being pulled by external force, enhances the fit of the sealing interface by the axial compression force of the barb structure, and reduces the risk of fluid or gas leakage.

[0042] In an embodiment, the pipe connecting device is made of non-metallic material. In some physical examinations, metal is not allowed, and the patient can carry the pipe connecting device into the examination room by removing the signal emitting device 5.

Claims

1. A controllable separation pipe connection device, characterized in that: The device includes a front connector tube (1) and a rear connector tube (2) connected front to back. A connecting structure is provided between the front connector tube (1) and the rear connector tube (2) to connect and fix them together, and to allow the front connector tube (1) and the rear connector tube (2) to detach from each other when pulled by an external force exceeding a preset value. The front connector tube (1) has a front tube hole (11) and a rear tube hole (12) communicating with the front tube hole (11). One end of the rear connector tube (2) is inserted into the rear tube hole (12). The connecting structure includes a first protruding ring (3) on the outer wall of the rear connector tube (2). 1) and a second protruding ring (32) provided on the inner wall of the rear tube hole (12) and capable of cooperating with the first protruding ring (31) to restrict the rear connector tube (2) from being dislodged. The rear tube hole (12) is provided with an elastic valve (4) that can close the rear tube hole (12) when the rear connector tube (2) is pulled out. The rear connector tube (2) is provided with a push rod (21) that can be inserted into the rear tube hole (12) and push the elastic valve (4) open. A second tube hole (22) is provided between the rear connector tube (2) and the push rod (21) that passes through the rear connector tube (2) and communicates with the front tube hole (11).

2. The controllable separation pipe connection device according to claim 1, characterized in that: A signal transmitting device (5) is detachably connected between the front connector tube (1) and the rear connector tube (2) and can send an alarm signal to the signal receiving terminal when the two are disconnected.

3. The controllable separation pipe connection device according to claim 2, characterized in that: The signal transmitting device (5) is equipped with a switch (51) that can terminate signal transmission when pressed and issue an alarm signal when not pressed. The front connector tube (1) is equipped with a slot (13) for inserting the signal transmitting device (5). The inner wall of the slot (13) is equipped with a through hole (131) for the switch (51) to extend into the rear tube hole (12). The opening of the through hole (131) is equipped with a flexible diaphragm (6) that can restrict liquid from flowing into the slot (13) from the through hole (131). When the front connector tube (1) and the rear connector tube (2) are connected, the push rod (21) drives the flexible diaphragm (6) to press the switch (51) together.

4. The controllable separation pipe connection device according to claim 3, characterized in that: The rear tube hole (12) has a stepped structure (14) on its wall, and a limiting ring (7) is provided on the wall to press the side of the elastic valve (4) against the stepped structure (14) to restrict the elastic valve (4) from falling out.

5. A controllable separation pipe connection device according to any one of claims 1-4, characterized in that: A limiting structure is provided between the front connector tube (1) and the rear connector tube (2) to prevent the rear connector tube (2) from breaking through the front connector tube (1).

6. The controllable separation pipe connection device according to claim 5, characterized in that: The limiting structure includes a limiting groove (220) on the outer wall of the rear connector pipe (2) and opening forward. The limiting structure also includes a limiting block (8) on the wall of the rear pipe hole (12). The limiting block (8) has a pin (81) on its rear side that can be inserted into the limiting groove (220).

7. The controllable separation pipe connection device according to claim 5, characterized in that: The limiting structure includes a limiting flange (82) provided on the outer side wall of the rear connector tube (2), and the front end face of the limiting flange (82) can abut against the rear end face of the front connector tube (1).

8. A controllable separation pipe connection device according to any one of claims 1-4, characterized in that: The front outer wall of the front connector pipe (1) is provided with a first barb structure (15) for reinforcing the connection between the connector and the pipe, and the rear outer wall of the rear connector pipe (2) is provided with a second barb structure (23) for reinforcing the connection between the connector and the pipe.

9. The controllable separation pipe connection device according to claim 3, characterized in that: The signal transmitting device (5) is provided with a protrusion (52) to facilitate its removal from the slot (13).

10. The controllable separation pipe connection device according to claim 1, characterized in that: The pipe connection device is made of non-metallic materials.

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