Anti-leakage pipeline connecting device

Abstract

The utility model relates to an anti-leakage pipeline connecting device, which belongs to the technical field of pipeline connection and comprises a bottom plate and two groups of connecting structures arranged at the top of the bottom plate, and sealing structures used for performing tight anti-leakage treatment on the joint of two pipelines are arranged outside the two groups of connecting structures. The sealing structure comprises a corrugated pipe arranged outside the two connecting structures, and an annular air bag is fixedly installed in the corrugated pipe. According to the anti-leakage pipeline connecting device, a pull block is manually pulled to drive a plug rod and a plug plate to move outwards in a piston barrel, at the moment, negative pressure is formed in the piston barrel, external air enters the piston barrel through an air inlet pipe, the plug plate and the plug rod move inwards to extrude air in the piston barrel, the air enters an annular air bag through a conveying pipe, and the annular air bag is expanded; the sealing ring is tightly attached to the outer wall of the pipeline connecting position, a reliable sealing structure is formed, medium leakage is effectively prevented, and the advantage of being good in sealing performance is achieved.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, specifically to a leak-proof pipe connection device. Background Technology

[0002] A pipeline is a device made up of pipes, pipe fittings, valves, etc., used to transport gases, liquids, and fluids containing solid particles. Usually, the fluid is pressurized by blowers, compressors, pumps, boilers, etc., and then flows from the high-pressure point to the low-pressure point in the pipeline. It can also be transported by the fluid's own pressure or gravity. Pipelines have a wide range of uses, mainly in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering, and various industrial installations. Water conservancy and hydropower pipelines are specifically designed for use in the water conservancy and hydropower industries.

[0003] A leak-proof pipe connection device is needed during the pipe connection process. Chinese utility model patent with announcement number CN221592094U discloses a pipe connection device, including a connection mechanism. Both ends of the connection mechanism are provided with connection seats. A through-hole is opened in the middle of the connection seat. Multiple connection grooves of different sizes are opened on the side of the connection seat away from the connection mechanism and on the periphery of the through-hole. A limiting mechanism is provided between two connection seats. The two limiting mechanisms are respectively located on the upper and lower sides of the connection mechanism. The two connection seats are connected and fixed by the limiting mechanism. A clamping mechanism is provided on the outside of the connection seat.

[0004] However, the connection method of this utility model pipe connection device is prone to sealing failure during long-term use due to factors such as medium corrosion, pipe vibration and temperature changes. Therefore, a leak-proof pipe connection device is proposed to solve the above-mentioned problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a leak-proof pipe connection device with advantages such as good sealing performance and strong practicality. It solves the problem that existing pipe connection devices are prone to sealing failure during long-term use due to factors such as medium corrosion, pipe vibration, and temperature changes.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A leak-proof pipe connection device includes a base plate and two sets of connection structures disposed on the top of the base plate. The two sets of connection structures are provided with a sealing structure for tightly preventing leakage at the connection of the two pipes.

[0008] The sealing structure includes a bellows disposed outside the two connecting structures. An annular airbag is fixedly installed inside the bellows. A piston cylinder is fixedly connected to the outside of the bellows. A delivery pipe is fixedly connected between the piston cylinder and the annular airbag. An air inlet pipe is fixedly connected to the outside of the piston cylinder. An inflation structure extending to the outside of the piston cylinder is disposed inside the piston cylinder.

[0009] Furthermore, the inflation structure includes a stopper plate slidably connected inside the piston cylinder, a stopper rod fixedly connected to the outside of the stopper plate, a pull block fixedly connected to the end of the stopper rod away from the stopper plate, and a return spring fixedly connected between the piston cylinder and the pull block.

[0010] Furthermore, the return spring is wrapped around the outside of the piston rod, which is slidably connected to the inside of the piston cylinder and extends to its outside.

[0011] Furthermore, the outer diameter of the stopper plate is adapted to the inner diameter of the piston cylinder, and a venting valve is fixedly connected to the top of the piston cylinder.

[0012] Furthermore, the connection structure includes a first clamping plate disposed on the top of the base plate, a second clamping plate hinged to the top of the first clamping plate, and two connecting blocks fixedly connected to the outside of both the first and second clamping plates, with connecting bolts rotatably connected between adjacent connecting blocks.

[0013] Furthermore, both the first clamping plate and the second clamping plate are semi-circular rings, and anti-slip rubber pads are fixedly installed inside both the first clamping plate and the second clamping plate.

[0014] Furthermore, the two sets of connection structures are distributed at equal intervals on the top of the base plate, and the corrugated pipe is sleeved on the outside of the two sets of first and second clamping plates, with the middle part of the corrugated pipe located outside the connection between the two pipes.

[0015] Furthermore, the base plate is provided with an adjustment component for adjusting the spacing between the two connecting structures. The adjustment component includes a bidirectional screw that is rotatably connected to the inside of the base plate and extends to its outside. Moving blocks are threaded to both the left and right sides of the outside of the bidirectional screw. A knob is fixedly connected to the end of the bidirectional screw away from the base plate.

[0016] Furthermore, the two sets of connection structures are symmetrically fixedly connected to the top of the two moving blocks, and a bearing adapted to the bidirectional screw is fixedly installed inside the base plate.

[0017] Furthermore, the bottom of the movable block is fixedly connected to a slider extending into the interior of the base plate, and the interior of the base plate is provided with a sliding groove that matches the slider, and the slider and the sliding groove are slidably connected.

[0018] Compared with the prior art, the present invention provides a leak-proof pipe connection device, which has the following advantages:

[0019] 1. This leak-proof pipe connection device, when manually pulled, causes the stopper rod and stopper plate to move outward inside the piston cylinder. At this time, a negative pressure is formed inside the piston cylinder, and outside air enters the piston cylinder through the air inlet pipe. Under the elastic force of the return spring, the stopper plate and stopper rod move inward, compressing the air inside the piston cylinder. The air enters the annular air bladder through the delivery pipe, causing the annular air bladder to expand and tightly fit against the outer wall of the pipe connection, forming a reliable sealing structure, effectively preventing media leakage, and achieving the advantage of good sealing performance.

[0020] 2. This leak-proof pipe connection device, by setting an adjustment component, makes the spacing between the two sets of connection structures adjustable, which can adapt to the connection requirements of pipes of different lengths. The expansion and contraction of the corrugated pipe can adapt to the axial displacement of the pipe caused by factors such as temperature changes and vibration, avoiding the sealing failure problem caused by pipe displacement. It is suitable for various complex working environments and has the advantage of strong practicality. Attached Figure Description

[0021] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0022] Figure 2 This is a three-dimensional structural view of the base plate and connecting structure of this utility model;

[0023] Figure 3 This is a three-dimensional view of the sealing structure of this utility model;

[0024] Figure 4 This is a three-dimensional cross-sectional view of the piston cylinder of this utility model.

[0025] In the diagram: 1. Base plate; 2. Connecting structure; 21. First clamping plate; 22. Second clamping plate; 23. Connecting block; 24. Connecting bolt; 3. Sealing structure; 31. Bellows; 32. Annular airbag; 33. Piston cylinder; 34. Delivery pipe; 35. Inlet pipe; 36. Plug plate; 37. Plug rod; 38. Return spring; 39. Pull block; 310. Air release valve; 4. Adjusting assembly; 41. Two-way screw; 42. Moving block; 43. Knob. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 4 This embodiment of a leak-proof pipe connection device includes a base plate 1 and two sets of connection structures 2 disposed on the top of the base plate 1. The two sets of connection structures 2 are provided with a sealing structure 3 for tightly preventing leakage at the connection of the two pipes. The sealing structure 3 includes a corrugated pipe 31 disposed outside the two connection structures 2. An annular airbag 32 is fixedly installed inside the corrugated pipe 31. A piston cylinder 33 is fixedly connected to the outside of the corrugated pipe 31. A delivery pipe 34 is fixedly connected between the piston cylinder 33 and the annular airbag 32. An air inlet pipe 35 is fixedly connected to the outside of the piston cylinder 33. An inflation structure extending to the outside of the piston cylinder 33 is disposed inside the piston cylinder 33.

[0028] The inflation structure includes a stopper plate 36 slidably connected inside the piston cylinder 33, a stopper rod 37 fixedly connected to the outside of the stopper plate 36, and a pull block 39 fixedly connected to the end of the stopper rod 37 away from the stopper plate 36. A return spring 38 is fixedly connected between the piston cylinder 33 and the pull block 39. By manually pulling the pull block 39, the stopper rod 37 and the stopper plate 36 move outward inside the piston cylinder 33, creating a negative pressure inside the piston cylinder 33, allowing outside air to enter the piston cylinder 33 through the air inlet pipe 35. Releasing the pull block 39 causes the stopper plate 36 and the stopper rod 37 to move inward under the elastic force of the return spring 38, compressing the air inside the piston cylinder 33. The air then enters the annular air bladder 32 through the delivery pipe 34, causing the annular air bladder 32 to inflate. The pulling and releasing of the pull block 39 is repeated until the annular air bladder 32 inflates tightly against the outer wall of the connection between the two pipes, forming a reliable seal to prevent media leakage.

[0029] Specifically, the return spring 38 is wrapped around the outside of the stopper rod 37, which is slidably connected to the inside of the piston cylinder 33 and extends to its outside. The outer diameter of the stopper plate 36 is matched with the inner diameter of the piston cylinder 33, and the top of the piston cylinder 33 is fixedly connected to a vent valve 310. When it is necessary to disassemble the pipeline, the vent valve 310 is opened to release the air in the annular air bladder 32, causing the annular air bladder 32 to contract.

[0030] Please see Figures 1 to 2 In this embodiment, the connecting structure 2 includes a first clamping plate 21 disposed on the top of the base plate 1, a second clamping plate 22 hinged to the top of the first clamping plate 21, and two connecting blocks 23 fixedly connected to the outside of both the first clamping plate 21 and the second clamping plate 22, and connecting bolts 24 rotatably connecting adjacent two connecting blocks 23.

[0031] Both the first clamping plate 21 and the second clamping plate 22 are semi-circular rings, and anti-slip rubber pads are fixedly installed inside both clamping plates 21 and 22. Two sets of connecting structures 2 are distributed at equal intervals on the top of the base plate 1. A corrugated pipe 31 is sleeved on the outside of the two sets of clamping plates 21 and 22, with the middle of the corrugated pipe 31 located outside the connection point of the two pipes. By setting anti-slip rubber pads inside the first clamping plates 21 and 22, the pipes are ensured not to slip when clamped, improving the reliability of the connection.

[0032] Please see Figures 1 to 2 In this embodiment, the base plate 1 is internally provided with an adjustment assembly 4 for adjusting the spacing between the two connecting structures 2. The adjustment assembly 4 includes a bidirectional screw 41 rotatably connected to the inside of the base plate 1 and extending to its outside. Moving blocks 42 are threadedly connected to both the left and right sides of the bidirectional screw 41. A knob 43 is fixedly connected to the end of the bidirectional screw 41 away from the base plate 1. By rotating the knob 43, the bidirectional screw 41 is rotated. Since the thread directions on the left and right sides of the bidirectional screw 41 are opposite, the two moving blocks 42 will move towards or away from each other along the bidirectional screw 41, thereby adjusting the spacing between the two sets of connecting structures 2, so that the connection point of the two pipes is in a suitable position, and the middle part of the bellows 31 is located outside the connection point of the two pipes.

[0033] Two sets of connecting structures are symmetrically fixedly connected to the top of the two moving blocks 42. The base plate 1 has a bearing adapted to the bidirectional screw 41 fixedly installed inside. The bottom of the moving block 42 is fixedly connected to a slider extending into the base plate 1. The base plate 1 has a groove adapted to the slider inside, and the slider and the groove are slidably connected.

[0034] The working principle of the above embodiments is as follows:

[0035] In use, place the two pipes to be connected on the two sets of first clamping plates 21 respectively, close the second clamping plate 22, and rotate the connecting bolt 24 to lock the first clamping plate 21 and the second clamping plate 22 to fix the pipes. By rotating the knob 43, the bidirectional screw 41 is driven to rotate. Because the threads on both sides of the bidirectional screw 41 are opposite, the two moving blocks 42 move towards or away from each other along the bidirectional screw 41, adjusting the distance between the two sets of connecting structures 2 so that the middle of the bellows 31 is located outside the connection between the two pipes. By manually pulling the pull block 39, the stopper rod 37 and the stopper plate 36 move outward inside the piston cylinder 33, creating a negative pressure inside the piston cylinder 33. Outside air enters the piston cylinder 33 through the air inlet pipe 35, and the stopper plate 36 and the stopper rod 37 move inward, compressing the air inside the piston cylinder 33. The air enters the annular airbag 32 through the delivery pipe 34, causing it to expand. Repeat pulling and releasing the pull block 39 until the annular airbag 32 is tightly fitted against the outer wall of the connection between the two pipes, forming a seal. When deflating and disassembling the annular airbag 32, open the vent valve 310 to release the air inside the annular airbag 32, causing it to contract. Loosen the connecting bolt 24, open the second clamp 22, and remove the pipe.

[0036] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0037] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak-proof pipe connection device, characterized in that: It includes a base plate (1) and two sets of connecting structures (2) set on the top of the base plate (1). The two sets of connecting structures (2) are provided with a sealing structure (3) for tightly preventing leakage at the connection of the two pipes. The sealing structure (3) includes a bellows (31) disposed outside the two connecting structures (2). An annular airbag (32) is fixedly installed inside the bellows (31). A piston cylinder (33) is fixedly connected to the outside of the bellows (31). A delivery pipe (34) is fixedly connected between the piston cylinder (33) and the annular airbag (32). An air inlet pipe (35) is fixedly connected to the outside of the piston cylinder (33). An inflation structure extending to the outside of the piston cylinder (33) is provided inside the piston cylinder (33).

2. The anti-leakage pipe connection device according to claim 1, characterized in that: The inflation structure includes a stopper plate (36) slidably connected inside the piston cylinder (33), a stopper rod (37) fixedly connected to the outside of the stopper plate (36), a pull block (39) fixedly connected to the end of the stopper rod (37) away from the stopper plate (36), and a return spring (38) fixedly connected between the piston cylinder (33) and the pull block (39).

3. The anti-leakage pipe connection device according to claim 2, characterized in that: The return spring (38) is connected around the outside of the piston rod (37), which is slidably connected to the inside of the piston cylinder (33) and extends to its outside.

4. The anti-leakage pipe connection device according to claim 2, characterized in that: The outer diameter of the stopper plate (36) is adapted to the inner diameter of the piston cylinder (33), and the top of the piston cylinder (33) is fixedly connected to a vent valve (310).

5. The anti-leakage pipe connection device according to claim 1, characterized in that: The connection structure (2) includes a first clamping plate (21) disposed on the top of the base plate (1), a second clamping plate (22) is hinged to the top of the first clamping plate (21), and two connecting blocks (23) are fixedly connected to the outside of the first clamping plate (21) and the second clamping plate (22), and connecting bolts (24) are rotatably connected between two adjacent connecting blocks (23).

6. The anti-leakage pipe connection device according to claim 5, characterized in that: The first clamping plate (21) and the second clamping plate (22) are both semi-circular rings, and anti-slip rubber pads are fixedly installed inside the first clamping plate (21) and the second clamping plate (22).

7. A leak-proof pipe connection device according to claim 5, characterized in that: The two sets of connection structures (2) are distributed at equal intervals on the top of the base plate (1). The corrugated pipe (31) is sleeved on the outside of the two sets of first clamping plates (21) and second clamping plates (22). The middle part of the corrugated pipe (31) is located outside the connection between the two pipes.

8. The anti-leakage pipe connection device according to claim 1, characterized in that: The base plate (1) is provided with an adjustment component (4) for adjusting the distance between the two connecting structures (2). The adjustment component (4) includes a bidirectional screw (41) rotatably connected to the inside of the base plate (1) and extending to the outside of it. Moving blocks (42) are threadedly connected to the left and right sides of the outside of the bidirectional screw (41). A knob (43) is fixedly connected to the end of the bidirectional screw (41) away from the base plate (1).

9. A leak-proof pipe connection device according to claim 8, characterized in that: The two sets of connection structures (2) are fixedly connected to the top of the two moving blocks (42) in a symmetrical manner from left to right. The bottom plate (1) is fixedly installed with a bearing that is compatible with the bidirectional screw (41).

10. A leak-proof pipe connection device according to claim 8, characterized in that: The bottom of the movable block (42) is fixedly connected to a slider extending into the interior of the base plate (1). The interior of the base plate (1) is provided with a sliding groove that matches the slider. The slider and the sliding groove are slidably connected.

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