A quick connecting device for pipeline flanges

Abstract

This invention discloses a quick-connect device for pipe flanges, relating to the field of pipe connection technology. The quick-connect device includes a first sealing cap, one end of which is connected to a hinged rod. The front and rear ends of the outer wall of the hinged rod extend to the outside of the first sealing cap. A second sealing cap is hinged to the front and rear outer walls of the hinged rod. A first connecting block is fixedly connected to the right side of the second sealing cap, and a second connecting block is fixedly connected to the right side of the outer wall of the first sealing cap. The lower surface of the first connecting block contacts the upper surface of the second connecting block. Sealing rubber sheets are fixedly connected to the middle of the inner walls of both the first and second sealing caps. This quick-connect device, by incorporating a closing mechanism, allows workers sufficient time to consider defensive actions before actually opening the first and second sealing caps, preventing injury from hasty opening.

Description

Technical Field

[0001] This invention relates to the field of pipeline connection technology, specifically to a quick-connect device for pipeline flanges. Background Technology

[0002] Pipeline transportation is the optimal choice for material transfer in the petrochemical industry due to its high continuity and transport capacity. However, pipeline safety and the stability of connection points are limiting factors. Leaks at pipeline connections can lead to incalculable environmental pollution and economic losses.

[0003] Traditional flange connections typically use multiple bolts, resulting in slow connection speeds and high technical difficulty. The flange face requires manual positioning during connection. This method has disadvantages such as slow connection speed, high labor intensity for operators, and time and effort, making it impossible to quickly connect pipe flanges.

[0004] In response to the above situation, a device is needed to enable quick connection of pipe flanges. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a quick-connect device for pipe flanges, achieving the purpose of rapid connection of pipe flanges.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a quick-connect device for pipe flanges, comprising a first sealing cover, a hinge rod inserted into one end of the first sealing cover, the front and rear ends of the outer wall of the hinge rod extending to the outside of the first sealing cover, a second sealing cover hinged to the front and rear outer walls of the hinge rod, a first connecting block fixedly connected to the right side of the second sealing cover, a second connecting block fixedly connected to the right side of the outer wall of the first sealing cover, the lower surface of the first connecting block contacting the upper surface of the second connecting block, sealing rubber sheets fixedly connected to the middle of the inner wall of the first sealing cover and the middle of the inner wall of the second sealing cover, pressure blocks slidably connected to the inner walls of the first and second sealing covers, a compression mechanism provided inside the first and second sealing covers, and a closing mechanism provided inside the second connecting block;

[0007] The extrusion mechanism includes a fixing component and an extrusion block on the fixing component. The upper end of the extrusion block inside the first sealing cover extends through the first sealing cover to the upper side of the first sealing cover. The lower end of the extrusion block inside the second sealing cover extends through the second sealing cover to the lower side of the second sealing cover. The two extrusion blocks are in contact, and the extrusion blocks can move in an arc-shaped trajectory.

[0008] The closing mechanism includes a connecting component and a plug on the connecting component, the plug being movable up and down.

[0009] Preferably, the fixing component includes an air chamber, which is an arc-shaped cavity formed inside the first sealing cover and the second sealing cover. The two ends of the air chamber are connected to the outer sides of the first sealing cover and the second sealing cover. A limiting block is fixedly connected to the inner wall of the air chamber. The inner wall of the air chamber is slidably connected to the outer wall of the extrusion block. The width of the middle part of the extrusion block is smaller than the width of the two ends of the extrusion block. The limiting block is located in the middle of the extrusion block. A circular hole is formed on the side wall of the air chamber near the pressure block. An air tube is slidably connected to the inner wall of the circular hole. A push rod is inserted into the inner wall of the air tube. One end of the push rod extends through the air tube to the outer side of the air tube and is fixedly connected to the outer wall of the pressure block.

[0010] Preferably, the connecting assembly includes an installation tube, the upper end of which is fixedly connected to the lower side of the second connecting block. The first and second connecting blocks are provided with insertion holes, the interior of which communicates with the interior of the installation tube. A spring is fixedly connected to the bottom of the inner wall of the installation tube, and an insertion block is fixedly connected to the upper end of the spring. The outer wall of the insertion block contacts the inner wall of the installation tube. A threaded rod is threadedly connected to the inner wall of the insertion hole on the first connecting block, and a rubber head is fixedly connected to the lower end of the threaded rod. The lower surface of the rubber head contacts the upper surface of the insertion block.

[0011] Preferably, the first sealing cover has a cavity inside the hinge rod side, and the upper and lower sides of the cavity are connected to the outside of the first sealing cover. A rod is inserted into the cavity, and the upper end of the rod is fixedly connected to the lower side of the outer wall of the second sealing cover.

[0012] Preferably, both the first and second sealing covers are provided with two pressure blocks inside, and the two pressure blocks are inclined on the side that is close to each other, and the side of the pressure blocks that is close to each other covers the upper side of the sealing rubber sheet.

[0013] Preferably, the air cavity is filled with high-pressure gas, and the first sealing cover and the second sealing cover, when closed, form a cylindrical structure with a large inner diameter in the middle and a small inner diameter at both ends.

[0014] This invention provides a quick-connect device for pipe flanges. It has the following advantages:

[0015] 1. This quick-connect pipe flange device achieves a fast and stable connection of pipe flanges by incorporating a first sealing cover, a second sealing cover, and a pressure block, thus ensuring the pipe connection speed.

[0016] 2. This quick-connect pipe flange device, with its cavity and insert rod, prevents the device from opening too quickly, thus avoiding the rapid leakage of toxic substances from inside the pipe and ensuring the safety of construction personnel.

[0017] 3. This quick-connect pipe flange device is equipped with a compression mechanism, which increases the connection friction between the device and the flange during connection, reduces the possibility of movement between the device and the flange, and avoids unstable connection.

[0018] 4. This quick-connect pipe flange device, with its closure mechanism, allows workers sufficient time to think defensively before actually opening the first and second sealing covers, thus preventing injury from rashly opening them. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the mounting tube of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the air cavity in this invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the first sealing cap of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the first sealing cap of the present invention;

[0024] Figure 6 For the present invention Figure 4 A magnified structural diagram of A in the middle.

[0025] In the figure: 1 First sealing cover, 2 Hinge rod, 3 Second sealing cover, 4 First connecting block, 5 Second connecting block, 6 Sealing rubber sheet, 7 Pressure block, 8 Extrusion mechanism, 9 Closing mechanism, 10 Cavity, 11 Insert rod, 801 Air chamber, 802 Limiting block, 803 Extrusion block, 804 Air pipe, 805 Push rod, 901 Mounting tube, 902 Spring, 903 Insert block, 904 Threaded rod, 905 Rubber head. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0028] Please see Figure 1-6This invention provides a technical solution: a quick connection device for pipe flanges, including a first sealing cover 1, a hinge rod 2 inserted into one end of the first sealing cover 1, the front and rear ends of the outer wall of the hinge rod 2 extending to the outside of the first sealing cover 1, a second sealing cover 3 hinged to the front and rear outer walls of the hinge rod 2, a first connecting block 4 fixedly connected to the right side of the second sealing cover 3, a second connecting block 5 fixedly connected to the right side of the outer wall of the first sealing cover 1, the lower surface of the first connecting block 4 contacting the upper surface of the second connecting block 5, a sealing rubber sheet 6 fixedly connected to the middle of the inner wall of the first sealing cover 1 and the middle of the inner wall of the second sealing cover 3, a pressure block 7 slidably connected to the inner walls of the first sealing cover 1 and the second sealing cover 3, two pressure blocks 7 provided inside the first sealing cover 1 and the second sealing cover 3, the sides of the two pressure blocks 7 that are close to each other being inclined, and the sides of the pressure blocks 7 that are close to each other covering the upper side of the sealing rubber sheet 6. Both the sealing cap 1 and the second sealing cap 3 are equipped with a pressing mechanism 8, and the second connecting block 5 is equipped with a closing mechanism 9. The first sealing cap 1 has a cavity 10 inside on one side of the hinge rod 2. The upper and lower sides of the cavity 10 are connected to the outside of the first sealing cap 1. An insert rod 11 is inserted into the cavity 10. The upper end of the insert rod 11 is fixedly connected to the lower side of the outer wall of the second sealing cap 3. The pressing mechanism 8 includes a fixing component and a pressing block 803 on the fixing component. The upper end of the pressing block 803 inside the first sealing cap 1 passes through the first sealing cap 1 and extends to the upper side of the first sealing cap 1. The lower end of the pressing block 803 inside the second sealing cap 3 passes through the second sealing cap 3 and extends to the lower side of the second sealing cap 3. The two pressing blocks 803 are in contact and can move in an arc trajectory. The closing mechanism 9 includes a connecting component and a block 903 on the connecting component. The block 903 can move up and down.

[0029] In use, first assemble the flanges of the two pipes together, then place the upper side of the first sealing cover 1 on the lower side of the flange, so that the upper side of the sealing rubber sheet 6 fits against the flange connection. Then, deflect the second sealing cover 3 so that the first sealing cover 1 and the second sealing cover 3 close together to fix the flange. At this time, the first sealing cover 1 and the second sealing cover 3 form a cylinder, with the inner walls of both ends fitting against the pipe surface. The middle part has a sealing hole composed of pressure blocks 7 to seal the gap between the flanges. Then, insert the bolt into the hole on the first connecting block 4 and rotate the bolt to make the bolt enter the interior of the second connecting block 5. At this time, the first sealing cover 1 and the second sealing cover 3 can be fixed to achieve the purpose of connecting the flanges.

[0030] During the closing process of the first sealing cover 1 and the second sealing cover 3, the insert rod 11 will be inserted into the cavity 10, allowing the gas inside the cavity 10 to be discharged from its lower side. After use, simply remove the bolts, and the first sealing cover 1 and the second sealing cover 3 can be separated. During the deflection of the second sealing cover 3, the cavity 10 will be gradually pulled out of the insert rod 11. Since the lower opening of the cavity 10 is small, the speed at which the insert rod 11 is pulled out of the cavity 10 is limited, thereby preventing the first sealing cover 1 and the second sealing cover 3 from opening too quickly, giving the staff enough time to observe the condition of the flange connection, and avoiding sudden opening of internal pressure or toxic substances that could threaten personnel safety.

[0031] The fixing assembly includes an air chamber 801, which is filled with high-pressure gas. The first sealing cover 1 and the second sealing cover 3, when closed, form a cylindrical structure with a larger inner diameter in the middle and smaller inner diameters at both ends. The air chamber 801 is an arc-shaped cavity formed inside the first sealing cover 1 and the second sealing cover 3. Both ends of the air chamber 801 are connected to the outer sides of the first sealing cover 1 and the second sealing cover 3. Limiting blocks 802 are fixedly connected to the inner wall of the air chamber 801. The compression block 803 is slidably connected to the outer wall of the compression block 803. The width of the middle part of the compression block 803 is smaller than the width of the two ends of the compression block 803. The limiting block 802 is located in the middle of the compression block 803. A round hole is opened on the side wall of the air chamber 801 near the pressure block 7. An air pipe 804 is slidably connected to the inner wall of the round hole. A push rod 805 is inserted into the inner wall of the air pipe 804. One end of the push rod 805 passes through the air pipe 804 and extends to the outside of the air pipe 804 and is fixedly connected to the outer wall of the pressure block 7.

[0032] By setting the extrusion mechanism 8 to close the first sealing cover 1 and the second sealing cover 3, the extrusion blocks 803 press against each other, causing the extrusion blocks 803 to move into the air chamber 801, compressing the gas inside the air chamber 801. This gas then pushes the air pipe 804 and the push rod 805 outwards from the air chamber 801, thereby converting the air pressure into the pushing force of the push rod 805 to push the pressure block 7, causing the pressure block 7 to close. This pressure block 7 then presses against the surface of the flange, thereby increasing the friction between the pressure block 7 and the flange and increasing the connection stability of the device.

[0033] The connecting assembly includes an installation tube 901, the upper end of which is fixedly connected to the lower side of the second connecting block 5. The first connecting block 4 and the second connecting block 5 are provided with insertion holes, the interior of which is connected to the interior of the installation tube 901. A spring 902 is fixedly connected to the bottom of the inner wall of the installation tube 901, and an insertion block 903 is fixedly connected to the upper end of the spring 902. The outer wall of the insertion block 903 is in contact with the inner wall of the installation tube 901. A threaded rod 904 is threadedly connected to the inner wall of the insertion hole on the first connecting block 4. A rubber head 905 is fixedly connected to the lower end of the threaded rod 904, and the lower surface of the rubber head 905 is in contact with the upper surface of the insertion block 903.

[0034] Before using this device, the threaded rod 904 and rubber head 905 need to be removed before the bolt can be inserted into the socket. After use, the bolts on the first connecting block 4 and the second connecting block 5 need to be removed. At this time, since the spring 902 is in a compressed state, after the bolt is removed, the spring 902 will rebound, causing the plug 903 to rise and get stuck between the first connecting block 4 and the second connecting block 5. The first sealing cover 1 and the second sealing cover 3 still cannot be opened. The threaded rod 904 and rubber head 905 need to be screwed back into the socket. The threaded rod 904 will drive the rubber head 905 to press the plug 903 downward. Since the rubber head 905 is a soft structure, it can support the opening of the first sealing cover 1 and the second sealing cover 3 through deformation. This gives the operator enough time to think defensively before actually opening the first sealing cover 1 and the second sealing cover 3, avoiding injury from rashly opening the first sealing cover 1 and the second sealing cover 3.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A quick-connect device for pipe flanges, comprising a first sealing cover (1), characterized in that: A hinge rod (2) is inserted into one end of the first sealing cover (1). The front end and rear end of the outer wall of the hinge rod (2) extend to the outside of the first sealing cover (1). The front and rear outer walls of the hinge rod (2) are hinged to a second sealing cover (3). A first connecting block (4) is fixedly connected to the right side of the second sealing cover (3). A second connecting block (5) is fixedly connected to the right side of the outer wall of the first sealing cover (1). The lower surface of the first connecting block (4) contacts the upper surface of the second connecting block (5). A sealing rubber sheet (6) is fixedly connected to the middle of the inner wall of the first sealing cover (1) and the middle of the inner wall of the second sealing cover (3). A pressure block (7) is slidably connected to the inner walls of the first sealing cover (1) and the second sealing cover (3). A squeezing mechanism (8) is provided inside the first sealing cover (1) and the second sealing cover (3). A closing mechanism (9) is provided inside the second connecting block (5). The extrusion mechanism (8) includes a fixing component and an extrusion block (803) on the fixing component. The upper end of the extrusion block (803) inside the first sealing cover (1) extends through the first sealing cover (1) to the upper side of the first sealing cover (1). The lower end of the extrusion block (803) inside the second sealing cover (3) extends through the second sealing cover (3) to the lower side of the second sealing cover (3). The two extrusion blocks (803) are in contact, and the extrusion block (803) can move in an arc-shaped trajectory. The closing mechanism (9) includes a connecting component and a plug (903) on the connecting component. The plug (903) is movable up and down. The fixing component includes an air cavity (801). The air cavity (801) is an arc-shaped cavity opened inside the first sealing cover (1) and the second sealing cover (3). The two ends of the air cavity (801) are connected to the outer sides of the first sealing cover (1) and the second sealing cover (3). The inner wall of the air cavity (801) is fixedly connected to... The limiting block (802) is slidably connected to the inner wall of the air chamber (801) and the outer wall of the extrusion block (803). The width of the middle part of the extrusion block (803) is smaller than the width of both ends of the extrusion block (803). The limiting block (802) is located in the middle of the extrusion block (803). A circular hole is opened on the side wall of the air chamber (801) near the pressure block (7). An air pipe (804) is slidably connected to the inner wall of the circular hole. A push rod is inserted into the inner wall of the air pipe (804). 805), one end of the push rod (805) extends through the air tube (804) to the outside of the air tube (804) and is fixedly connected to the outer wall of the pressurizing block (7). The connecting assembly includes an installation tube (901). The upper end of the installation tube (901) is fixedly connected to the lower side of the second connecting block (5). The first connecting block (4) and the second connecting block (5) are provided with insertion holes. The interior of the insertion holes is connected to the interior of the installation tube (901). A spring (902) is fixedly connected to the bottom of the inner wall of the installation tube (901). An insertion block (903) is fixedly connected to the upper end of the spring (902). The outer wall of the insertion block (903) is in contact with the inner wall of the installation tube (901). A threaded rod (904) is threadedly connected to the inner wall of the insertion hole on the first connecting block (4). A rubber head (905) is fixedly connected to the lower end of the threaded rod (904). The lower surface of the rubber head (905) is in contact with the upper surface of the insertion block (903).

2. A pipe flange quick connecting device according to claim 1, characterized in that: The first sealing cover (1) has a cavity (10) inside on one side of the hinge rod (2). The upper and lower sides of the cavity (10) are connected to the outside of the first sealing cover (1). A rod (11) is inserted into the cavity (10). The upper end of the rod (11) is fixedly connected to the lower side of the outer wall of the second sealing cover (3).

3. A pipe flange quick connecting device according to claim 2, characterized in that: The first sealing cover (1) and the second sealing cover (3) are each provided with two pressure blocks (7). The two pressure blocks (7) are inclined on the side that is close to each other, and the side of the pressure blocks (7) that is close to each other covers the upper side of the sealing rubber sheet (6).

4. A pipe flange quick connecting device according to claim 3, characterized in that: The air chamber (801) is filled with high-pressure gas. The first sealing cover (1) and the second sealing cover (3) are cylindrical structures with a large inner diameter in the middle and a small inner diameter at both ends when closed.

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