Sampling port sealing device

Abstract

The utility model provides a sampling port sealing device. The sampling port sealing device comprises a sealing cover plate, a connecting assembly and at least one fastening assembly, the sealing cover plate is movably mounted at the top of the sampling port through the connecting assembly; one end of the fastening assembly is fixedly arranged on the sampling port or the sealing cover plate, and the other end of the fastening assembly can correspondingly move relative to the sealing cover plate or the sampling port, so that the sealing cover plate can be tightly pressed at the top of the sampling port, or the sealing cover plate can be loosened and limitation on the sealing cover plate can be eliminated; a handle capable of controlling the fastening assembly to move is arranged at the other end of the fastening assembly, so that the sampling port can be opened and closed without an external tool, the operation is convenient and fast, the consumed time is short, and the sampling efficiency can be improved; and the fastening assembly does not need to be detached in the operation process, so that the fastening assembly cannot be lost, the sealing cover plate cannot be damaged easily, and the maintenance cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection detection, in particular to a sampling port sealing device. Background Art

[0002] As industrial production continues to expand, emissions of various pollutants are also increasing. In particular, toxic and hazardous gases generated during the use of chemicals and specialty gases, if released without proper treatment, can have long-term and irreversible impacts on the environment. Therefore, regular monitoring of pollutant levels in exhaust gases has become a key means of controlling industrial pollution sources. In accordance with relevant regulations, companies install standard sampling ports at emission points, such as chimney exits and treatment facility entrances, to facilitate oversight and testing by environmental protection authorities. Exhaust gas samples collected through these ports can be used to analyze pollutant composition and concentration, thereby effectively monitoring pollution sources.

[0003] The top of the sampling port in traditional design generally adopts a flat structure, and holes are reserved for installing fixing bolts to tighten the sealing cover. When the sampling port is not in use, it is necessary to ensure that the sealing cover is tightly connected to the sampling port; when performing sampling tasks, it is necessary to use tools such as wrenches to remove the fixing bolts and move or completely disassemble the sealing cover. Specifically, Figure 1 Taking the sampling port sealing device structure shown as an example, the sampling port sealing device includes a sampling port and a sealing cover plate, and the top of the sampling port and the sealing cover plate are respectively provided with through holes for installing fixing bolts, and then the fixing bolt studs are sequentially passed through the sealing cover plate and the through holes on the top of the sampling port, and then a wrench or other tool is used to tighten the fixing bolt nut, so as to fasten the sealing cover plate and the top of the sampling port together to achieve the sealing of the sampling port; when sampling is required, the nut on the fixing bolt is rotated counterclockwise with the help of a wrench or other tool to disengage from the stud, and then the fixing bolt is removed, and the sealing cover plate is removed or deviated from the sampling port; after the sampling is completed, the removed fixing bolt is picked up and installed on the sealing cover plate and the top of the sampling port to achieve the sealing of the sampling port.

[0004] The sampling port sealing device of the above structure requires external tools when opening and closing the sampling port. Not only is the operation cumbersome, time-consuming, and inefficient, but frequent disassembly and assembly may also lead to the loss of fixing bolts, while increasing the risk of damage to the sealing cover, thereby increasing maintenance costs. Utility Model Content

[0005] The utility model provides a sampling port sealing device that can open and close the sampling port without the need for external tools. It is easy to operate, can improve sampling efficiency, and reduce maintenance costs. The specific technical solution is as follows:

[0006] A sampling port sealing device includes a sealing cover plate, a connecting assembly and at least one fastening assembly; the sealing cover plate can be movably mounted on the top of the sampling port through the connecting assembly; one end of the fastening assembly is fixedly arranged on the sampling port or the sealing cover plate, and the other end of the fastening assembly can move relative to the sealing cover plate or the sampling port accordingly, and can press the sealing cover plate against the top of the sampling port, or loosen the sealing cover plate and eliminate the limitation on the sealing cover plate, and the other end of the fastening assembly is provided with a handle for controlling its movement.

[0007] Furthermore, the number of the fastening components is three, and the three fastening components and the connecting components are evenly distributed circumferentially at the top of the sampling port.

[0008] Furthermore, the connecting assembly includes a first connecting component and a first fixing bolt; the first connecting component is fixedly arranged on the outer side wall of the sampling port; the first fixing bolt includes a first fixing stud and a first fixing nut, and a connecting hole adapted for the first fixing stud is provided on the sealing cover plate, one end of the first fixing stud is fixedly connected to the first connecting component, and the other end passes through the connecting hole and protrudes from the top surface of the sealing cover plate; the first fixing nut is threadedly connected to the other end of the first fixing stud to movably connect the sealing cover plate to the sampling port.

[0009] Furthermore, the fastening assembly includes a second connecting part and a second fixing bolt; the second connecting part includes a U-shaped connecting part and a rotating shaft, the U-shaped connecting part is fixedly arranged on the outer side wall of the sampling port, and the rotating shaft is horizontally passed through the middle of the U-shaped connecting part; the second fixing bolt includes a second fixing stud and a second fixing nut, and the sealing cover is provided with a U-shaped connecting groove that is adapted to the second fixing stud and opens outward, one end of the second fixing stud is connected to the rotating shaft, and the other end passes through the U-shaped connecting groove and protrudes from the top surface of the sealing cover and can be rotated downward along the opening of the U-shaped connecting groove; the second fixing nut is threadedly connected to the other end of the second fixing stud, so that the sealing cover can be pressed against the top of the sampling port, and the second fixing nut is provided with a handle that can control its rotational movement.

[0010] Furthermore, the rotating shaft is fixedly arranged in the middle of the U-shaped connecting piece, and a circular ring that can rotate around the rotating shaft is sleeved on the rotating shaft, and one end of the second fixing stud is fixedly connected to the circular ring.

[0011] Furthermore, the second fixing nut is a ring-shaped nut.

[0012] Furthermore, a sealing gasket is provided between the sampling port and the sealing cover plate.

[0013] Furthermore, the sealing gasket is detachably mounted on the top of the sampling port through the connecting assembly.

[0014] Furthermore, the sealing gasket is made of anti-corrosion material.

[0015] Furthermore, the sealing cover plate is made of a visible anti-corrosion material.

[0016] The sampling port sealing device provided by the utility model can open and close the sampling port without the help of external tools through the mutual cooperation of the sealing cover plate, the connecting assembly and the fastening assembly. The operation is convenient and time-saving, which can improve the sampling efficiency. Moreover, there is no need to disassemble the fastening assembly during operation, which will not cause the loss of the fastening assembly and is not likely to cause damage to the sealing cover plate, which can reduce maintenance costs.

[0017] Furthermore, the number of the fastening components is set to three, and the three fastening components and the connecting components are evenly distributed circumferentially on the top of the sampling port, thereby improving the symmetry and stability of the sampling port sealing device structure, so that the sealing cover plate can be evenly stressed and better pressed on the top of the sampling port, thereby improving the sealing effect and facilitating operation and maintenance.

[0018] Furthermore, a sealing gasket is provided between the sampling port and the sealing cover plate, and the sealing gasket can increase the sealing between the sampling port and the sealing cover plate, ensuring a good sealing effect, thereby preventing gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the sampling port sealing device in the prior art.

[0020] Figure 2 This is a schematic structural diagram of the sampling port sealing device provided in this embodiment.

[0021] Figure 3 Schematic diagram of the use of the sampling port sealing device provided in this embodiment Figure 1 .

[0022] Figure 4 Schematic diagram of the use of the sampling port sealing device provided in this embodiment Figure 2 .

[0023] The figures are marked as follows: 1 is the sampling port, 2 is the sealing cover, 21 is the connecting hole, 22 is the U-shaped connecting groove, 3 is the connecting assembly, 31 is the first connecting part, 32 is the first fixing bolt, 321 is the first fixing stud, 322 is the first fixing nut, 4 is the fastening assembly, 41 is the second connecting part, 411 is the U-shaped connecting part, 412 is the rotating shaft, 413 is the ring, 42 is the second fixing bolt, 421 is the second fixing stud, 422 is the second fixing nut, and 5 is the sealing gasket. DETAILED DESCRIPTION

[0024] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings. For ease of description, the terms "front," "back," "front," "backward," "left," "right," "top," "bottom," "up," "down," "inside," "outside," and "inner" used in the present invention to indicate positions or locations are based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention or the actual orientation of the product or device during production, use, or sale. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features referred to. Furthermore, in the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "disposed," "connected," "fixed," and "composed" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integration; direct connections, or indirect connections through an intermediary. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0025] The utility model provides a sampling port sealing device, which can realize opening and closing of the sampling port without the aid of external tools such as a wrench. It is not only convenient to operate, but also does not need to disassemble the fastening component during the operation.

[0026] Specifically, if Figure 2 As shown, the sampling port sealing device includes a sealing cover plate 2, a connecting component 3 and at least one fastening component 4 (for example, one, two, three or more, depending on the actual situation); wherein:

[0027] The sealing cover plate 2 is movably mounted on the top of the sampling port 1 through the connecting assembly 3. The movably mounted on the top of the sampling port 1 can be through a hinge so that the sealing cover plate 2 can be flipped on the top of the sampling port 1, or the sealing cover plate 2 can be rotated on the top of the sampling port 1 through a rotating shaft, or the sealing cover plate 2 can be slid on the top of the sampling port 1 through a slide rail, so that it can cover the top of the sampling port 1, or it can deviate from the sampling port 1 under the action of an external force.

[0028] One end of the fastening assembly 4 is fixedly provided on the sampling port 1, and the other end can move relative to the sealing cover plate 2, so as to press the sealing cover plate 2 against the top of the sampling port 1, or loosen the sealing cover plate 2 so that the sealing cover plate 2 can deviate from the top of the sampling port 1; for example, a rotary fastener can be used, wherein one end of the rotary fastener is fixedly provided on the sampling port 1, and the other end can press the sealing cover plate 2 when it rotates longitudinally or transversely to the top surface of the sealing cover plate 2, and the limiting effect disappears when it is away from the sealing cover plate 2, and the sealing cover plate 2 can be movable and deviate from the top of the sampling port 1; or a snap-on fastener can be used, wherein one end of the snap-on fastener is fixedly provided on the sampling port 1, and the other end can press the sealing cover plate 2 when it moves to the top surface of the sealing cover plate 2, and the limiting effect disappears when it is away from the sealing cover plate 2, and the sealing cover plate 2 can be movable and deviate from the top of the sampling port 1; the deviating from the top of the sampling port 1 refers to moving away from the top of the sampling port 1 by flipping, rotating or sliding.

[0029] Of course, the above-mentioned structure of the fastening component 4 can also be adjusted as follows: one end of the fastening component 4 is fixedly set on the sealing cover plate 2, and the other end can move relative to the sampling port 1, so as to press the sealing cover plate 2 against the top of the sampling port 1, or loosen the sealing cover plate 2 so that the sealing cover plate 2 can deviate from the top of the sampling port 1.

[0030] In addition, the other end of the fastening component 4 is provided with a handle for controlling its movement. The handle can be an integrated structure of the fastening component 4 itself, or it can be an additional structure. As long as the movement of the other end of the fastening component 4 can be controlled, it will depend on the actual situation and is not limited here.

[0031] Under normal use, such as Figure 2 As shown, the sampling port 1 remains closed, and the other end of the fastening assembly 4 is located on the top surface of the sealing cover plate 2, and the sealing cover plate 2 is tightly covered on the top of the sampling port 1; when sampling is required, Figure 3 、 Figure 4As shown, adjust the other end of the fastening component 4 so that the other end of the fastening component 4 moves away from the top surface of the sealing cover plate 2, so that its limiting effect on the sealing cover plate 2 disappears, thereby making the sealing cover plate 2 movable, such as flipping, rotating or sliding, so that the sealing cover plate 2 deviates from the top of the sampling port 1. At this time, the sampling port 1 is open for the operator to perform the sampling operation; after the sampling is completed, the sealing cover plate 2 is moved back to the top of the sampling port 1, and then the other end of the fastening component 4 is adjusted to move it to the top surface of the sealing cover plate 2, pressing the sealing cover plate 2, so that the sampling port 1 can be closed and it can continue to remain in a closed state.

[0032] The sampling port sealing device adopts the above structure. Through the mutual cooperation of the sealing cover plate 2, the connecting component 3 and the fastening component 4, the sampling port can be opened and closed without the aid of external tools. The operation is convenient and time-saving, which can improve the sampling efficiency. Moreover, there is no need to remove the fastening component 4 during the operation, which will not cause the loss of the fastening component 4 and is not likely to cause damage to the sealing cover plate 2, which can reduce maintenance costs.

[0033] In some embodiments, preferably, the number of the fastening components 4 is three, and the three fastening components 4 and the connecting components 3 are evenly distributed around the top of the sampling port 1, such as Figure 3 、 Figure 4 As shown, the three fastening components 4 and the connecting component 3 are evenly distributed at 90° in the circumferential direction of the top of the sampling port 1 .

[0034] The sampling port sealing device adopts the above structure, by setting the number of the fastening components 4 to three, and the three fastening components 4 and the connecting components 3 are evenly distributed circumferentially at the top of the sampling port 1, thereby improving the symmetry and stability of the sampling port sealing device structure, so that the sealing cover plate 2 can be evenly stressed and better pressed against the top of the sampling port 1, thereby improving the sealing effect and facilitating operation and maintenance.

[0035] In some embodiments, as Figure 3As shown, the connecting assembly 3 includes a first connecting component 31 and a first fixing bolt 32; specifically, the first connecting component 31 is fixedly arranged on the outer wall of the sampling port 1. For example, in this embodiment, the first connecting component 31 is fixedly arranged on the outer wall of the sampling port 1 through the flange on the outer wall of the sampling port 1; the first fixing bolt 32 includes a first fixing stud 321 and a first fixing nut 322, and the sealing cover plate 2 is provided with a connecting hole 21 adapted to the first fixing stud 321, allowing the first fixing stud 321 to pass through; one end of the first fixing stud 321 is fixedly connected to the first connecting component 31, and the other end passes through the connecting hole 21 and protrudes from the top surface of the sealing cover plate 2; the first fixing nut 322 is threadedly connected to the other end of the first fixing stud 321, so that the sealing cover plate 2 and the sampling port 1 are movably connected.

[0036] The sampling port sealing device adopts the above structure, through the mutual cooperation of the first connecting component 31 and the first fixing bolt 32, it is well possible to realize that the sealing cover plate 2 can be movably installed on the top of the sampling port 1. By rotating the sealing cover plate 2 around the first fixing stud 321 of the first fixing bolt 32, the sealing cover plate 2 can be deviated from the top of the sampling port 1 to realize the opening of the sampling port 1, thereby eliminating the need to remove the sealing cover plate 2, and avoiding the risk of increasing damage to the sealing cover plate 2. It is not only simple in structure, convenient in operation, stable and reliable, but also convenient for maintenance and replacement of the sealing cover plate 2.

[0037] In some embodiments, continuing as Figure 3As shown, the fastening assembly 4 includes a second connecting part 41 and a second fixing bolt 42; the second connecting part 41 includes a U-shaped connecting part 411 and a rotating shaft 412, the U-shaped connecting part 411 is fixedly arranged on the outer wall of the sampling port 1, for example, in this embodiment, the U-shaped connecting part 411 is fixedly arranged on the outer wall of the sampling port 1 through the flange on the outer wall of the sampling port 1; the rotating shaft 412 is horizontally passed through the middle of the U-shaped connecting part 411; the second fixing bolt 42 includes a second fixing stud 421 and a second fixing nut 422, and the sealing cover plate 2 is provided with a U-shaped connecting groove 22 that is adapted to the second fixing stud 421 and is open outward, one end of the second fixing stud 421 is connected to the rotating shaft 412, and the other end passes through the U-shaped connecting groove 22 to protrude from the top surface of the sealing cover plate 2 and can be rotated downward along the opening of the U-shaped connecting groove 22; the second The fixing nut 422 is threadedly connected to the other end of the second fixing stud 421, so that the sealing cover plate 2 can be pressed against the top of the sampling port 1, and the second fixing nut 422 is provided with a handle for controlling its rotational movement, such as a ball handle, etc.; for example, one end of the second fixing stud 421 is fixedly connected to the rotating shaft 412, and the rotating shaft 412 can rotate along its axis in the middle of the U-shaped connecting member 411, so that the second fixing stud 421 can also rotate along the axis of the rotating shaft 412 in the middle of the U-shaped connecting member 411, and when the other end of the second fixing stud 421 is rotated to the top surface of the sealing cover plate 2, the sealing cover plate 2 can be pressed; when the other end of the second fixing stud 421 is rotated away from the sealing cover plate 2, the limiting effect disappears, and the sealing cover plate 2 can be movable and can deviate from the top of the sampling port 1, thereby realizing the opening of the sampling port 1.

[0038] The sampling port sealing device adopts the above structure, through the mutual cooperation of the second connecting component 41 and the second fixing bolt 42, it is possible to well achieve the effect of pressing the sealing cover plate 2 against the top of the sampling port 1, or loosening the sealing cover plate 2 so that the sealing cover plate 2 can deviate from the top of the sampling port 1. Moreover, during the operation process, the second connecting component 41 and the second fixing bolt 42 always remain on the sampling port 1, and will not cause the loss of the second connecting component 41 and the second fixing bolt 42. This not only reduces the maintenance cost caused by the loss of the fastening component, but also has a simple structure, convenient operation, and is stable and reliable.

[0039] In some embodiments, the rotating shaft 412 is fixedly arranged in the middle of the U-shaped connecting member 411 (for example, it can be fixed by bolts, etc.), and a circular ring 413 that can rotate around the rotating shaft 412 is sleeved on the rotating shaft 412, and one end of the second fixing stud 421 is fixedly connected to the circular ring 413, so that the second fixing stud 421 can rotate around the rotating shaft 412. When the other end of the second fixing stud 421 is rotated to the top surface of the sealing cover plate 2, the sealing cover plate 2 can be pressed. When the other end of the second fixing stud 421 is rotated away from the sealing cover plate 2, the limiting effect disappears, and the sealing cover plate 2 is movable and can deviate from the top of the sampling port 1, thereby realizing the opening of the sampling port 1.

[0040] The sampling port sealing device adopts the above structure, by arranging a ring 413 that can rotate around the rotating shaft 412 on the rotating shaft 412, the rotation movement of the second fixing stud 421 can be achieved, so that the sealing cover plate 2 can be pressed against the top of the sampling port 1, or the sealing cover plate 2 can be loosened so that the sealing cover plate 2 can deviate from the top of the sampling port 1. Moreover, during rotation, only the ring 413 needs to rotate on the rotating shaft 412, and the rotating shaft 412 itself does not need to rotate, which saves effort in operation, improves the convenience of operation, and makes the structure more stable and reliable.

[0041] In some embodiments, as shown in this embodiment, the second fixing nut 422 is a ring-shaped nut, and the ring on the top of the second fixing nut 422 can be directly used as an operating handle to facilitate the operator to rotate, which can save more effort and improve the convenience of operation.

[0042] In some embodiments, a sealing gasket 5 is further provided between the sampling port 1 and the sealing cover plate 2. The sealing gasket 5 can be fixedly provided at the top of the sampling port 1, or fixedly provided at the bottom of the sealing cover plate 2, or can be detachably installed at the top of the sampling port 1 or the bottom of the sealing cover plate 2 through other connecting components.

[0043] The sampling port sealing device with the above structure can improve the sealing between the sampling port 1 and the sealing cover plate 2 by providing a sealing gasket 5 between the sampling port 1 and the sealing cover plate 2, thereby ensuring a good sealing effect and preventing gas leakage.

[0044] In some embodiments, the sealing gasket 5 is detachably mounted on the top of the sampling port 1 through the connecting assembly 3; this makes it convenient to replace the sealing gasket 5 after aging, and secondly, it is directly mounted on the top of the sampling port 1 through the connecting assembly 3 without the need to set up other connecting components, which can make the structure simpler and the cost lower.

[0045] In some embodiments, the sealing gasket 5 is made of an anti-corrosion material, such as polytetrafluoroethylene, which can prevent the sealing gasket 5 from being corroded by exhaust gas, extend the service life of the sealing gasket 5, and improve the reliability of the sampling port sealing device.

[0046] In some embodiments, the sealing cover plate 2 is made of a visual anti-corrosion material, such as polypropylene, and can be used as an observation port to facilitate operators to observe the exhaust conditions inside the exhaust pipe. At the same time, it can prevent the sealing cover plate 2 from being corroded by exhaust gas, thereby extending the service life of the sealing cover plate 2 and improving the reliability of the sampling port sealing device.

[0047] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Any equivalent changes based on the shape, structure and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sampling port sealing device, characterized in that: The invention comprises a sealing cover plate (2), a connecting assembly (3) and at least one fastening assembly (4); the sealing cover plate (2) is movably mounted on the top of the sampling port (1) via the connecting assembly (3); one end of the fastening assembly (4) is fixedly arranged on the sampling port (1) or the sealing cover plate (2), and the other end of the fastening assembly (4) is movable relative to the sealing cover plate (2) or the sampling port (1), and can press the sealing cover plate (2) against the top of the sampling port (1), or loosen the sealing cover plate (2) and eliminate the limit on the sealing cover plate (2), and the other end of the fastening assembly (4) is provided with a handle for controlling its movement.

2. The sampling port sealing device according to claim 1, characterized in that: The number of the fastening components (4) is three, and the three fastening components (4) and the connecting components (3) are evenly distributed in the circumferential direction of the top of the sampling port (1).

3. The sampling port sealing device according to claim 1, characterized in that: The connecting assembly (3) comprises a first connecting component (31) and a first fixing bolt (32); the first connecting component (31) is fixedly arranged on the outer side wall of the sampling port (1); the first fixing bolt (32) comprises a first fixing stud (321) and a first fixing nut (322); a connecting hole (21) adapted to the first fixing stud (321) is provided on the sealing cover plate (2); one end of the first fixing stud (321) is fixedly connected to the first connecting component (31), and the other end passes through the connecting hole (21) and protrudes from the top surface of the sealing cover plate (2); the first fixing nut (322) is threadedly connected to the other end of the first fixing stud (321), so as to movably connect the sealing cover plate (2) and the sampling port (1).

4. The sampling port sealing device according to claim 1, characterized in that: The fastening assembly (4) comprises a second connecting component (41) and a second fixing bolt (42); the second connecting component (41) comprises a U-shaped connecting piece (411) and a rotating shaft (412); the U-shaped connecting piece (411) is fixedly arranged on the outer side wall of the sampling port (1); the rotating shaft (412) is transversely passed through the middle of the U-shaped connecting piece (411); the second fixing bolt (42) comprises a second fixing stud (421) and a second fixing nut (422); the sealing cover plate (2) is provided with a second fixing stud (421) and a second fixing nut (422). A U-shaped connecting groove (22) is adapted to the sealing cover (2) and opens outward, one end of the second fixing stud (421) is connected to the rotating shaft (412), and the other end passes through the U-shaped connecting groove (22) and protrudes from the top surface of the sealing cover (2) and can be rotated downward along the opening of the U-shaped connecting groove (22); the second fixing nut (422) is threadedly connected to the other end of the second fixing stud (421), and the sealing cover (2) can be pressed against the top of the sampling port (1), and a handle for controlling its rotational movement is provided on the second fixing nut (422).

5. The sampling port sealing device according to claim 4, characterized in that: The rotating shaft (412) is fixedly arranged in the middle of the U-shaped connecting piece (411), and a circular ring (413) that can rotate around the rotating shaft (412) is sleeved on the rotating shaft (412), and one end of the second fixing screw (421) is fixedly connected to the circular ring (413).

6. The sampling port sealing device according to claim 4, characterized in that: The second fixing nut (422) is a ring-shaped nut.

7. The sampling port sealing device according to any one of claims 1 to 6, characterized in that: A sealing gasket (5) is also provided between the sampling port (1) and the sealing cover plate (2).

8. The sampling port sealing device according to claim 7, characterized in that: The sealing gasket (5) is detachably mounted on the top of the sampling port (1) via the connecting assembly (3).

9. The sampling port sealing device according to claim 7, characterized in that: The sealing gasket (5) is made of an anti-corrosion material.

10. The sampling port sealing device according to any one of claims 1 to 6, characterized in that: The sealing cover plate (2) is made of a visible anti-corrosion material.

Images