Waste gas detection port structure

Abstract

The utility model relates to the technical field of waste gas detection, and particularly discloses a waste gas detection port structure which can be arranged on a waste gas discharge pipeline, a detection pipeline is communicated with the waste gas discharge pipeline, and the exhaust end of the detection pipeline is a detection port. The cover plate is not tightly pressed by the grab handle, then the rotating shaft is swung towards the outer side of the second clearance groove, so that the rotating shaft is separated from the second clearance groove, the cover plate is opened, and the waste gas exhausted from the detection pipeline is sampled and detected; after detection is completed, the cover plate is rotated to one end face to abut against the annular plate, then the rotating shaft is swung into the second receding groove, the grab handle is rotated, the cover plate is pressed tightly through the grab handle, fixing of the cover plate is achieved, operation is easy, air leakage can be avoided, and the good sealing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas detection, in particular to a waste gas detection port structure. Background Art

[0002] Industrial waste gas is usually treated by waste gas treatment equipment before being discharged into the air. In order to sample and test the treated waste gas, a waste gas detection port is generally opened on the waste gas discharge pipe. The waste gas detection port is provided with a cover. When the staff conducts smoke detection, they open the cover and extract waste gas samples from the waste gas detection port for subsequent testing.

[0003] In the prior art, the structure of the exhaust gas discharge port can refer to a leakage-proof exhaust gas discharge port disclosed in Chinese patent publication number CN206860961U, which includes a fixed shaft, a first cover plate, a second cover plate and a connecting piece. The first cover plate and the second cover plate are connected by a connecting piece. The fixed shaft is arranged between the first cover plate and the second cover plate, and two connecting pieces are provided on the fixed shaft; the first cover plate and the second cover plate are opened under the action of the working airflow, and the rotation direction is consistent with the actual working airflow direction. When there is no working airflow, they are closed due to the influence of their own gravity, thereby achieving the purpose of leakage prevention.

[0004] The above-mentioned exhaust gas discharge port is suitable for installation at the discharge port position of the exhaust gas discharge pipe. However, for exhaust gas sampling, since it is necessary to ensure the sealing of the detection port when no sampling is performed, if the above-mentioned exhaust gas discharge port is directly used as the exhaust port for sampling detection, the exhaust gas will easily leak from the exhaust gas detection port position under the action of the exhaust gas pressure. Therefore, the above-mentioned structure is not suitable for the exhaust port for sampling detection.

[0005] Therefore, the existing technology still needs to be improved and developed. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an exhaust gas detection port structure to solve the problem that the exhaust port structure in the prior art cannot be directly converted into an exhaust port for detection.

[0007] A waste gas detection port structure includes a detection pipe and a cover plate. The detection pipe includes a pipe body, an annular plate connected to the air outlet end of the pipe body, one end of the cover plate is hinged to the annular plate, and the other end of the cover plate is fixedly connected to the annular plate through a locking member. The locking member includes a rotating shaft fixed to the end of the annular plate away from the cover plate, a swinging member rotatably matched with the rotating shaft, a screw connected to one end of the swinging member, and a handle that cooperates with the screw thread and is used to press the cover plate. The annular plate is provided with a first air avoidance groove for the swinging member to swing, and the cover plate is provided with a second air avoidance groove for the screw to swing into.

[0008] Specifically, the pipe body and the annular plate are integrally formed and connected.

[0009] Specifically, the first air avoidance groove is provided on the outer edge of the annular plate, and the second air avoidance groove is provided on the outer edge of the cover plate. Both the first air avoidance groove and the second air avoidance groove are U-shaped grooves.

[0010] Specifically, the rotating shaft is welded to the annular plate.

[0011] Specifically, both ends of the rotating shaft along the length direction are provided with fixing seats, and the fixing seats are fixed to the annular plate by screws.

[0012] Specifically, the handle is provided with an internal threaded hole matched with the screw rod, and the handle is provided with a through hole perpendicular to the internal threaded hole.

[0013] Specifically, one end of the cover plate is hinged to the annular plate through a hinge.

[0014] Specifically, a handle is provided at one end of the cover plate away from the annular plate.

[0015] Beneficial effects of the utility model:

[0016] The exhaust gas detection port structure of the present invention can be set on the exhaust gas emission pipe to connect the detection pipe with the exhaust gas emission pipe. The exhaust end of the detection pipe is the detection port. When the staff needs to sample and detect the exhaust gas transported in the exhaust gas emission pipe, the handle can be rotated so that the handle no longer presses the cover plate, and then the rotating shaft is swung to the outside of the second air avoidance groove to disengage the rotating shaft from the second air avoidance groove, and then the cover plate is opened to sample and detect the exhaust gas discharged from the detection pipe; after completing the detection, the cover plate is rotated until one end face conflicts with the annular plate, and then the rotating shaft is swung into the second air avoidance groove, and the handle is rotated to use the handle to press the cover plate to fix the cover plate. The operation is simple, and air leakage can be avoided, and it has a good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the exhaust gas detection port structure of this embodiment;

[0018] Figure 2 for Figure 1 Cross-section of the middle AA surface;

[0019] Figure 3 The three-dimensional structure of the exhaust gas detection port of this embodiment Figure 1 , the cover is in a closed state;

[0020] Figure 4 The three-dimensional structure of the exhaust gas detection port of this embodiment Figure 2 , the cover is in the open state;

[0021] Figure 5 for Figure 4 Magnified view of part B.

[0022] The figures are marked as follows: detection pipe 10, cover plate 20, pipe body 11, annular plate 12, locking member 30, rotating shaft 31, swinging member 32, screw 33, handle 34, first air avoidance groove 121, second air avoidance groove 21, fixing seat 311, internal threaded hole 341, through hole 342, hinge 40, handle 50. DETAILED DESCRIPTION

[0023] The present invention provides an exhaust gas detection port structure. To make the purpose, technical solution, and effects of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are intended only to illustrate the present invention and are not intended to limit the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0025] like Figures 1 to 5 The present embodiment discloses an exhaust gas detection port structure, including a detection pipe 10 and a cover plate 20. The detection pipe 10 includes a pipe body 11, an annular plate 12 connected to the air outlet end of the pipe body 11, one end of the cover plate 20 is hinged to the annular plate 12, and the other end of the cover plate 20 is fixedly connected to the annular plate 12 through a locking member 30. The locking member 30 includes a rotating shaft 31 fixed to the end of the annular plate 12 away from the cover plate 20, a swinging member 32 rotatably engaged with the rotating shaft 31, a screw 33 connected to one end of the swinging member 32, and a handle 34 threadedly engaged with the screw 33 and used to press the cover plate 20. The annular plate 12 is provided with a first air avoidance groove 121 for the swinging member 32 to swing, and the cover plate 20 is provided with a second air avoidance groove 21 for the screw 33 to swing into.

[0026] The exhaust gas detection port structure of this embodiment can be set on the exhaust gas emission pipe to connect the detection pipe 10 with the exhaust gas emission pipe. The exhaust end of the detection pipe 10 is the detection port. When the staff needs to sample and detect the exhaust gas transported in the exhaust gas emission pipe, they can rotate the handle 34 so that the handle 34 no longer presses the cover plate 20, and then swing the rotating shaft 31 to the outside of the second air avoidance groove 21 to disengage the rotating shaft 31 from the second air avoidance groove 21, and then open the cover plate 20 to sample and detect the exhaust gas discharged from the detection pipe 10; after completing the detection, rotate the cover plate 20 until one end face conflicts with the annular plate 12, and then swing the rotating shaft 31 into the second air avoidance groove 21, rotate the handle 34, and use the handle 34 to press the cover plate 20 to fix the cover plate 20. The operation is simple, and it can also avoid air leakage and has a good sealing effect.

[0027] Please refer to Figure 2 In this embodiment, the pipe body 11 and the annular plate 12 are integrally formed and connected. There is no gap at the connection between the pipe body 11 and the annular plate 12, which ensures the sealing of the detection pipe 10 and prevents exhaust gas from leaking from the connection between the pipe body 11 and the annular plate 12.

[0028] Please refer to Figure 4 and Figure 5 In this embodiment, the first air avoidance groove 121 is arranged on the outer edge of the annular plate 12, and the second air avoidance groove 21 is arranged on the outer edge of the cover plate 20. The first air avoidance groove 121 and the second air avoidance groove 21 are both U-shaped grooves, and the two sides of the open end of the U-shaped groove are chamfered to guide the screw 33 into the second air avoidance groove 21.

[0029] Please refer to Figure 5 In this embodiment, both ends of the rotating shaft 31 along the length direction are provided with fixing seats 311, and the fixing seats 311 are fixed to the annular plate 12 by screws, so as to facilitate disassembly and replacement.

[0030] In another embodiment, in order to improve the structural stability of the rotating shaft 31 , the rotating shaft 31 is welded to the annular plate 12 .

[0031] Please refer to Figure 5 The handle 34 of this embodiment is provided with an internal threaded hole 341 that cooperates with the screw 33, and a through hole 342 is provided on the handle 34 that is perpendicular to the internal threaded hole 341. By setting the through hole 342, the handle 34 can be rotated in conjunction with a screwing tool such as a rod. When the handle 34 needs to be tightened, the rod is passed through the through hole 342, and then the rotation is assisted by the rod, which can greatly reduce the difficulty of rotation.

[0032] Furthermore, one end of the cover plate 20 of the present embodiment is hinged to the annular plate 12 via a hinge 40 . The hinge is easy to install, has a simple structure, is convenient to use, and is easy to maintain.

[0033] Furthermore, in this embodiment, a handle 50 is provided at one end of the cover plate 20 away from the annular plate 12 to facilitate the staff to open or close the cover plate 20 .

[0034] The above specifically describes the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. An exhaust gas detection port structure, comprising a detection pipe (10) and a cover plate (20), characterized in that: The detection pipe (10) includes a pipe body (11), an annular plate (12) connected to the air outlet end of the pipe body (11), one end of the cover plate (20) is hinged to the annular plate (12), and the other end of the cover plate (20) is fixedly connected to the annular plate (12) through a locking member (30), the locking member (30) includes a rotating shaft (31) fixed to an end of the annular plate (12) away from the cover plate (20), a swinging member (32) rotatably engaged with the rotating shaft (31), a screw (33) connected to one end of the swinging member (32), and a handle (34) threadedly engaged with the screw (33) and used to press the cover plate (20), the annular plate (12) is provided with a first air avoidance groove (121) for the swinging member (32) to swing, and the cover plate (20) is provided with a second air avoidance groove (21) for the screw (33) to swing into.

2. The exhaust gas detection port structure according to claim 1, characterized in that: The pipe body (11) and the annular plate (12) are integrally formed and connected.

3. The exhaust gas detection port structure according to claim 1, characterized in that: The first air avoidance groove (121) is provided on the outer edge of the annular plate (12), and the second air avoidance groove (21) is provided on the outer edge of the cover plate (20). Both the first air avoidance groove (121) and the second air avoidance groove (21) are U-shaped grooves.

4. The exhaust gas detection port structure according to claim 1, characterized in that: The rotating shaft (31) is welded to the annular plate (12).

5. The exhaust gas detection port structure according to claim 1, characterized in that: Both ends of the rotating shaft (31) along the length direction are provided with fixing seats (311), and the fixing seats (311) are fixed to the annular plate (12) by screws.

6. The exhaust gas detection port structure according to claim 1, characterized in that: The handle (34) is provided with an internal threaded hole (341) matched with the screw rod (33), and the handle (34) is provided with a through hole (342) perpendicular to the internal threaded hole (341).

7. The exhaust gas detection port structure according to claim 1, characterized in that: One end of the cover plate (20) is hinged to the annular plate (12) via a hinge (40).

8. The exhaust gas detection port structure according to claim 1, characterized in that: A handle (50) is also provided at one end of the cover plate (20) away from the annular plate (12).

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