Self-positioning flue gas sampling gun

Abstract

The utility model belongs to the technical field of structural improvement of flue gas sampling guns, and particularly relates to a self-positioning flue gas sampling gun which comprises a gun barrel, first lug plates are fixedly connected to the top and the bottom of the outer side wall of the gun barrel respectively, positioning rods are hinged to the two first lug plates respectively, and first external threads are arranged on the outer side wall of the gun barrel; a movable nut is in threaded connection with the first external thread, a rotating sleeve is rotationally connected to the left end of the movable nut, two second lug plates corresponding to the two positioning rods one to one are fixedly connected to the rotating sleeve, connecting rods are hinged between the two sets of corresponding second lug plates and the positioning rods, and a second external thread is arranged in the middle of the movable nut; the second external threads are in threaded connection with a positioning sealing plate, the positioning sealing plate is connected with a mounting sleeve, and the mounting sleeve is connected with a plurality of radial locking assemblies. The device has a self-positioning function, on one hand, an auxiliary support does not need to be carried, and the carrying difficulty is reduced; on the other hand, the gun barrel is easy and convenient to position, and the smoke sampling efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to a self-positioning flue gas sampling gun, belonging to the technical field of flue gas sampling gun structure improvement. Background Technology

[0002] In environmental monitoring, to ensure that flue gas emitted from industrial chimneys meets national or local emission standards and to prevent excessive emissions from polluting the environment, it is necessary to sample and test the emitted flue gas. Sampling flue gas from chimneys requires vertically inserting a flue gas sampling gun into a pre-drilled testing port on the chimney. Since existing flue gas sampling guns lack self-positioning capabilities, they must be manually positioned during sampling, resulting in high labor intensity for operators and poor sampling stability and accuracy. To reduce operator workload and improve sampling stability and accuracy, some auxiliary supports for flue gas sampling guns have emerged, such as the environmental monitoring sampling gun support disclosed in authorization announcement number CN221375250U and the portable support for flue gas sampling gun disclosed in authorization announcement number CN221463383U. However, this method of using external auxiliary supports not only increases the difficulty of carrying the equipment but also requires assembly and height adjustment during use, making it very inconvenient and undoubtedly reducing flue gas sampling efficiency. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a self-positioning flue gas sampling gun with self-positioning function.

[0004] The self-positioning flue gas sampling gun of this utility model includes a gun barrel. The top and bottom of the outer side wall of the gun barrel are fixedly connected to first ear plates. Positioning rods are hinged to the two first ear plates. The outer side wall of the gun barrel is provided with a first external thread. A movable nut is threadedly connected to the first external thread. A rotating sleeve is rotatably connected to the left end of the movable nut. Two second ear plates, corresponding one-to-one with the two positioning rods, are fixedly connected to the rotating sleeve. A connecting rod is hinged between the two sets of corresponding second ear plates and the positioning rods. A second external thread is provided in the middle of the movable nut. A positioning sealing plate is threadedly connected to the second external thread. An installation sleeve is connected to the positioning sealing plate. Multiple radial locking components are connected to the installation sleeve.

[0005] Furthermore, the right end of the movable nut is provided with anti-slip texture.

[0006] Furthermore, a sealing gasket is fixedly connected to the left side wall of the positioning sealing plate.

[0007] Furthermore, there are three or four radial locking components, and each radial locking component is evenly distributed circumferentially on the mounting sleeve.

[0008] Furthermore, the radial locking assembly includes a screw threaded through the mounting sleeve, with a handle connected to the outer end of the screw on the mounting sleeve and a clamp connected to the inner end of the screw on the mounting sleeve via a swivel joint.

[0009] Furthermore, the clamp is provided with a slot, the radial cross-section of which is V-shaped.

[0010] Working principle and process:

[0011] In use, first insert the end of the gun barrel into the detection port on the chimney, allowing the positioning rod to pass through the detection port. Then, rotate the anti-slip groove to rotate the moving nut. Under the action of the first external thread, the moving nut moves to the right, thereby driving the second ear plate to move to the right through the rotating sleeve. Since the rotating sleeve and the moving nut are rotatably connected, there will be no movement interference between the second ear plate and the moving nut. The rightward movement of the second ear plate can drive the positioning rod to flip through the connecting rod, so that the positioning rod hooks onto the inner port of the detection port. Then, rotate the positioning sealing plate. Under the action of the second external thread, the positioning sealing plate moves to the left and fits against the outer port of the detection port, thereby completing the axial positioning of the gun barrel and achieving the initial fixation of the gun barrel. Then, rotate each handle one by one, driving each clamping plate to move inward through the screw and rotating joint, thereby allowing each clamping plate to be clamped onto the outer wall of the detection port through the slot, thereby completing the radial positioning of the gun barrel and achieving stable support for the gun barrel.

[0012] The advantages of this utility model compared with the prior art are:

[0013] The self-positioning flue gas sampling gun described in this invention has a self-positioning function, which eliminates the need for an external auxiliary support, reducing carrying difficulty. Furthermore, the positioning operation of the gun barrel is simple and convenient, effectively improving flue gas sampling efficiency. In addition, because the positioning sealing plate is in contact with the outer port of the detection port during sampling, it also prevents flue gas leakage. Attached Figure Description

[0014] Figure 1 This is a top view of an embodiment of the present invention.

[0015] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure at point AA.

[0016] In the diagram: 1. Gun barrel; 2. First external thread; 3. Moving nut; 4. Anti-slip texture; 5. Second external thread; 6. Rotating sleeve; 7. Second ear plate; 8. Sealing gasket; 9. Positioning sealing plate; 10. First ear plate; 11. Positioning rod; 12. Detection port; 13. Clamping plate; 14. Rotary joint; 15. Mounting sleeve; 16. Screw; 17. Handle; 18. Connecting rod; 19. Chimney. Detailed Implementation

[0017] The embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0018] Example 1:

[0019] like Figure 1 , Figure 2 As shown, the self-positioning flue gas sampling gun of this utility model includes a gun rod 1. The top and bottom of the outer side wall of the gun rod 1 are fixedly connected to a first ear plate 10. A positioning rod 11 is hinged to each of the two first ear plates 10. The outer side wall of the gun rod 1 is provided with a first external thread 2. A movable nut 3 is threadedly connected to the first external thread 2. A rotating sleeve 6 is rotatably connected to the left end of the movable nut 3. Two second ear plates 7, corresponding one-to-one with the two positioning rods 11, are fixedly connected to the rotating sleeve 6. A connecting rod 18 is hinged between each of the two sets of corresponding second ear plates 7 and the positioning rod 11. A second external thread 5 is provided in the middle of the movable nut 3. A positioning sealing plate 9 is threadedly connected to the second external thread 5. An installation sleeve 15 is connected to the positioning sealing plate 9. Multiple radial locking components are connected to the installation sleeve 15.

[0020] In use, first insert the end of the gun barrel 1 into the detection port 12 on the chimney 19, so that the positioning rod 11 passes through the detection port 12. Then rotate the anti-slip groove 4 to rotate the moving nut 3. Under the action of the first external thread 2, the moving nut 3 moves to the right, thereby driving the second ear plate 7 to move to the right through the rotating sleeve 6. Since the rotating sleeve 6 is rotatably connected to the moving nut 3, there will be no movement interference between the second ear plate 7 and the moving nut 3. The rightward movement of the second ear plate 7 can drive the positioning rod 11 to flip through the connecting rod 18, so that the positioning rod 11 hooks onto the inner port of the detection port 12. Then rotate the positioning sealing plate 9. Under the action of the second external thread 5, the positioning sealing plate 9 moves to the left and fits against the outer port of the detection port 12, thereby completing the axial positioning of the gun barrel 1 and achieving the initial fixation of the gun barrel 1. Then, the gun barrel 1 is radially positioned by multiple radial locking components, thereby achieving stable support of the gun barrel 1.

[0021] Example 2:

[0022] like Figure 1 , Figure 2 As shown, based on Example 1,

[0023] Furthermore, the right end of the movable nut 3 is provided with anti-slip texture 4 to facilitate the rotation of the movable nut 3;

[0024] Furthermore, a sealing gasket 8 is fixedly connected to the left side wall of the positioning sealing plate 9, which can improve the sealing effect on the detection port 12 and prevent the leakage of flue gas.

[0025] Furthermore, there are three or four radial locking components, and each radial locking component is evenly distributed circumferentially on the mounting sleeve 15, resulting in a better locking and positioning effect;

[0026] Furthermore, the radial locking assembly includes a screw 16 threaded through the mounting sleeve 15. One end of the screw 16 located on the outside of the mounting sleeve 15 is connected to a handle 17, and the other end of the screw 16 located on the inside of the mounting sleeve 15 is connected to a clamping plate 13 via a rotary joint 14. By rotating the handle 17, the screw 16 is rotated, and the clamping plate 13 is moved inward through the rotary joint 14 to clamp onto the outer wall of the detection port 12. The structure is simple and the operation is convenient.

[0027] Furthermore, the clamping plate 13 is provided with a slot, the radial cross section of which is V-shaped, which not only improves the clamping effect on the detection port 12, but also can be used for detection ports 12 of different diameters.

[0028] It should be noted that in the description of this utility model, the terms "top", "bottom", "left end", "right end", etc. are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model, and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A self-positioning flue gas sampling gun, comprising a gun barrel (1), characterized in that: The top and bottom of the outer side wall of the gun barrel (1) are fixedly connected to the first ear plate (10), and the two first ear plates (10) are hinged to the positioning rod (11). The outer side wall of the gun barrel (1) is provided with a first external thread (2), and a movable nut (3) is threadedly connected to the first external thread (2). The left end of the movable nut (3) is rotatably connected to a rotating sleeve (6). Two second ear plates (7) corresponding to the two positioning rods (11) are fixedly connected to the rotating sleeve (6). A connecting rod (18) is hinged between the two sets of corresponding second ear plates (7) and the positioning rods (11). The middle part of the movable nut (3) is provided with a second external thread (5), and a positioning sealing plate (9) is threadedly connected to the second external thread (5). An installation sleeve (15) is connected to the positioning sealing plate (9), and multiple radial locking components are connected to the installation sleeve (15).

2. The self-positioning flue gas sampling gun according to claim 1, characterized in that: The right end of the movable nut (3) is provided with anti-slip texture (4).

3. The self-positioning flue gas sampling gun according to claim 1, characterized in that: A sealing gasket (8) is fixedly connected to the left side wall of the positioning sealing plate (9).

4. The self-positioning flue gas sampling gun according to any one of claims 1 to 3, characterized in that: There are three or four radial locking components, and each radial locking component is evenly distributed circumferentially on the mounting sleeve (15).

5. The self-positioning flue gas sampling gun according to claim 4, characterized in that: The radial locking assembly includes a screw (16) threaded through the mounting sleeve (15), with a handle (17) connected to one end of the screw (16) on the outside of the mounting sleeve (15), and a clamp (13) connected to one end of the screw (16) on the inside of the mounting sleeve (15) via a rotating joint (14).

6. The self-positioning flue gas sampling gun according to claim 5, characterized in that: The clamp (13) is provided with a slot, and the radial cross section of the slot is V-shaped.

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