Flue gas sampling gun capable of preventing leakage of sampling port

Abstract

The utility model discloses a flue gas sampling gun that prevents sampling mouth leakage, relates to flue gas sampling technical field, including the gun barrel, one end of the gun barrel is rotatingly connected with a plurality of support in circumference array, each support close to the one side of the gun barrel hinge joint is connected with a connecting rod, the circumferential side of the gun barrel is connected with a connecting ring in sliding mode, the connecting ring is connected with the connecting rod. The ends, close to the connecting ring, of the connecting rods are hinged to the connecting ring, and the sides, away from the gun barrel, of the supports are jointly bonded with a sealing film with elastic deformation. According to the flue gas sampling gun capable of preventing leakage of the sampling port, the sampling gun is held by hand to insert the gun barrel into a to-be-detected hole, then the gun barrel is pushed inwards, meanwhile, a connecting ring is pushed to enable a sealing film to be unfolded to be umbrella-shaped, and the inner wall of the to-be-detected hole and the sampling port are sealed, so that flue gas in the sampling port is collected, and when the gun barrel is drawn out, the unfolding of the sealing film can still keep the sealing performance; and smoke leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas sampling, in particular to a flue gas sampling gun which can prevent leakage of a sampling port. Background Art

[0002] Flue gas is a mixture of gas and smoke, and is the main cause of atmospheric pollution in residential areas. The composition of flue gas is very complex. Gases include water vapor, sulfur dioxide, N2, O2, carbon monoxide, CO2 hydrocarbons, and nitrogen oxides, and smoke includes fuel ash, coal particles, oil droplets, and high-temperature cracking products. Therefore, flue gas pollution to the environment is a complex pollution of multiple poisons. In order to carry out special treatment of flue gas pollution, it is necessary to sample and test the flue gas in the area, so as to determine the composition of various substances in the flue gas and facilitate treatment. At present, flue gas sampling guns are generally used to sample flue gas.

[0003] For example, a Chinese patent with publication number CN219495823U and titled "A flue gas sampling gun capable of preventing sampling port leakage" includes a sampling gun, which is characterized in that a connecting pipe is connected to the right side of the sampling gun, the other end of the connecting pipe is connected to a sampling box, a gun barrel is fixedly installed on the left side of the sampling gun, and a sealing assembly is provided on the outer wall of the gun barrel.

[0004] Although the smoke sampling gun in the above patent that can prevent the sampling port from leaking is practical and convenient, it also has shortcomings. After the sampling is completed, when the gun barrel is pulled out, the smoke between the muzzle of the gun barrel and the sleeve plate will still be carried out, and smoke leakage will still occur, and the sealing effect is low. Utility Model Content

[0005] The utility model aims to provide a smoke sampling gun which can prevent the leakage of the sampling port, so as to solve the shortcomings of the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: the smoke sampling gun for preventing leakage of the sampling port comprises a gun barrel, one end of the gun barrel is rotatably connected to a plurality of brackets in a circular array, each of the brackets is hingedly connected to a connecting rod on a side close to the gun barrel, a connecting ring is slidably connected to the peripheral side of the gun barrel, one end of each connecting rod close to the connecting ring is hinged to the connecting ring, and a sealing film with elastic deformation is bonded to a side of each bracket away from the gun barrel.

[0007] Furthermore, one end of the gun barrel is rotatably connected to a plurality of rotating shafts in a circular array, each of the brackets is sleeved with each rotating shaft in a one-to-one correspondence, and each of the rotating shafts is sleeved with a torsion spring.

[0008] Furthermore, the gun barrel is provided with a limit assembly, which includes a clamping block, a spring and a slider. The gun barrel is provided with a first slide groove and a second slide groove communicated with the first slide groove. The clamping block is vertically slidably connected in the first slide groove, and the two ends of the spring are respectively fixedly connected to the bottom wall of the first slide groove and the bottom of the clamping block. The slider is horizontally slidably connected in the second slide groove. A second groove is provided on a side of the clamping block close to the slider, and one end of the slider close to the clamping block is engaged with the second groove.

[0009] Furthermore, the top end of the block is inclined toward the sealing film, the slider is in a horizontal L-shape, and one end of the slider close to the block is inclined toward the bottom wall of the first sliding groove.

[0010] Furthermore, a high temperature resistant layer is coated on the sealing film.

[0011] Compared with the prior art, the utility model provides the following beneficial effects: the smoke sampling gun that prevents leakage from the sampling port, the portable sampling gun inserts the gun barrel into the hole to be detected, and then pushes it inward, and at the same time pushes the connecting ring through the connecting rod and the bracket to make the sealing film unfold into an umbrella shape, so as to seal the inner wall of the hole to be detected and the sampling port, thereby collecting the smoke in the sampling port, and when the gun barrel is pulled out, the unfolding of the sealing film can still maintain the sealing performance to avoid leakage of smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0013] Figure 1 The overall structural diagram provided for the embodiment of the utility model;

[0014] Figure 2 A top view of the overall structure provided for an embodiment of the utility model;

[0015] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0016] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0017] Figure 5 for Figure 3 Enlarged view of point C in the middle.

[0018] Explanation of the accompanying drawings: 1. gun barrel; 2. sealing membrane; 3. bracket; 4. connecting rod; 5. connecting ring; 6. rotating shaft; 7. torsion spring; 8. first groove; 9. first slide groove; 10. spring; 11. block; 12. second groove; 13. second slide groove; 14. slider. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] See also Figure 1-5 A technical solution provided by an embodiment of the utility model: the smoke sampling gun for preventing leakage of the sampling port comprises a gun barrel 1, one end of the gun barrel 1 is rotatably connected to a plurality of brackets 3 in a circular array, each bracket 3 is hinged to a connecting rod 4 on a side close to the gun barrel 1, a connecting ring 5 is slidably connected to the side surface of the gun barrel 1, one end of each connecting rod 4 close to the connecting ring 5 is hinged to the connecting ring 5, and a sealing film 2 with elastic deformation is bonded to the side of each bracket 3 away from the gun barrel 1. Specifically, a plurality of first grooves 8 are opened in a circular array at one end of the gun barrel 1, and each bracket 3 is rotatably connected to each first slide groove 9 in a one-to-one correspondence.

[0021] As a preferred technical solution, one end of the gun barrel 1 is rotatably connected to a plurality of rotating shafts 6 in a circular array, each bracket 3 is sleeved with each rotating shaft 6 in a one-to-one correspondence, and each rotating shaft 6 is sleeved with a torsion spring 7. Specifically, through the elastic deformation of the torsion spring 7, the torsion spring 7 drives the rotating shaft 6 to rotate automatically, so that the sealing membrane 2 is always automatically unfolded in the hole to be detected and automatically adapts to the inner diameter of the hole to be detected, without the need to manually push the connecting ring 5.

[0022] As a preferred technical solution, a limit assembly is provided on the barrel 1, and the limit assembly includes a block 11, a spring 10 and a slide block 14. The barrel 1 is provided with a first slide groove 9 and a second slide groove 13 communicating with the first slide groove 9. The block 11 is vertically slidably connected in the first slide groove 9, and the two ends of the spring 10 are respectively fixedly connected to the bottom wall of the first slide groove 9 and the bottom of the block 11. The slide block 14 is horizontally slidably connected in the second slide groove 13. A second groove 12 is provided on one side of the block 11 close to the slide block 14, and the slide block 14 is close to the second groove 12. One end of the block 11 is engaged with the second groove 12. Specifically, when the sampling gun is not in use, the two ends of the connecting ring 5 are respectively in contact with the side close to the block 11 and the slider 14, so that the connecting ring 5 can be fixed between the block 11 and the slider 14, so that the sealing film 2 is in a contracted state. When in use, the slider 14 is pushed to move the slider 14 toward the block 11, so that the block 11 is stored in the first slide groove 9. Through the elastic deformation of the torsion spring 7, the connecting ring 5 slides toward the gun head of the barrel 1 to unfold the sealing film 2.

[0023] As a preferred technical solution, the top of the block 11 is inclined toward the sealing membrane 2, the slider 14 is in a horizontal L-shape, and the end of the slider 14 close to the block 11 is inclined toward the bottom wall of the first slide groove 9. Specifically, the top of the block 11 is inclined to facilitate the retraction of the connecting ring 5, the connecting ring 5 slides along the top of the block 11 to squeeze the block 11, and the end of the slider 14 close to the block 11 is inclined to facilitate the retraction of the connecting ring 5, the end of the slider 14 close to the block 11 is squeezed by the second groove 12 when the slider 14 slides toward the block 11, and the block 11 is received in the first slide groove 9, so as to prevent the block 11 from hindering the movement of the connecting ring 5.

[0024] As a preferred technical solution, the sealing film 2 is coated with a high temperature resistant layer. Specifically, since the flue gas has certain high temperature characteristics, coating the sealing film 2 with a high temperature resistant layer can prevent the high temperature flue gas from damaging the sealing film 2.

[0025] Working principle: The smoke sampling gun that prevents leakage from the sampling port, the portable sampling gun inserts the gun barrel 1 into the hole to be detected, pushes the slider 14, and moves the slider 14 toward the direction close to the block 11, so that the block 11 is stored in the first slide groove 9, and through the elastic deformation of the torsion spring 7, the connecting ring 5 slides toward the gun head of the gun barrel 1, and the sealing film 2 is unfolded into an umbrella shape through the connecting rod 4 and the bracket 3, and then pushed inward to seal the inner wall of the hole to be detected and the sampling port, thereby collecting the smoke in the sampling port, when the gun barrel 1 is pulled out, the unfolding of the sealing film 2 can still maintain the sealing to prevent smoke leakage.

[0026] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flue gas sampling gun that prevents leakage from the sampling port. It is characterized in that The invention comprises a gun barrel (1), one end of which is rotatably connected to a plurality of brackets (3) in a circular array, each bracket (3) being hingedly connected to a connecting rod (4) on a side close to the gun barrel (1), a connecting ring (5) being slidably connected to a peripheral side of the gun barrel (1), each connecting rod (4) having an end close to the connecting ring (5) being hingedly connected to the connecting ring (5), and each bracket (3) having a side away from the gun barrel (1) being bonded to a sealing film (2) having elastic deformation.

2. A flue gas sampling gun for preventing sampling port leakage according to claim 1, It is characterized in that One end of the gun barrel (1) is connected to a plurality of rotating shafts (6) in a circular array for rotation, each of the brackets (3) is sleeved with each of the rotating shafts (6) in a one-to-one correspondence, and each of the rotating shafts (6) is sleeved with a torsion spring (7).

3. A flue gas sampling gun for preventing sampling port leakage according to claim 1, It is characterized in that The gun barrel (1) is provided with a limit assembly, which comprises a clamping block (11), a spring (10) and a slide block (14). The gun barrel (1) is provided with a first slide groove (9) and a second slide groove (13) communicating with the first slide groove (9). The clamping block (11) is vertically slidably connected in the first slide groove (9), and two ends of the spring (10) are respectively fixedly connected to the bottom wall of the first slide groove (9) and the bottom of the clamping block (11). The slide block (14) is horizontally slidably connected in the second slide groove (13). A second groove (12) is provided on a side of the clamping block (11) close to the slide block (14), and one end of the slide block (14) close to the clamping block (11) is engaged with the second groove (12).

4. A flue gas sampling gun for preventing sampling port leakage according to claim 3, It is characterized in that The top end of the block (11) is inclined toward the sealing membrane (2), the sliding block (14) is in a horizontal L-shape, and the end of the sliding block (14) close to the block (11) is inclined toward the bottom wall of the first sliding groove (9).

5. A flue gas sampling gun for preventing sampling port leakage according to claim 1, It is characterized in that The sealing film (2) is coated with a high temperature resistant layer.

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