Sampling device for waste gas detection

Abstract

The utility model discloses a sampling device for waste gas detection, which comprises a sampling barrel main body, the sampling barrel main body is composed of a piston head, a piston rod and a conical end cover, the surface of one end of the sampling barrel main body is uniformly provided with thread grooves, and the inner side of each thread groove is provided with a locking bolt. A threaded hole is formed in the surface of the end, connected with the sampling barrel body, of the conical end cover, the locking bolt penetrates through the threaded hole and extends to the inner side of a threaded groove formed in the surface of the sampling barrel body, and arc-shaped fixing pieces are evenly arranged on the surface of the piston rod. Through matching arrangement of a T-shaped telescopic hole, a clamping block and an arc-shaped fixing piece, a piston rod of a to-be-detected sampling barrel can be rotated for fixing after sampling, so that the situation that the piston rod leaks gas or the volume of to-be-detected gas has an error due to external influence is effectively avoided, and the situation that the detection result of each gas content in the gas has an error is reduced; the conical end cover and the sampling barrel main body are detachable, so that personnel can conveniently detach the conical end cover to clean dirt deposited on the inner wall of the sampling barrel.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, and in particular to a sampling device for detecting exhaust gas. Background Technology

[0002] As society continues to progress, people's requirements for the environment in their daily lives are constantly increasing. In order to improve the living environment, people will sample and test the toxic and harmful gases emitted in production or daily life to ensure that the exhaust gas meets the emission standards. In the process of exhaust gas testing, it is necessary to use sampling devices to sample the exhaust gas so that it can be tested later.

[0003] As disclosed in the authorization announcement number CN219284772U, a sampling device is connected to a baffle by two sets of springs. The springs are in a compressed state, and the opening component is used to open the baffle to discharge the waste gas in the sampling barrel. This prior art still has the following problems when in use: the piston rod of the sampling barrel is not fixed after sampling, and it is easy to cause air leakage or errors in the volume of the gas to be measured due to external influences, which will cause errors in the detection results of the content of each gas in the gas. At the same time, the sealing rod of the air inlet is not fixed, which can easily cause the baffle to loosen and cause air leakage. In addition, the end cap of the air inlet is not removable, and dirt is easy to accumulate on the inner wall of the sampling barrel, which is inconvenient to clean. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this utility model provides a sampling device for exhaust gas detection. Through the combination of a T-shaped telescopic hole, a locking block, and an arc-shaped fixing plate, the piston rod of the sampling cylinder can be rotated to fix the sample after sampling. This effectively avoids leakage or errors in the volume of the gas being measured due to external influences on the piston rod, reducing errors in the detection results of the content of various gases in the gas. The conical end cap is detachable from the main body of the sampling cylinder, making it easy for personnel to remove the conical end cap to clean the dirt deposited on the inner wall of the sampling cylinder.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a sampling device for exhaust gas detection, comprising a sampling cylinder body, the sampling cylinder body being composed of a piston head, a piston rod, and a conical end cap, wherein a threaded groove is uniformly formed on one end surface of the sampling cylinder body, and a locking bolt is installed inside the threaded groove; a threaded hole is formed on the end surface of the conical end cap that connects to the sampling cylinder body, and the locking bolt extends through the threaded hole to the inside of the threaded groove formed on the surface of the sampling cylinder body; an arc-shaped fixing plate is uniformly arranged on the surface of the piston rod; a fixing plate is fixedly arranged on one end surface of the sampling cylinder body, and a T-shaped telescopic hole is formed at the center of the fixing plate; a locking block is fixedly arranged on the inner wall of the T-shaped telescopic hole, and the arc-shaped fixing plate engages with the locking block.

[0006] As a preferred embodiment of this utility model, a U-shaped slide rod is installed inside the air inlet of the conical end cap. A threaded rod is fixedly provided at one end of the U-shaped slide rod, and a rubber plug is sleeved on the surface of the threaded rod. A locking nut is sleeved on the surface of the rubber plug at one end of the threaded rod. A rack is provided on the inner wall of the U-shaped slide rod, and a gear is installed on the surface of the rack. A rotating rod is fixedly provided at the center of the gear. A limit ring is fixedly provided on the surface of one end of the rotating rod. A fixing block is provided on one side surface of the air inlet of the conical end cap. A telescopic hole is opened on the side surface of the fixing block. Slots are evenly opened on the surface of the limit ring. A spring locking component is installed inside the block. The spring locking component consists of a pin, a telescopic spring, a pull ring, a telescopic hole, and a slot. One end of the pin is located inside the slot. The telescopic spring is sleeved on the surface of the pin and is located inside the telescopic hole. A through hole is opened between the air inlet surface of the conical end cap and the inside of the fixed block. An anti-slip fixing cap is fixedly installed on the surface of the rotating rod extending through the through hole to the outside of the fixed block. The limiting ring is located inside the through hole. A limiting groove is opened on the inner wall of the air inlet of the conical end cap. A slider is provided on the surface of the U-shaped slider, and one end of the slider is located inside the limiting groove.

[0007] As a preferred technical solution of this utility model, an installation groove is provided on the inner side of the conical end cap, and a filter screen is installed on the inner side of the installation groove. One end of the sampling cylinder body extends from the surface inside the conical end cap to the outer surface of the filter screen.

[0008] As a preferred technical solution of this utility model, a sealing sleeve is provided on the surface of one end of the sampling cylinder body located inside the conical end cap.

[0009] As a preferred embodiment of this utility model, a transparent observation window is provided on the outer surface of the sampling tube body.

[0010] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0011] 1. With the combination of T-shaped telescopic holes, clamping blocks, and arc-shaped fixing plates, the piston rod of the sampling cylinder can be rotated to fix it after sampling, effectively avoiding the situation where the piston rod is affected by external factors, resulting in air leakage or errors in the volume of the gas to be tested, and reducing the possibility of errors in the detection results of the content of various gases in the gas. The conical end cap and the main body of the sampling cylinder are detachable, making it easy for personnel to remove the conical end cap to clean the dirt deposited on the inner wall of the sampling cylinder.

[0012] 2. The combination of limiting slide groove, U-shaped slide rod, rubber plug, slider, gear, rotating rod, and spring locking component makes the rubber plug seal the air inlet more stable and the rubber plug easier to open; the combination of mounting groove and filter screen facilitates the effective filtration of fixed particles contained in the gas to be tested; and the transparent observation window allows personnel to observe the color of the gas to be tested. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall side cross-sectional structure of this utility model.

[0014] Figure 2 This is a cross-sectional view of the piston rod and sampling cylinder of this utility model.

[0015] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the air inlet of this utility model.

[0016] The components include: 1. Sampling cylinder body; 2. Piston head; 3. Piston rod; 4. Conical end cap; 5. Mounting groove; 6. Filter screen; 7. Sealing sleeve; 8. Locking bolt; 9. Limiting slide groove; 10. U-shaped slide rod; 11. Rubber plug; 12. Sliding block; 13. Gear; 14. Rotating rod; 15. Spring locking component; 16. T-shaped telescopic hole; 17. Clamping block; 18. Arc-shaped fixing plate; 19. Transparent observation window; 20. Limiting ring. Detailed Implementation

[0017] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation are all within the protection scope of this utility model without creative effort.

[0018] For an example, please refer to... Figure 1 , Figure 2 , Figure 3As shown, this utility model provides a sampling device for exhaust gas detection, including a sampling cylinder body 1. The sampling cylinder body 1 is composed of a piston head 2, a piston rod 3, and a conical end cap 4. A series of threaded grooves are evenly formed on one end surface of the sampling cylinder body 1, and a locking bolt 8 is installed inside the threaded grooves. A threaded hole is formed on the end surface of the conical end cap 4 that connects to the sampling cylinder body 1. The locking bolt 8 passes through the threaded hole and extends to the inside of the threaded grooves on the surface of the sampling cylinder body 1. Arc-shaped fixing plates 18 are evenly arranged on the surface of the piston rod 3. A fixing plate is fixedly mounted on one end surface of the sampling cylinder body 1, with the center of the fixing plate... A T-shaped telescopic hole 16 is provided, and a locking block 17 is fixedly installed on the inner wall of the T-shaped telescopic hole 16. An arc-shaped fixing piece 18 engages with the locking block 17. Through the combination of the T-shaped telescopic hole 16, the locking block 17, and the arc-shaped fixing piece 18, the piston rod 3 of the sampling cylinder can be rotated to fix it after sampling. This effectively avoids the situation where the piston rod 3 is affected by external factors, resulting in gas leakage or errors in the volume of the gas to be tested, and reduces the possibility of errors in the detection results of the content of each gas in the gas. The conical end cap 4 is detachable from the sampling cylinder body 1, which makes it easy for personnel to remove the conical end cap 4 to clean the dirt deposited on the inner wall of the sampling cylinder.

[0019] like Figure 1 , Figure 2 , Figure 3 As shown, a U-shaped slide rod 10 is installed inside the air inlet of the conical end cap 4. A threaded rod is fixedly installed at one end of the U-shaped slide rod 10, and a rubber plug 11 is fitted on the surface of the threaded rod. A locking nut is fitted through the surface of the rubber plug 11 at one end of the threaded rod. A rack is provided on the inner wall of the U-shaped slide rod 10, and a gear 13 is installed on the surface of the rack. A rotating rod 14 is fixedly installed at the center of the gear 13. A limit ring 20 is fixedly installed on the surface of one end of the rotating rod 14. A fixing block is provided on one side surface of the air inlet of the conical end cap 4. A telescopic hole with a central shape is opened on the side surface of the fixing block. Slots are evenly opened on the surface of the limit ring 20. A spring locking component 15 is installed inside the fixing block. The spring locking component 15 is composed of a pin, a telescopic spring, a pull ring, a telescopic hole with a central shape, and slots. One end of the pin is located inside the slot, and a telescopic spring is sleeved on the surface of the pin. The telescopic spring is located inside the telescopic hole. The surface of the air inlet of the conical end cap 4 and the inside of the fixed block are provided with a through hole. The rotating rod 14 extends through the through hole to the surface of the outer side of the fixed block and is fixedly provided with an anti-slip fixing cap. The limiting ring 20 is located inside the through hole. The inner wall of the air inlet of the conical end cap 4 is provided with a limiting groove 9. The surface of the U-shaped sliding rod 10 is provided with a slider 12, and one end of the slider 12 is located inside the limiting groove 9. Through the combination of the limiting groove 9, the U-shaped sliding rod 10, the rubber plug 11, the slider 12, the gear 13, the rotating rod 14, and the spring locking part 15, the rubber plug 11 seals the air inlet more stably and opens the rubber plug 11 more conveniently.

[0020] like Figure 1As shown, an installation groove 5 is provided on the inner side of the conical end cap 4, and a filter screen 6 is installed inside the installation groove 5. One end of the sampling cylinder body 1 extends from the inner surface of the conical end cap 4 to the outer surface of the filter screen 6. The combination of the installation groove 5 and the filter screen 6 facilitates the effective filtration of fixed particles contained in the gas to be tested.

[0021] like Figure 1 As shown, a sealing sleeve 7 is fitted on the surface of one end of the sampling cylinder body 1, which is inside the conical end cap 4; by fitting the sealing sleeve 7 on the surface of one end of the sampling cylinder body 1, the sealing performance at the connection between the conical end cap 4 and the sampling cylinder body 1 is better.

[0022] like Figure 1 As shown, a transparent observation window 19 is provided on the outer surface of the sampling tube body 1; by providing a transparent observation window 19, it is convenient for personnel to observe the color of the gas to be tested.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sampling device for detecting exhaust gas, comprising a sampling cylinder body (1), characterized in that: The sampling cylinder body (1) is composed of a piston head (2), a piston rod (3), and a conical end cap (4). A threaded groove is evenly opened on one end surface of the sampling cylinder body (1), and a locking bolt (8) is installed inside the threaded groove. A threaded hole is opened on the end surface of the conical end cap (4) that is connected to the sampling cylinder body (1). The locking bolt (8) passes through the threaded hole and extends to the inside of the threaded groove on the surface of the sampling cylinder body (1). An arc-shaped fixing piece (18) is evenly arranged on the surface of the piston rod (3). A fixing plate is fixedly arranged on one end surface of the sampling cylinder body (1). A T-shaped telescopic hole (16) is opened at the center of the fixing plate. A locking block (17) is fixedly arranged on the inner wall of the T-shaped telescopic hole (16). The arc-shaped fixing piece (18) and the locking block (17) are engaged.

2. The sampling device for exhaust gas detection according to claim 1, characterized in that: A U-shaped slide rod (10) is installed inside the air inlet of the conical end cap (4). A threaded rod is fixedly provided at one end of the U-shaped slide rod (10). A rubber plug (11) is sleeved on the surface of the threaded rod. A locking nut is sleeved on the surface of the rubber plug (11) through one end of the threaded rod. A rack is provided on the inner wall of the U-shaped slide rod (10). A gear (13) is installed on the surface of the rack. A rotating rod (14) is fixedly provided at the center of the gear (13). A limit ring (20) is fixedly provided on the surface of one end of the rotating rod (14). A fixing block is provided on one side surface of the air inlet of the conical end cap (4). A telescopic hole is opened on the side surface of the fixing block. Slots are evenly opened on the surface of the limit ring (20). The inner side of the fixing block A spring locking component (15) is installed. The spring locking component (15) is composed of a pin, a telescopic spring, a pull ring, a telescopic hole and a slot. One end of the pin is located inside the slot. The telescopic spring is sleeved on the surface of the pin and is located inside the telescopic hole. The air inlet surface of the conical end cap (4) and the inner side of the fixing block are provided with a through hole. The rotating rod (14) extends through the through hole to the outer side of the fixing block and is fixedly provided with an anti-slip fixing cap. The limiting ring (20) is located inside the through hole. The inner wall of the air inlet of the conical end cap (4) is provided with a limiting groove (9). The surface of the U-shaped sliding rod (10) is provided with a slider (12). One end of the slider (12) is located inside the limiting groove (9).

3. The sampling device for exhaust gas detection according to claim 1, characterized in that: The conical end cap (4) has an installation groove (5) on its inner side, and a filter screen (6) is installed inside the installation groove (5). One end of the sampling cylinder body (1) extends from the surface inside the conical end cap (4) to the outer surface of the filter screen (6) on one side.

4. A sampling device for exhaust gas detection according to claim 1, characterized in that: The sampling tube body (1) has a sealing sleeve (7) fitted on the surface inside the conical end cap (4) at one end.

5. A sampling device for exhaust gas detection according to claim 1, characterized in that: A transparent observation window (19) is provided on the outer surface of the sampling tube body (1).

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