Safe sampling device for chemical gas
By adopting a tie rod structure with removable rubber hood and scale marks in the chemical gas sampling device, the problem of gas leakage during the sampling process is solved, quantitative sampling and sealing are achieved, and the accuracy and safety of sampling results are ensured.
Patent Information
- Application Number
- CN202421676878.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-07-16
AI Technical Summary
Existing chemical gas sampling devices are prone to gas leakage during the sampling process, affecting detection accuracy and safety.
A chemical gas safety sampling device is designed, using a removable rubber holster and a tie rod structure, and the piston is driven by the tie rod for quantitative sampling, and the sampling nozzle is sealed with a rubber holster after sampling, and the sealing ring is combined to ensure the sealing at the connection.
The accuracy and sealing of gas sampling are achieved, leakage is prevented, and the accuracy and safety of sampling results are ensured.
Smart Images
Figure CN223166407U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical gas detection, in particular to a chemical gas safety sampling device. Background Technique
[0002] Chemical gases are harmful gases discharged from chemical plants during chemical production. There are often many types of pollutants in chemical gases, with complex physical and chemical properties and different toxicities, which seriously pollute the environment and affect human health. Therefore, chemical gases need to be detected before being discharged. Only after the detection meets the emission standards can they be discharged into the atmosphere. A sampling device is used during gas detection to detect the sampled gas.
[0003] During actual use, the sampling port is usually placed in the gas, and then the handle is pulled to move the piston. The inside of the sampling cylinder is in a vacuum state, and the gas will enter the sampling cylinder through the sampling port, and then the gas is detected. During the transfer of the gas, the handle usually remains stationary, and this method is likely to cause gas leakage from the sampling port.
[0004] Therefore, a new type of chemical gas safety sampling device is proposed for the above problems. Content of the Utility Model
[0005] In order to solve the problems existing in the prior art, an embodiment of the utility model provides a chemical gas safety sampling device, which includes a sampling cylinder (1). A piston (3) is arranged inside the sampling cylinder (1). The rear side of the piston (3) is fixedly connected to the front end of a pull rod (2). The rear end of the pull rod (2) extends to the outside of the sampling cylinder (1) and is fixed with a pull handle (9). A rear cover (10) is arranged outside the rear end of the sampling cylinder (1). A circular hole is opened in the middle of the rear cover (10). The pull rod (2) passes through the circular hole and fits with the hole wall of the circular hole. A front cover (4) is arranged outside the front end of the sampling cylinder (1). A fixed cover (5) is fixed on the front side of the front cover (4). A sampling nozzle (8) is fixed on the front side of the fixed cover (5). The sampling cylinder (1), the front cover (4), the fixed cover (5) and the sampling nozzle (8) are sequentially communicated. A rubber sleeve (6) is movably sleeved on the front end of the sampling nozzle (8). A limiting groove (7) which is adapted to the caliber and position of the sampling nozzle (8) is fixed on one side inside the rubber sleeve (6).
[0006] Optionally, threads (13) are arranged on the outer sides of both ends of the sampling cylinder (1). The rear cover (10) and the front cover (4) are in threaded connection with the sampling cylinder (1).
[0007] Optionally, sealing rings (12) are arranged on the sides of the inner parts of the rear cover (10) and the front cover (4) that are in contact with the sampling cylinder (1).
[0008] Optionally, scale lines (11) are provided on the outer sides of the pull rods (2).
[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0010] Before sampling, the rubber sleeve can be removed from the outside of the sampling nozzle, and then the sampling nozzle is used for gas sampling; during sampling, by pulling the pull handle backward, the pull handle drives the piston to pull through the pull rod. At this time, the gas will be drawn into the inside of the sampling cylinder through the sampling nozzle. Through the scale lines on the outer side of the pull rod, it is convenient to observe in real time during sampling, and thus quantitative sampling can be carried out to ensure the accuracy of the sampling result; after sampling, the rubber sleeve can be put on the outside of the sampling nozzle. By pushing the rubber sleeve to one side, one side of the rubber sleeve will fit with one side of the fixed cover, and the limiting groove wraps the sampling nozzle, thereby sealing the sampling nozzle to prevent gas leakage; during cleaning, the rear cover and the front cover are rotated to be separated from the sampling cylinder, and the inside of the sampling cylinder can be cleaned, thus ensuring the accuracy during the next sampling. The sealing ring can ensure the sealing performance at the connection between the rear cover and the front cover and the sampling cylinder, and thus ensure the sealing performance during sampling. Description of the Drawings
[0011] The following describes an implementation manner of a chemical gas safety sampling device of the present utility model with reference to the drawings. The drawings are as follows:
[0012] Figure 1 It is a front view sectional structure schematic diagram of the present utility model;
[0013] Figure 2 It is a front view structure schematic diagram of the present utility model;
[0014] Figure 3 It is a three-dimensional structure schematic diagram of the present utility model;
[0015] Figure 4 It is a front view disassembled schematic diagram of the present utility model.
[0016] Description of the Drawings: 1. Sampling cylinder; 2. Pull rod; 3. Piston; 4. Front cover; 5. Fixed cover; 6. Rubber sleeve; 7. Limiting groove; 8. Sampling nozzle; 9. Pull handle; 10. Rear cover; 11. Scale line; 12. Sealing ring; 13. Thread. Specific Embodiments
[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0018] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model, they are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0019] In addition, if descriptions such as "first" and "second" are involved in the present utility model, they are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0020] The following describes the specific implementation of the present utility model in detail with reference to specific embodiments:
[0021] Refer to Figures 1-4 , an industrial gas safety sampling device provided by an embodiment of the present utility model includes a sampling cylinder 1. A piston 3 is arranged inside the sampling cylinder 1. The rear side of the piston 3 is fixedly connected to the front end of a pull rod 2. The rear end of the pull rod 2 extends to the outside of the sampling cylinder 1 and is fixed with a pull handle 9. A rear cover 10 is arranged outside the rear end of the sampling cylinder 1. A circular hole is opened in the middle of the rear cover 10. The pull rod 2 passes through the circular hole and fits with the hole wall of the circular hole. A front cover 4 is arranged outside the front end of the sampling cylinder 1. A fixed cover 5 is fixed to the front side of the front cover 4. A sampling nozzle 8 is fixed to the front side of the fixed cover 5. The sampling cylinder 1, the front cover 4, the fixed cover 5, and the sampling nozzle 8 are sequentially communicated. A rubber sleeve 6 is movably sleeved on the front end of the sampling nozzle 8. A limiting groove 7 adapted to the caliber and position of the sampling nozzle 8 is fixed to one side inside the rubber sleeve 6.
[0022] Threads 13 are arranged on the outer sides of both ends of the sampling cylinder 1. The rear cover 10 and the front cover 4 are both threadedly connected to the sampling cylinder 1, which is convenient for disassembling the sampling device to clean the inside of the sampling cylinder 1.
[0023] Sealing rings 12 are arranged on the sides of the inner parts of the rear cover 10 and the front cover 4 that are in contact with the sampling cylinder 1. The sealing rings 12 can ensure the sealing performance of the connection between the connection port 10 and the installation port 4 and the sampling cylinder 1;
[0024] Scale lines 11 are arranged on the outer side of the pull rod 2, which is convenient for real-time observation during sampling.
[0025] Working principle: Before sampling, the rubber sleeve 6 can be removed from the outside of the sampling nozzle 8, and then the sampling nozzle 8 is used for gas sampling; during sampling, by pulling the pull handle 9 backward, the pull handle 9 drives the piston 3 to pull through the pull rod 2. At this time, the gas will be drawn into the interior of the sampling cylinder 1 through the sampling nozzle 8. Through the scale line 11 on the outside of the pull rod 2, it is convenient to observe in real time during sampling, and thus quantitative sampling can be carried out to ensure the accuracy of the sampling result; after sampling, the rubber sleeve 6 can be sleeved on the outside of the sampling nozzle 8. By pushing the rubber sleeve 6 to one side, one side of the rubber sleeve 6 will fit with one side of the fixed cover 5, and the limiting groove 7 wraps the sampling nozzle 8, thereby sealing the sampling nozzle 8 to prevent gas leakage; during cleaning, the rear cover 10 and the front cover 4 are rotated to be separated from the sampling cylinder 1, and the interior of the sampling cylinder 1 can be cleaned, thereby ensuring the accuracy during the next sampling. The sealing ring 12 can ensure the sealing performance at the connection between the rear cover 10 and the front cover 4 and the sampling cylinder 1, and thus ensure the sealing performance during sampling.
[0026] So far in the embodiments of the present invention, the technical solutions of the present invention have been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or replacements to the relevant technical features, and the technical solutions after these changes or replacements will all fall within the protection scope of the present invention.
Claims
1. A chemical gas safety sampling device, comprising a sampling cylinder (1), characterized in that, A piston (3) is arranged inside the sampling cylinder (1). The rear side of the piston (3) is fixedly connected to the front end of a pull rod (2). The rear end of the pull rod (2) extends outside the sampling cylinder (1) and is fixed with a pull handle (9). A rear cover (10) is arranged outside the rear end of the sampling cylinder (1). A circular hole is formed in the middle of the rear cover (10). The pull rod (2) passes through the circular hole and fits against the hole wall of the circular hole. A front cover (4) is arranged outside the front end of the sampling cylinder (1). A fixed cover (5) is fixed to the front side of the front cover (4). A sampling nozzle (8) is fixed to the front side of the fixed cover (5). The sampling cylinder (1), the front cover (4), the fixed cover (5) and the sampling nozzle (8) are sequentially communicated. A rubber sleeve (6) is movably sleeved on the front end of the sampling nozzle (8). A limiting groove (7) which is adapted to the caliber and position of the sampling nozzle (8) is fixed to one side inside the rubber sleeve (6).
2. The chemical gas safety sampling device according to claim 1, characterized in that, Threads (13) are arranged on the outer sides of both ends of the sampling cylinder (1). The rear cover (10) and the front cover (4) are both threadedly connected to the sampling cylinder (1).
3. The chemical gas safety sampling device according to claim 1, characterized in that, Sealing rings (12) are arranged on the sides of the inner parts of the rear cover (10) and the front cover (4) which are in contact with the sampling cylinder (1).
4. The chemical gas safety sampling device according to claim 1, wherein Scale lines (11) are arranged on the outer side of the pull rod (2).