Gas sampling device for gas detection

Abstract

The utility model relates to the technical field of gas sampling devices for gas detection, and solves the problems that when an electric structure is used for operating a sampling device and flammable and explosive gas is sampled, the flammable and explosive gas can be directly ignited once electric power in the electric structure breaks down to generate electric sparks or short circuits, so that the flammable and explosive gas is relatively high in risk; according to the scheme, the problems that the application range of a sampling device is small, and practicability is poor are solved. The gas sampling device for gas detection comprises a holding cylinder, an automatic opening and closing assembly is sleeved with the holding cylinder, a support is fixedly connected to one end of the interior of the holding cylinder, an air exhaust assembly is slidably connected to the interior of the support, the air exhaust assembly comprises a sliding rod slidably connected to the interior of the support, and a piston is fixedly connected to one end of the sliding rod; the surface of the piston is sleeved with a sealing ring, one end of the sliding rod is fixedly connected with a pulling plate, and the surface of the pulling plate is provided with anti-skid lines used for increasing friction force.

Description

Technical Field

[0001] The utility model relates to the technical field of a gas sampling device for gas detection, in particular to a gas sampling device for gas detection. Background Art

[0002] Publication number CN221765023U discloses a gas sampling device for gas detection, which includes a fixed base plate. The outer surface of one end of the fixed base plate is provided with a protective tube and a gas sampling bottle. The protective tube is located around the gas sampling bottle. The outer surface of the other end of the fixed base plate is provided with a driving motor and an electric control handle.

[0003] The gas sampling bottle provided therein can be installed on a fixed base plate when in use, and the gas sampling bottle can be protected by a protective tube, which is convenient for carrying the gas sampling bottle. The electric control handle can be convenient for holding the sampling device when in use, which is convenient for operating the sampling device and carrying and taking, which is relatively convenient. At most four groups of gas sampling bottles can be installed around the electric push rod on the fixed base plate, so four gases can be sampled and processed at the same time, which is convenient for storing the gas and has a high sampling efficiency.

[0004] This comparative document has the effect of facilitating the operation of the sampling device, but the defects it brings are also more obvious. For example, when using an electric structure to operate the sampling device, when sampling flammable and explosive gases, once the power inside the electric structure fails to generate electric sparks or short circuits, it will directly ignite the flammable and explosive gases, which is very dangerous. This solution has a small scope of application for sampling devices and poor practicality. Utility Model Content

[0005] In order to address the shortcomings of the existing technology, the present invention provides a gas sampling device for gas detection, which solves the problem that when using an electric structure to operate the sampling device, if the power inside the electric structure fails and produces sparks or short circuits when sampling flammable and explosive gases, the flammable and explosive gases will be directly ignited, which is very dangerous. This solution has a small scope of application for the sampling device and poor practicality.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a gas sampling device for gas detection, comprising a grip tube, wherein a self-opening and closing component is sleeved inside the grip tube, and a bracket is fixedly connected to one end of the grip tube, and a gas extraction component is slidably connected to the inside of the bracket;

[0007] The air extraction component includes a sliding rod slidably connected to the inside of the bracket, and one end of the sliding rod is fixedly connected to a piston, and a sealing ring is sleeved on the surface of the piston.

[0008] In a specific embodiment, one end of the sliding rod is fixedly connected to a pull plate, and the surface of the pull plate is provided with anti-slip patterns for increasing friction.

[0009] In a specific embodiment, the self-opening and closing component includes a fixed plate fixedly connected to the other end of the handle, and the side of the fixed plate is fixedly connected to a movable plate through a hinge, the side of the movable plate is fixed with a first magnetic sealing pad, and the side of the first magnetic sealing pad is magnetically connected to a second magnetic sealing pad, and the second magnetic sealing pad is fixedly connected to the inner wall of the handle.

[0010] In a specific embodiment, a special-shaped block is provided on the back side of the fixed plate in an axisymmetric manner, and the special-shaped block can limit the rotation angle of the movable plate.

[0011] In a specific embodiment, the surface of the grip tube is sleeved with an anti-slip sleeve, and the surface of the anti-slip sleeve is provided with grooves in an annular array for increasing friction.

[0012] In a specific embodiment, one end of the grip is connected to an air chamber, and a side of the air chamber is connected to an air extraction pipe.

[0013] Compared with the prior art, the present invention provides a gas sampling device for gas detection, which has the following beneficial effects:

[0014] In the technical solution disclosed by the present utility model, the exhaust tube at one end of the grip is placed inside the gas to be sampled, and the exhaust assembly is directly pulled manually to generate negative pressure inside the grip, sucking the gas into the interior of the grip. At the same time, the self-opening and closing assembly seals the grip for easy storage, thereby avoiding the use of an electric structure to operate the sampling device for sampling flammable and explosive gases, which may cause safety hazards.

[0015] Through the vacuum assembly provided by the utility model, the pull plate is pulled to drive the slide rod to slide inside the bracket, and then the piston at one end of the slide rod and the sealing ring fixed on its surface move inside the grip tube, so that negative pressure is generated inside the grip tube, and external gas enters the interior of the grip tube through the vacuum pipe, and the self-opening and closing assembly closes the grip tube to complete the sampling operation. When sampling flammable and explosive gases, the use of an electric structure to drive the sampling device to cause safety hazards can be avoided, thereby achieving the purpose of improving the scope of application of the sampling device and improving its practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the vacuum assembly of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the self-opening and closing component of the utility model;

[0020] Figure 4 This is a schematic diagram of the split structure of the utility model.

[0021] In the figure: 1. Grip; 2. Self-opening and closing assembly; 21. Fixed plate; 22. Hinge; 23. Movable plate; 24. First magnetic sealing gasket; 25. Second magnetic sealing gasket; 3. Bracket; 4. Exhaust assembly; 41. Slide rod; 42. Piston; 43. Sealing ring; 5. Pull plate; 6. Special-shaped block; 7. Anti-slip sleeve; 8. Air chamber; 9. Exhaust pipe. DETAILED DESCRIPTION

[0022] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] Figures 1-4 This is an embodiment of the present invention, a gas sampling device for gas detection, including a grip tube 1, a self-opening and closing component 2 is sleeved inside the grip tube 1, and one end of the grip tube 1 is fixedly connected to a bracket 3, and a gas extraction component 4 is slidably connected inside the bracket 3.

[0024] The specific problem addressed by this embodiment is to solve the problem that when using an electric structure to operate a sampling device to sample flammable and explosive gases, if the power inside the electric structure fails and generates sparks or short circuits, it can directly ignite the flammable and explosive gases, posing a great risk. This solution has a limited scope of application for sampling devices and poor practicality. The present utility model utilizes a suction tube 9 at one end of a grip tube 1 to place the gas to be sampled. The suction assembly 4 is directly manually pulled to generate a negative pressure inside the grip tube 1, drawing the gas into the grip tube 1. At the same time, the self-opening and closing assembly 2 seals the grip tube 1 for easy storage, thereby avoiding the safety hazards caused by using an electric structure to operate a sampling device to sample flammable and explosive gases.

[0025] The exhaust assembly 4 includes a slide rod 41 slidably connected to the interior of the bracket 3, and a piston 42 is fixedly connected to one end of the slide rod 41. A sealing ring 43 is sleeved on the surface of the piston 42. In this specific embodiment, a pull plate 5 is fixedly connected to one end of the slide rod 41, and the surface of the pull plate 5 is provided with anti-slip grooves for increasing friction. Pulling the pull plate 5 causes it to drive the slide rod 41 to slide inside the bracket 3. Then, the piston 42 at one end of the slide rod 41 and the sealing ring 43 fixed to its surface move inside the grip tube 1, causing negative pressure to be generated inside the grip tube 1. External gas enters the interior of the grip tube 1 through the exhaust pipe 9, and the self-opening and closing assembly 2 closes the grip tube 1, completing the sampling operation. When sampling flammable and explosive gases, the use of an electric structure to drive the sampling device can be avoided, thereby achieving the purpose of expanding the scope of application of the sampling device and improving its practicality.

[0026] In this specific embodiment, the self-opening and closing component 2 includes a fixed plate 21 fixedly connected to the other end of the handle 1, and the side of the fixed plate 21 is fixedly connected to the movable plate 23 through a hinge 22, and the side of the movable plate 23 is fixed with a first magnetic sealing pad 24, and the side of the first magnetic sealing pad 24 is magnetically connected to the second magnetic sealing pad 25, and the second magnetic sealing pad 25 is fixedly connected to the inner wall of the handle 1, and the back of the fixed plate 21 is axially symmetrically provided with a special-shaped block 6, and the special-shaped block 6 can rotate the movable plate 23. When the gas enters the grip tube 1, the movable plate 23 will be pushed open, and at the same time, the special-shaped block 6 will prevent the movable plate 23 from rotating too low, so that the first magnetic sealing pad 24 and the second magnetic sealing pad 25 can cover the magnetic distance of mutual attraction. Then, after the sampling gas is extracted from the grip tube 1, the first magnetic sealing pad 24 is magnetically connected to the second magnetic sealing pad 25 again, so that the movable plate 23 is reset, and one end of the grip tube 1 is sealed, which plays a role in fully automatic opening and closing of the interior of the grip tube 1 and more convenient operation.

[0027] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. In addition, the present invention is mainly used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the present invention.

[0028] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas sampling device for gas detection, comprising a grip tube (1), characterized in that: The interior of the grip tube (1) is sleeved with a self-opening and closing component (2), and one end of the interior of the grip tube (1) is fixedly connected to a bracket (3), and the interior of the bracket (3) is slidably connected to an air extraction component (4); The air extraction assembly (4) comprises a sliding rod (41) slidably connected to the interior of the bracket (3), and one end of the sliding rod (41) is fixedly connected to a piston (42), and a sealing ring (43) is sleeved on the surface of the piston (42).

2. A gas sampling device for gas detection according to claim 1, characterized in that: One end of the sliding rod (41) is fixedly connected to a pull plate (5), and the surface of the pull plate (5) is provided with anti-slip patterns for increasing friction.

3. A gas sampling device for gas detection according to claim 1, characterized in that: The self-opening and closing component (2) includes a fixed plate (21) fixedly connected to the other end of the handle tube (1), and the side of the fixed plate (21) is fixedly connected to a movable plate (23) through a hinge (22), the side of the movable plate (23) is fixed with a first magnetic sealing pad (24), and the side of the first magnetic sealing pad (24) is magnetically connected to a second magnetic sealing pad (25), and the second magnetic sealing pad (25) is fixedly connected to the inner side wall of the handle tube (1).

4. A gas sampling device for gas detection according to claim 3, characterized in that: A special-shaped block (6) is provided on the back side of the fixed plate (21) in an axisymmetric manner, and the special-shaped block (6) can limit the rotation angle of the movable plate (23).

5. A gas sampling device for gas detection according to claim 1, characterized in that: The surface of the grip tube (1) is sleeved with an anti-slip sleeve (7), and the surface of the anti-slip sleeve (7) is provided with grooves in an annular array for increasing friction.

6. A gas sampling device for gas detection according to claim 1, characterized in that: One end of the grip tube (1) is connected to an air chamber (8), and a side surface of the air chamber (8) is connected to an air extraction pipe (9).

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