Portable gas detector

Abstract

The utility model relates to the technical field of gas detectors, in particular to a portable gas detector which comprises a gas detector body, the top end of the gas detector body is communicated and connected with a gas inlet pipe, the front end of the gas inlet pipe is fixedly connected with a gas inlet cylinder, and the inner side of the gas inlet cylinder is rotatably connected with a gas inlet enhancing assembly. An operating rod mechanism is mounted at the rear end of the enhanced gas inlet assembly, and dovetail grooves are formed in the two sides of the top of the gas detector body; the air inlet enhancing assembly comprises a connecting shaft, the front end of the connecting shaft is fixedly connected with an installation shaft, the outer side of the installation shaft is fixedly connected with two small fan blades, the front end of the installation shaft is fixedly connected with a large fan blade, and the rear end of the connecting shaft is provided with a through movable groove. Dependence on an air pump is greatly reduced, overall power consumption is greatly reduced, electric quantity of a built-in power supply can be effectively saved in an outdoor scene, working time of an instrument is prolonged, and long-time stable detection is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of gas detector technology, specifically a portable gas detector. Background Technology

[0002] Gas detectors are instruments used to detect various gases in the environment. They can monitor harmful gases in the air in real time, such as carbon monoxide, hydrogen sulfide, and methane. They can be widely used in industrial production, mining, chemical industry, gas industry, environmental protection and other fields. By accurately detecting gas concentrations, they will issue an alarm in time once the safety threshold is exceeded, thereby effectively preventing safety accidents such as gas poisoning and explosions, and ensuring the safety of personnel and the production environment.

[0003] Currently, in order to achieve efficient and convenient air intake, many gas detectors generally adopt the air pump intake method. The air pump can actively and quickly draw external gas into the instrument, making the detection process more efficient and accurate, which has significant advantages over natural diffusion intake.

[0004] However, there is a significant drawback in the existing technology: the gas pump usually relies on the internal power supply of the gas detector for power. The gas pump consumes a large amount of electrical energy during operation, which undoubtedly increases the power consumption of the entire gas detection system. Especially in outdoor environments, such as environmental monitoring in remote areas, when an external power source is unavailable for charging, the gas detector's built-in power supply is limited and cannot sustain continuous operation for extended periods. This restricts the application range of the gas detector in outdoor scenarios and affects the smooth progress of the work. Therefore, a portable gas detector is proposed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a portable gas detector to solve the problem that the gas pump consumes a lot of electrical energy during operation, which undoubtedly increases the power consumption of the entire gas detection system. Especially in outdoor environments, environmental monitoring in remote areas is difficult to maintain for a long time, which limits the application range of the gas detector in outdoor scenarios and affects the smooth progress of the work.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A portable gas detector includes a gas detector body. An air inlet pipe is connected to the top of the gas detector body. An air inlet cylinder is fixedly connected to the front end of the air inlet pipe. An enhanced air inlet assembly is rotatably connected to the inner side of the air inlet cylinder. An operating lever mechanism is installed at the rear end of the enhanced air inlet assembly. Dovetail grooves are formed on both sides of the top of the gas detector body. The enhanced air inlet assembly includes a connecting shaft. A mounting shaft is fixedly connected to the front end of the connecting shaft. Two small fan blades are fixedly connected to the outer side of the mounting shaft. A large fan blade is fixedly connected to the front end of the mounting shaft. A through movable groove is formed at the rear end of the connecting shaft. An elastic limiting mechanism is installed above the movable groove. The operating lever mechanism includes a connecting rod. Connecting rods are fixedly connected to both ends of the connecting rod. An operating lever body is fixedly connected to one end of the connecting rod. A limiting block is fixedly connected to the top of the inner side of the operating lever body. The connecting rod is rotatably disposed inside the connecting shaft. The outer side of the limiting block engages with the inner side of the dovetail groove.

[0008] As a further optimization of this utility model, the two operating lever bodies are arranged symmetrically on the left and right with the connecting rod as the center, the top of the operating lever body has an arc-shaped structure, and the side of the operating lever body is fixedly connected with a protective strip.

[0009] As a further optimization of this utility model, the bottom of the two operating rod bodies is fixedly connected to the same reinforcing rod, which is located below the gas detector body, and the reinforcing rod and the connecting rod are parallel to each other.

[0010] As a further optimization of this utility model, the mounting shaft is located inside the air intake cylinder, there is a gap between the outer side of the mounting shaft and the inner wall of the air intake cylinder, there is a gap between the front end of the mounting shaft and the large fan blade, the large fan blade is located outside the air intake cylinder, the volume of the large fan blade is 1.1 times the volume of the small fan blade, and the two small fan blades are arranged in an axially offset manner with the mounting shaft.

[0011] As a further optimization of this utility model, the elastic limiting mechanism includes a limiting seat, which is fixedly installed on the top of the gas detector body near the operating lever mechanism. The interior of the limiting seat is connected to the inner side of the movable groove. A spring is fixedly connected to the top of the inner side of the limiting seat, and a limiting ball is fixedly connected to the bottom of the spring. The lower surface of the limiting ball is spherical, and the bottom of the limiting ball is located at the bottom of the inner side of the movable groove.

[0012] As a further optimization of this utility model, a rear support seat is provided on the side of the top of the air intake pipe near the operating lever mechanism, and the inner side of the rear support seat is rotatably connected to the outer side of the connecting shaft.

[0013] As a further optimization of this utility model, the rear end of the air intake cylinder is a conical structure, the inner side of the air intake cylinder is connected to the inner side of the air intake pipe, a front support seat is fixedly connected to one side of the inner wall of the air intake cylinder, and the center of the front end of the front support seat is rotatably connected to the outer side of the connecting shaft.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this utility model:

[0016] 1. Through the design of the enhanced air intake component, operating lever mechanism, and elastic limit and support structure, the device generates a powerful airflow suction force through the coordinated operation of large and small fan blades, which is then relayed to propel the air, significantly improving the air intake volume and speed, thereby improving gas detection efficiency and ensuring efficient detection work. At the same time, by using the combination of the enhanced air intake component and operating lever mechanism, the dependence on the air pump is greatly reduced, and the overall power consumption is significantly reduced. In outdoor scenarios, it can effectively save the power of the built-in power supply, extend the working time of the instrument, and ensure stable detection for a long time.

[0017] 2. During operation, the protective strip prevents hand injuries and increases operating friction, while the reinforcing rod ensures stable operation of the operating lever, ensuring convenient and safe operation. Structurally, the elastic limit mechanism ensures stable rotation of the connecting shaft, and the support base ensures smooth rotation of the connecting shaft, laying a solid foundation for efficient air intake and ensuring stable and reliable operation of the detector. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall rear structure of this utility model;

[0020] Figure 3 This is a schematic diagram illustrating the overall structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the enhanced air intake assembly of this utility model;

[0022] Figure 5 This is a schematic diagram of the operating lever mechanism of this utility model;

[0023] Figure 6 This is a schematic diagram of the elastic limiting mechanism of this utility model;

[0024] Figure 7 This is a schematic diagram of the air intake cylinder of this utility model.

[0025] In the diagram: 1. Gas detector body; 2. Inlet pipe; 3. Inlet cylinder;

[0026] 4. Enhanced intake assembly; 41. Connecting shaft; 42. Mounting shaft; 43. Small fan blade; 44. Large fan blade; 45. Movable groove; 46. Flexible limiting mechanism; 461. Limiting seat; 462. Spring; 463. Limiting ball;

[0027] 5. Rear support base;

[0028] 6. Operating lever mechanism; 61. Connecting rod; 62. Connecting rod; 63. Operating lever body; 64. Limiting block; 65. Protective strip; 66. Reinforcing rod;

[0029] 7. Front support seat; 8. Dovetail groove. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] Please see Figure 1-7 This utility model provides a technical solution:

[0033] A portable gas detector includes a gas detector body 1, an air inlet pipe 2 extending through the top of the gas detector body 1, an air inlet cylinder 3 fixedly connected to the front end of the air inlet pipe 2, an enhanced air inlet assembly 4 rotatably connected to the inner side of the air inlet cylinder 3, an operating lever mechanism 6 mounted at the rear end of the enhanced air inlet assembly 4, and dovetail grooves 8 formed on both sides of the top of the gas detector body 1; the enhanced air inlet assembly 4 includes a connecting shaft 41, a mounting shaft 42 fixedly connected to the front end of the connecting shaft 41, and two small fan blades 43 fixedly connected to the outer side of the mounting shaft 42. A large fan blade 44 is fixedly connected to the front end of the mounting shaft 42, and a through movable groove 45 is opened at the rear end of the connecting shaft 41. An elastic limiting mechanism 46 is installed above the movable groove 45. The operating lever mechanism 6 includes a connecting rod 61, and connecting rods 62 are fixedly connected to both ends of the connecting rod 61. An operating lever body 63 is fixedly connected to one end of the connecting rod 62. A limiting block 64 is fixedly connected to the top of the inner side of the operating lever body 63. The connecting rod 61 is rotatably set inside the connecting shaft 41, and the outer side of the limiting block 64 is engaged with the inner side of the dovetail groove 8.

[0034] As a further implementation of this solution, the elastic limiting mechanism 46 includes a limiting seat 461, which is fixedly installed on the top of the gas detector body 1 near the operating lever mechanism 6. The interior of the limiting seat 461 is connected to the inner side of the movable groove 45. A spring 462 is fixedly connected to the top of the inner side of the limiting seat 461, and a limiting ball 463 is fixedly connected to the bottom of the spring 462. The lower surface of the limiting ball 463 is spherical, and the bottom of the limiting ball 463 is located at the bottom of the inner side of the movable groove 45. During the rotation of the connecting shaft 41 by the connecting rod 61, the elastic force provided by the limiting ball 463 can prevent the connecting rod 61 from moving in the axial direction, ensuring the stable rotation of the connecting shaft 41, thereby ensuring the stability of the rotation of the small fan blade 43 and the large fan blade 44, and providing a reliable guarantee for efficient air intake.

[0035] As a further implementation of this solution, the two operating lever bodies 63 are symmetrically arranged on the left and right with the connecting rod 61 as the center. The top of the operating lever body 63 has an arc-shaped structure, and the side of the operating lever body 63 is fixedly connected with a protective strip 65. The protective strip 65 fixed on the side can prevent the operator's hand from being injured during operation, and at the same time increase the friction between the hand and the operating lever body 63, making the operation more stable.

[0036] As a further implementation of this solution, the bottom of the two operating lever bodies 63 is fixedly connected to the same reinforcing rod 66. The reinforcing rod 66 is located below the gas detector body 1. The reinforcing rod 66 and the connecting rod 61 are parallel to each other. When the operating lever mechanism 6 is pulled or rotated, it can effectively prevent the operating lever body 63 from deforming or being damaged, ensure the stable operation of the operating lever mechanism 6, and thus ensure the normal operation of the entire enhanced air intake assembly 4.

[0037] As a further implementation of this solution, the mounting shaft 42 is located inside the air intake cylinder 3. There is a gap between the outer side of the mounting shaft 42 and the inner wall of the air intake cylinder 3, and a gap between the front end of the mounting shaft 42 and the large fan blade 44. The large fan blade 44 is located outside the air intake cylinder 3, and its volume is 1.1 times that of the small fan blade 43. The two small fan blades 43 are arranged with the mounting shaft 42 in a axially offset manner. When the large fan blade 44 rotates, it generates a strong airflow suction force, which accelerates the airflow to flow towards the small fan blades 43, providing initial power for air intake. The small fan blades 43, which are arranged in a axially offset manner, effectively avoid airflow interference and form a relay propulsion effect, making the airflow enter the air intake cylinder 3 more smoothly and quickly, significantly improving the air intake volume and speed, and improving the gas detection efficiency.

[0038] As a further implementation of this scheme, a rear support seat 5 is connected through the top of the air inlet pipe 2 near the operating lever mechanism 6. The inner side of the rear support seat 5 is rotatably connected to the outer side of the connecting shaft 41. The rear end of the air inlet cylinder 3 has a conical structure, and the inner side of the air inlet cylinder 3 is connected to the inner side of the air inlet pipe 2. A front support seat 7 is fixedly connected to one side of the inner wall of the air inlet cylinder 3. The center of the front end of the front support seat 7 is rotatably connected to the outer side of the connecting shaft 41 to ensure the stability of the connecting shaft 41 during rotation and reduce shaking and offset. The conical structure at the rear end of the air inlet cylinder 3 helps to guide the airflow into the air inlet cylinder 3 more smoothly and connects to the inner side of the air inlet pipe 2, ensuring the smooth transmission of airflow from the air inlet cylinder 3 to the air inlet pipe 2, laying the foundation for the efficient air intake of the gas detector body 1.

[0039] Workflow: During use, the operator pulls the operating lever mechanism 6 backward. Under the pulling force, the limiting block 64 on the inner side of the operating lever body 63 disengages from the dovetail groove 8. When the operating lever body 63 moves, it drives the connecting rod 61 and the reinforcing rod 66 to move synchronously. The reinforcing rod 66 is used to ensure the firmness of the connection between the two operating lever bodies 63. During the movement of the connecting rod 61, it will squeeze the limiting ball 463 in the elastic limiting mechanism 46 to move upward, so that the connecting rod 61 moves to the rear of the movable groove 45. At this time, the connecting rod 61 can be rotated by the operating lever body 63. The connecting rod 61 then drives the connecting shaft 41 to rotate synchronously through the movable groove 45. It should be noted that the elastic limiting mechanism 46 in the movable groove 45 plays a role, and the limiting ball 463 is provided with elastic force by the spring 462. To prevent axial inward movement of the connecting rod 61 during rotation and ensure rotational stability, the connecting shaft 41 drives the two small fan blades 43 and the large fan blade 44 at the front end to rotate. When the large fan blade 44 rotates, it generates airflow suction, accelerating the airflow towards the small fan blades 43 and providing initial power for air intake. The coaxially staggered arrangement of the small fan blades 43 avoids airflow interference and forms a relay propulsion effect, allowing the airflow to enter the air intake cylinder 3 more smoothly and quickly, significantly increasing the intake volume and speed, thereby improving gas detection efficiency. After entering the air intake end of the gas detector body 1 through the air intake pipe 2, this mechanical linkage air intake method reduces the dependence on the air pump and greatly reduces the overall power consumption. In outdoor scenarios, it effectively saves the power of the built-in power supply, extends the working time of the instrument, and ensures the smooth progress of detection work.

[0040] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable gas detector, comprising a gas detector body (1), characterized in that: The top of the gas detector body (1) is connected to an air inlet pipe (2), the front end of the air inlet pipe (2) is fixedly connected to an air inlet cylinder (3), the inner side of the air inlet cylinder (3) is rotatably connected to an enhanced air inlet assembly (4), the rear end of the enhanced air inlet assembly (4) is equipped with an operating lever mechanism (6), and dovetail grooves (8) are opened on both sides of the top of the gas detector body (1). The enhanced air intake assembly (4) includes a connecting shaft (41), with a mounting shaft (42) fixedly connected to the front end of the connecting shaft (41), two small fan blades (43) fixedly connected to the outer side of the mounting shaft (42), a large fan blade (44) fixedly connected to the front end of the mounting shaft (42), and a through movable groove (45) opened at the rear end of the connecting shaft (41), with an elastic limiting mechanism (46) installed above the movable groove (45). The operating lever mechanism (6) includes a connecting rod (61), both ends of which are fixedly connected to a connecting rod (62), one end of which is fixedly connected to an operating lever body (63), and a limit block (64) is fixedly connected to the top of the inner side of the operating lever body (63). The connecting rod (61) is rotatably disposed inside the connecting shaft (41), and the outer side of the limiting block (64) is engaged with the inner side of the dovetail groove (8).

2. The portable gas detector according to claim 1, characterized in that: The two operating lever bodies (63) are arranged symmetrically on the left and right with the connecting rod (61) as the center. The top of the operating lever body (63) has an arc-shaped structure, and the side of the operating lever body (63) is fixedly connected with a protective strip (65).

3. A portable gas detector according to claim 1, characterized in that: The bottom of the two operating rod bodies (63) are fixedly connected to the same reinforcing rod (66), which is located below the gas detector body (1) and is parallel to the connecting rod (61).

4. A portable gas detector according to claim 1, characterized in that: The mounting shaft (42) is located inside the air intake cylinder (3). There is a gap between the outer side of the mounting shaft (42) and the inner wall of the air intake cylinder (3). There is a gap between the front end of the mounting shaft (42) and the large fan blade (44). The large fan blade (44) is located outside the air intake cylinder (3). The volume of the large fan blade (44) is 1.1 times the volume of the small fan blade (43). The two small fan blades (43) are arranged with their axes offset from the mounting shaft (42).

5. A portable gas detector according to claim 1, characterized in that: The elastic limiting mechanism (46) includes a limiting seat (461), which is fixedly installed on the top of the gas detector body (1) near the operating lever mechanism (6). The interior of the limiting seat (461) is connected to the inner side of the movable groove (45). A spring (462) is fixedly connected to the top of the inner side of the limiting seat (461). A limiting ball (463) is fixedly connected to the bottom of the spring (462). The lower surface of the limiting ball (463) is spherical, and the bottom of the limiting ball (463) is located at the bottom of the inner side of the movable groove (45).

6. A portable gas detector according to claim 1, characterized in that: The top of the air intake pipe (2) is connected to a rear support seat (5) on the side near the operating lever mechanism (6), and the inner side of the rear support seat (5) is rotatably connected to the outer side of the connecting shaft (41).

7. A portable gas detector according to claim 1, characterized in that: The rear end of the air intake cylinder (3) is a conical structure. The inner side of the air intake cylinder (3) is connected to the inner side of the air intake pipe (2). A front support seat (7) is fixedly connected to one side of the inner wall of the air intake cylinder (3). The center of the front end of the front support seat (7) is rotatably connected to the outer side of the connecting shaft (41).

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