A gas detection device

Abstract

This application discloses a gas detection device, including a detector body with an inlet detection pipe; a gas guide chamber connected to and communicating with the inlet detection pipe, a gas guide assembly inside the gas guide chamber, and a gas guide drive connected to the gas guide assembly that extends at least partially outside the gas guide chamber; and a telescopic tube of retractable length connected above the gas guide chamber, communicating with the interior of the gas guide chamber. The detector body of this application has a gas guide chamber on the inlet detection pipe, a gas guide assembly inside the gas guide chamber connected to the gas guide drive, and a telescopic tube of retractable length connected above the gas guide chamber. By adjusting the length of the telescopic tube, the end of the telescopic tube is extended near the detection point, driving the gas guide drive to guide the gas at the detection point into the telescopic tube and the gas guide chamber before entering the detector body for gas concentration detection. The overall operation is convenient, suitable for locations with high elevations or limited space, and can significantly improve work efficiency.

Description

Technical Field

[0001] This application relates to the field of gas detection technology, and more particularly to a gas detection device. Background Technology

[0002] Coal mine gas, also known as coalbed methane or coalbed methane, is a mixture of methane, carbon dioxide, and nitrogen that escapes from coal and surrounding rock. Coal mine gas inspectors must go down into the mine with other management personnel every day before the workers go down, to detect harmful gases at various work sites, report the detection results to the ventilation dispatcher in a timely manner, fill in the detection record, and then conduct on-the-job safety inspections.

[0003] The work intensity of coal mine gas detectors is high. They need to carry life-saving equipment, gas detection equipment and recording equipment. When conducting tests in coal mines, there are many detection points. For locations that are high or have limited space, the operation is very inconvenient, resulting in low detection efficiency and increasing the difficulty of the work of gas detectors. Summary of the Invention

[0004] The purpose of this application is to overcome the shortcomings of low detection efficiency in existing gas detection devices and to provide a portable gas detection device that is suitable for various detection environments to improve detection efficiency.

[0005] The technical solution of this application provides a gas detection device, including...

[0006] The main body of the detector is equipped with an air intake detection tube;

[0007] An air guide chamber is connected to and communicates with the air intake detection pipe. An air guide assembly is provided inside the air guide chamber, and the air guide assembly is connected to an air guide drive component that extends at least partially outside the air guide chamber.

[0008] The air-guiding chamber is connected to a telescopic tube of retractable length above it, and the telescopic tube communicates with the interior of the air-guiding chamber.

[0009] Furthermore, the air guide chamber is a cylinder with an internal cavity, and its axial ends are respectively provided with an air inlet and an air outlet. The air inlet is connected to the air inlet detection pipe, and the air outlet is connected to the air inlet detection pipe.

[0010] The diameters of the air inlet and the air outlet are smaller than the diameter of the cavity.

[0011] Furthermore, a support frame is provided inside the cavity;

[0012] The air guiding assembly includes a rotating shaft and several fan blades mounted at both ends of the rotating shaft, and the rotating shaft is rotatably mounted on the support frame.

[0013] Furthermore, the support frame includes a first support plate, a second support plate, and a connecting plate;

[0014] The first support plate and the second support plate are arranged in parallel. One end of the first support plate and the second support plate are connected to the inner wall of the cavity, and the other end is connected through the connecting plate.

[0015] Furthermore, the first support plate is provided with a first shaft hole, and the second support plate is provided with a second shaft hole, and the rotating shaft passes through the first shaft hole and the second shaft hole in sequence.

[0016] Furthermore, a first bearing and a second bearing are respectively installed in the first shaft hole and the second shaft hole. The first bearing is interference-fitted with the first shaft hole and the rotating shaft, and the second bearing is interference-fitted with the second shaft hole and the rotating shaft.

[0017] Furthermore, a rotating gear is fixedly connected to the rotating shaft, and the air guide drive component includes a drive rod, a drive gear, and a rotating handle;

[0018] One end of the drive rod is equipped with the drive gear, and the other end extends out of the air chamber and is connected to the rotating handle. The drive gear meshes with the rotating gear.

[0019] Furthermore, the rotary handle includes a turntable and a protrusion disposed on the edge of the turntable, and the center of the back side of the turntable having the protrusion is connected to the drive rod.

[0020] Furthermore, the telescopic fitting includes an inner tube, at least one intermediate sleeve, and an outer tube arranged sequentially.

[0021] The lower end of the inner tube is connected to the air guide chamber, and the upper edge is provided with a first flange that protrudes radially outward.

[0022] The intermediate sleeve is sequentially sleeved on the inner tube. The lower edge of the intermediate sleeve is provided with a second flange that protrudes radially inward, and the upper edge is provided with a third flange that protrudes radially outward.

[0023] The outer tube is located outside the outermost intermediate sleeve, and the lower edge of the outer tube has a fourth flange that protrudes radially inward.

[0024] Furthermore, the detector body includes a housing and a display screen, input components, and a gas detection circuit installed within the housing.

[0025] The above technical solution has the following beneficial effects:

[0026] The detector body of this application has an air guide chamber on the air inlet detection pipe, an air guide component in the air guide chamber and a connecting air guide drive, and a telescopic tube with an extendable length connected above the air guide chamber. By adjusting the length of the telescopic tube, the end of the telescopic tube is extended near the detection point, driving the air guide drive to guide the gas at the detection point into the telescopic tube and the air guide chamber before entering the detector body for gas concentration detection. The overall operation is convenient and can be used in relatively high or space-constrained locations, which can significantly improve work efficiency. Attached Figure Description

[0027] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. In the drawings:

[0028] Figure 1 This is a schematic diagram of the gas detection device in one embodiment of this application;

[0029] Figure 2 This is a cross-sectional view of the air chamber area in one embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the air guiding component in one embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the structure of a telescopic pipe fitting in one embodiment of this application.

[0032] Reference table for attached figures:

[0033] The main body of the detector 01 includes: air inlet detection pipe 11, vent 111, housing 12, display screen 13, and input components 14;

[0034] Air chamber 02: cavity 21, air inlet 22, air outlet 23, support frame 24, first support plate 241, second support plate 242, connecting plate 243;

[0035] Air guide assembly 03: rotating shaft 31, fan blades 32, rotating gear 33;

[0036] Air guide drive component 04: drive rod 41, drive gear 42, rotating handle 43, turntable 431, protrusion 432;

[0037] Telescopic fitting 05: Inner tube 51, first flange 511, intermediate sleeve 52, second flange 521, third flange 522, outer tube 53, fourth flange 531. Detailed Implementation

[0038] The specific embodiments of this application will be further described below with reference to the accompanying drawings.

[0039] It is readily understood that, based on the technical solution of this application, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of this application. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this application and should not be considered as the entirety of this application or as limitations or restrictions on the technical solution of the application.

[0040] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meanings of the above in this application according to the specific circumstances.

[0042] A gas detection device, such as Figure 1-4 As shown, including

[0043] The main body 01 of the detector is equipped with an air intake detection pipe 11;

[0044] An air guide chamber 02 is connected to and communicates with the air intake detection pipe 11. An air guide assembly 03 is provided inside the air guide chamber 02. The air guide assembly 03 is connected to an air guide drive component 04 that extends at least partially out of the air guide chamber 02.

[0045] A telescopic tube 05 with a retractable length is connected to the top of the air chamber 02, and the telescopic tube 05 is connected to the inside of the air chamber 02.

[0046] Specifically, the detector body 01 is used to detect the concentration of a target gas, taking methane as an example. The detector body 01 is equipped with a detection circuit including a methane concentration sensor. Gas enters the detector body 01 through the inlet detection pipe 11, and the detection circuit detects the methane concentration and outputs the concentration data. A gas guide chamber 02 is connected to the inlet detection pipe 11, and a telescopic fitting 04 is connected above the gas guide chamber 02. The inlet detection pipe 11, the gas guide chamber 02, and the telescopic fitting 04 can all be detachably connected, or they can be integrated with the inlet detection pipe 11. The telescopic fitting 04, the gas guide chamber 02, and the inlet detection pipe 11 are connected to form an air intake channel. To allow gas to flow, a vent hole 111 is provided on the side wall of the inlet detection pipe 11.

[0047] When conducting gas detection at points inaccessible to staff, the telescopic fitting 05 is first extended, with its end inserted near the detection point. Then, the gas guiding actuator 04 is activated, which in turn drives the gas guiding assembly 03 to draw gas from the detection point through the telescopic fitting 05 and the gas guiding chamber 02 into the inlet detection pipe 11. The gas concentration is then detected by the main body of the detector 01. After detection, the telescopic fitting 05 is retracted. The entire detection process is convenient and suitable for locations with high elevations or limited space, significantly improving work efficiency.

[0048] In one embodiment, such as Figure 2 As shown, the air chamber 02 is a cylinder with an internal cavity 21. It has an air inlet 22 and an air outlet 23 at its two axial ends. The air inlet 22 is connected to the air inlet detection pipe 11, and the air outlet 23 is connected to the air inlet detection pipe 11.

[0049] The diameters of the air inlet 22 and the air outlet 23 are smaller than the diameter of the cavity 21.

[0050] Specifically, the air-guiding chamber 02 has an internal cavity 21. Parts of the air-guiding assembly 03 and the air-guiding drive component 04 are installed within the cavity 21. The axes of the air inlet 22 and the air outlet 23 coincide with the axis of the cavity 21 to reduce airflow resistance. Furthermore, to increase the space of the cavity 21 and reduce the impact of the air-guiding assembly 03 and the air-guiding drive component 04 on airflow, the diameters of the air inlet 22 and the air outlet 23 are smaller than the diameter of the cavity 21. Specifically, the diameter of the air inlet 22 matches the diameter of the telescopic tube 05, and the diameter of the air outlet 23 matches the diameter of the air inlet detection tube 11.

[0051] In one embodiment, such as Figure 2 As shown, a support frame 24 is provided inside the cavity 21;

[0052] The air guide assembly 03 includes a rotating shaft 31 and a plurality of fan blades 32 mounted at both ends of the rotating shaft 31. The rotating shaft 31 is rotatably mounted on the support frame 24.

[0053] Specifically, the support frame 24 is connected to the inner wall of the cavity 21, which serves to fix the air guide assembly 03. It should be noted that the support frame 24 cannot completely block the air inlet 22 and the air outlet 23 to avoid obstructing the airflow.

[0054] The air guide drive 04 drives the rotation shaft 31 of the air guide assembly 03 to rotate relative to the support frame 24, thereby driving the fan blade 32 to rotate and guiding the airflow from the telescopic pipe 05 to the air intake detection pipe 11. The airflow direction is determined by the installation direction of the fan blade 32, and the existing fan blade structure can be used, which will not be described in detail here.

[0055] In one embodiment, such as Figure 2 As shown, the support frame 24 includes a first support plate 241, a second support plate 242, and a connecting plate 243;

[0056] The first support plate 241 and the second support plate 242 are arranged in parallel. One end of the first support plate 241 and the second support plate 242 are connected to the inner wall of the cavity 21, and the other end is connected through the connecting plate 243.

[0057] Specifically, both the first support plate 241 and the second support plate 242 are strip-shaped and overlap axially in the cavity 21 to reduce airflow resistance. One end of the first support plate 241 and the second support plate 242 is connected to the inner wall of the cavity 21, and the other end extends radially along the cavity 21, crossing its axis and connecting to the connecting plate 243. The connecting plate 243 connects the first support plate 241 and the second support plate 242 into a single unit.

[0058] In one embodiment, such as Figure 2 As shown, the first support plate 241 is provided with a first shaft hole, and the second support plate 242 is provided with a second shaft hole. The rotating shaft 31 passes through the first shaft hole and the second shaft hole in sequence.

[0059] Specifically, both the first shaft hole and the second shaft hole are set on the axis of the cavity 21 so that the rotating shaft 31 can be located on the axis of the cavity 21, making the airflow more uniform.

[0060] In one embodiment, such as Figure 2 As shown, a first bearing and a second bearing are respectively installed in the first shaft hole and the second shaft hole. The first bearing is interference-fitted with the first shaft hole and the rotating shaft 31, and the second bearing is interference-fitted with the second shaft hole and the rotating shaft 31.

[0061] Specifically, the first and second bearings are ball bearings, each comprising an outer ring, an inner ring, and a plurality of balls located between the outer and inner rings. The balls reduce rotational friction between the outer and inner rings. During installation, the outer ring of the first bearing is interference-fitted with the first shaft bore, and the inner ring is interference-fitted with the rotating shaft 31; similarly, the outer ring of the second bearing is interference-fitted with the first shaft bore, and the inner ring is interference-fitted with the rotating shaft 31.

[0062] In one embodiment, such as Figure 2 , 3 As shown, a rotating gear 33 is fixedly connected to the rotating shaft 31, and the air guide drive component 04 includes a drive rod 41, a drive gear 42 and a rotating handle 43.

[0063] One end of the drive rod 41 is equipped with a drive gear 42, and the other end extends out of the air chamber 02 and is connected to a rotating handle 43. The drive gear 42 meshes with the rotating gear 33.

[0064] Specifically, the rotating gear 33 is a bevel gear, which is fixedly connected to the rotating shaft 31, and the two rotate synchronously. The drive gear 42 is also a bevel gear. The axial direction of the rotating gear 33 and the axial direction of the drive gear 42 are perpendicular to each other. The drive gear 42 meshes with the rotating gear 33. When in use, the user drives the rotating handle 43 to rotate, which drives the drive rod 41 and the drive gear 42. The drive gear 42 drives the rotating gear 33 to rotate, and the entire air guide assembly 03 rotates to form an airflow.

[0065] In one embodiment, such as Figure 2 As shown, the rotary handle 43 includes a turntable 431 and a protrusion 432 disposed on the edge of the turntable 431. The center of the back side of the turntable 431 with the protrusion 432 is connected to the drive rod 41.

[0066] Specifically, the rotary handle 43 is a disc, with the center of one side connected to the drive rod 41, and a protrusion 432 on the edge of the other side. When rotating, pushing the protrusion 432 to make a circular motion can drive the drive rod 41 to rotate, making it easier for the user to drive.

[0067] In one embodiment, such as Figure 4 As shown, the telescopic fitting 05 includes an inner tube 51, at least one intermediate sleeve 52, and an outer tube 53, which are sequentially arranged.

[0068] The lower end of the inner tube 51 is connected to the air guide chamber 02, and the upper edge is provided with a first flange 511 that protrudes radially outward;

[0069] The intermediate sleeve 52 is sequentially sleeved on the inner tube 51. The lower edge of the intermediate sleeve 52 is provided with a second flange 521 that protrudes radially inward, and the upper edge is provided with a third flange 522 that protrudes radially outward.

[0070] The outer tube 53 is located outside the outermost intermediate sleeve 52, and the lower edge of the outer tube 53 is provided with a fourth flange 531 that protrudes radially inward.

[0071] Specifically, the telescopic fitting 05 is composed of multiple fittings connected in sequence. The inner tube 51 is located at the innermost layer, with multiple intermediate sleeves 52 sequentially fitted inside, and the outermost layer is fitted with an outer tube 53. The upper edge of the inner tube 51 has a first flange 511 protruding outwards, and the lower edge of the intermediate sleeves 52 has a second flange 521 protruding inwards. The first flange 511 abuts against the second flange 521 of the innermost intermediate sleeve 52, thereby limiting the innermost intermediate sleeve 52. Similarly, the lower edge of the outer tube 53 has a fourth flange 531 protruding radially inwards, and the upper edge of the intermediate sleeves 52 has a third flange 522, which abuts against the second flange 521 of the outer intermediate sleeve 52 or the fourth flange 531 of the outer tube 53, thereby limiting the outer intermediate sleeve 52 or the outer tube 53.

[0072] The number of intermediate sleeves 52 is set according to actual needs. When in use, the telescopic fitting 05 can be extended and shortened simply by extending and retracting each sleeve layer by layer.

[0073] In one embodiment, such as Figure 1 As shown, the detector body 01 includes a housing 12 and a display screen 13, an input device 14 and a gas detection circuit installed inside the housing 12.

[0074] Specifically, the input device 14 may include buttons and knobs, and the gas detection circuit includes components such as a circuit board, power supply, and detection sensor, and is electrically connected to the display screen 12 and the input device 14. The specific circuit can be found in the gas concentration detection circuit in the prior art, which is not the inventive point of this application and will not be described in detail here.

[0075] In this embodiment, after the airflow enters the detector body 01 through the air inlet detection pipe 11, the gas detection circuit detects the gas concentration and displays the detection result on the display screen 12. The user can clear the data and start the detection through the input device 14.

[0076] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0077] The above description is merely the principle and preferred embodiment of this application. It should be noted that for those skilled in the art, implementation methods obtained by appropriately combining the technical solutions disclosed in different embodiments are also included within the technical scope of this invention. Based on the principle of this application, several other modifications can also be made, which should also be considered within the protection scope of this application.

Claims

1. A gas detection device, characterized by, include The main body of the detector is equipped with an air intake detection tube; An air guide chamber is connected to and communicates with the air intake detection pipe. An air guide assembly is provided inside the air guide chamber, and the air guide assembly is connected to an air guide drive component that extends at least partially outside the air guide chamber. The air-guiding chamber is connected to a telescopic tube of retractable length above it, and the telescopic tube communicates with the interior of the air-guiding chamber.

2. The gas detection device of claim 1, wherein, The air chamber is a cylinder with an internal cavity, and has an air inlet and an air outlet at its two axial ends, respectively. The air inlet is connected to the air inlet detection pipe, and the air outlet is connected to the air inlet detection pipe. The diameters of the air inlet and the air outlet are smaller than the diameter of the cavity.

3. The gas detection device of claim 2, wherein, A support frame is provided inside the cavity; The air guiding assembly includes a rotating shaft and several fan blades mounted at both ends of the rotating shaft, and the rotating shaft is rotatably mounted on the support frame.

4. The gas detection device of claim 3, wherein, The support frame includes a first support plate, a second support plate, and a connecting plate; The first support plate and the second support plate are arranged in parallel. One end of the first support plate and the second support plate are connected to the inner wall of the cavity, and the other end is connected through the connecting plate.

5. The gas detection device of claim 4, wherein, The first support plate is provided with a first shaft hole, and the second support plate is provided with a second shaft hole. The rotating shaft passes through the first shaft hole and the second shaft hole in sequence.

6. The gas detection device of claim 5, wherein, A first bearing and a second bearing are respectively installed in the first shaft hole and the second shaft hole. The first bearing is interference-fitted with the first shaft hole and the rotating shaft, and the second bearing is interference-fitted with the second shaft hole and the rotating shaft.

7. The gas detection device of claim 5, wherein, A rotating gear is fixedly connected to the rotating shaft, and the air guide drive includes a drive rod, a drive gear, and a rotating handle; One end of the drive rod is equipped with the drive gear, and the other end extends out of the air chamber and is connected to the rotating handle. The drive gear meshes with the rotating gear.

8. The gas detection device of claim 7, wherein, The rotary handle includes a turntable and a protrusion disposed on the edge of the turntable. The center of the back side of the turntable with the protrusion is connected to the drive rod.

9. The gas detection device according to any one of claims 1 to 8, wherein The telescopic fitting includes an inner tube, at least one intermediate sleeve, and an outer tube that are sequentially sleeved together. The lower end of the inner tube is connected to the air guide chamber, and the upper edge is provided with a first flange that protrudes radially outward. The intermediate sleeve is sequentially sleeved on the inner tube. The lower edge of the intermediate sleeve is provided with a second flange that protrudes radially inward, and the upper edge is provided with a third flange that protrudes radially outward. The outer tube is located outside the outermost intermediate sleeve, and the lower edge of the outer tube has a fourth flange that protrudes radially inward.

10. The gas detection device according to any one of claims 1 to 8, wherein The detector body includes a housing and a display screen, input components, and a gas detection circuit installed inside the housing.

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