Multi-channel mine field gas detector

Abstract

The utility model discloses a multi-channel mine field gas detector which comprises a bottom shell, a surface shell, a sealing pipe and a cover plate, wherein the surface shell and the bottom shell are enclosed to form an accommodating cavity for accommodating the circuit board, the circuit board is also electrically connected with at least two detection heads, and the detection heads are electrically connected with the circuit board; at least two through holes are formed in the surface of the surface shell; the number of the sealing pipes is matched with that of the detection heads; one end of the sealing tube is connected with the circuit board to accommodate the detection head in the tube cavity, and the other end of the sealing tube is attached to the face shell and communicated with the through hole; the cover plate detachably covers the through hole; a plurality of independent detection structures are formed through a plurality of sealing pipes, through holes and detection heads, and any detection structure works independently, so that one instrument can accurately detect different mine field gases; and the through hole is covered by the cover plate, so that the sample injection hole is covered and sealed, the sealing effect is realized, and the influence of impurity residues on the subsequent detection result is prevented.

Description

Technical Field

[0001] The utility model relates to the field of gas detection, in particular to a multi-channel mine gas detector. Background Art

[0002] Coal mines are areas where humans mine coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, the coal is usually mined by digging tunnels underground. This is an underground coal mine. When the coal seam is very close to the surface, the coal is usually mined directly by stripping the surface soil layer. This is an open-pit coal mine.

[0003] In modern coal mine production inspections, the use of gas detectors can quickly detect gas in the air, allowing timely evacuation to avoid safety accidents. However, during use, it was found that the test head in the gas detector was always exposed to the gas atmosphere, and the dusty environment easily caused the test head to be affected by impurities, reducing the detection accuracy. It was also found that the existing gas detectors have a single function and can only detect gas, but cannot detect gases such as carbon monoxide, carbon dioxide, methane, etc. in mine caves or mine shafts, and often require separate equipment for detection. Therefore, a detection device with a more reasonable structure is needed to solve the above-mentioned technical problems. Utility Model Content

[0004] Aiming at the technical problem in the prior art that detectors are unable to accurately detect a variety of mine environment gases, the present utility model provides a solution.

[0005] To achieve the above objectives, the present invention provides a multi-channel mine gas detector, comprising:

[0006] bottom shell;

[0007] A face shell, wherein the face shell and the bottom shell enclose a cavity for accommodating a circuit board, and the circuit board is also electrically connected to at least two detection heads; a surface of the face shell is provided with at least two through holes;

[0008] A sealing tube, wherein the number of the sealing tubes matches the number of the detection heads; one end of the sealing tube is connected to the circuit board to accommodate the detection heads in the tube cavity, and the other end is in contact with the surface shell and communicates with the through hole;

[0009] A cover plate is detachably arranged to cover the through hole.

[0010] As an improved solution of the present application, the through hole is a grid hole, and the cover plate is provided with a plug-in pin that is interference fit with the grid hole.

[0011] As an improved solution of the present application, magnetic attraction areas are further provided on both sides of the face shell, and the edge of the profile of the cover plate is inlaid with magnetic beads that are magnetically attracted to the magnetic attraction areas.

[0012] As an improved solution of the present application, a recessed groove is further provided on the surface of the face shell, and the through hole is correspondingly arranged at the bottom of the recessed groove.

[0013] As an improved solution of the present application, the inner wall surface of the sink is outwardly expanded and tilted to form a first inclined surface, and the edge of the cover plate is provided with a second inclined surface adapted to the first inclined surface.

[0014] As an improved solution of the present application, a sealing loop is further formed on the surface of the second inclined surface.

[0015] As an improved solution of the present application, the surface of the sealing velvet ring is coated with a hydrophobic layer.

[0016] As an improved solution of the present application, a sealing ring is further provided between the sealing tube and the inner surface of the face shell.

[0017] As an improved solution of the present application, the accommodating cavity is further provided with a battery and a display module connected to the circuit board, and the display module forms a display panel on the surface of the face shell.

[0018] As an improved solution of the present application, the circuit board is further equipped with a communication module, and the communication module is used to communicate with external equipment.

[0019] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention provides a multi-channel mine gas detector, comprising a bottom shell, a face shell, a sealing tube and a cover plate; wherein the face shell and the bottom shell enclose a housing cavity for accommodating a circuit board, and the circuit board is also electrically connected to at least two detection heads; at least two through holes are provided on the surface of the face shell; the number of the sealing tubes matches that of the detection heads; one end of the sealing tube is connected to the circuit board to accommodate the detection head in the tube cavity, and the other end is fitted with the face shell and connected to the through hole; the cover plate is removable to cover the through hole; multiple independent detection structures are formed by multiple sealing tubes, through holes and detection heads, and any detection structure works independently, so that one instrument can accurately detect different mine gases; and the through hole is covered by the cover plate, thereby covering and sealing the sampling hole, achieving a sealing effect, and preventing impurity residues from affecting the results of subsequent detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the utility model;

[0021] Figure 2 For this utility model Figure 1 A local enlarged view of area A;

[0022] Figure 3 It is an exploded view of the utility model;

[0023] Figure 4 It is a three-dimensional diagram of the cover plate of the present invention.

[0024] The main component symbols are described as follows:

[0025] 1. Surface shell; 11. Through hole; 12. Magnetic area; 13. First inclined surface;

[0026] 2. Bottom shell; 3. Circuit board; 4. Handheld part; 5. Detection head; 51. Sealing tube;

[0027] 6. Cover plate; 61. Sealing velvet ring; 62. Connector pins; 63. Magnetic beads; 7. Battery; 8. Display panel. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0029] In the following description, examples are provided to provide a deeper understanding of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. It should be understood that the specific embodiments described are only for the purpose of explaining the present invention and are not intended to limit the present invention.

[0030] It should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the stated features, integers, steps, operations, elements or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components or combinations thereof.

[0031] This application provides a multi-channel mine gas detector, please refer to the attached Figure 1 To the attached Figure 4 , including a bottom shell 2, a front shell 1, a sealing tube 51 and a cover plate 6; wherein the front shell 1 and the bottom shell 2 enclose a cavity for accommodating a circuit board 3, and the circuit board 3 is also electrically connected to at least two detection heads 5, and the detection heads 5 are electrically connected to the circuit board 3; at least two through holes 11 are provided on the surface of the front shell 1; the sealing tube 51 is adapted to the number of the detection heads 5; one end of the sealing tube 51 is connected to the circuit board 3 to accommodate the detection heads 5 in the tube cavity, and the other end is in contact with the front shell 1 and communicates with the through holes; the cover plate 6 is removable to cover the through holes 11;

[0032] During specific use, the technician holds the detection device through the handheld part 4 enclosed by the front shell and the bottom shell, opens the cover 6 responsible for testing the target gas, and then connects the through hole 11 to the external environment. The target gas then enters the working end of the detection head 5 from the through hole 11 and stays on the sealing tube. The sealing effect of the sealing tube 51 will not cause other gases to diffuse into other sealing tubes 51, thereby ensuring the independence of the detection structure, and thus being able to detect the concentration of the target gas; after the detection is completed, the cover 6 is closed on the through hole 11 to prevent impurities from being retained in the through hole 11 due to the mine environment; if the technician needs to detect another target gas later, he only needs to open the cover 6 of the corresponding detection head 5 and repeat the above operation; thereby solving the technical problem that the handheld detector cannot accurately detect multiple mine environment gases.

[0033] It can be seen that multiple independent detection structures are formed by multiple sealing tubes 3, through holes 51 and detection heads 5. Any detection structure works independently, so that one instrument can accurately detect different mine gases; and the through hole 11 is covered by the cover plate 6, thereby covering and sealing the sampling hole, achieving a sealing effect, and preventing impurity residues from affecting the results of subsequent detection.

[0034] In this embodiment, the through hole 11 is a grid hole, and the cover plate 6 is provided with a plug-in pin 62 that is interference fit with the grid hole; it is not difficult to understand that the grid hole and the plug-in pin 62 play a role of mutual interlocking assembly, so that the plug-in pin 62 fills the grid hole to form a blocked state, so as to further ensure the relative independence of the detection structure when working.

[0035] In this embodiment, magnetic areas 12 are provided on both sides of the face shell 1, and magnetic beads 63 that are magnetically attracted to the magnetic areas are inlaid on the edge of the profile of the cover plate 6. After the cover plate 6 is opened, the through hole 11 is exposed so that the target gas in the environment to be measured is connected to the corresponding detection head 5, and the detection head 5 can measure the target parameters of the target gas in the environment; during the measurement process, the magnetic adsorption force generated by the magnetic beads 63 and the magnetic area 12 is used to make the cover plate 6 detachable and fixed on the face shell 1, so as to avoid the cover plate 6 being easily lost in the mining environment due to its small size.

[0036] In this embodiment, a sink groove is further provided on the surface of the face shell 1, and the through hole 11 is correspondingly arranged at the bottom of the sink groove; it is not difficult to understand that the outer side of the cover plate 6 fits with the inner wall of the sink groove, thereby achieving better sealing, and effectively preventing the entry of mineral dust during the covering stage, thereby adversely affecting the subsequent sampling structure.

[0037] As an improved solution of the present application, the inner wall surface of the trough is expanded and tilted outward to form a first inclined surface 13, and the edge of the cover plate is provided with a second inclined surface adapted to the first inclined surface 13; it is not difficult to understand that the first inclined surface 13 and the second inclined surface achieve a guiding assembly effect, so that the cover plate 6 can quickly cover the injection hole 11.

[0038] In a mining environment, in order to prevent mine dust from invading from the gap between the first inclined surface 13 and the second inclined surface due to production errors, in this embodiment, a sealing velvet ring 61 is further formed on the surface of the second inclined surface. The sealing velvet ring 61 is made of polymer fiber, and its irregular hair surface can effectively prevent the invasion of mine dust of different particle sizes, and can better protect the sampling port from being affected by impurities; in a better solution, a hydrophobic layer is formed on the surface of the sealing velvet ring. Generally, man-made fibers have strong water absorption. Because the environmental humidity in the mine is relatively high, the velvet ring will absorb moisture in the air, so that the mine dust is better adsorbed in the man-made fibers. Therefore, in the preparation stage, the hydrophobic layer can be obtained by immersing the sealing velvet ring 61 in a hydrophobic material and then drying it. Subsequently, it is bonded to the second inclined surface by an adhesive. By virtue of the hydrophobic properties of the hydrophobic layer, the sealing velvet ring 61 is effectively prevented from absorbing moisture in the air, and the risk of mine dust invading is reduced.

[0039] As an improvement scheme of the present application, a sealing ring is further provided between the sealing tube 51 and the inner surface of the face shell 1; the detection head 5 is an instrument component with a sensor, and its appearance is differentiated. Therefore, in order to ensure that it can be better abutted and fixed with the sealing tube and enhance the air tightness and structural stability, a sealing ring is used for abutment.

[0040] In this embodiment, the accommodating cavity is also provided with a battery and a display module connected to the circuit board. The display module is formed with a display panel 8 on the surface of the face shell. The display panel 8 can display the working status of the instrument in real time for easy use.

[0041] In this embodiment, the surface of the handle portion 4 is provided with anti-slip grooves.

[0042] As an improvement to this application, the circuit board also incorporates a communication module for communicating with external devices. When a user walks to a testing location with the product in hand, various parameters are measured, and the test location, time, and indicators are automatically determined and recorded. These data are then automatically transmitted via the communication module (if a network connection is available), or transmitted after reaching a location with a network connection. Furthermore, an expansion connector is attached to the circuit board. This connector extends beyond the first half of the housing and utilizes an aviation 485 interface with precise dimensions, ensuring a stable structural connection.

[0043] The advantages of this utility model are:

[0044] Multiple independent detection structures are formed by multiple sealing tubes, through holes and detection heads. Any detection structure works independently, so that one instrument can accurately detect different mine gases; and the through holes are covered by a cover plate, thereby covering and sealing the sampling holes to achieve a sealing effect and prevent impurity residues from affecting the results of subsequent tests.

[0045] The above disclosures are only a few specific embodiments of the present invention, but the present invention is not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A multi-channel mine gas detector, characterized in that: include; bottom shell; A face shell, wherein the face shell and the bottom shell enclose a cavity for accommodating a circuit board, and the circuit board is also electrically connected to at least two detection heads; a surface of the face shell is provided with at least two through holes; A sealing tube, wherein the number of the sealing tubes matches the number of the detection heads; one end of the sealing tube is connected to the circuit board to accommodate the detection heads in the tube cavity, and the other end is in contact with the surface shell and communicates with the through hole; A cover plate is detachably arranged to cover the through hole.

2. The multi-channel mine gas detector according to claim 1, characterized in that: The through hole is a grid hole, and the cover plate is provided with a plug-in pin which is interference-fitted with the grid hole.

3. The multi-channel mine gas detector according to claim 2, characterized in that: Magnetic areas are also provided on both sides of the face shell, and the edges of the profile of the cover plate are inlaid with magnetic beads that are magnetically attracted to the magnetic areas.

4. The multi-channel mine gas detector according to claim 2, characterized in that: A recessed groove is further provided on the surface of the face shell, and the through hole is correspondingly arranged at the bottom of the recessed groove.

5. The multi-channel mine gas detector according to claim 4, characterized in that: The inner wall surface of the sink is expanded outward and tilted to form a first inclined surface, and the edge of the cover plate is provided with a second inclined surface adapted to the first inclined surface.

6. The multi-channel mine gas detector according to claim 5, characterized in that: A sealing loop is also formed on the surface of the second inclined surface.

7. The multi-channel mine gas detector according to claim 6, characterized in that: The surface of the sealing velvet ring is coated with a hydrophobic layer.

8. The multi-channel mine gas detector according to claim 1, characterized in that: A sealing ring is also provided between the sealing tube and the inner surface of the face shell.

9. The multi-channel mine gas detector according to claim 1, characterized in that: The accommodating cavity is further provided with a battery and a display module connected to the circuit board, and the display module forms a display panel on the surface of the face shell.

10. The multi-channel mine gas detector according to claim 1, characterized in that: The circuit board is also equipped with a communication module, which is used to communicate with external equipment.

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