Mining gas detector

Abstract

The utility model discloses a mining gas detector which comprises a shell and a gas storage mechanism, the lower side of the front surface of the shell is fixedly connected with a display; the air storage mechanism comprises an air inlet pipe, an electromagnetic valve, an air storage pipe, a one-way valve and an air outlet pipe, the air inlet pipe is fixedly connected to the rear surface in the shell, the air storage pipe is fixedly connected to the lower end of the air inlet pipe, the electromagnetic valve is connected between the air storage pipe and the air inlet pipe in series, the air outlet pipe is fixedly connected to the right end of the air storage pipe, and the one-way valve is connected between the air outlet pipe and the air storage pipe in series; according to the mining gas detector, detected gas is discharged through the gas storage mechanism, the one-way valve and the movable piston, so that the situation that the detected gas remains in the gas detector is prevented, and the detection accuracy is improved. Therefore, the accuracy of gas detection is improved.

Description

Technical Field

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

[0002] During coal mining operations, the underground environment is complex and changeable, containing various toxic and harmful gases such as methane (CH4), carbon monoxide (CO), and hydrogen sulfide (H2S). These gases pose a serious threat to human health and safety, necessitating the use of gas detection equipment to monitor the air inside the mine to ensure that workers operate in a safe environment.

[0003] In the prior art, patent CN212207266U discloses a mining intelligent multi-parameter gas detector, including a first belt and a dust filter. A T-shaped piece is provided on the left side of the first belt, and a housing is provided on the right side of the first belt. A partition is provided inside the housing, and a threaded hole is provided inside the partition. A gas sensor is provided above the threaded hole, and an air pump is provided above the gas sensor. Buzzers are provided on both sides of the air pump, and a probe is provided above the air pump. A support base is provided above the probe, and an electric heating wire is provided above the support base. Annular grooves are provided on both sides of the dust filter, and the dust filter is located above the electric heating wire. A second belt is provided on the right side of the housing, and a mating hole is provided inside the second belt. A control board groove is provided below the partition, and a battery box is provided at the rear end of the control board groove. A display screen is provided at the front end of the housing, and a speaker mesh is provided above the display screen.

[0004] The following are the disadvantages of this type of intelligent multi-parameter gas detector for mining: after detecting the gas in the mine, the detected gas will remain inside the gas detector, which may affect the next gas detection and lead to inaccurate results. To address this, we propose a new type of gas detector for mining. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a mining gas detector. Through a gas storage mechanism, a one-way valve and a moving piston are used to discharge the detected gas, thereby preventing the gas detector from having residual gas from previous detections inside, thus improving the accuracy of gas detection and effectively solving the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a mining gas detector, including a housing, a display fixedly connected to the lower side of the front surface of the housing, and a gas storage mechanism;

[0007] Gas storage mechanism: It includes an inlet pipe, a solenoid valve, a gas storage pipe, a one-way valve, and an outlet pipe. The inlet pipe is fixedly connected to the inner rear surface of the outer casing. The lower end of the inlet pipe is fixedly connected to the gas storage pipe. A solenoid valve is connected in series between the gas storage pipe and the inlet pipe. The right end of the gas storage pipe is fixedly connected to the outlet pipe. A one-way valve is connected in series between the outlet pipe and the gas storage pipe. A one-way valve is also fixedly connected to the right end of the outlet pipe. Gas sensors are fixedly connected to the inner surface of the gas storage pipe. Through the gas storage mechanism, the one-way valve and the moving piston discharge the detected gas, thereby preventing the gas detector from having residual previously detected gas inside, thus improving the accuracy of gas detection.

[0008] Furthermore, a microcontroller is fixedly connected to the lower side of the inner rear surface of the housing, the input terminal of the display is electrically connected to the output terminal of the microcontroller, and the gas sensor is bidirectionally electrically connected to the microcontroller to control the operation of the electrical appliances.

[0009] Furthermore, a battery is fixedly connected to the lower side of the inner rear surface of the housing, and a charging port is fixedly connected to the lower surface of the housing. The output end of the charging port is electrically connected to the input end of the battery, and the output end of the battery is electrically connected to the input end of the microcontroller to store electrical energy.

[0010] Furthermore, a piston is slidably connected to the upper side of the inside of the gas outlet pipe, and a connecting rod is rotatably connected to the upper end of the piston. An end face gear is rotatably connected to the upper side of the inner rear surface of the outer shell, and a fixing pin is fixedly connected to the eccentric part of the front surface of the end face gear. The upper end of the connecting rod is rotatably connected to the outer surface of the fixing pin. A drive shaft is rotatably connected to the upper side of the inside of the outer shell, and a gear is fixedly connected to the outer surface of the drive shaft. The gear meshes with the end face gear to transmit driving force and extract gas from the inside of the gas storage pipe.

[0011] Furthermore, a motor is fixedly connected to the upper side of the inner rear surface of the housing. The right end of the motor's output shaft is fixedly connected to the left end of the transmission shaft, and the input end of the motor is electrically connected to the output end of the microcontroller to provide driving force.

[0012] Furthermore, an air inlet is provided on the left side of the upper surface of the outer shell, and a filter screen is fixedly connected inside the air inlet. The air inlet is connected to the upper end of the air inlet pipe. An air outlet is provided in the middle of the right surface of the outer shell, and the air outlet is connected to the right end of the one-way valve on the right side for gas to enter and exit.

[0013] Furthermore, evenly distributed indicator lights are fixedly connected to the upper side of the front surface of the housing. The input terminal of the indicator light is electrically connected to the output terminal of the microcontroller, and a warning is issued when harmful gas is detected.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This mine gas detector has the following advantages:

[0015] The gas storage mechanism uses a one-way valve and a moving piston to discharge the detected gas, thereby preventing the gas detector from having any residual gas inside. This ensures that gas is drawn in from the outside for each gas detection, thus improving the accuracy of gas detection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0018] In the diagram: 1. Housing, 2. Indicator light, 3. Display, 4. Air outlet, 5. Air inlet, 6. Filter, 7. Gas storage mechanism, 71. Inlet pipe, 72. Solenoid valve, 73. Gas storage pipe, 74. One-way valve, 75. Air outlet, 8. Piston, 9. Connecting rod, 10. Fixing pin, 11. End face gear plate, 12. Gear, 13. Motor, 14. Microcontroller, 15. Battery, 16. Charging port, 17. Gas sensor. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-2 This embodiment provides a technical solution: a mine gas detector, including a housing 1, a display 3 fixedly connected to the lower side of the front surface of the housing 1, a microcontroller 14 fixedly connected to the lower side of the inner rear surface of the housing 1, the input terminal of the display 3 electrically connected to the output terminal of the microcontroller 14, a uniformly distributed indicator light 2 fixedly connected to the upper side of the front surface of the housing 1, the input terminal of the indicator light 2 electrically connected to the output terminal of the microcontroller 14, when the gas sensor 17 detects a harmful gas and the concentration of the harmful gas exceeds the standard, the microcontroller 14 controls the indicator light 2 to flash, a storage battery 15 fixedly connected to the lower side of the inner rear surface of the housing 1, a charging port 16 fixedly connected to the lower surface of the housing 1, the output terminal of the charging port 16 electrically connected to the input terminal of the storage battery 15, the output terminal of the storage battery 15 electrically connected to the input terminal of the microcontroller 14, and also includes a gas storage mechanism 7;

[0021] Gas storage mechanism 7: It includes an inlet pipe 71, a solenoid valve 72, a gas storage pipe 73, a one-way valve 74, and an outlet pipe 75. The inlet pipe 71 is fixedly connected to the inner rear surface of the outer casing 1. The lower end of the inlet pipe 71 is fixedly connected to the gas storage pipe 73. A solenoid valve 72 is connected in series between the gas storage pipe 73 and the inlet pipe 71. The right end of the gas storage pipe 73 is fixedly connected to the outlet pipe 75. A one-way valve 74 is connected in series between the outlet pipe 75 and the gas storage pipe 73. A one-way valve 74 is also fixedly connected to the right end of the outlet pipe 75. An air inlet 5 is opened on the left side of the upper surface of the outer casing 1. A filter screen 6 is fixedly connected inside the air inlet 5. The air inlet 5 is connected to the upper end of the inlet pipe 71. The right surface of the outer casing 1... An air outlet 4 is provided in the middle of the surface, which is connected to the right end of the one-way valve 74 on the right side. Gas sensors 17 are fixedly connected to the inner surface of the gas storage pipe 73. The gas sensors 17 are bidirectionally electrically connected to the microcontroller 14. External gas enters the outlet pipe 73 through the inlet 5 and the inlet pipe 71. At this time, the gas sensor 17 detects the gas and transmits the measured data to the microcontroller 14. The microcontroller 14 transmits the data to the display 3. When the gas sensor 17 detects harmful gas and the concentration of harmful gas exceeds the standard, the microcontroller 14 controls the indicator light 2 to flash. A piston 8 is slidably connected to the upper side of the inside of the outlet pipe 75. The upper end of the piston 8 rotates. A connecting rod 9 is rotatably connected to the upper side of the inner rear surface of the housing 1. A gear 11 is rotatably connected to the upper side of the inner rear surface of the housing 1. A fixing pin 10 is fixedly connected to the eccentric part of the front surface of the gear 11. The upper end of the connecting rod 9 is rotatably connected to the outer surface of the fixing pin 10. A drive shaft is rotatably connected to the upper side of the inner interior of the housing 1. A gear 12 is fixedly connected to the outer surface of the drive shaft and meshes with the gear 11. A motor 13 is fixedly connected to the upper side of the inner rear surface of the housing 1. The right end of the output shaft of the motor 13 is fixedly connected to the left end of the drive shaft. The input end of the motor 13 is electrically connected to the output end of the microcontroller 14. By operating the microcontroller 14, the solenoid valve 72 is closed, and the motor 13 is started. The output shaft of 13 rotates, driving the transmission shaft to rotate, causing gear 12 to rotate, which in turn drives the end face gear disk 11 to rotate, causing the fixing pin 10 to rotate around the central axis of the end face gear disk 11. This causes the upper end of the connecting rod 9 to rotate around the central axis of the end face gear disk 11, causing the lower end of the connecting rod 9 to drive the piston 8 to slide inside the upper side of the exhaust pipe 75. When the piston 8 slides downward, the one-way valve 74 on the left closes and the one-way valve 74 on the right opens, allowing gas to be discharged through the one-way valve 74 on the right. When the piston 8 moves upward, the one-way valve 74 on the left opens and the one-way valve 74 on the right closes, drawing out the gas inside the gas storage pipe 73. This process is repeated to discharge the gas inside the exhaust pipe 73.

[0022] The working principle of the mine gas detector provided by this utility model is as follows: When using the mine gas detector for gas detection, place the detector in a suitable position, operate the microcontroller 14, close the solenoid valve 72, and start the motor 13. The output shaft of the motor 13 rotates, driving the transmission shaft to rotate, causing the gear 12 to rotate, which in turn drives the end face gear disk 11 to rotate. This causes the fixing pin 10 to rotate around the central axis of the end face gear disk 11, which in turn drives the upper end of the connecting rod 9 to rotate around the central axis of the end face gear disk 11. This causes the lower end of the connecting rod 9 to drive the piston 8 to slide inside the upper side of the outlet pipe 75. When the piston 8 slides downward, the one-way valve 74 on the left side closes, and the one-way valve 74 on the right side closes. When valve 74 is opened, gas is discharged through the one-way valve 74 on the right. When piston 8 moves upward, the one-way valve 74 on the left opens and the one-way valve 74 on the right closes, drawing out the gas inside the gas storage pipe 73. This process is repeated to discharge the gas inside the gas outlet pipe 73. Then, motor 13 is turned off and solenoid valve 72 is opened. External gas enters the gas outlet pipe 73 through the inlet 5 and the inlet pipe 71. At this time, gas sensor 17 detects the gas and transmits the measured data to microcontroller 14. Microcontroller 14 transmits the data to display 3. When gas sensor 17 detects harmful gas and the concentration of harmful gas exceeds the standard, microcontroller 14 controls indicator light 2 to flash.

[0023] It is worth noting that, in the above embodiments, the indicator light 2 is YY-12VG4LED, the display 3 is M1-7TR4A, the solenoid valve 72 is JOI I SA-3, the motor 13 is 37-3530, the microcontroller 14 is Siemens S7-200, the battery 15 is an 18650 lithium battery, and the gas sensor 17 is a GJG100J mining laser methane sensor. The microcontroller 14 controls the operation of the indicator light 2, the display 3, the solenoid valve 72, the motor 13, and the gas sensor 17 using methods commonly used in the prior art.

[0024] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A mine gas detector comprising a shell (1), the lower side of the front surface of the shell (1) is fixedly connected with a display (3), characterized in that: Also include gas storage mechanism (7); The gas storage mechanism (7) includes an air inlet pipe (71), an electromagnetic valve (72), a gas storage pipe (73), a check valve (74) and an air outlet pipe (75), the air inlet pipe (71) is fixedly connected to the inner rear surface of the shell (1), the lower end of the air inlet pipe (71) is fixedly connected with the gas storage pipe (73), the electromagnetic valve (72) is connected in series between the gas storage pipe (73) and the air inlet pipe (71), the right end of the gas storage pipe (73) is fixedly connected with the air outlet pipe (75), the check valve (74) is connected in series between the air outlet pipe (75) and the gas storage pipe (73), the right end of the air outlet pipe (75) is also fixedly connected with the check valve (74), and the inner surface of the gas storage pipe (73) is fixedly connected with the gas sensor (17).

2. The mine gas detector according to claim 1, characterized in that: The lower side of the inner rear surface of the shell (1) is fixedly connected with a single-chip microcomputer (14), the input end of the display (3) is electrically connected with the output end of the single-chip microcomputer (14), and the gas sensor (17) is bidirectionally electrically connected with the single-chip microcomputer (14).

3. The mine gas detector of claim 2, wherein: The lower side of the inner rear surface of the shell (1) is fixedly connected with a storage battery (15), the lower surface of the shell (1) is fixedly connected with a charging socket (16), the output end of the charging socket (16) is electrically connected with the input end of the storage battery (15), and the output end of the storage battery (15) is electrically connected with the input end of the single-chip microcomputer (14).

4. The mine gas detector of claim 2, wherein: The upper side of the inner rear surface of the shell (1) is fixedly connected with a motor (13), the output shaft right end of the motor (13) is fixedly connected with the left end of the transmission shaft, and the input end of the motor (13) is electrically connected with the output end of the single-chip microcomputer (14).

5. The mine gas detector of claim 4, wherein: The upper surface left side of the shell (1) is provided with an air inlet (5), the inner surface of the air inlet (5) is fixedly connected with a filter screen (6), the air inlet (5) is communicated with the upper end of the air inlet pipe (71), and the right surface middle part of the shell (1) is provided with an air outlet (4), which is communicated with the right end of the check valve (74) on the right side.

6. The mine gas detector of claim 1, wherein: The front surface upper side of the shell (1) is fixedly connected with uniformly distributed indicator lights (2), and the input end of the indicator light (2) is electrically connected with the output end of the single-chip microcomputer (14).

7. The mine gas detector of claim 2, wherein: ​

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