Mining intrinsic safety type dust concentration sensor

Abstract

The utility model provides a mining intrinsic safety type dust concentration sensor, which relates to the technical field of sensors and comprises a sensor shell, a second warning lamp shell arranged at the top of the sensor shell, a rear cover arranged on the front side of the sensor shell, a main body inner shell arranged at the bottom of the sensor shell, and a first warning lamp shell arranged on one side of the main body inner shell. According to the mining intrinsic safety type dust concentration sensor, the buzzer is arranged on one side of the sensor shell, the fixing strip is arranged on the front face of the buzzer, the limiting block is arranged on one side of the sensor shell, and the loudspeaker is arranged on the front face of the sensor shell, so that the timeliness is greatly improved when the mining intrinsic safety type dust concentration sensor is used; meanwhile, the prompt function of the sound and light alarm gives out sound and light alarm prompts when the limit is exceeded, so that the mining intrinsic safety type dust concentration sensor is additionally provided with the loudspeaker, the phenomenon that operation errors occur in work due to the fact that the display lamp cannot be watched in time to make timely operation is avoided, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to an intrinsically safe dust concentration sensor for mining. Background Art

[0002] According to the Chinese patent number CN206722882U, a utility model discloses a dust concentration alarm device for mining, which belongs to a mining equipment. The dust concentration alarm device for mining includes a bracket installed on the inner wall of the mine, the bracket is an L-shaped bracket, a dust concentration sensor is installed on the top of the bracket, a dust cover is provided below the dust concentration sensor, a control box is provided below the dust cover, a battery, a wireless transmission module, a timer and a PLC controller are installed in the control box, the dust cover and the control box are both installed on the bracket, and the dust concentration sensor, the wireless transmission module and the timer are respectively connected to the PLC controller. The utility model is provided with a timer and a PLC controller, which can start the dust concentration sensor at a fixed time to detect the dust concentration in the mine. When the concentration exceeds the standard, an alarm signal is sent to a remote computer through the wireless transmission module, thereby improving safety; the dust cover can play a dustproof role for the control box and increase the service life of each component in the box; the structure is simple, easy to use, and convenient for large-scale use in the mine.

[0003] The above-mentioned comparative documents and prior art have the following technical problems:

[0004] 1. The common intrinsically safe dust concentration sensors for mining in the current market are all large in size, which will cause many inconveniences when used. At the same time, most of the intrinsically safe dust concentration sensors for mining are equipped with display lights, and the response of the display lights cannot be seen in time, resulting in operational errors in the work; Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a mining intrinsically safe dust concentration sensor.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a mining intrinsically safe dust concentration sensor, comprising a sensor housing, a second warning light housing is provided on the top of the sensor housing, a back cover is provided on the front of the sensor housing, a main body inner shell is provided on the bottom of the sensor housing, a first warning light housing is provided on the top of the sensor housing, a buzzer is provided on one side of the sensor housing, a fixing strip is provided on the front of the buzzer, and a limit block is provided on one side of the sensor housing.

[0007] Preferably, a speaker is provided on the back of the sensor housing, and the speaker is fixed to the sensor housing via a fixing strip, and a plurality of openings are provided on one side of the speaker.

[0008] Preferably, a plurality of fastening screws are provided on one side of the sensor housing, and the top of each fastening screw is rounded.

[0009] Preferably, a digital tube display screen is provided on the back of the sensor housing, a PCB main board is provided inside the sensor housing, and the digital tube display screen and the PCB main board are connected by welding.

[0010] Preferably, a carrying handle is provided on the top of the sensor housing, and both ends of the carrying handle are fixedly connected to the top of the sensor housing, and the rotating angle of the carrying handle is ninety degrees.

[0011] Preferably, a warning light is provided on the top of the sensor housing, and the warning light is electrically connected to the PCB main board, and the warning light is connected to the sensor housing.

[0012] Preferably, a power interface is provided on one side of the sensor housing, and the power interface is electrically connected to the PCB main board and connected to the sensor housing through a nut.

[0013] Beneficial Effects

[0014] In the utility model, a speaker is provided on the front side of the sensor housing, which greatly increases the timeliness when using the intrinsically safe dust concentration sensor for mining. At the same time, the sound and light alarm prompt function emits sound and light alarm prompts when the limit is exceeded. Therefore, the intrinsically safe dust concentration sensor for mining is equipped with a speaker, and there will be no mistakes in work operation due to failure to timely observe the display light and make timely operations, but the work efficiency is greatly improved.

[0015] In the utility model, a main body inner shell is installed on one side of the sensor shell, and the entire shell is also designed with 304 stainless steel material, which enhances the sensor's impact resistance, corrosion resistance and anti-interference ability, and the waterproof grade reaches IP65. At the same time, the mining intrinsically safe dust concentration sensor has a simple and compact structure, is easy to carry, and is sturdy and durable. After the main body inner shell is installed, the use efficiency of the mining intrinsically safe dust concentration sensor is greatly increased.

[0016] In the utility model, a second warning light housing is installed on one side of the first warning light housing, so that when using the mining intrinsically safe dust concentration sensor, high-precision measurement can be achieved and a very fast response can be achieved. The mining intrinsically safe dust concentration sensor plays a very important role in control and measurement, and can greatly improve the efficiency of equipment use.

[0017] In the utility model, a digital tube display screen is added to the shell of the sensor shell, so that when using the mining intrinsically safe dust concentration sensor, the mining intrinsically safe dust concentration sensor can be used more conveniently. Since the volume of the digital tube display screen is very small, it is more compact than the traditional mechanical digital display and can be conveniently installed in various electronic instruments. At the same time, the digital tube display screen has a high brightness and high contrast display effect, and can clearly display numbers, even in strong light. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an isometric view of the utility model;

[0019] Figure 2 It is a front view of the utility model;

[0020] Figure 3 It is an axonometric drawing of the utility model;

[0021] Figure 4 It is a cross-sectional view of the utility model.

[0022] Legend:

[0023] 1. Sensor housing; 2. First warning light housing; 3. Main body inner housing; 4. Digital tube display screen; 5. Second warning light housing; 6. Speaker; 7. Warning light; 8. Power interface; 9. Carrying handle; 10. Fastening screws; 11. Limit block; 12. Fixing strip; 13. Buzzer; 14. Back cover. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0025] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings. Specific embodiment one:

[0027] Reference Figure 1-4The intrinsically safe dust concentration sensor for mining comprises a sensor housing 1, a second warning light housing 5 is arranged on the top of the sensor housing 1, a digital tube display screen 4 is arranged on the back of the sensor housing 1, a PCB main board is arranged inside the sensor housing 1, and the digital tube display screen 4 is connected to the PCB main board by welding, a speaker 6 is arranged on the back of the sensor housing 1, and the speaker 6 is fixed to the sensor housing 1 through a fixing strip 12, a plurality of openings are arranged on one side of the speaker 6, a warning light 7 is arranged on the top of the sensor housing 1, and the warning light 7 is electrically connected to the PCB main board, the warning light 7 is connected to the sensor housing 1, a power interface 8 is arranged on one side of the sensor housing 1, and the power interface 8 is electrically connected to the PCB main board and is connected to the sensor housing 1 through a nut. A back cover 14 is provided on the front of the sensor housing 1. A main body inner shell 3 is provided at the bottom of the sensor housing 1. A first warning light housing 2 is provided on one side of the main body inner shell 3. A buzzer 13 is provided on one side of the sensor housing 1. A fixing strip 12 is provided on the front of the buzzer 13. A carrying handle 9 is provided on the top of the sensor housing 1, and both ends of the carrying handle 9 are fixedly connected to the top of the sensor housing 1. The rotating angle of the carrying handle 9 is ninety degrees. A plurality of fastening screws 10 are provided on one side of the sensor housing 1, and the top of each fastening screw 10 is rounded. A limit block 11 is provided on one side of the sensor housing 1.

[0028] When using the intrinsically safe dust concentration sensor for mining, the user can achieve high-precision measurement and very fast response through the second warning light housing 5 on the side of the first warning light housing 2. The intrinsically safe dust concentration sensor for mining plays a very important role in control and measurement, and can greatly improve the efficiency of equipment use. At the same time, after installing the speaker 6, there will be no operational errors in the work due to the inability to timely observe the timely operation of the display light, but the work efficiency will be greatly improved. At the same time, the main body inner shell 3 is designed with 304 stainless steel material, which enhances the sensor's impact resistance, corrosion resistance and anti-interference ability, and the waterproof level reaches IP65. Therefore, the intrinsically safe dust concentration sensor for mining has a simple and compact structure, is easy to carry, and is sturdy and durable. After installing the main body inner shell 3, the efficiency of using the intrinsically safe dust concentration sensor for mining is greatly increased. Specific embodiment 2:

[0030] Reference Figure 1-4 A data transmission device is installed on one side of the sensor housing 1 to reduce the sensor signal lines to a minimum, so that more sensor signals can be transmitted at high speed. In this way, when using the mining intrinsically safe dust concentration sensor, data can be transmitted in a timely manner, and data loss due to other factors will not occur. After the data is detected, it will be directly transmitted to the client to save the data.

[0031] The working principle of the dust sensor is developed based on the principle of light scattering. Particles and molecules will scatter light under the irradiation of light, and at the same time, they will absorb part of the energy of the irradiated light. When a beam of parallel monochromatic light is incident on the particle field to be measured, it will be affected by the scattering and absorption around the particles, and the light intensity will be attenuated. In this way, the relative attenuation rate of the incident light passing through the concentration field to be measured can be obtained. The magnitude of the relative attenuation rate can basically linearly reflect the relative concentration of dust in the field to be measured. The magnitude of the light intensity is proportional to the strength of the electrical signal converted by photoelectric conversion. By measuring the electrical signal, the relative attenuation rate can be obtained, and then the concentration of dust in the field to be measured can be determined. The dust sensor is designed to sense dust particles in the air. Infrared light-emitting diodes and phototransistors are placed diagonally inside it. Their optical axes intersect. When the airflow with dust passes through the intersection area where the optical axes intersect, the dust reflects the infrared light, and the reflected light intensity is proportional to the dust concentration. The phototransistor enables it to detect the reflected light from dust in the air, even very small particles such as tobacco smoke can be detected. The infrared light emitting diode emits light and generates reflected light when it encounters dust. The receiving sensor detects the intensity of the reflected light and outputs a signal. The concentration of dust is determined based on the intensity of the output signal, and the concentrations of different dust particles are distinguished by outputting two different pulse width modulation signals.

[0032] In summary:

[0033] 1. A loudspeaker 6 is provided on the front of the sensor housing 1, which increases the timeliness when using the intrinsically safe dust concentration sensor for mining. At the same time, the sound and light alarm prompt function sends out sound and light alarm prompts when the limit is exceeded. Therefore, the intrinsically safe dust concentration sensor for mining is equipped with a loudspeaker 6, which will not cause mistakes in work operation due to the inability to timely observe the timely operation of the display light, but greatly improve the work efficiency;

[0034] 2. The main body inner shell 3 is installed on one side of the sensor housing 1, so that the whole housing is also designed with 304 stainless steel material, which enhances the sensor's anti-impact, anti-corrosion and anti-interference capabilities, and the waterproof level reaches IP65. Therefore, the mining intrinsically safe dust concentration sensor has a simple and compact structure, is easy to carry, and is durable. After the main body inner shell 3 is installed, the use efficiency of the mining intrinsically safe dust concentration sensor is greatly increased;

[0035] 3. By installing a second warning light housing 5 on one side of the first warning light housing 2, it is achieved that when using the mining intrinsically safe dust concentration sensor, high-precision measurement can be achieved and a very fast response can be achieved. The mining intrinsically safe dust concentration sensor plays an important role in control and measurement and can greatly improve the efficiency of equipment use;

[0036] 4. A digital tube display screen 4 is installed on the outer shell of the sensor housing 1, so that when using the mining intrinsically safe dust concentration sensor, it can be used more conveniently. Because the digital tube display screen 4 is very small, it is more compact than the traditional mechanical digital display and can be easily installed in various electronic instruments. At the same time, the digital tube display screen 4 has a high brightness and high contrast display effect, and can clearly display numbers, even in strong light.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A mine-use intrinsically safe dust concentration sensor, comprising a sensor housing (1), characterized in that: A second warning light housing (5) is provided on the top of the sensor housing (1), a rear cover (14) is provided on the front of the sensor housing (1), a main body inner housing (3) is provided on the bottom of the sensor housing (1), a first warning light housing (2) is provided on one side of the main body inner housing (3), a buzzer (13) is provided on one side of the sensor housing (1), a fixing strip (12) is provided on the front of the buzzer (13), and a limit block (11) is provided on one side of the sensor housing (1).

2. The intrinsically safe dust concentration sensor for mining according to claim 1 is characterized in that: A loudspeaker (6) is provided on the back of the sensor housing (1), and the loudspeaker (6) is fixed to the sensor housing (1) via a fixing strip (12), and a plurality of openings are provided on one side of the loudspeaker (6).

3. The intrinsically safe dust concentration sensor for mining according to claim 1 is characterized in that: A plurality of fastening screws (10) are provided on one side of the sensor housing (1), and the top of each fastening screw (10) is rounded.

4. The intrinsically safe dust concentration sensor for mining according to claim 1 is characterized in that: A digital tube display screen (4) is provided on the back of the sensor housing (1), a PCB main board is provided inside the sensor housing (1), and the digital tube display screen (4) and the PCB main board are connected by welding.

5. The intrinsically safe dust concentration sensor for mining according to claim 1 is characterized in that: A carrying handle (9) is provided on the top of the sensor housing (1), and both ends of the carrying handle (9) are fixedly connected to the top of the sensor housing (1), and the rotating angle of the carrying handle (9) is ninety degrees.

6. The intrinsically safe dust concentration sensor for mining according to claim 1 is characterized in that: A warning light (7) is provided on the top of the sensor housing (1), and the warning light (7) is electrically connected to the PCB main board. The warning light (7) is connected to the sensor housing (1).

7. The intrinsically safe dust concentration sensor for mining according to claim 1 is characterized in that: A power interface (8) is provided on one side of the sensor housing (1), and the power interface (8) is electrically connected to the PCB main board and connected to the sensor housing (1) via a nut.

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