Mine safety ventilation and gas monitoring device

Abstract

The invention relates to the technical field of mine ventilation, in particular to a mine safety ventilation and gas monitoring device. Comprising an air supply system and an exhaust system, an air inlet cavity, an air supply cavity and a dust falling cavity are sequentially formed in a box body of the air supply system, and a refrigeration module is further arranged on a cavity body of the air supply cavity; a main air inlet is formed in the air inlet cavity, a main air supply outlet is further formed in the air supply cavity, the main air inlet is sequentially communicated with all cavities in the air supply system and finally communicated with the main air supply outlet, and an air supply filtering module is further arranged in a cavity body of the air inlet cavity. An air exhaust filtering cavity and an air exhaust cavity are sequentially arranged in the air exhaust system box body, a main air exhaust opening is formed in the air exhaust filtering cavity, a main air outlet is further formed in the air exhaust cavity, an air exhaust pipeline is connected to the main air exhaust opening, and a gas monitoring module is further installed in the air exhaust pipeline; the air circulation filtering effect is better, the refrigerating efficiency is better, the dust falling efficiency is higher, and the safety and comfort of the working environment under the mine are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mine ventilation, and particularly relates to a mine safety ventilation and gas monitoring device. Background Art

[0002] Mine ventilation mainly uses mechanical ventilation methods to continuously supply fresh air into the mine for personnel to breathe, dilute and discharge harmful gases and floating dust. Mine workers work underground in a narrow space with poor air circulation. Workers working underground for a long time and breathing continuously will cause the carbon dioxide in the mine to increase continuously, while the oxygen in the mine will decrease continuously. At the same time, there will be a large amount of harmful gases and dust, which will make the air environment in the mine more complex; if workers work in a harmful environment for a long time, they may suffer from various diseases, especially respiratory diseases. In addition, if some gases in the mine are not discharged in time, it may cause serious consequences such as explosion accidents in the mine; therefore, improving the climate conditions in the mine is the basis for ensuring safe mine operation and disaster prevention and control.

[0003] With the continuous improvement and optimization of mine ventilation technology, at present, many mines have achieved ventilation inside them. However, the existing mine ventilation devices usually have relatively scattered functions. Their ventilation, dust removal, refrigeration, gas monitoring and other equipment are usually independent operating structures, with complex systems and high space occupancy. At the same time, the coordination between various equipment is poor, resulting in the actual air environment quality inside the mine not meeting the expected standards; therefore, there is an urgent need for a mine safety ventilation and gas monitoring device that can effectively improve the air environment inside the mine to improve the air quality and safety underground. Summary of the Invention

[0004] The purpose of the present invention is to provide a mine safety ventilation and gas monitoring device to solve the problems of poor air circulation and filtration effect, limited refrigeration efficiency, and low dust removal efficiency in the existing mine ventilation devices in the background art, so as to improve the safety and comfort of the underground operation environment.

[0005] The above technical object of the present invention is achieved through the following technical solutions: A mine safety ventilation and gas monitoring device, including a air supply system and an exhaust system. Inside the air supply system box body, an air inlet chamber, an air supply chamber and a dust removal chamber are sequentially arranged. A refrigeration module is also arranged on the cavity of the air supply chamber; A main air inlet is arranged on the air inlet chamber, and a main air supply outlet is also arranged on the air supply chamber. The main air inlet is sequentially communicated with each chamber inside the air supply system and finally communicated with the main air supply outlet. A air supply filtration module is also arranged in the cavity of the air inlet chamber; Inside the exhaust system box body, an exhaust filtration chamber and an exhaust chamber are sequentially arranged. A main exhaust outlet is arranged on the exhaust filtration chamber, and a main air outlet is also arranged on the exhaust chamber. A exhaust duct is connected to the main exhaust outlet, and a gas monitoring module is also installed inside the exhaust duct.

[0006] Preferably, the air supply filtration module in the air inlet chamber is a multi-stage filtration unit, and a primary filter, a medium filter and a high-efficiency filter are sequentially arranged. The primary filter is made of a folded coarse filter screen and is used to filter large particle dust and debris in the air; The medium filter is made of an activated carbon filter screen and is used to adsorb odors, harmful gases and organic pollutants in the air; The high-efficiency filter is made of a HEPA filter screen and is used to filter fine dust in the air; The multi-stage filtration design of the air supply filtration module can effectively filter particulate debris and harmful gases in the air. The folded coarse filter screen of the primary filter has a higher dust capacity and a larger filtration area, which has certain advantages in the large-flow mine air supply system. The activated carbon filter screen of the medium filter has a strong surface adsorption capacity and can effectively control the odor and organic pollution in the air. The HEPA filter screen of the high-efficiency filter has a removal efficiency of more than 99.7% for particles with a diameter of more than 0.3 microns and can effectively filter fine particles such as smoke, bacteria and microorganisms in the fresh air.

[0007] Preferably, a dust-proof net is installed at the inlet position of the main air inlet on the air inlet chamber. A blower is arranged in the air supply chamber. The inner diameter of the air inlet chamber is larger than that of the air supply chamber, which is used to increase the flow rate of the fresh air sent by the blower and improve the heat exchange efficiency between the fresh air and the refrigeration module. The refrigeration module is used to cool the fresh air in the air supply chamber; the inner diameter sizes of the air inlet chamber and the air supply chamber are designed based on Bernoulli's principle. The blower is arranged in the air supply chamber with a smaller size. When the blower is started, the external fresh air will first enter the air inlet chamber with a larger size when it reaches the main air inlet. When the fresh air flows through the air supply chamber with a narrower size, the flow rate of the fresh air will increase. Therefore, the flow rate of the fresh air entering the air supply duct will also increase, enhancing the penetration ability of the air flow, enabling the fresh air to be sent to a farther working environment in the mine, and ensuring the uniformity of air supply; at the same time, a refrigeration module is integrated on the air supply chamber, and the high-speed flowing air can more effectively take away the cold generated by the refrigeration module, shortening the refrigeration time of the fresh air.

[0008] Preferably, the refrigeration module is provided with cooling pipes wound around the outer wall of the air supply chamber. The cooling pipes are connected to the evaporator of the refrigeration module. A cooling liquid is arranged in the cooling pipes. A circulation pump is also arranged on the pipeline of the cooling pipes for circulating the cooling liquid in the pipeline; the evaporator and the condenser of the refrigeration module are connected through a refrigeration pipe. A refrigerant is arranged in the refrigeration pipe. The refrigeration pipe is also provided with a compressor; the cooling pipes are arranged around the air supply chamber. The cooling pipes contain a coolant. When the cooling module works, the coolant will circulate in the cooling pipes under the action of the circulation pump. The cold generated by the coolant will be taken away by the fresh air flow passing through the air supply chamber. The coolant with the cold taken away will return to the evaporator. The evaporator and the condenser are connected through a refrigeration pipe. The refrigeration pipe contains a refrigerant. The refrigerant will transfer its own cold to the coolant in the evaporator. After being refrigerated, the coolant will circulate again to the cooling pipes of the air supply chamber to cool the fresh air, completing the circulation of the coolant; after the refrigerant absorbs heat in the evaporator, it will be compressed by the compressor to form a high-temperature and high-pressure gas. After the high-temperature and high-pressure refrigerant gas enters the condenser, the condenser will release heat and liquefy it into a refrigerant liquid. The liquid refrigerant will enter the evaporator again to complete the circulation.

[0009] Preferably, a ventilation duct is installed on the main air supply outlet of the air supply chamber. The ventilation duct is a segmented detachable installation structure. Each section of the ventilation duct includes a duct body and installation flanges at both ends. The installation flanges are provided with a number of installation holes. Each section of the ventilation duct is locked and fixed by screws through the installation flanges to form a complete ventilation duct. A duct air outlet is also provided on the duct body of the ventilation duct. The ventilation duct is designed as a bendable hose structure, which can adapt to the complex curved environment in the mine. At the same time, the ventilation duct is designed as a detachable installation structure, which can better cope with different lengths or depths of mine application scenarios, making the air supply system more practical. The ventilation duct can also be provided with duct air outlets at different positions, so that the fresh air sent in is more dispersed in the mine and will not be concentrated at a certain point for air supply, further improving the safety of mine ventilation.

[0010] Preferably, a dust removal module is arranged in the dust removal chamber, including a booster pump. The input end of the booster pump is connected to a water tank arranged outside the air supply system. The output end of the booster pump is connected to a dust removal pipeline. The dust removal pipeline is arranged inside the ventilation duct and is arranged along the pipeline of the ventilation duct. Atomizing nozzles are also installed at the positions of each duct air outlet of the dust removal pipeline. The atomizing nozzles are connected to the booster pump and the water tank through the dust removal pipeline. The booster pump can increase the water in the water tank and transport it to the atomizing nozzles through the dust removal pipeline. The atomizing nozzles can atomize the water flow into water mist with a particle size of 10-50 microns to capture dust, so that the dust particles combine with the water mist and settle, which can effectively inhibit respirable dust and especially solve the problem of fine dust.

[0011] Preferably, an exhaust filtration module is provided in the exhaust filtration chamber of the exhaust system. The exhaust filtration module is a multi-stage filtration unit, successively provided with a dust removal filtration layer, an adsorption filtration layer, and a super-clean filtration layer. The dust removal filtration layer is made of a synthetic fiber non-woven fabric filter screen and is used to filter large and medium-sized dust particles in the air. The adsorption filtration layer is made of an activated carbon filter screen and is used for purifying harmful gases in the mine environment. The super-clean filtration layer is made of a HEPA filter screen and is used to intercept free inorganic substances and microbial particles in the mine dust. A exhaust fan is also provided in the exhaust chamber. The exhaust fan can exhaust the air in the mine after passing through the exhaust filtration module. The exhaust filtration module provided in the filtration chamber of the exhaust system and the air supply filtration module of the air supply system are both multi-stage filtration units, realizing the integrated treatment of "dust removal - purification - super-clean" for mine exhaust. The synthetic fiber non-woven fabric filter screen of the dust removal filtration layer can effectively intercept large particle dust such as slag debris and fibers, extending the service life of subsequent filter materials. The activated carbon filter screen of the adsorption filtration layer has a high adsorption efficiency and can adsorb heavy metals, oil stains, volatile organic compounds, etc. in the dust, and can also adsorb toxic gases in the mine environment, with extremely high gas purification efficiency. The HEPA filter screen of the super-clean filtration layer is an efficient air filter that can intercept nano-scale particles with an interception efficiency greater than 99.7%.

[0012] Preferably, the exhaust duct is a segmented assembled structure. Each section of the exhaust duct is tightly connected by screws. An air outlet is also provided on the segmented exhaust duct where exhaust is required. A gas monitoring module is provided on the air outlet of the exhaust duct to monitor the air quality in the mine. The structure design of the exhaust duct is the same as that of the air supply duct. The exhaust duct is also designed to be bendable, capable of adapting to the complex curved structure environment in the mine tunnel. At the same time, the detachable structure design can be better applied to mine tunnel environments at different depths. A gas monitoring module for monitoring the air quality in the mine is also installed at the position of the air outlet on the exhaust duct. The gas monitoring module is in a real-time monitoring state regardless of whether the exhaust system is started. When the exhaust system is started, when the air in the mine environment passes through the air outlet, the gas monitoring module can better detect the air in the mine internal environment, and the analyzed data is more accurate, making the air circulation in the mine safer for the staff.

[0013] Preferably, at least a dust concentration sensor, an oxygen concentration sensor, a methane concentration sensor, a carbon monoxide concentration sensor, a temperature sensor and a humidity sensor are integrated on the gas monitoring module; the gas monitoring module integrates at least but is not limited to these modules. Among them, the oxygen concentration sensor can detect the oxygen concentration inside the mine in real time to avoid the lack of oxygen in the mine tunnel. Cooperating with the dust concentration sensor to detect the dust content in the mine tunnel further improves the work safety of the staff in the mine. At the same time, combining the temperature sensor and the humidity sensor to detect the temperature and humidity in the mine, the mine ventilation system can adjust the temperature and humidity inside the mine in real time, improving the comfort of the staff working in the mine. The harmful gas detection device integrated on the gas monitoring module can monitor the concentration of harmful gases in the mine. When the concentration reaches the threshold, the power of the exhaust system is immediately turned up to the maximum, greatly improving the personal safety of the staff and the safety of the ventilation system.

[0014] Preferably, the ventilation system further includes an intelligent control unit, and the control logic of the intelligent control unit is as follows: when the oxygen concentration sensor in the gas monitoring module detects that the oxygen concentration in the mine does not reach the preset value, the air supply passage of the air supply system is automatically opened, and at the same time, the rotation speed of the air supply fan is increased to the maximum; when the temperature and humidity sensor in the gas monitoring module detects that the temperature and humidity in the mine exceed the preset value, the refrigeration module is automatically started to reduce the temperature and humidity of the fresh air sent into the mine; when the dust concentration sensor in the gas monitoring module detects that the dust concentration in the mine exceeds the threshold, the working intensity of the dust reduction module in the dust reduction chamber is automatically started and adjusted; when any harmful gas concentration sensor in the gas monitoring module detects that the harmful gas concentration exceeds the standard, the exhaust passage of the exhaust system is automatically opened, and at the same time, the rotation speed of the exhaust fan is increased to the maximum, and the alarm device is triggered.

[0015] Working principle of the present invention: When the air supply system operates, the air blower in the air supply chamber sucks external air from the air inlet chamber into the interior of the air supply system. First, the dust-proof net on the main air inlet filters out impurities such as leaves and large particulate matters in the air, and then the air enters the air inlet chamber; in the air inlet chamber, the air will be filtered and purified by the air supply filtration module to remove impurity particles and harmful gases in the air, and then the air enters the air supply chamber. The refrigeration module in the air supply chamber will cool the air. The cooled fresh air will enter the interior of the mine through the air supply pipeline to achieve air supply to the interior of the mine. The atomizing nozzles of the dust reduction module on the air supply system will spray water mist into the air when the dust concentration in the mine exceeds the standard, so that the water mist combines with the dust particles in the air and then settles, achieving the purpose of dust reduction; when the exhaust system operates, the exhaust fan in the exhaust chamber starts to operate. The air inside the mine tunnel will enter the exhaust pipeline through the exhaust port under the action of the exhaust fan. When the air reaches the exhaust filtration chamber of the exhaust system, the exhaust filtration module in the exhaust filtration chamber will filter and purify the waste gas. The purified air is discharged through the main exhaust port on the exhaust chamber, completing the exhaust of the air inside the mine. The air supply system and the exhaust system work together to complete the ventilation cycle of the interior of the mine; at the same time, the gas monitoring module on the ventilation device can monitor the air environment inside the mine in real time, and transmit data such as dust concentration, oxygen concentration, temperature and humidity, and harmful gas concentration to the intelligent control unit. When some data exceed the preset threshold, the intelligent control unit will automatically control the corresponding module to operate to improve the air environment inside the mine, greatly improving the safety of the air environment inside the mine.

[0016] In summary, the beneficial effects of the present invention are as follows: 1. The mine safety ventilation and gas monitoring device described in the present invention is provided with an air supply system and an exhaust system, and integrates an air filtration module, a refrigeration module, a dust reduction module, a gas monitoring module, etc. into one. The structure is compact and convenient for deployment and maintenance in the mine, and can simultaneously realize functions such as filtration cycle, refrigeration, dust reduction and safety monitoring of the air in the mine, effectively improving the air quality in the mine shaft and providing a safe and comfortable working environment for the operators. 2. The mine safety ventilation and gas monitoring device described in the present invention can monitor data in real time through the gas monitoring module, and through the intelligent control of each module by the intelligent control unit, it can automatically adjust the working state according to the changes in the mine air environment, realizing a closed-loop control of "perception - analysis - execution", greatly improving the safety response speed and reliability, and improving the intelligent level and working efficiency of the ventilation device. 3. A mine safety ventilation and gas monitoring device according to the present invention, through the multi-stage filtration structure design of the air supply filtration module and the exhaust filtration module, significantly reduces the concentration of dust and harmful gases in the ventilation cycle air. At the same time, in cooperation with the atomizing dust reduction work of the dust reduction module, it solves the problem of fine dust in the mine operation process, can effectively inhibit respirable dust, and the wet dust reduction method effectively avoids the secondary dust raising problem of dry dust removal, improving the work comfort and safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the air supply system of the present invention; Figure 2 is a schematic internal structure diagram of the air supply system of the present invention; Figure 3 is a schematic structural diagram of the refrigeration module of the present invention; Figure 4 is a schematic structural diagram of the dust removal module of the present invention; Figure 5 is a schematic structural diagram of the exhaust system of the present invention; Figure 6 is a schematic internal structure diagram of the exhaust system of the present invention; Figure 7 is a schematic structural diagram of the integrated ventilation system of the present invention.

[0018] Reference numerals in the figures: 1 - air supply system, 10 - air inlet chamber, 11 - refrigeration module, 111 - cooling pipe, 112 - circulation pump, 113 - evaporator, 114 - refrigeration pipe, 115 - compressor, 116 - condenser, 12 - air supply chamber, 121 - air supply fan, 13 - dust reduction chamber, 131 - booster pump, 132 - water tank, 133 - dust removal pipeline, 134 - atomizing nozzle, 14 - air supply filtration module, 141 - primary filter, 142 - intermediate filter, 143 - high efficiency filter, 15 - main air inlet, 151 - dustproof net, 16 - main air supply outlet, 2 - exhaust system, 21 - exhaust filtration chamber, 22 - exhaust chamber, 23 - main exhaust outlet, 24 - main air outlet, 25 - exhaust pipeline, 251 - exhaust port, 26 - exhaust filtration module, 261 - dust removal filter layer, 262 - adsorption filter layer, 263 - ultra-clean filter layer, 27 - exhaust fan, 3 - gas monitoring module, 4 - air supply pipeline, 41 - pipeline body, 42 - mounting flange, 43 - mounting hole, 44 - pipeline air outlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following specific embodiments are only explanations of the present invention and are not limitations thereof. Those skilled in the art can make modifications without creative contributions to the embodiments according to needs after reading this specification, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0020] The present invention will be described in detail below with reference to the accompanying drawings by way of examples.

[0021] Example 1

[0022] According to Figure 1 、 Figure 2 As shown, a mine safety ventilation and gas monitoring device includes a air supply system 1. Inside the box body of the air supply system 1, an air inlet chamber 10, an air supply chamber 12 and a dust removal chamber 13 are sequentially arranged. A refrigeration module 11 is also arranged on the cavity of the air supply chamber 12; a main air inlet 15 is arranged on the air inlet chamber 10, and a main air supply outlet 16 is also arranged on the air supply chamber 12. The main air inlet 15 is communicated with each chamber inside the air supply system 1 in sequence and finally communicated with the main air supply outlet 16. An air supply filtering module 14 is also arranged in the cavity of the air inlet chamber 10.

[0023] According to Figure 2 As shown, the air supply filtering module 14 in the air inlet chamber 10 is a multi-stage filtering unit, which is sequentially provided with a primary filter 141, a medium filter 142 and a high-efficiency filter 143. The primary filter 141 is made of a folded coarse filter screen and is used to filter large particle dust and sundries in the air; the medium filter 142 is made of an activated carbon filter screen and is used to adsorb odors, harmful gases and organic pollutants in the air; the high-efficiency filter 143 is made of a HEPA filter screen and is used to filter fine dust in the air; the multi-stage filtering design of the air supply filtering module 14 can effectively filter particle sundries and harmful gases in the air. Among them, the folded coarse filter screen of the primary filter 141 has a higher dust capacity and a larger filtering area, which has certain advantages in the large-flow mine air supply system. The activated carbon filter screen of the medium filter 142 has a strong surface adsorption capacity and can effectively control the odor and organic pollution in the air. The HEPA filter screen of the high-efficiency filter 143 has a particle removal efficiency of more than 99.7% for particles with a diameter of more than 0.3 microns and can effectively filter fine particles such as smoke, bacteria and microorganisms in the fresh air.

[0024] According to According Figure 2As shown in the figure, a dust-proof net 151 is installed at the inlet position of the main air inlet 15 on the air inlet chamber 10. A blower 121 is arranged in the air supply chamber 12. The inner diameter of the air inlet chamber 10 is larger than that of the air supply chamber 12, which is used to increase the flow rate of the fresh air sent by the blower 121, and at the same time increase the heat exchange efficiency between the fresh air and the refrigeration module 11. The refrigeration module 11 is used to cool the fresh air in the air supply chamber 12; the inner diameter sizes of the air inlet chamber 10 and the air supply chamber 12 are designed according to Bernoulli's principle. The blower 121 is arranged in the air supply chamber 12 with a smaller size. When the blower 121 is started, the external fresh air will first enter the air inlet chamber 10 with a larger chamber size after reaching the main air inlet 15. When the fresh air flows through the air supply chamber 12 with a narrower chamber size, the feeding speed of the fresh air will increase. Therefore, the feeding speed of the fresh air reaching the air supply duct 4 will also increase, enhancing the penetration ability of the air flow, so that the fresh air can be sent to a farther working environment in the mine, and the uniformity of the air supply is also ensured; at the same time, the refrigeration module 11 is integrated on the air supply chamber 12, and the high-speed flowing air flow can more effectively take away the cold generated by the refrigeration module 11, shortening the refrigeration time of the fresh air.

[0025] According to Figure 2 、 Figure 3 As shown in the figure, a cooling pipe 111 is wound around the outer wall of the air supply chamber 12 of the refrigeration module 11. The cooling pipe 111 is communicated with the evaporator 113 of the refrigeration module 11. A cooling liquid is arranged in the cooling pipe 111, and a circulation pump 112 is also arranged on the pipeline of the cooling pipe 111 for circulating the cooling liquid in the pipeline; the evaporator 113 is communicated with the condenser 116 of the refrigeration module 11 through a refrigeration pipe 114. A refrigerant is arranged in the refrigeration pipe 114, and a compressor 115 is also arranged on the refrigeration pipe 114; the cooling pipe 111 is arranged around the air supply chamber 12. The cooling pipe 111 contains a coolant. When the cooling module 11 works, the coolant will circulate in the cooling pipe 111 under the action of the circulation pump 112, and the cold generated by the coolant will be taken away by the fresh air flow passing through the air supply chamber 12. The coolant with the taken-away cold will return to the evaporator 113. The evaporator 113 is communicated with the condenser 116 through the refrigeration pipe 114. The refrigeration pipe 114 contains a refrigerant. The refrigerant will transfer its own cold to the coolant in the evaporator 113. After being refrigerated, the coolant will circulate again to the cooling pipe 111 of the air supply chamber 12 to cool the fresh air, completing the circulation of the coolant; and the refrigerant will absorb heat in the evaporator 113 and then be compressed by the compressor 115 to form a high-temperature and high-pressure gas. After the high-temperature and high-pressure refrigerant gas enters the condenser 116, the condenser 116 will release heat and liquefy it into a refrigerant liquid, and the liquid refrigerant will enter the evaporator 113 again to complete the cycle.

[0026] According to Figure 1As shown in the figure, a ventilation duct 4 is also installed on the main air supply outlet 16 of the air supply chamber 12. The ventilation duct 4 is a segmented detachable installation structure. Each section of the ventilation duct 4 includes a duct main body 41 and installation flanges 42 at both ends. The installation flanges 42 are provided with a number of installation holes 43. Each section of the ventilation duct 4 is locked and fixed by screws through the installation flanges 42 to form a complete ventilation duct 4. A duct air outlet 44 is also provided on the duct main body 41 of the ventilation duct 4. The ventilation duct 4 is designed as a bendable hose structure, which can adapt to the complex curved environment in the mine. At the same time, the ventilation duct 4 is designed as a detachable installation structure, which can better cope with the application scenarios of mines with different lengths or depths, making the practicability of the air supply system 1 stronger. The ventilation duct 4 can also be provided with duct air outlets at different positions, so that the fresh air sent in is more dispersed in the mine and will not be concentrated at a certain point for air supply, further improving the safety of mine ventilation.

[0027] According to Figure 2 、 Figure 4 As shown in the figure, a dust removal module is arranged in the dust removal chamber 13, including a booster pump 131. The input end of the booster pump 131 is connected to a water tank 132 arranged outside the air supply system 1, and the output end of the booster pump 131 is connected to a dust removal duct 133. The dust removal duct 133 is arranged inside the ventilation duct 4 and is arranged along the pipeline of the ventilation duct 4. Atomizing nozzles 134 are also installed at the positions of each duct air outlet 44 of the dust removal duct 133. The atomizing nozzles 134 are connected to the booster pump 131 and the water tank 132 through the dust removal duct 133. The booster pump 131 can increase the water in the water tank 132 and transport it to the atomizing nozzles 134 through the dust removal duct 133. The atomizing nozzles 134 can atomize the water flow into water mist with a particle size of 10-50 microns to capture dust, so that the dust particles combine with the water mist and settle, which can effectively inhibit respirable dust and especially solve the problem of fine dust.

[0028] Working principle of the air supply system 1: When the air supply system 1 operates, the air supply fan 121 in the air supply chamber 12 sucks external air from the air inlet chamber 10 into the air supply system 1. First, impurities such as leaves and large particles in the air are filtered out by the dust-proof net 151 on the main air inlet 15, and then enter the air inlet chamber 10. The air in the air inlet chamber 10 will be filtered and purified by the air supply filtration module 14 to remove impurity particles and harmful gases in the air. Then the air enters the air supply chamber 12. The refrigeration module 11 in the air supply chamber 12 will cool the air. The cooled fresh air will enter the mine through the ventilation duct 4 to realize air supply inside the mine. The atomizing nozzles 134 of the dust removal module on the air supply system 1 will spray water mist into the air when the dust concentration in the mine exceeds the standard, so that the water mist combines with the dust particles in the air and settles, achieving the purpose of dust reduction.

[0029] Embodiment 2

[0030] The difference from the above-mentioned Embodiment 1 is that according to Figure 5 and Figure 6 as shown, a mine safety ventilation and gas monitoring device further includes an exhaust system 2. Inside the box body of the exhaust system 2, an exhaust filtration chamber 21 and an exhaust chamber 22 are sequentially arranged. A main exhaust port 23 is provided on the exhaust filtration chamber 21, and a main air outlet 24 is further provided on the exhaust chamber 22. An exhaust duct 25 is connected to the main exhaust port 23, and a gas monitoring module 3 is further installed inside the exhaust duct 25.

[0031] According to Figure 6 as shown, an exhaust filtration module 26 is arranged inside the exhaust filtration chamber 21 of the exhaust system 2. The exhaust filtration module 26 is a multi-stage filtration unit, and a dust removal filtration layer 261, an adsorption filtration layer 262, and a super-clean filtration layer 263 are sequentially arranged. The dust removal filtration layer 261 is made of a synthetic fiber non-woven fabric filter screen and is used to filter large and medium-sized dust particles in the air. The adsorption filtration layer 262 is made of an activated carbon filter screen and is used for purifying harmful gases in the mine environment. The super-clean filtration layer 263 is made of a HEPA filter screen and is used to intercept free inorganic substances and microbial particles in the mine dust; an exhaust fan 27 is further arranged inside the exhaust chamber 22, and the exhaust fan 27 can exhaust the air in the mine after passing through the exhaust filtration module 26; the exhaust filtration module 26 arranged in the exhaust filtration chamber 21 of the exhaust system 2 is a multi-stage filtration unit, realizing the "dust removal - purification - super-clean" integrated treatment of mine exhaust; the synthetic fiber non-woven fabric filter screen of the dust removal filtration layer 261 can effectively intercept large particle dust such as slag debris and fibers, extending the service life of subsequent filter materials; the activated carbon filter screen of the adsorption filtration layer 262 has a high adsorption efficiency, can adsorb heavy metals, oil stains, volatile organic compounds, etc. in the dust, and can also adsorb toxic gases in the mine environment, with extremely high gas purification efficiency; the HEPA filter screen of the super-clean filtration layer 263 is an efficient air filter, can intercept nano-scale particles, and the interception efficiency is greater than 99.7%.

[0032] According to Figure 5 and Figure 6As shown, the exhaust duct 25 is a segmented assembled structure. Each section of the exhaust duct 25 is locked and connected by screws. An air outlet 251 is also provided on the segmented exhaust duct 25 that needs to exhaust air. A gas monitoring module 3 is arranged on the air outlet 251 of the exhaust duct 25 to monitor the air quality in the mine. The exhaust duct 25 is also designed with a bendable structure, which can adapt to the complex curved structure environment in the mine tunnel. At the same time, the detachable structure design can be better applied to the mine tunnel environment at different depths. A gas monitoring module 3 for monitoring the air quality in the mine is also installed at the position of the air outlet 251 on the exhaust duct 25. The gas monitoring module 3 is in a real-time monitoring state whether the exhaust system 2 is started or not. When the exhaust system 2 is started, when the air in the mine environment passes through the air outlet 251, the gas monitoring module 3 can better detect the air in the mine internal environment, and the analyzed data is more accurate, making the air circulation in the mine safer for the staff.

[0033] The gas monitoring module 3 is at least integrated with a dust concentration sensor, an oxygen concentration sensor, a methane concentration sensor, a carbon monoxide concentration sensor, a temperature sensor and a humidity sensor. The gas monitoring module 3 is at least integrated with but not limited to these modules. Among them, the oxygen concentration sensor can detect the oxygen concentration in the mine in real time to avoid the lack of oxygen in the mine tunnel. Cooperating with the dust concentration sensor to detect the dust content in the mine tunnel further improves the work safety of the staff in the mine. At the same time, combining the temperature sensor and the humidity sensor to detect the temperature and humidity in the mine, the mine ventilation system can adjust the temperature and humidity in the mine in real time, improving the comfort of the staff working in the mine. The harmful gas detection device integrated on the gas monitoring module 3 can monitor the concentration of harmful gases in the mine. When the concentration reaches the threshold value, the power of the exhaust system 2 is immediately turned on to the maximum, greatly improving the personal safety of the staff and the safety of the ventilation system.

[0034] Working principle of the exhaust system 2: When the exhaust system 2 operates, the exhaust fan 27 in the exhaust cavity 22 starts to operate. The air in the mine tunnel will enter the exhaust duct 25 through the air outlet 251 under the action of the exhaust fan 27. When the air reaches the exhaust filtration cavity 21 of the exhaust system 2, the exhaust filtration module 26 in the exhaust filtration cavity 21 will filter and purify the waste gas. The purified air is discharged through the main air outlet 23 on the exhaust cavity 22, completing the exhaust of the air in the mine internal environment. The air supply system 1 and the exhaust system 2 work together to complete the ventilation cycle in the mine.

[0035] Example 3

[0036] The difference from the above-mentioned Examples 1 and 2 is that according to Figure 7As shown in the figure, a mine safety ventilation and gas monitoring device. The air supply system 1 and the exhaust system 2 can also be integrated on the same air supply device. Inside the box of the air supply system 1, an air inlet chamber 10, an air supply chamber 12, and a dust removal chamber 13 are sequentially arranged. A refrigeration module 11 is also arranged on the cavity of the air supply chamber 12. A main air inlet 15 is arranged on the air inlet chamber 10, and a main air supply outlet 16 is also arranged on the air supply chamber 12. The main air inlet 15 is communicated with each chamber inside the air supply system 1 in sequence and finally communicated with the main air supply outlet 16. A air supply filtration module 14 is also arranged in the cavity of the air inlet chamber 10; inside the box of the exhaust system 2, an exhaust filtration chamber 21 and an exhaust chamber 22 are sequentially arranged. A main exhaust outlet 23 is arranged on the exhaust filtration chamber 21, and a main air outlet 24 is also arranged on the exhaust chamber 22. An exhaust pipe 25 is connected to the main exhaust outlet 23, and a gas monitoring module 3 is also installed inside the exhaust pipe 25.

[0037] The exhaust system 2 is installed at the lower part of the device of the air supply system 1. The air supply system 1 and the exhaust system 2 are integrated on the same air supply device. The air inlet positions of the main air inlet 15 of the air supply system 1 and the main air outlet 24 of the exhaust system 2 are arranged in two different directions of the air supply device, which can effectively avoid the air short circuit caused by the convection of the fresh air sent into the mine and the air discharged from the mine interior, and further improve the effect of the air circulation inside the mine.

[0038] An intelligent control unit 5 is also arranged on the air supply device integrated with the air supply system 1 and the exhaust system 2. The control logic of the intelligent control unit 5 is as follows: when the oxygen concentration sensor in the gas monitoring module 3 monitors that the oxygen concentration in the mine does not reach the preset value, the air supply path of the air supply system 1 is automatically opened, and at the same time, the speed of the air supply fan 121 is increased to the maximum; when the temperature and humidity sensor in the gas monitoring module 3 monitors that the temperature and humidity in the mine exceed the preset value, the refrigeration module 11 is automatically started to reduce the temperature and humidity of the fresh air sent into the mine; when the dust concentration sensor in the gas monitoring module 3 monitors that the dust concentration in the mine exceeds the threshold, the working intensity of the dust removal module in the dust removal chamber 13 is automatically started and adjusted; when any harmful gas concentration sensor in the gas monitoring module 3 monitors that the harmful gas concentration exceeds the standard, the exhaust path of the exhaust system 2 is automatically opened, and at the same time, the speed of the exhaust fan 27 is increased to the maximum, and the alarm device is triggered; the gas monitoring module 3 on the air supply device can monitor the air environment inside the mine in real time, transmit data such as dust concentration, oxygen concentration, temperature and humidity, and harmful gas concentration to the intelligent control unit. After some data exceed the preset threshold, the intelligent control unit 5 will automatically control the corresponding module to operate to improve the air environment inside the mine, greatly improving the safety of the air environment inside the mine.

Claims

1. A mine safety ventilation and gas monitoring device, comprising a air supply system (1) and an exhaust system (2), characterized in that, Inside the casing of the air supply system (1), an air inlet chamber (10), an air supply chamber (12), and a dust removal chamber (13) are sequentially arranged. A refrigeration module (11) is also arranged on the cavity of the air supply chamber (12); a main air inlet (15) is arranged on the air inlet chamber (10), and a main air supply outlet (16) is also arranged on the air supply chamber (12). The main air inlet (15) is communicated with each chamber inside the air supply system (1) in sequence and is finally communicated with the main air supply outlet (16). An air supply filtration module (14) is also arranged in the cavity of the air inlet chamber (10); inside the casing of the exhaust system (2), an exhaust filtration chamber (21) and an exhaust chamber (22) are sequentially arranged. A main exhaust outlet (23) is arranged on the exhaust filtration chamber (21), and a main air outlet (24) is also arranged on the exhaust chamber (22). An exhaust duct (25) is connected to the main exhaust outlet (23), and a gas monitoring module (3) is also installed inside the exhaust duct (25).

2. The mine safety ventilation and gas monitoring device according to claim 1, characterized in that, The air supply filtration module (14) in the air inlet chamber (10) is a multi-stage filtration unit, and a primary filter (141), an intermediate filter (142), and a high-efficiency filter (143) are sequentially arranged. The primary filter (141) is made of a folded coarse filter screen and is used to filter large particle dust and debris in the air; the intermediate filter (142) is made of an activated carbon filter screen and is used to adsorb odors, harmful gases, and organic pollutants in the air; The high-efficiency filter (143) is made of a HEPA filter screen and is used to filter fine dust in the air.

3. The mine safety ventilation and gas monitoring device according to claim 1, characterized in that, A dust-proof net (151) is installed at the inlet position of the main air inlet (15) on the air inlet chamber (10). A blower (121) is arranged in the air supply chamber (12). The inner diameter dimension of the cavity of the air inlet chamber (10) is larger than the inner diameter dimension of the cavity of the air supply chamber (12), which is used to increase the flow rate of the fresh air sent by the blower (121), and at the same time increase the heat exchange efficiency between the fresh air and the refrigeration module (11). The refrigeration module (11) is used to cool the fresh air in the air supply chamber (12).

4. A mine safety ventilation and gas monitoring device according to claim 3, characterized in that, The refrigeration module (11) winds a cooling pipe (111) on the outer wall of the cavity of the air supply chamber (12). The cooling pipe (111) is communicated with the evaporator (113) of the refrigeration module (11). A cooling liquid is arranged inside the cooling pipe (111). A circulation pump (112) is also arranged on the pipeline of the cooling pipe (111) for circulating the cooling liquid in the pipeline; the evaporator (113) is communicated with the condenser (116) of the refrigeration module (11) through a refrigeration pipe (114). A refrigerant is arranged inside the refrigeration pipe (114), and a compressor (115) is also arranged on the refrigeration pipe (114).

5. A mine safety ventilation and gas monitoring device according to claim 1, characterized in that, A ventilation duct (4) is also installed on the main air supply opening (16) of the air supply chamber (12). The ventilation duct (4) is a segmented detachable installation structure. Each section of the ventilation duct (4) includes a duct body (41) and mounting flanges (42) at both ends. The mounting flanges (42) are provided with a number of mounting holes (43). Each section of the ventilation duct (4) is locked and fixed by screws through the mounting flanges (42) to form the complete ventilation duct (4). A duct air opening (44) is also opened on the duct body (41) of the ventilation duct (4).

6. The mine safety ventilation and gas monitoring device according to claim 5, characterized in that, A dust removal module is arranged in the dust removal chamber (13), including a booster pump (131). The input end of the booster pump (131) is connected to a water tank (132) arranged outside the air supply system (1). The output end of the booster pump (131) is connected to a dust removal duct (133). The dust removal duct (133) is arranged inside the ventilation duct (4) and is arranged along the pipeline of the ventilation duct (4). An atomizing nozzle (134) is also installed at the position of each duct air opening (44) of the dust removal duct (133).

7. A mine safety ventilation and gas monitoring device according to claim 1, characterized in that, An exhaust air filtration module (26) is arranged in the exhaust air filtration chamber (21) of the exhaust air system (2). The exhaust air filtration module (26) is a multi-stage filtration unit, successively provided with a dust removal filtration layer (261), an adsorption filtration layer (262) and a super-clean filtration layer (263). The dust removal filtration layer (261) is made of synthetic fiber non-woven fabric filter screen and is used for filtering large-particle-size and medium-particle-size dust in the air. The adsorption filtration layer (262) is made of activated carbon filter screen and is used for purifying harmful gases in the mine environment. The super-clean filtration layer (263) is made of HEPA filter screen and is used for intercepting free inorganic substances and microbial particles in mine dust. An exhaust fan (27) is also arranged in the exhaust air chamber (22). The exhaust fan (27) can discharge the air in the mine after passing through the exhaust air filtration module (26).

8. The mine safety ventilation and gas monitoring device according to claim 1, characterized in that, The exhaust duct (25) is a segmented assembly structure. Each section of the exhaust duct (25) is locked and connected by screws. An exhaust air opening (251) is also opened on the segmented exhaust duct (25) that needs to exhaust air. A gas monitoring module (3) is arranged on the exhaust air opening (251) of the exhaust duct (25) for monitoring the air quality in the mine.

9. The mine safety ventilation and gas monitoring device according to claim 1, characterized in that, At least a dust concentration sensor, an oxygen concentration sensor, a methane concentration sensor, a carbon monoxide concentration sensor, a temperature sensor and a humidity sensor are integrated on the gas monitoring module (3).

10. A mine safety ventilation and gas monitoring device according to any one of claims 1-9, characterized in that, It further includes an intelligent control unit (5), and the control logic of the intelligent control unit (5) is as follows: when the oxygen concentration sensor in the gas monitoring module (3) monitors that the oxygen concentration in the mine does not reach the preset value, the air supply passage of the air supply system (1) is automatically opened, and at the same time, the rotation speed of the air blower (121) is increased to the maximum; when the temperature and humidity sensor in the gas monitoring module (3) monitors that the temperature and humidity in the mine exceed the preset value, the refrigeration module (11) is automatically started to reduce the temperature and humidity of the fresh air sent into the mine; when the dust concentration sensor in the gas monitoring module (3) monitors that the dust concentration in the mine exceeds the threshold, the working intensity of the dust reduction module in the dust reduction chamber (13) is automatically started and adjusted; when any harmful gas concentration sensor in the gas monitoring module (3) monitors that the harmful gas concentration exceeds the standard, the exhaust passage of the exhaust system (2) is automatically opened, and at the same time, the rotation speed of the exhaust fan (27) is increased to the maximum, and the alarm device is triggered.

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