Mine safety ventilation device

Abstract

The utility model relates to the field of mine ventilation equipment, and discloses a mine safety ventilation device which comprises a supporting sleeve. The ventilator is arranged in the supporting sleeve; the pressure sensor is installed on the supporting sleeve, the pressure sensor is arranged below the ventilator, and a shell of the ventilator is connected with the pressure sensor; and the alarm is mounted on the supporting sleeve, and the alarm is connected with the pressure sensor. According to the utility model, the pressure sensor is arranged below the ventilator, so that the weight change of the ventilator caused by dust attachment is monitored in real time; and meanwhile, a displacement sensor in the ventilator is used for monitoring the displacement state of the movable sleeve caused by dust accumulation and weight increase on the filter screen, and the dust amount in the ventilator is accurately reflected, so that a worker can know the dust accumulation condition in the ventilator in time, and a dust removal measure is taken at a proper time.

Description

Technical Field

[0001] This utility model relates to the field of mine ventilation equipment, and in particular to a mine safety ventilation device. Background Technology

[0002] In mining operations, mine safety ventilation systems play a crucial role. They are responsible for continuously supplying fresh air to the underground working environment while expelling harmful gases, dust, and fumes generated underground. They are key equipment for ensuring safe production in mines and protecting the health of underground workers.

[0003] In poorly ventilated areas such as dead-end roadways, blind roadways, and near goaf areas, local ventilation fans can be installed to deliver fresh air to designated areas. As the core component of the ventilation system, the fan generates power through the rotation of its blades, driving airflow within the system. Ventilation ducts guide airflow to various work areas. During continuous use, due to the harsh underground environment and the presence of large amounts of dust and particulate matter in the air, the inner walls, filters, and blades of the fan accumulate significant dust. Over time, the overall weight of the fan also changes.

[0004] Existing mine safety ventilation devices cannot monitor the amount of dust inside the fans, making it impossible for workers to understand the dust accumulation inside the fans in a timely manner and to take effective dust removal measures at the appropriate time. This not only increases the difficulty and cost of equipment maintenance, but may also threaten the lives of underground workers due to poor ventilation. Utility Model Content

[0005] To solve the problems mentioned above, this utility model is implemented through the following technical solution.

[0006] A mine safety ventilation device includes: a support sleeve; a ventilator disposed inside the support sleeve; a pressure sensor installed on the support sleeve, the pressure sensor being disposed below the ventilator, the housing of the ventilator being connected to the pressure sensor; and an alarm installed on the support sleeve, the alarm being connected to the pressure sensor.

[0007] Preferably, the ventilator includes: a movable sleeve installed inside the ventilator; and a filter screen installed on the inner ring of the movable sleeve.

[0008] Preferably, the ventilator further includes a displacement sensor installed inside the ventilator, the displacement sensor being used to monitor the displacement state of the movable sleeve.

[0009] Preferably, the ventilator further includes: a movable slot formed on the inner wall of the ventilator, wherein the displacement sensor is installed on the inner wall of the movable slot; a movable block installed in the movable slot, wherein the movable sleeve is connected to the movable block.

[0010] Preferably, the support sleeve includes: a fixed seat, installed on the support sleeve, the fixed seat being disposed below the ventilator; a detection seat, installed inside the fixed seat, one end of the detection seat penetrating the support sleeve and connected to the ventilator, the pressure sensor being disposed inside the fixed seat, and the other end of the detection seat being connected to the pressure sensor.

[0011] Preferably, the support sleeve further includes a controller, which is installed in the fixed base, and the alarm is connected to the pressure sensor through the controller.

[0012] Preferably, the support sleeve further includes: a plurality of shock absorbers, which are installed on the inner wall of the support sleeve in a circumferential array, and the shock absorbers are disposed between the ventilator and the support sleeve.

[0013] Preferably, the fixing seat has a fixing groove, and the detection seat is connected in the fixing groove.

[0014] This utility model provides a mine safety ventilation device. Compared with the prior art, it has the following advantages: By installing a pressure sensor below the ventilation fan, the weight change of the ventilation fan due to dust accumulation can be monitored in real time; at the same time, the displacement sensor inside the ventilation fan can be used to monitor the displacement of the moving sleeve caused by dust accumulation and weight increase on the filter screen, accurately reflecting the amount of dust inside the ventilation fan. When the pressure sensor detects that the weight change of the ventilation fan exceeds a preset threshold, or when the displacement sensor detects that the displacement change reaches a certain level, the controller will trigger an alarm, allowing the staff to understand the dust accumulation inside the fan in a timely manner and take dust removal measures at the appropriate time, avoiding equipment failure due to excessive dust accumulation, and reducing the difficulty and cost of equipment maintenance. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram from another perspective of the present invention.

[0017] Figure 3 This is a cross-sectional schematic diagram of the ventilator and movable sleeve proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the cross-section of the support sleeve proposed in this utility model.

[0019] Figure 5This is a schematic diagram of the cross-section of the fixed base proposed in this utility model.

[0020] The attached figures are labeled as follows:

[0021] 100. Support sleeve; 101. Shock absorber;

[0022] 200. Ventilation fan; 201. Moving trough; 202. Moving block; 203. Displacement sensor;

[0023] 300. Movable sleeve; 301. Filter screen;

[0024] 400. Mounting base; 401. Detection base; 402. Pressure sensor; 403. Controller; 404. Alarm. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0027] Reference Figures 1-5 A mine safety ventilation device includes: a support sleeve 100; a ventilation fan 200 disposed inside the support sleeve 100; a pressure sensor 402 installed on the support sleeve 100, the pressure sensor 402 being disposed below the ventilation fan 200, the housing of the ventilation fan 200 being connected to the pressure sensor 402; and an alarm 404 installed on the support sleeve 100, the alarm 404 being connected to the pressure sensor 402.

[0028] In this embodiment, a fixing seat 400 is installed at the bottom of the support sleeve 100. The fixing seat 400 has a sturdy block structure and is made of high-strength metal material, such as Q345 steel, which has good pressure resistance and deformation resistance. The pressure sensor 402 is installed inside the support sleeve 100. Through a high-precision pressure sensing element, it monitors the pressure changes transmitted from the ventilator 200 in real time and monitors the weight changes of the ventilator 200. When there is a lot of dust and impurities attached to the ventilator 200, the weight will change accordingly. The pressure sensor 402 can monitor this change. When the pressure sensor 402 detects that the weight change of the ventilator 200 exceeds a preset threshold, it transmits the signal to the controller 403. After analysis and processing, the controller 403 triggers the alarm 404 to issue an alarm signal, reminding the staff to clean the ventilator 200 in time.

[0029] The ventilator 200 includes: a movable sleeve 300 installed inside the ventilator 200; a filter screen 301 installed on the inner ring of the movable sleeve 300; a displacement sensor 203 installed inside the ventilator 200, the displacement sensor 203 being used to monitor the displacement state of the movable sleeve 300; a movable groove 201 formed on the inner wall of the ventilator, the displacement sensor 203 being installed on the inner wall of the movable groove 201; and a movable block 202 installed inside the movable groove 201, the movable sleeve 300 being connected to the movable block 202.

[0030] The ventilator 200 is the core component of the entire ventilation system, responsible for generating a powerful airflow to achieve ventilation and air exchange in the mine. Inside the ventilator 200 is a movable sleeve 300, a cylindrical structure made of lightweight and high-strength aluminum alloy, possessing excellent corrosion resistance and mechanical strength. The inner ring of the movable sleeve 300 is fitted with a filter screen 301, made of stainless steel using a fine weaving process, achieving high filtration accuracy and effectively intercepting dust and particulate matter in the air.

[0031] Inside the ventilator 200, a displacement sensor 203 is also installed. The displacement sensor 203 uses a high-precision linear displacement sensor, such as the Omron E2E-X series. When the ventilator 200 is running, as dust continuously adheres to the filter 301, the weight of the filter 301 increases, and the ventilation effect of the filter 301 deteriorates. Driven by the air pressure, the movable sleeve 300 moves, and the movable block 202 moves synchronously within the movable groove 201. The displacement sensor 203 monitors the displacement state of the movable block 202 in real time. By detecting the change in displacement, it indirectly reflects the amount of dust accumulated on the filter 301. When the displacement change reaches a certain level, it indicates that a significant amount of dust has accumulated on the filter 301, requiring cleaning.

[0032] The support sleeve 100 includes: a fixed base 400, installed on the support sleeve 100, the fixed base 400 being positioned below the ventilator 200; a detection base 401, installed inside the fixed base 400, one end of the detection base 401 penetrating the support sleeve 100 and connected to the ventilator 200, a pressure sensor 402 being positioned inside the fixed base 400, the other end of the detection base 401 being connected to the pressure sensor 402; a controller 403, installed inside the fixed base 400, an alarm 404 being connected to the pressure sensor 402 via the controller 403; and several shock absorbers 101, installed on the inner wall of the support sleeve 100 in a circular array, the shock absorbers 101 being positioned between the ventilator 200 and the support sleeve 100; a fixing groove is provided on the fixed base 400, and the detection base 401 is connected within the fixing groove.

[0033] The aforementioned controller 403 employs an industrial-grade programmable logic controller (PLC), such as the Siemens S7-200 series. The shock absorber 101 utilizes a spring and rubber composite structure, with one end connected to the inner wall of the support sleeve 100 and secured by pre-embedded bolts or welded connectors; the other end contacts the outer casing of the ventilation fan 200, providing effective vibration damping between the ventilation fan 200 and the support sleeve 100. When the ventilation fan 200 vibrates during operation, the shock absorber 101 effectively absorbs and disperses vibration energy, reducing the impact of vibration on the support sleeve 100 and the entire ventilation system, ensuring stable operation of the ventilation system.

[0034] During operation, the ventilator 200, as a core component, is activated, generating a powerful airflow to perform ventilation and air exchange in the mine, supplying fresh air and expelling harmful gases and dust. The pressure sensor 402, located within the bottom mounting base 400 of the support sleeve 100, is connected to the ventilator 200's outer casing via a detection base 401. Its high-precision pressure sensing element monitors the pressure transmitted by the ventilator 200 in real time. As mining operations continue, dust and impurities accumulate on the inner wall of the ventilator 200, the filter 301, and the fan blades, causing an increase in the ventilator 200's weight. The pressure sensor 402 detects this pressure change and converts it into data representing the weight change of the ventilator 200.

[0035] The inner ring filter 301 of the movable sleeve 300 inside the ventilator 200 intercepts dust and particulate matter in the air. As dust continuously accumulates, the weight of the filter 301 increases and the ventilation effect deteriorates. Under the action of wind pressure, the movable sleeve 300 drives the movable block 202 to move within the movable groove 201. The displacement sensor 203 monitors the displacement state of the movable block 202 in real time, and detects the amount of displacement change to indirectly reflect the amount of dust accumulation on the filter 301. The pressure sensor 402 transmits the weight change data of the ventilator 200 to the controller 403 inside the fixed base 400, and the displacement sensor 203 also transmits the displacement change data related to the amount of dust accumulation on the filter 301 to the controller 403. The controller 403 uses an industrial-grade programmable logic controller 403 (PLC), such as the Siemens S7-200 series, to analyze and process this data.

[0036] When the controller 403 determines that the weight change of the fan 200 transmitted by the pressure sensor 402 exceeds a preset threshold, or the displacement change transmitted by the displacement sensor 203 reaches a certain level, indicating that a large amount of dust has accumulated inside the fan 200, the controller 403 triggers the alarm 404 to issue an alarm signal. Upon receiving the alarm, personnel promptly clean the fan 200 to ensure its normal operation and the stability and reliability of the ventilation system. During the operation of the fan 200, the shock absorber 101 plays a crucial role. The shock absorber 101 adopts a spring and rubber composite structure, distributed in a circumferential array between the inner wall of the support sleeve 100 and the outer shell of the fan 200, and is fixed by pre-embedded bolts or welded connectors. It effectively absorbs and disperses the vibration energy generated by the operation of the fan 200, reducing the impact of vibration on the support sleeve 100 and the entire ventilation device, and maintaining the stable operation of the ventilation device.

[0037] In summary, compared with existing technologies, it has the following beneficial effects:

[0038] By installing a pressure sensor 402 below the ventilator 200, the weight change of the ventilator 200 due to dust adhesion can be monitored in real time; at the same time, the displacement sensor 203 inside the ventilator 200 can be used to monitor the displacement state of the moving sleeve 300 caused by dust accumulation and weight increase on the filter screen 301, so as to accurately reflect the amount of dust in the fan.

[0039] When the pressure sensor 402 detects that the weight change of the fan 200 exceeds the preset threshold, or the displacement sensor 203 detects that the displacement change reaches a certain level, the controller 403 will trigger the alarm 404 to issue an alarm, so that the staff can understand the dust accumulation inside the fan in a timely manner and take dust removal measures at the appropriate time to avoid equipment failure due to excessive dust accumulation, thereby reducing the difficulty and cost of equipment maintenance.

[0040] By timely monitoring and cleaning of dust inside the fan, the ventilation fan 200 is ensured to maintain good ventilation at all times, stably supplying fresh air to the mine, effectively preventing the accumulation of harmful gases due to poor ventilation, reducing safety hazards, and providing strong protection for safe production in the mine.

[0041] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A mine safety ventilation device, characterized in that, include: Support sleeve (100); A ventilation fan (200) is disposed within the support sleeve (100); A pressure sensor (402) is mounted on the support sleeve (100). The pressure sensor (402) is located below the ventilator (200). The housing of the ventilator (200) is connected to the pressure sensor (402). An alarm (404) is mounted on the support sleeve (100) and is connected to a pressure sensor (402).

2. A mine safety ventilation device according to claim 1, characterized in that, The ventilator (200) includes: A movable sleeve (300) is installed inside the ventilator (200); A filter (301) is installed on the inner ring of the movable sleeve (300).

3. A mine safety ventilation device according to claim 2, characterized in that, The ventilator (200) also includes: A displacement sensor (203) is installed inside the ventilator (200) and is used to monitor the displacement state of the movable sleeve (300).

4. A mine safety ventilation device according to claim 3, characterized in that, The ventilator (200) also includes: A movable channel (201) is formed on the inner wall of the fan, and the displacement sensor (203) is installed on the inner wall of the movable channel (201); The movable block (202) is installed in the movable slot (201), and the movable sleeve (300) is connected to the movable block (202).

5. A mine safety ventilation device according to claim 1, characterized in that, The support sleeve (100) includes: A fixing seat (400) is installed on the support sleeve (100), and the fixing seat (400) is located below the ventilator (200); The detection seat (401) is installed inside the fixed seat (400). One end of the detection seat (401) passes through the support sleeve (100) and is connected to the ventilator (200). The pressure sensor (402) is installed inside the fixed seat (400). The other end of the detection seat (401) is connected to the pressure sensor (402).

6. A mine safety ventilation device according to claim 5, characterized in that, The support sleeve (100) also includes: The controller (403) is installed in the mounting base (400), and the alarm (404) is connected to the pressure sensor (402) through the controller (403).

7. A mine safety ventilation device according to claim 1, characterized in that, The support sleeve (100) also includes: There are several shock absorbers (101). Several shock absorbers (101) are installed on the inner wall of the support sleeve (100) and distributed in a circular array. The shock absorbers (101) are located between the ventilator (200) and the support sleeve (100).

8. A mine safety ventilation device according to claim 5, characterized in that, The fixing seat (400) has a fixing groove, and the detection seat (401) is connected in the fixing groove.

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