Circulating ventilation device for strip mine field

Abstract

The invention provides an open-pit mine field circulating ventilation device. The open-pit mine field circulating ventilation device comprises an air guide air duct; the lower part of the air guide cavity is communicated with mine field air, and the upper part of the air guide cavity is communicated with external atmosphere; an air guide fan; a temperature control assembly; at least one air detector; the intelligent controller is electrically connected with the air detector, the air guide fan and the temperature control assembly to control the air detector, the air guide fan and the temperature control assembly to work; the temperature control assembly heats airflow in the air guide cavity, so that pressure difference is formed between the air guide cavity and the external atmosphere, and the airflow in the air guide cavity enters from the lower portion of the air guide cavity and flows out from the upper portion of the air guide cavity to the external atmosphere so as to disturb and disperse a thermal inversion layer of the strip mine field. According to the invention, air flow with certain air speed and temperature enters from the lower part of the air guide air duct and rushes to the external atmosphere from the upper part of the air guide air duct, so that circularly flowing air flow is formed in space, the atmosphere above the mine field is circularly disturbed, and a thermal inversion layer above the strip mine field can be disturbed and dispersed.

Description

Technical Field

[0001] The invention relates to the technical field of mining ventilation equipment, and in particular to a circulating ventilation device for an open-pit mine. Background Art

[0002] So far, in the production of open-pit mines at home and abroad, deep open-pit mines are affected by blasting vibrations and mining and transportation work, which will produce a large amount of dust, blasting smoke and other harmful gases, and the air pollution is extremely serious. In the season with relatively low temperature, due to the spontaneous combustion of coal seams, the operation of coal mining and transportation facilities, and the poor air flow, the surrounding dust and other pollutants are all gathered in the pit, which is easy to produce a local small inversion layer, forming a thick cover layer covering the open-pit mine. At the same time, due to the continuous generation of various pollutants in the mine pit, more and more pollutants accumulate, and finally develop into serious air pollution in the open-pit mine, resulting in extremely poor air visibility in the open-pit mine. In severe cases, the visibility is only tens of meters away, which is very easy to cause serious production safety accidents. In addition, the pollutants floating in the atmosphere form an aerosol state, with loose particles and light weight. The conventional use of water spraying to reduce dust is not only ineffective, but will aggravate the haze process, thereby causing serious harm to production safety and the health of on-site workers.

[0003] In response to the above situation, existing open-pit mines usually rely on natural ventilation to evacuate the polluted particles concentrated in the mines. However, since the comprehensive ventilation and dust removal work in open-pit mines is affected by many factors, there is no effective ventilation method and ventilation facilities to adapt to the ventilation needs of open-pit mines. For example, axial flow ventilation fan equipment is currently widely used. In actual use, it is found that a single axial flow ventilation fan cannot be linked with the changes in wind direction and speed in the wind field where the open-pit mine is located, and thus cannot effectively eliminate the inversion layer above the mine. It can only achieve air disturbance in the inversion layer, and cannot achieve green ventilation operation in the mine.

[0004] In summary, the existing molding ventilation equipment cannot effectively carry out scientific and reasonable ventilation for the pollutant generation conditions in open-pit mines, cannot achieve comprehensive ventilation management of the inversion layer formed on the upper part of the open-pit mine, and thus cannot effectively improve the atmospheric environment of the open-pit mine, and cannot meet the safe and efficient production needs of the open-pit mine. Summary of the invention

[0005] The invention provides an open-pit mine circulating ventilation device to solve the problem that the ventilation equipment in the prior art cannot scientifically and reasonably ventilate the open-pit mine and cannot control the inversion layer formed on the upper part of the open-pit mine.

[0006] In order to solve the above problems, the present invention provides a circulating ventilation device for an open-pit mine, comprising: an air guide duct, which is arranged vertically; an air guide cavity is provided inside the air guide duct, the lower part of the air guide cavity is connected to the mine air, and the upper part is connected to the external atmosphere, and the lower diameter of the air guide cavity is not less than the upper diameter of the air guide cavity; an air guide fan is arranged in the air guide cavity and is used to drive the air flow to flow in a directional manner; a temperature control component is arranged in the air guide cavity and is used to adjust the temperature of the air flow in the air guide cavity; at least one air detector is arranged on the air guide duct and is located at the upper part of the air guide cavity, and is used to detect the air parameters in the upper part of the air guide cavity; an intelligent controller is electrically connected to the air detector, the air guide fan and the temperature control component to control the operation thereof; wherein the temperature control component heats the air flow in the air guide cavity so that a pressure difference is formed between the air guide cavity and the external atmosphere, and the air flow in the air guide cavity enters from the lower part of the air guide cavity and flows out from the upper part of the air guide cavity to the external atmosphere, so as to disturb and disperse the inversion layer of the open-pit mine.

[0007] Furthermore, the open-pit mine circulating ventilation device also includes an installation adjustment frame, and the air guide duct is fixedly arranged on the installation adjustment frame; the installation adjustment frame is arbitrarily arranged on the ground to drive the air guide duct to rise and fall, so as to adjust the air intake height of the lower part of the air guide cavity and the air outlet height of the upper part of the air guide cavity.

[0008] Furthermore, the size of the lower portion of the air guide cavity is adjustable to adjust the air inlet cross-sectional area; and / or, the size of the upper portion of the air guide cavity is adjustable to adjust the air outlet cross-sectional area.

[0009] Furthermore, the open-pit mine circulating ventilation device also includes a mounting bracket, both ends of which are respectively fixedly arranged in the air guide cavity; the mounting bracket is a hollow bracket to allow air flow to pass through; the air guide fan is arranged on the mounting bracket, and the rotation axis of the fan blades of the air guide fan is arranged colinearly with the central axis of the air guide cavity.

[0010] Furthermore, the temperature control component is mounted on the mounting bracket and / or the inner wall of the air guide cavity, and at least a portion of the temperature control component is located above the air guide fan.

[0011] Furthermore, the vertical distance between the lower part of the air guide cavity and the ground is not less than 1.8 meters; the air guide fan is an axial flow fan, and the air outlet of the axial flow fan faces directly upward; the air guide fan drives the air flow in the air guide cavity to rise; and the air guide duct is made of synthetic fiber material.

[0012] Furthermore, the open-pit mine circulating ventilation device also includes a battery, which is electrically connected to at least the intelligent controller and the air detector for providing electrical energy; and / or, the open-pit mine circulating ventilation device also includes a filter screen, which is arranged at the lower part of the air guide cavity for filtering the air entering the air guide cavity.

[0013] Furthermore, the open-pit mine circulating ventilation device also includes a solar panel and / or a wind generator, and the solar panel and / or the wind generator are connected to a storage battery.

[0014] Furthermore, the intelligent controller includes a data processing module, a control module and a communication module; the data processing module adopts a programmable embedded processor, the communication module includes wireless communication mode and wired communication mode, and the wireless communication mode includes at least one of Wi-Fi, Bluetooth and 4G / 5G networks; the air detector includes a temperature sensor, a humidity sensor, a wind speed sensor and an air quality sensor; the temperature control component includes multiple electric heating elements.

[0015] Furthermore, the shape of the air guide cavity can be cylindrical; or, the shape of the air guide cavity can be truncated cone or hourglass, and the horizontal cross-sectional dimension of the air guide cavity uniformly increases or decreases in the vertical direction; and / or, the air guide duct is an integrated structure or a segmented structure.

[0016] The technical solution of the present invention is applied, and the present invention provides a circulating ventilation device for an open-pit mine, comprising: an air guide duct, which is arranged vertically; an air guide cavity is provided inside the air guide duct, the lower part of the air guide cavity is connected to the mine air, and the upper part is connected to the external atmosphere, and the lower diameter of the air guide cavity is not less than the upper diameter of the air guide cavity; an air guide fan is arranged in the air guide cavity, and is used to drive the air flow to flow in a directional manner; a temperature control component is arranged in the air guide cavity, and is used to adjust the temperature of the air flow in the air guide cavity; at least one air detector, at least one air detector is arranged on the air guide duct, and is located at the upper part of the air guide cavity, and is used to detect the air parameters in the upper part of the air guide cavity; an intelligent controller is electrically connected to the air detector, the air guide fan and the temperature control component to control the operation thereof; wherein the temperature control component heats the air flow in the air guide cavity, so that a pressure difference is formed between the air guide cavity and the external atmosphere, and the air flow in the air guide cavity enters from the lower part of the air guide cavity, and flows out from the upper part of the air guide cavity to the external atmosphere, so as to disturb and disperse the inversion layer of the open-pit mine.

[0017] The present invention cooperates with an air guide duct, an air guide fan and a temperature control component to realize that air with a certain wind speed and temperature enters from the lower part of the air guide duct and rushes to the external atmosphere from the upper part of the air guide duct, thereby forming a circulating airflow in space, realizing a circulating disturbance of the atmosphere above the mine, and further disturbing and dispersing the inversion layer above the open-pit mine; the present invention studies the formation and dissipation mechanism of the inversion layer, utilizes the airflow flowing from bottom to top, effectively reduces the temperature of the ground in the mine, increases the turbulence of the atmospheric movement, promotes the vertical transfer of heat, reduces the temperature gradient between the surface of the mine and the atmosphere above, and further helps to eliminate the inversion layer; by arranging an air detector and an intelligent control The present invention can be linked with the change of wind direction and wind speed in the wind field where the open-pit mine is located, thereby effectively eliminating the inversion layer above the mine, not only realizing the air disturbance in the inversion layer, but also disturbing the air above and below the inversion layer, thereby realizing the green ventilation operation of the mine; the present invention has a simple structure and reliable operation, and can effectively carry out scientific and reasonable ventilation and evacuation for the pollutant generation conditions of the open-pit mine, not only realizing the ventilation management of the inversion layer formed on the upper part of the open-pit mine, but also efficiently improving the atmospheric environment of the open-pit mine, reducing pollution in the mine, and improving visibility, effectively ensuring the safety of the staff, thereby realizing safe and efficient production of the open-pit mine. The present invention is low-cost and easy to assemble and maintain, and is suitable for large-scale promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A partial structural schematic diagram of an open-pit mine circulating ventilation device provided by an embodiment of the present invention is shown;

[0020] Figure 2 A schematic diagram of a part of the structure of an open-pit mine circulation ventilation device provided by an embodiment of the present invention in a top view is shown;

[0021] Figure 3 A partial structural schematic diagram of an open-pit mine circulating ventilation device provided by an embodiment of the present invention is shown in a side view.

[0022] The above drawings include the following reference numerals:

[0023] 10. Air guide duct; 11. Air guide cavity;

[0024] 20. Air guide fan;

[0025] 30. Temperature control component;

[0026] 40. Air detector;

[0027] 50. Install the adjustment frame;

[0028] 60. Install the bracket. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 3 As shown, an embodiment of the present invention provides a circulating ventilation device for an open-pit mine, comprising: an air guide duct 10, which is vertically arranged; an air guide cavity 11 is provided inside the air guide duct 10, the lower part of the air guide cavity 11 is connected to the mine air, and the upper part is connected to the external atmosphere, and the lower diameter of the air guide cavity 11 is not less than the upper diameter of the air guide cavity 11; an air guide fan 20, which is arranged in the air guide cavity 11 and is used to drive the air flow to flow in a directional manner; a temperature control component 30, which is arranged in the air guide cavity 11 and is used to adjust the temperature of the air flow in the air guide cavity 11; at least one air detector 40, At least one air detector 40 is arranged on the air duct 10 and is located at the upper part of the air duct cavity 11, and is used to detect the air parameters in the upper part of the air duct cavity 11; the intelligent controller is electrically connected to the air detector 40, the air duct fan 20 and the temperature control component 30 to control their operation; wherein the temperature control component 30 heats the air flow in the air duct cavity 11 so that a pressure difference is formed between the air duct cavity 11 and the external atmosphere, and the air flow in the air duct cavity 11 enters from the lower part of the air duct cavity 11 and flows out from the upper part of the air duct cavity 11 to the external atmosphere, so as to disturb and disperse the inversion layer of the open-pit mine.

[0031] The present invention cooperates with an air guide duct 10, an air guide fan 20 and a temperature control component 30 to realize that an air flow with a certain wind speed and temperature enters from the lower part of the air guide duct 10, and rushes to the external atmosphere from the upper part of the air guide duct 10, thereby forming a circulating airflow in space, realizing a circulating disturbance of the atmosphere above the mine, and further disturbing and dispersing the inversion layer above the open-pit mine; the present invention studies the formation and dissipation mechanism of the inversion layer, utilizes the airflow flowing from bottom to top, effectively reduces the temperature of the ground in the mine, increases the turbulence of the atmospheric movement, promotes the vertical transfer of heat, reduces the temperature gradient between the surface of the mine and the atmosphere above, and further helps to eliminate the inversion layer; by arranging an air detector 40 and intelligent controller, the present invention can be linked with the change of wind direction and wind speed in the wind field where the open-pit mine is located, thereby effectively realizing the elimination of the inversion layer above the mine, not only realizing the air disturbance in the inversion layer, but also disturbing the air above and below the inversion layer, thereby realizing the green ventilation operation of the mine; the present invention has a simple structure and reliable operation, and can effectively carry out scientific and reasonable ventilation and evacuation for the pollutant generation conditions of the open-pit mine, not only realizing the ventilation management of the inversion layer formed on the upper part of the open-pit mine, but also effectively improving the atmospheric environment of the open-pit mine, reducing pollution in the mine, and improving visibility, effectively ensuring the safety of the staff, thereby realizing safe and efficient production of the open-pit mine. The present invention is low-cost and easy to assemble and maintain, and is suitable for large-scale promotion and use.

[0032] In addition, the open-pit mine circulating ventilation device provided by the present invention can be used in deep open-pit mines. The air guide fan 20 discharges the polluted air in the open-pit mine to the outside of the mine through the air guide duct 10, stirs the air flow above the open-pit coal mine, and plays a certain role in purifying the haze above the open-pit coal mine, thereby improving the air quality and visibility in the mine, achieving the purpose of effectively improving the atmospheric environment of the open-pit mine production site, and meeting the requirements for safe and efficient production of open-pit mines.

[0033] It is worth noting that the inversion layer referred to in the present invention refers to a layer in the atmosphere where the temperature increases with increasing altitude; above the open-pit mine, the large amount of dust and harmful gases generated during the crushing, transportation and stacking of ore leads to the formation of the inversion layer; the formation of the inversion layer is mainly related to the topography, meteorological conditions and human activities. The following is a detailed description of the main reasons for the formation of the inversion layer and its formation process: 1. Topographic factors: open-pit mines are usually located in valleys or low-lying areas, and the topographic features of these areas contribute to the formation of the inversion layer; the temperature of the ground and surrounding objects decreases, causing the air temperature to drop; due to the high density of cold air, it will sink along the terrain to form a stable air layer. This cold air layer forms an inversion layer with a higher temperature near the ground; 2. Meteorological conditions: The formation of the inversion layer is also affected by meteorological conditions; for example, on a clear night, the ground radiation cooling effect is strong, which easily leads to the formation of an inversion layer. In addition, under conditions of low wind speed and high humidity, the inversion layer is more likely to form; 3. Human activities: Human activities in mining sites may also lead to the formation of an inversion layer; for example, pollutants such as industrial waste gas, heat emissions and dust generated during the mining process may affect the stability of the atmosphere, thereby promoting the formation of an inversion layer.

[0034] Usually the process of inversion layer formation is as follows: 1. Ground radiation cooling: The temperature of the ground and surrounding objects decreases, causing the air temperature to drop; this cooling effect increases the air density near the ground, forming cold air; 2. Cold air sinks: Due to the high density of cold air, it will sink along the terrain to form a stable air layer; this cold air layer forms a higher temperature inversion layer near the ground; 3. Inversion layer formation: As the cold air sinks, the air temperature near the ground gradually rises, forming an inversion layer. The thickness and strength of the inversion layer are affected by many factors such as terrain, meteorological conditions and human activities; 4. Maintenance of the inversion layer: Under appropriate meteorological conditions, the inversion layer can last for a period of time; however, as the ground temperature rises or the air circulates up and down, the inversion layer will gradually weaken until it disappears.

[0035] In a specific embodiment of the present invention, a spiral groove for generating eddy current and reducing eddy current loss is provided on the inner wall of the air guide cavity 11. The spiral groove can stabilize and accelerate the wind flow and guide the wind flow to spiral upward.

[0036] like Figure 1 and Figure 3 As shown, the open-pit mine circulating ventilation device also includes a mounting adjustment frame 50, and the air guide duct 10 is fixedly arranged on the mounting adjustment frame 50; the mounting adjustment frame 50 is arranged on the ground in a liftable manner, and is used to drive the air guide duct 10 to rise and fall, so as to adjust the air intake height of the lower part of the air guide cavity 11 and the air outlet height of the upper part of the air guide cavity 11.

[0037] By providing the mounting adjustment frame 50, reliable adjustment of the air intake height of the lower part of the air guide cavity 11 and the air outlet height of the upper part of the air guide cavity 11 is achieved, thereby improving the applicable range of inversion layers of different heights.

[0038] In a specific embodiment of the present invention, the mounting and adjusting frame 50 is driven to rise and fall by hydraulic or pneumatic means.

[0039] Specifically, the size of the lower portion of the air guiding cavity 11 is adjustable to adjust the air inlet cross-sectional area; and / or, the size of the upper portion of the air guiding cavity 11 is adjustable to adjust the air outlet cross-sectional area.

[0040] By adjusting the air inlet cross-sectional area and the air outlet cross-sectional area, effective adjustment of parameters such as wind speed and pressure in the air guide cavity 11 is ensured.

[0041] like Figure 1 and Figure 2 As shown, the open-pit mine circulation ventilation device also includes a mounting bracket 60, and both ends of the mounting bracket 60 are respectively fixedly arranged in the wind guide cavity 11; the mounting bracket 60 is a hollow bracket to allow air flow to pass through; the wind guide fan 20 is arranged on the mounting bracket 60, and the rotation axis of the fan blades of the wind guide fan 20 is arranged colinearly with the central axis of the wind guide cavity 11.

[0042] By setting the mounting bracket 60 as a hollow bracket, smooth flow of airflow is ensured; by setting the rotation axis of the fan blades of the air-guiding fan 20 to be colinear with the central axis of the air-guiding cavity 11, the airflow driven by the air-guiding fan 20 can flow more smoothly in the air-guiding cavity 11, reducing the probability of turbulence caused by the airflow blowing toward the inner wall.

[0043] Specifically, the temperature control assembly 30 is mounted on the mounting bracket 60 and / or the inner wall of the air guide cavity 11 , and at least a portion of the temperature control assembly 30 is located above the air guide fan 20 .

[0044] By arranging at least a portion of the temperature control component 30 to be located above the air guide fan 20, the convection heat exchange effect is ensured, thereby ensuring that the temperature control component 30 can reliably adjust the airflow temperature.

[0045] Specifically, the vertical distance between the lower part of the air guide cavity 11 and the ground is not less than 1.8 meters; the air guide fan 20 is an axial flow fan, and the air outlet of the axial flow fan faces directly upward; the air guide fan 20 drives the air flow in the air guide cavity 11 to rise; the air guide cylinder 10 is made of synthetic fiber material.

[0046] By setting the vertical distance between the lower part of the air guide cavity 11 and the ground to be not less than 1.8 meters, the air guide duct 10 is guaranteed to reliably absorb pollutants such as ground dust, thereby effectively improving the pollution in the open-pit mine, improving visibility, effectively ensuring the safety of the staff, and realizing safe and efficient production in the open-pit mine.

[0047] In a specific embodiment of the present invention, the axial flow fan is an explosion-proof axial flow fan for mining, and the height of the air inlet of the axial flow fan from the ground is greater than 1.8 meters.

[0048] Optionally, the open-pit mine circulating ventilation device further includes a battery, which is electrically connected to at least the intelligent controller and the air detector 40 for providing electrical energy; and / or, the open-pit mine circulating ventilation device further includes a filter screen, which is arranged at the lower part of the air guide cavity 11 for filtering the air entering the air guide cavity 11.

[0049] By providing a filter, workers, external equipment and large-sized foreign objects are effectively prevented from entering the air guide cavity 11 , thereby ensuring safety and preventing the air guide cavity 11 from being blocked.

[0050] Optionally, the open-pit mine circulating ventilation device further comprises a solar panel and / or a wind generator, and the solar panel and / or the wind generator are connected to a storage battery.

[0051] By installing solar panels and / or wind turbines, the natural energy at the location of the mine is effectively utilized, energy saving is achieved, and energy consumption and operating costs are effectively reduced, especially in areas rich in solar and wind energy, which can realize the utilization of green energy.

[0052] Subsequently, the use of green energy can be expanded, that is, the number of solar panels and wind turbines can be further optimized to improve energy efficiency, reduce carbon emissions, and achieve more environmentally friendly ventilation solutions; for example, by optimizing the layout of solar panels and the blade design of wind turbines, energy collection efficiency can be improved and operating costs can be reduced; in addition, existing energy storage technologies can be combined to further improve the stability and reliability of energy utilization, ensuring that the device can continue to operate stably under various environmental conditions.

[0053] Specifically, the intelligent controller includes a data processing module, a control module and a communication module; the data processing module adopts a programmable embedded processor, and the communication module includes wireless communication and wired communication, and the wireless communication method includes at least one of Wi-Fi, Bluetooth and 4G / 5G networks; the air detector 40 includes a temperature sensor, a humidity sensor, a wind speed sensor and an air quality sensor; the temperature control component 30 includes multiple electric heating elements.

[0054] This arrangement enables the open-pit mine circulating ventilation device to be remotely monitored and managed, improves the intelligence level of the system, and makes it easier for management personnel to understand the operating status of the ventilation device in real time and make timely adjustments and maintenance; support for multiple communication protocols enables the device to adapt to different communication environments and ensure the stability and reliability of data transmission, especially in remote areas, which can provide longer transmission distances and lower power consumption; the air detector 40 can monitor parameters such as temperature, humidity, wind speed and air quality. The monitoring of these parameters can not only reflect the air quality status of the mine in real time, but also provide accurate data support for the intelligent master control device, thereby achieving more precise control and optimization.

[0055] In a specific embodiment of the present invention, the intelligent controller may also include a data storage module, so that the device can record historical data to facilitate subsequent analysis and optimization, especially during periods of poor air quality, historical data can be analyzed to find the root cause of the problem and take corresponding measures.

[0056] Optionally, the shape of the air guide cavity 11 can be cylindrical; or, the shape of the air guide cavity 11 can be truncated cone or hourglass, and the horizontal cross-sectional dimension of the air guide cavity 11 uniformly increases or decreases in the vertical direction; and / or, the air guide cylinder 10 is an integrated structure or a segmented structure.

[0057] By setting the horizontal cross-sectional size of the air guide cavity 11 to uniformly increase or decrease in the vertical direction, the probability of air turbulence in the air guide cavity 11 is reduced, thereby ensuring the smooth flow of the air flow.

[0058] In summary, the present invention provides a circulating ventilation device for an open-pit mine. The present invention arranges an air guide duct 10, an air guide fan 20 and a temperature control component 30 to cooperate, so that an air flow with a certain wind speed and temperature is taken in from the lower part of the air guide duct 10, and rushes to the external atmosphere from the upper part of the air guide duct 10, so as to form a circulating airflow in space, realize the circulating disturbance of the atmosphere above the mine, and further disturb and disperse the inversion layer above the open-pit mine; the present invention studies the formation and dissipation mechanism of the inversion layer, utilizes the airflow flowing from bottom to top, effectively reduces the temperature of the ground in the mine, increases the turbulence of the atmospheric movement, promotes the vertical transfer of heat, reduces the temperature gradient between the surface of the mine and the atmosphere above, and thus helps to eliminate the inversion layer. temperature layer; by setting the air detector 40 and the intelligent controller, the present invention can be linked with the change of wind direction and wind speed in the wind field where the open-pit mine is located, thereby effectively realizing the elimination of the inversion layer above the mine, not only realizing the air disturbance in the inversion layer, but also disturbing the air above and below the inversion layer, thereby realizing the green ventilation operation of the mine; the present invention has a simple structure and reliable operation, and can effectively carry out scientific and reasonable ventilation and evacuation for the pollutant generation conditions of the open-pit mine, not only realizing the ventilation management of the inversion layer formed on the upper part of the open-pit mine, but also efficiently improving the atmospheric environment of the open-pit mine, reducing pollution in the mine, and improving visibility, effectively ensuring the safety of the staff, thereby realizing safe and efficient production of the open-pit mine. The present invention is low-cost and easy to assemble and maintain, and is suitable for large-scale promotion and use.

[0059] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0060] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0061] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0062] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0063] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A circulating ventilation device for an open-pit mine, characterized in that: include: The wind guide cylinder (10) is vertically arranged; the wind guide cylinder (10) has a wind guide cavity (11) inside, the lower part of the wind guide cavity (11) is connected to the mine air, and the upper part is connected to the external atmosphere, and the lower diameter of the wind guide cavity (11) is not less than the upper diameter of the wind guide cavity (11); An air guide fan (20), arranged in the air guide cavity (11), and used for driving the air flow to flow in a directional manner; A temperature control component (30) is arranged in the air guide cavity (11) and is used to adjust the temperature of the air flow in the air guide cavity (11); At least one air detector (40), at least one of the air detectors (40) being arranged on the air guide cylinder (10) and located at the upper part of the air guide cavity (11), and being used to detect air parameters at the upper part of the air guide cavity (11); An intelligent controller electrically connected to the air detector (40), the air guide fan (20) and the temperature control component (30) to control their operation; The temperature control component (30) heats the airflow in the air guide cavity (11), so that a pressure difference is formed between the air guide cavity (11) and the external atmosphere. The airflow in the air guide cavity (11) enters from the lower part of the air guide cavity (11) and flows out from the upper part of the air guide cavity (11) to the external atmosphere, so as to disturb and disperse the inversion layer of the open-pit mine.

2. The open-pit mine circulation ventilation device according to claim 1, characterized in that: The open-pit mine circulation ventilation device also includes a mounting adjustment frame (50), on which the air guide duct (10) is fixedly mounted; the mounting adjustment frame (50) is arbitrarily mounted on the ground and is used to drive the air guide duct (10) to be raised and lowered, so as to adjust the air intake height of the lower part of the air guide cavity (11) and the air outlet height of the upper part of the air guide cavity (11).

3. The open-pit mine circulation ventilation device according to claim 1, characterized in that: The size of the lower portion of the air guide cavity (11) is adjustable to adjust the air inlet cross-sectional area; and / or the size of the upper portion of the air guide cavity (11) is adjustable to adjust the air outlet cross-sectional area.

4. The open-pit mine circulation ventilation device according to claim 1, characterized in that: The open-pit mine circulation ventilation device further comprises a mounting bracket (60), the two ends of which are respectively fixedly arranged in the air guide cavity (11); the mounting bracket (60) is a hollow bracket so as to allow airflow to pass through; the air guide fan (20) is arranged on the mounting bracket (60), and the rotation axis of the fan blades of the air guide fan (20) is arranged colinearly with the central axis of the air guide cavity (11).

5. The open-pit mine circulation ventilation device according to claim 4, characterized in that: The temperature control component (30) is mounted on the mounting bracket (60) and / or the inner wall of the air guide cavity (11), and at least a portion of it is located above the air guide fan (20).

6. The open-pit mine circulation ventilation device according to claim 1, characterized in that: The vertical distance between the lower part of the air guide cavity (11) and the ground is not less than 1.8 meters; the air guide fan (20) is an axial flow fan, and the air outlet of the axial flow fan faces directly upward; the air guide fan (20) drives the air flow of the air guide cavity (11) to rise; and the air guide cylinder (10) is made of synthetic fiber material.

7. The open-pit mine circulation ventilation device according to claim 1, characterized in that: The open-pit mine circulation ventilation device further comprises a storage battery, which is electrically connected to at least the intelligent controller and the air detector (40) for providing electric energy; And / or, the open-pit mine circulation ventilation device further comprises a filter screen, which is arranged at the lower part of the air guide cavity (11) and is used for filtering the air entering the air guide cavity (11).

8. The open-pit mine circulation ventilation device according to claim 7, characterized in that: The open-pit mine circulating ventilation device further comprises a solar power generation panel and / or a wind power generator, and the solar power generation panel and / or the wind power generator are connected to the storage battery.

9. The open-pit mine circulation ventilation device according to claim 1, characterized in that: The intelligent controller comprises a data processing module, a control module and a communication module; the data processing module adopts a programmable embedded processor, the communication module comprises a wireless communication mode and a wired communication mode, and the wireless communication mode comprises at least one of Wi-Fi, Bluetooth and 4G / 5G network; the air detector (40) comprises a temperature sensor, a humidity sensor, a wind speed sensor and an air quality sensor; the temperature control component (30) comprises a plurality of electric heating elements.

10. The open-pit mine circulation ventilation device according to claim 1, characterized in that: The shape of the air guiding cavity (11) may be cylindrical; or the shape of the air guiding cavity (11) may be truncated cone or hourglass. Furthermore, the horizontal cross-sectional dimensions of the air guiding cavity (11) uniformly increase or decrease in the vertical direction; and / or, the air guiding cylinder (10) is an integrated structure or a segmented structure.

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