A mine ventilation duct with a pretreatment structure

Abstract

This utility model discloses a mine ventilation duct with a pretreatment structure, including a duct body, an air inlet assembly, a folded corrugated pipe, and an exhaust assembly. The air inlet assembly includes an air inlet pipe, a pretreatment box, and a guide cylinder. One end of the air inlet pipe and one end of the guide cylinder are respectively connected to the corresponding side of the pretreatment box. Inside the pretreatment box, near the air inlet pipe, a dust removal structure and a harmful gas purification structure are arranged sequentially. The dust removal structure includes a coarse filter, a medium-efficiency filter, and a high-efficiency filter. The harmful gas purification structure includes a first adsorption module and a second adsorption module. This mine ventilation duct with a pretreatment structure, by setting up a pretreatment box, allows for comprehensive and efficient pretreatment of the mine air entering the duct body as it passes through the dust removal structure and the harmful gas purification structure. This effectively removes dust and harmful gases from the air, improves the underground working environment, and protects the health of miners and the safety of mine production.

Description

Technical Field

[0001] This utility model relates to the technical field of mine ventilation ducts, specifically a mine ventilation duct with a pre-treatment structure. Background Technology

[0002] In mining operations, mine ventilation ducts are a key component of the ventilation system. Their function is to transport fresh air from the ground to the underground working face, while simultaneously expelling harmful gases and dust generated underground, thus creating a safe working environment for miners.

[0003] Extensive research revealed a typical example in existing technology, such as CN206513395U, which describes a novel mine ventilation duct. This duct includes a ventilator, a ventilator connector, external teeth on the connector, a rotary engagement groove, a ventilator connecting sleeve, a ventilation duct, sealing external teeth, a first sealing groove, a first outer shell positioning through hole, and a second outer shell positioning through hole. The ventilator has a ventilator connector on its left side, with external teeth on its exterior. The ventilation duct has a ventilator connecting sleeve on its right side, with a rotary engagement groove inside. The external teeth of the connector screw into the rotary engagement groove for engagement. The first and second sealing outer shells are connected, and the first and second sealing grooves form a sealing toothed cavity. The ventilator connecting sleeve has sealing external teeth that engage with the sealing toothed cavity.

[0004] In summary, existing mine ventilation ducts present numerous problems during operation. On one hand, mine air often contains large amounts of solid particles such as dust and coal dust, as well as harmful gases like hydrogen sulfide and carbon monoxide. Directly transporting this untreated air to the work face not only poses a serious threat to miners' health but also easily leads to safety accidents such as dust explosions. On the other hand, when untreated air enters the ventilation duct directly, dust and other particles adhere to the inner wall of the duct, increasing ventilation resistance, reducing ventilation efficiency, shortening the duct's lifespan, and increasing the operating costs of the mine ventilation system. Therefore, improvements to the existing equipment are necessary to address these issues. Utility Model Content

[0005] The purpose of this utility model is to provide a mine ventilation duct with a pretreatment structure to solve the problems mentioned in the background art, which are that the existing mine ventilation ducts do not pretreat the transported gas during use, which can easily lead to safety problems, reduced ventilation efficiency, and reduced service life of the ventilation duct.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mine ventilation duct with a pretreatment structure, comprising a ventilation duct body,

[0007] The air duct body includes an air inlet assembly, a folded corrugated pipe, and an exhaust assembly. Second connecting flanges at both ends of the folded corrugated pipe are detachably connected to one side of the air inlet assembly and the other side of the exhaust assembly, respectively. The air inlet assembly includes an air inlet pipe, a pretreatment box, and a guide cylinder. One end of the air inlet pipe and one end of the guide cylinder are connected to the corresponding side of the pretreatment box, respectively. A first connecting flange is provided at the other end of both the air inlet pipe and the guide cylinder. Inside the pretreatment box, near the air inlet pipe, a dust removal structure and a harmful gas purification structure are arranged sequentially. The dust removal structure includes a coarse filter, a medium-efficiency filter, and a high-efficiency filter. The harmful gas purification structure includes a first adsorption module and a second adsorption module. The exhaust assembly includes an air outlet pipe and a detection assembly. Third connecting flanges are provided at both ends of the air outlet pipe, and a detection assembly is provided at the end of the air outlet pipe furthest from the folded corrugated pipe.

[0008] Preferably, the coarse filter screen is made of woven metal wire, the medium-efficiency filter screen is made of non-woven fabric, and the high-efficiency filter screen is made of glass fiber filter paper.

[0009] Preferably, the first adsorption module is an activated carbon structure, and the second adsorption module is a molecular sieve structure.

[0010] Preferably, a guide vane is provided in the middle of the inside of the guide cylinder, and the guide vane has a spiral structure.

[0011] Preferably, the folded corrugated pipe is made of metal.

[0012] Preferably, the detection component includes a mounting frame, support rods, a filter screen, and an air quality sensor. The mounting frame has support rods symmetrically arranged on the side near the air outlet duct, and the other end of the support rods is connected to the filter screen. The filter screen is located inside the air outlet duct. The mounting frame has an air quality sensor in the middle on the side near the air outlet duct, and multiple ventilation openings are equidistantly provided in the middle of the mounting frame between the air quality sensor and the support rods.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the mine ventilation duct with a pretreatment structure of this utility model, by setting a pretreatment box, enables the mine air entering the ventilation duct body to be comprehensively and efficiently pretreated when the gas passes through the dust removal structure and the harmful gas purification structure, effectively removing dust and harmful gases in the air, improving the underground working environment, and protecting the health of miners and the safety of mine production.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] Figure 1This is a front view structural diagram of the air intake component of this utility model;

[0016] Figure 2 This is a frontal cross-sectional view of the present invention.

[0017] Figure 3 This is a front view cross-sectional structural diagram of the exhaust component of this utility model.

[0018] In the diagram: 1. Inlet duct; 2. Pretreatment box; 201. Coarse filter; 202. Medium filter; 203. High efficiency filter; 204. First adsorption module; 205. Second adsorption module; 3. Guide cylinder; 301. Guide vane; 4. First connecting flange; 5. Folded corrugated pipe; 6. Second connecting flange; 7. Outlet duct; 8. Third connecting flange; 9. Mounting bracket; 10. Support rod; 11. Filter plate; 12. Air quality sensor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 This utility model provides a technical solution: a mine ventilation duct with a pre-treatment structure, according to... Figure 1 and Figure 2 As shown, the air duct body includes an air inlet assembly, a folded corrugated pipe 5, and an exhaust assembly. The second connecting flanges 6 at both ends of the folded corrugated pipe 5 are detachably connected to one side of the air inlet assembly and the other side of the exhaust assembly, respectively. The folded corrugated pipe 5 is made of metal. The folded corrugated pipe 5 allows the air duct body to move freely in complex and varied installation environments. It can easily cope with bending, twisting, or folding, greatly reducing installation difficulty and cost. The air inlet assembly includes an air inlet pipe 1, a pretreatment box 2, and a guide cylinder 3. One end of the air inlet pipe 1 and one end of the guide cylinder 3 are connected to the corresponding side of the pretreatment box 2, respectively. At the same time, the other end of the air inlet pipe 1 and the guide cylinder 3 are both provided with a first connecting flange 4. The guide cylinder 3 has a guide vane 301 in the middle inside. The guide vane 301 has a spiral structure. The guide vane 301 can guide the air to flow evenly, reduce ventilation resistance, and increase the air flow speed in the air duct body, thereby improving the ventilation efficiency of the entire mine ventilation system.

[0021] To further explain, the pretreatment box 2 has a dust removal structure and a harmful gas purification structure arranged sequentially on the side near the air inlet pipe 1. The dust removal structure includes a coarse filter 201, a medium filter 202, and a high-efficiency filter 203. Meanwhile, the harmful gas purification structure includes a first adsorption module 204 and a second adsorption module 205.

[0022] Specifically, the coarse filter 201 is made of woven metal wire with large mesh size, which can intercept larger dust and particulate matter in the air, such as coal dust. The medium filter 202 is made of non-woven fabric with high dust holding capacity, which can further filter smaller dust particles in the air. The high-efficiency filter 203 is made of glass fiber filter paper, which can effectively capture tiny dust particles and ensure that the dust content of the air entering the air duct is greatly reduced.

[0023] Specifically, the first adsorption module 204 is an activated carbon structure, which has a rich pore structure and can adsorb harmful gases such as hydrogen sulfide and sulfur dioxide. The second adsorption module 205 is a molecular sieve structure, which has good adsorption and separation effects on gases such as carbon monoxide.

[0024] To further explain, the filters in the dust removal structure and the adsorption modules in the harmful gas purification structure are both detachable, which facilitates regular replacement and cleaning, reduces equipment maintenance costs, and ensures the long-term stable operation of the pretreatment structure.

[0025] according to Figure 1 and Figure 3 As shown, the exhaust assembly includes an exhaust pipe 7 and a detection component. Both ends of the exhaust pipe 7 are equipped with third connecting flanges 8. A detection component is located at the end of the exhaust pipe 7 furthest from the folded corrugated pipe 5. The detection component includes a mounting frame 9, support rods 10, a filter screen 11, and an air quality sensor 12. Support rods 10 are symmetrically arranged on the side of the mounting frame 9 closest to the exhaust pipe 7, with the other end of each support rod connected to the filter screen 11. The filter screen 11 further filters the internal gas, improving the filtration effect. The filter screen 11 is located inside the exhaust pipe 7. An air quality sensor 12 is located in the middle of the side of the mounting frame 9 closest to the exhaust pipe 7. The air quality sensor 12 is existing technology. Its placement allows for real-time monitoring of the pre-treated air quality, enabling real-time monitoring of underground air quality, timely detection of problems, and timely implementation of measures to further ensure mine operation safety. Multiple ventilation openings are equidistantly spaced in the middle of the mounting frame 9 between the air quality sensor 12 and the support rods 10.

[0026] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mine ventilation duct with a pretreatment structure, comprising a ventilation duct body, characterized in that: The air duct body includes an air inlet assembly, a folded corrugated pipe (5), and an exhaust assembly. Second connecting flanges (6) at both ends of the folded corrugated pipe (5) are detachably connected to one side of the air inlet assembly and the other side of the exhaust assembly, respectively. The air inlet assembly includes an air inlet pipe (1), a pretreatment box (2), and a guide cylinder (3). One end of the air inlet pipe (1) and one end of the guide cylinder (3) are connected to the corresponding side of the pretreatment box (2). Simultaneously, the other ends of both the air inlet pipe (1) and the guide cylinder (3) are provided with first connecting flanges (4). The pretreatment box ( 2) A dust removal structure and a harmful gas purification structure are arranged in sequence on the side of the air inlet pipe (1). The dust removal structure includes a coarse filter (201), a medium filter (202) and a high efficiency filter (203). The harmful gas purification structure includes a first adsorption module (204) and a second adsorption module (205). The exhaust assembly includes an air outlet pipe (7) and a detection component. Both ends of the air outlet pipe (7) are provided with a third connecting flange (8). At the same time, a detection component is provided at the end of the air outlet pipe (7) away from the folded corrugated pipe (5).

2. The mine ventilation duct with pretreatment structure as described in claim 1, characterized in that: The coarse filter (201) is made of woven metal wire, the medium filter (202) is made of non-woven fabric, and the high-efficiency filter (203) is made of glass fiber filter paper.

3. The mine ventilation duct with pretreatment structure as described in claim 1, characterized in that: The first adsorption module (204) has an activated carbon structure, and the second adsorption module (205) has a molecular sieve structure.

4. The mine ventilation duct with pretreatment structure as described in claim 1, characterized in that: The guide tube (3) has a guide vane (301) in the middle, and the guide vane (301) has a spiral structure.

5. The mine ventilation duct with pretreatment structure as described in claim 1, characterized in that: The folded corrugated pipe (5) is made of metal.

6. The mine ventilation duct with pretreatment structure as described in claim 1, characterized in that: The detection component includes a mounting frame (9), a support rod (10), a filter plate (11), and an air quality sensor (12). The mounting frame (9) is symmetrically provided with support rods (10) on the side near the air outlet pipe (7), and the other end of the support rods (10) is connected to the filter plate (11). The filter plate (11) is located inside the side of the air outlet pipe (7). The air quality sensor (12) is provided in the middle of the side of the mounting frame (9) near the air outlet pipe (7), and multiple ventilation openings are equidistantly provided in the middle of the mounting frame (9) between the air quality sensor (12) and the support rods (10).

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