High-altitude underground mine roadway ventilation duct structure

Abstract

The utility model discloses a high altitude area underground mine haulage roadway ventilation pipeline structure, including a plurality of double -cavity pipelines, the double -cavity pipeline inside is provided with a baffle, and the upper portion of baffle is the air supply chamber, and the lower portion of baffle is the exhaust chamber, connecting device, connecting device installs between adjacent double -cavity pipeline, and every connecting device all have the air supply pipe and return air fan, the air supply pipe communicates air supply chamber, and return air fan communicates exhaust chamber, and this device has higher integration, can have air supply and exhaust function simultaneously.

Description

Technical Field

[0001] This utility model relates to a ventilation duct structure for underground mining tunnels in high-altitude areas. Background Technology

[0002] In underground mining tunnels at high altitudes, ventilation systems are crucial for ensuring operational safety and efficiency. The high-altitude environment is inherently oxygen-depleted, and the work within the tunnels generates dust and exhaust gases (such as blasting fumes and equipment exhaust). Poor ventilation can easily lead to insufficient oxygen levels and excessive dust concentrations, endangering the health of workers and potentially causing safety accidents (such as dust explosions and asphyxiation).

[0003] Therefore, air supply ducts and exhaust ducts need to be installed in the tunnel. The air supply ducts mainly bring in fresh air from outside, while the exhaust ducts exhaust the air containing a large amount of dust particles from the tunnel.

[0004] In existing technologies, air supply ducts and exhaust ducts are set up independently, which takes up a lot of internal space in the tunnel.

[0005] Based on the above problems, we designed a ventilation duct structure for underground mining roadways in high-altitude areas that has a higher degree of integration and can simultaneously perform air supply and exhaust functions. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a ventilation duct structure for underground mining roadways in high-altitude areas with a higher degree of integration, which can simultaneously perform both air supply and exhaust functions.

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A ventilation duct structure for underground mining roadways in high-altitude areas, comprising,

[0009] Multiple dual-cavity pipes, each with a partition inside, the upper part of which is an air supply cavity and the lower part of which is an air exhaust cavity;

[0010] A connecting device is installed between adjacent dual-cavity pipes. Each connecting device is equipped with an air supply pipe and a return air fan. The air supply pipe connects to the air supply cavity, and the return air fan connects to the exhaust cavity.

[0011] A plug is installed at the end of the double-cavity pipe at the starting end. A main air inlet pipe is installed on the end face of the plug, which connects to the air supply cavity. The main air inlet pipe is connected to the air supply equipment of the mine. A main air outlet pipe is installed on the end face of the plug, which connects to the exhaust cavity. The main air outlet pipe is connected to the exhaust equipment of the mine.

[0012] A sealing cap, which is fixed to the end of the double-lumen pipe by a flange.

[0013] Preferably, the connecting device includes a connecting pipe, a second partition corresponding to the partition is provided inside the connecting pipe, recesses are provided at both ends of the connecting pipe, an upper branch pipe and a lower branch pipe are provided on the outer wall of the connecting pipe, the upper branch pipe and the lower branch pipe are respectively located on the upper and lower sides of the second partition, the air supply pipe is connected to the upper branch pipe through a flange, the return air fan is connected to the lower branch pipe through a flange, a sealing element is installed in the recess, the dual-cavity pipe is inserted into the sealing element, and a seal is formed between the sealing element and the sealing element.

[0014] Preferably, a stepped hole is provided at the axial center of the seal, the seal is inserted into the connecting pipe and limited by the bottom of the concave hole, a horizontal bar is provided on the wall of the stepped hole, the double-lumen pipe is inserted into the seal and the end of the double-lumen pipe abuts against the stepped surface of the seal, the partition and the second partition are respectively located at both ends of the horizontal bar and are squeezed with the horizontal bar to form a seal.

[0015] Preferably, an ear plate is provided on the outer wall of the connecting pipe, and a second ear plate corresponding to the ear plate is provided on the outer wall of the double-lumen pipe. A double-ended bolt is installed between the ear plate and the second ear plate. After the double-ended bolt is tightened, the double-lumen pipe is tightened so that a seal is formed between the end face of the double-lumen pipe and the stepped surface of the stepped hole.

[0016] Preferably, a first sealing sheet is sandwiched between the end cap and the dual-cavity pipe. The first sealing sheet has a first sealing block inserted into the air supply cavity and the air return cavity. The main air inlet pipe passes through the upper first sealing block, and the main air outlet pipe passes through the lower first sealing block.

[0017] Preferably, a second sealing sheet is sandwiched between the sealing cover and the dual-cavity pipe, the second sealing sheet having a second sealing block inserted into the air supply cavity and the air return cavity.

[0018] Preferably, a metal mesh cover is detachably installed at the end of the air supply duct away from the connecting device.

[0019] The beneficial effects of this utility model are:

[0020] One advantage is the adoption of a dual-cavity pipe design, which is divided into an air supply cavity and an exhaust cavity by an internal partition. A single pipe can achieve both air supply and return functions without the need to lay two pipes in parallel, which greatly reduces the space occupied in the roadway and facilitates the passage of mine cars and the layout of equipment. It is especially suitable for high-altitude underground roadways with narrow cross sections.

[0021] Secondly, adjacent double-lumen pipes can be quickly connected through a connecting device, and the fastening structure of the ear plate and double-headed bolts simplifies the installation process. At the same time, it reduces the amount of pipes and fixing components, thereby reducing material costs and construction difficulty, which is especially advantageous in complex tunnel layouts.

[0022] Thirdly, the sealing element of the connecting device is squeezed and sealed with the dual-chamber pipe. The plug and sealing cover are further sealed by inserting the first sealing block and the second sealing block into the cavity, forming a multi-seal structure. This effectively avoids crossflow between the air supply cavity and the air exhaust cavity, ensuring that clean air is accurately delivered and dusty exhaust gas is efficiently discharged.

[0023] Fourthly, by directly replenishing clean air through the air supply duct, the oxygen content in the tunnel can be specifically increased, alleviating the problem of hypoxia at high altitudes; the return air fan actively extracts dust from the tunnel, and in conjunction with the mine's high-power exhaust equipment, it significantly reduces dust concentration, protects the health of workers, and improves visibility.

[0024] Fifthly, the metal mesh cover at the end of the air supply duct can prevent rodents from entering the duct and causing blockage or pollution, while reducing dust backflow during shutdown, reducing equipment maintenance frequency, and extending the service life of the pipeline system. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the device;

[0027] Figure 2 This is a schematic diagram showing the connection between the connecting pipe and the double-lumen pipe.

[0028] Figure 3 This is a side view of the connecting device;

[0029] Figure 4 Exploded view of the connecting pipe and seals;

[0030] Figure 5 This is a schematic diagram of the installation of a double-ended bolt;

[0031] Figure 6 This is a side view of the first sealing strip;

[0032] Figure 7 This is a side view of the second sealing strip. Detailed Implementation

[0033] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0034] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0035] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, 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 limitations on this utility model.

[0036] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] See Figure 1 , Figure 2 and Figure 3 The diagram shows a ventilation duct structure for underground mining tunnels in high-altitude areas, comprising:

[0039] Multiple double-cavity pipes 1, each double-cavity pipe 1 having a partition 11 inside, the upper part of the partition 11 being an air supply cavity 12, and the lower part of the partition 11 being an air exhaust cavity 13;

[0040] A connecting device 2 is installed between adjacent dual-cavity pipes 1. Each connecting device 2 is equipped with an air supply pipe 210 and a return air fan 220. The air supply pipe 210 is connected to the air supply cavity 12, and the return air fan 220 is connected to the exhaust cavity 13.

[0041] A plug 3 is installed at the end of the double-cavity pipe 1 at the starting end. A main air inlet pipe 31 is installed on the end face of the plug 3, which connects to the air supply cavity 12. The main air inlet pipe 31 is connected to the air supply equipment of the mine. A main air outlet pipe 32 is installed on the end face of the plug 3, which connects to the exhaust cavity 13. The main air outlet pipe 32 is connected to the exhaust equipment of the mine.

[0042] Sealing cap 4, which is fixed to the end of the double-lumen pipe 1 by a flange.

[0043] In the above technical solution, a single double-cavity duct 1 is used, and an internal baffle 11 is used to form an air supply cavity 12 and a return air cavity 13. A single duct can achieve the dual effects of air supply and return.

[0044] With the connection device 2, the air supply pipe 210 and the return air fan 220, the air supply pipe 210 can deliver clean air, so that fresh air always enters the tunnel and increases the oxygen content in the tunnel.

[0045] The return air fan 220 can continuously draw air out of the tunnel, extracting particulate matter from the tunnel into the return air chamber 13, and then exhausting it through the mine's high-power exhaust equipment, thereby reducing dust in the tunnel, protecting workers in the tunnel, improving visibility, and facilitating their work in the tunnel.

[0046] See Figure 2 and Figure 4 As shown, the connecting device 2 includes a connecting pipe 21, inside which is a second partition 22 corresponding to the partition 11. Both ends of the connecting pipe 21 are provided with recesses 23. An upper branch pipe 25 and a lower branch pipe 26 are provided on the outer wall of the connecting pipe 21. The upper branch pipe 25 and the lower branch pipe 26 are located on the upper and lower sides of the second partition 22, respectively. The air supply pipe 210 is connected to the upper branch pipe 25 through a flange. The return air fan 220 is connected to the lower branch pipe 26 through a flange. A sealing element 24 is installed in the recess 23. The dual-cavity pipe 1 is inserted into the sealing element 24 and forms a seal with the sealing element 24.

[0047] In the above technical solution, the connection between two adjacent double-lumen pipes 1 is achieved through the connecting pipe 21, and the sealing at the joint position of the connecting pipe 21 and the double-lumen pipe 1 is achieved through the sealing element 24.

[0048] See Figure 2 and Figure 4As shown, a stepped hole 241 is provided at the axial center of the sealing member 24. The sealing member 24 is inserted into the connecting pipe 21 and is limited by the bottom of the concave hole 23. A horizontal bar 242 is provided on the wall of the stepped hole 241. The double-lumen pipe 1 is inserted into the sealing member 24, and the end of the double-lumen pipe 1 abuts against the stepped surface of the sealing member 24. The partition 11 and the second partition 22 are respectively located at both ends of the horizontal bar 242 and are squeezed with the horizontal bar 242 to form a seal.

[0049] The above technical solution aims to improve the sealing performance when the dual-lumen pipe 1 and the connecting pipe 21 are fitted together.

[0050] When the installation is completed, the width of the crossbar 242 is significantly greater than the thickness of the partition and the second partition, so that the crossbar 242 can form an effective seal after cooperating with the partition and the second partition.

[0051] See Figure 5 As shown, an ear plate 27 is provided on the outer wall of the connecting pipe 21, and a second ear plate 17 corresponding to the ear plate is provided on the outer wall of the double-lumen pipe 1. A double-ended bolt 28 is installed between the ear plate 27 and the second ear plate 17. After the double-ended bolt 28 is tightened, the double-lumen pipe 1 is tightened so that a seal is formed between the end face of the double-lumen pipe 1 and the stepped surface of the stepped hole 241.

[0052] In the above technical solution, double-headed bolts 8 are used for tightening to ensure sealing during installation and prevent the air supply chamber and exhaust chamber from connecting.

[0053] See Figure 1 and Figure 6 As shown, a first sealing plate 31 is sandwiched between the plug cover 3 and the dual-cavity pipe 1. The first sealing plate 31 has a first sealing block 32 inserted into the air supply cavity and the air return cavity. The main air inlet pipe passes through the first sealing block located above, and the main air outlet pipe passes through the first sealing block located below.

[0054] The above technical solution mainly focuses on further sealing the air inlet and outlet to prevent airflow from converging and ensure that the supplied air is clean.

[0055] See Figure 1 and Figure 7 As shown, a second sealing sheet 41 is sandwiched between the sealing cover 4 and the dual-cavity pipe 1. The second sealing sheet 41 has a second sealing block 42 that is inserted into the air supply cavity and the air return cavity.

[0056] In the above technical solution, the second sealing block 42 can specifically seal the end of the double-lumen pipe 1 to prevent air leakage.

[0057] See Figure 3 As shown, a metal mesh cover 211 is detachably installed at the end of the air supply duct 210 away from the connecting device.

[0058] In the above technical solution, the primary function of the metal mesh cover 211 is to prevent rodents from entering the alleyway and to prevent them from dying in the double-lumen pipe and causing foul odors in the air supply.

[0059] The second function is to provide simple dust prevention, especially when the air supply equipment is shut down, to prevent dust from entering.

[0060] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0061] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

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

[0063] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0064] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0065] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A ventilation duct structure for underground ore transport roadways in high-altitude areas, characterized in that: include, Multiple dual-cavity pipes, each with a partition inside, the upper part of which is an air supply cavity and the lower part of which is an air exhaust cavity; A connecting device is installed between adjacent dual-cavity pipes. Each connecting device is equipped with an air supply pipe and a return air fan. The air supply pipe connects to the air supply cavity, and the return air fan connects to the exhaust cavity. A plug is installed at the end of the double-cavity pipe at the starting end. A main air inlet pipe is installed on the end face of the plug, which connects to the air supply cavity. The main air inlet pipe is connected to the air supply equipment of the mine. A main air outlet pipe is installed on the end face of the plug, which connects to the exhaust cavity. The main air outlet pipe is connected to the exhaust equipment of the mine. A sealing cap, which is fixed to the end of the double-lumen pipe by a flange.

2. The ventilation duct structure for underground mining roadways in high-altitude areas according to claim 1, characterized in that: The connecting device includes a connecting pipe with a second partition corresponding to the partition inside the connecting pipe. Both ends of the connecting pipe have recessed holes. An upper branch pipe and a lower branch pipe are provided on the outer wall of the connecting pipe. The upper branch pipe and the lower branch pipe are located on the upper and lower sides of the second partition, respectively. The air supply pipe is connected to the upper branch pipe through a flange, and the return air fan is connected to the lower branch pipe through a flange. A sealing element is installed in the recessed hole, and the dual-cavity pipe is inserted into the sealing element to form a seal with the sealing element.

3. The ventilation duct structure for underground mining roadways in high-altitude areas according to claim 2, characterized in that: The seal has a stepped hole at its axial center. The seal is inserted into the connecting pipe and is limited by the bottom of the concave hole. A horizontal bar is provided on the wall of the stepped hole. The double-lumen pipe is inserted into the seal, and the end of the double-lumen pipe abuts against the stepped surface of the seal. The partition and the second partition are located at both ends of the horizontal bar and are pressed together with the horizontal bar to form a seal.

4. The ventilation duct structure for underground mining roadways in high-altitude areas according to claim 3, characterized in that: An ear plate is provided on the outer wall of the connecting pipe, and a second ear plate corresponding to the ear plate is provided on the outer wall of the double-lumen pipe. A double-ended bolt is installed between the ear plate and the second ear plate. After the double-ended bolt is tightened, the double-lumen pipe is tightened so that a seal is formed between the end face of the double-lumen pipe and the stepped surface of the stepped hole.

5. The ventilation duct structure for underground mining roadways in high-altitude areas according to claim 1, characterized in that: A first sealing plate is sandwiched between the end cap and the dual-chamber pipe. The first sealing plate has a first sealing block inserted into the air supply chamber and the air return chamber. The main air inlet pipe passes through the upper first sealing block, and the main air outlet pipe passes through the lower first sealing block.

6. The ventilation duct structure for underground mining roadways in high-altitude areas according to claim 1, characterized in that: A second sealing plate is sandwiched between the sealing cover and the dual-cavity pipe, the second sealing plate having a second sealing block inserted into the air supply cavity and the air return cavity.

7. The ventilation duct structure for underground mining roadways in high-altitude areas according to claim 1, characterized in that: A metal mesh cover is detachably installed at the end of the air supply duct away from the connecting device.

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