Mine ventilation and air increasing equipment

Abstract

The utility model belongs to the technical field of mine ventilation equipment, and discloses mine ventilation air increasing equipment which comprises an air inlet pipe, a first axial flow fan fixedly installed on the left side of the air inlet pipe, a first fixing frame fixedly installed on one side in the air inlet pipe, and a second fixing frame fixedly installed on one side in an air outlet pipe. According to the mine ventilation air increasing equipment, when ventilation needs to be carried out on the interior of a mine, the first axial flow fan is started, the first axial flow fan works to generate wind power, the wind power is blown to the air inlet pipe, the first fan blade is driven to rotate, the first fan blade is driven to rotate, and the first fan blade and the second fan blade are driven to rotate. And in the process, the first fan blade rotates under the influence of wind power, when the first axial flow fan breaks down, the second axial flow fan is started to drive the first fan blade and the second fan blade to rotate according to the principle, air supply and air exhaust are achieved at the same time, and ventilation in the mine can be rapidly recovered when the fan breaks down.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine ventilation equipment, in particular to mine ventilation air-increasing equipment. Background Art

[0002] A mine is a general term for the shafts, chambers, equipment, ground buildings and structures that form an underground coal mine production system. Sometimes, the inclined shafts, vertical shafts, and horizontal shafts in the underground development of mines are also called mines. The size of the mine field, the production capacity and service life of each mine are one of the key issues that must be solved in the mine design. Mine ventilation equipment is a series of equipment designed to ensure good air quality inside the mine, remove harmful gases and dust, control the temperature inside the mine, and provide enough fresh air for miners to breathe. These equipment are crucial to protecting the health of miners and safe production.

[0003] For example, a mine ventilation and air-increasing device with publication number CN214330673U comprises an air inlet pipe and an air outlet pipe, and fan blades are arranged inside the air inlet pipe and the air outlet pipe, and the fan blades inside the air inlet pipe and the air outlet pipe are driven to rotate by a double-headed motor, thereby promoting the movement of gas inside the air inlet pipe and the air outlet pipe, thereby facilitating the discharge of gas inside the mine through the air outlet pipe, and the external air is transported to the inside of the frame through the air inlet pipe, and a shell is provided, and a connecting flange on the shell is provided, which is convenient for connecting and installing multiple utility models, convenient for assembly, and convenient for protecting the air inlet pipe and the air outlet pipe, and by arranging fan blades inside the air inlet pipe and the air outlet pipe, the effect of graded transportation is achieved, thereby improving the transportation efficiency, improving the air-increasing effect, facilitating use, and ensuring the air supply inside the mine;

[0004] This mine ventilation equipment works by driving two fan blades with a single motor to achieve air intake and exhaust. However, when the motor is damaged, it does not have a backup machine and cannot quickly restore ventilation in the well. In order to solve the above problem, a mine ventilation air-increasing equipment is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a mine ventilation and air-increasing device to solve the above problems, comprising:

[0006] An air inlet duct, a first axial flow fan is fixedly installed on the left side thereof, a first fixing frame is fixedly installed on one side inside the air inlet duct, and a first fan blade is rotatably connected inside the first fixing frame;

[0007] An air outlet duct, a second axial flow fan is fixedly installed on the left side thereof, a second fixing frame is fixedly installed on one side inside the air outlet duct, a second fan blade is rotatably connected inside the second fixing frame, and a transmission belt is provided between the first fan blade and the second fan blade;

[0008] A connecting pipe is fixedly installed between the air inlet pipe and the air outlet pipe.

[0009] Through the above technical solution, when ventilation inside the mine is required, the first axial flow fan is started. The first axial flow fan generates wind and blows it towards the air inlet pipe, and then enters the mine interior through the air inlet pipe, thereby blowing fresh air into the mine interior. During this process, the first fan blade rotates under the influence of the wind. During the rotation of the first fan blade, it drives the transmission belt to rotate. When the transmission belt rotates, it drives the second fan blade to rotate. When the second fan blade rotates, it sends the air in the air outlet pipe outward, thereby realizing simultaneous air supply and exhaust. When the first axial flow fan fails, the second axial flow fan is started to drive the first fan blade and the second fan blade to rotate respectively according to the above principle, and also realizes simultaneous air supply and exhaust, which is convenient for quickly restoring the ventilation in the mine when the fan fails.

[0010] In a preferred embodiment, the orientation of the air outlet pipe is opposite to that of the first axial flow fan, and the orientations of the first fan blade and the second fan blade are opposite.

[0011] In a preferred embodiment, a protruding portion is provided in the middle of the air inlet pipe.

[0012] Through the above technical solution, by providing a protruding portion inside the air inlet pipe, the inner radius of the air inlet pipe forms a large-small-large change, making the air flow change from thick to thin when flowing through the inside of the air inlet pipe, so as to accelerate the gas flow rate and thus improve the air intake efficiency.

[0013] In a preferred embodiment, a fixed seat is fixedly installed on one side inside the air outlet pipe, and a filter membrane is fixedly installed inside the fixed seat.

[0014] Through the above technical solution, during the exhaust process, since there is more dust in the air in the mine, the dust can be filtered through the filter membrane to prevent the dust from accumulating on the fan blade and affecting its working efficiency.

[0015] In a preferred embodiment, protective nets are fixedly installed on the right inner walls of both the air inlet pipe and the air outlet pipe.

[0016] Through the above technical solution, by providing the protective nets, impurities in the mine are prevented from entering the pipe and causing damage to the fan.

[0017] In a preferred embodiment, locking seats are fixedly installed at the bottoms of both the first axial flow fan and the second axial flow fan.

[0018] Through the above technical solution, by providing the locking seats, the first axial flow fan and the second axial flow fan are fixed to the ground, improving their stability.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are: The present utility model provides a mine ventilation and air volume increasing device.

[0020] When ventilation inside the mine is required, start the first axial flow fan. The first axial flow fan generates wind that blows towards the air inlet pipe and then enters the mine interior through the air inlet pipe, thereby blowing fresh air into the mine. During this process, the first fan blade rotates under the influence of the wind. During the rotation of the first fan blade, it drives the conveyor belt to rotate. When the conveyor belt rotates, it drives the second fan blade to rotate. When the second fan blade rotates, it sends the air in the air outlet pipe outwards, thus achieving simultaneous air supply and exhaust. When the first axial flow fan fails, start the second axial flow fan, and according to the above principle, it drives the first fan blade and the second fan blade to rotate respectively, also achieving simultaneous air supply and exhaust, which is convenient for quickly restoring ventilation in the mine when the fan fails. Description of the Drawings

[0021] Figure 1 is a structural schematic diagram of the present utility model;

[0022] Figure 2 is a sectional view of the present utility model;

[0023] Figure 3 of the present utility model Figure 2 is an enlarged view of A in

[0024] Reference numerals in the figures: 1 - air inlet pipe; 2 - connecting pipe; 3 - air outlet pipe; 4 - first axial flow fan; 5 - second axial flow fan; 6 - first fixing bracket; 7 - first fan blade; 8 - second fixing bracket; 9 - second fan blade; 10 - conveyor belt; 11 - protruding part; 12 - fixing seat; 13 - filter membrane; 14 - protective net; 15 - locking seat. Detailed Embodiment

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0026] The following will be combined with Figures 1-3 to give a detailed description of a mine ventilation and air-increasing device according to an embodiment of the present utility model.

[0027] Embodiment:

[0028] A mine ventilation and air-increasing device includes:

[0029] The air inlet pipe 1 is fixedly installed with a first axial flow fan 4 on its left side. In the middle of the interior of the air inlet pipe 1, there is a protruding part 11. By setting the protruding part 11 inside the air inlet pipe 1, the inner radius of the air inlet pipe 1 forms a large-small-large change, making the air flow change from thick to thin when flowing through the interior of the air inlet pipe 1, so as to accelerate the gas flow rate and thus improve the air inlet efficiency. On one side inside the air inlet pipe 1, a first fixing frame 6 is fixedly installed. Inside the first fixing frame 6, a first fan blade 7 is rotatably connected. When it is necessary to ventilate the interior of the mine, the first axial flow fan 4 is started. The first axial flow fan 4 generates wind and blows it towards the air inlet pipe 1, and then enters the interior of the mine through the air inlet pipe 1, thereby blowing fresh air into the interior of the mine;

[0030] The air outlet pipe 3 is fixedly installed with a second axial flow fan 5 on its left side. Locking seats 15 are fixedly installed at the bottoms of both the first axial flow fan 4 and the second axial flow fan 5. By setting the locking seats 15, the first axial flow fan 4 and the second axial flow fan 5 are fixed to the ground to improve their stability. Protective nets 14 are fixedly installed on the right inner walls of both the air inlet pipe 1 and the air outlet pipe 3. By setting the protective nets 14, impurities in the well are prevented from entering the pipe and causing damage to the fan. On one side inside the air outlet pipe 3, a second fixing frame 8 is fixedly installed. Inside the second fixing frame 8, a second fan blade 9 is rotatably connected. The air outlet pipe 3 and the first axial flow fan 4 face in opposite directions, and the first fan blade 7 and the second fan blade 9 face in opposite directions. A transmission belt 10 is arranged between the first fan blade 7 and the second fan blade 9. The first fan blade 7 rotates under the influence of wind. During the rotation of the first fan blade 7, it drives the transmission belt 10 to rotate. When the transmission belt 10 rotates, it drives the second fan blade 9 to rotate. When the second fan blade 9 rotates, it sends the air inside the air outlet pipe 3 outwards, thereby realizing simultaneous air supply and exhaust;

[0031] On one side inside the air outlet pipe 3, a fixing seat 12 is fixedly installed. Inside the fixing seat 12, a filter membrane 13 is fixedly installed. During the exhaust process, since there is more dust in the air in the well, the dust can be filtered through the filter membrane 13 to prevent the dust from accumulating on the fan blade and affecting its working efficiency;

[0032] The connecting pipe 2 is fixedly installed between the air inlet pipe 1 and the air outlet pipe 3. When the first axial flow fan 4 fails, the second axial flow fan 5 is started. According to the above principle, it drives the first fan blade 7 and the second fan blade 9 to rotate respectively, and also realizes simultaneous air supply and exhaust, which is convenient for quickly restoring the ventilation in the well when the fan fails.

[0033] Working principle:

[0034] When ventilation is required inside the mine, the first axial flow fan 4 is started. The first axial flow fan 4 generates wind that blows towards the air inlet pipe 1 and then enters the mine through the air inlet pipe 1, thereby blowing fresh air into the mine. During this process, the first fan blade 7 rotates under the influence of the wind. During the rotation of the first fan blade 7, it drives the conveyor belt 10 to rotate. When the conveyor belt 10 rotates, it drives the second fan blade 9 to rotate. When the second fan blade 9 rotates, it sends the air in the air outlet pipe 3 outwards, thereby realizing simultaneous air supply and exhaust. When the first axial flow fan 4 fails, the second axial flow fan 5 is started to drive the first fan blade 7 and the second fan blade 9 to rotate respectively according to the above principle, and also realizes simultaneous air supply and exhaust, which is convenient for quickly restoring the ventilation in the mine when the fan fails.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A mine ventilation and air-increasing device, characterized in that: include: An air inlet pipe (1), a first axial flow fan (4) being fixedly mounted on the left side thereof, a first fixing frame (6) being fixedly mounted on one side inside the air inlet pipe (1), and a first fan blade (7) being rotatably connected inside the first fixing frame (6); An air outlet pipe (3), a second axial flow fan (5) is fixedly installed on the left side thereof, a second fixing frame (8) is fixedly installed on one side inside the air outlet pipe (3), a second fan blade (9) is rotatably connected inside the second fixing frame (8), and a transmission belt (10) is provided between the first fan blade (7) and the second fan blade (9); The connecting pipe (2) is fixedly installed between the air inlet pipe (1) and the air outlet pipe (3).

2. A mine ventilation and air-increasing equipment as claimed in claim 1, characterized in that: The air outlet pipe (3) and the first axial flow fan (4) are oriented in opposite directions, and the first fan blade (7) and the second fan blade (9) are oriented in opposite directions.

3. A mine ventilation and air-increasing equipment as claimed in claim 1, characterized in that: A protrusion (11) is provided at the middle end of the air inlet pipe (1).

4. A mine ventilation and air-increasing equipment as claimed in claim 1, characterized in that: A fixing seat (12) is fixedly mounted on one side of the air outlet pipe (3), and a filter membrane (13) is fixedly mounted inside the fixing seat (12).

5. A mine ventilation and air-increasing equipment as claimed in claim 1, characterized in that: A protective net (14) is fixedly mounted on the right inner walls of the air inlet pipe (1) and the air outlet pipe (3).

6. A mine ventilation and air-increasing equipment as claimed in claim 1, characterized in that: A locking seat (15) is fixedly mounted on the bottom of each of the first axial flow fan (4) and the second axial flow fan (5).

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