Mine main fan machine room cooling and dust filtering device

Abstract

The invention discloses a cooling and dust filtering device for a mine main fan machine room, belongs to the technical field of mine production, and solves the problems that an existing mine main fan machine room is poor in heat dissipation effect, main fan operation efficiency is affected, and mine production efficiency is affected. The device comprises a frequency conversion cabinet and a main fan machine room, the top of the frequency conversion cabinet is provided with a cabinet top fan and an air outlet, the main fan machine room is provided with an air exhaust pipeline and an air inlet dust filtering pipe, one end of the air exhaust pipeline is communicated with the air inlet, the cabinet top fan is installed at one end of the air exhaust pipeline, and a filter screen is installed in the air inlet dust filtering pipe. The system is stable in operation, the environment temperature in the main fan machine room is effectively reduced, safe and stable operation of electrical equipment in the machine room is guaranteed, the influence of continuous high temperature on safe operation of the electrical equipment in the machine room is avoided, a mine main fan can work normally, efficient and stable operation of the main fan is guaranteed, and the system has high popularization value.

Description

Technical Field

[0001] The invention belongs to the technical field of mine production, and in particular relates to a cooling and dust filtering device for a mine main fan room. Background Art

[0002] The mine main fan is an important part of the mine production system. It is responsible for delivering fresh air to the underground and exhausting harmful gases and dust, ensuring the safe production of the mine and the safety of miners' lives. It is a necessary device for mine production.

[0003] At present, in production, the main fan of the mine needs to run 24 hours a day, which will generate a lot of heat in the machine room. The original heat dissipation structure design of the main fan machine room is unreasonable. Only the cabinet top fan of the frequency conversion cabinet is extracted to dissipate heat and cool down. The heat discharged by the cabinet top fan gathers and circulates in the machine room and cannot be effectively discharged to the outside, resulting in high temperatures in the machine room and the frequency conversion cabinet. In daily production, the temperature in the frequency converter cabinet is as high as 60℃. Although 8 5-horsepower high-power air conditioners are installed in the machine room and run continuously to cool down, the cooling effect is not good. The temperature in the frequency converter cabinet reaches about 50℃, which still cannot completely solve the heat dissipation problem. In addition, the long-term operation of multiple high-power air conditioners generates high energy consumption. Due to the high temperature in the machine room and the frequency conversion cabinet, there are hidden dangers in the safe and stable operation of electrical equipment such as the frequency conversion power unit, high-voltage switch cabinet, and transformer, which affects the operating stability of the main fan frequency conversion control system, and then affects the operating efficiency of the main fan. The underground ventilation system security rate decreases accordingly, the production safety security coefficient decreases, and a large amount of manpower and material costs will be increased in equipment maintenance and repair operations. Summary of the invention

[0004] The invention provides a cooling and dust filtering device for a mine main fan room, so as to solve the problem that the existing mine main fan room has poor heat dissipation effect, affects the main fan operation efficiency, and affects the mine production efficiency.

[0005] The technical solution of the present invention is: a cooling and dust filtering device for a mine main fan room, comprising a frequency conversion cabinet and a main fan room, a cabinet top fan and an exhaust port are arranged on the top of the frequency conversion cabinet, an exhaust duct and an air inlet dust filter pipe are arranged on the main fan room, one end of the exhaust duct is connected to the air inlet, the cabinet top fan is installed at one end of the exhaust duct, and a filter is installed in the air inlet dust filter pipe.

[0006] As a further improvement of the present invention, an adjustable baffle is provided on the air inlet, and an adjustable skylight is provided at the air outlet where the exhaust duct is connected to the main fan room.

[0007] As a further improvement of the present invention, a plurality of slots are provided in the air inlet dust filter pipe, and the filter screens are installed in the slots.

[0008] As a further improvement of the present invention, an air inlet cover is provided at the air inlet of the air inlet dust filter pipe, and whether air is allowed to enter can be controlled by the air inlet cover.

[0009] As a further improvement of the present invention, a sealing rubber ring is provided at the connection between the air inlet dust filter pipe and the main fan room.

[0010] As a further improvement of the present invention, a sealing rubber ring is provided at the connection between the exhaust duct and the main fan room.

[0011] The beneficial effects of the present invention are: 1. The present invention relies on the original frequency conversion cabinet top fan to form a negative pressure area in the exhaust duct when it is running, so that the air in the machine room flows to the negative pressure area, and the air is supplemented from the air inlet dust filter pipe to achieve the natural circulation effect of the air in the main fan machine room, complete the heat dissipation of the main fan machine room, and at the same time install a filter net at the air inlet to effectively filter the dust and impurities in the wind source.

[0012] 2. The present invention realizes two cooling modes of internal circulation and direct discharge in the main fan room by installing an adjustable baffle at the air outlet of the machine room and an adjustable skylight of the exhaust duct. When the temperature is low, the adjustable skylight of the exhaust duct is opened, and the adjustable baffle of the air outlet of the machine room is closed, so that negative pressure accelerates the internal circulation of heat in the main fan room; when the temperature is high, the adjustable baffle of the air outlet of the machine room is opened, and the adjustable skylight of the exhaust duct is closed, so that the hot air in the main fan room is directly discharged, and different indoor and outdoor emission ratios are achieved by adjusting the size of the switch, forming a dual-circuit heat dissipation system in the main fan room, effectively reducing the indoor temperature of the main fan room and the frequency conversion cabinet. The temperature of the machine room is reliably and stably between 25-30°C, and the temperature of the frequency conversion cabinet does not exceed 45°C, thereby ensuring the safe and stable operation of the electrical equipment in the machine room and avoiding the impact of continuous high temperature on the safe operation of the electrical equipment in the machine room.

[0013] 3. The present invention also adopts a plug-in filter, which is easy to disassemble and clean the dust on the filter and replace it as a whole during later use. The dust entering the machine room is reduced by more than 90%, ensuring the safe operation of electrical equipment in the main fan room and reducing the workload of manual dust removal. The present invention operates stably, effectively reduces the ambient temperature in the main fan room, avoids affecting the normal operation of the main fan, ensures the efficient and stable operation of the main fan, and has strong promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the filtering mechanism structure of the present invention.

[0015] In the figure: 1- frequency conversion cabinet; 2- air inlet cover; 3- cabinet top fan; 4- air inlet; 5- exhaust duct; 8- air inlet dust filter pipe; 9- filter screen; 10- slot. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] like Figure 1-2 As shown, a cooling and dust filtering device for a main fan room of a mine comprises a frequency conversion cabinet 1 and a main fan room. A cabinet top fan 3 and an exhaust port 4 are arranged on the top of the frequency conversion cabinet 1.

[0018] A cooling and dust filtering device for a main fan room of a mine, wherein an exhaust duct 5 and an air inlet dust filter pipe 8 are arranged on the main fan room, one end of the exhaust duct 5 is communicated with an air inlet 4, the cabinet top fan 3 is installed at one end of the exhaust duct 5, and a filter screen 9 is installed in the air inlet dust filter pipe 8.

[0019] An adjustable baffle is provided on the air inlet 4, and an adjustable skylight is provided at the air outlet 6 where the exhaust duct 5 is connected to the main fan room.

[0020] A plurality of slots 10 are provided in the air inlet dust filter pipe 8 , and the filter screens 9 are installed in the slots 10 .

[0021] An air inlet cover plate 2 is provided at the air inlet of the air inlet dust filter pipe 8, and whether air is allowed to enter can be controlled by the air inlet cover plate 2.

[0022] A sealing rubber ring is provided at the connection between the air inlet dust filter pipe 8 and the main fan room.

[0023] A sealing rubber ring is provided at the connection between the exhaust duct 5 and the main fan room.

[0024] In the daily operation of the main fan, when the temperature in the main fan room is too high, the adjustable skylight of the exhaust duct 5 and the adjustable baffle of the air outlet 6 are opened, and the frequency conversion cabinet 1 and the cabinet top fan 3 work, and the negative pressure generated in the exhaust duct 5 causes the air in the main fan room to flow to the negative pressure area, and the cabinet top fan 3 directly discharges the hot air in the main fan room, and the air inlet cover 2 is opened simultaneously, so that the air with lower outdoor temperature enters the main fan room through the air inlet pipe 8 due to the negative pressure, and the air is filtered through the filter 9, so that the amount of dust in the air entering the main fan room is reduced by more than 90%, thereby ensuring the safe operation of the electrical equipment in the main fan room and reducing the workload of manual dust removal of the electrical equipment in the room.

Claims

1. A cooling and dust filtering device for a main fan room of a mine, comprising a frequency conversion cabinet (1) and a main fan room, wherein a cabinet top fan (3) and an exhaust port (4) are arranged on the top of the frequency conversion cabinet (1), and the device is characterized in that: The main fan room is provided with an exhaust duct (5) and an air inlet dust filter pipe (8), one end of the exhaust duct (5) is connected to the air inlet (4), the cabinet top fan (3) is installed at one end of the exhaust duct (5), and a filter screen (9) is installed in the air inlet dust filter pipe (8).

2. A cooling and dust filtering device for a mine main fan room according to claim 1, characterized in that: An adjustable baffle is provided on the air inlet (4), and an adjustable skylight is provided at the air outlet (6) where the exhaust duct (5) is connected to the main fan room.

3. A cooling and dust filtering device for a mine main fan room according to claim 1, characterized in that: The side wall of the air inlet dust filter pipe (8) is provided with a slot (10), and the filter screen (9) is installed in the slot (10).

4. A cooling and dust filtering device for a mine main fan room according to any one of claims 1 to 3, characterized in that: An air inlet cover plate (2) is provided at the air inlet of the air inlet dust filter pipe (8).

5. A cooling and dust filtering device for a mine main fan room according to claim 4, characterized in that: A sealing rubber ring is provided at the connection between the air inlet dust filter pipe (8) and the main fan room.

6. A cooling and dust filtering device for a mine main fan room according to claim 4, characterized in that: A sealing rubber ring is provided at the connection between the exhaust duct (5) and the main fan room.

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