Metal and nonmetal mine underground portable dust removal device

Abstract

The utility model discloses a metal non-metal mine underground portable dust removal device, which comprises a mounting rack and two exhaust fan sets, an air inlet pipe penetrates between the tops of the opposite sides of the inner wall of the mounting rack, a bent air outlet pipe penetrates between the bottoms of the opposite sides of the inner wall of the mounting rack, one end of the air inlet pipe is communicated with an air inlet hopper, and the other end of the air inlet hopper is communicated with an air outlet pipe. Compared with the prior art, the utility model has the following beneficial effects: the diameter of the air outlet of the air outlet hopper is greater than that of the air outlet of the bent air outlet pipe, so that the diameter of the buffer cover is greater than that of the air outlet of the bent air outlet pipe; when the air outlet hopper is used for discharging air, the air can be directly blown to the arc-shaped convex surface of the buffer cover, so that the air can be buffered, the air flow is dispersed, and the dispersed air flow is uniformly discharged through the air outlet holes in the buffer cover, so that the air force of the air outlet hopper for discharging the air is reduced, and reentrainment of dust generated in a mine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mine dust removal equipment, in particular to a portable dust removal device for metal and non-metal mines. Background Art

[0002] In the process of tunneling in metal and non-metal mines, due to the high solidity coefficient of the rock mass, blasting is usually used for tunneling operations. The blasting method is usually used to excavate about three meters per shift. Most of the excavation working faces of metal and non-metal mines are dead-end tunnels. Blasting excavation is prone to produce a lot of dust, so dust removal work is required in the mine tunnels.

[0003] In the prior art, dust removal is performed inside mine tunnels by using an exhaust fan to adopt negative pressure dust suction and filtration. However, a large amount of airflow after negative pressure dust suction and filtration is directly discharged from the exhaust pipe, causing the airflow to directly impact the inner wall of the mine tunnel, thereby generating a large amount of secondary dust, reducing the dust removal effect and efficiency of the mine tunnel. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a portable dust removal device for underground metal and non-metal mines, so as to solve the problem proposed in the above background technology that the directly discharged airflow impacts the mine tunnel to generate a large amount of secondary dust, thereby reducing the dust removal effect and efficiency of the mine tunnel.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a portable dust removal device for underground metal and non-metal mines, comprising a mounting frame and two exhaust fan units, an air inlet pipe penetrates between the tops on the opposite sides of the inner wall of the mounting frame, a bent air outlet pipe penetrates between the bottoms on the opposite sides of the inner wall of the mounting frame, one end of the air inlet pipe is connected to an air inlet scoop, a metal cover net is fixedly installed at the air inlet of the air inlet scoop, the bent air outlet duct is connected to the air outlet scoop, a buffer cover is fixedly connected to the air outlet of the air outlet scoop, a double dust filter assembly is connected between the other end of the air inlet duct and the other end of the bent air outlet duct, the two exhaust fan units are respectively arranged on both sides of the inner pipe surface of the air inlet duct, and a handle is fixedly connected to the top of the mounting frame.

[0006] Furthermore, a plurality of air outlet holes are evenly arranged between two sides of the buffer cover, and the buffer cover is in the shape of an arc hemispherical shell.

[0007] Furthermore, the convex surface of the buffer cover faces the air outlet of the bent air outlet pipe, and the concave surface of the buffer cover faces the air outlet of the air outlet scoop.

[0008] Furthermore, the bent air outlet pipe is in the shape of a double right-angle bent pipe, and the direction of the air outlet of the bent air outlet pipe is opposite to the direction of the air inlet of the air inlet pipe.

[0009] Furthermore, the double dust filter assembly includes two right-angle tubes and six fixing rings. A stainless steel filter screen is fixedly sleeved at the bends on the inner tube surfaces of the two right-angle tubes. The six fixing rings are respectively sleeved on both ends of the two right-angle tubes, the other end of the air inlet tube and the other end of the bent air outlet tube. The two right-angle tubes are respectively installed on the other end of the air inlet tube and the other end of the bent air outlet tube through fixing rings. The fixing rings at the adjacent ends of the two right-angle tubes are spliced ​​with each other. Sealing rubber rings are sleeved on the pipe connection ports of the air inlet tube, the two right-angle tubes and the bent air outlet tube, and a plurality of fastening bolts are passed through the two sides of each two spliced ​​fixing rings.

[0010] Furthermore, the exhaust unit includes a mounting ring sleeve, which is sleeved inside the air inlet pipe, and a connecting plate is fixedly connected between two sides of the inner wall of the mounting ring sleeve, and an electric fan is fixedly connected to one side of the connecting plate.

[0011] Furthermore, the mounting ring is fixedly connected to the air inlet pipe, and both ends of the mounting ring are communicated with the interior of the air inlet pipe.

[0012] Beneficial Effects

[0013] 1. The utility model makes the diameter of the air outlet of the air outlet scoop larger than the diameter of the air outlet on the bent air outlet pipe, so that the diameter of the buffer cover is larger than the diameter of the air outlet of the bent air outlet pipe. When the filtered air is discharged from the air outlet of the bent air outlet pipe, it will be directly blown to the arc-shaped convex surface of the buffer cover, so that the wind force can be buffered and the airflow is dispersed. The dispersed airflow is evenly discharged through the air outlet holes on the buffer cover, thereby reducing the wind force of the air discharged from the air outlet scoop and reducing the secondary dust generated inside the mine.

[0014] 2. The bent air outlet duct of the utility model is in the shape of a double right-angle bent tube. The outlet direction of the bent air outlet duct is opposite to the air inlet direction of the air inlet duct, so that the air outlet of the bent air outlet duct does not discharge air toward the ground, thereby avoiding secondary dust. At the same time, the clean airflow discharged from the bent air outlet duct will not interfere with the airflow sucked in at the air inlet of the air inlet duct, thereby ensuring that the air inlet of the air inlet duct can extract and remove a large amount of dust inside the mine along with the air, effectively improving the dust removal efficiency inside the mine.

[0015] 3. The utility model can lift the device as a whole by holding a handle, thereby improving the portability of the device as a whole, and can double filter the metal dust in the air through the two stainless steel filters inside the double dust filter assembly, effectively improving the dust removal effect, and the two right-angle tubes can be removed from the port connection of the air inlet pipe and the bent air outlet pipe by removing the fastening bolts on each fixing ring, and the two connected right-angle tubes can be dismantled, so that the metal dust at the filter inside the two right-angle tubes can be centrally recovered and cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural stereogram of a portable dust removal device for metal and non-metal mines in the utility model;

[0017] Figure 2 This is a schematic front view of the structure of a portable dust removal device for metal and non-metal mines in the utility model;

[0018] Figure 3 This is a schematic main cross-sectional view of the structure of a portable dust removal device for metal and non-metal mines in the utility model;

[0019] Figure 4 for Figure 3 A schematic side view of the structure of the metal cover mesh shown;

[0020] Figure 5 for Figure 3 A schematic side view of the structure of the buffer cover shown;

[0021] Figure 6 for Figure 3 A schematic side view of the structure of the exhaust fan unit is shown.

[0022] In the figure: 1. mounting frame; 2. air inlet pipe; 3. bent air outlet pipe; 4. air inlet hopper; 5. metal cover net; 6. air outlet hopper; 7. buffer cover; 8. double dust filter assembly; 9. exhaust unit; 10. handle; 81. right angle pipe; 82. stainless steel filter net; 83. fixing ring; 84. sealing rubber ring; 85. fastening bolt; 91. mounting ring sleeve; 92. connecting plate; 93. electric fan. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.

[0024] Example 1. A portable dust removal device for metal and non-metal mines, see Figure 1-6, including a mounting frame 1 and two exhaust fan units 9, an air inlet pipe 2 runs through the top of the opposite side of the inner wall of the mounting frame 1, a bent air outlet pipe 3 runs through the bottom of the opposite side of the inner wall of the mounting frame 1, one end of the air inlet pipe 2 is connected with an air inlet hopper 4, a metal cover net 5 is fixedly installed at the air inlet of the air inlet hopper 4, the metal cover net 5 can block external large-volume objects to ensure that the air inlet pipe 2 only extracts air containing metal dust, the bent air outlet pipe 3 is connected with an air outlet hopper 6, a buffer cover 7 is fixedly connected at the air outlet of the air outlet hopper 6, a double dust filter assembly 8 is connected between the other end of the air inlet pipe 2 and the other end of the bent air outlet pipe 3, the two exhaust fan units 9 are respectively sleeved on both sides of the inner pipe surface of the air inlet pipe 2, and a handle 10 is fixedly connected to the top of the mounting frame 1. The handle 10 is convenient for the handheld device to perform dust removal as a whole, thereby effectively improving the portability of the dust removal device.

[0025] See also Figure 3-6 A plurality of air outlet holes are evenly arranged between the two sides of the buffer cover 7. The buffer cover 7 is in the shape of an arc hemispherical shell. The convex surface of the buffer cover 7 faces the air outlet of the bent air outlet pipe 3, and the inner concave surface of the buffer cover 7 faces the air outlet of the air outlet scoop 6. The air outlet diameter of the air outlet scoop 6 is larger than the air outlet diameter on the bent air outlet pipe 3, so that the diameter of the buffer cover 7 is larger than the air outlet diameter of the bent air outlet pipe 3. When the filtered air is discharged from the air outlet of the bent air outlet pipe 3, it will be directly blown to the arc-shaped convex surface of the buffer cover 7, so that the wind force can be buffered and the airflow can be divided. The dispersed air flow is evenly discharged through the air outlet holes on the buffer cover 7. The bent air outlet pipe 3 is in a double right-angle bent tube shape. The air outlet direction of the bent air outlet pipe 3 is opposite to the air inlet direction of the air inlet pipe 2, so that the air outlet of the bent air outlet pipe 3 does not discharge air toward the ground, thereby avoiding secondary dust. At the same time, the clean airflow discharged from the bent air outlet pipe 3 does not interfere with the airflow sucked in at the air inlet of the air inlet pipe 2, thereby ensuring that the air inlet of the air inlet pipe 2 can extract and remove a large amount of dust inside the mine along with the air, effectively improving the dust removal efficiency inside the mine.

[0026] See also Figure 2-3The double dust filter assembly 8 includes two right-angle tubes 81 and six fixing rings 83. The inner tube surfaces of the two right-angle tubes 81 are fixedly sleeved with a stainless steel filter 82 at the bending parts. The six fixing rings 83 are respectively sleeved on the two ends of the two right-angle tubes 81, the other end of the air inlet pipe 2 and the other end of the bent air outlet pipe 3. The two right-angle tubes 81 are respectively installed on the other end of the air inlet pipe 2 and the other end of the bent air outlet pipe 3 through the fixing rings 83. The fixing rings 83 at the adjacent ends of the two right-angle tubes 81 are spliced ​​with each other. The air inlet pipe 2, the two right-angle tubes 81 and the bent air outlet pipe 3 are connected. Sealing rubber rings 84 are provided at the ports, and the sealing rubber rings 84 can improve the sealing performance of the connection ports of the two right-angle tubes 81, the air inlet pipe 2 and the bent air outlet pipe 3. A plurality of fastening bolts 85 are passed through the two sides of the two spliced ​​fixing rings 83. By removing the fastening bolts 85 on each fixing ring 83, the two right-angle tubes 81 can be removed from the port connection of the air inlet pipe 2 and the bent air outlet pipe 3, and the two connected right-angle tubes 81 can be dismantled, so that the metal dust at the filter inside the two right-angle tubes 81 can be collected and cleaned.

[0027] See also Figure 3 and Figure 6 The exhaust unit 9 includes a mounting ring 91, which is sleeved inside the air inlet pipe 2. A connecting plate 92 is fixedly connected between the two sides of the inner wall of the mounting ring 91, and an electric fan 93 is fixedly connected to one side of the connecting plate 92. A motor is arranged inside the electric fan 93 to drive the fan blades to rotate. The electric fans 93 inside the two exhaust units 9 are connected to an external power supply and are provided with the same power control switch. The stainless steel filters 82 fixed inside the two right-angle tubes 81 are installed in a mirror-symmetrical manner. The mounting ring 91 is fixedly connected to the air inlet pipe 2, and both ends of the mounting ring 91 are connected to the inside of the air inlet pipe 2.

[0028] Specific implementation method: By holding the handle 10, the device is lifted as a whole, and the air inlet of the air inlet hopper 4 is aimed at the dust inside the mine, and the electric fans 93 inside the two exhaust units 9 are started. The fan blades rotate to generate negative pressure inside the air inlet pipe 2, so that the dusty air inside the mine can be extracted from the air inlet of the air inlet hopper 4, and transported from the inside of the air inlet pipe 2 to the two right-angle tubes 81 of the double dust filter assembly 8 in turn, and the metal dust in the air is double-filtered from the two stainless steel filter meshes 82 in turn, and the filtered metal dust is retained in the two right-angle tubes 81, and the filtered air is transported to the inside of the bent air outlet pipe 3.

[0029] The diameter of the air outlet of the air outlet scoop 6 is larger than the diameter of the air outlet on the bent air outlet pipe 3, so that the diameter of the buffer cover 7 is larger than the diameter of the air outlet of the bent air outlet pipe 3. When the filtered air is discharged from the air outlet of the bent air outlet pipe 3, it will be directly blown to the arc-shaped convex surface of the buffer cover 7, so that the wind force can be buffered and the airflow can be dispersed. The dispersed airflow is evenly discharged through the air outlet holes on the buffer cover 7, thereby reducing the wind force of the air discharged by the air outlet scoop 6 and reducing the secondary dust generated inside the mine.

[0030] The bent air outlet pipe 3 is in the shape of a double right-angle bent tube, and the air outlet of the bent air outlet pipe 3 is in the opposite direction to the air inlet of the air inlet pipe 2, so that the air outlet of the bent air outlet pipe 3 does not discharge air toward the ground, thereby avoiding secondary dust. At the same time, the clean airflow discharged from the bent air outlet pipe 3 will not interfere with the airflow sucked in at the air inlet of the air inlet pipe 2, thereby ensuring that the air inlet of the air inlet pipe 2 can extract and remove a large amount of dust inside the mine along with the air, effectively improving the dust removal efficiency inside the mine.

[0031] By removing the fastening bolts 85 on each fixing ring 83, the two right-angle tubes 81 can be removed from the port connection of the air inlet pipe 2 and the bent air outlet pipe 3, and the two connected right-angle tubes 81 can be dismantled, so that the metal dust in the filter inside the two right-angle tubes 81 can be centrally recovered and cleaned.

[0032] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A portable dust removal device for underground metal and non-metal mines, comprising a mounting frame (1) and two exhaust fan units (9), characterized in that: An air inlet pipe (2) is passed through the top of the inner wall of the mounting frame (1) on the opposite side, and a bent air outlet pipe (3) is passed through the bottom of the inner wall of the mounting frame (1) on the opposite side. One end of the air inlet pipe (2) is connected to an air inlet hopper (4), and a metal cover net (5) is fixedly installed at the air inlet of the air inlet hopper (4); the bent air outlet pipe (3) is connected to an air outlet hopper (6), and a buffer cover (7) is fixedly connected to the air outlet of the air outlet hopper (6); a double dust filter assembly (8) is connected between the other end of the air inlet pipe (2) and the other end of the bent air outlet pipe (3), and two exhaust units (9) are respectively sleeved on both sides of the inner pipe surface of the air inlet pipe (2); and a handle (10) is fixedly connected to the top of the mounting frame (1).

2. A portable dust removal device for metal and non-metal mines underground according to claim 1, characterized in that: A plurality of air outlet holes are evenly arranged between the two sides of the buffer cover (7), and the buffer cover (7) is in the shape of an arc hemispherical shell.

3. A portable dust removal device for metal and non-metal mines underground according to claim 1, characterized in that: The convex surface of the buffer cover (7) faces the air outlet of the bent air outlet pipe (3), and the concave surface of the buffer cover (7) faces the air outlet of the air outlet scoop (6).

4. A portable dust removal device for metal and non-metal mines underground according to claim 1, characterized in that: The bent air outlet pipe (3) is in the shape of a double right-angle bent pipe, and the direction of the air outlet of the bent air outlet pipe (3) is opposite to the direction of the air inlet of the air inlet pipe (2).

5. The portable dust removal device for metal and non-metal mines according to claim 1 is characterized by: The double dust filter assembly (8) comprises two right-angle tubes (81) and six fixing rings (83); a stainless steel filter screen (82) is fixedly sleeved at the bend of the inner tube surface of the two right-angle tubes (81); the six fixing rings (83) are sleeved at the two ends of the two right-angle tubes (81), the other end of the air inlet pipe (2) and the other end of the bent air outlet pipe (3); the two right-angle tubes (81) are respectively installed at the other end of the air inlet pipe (2) and the other end of the bent air outlet pipe (3) through the fixing rings (83); the fixing rings (83) at the adjacent ends of the two right-angle tubes (81) are spliced ​​with each other; the pipe connection ports of the air inlet pipe (2), the two right-angle tubes (81) and the bent air outlet pipe (3) are sleeved with sealing rubber rings (84); and a plurality of fastening bolts (85) are passed through the two sides of each two spliced ​​fixing rings (83).

6. A portable dust removal device for metal and non-metal mines underground according to claim 1, characterized in that: The exhaust unit (9) comprises a mounting ring sleeve (91), the mounting ring sleeve (91) being sleeved inside the air inlet pipe (2), a connecting plate (92) being fixedly connected between two sides of the inner wall of the mounting ring sleeve (91), and an electric fan (93) being fixedly connected to one side of the connecting plate (92).

7. A portable dust removal device for metal and non-metal mines underground according to claim 6, characterized in that: The mounting ring sleeve (91) is fixedly connected to the air inlet pipe (2), and both ends of the mounting ring sleeve (91) are connected to the interior of the air inlet pipe (2).

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