Simple dry-type dust removal device for coal mine
By designing a simple dry dust removal device, using the combination of negative pressure axial flow fan and dust filter bags, the problem of waste and processing difficulties of wet dust removal device is solved, and the recycling of coal powder and the convenience of underground use is achieved.
Patent Information
- Application Number
- CN202421350943.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-06-13
AI Technical Summary
The existing wet dust removal device for coal mines requires the consumption of clean water, producing coal slime water containing coal dust, resulting in waste of resources and difficult handling.
A simple dry dust removal device for coal mines was designed, using a negative pressure axial flow fan and a dust filter bag. Air and coal dust are sucked in through negative pressure, and coal powder is accumulated in the dust filter bag and taken down and recycled. The device has a simple structure and small size. , suitable for underground use.
It realizes dust removal without sewage, and the resource recycling is easy to produce, move and use, and is suitable for dust removal in coal mine tunnels.
Smart Images
Figure CN222131279U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a simple dry dust removal device for coal mines. Background Art
[0002] The Chinese invention patent application published on December 23, 2015 with publication number CN 105179003 A discloses a novel wet dust collector for mining, including a frame, a fan, a dust collector housing, a filter tank and bolts, wherein an elbow is provided at one end of the fan, a sewage outlet is provided at the bottom of the dust collector housing, an atomizing nozzle device, a dust catching mesh plate, a first mounting plate, a water-gas separation plate group and a second mounting plate are provided in sequence inside the dust collector housing from the fan to the air outlet, a high-pressure water pipe is provided on the filter tank, and one end of the high-pressure water pipe is connected to the atomizing nozzle device.
[0003] The Chinese invention patent application published on March 16, 2021 and with publication number CN 112502767 A discloses a dust reduction and ventilation device for coal mining, including a mobile base, an adjustment bracket and a dust treatment mechanism, wherein the adjustment bracket is mounted on the mobile base, the dust treatment mechanism is mounted on the adjustment bracket, and the dust treatment mechanism consists of a main tube, an atomization dust reduction structure, a filtering treatment structure and an air collection and ventilation system.
[0004] The invention has a simple structure, convenient operation, and flexible deployment. The mobile chassis with a wheeled structure is used for the mobile dust reduction and ventilation device, which is convenient for deployment in the mine.
[0005] Ventilation and dust reduction treatment is carried out in local areas of the mine. While dust is removed by the atomization principle, the dust is subjected to secondary filtration treatment through the internal filtration treatment structure.
[0006] The dust removal and dust reduction devices disclosed in the above two inventions and the existing wet dust removal devices all consume clean water during operation and produce coal slurry water containing coal dust. The coal slurry water is inconvenient to handle and transport, and wastes coal powder resources.
[0007] The Chinese utility model patent authorized on September 11, 2020, with the authorization announcement number CN 211462447 U, discloses a composite flat bag dust collector, including a filter chamber, a dust suction pipe is installed on one side of the filter chamber, a ventilation chamber is installed on the top of the filter chamber, a connecting pipe is installed on one side wall of the ventilation chamber, an oblique pipe is installed on one end of the connecting pipe, a guide cover is installed on one end of the oblique pipe, an axial flow fan is installed on one end of the guide cover, a partition is slidably connected to the inside of the filter chamber, and springs are symmetrically fixed on the top and bottom of the partition. This utility model is large in size and complex in structure, and is inconvenient to move and use underground. Summary of the invention
[0008] The technical problem to be solved by the utility model is how to overcome the above-mentioned defects of the prior art and provide a simple dry dust removal device for coal mines which is easy to manufacture, move and use.
[0009] In order to solve the above technical problems, the simple dry dust removal device for coal mines includes a negative pressure axial flow fan, which includes a cylindrical shell and a fan body, characterized in that: it also includes a dust filter bag and a tether, the cylindrical shell is vertically arranged, its air inlet is upward, its air outlet is downward, and the cylindrical shell is also connected to an upper cylinder, the dust filter bag is arranged in the upper cylinder, the bag mouth of the dust filter bag is buckled on the upper mouth of the upper cylinder, and is tied and fixed on the upper cylinder by a tether, a spacer net is arranged between the dust filter bag and the fan body, and a leg or a bracket is connected to the upper part of the cylindrical shell. The dust filter bag can be made of non-woven fabric for filtering (see CN111841148A), the negative pressure axial flow fan can be a small negative pressure axial flow fan commonly used underground, and the spacer net can be made of stainless steel net.
[0010] When in use, place the simple dry dust removal device for coal mines on the underground tunnel or working surface floor to be dusted, and then start the negative pressure axial flow fan. The negative pressure axial flow fan sucks the air above it together with the coal dust and coal powder through the upper cylinder. The coal dust and coal powder are filtered out and remain in the dust filter bag. Clean air is discharged from the air outlet of the negative pressure axial flow fan. Figure 1 When the coal dust accumulated in the dust filter bag reaches a certain amount, untie the rope, remove the dust filter bag together with the coal dust inside, and tie the bag mouth tightly with the rope, as shown in the figure. Figure 3 As shown, the dust is then stored and transported to the well for use as fuel. Then, another new dust filter bag is installed on the upper cylinder of the simple dry dust removal device for coal mines, and it can continue to be used.
[0011] Such a design has a simple structure, a small volume, is easy to manufacture, move and use, and is convenient for recycling coal powder resources.
[0012] As an optimization, an inner concave annular groove is provided on the outer circumference of the upper part of the upper cylinder, and the bag opening of the dust filter bag is buckled and covers the inner concave annular groove and is tied and fixed by the tether. Figure 1 With this design, the tether is firmly tied and not easy to get loose.
[0013] As an optimization, the bag opening of the dust filter bag is provided with a double-layer rope loop bag, which has two adjacent rope holes, and the tether is inserted into the double-layer rope loop bag, and its two ends are respectively passed through the two rope holes. With such a design, when the dust filter bag needs to be tied, just hold the two ends of the tether tightly, and then tie it into a loose or fixed knot.
[0014] As an optimization, the bag opening of the dust filter bag is provided with a thickened edge, and a plurality of rope threading holes are opened on the thickened edge. The two ends of the tether repeatedly pass through the above-mentioned rope threading holes and finally pass through two adjacent rope threading holes. With this design, when the dust filter bag needs to be tied, just hold the two ends of the tether tightly and then tie it into a loose buckle or a fixed buckle, which is convenient for processing and tying the tether.
[0015] As an optimization, the air outlet of the cylindrical shell is also connected to a right-angle elbow pipe. With this design, the clean air discharged from the air outlet of the negative pressure axial flow fan is blown out in a horizontal direction through the right-angle elbow pipe, preventing the wind from blowing downwards and blowing up dust on the bottom plate of the tunnel or working surface, affecting the dust removal effect, and keeping the air clean to the greatest extent.
[0016] The utility model discloses a simple dry dust removal device for coal mines, which has the advantages of small size, simple structure, convenient manufacture, movement and use, no sewage generation, convenient recycling of coal dust and coal powder and suitable for dust removal in coal mine tunnels or working faces. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The following is a further description of the utility model of a simple dry dust removal device for coal mines in conjunction with the accompanying drawings:
[0018] Figure 1 This is a three-dimensional structural schematic diagram of the first implementation mode of the simple dry dust removal device for coal mines;
[0019] Figure 2 yes Figure 1 The schematic diagram of the dust filter bag shown is tied with a rope (filled with coal powder);
[0020] Figure 3 This is a three-dimensional structural schematic diagram of the second implementation mode of the simple dry dust removal device for coal mines;
[0021] Figure 4 It is a three-dimensional schematic diagram of a dust filter bag in the third implementation mode of the simple dry dust removal device for coal mines;
[0022] Figure 5 It is a three-dimensional schematic diagram of a dust filter bag in the fourth embodiment of the simple dry dust removal device for coal mines;
[0023] Figure 6 Yes Figure 4 The dust filter bag shown is placed on Figure 1 Schematic diagram on the upper tube shown.
[0024] In the figure: 1 is a cylindrical shell, 2 is a fan body, 3 is a dust filter bag, 31 is a double-layer rope loop bag, 32 is a rope hole, 33 is a thickened edge, 4 is a tether, 5 is an upper cylinder, 6 is a spacer net, 7 is a support leg or a bracket, 8 is an inner concave ring groove, and 9 is a right-angle elbow pipe. DETAILED DESCRIPTION
[0025] Implementation method 1: Figure 1-2 As shown, the simple dry dust removal device for coal mines includes a negative pressure axial flow fan, which includes a cylindrical shell 1 and a fan body 2, and is characterized in that: it also includes a dust filter bag 3 and a tether 4, the cylindrical shell 1 is vertically arranged, its air inlet is upward, and its air outlet is downward, and the cylindrical shell 1 is also connected to an upper cylinder 5, the dust filter bag 3 is arranged in the upper cylinder 5, the bag mouth of the dust filter bag 3 is flipped on the upper mouth of the upper cylinder 5, and is tied and fixed to the upper cylinder 5 by the tether 4, a spacing net 6 is provided between the dust filter bag 3 and the fan body 2, and a support leg or bracket 7 is connected to the upper part of the cylindrical shell 1.
[0026] An inner concave annular groove 8 is provided on the outer circumference of the upper part of the upper cylinder 5 , and the bag opening of the dust filter bag 3 is buckled and covers the inner concave annular groove 8 and is tied and fixed by the tether 4 .
[0027] Implementation method 2: Figure 3 As shown, the air outlet of the cylindrical shell 1 is also connected to a right-angle elbow pipe 9, and the remaining structures are as described in the first embodiment and are omitted.
[0028] Implementation method three: Figure 4 As shown, the bag opening of the dust filter bag 3 is provided with a double-layer rope loop bag 31, and the double-layer rope loop bag 31 is provided with two adjacent rope holes 32. The tether 4 is inserted into the double-layer rope loop bag 31, and the two ends of the tether 4 are respectively passed through the two rope holes 32. The remaining structure is as described in the first embodiment and is omitted.
[0029] When installing the dust filter bag 3, the bag opening of the dust filter bag 3 can be firstly put on the upper cylinder 5, and the tether 4 is just in the concave annular groove 8, such as Figure 6 As shown, the two ends of the tether 4 are then tightened and tied, and finally, the bottom of the dust filter bag 3 is inserted into the upper cylinder.
[0030] Implementation method 4: Figure 5 As shown, the bag opening of the dust filter bag 3 is provided with a thickened edge 33, and a plurality of rope threading holes 32 are opened on the thickened edge 33. The two ends of the tether 4 repeatedly pass through and out of the above-mentioned rope threading holes 32, and finally pass through two adjacent rope threading holes 32. The remaining structure is as described in the third embodiment and is omitted.
Claims
1. A simple dry dust removal device for coal mines, comprising a negative pressure axial flow fan, the negative pressure axial flow fan comprising a cylindrical shell and a fan body, characterized in that: It also includes a dust filter bag and a tether. The cylindrical shell is vertically arranged with its air inlet facing upward and its air outlet facing downward. The cylindrical shell is also connected to an upper cylinder. The dust filter bag is arranged in the upper cylinder. The bag opening of the dust filter bag is flipped over the upper opening of the upper cylinder and is fixed to the upper cylinder by a tether. A spacing net is provided between the dust filter bag and the fan body. A leg or bracket is connected to the upper part of the cylindrical shell.
2. The simple dry dust removal device for coal mines according to claim 1 is characterized in that: An inner concave annular groove is arranged on the outer circumference of the upper part of the upper cylinder, and the bag opening of the dust filter bag is buckled and covers the inner concave annular groove and is tied and fixed by the tether.
3. The simple dry dust removal device for coal mines according to claim 1 is characterized in that: The bag opening of the dust filter bag is provided with a double-layer rope loop bag, which has two adjacent rope holes. The tether is inserted in the double-layer rope loop bag, and its two ends are respectively passed through the two rope holes.
4. The simple dry dust removal device for coal mines according to claim 1 is characterized in that: The bag opening of the dust filter bag is provided with a thickened edge, and a plurality of rope threading holes are opened on the thickened edge. The two ends of the tether repeatedly pass in and out of the rope threading holes, and finally pass out from two adjacent rope threading holes.
5. The simple dry dust removal device for coal mines according to any one of claims 1 to 4, characterized in that: The air outlet of the cylindrical shell is also connected with a right-angle elbow pipe.