Iron removal device of coal slurry rod mill

Abstract

One end of the iron removal device is communicated with a coal slurry mill through a grouting pipeline, and the iron removal device comprises a shell, a plurality of iron removal devices and a plurality of iron removal devices, the scrap iron adsorption channel is made of a magnetic material and is of a funnel-shaped structure, and the cross section of the scrap iron adsorption channel is C-shaped; the scrap iron adsorption channel is fixed above the discharge port of the shell; a rotating blade is coaxially and rotationally connected to the center of the scrap iron adsorption channel; the waste conveying device is arranged on the lateral lower portion of the scrap iron adsorption channel; a feeding port of the waste conveying device is right opposite to the lower portion of a C-shaped notch of the scrap iron adsorption channel. According to the scrap iron adsorption channel with the C-shaped cross section, scrap iron can be pushed out from the notch through rotation of the rotating blades; therefore, under the action of filtering scrap iron in coal slurry, the scrap iron adsorption channel can be cleaned through rotation of the rotating blades on the premise of non-stop manual cleaning, the device can be conveniently and continuously used for a long time, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal slurry rod mills, specifically an iron removal device for coal slurry rod mills. Background Technology

[0002] In existing technology, raw coal in the coal bunker is first processed into qualified coal slurry by a rod mill before being supplied to downstream processes.

[0003] However, in current technologies, most drum screens connect their feed inlets to the coal slurry trough via circular pipes. Iron filings and iron-containing materials from the wear of the mill steel rods cannot be removed. Furthermore, the existing circular pipes connecting the feed inlet to the silo lack iron-removal processes, leading to small amounts of iron entering the low-pressure and high-pressure coal slurry pumps. Shutdown inspections revealed iron filings at the inlets of both pumps, and in severe cases, these filings damaged the diaphragms within the pump chambers. Summary of the Invention

[0004] To address the aforementioned technical problems, this utility model provides an iron removal device for a coal slurry rod mill. By utilizing the combination of an iron filings adsorption device, rotating blades, and a waste conveying device, iron filings in the coal slurry can be filtered out, and the iron filings adsorption device can achieve self-cleaning, thereby solving the problem that existing coal slurry rod mills cannot filter iron filings in coal slurry.

[0005] To achieve the above-mentioned technical objectives, the present invention employs the following technical means:

[0006] An iron removal device for a coal slurry rod mill, one end of which is connected to the coal slurry mill via a grouting pipe, includes:

[0007] case;

[0008] The iron filings adsorption channel is made of magnetic material and is designed in a funnel shape with a C-shaped cross-section. The iron filings adsorption channel is fixed above the discharge port of the housing. A rotating blade is coaxially rotatably connected to the center of the iron filings adsorption channel.

[0009] A waste conveying device is located on the side below the iron filings adsorption channel; the inlet of the waste conveying device is directly below the C-shaped notch of the iron filings adsorption channel, and is used to receive and send out the iron filings scraped down by the rotating blades.

[0010] The rotating blades are made of low-permeability plastic.

[0011] The thickness of the rotating blade is equal to the width of the gap in the iron filings adsorption channel, and is used to seal the gap in the iron filings adsorption channel.

[0012] The top side of the iron filings adsorption channel is fixed inside the housing by bolts.

[0013] The bolts used are non-magnetic bolts.

[0014] The waste conveying device is a screw conveyor.

[0015] Beneficial effects:

[0016] This application employs a C-shaped iron filings adsorption channel. After the iron filings are drawn out from the coal slurry, the rotating blades push the attached iron filings out of the notch. Thus, this application can not only filter iron filings in the coal slurry, but also clean the iron filings adsorption channel manually without stopping the machine, facilitating long-term continuous use of the device and improving the machine's working efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the iron removal device of this utility model;

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the iron removal device of this utility model from another perspective;

[0019] Figure 3 A three-dimensional structural diagram of the iron filings adsorption channel and waste conveying device of this utility model;

[0020] Figure 4 A side view showing the combination of the iron filings adsorption channel and the waste conveying device of this utility model;

[0021] Figure 5 A top view showing the combination of the iron filings adsorption channel and the waste conveying device of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the waste conveying device of this utility model.

[0023] In the diagram: 1. Shell; 110. Grouting pipe; 120. Conveying pipe; 2. Iron filings adsorption channel; 210. Rotating blade; 220. Motor; 3. Waste conveying device; 4. Discharge port. Detailed Implementation

[0024] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0025] A schematic diagram of the ice-making equipment of this utility model is shown below. Figure 1-6 As shown.

[0026] See Figure 1-6This utility model provides an iron removal device for a coal slurry rod mill, one end of which is connected to the coal slurry mill through a grouting pipe 110. The device includes: a housing 1; an iron filings adsorption channel 2, made of magnetic material, configured in a funnel shape with a C-shaped cross-section; the iron filings adsorption channel 2 is fixed above the discharge port 4 of the housing 1; a rotating blade 210 is coaxially rotatably connected to the center of the iron filings adsorption channel 2; and a waste conveying device 3, located below the side of the iron filings adsorption channel 2; the inlet of the waste conveying device 3 is directly below the C-shaped notch of the iron filings adsorption channel 2, used to receive and deliver the iron filings scraped down by the rotating blade 210.

[0027] Therefore, when the coal slurry is discharged from the grouting pipe 110 into the iron removal device, the coal slurry flows along the conveying pipe 120 inside the shell 1. When it is discharged to the discharge port 4 of the shell 1, it will pass through the iron filings adsorption channel 2. At this time, the iron filings adsorption channel 2 will adsorb the iron filings in the coal slurry onto the side wall and discharge the filtered coal slurry.

[0028] However, after the iron removal device has been running for a period of time, more and more iron filings will be adsorbed on the iron filings adsorption channel 2, causing blockage of the discharge port 4. At this time, the motor 220 is started to drive the rotating blade 210 to rotate. The rotating blade 210 scrapes the iron filings adsorbed on the wall of the iron filings adsorption channel 2 and mixes them with some of the colloidal coal slurry, pushing them to the gap on the wall of the iron filings adsorption channel 2. When the waste is pushed to the gap, the waste will fall into the waste conveying device 3 below under the action of gravity. After entering through the inlet of the waste conveying device 3, it will be discharged from the iron removal device under the action of the waste conveying device 3. At this time, the wall of the iron filings adsorption channel 2 is cleaned by the rotating blade 210.

[0029] like Figure 2-5 As shown, specifically, the rotating blade 210 is made of low magnetic permeability plastic; thus, when the rotating blade 210 scrapes iron filings to the notch, the iron filings will not adhere to the rotating blade 210, thereby ensuring that the iron filings fall smoothly.

[0030] like Figure 5 As shown, the thickness of the rotating blade 210 is equal to the width of the notch in the iron filings adsorption channel 2, which is used to block the notch in the iron filings adsorption channel 2. Therefore, when the rotating blade 210 is in a stopped state, it can block the notch in the iron filings adsorption channel 2, prevent excessive coal slurry leakage, and improve the efficiency of iron removal from coal slurry.

[0031] Furthermore, the top side of the iron filings adsorption channel 2 is fixed inside the housing 1 by bolts, and the bolts are non-magnetic bolts; thus, when installing or disassembling the iron filings adsorption channel 2, magnetic interference with the bolts can be avoided, preventing them from becoming impossible to install or disassemble.

[0032] See Figure 3-4 In order to quickly transport the waste material mixed with iron filings, the waste material conveying device 3 of this utility model adopts a screw conveyor.

[0033] Working principle:

[0034] First, the coal slurry is discharged from the grouting pipe 110 into the iron removal device. At this time, the coal slurry flows along the conveying pipe 120 inside the shell 1. When the coal slurry is discharged to the discharge port 4 of the shell 1, it will pass through the iron filings adsorption channel 2. At this time, the iron filings adsorption channel 2 will adsorb the iron filings in the coal slurry onto the side wall, and the iron filings in the coal slurry will be filtered out. At this time, the filtered clean coal slurry continues to flow and is finally discharged from the discharge port 4 at the bottom of the shell 1.

[0035] Then, after the iron removal device has been running for a period of time, the motor 220 is started to drive the rotating blade 210 to rotate; at this time, the rotating blade 210 will scrape the iron filings adsorbed on the wall of the iron filings adsorption channel 2 and push them to the gap on the wall of the iron filings adsorption channel 2.

[0036] Next, the iron filings are pushed to the gap and fall into the inlet of the screw conveyor below due to gravity, and are eventually discharged from the iron removal device; at this time, the wall of the iron filings adsorption channel 2 is cleaned due to the scraping action of the rotating blades 210.

Claims

1. An iron removal device for a coal slurry rod mill, one end of which is connected to the coal slurry mill via a grouting pipe (110), characterized in that, include: Shell (1); The iron filings adsorption channel (2) is made of magnetic material and is set in a funnel shape with a C-shaped cross section. The iron filings adsorption channel (2) is fixed above the discharge port (4) of the housing (1). A rotating blade (210) is coaxially connected to the center of the iron filings adsorption channel (2). Waste conveying device (3) is located on the side below the iron filings adsorption channel (2); the inlet of the waste conveying device (3) is directly below the C-shaped notch of the iron filings adsorption channel (2) and is used to receive and send out the iron filings scraped down by the rotating blade (210).

2. The iron removal device for a coal slurry rod mill according to claim 1, characterized in that: The rotating blade (210) is made of low magnetic permeability plastic.

3. The iron removal device for a coal slurry rod mill according to claim 2, characterized in that: The thickness of the rotating blade (210) is equal to the width of the notch in the iron filings adsorption channel (2), and is used to seal the notch in the iron filings adsorption channel (2).

4. The iron removal device for a coal slurry rod mill according to claim 1, characterized in that: The top side of the iron filings adsorption channel (2) is fixed inside the housing (1) by bolts.

5. The iron removal device for a coal slurry rod mill according to claim 4, characterized in that: The bolts used are non-magnetic bolts.

6. The iron removal device for a coal slurry rod mill according to claim 1, characterized in that: The waste conveying device (3) adopts a screw conveyor.

Images