Pulverized coal conveying mechanism with iron removal function

Abstract

The utility model belongs to the technical field of pulverized coal conveying, and particularly relates to a pulverized coal conveying mechanism with an iron removal function. The pulverized coal conveying mechanism with the iron removal function comprises a feeding shell, the bottom wall of the feeding shell is fixedly connected with a discharging shell, the discharging shell is of a conical design, the bottom wall of the discharging shell is fixedly connected with a communicating pipe, and a feeding assembly used for conveying pulverized coal is installed at the bottom of the communicating pipe; a feeding assembly used for conveying pulverized coal is installed on the upper portion of the machine body, an iron removing assembly used for removing iron impurities in the pulverized coal is installed on the outer side of the feeding assembly, a collecting assembly used for collecting the removed iron impurities in a centralized mode is installed at the bottom of the feeding assembly, the feeding assembly comprises a feeding pipe, and the rear end of the top wall of the feeding pipe is communicated with a communicating pipe. The conveying efficiency and the sealing performance are improved through a thread structure, meanwhile, iron impurities in pulverized coal are efficiently adsorbed and separated through the magnetic field of the electromagnet set in the conveying process, the iron impurities slide down to a collecting device along the pipe wall, and efficient iron removal is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal powder conveying, in particular to a coal powder conveying mechanism with iron removal function. BACKGROUND

[0002] Coal powder conveying technology is the core link of coal-fired power generation, metallurgy and chemical industry and other industrial fields, and is mainly used for efficiently and stably conveying the crushed coal powder to a combustion device or a gasification furnace.

[0003] Chinese patent authorization announcement No. CN205114423U provides a mechanism for conveying coal powder in a straight line by using a track, which scheme "includes a storage hopper, a conveying system and a coal outlet pipe, the conveying system is arranged between the storage hopper and the coal outlet pipe, the conveying system includes an output shaft, a driven shaft and a conveying belt tensioned on the output shaft and the driven shaft, a limiting shaft is arranged between the coal powder outlet end of the storage hopper and the conveying belt, and the output shaft is arranged corresponding to the coal outlet pipe. The mechanism for conveying coal powder provided by the utility model can make the coal powder move in a straight line at a uniform speed through the conveying belt, the limiting shaft can be used to adjust the height of the output coal powder according to the required amount of coal powder, and the linear speed of the limiting shaft is greater than the conveying speed of the conveying belt, so that the coal powder is not accumulated, the coal powder is uniformly and stably conveyed, and the service life of the coal powder conveying mechanism is also prolonged.

[0004] Although the above device can stably convey coal powder, iron impurities in the coal powder cannot be effectively removed during the conveying process due to the mixing of iron impurities in the coal powder, which will adversely affect the subsequent production process, and the above device has certain use limitations. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a coal powder conveying mechanism with iron removal function to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a coal powder conveying mechanism with iron removal function, which comprises a feeding shell, the bottom wall of the feeding shell is fixedly connected with a discharging shell, the discharging shell is designed in a conical shape, the bottom wall of the discharging shell is fixedly connected with a communication pipe, the bottom of the communication pipe is provided with a feeding assembly for conveying coal powder, the outer side of the feeding assembly is provided with an iron removal assembly for removing iron impurities in the coal powder, and the bottom of the feeding assembly is provided with a collecting assembly for collecting the removed iron impurities.

[0007] Preferably, the feeding assembly comprises a feeding pipe, the top wall rear end of the feeding pipe is communicated with the communication pipe, a motor is fixedly installed on the outer wall rear end of the feeding pipe, the output end of the motor is fixedly connected with a threaded column, and there is a slight gap between the outer wall of the threaded column and the inner wall of the feeding pipe for the falling of iron impurities.

[0008] Preferably, the iron removing assembly comprises a plurality of electromagnets, the plurality of electromagnets are respectively arranged at left and right ends of the outer wall of the feeding pipe in a rectangular array, the electromagnets are fixedly installed on the outer wall of the feeding pipe through fixing frames, and the magnetic field directions of the two electromagnets are perpendicular to the conveying direction of the coal powder.

[0009] Preferably, the collecting device comprises a filter screen, the filter screen is installed at the middle of the inner bottom wall of the feeding pipe, a plurality of first filter holes are arranged on the outer surface of the filter screen in a rectangular array, and a collecting box is installed at the bottom of the feeding pipe.

[0010] Preferably, a filter plate is fixedly installed at the middle lower part of the inner wall of the feeding shell, a plurality of second filter holes are arranged on the outer surface of the filter plate along an annular array with the center of the filter plate as the center, the outer surface of the filter plate is embedded with a magnetic material, and the outer diameter of the second filter hole is slightly larger than that of the first filter hole.

[0011] Preferably, the bottom wall of the feeding pipe is fixedly connected with a discharging plate at the front end.

[0012] Preferably, a control panel is installed at the front end of the outer wall of the feeding shell, and the control panel is electrically connected with the motor.

[0013] Compared with the prior art, the coal powder conveying mechanism with the iron removing function has the beneficial effects that: the coal powder is conveyed through the feeding assembly, the conveying efficiency and the sealing property are enhanced by the threaded structure, and the iron impurities in the coal powder are efficiently adsorbed and separated by the magnetic field of the electromagnet group during the conveying process, so that the iron impurities slide along the pipe wall to the collecting device, and efficient iron removal is realized. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a partial sectional view of the coal powder conveying mechanism with the iron removing function;

[0016] Figure 3 It is a partial split structure schematic view of the coal powder conveying mechanism with the iron removing function.

[0017] In the drawing: 1, feeding shell; 2, conical discharging shell; 3, communication pipe; 4, feeding pipe; 41, motor; 42, threaded column; 5, electromagnet; 51, fixing frame; 6, filter screen; 61, first filter hole; 62, collecting box; 63, mounting block; 7, discharging plate; 8, filter plate; 9, second filter hole; 10, control panel. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0019] Please refer to Figure 1 、 Figure 2 and Figure 3 , the utility model provides a kind of technical scheme: a kind of coal powder conveying mechanism with iron removal function, including feed shell 1, the bottom wall of feed shell 1 is fixedly connected with discharging shell 2, discharging shell 2 is conical design, the bottom wall of discharging shell 2 is fixedly connected with communicating pipe 3, the bottom of communicating pipe 3 is equipped with the feeding assembly for conveying coal powder, the outer side of feeding assembly is equipped with the iron removal assembly for removing iron impurities in coal powder, the bottom of feeding assembly is equipped with the collection assembly for concentrating collection to remove iron impurities;Feeding assembly includes feeding pipe 4, the top wall rear end of feeding pipe 4 and communicating pipe 3 are communicated, the outer wall rear end of feeding pipe 4 is fixedly installed with motor 41, the output end of motor 41 is fixedly connected with threaded column 42, and there is slight gap between the outer wall of threaded column 42 and the inner wall of feeding pipe 4 for iron impurities to fall.

[0020] Through the above technical scheme, feed shell 1, discharging shell 2 and communicating pipe 3 are fixed design, can be sent into feeding pipe 4 with stable coal powder, while motor 41 drives threaded column 42 to rotate in the inner wall of feeding pipe 4, coal powder is gradually conveyed to the end of feeding pipe 4 by screw thread structure, realizes the stable conveying of coal powder, while coal powder has certain risk, the sealing property in conveying process can be improved by the sealing design of feeding pipe 4, improve the safety of device, while threaded column 42 needs to keep small gap with the inner wall of feeding pipe 4 for iron impurities to fall.

[0021] Please refer to Figure 1 and Figure 3 , iron removal assembly includes multiple electromagnets 5, multiple electromagnets 5 are respectively located at the left and right ends of the outer wall of feeding pipe 4 in the form of rectangular array, electromagnet 5 is fixedly installed on the outer wall of feeding pipe 4 by fixed frame 51, and the magnetic field direction of two electromagnets 5 is perpendicular to the conveying direction of coal powder;Collection includes filter screen 6, filter screen 6 is installed in the middle part of the inner bottom wall of feeding pipe 4, and a plurality of first filter holes 61 are formed in the outer surface of filter screen 6 in the form of rectangular array, and a collection box 62 is installed at the bottom of feeding pipe 4.

[0022] Through the technical scheme, the electromagnet 5 outside the feeding pipe 4 forms a magnetic field after being electrified, and the direction of the magnetic field is perpendicular to the flowing direction of the coal powder in the feeding pipe 4, so that the contact opportunity of the iron impurities in the coal powder with the magnetic field can be maximized, the iron impurities are adsorbed by the magnetic field after contacting the magnetic field, so as to be separated from the coal powder, and finally fall into the collecting assembly through the self-pressure.

[0023] Please refer to Figure 1 , Figure 2 and Figure 3 , the inner wall of the feeding shell 1 is fixedly installed with a filter plate 8 at the lower part, a plurality of second filter holes 9 are arranged on the outer surface of the filter plate 8 in an annular array with the center of the filter plate 8 as the center, the outer surface of the filter plate 8 is embedded with a magnetic material, and the outer diameter of the second filter hole 9 is slightly larger than that of the first filter hole 61; the bottom wall of the feeding pipe 4 is fixedly connected with a discharging plate 7 at the front end; the outer wall of the feeding shell 1 is installed with a control panel 10 at the front end, and the control panel 10 is electrically connected with the motor 41.

[0024] Through the technical scheme, the filter plate 8 can perform a preliminary iron removal operation on the coal powder, and the design of the second filter hole 9 can ensure that the coal powder can pass through and avoid entering the collecting box 62 through the first filter hole 61; the installation of the discharging plate 7 at the front end of the bottom wall of the feeding pipe 4 can send out the coal powder after iron removal; the device controls the working state of the motor 41 through the control panel 10, so as to ensure the stability of the feeding assembly.

[0025] Working principle: the coal powder that needs to be transported is poured from the feeding shell 1, the coal powder passes through the second filter hole 9 of the outer surface of the filter plate 8, because the outer surface of the filter plate 8 is embedded with magnetic material, the iron impurities in the coal powder can be adsorbed by the magnetic material during flowing out of the filter plate 8, so that the preliminary iron removal effect is realized, the coal powder after the filter plate 8 passes through the lower shell 2 and the connecting pipe 3 into the feeding pipe 4, at this time, the motor 41 is started by controlling the panel 10, the threaded column 42 is rotated in the inner wall of the feeding pipe 4 by the motor 41, the coal powder is pushed by the threaded structure, so that it moves forward along the outer wall of the threaded column 42 constantly, until it flows out through the discharge plate 7, in the process of coal powder conveying, the electromagnet 5 on both sides of the outer wall of the feeding pipe 4 is electrified, when the electromagnet 5 is electrified, a strong magnetic field will be generated around it. The direction of this magnetic field is perpendicular to the flow direction of the coal powder in the conveying pipeline, when the coal powder with iron impurities passes through the electromagnet 5 group, the iron impurities will be adsorbed under the action of the magnetic field, so as to separate from the coal powder, the electromagnet 5 group is installed equidistantly on the outside of the feeding pipe 4, so as to ensure the sufficiency of removing the iron impurities in the process of coal powder conveying, the adsorbed iron impurities will gradually fall along the inner wall of the feeding pipe 4 under the action of gravity, enter the collecting box 62 through the first filter hole 61 of the outer surface of the filter screen 6, because the first filter hole 61 is slightly smaller than the second filter hole 9, so as to ensure that the coal powder will not enter the collecting box 62 through the first filter hole 61, the collecting box 62 is detachably installed at the bottom of the feeding pipe 4 through the mounting block 63, so that when the iron impurities in the collecting box 62 are full, it can be taken down and cleaned, which is convenient for recycling.

[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A coal powder conveying mechanism with iron removal function, comprising a feeding shell (1), characterized in that: The bottom wall of the feeding shell (1) is fixedly connected with a discharging shell (2), the discharging shell (2) is designed in a conical shape, the bottom wall of the discharging shell (2) is fixedly connected with a communication pipe (3), the bottom of the communication pipe (3) is provided with a feeding assembly for conveying the coal powder, the outer side of the feeding assembly is provided with an iron removal assembly for removing the iron impurities in the coal powder, and the bottom of the feeding assembly is provided with a collecting assembly for collecting the removed iron impurities.

2. The coal powder conveying mechanism with a de-ironing function according to claim 1, characterized in that: The feeding assembly comprises a feeding pipe (4), the top wall rear end of the feeding pipe (4) is communicated with the communication pipe (3), the outer wall rear end of the feeding pipe (4) is fixedly provided with a motor (41), the output end of the motor (41) is fixedly connected with a threaded column (42), and a slight gap exists between the outer wall of the threaded column (42) and the inner wall of the feeding pipe (4) for the iron impurities to fall.

3. The pulverized coal conveying mechanism with a de-ironing function according to claim 2, characterized in that: The iron removal assembly comprises a plurality of electromagnets (5), the plurality of electromagnets (5) are respectively arranged at the left and right ends of the outer wall of the feeding pipe (4) in a rectangular array, the electromagnets (5) are fixedly installed on the outer wall of the feeding pipe (4) through a fixed frame (51), and the magnetic field directions of the two electromagnets (5) are perpendicular to the conveying direction of the coal powder.

4. The pulverized coal conveying mechanism with a de-ironing function according to claim 2, characterized in that: The collecting assembly comprises a filter screen (6), the filter screen (6) is installed in the middle of the inner bottom wall of the feeding pipe (4), a plurality of first filter holes (61) are formed in a rectangular array on the outer surface of the filter screen (6), the bottom of the feeding pipe (4) is provided with a collecting box (62), and the collecting box (62) is detachably connected to the bottom of the feeding pipe (4) through mounting blocks (63) at the two ends of the outer wall of the collecting box (62).

5. The pulverized coal conveying mechanism with a de-ironing function according to claim 4, characterized in that: The inner wall of the middle lower part of the feeding shell (1) is fixedly provided with a filter plate (8), a plurality of second filter holes (9) are formed in an annular array on the outer surface of the filter plate (8) with the center of the filter plate (8) as the center, the outer surface of the filter plate (8) is embedded with a magnetic material, and the outer diameter of the second filter hole (9) is slightly larger than that of the first filter hole (61).

6. The pulverized coal conveying mechanism with a de-ironing function according to claim 2, characterized in that: The bottom wall of the feeding pipe (4) is fixedly connected with a discharging plate (7).

7. The pulverized coal conveying mechanism with a de-ironing function according to claim 2, characterized in that: The outer wall of the front end of the feeding shell (1) is provided with a control panel (10), and the control panel (10) and the motor (41) are electrically connected.

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