Pulverized coal filter

Abstract

The utility model discloses a pulverized coal filter which comprises a box body, fixing seats are fixed at the left end and the right end in the box body, electromagnet plates are fixed at the tail ends of the fixing seats, penetrating openings are formed in the lower sides of the left end and the right end of the box body, a screen frame is arranged on the lower portion in the box body, a screen is installed in the screen frame, and a collecting box is arranged on the right side of the screen frame. When pulverized coal enters the box body from top to bottom, the pulverized coal can slide to the electromagnet plate on the lower right portion from the electromagnet plate on the upper left portion, in the process, the electromagnet plates can attract iron impurities in the pulverized coal, non-iron impurities slide to the screen to be separated, and therefore when the non-iron impurities on the screen need to be cleaned, the non-iron impurities on the screen need to be cleaned. When the device is used, the collecting box can be moved into the box body, the electromagnet plate is powered off at the moment, the iron impurities slide into the collecting box, and then the non-iron impurities on the screen can be cleaned, so that the iron impurities and the non-iron impurities can be separately collected and cleaned, and a worker can more conveniently carry out cleaning work.

Description

Technical Field

[0001] The utility model relates to a filter, in particular to a pulverized coal filter. Background Art

[0002] The pulverized coal preparation and injection system of a calcination (or drying) furnace using pulverized coal as fuel generally consists of a coal mill, a powder collector, a pulverized coal bin, a pulverized coal weighing scale, a blowing fan, and a blowing pipeline. In the initial stage of the operation of the pulverized coal preparation and injection system, due to incomplete cleaning of the equipment, pipelines, powder collectors, and pulverized coal bins in the system, various sundries often remain. Under the action of the induced draft fan in the system, these sundries are deposited into the pulverized coal bin and then enter the pulverized coal weighing scale. Since the pulverized coal weighing scale is a precision weighing device with a complex internal structure and small gaps between the rotating parts, the entry of sundries can easily cause the rotating parts of the pulverized coal weighing scale to get stuck, and it is necessary to stop the machine for treatment, resulting in production losses of the furnace. Therefore, a pulverized coal filter is required.

[0003] After retrieval, a utility model with a patent number of 202021115393.8 discloses a pulverized coal iron removal filter. The screen of this pulverized coal iron removal filter is laid on top of the magnetic steel rods, thus forming a magnetic filtering component to filter and adsorb iron and non-iron sundries in the pulverized coal flowing through this filter. However, when it is necessary to clean the iron sundries, it takes a relatively long time to separate the iron and non-iron sundries from the screen, causing inconvenience to the staff. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a pulverized coal filter to solve the problem that when it is necessary to clean the iron sundries in the current pulverized coal filter, it takes a relatively long time to separate the iron and non-iron sundries from the screen, causing inconvenience to the staff.

[0005] A pulverized coal filter includes a box body. Fixed seats are fixed at both the left and right ends inside the box body. An electromagnetic iron plate is fixed at the end of the fixed seat. Through holes are opened at the lower sides of both the left and right ends of the box body. A screen frame is arranged below the inside of the box body. A screen is installed inside the screen frame. A collection box is arranged on the right side of the screen frame. A connecting seat is rotatably connected between the screen frame and the collection box. The connecting seat is inserted into the through hole. Push-pull plates inserted into the through hole are fixed at the mutually remote ends of the screen frame and the collection box. Iron bars are fixed at both the upper and lower ends of the push-pull plate. Switch buttons are installed at both the left and right ends of the box body and above the through hole. The iron bars are in contact with the switch buttons. The switch buttons are electrically connected to the electromagnetic iron plate.

[0006] Preferably, the fixed seats are arranged in a staggered manner, and the end of the electromagnetic iron plate inclines downward at an angle of 45 degrees.

[0007] Preferably, bosses are fixedly arranged around the inner wall of the box body, and the bosses are located below the screen frame and in contact with the screen frame.

[0008] Preferably, magnetic strips are fixedly arranged at the left and right ends of the box body and below the through openings, and the iron strips are attracted to and adhered to the magnetic strips.

[0009] Preferably, rubber pads are adhesively fixed to the upper and lower ends of the push-pull plate, the iron strips penetrate through the rubber pads, and the rubber pads are closely attached to the inner wall of the through opening.

[0010] Preferably, connecting grooves are formed in the front sides of the left and right ends of the connecting seat, the front ends of the connecting grooves are open ends, connecting shafts are fixedly arranged in the middle of the ends of the screen frame and the collection box close to the connecting seat, the connecting shafts are located inside the connecting grooves and are movably connected to the connecting grooves, the connecting grooves are in a T shape, and the connecting shafts are in a T-shaped structure.

[0011] Beneficial effects: When the pulverized coal enters the interior of the box body from top to bottom, the pulverized coal can slide from the electromagnetic iron plate in the upper left to the electromagnetic iron plate in the lower right. During this process, the electromagnetic iron plate can attract the iron impurities in the pulverized coal, while the non-iron impurities slide onto the screen for separation. In this way, when it is necessary to clean the non-iron impurities on the screen, the collection box can be moved into the box body. At this time, the electromagnetic iron plate is powered off, and the iron impurities slide into the interior of the collection box. Then, the non-iron impurities on the screen can be cleaned, so that the iron impurities and non-iron impurities can be separately collected and cleaned, which is more convenient for the staff to carry out the cleaning work. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the overall filtration of the present invention;

[0013] Figure 2 It is a schematic diagram of the overall collection of the present invention;

[0014] Figure 3 It is a schematic diagram of the connecting seat of the present invention.

[0015] In the figure: 1-box body, 2-fixed seat, 3-electromagnetic iron plate, 4-through opening, 5-switch button, 6-magnetic strip, 7-iron strip, 8-push-pull plate, 9-rubber pad, 10-screen frame, 11-screen, 12-connecting seat, 13-connecting groove, 14-connecting shaft, 15-collection box, 16-boss. Specific Embodiments

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer to Figures 1 - 3 , a pulverized coal filter, comprising a box body 1. Fixed seats 2 are fixed at both left and right ends inside the box body 1. An electromagnetic iron plate 3 is fixed at the end of the fixed seat 2. The fixed seats 2 are arranged in a staggered manner. The end of the electromagnetic iron plate 3 is inclined downward at an angle of 45 degrees. When pulverized coal enters the inside of the box body 1 from top to bottom, the pulverized coal can fall onto the electromagnetic iron plate 3 in the upper left, and then slide from the electromagnetic iron plate 3 in the upper left to the electromagnetic iron plate 3 in the lower right, and then slide left along the electromagnetic iron plate 3 in the lower right. During this process, the electromagnetic iron plate 3 is in an energized state to attract iron impurities in the pulverized coal, while the pulverized coal and non-iron impurities slide down.

[0018] Through holes 4 are opened on the lower sides of both left and right ends of the box body 1. A screen frame 10 is arranged below the inside of the box body 1. Convex platforms 16 are fixed around the inner wall of the box body 1. The convex platforms 16 are located below the screen frame 10 and in contact with the screen frame 10. A screen 11 is installed inside the screen frame 10. When the non-iron impurities slide down, the non-iron impurities and the pulverized coal can fall onto the screen 11 together. The pulverized coal passes through the screen 11 and falls, while the non-iron impurities are blocked above the screen 11.

[0019] A collection box 15 is provided on the right side of the screen frame 10. A connecting seat 12 is rotatably connected between the screen frame 10 and the collection box 15. The connecting seat 12 is inserted into the through-hole 4. Push-pull plates 8 inserted into the through-hole 4 are fixed at both ends of the screen frame 10 and the collection box 15 that are away from each other. Iron bars 7 are fixed at both the upper and lower ends of the push-pull plate 8. Switch buttons 5 are installed at both the left and right ends of the box body 1 and above the through-hole 4. The iron bar 7 contacts the switch button 5. The switch button 5 is electrically connected to the electromagnetic iron plate 3. Magnetic strips 6 are fixed at both the left and right ends of the box body 1 and below the through-hole 4. The iron bar 7 is attracted to and adheres to the magnetic strip 6. Rubber pads 9 are adhesively fixed at both the upper and lower ends of the push-pull plate 8. The iron bar 7 penetrates through the rubber pad 9. The rubber pad 9 is in close contact with the inner wall of the through-hole 4. Connecting grooves 13 are formed at the front sides of both the left and right ends of the connecting seat 12. The front end of the connecting groove 13 is an open end. Connecting shafts 14 are fixed in the middle of the ends of the screen frame 10 and the collection box 15 that are close to the connecting seat 12. The connecting shaft 14 is located inside the connecting groove 13 and is movably connected to the connecting groove 13. The connecting groove 13 is T-shaped. The connecting shaft 14 is of a T-shaped structure. When it is necessary to clean the non-ferrous impurities on the screen 11, the connecting shaft 14 of the collection box 15 is aligned with the connecting groove 13 of the connecting seat 12 and slid in. Then, the screen frame 10 is pushed to the left, so that the screen frame 10 slides out of the inside of the box body 1, and at the same time, the collection box 15 slides into the inside of the box body 1. In this way, the iron bar 7 in the upper left no longer presses the switch button 5 on the left, and the iron bar 7 in the lower left no longer attracts the magnetic strip 6, so that the iron bar 7 in the upper right presses the switch button 5 on the right, and the iron bar 7 in the lower right attracts the magnetic strip 6. When the switch button 5 on the left is pressed, the electromagnetic iron plate 3 is energized, and when the switch button 5 on the right is pressed, the electromagnetic iron plate 3 is de-energized. The electromagnetic iron plate 3 is externally powered. In this way, after the electromagnetic iron plate 3 is de-energized, the ferrous impurities on the electromagnetic iron plate 3 will slide into the inside of the collection box 15 and be collected. By sliding the screen frame 10 forward, the non-ferrous impurities on the screen 11 can be cleaned. Then, by pushing the collection box 15 to the right, the ferrous impurities inside the collection box 15 can be cleaned.

[0020] Working principle: When in use, this pulverized coal filter is installed between the coal powder bin and the coal powder weighing scale in the pulverized coal injection system of the furnace kiln, and is used to filter out iron and non-iron impurities in the pulverized coal falling into the coal powder bin to prevent the impurities from blocking the coal powder weighing scale. When the pulverized coal enters the interior of the box body 1 from top to bottom, the pulverized coal can fall onto the electromagnetic iron plate 3 in the upper left corner, and then slide from the electromagnetic iron plate 3 in the upper left corner to the right and fall onto the electromagnetic iron plate 3 in the lower right corner, and then slide left along the electromagnetic iron plate 3 in the lower right corner. During this process, the electromagnetic iron plate 3 is in an energized state and can attract the iron impurities in the pulverized coal, while the pulverized coal and non-iron impurities slide down, causing the non-iron impurities and the pulverized coal to fall onto the screen 11 together. The pulverized coal passes through the screen 11 and falls, while the non-iron impurities are blocked above the screen 11. When it is necessary to clean the non-iron impurities on the screen 11, the connecting shaft 14 of the collection box 15 is aligned with the connecting groove 13 of the connecting seat 12 and slides in from front to back, and then the screen frame 10 is pushed to the left, so that the screen frame 10 slides out of the interior of the box body 1, and at the same time the collection box 15 slides into the interior of the box body 1. In this way, the iron bar 7 in the upper left does not press the switch button 5 on the left, and the iron bar 7 in the lower left no longer attracts the magnetic strip 6, so that the iron bar 7 in the upper right presses the switch button 5 on the right, and the iron bar 7 in the lower right attracts the magnetic strip 6. In this way, when the electromagnetic iron plate 3 is powered off, the iron impurities on the electromagnetic iron plate 3 will slide into the interior of the collection box 15 for collection, and by sliding out the screen frame 10 forward, the non-iron impurities on the screen 11 can be cleaned, and then by pushing the collection box 15 to the right, the iron impurities in the collection box 15 can be cleaned.

[0021] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pulverized coal filter, comprising a housing (1), characterized in that: A fixing seat (2) is fixed at both left and right ends of the box body (1), an electromagnet plate (3) is fixed at the end of the fixing seat (2), a through opening (4) is opened at the lower side of both left and right ends of the box body (1), a screen frame (10) is provided at the lower part of the box body (1), a screen (11) is installed inside the screen frame (10), a collecting box (15) is provided on the right side of the screen frame (10), and a connecting seat (15) is rotatably connected between the screen frame (10) and the collecting box (15). 2), the connecting seat (12) is plugged into the through-opening (4), the ends of the screen frame (10) and the collecting box (15) that are away from each other are fixed with a push-pull plate (8) plugged into the through-opening (4), the upper and lower ends of the push-pull plate (8) are fixed with iron bars (7), the left and right ends of the box body (1) and located above the through-opening (4) are equipped with switch buttons (5), the iron bars (7) are in contact with the switch buttons (5), and the switch buttons (5) are electrically connected to the electromagnet plate (3).

2. A pulverized coal filter according to claim 1, characterized in that: The fixing seat (2) is arranged in a staggered manner, and the end of the electromagnet plate (3) is tilted downward at an angle of forty-five degrees.

3. A pulverized coal filter according to claim 1, characterized in that: Bosses (16) are fixed around the inner wall of the box body (1), and the bosses (16) are located below the screen frame (10) and in contact with the screen frame (10).

4. A pulverized coal filter according to claim 1, characterized in that: Magnetic strips (6) are fixed at the left and right ends of the box body (1) and below the through opening (4), and the iron strips (7) and the magnetic strips (6) are attracted to and attached to each other.

5. A pulverized coal filter according to claim 1, characterized in that: The upper and lower ends of the push-pull plate (8) are both bonded and fixed with rubber pads (9), the iron bar (7) and the rubber pads (9) are interpenetratingly arranged, and the rubber pads (9) are in close contact with the inner wall of the through opening (4).

6. A pulverized coal filter according to claim 1, characterized in that: The front sides of both left and right ends of the connecting seat (12) are provided with connecting grooves (13), the front end of the connecting groove (13) is an open end, and the middle of the ends of the screen frame (10) and the collecting box (15) close to the connecting seat (12) are fixed with connecting shafts (14), the connecting shafts (14) are located inside the connecting grooves (13) and are movably connected to the connecting grooves (13), the connecting grooves (13) are T-shaped, and the connecting shafts (14) are T-shaped structures.

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