CN213669835U - Iron removing device - Google Patents

Abstract

The utility model discloses an iron removing device, which comprises a sieve plate, a magnetic bar, a sieve plate pressing bar and a fixed structure; the sieve plate is arranged in the classifying screen; the magnetic bar is arranged on the sieve plate; the sieve plate layering is L-shaped, symmetrically arranged on two sides of the magnetic bar and vertical to the sieve plate; the fixing structure fixes the screen plate pressing strip on the screen plate, and the magnetic rod is fixed on the screen plate. The gap between the iron remover requirement and the material can not meet the requirement of suction force, resulting in that the scrap iron can not be effectively removed. In the material conveying process, the raw coal has large particle size difference, so that the material conveying thickness difference is large, and the gap requirement of the conventional iron remover cannot be met. The raw coal belt is a U-shaped section, and waste iron cannot be cleaned up. Under the condition of not influencing the original process and equipment operation, the suction gap between iron removal and scrap iron is reduced, and the problem of scrap iron removal is completely solved on the basis of the original unsatisfactory iron removal effect. By the scheme, the investment is small, and the magnetic rod is simple to add; and the normal operation of the equipment is protected, and the problems of blockage and abrasion of the equipment are solved.

Description

Iron removing device

Technical Field

The utility model relates to a mechanical equipment technical field, concretely relates to deironing device.

Background

According to underground conditions and production conditions, the conventional coal mine production raw coal is transported out of the ground with the granularity of below 300 mm. Raw coal contains steel parts and accessories falling off from equipment such as a coal mining machine, a belt conveyor, a track and the like in the coal mining process. When raw coal is reprocessed, the waste iron influencing production and equipment needs to be effectively removed.

The existing coal washing plant carries out feeding limitation on fed raw coal in a raw coal preparation stage according to requirements of raw coal conditions, equipment conditions and production product conditions. Therefore, the design specification of coal washing engineering GB50459-2016 No. 4.3.2 enforces that an iron removal device is required to be arranged before a feeding port of the crusher. The iron removal device is arranged to prevent the iron scraps from entering a coal preparation system to generate clamping stagnation, damage equipment and influence continuous production.

The existing iron removing device for the coal washing plant is mainly characterized in that a suspended permanent magnet iron remover and an electromagnetic iron remover are additionally arranged at the discharge end of a feeder, the middle part of a raw coal belt and the head position of the raw coal belt in the raw coal preparation stage for iron removal.

The conventional iron remover can suck out 0.1-35 Kg of waste iron, but has strict requirements on the suspension height and the material thickness, the gap between the iron remover and the material is required to be within 50 mm, and the conveying height difference of raw coal in the whole process is far greater than 50 mm due to the granularity and the feeding mode of the raw coal. The suspension height is generally about 300 mm. The iron removal effect is extremely undesirable.

The waste iron in the raw coal is mostly parts of coal mining equipment and is mostly high-strength wear-resistant steel parts; the hardness and the wear resistance of the crusher are higher than those of coal dressing equipment, and the crusher mainly damages a hammer head and a screen bar of the crusher, blocks a screen plate of a jigger and damages a wear-resistant layer of a swirler.

The gap between the iron remover requirement and the material can not meet the requirement of suction force, resulting in that the scrap iron can not be effectively removed.

In the material conveying process, the raw coal has large particle size difference, so that the material conveying thickness difference is large, and the gap requirement of the conventional iron remover cannot be met.

The raw coal belt is of a U-shaped section, the waste iron is pressed by large coal and gangue, and the iron remover cannot lift the large coal to suck the waste iron; the belt conveyor head part does parabolic motion due to coal blocks, and waste iron cannot be cleaned up due to the blocking of large materials.

Therefore, a technical scheme capable of solving the technical problem that the scrap iron cannot be effectively removed is urgently needed in the industry.

SUMMERY OF THE UTILITY MODEL

The utility model aims at disclosing a deironing device, solving the technical problem that can not thoroughly deironing in deironing technology.

In order to solve the technical problem, the utility model discloses a deironing device, include:

the screen plate is arranged in the grading screen; and

and the magnetic bar is arranged on the sieve plate.

Furthermore, the sieve plate and the horizontal plane form an included angle.

Further, the sieve plate is arranged at an angle of 30 degrees.

Further, the number of the magnetic rods is more than or equal to 1.

Further, the number of the magnetic rods is 2 or 3, and the magnetic rods are arranged in parallel.

Further, the size of the magnetic rod is phi 25 or phi 50.

Furthermore, the sieve plate pressing strip is L-shaped and symmetrically arranged on two sides of the magnetic rod and perpendicular to the sieve plate.

Further, the height of the sieve plate pressing strip is 50-100 mm.

Further, the screen plate pressure strip is an L63 angle steel or an L50 angle steel.

Furthermore, the sieve plate is arranged on a linear sieve or an inclined raw coal classifying sieve device.

Through implementing the technical scheme of the utility model, can obtain following beneficial effect:

under the condition of not influencing the original process and equipment operation, the suction gap between iron removal and scrap iron is reduced, and the problem of scrap iron removal is completely solved on the basis of the original unsatisfactory iron removal effect. Has the technical effects of small investment and simple installation of the magnetic rod. Meanwhile, the normal operation of the equipment can be protected, and the problems of blockage and abrasion of the equipment are solved.

Drawings

FIG. 1 is a schematic structural view of an iron removing device of the present invention;

FIG. 2 is a schematic structural view of the iron removing device of the present invention installed at the position of the linear sieve A;

fig. 3 is the schematic structural diagram of the iron removing device of the utility model installed at the inclined raw coal classifying screen a.

Legend: 1. a sieve plate; 2. a magnetic bar; 3. layering a sieve plate; 4. a fixed structure; 41. a bolt; 42. and a nut.

Detailed Description

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In the description of the present invention, it is to be understood that the terms "middle", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "front", "back", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on the second feature or indirectly via intermediate members. "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can include, for example, a fixed connection, a removable connection, or an integral connection, a mechanical connection, an electrical connection or communication with each other, a direct connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements, unless expressly stated or limited otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in figure 1, the utility model discloses a deironing device, which comprises a sieve plate 1, a magnetic bar 2, a sieve plate pressing bar 3 and a fixed structure 4.

The screen plate 1 is arranged in a classifying screen, and the device is arranged on a linear screen or an inclined raw coal classifying screen device. Because the scrap iron is in the position between the material and the sieve plate, due to the density difference of the material and the scrap iron, the jumping amplitude of the scrap iron is small, the scrap iron moves forward close to the sieve plate, the iron is removed by mounting the sieve plate, the magnetic gap can be reduced to 0-10 mm, and the requirement of the suction gap of the magnet can be met. Therefore, the magnetic rods 2 are arranged on the sieve plate 1, the magnetic rods 2 are fixed on the sieve plate 1 through the sieve plate pressing strips 3, the sieve plate pressing strips 3 are L-shaped and symmetrically arranged on two sides of the magnetic rods 2 and perpendicular to the sieve plate 1. The fixing structure 4 comprises a bolt 41 and a nut 42, the screw part of the bolt 41 penetrates through the screen plate 1 and the screen plate pressing strip 3 positioned on the screen plate 1, and is in threaded connection with the nut 42, so that the head part of the bolt 41 is abutted against the screen plate 1, the screen plate pressing strip 3 is fixed on the screen plate 1, and meanwhile, the magnetic rod 2 is fixed on the screen plate 1 by the screen plate pressing strip 3.

The sieve plate 1 and the horizontal plane form an included angle. Preferably, the screen deck 1 is arranged at 30 ° to the horizontal plane. The screen plate pressure strip 3 is an L63 angle steel or an L50 angle steel. The angle steel is vertical to the screen surface of the screen plate 1, when the height of the screen plate layering 3 is 50-100 mm, the material screening movement is not influenced, the high-strength magnetic rod 2 with the size of phi 25 or phi 50 is adopted, the magnetic rod is placed in front of the angle steel, and the magnetic rod can be effectively prevented from being broken by smashing.

The number of the magnetic rods 2 is more than or equal to 1. Preferably, for more effective iron removal, the number of the magnetic rods 2 is 2 or 3, the magnetic rods are arranged in parallel to each other to form the magnetic fence, and all the waste iron needs to enter the crusher and turn over the 63 mm magnetic railing.

Because high strength bar magnet magnetic force is strong, after the installation with the screen face steel sheet, press the angle steel back direct contact of sieve board, form 90 contained angles, magnetic force reaches the highest suction. The magnetic rod 2 is fixed by a fixing structure 4 below the magnetic rod in consideration of use safety and convenience in replacement.

Referring to fig. 2-3, the iron removing device is respectively installed on the linear sieve and the inclined raw coal classifying sieve for removing iron.

According to the technical scheme, the high-strength magnetic rod is adopted, the inclined angle of the raw coal grading sieve is utilized, the magnetic rod is transversely placed on the screen plate sunning surface of the grading sieve to form a 2-3-channel gate weir, the screen surface is 25 mm higher than the original screen surface, raw coal grading is not affected, oversize materials must pass through the magnetic rod gate weir, and the scrap iron is absorbed as long as the scrap iron contacts the magnetic rod. The sieve surface is additionally provided with 50 angle steels by utilizing the sieve plate fixing bolts, and the magnetic rods are directly placed on the angle steels of the sieve surface without being bound and fixed. Can carry out manual cleaning in operation, simple and convenient has just so solved the deironing problem of raw coal. Through the demonstration of 6 months of experiments, after the magnetic rod is additionally arranged on the classifying screen, the hammer head and the screen bar of the crusher are normally worn and replaced, and the crusher is not damaged by blockage of waste iron; the accumulated scrap iron of the sieve plate of the jigger is almost zero.

The method is carried out on the basis of iron removal of a raw coal machine head, the omitted waste iron amount is small, and the waste iron can enter a screen surface to be cleaned when the machine is stopped. The problems of the prior art are solved: the gap between the iron remover requirement and the material can not meet the requirement of suction force, resulting in that the scrap iron can not be effectively removed. In the material conveying process, the raw coal has large particle size difference, so that the material conveying thickness difference is large, and the gap requirement of the conventional iron remover cannot be met. The raw coal belt is of a U-shaped section, the waste iron is pressed by large coal and gangue, and the iron remover cannot lift the large coal to suck the waste iron; the belt conveyor head part does parabolic motion due to coal blocks, and the technical problems that waste iron cannot be cleaned and the like due to the blocking of large materials are solved.

Under the condition of not influencing the original process and equipment operation, the suction gap between iron removal and scrap iron is reduced, and the problem of scrap iron removal is completely solved on the basis of the original unsatisfactory iron removal effect. Has the technical effects of small investment and simple installation of the magnetic rod. Meanwhile, the normal operation of the equipment can be protected, and the problems of blockage and abrasion of the equipment are solved.

The above description is for illustrative purposes only and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. that do not depart from the spirit and principles of the present invention should be construed as within the scope of the present invention.

Claims (9)

1. An iron removal device, comprising:

the screen plate (1), the screen plate (1) is installed in a classifying screen; and

the magnetic bar (2), the said magnetic bar (2) is installed on sieve plate (1);

the sieve plate pressing strip (3) is L-shaped, symmetrically arranged on two sides of the magnetic rod (2) and vertical to the sieve plate (1);

the fixing structure (4) comprises a bolt (41) and a nut (42), the screw part of the bolt (41) penetrates through the sieve plate (1) and the sieve plate pressing strip (3) located on the sieve plate (1), the screw part is in threaded connection with the nut (42), the head of the bolt (41) is abutted to the sieve plate (1), the sieve plate pressing strip (3) is fixed on the sieve plate (1), and meanwhile, the sieve plate pressing strip (3) fixes the magnetic rod (2) on the sieve plate (1).

2. The iron removal device according to claim 1, characterized in that the sieve plate (1) is arranged at an angle to the horizontal.

3. The iron removal device according to claim 2, characterized in that the sieve plate (1) is arranged at 30 °.

4. The iron removal device according to claim 1, characterized in that the number of said magnetic bars (2) is greater than or equal to 1.

5. The iron removal device according to claim 4, characterized in that said magnetic bars (2) are 2 or 3 in number and are arranged parallel to each other.

6. The iron removal device according to claim 1, characterized in that the size of said bars (2) is phi 25 or phi 50.

7. The iron removal device according to claim 1, characterized in that the height of said screen plate bead (3) is 50-100 mm.

8. The iron removal device according to claim 1, characterized in that the screen hold-down bar (3) is an L63 angle or an L50 angle.

9. The iron removal plant according to claim 1, characterized in that the screen deck (1) is mounted on a linear screen or inclined raw coal classifying screen apparatus.

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