Powder concentrator air duct provided with wear-resistant ceramic patches

Abstract

The utility model provides a powder concentrator air duct provided with wear-resistant ceramic patches, which relates to the technical field of powder concentrators, and comprises an air duct main body, the air duct main body consists of a material conveying channel and an air inlet, a transfer pipe is arranged between the material conveying channel and the air inlet, a crushing mechanism is arranged in the transfer pipe, and the wear-resistant ceramic patches are arranged in the crushing mechanism. A magnetic patch is arranged in the material conveying channel; the output end of the motor can drive the rotating shaft to rotate in the transfer pipe, the rotating shaft drives the crushing blades to rotate in the mesh enclosure, when the crushing blades make contact with scrap iron, the scrap iron can be crushed into iron powder, and the iron powder penetrates out of the mesh enclosure through the sieve holes and then is conveyed into the conveying channel through the communicating pipe. The abrasion-resistant ceramic pieces on the outer sides of the magnetic patches can prevent scouring force from directly acting on the interior of the conveying channel, the magnetic patches generate magnetism after being powered on, iron powder is adsorbed to the inner wall of the conveying channel to form a secondary protection layer, and therefore the problem that in the prior art, air sweep erosion is serious when an air channel and a conical part of a powder concentrator run for a long time is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder classifiers, in particular to an air duct of a powder classifier equipped with wear-resistant ceramic patches. Background Art

[0002] Powder classifiers are widely used in coal mills, raw material mid-unloading drying mills and cement mill systems in new dry cement production lines. They can be divided into three categories: three-separation powder classifiers, centrifugal powder classifiers and cyclone powder classifiers. There are many types of powder classifiers, and different types are suitable for different materials. Different models are also made according to customers' requirements for material fineness. Common powder classifiers include cyclone powder classifiers, three-separation powder classifiers, centrifugal powder classifiers, coal mill special powder classifiers, calcium powder special powder classifiers, etc. Later, many high-efficiency powder classifiers and high-efficiency three-separation powder classifiers were developed. They are new generation varieties that improve the deficiencies of the original ones and increase production.

[0003] During the use of the powder classifier, the air flow is used for sorting, so that the coarse and fine particles in the material are separated as much as possible and sent to their respective outlets. The air duct and cone of the existing powder classifier are severely eroded by wind sweeping during long-term operation. Each annual maintenance requires a lot of manpower, material, financial and time costs to repair the worn parts. Therefore, the utility model proposes a powder classifier air duct equipped with wear-resistant ceramic patches to solve the above problems. Utility Model Content

[0004] In view of the above problems, the present invention proposes a powder classifier air duct equipped with wear-resistant ceramic patches to solve the problem of serious wind erosion of the air duct and cone of the powder classifier in the prior art during long-term operation.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a powder classifier air duct equipped with wear-resistant ceramic patches, including an air duct main body, the air duct main body is composed of a feed channel and an air inlet, a transfer pipe is provided between the feed channel and the air inlet, a crushing mechanism is provided inside the transfer pipe, and a magnetic patch is provided inside the feed channel.

[0006] A further improvement is that the crushing mechanism includes a mesh cover, a rotating shaft, crushing blades and sieve holes, one end of the transfer tube is fixedly connected to the mesh cover, the interior of the mesh cover is rotatably connected to the rotating shaft, one end of the rotating shaft is equidistantly fixedly connected to multiple crushing blades, and the interior of the mesh cover has equidistantly distributed sieve holes in an annular shape.

[0007] A further improvement is that a partition is provided inside the transfer tube, a motor is fixedly installed on the end of the transfer tube away from the mesh cover, and the end of the rotating shaft away from the crushing blade passes through the interior of the partition and is fixedly connected to the output end of the motor.

[0008] A further improvement is that the outside of the transfer pipe is connected to a connecting pipe, one end of the connecting pipe and the transfer pipe are fixedly connected to a flange, a plurality of connecting holes are provided inside the flange, and bolts are inserted into the connecting holes.

[0009] A further improvement is that one end of the conveying channel and the air inlet are fixedly connected to a collecting hopper, one end of the two collecting hoppers is docked with one end of the connecting pipe or the transfer pipe, and a bolt passes through one end of the collecting hopper and is threadedly connected with a nut.

[0010] A further improvement is that a rectangular groove is provided inside the air inlet, a protective net is engaged inside the rectangular groove, and the protective net is detachably connected to the air inlet by bolts.

[0011] A further improvement is that a layer of wear-resistant ceramic sheet is provided on the outside of the magnetic patch, the wear-resistant ceramic sheet is set to be alumina ceramic, and the thickness is set to 8MM, and the inside of the magnetic patch is connected to the external power line through a wire.

[0012] The beneficial effects of the present invention are as follows: the output end of the motor can drive the rotating shaft to rotate inside the transfer pipe, and the rotating shaft drives the crushing blade to rotate inside the mesh cover. When the crushing blade contacts the iron filings, it will crush them into iron powder. The iron powder passes through the sieve holes and out of the mesh cover, and is then transported to the inside of the feed channel through the connecting pipe. The wear-resistant ceramic sheet on the outside of the magnetic patch can prevent the scouring force from directly acting on the inside of the feed channel. When the magnetic patch is energized, it generates magnetism, and adsorbs the iron powder on the inner wall of the feed channel to form a secondary protective layer, so as to solve the problem of serious wind erosion of the air duct and cone of the powder classifier in the prior art during long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the main view of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the pulverizing mechanism of the utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the air duct of the present utility model.

[0016] Among them: 1. Air duct main body; 2. Feed channel; 3. Air inlet; 4. Transfer pipe; 5. Protective net; 6. Magnetic patch; 7. Connecting pipe; 8. Mesh cover; 9. Motor; 10. Partition; 11. Rotating shaft; 12. Crushing blade; 13. Sieve hole; 14. Flange; 15. Connecting hole. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0018] according to Figure 1 、 2 As shown in Figure 3, this embodiment proposes an air duct of a powder classifier equipped with wear-resistant ceramic patches, including an air duct body 1, wherein the air duct body 1 is composed of a feed channel 2 and an air inlet 3, a transfer pipe 4 is provided between the feed channel 2 and the air inlet 3, a crushing mechanism is provided inside the transfer pipe 4, and a magnetic patch 6 is provided inside the feed channel 2. During the use of the powder classifier, the air flow is utilized for sorting, and the fine powder material flows at high speed under the action of negative pressure, and will enter the protective net 5, the transfer pipe 4 and the feed channel 2 in turn for transportation. After a period of time, the inside of the feed channel 2 will be eroded and worn, and the magnetic patch 6 inside the feed channel 2 absorbs iron powder to form an extra-long protective layer, which protects the air duct body 1 from erosion and reduces the frequency and cost of repairing the air duct body 1. The crushing mechanism can crush the iron filings that are not completely crushed into iron powder, so that the adsorption effect of the magnetic patch 6 is better.

[0019] The crushing mechanism includes a mesh cover 8, a rotating shaft 11, a crushing blade 12 and a sieve hole 13. One end of the transfer tube 4 is fixedly connected to the mesh cover 8, and the interior of the mesh cover 8 is rotatably connected to the rotating shaft 11. One end of the rotating shaft 11 is equidistantly fixedly connected to multiple crushing blades 12, and the interior of the mesh cover 8 is equidistantly annularly distributed with sieve holes 13.

[0020] A partition 10 is provided inside the transfer pipe 4 , and a motor 9 is fixedly installed on one end of the transfer pipe 4 away from the mesh cover 8 . The end of the rotating shaft 11 away from the crushing blade 12 passes through the interior of the partition 10 and is fixedly connected to the output end of the motor 9 .

[0021] The output end of the motor 9 can drive the rotating shaft 11 to rotate inside the transfer pipe 4, and the rotating shaft 11 drives the crushing blade 12 to rotate inside the mesh cover 8. When the crushing blade 12 comes into contact with the iron filings, it will crush them into iron powder. The iron powder passes through the sieve hole 13 and out of the mesh cover 8, and then is transported to the inside of the feed channel 2 through the connecting pipe 7. The partition 10 can separate the motor 9 from the iron powder, thereby protecting the motor 9.

[0022] The outside of the transfer pipe 4 is connected to a connecting pipe 7 , and one end of the connecting pipe 7 and the transfer pipe 4 are fixedly connected to a flange 14 . A plurality of connecting holes 15 are provided inside the flange 14 , and bolts are inserted into the connecting holes 15 .

[0023] The conveying channel 2 and one end of the air inlet 3 are fixedly connected to a collecting hopper, one end of the two collecting hoppers is connected to one end of the connecting pipe 7 or the transfer pipe 4, and a bolt passes through one end of the collecting hopper and is threadedly connected with a nut.

[0024] Connect the material conveying channel 2 and the collecting hopper at one end of the air inlet 3 to the connecting pipe 7 and one end of the transfer pipe 4 respectively. When the flange 14 is aligned with the connecting hole 15 on the collecting hopper, insert the bolt into the connecting hole 15, and then tighten the nuts at both ends of the bolt to connect the material conveying channel 2, the air inlet 3 and the transfer pipe 4 into one.

[0025] A rectangular groove is provided inside the air inlet 3, and a protective net 5 is engaged inside the rectangular groove. The protective net 5 is detachably connected to the air inlet 3 by bolts. The protective net 5 is engaged with the rectangular groove inside the air inlet 3, and then the protective net 5 is fixed to the inside of the air inlet 3 with bolts. The protective net 5 plays a screening role on the air inlet 3 to prevent larger foreign objects from entering and causing damage.

[0026] A layer of wear-resistant ceramic sheet is provided on the outside of the magnetic patch 6. The wear-resistant ceramic sheet is set to alumina ceramic and has a thickness of 8MM. The inside of the magnetic patch 6 is connected to the external power line through a wire. The wear-resistant ceramic sheet on the outside of the magnetic patch 6 can prevent the scouring force from directly acting on the inside of the conveyor 2. After the magnetic patch 6 is energized, it generates magnetism and adsorbs the iron powder on the inner wall of the conveyor 2 to form a secondary protective layer.

[0027] In the air duct of the powder classifier, the output end of the motor 9 can drive the rotating shaft 11 to rotate inside the transfer pipe 4, and the rotating shaft 11 drives the crushing blade 12 to rotate inside the mesh cover 8. When the crushing blade 12 comes into contact with the iron filings, it will crush them into iron powder. The iron powder passes through the sieve hole 13 and out of the mesh cover 8. Then, it is transported to the inside of the feed channel 2 through the connecting pipe 7. The wear-resistant ceramic sheet on the outside of the magnetic patch 6 can prevent the scouring force from directly acting on the inside of the feed channel 2. After the magnetic patch 6 is energized, it generates magnetism and adsorbs the iron powder on the inner wall of the feed channel 2 to form a secondary protective layer.

[0028] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A powder concentrator air duct equipped with a wear-resistant ceramic patch, comprising an air duct body (1), characterized in that: The air duct body (1) is composed of a conveying channel (2) and an air inlet (3); a transfer pipe (4) is provided between the conveying channel (2) and the air inlet (3); a crushing mechanism is provided inside the transfer pipe (4); and a magnetic patch (6) is provided inside the conveying channel (2); The crushing mechanism comprises a mesh cover (8), a rotating shaft (11), a crushing blade (12) and sieve holes (13); one end of the transfer pipe (4) is fixedly connected to the mesh cover (8); the interior of the mesh cover (8) is rotatably connected to the rotating shaft (11); one end of the rotating shaft (11) is fixedly connected to a plurality of crushing blades (12) at equal intervals; and the interior of the mesh cover (8) is annularly distributed with equal intervals.

2. The powder concentrator air duct equipped with a wear-resistant ceramic patch according to claim 1, characterized in that: A partition (10) is provided inside the transfer pipe (4); a motor (9) is fixedly mounted on one end of the transfer pipe (4) away from the mesh cover (8); and an end of the rotating shaft (11) away from the crushing blade (12) passes through the interior of the partition (10) and is fixedly connected to the output end of the motor (9).

3. The powder concentrator air duct equipped with wear-resistant ceramic patches according to claim 1, characterized in that: The outer side of the transfer pipe (4) is connected to a connecting pipe (7), and one end of the connecting pipe (7) and the transfer pipe (4) are fixedly connected to a flange (14). A plurality of connecting holes (15) are provided inside the flange (14), and bolts are inserted into the connecting holes (15).

4. The powder concentrator air duct equipped with wear-resistant ceramic patches according to claim 3 is characterized in that: One end of the conveying channel (2) and the air inlet (3) are both fixedly connected to a collecting hopper, one end of the two collecting hoppers is connected to one end of the connecting pipe (7) or the transfer pipe (4), and a bolt passes through one end of the collecting hopper and is threadedly connected with a nut.

5. The powder concentrator air duct equipped with wear-resistant ceramic patches according to claim 1, characterized in that: A rectangular groove is provided inside the air inlet (3), a protective net (5) is engaged inside the rectangular groove, and the protective net (5) is detachably connected to the air inlet (3) via bolts.

6. The powder concentrator air duct equipped with wear-resistant ceramic patches according to claim 1, characterized in that: A layer of wear-resistant ceramic sheet is provided on the outside of the magnetic patch (6), the wear-resistant ceramic sheet is made of alumina ceramic and has a thickness of 8 mm, and the inside of the magnetic patch (6) is connected to an external power line through a wire.

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