Rotor structure of powder concentrator

Abstract

The utility model discloses a rotor structure of a powder concentrator. The rotor structure comprises a rotor shaft, a rotor upper flange, a rotor middle flange, rotor blades and a rotor lower flange, through holes are formed in the middle parts of the rotor upper flange, the rotor middle flange and the rotor lower flange, a plurality of positioning marking lines are arranged on the rotor shaft, the rotor shaft penetrates through the through holes in the middle parts of the rotor upper flange, the rotor middle flange and the rotor lower flange, and the positioning marking lines on the rotor shaft are welded and fixed after being aligned with the through holes; the surfaces of the rotor upper flange, the rotor middle flange and the rotor lower flange are provided with a plurality of insertion notches which are uniformly distributed at intervals; and the rotor blades are inserted into the insertion notches and then are welded and fixed. The rotating shaft and the flanges are welded and fixed through the positioning marking lines on the rotating shaft, then the insertion notches in the surfaces of the rotor upper flange, the rotor middle flange and the rotor lower flange are correspondingly welded with the rotor blades, precision is high, errors are small, the rotor forming period is short, the manufactured rotor is good in balance, the powder concentrator operates stably, equipment faults can be reduced, and the production efficiency is improved. The operation rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder classifiers, in particular to a rotor structure of a powder classifier. Background Art

[0002] The structure of the original powder selector rotor is that each layer of flange in the rotor (such as the upper rotor flange, the middle rotor flange and the lower rotor flange) is welded separately; then the flanges of two adjacent layers (such as the lower rotor flange and the middle rotor flange) are supported and fixed by multiple round tubes, and the two ends of multiple rotor blades are welded to the circumference of the two adjacent layers of flanges according to the distance between the two adjacent layers of flanges and the appropriate spacing between the adjacent rotor blades. When the welding is completed, the two ends of the multiple rotor blades are welded to the circumference of the flanges of the remaining two adjacent layers according to the above method, that is, they are welded all the way up, and so on; because there is a gap between the flange and the round tube, and between the rotor blade and the flange , all rely on manual marking for positioning, which will produce certain errors. The verticality and roundness between the flanges will produce errors. The arrangement of the rotor blades on the circumference of the flange will produce certain errors in the radial and axial directions. The verticality of the rotor blades and the distance between the rotor blades will produce certain errors. Due to the large number of rotor blades and the large cumulative error, the rotor manufactured in this way, if the rotor requires a high speed of more than 500 revolutions per minute (RPM), the balance of the rotor will be very poor, and the balance of the rotor will affect the operation of the entire classifier system. The classifier system will shake greatly, affecting the normal operation of the building and the classifier. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a powder classifier rotor structure in view of the deficiencies of the above-mentioned prior art. The powder classifier rotor structure uses the positioning mark line on the rotating shaft to first weld the rotating shaft and the flange of each layer into an integral structure, and then the insertion grooves on the surfaces of the rotor upper flange, the rotor middle flange and the rotor lower flange are respectively plugged and welded with the corresponding rotor blades. The precision is high, the error is small, the rotor molding cycle is short, the manufactured rotor has good balance, the powder classifier runs smoothly, can reduce equipment failures and improve the operation rate; the insertion grooves of the rotor upper flange, the rotor middle flange and the rotor lower flange located in the same vertical direction are plugged and welded with the same rotor blade, and the operation process is simpler and more convenient.

[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0005] A powder classifier rotor structure comprises a rotor shaft, a rotor upper flange, a rotor middle flange, rotor blades and a rotor lower flange;

[0006] The middle parts of the rotor upper flange, the rotor middle flange and the rotor lower flange are all provided with through holes, and the rotor shaft is provided with a plurality of positioning marking lines. The rotor shaft passes through the through hole in the middle of the rotor upper flange, and one positioning marking line on the rotor shaft is aligned with the through hole in the middle of the rotor upper flange before the rotor shaft is welded and fixed to the rotor upper flange. The rotor shaft passes through the through hole in the middle of the rotor middle flange, and another positioning marking line on the rotor shaft is aligned with the through hole in the middle of the rotor middle flange before the rotor shaft is welded and fixed to the rotor middle flange. The rotor shaft passes through the through hole in the middle of the rotor lower flange, and another positioning marking line on the rotor shaft is aligned with the through hole in the middle of the rotor lower flange before the rotor shaft is welded and fixed to the rotor lower flange.

[0007] The surfaces of the rotor upper flange, the rotor middle flange and the rotor lower flange are provided with a plurality of insertion slots evenly and spaced apart in the circumferential direction, and the rotor blades are sequentially inserted into the insertion slots of the rotor upper flange, the insertion slots of the rotor middle flange and the insertion slots of the rotor lower flange, and the rotor blades are welded and fixed to the insertion slots of the rotor upper flange, the insertion slots of the rotor middle flange and the insertion slots of the rotor lower flange.

[0008] As a further improved technical solution of the utility model, the number of the insertion slots on the rotor upper flange, the insertion slots on the rotor middle flange, the insertion slots on the rotor lower flange and the rotor blades are the same, and the surfaces of the rotor upper flange, the rotor middle flange and the rotor lower flange are all provided with multiple insertion slots by wire cutting.

[0009] As a further improved technical solution of the utility model, the rotor upper flange, the rotor middle flange and the rotor lower flange have the same structure.

[0010] As a further improved technical solution of the utility model, there are multiple flanges in the rotor.

[0011] As a further improved technical solution of the utility model, the total number of the rotor upper flange, the rotor middle flange and the rotor lower flange is the same as the number of the positioning marking lines on the rotor shaft.

[0012] As a further improved technical solution of the utility model, one positioning mark line on the rotor shaft is aligned with the upper plane of the through hole or the lower plane of the through hole in the middle of the rotor upper flange, another positioning mark line on the rotor shaft is aligned with the upper plane of the through hole or the lower plane of the through hole in the middle of the rotor middle flange, and another positioning mark line on the rotor shaft is aligned with the upper plane of the through hole or the lower plane of the through hole in the middle of the rotor lower flange.

[0013] The beneficial effects of the utility model are:

[0014] The rotor structure of the powder selector uses the positioning mark line on the rotating shaft to weld the rotating shaft and each layer of flange to form an integral structure, and then the insertion notches on the surface of the rotor upper flange, rotor middle flange and rotor lower flange are respectively plugged and welded with the corresponding rotor blades. Finally, the outer circle of the rotor upper flange, rotor middle flange and rotor lower flange and the parts of the rotating shaft that need to be trimmed are processed as a whole. Due to the setting of the positioning mark line on the rotating shaft and the setting of the insertion notches on the surface of the rotor upper flange, rotor middle flange and rotor lower flange, the radial and axial errors of the spacing and verticality between the adjacent two layers of flanges and the arrangement of the rotor blades on the flange circumference are greatly reduced, and the accuracy is higher. Compared with the prior art, the rotor molding cycle is short, the manufactured rotor has good balance, the powder selector runs smoothly, can reduce equipment failures, and improve the operation rate; the insertion notches of the rotor upper flange, rotor middle flange and rotor lower flange located in the same vertical direction are plugged and welded with the same rotor blade, and the operation process is simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the structure of the rotor upper flange, rotor middle flange or rotor lower flange of the utility model. DETAILED DESCRIPTION

[0017] The specific implementation of the utility model is further described below according to the accompanying drawings:

[0018] like Figure 1 As shown, a powder classifier rotor structure includes a rotor shaft 1, a rotor upper flange 2, a rotor middle flange 4, rotor blades 3 and a rotor lower flange 5.

[0019] like Figure 2 As shown, the rotor upper flange 2, the rotor middle flange 4 and the rotor lower flange 5 have the same structure, a through hole 6 is provided in the middle thereof, and a plurality of positioning marking lines are provided on the surface of the rotor shaft 1. The rotor shaft 1 passes through the through hole 6 in the middle of the rotor upper flange 2, and one positioning marking line on the rotor shaft 1 is aligned with the upper plane or the lower plane of the through hole 6 in the middle of the rotor upper flange 2 before the rotor shaft 1 is welded and fixed to the rotor upper flange 2. The rotor shaft 1 passes through the through hole 6 in the middle of the rotor middle flange 4, and another positioning marking line on the rotor shaft 1 is aligned with the upper plane or the lower plane of the through hole 6 in the middle of the rotor middle flange 4 before the rotor shaft 1 is welded and fixed to the rotor middle flange 4. The rotor shaft 1 passes through the through hole 6 in the middle of the rotor lower flange 5, and another positioning marking line on the rotor shaft 1 is aligned with the upper plane or the lower plane of the through hole 6 in the middle of the rotor lower flange 5 before the rotor shaft 1 is welded and fixed to the rotor lower flange 5.

[0020] like Figure 2As shown, the surfaces of the rotor upper flange 2, the rotor middle flange 4 and the rotor lower flange 5 are provided with a plurality of insertion slots 7 evenly and spaced apart in the circumferential direction, and the rotor blades 3 are sequentially inserted into the insertion slots 7 of the rotor upper flange 2, the insertion slots 7 of the rotor middle flange 4 and the insertion slots 7 of the rotor lower flange 5, and the rotor blades 3 are welded and fixed to the insertion slots 7 of the rotor upper flange 2, the insertion slots 7 of the rotor middle flange 4 and the insertion slots 7 of the rotor lower flange 5.

[0021] In this embodiment, the number of the insertion slots 7 on the rotor upper flange 2, the insertion slots 7 on the rotor middle flange 4, the insertion slots 7 on the rotor lower flange 5, and the rotor blades 3 are the same, and the surfaces of the rotor upper flange 2, the rotor middle flange 4, and the rotor lower flange 5 are all provided with a plurality of insertion slots 7 by wire cutting.

[0022] In this embodiment, the rotor upper flange 2, the rotor middle flange 4 and the rotor lower flange 5 have the same structure.

[0023] In this embodiment, there are multiple flanges 4 in the rotor.

[0024] In this embodiment, the total number of the rotor upper flange 2 , the rotor middle flange 4 and the rotor lower flange 5 is the same as the number of the positioning marking lines on the rotor shaft 1 .

[0025] The powder classifier rotor structure provided in this embodiment belongs to a powder classifier rotor structure with a small diameter and a high speed, and the speed reaches more than 2900 revolutions per minute (RPM); the powder classifier rotor structure is a key component of the powder classifier system, and the manufacturing accuracy and balance requirements are high. The flange of this embodiment adopts the method of wire cutting processing notch, and the tolerance of the length and width of the insertion notch 7 is controlled within 0.1mm. The rotor blades 3 are all processed by laser. According to the spacing requirements between the two layers of flanges, a positioning mark line is set on the rotor shaft 1, and then the rotor upper flange 2 and the rotor middle flange are 4. After the upper plane or lower plane of the through hole 6 in the rotor lower flange 5 is aligned with the positioning mark line on the rotor shaft 1, it is welded to the rotor shaft 1. After the welding is completed, the rotor blades 3 are respectively inserted into the insertion slots 7 of the rotor upper flange 2, the rotor middle flange 4, and the rotor lower flange 5, and then welded and fixed to each other. After completion, the rotor is processed as a whole, and the outer circle of the rotor upper flange 2, the outer circle of the rotor middle flange 4, the outer circle of the rotor lower flange 5 and the rotor shaft 1 are processed synchronously. The rotor made in this way has good balance, the powder classifier runs smoothly, can reduce equipment failures, and improve the operation rate. The rotor shaft 1 of this embodiment is welded to each layer of flange as a whole, and then processed as a whole, and then dynamically balanced. It is suitable for high-speed powder classifier rotors, with a speed of more than 2900 revolutions per minute (RPM), and the finished product fineness can reach 500-1000 mesh (0.031---0.015mm), which can meet the fineness requirements of mineral powders in some precision industries such as chemical, industrial, and rubber.

[0026] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A powder classifier rotor structure, characterized in that: It includes a rotor shaft, a rotor upper flange, a rotor middle flange, rotor blades and a rotor lower flange; The middle parts of the rotor upper flange, the rotor middle flange and the rotor lower flange are all provided with through holes, and the rotor shaft is provided with a plurality of positioning marking lines. The rotor shaft passes through the through hole in the middle of the rotor upper flange, and one positioning marking line on the rotor shaft is aligned with the through hole in the middle of the rotor upper flange before the rotor shaft is welded and fixed to the rotor upper flange. The rotor shaft passes through the through hole in the middle of the rotor middle flange, and another positioning marking line on the rotor shaft is aligned with the through hole in the middle of the rotor middle flange before the rotor shaft is welded and fixed to the rotor middle flange. The rotor shaft passes through the through hole in the middle of the rotor lower flange, and another positioning marking line on the rotor shaft is aligned with the through hole in the middle of the rotor lower flange before the rotor shaft is welded and fixed to the rotor lower flange. The surfaces of the rotor upper flange, the rotor middle flange and the rotor lower flange are provided with a plurality of insertion slots evenly and spaced apart in the circumferential direction, and the rotor blades are sequentially inserted into the insertion slots of the rotor upper flange, the insertion slots of the rotor middle flange and the insertion slots of the rotor lower flange, and the rotor blades are welded and fixed to the insertion slots of the rotor upper flange, the insertion slots of the rotor middle flange and the insertion slots of the rotor lower flange.

2. The powder concentrator rotor structure according to claim 1, characterized in that: The number of the insertion slots on the rotor upper flange, the insertion slots on the rotor middle flange, the insertion slots on the rotor lower flange and the rotor blades are the same, and the surfaces of the rotor upper flange, the rotor middle flange and the rotor lower flange are all provided with a plurality of insertion slots by wire cutting.

3. The powder concentrator rotor structure according to claim 1, characterized in that: The rotor upper flange, rotor middle flange and rotor lower flange have the same structure.

4. The powder concentrator rotor structure according to claim 1, characterized in that: The rotor has a plurality of flanges.

5. The powder concentrator rotor structure according to claim 4, characterized in that: The total number of the rotor upper flange, the rotor middle flange and the rotor lower flange is the same as the number of the positioning marking lines on the rotor shaft.

6. The powder concentrator rotor structure according to claim 5, characterized in that: One positioning mark line on the rotor shaft is aligned with the upper plane of the through hole or the lower plane of the through hole in the middle of the rotor upper flange, another positioning mark line on the rotor shaft is aligned with the upper plane of the through hole or the lower plane of the through hole in the middle of the rotor middle flange, and another positioning mark line on the rotor shaft is aligned with the upper plane of the through hole or the lower plane of the through hole in the middle of the rotor lower flange.

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