CN211678774U

CN211678774U - Direct-drive transmission powder concentrator with motor placed inside rotor

Info

Publication number: CN211678774U
Application number: CN202020024377.1U
Authority: CN
Inventors: 竹永奎; 申占民; 赵剑波; 吕珂馨
Original assignee: Sinoma Tianjin Powder Technology & Equipment Co ltd; Tianjin Cement Industry Design and Research Institute Co Ltd
Current assignee: Sinoma Tianjin Powder Technology & Equipment Co ltd; Tianjin Cement Industry Design and Research Institute Co Ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-10-16
Anticipated expiration: 2030-01-07

Abstract

The utility model relates to a direct-drive transmission powder concentrator with a motor arranged inside a rotor, which comprises an upper shell, a lower shell, a motor, a rotor, a plurality of wind-guiding blades and a blanking cone, wherein a wind and material outlet is arranged right above the upper shell, and no barrier exists from the rotor to the top wind and material outlet; the motor is arranged in the rotor, an output shaft of the motor is connected with the rotor through a transmission assembly, the motor is fixed on the lower shell through a motor support frame, the motor support frame comprises a plurality of cross beams and a motor support plate, each cross beam is inserted from an opening on one side of the lower shell, penetrates through the blanking cone and then penetrates out from the other side of the lower shell; the motor supporting plate is fixed in the middle of the plurality of cross beams, and the motor bottom plate of the motor is fixed on the motor supporting plate. The utility model discloses can reduce equipment and technology structure cost by a wide margin, increase motor life, reduce selection powder machine maintenance number of times to reduce fan operation power consumption, have huge market space and popularization meaning.

Description

Direct-drive transmission powder concentrator with motor placed inside rotor

Technical Field

The utility model belongs to the technical field of the selection powder machine, especially, relate to a motor is placed in the inside transmission selection powder machine that directly drives of rotor.

Background

The material grinding and screening technology has been developed for many years, and the third generation powder selecting machine has been widely applied. The cyclone separator mainly utilizes the rotation of a rotor to generate cyclone, and when materials carried by wind pass through a cyclone area, the materials are screened under the action of centrifugal force, wind traction force and gravity. Under the traction action of wind, the materials with smaller centrifugal force and qualified particle size are brought to the outside of the powder concentrator and collected by a dust collector; and for the material with the unqualified particle size with larger centrifugal force, the material falls back to the grinding disc again under the self gravity and is ground again. Meanwhile, the material particles can be controlled to be subjected to centrifugal force according to the rotating speed of the rotor, so that the material particles with required specifications can be adjusted.

The existing third-generation powder concentrator has more models and mainly changes the shapes of rotor blades and wind guide blades. The driving part of the rotor is connected with a speed reducer by adopting a motor and then connected to the rotor through a transmission shaft system, so that the rotor is driven to rotate. Some improved structures replace the motor and the speed reducer by a permanent magnet motor, and the permanent magnet motor is connected to the rotor through a transmission shaft system to drive the rotor to rotate. The transmission structure of the existing powder concentrator needs the motor to be externally arranged on the upper shell, and the outlets of air and materials need to be led out from the side edge of the upper shell, so that the ventilation structure can cause larger local pressure difference and increase the power consumption of the fan. Meanwhile, a transmission shaft system arranged between the motor and the rotor needs to be maintained regularly, the phenomenon of bearing damage caused by machining precision or improper use often occurs in use, replacement and maintenance are frequent, and normal production is greatly influenced.

Disclosure of Invention

The utility model discloses a solve among the current selection powder machine structure transmission shafting maintenance frequent, wind and material outlet pressure differential are big, increase fan power consumption scheduling problem to a motor is placed in the inside transmission selection powder machine that directly drives of rotor, and this selection powder machine can reduce equipment and technological structure cost by a wide margin, increases motor life, reduces selection powder machine maintenance number of times, and reduces fan operation power consumption.

The utility model discloses a realize like this, a motor is placed in the interior direct drive transmission selection powder machine of rotor, including upper portion casing, lower part casing, motor, rotor, a plurality of wind-guiding blade and unloading cone, upper portion casing and lower part casing are connected, the motor drive rotor is rotatory, a plurality of wind-guiding blade ring direction evenly lay in the outside of rotor, the unloading cone is located the wind-guiding blade below; a wind and material outlet is arranged right above the upper shell, and no barrier exists from the rotor to the top wind and material outlet; the motor is arranged in the rotor, an output shaft of the motor is connected with the rotor through a transmission assembly, and the motor is fixed on the lower shell through a motor supporting frame.

In the above technical solution, preferably, the motor support frame includes a plurality of cross beams and a motor support plate, each cross beam is inserted from an opening at one side of the lower casing, passes through the blanking cone, and then passes out from the other side of the lower casing; the motor supporting plate is fixed in the middle of the plurality of cross beams, and a motor bottom plate of the motor is fixed on the motor supporting plate.

In the above technical solution, it is further preferable that a support plate for fixing the cross beam is fixed on the outer side wall of the lower casing located right below each cross beam, and the support plate is fixedly connected with the cross beam.

In the above technical solution, preferably, the motor is a speed-adjustable motor.

In the above technical scheme, preferably, the transmission assembly includes a motor shaft flange and a connecting flange, the middle of the motor shaft flange is connected with the motor output shaft, the outer ring of the motor shaft flange is connected with the inner ring of the connecting flange, and the outer ring of the connecting flange is connected with the rotor.

In the above technical scheme, preferably, the rotor is composed of a rotor support frame and a plurality of rotor blades, a rotor flange is arranged in the middle of the top of the rotor support frame, the rotor flange is connected with an outer ring of the connecting flange, fixing plates for mounting the rotor blades are respectively arranged on the upper side and the lower side of the outer ring of the rotor support frame, sealing rings are respectively arranged on the inner side and the outer side of the upper end portion of the rotor blade, and the sealing rings are fixed on the upper portion shell.

In the above aspect, it is further preferable that the rotor blade has a straight plate shape, an L-shape, or a U-shape.

In the above technical solution, preferably, the upper portion of the air guide blade is fixed on the lower casing, the lower portion of the air guide blade is fixed on the blanking cone, and the blanking cone is fixed on the lower casing through a plurality of support pipes.

In the above aspect, the air guide vane is preferably shaped as a swash plate or an N-type.

The patent has the advantages and positive effects that:

1. the utility model discloses a motor directly links its rotatory structure of rotor drive, compares with traditional structure, and the selection powder machine does not have parts such as speed reducer and transmission shafting, can reduce equipment weight and processing cycle by a wide margin, has reduced the height of equipment simultaneously, reduces the cost of follow-up process pipeline and civil engineering.

2. The utility model discloses a motor is placed inside the rotor, and the windy is kept apart completely, and the durability and the reliability of motor improve by a wide margin.

3. The utility model discloses a selection powder machine air outlet is located directly over the rotor, and sets up in upper portion casing top intermediate position, compares with traditional side setting, has reduced local pressure differential by a wide margin, reduces the fan power consumption.

4. The utility model discloses a selection powder machine simple structure, reasonable in design except the normal maintenance of motor, need not other transmission class work pieces and maintain, reduce the overhaul of the equipments number of times by a wide margin, reduce the maintenance cost.

Drawings

Fig. 1 is a schematic structural diagram of a powder concentrator provided in an embodiment of the present invention;

fig. 2 is a partial enlarged view of X in fig. 1.

In the figure: 1. a connecting flange; 2. a motor; 2a, a motor bottom plate; 2b, a motor shaft flange; 3. an upper housing; 4. a seal ring; 5. a rotor; 5a, a rotor support frame; 5b rotor blades; 5c a rotor flange; 6. wind guide blades; 7. a lower housing; 7a, a support plate; 7b, rib plates; 8. blanking cone; 9. supporting a tube; 10. a motor support frame; 10a, a motor supporting plate; 10b, a cross beam; v, wind and material flow direction; v1, wind and flow direction of qualified materials; v2, unqualified material flow direction.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified and will be described in detail with reference to the accompanying drawings:

referring to fig. 1 and 2, a direct-drive powder concentrator with a motor placed inside a rotor comprises an upper shell 3, a lower shell 7, a motor 2, a rotor 5, a plurality of air guide blades 6 and a discharging cone 8, wherein the upper shell 3 is fixed on the lower shell 7, the lower shell 7 is fixed on a shell in a vertical mill, the discharging cone 8 is fixed on the lower shell 7 through a supporting tube 9, an air and material inlet is formed between the discharging cone 8 and the lower shell 7, and the plurality of air guide blades 6 are uniformly and annularly fixed between the discharging cone 8 and the lower shell 7 and used for guiding air and materials into a rotational flow area generated by rotation of the rotor. The wind guide blades 6 are uniformly distributed on the outer side of the rotor 5 in the circumferential direction, a distance is reserved between each wind guide blade and the outer side of the rotor, the upper portions of the wind guide blades 6 are fixed on the lower portion shell 7, the lower portions of the wind guide blades 6 are fixed on the blanking cone 8, the blanking cone 8 is located below the wind guide blades 6 and used for collecting large-particle-size unqualified powder falling from the space between the rotor and the wind guide blades, guiding the powder onto the grinding disc again and grinding the powder again. An air and material outlet is arranged right above the upper shell 3, the air and material outlet is positioned right above the rotor 5, and no barrier exists at the top air and material outlet of the rotor 5; the motor 2 is arranged in the rotor 5, an output shaft of the motor 2 is connected with the rotor 5 through a transmission assembly to drive the rotor to rotate, and the motor 2 is fixed on the lower shell 7 through a motor support frame 10 to obtain support.

As a preferred embodiment, the motor support frame 10 includes a plurality of cross beams 10b and a motor support plate 10a, the cross beam 10b in this embodiment is made of a slender profile steel, two cross beams are adopted, each cross beam 10b is inserted from an opening hole at one side of the lower housing 7, penetrates through the blanking cone 8, and then penetrates out from the other side of the lower housing 7; the motor supporting plate 10a is fixed between the two beams 10b, and the motor bottom plate 2a of the motor is fixed on the motor supporting plate 10 a. After the cross beams are installed, the motor supporting plate is fixed between the two cross beams, and then the motor bottom plate is installed on the motor supporting plate. The motor support frame transfers the weight of the motor, the rotor and the working load to the lower shell. In this embodiment, the cross beams may also be arranged vertically or in other manners as required, and the number of the cross beams is adjusted according to the arrangement manner.

As a further preferred embodiment, a support plate 7a for fixing the cross beam is welded on the outer side wall of the lower casing 7 directly below each cross beam 10b, the support plate 7a is fixedly connected with the cross beam 10b, and the support plate is used for fixing the cross beam of the motor support frame. In the embodiment, a rib plate 7b is further arranged between each supporting plate 7a and the lower shell 7, so that the supporting plates are better fixed, and the motor is ensured to be stably installed.

As a preferred embodiment, the motor 2 is a speed-adjustable motor, and specifically, a permanent magnet motor or an asynchronous low-frequency motor can be adopted.

As preferred embodiment, transmission assembly includes motor shaft flange 2b and flange 1, motor shaft flange 2b middle part and motor output shaft, and motor shaft flange 2b outer lane links to each other with flange 1 inner circle, and flange 1 outer lane links to each other with rotor 5, and the drive rotor is rotatory, and it can be with motor and rotor separation to tear out flange, and the installation is dismantled conveniently, is convenient for maintain.

As the preferred embodiment, rotor 5 comprises rotor support frame 5a and a plurality of rotor blade 5b, is provided with rotor flange 5c in the middle of rotor support frame 5a top, and rotor flange 5c links to each other with 1 outer lane of flange, and the rotor support frame 5a outer lane is provided with the fixed plate that is used for installing rotor blade 5b respectively on the lower side respectively, can be according to actual conditions with whole fixed plate split during concrete implementation, and the rotor blade of a plurality of equipartition is installed to a plurality of fixed plate that the equipartition set up of splitting into. The inside and outside both sides of rotor blade 5b upper end all are provided with sealing ring 4, and sealing ring 4 is fixed on upper portion casing 3, prevents that the material from flowing through the rotor blade top not through the screening.

As a further preferred embodiment, the shape of the rotor blade 5b is a straight plate shape, an L-shape, a U-shape or other shapes.

In a preferred embodiment, the shape of the air guide vane 6 is a swash plate shape, an N-shape, or another shape.

The working principle of the utility model is as follows:

after the materials are ground on the grinding equipment, the materials with different grain diameters are simultaneously brought into the powder selecting machine under the driving of wind, as shown in the direction V of figure 1. Wind and materials pass through the wind guide blades 6 and enter a rotational flow area generated by the rotation of the rotor 5 to be screened. The material with unqualified large particle size cannot enter the rotor 5 along with wind because the centrifugal force is larger than the traction force of the wind, and falls into the blanking cone 8 below under the action of the gravity of the material, as shown in the direction V2 in figure 1, the material returns to the grinding equipment again for grinding again. Qualified materials with small particle sizes enter the rotor 5 along with wind because the centrifugal force is smaller than the traction force of the wind, flow out from the wind and material outlet at the upper part of the upper shell 3, and are collected at a subsequent dust collector as shown in the direction V1 in figure 1. The materials with different particle sizes are sorted by the circulation work.

When the motor needs to be overhauled, loosening the rotor flange 5c, the motor shaft flange 2b and the connecting flange 1, disassembling the connecting flange 1, and then lifting the motor 2 out of the rotor flange for overhauling; the motor is put into from rotor flange mouth department again after overhauing, and is fixed through flange 1 and motor 2, and the installation is dismantled conveniently.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.

Claims

1. A direct-drive transmission powder concentrator with a motor placed inside a rotor comprises an upper shell, a lower shell, the motor, the rotor, a plurality of air guide blades and a blanking cone, wherein the upper shell is connected with the lower shell, the motor drives the rotor to rotate, the plurality of air guide blades are uniformly distributed on the outer side of the rotor in the circumferential direction, and the blanking cone is positioned below the air guide blades; the wind and material outlet is arranged right above the upper shell, and no barrier exists from the rotor to the top wind and material outlet; the motor is arranged in the rotor, an output shaft of the motor is connected with the rotor through a transmission assembly, and the motor is fixed on the lower shell through a motor supporting frame.

2. The direct-drive transmission powder concentrator with the motor placed in the rotor as claimed in claim 1, wherein the motor support frame comprises a plurality of beams and a motor support plate, each beam is inserted from an opening at one side of the lower shell, penetrates through the blanking cone and then penetrates out from the other side of the lower shell; the motor supporting plate is fixed in the middle of the plurality of cross beams, and a motor bottom plate of the motor is fixed on the motor supporting plate.

3. The direct-drive transmission powder concentrator with the motor placed in the rotor as claimed in claim 2, wherein a support plate for fixing the cross beams is fixed on the outer side wall of the lower casing right below each cross beam, and the support plate is fixedly connected with the cross beams.

4. The direct-drive powder concentrator with the motor placed inside the rotor as recited in claim 1, wherein the motor is a speed-adjustable motor.

5. The direct-drive transmission powder concentrator with the motor placed inside the rotor as claimed in claim 1, wherein the transmission assembly comprises a motor shaft flange and a connecting flange, the middle part of the motor shaft flange is connected with a motor output shaft, the outer ring of the motor shaft flange is connected with the inner ring of the connecting flange, and the outer ring of the connecting flange is connected with the rotor.

6. The direct-drive powder concentrator with the motor placed inside the rotor as claimed in claim 1, wherein the rotor is composed of a rotor support frame and a plurality of rotor blades, a rotor flange is arranged in the middle of the top of the rotor support frame and connected with an outer ring of a connecting flange, fixing plates for mounting the rotor blades are respectively arranged on the upper side and the lower side of the outer ring of the rotor support frame, sealing rings are respectively arranged on the inner side and the outer side of the upper end portion of each rotor blade, and the sealing rings are fixed on the upper shell.

7. The direct-drive transmission powder concentrator with the motor placed inside the rotor as claimed in claim 6, wherein the rotor blades are straight, L-shaped or U-shaped.

8. The direct-drive powder concentrator with the motor placed inside the rotor as claimed in claim 1, wherein the upper part of the air guide blade is fixed on the lower shell, the lower part of the air guide blade is fixed on the blanking cone, and the blanking cone is fixed on the lower shell through a plurality of support pipes.

9. The direct-drive transmission powder concentrator with the motor placed inside the rotor as claimed in claim 1, wherein the air guide blades are in an inclined plate shape or an N-shaped shape.