阅读说明：本技术 一种高分散涡流选粉机 (High dispersion vortex powder concentrator ) 是由 吕海峰 曹海宁 徐中州 于 2019-10-25 设计创作，主要内容包括：本发明公开了一种高分散涡流选粉机,包括壳体、动力机构、顶部分离机构、底部分离机构,所述动力机构包括驱动器、传动轴、轴承；所述顶部分离机构包括弧形导向叶片、笼形转子、转笼撒料盘,所述转笼撒料盘上方的壳体侧壁设置有进料口和出风口,所述弧形导向叶片外侧的壳体侧壁设置有进风口。所述底部分离机构位于所述顶部分离机构正下方,所述底部分离机构包括立体分散撒料盘、环向叶片,所述环向叶片底部设置有粗粉锥,所述粗粉锥底部连接有粗粉口,所述粗粉口连接收纳容器或水泥球磨机入口。本发明改用顶部进料、新型立体撒料盘和新型笼形转子同时驱动、中部进风、底部补风方式等,充分打散团状颗粒,分离效率高,提高成品产量,使用寿命长。(The invention discloses a high-dispersion vortex powder concentrator, which comprises a shell, a power mechanism, a top separation mechanism and a bottom separation mechanism, wherein the power mechanism comprises a driver, a transmission shaft and a bearing; the top separating mechanism comprises arc guide blades, a cage-shaped rotor and a rotating cage spreading disc, a feeding hole and an air outlet are formed in the side wall of the shell above the rotating cage spreading disc, and an air inlet is formed in the side wall of the shell outside the arc guide blades. Bottom separating mechanism is located under the top separating mechanism, bottom separating mechanism includes that the stereodispersion spills charging tray, hoop blade bottom is provided with the middlings awl, the middlings awl bottom is connected with the middlings mouth, the coarse powders mouth is connected with receiver or cement ball mill entry. The invention changes the modes of top feeding, novel three-dimensional material spreading disc and novel cage-shaped rotor simultaneous driving, middle air inlet, bottom air supplement and the like, fully breaks up the bulk particles, has high separation efficiency, improves the yield of finished products and has long service life.)

1. The utility model provides a high dispersion vortex selection powder machine which characterized in that: comprises a shell (15), a power mechanism, a top separating mechanism and a bottom separating mechanism,

the shell (15) is fixed on the attachment through a support, the shell (15) comprises a cylinder shape and a cone shape, the top of the shell (15) is provided with a driver (5) of a power mechanism, the inside of the shell (15) is provided with a top separating mechanism and a bottom separating mechanism from top to bottom,

the power mechanism comprises a driver (5), a transmission shaft (13) and a bearing (12), the driver (5) drives the transmission shaft (13) to vertically rotate through a coupler, the transmission shaft (13) is connected with an internal mechanism of a shell (15) through the bearing (12) and a bearing seat, the transmission shaft (13) drives the rotating parts of the top separating mechanism and the bottom separating mechanism to rotate through keys or splines, the bottom of the transmission shaft (13) is fixed through a support rod,

the top separating mechanism is arranged in the middle of the shell (15) and comprises arc-shaped guide blades (3), a cage-shaped rotor (4) and a rotating cage spreading disc (6), a feeding hole (1) and an air outlet (10) are formed in the side wall of the shell (15) above the rotating cage spreading disc (6), and the air outlet (10) is connected with a dust removing cloth bag and an exhaust fan; an air inlet (7) is formed in the side wall of the shell (15) on the outer side of the arc-shaped guide blade (3), and the air inlet (7) is connected with a fan; the cage-shaped rotor (4) and the rotating cage spreading disc (6) can rotate under the driving of a transmission shaft (13) of the power mechanism; a plurality of arc-shaped guide blades (3) are uniformly and annularly and fixedly arranged on the outer side of the cage-shaped rotor (4),

the bottom separating mechanism is positioned under the top separating mechanism and comprises a three-dimensional dispersing material spreading disc (2) and a plurality of annular blades (11), the annular blades (11) are annularly and uniformly fixedly connected to the bottom of the three-dimensional dispersing material spreading disc (2), the three-dimensional dispersing material spreading disc (2) is driven by the transmission shaft (13), an air supplementing opening (8) is formed in the side wall of the shell (15) on the outer side of each annular blade (11), and the air supplementing opening (8) is connected with a fan; a coarse powder cone (14) is arranged at the bottom of the annular blade (11), a coarse powder port (9) is connected to the bottom of the coarse powder cone (14), the coarse powder port (9) is connected with an inlet of a storage container or a cement ball mill,

and the air flow of the air inlet (7) and the air supplement port (8) tangentially enters along the outer ring of the transmission shaft (13).

2. The high dispersion vortex powder concentrator of claim 1, wherein: in order to reduce the influence of the vibration of the fan on the foundation and enable the whole machine to operate stably, the fans of the air inlet (7), the air supplementing opening (8) and the air outlet (10) are installed on the shell (15) through elastic shock absorption pads.

3. The high dispersion vortex powder concentrator of claim 1, wherein: the driver (5) is a servo motor.

4. The high dispersion vortex powder concentrator of claim 1, wherein: the dynamic balance precision of the power mechanism is below G6.3 level.

5. The high dispersion vortex powder concentrator of claim 1, wherein: in order to meet different powder selection requirements, the deflection angles of the annular blades (11) and the arc-shaped guide blades (3) are adjustable.

6. The high dispersion vortex powder concentrator of claim 5, wherein: the bearing (12) is provided with a plurality of bearings, and the bearing (12) adopts a double-sealing ring structure of air sealing and framework oil sealing.

7. The high dispersion vortex powder concentrator of claim 6, wherein: three-dimensional dispersion spills charging tray (2), rotating cage spills charging tray (6) surface and carries out hardfacing, arc guide vane (3), hoop blade (11) surface post have wear-resisting pottery, casing (15) inner wall is provided with wear-resisting alloy plate inside lining.

8. A high dispersion vortex powder concentrator as claimed in any one of claims 1 to 7, wherein: the number of the feed inlets (1) is four, and the feed inlets are uniformly arranged on the shell (15) in an annular mode.

Technical Field

The invention belongs to the field of powder selecting machinery, and particularly relates to a high-dispersion vortex powder selecting machine.

Background

The cement production mostly adopts a cement ball mill, the cement ball mill grinds the cement and then enters a powder selecting machine for powder selection, the fine cement powder meeting the particle size requirement is separated out, and the coarse particles enter the cement ball mill again for grinding. The existing powder concentrator has the following problems:

1. due to the electrostatic adsorption effect, the bulk particles are not fully dispersed, and part of cement fine powder enters the cement ball mill again along with the coarse particles, so that the finished product yield is reduced, the workload of the cement ball mill is increased, and energy is wasted;

2. the cement particles run at high speed, the wear rate of a material scattering plate, a blade, a lining and the like is high, and the service life of equipment is short;

3. the bearing driving the central shaft of the material scattering disc is easy to feed ash, so that mechanical failure is caused, the leakage of bearing lubricating oil easily pollutes finished products, and the maintenance is troublesome.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to solve the technical problems that the existing powder concentrator cannot fully disperse cement bulk particles, so that the yield of finished products is reduced, the workload of a cement ball mill is increased, and energy is not saved; the powder concentrator has high wear rate of internal parts, and the connected bearings are easy to feed ash and leak lubricating oil.

In order to solve the above problems, the present invention provides the following technical solutions: a high dispersion vortex powder concentrator, which comprises a shell, a power mechanism, a top separation mechanism and a bottom separation mechanism,

the shell is fixed on the attachment through a support and comprises a cylinder shape and a cone shape, the top of the shell is provided with a driver of a power mechanism, the inside of the shell is provided with a top separation mechanism and a bottom separation mechanism from top to bottom,

the power mechanism comprises a driver, a transmission shaft and a bearing, the driver drives the transmission shaft to vertically rotate through a coupler, the transmission shaft is connected with the inner mechanism of the shell through the bearing and a bearing seat, the transmission shaft drives the rotating parts of the top separating mechanism and the bottom separating mechanism to rotate through keys or splines, the bottom of the transmission shaft is fixed through a support rod,

the top separating mechanism is arranged in the middle of the shell and comprises arc-shaped guide blades, a cage-shaped rotor and a rotating cage spreading disc, a feeding hole and an air outlet are formed in the side wall of the shell above the rotating cage spreading disc, and the air outlet is connected with a dust removing cloth bag and an exhaust fan; the side wall of the shell at the outer side of the arc-shaped guide blade is provided with an air inlet, and the air inlet is connected with a fan; the cage-shaped rotor and the rotating cage spreading disc can rotate under the driving of a transmission shaft of the power mechanism; a plurality of arc-shaped guide blades are uniformly and annularly and fixedly arranged on the outer side of the cage-shaped rotor,

the bottom separation mechanism is positioned under the top separation mechanism and comprises a three-dimensional dispersion spreading disc and a plurality of annular blades, the annular blades are annularly and uniformly fixedly connected to the bottom of the three-dimensional dispersion spreading disc, the three-dimensional dispersion spreading disc is driven by the transmission shaft, and the side wall of the shell, outside the annular blades, is provided with an air supply opening which is connected with a fan; a coarse powder cone is arranged at the bottom of the annular blade, a coarse powder port is connected at the bottom of the coarse powder cone and is connected with an inlet of a containing container or a cement ball mill,

and the air flow of the air inlet and the air supplement port enters along the tangential direction of the outer ring of the transmission shaft.

Furthermore, in order to reduce the influence of the vibration of the fan on the foundation and enable the whole machine to operate stably, the fans of the air inlet, the air supply port and the air outlet are installed on the shell through elastic shock absorption pads.

Further, the driver is a servo motor.

Further, the dynamic balance precision of the power mechanism is below G6.3 level.

Furthermore, in order to meet different powder selection requirements, the deflection angles of the annular blades and the arc-shaped guide blades are adjustable.

Furthermore, the bearing is provided with a plurality of bearings, and the bearing adopts a double-sealing ring structure of air sealing and framework oil sealing.

Further, the three-dimensional dispersion spills charging tray, the rotating cage spills the charging tray surface and carries out hardfacing, arc guide vane, hoop blade surface subsides have wear-resisting pottery, shells inner wall is provided with wear-resisting alloy plate inside lining.

Furthermore, the number of the feed inlets is four, and the feed inlets are uniformly arranged on the shell in an annular mode.

The invention has the beneficial effects that:

1. advanced classification principle

Structural design is comparatively unique, changes into top feeding, novel three-dimensional charging tray and novel cage shape rotor simultaneous drive, middle part air inlet, bottom tonifying wind mode etc. and has integrated hierarchical principle such as three-dimensional vortex dispersion, plane vortex are hierarchical, gravity subsides classification, centrifugal settlement classification, has realized the multiple-stage separation.

2. Wide application range and convenient and fast fineness control

The rotating speed of the cage rotor, the rotating speed of the three-dimensional scattering disc and the air quantity are controlled by variable frequency speed regulation, and the method is suitable for the processing process of powder with different density and different fineness requirements, such as cement. The fineness control can be realized conveniently only by controlling the rotating speed of the rotating cage and the material spreading disc and the air quantity of the fan, the adjusting range is wide, and the fineness adjustment is convenient, sensitive and reliable.

3. High grading efficiency, good finished product quality and large energy-saving range

When the powder concentrator is driven by two spreading discs, the materials are fed from the top, and when the incoming materials pass through the spreading discs, the materials are dispersed in a vortex manner, so that the electrostatically adsorbed bulk particles are fully dispersed and scattered due to the vortex. The air flows into a rotating cage of the powder concentrator along with the air flow through the arc-shaped guide blades to carry out accurate classification. More fine powder is collected as a finished product, and the proportion of the fine powder entering a cement ball mill is reduced. The CFD flow field analysis digital simulation is adopted during the whole equipment design, and the streamline design is adopted in the system, so that the system resistance is obviously reduced, and the energy-saving effect is very obvious.

4. The service life is long. The wear-resistant process treatment is carried out on easily-worn parts such as the grading spreading disc, the guide blade, the rotor grading blade, the rotor wind locking blade, the coarse powder cone and the like, and a novel wear-resistant alloy plate is used as the lining of the grader, so that the wear rate is greatly reduced, and the service life of equipment is effectively prolonged.

5. The cooling of the lower bearing of the powder concentrator adopts a double-sealing ring structure of air sealing and framework oil sealing, two major problems of lubricating oil leakage and bearing dust inlet are effectively solved, and the service life of the lower bearing is effectively prolonged.

6. Dynamic balance tests are carried out before the complete machine leaves a factory, and the dynamic balance precision of the grading machine is guaranteed to reach G6.3 level; the circulating fan matched with the grader is of an integral steel structure foundation and is installed on the foundation through the elastic damping pad, so that the influence of the vibration of the fan on the foundation is reduced, and the whole machine is very stable in operation.

Drawings

Fig. 1 is a schematic front view partially in section of the high dispersion vortex powder concentrator of the present invention.

In the figure: 1. a feed inlet; 2. three-dimensional dispersion material spreading discs; 3. an arc-shaped guide blade; 4. a cage rotor; 5. a driver; 6. a rotating cage material spreading disc; 7. an air inlet; 8. an air supply opening; 9. coarse powder opening; 10. an air outlet; 11. circumferential blades; 12. a bearing; 13. a drive shaft.

Detailed Description

The details of the present invention are described below with reference to the accompanying drawings and specific embodiments.

As shown in figure 1, the high dispersion vortex powder concentrator comprises a shell 15, a power mechanism, a top separation mechanism and a bottom separation mechanism,

the shell 15 is fixed on the attachment through a support, the shell 15 comprises a cylinder shape and a cone shape, the top of the shell 15 is provided with a driver 5 of a power mechanism, a top separation mechanism and a bottom separation mechanism are arranged in the shell 15 from top to bottom,

the power mechanism comprises a driver 5, a transmission shaft 13 and a bearing 12, the driver 5 drives the transmission shaft 13 to vertically rotate through a coupler, and the driver 5 is a servo motor. The transmission shaft 13 is connected with an internal mechanism of the shell 15 through a bearing 12 and a bearing seat, the bearing 12 is provided with a plurality of bearings, and the bearing 12 adopts a double-sealing ring structure of air sealing and framework oil sealing. The transmission shaft 13 drives the rotating parts of the top separating mechanism and the bottom separating mechanism to rotate through keys or splines, the bottom of the transmission shaft 13 is fixed through a support rod,

the top separating mechanism is arranged in the middle of the shell 15 and comprises arc-shaped guide blades 3, a cage-shaped rotor 4 and a rotating cage spreading tray 6, the side wall of the shell 15 above the rotating cage spreading tray 6 is provided with four feed inlets 1 and four air outlets 10, the four feed inlets 1 are annularly and uniformly arranged on the shell 15, and the air outlets 10 are connected with a dust removing cloth bag and an exhaust fan; the side wall of the shell 15 at the outer side of the arc-shaped guide blade 3 is provided with an air inlet 7, and the air inlet 7 is connected with a fan; the cage-shaped rotor 4 and the rotating cage spreading disc 6 can rotate under the driving of a transmission shaft 13 of the power mechanism; a plurality of arc-shaped guide blades 3 are uniformly and annularly and fixedly arranged on the outer side of the cage-shaped rotor 4,

bottom separating mechanism is located under the top separating mechanism, bottom separating mechanism includes that the stereodispersion spills charging tray 2, hoop blade 11 has a plurality ofly, and the annular evenly links firmly the stereodispersion spills charging tray 2 bottoms, in order to be suitable for different selection powder requirements, hoop blade 11 and 3 adjustable angle of deflection of arc guide blade. The three-dimensional dispersion spreading disc 2 is driven by the transmission shaft 13, the side wall of the shell 15 outside the annular blade 11 is provided with an air supply opening 8, and the air supply opening 8 is connected with a fan; a coarse powder cone 14 is arranged at the bottom of the annular blade 11, a coarse powder port 9 is connected at the bottom of the coarse powder cone 14, the coarse powder port 9 is connected with an inlet of a receiving container or a cement ball mill,

the air flow of the air inlet 7 and the air supply opening 8 tangentially enters along the outer ring of the transmission shaft 13, and in order to reduce the influence of the vibration of the fan on the foundation and ensure the stable operation of the whole machine, the fans of the air inlet 7, the air supply opening 8 and the air outlet 10 are installed on the shell 15 through elastic shock absorption pads.

The dynamic balance precision of the power mechanism is below G6.3 level, and the wear-resisting process comprises the following steps: the surface of the three-dimensional dispersion material spreading disc 2 and the surface of the rotating cage material spreading disc 6 are subjected to hardfacing, the surfaces of the arc-shaped guide blades 3 and the annular blades 11 are pasted with wear-resistant ceramics, and the inner wall of the shell 15 is provided with a wear-resistant alloy plate lining.

The working principle of the invention is as follows:

the two-stage vortex classification and vertical and horizontal sedimentation principles are adopted, the three-dimensional scattering disk 2 and the cage-shaped rotor 4 are driven by the same driving device, the frequency conversion and speed regulation of a driving motor are realized, the three-dimensional scattering disk can be scattered, the vortex dispersion is generated simultaneously, and the arc-shaped guide blades 3 on the outer side of the cage-shaped rotor 4 have the local vortex effect. Because the temperature of the powder concentrator is high, and the electrostatic adsorption is strong, the air supplement valve is arranged at the bottom of the equipment, so that the internal temperature of a circulating system can be reduced, and the materials can be secondarily sorted. The high-dispersion vortex powder concentrator can separate the superfine powder which cannot be separated by the traditional powder concentrator, improves the powder concentration rate and has higher finished product yield.

The working process of the invention is as follows:

the cement ball mill is used for preparing powder, conveying equipment is used for feeding the powder from a feeding hole 1 in the top of a shell 15 of the machine, superfine powder enters a three-dimensional dispersion area, airflow enters from a middle air inlet 7, the cement powder is dispersed by a material scattering disc rotating at a high speed under the action of a rotating cage material scattering disc 6, and high-speed airflow entering from the air inlet 7 generates local vortex in the three-dimensional dispersion area to scatter materials. Part of coarse particles in the dispersed superfine powder are thrown to the cylinder wall under the action of inertial centrifugal force. The fine powder in the coarse powder is dispersed in the separation device through the three-dimensional dispersion scattering plate 2, and is blown secondarily through the annular vortex airflow of the air supply opening 8, and the fine powder enters the rotating cage secondarily when passing through the action area of the annular blade 11 along with the airflow. Under the impact of the annular blades 11, the other part of coarse powder particles are thrown to the cylinder wall, lose kinetic energy after the impact and slide down along the inner wall surface, fall to the coarse powder receiving device and are discharged and returned to the grinding machine.

After passing through the circumferential blades 11, fine powder in the cement powder continuously rises to pass through the vertical arc-shaped guide blades 3 to enter a secondary separation area, and the ultrafine powder is thrown to the vertical guide blades under the action of centrifugal force to lose kinetic energy under the action of strong and stable plane vortex formed by the high-speed rotating cage-shaped rotor 4 along with high-speed airflow, falls into the coarse powder cone 14 and is discharged back to the mill through the coarse powder pipe. The fine powder meeting the requirement passes through the cage-shaped rotor 4 and enters the interior of the cage-shaped rotor, enters the bag-type dust collector along with the air flow, and is collected by the bag-type dust collector.

In conclusion, the invention changes the modes of top feeding, novel three-dimensional material spreading disc and novel cage-shaped rotor simultaneous driving, middle air inlet, bottom air supplement and the like, integrates the grading principles of three-dimensional eddy current dispersion, planar eddy current grading, gravity sedimentation grading, centrifugal sedimentation grading and the like, fully breaks up the bulk particles, realizes multi-stage separation, has high separation efficiency, improves the yield of finished products and reduces the energy consumption; the wear-resisting property of the parts is good, and the service life is long.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical spirit and features of the present invention, and the present invention is not limited thereto but may be implemented by those skilled in the art.