Limestone powder air concentrator

Abstract

The utility model discloses an air powder concentrator for limestone powder, which comprises a powder concentration barrel, a powder concentrator and an induced draft fan are arranged at the upper end of the powder concentration barrel, a material distribution mechanism is arranged in the powder concentration barrel and positioned below the powder concentrator, and the material distribution mechanism comprises a material distribution bin which is fixedly arranged on the inner wall of the powder concentration barrel and is used for storing the limestone powder. Compared with the prior art, the limestone powder air selecting machine has the advantages that the limestone powder air selecting machine comprises the material distributing mechanism and the air distributing device, caked limestone powder is fully scattered through the scattering mechanism of the material distributing mechanism, the air distributing device is arranged on the material distributing mechanism, and therefore the limestone powder can be separated from the air distributing device. According to the limestone powder selecting device, the limestone powder is more uniformly dispersed into the powder selecting barrel body through the material distributing openings formed in the circumferential direction of the inner wall of the powder selecting barrel body, the dispersed materials are uniformly raised upwards through the air distributing device, powder gathering is avoided, and therefore the powder selecting efficiency of the limestone powder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder sorting, in particular to a limestone powder air classifier. Background Art

[0002] As an important industrial raw material, limestone powder is widely used in industries such as building materials, cement production, and metallurgy. However, due to the characteristics of large particle size and irregular shape of limestone powder, there are many problems in its use process, such as difficult separation, serious agglomeration, and high mud content. These problems lead to low use efficiency of limestone powder and also pose challenges to environmental protection. Therefore, it is particularly important to develop an efficient limestone powder classifier.

[0003] Existing classifiers, such as a dynamic classifier of the Chinese utility model patent with the application number 202223123576.6, have the feed pipe and the air inlet pipe arranged on the same side, which to a certain extent restricts the flow and distribution of the powder. This results in the powder not being well lifted when entering the classification chamber, thus affecting the classification effect. This situation greatly restricts the application scope of the existing classification technology and also increases the production cost.

[0004] In summary, there are certain problems in the existing limestone powder classification technology, which need further research and improvement. Summary of the Utility Model

[0005] In view of the above situation, to overcome the defects of the existing technology, the utility model provides a limestone powder air classifier to solve the above problems.

[0006] To achieve the above purpose, a limestone powder air classifier of the utility model includes a classification cylinder body. A classifier and an induced draft fan are provided at the upper end of the classification cylinder body. A feeding mechanism is arranged below the classifier inside the classification cylinder body. The feeding mechanism includes a feeding bin fixedly arranged on the inner wall of the classification cylinder body for storing limestone powder. The feeding bin is provided with feeding ports, and the feeding ports are equidistantly distributed around the axis of the classification cylinder body. A dispersing mechanism for dispersing limestone powder is arranged in the feeding bin. A air distribution device is provided at the lower end of the classification cylinder body.

[0007] Preferably, the air distribution device includes an air distribution pipe fixed to the classification cylinder body, an air distribution plate fixed to the air distribution pipe, and through holes penetrating through the air distribution plate.

[0008] Preferably, a feed pipe is provided on the side of the classification cylinder body, and the feed pipe is connected with a feed hopper.

[0009] Preferably, a star-shaped feeding valve is installed at the lower end of the feed hopper.

[0010] Preferably, the dispersing mechanism includes an annular slide rail fixed to the inner wall of the fabric bin, a rotating frame rotatably limited within the slide rail, a material turning shovel plate fixed to the rotating frame, and a driving assembly disposed within the fabric bin for driving the rotation of the rotating frame.

[0011] Preferably, a powder receiving groove is provided on the inner wall of the powder selecting cylinder body between the powder selector and the fabric mechanism.

[0012] Preferably, the fabric outlet is connected to a fabric pipe. The other end of the fabric pipe connected to the fabric outlet is inclined downward and points to the center of the powder selecting cylinder body. A material dropping port is provided through the bottom of the fabric pipe along the length direction, and a vibrator is installed on the fabric pipe.

[0013] Compared with the prior art, the present utility model has the following advantages: The present utility model provides a limestone powder air classifier, including a fabric mechanism and an air distribution device. The caked stone powder is fully dispersed by the dispersing mechanism of the fabric mechanism. The stone powder is more evenly dispersed into the powder selecting cylinder body through the fabric outlets circumferentially arranged around the inner wall of the powder selecting cylinder body. The dispersed materials are evenly lifted upward by the air distribution device, avoiding the aggregation of powder materials, thereby improving the powder selecting efficiency of limestone powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0015] Figure 1 is a schematic structural diagram of Embodiment 1 of the present utility model.

[0016] Figure 2 is a schematic structural diagram of Embodiment 2 of the present utility model.

[0017] Figure 3 is a three-dimensional structural diagram of the fabric mechanism of Embodiment 2 of the present utility model.

[0018] In the figure: 10, powder selecting cylinder body; 20, powder selector; 30, induced draft fan; 40, fabric mechanism; 41, fabric bin; 42, fabric outlet; 50, air distribution device; 51, air distribution pipe; 52, air distribution plate; 53, through hole; 60, dispersing mechanism; 61, slide rail; 62, rotating frame; 63, material turning shovel plate; 64, driving assembly; 641, motor; 642, gear; 643, gear ring; 70, powder receiving groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes in detail the specific embodiments of the present utility model with reference to the attached Figures 1-3 drawings.

[0020] Embodiment 1

[0021] A limestone powder air classifier, comprising a classification cylinder body 10, a classifier 20 and an induced draft fan 30 are provided at the upper end of the classification cylinder body 10. The classifier 20 includes a classification rotor and a motor fixedly installed on the classification cylinder body 10 for driving the classification rotor to rotate. The induced draft fan 30 is used to generate a negative pressure at the upper end of the classification cylinder body 10 to suck away the qualified powder after classification. It can be connected to a cyclone separator to remove the dust in the screened powder through the cyclone separator. A feeding mechanism 40 is provided inside the classification cylinder body 10 below the classifier 20. The feeding mechanism 40 is used to evenly spread the material into the classification cylinder body 10. And the feeding mechanism 40 includes a feeding bin 41 fixedly arranged on the inner wall of the classification cylinder body 10 for storing limestone powder. The feeding bin 41 is provided with a feeding port 42. The feeding port 42 is inclined downward and is equidistantly distributed around the axis of the classification cylinder body 10. A dispersing mechanism 60 for dispersing the limestone powder is provided in the feeding bin 41. A air distribution device 50 is provided at the lower end of the classification cylinder body 10. During classification, limestone powder is added to the feeding bin 41, and the agglomerated limestone powder is dispersed by the dispersing mechanism 60. During the dispersing process, under the action of gravity, the limestone powder flows out from the periphery of the inner wall of the classification cylinder body 10 through the feeding port 42. And under the action of the wind force of the air distribution device 50, the limestone powder is lifted upward to the upper part of the classification cylinder body 10. When the limestone powder reaches the position of the classifier 20, the classification rotor of the classifier 20 rotates to generate a vortex. Under the action of centrifugal force, the lime powder with a larger gravity is thrown towards the inner wall of the classification cylinder body 10 and falls under the action of gravity after losing the centrifugal force, while the lime powder with smaller particles is discharged through the induced draft fan 30.

[0022] In some embodiments, a powder receiving groove 70 is provided on the inner wall of the classification cylinder body 10 between the classifier 20 and the feeding mechanism 40. In this way, the unqualified lime powder after classification will automatically fall into the powder receiving groove 70 under the action of gravity after losing the centrifugal force.

[0023] The air distribution device 50 includes an air distribution pipe 51 fixed to the classification cylinder body 10, an air distribution disk 52 fixed to the air distribution pipe 51, and through holes 53 provided through the air distribution disk 52. The air distribution pipe 51 is externally connected to a blower. The blower blows air into the air distribution disk 52 to generate an upward wind force, so that the limestone powder is lifted upward under the action of the wind force.

[0024] A feed pipe 11 is provided on the side of the classification cylinder body 10. The feed pipe 11 is connected with a feed hopper 12.

[0025] In some embodiments, a star-shaped feed valve 13 is installed at the lower end of the feed hopper 12. Through the setting of the star-shaped feed valve 13, it is convenient to control the speed of adding lime powder into the feeding bin 41.

[0026] Specifically, the dispersing mechanism 60 includes an annular slide rail 61 fixed to the inner wall of the cloth bin 41, a rotating frame 62 rotatably limited within the slide rail 61, a turning shovel plate 63 fixed to the rotating frame 62, and a driving assembly 64 disposed within the cloth bin 41 for driving the rotation of the rotating frame 62.

[0027] The driving assembly 64 includes a motor 641 fixed within the cloth bin 41, a gear 642 fixed to the output shaft 641 of the motor, and a gear ring 643 fixed to the rotating frame 62. The gear 642 is meshed and connected to the gear ring 643. During cloth feeding, the external power supply of the motor 641 is connected. The rotation of the output shaft of the motor 641 drives the rotation of the gear 642. The rotation of the gear 642 drives the rotation of the gear ring 643. When the gear ring 643 rotates, it drives the rotation of the rotating frame 62. When the rotating frame 62 rotates, it drives the turning shovel plate 63 to move within the cloth bin 41 to disperse the limestone powder.

[0028] Embodiment 2

[0029] A limestone powder air classifier is substantially the same as that in Embodiment 1, except that: a cloth pipe 43 is connected to the cloth inlet 42. The other end of the cloth pipe 43 connected to the cloth inlet 42 is inclined downward and points to the center of the classifier cylinder 10. A blanking port 44 is provided through the bottom of the cloth pipe 43 along the length direction, and a vibrator 45 is installed on the cloth pipe 43. Through the arrangement of the cloth pipe 43, the limestone powder enters the cloth pipe 43 through the cloth inlet 42, and then uniformly scatters through the blanking port 44 in the length direction of the cloth pipe 43. In this way, the limestone powder can be better dispersed, so as to better contact the upward air generated by the air distribution device 50, and well solve the problem of concentrated blanking of the limestone powder.

[0030] For the limestone powder air classifier of the present utility model, a cloth mechanism is adopted to effectively disperse the material, and the sufficiently dispersed material is lifted upward by the air distribution device, so that the material can reach the best separation state under the action of gravity and centrifugal force.

[0031] Finally, it should be noted that: the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A limestone powder air classifier, characterized in that, It includes a classifier cylinder body (10), a classifier (20) and an induced draft fan (30) are provided at the upper end of the classifier cylinder body (10), a feeding mechanism (40) is provided inside the classifier cylinder body (10) and below the classifier (20), the feeding mechanism (40) includes a feeding bin (41) fixedly arranged on the inner wall of the classifier cylinder body (10) for storing limestone powder, the feeding bin (41) is provided with a feeding port (42), the feeding ports (42) are equidistantly distributed around the axis of the classifier cylinder body (10), a dispersing mechanism (60) for dispersing limestone powder is provided in the feeding bin (41), and an air distribution device (50) is provided at the lower end of the classifier cylinder body (10).

2. The air classifier for limestone powder according to claim 1, characterized in that, The air distribution device (50) includes an air distribution pipe (51) fixed to the classifier cylinder body (10), an air distribution disc (52) fixed to the air distribution pipe (51), and through holes (53) penetrating through the air distribution disc (52).

3. The air classifier for limestone powder according to claim 1, characterized in that, A feed pipe (11) is provided on the side surface of the classifier cylinder body (10), and the feed pipe (11) is connected with a feed hopper (12).

4. The air classifier for limestone powder according to claim 3, wherein A star-shaped blanking valve (13) is installed at the lower end of the feed hopper (12).

5. The air classifier for limestone powder according to claim 1, wherein, The dispersing mechanism (60) includes an annular slide rail (61) fixed to the inner wall of the feeding bin (41), a rotating frame (62) rotationally limited in the slide rail (61), a turning shovel plate (63) fixed to the rotating frame (62), and a driving assembly (64) provided in the feeding bin (41) for driving the rotating frame (62) to rotate.

6. The air classifier for limestone powder according to claim 1, characterized in that, A powder receiving groove (70) is provided on the inner wall of the classifier cylinder body (10) between the classifier (20) and the feeding mechanism (40).

7. A limestone powder air classifier according to claim 1, characterized in that, The feeding port (42) is connected with a feeding pipe (43), the other end of the feeding pipe (43) connected with the feeding port (42) is inclined downward and points to the center of the classifier cylinder body (10), a blanking port (44) is provided through the bottom of the feeding pipe (43) along the length direction, and a vibrator (45) is installed on the feeding pipe (43).

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