A fluidized bed jet mill feed device

Abstract

The utility model relates to the technical field of airflow pulverizer, especially to a feed device of fluidized bed airflow pulverizer, which comprises a front end feeding assembly, an input assembly and a feed assembly for the fluidized bed airflow pulverizer; the feed assembly comprises a chassis, a circular groove is fixedly installed on the upper side outer ring of the chassis, a rotating column is rotatably installed at the center position of the chassis, a plurality of groups of arc-shaped fan blades are circumferentially and equidistantly installed on the outer wall of the rotating column, a through pipe is fixedly and communicatively installed on the side wall of the circular groove, a fourth flange plate is fixedly connected to the outer side end of the through pipe, a top plate is arranged on the upper side of the circular groove, and a connecting pipe is fixedly and communicatively installed on the upper side of the top plate. The feed assembly is provided, high-speed airflow is utilized to convey the material, the ball body is utilized to drive the fan blades to crush the material during the conveying process, the particle size of the material is reduced, the material is prevented from blocking the pipeline, the subsequent pulverizing work of the fluidized bed airflow pulverizer is accelerated, and the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of airflow pulverizer technology, and in particular to a feeding device for a fluidized bed airflow pulverizer. Background Technology

[0002] Fluidized bed jet mills use compressed air that has been refrigerated, filtered, and dried before being injected into the grinding chamber at supersonic speed through nozzles. This fluidizes the material, and the accelerated material converges at the point where the jets from several nozzles meet, resulting in intense collisions, friction, and shearing to achieve ultrafine particle pulverization.

[0003] Reference to the utility model patent with authorization announcement number CN213377092U discloses a feeding device for a fluidized bed air jet mill, including an L-shaped feeding pipe installed on the grinding chamber of the fluidized bed air jet mill. The horizontal section of the feeding pipe is connected to the grinding chamber, and its vertical section faces upward. An air inlet is provided on the outwardly convex side of the bent part of the feeding pipe. A discharge assembly is installed on the air inlet. The discharge assembly includes a discharge pipe and a fan. The two ends of the discharge pipe are respectively connected to the air inlet and the fan. The fan blows airflow into the feeding pipe through the discharge pipe and the air inlet.

[0004] The aforementioned patent features a horizontal discharge pipe on the side of the feed pipe, arranged in an alternating pattern with the corners of the feed pipe. This arrangement makes it easier for materials to clog at the corners of the feed pipe. Additionally, the fan's operation can interfere with the high-speed airflow in the feed pipe, resulting in poor practicality. To address the technical deficiencies in the aforementioned patent, we propose a feeding device for a fluidized bed air jet mill. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a feeding device for a fluidized bed air jet mill.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A feeding device for a fluidized bed air jet mill includes a front-end feeding assembly, an input assembly, and a feeding component for the fluidized bed air jet mill. The feeding component includes a chassis, a circular groove fixedly installed on the outer ring of the upper side of the chassis, a rotating column rotatably installed at the center of the chassis, a plurality of arc-shaped fan blades equidistantly installed on the outer wall of the rotating column, a through pipe fixedly connected to the side wall of the circular groove, a fourth flange fixedly connected to the outer end of the through pipe, a top plate provided on the upper side of the circular groove, and a connecting pipe fixedly installed on the upper side of the top plate.

[0008] Furthermore, the top plate is screwed onto the upper side of the circular groove, and a fifth flange is fixedly installed on the upper end of the connecting pipe.

[0009] By adopting the above technical solution, the fifth flange makes it easier to directly screw the device into the inlet port of the fluidized bed jet mill, making installation more convenient.

[0010] Furthermore, several vertical helical teeth are evenly distributed and fixedly installed inside the circular groove.

[0011] Furthermore, several vertical racks are evenly distributed and fixedly connected to the inner arc surface of the arc-shaped fan blade, and several horizontal racks are evenly distributed and fixedly connected to the outer arc surface of the arc-shaped fan blade.

[0012] By adopting the above technical solution, the setting of vertical rack and horizontal toothed plate improves the surface roughness of the arc-shaped fan blade, thereby enabling the arc-shaped fan blade to break up the material when it rotates and collides with the material.

[0013] Furthermore, the axis of the through-pipe does not intersect with the rotating column.

[0014] Furthermore, the front-end feeding assembly includes a feeding cylinder, a discharge pipe is fixedly installed at the bottom of the feeding cylinder, and a first flange is fixedly installed at the lower end of the discharge pipe.

[0015] By adopting the above technical solution, the setting of the first flange facilitates the screw connection between the front-end feeding component and the input component.

[0016] Furthermore, an electromagnetic control valve is fixedly installed on the feed pipe.

[0017] Furthermore, a shaft seat is fixedly installed on the upper side wall of the feed cylinder, a sealing cover plate is rotatably installed on the shaft seat, a handle is fixedly installed on the sealing cover plate, and a lock is provided on the sealing cover plate.

[0018] By adopting the above technical solution, during operation, the sealing cover plate needs to be closed and the latch locked to ensure that the sealing cover plate is stably attached to the upper side of the feed cylinder, thus preventing high-speed airflow from leaking out from the gap on the upper side of the feed cylinder.

[0019] Furthermore, the input component includes a high-speed airflow duct, an upper support pipe is fixedly installed on the upper side wall of the high-speed airflow duct, and a second flange is fixedly installed at the upper end of the upper support pipe, the second flange being screwed to the first flange.

[0020] Furthermore, a third flange is fixedly installed on the left end of the high-speed airflow duct, and the third flange is screwed to the fourth flange.

[0021] By adopting the above technical solution, the entire device is divided into three main parts, each of which can be screwed together and disassembled, which facilitates subsequent maintenance and assembly work.

[0022] Compared with related technologies, the feeding device for a fluidized bed air jet mill proposed in this utility model has the following beneficial effects:

[0023] In this invention, the feeding device of a fluidized bed air jet mill utilizes a feeding assembly. When material is added, the high-speed airflow creates a negative pressure inside the high-speed airflow pipe, drawing material from the feed cylinder into the pipe and subsequently into a circular trough. Under the influence of the high-speed airflow, the material is blown towards the arc-shaped blades, which in turn drive several arc-shaped blades to rotate a rotating column at high speed inside the trough. This causes the material entering the trough to collide and be thrown against the inner wall of the trough, resulting in intense collisions between materials, between materials and blades, and between materials and the inner wall of the trough. This initial crushing of the material is achieved, preventing large-diameter materials from clogging the pipe. The crushed material is then fed into the fluidized bed air jet mill port through a connecting pipe under the influence of airflow. This invention utilizes high-speed airflow to transport materials, and during the transport process, the rotating force of the sphere drives the blades to crush the material, reducing the particle size and preventing pipe blockage. This also accelerates the subsequent crushing process of the fluidized bed air jet mill, enhancing its practicality. Attached Figure Description

[0024] Figure 1 A three-dimensional structural diagram of the feeding device for a fluidized bed air jet mill proposed in this utility model. Figure 1 ;

[0025] Figure 2 A three-dimensional structural diagram of the feeding device for a fluidized bed air jet mill proposed in this utility model. Figure 2 ;

[0026] Figure 3 This is a three-dimensional structural diagram of the front-end feeding component;

[0027] Figure 4 A three-dimensional structural diagram of the input component;

[0028] Figure 5 This is a three-dimensional structural diagram of the feeding assembly;

[0029] Figure 6 This is a schematic diagram of the internal three-dimensional structure of the feeding assembly;

[0030] Figure 7 This is an enlarged schematic diagram of the three-dimensional structure of the arc-shaped fan blade.

[0031] In the diagram: 1. Front-end feeding assembly; 11. Feed cylinder; 12. Shaft seat; 13. Sealing cover plate; 14. Handle; 15. Discharge pipe; 16. First flange; 17. Solenoid control valve; 2. Input assembly; 21. High-speed airflow pipe; 22. Upper support pipe; 23. Second flange; 24. Third flange; 3. Feeding assembly; 31. Base plate; 32. Circular groove; 33. Through pipe; 34. Fourth flange; 35. Top plate; 36. Connecting pipe; 37. Fifth flange; 38. Rotary column; 39. Arc-shaped fan blade; 310. Vertical rack; 311. Horizontal toothed plate; 312. Vertical helical tooth. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0033] Reference Figures 1-7 A feeding device for a fluidized bed air jet mill includes a front-end feeding component 1, an input component 2, and a feeding component 3 for the fluidized bed air jet mill. The feeding component 3 includes a chassis 31, a circular groove 32 fixedly installed on the outer ring of the upper side of the chassis 31, a rotating column 38 rotatably installed at the center of the chassis 31, a number of arc-shaped fan blades 39 equidistantly installed on the outer wall of the rotating column 38, a through pipe 33 fixedly connected to the side wall of the circular groove 32, a fourth flange 34 fixedly connected to the outer end of the through pipe 33, a top plate 35 provided on the upper side of the circular groove 32, and a connecting pipe 36 fixedly installed on the upper side of the top plate 35.

[0034] In this embodiment, the top plate 35 is screwed onto the upper side of the circular groove 32, and the fifth flange 37 is fixedly installed on the upper end of the connecting pipe 36.

[0035] With the above structure, the fifth flange 37 facilitates the connection of the connecting pipe 36 to the input port of the fluidized bed air jet mill, making the installation and connection of this device more convenient.

[0036] In this embodiment, the centerline of the through pipe 33 does not intersect with the rotating column 38.

[0037] With the above structure, the axis of the through pipe 33 does not intersect with the rotating column 38, so that the blowing direction of the high-speed airflow pipe 21 on the inner side of the circular groove 32 directly acts on the side wall of the arc-shaped fan blade 39 on the side of the rotating column 38, thereby driving the arc-shaped fan blade 39 to drive the rotating column 38 to rotate at high speed inside the circular groove 32.

[0038] In this embodiment, several vertical helical teeth 312 are evenly distributed and fixedly installed inside the circular groove 32, several vertical racks 310 are evenly distributed and fixedly connected on the inner arc surface of the arc-shaped fan blade 39, and several horizontal toothed plates 311 are evenly distributed and fixedly connected on the outer arc surface of the arc-shaped fan blade 39.

[0039] Through the above structure, the vertical rack 310 and the horizontal toothed plate 311 improve the surface roughness of the arc-shaped fan blade 39, thereby enabling the arc-shaped fan blade 39 to break up materials when it rotates and collides with them. In addition, the horizontal toothed plate 311 also provides back support for the arc-shaped fan blade 39, improving its structural strength.

[0040] In this embodiment, the front-end feeding assembly 1 includes a feeding cylinder 11, a feeding pipe 15 is fixedly installed at the bottom of the feeding cylinder 11, a first flange 16 is fixedly installed at the lower end of the feeding pipe 15, an electromagnetic control valve 17 is fixedly installed on the feeding pipe 15, a shaft seat 12 is fixedly installed on the upper side wall of the feeding cylinder 11, a sealing cover 13 is rotatably installed on the shaft seat 12, a handle 14 is fixedly installed on the sealing cover 13, and a latch is provided on the sealing cover 13.

[0041] With the above structure, the electromagnetic control valve 17 is used to control the feeding speed of the feeding pipe 15 and can be adjusted according to actual usage requirements. In addition, this utility model is an auxiliary feeding device for a fluidized bed air jet mill. The automatic control of the electrical components on it is controlled by the programmable controller on the fluidized bed air jet mill. The fluidized bed air jet mill is a common existing pulverizing equipment, which will not be described in detail here.

[0042] In this embodiment, the input component 2 includes a high-speed airflow duct 21, an upper support pipe 22 is fixedly installed on the upper side wall of the high-speed airflow duct 21, a second flange 23 is fixedly installed on the upper end of the upper support pipe 22, the second flange 23 is screwed to the first flange 16, a third flange 24 is fixedly installed on the left side end of the high-speed airflow duct 21, and the third flange 24 is screwed to the fourth flange 34.

[0043] With the above structure, the high-speed airflow of the high-speed airflow duct 21 can be provided by a high-speed air pump. The high-speed air pump is a common device and will not be described in detail here.

[0044] In this utility model, during use:

[0045] I. Material Preparation and Initial Input

[0046] First, the operator opens the sealing cover 13 on the feed cylinder 11 and puts the material to be crushed into the feed cylinder 11. After the material is fed in, the sealing cover 13 is closed by the handle 14 and secured with a lock to ensure that the feed cylinder 11 is sealed and to prevent high-speed airflow from leaking out from the upper gap of the feed cylinder 11 during subsequent operations. At this time, the discharge pipe 15 at the bottom of the feed cylinder 11 is under the control of the electromagnetic control valve 17. The electromagnetic control valve 17 is automatically controlled by the programmable controller on the fluidized bed air jet mill, which can adjust the discharge speed according to actual usage requirements to ensure that the material enters the subsequent conveying stage at a suitable rate.

[0047] II. Material conveying process

[0048] After the material is ready in the feed cylinder 11, the high-speed airflow pipe 21 generates a high-speed airflow under the action of a high-speed air pump (common equipment). Due to the flow of the high-speed airflow, a negative pressure state is formed inside the high-speed airflow pipe 21. Under the action of this negative pressure, the material in the feed cylinder 11 is sucked into the high-speed airflow pipe 21. The material moves in the pipe with the high-speed airflow and continues to move forward through the upper support pipe 22. The second flange 23 at the upper end of the upper support pipe 22 is tightly connected to the first flange 16 at the lower end of the discharge pipe 15 by bolting, ensuring the continuity and sealing of the material conveying path.

[0049] III. Material Crushing and Processing

[0050] When the material enters the feeding assembly 3 with the high-speed airflow, the high-speed airflow enters the circular groove 32 through the through pipe 33. Since the axis of the through pipe 33 does not intersect with the rotating column 38, the high-speed airflow blows directly onto the side wall of the arc-shaped fan blade 39 on the side of the rotating column 38, thereby driving the arc-shaped fan blade 39 to drive the rotating column 38 to rotate at high speed inside the circular groove 32. In this process, the vertically distributed vertically oriented teeth 312 inside the circular groove 32, as well as the vertically oriented rack 310 on the inner arc surface of the arc-shaped fan blade 39 and the horizontally oriented toothed plate 311 on the outer arc surface, play an important role. The vertically oriented rack 310 and the horizontally oriented toothed plate 311 increase the surface roughness of the arc-shaped fan blade 39, enabling the arc-shaped fan blade 39 to crush the material when it collides with the material during rotation. Under the impetus of the high-speed airflow, the material collides violently with the arc-shaped fan blade 39, the inner wall of the circular groove 32, and with each other, initially completing the crushing process and effectively avoiding the problem of large-diameter materials clogging the pipe.

[0051] IV. Material enters the crusher

[0052] After initial crushing, the material is discharged from the connecting pipe 36 on the upper side of the circular trough 32 under the continuous action of high-speed airflow. The fifth flange 37 at the upper end of the connecting pipe 36 is connected to the input port of the fluidized bed air jet mill by screw connection, so that the material can smoothly enter the fluidized bed air jet mill for subsequent ultrafine grinding.

[0053] Through ingenious structural design and coordinated operation of its components, the entire feeding device utilizes high-speed airflow to transport materials and performs preliminary crushing of the materials during the transport process. This effectively improves feeding efficiency, avoids pipe blockage, and provides a strong guarantee for the efficient operation of the fluidized bed air jet mill.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A feeding device for a fluidized bed air jet mill, characterized in that, It includes a front-end feeding assembly (1), an input assembly (2), and a feeding assembly (3) for a fluidized bed air jet mill; The feeding assembly (3) includes a chassis (31), a circular groove (32) is fixedly installed on the outer ring of the upper side of the chassis (31), a rotating column (38) is rotatably installed at the center of the chassis (31), a number of arc-shaped fan blades (39) are equidistantly installed on the outer wall of the rotating column (38), a through pipe (33) is fixedly connected to the side wall of the circular groove (32), a fourth flange (34) is fixedly connected to the outer end of the through pipe (33), a top plate (35) is provided on the upper side of the circular groove (32), and a connecting pipe (36) is fixedly installed on the upper side of the top plate (35).

2. The feeding device for a fluidized bed air jet mill according to claim 1, characterized in that, The top plate (35) is screwed onto the upper side of the circular groove (32), and the fifth flange (37) is fixedly installed on the upper end of the connecting pipe (36).

3. The feeding device for a fluidized bed air jet mill according to claim 1, characterized in that, Several vertical helical teeth (312) are evenly distributed and fixedly installed inside the circular groove (32).

4. The feeding device for a fluidized bed air jet mill according to claim 1, characterized in that, Several vertical racks (310) are evenly distributed and fixedly connected on the inner arc surface of the arc-shaped fan blade (39), and several horizontal racks (311) are evenly distributed and fixedly connected on the outer arc surface of the arc-shaped fan blade (39).

5. The feeding device for a fluidized bed air jet mill according to claim 1, characterized in that, The axis of the through pipe (33) does not intersect with the rotating column (38).

6. The feeding device for a fluidized bed air jet mill according to claim 1, characterized in that, The front-end feeding assembly (1) includes a feeding cylinder (11), a feeding pipe (15) is fixedly installed at the bottom of the feeding cylinder (11), and a first flange (16) is fixedly installed at the lower end of the feeding pipe (15).

7. The feeding device for a fluidized bed air jet mill according to claim 6, characterized in that, An electromagnetic control valve (17) is fixedly installed on the feed pipe (15).

8. The feeding device for a fluidized bed air jet mill according to claim 6, characterized in that, A bearing seat (12) is fixedly installed on the upper side wall of the feed cylinder (11), a sealing cover plate (13) is rotatably installed on the bearing seat (12), and a handle (14) is fixedly installed on the sealing cover plate (13).

9. The feeding device for a fluidized bed air jet mill according to claim 1, characterized in that, The input component (2) includes a high-speed airflow duct (21), an upper support pipe (22) is fixedly installed on the upper side wall of the high-speed airflow duct (21), and a second flange (23) is fixedly installed at the upper end of the upper support pipe (22), and the second flange (23) is screwed to the first flange (16).

10. The feeding device for a fluidized bed air jet mill according to claim 9, characterized in that, The high-speed airflow duct (21) is fixedly installed with a third flange (24) on the left side, and the third flange (24) is screwed to the fourth flange (34).

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