Fine particle airflow classification equipment

Abstract

A feeding pipe is arranged in a shell in a penetrating mode, a material scattering disc is rotationally arranged on the periphery of the feeding pipe, a main channel and side holes distributed in the periphery of the main channel are formed in the feeding pipe, and a baffle obliquely facing the side holes is arranged at the lower end of the material scattering disc; and the upper end of the bulk tray is provided with a sector plate which is distributed towards the fine particle discharge port side. Air flow with material particles is jetted to the baffle through the side holes, the jetted air flow makes contact with the baffle, so that the flow speed of the air flow of the material particles is reduced, meanwhile, the fan plates on the material scattering disc are driven by the air flow to rotate, then rising slow-speed air flow is generated through rotation, and small-particle-size particles can rise along with the slow-speed air flow; and the large-particle-size particles cannot be graded along with rising of the slow-speed airflow, so that the grading quality of the material particles is guaranteed, the small-particle-size particles can be graded and collected outwards through the fine particle discharging opening, and rapid and efficient grading of the material particles is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of particle screening, in particular to a fine particle airflow classification device. Background Art

[0002] Since particles with larger particle sizes settle faster in the airflow, while particles with smaller particle sizes rise with the airflow, the current airflow classification equipment mainly uses this principle to achieve graded collection of material particles according to the different settling speeds of material particles with different particle sizes in the airflow, and then obtain the required graded particle products.

[0003] However, during the process of airflow classification of particles by the airflow classification equipment, if the set classification airflow velocity is too large, some large-size particles (i.e., coarse particles) will easily rise with the airflow and be classified into small-size particles (i.e., fine particles), thereby affecting the accuracy of material particle classification; and if the classification airflow velocity is too low, it will cause the material particles to be difficult to rise with the airflow, thereby affecting the particle classification efficiency, and when the material particles are classified, the small-size particles will sometimes stick together with the large-size particles, further affecting the classification efficiency of the small-size particles and resulting in a lower classification output of the airflow classification equipment. Summary of the invention

[0004] The object of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a fine particle airflow classification device.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A fine particle airflow classification device comprises a shell and a fine particle discharge port and a coarse particle discharge port respectively arranged at the upper and lower ends of the shell, a feed pipe is arranged through the shell, a bulk material disc is rotatably arranged on the outer periphery of the feed pipe, an annular groove is arranged between the bulk material disc and the shell, a main channel for conveying material particles and side holes distributed on the outer periphery of the main channel are opened in the feed pipe, a baffle plate inclined toward the side hole is arranged at the lower end of the bulk material disc, and a fan plate distributed toward the fine particle discharge port side is arranged at the upper end of the bulk material disc.

[0007] Preferably, the baffle is provided with a concave hole opposite to the side hole.

[0008] Preferably, the bulk material tray is in the shape of a concave disc with high sides and a low center, and a through groove running through from top to bottom is provided on the bulk material tray.

[0009] Preferably, the through slots are distributed in one-to-one correspondence with the baffles and are arranged between two adjacent baffles.

[0010] Preferably, a vibration plate located below the bulk material tray is swingably installed in the shell, a spring and a magnet are arranged at the lower end of the vibration plate, the other end of the spring is fixed to the inner wall of the shell, and an electromagnet is installed in the shell and spaced apart from the magnet.

[0011] Preferably, the vibration material plate is arranged toward the side hole, and side plates extending upward are arranged around the vibration material plate.

[0012] Preferably, a discharge hole is provided on the vibration plate, a cylinder is mounted on the vibration plate, and an output end of the cylinder is connected to a slide plate corresponding to the position of the discharge hole.

[0013] Preferably, a material drop hole is arranged at the center of the vibration plate, and the material drop hole is arranged correspondingly to the feed pipe above and below.

[0014] Preferably, a convex ring is fixed on the feed pipe, and the bulk material tray rotates and abuts against the convex ring.

[0015] The beneficial effects of the present invention are:

[0016] 1. A main channel for airflow to transport material particles is opened in the feed pipe, and an airflow with material particles is sprayed toward the baffle through the side hole. At this time, the sprayed airflow contacts the baffle to reduce the airflow velocity of the material particles, and at the same time, the baffle and the bulk material plate are driven to rotate by the airflow, so as to drive the fan plate on the bulk material plate to rotate, and then the rotation generates an ascending slow airflow, so that small-sized particles can rise with the slow airflow, and large-sized particles will not be classified with the rise of the slow airflow, so as to ensure the classification quality of the material particles, and small-sized particles can be classified and collected outward through the fine particle discharge port, so as to achieve fast and efficient classification of material particles;

[0017] 2. A concave hole is opened on the baffle, and the material particles are ejected with the air flow and hit the baffle and the concave hole. Then, the baffle and the concave hole cooperate to hit and break up the sticky large-size particles and small-size particles, so as to increase the classification yield of small-size particles;

[0018] 3. Multiple vibration plates are arranged under the bulk material tray to collect the settled material particles and throw the collected material particles to the side holes through the vibration plates. The airflow ejected through the side holes drives the material particles to float up again, that is, the material particles are graded and collected again, which improves the grading efficiency of the material particles and increases the grading yield of the particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0021] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0022] Figure 4 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0023] Figure 5 The structure of the bulk material tray of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 6 The structure of the bulk material tray of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 7 A partial cross-sectional view of the present invention Figure 1 ;

[0026] Figure 8 for Figure 7 The enlarged schematic diagram of the center C;

[0027] Fig. 9 A partial cross-sectional view of the present invention Figure 2 .

[0028] In the figure: shell 1, fine particle discharge port 11, coarse particle discharge port 12, feed pipe 13, side hole 141 of main channel 14, convex ring 15, connecting plate 16, electromagnet 17, bulk material tray 2, baffle 21, concave hole 211, through groove 22, annular groove 23, fan plate 24, vibrating plate 3, side plate 31, discharge hole 32, slide plate 33, cylinder 34, spring 35, magnet 36, drop hole 37. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0030] In the description of this specification, the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0031] like Figures 1 to 9 As shown, a fine particle airflow classification device includes a shell 1 and a fine particle discharge port 11 and a coarse particle discharge port 12 respectively arranged at the upper and lower ends of the shell 1, wherein the fine particle discharge port 11 and the coarse particle discharge port 12 have a certain negative pressure suction force so that the fine particle discharge port 11 and the coarse particle discharge port 12 can respectively collect small-sized particles rising in the airflow and large-sized particles settling.

[0032] A feed pipe 13 is provided through the shell 1, and the feed pipe 13 is vertically fixed on the shell 1 from top to bottom. A main channel 14 for conveying material particles and side holes 141 distributed on the periphery of the main channel 14 are provided in the feed pipe 13, so that an airflow carrying material particles is conveyed into the shell 1 through the main channel 14 and the side holes 141, and the material particles conveyed in the main channel 14 are material particles that need to be classified.

[0033] The outer periphery of the feed pipe 13 is rotatably provided with a bulk material disc 2. Specifically, a convex ring 15 is fixed on the feed pipe 13, and the bulk material disc 2 is rotatably abutted against the convex ring 15. An annular groove 23 is provided between the bulk material disc 2 and the shell 1. The material particle airflow ejected from the side hole 141 can flow upward through the annular groove 23, and the particles with small particle size can be classified and collected outward through the fine particle discharge port 11.

[0034] Furthermore, a baffle 21 is provided at the lower end of the bulk material tray 2 and is inclined toward the side hole 141. The baffles 21 are multiple and fixedly arranged on the bulk material tray 2. The side holes 141 are circumferentially distributed on the feed pipe 13 and are connected to the main channel 14. The side holes 141 are inclined upward and arranged toward the baffle 21. When the side holes 141 spray an airflow carrying material particles toward the baffle 21, the sprayed airflow contacts the baffle 21 to reduce the airflow velocity of the material particles.

[0035] The upper end of the bulk material tray 2 is provided with a fan plate 24 distributed toward the fine particle discharge port 11. The number of the fan plates 24 is multiple and they are distributed obliquely upward. The airflow ejected from the side hole 141 acts on the baffle 21 and drives the bulk material tray 2 and the fan plate 24 to rotate, and then the fan plate 24 rotates to generate an ascending slow airflow, so that small-sized particles in the material particles can rise with the slow airflow, so that the small-sized particles can be classified and collected outward through the fine particle discharge port 11, that is, to achieve rapid and efficient classification of the material particles.

[0036] At the same time, large-sized particles will not be classified as they rise with the slow airflow, thereby ensuring the classification quality of the material particles and preventing large-sized particles from being mixed and classified into small-sized particles, thereby making the particle classification accuracy of this embodiment better and the quality of the classified products better.

[0037] The bulk material tray 2 is in the shape of a concave disc with high sides and a low center, that is, the bulk material tray 2 can be used to collect material particles settled in the airflow, and then when the fan plate 24 rotates, the airflow generated by the rotation of the fan plate 24 can make the material flow particles float again, that is, the material flow particles are graded and collected again, and then when the airflow velocity is slow, the material particles are graded and collected multiple times to improve the grading effect of the material particles.

[0038] A through slot 22 is provided on the bulk material tray 2, which is connected vertically. The through slot 22 corresponds to the baffles 21 one by one and is provided between two adjacent baffles 21, and the through slot 22 is located between two adjacent fan plates 24. When the airflow ejected from the side hole 141 abuts against the baffle 21, part of the airflow will flow directly to the upper end of the bulk material tray 2 through the through slot 22, that is, the airflow blown out from the through slot 22 can also drive the material particles settled on the bulk material tray 2 to float again, so as to more effectively assist the small-size particles to rise, making the graded collection of material particles more efficient.

[0039] Furthermore, a vibration plate 3 is swingably installed in the shell 1 and is located below the bulk material tray 2. The number of the vibration plates 3 is multiple and they are arranged in close contact with each other. The vibration plate 3 is arranged toward the side hole 141, and the vibration plate 3 is surrounded by side plates 31 extending upward. The vibration plate 3 is used to collect settled material particles.

[0040] A spring 35 and a magnet 36 are provided at the lower end of the vibration plate 3, and the other end of the spring 35 is fixed to the inner wall of the shell 1. The vibration plate 3 is supported by the spring 35. An electromagnet 17 is installed in the shell 1 and is spaced apart from the magnet 36. The magnet 36 can be a magnet or an iron block. The magnet 36 is fixed to the lower end surface of the vibration plate 3. A connecting plate 16 is fixed on the inner side of the shell 1. The connecting plate 16 extends to the bottom of the bulk material tray 2, and the electromagnet 17 is fixedly installed on the connecting plate 16.

[0041] The electromagnetic magnet 36 is connected through the electromagnet 17 to realize the rotation and swing of the vibration plate 3. The vibration plate 3 throws the collected material particles to the side hole 141, and the airflow ejected through the side hole 141 drives the material particles to float up again, so as to classify and collect the material particles again. That is, while the material particles ejected from the side hole 141 are classified and collected, the settled material particles are synchronously and repeatedly classified, thereby improving the classification efficiency of the material particles and increasing the classification yield of the particles.

[0042] The vibration plate 3 is provided with a discharge hole 32, and a cylinder 34 is installed on the vibration plate 3. The output end of the cylinder 34 is connected to a slide plate 33 corresponding to the position of the discharge hole 32. The slide plate 33 is driven by the cylinder 34 to slide to open the discharge hole 32, so that the material particles settled on the vibration plate 3 can be transported to the coarse particle discharge port 12 through the discharge hole 32.

[0043] A drop hole 37 is provided at the center of the vibration plate 3 , and the drop hole 37 is arranged correspondingly to the feed pipe 13 up and down. The large-diameter particles settle to the coarse-particle discharge port 12 through the drop hole 37 for discharge.

[0044] In order to prevent small-sized particles from sticking to large-sized particles and affecting the grading effect of the material particles, a recessed hole 211 opposite to the side hole 141 is opened on the baffle 21, and the recessed hole 211 is configured to block the material particles ejected in the airflow, that is, the material particles are ejected with the airflow and collide with the baffle 21 and the recessed hole 211, and then the baffle 21 cooperates with the recessed hole 211 to collide and break up the sticky large-sized particles and small-sized particles, so as to prevent small-sized particles from sticking to large-sized particles, which makes it impossible for small-sized particles to be graded and collected, and then the material particles are broken up to improve the grading effect and grading yield of the present embodiment for small-sized particles.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fine particle airflow classification device, comprising a housing (1) and a fine particle discharge port (11) and a coarse particle discharge port (12) respectively arranged at the upper and lower ends of the housing (1), characterized in that: A feed pipe (13) is provided through the shell (1), a bulk material tray (2) is rotatably provided on the outer periphery of the feed pipe (13), an annular groove (23) is provided between the bulk material tray (2) and the shell (1), a main channel (14) for conveying material particles and side holes (141) distributed on the outer periphery of the main channel (14) are provided in the feed pipe (13), a baffle (21) inclined toward the side hole (141) is provided at the lower end of the bulk material tray (2), and a fan plate (24) distributed toward the fine particle discharge port (11) is provided at the upper end of the bulk material tray (2).

2. A fine particle airflow classification device as claimed in claim 1, characterized in that: The baffle plate (21) is provided with a concave hole (211) opposite to the side hole (141).

3. A fine particle airflow classification device as claimed in claim 1, characterized in that: The bulk material tray (2) is in the shape of a concave disc with high sides and a low center. A through groove (22) penetrating from top to bottom is provided on the bulk material tray (2).

4. A fine particle airflow classification device as claimed in claim 3, characterized in that: The through slots (22) are distributed in one-to-one correspondence with the baffles (21) and are arranged between two adjacent baffles (21).

5. A fine particle airflow classification device according to any one of claims 1 to 4, characterized in that: A vibrating plate (3) located below the bulk material tray (2) is swingably mounted in the shell (1), a spring (35) and a magnet (36) are provided at the lower end of the vibrating plate (3), the other end of the spring (35) is fixed to the inner wall of the shell (1), and an electromagnet (17) spaced apart from the magnet (36) is installed in the shell (1).

6. A fine particle airflow classification device as claimed in claim 5, characterized in that: The vibration material plate (3) is arranged toward the side hole (141), and side plates (31) extending upwards are arranged around the vibration material plate (3).

7. A fine particle airflow classification device as claimed in claim 5, characterized in that: The vibrating plate (3) is provided with a discharge hole (32), and a cylinder (34) is installed on the vibrating plate (3), wherein the output end of the cylinder (34) is connected to a slide plate (33) corresponding to the position of the discharge hole (32).

8. A fine particle airflow classification device as claimed in claim 5, characterized in that: A material drop hole (37) is provided at the center of the vibration plate (3), and the material drop hole (37) is arranged correspondingly to the feed pipe (13) up and down.

9. A fine particle airflow classification device as claimed in claim 1, characterized in that: A convex ring (15) is fixed on the feed pipe (13), and the bulk material tray (2) is rotatably abutted against the convex ring (15).

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