A continuous gypsum powder air flow classification device

Abstract

This utility model discloses a continuous gypsum powder airflow classification and separation device, including a shell, a classification chamber, an air inlet, a discharge port A, a feed hopper, a side outlet shaft tube, a drive device, a double-layer classification wheel structure, a classification shell, a discharge port B, and a fine material discharge pipe. The classification chamber is installed in the middle of the shell, the air inlet is installed on the side end of the classification chamber, the discharge port A is located at the bottom end of the shell, the feed hopper is installed at the top end of the shell, the side outlet shaft tube is installed in the feed hopper through the inside of the shell, the drive device drives the side outlet shaft tube to rotate through the shell, the bottom end of the side outlet shaft tube is installed in the classification chamber of the double-layer classification wheel structure, the classification shell is installed at the bottom of the double-layer classification wheel structure, the discharge port B is connected to the bottom side end of the shell through the bottom end of the classification shell, and the fine material discharge pipe is connected to the lower part of the side end of the shell through the side end of the classification shell. This utility model solves the problem that coaxial multi-layer classification wheels require multiple drive sources for differential rotation, which increases equipment costs.

Description

Technical Field

[0001] This utility model relates to the field of gypsum production, and in particular to a continuous gypsum powder airflow classification and separation device. Background Technology

[0002] Air classifiers, as common continuous airflow separation equipment for gypsum powder, utilize a classifying wheel that generates a strong centrifugal force field through high-speed rotation. When an airflow containing powder particles enters the classification zone, heavier or larger particles, due to their greater inertia, cannot change direction with the airflow and are thus thrown against the walls of the classification chamber, eventually settling or being collected. Lighter or smaller particles, on the other hand, are better able to follow the airflow, pass through the classifying wheel, and are collected as a fine powder product.

[0003] Coaxial multi-layer classifying wheels are the key structure for achieving multi-stage classification of gypsum powder. Multiple classifying wheels rotate at different speeds under the action of different drive sources, separating gypsum powder of different particle sizes. Distributing multiple drive sources within the effective space of the air classifier increases the equipment cost. Utility Model Content

[0004] The purpose of this invention is to provide a continuous gypsum powder airflow classification and separation device to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a continuous gypsum powder airflow classification and separation device, comprising a shell, a classification chamber, an air inlet, a discharge port A, a feed hopper, a side outlet shaft tube, a drive device, a double-layer classification wheel structure, a classification shell, a discharge port B, and a fine material discharge pipe. The classification chamber is installed in the middle of the shell, the air inlet is installed on the side end of the classification chamber, the discharge port A is opened at the bottom end of the shell, the feed hopper is installed at the top end of the shell, the side outlet shaft tube is installed in the feed hopper through the inside of the shell, the drive device drives the side outlet shaft tube to rotate through the shell, the bottom end of the side outlet shaft tube is installed in the classification chamber of the double-layer classification wheel structure, the classification shell is installed at the bottom of the double-layer classification wheel structure, the discharge port B is connected to the bottom side end of the shell through the bottom end of the classification shell, and the fine material discharge pipe is connected to the lower part of the side end of the shell through the side end of the classification shell.

[0006] Based on the above technical solution, the double-layer classifying wheel structure includes an inner classifying wheel, a magnetic coupler, an outer classifying wheel, and a bracket. The inner classifying wheel is installed at the top of the fine material discharge pipe, the magnetic coupler is installed at the top of the inner classifying wheel, and the side outlet shaft tube is fixed to the top of the magnetic coupler fixing tube. The outer classifying wheel is axially rotatably connected to the outer end of the inner classifying wheel, and the bracket is fixed at the top of the outer classifying wheel and at the rotor side of the magnetic coupler.

[0007] Based on the above technical solution, the side outlet shaft tube drives the inner and outer grading wheels to rotate at different speeds through a magnetic coupler.

[0008] Compared with existing technologies, this invention has the following advantages: This invention installs a double-layer classifying wheel structure in an air classifier used for gypsum powder classification, with the inner and outer classifying wheels rotating at different speeds via a magnetic coupler. This enables multi-stage classification and reduces equipment costs. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the appearance and structure of this utility model.

[0010] Figure 2 This is a schematic diagram of the connection status of the side outlet shaft tube of this utility model.

[0011] Figure 3 This is a schematic diagram of the connection state of the double-layer graded wheel structure of this utility model.

[0012] Figure 4 This is a schematic diagram of the double-layer graded wheel structure of this utility model.

[0013] In the diagram: 1. Shell, 2. Grading chamber, 3. Air inlet, 4. Discharge port A, 5. Feed hopper, 6. Side outlet shaft tube, 7. Drive device, 8. Double-layer grading wheel structure, 9. Grading shell, 10. Discharge port B, 11. Fine material discharge pipe, 12. Inner grading wheel, 13. Magnetic coupler, 14. Outer grading wheel, 15. Support. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] like Figures 1 to 4 As shown, a continuous gypsum powder airflow classification and separation device includes a shell 1, a classification chamber 2, an air inlet 3, a discharge port A4, a feed hopper 5, a side outlet shaft tube 6, a drive device 7, a double-layer classification wheel structure 8, a classification shell 9, a discharge port B10, and a fine material discharge pipe 11. The classification chamber 2 is installed in the middle of the shell 1. The air inlet 3 is installed on the side end of the classification chamber 2. The discharge port A4 is located at the bottom end of the shell 1. The feed hopper 5 is installed at the top end of the shell 1. The side outlet shaft tube 6 is installed inside the shell 1 and connected to the feed hopper 5. The drive device 7 drives the side outlet shaft tube 6 to rotate through the shell 1. The bottom end of the side outlet shaft tube 6 is installed inside the classification chamber 2 through the double-layer classification wheel structure 8. The classification shell 9 is installed at the bottom of the double-layer classification wheel structure 8. The discharge port B10 is connected to the bottom side end of the shell 1 through the bottom end of the classification shell 9. The fine material discharge pipe 11 is connected to the lower part of the side end of the shell 1 through the side end of the classification shell 9.

[0016] The double-layer grading wheel structure 8 includes an inner grading wheel 12, a magnetic coupler 13, an outer grading wheel 14, and a bracket 15. The inner grading wheel 12 is installed at the top of the fine material discharge pipe 11. The magnetic coupler 13 is installed at the top of the inner grading wheel 12, and the side outlet shaft pipe 6 is fixed to the top of the magnetic coupler 13 fixing part. The outer grading wheel 14 is axially rotatably connected to the outer end of the inner grading wheel 12. The bracket 15 is fixed to the top of the outer grading wheel 14 and is also fixed to the rotor side of the magnetic coupler 13.

[0017] The side outlet shaft tube 6 drives the inner grading wheel 12 and the outer grading wheel 14 to rotate at different speeds via a magnetic coupler 13.

[0018] The working principle of this utility model is as follows: During use, gypsum powder enters the side outlet shaft tube 6 through the feed hopper 5. The gypsum powder is then ejected from the shell 1 into the classification chamber 2. The side outlet shaft tube 6, via the magnetic coupler 13, causes the stator to rotate the inner classification wheel 12 at full speed, while the rotor, via the magnetic coupler 13, rotates the outer classification wheel 14 at a differential speed. The high-speed rotation of the inner and outer classification wheels 12 and 14 creates a strong centrifugal force field around the wheels. Simultaneously, air is drawn in through the air inlet 3. Coarse or heavy particles experience greater centrifugal force and are thrown towards the periphery of the classification wheel, falling along the sidewall to the discharge port A4. Medium particles experience less centrifugal force and enter the outer classification wheel 14, where they are suspended and drawn into the classification shell 9 by the airflow generated by the induced draft fan, then discharged through the discharge port B10. Fine particles experience the least centrifugal force and enter the inner classification wheel 14, where they are suspended and drawn into the fine material discharge pipe 11 by the airflow generated by the induced draft fan.

[0019] The above description is a preferred embodiment of the present utility model. For those skilled in the art, any changes, modifications, substitutions and variations made to the implementation methods without departing from the principles and spirit of the present utility model, based on the teachings of the present utility model, still fall within the protection scope of the present utility model.

Claims

1. A continuous gypsum powder airflow classification and separation device, comprising a shell (1), a classification chamber (2), an air inlet (3), a discharge port A (4), a feed hopper (5), a side outlet shaft tube (6), a drive device (7), a double-layer classification wheel structure (8), a classification shell (9), a discharge port B (10), and a fine material discharge pipe (11), characterized in that: The grading chamber (2) is installed in the middle of the housing (1), the air inlet (3) is installed on the side of the grading chamber (2), the discharge port A (4) is opened at the bottom of the housing (1), the feed hopper (5) is installed at the top of the housing (1), the side outlet shaft tube (6) is installed in the feed hopper (5) through the inside of the housing (1), the driving device (7) drives the side outlet shaft tube (6) to rotate through the housing (1), the double-layer grading wheel structure (8) is installed at the bottom of the side outlet shaft tube (6) through the grading chamber (2), the grading shell (9) is installed at the bottom of the double-layer grading wheel structure (8), the discharge port B (10) is connected to the bottom side of the housing (1) through the bottom of the grading shell (9), and the fine material discharge pipe (11) is connected to the lower part of the side of the housing (1) through the side of the grading shell (9).

2. The continuous gypsum powder airflow classification and separation equipment according to claim 1, characterized in that: The double-layer grading wheel structure (8) includes an inner grading wheel (12), a magnetic coupler (13), an outer grading wheel (14), and a bracket (15). The inner grading wheel (12) is installed at the top of the fine material discharge pipe (11). The magnetic coupler (13) is installed at the top of the inner grading wheel (12), and the side outlet shaft pipe (6) is fixed to the top of the magnetic coupler (13). The outer grading wheel (14) is axially rotatably connected to the outer end of the inner grading wheel (12). The bracket (15) is fixed at the top of the outer grading wheel (14) and is fixed to the rotor side of the magnetic coupler (13).

3. The continuous gypsum powder airflow classification and separation equipment according to claim 2, characterized in that: The side outlet shaft tube (6) drives the inner grading wheel (12) and the outer grading wheel (14) to rotate at different speeds via a magnetic coupler (13).

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