An air lock discharge device for a centrifugal spray drier

Abstract

This utility model relates to an airlock unloading device for a centrifugal spray dryer, belonging to the technical field of drying equipment. This utility model uses a rotating shaft, a pusher plate, and an airlock cover in conjunction. As the material is pushed out of the discharge port, the airlock cover blocks the airflow, effectively preventing airflow from escaping from the discharge port and further reducing the outflow of hot air from the drying tower. This ensures stable temperature inside the drying tower and improves drying efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of drying equipment technology, specifically relating to an airlock unloading device for a centrifugal spray dryer. Background Technology

[0002] A centrifugal spray dryer is a device that disperses liquid materials into mist droplets through a sprayer, which are then rapidly evaporated and dried in hot air. When collecting the dried material, direct discharge due to the airflow inside the drying tower causes the material to be blown around by the airflow, affecting not only the collection rate but also causing environmental pollution. Furthermore, the airflow easily escapes from the discharge port, leading to a decrease in temperature inside the drying tower and impacting drying efficiency. Utility Model Content

[0003] To overcome the problems in the prior art where, during the collection of dried materials, direct unloading due to airflow inside the drying tower causes the material to fly around under the blowing airflow, affecting not only the material collection rate but also causing environmental pollution, and where airflow easily escapes from the discharge port, leading to a decrease in the temperature inside the drying tower and affecting drying efficiency, this utility model provides an airlock unloading device for a centrifugal spray dryer. Through the coordinated use of a rotating shaft, a pusher plate, and an airlock hood, the material is pushed out of the discharge port while the airlock hood blocks the airflow, effectively preventing airflow from escaping from the discharge port, further reducing the outflow of hot air from the drying tower, thereby ensuring stable temperature inside the drying tower and improving drying efficiency.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A centrifugal spray dryer's airlock unloading device mainly includes an unloading cylinder, an airlock cover, a cover plate, a bushing, a pusher plate, a rotating shaft, and a motor. The unloading cylinder is designed as a hollow cylindrical structure, with flanges at both the bottom and top. The cover plate is installed on the flange at the bottom of the unloading cylinder, and a fan-shaped unloading port is opened on the cover plate. The rotating shaft is installed on the cover plate through bearings, and the motor is installed at the bottom of the cover plate and is connected to the rotating shaft for transmission. A bushing is fitted on the rotating shaft, and pusher plates are evenly arranged along the circumferential direction on the bushing. The side ends of the pusher plates are tangent to the inner wall of the unloading cylinder, and a fan-shaped storage area is formed between adjacent pusher plates. The airlock cover is installed inside the unloading cylinder, located directly above the unloading port.

[0005] The airlock cover includes a semi-cylindrical outer shell and a semi-conical inner shell connected thereto. The top of the semi-cylindrical outer shell is provided with threaded holes at equal intervals along the circumferential direction. An annular connecting plate is provided on the inner wall of the unloading cylinder. The semi-cylindrical outer shell is mounted on the annular connecting plate by screws.

[0006] The semi-cylindrical outer shell and the semi-conical inner shell are provided with an arc-shaped groove at their center that mates with the bushing, and the arc-shaped groove is coaxial with the bushing.

[0007] The pusher plate is provided with at least 6 pieces.

[0008] A 1-3mm gap is provided between the bottom surface of the semi-cylindrical outer shell and the top of the pusher plate.

[0009] A rubber gasket is provided between the cover plate and the flange at the bottom of the unloading cylinder.

[0010] The beneficial effects of this utility model are:

[0011] This invention uses a rotating shaft, a pusher plate, and an airlock hood in combination. As the material is pushed out of the discharge port, the airlock hood blocks the airflow, which can effectively prevent the airflow from escaping from the discharge port, reduce the outflow of hot air from the drying tower, and thus ensure the temperature stability inside the drying tower and improve the drying efficiency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0013] Figure 2 This is another three-dimensional schematic diagram of this utility model.

[0014] Figure 3 This is a three-dimensional cross-sectional view of the present invention.

[0015] Figure 4 This is an exploded view of this utility model.

[0016] Figure 5 This is a cross-sectional view of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] This utility model discloses a lock-air unloading device for a centrifugal spray dryer. The lock-air unloading device for a centrifugal spray dryer mainly includes a discharge cylinder 1, a lock-air cover 2, a cover plate 3, a bushing 4, a pusher plate 5, a rotating shaft 6, and a motor 7. The discharge cylinder 1 is a hollow cylindrical structure. Flanges 101 are provided at both the bottom and top of the discharge cylinder 1. The cover plate 3 is installed on the flange at the bottom of the discharge cylinder 1. A fan-shaped discharge port 301 is opened on the cover plate 3. The rotating shaft 6 is installed on the cover plate 3 through bearings. The motor 7 is installed at the bottom of the cover plate 3 and is connected to the rotating shaft 6 for transmission. A bushing 4 is sleeved on the rotating shaft 6. Pusher plates 5 are evenly arranged along the circumference of the bushing 4. The side ends of the pusher plates 5 are tangent to the inner wall of the discharge cylinder 1. A fan-shaped storage area is formed between adjacent pusher plates 5. The lock-air cover 2 is installed inside the discharge cylinder 1 and is located directly above the discharge port 301.

[0019] The unloading cylinder 1 is installed at the discharge port at the bottom of the drying tower using bolts. During operation, the motor 7 is started, and the motor 7 drives the rotating shaft 6 to rotate. The rotating shaft 6 drives the pusher plate 5 to rotate through the bushing 4. The pusher plate 5 gradually pushes the material falling into the fan-shaped storage area towards the discharge port 301 for discharge. When the fan-shaped storage area rotates to the bottom of the air lock hood 2, the air lock hood 2 blocks the connection between the fan-shaped storage area and the top of the unloading cylinder 1, which can prevent airflow from entering the fan-shaped storage area at the bottom of the air lock hood 2. When the fan-shaped storage area after unloading rotates to connect with the top of the unloading cylinder 1, the bottom of the fan-shaped storage area is in a closed state, which can prevent airflow from escaping from the discharge port 301, effectively reducing the outflow of hot airflow in the drying tower, thereby ensuring the temperature stability in the drying tower and improving the drying efficiency.

[0020] The airlock hood 2 includes a semi-cylindrical outer shell 201 and a semi-conical inner shell 202 connected thereto. The top of the semi-cylindrical outer shell 201 has threaded holes equidistantly spaced along the circumferential direction. An annular connecting plate 102 is provided on the inner wall of the unloading cylinder 1. The semi-cylindrical outer shell 201 is mounted on the annular connecting plate 102 by screws. The center of the semi-cylindrical outer shell 201 and the semi-conical inner shell 202 has an arc-shaped groove 2011 that mates with the bushing 4. The arc-shaped groove 2011 is coaxial with the bushing 4. The semi-conical inner shell 202 can guide the material to flow smoothly to the fan-shaped storage area and avoid material accumulation. The semi-cylindrical outer shell 201 and the semi-conical inner shell 202 of the airlock hood 2 form a relatively closed space, which can block the airflow from escaping from the unloading port 301 and reduce the loss of hot airflow in the drying tower.

[0021] The pusher plate 5 is provided with at least 6 pieces to ensure the air-locking effect of the air-lock cover 2.

[0022] A 1-3mm gap is provided between the bottom surface of the semi-cylindrical outer shell 201 and the top surface of the pusher plate 5. The appropriate gap can prevent direct contact between the semi-cylindrical outer shell 201 and the pusher plate 5, thereby reducing friction and wear, helping to extend the service life of the component, and preventing the material from getting stuck between the semi-cylindrical outer shell 201 and the pusher plate 5, ensuring that the material can be pushed smoothly.

[0023] A rubber gasket is provided between the cover plate 3 and the flange 101 at the bottom of the unloading cylinder 1; the rubber gasket has good elasticity and compressibility, which can fill the small gap between the cover plate 3 and the flange 101 at the bottom of the unloading cylinder 1, ensure the sealing of the unloading process, and effectively reduce the outflow of air.

[0024] Work process:

[0025] The unloading cylinder 1 is installed at the discharge port at the bottom of the drying tower using bolts. During operation, the motor 7 is started, and the motor 7 drives the rotating shaft 6 to rotate. The rotating shaft 6 drives the pusher plate 5 to rotate through the bushing 4. The pusher plate 5 gradually pushes the material falling into the fan-shaped storage area towards the discharge port 301 for discharge. When the fan-shaped storage area rotates to the bottom of the air lock hood 2, the air lock hood 2 blocks the connection between the fan-shaped storage area and the top of the unloading cylinder 1, which can prevent airflow from entering the fan-shaped storage area at the bottom of the air lock hood 2. When the fan-shaped storage area after unloading rotates to connect with the top of the unloading cylinder 1, the bottom of the fan-shaped storage area is in a closed state, which can prevent airflow from escaping from the discharge port 301, effectively reducing the outflow of hot airflow in the drying tower, thereby ensuring the temperature stability in the drying tower and improving the drying efficiency.

[0026] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A wind lock discharge apparatus for a centrifugal spray dryer, characterized by: The centrifugal spray dryer's airlock unloading device includes an unloading cylinder (1), an airlock cover (2), a cover plate (3), a bushing (4), a pusher plate (5), a rotating shaft (6), and a motor (7). The unloading cylinder (1) is a hollow cylindrical structure. Flanges (101) are provided at both the bottom and top of the unloading cylinder (1). The cover plate (3) is installed on the flange at the bottom of the unloading cylinder (1). A fan-shaped unloading port (301) is opened on the cover plate (3). The rotating shaft (6) is mounted on the cover plate (3) through bearings. The motor (7) is mounted on the bottom of the cover plate (3) and connected to the rotating shaft (6) for transmission. The rotating shaft (6) is fitted with a bushing (4). The bushing (4) is evenly provided with pusher plates (5) along the circumferential direction. Its side end is tangent to the inner wall of the unloading cylinder (1). A fan-shaped storage area is formed between adjacent pusher plates (5). The air lock cover (2) is installed inside the unloading cylinder (1) and is located directly above the unloading port (301).

2. A wind lock discharge apparatus for a centrifugal spray drier as defined in claim 1, wherein: The airlock cover (2) includes a semi-cylindrical outer shell (201) and a semi-conical inner shell (202) connected thereto. The top of the semi-cylindrical outer shell (201) is provided with threaded holes at equal intervals along the circumferential direction. An annular connecting plate (102) is provided on the inner wall of the unloading cylinder (1). The semi-cylindrical outer shell (201) is installed on the annular connecting plate (102) by screws.

3. A wind lock discharge apparatus for a centrifugal spray dryer as defined in claim 2, wherein: The semi-cylindrical outer shell (201) and the semi-conical inner shell (202) are provided with an arc-shaped groove (2011) that mates with the bushing (4) at their center. The arc-shaped groove (2011) is coaxial with the bushing (4).

4. A wind lock discharge apparatus for a centrifugal spray drier as defined in claim 3 wherein: The pusher plate (5) is provided with at least 6 pieces.

5. A wind lock discharge apparatus for a centrifugal spray drier as defined in claim 3 wherein: A gap of 1-3mm is provided between the bottom surface of the semi-cylindrical outer shell (201) and the top of the pusher plate (5).

6. The airlock unloading device for a centrifugal spray dryer as described in claim 3, characterized in that: A rubber gasket is provided between the cover plate (3) and the flange (101) at the bottom of the unloading cylinder (1).

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