Inorganic powder drying and screening device

Abstract

An inorganic powder drying and screening device comprises a drying box (1), a screening box (2) and a spiral conveyor (3). A feed port is formed in the top of the drying box, a discharge port is formed in the bottom, and a hot air distribution plate (4) and a hot air circulating system (5) are arranged in the drying box; a plurality of uniformly distributed vent holes are formed in the hot air distribution plate; the hot air circulating system comprises an air heater, a heater and an air duct; the screening box is located below the drying box, at least two layers of screens (6) are arranged in the screening box, and a vibration motor (7) is arranged on one side of the screening box and used for driving the screens to vibrate; a plurality of discharge holes are formed in the box wall of the lower part of the screening box; the feeding end of the spiral conveyor is connected with a discharging port of the drying box, and the discharging end of the spiral conveyor is connected with a feeding port of the screening box. A temperature sensor (8) and a humidity sensor (9) are further arranged on the top in the drying box and connected with a controller (10), and the controller automatically adjusts the air speed of the air heater and the power output of the heater according to monitoring data.

Description

Technical Field

[0001] This utility model relates to an inorganic powder drying and sieving device, belonging to the field of inorganic powder drying and sieving technology. Background Technology

[0002] Inorganic powders have wide applications in various fields such as chemical engineering, building materials, and pharmaceuticals. During the production process, inorganic powders typically require drying and sieving.

[0003] Traditional drying and sieving devices have the following problems: First, the drying efficiency is low and the hot air distribution is uneven, resulting in some powders not being dried thoroughly; second, the sieving accuracy is insufficient, making it difficult to effectively separate powders of different particle sizes; and third, the equipment structure is complex and the maintenance cost is high.

[0004] Therefore, it is of great significance to design an efficient, accurate and easy-to-maintain inorganic powder drying and sieving device. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of low drying efficiency, insufficient sieving accuracy and complex equipment maintenance in the existing technology, and to propose an inorganic powder drying and sieving device.

[0006] The technical solution of this utility model is as follows: an inorganic powder drying and sieving device includes a drying box, a sieving box, and a screw conveyor. The drying box has a feed inlet at the top and a discharge outlet at the bottom. The box is equipped with a hot air distribution plate and a hot air circulation system. The hot air distribution plate has multiple evenly distributed air vents for evenly distributing hot air into the powder. The hot air circulation system includes a hot air blower, a heater, and an air duct. The hot air blower sends heated hot air into the drying box through the air duct, while simultaneously extracting the humid and hot air in the drying box and reheating it for reuse.

[0007] The screening box is located below the drying box and has at least two layers of screens inside, with the screen aperture decreasing from top to bottom. A vibration motor is provided on one side of the screening box to drive the screen to vibrate, so that the powder is fully screened on the screen. The lower wall of the screening box has multiple discharge ports, which correspond to the powder of the corresponding particle size screened by different aperture screens. The bottom of the screening box has a finished product discharge port.

[0008] The feed end of the screw conveyor is connected to the discharge port of the drying box, and the discharge end is connected to the feed port of the screening box.

[0009] The top of the drying chamber is also equipped with a temperature sensor and a humidity sensor to monitor the temperature and humidity inside the drying chamber in real time. The temperature sensor and humidity sensor are connected to a controller placed outside the drying chamber via wires. The controller automatically adjusts the air speed of the hot air blower and the power output of the heater based on the monitoring data.

[0010] The hot air distribution plate is installed on one side of the inner wall of the drying chamber, and delivers hot air to the drying chamber in a radial direction from top to bottom; the other side of the inner wall of the drying chamber is provided with a humid and hot air outlet and a recovery pipe, which are connected to the hot air circulation system.

[0011] The screen of the screening box is made of stainless steel and the surface is polished to reduce powder adhesion.

[0012] The screen's support structure is elastic, which can effectively buffer vibration and extend the screen's service life.

[0013] The screw conveyor is driven by a variable frequency speed control motor, which can adjust the conveying speed according to the flow rate and particle size of the powder, thereby improving the conveying efficiency.

[0014] The outer shells of both the drying chamber and the screening chamber are made of heat-insulating materials to reduce heat loss and improve energy efficiency.

[0015] The beneficial effects of this invention are as follows: By incorporating a hot air distribution plate and a hot air circulation system within the drying chamber, the hot air is evenly distributed and circulated, improving drying efficiency and heat energy utilization. The multi-layer screen design and the use of a vibrating motor effectively separate powders of different particle sizes, improving sieving accuracy. The intelligent control system automatically adjusts drying parameters based on real-time monitoring data, ensuring stable drying results. Furthermore, the compact structure and convenient maintenance of this device reduce production and maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] In the diagram: 1 is the drying box; 2 is the screening box; 3 is the screw conveyor; 4 is the hot air distribution plate; 5 is the hot air circulation system; 6 is the screen; 7 is the vibrating motor; 8 is the temperature sensor; 9 is the humidity sensor; and 10 is the controller. Detailed Implementation

[0018] The specific embodiments of this utility model are as follows: Figure 1 As shown.

[0019] This embodiment discloses an inorganic powder drying and sieving device, including a drying chamber 1, a sieving chamber 2, and a screw conveyor 3. The sieving chamber 2 is located directly below the drying chamber 1, and the screw conveyor 3 is located between the sieving chamber 2 and the drying chamber 1.

[0020] In this embodiment, the drying chamber 1 is provided with a feed inlet at the top and a discharge outlet at the bottom. The chamber is equipped with a hot air distribution plate 4 and a hot air circulation system 5. The hot air distribution plate 4 is provided with a plurality of evenly distributed air vents for distributing hot air evenly into the powder. The hot air circulation system 5 includes a hot air blower, a heater and an air duct. The hot air blower sends the heated hot air into the drying chamber through the air duct, and at the same time extracts the hot and humid air in the drying chamber and reheats it for recycling, thereby improving the thermal energy utilization rate.

[0021] In this embodiment, the screening box 2 is located below the drying box 1, and has at least two layers of screens 6 inside, with the screen aperture decreasing from top to bottom; a vibration motor 7 is provided on one side of the screening box 2 to drive the screen to vibrate, so that the powder is fully screened on the screen; the bottom of the screening box is provided with multiple discharge ports, which correspond to powders of different particle sizes.

[0022] In this embodiment, the feed end of the screw conveyor 3 is connected to the discharge port of the drying box 1, and the discharge end is connected to the feed port of the screening box 2.

[0023] In this embodiment, the drying chamber 1 is also equipped with a temperature sensor 8 and a humidity sensor 9 for real-time monitoring of the temperature and humidity inside the drying chamber. The temperature sensor 8 and the humidity sensor 9 are connected to a controller 10 placed outside the drying chamber via wires. The controller 10 automatically adjusts the air speed of the hot air blower and the power of the heater according to the monitoring data to achieve intelligent drying control.

[0024] In this embodiment, the screen 6 of the screening box 2 is made of stainless steel with a polished surface to reduce powder adhesion. The support structure of the screen 6 is elastic, which can effectively buffer vibration and extend the service life of the screen. The screw conveyor 3 uses a variable frequency speed control motor, which can adjust the conveying speed according to the powder flow rate and particle size to improve conveying efficiency. The outer shells of both the drying box 1 and the screening box 2 are made of heat-insulating material to reduce heat loss and improve energy utilization efficiency.

Claims

1. An inorganic powder drying and sieving device, comprising a drying chamber, a sieving chamber, and a screw conveyor, characterized in that, The drying chamber is equipped with a feed inlet at the top and a discharge outlet at the bottom. Inside the chamber, there is a hot air distribution plate and a hot air circulation system. The hot air distribution plate has multiple evenly distributed air vents to distribute the hot air evenly into the powder. The hot air circulation system includes a hot air blower, a heater, and an air duct. The hot air blower sends the heated air into the drying chamber through the air duct, while simultaneously extracting the humid and hot air inside the drying chamber and reheating it for reuse. The screening box is located directly below the drying box and has at least two layers of screens inside, with the screen aperture decreasing from top to bottom. A vibration motor is provided on one side of the screening box to drive the screen to vibrate, so that the powder is fully screened on the screen. The lower wall of the screening box has multiple discharge ports, which correspond to the powder of the corresponding particle size screened by different aperture screens. The bottom of the screening box has a finished product discharge port. The screw conveyor is located between the drying chamber and the screening chamber. The feed end of the screw conveyor is connected to the discharge port of the drying chamber, and the discharge end is connected to the feed port of the screening chamber. The top of the drying chamber is also equipped with a temperature sensor and a humidity sensor for real-time monitoring of the temperature and humidity inside the drying chamber. The temperature sensor and humidity sensor are connected to a controller, which automatically adjusts the fan speed and the power output of the heater based on the monitoring data.

2. The inorganic powder drying and sieving device according to claim 1, characterized in that, The hot air distribution plate is installed on one side of the inner wall of the drying chamber, and delivers hot air to the drying chamber in a radial direction from top to bottom; the other side of the inner wall of the drying chamber is provided with a humid and hot air outlet and a recovery pipe, which are connected to the hot air circulation system.

3. The inorganic powder drying and sieving device according to claim 1, characterized in that, The screen of the screening box is made of stainless steel and the surface is polished to reduce powder adhesion.

4. The inorganic powder drying and sieving device according to claim 1, characterized in that, The screen's support structure is elastic, which can effectively buffer vibration and extend the screen's service life.

5. The inorganic powder drying and sieving device according to claim 1, characterized in that, The screw conveyor is driven by a variable frequency speed control motor, which can adjust the conveying speed according to the flow rate and particle size of the powder, thereby improving the conveying efficiency.

6. The inorganic powder drying and sieving device according to claim 1, characterized in that, The outer shells of both the drying chamber and the screening chamber are made of heat-insulating material to reduce heat loss.

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