Rotary drying device for titanium gypsum

Abstract

The utility model belongs to the technical field of titanium gypsum processing, and particularly discloses a titanium gypsum rotary drying device which comprises a base, a drying cylinder, a material conveying mechanism and an air heater, two supporting seats are arranged on the base, the drying cylinder is rotatably connected with the supporting seats, an impact cylinder is fixedly connected to the outer side of the drying cylinder, and an impact ball is slidably connected into the impact cylinder. The drying cylinder is obliquely arranged, the obliquely-downward end of the drying cylinder is a discharging end, the other end of the drying cylinder is a feeding end, and the output end of the air heater faces the discharging end of the drying cylinder. According to the titanium gypsum powder drying device, the impact cylinder and the impact balls are arranged, the drying cylinder rotates and drives the impact cylinder to move at the same time, the impact balls in the impact cylinder continuously fall to knock the outer wall of the drying cylinder under the action of gravity, and titanium gypsum powder adhering to the interior of the drying cylinder is cleared through knocking vibration; the phenomenon that the adhered titanium gypsum powder forms a titanium gypsum layer to weaken the drying effect is prevented, and the drying efficiency of the titanium gypsum is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of titanium gypsum processing, and particularly relates to a rotary drying device for titanium gypsum. Background Technique

[0002] Titanium gypsum is mainly a by-product generated in the process of producing synthetic rutile by the sulfuric acid method. After sulfuric acid decomposes titanium concentrate, metatitanic acid is separated by hydrolysis method for producing synthetic rutile, and the remaining solution mainly contains ferrous sulfate and surplus free sulfuric acid. After treating this part of the solution, a mixture containing components such as calcium sulfate, ferrous sulfate, iron hydroxide and titanium dioxide is generated. After steps such as neutralization and filtration, titanium gypsum powder is obtained. The titanium gypsum powder has fine particles and a high free water content, resulting in problems such as low strength and easy moisture absorption when directly utilized, and it is difficult to be directly utilized. At present, the main utilization method of titanium gypsum is to reduce the moisture content of titanium gypsum powder to a certain level through drying treatment and then use it as a cement retarder. The existing rotary drying devices for titanium gypsum can basically meet the use requirements, but during the use process, titanium gypsum powder will adhere to the inner surface of the drying cylinder, accumulating thicker and thicker to form a layer of titanium gypsum, affecting the subsequent drying effect of titanium gypsum. For this reason, operators need to frequently clean the adhered titanium gypsum powder, resulting in low drying efficiency of titanium gypsum. Therefore, it is necessary to design a rotary drying device for titanium gypsum that can avoid a large amount of accumulation of titanium gypsum powder on the inner surface of the drying cylinder. Content of the Utility Model

[0003] Aiming at the above technical problems, the utility model provides a rotary drying device for titanium gypsum that can avoid a large amount of accumulation of titanium gypsum on the inner surface of the drying cylinder.

[0004] To solve the above technical problems, the technical solution of the utility model is: a rotary drying device for titanium gypsum, including a base, a drying cylinder, a material conveying mechanism, and a hot air blower. The drying cylinder, the material conveying mechanism, and the hot air blower are all fixedly connected to the base. A central shaft is arranged at the center inside the drying cylinder, and the central shaft is fixedly connected to the inner wall of the drying cylinder through a connecting rod. One end of the central shaft extends out of the drying cylinder and is fixedly connected with a pulley. A motor is fixedly connected to the base, and the output end of the motor is connected to the pulley through a belt drive. Two support seats are fixedly connected to the base, and the outer side wall of the drying cylinder is rotatably connected to the upper ends of the support seats. An impact cylinder is fixedly connected to the outside of the drying cylinder, and an impact ball that moves along the axial direction of the impact cylinder is slidably connected inside the impact cylinder. The drying cylinder is inclined, with the inclined downward end being the discharge end and the other end being the feed end, and the output end of the hot air blower faces the discharge end of the drying cylinder;

[0005] The material conveying mechanism includes a feeding auger conveyor arranged at the feeding end of the drying cylinder and a discharging auger conveyor arranged at the discharging end of the drying cylinder. The input end of the feeding auger conveyor is fixedly connected with a feeding bin, and the output end extends into the interior of the feeding end of the drying cylinder. The input end of the discharging auger conveyor is fixedly connected with a receiving hopper, and the upper end of the receiving hopper is located below the discharging end of the drying cylinder.

[0006] Furthermore, at least four impact cylinders are provided, and an impact ball is slidably connected in each impact cylinder.

[0007] Furthermore, a dust suction hood is arranged above the drying cylinder, and the upper end of the dust suction hood is fixedly connected with the input end of a dust collector.

[0008] Furthermore, a groove is formed in the outer side wall of the drying cylinder corresponding to the support seat. A roller is rotatably connected to the upper end of the support seat. The width of the groove is the same as the width of the roller, and the roller is slidably embedded in the groove.

[0009] Furthermore, a filter screen is covered on the air inlet of the hot air blower.

[0010] The utility model has the following advantages compared with the prior art:

[0011] By arranging impact cylinders and impact balls on the drying cylinder, when the drying cylinder rotates, it drives the impact cylinders to move, so that the impact balls in the impact cylinders continuously fall under the action of gravity and knock on the outer wall of the drying cylinder. The adhered titanium gypsum powder in the drying cylinder is cleaned by knocking vibration, replacing manual cleaning, preventing the adhered titanium gypsum powder from forming a titanium gypsum layer and weakening the drying effect, and improving the drying efficiency of titanium gypsum; by arranging a hot air blower at the discharging end of the drying cylinder, hot air is sent into the drying cylinder from the discharging end and sent out from the feeding end. By setting reverse hot air opposite to the movement direction of the titanium gypsum material, the water vapor in the titanium gypsum material can be carried out from the feeding end, preventing the water vapor in the hot air from being reabsorbed by the titanium gypsum, and further improving the drying efficiency of titanium gypsum. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic internal structure diagram of the utility model.

[0013] Figure 2 is a schematic external structure diagram of the drying cylinder of the utility model.

[0014] Figure 3 is a side view of the drying cylinder of the utility model.

[0015] In the figure: 1, base; 2, drying cylinder; 3, hot air blower; 4, filter screen; 5, central shaft; 6, connecting rod; 7, pulley; 8, motor; 9, support base; 10, impact cylinder; 11, impact ball; 12, feeding auger conveyor; 13, discharging auger conveyor; 14, feeding bin; 15, receiving hopper; 16, dust suction hood; 17, groove. Detailed implementation mode

[0016] The present utility model will be further described below in conjunction with the attached drawings.

[0017] As Figures 1 to 3 shown, a rotary drying device for titanium gypsum includes a base 1, a drying cylinder 2, a material conveying mechanism, and a hot air blower 3. The drying cylinder 2, the material conveying mechanism, and the hot air blower 3 are all fixedly connected to the base 1. A central shaft 5 is arranged at the center inside the drying cylinder 2. The central shaft 5 is fixedly connected to the inner wall of the drying cylinder 2 through a connecting rod 6. One end of the central shaft 5 extends out of the drying cylinder 2 and is fixedly connected to a pulley 7. A motor 8 is fixedly connected to the base 1. The output end of the motor 8 is connected to the pulley 7 through a belt drive. Two support bases 9 are fixedly connected to the base 1. The outer side wall of the drying cylinder 2 is rotatably connected to the upper ends of the support bases 9. An impact cylinder 10 is fixedly connected to the outer side of the drying cylinder 2. An impact ball 11 that moves along the axial direction of the impact cylinder 10 is slidably connected inside the impact cylinder 10. The drying cylinder 2 is inclined, and the inclined downward end is the discharging end, and the other end is the feeding end. The motor 8 and the support bases 9 are inclined synchronously with the inclination direction and angle of the drying cylinder 2 to ensure that the transmission between the output end of the motor 8 and the pulley 7 is not affected, and the rotational connection between the outer wall of the drying cylinder 2 and the support bases 9 is not affected. The hot air blower 3 is located on one side of the discharging end of the drying cylinder 2. The output end of the hot air blower 3 faces the discharging end of the drying cylinder 2. The hot air enters from the discharging end of the drying cylinder 2 and is discharged from the feeding end of the drying cylinder 2;

[0018] The material conveying mechanism includes a feeding auger conveyor 12 arranged at the feeding end of the drying cylinder 2 and a discharging auger conveyor 13 arranged at the discharging end of the drying cylinder 2. The input end of the feeding auger conveyor 12 is fixedly connected to a feeding bin 14, and the output end extends into the inside of the feeding end of the drying cylinder 2. The input end of the discharging auger conveyor 13 is fixedly connected to a receiving hopper 15. The upper end of the receiving hopper 15 is located below the discharging end of the drying cylinder 2. The upper end of the receiving hopper 15 is open, and the dried titanium gypsum discharged from the discharging end of the drying cylinder 2 can be received and collected, and then conveyed out through the discharging auger conveyor 13.

[0019] In order to clean the titanium gypsum adhering to the inner wall of the drying cylinder 2 in time by knocking and vibrating, at least four impact cylinders 10 are provided. The axial distance between every two adjacent impact cylinders 10 is equal. And the four impact cylinders 10 are respectively arranged in the upper, lower, left and right directions on the outer wall of the drying cylinder 2. A collision ball 11 is slidably connected in each impact cylinder 10. Whenever the impact cylinder 10 follows the drying cylinder 2 to rotate to the upper half, the collision ball 11 in the impact cylinder 10 falls under the action of gravity to strike the drying cylinder 2. Whenever the impact cylinder 10 follows the drying cylinder 2 to rotate to the lower half, the collision ball 11 falls back into the bottom of the impact cylinder 10 again, and so on.

[0020] In order to collect and centrally process the dust generated during the drying process, a dust suction hood 16 is arranged above the drying cylinder 2. The upper end of the dust suction hood 16 is fixedly connected to the input end of the dust collector.

[0021] In order to locate the contact position between the drying cylinder 2 and the support seat 9 and prevent the drying cylinder 2 from falling off the support seat 9 during rotation, a groove 17 is opened on the outer side wall of the drying cylinder 2 corresponding to the support seat 9. A roller is rotatably connected to the upper end of the support seat 9. Two identical rollers are rotatably connected to each support seat 9. The width of the groove 17 is the same as the width of the roller at the upper end of the support seat 9. The roller is slidably embedded in the groove 17.

[0022] In order to prevent dust from entering the hot air blower 3 and damaging the equipment, a filter screen 4 is covered on the air inlet of the hot air blower 3.

[0023] The specific working process of the present utility model is as follows:

[0024] Start the motor 8, the hot air blower 3, and the dust collector connected to the dust suction hood 16. The output end of the motor 8 drives the pulley 7 to rotate. The pulley 7 drives the drying cylinder 2 to rotate on the support seat 9 through the central shaft 5 and the connecting rod 6. Add the titanium gypsum to be dried into the feeding bin 14. Start the feeding screw conveyor 12 and the discharging screw conveyor 13. The titanium gypsum is transported to the drying cylinder 2 by the feeding screw conveyor 12. Along the inclined wall of the drying cylinder 2, it continuously moves towards the discharging end of the drying cylinder 2. The hot air blown out by the hot air blower 3 enters from the discharging end of the drying cylinder 2, continuously taking away the water vapor in the titanium gypsum and discharging it from the feeding end of the drying cylinder 2. The dried titanium gypsum is transported to the storage warehouse through the discharging screw conveyor 13. During this process, the collision ball 11 in the impact cylinder 10 continuously strikes the outer wall of the drying cylinder 2 under the action of gravity, generating vibration to clean the titanium gypsum powder adhering to the inner wall of the drying cylinder 2.

Claims

1. A titanium gypsum rotary drying device, comprising a base (1), a drying cylinder (2), a material conveying mechanism, and a hot air blower (3), wherein the drying cylinder (2), the material conveying mechanism, and the hot air blower (3) are all fixedly connected to the base (1), characterized in that: A central axis (5) is arranged at the center of the drying cylinder (2), and the central axis (5) is fixedly connected to the inner wall of the drying cylinder (2) through a connecting rod (6); one end of the central axis (5) extends out of the drying cylinder (2) and is fixedly connected to a pulley (7); a motor (8) is fixedly connected to the base (1); an output end of the motor (8) and the pulley (7) are connected via a belt transmission; two support seats (9) are fixedly connected to the base (1); the outer wall of the drying cylinder (2) is rotatably connected to the upper end of the support seat (9); an impact cylinder (10) is fixedly connected to the outer side of the drying cylinder (2); an impact ball (11) is slidably connected inside the impact cylinder (10) and moves along the axial direction of the impact cylinder (10); one end of the drying cylinder (2) which is inclined and inclined downward is a discharging end, and the other end is a feeding end; the output end of the hot air blower (3) faces the discharging end of the drying cylinder (2); The material conveying mechanism comprises a feeding auger conveyor (12) arranged at the feeding end of the drying cylinder (2) and a discharging auger conveyor (13) arranged at the discharging end of the drying cylinder (2), wherein the input end of the feeding auger conveyor (12) is fixedly connected to a feeding bin (14), and the output end extends into the interior of the feeding end of the drying cylinder (2), and the input end of the discharging auger conveyor (13) is fixedly connected to a receiving hopper (15), and the upper end of the receiving hopper (15) is located at the lower side of the discharging end of the drying cylinder (2).

2. The titanium gypsum rotary drying device according to claim 1, characterized in that: At least four impact tubes (10) are provided, and the impact ball (11) is slidably connected in each impact tube (10).

3. The titanium gypsum rotary drying device according to claim 1, characterized in that: A dust hood (16) is arranged above the drying cylinder (2), and the upper end of the dust hood (16) is fixedly connected to the input end of the dust collector.

4. The titanium gypsum rotary drying device according to claim 1, characterized in that: A groove (17) is provided on the outer wall of the drying cylinder (2) at a position corresponding to the support seat (9); a roller is rotatably connected to the upper end of the support seat (9); the width of the groove (17) is the same as the width of the roller, and the roller is slidably embedded in the groove (17).

5. The titanium gypsum rotary drying device according to claim 1, characterized in that: A filter screen (4) is provided on the air inlet cover of the hot air blower (3).

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