Calcium aluminate calcination batching device

Abstract

The utility model discloses a calcium aluminate calcination batching device, and belongs to the technical field of calcium aluminate processing. The device comprises a rack, a motor, a speed reducer, a barrel, a rotating shaft, a batching bin and the like, the top of the batching bin is provided with two feeding ports connected with raw material bins respectively, hoppers corresponding to the feeding ports are arranged in the batching bin, weighing sensors are installed below the hoppers, and pneumatic flashboard mechanisms are arranged at discharging ports; meanwhile, discharging ports are formed in the two sides of the batching bin, an arc-shaped sieve plate and a slide carriage structure are additionally arranged in the batching bin, the uniformity and the qualified rate of the raw materials are guaranteed, and a weighing sensor controls an electric material valve and a pneumatic gate plate mechanism through a controller to achieve accurate batching. According to the utility model, the problems of low efficiency and large proportioning error of the traditional manual proportioning, and easy blockage and inaccurate metering of the control of the existing electric material valve are solved, the accurate proportioning of the bauxite waste residue and the limestone powder is realized, the proportioning efficiency and the quality stability are improved, and the subsequent calcining effect is further guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of calcium aluminate processing technology, specifically relating to a calcium aluminate calcination batching device. Background Technology

[0002] In the production and processing of calcium aluminate, the batching process before calcination requires extremely high precision in the raw material ratio, directly determining the quality and performance of the final product. Traditional batching methods rely on manual operation. Workers must first weigh the bauxite waste and limestone powder, then manually add them to the mixing equipment at a 1:1 mass ratio. This method is not only slow and inefficient, but also wastes raw materials due to manual spillage. More importantly, manual operation is prone to ratio errors, directly affecting the sufficiency of the subsequent calcination reaction, resulting in insufficient purity and unstable performance of the calcium aluminate product.

[0003] Currently, some companies are using electric feed valves to precisely control the amount of two raw materials in the calcium aluminate batching process. However, this method has significant drawbacks in practical application: bauxite waste and limestone powder are mostly irregular particles, which easily cause blockage at the electric feed valve, leading to supply interruptions. Furthermore, the electric feed valve can only regulate the flow rate by controlling the opening degree and cannot directly monitor the actual weight of the material being fed, resulting in measurement deviations and affecting the accuracy of the batching. In addition, if the electric feed valve malfunctions, it requires shutdown for repair, which not only consumes a lot of manpower and resources but also causes production interruptions, severely reducing overall production efficiency.

[0004] Therefore, for the batching process before calcination of calcium aluminate, designing a special equipment that can achieve precise metering and proportioning to ensure that the ratio of bauxite waste residue to limestone powder is accurately controllable is crucial for increasing calcium aluminate production, improving product quality, and enhancing production efficiency. Utility Model Content

[0005] To address the problems existing in the background technology, this utility model provides a calcium aluminate calcination batching device.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a calcium aluminate calcination batching device, comprising a frame and a motor, a reducer, and a first bearing support mounted thereon. A cylinder is mounted on the frame via a support frame. A rotating shaft is rotatably arranged inside the cylinder. One end of the rotating shaft passes through the cylinder and is mounted on the frame via the first bearing support, and its end is connected to the output end of the reducer via a coupling. The input end of the reducer is connected to the output shaft of the motor via a coupling. Screwdriver blades are provided on the rotating shaft. A discharge port is connected to the bottom of one end of the cylinder. A batching hopper is provided on the other end face of the cylinder via a support frame. A batching hopper is provided on the batching hopper. The bearing chamber contains a second bearing support. The other end of the rotating shaft is connected to the second bearing support. A first feed inlet and a second feed inlet are provided on the top of the batching silo, and both are connected to the raw material silo via electric feed valves. Discharge outlets are provided on the end faces of the batching silo located on both sides of the second bearing support. A pneumatic gate mechanism is provided on each discharge outlet. Two hoppers are provided in the batching silo, and they are located directly below the first feed inlet and the second feed inlet, respectively. A weighing sensor is provided below each hopper. The weighing sensor monitors the weight of the material in the hopper in real time and uses a controller to control the electric feed valve and the pneumatic gate mechanism to achieve precise batching.

[0007] As a further supplement to the above technical solution, a support plate is provided inside the batching bin, the hopper is mounted on the support plate via a telescopic rod, and the weighing sensor is mounted on the support plate.

[0008] As a further explanation of the above technical solution, a contact rod is fixed at the bottom of the hopper, and the hopper contacts the upper pressure plate of the weighing sensor through the contact rod to monitor the weight of the material in real time.

[0009] As a further supplement to the above technical solution, the pneumatic gate mechanism includes a gate, a cylinder, and a matching power control system. The cylinder is fixed on the feeding hopper by a mounting base, and its piston rod end is connected to the gate. Tracks are provided on both sides of each discharge port, and the gate is inserted between the two tracks. After receiving the signal from the weighing sensor through the controller, the power control system uses a solenoid valve to control the extension and retraction of the cylinder to drive the gate to open and close and adjust the unloading amount.

[0010] As a further supplement to the above technical solution, an arc-shaped sieve plate is fixed in the batching silo by a partition, and discharge ports are provided on both sides of the batching silo. The discharge ports are used to discharge materials with unqualified particle sizes after being screened by the arc-shaped sieve plate.

[0011] As a further supplement to the above technical solution, a chute is inclinedly arranged inside the batching bin, and the chute guides the material onto the arc-shaped screen plate to prevent the material from being discharged directly from the discharge port.

[0012] As a further supplement to the above technical solution, the discharge port is connected to the support frame via a connecting plate, and the connecting plate is fixed to the frame by an oblique support.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. This utility model, by installing a weighing sensor, a hopper, and a pneumatic gate mechanism in the batching bin, allows the weighing sensor to monitor the weight of the material in the hopper in real time. Combined with the controller, it automatically adjusts the feeding amount of the electric feed valve and the unloading action of the pneumatic gate, thereby achieving a precise ratio of bauxite waste residue and limestone powder. This reduces human operation errors, ensures that the mixing ratio of raw materials is strictly controllable, and effectively solves the problems of low efficiency and large ratio errors in traditional manual batching.

[0015] 2. This utility model utilizes the conveying structure of the cylinder, rotating shaft, and auger spiral blades, along with the automatic batching function of the batching bin, to form a continuous production process, significantly improving batching efficiency. The device reduces manual intervention, lowering the risk of production interruptions due to operational errors. Simultaneously, the stable connection of each component and convenient maintenance, compared to the separate control of electric material valves, better ensures production continuity and reduces downtime maintenance costs.

[0016] 3. This utility model, through the addition of an arc-shaped sieve plate and a chute structure, along with discharge ports on both sides of the batching hopper, enables particle size screening of raw materials. By removing materials with unqualified particle sizes, the uniformity and pass rate of the raw materials are ensured, thereby improving the quality of the final calcium aluminate product. The chute design effectively guides the material flow, avoiding material waste during the screening process and reducing production costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the feeding device in this utility model;

[0018] Figure 2 This is a schematic diagram of the material mixing bin and the rotating shaft connection part of the material mixing device in this utility model;

[0019] Figure 3 This is a schematic diagram of the pneumatic gate mechanism and the discharge port of the batching device in this utility model.

[0020] Figure 4 This is a schematic diagram showing the layout of the hopper, weighing sensor and screening components inside the batching device of this utility model.

[0021] Figure 5This is a schematic diagram illustrating the principle of raw material conveying and unqualified raw material separation in the batching device of this utility model.

[0022] In the diagram: 1 is the frame, 2 is the support frame, 3 is the cylinder, 4 is the batching bin, 5 is the first feed inlet, 6 is the second feed inlet, 7 is the discharge port, 8 is the motor, 9 is the reducer, 10 is the first bearing support, 11 is the rotating shaft, 12 is the auger spiral blade, 13 is the bearing groove chamber, 14 is the second bearing support, 15 is the discharge port, 16 is the track, 17 is the gate, 18 is the mounting base, 19 is the cylinder, 20 is the partition plate, 21 is the arc-shaped screen plate, 22 is the discharge port, 23 is the support plate, 24 is the telescopic rod, 25 is the hopper, 26 is the weighing sensor, 27 is the contact rod, 28 is the chute, 29 is the connecting plate, and 30 is the inclined support. Detailed Implementation

[0023] To further illustrate the technical solution of this utility model, the following description is in conjunction with the appendix. Figures 1 to 5 The present invention will be further described in detail through two embodiments. Example 1

[0024] As attached Figures 1 to 4 As shown, a calcium aluminate calcination batching device mainly includes a frame 1 and a motor 8, a reducer 9, and a first bearing support 10 mounted on the frame 1. A cylinder 3 is mounted on the frame 1 via a support frame 2, and a rotating shaft 11 is rotatably mounted inside the cylinder 3. One end of the rotating shaft 11 passes through the cylinder 3 and is mounted on the frame 1 via the first bearing support 10. Its end is connected to the output end of the reducer 9 via a coupling, and the input end of the reducer 9 is connected to the output shaft of the motor 8 via a coupling. A screw conveyor blade 12 is provided on the rotating shaft 11, and a discharge port 7 is connected to the bottom of one end of the cylinder 3.

[0025] This batching device is based on a modified screw conveyor design. A batching bin 4 is installed on the other end face of the cylinder 3 via a support frame 2. A bearing groove chamber 13 is installed on the batching bin 4, and a second bearing support 14 is installed within the bearing groove chamber 13. The other end of the rotating shaft 11 is connected to the second bearing support 14. A first feed inlet 5 and a second feed inlet 6 are located at the top of the batching bin 4, both connected to the raw material bin via electric feed valves. Discharge outlets 15 are respectively opened on the end faces of the batching bin 4 located on both sides of the second bearing support 14, and each discharge outlet 15 is equipped with a pneumatic gate mechanism. Two hoppers 25 are installed inside the batching bin 4, located directly below the first feed inlet 5 and the second feed inlet 6, respectively. A support plate 23 is installed inside the batching bin 4, and the hoppers 25 are mounted on the support plate 23 via telescopic rods 24. Weighing sensors 26 are installed on the support plate 23. A contact rod 27 is fixed to the bottom of the hopper 25. The hopper 25 contacts the upper pressure plate of the weighing sensor 26 through the contact rod 27 to monitor the weight of the material in real time.

[0026] Furthermore, the pneumatic gate mechanism includes a gate 17, a cylinder 19, and a matching power control system. The cylinder 19 is fixed to the feeding bin 4 via a mounting base 18, and its piston rod end is connected to the gate 17. Each discharge port 15 has rails 16 on both sides, and the gate 17 is inserted between two rails 16. Example 2

[0027] In the process of calcium aluminate calcination batching, the particle size of the raw materials has a significant impact on the quality of the final product. Although Example 1 allows for weighing and batching of the two raw materials to achieve precise mixing, it cannot screen the particle size of the raw materials. When materials with unqualified particle sizes are mixed into the raw materials, these unqualified materials will directly enter the mixing stage, resulting in a decrease in batch purity, which in turn affects the reaction efficiency and product performance of subsequent calcium aluminate calcination.

[0028] To address this issue, a sieving process for raw material particle size needs to be added during the batching process to remove substandard materials and ensure that all materials entering the mixture meet the particle size requirements, thereby improving the quality stability of the calcined calcium aluminate product. Based on this, Example 1 was further optimized, as shown in the attached figure. Figure 4 and 5 As shown, an arc-shaped screen plate 21 is fixed inside. The middle part of the arc-shaped screen plate 21 is arched and connected to the top of the batching bin 4 through a vertical partition 20. The two side edges of the arc-shaped screen plate 21 are fixed to the inner wall of the cylinder 3 through horizontal partitions 20, forming two screening areas. The aperture of the arc-shaped screen plate 21 is preferably 2-5mm according to the raw material particle size requirements. Discharge ports 22 are provided on both sides of the batching bin 4. The discharge ports 22 are used to discharge materials with unqualified particle sizes after being screened by the arc-shaped screen plate 21. An inclined chute 28 is provided inside the batching bin 4, which guides the material onto the arc-shaped screen plate 21. The discharge ports 22 are connected to the support frame 2 through a connecting plate 29. The connecting plate 29 is fixed to the frame 1 by an inclined support 30.

[0029] Specific usage methods and working principles:

[0030] In operation, limestone and bauxite waste in the raw material silo enter the batching silo 4 through the first feed inlet 5 and the second feed inlet 6. The falling material is guided by the chute 28 to the arc-shaped screen plate 21. Qualified material passes through the arc-shaped screen plate 21 and continues to fall into the corresponding hopper 25, while unqualified material is intercepted and discharged through the discharge port 22. The hopper 25 transmits its weight to the weighing sensor 26 through the contact rod 27. The weighing sensor 26 monitors the material weight in real time and transmits the signal to the controller. When the material weight reaches the set value, the controller controls the electric feed valve to close, stopping the feeding. Subsequently, the controller controls the power control system, using the solenoid valve to control the cylinder 19 to extend and retract, driving the gate 17 to move along the track 16 to open the discharge port 15. The two materials fall into the cylinder 2 along the bottom slope of the hopper 25. When the weighing sensor 26 detects that the weight of the hopper 25 returns to the no-load threshold, the controller controls the cylinder 19 to reset, causing the gate 17 to close the discharge port 15 and reopening the electric feed valve to enter the next batching cycle. When the material enters the cylinder 3, the motor 8 starts and drives the rotating shaft 11 to rotate through the reducer 9. The auger spiral blades 12 rotate with the rotating shaft 11, and the material is mixed during the process of being transported to the discharge port 7. Finally, the material is discharged from the discharge port 7 to complete the batching.

[0031] Furthermore, during the batching process, non-compliant particles generated after screening by the arc-shaped screen plate 21 will be discharged through the discharge ports 22 on both sides of the batching silo. After being discharged, these non-compliant particles will undergo crushing, grinding, and other processing steps, and then be used as raw materials in the batching process again, realizing the recycling of raw materials and reducing resource waste.

[0032] The foregoing has shown and described the main features and advantages of this utility model. It will be apparent to those skilled in the art that the specific embodiments of this utility model are not limited to the details of the exemplary embodiments described above. Furthermore, without departing from the spirit or essential characteristics of this utility model, the inventive concept and design ideas of this utility model can be implemented in other specific forms, and these should be equivalently included within the protection scope disclosed in the technical solution of this utility model. Therefore, in all respects, the embodiments should be considered exemplary and non-limiting. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included within this utility model.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A calcium aluminate calcination batching device, comprising a frame (1) and a motor (8), a reducer (9), and a first bearing support (10) mounted thereon, wherein a cylinder (3) is mounted on the frame (1) via a support frame (2), and a rotating shaft (11) is rotatably arranged inside the cylinder (3), one end of the rotating shaft (11) passes through the cylinder (3) and is mounted on the frame (1) via the first bearing support (10), and its end is connected to the output end of the reducer (9) via a coupling, the input end of the reducer (9) is connected to the output shaft of the motor (8) via a coupling, and an auger spiral blade (12) is provided on the rotating shaft (11), and a discharge port (7) is connected to the bottom of one end of the cylinder (3), characterized in that: A feeding hopper (4) is provided on the other end face of the cylinder (3) via a support frame (2). A bearing groove chamber (13) is provided on the feeding hopper (4), and a second bearing support (14) is provided inside it. The other end of the rotating shaft (11) is connected to the second bearing support (14). A first feed inlet (5) and a second feed inlet (6) are provided on the top of the feeding hopper (4), and both are connected to the raw material hopper via electric feed valves. The feeding hopper (4) ends located on both sides of the second bearing support (14) The surface is provided with discharge ports (15), and a pneumatic gate mechanism is provided on each discharge port (15). Two hoppers (25) are provided in the batching bin (4), and the two are located directly below the first feed port (5) and the second feed port (6), respectively. A weighing sensor (26) is provided below each of the hoppers (25). The weighing sensor (26) monitors the weight of the material in the hopper (25) in real time and uses the controller to control the electric material valve and the pneumatic gate mechanism to achieve accurate batching.

2. A calcium aluminate calcination batching device according to claim 1, characterized in that: A support plate (23) is provided inside the batching bin (4), the hopper (25) is set on the support plate (23) by means of a telescopic rod (24), and the weighing sensor (26) is installed on the support plate (23).

3. A calcium aluminate calcination batching device according to claim 1, characterized in that: A contact rod (27) is fixed at the bottom of the hopper (25), and the hopper (25) contacts the upper pressure plate of the weighing sensor (26) through the contact rod (27) to monitor the weight of the material in real time.

4. A calcium aluminate calcination arrangement according to any one of claims 1 to 3, characterized in that: The pneumatic gate mechanism includes a gate (17), a cylinder (19), and a matching power control system. The cylinder (19) is fixed on the batching bin (4) by a mounting base (18), and its piston rod end is connected to the gate (17). Tracks (16) are provided on both sides of each discharge port (15). The gate (17) is inserted between the two tracks (16). After receiving the signal from the weighing sensor (26) through the controller, the power control system uses a solenoid valve to control the extension and retraction of the cylinder (19) to drive the gate (17) to open and close and adjust the unloading amount.

5. A calcium aluminate calcination batching device according to claim 4, characterised in that: An arc-shaped sieve plate (21) is fixed in the batching bin (4) by a partition plate (20). Discharge ports (22) are provided on both sides of the batching bin (4). The discharge ports (22) are used to discharge materials with unqualified particle size after being screened by the arc-shaped sieve plate (21).

6. A calcium aluminate calcination batching device according to claim 5, characterised in that: A chute (28) is inclinedly arranged inside the batching bin (4). The chute (28) guides the material onto the arc-shaped screen plate (21) to prevent the material from being discharged directly from the discharge port (22).

7. A calcium aluminate calcination batching device according to claim 5 or 6, characterized in that: The discharge port (22) is connected to the support frame (2) via a connecting plate (29), and the connecting plate (29) is fixed to the frame (1) via a diagonal support (30).

Images