A stirring structure for a Mannheim furnace used in potassium sulfate production

Abstract

This application relates to a stirring structure for a Mannheim furnace used in potassium sulfate production, belonging to the field of potassium sulfate production equipment. It includes a long, narrow shell, paddles, and a control drive assembly. Several spaced-apart paddles are rotatably mounted below the shell. The control drive assembly includes a rotating shaft and a control component. The rotating shaft is fixedly connected to the shell, and the control component is used to adjust the angle of the paddles. This application significantly improves the practicality and production adaptability of the Mannheim furnace stirring structure through its adjustable angle, synchronous, and precise structural design.

Description

Technical Field

[0001] This application belongs to the field of potassium sulfate production equipment, specifically relating to a stirring structure for a Mannheim furnace used in potassium sulfate production. Background Technology

[0002] In the potassium sulfate production process, the Mannheim furnace is the core reaction equipment. Its internal stirring structure plays a crucial role in material mixing, heat and mass transfer, and preventing local overheating, which directly affects reaction efficiency, product purity, and equipment operation stability.

[0003] Currently, while the existing Mannheim furnace stirring structure can meet basic stirring requirements, the fixed angle of the paddles cannot be adjusted according to changes in the material state during production.

[0004] In potassium sulfate production, the physical properties of the material vary significantly as it progresses from a low-viscosity liquid state in the initial stage of the reaction, to a semi-solid mixed state in the middle stage, and finally to a high-viscosity crystalline state in the later stage. Furthermore, the amount of material and the reaction temperature may fluctuate between different batches. A fixed-angle paddle is insufficient to meet the demands of different operating conditions: for example, with high-viscosity materials, a fixed angle may result in insufficient stirring thrust, leading to material accumulation and incomplete localized reactions; while with low-viscosity materials, excessive resistance may increase energy consumption and even cause material splashing and adhesion to the furnace walls, severely impacting production continuity. Utility Model Content

[0005] The technical problem to be solved by this application is to overcome the shortcomings of the prior art and provide a Mannheim furnace stirring structure for the production of potassium sulfate. This application effectively solves the problems of poor adaptability, uneven stirring, low adjustment accuracy and difficult maintenance of the existing structure by means of an adjustable angle, synchronous and precise structural design, combined with a compact and stable transmission layout and convenient maintenance characteristics, which significantly improves the practicality and production adaptability of the Mannheim furnace stirring structure.

[0006] The technical solution adopted by this application to solve its existing problems is: A stirring structure for a Mannheim furnace used in the production of potassium sulfate includes an elongated shell, a paddle, and a control drive assembly.

[0007] Several spaced-apart paddles are rotatably mounted below the shell.

[0008] The control drive assembly includes a rotating shaft and a control component. The rotating shaft is fixedly connected to the housing, and the control component is used to adjust the angle of the paddle.

[0009] Furthermore, the control components include a rack, a sleeve, and a rotary drive device.

[0010] The top of the paddle is fixedly connected to a gear via a connecting shaft. The gear is located inside the housing, and the rack is slidably located inside the housing, meshing with all the gears.

[0011] The sleeve is fitted onto the rotating shaft, with the top of the sleeve extending into the interior of the housing and fixed with a gear ring, which meshes with a rack.

[0012] The rotary drive device is used to drive the sleeve to rotate relative to the shaft.

[0013] Furthermore, the rotary drive device includes a lifting mechanism, a collar, and a ball head fixedly connected to the inner side of the collar via a connecting rod.

[0014] The bottom of the sleeve is provided with a thickened tube, and the outside of the thickened tube is recessed with a curved groove arranged from bottom to top. The ball head is slidably disposed inside the curved groove.

[0015] The lifting mechanism drives the collar to move up and down.

[0016] Furthermore, the lifting mechanism includes a fixed plate, a screw, and a servo motor. The fixed plate is sleeved on the rotating shaft below the sleeve, the servo motor is fixedly connected to the fixed plate, and the vertically arranged screw is connected to the output end of the servo motor.

[0017] The collar is provided with a threaded hole, and the screw passes through the threaded hole and the two are threadedly connected.

[0018] Furthermore, a vertically arranged guide rod is fixed on the fixing plate, and the guide rod passes through the through hole on the collar.

[0019] Furthermore, two ball heads are fixed on the inner side of the collar and arranged symmetrically around its axis, and two curved grooves are recessed on the outer wall of the thickened tube.

[0020] Furthermore, the inner wall of the housing is provided with a protruding plate, and the end face of the rack is provided with a recessed groove, which is engaged with the protruding plate.

[0021] Compared with the prior art, the beneficial effects of this application are as follows: (1) The angle of the paddle can be flexibly adjusted by controlling the drive assembly. By changing the angle of action between the paddle and the material, the stirring effect can be optimized in a targeted manner, such as increasing the pushing force, reducing the resistance, and adjusting the tumbling amplitude, to match the process requirements of different stages in potassium sulfate production, thereby improving production stability and product quality.

[0022] (2) The rack meshes with the gears on the top of all the paddles. The synchronous sliding of the rack can drive all the gears and paddles to rotate synchronously, ensuring that all the paddles have the same angle. This synchronous adjustment feature can ensure that the materials in each area of ​​the furnace are uniformly stirred, avoid insufficient reaction or excessive stirring of local materials, and improve the overall mixing effect.

[0023] (3) A servo motor drives the screw, and the guide rod limits the movement of the collar. The number of rotations can be precisely controlled by the servo motor to achieve quantitative adjustment of the ball head's lifting height. The vertical motion is then converted into precise rotation of the sleeve via a curved slide, ultimately achieving precise control of the paddle angle. This precise adjustment capability can meet the refined requirements for stirring intensity in potassium sulfate production and improve process controllability. The bolt adjustment method can also achieve a self-locking function to prevent the ball head from slipping down.

[0024] (4) The rotating shaft is fixed to the housing, and the sleeve is coaxially fitted on the rotating shaft, so that the power links of stirring drive and angle adjustment are independent and tightly matched, avoiding motion interference. At the same time, the symmetrically arranged ball head and curved slide groove can balance the force, reduce unilateral wear, and improve the durability of the equipment; the rack and the housing convex plate are limited by the groove to ensure the stability of the sliding trajectory and further ensure the transmission efficiency.

[0025] (5) The shell adopts a design of splicing the upper and lower parts and fixing them with bolts. The shell can be quickly disassembled to directly expose the internal gears, racks, gear rings and other components, which facilitates daily maintenance, troubleshooting and parts replacement, and greatly reduces the difficulty and cost of operation and maintenance. Attached Figure Description

[0026] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a structural diagram of a Mannheim furnace stirring structure for producing potassium sulfate according to this application. Figure 2 This is a cross-sectional view of the stirring structure of a Mannheim furnace for producing potassium sulfate according to this application. Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle. Figure 4 This is a structural diagram of the stirring paddle in a Mannheim furnace stirring structure for potassium sulfate production according to this application. Figure 5 This is a diagram of the rack and pinion structure in the stirring mechanism of a Mannheim furnace for potassium sulfate production according to this application. Figure 6 This is a structural diagram of the control drive assembly in the stirring structure of a Mannheim furnace for potassium sulfate production according to this application. Figure 7 for Figure 6 sectional view, Figure 8 This is a structural diagram of the rotating shaft in the stirring structure of a Mannheim furnace for producing potassium sulfate according to this application. Figure 9 This is a diagram of the sleeve structure in the stirring structure of a Mannheim furnace for producing potassium sulfate according to this application. Figure 10 This is a diagram of the ring structure in the stirring structure of a Mannheim furnace for producing potassium sulfate according to this application.

[0028] In the diagram: 1-House, 101-Protruding plate, 2-Paddle plate, 201-Connecting shaft, 202-Gear, 3-Rack, 301-Groove, 4-Rotating shaft, 401-Bottom fixing flange, 402-Top fixing flange, 5-Sleeve, 501-Gear ring, 502-Thickened tube, 503-Curved slide, 6-Ball head, 601-Connecting rod, 7-Collar ring, 8-Fixing plate, 9-Screw, 10-Servo motor, 11-Guide rod. Detailed Implementation

[0029] The attached figure shows a preferred embodiment of the stirring structure of a Mannheim furnace for producing potassium sulfate. The following is a more detailed description of this application in conjunction with the attached figure.

[0030] Depend on Figures 1 to 10 As shown, a Mannheim furnace stirring structure for producing potassium sulfate includes a long strip-shaped shell 1, a paddle 2, and a control drive assembly.

[0031] The housing 1 is composed of two parts, upper and lower, which are fixedly connected by bolts.

[0032] Several spaced-apart paddles 2 are rotatably disposed below the housing 1. The paddles 2 are arc-shaped plates, and a gear 202 is fixedly connected to the top of the plate via a connecting shaft 201. The gear 202 is rotatably disposed inside the housing 1.

[0033] The control drive assembly includes a rotating shaft 4 and a control component. The rotating shaft 4 is fixedly connected to the housing 1, and the control component is used to adjust the angle of the paddle 2.

[0034] The control assembly includes a rack 3, a sleeve 5, and a rotary drive device; The rack 3 is slidably disposed inside the housing 1. In order to limit its movement and make it slide only along a predetermined path, in this embodiment, the inner wall of the housing 1 is provided with a protruding plate 101, and the end face of the rack 3 is provided with a recessed groove 301. The groove 301 is engaged with the protruding plate 101, and the rack 3 is meshed with all the gears 202 inside the housing 1.

[0035] The sleeve 5 is coaxially sleeved on the rotating shaft 4, and the top of the sleeve 5 passes through the inside of the housing 1 and is fixed with a toothed ring 501, which meshes with the rack 3.

[0036] The rotary drive device is used to drive the sleeve 5 to rotate relative to the rotating shaft 4.

[0037] To achieve a fixed connection between the rotating shaft 4 and the housing 1 without affecting the arrangement of the gear ring 501, in this embodiment, a top fixing flange 402 is provided at the top of the rotating shaft 4, extending above the outside of the housing 1. The top fixing flange 402 is fixedly connected to the top surface of the housing 1 by bolts. A bottom fixing flange 401 is provided at the bottom of the rotating shaft 4, and the bottom fixing flange 401 is connected to the output end of the drive device that drives the stirring structure of the Mannheim furnace by a coupling or bolts.

[0038] The rotary drive device includes a lifting mechanism, a collar 7, and a ball head 6 fixedly connected to the inner side of the collar 7 via a connecting rod 601.

[0039] The sleeve 5 has a thickened tube 502 at the bottom, and the thickened tube 502 has a curved groove 503 arranged from bottom to top on the outside. The ball head 6 is slidably disposed inside the curved groove 503.

[0040] The lifting mechanism drives the collar 7 to move up and down, thereby changing the height of the ball head 6. Since the ball head 6 slides inside the curved groove 503, the change in the height of the ball head 6 can cause the thickened tube 502, the sleeve 5, and the gear ring 501 to rotate relative to the rotating shaft 4. The rotation of the gear ring 501 causes the rack 3 to move, which in turn causes the gear 202 to rotate. The rotation of the gear 202 causes the propeller 2 to rotate, changing the angle of the propeller 2.

[0041] By changing the angle of the paddle 2, the stirring direction and effect of the material inside the Mannheim furnace can be changed, thus better matching different working conditions.

[0042] In order to optimize the driving effect of the ball head 6 on the thickened tube 502 when it moves, in this embodiment, two ball heads 6 are fixed inside the collar 7 and arranged symmetrically around its axis, and two curved grooves 503 are recessed on the outer wall of the thickened tube 502.

[0043] If a conventional lifting mechanism, such as an electric cylinder, electromagnet, or hydraulic cylinder, is used, the position of the ball head 6 cannot be precisely positioned, thus making it impossible to accurately adjust the rotation angle of the gear ring 501. To achieve precise adjustment of the rotation angles of the gear ring 501 and the paddle plate 2, in this embodiment, the lifting mechanism includes a fixed plate 8, a screw 9, and a servo motor 10. The fixed plate 8 is sleeved on the rotating shaft 4 below the sleeve 5, and the fixed plate 8 is fixedly connected to the rotating shaft 4. A rechargeable and replaceable battery module can be fixed on the fixed plate 8 to power the servo motor 10.

[0044] The servo motor 10 is fixedly connected to the fixed plate 8, and the vertically arranged screw 9 is connected to the output end of the servo motor 10.

[0045] The collar 7 has a threaded hole, through which the screw 9 passes and is threadedly connected. A vertically arranged guide rod 11 is fixed on the fixing plate 8, and the guide rod 11 passes through a through hole in the collar 7.

[0046] The servo motor 10 can precisely control the number of rotations, thus enabling precise adjustment of the height of the ball head 6.

[0047] During basic mixing: A drive device connected to the rotating shaft 4 via a bottom fixed flange 401 drives the rotating shaft 4 to rotate. Since the rotating shaft 4 is fixed to the housing 1 via a top fixed flange 402, the housing 1 rotates synchronously with the rotating shaft 4. The paddle 2 below the housing 1 rotates together with the housing 1, and stirs the potassium sulfate material in the Mannheim furnace through the arc-shaped plate structure, realizing the mixing and turning of the material.

[0048] Activate paddle angle adjustment as needed when it is necessary to adjust the stirring direction or effect to match the working conditions: Servo motor 10 starts, driving screw 9 to rotate. Because screw 9 engages with the threaded hole of collar 7, and collar 7 is limited by guide rod 11, it can only move up and down. Collar 7 moves vertically up and down along guide rod 11. Ball head 6 on the inner side of collar 7 moves up and down synchronously with collar 7, sliding within the curved groove 503 of thickened tube 502 at the bottom of sleeve 5. Because curved groove 503 is a curved structure arranged from bottom to top, the height change of ball head 6 forces thickened tube 502 and sleeve 5 to rotate relative to shaft 4. Gear ring 501 at the top of sleeve 5 rotates synchronously with sleeve 5, meshing with rack 3, causing rack 3 to slide horizontally along the protrusion 101 on the inner wall of housing 1 through groove 301.

[0049] The rack 3 meshes with the gears 202 on the top of all the paddles 2. The rack 3 slides, causing the gears 202 to rotate, which in turn drives the paddles 2 to rotate through the connecting shaft 201, thereby adjusting the angle of the paddles 2. The servo motor 10 precisely controls the number of rotations to achieve precise adjustment of the height of the ball head 6, ultimately completing the precise positioning of the angle of the paddles 2.

[0050] By adjusting the angle of paddle 2, the stirring direction and effect can be changed, making it suitable for the following different operating conditions in potassium sulfate production: When the viscosity of the material is high, such as in the middle and later stages of the reaction, the material tends to be solid or semi-solid: Adjust the angle of the paddle 2 so that its arc surface forms a large angle with the direction of rotation, close to perpendicular, to enhance the pushing and shearing force of the paddle on the material, avoid material accumulation, and ensure uniform mixing.

[0051] When the material viscosity is low, such as in the early stage of the reaction, the material is in a liquid or thin paste state: adjust the angle of the paddle 2 so that its arc surface forms a small angle with the direction of rotation, close to parallel, to reduce stirring resistance, avoid excessive splashing of material, and at the same time ensure a light mixing effect.

[0052] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A stirring structure for a Mannheim furnace used in the production of potassium sulfate, characterized in that: It includes a long, narrow housing (1), a paddle plate (2), and a control drive assembly; Several spaced-apart paddles (2) are rotatably positioned below the housing (1); The control drive assembly includes a rotating shaft (4) and a control component. The rotating shaft (4) is fixedly connected to the housing (1), and the control component is used to adjust the angle of the paddle (2).

2. The stirring structure of a Mannheim furnace for producing potassium sulfate according to claim 1, characterized in that: The control components include a rack (3), a sleeve (5), and a rotary drive device; The top of the paddle (2) is fixedly connected to a gear (202) via a connecting shaft (201). The gear (202) is located inside the housing (1). The rack (3) is slidably located inside the housing (1). The rack (3) meshes with all the gears (202). The sleeve (5) is sleeved on the rotating shaft (4), and the top of the sleeve (5) extends into the inside of the housing (1) and is fixed with a toothed ring (501). The toothed ring (501) meshes with the rack (3). The rotary drive device is used to drive the sleeve (5) to rotate relative to the shaft (4).

3. The stirring structure of a Mannheim furnace for producing potassium sulfate according to claim 2, characterized in that: The rotary drive device includes a lifting mechanism, a collar (7), and a ball head (6) fixedly connected to the inner side of the collar (7) by a connecting rod (601). The sleeve (5) is provided with a thickened tube (502) at the bottom, and the thickened tube (502) is provided with a curved groove (503) arranged from bottom to top on the outside. The ball head (6) is slidably disposed inside the curved groove (503). The lifting mechanism drives the collar (7) to move up and down.

4. The stirring structure of a Mannheim furnace for producing potassium sulfate according to claim 3, characterized in that: The lifting mechanism includes a fixed plate (8), a screw (9) and a servo motor (10). The fixed plate (8) is sleeved on the rotating shaft (4) below the sleeve (5). The servo motor (10) is fixedly connected to the fixed plate (8). The vertically arranged screw (9) is connected to the output end of the servo motor (10). The collar (7) is provided with a threaded hole, and the screw (9) passes through the threaded hole and the two are threadedly connected.

5. The stirring structure of a Mannheim furnace for producing potassium sulfate according to claim 4, characterized in that: A vertically arranged guide rod (11) is fixed on the fixing plate (8), and the guide rod (11) passes through the through hole on the collar (7).

6. The stirring structure of a Mannheim furnace for producing potassium sulfate according to claim 3, 4, or 5, characterized in that: The inner side of the collar (7) is fixed with two ball heads (6) arranged symmetrically around its axis, and the outer wall of the thickened tube (502) is provided with two curved grooves (503).

7. A Mannheim furnace stirring structure for producing potassium sulfate according to any one of claims 2 to 5, characterized in that: The inner wall of the housing (1) is provided with a protruding plate (101), and the end face of the rack (3) is provided with a recessed groove (301), which is engaged on the protruding plate (101).

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