Fluidized bed dryer for sodium sulfate

Abstract

The utility model relates to drying -machine technical field, concretely is sodium sulfate fluidized bed dryer, including bottom plate, machine body, vibration subassembly, guide mechanism and auxiliary mechanism, the machine body is connected with bottom plate through vibration subassembly, vibration subassembly includes T groove, T block, spring, connecting plate and bolt, T groove is set up on bottom plate, T block one end dips in T groove, T block other end is connected with spring one end, spring other end is connected with connecting plate, connecting plate is connected with machine body bottom through bolt, the guide mechanism includes guide post and guide block, guide block with machine body side connection, guide post bottom with bottom plate top connection, guide post other end passes through guide block, the guide mechanism is equipped with two, the utility model sodium sulfate fluidized bed dryer has solved the problem that the current equipment mixing effect is poorer.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, specifically to a sodium sulfate fluidized bed dryer. Background Technology

[0002] As is well known, the fluidized bed dryer for sodium sulfate (Na2SO4) is a device that uses fluidization technology to efficiently dry sodium sulfate particles, suitable for removing surface moisture or water of crystallization. Its core advantages are high drying efficiency, uniform heating of materials, and low energy consumption. It is especially suitable for processing powdered sodium sulfate with uniform particle size and is widely used in chemical, papermaking, and printing and dyeing industries.

[0003] However, most sodium sulfate fluidized bed dryers currently on the market use a single stirring mechanism for material mixing. This mechanism is usually a traditional paddle or anchor mixer. Due to the limited mixing range and lack of material vibration assistance, the mixing effect is poor. Specifically, the material tends to accumulate locally in the drying chamber, especially in the corners where there are mixing dead zones, resulting in low particle mixing uniformity (uniformity coefficient CV value > 15%). Furthermore, large particles and fine powders are significantly separated by gravity. To achieve the required mixing state, the mixing time needs to be extended to 40-60 minutes, which is 20-30 minutes longer than the ideal working condition. This not only significantly reduces production efficiency but also increases energy consumption by 15%-20%. This single stirring mode can no longer meet the high-volume and high-precision drying and mixing requirements. There is an urgent need to improve the material dispersion and mixing efficiency through structural improvements. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a fluidized bed dryer for sodium sulfate.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a fluidized bed dryer for sodium sulfate, comprising a base plate, a machine body, a vibration assembly, a guiding mechanism, and an auxiliary mechanism. The machine body is connected to the base plate via the vibration assembly. The vibration assembly includes a T-slot, a T-block, a spring, a connecting plate, and bolts. The T-slot is formed on the base plate. One end of the T-block extends into the T-slot, and the other end of the T-block is connected to one end of the spring. The other end of the spring is connected to the connecting plate. The connecting plate is connected to the bottom of the machine body via bolts. The guiding mechanism includes a guide post and a guide block. The guide block is connected to the side of the machine body, and the bottom of the guide post is connected to the top of the base plate. The other end of the guide post passes through the guide block. Two guiding mechanisms are provided. The auxiliary mechanism includes a sliding assembly and a hydraulic assembly. The sliding assembly is disposed on the top of the base plate, and the hydraulic assembly is disposed on the sliding assembly. Two auxiliary mechanisms are provided.

[0008] To facilitate operation of the equipment, the present invention is improved by providing a controller on the front of the base plate, the controller being electrically connected to the sliding component, the controller being electrically connected to the hydraulic component, and the controller being electrically connected to the machine body.

[0009] To improve stability, this utility model is improved by having two guide mechanisms arranged symmetrically.

[0010] To improve stability, this invention features an improvement where the two hydraulic components are arranged symmetrically.

[0011] To improve the connection effect, the present invention is improved by providing a plurality of bolts, and a washer is provided between each of the plurality of bolts and the connecting plate.

[0012] To improve the connection effect, the present invention is improved by welding the guide block to the body.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present invention provides a fluidized bed dryer for sodium sulfate, which has the following beneficial effects:

[0015] This sodium sulfate fluidized bed dryer significantly improves equipment performance through the coordinated design of vibration components, guiding mechanisms, and auxiliary mechanisms. The vibration components amplify the vibration of the machine body, and in conjunction with the symmetrical guiding mechanism, the materials are vibrated synchronously during mixing, improving the mixing uniformity to CV value ≤8%, which is 30% more efficient than traditional single-mixing equipment. The symmetrical hydraulic components and sliding components form an adjustable support system, which can accurately lift the machine body during maintenance (synchronous error ≤1mm), reducing the replacement time of the vibration components to less than 10 minutes. The combination of bolts and gaskets enhances structural reliability, and the welded guide blocks ensure that the verticality tolerance of the vibration trajectory is ≤0.5mm / m. The overall design not only strengthens material mixing through vibration but also enables convenient maintenance through a modular structure, solving the problems of uneven mixing and time-consuming maintenance in traditional equipment. This improves drying efficiency while reducing energy consumption by 15%-20%. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the axial structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the axonal structure of the present invention;

[0019] Figure 4 This utility model Figure 3 A magnified schematic diagram of the partial structure at point A in the middle;

[0020] In the diagram: 1. Base plate; 2. Body; 3. Vibration assembly; 4. T-slot; 5. T-block; 6. Spring; 7. Connecting plate; 8. Bolt; 9. Guide mechanism; 10. Guide column; 11. Guide block; 12. Auxiliary mechanism; 13. Sliding assembly; 14. Hydraulic assembly; 15. Controller. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4A fluidized bed dryer for sodium sulfate includes a base plate 1, a machine body 2, a vibration assembly 3, a guiding mechanism 9, and an auxiliary mechanism 12. The machine body 2 is connected to the base plate 1 via the vibration assembly 3. The vibration assembly 3 includes a T-slot 4, a T-block 5, a spring 6, a connecting plate 7, and bolts 8. The T-slot 4 is formed on the base plate 1. One end of the T-block 5 extends into the T-slot 4, and the other end of the T-block 5 is connected to one end of the spring 6. The other end of the spring 6 is connected to the connecting plate 7, and the connecting plate 7 is connected to the bolts 8. 8 is connected to the bottom of the body 2. The guide mechanism 9 includes a guide post 10 and a guide block 11. The guide block 11 is connected to the side of the body 2. The bottom of the guide post 10 is connected to the top of the base plate 1. The other end of the guide post 10 passes through the guide block 11. There are two guide mechanisms 9. The auxiliary mechanism 12 includes a sliding component 13 and a hydraulic component 14. The sliding component 13 is disposed on the top of the base plate 1. The hydraulic component 14 is disposed on the sliding component 13. There are two auxiliary mechanisms 12.

[0023] Working principle: The equipment is placed on a level ground and supported by a base plate 1. It is powered by a three-phase five-wire mains power supply (380V / 50Hz). The machine body 2 adopts a horizontal fluidized bed drying structure, which includes a drying chamber, a stirring assembly (paddle speed 15-30r / min), a screw feed assembly (conveying capacity 0-50kg / h), a star discharge valve (speed 10r / min), an exhaust port (equipped with a 90℃ waste heat recovery device), and an electric heating mechanism (power 30-60kW). All components are controlled by a PLC.

[0024] Vibration-enhanced hybrid stage

[0025] When the heating element inside the machine body 2 heats up to the set temperature (e.g., 80-120℃) and the stirring assembly is started, the machine body generates initial vibration due to the eccentric load of the stirring. The bottom vibration assembly 3 slides laterally in the T-slot 4 through the T-block 5, and with the elastic deformation of the spring 6 (compression amount 5-10mm), the initial vibration is amplified into a vertical reciprocating motion with an amplitude of 2-5mm. The guide block 11 of the guide mechanism 9 slides up and down along the guide column 10 (fitting gap 0.1-0.3mm) to ensure that the vibration trajectory of the machine body is vertically stable and avoids lateral deviation. At this time, the sodium sulfate particles in the drying box form a "boiling" fluidized mixture under the synergistic effect of the stirring paddle shear force (linear velocity 4-6m / s) and the machine body vibration projection force (acceleration 1-2g). Compared with the traditional stirring method, the mixing uniformity (CV value) is reduced from 15% to below 8%.

[0026] Drying and Discharging Stage

[0027] Hot air, heated by the heating mechanism, is evenly introduced through the air distribution plate (2.5% opening rate) at the bottom of the drying chamber, where it undergoes convective heat exchange with the fluidized sodium sulfate particles. The moisture evaporation rate reaches 0.5-1.2 kg / (m³). 2 After drying (·h), the discharge assembly is activated, and the star-shaped discharge valve discharges the material into the receiving equipment below in intermittent mode (open for 30s / close for 60s). The hot and humid air discharged from the exhaust port is filtered by a cyclone dust collector and a bag filter (efficiency 99.5%) to meet emission standards (dust concentration ≤30mg / m³). 3 );

[0028] Vibration component replacement process

[0029] Ensure the equipment is stopped. Use a multimeter to test the grounding resistance of the machine casing (it should be ≤4Ω). Control the motor (power 0.75kW) of the sliding component 13 to a low speed (10Hz) to drive the slider in the slide groove to move along the X-axis, so that the two sets of hydraulic components 14 are accurately positioned directly below the guide block 11 (positioning error ≤2mm).

[0030] Start the hydraulic pump station (working pressure 6-8MPa), and the piston rod rises slowly at a speed of 5mm / s. When the support platform of the hydraulic component 14 contacts the bottom surface of the guide block 11, stop the lifting and maintain pressure (pressure fluctuation ≤0.3MPa). At this time, the preload of the spring 6 is replaced by the hydraulic support. Use a feeler gauge to check the gap between the connecting plate 7 and the base plate 1 (it should be ≥15mm to ensure wrench operating space).

[0031] Using a 17mm open-end wrench, loosen the bolt (8) in 2-3 steps in a diagonal sequence (initial torque 30-35 N·m). After removing the bolt, slowly adjust the lifting amount of the hydraulic component 14 (5mm each time) until the machine body 2 is completely separated from the connecting plate 7. Push the T-block 5 laterally along the T-slot 4 (it needs to overcome the residual spring force of about 50-80 N) to make it slide out of the slot. Remove the vibration component 3 as a whole. When replacing the new component, check the fit tolerance between the T-block 5 and the T-slot 4 (gap 0.5-0.8mm), the free length of the spring 6 (should meet the drawing requirements ±1mm), and apply molybdenum disulfide grease (the amount applied is 1 / 3 of the contact surface).

[0032] Then, simply reverse the steps described above to complete the installation. Those skilled in the art will know the installation steps, so they will not be described in detail here. New parts can be purchased from the manufacturer, and they will not be described in detail here either.

[0033] To facilitate equipment operation, a controller 15 is installed on the front of the base plate 1 in this embodiment. The controller 15 is electrically connected to the sliding component 13 via a cable, which can control the operation of its motor and drive the slider to move in the slide groove; it is also electrically connected to the hydraulic component 14, which can control the lifting and lowering of the hydraulic rod; and it is also electrically connected to the machine body 2, which can control the heating, stirring and other mechanisms inside the machine body. The controller 15 integrates operation buttons and a display screen, which can be used by the operator to set parameters and monitor the operating status of the equipment, making the operation of the equipment more convenient and efficient.

[0034] To improve the stability of equipment operation, two sets of guide mechanisms 9 are symmetrically arranged on both sides of the machine body 2 in this embodiment. Each set of guide mechanisms 9 consists of a guide column 10 and a guide block 11. The guide column 10 is vertically fixed to the top surface of the base plate 1, and the guide block 11 is welded to the side of the machine body 2 and sleeved on the guide column 10. This symmetrical layout can evenly bear the lateral force generated by the vibration of the machine body, avoid the equipment from shifting or tilting, and ensure that the verticality tolerance of the machine body 2 when vibrating up and down along the guide column 10 does not exceed 0.5mm / m. At the same time, it keeps the force deviation of the springs 6 on both sides within 10%, effectively improving the overall stability of the equipment operation.

[0035] To improve the operational stability of the equipment, two sets of hydraulic components 14 are symmetrically arranged on the top of the base plate 1 in this embodiment. Each set of hydraulic components 14 includes a hydraulic cylinder and a piston rod, and is installed on the base plate 1 through a sliding component 13. The two sets of hydraulic components are symmetrically distributed on the left and right with the central axis of the machine body 2 as the reference. This symmetrical layout can evenly support the weight of the machine body 2, avoid the risk of tilting caused by unilateral force, and ensure that the synchronous error of the rising of the two sides of the machine body during hydraulic lifting does not exceed 1mm. At the same time, it makes the sliders on both sides of the sliding component 13 evenly stressed, reduces the difference in guide rail wear, and extends the overall service life of the equipment. When the equipment is vibrating, the symmetrically arranged hydraulic components can also buffer the vibration of the machine body through the damping effect of hydraulic oil, further improving the operational stability.

[0036] To improve the connection effect, in this embodiment, several bolts 8 are set between the connecting plate 7 and the bottom of the body 2. Each bolt 8 is fitted with a washer on the contact surface with the connecting plate 7. The washer is made of 304 stainless steel with a thickness of 1-2 mm and the surface is galvanized to prevent corrosion. The bolts are evenly distributed in a ring. The tightening force of the bolts tightly connects the connecting plate and the bottom of the body. The washer can increase the contact area, disperse the preload of the bolts, avoid local deformation of the connecting plate, and prevent the connecting plate surface from being scratched when the bolts are tightened, thus ensuring the reliability and stability of the connection.

[0037] To improve connection strength and reliability, in this embodiment, the guide block 11 and the body 2 are fixedly connected by welding. Before welding, the surfaces of the guide block 11 and the body 2 to be welded are treated to remove rust and oil to ensure that the welding surface is clean and free of impurities. Argon arc welding is used, and stainless steel welding wire that matches the material of the body is used. During welding, the welding current is controlled at 80-120A and the welding speed is 8-12cm / min to ensure that the weld is uniform and continuous. After welding, dye penetrant testing is performed to ensure that there are no welding defects such as porosity and cracks. This welded structure can withstand a lateral force of not less than 500N, so that the guide block 11 and the body 2 form a solid whole, effectively ensuring the stability and reliability of the guiding mechanism and avoiding the impact of loose connection on the normal operation of the equipment.

[0038] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fluidized bed dryer for sodium sulfate, comprising a base plate (1), a machine body (2), a vibration assembly (3), a guide mechanism (9) and an auxiliary mechanism (12), characterized in that: The body (2) is connected to the base plate (1) via the vibration assembly (3). The vibration assembly (3) includes a T-slot (4), a T-block (5), a spring (6), a connecting plate (7), and bolts (8). The T-slot (4) is formed on the base plate (1). One end of the T-block (5) extends into the T-slot (4), and the other end of the T-block (5) is connected to one end of the spring (6). The other end of the spring (6) is connected to the connecting plate (7). The connecting plate (7) is connected to the bottom of the body (2) via bolts (8). The guide mechanism... (9) includes a guide post (10) and a guide block (11). The guide block (11) is connected to the side of the body (2). The bottom of the guide post (10) is connected to the top of the base plate (1). The other end of the guide post (10) passes through the guide block (11). There are two guide mechanisms (9). The auxiliary mechanism (12) includes a sliding component (13) and a hydraulic component (14). The sliding component (13) is located on the top of the base plate (1). The hydraulic component (14) is located on the sliding component (13). There are two auxiliary mechanisms (12).

2. The sodium sulfate flowing bed dryer according to claim 1, characterized in that: The base plate (1) has a controller (15) on its front side. The controller (15) is electrically connected to the sliding component (13), the controller (15) is electrically connected to the hydraulic component (14), and the controller (15) is electrically connected to the machine body (2).

3. The sodium sulfate flowing bed dryer according to claim 2, characterized in that: The two guide mechanisms (9) are symmetrically arranged.

4. The sodium sulfate flowing bed dryer according to claim 3, characterized in that: The two hydraulic components (14) are arranged symmetrically.

5. The sodium sulfate flowing bed dryer according to claim 4, characterized in that: The bolts (8) are provided in a plurality of units, and a washer is provided between each of the bolts (8) and the connecting plate (7).

6. The sodium sulfate flowing bed dryer according to claim 5, characterized in that: The guide block (11) is welded to the body (2).

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