Electric heating roller heating kiln for magnesium sulfate production

Abstract

The utility model provides an electric heating roller heating kiln for magnesium sulfate production, and relates to the technical field of heating kilns. The heating kiln comprises a roller, the roller comprises a roller body and at least one set of partition pieces, each partition piece comprises a plurality of partition plates, and the partition plates are evenly distributed in the roller body in a radial shape to form a plurality of fan-shaped spaces; the roller is connected with the power part, and the power part is used for driving the roller to rotate; the electric heating assembly comprises a plurality of electric heaters, and the plurality of electric heaters are uniformly arranged outside the roller body; the temperature sensor is arranged on the outer wall of the roller body; the silicon controlled rectifier controller is in communication connection with the temperature sensor and the electric heating assembly, the temperature sensor is used for sending a temperature signal to the silicon controlled rectifier controller, and the silicon controlled rectifier controller is used for controlling the electric heating assembly based on the temperature signal. The separator can improve the heating uniformity and increase the filling rate, and the accurate control of the heating temperature can be realized through the silicon controlled rectifier controller.

Description

Technical Field

[0001] This utility model relates to the field of heating kiln technology, and in particular to an electric heating drum kiln for magnesium sulfate production. Background Technology

[0002] In the production of magnesium sulfate, the performance of the heating equipment has a significant impact on product quality and production efficiency. Currently, traditional heating kilns suffer from problems such as uneven heating, low filling rates, and inaccurate temperature control, resulting in low production efficiency and unstable product quality in magnesium sulfate production. Utility Model Content

[0003] To address the technical problems of uneven heating, low filling rate, and inaccurate temperature control in existing technologies, this utility model provides an electrically heated drum kiln for magnesium sulfate production. The technical solution is as follows:

[0004] An electrically heated drum kiln for magnesium sulfate production is provided, the kiln comprising:

[0005] A roller, the roller including a roller body and at least one set of partitions, the partitions including multiple baffles, the multiple baffles being radially distributed in the roller body to form multiple fan-shaped spaces;

[0006] A power component is provided, wherein the roller is connected to the power component, and the power component is used to drive the roller to rotate;

[0007] An electric heating assembly, comprising a plurality of electric heaters, wherein the plurality of electric heaters are evenly disposed outside the drum body;

[0008] A temperature sensor is disposed on the outer wall of the roller body;

[0009] A thyristor controller is provided, which is communicatively connected to the temperature sensor and the electric heating component, respectively. The temperature sensor is used to send a temperature signal to the thyristor controller, and the thyristor controller is used to control the electric heating component based on the temperature signal.

[0010] Optionally, multiple sets of separators are evenly distributed along the axial direction of the roller, and there is a preset distance between two adjacent sets of separators.

[0011] Optionally, the two partitions in opposite positions of two adjacent sets of partitions are staggered.

[0012] Optionally, the connection between the separator and the roller body is fixed by welding.

[0013] Optionally, the electric heating assembly further includes a heat-insulating cover disposed outside the drum body.

[0014] Optionally, the thyristor controller includes a thyristor and a regulator. The regulator is communicatively connected to the temperature sensor and the thyristor, respectively, and the thyristor is electrically connected to the electric heating component. The regulator is used to control the thyristor based on the temperature signal, and the thyristor is used to control the current of the electric heating component.

[0015] Optionally, the thyristor controller further includes a temperature protection module, which is electrically connected to the thyristor and is used to control the thyristor to shut down the electric heating component when the temperature inside the drum exceeds a preset temperature threshold.

[0016] Optionally, the temperature sensor is a plurality of thermocouples, which are evenly distributed on the outer wall of the drum body.

[0017] Optionally, the power of the electric heating component is 900 kW.

[0018] Optionally, both the roller body and the separator are made of heat-resistant stainless steel 310S.

[0019] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:

[0020] This utility model provides an electrically heated drum kiln for magnesium sulfate production. By incorporating at least one set of partitions within the drum body, it increases the heating area of ​​the magnesium sulfate material and optimizes heating efficiency. This structural design allows the material to tumble fully within the drum, improving heating uniformity and increasing the filling rate, thus enhancing production efficiency. Furthermore, a silicon controlled rectifier (SCR) controller allows for real-time adjustment of the power output of the electric heating components, enabling precise temperature control and reducing human error. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an electrically heated drum kiln for magnesium sulfate production provided in this embodiment of the present invention;

[0023] Figure 2 This is a partial structural schematic diagram of an electrically heated drum kiln for magnesium sulfate production provided by an embodiment of this utility model;

[0024] Figure 3 yes Figure 2 Cross-sectional view at point B.

[0025] Figure label:

[0026] 1. Roller; 11. Roller body; 12. Divider;

[0027] 2. Power components; 21. Motor; 22. Transmission device;

[0028] 3. Electric heating assembly; 31. Electric heater; 32. Insulation cover; 33. Support frame;

[0029] 4. Support rollers;

[0030] 5. Feed inlet;

[0031] 6. Discharge port. Detailed Implementation

[0032] The technical solution of this utility model will now be described with reference to the accompanying drawings.

[0033] In the embodiments of this utility model, words such as "exemplarily" and "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in this utility model should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in the embodiments of this utility model, the meaning expressed by "and / or" can be both, or it can be either one or the other.

[0034] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0035] This utility model embodiment provides an electrically heated drum kiln for magnesium sulfate production. Figure 1 This is a schematic diagram of the structure of an electrically heated drum kiln for magnesium sulfate production provided in this embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of an electrically heated drum kiln for magnesium sulfate production provided in an embodiment of this utility model. Please refer to [link / reference]. Figure 1 and Figure 2 The heating kiln includes: a drum 1, a power unit 2, an electric heating assembly 3, a temperature sensor, and a silicon controlled rectifier (SCR) controller. Drum 1 holds the material used for magnesium sulfate production. The power unit 2 drives drum 1 to rotate. The electric heating assembly 3 heats drum 1, and the temperature sensor detects the temperature of drum 1. The temperature of drum 1 can then be controlled by adjusting the electric heating assembly via the SCR controller.

[0036] For details, please see Figure 3 The drum 1 includes a drum body 11 and at least one set of partitions 12. Each partition 12 includes multiple baffles radially distributed within the drum body 11, forming multiple fan-shaped spaces for accommodating materials. The drum body 11 conducts heat to the baffles, allowing each baffle to also heat the magnesium sulfate material, increasing the heating area and optimizing heating efficiency. This structural design allows the material to tumble fully within the drum 1, improving heating uniformity and ensuring even heating of the magnesium sulfate. This structure avoids the problem of material piling up and insufficient heating of material in the middle, allowing for a larger material filling in the drum 1. Therefore, this heating kiln structure increases the filling rate within the drum 1, improving production efficiency. Of course, the number of baffles can be set as needed; for example, three baffles can form three fan-shaped spaces.

[0037] The drum 1 is connected to the power component 2, which drives the drum 1 to rotate. The rotation of the drum 1 helps to mix and tumble the material evenly during the heating process, further improving the heating effect and product quality.

[0038] The electric heating assembly 3 includes multiple electric heaters 31, which are evenly arranged outside the drum body 11. The electric heating assembly 3 serves as a heat source, providing the necessary thermal energy to heat the material inside the drum 1.

[0039] A temperature sensor is installed on the outer wall of the drum body 11 to monitor the temperature inside the drum 1 in real time. This design ensures precise control of the heating temperature and prevents overheating or overcooling.

[0040] The thyristor controller is communicatively connected to the temperature sensor and the electric heating component 3, respectively. The temperature sensor is used to send temperature signals to the thyristor controller, which is used to control the electric heating component 3 based on the temperature signals and adjust the power output of the electric heating component 3 in real time, thereby achieving precise control of the heating temperature and reducing errors caused by human operation.

[0041] The electrically heated drum kiln for magnesium sulfate production provided by this utility model increases the heating area of ​​magnesium sulfate material and optimizes heating efficiency by setting at least one set of partitions 12 inside the drum body 11. This structural design allows the material to tumble fully inside the drum 1, improving heating uniformity and increasing the filling rate inside the drum 1, thus improving production efficiency. The power output of the electric heating component 3 can also be adjusted in real time via a silicon controlled rectifier (SCR) controller, thereby achieving precise control of the heating temperature and reducing human error.

[0042] It should be noted that the power component 2 of the electric heating drum kiln includes a motor 21 and a transmission device 22. The motor 21 drives the drum body 11 to rotate through the transmission device 22. Supporting rollers 4 are provided at both ends of the drum body 11 to support the drum body 11 and allow the drum body 11 to rotate.

[0043] In one embodiment of this utility model, the roller 1 has a preset slope with the horizontal plane; the roller body 11 has an inlet 5 at one higher end and an outlet 6 at the other end.

[0044] In one embodiment of this utility model, ventilation pipes are provided at both the inlet and outlet of the roller 1.

[0045] The aforementioned electric heater 31 can be a resistance strip, which is typically made of alloy materials (such as HRE, 0Cr27Al7Mo2, 0Cr21Al6Nb, 0Cr25Al5, etc.) or conductive ceramic materials. It is a slender metal strip material with high temperature resistance, capable of stable operation in high-temperature environments, and able to heat up rapidly to reach the required operating temperature. The resistance strip is evenly distributed along the axial direction of the drum body 11 and circumferentially within the cross-section, ensuring uniform heating within the drum body 11.

[0046] In one embodiment of this utility model, multiple sets of separators 12 are evenly distributed along the axial direction of the roller 1. That is to say, the structure of the inner cavity of the roller body is not integral, but modular, which facilitates production and processing, and also makes it easy to adjust the number and position of the separators 12, thus providing high flexibility.

[0047] Furthermore, in one embodiment of this invention, there is a preset distance between two adjacent sets of separators 12. That is, gaps are formed between adjacent separators 12. Since the material moves gradually along the axial direction of the drum 1, as the drum 1 rotates, the material flows between adjacent separators 12 and exchanges positions between the various sector spaces, ensuring the uniformity of overall heating. For example, a piece of material in the first sector space of the first set of separators 12, after axial movement, can fall into the second sector space of the second set of separators 12, instead of remaining in the first sector space. This structure can further improve the uniformity of heating.

[0048] The rotation of drum 1 and the presence of multiple sets of separators 12 promote the tumbling and mixing of materials inside drum 1. This mixing not only facilitates heat exchange between magnesium sulfate particles but also improves heating efficiency and ensures product quality.

[0049] Furthermore, in one embodiment of this invention, the two partitions in opposite positions between two adjacent sets of partitions 12 are staggered. For example, for the aforementioned adjacent partitions 12, the second partition of the second set of partitions 12 corresponds to the space between the first and second partitions of the first set of partitions 12. This structure further increases the probability of material exchanging positions between the various sector spaces when flowing between adjacent partitions 12, thereby further improving the overall heating uniformity.

[0050] In any of the embodiments provided by this utility model, the connection between the separator 12 and the drum body 11 is fixed by welding. Welding provides a very strong bonding force, ensuring a firm connection between the separator 12 and the drum body 11. This connection method can withstand various forces and vibrations generated during the rotation of the drum 1, ensuring the long-term stable operation of the drum 1. Furthermore, the weld seam also has good thermal conductivity, allowing the heat from the drum body 11 to be quickly transferred to the separator 12, ensuring the effective heating of the material by the separator 12.

[0051] In any of the above embodiments provided by this utility model, the electric heating component 3 further includes: a heat preservation cover 32, which is disposed outside the drum body 11 to maintain a stable temperature inside the drum body 11 and save energy.

[0052] Furthermore, a support frame 33 can be set to support the thermal insulation cover 32 to improve its stability.

[0053] In one embodiment of this utility model, the thyristor controller includes a thyristor and a regulator. The regulator is communicatively connected to the temperature sensor and the thyristor, and the thyristor is electrically connected to the electric heating component 3. The regulator is used to control the thyristor based on the temperature signal, and the thyristor is used to control the current of the electric heating component 3.

[0054] Specifically, a silicon controlled rectifier (SCR) is a semiconductor device that allows the regulation of current by controlling its on and off states. A SCR has a three-terminal structure: an anode, a cathode, and a gate. When the gate receives a trigger signal, the SCR transitions from the off state to the on state, allowing current to flow from the anode to the cathode.

[0055] In this embodiment, the regulator receives signals from the temperature sensor and generates corresponding trigger signals to control the thyristor based on these signals. The regulator typically has intelligent PID control functionality or is used in conjunction with other intelligent devices (such as a PLC) to achieve more precise temperature control. By setting appropriate temperature sensors and control algorithms, precise control of the heating kiln temperature can be achieved, ensuring that magnesium sulfate undergoes the heating reaction at the optimal temperature.

[0056] Furthermore, in one embodiment of this invention, the thyristor controller further includes a temperature protection module, which is electrically connected to the thyristor and used to control the thyristor to shut down the electric heating component 3 when the temperature inside the drum 1 exceeds a preset temperature threshold. The preset temperature threshold can be determined based on the properties of the material inside the drum 1, the requirements of the heating process, and the safety standards of the equipment. When the monitored temperature exceeds the preset threshold, the temperature protection module will trigger a protection action to prevent overheating of the material.

[0057] In one embodiment of this utility model, the temperature sensor is a plurality of thermocouples, which are evenly distributed on the outer wall of the drum body 11.

[0058] A thermocouple is a temperature sensor that operates based on the thermoelectric effect. It converts temperature differences into potential differences, and then calculates the temperature value by measuring these potential differences. Because thermocouples have advantages such as a wide measurement range, fast response speed, high accuracy, and stable operation in harsh environments, they are widely used in industrial temperature measurement.

[0059] The deployment of multiple thermocouples allows for the capture of temperature differences across different parts of roller 1, avoiding errors caused by single-point measurements. This deployment method ensures that the temperature of all parts of roller 1 can be effectively monitored, thereby improving the accuracy and uniformity of temperature control. Subsequent processing of the measurement results from multiple thermocouples using methods such as averaging or weighted averaging can further enhance the accuracy of temperature measurement.

[0060] In one embodiment of this invention, a temperature display module is further included. The temperature display module is communicatively connected to a temperature sensor and is used to display the temperature information inside the drum 1 in real time. In another embodiment of this invention, the electric heating component 3 has a power of 900 kW. The 900 kW power means that the electric heating component 3 can generate a large amount of heat in a short time, thereby rapidly increasing the temperature inside the drum 1, facilitating rapid start-up or rapid heating, and improving production efficiency.

[0061] In one embodiment of this utility model, both the roller body 11 and the separator 12 are made of heat-resistant stainless steel 310S. 310S stainless steel maintains high strength and toughness even at high temperatures, and can withstand the thermal and mechanical stresses generated during the heating process of the roller 1. The roller body 11 is made of a high-temperature resistant and corrosion-resistant material to ensure that it will not be damaged during long-term use.

[0062] Furthermore, after installation, the heating kiln undergoes trial operation and debugging to ensure that all performance indicators meet design requirements. Temperature control accuracy, filling rate, and heating area are tested and optimized to ensure the equipment reaches its optimal operating condition.

[0063] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0064] In this invention, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0065] It should be understood that in the various embodiments of this utility model, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this utility model.

[0066] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An electrically heated drum kiln for magnesium sulfate production, characterized in that, The heating kiln includes: A roller, the roller including a roller body and at least one set of partitions, the partitions including multiple baffles, the multiple baffles being radially distributed in the roller body to form multiple fan-shaped spaces; A power component is provided, wherein the roller is connected to the power component, and the power component is used to drive the roller to rotate; An electric heating assembly, comprising a plurality of electric heaters, wherein the plurality of electric heaters are evenly disposed outside the drum body; A temperature sensor is disposed on the outer wall of the roller body; A thyristor controller is provided, which is communicatively connected to the temperature sensor and the electric heating component, respectively. The temperature sensor is used to send a temperature signal to the thyristor controller, and the thyristor controller is used to control the electric heating component based on the temperature signal.

2. The electrically heated drum kiln for magnesium sulfate production according to claim 1, characterized in that, Multiple sets of separators are evenly distributed along the axial direction of the roller, and there is a preset distance between adjacent sets of separators.

3. The electrically heated drum kiln for magnesium sulfate production according to claim 2, characterized in that, Between two adjacent sets of partitions, the two partitions in opposite positions are staggered.

4. The electrically heated drum kiln for magnesium sulfate production according to any one of claims 1 to 3, characterized in that, The separator is fixed to the roller body by welding.

5. The electrically heated drum kiln for magnesium sulfate production according to claim 1, characterized in that, The electric heating assembly further includes a heat-insulating cover, which is disposed outside the drum body.

6. The electrically heated drum kiln for magnesium sulfate production according to claim 1, characterized in that, The thyristor controller includes a thyristor and a regulator. The regulator is communicatively connected to the temperature sensor and the thyristor, and the thyristor is electrically connected to the electric heating component. The regulator is used to control the thyristor based on the temperature signal, and the thyristor is used to control the current of the electric heating component.

7. The electrically heated drum kiln for magnesium sulfate production according to claim 6, characterized in that, The thyristor controller also includes a temperature protection module, which is electrically connected to the thyristor and is used to control the thyristor to shut down the electric heating component when the temperature inside the drum exceeds a preset temperature threshold.

8. The electrically heated drum kiln for magnesium sulfate production according to claim 1, characterized in that, The temperature sensor consists of multiple thermocouples, which are evenly distributed on the outer wall of the drum body.

9. The electrically heated drum kiln for magnesium sulfate production according to claim 1, characterized in that, The power of the electric heating component is 900 kW.

10. The electrically heated drum kiln for magnesium sulfate production according to claim 1, characterized in that, Both the roller body and the separator are made of heat-resistant stainless steel 310S.

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