An alkali production system
By integrating an automatic control system that includes a vacuum separator, a rotary drum filter, an alkali tank, and an electromagnetic regulating valve, the problem of manual operation for valve adjustment in the alkali production system has been solved. This achieves automated control, shortens turnaround time, reduces employee workload, and improves production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA LANTAI IND
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-12
AI Technical Summary
In the existing alkali production system, valve adjustment requires manual operation, resulting in long turnaround times and a heavy workload for employees. Furthermore, the DCS system cannot achieve remote control.
By integrating a vacuum separator, a rotary drum alkali filter, an alkali tank, an electromagnetic regulating valve, and a sensor assembly with a controller, automatic valve control is achieved. The sensors detect the alkali inlet flow rate, liquid level, pressure, temperature, and filter cake thickness, and adjust the opening of the electromagnetic valve and the rotation speed of the rotary drum alkali filter accordingly.
It enables automatic valve control, shortens switchover time, reduces employee workload, and improves production efficiency and equipment stability.
Smart Images
Figure CN224345540U_ABST
Abstract
Description
Technical fields:
[0001] This utility model relates to the field of alkali production technology, and in particular to an alkali production system. Background technology:
[0002] The main task of the filtration process in soda ash production is to separate the carbonation extract liquid into solids and liquids using a rotary drum filter. After a certain period of operation, the filter cloth and vacuum tube inside the filter drum of the rotary drum filter need to be cleaned to restore its working capacity.
[0003] The entire process of switching the rotary drum filter and adjusting the drive motor speed of the rotary drum filter requires manual on-site operation. Since the switching process is carried out under constant upstream production load, the switching time must be short. Because the daily switching of the rotary drum filter is entirely manual, involving numerous valves and long distances, the switching process is time-consuming and results in significant production fluctuations. Currently, although the alkali production system is equipped with a DCS system, its function is limited to process monitoring and remote operation is not possible. The adjustment of numerous valves still requires manual operation, leading to a heavy workload for employees. Utility model content:
[0004] The purpose of this invention is to provide an alkali production system that achieves automatic valve control, eliminating the need for manual operation, shortening the switching time, and reducing the workload of employees.
[0005] This utility model is implemented by the following technical solution: an alkali production system, characterized in that it includes:
[0006] Vacuum separator, rotary drum alkali filter, alkali tank, alkali inlet solenoid regulating valve, vacuum solenoid regulating valve, cold air solenoid regulating valve, soft water solenoid regulating valve, sensor assembly and controller;
[0007] The alkali inlet electromagnetic regulating valve, vacuum electromagnetic regulating valve, cold air electromagnetic regulating valve, soft water electromagnetic regulating valve, and sensor assembly are all electrically connected to the controller; the vacuum separator is connected to the rotary drum alkali filter via piping; a mother liquor valve is installed on the drain pipe at the bottom of the vacuum separator; at least two fixed supports and at least two pressure rollers are installed in the alkali tank, with the fixed supports located at the bottom of the alkali tank; the pressure rollers are located on the fixed supports, and the fixed supports are rotatably connected to the pressure rollers; the fixed supports are fixedly connected to the rotary drum alkali filter, and the pressure rollers are movably connected to the rotary drum alkali filter; the sensor assembly includes a flow sensor, a pressure sensor, and a pressure sensor. Sensors include a temperature sensor, a liquid level sensor, and a thickness sensor; the flow sensor is located inside the alkali inlet pipe, the pressure sensor is located inside the vacuum separator, the temperature sensor is located inside the washing water pipe, the liquid level sensor is located inside the alkali tank, and the thickness sensor is located on the drum of the rotary drum alkali filter; the alkali inlet electromagnetic regulating valve is located on the feed pipe of the rotary drum alkali filter, the vacuum electromagnetic regulating valve is located on the exhaust pipe of the vacuum separator, the cold air electromagnetic regulating valve is located on the air inlet pipe of the rotary drum alkali filter, and the soft water electromagnetic regulating valve is located on the washing water pipe, with the soft water electromagnetic regulating valve close to the rotary drum alkali filter;
[0008] The controller is used to adjust the opening of the alkali inlet solenoid valve according to the alkali inlet flow rate detected by the flow sensor; the controller is also used to adjust the opening or closing of the vacuum solenoid valve according to the liquid level of the alkali inlet detected by the liquid level sensor; the controller is also used to adjust the opening of the vacuum solenoid valve according to the pressure detected by the pressure sensor; the controller is also used to adjust the opening of the soft water solenoid valve according to the filter cake thickness detected by the thickness sensor; and the controller is also used to adjust the opening of the cold air solenoid valve according to the washing water temperature detected by the temperature sensor.
[0009] Furthermore, the alkali production system also includes: a drive motor for the rotary drum alkali filter and a vacuum pump;
[0010] The drive motor of the rotary drum alkali filter is located outside the alkali tank and is fixedly connected to the alkali tank; the drive motor is rotatably connected to the rotating shaft of the rotary drum alkali filter; the drive motor is electrically connected to the controller; the vacuum pump is connected to the vacuum separator pipeline; the drive motor is used to drive the rotary drum alkali filter to rotate; the controller is also used to adjust the speed of the drive motor according to the alkali inlet flow rate detected by the flow sensor.
[0011] Furthermore, the alkali production system also includes: an air tank, a high-level washing water tank, a washing sprayer, an alkali tank, an alkali solution tank, two fixing rods, and a scraper;
[0012] The air tank is connected to the rotary drum alkali filter via pipeline; the high-level washing water tank is connected to the washing sprayer via pipeline; the washing sprayer is located diagonally above the rotary drum alkali filter, and the washing sprayer is spaced at a preset distance from the rotary drum alkali filter; the alkali tank is connected to the alkali solution tank via pipeline; the alkali solution bucket is connected to the alkali solution tank via pipeline; the fixing rods are located on the outside of the alkali solution tank, and the fixing rods are fixedly connected to the alkali solution tank; both sides of the scraper are fixedly connected to the fixing rods.
[0013] Furthermore, the system also includes a display screen located on the controller and electrically connected to the controller; the display screen is used to display the flow rate measured by the flow sensor, the pressure value measured by the pressure sensor, the temperature measured by the temperature sensor, the liquid level measured by the liquid level sensor, and the filter cake thickness measured by the thickness sensor.
[0014] The advantages of this invention are as follows: In this invention, the controller adjusts the opening of the alkali inlet solenoid valve based on the alkali inlet flow rate detected by the flow sensor; the controller controls the vacuum solenoid valve to open or close based on the liquid level of the alkali inlet detected by the level sensor; the controller also controls the opening of the vacuum solenoid valve based on the pressure detected by the pressure sensor; the controller also controls the opening of the soft water solenoid valve based on the filter cake thickness detected by the thickness sensor; and the controller also controls the opening of the soft water solenoid valve based on the washing water temperature detected by the temperature sensor. Through the controller, automatic control of the alkali inlet solenoid valve, vacuum solenoid valve, cold air solenoid valve, and soft water solenoid valve is achieved, eliminating the need for manual operation, shortening the changeover time, and reducing the workload of employees. Attached image description:
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.
[0016] Figure 1 This is a schematic diagram of the structure of an alkali production system provided by this utility model;
[0017] Figure 2 yes Figure 1 Side view of the structure of the transfer drum filter;
[0018] Figure 3 yes Figure 1 Front view of the structure of the transfer drum filter; Detailed implementation method:
[0019] 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.
[0020] Figure 1 This is a schematic diagram of the structure of an alkali production system provided by this utility model. Figure 2 yes Figure 1 See the side view of the transfer drum filter structure. Figures 1-2 The alkali production system includes: a vacuum separator 1, a drum filter 2, an alkali tank 3, an alkali inlet solenoid valve 5, a vacuum solenoid valve 8, a cold air solenoid valve 6, a soft water solenoid valve 7, a sensor assembly, and a controller; the alkali inlet solenoid valve 5, the vacuum solenoid valve 8, the cold air solenoid valve 6, the soft water solenoid valve 7, and the sensor assembly are all electrically connected to the controller; the vacuum separator 1 is piped to the drum filter 2; a mother liquor valve 9 is installed on the drain pipe at the bottom of the vacuum separator 1, and a liquid level valve 9 is installed in the alkali tank 3. The system consists of at least two fixed supports 30 and at least two pressure rollers 31. The fixed supports 30 are located at the bottom of the alkali tank 3, and the pressure rollers 31 are located on the fixed supports 30, with the fixed supports 30 and pressure rollers 31 rotatably connected. The fixed supports 30 are fixedly connected to the rotary drum alkali filter 2, and the pressure rollers 31 are movably connected to the rotary drum alkali filter 2. The sensor assembly includes a flow sensor 17, a pressure sensor 21, a temperature sensor 20, a liquid level sensor 18, and a thickness sensor 19. The flow sensor 17 is located inside the alkali inlet pipe, and the pressure sensor 21 is located in a vacuum. Inside separator 1, temperature sensor 20 is located inside the washing water pipe, liquid level sensor 18 is located inside the alkali tank 3, and thickness sensor 19 is located on the drum of the rotary drum alkali filter 2; alkali inlet solenoid regulating valve 5 is located on the feed pipe of the rotary drum alkali filter 2, vacuum solenoid regulating valve 8 is located on the exhaust pipe of vacuum separator 1, cold air solenoid regulating valve 6 is located on the air inlet pipe of the rotary drum alkali filter 2, and soft water solenoid regulating valve 7 is located on the washing water pipe, and soft water solenoid regulating valve 7 is close to the rotary drum alkali filter 2; the controller is used to adjust the opening degree of alkali inlet solenoid regulating valve 5 according to the alkali inlet flow rate detected by flow sensor 17; the controller is also used to adjust the opening or closing of vacuum solenoid regulating valve 8 according to the liquid level position of alkali inlet detected by liquid level sensor 18; the controller is also used to adjust the opening degree of vacuum solenoid regulating valve 8 according to the pressure detected by pressure sensor 21; the controller is also used to adjust the opening degree of soft water solenoid regulating valve 7 according to the filter cake thickness detected by thickness sensor 19; the controller is also used to adjust the opening degree of cold air solenoid regulating valve 6 according to the washing water temperature detected by temperature sensor 20.
[0021] The controller can be a distributed control system (DCS system). The flow sensor 17 is used to monitor the alkali inlet flow rate in real time; the pressure sensor 21 is used to monitor the pressure inside the vacuum separator 1 in real time; the temperature sensor 20 is used to monitor the temperature inside the drum filter 2 in real time; the liquid level sensor 18 is used to monitor the liquid level of the alkali in the alkali tank 3 in real time; the thickness sensor 19 is used to monitor the thickness of the filter cake on the drum of the drum filter 2 in real time; the vacuum separator 1 is used to achieve gas-liquid separation of the filtered alkali inlet under vacuum negative pressure; the drum filter 2 is used to filter out the sodium bicarbonate solid particles in the alkali inlet; and the alkali tank 3 is used to contain the alkali inlet.
[0022] Specifically, initially, the rotary drum alkali filter 2 is started and the mother liquor valve 9 is opened. Flow sensor 17 monitors the alkali inlet flow rate in the alkali inlet pipe. The controller adjusts the opening of the alkali inlet solenoid valve 5 according to the alkali inlet flow rate monitored by flow sensor 17. When the alkali inlet flow rate reaches the flow threshold, the controller adjusts the opening of the alkali inlet solenoid valve 5 to 90%. At this time, the alkali solution enters the alkali tank 3. Liquid level sensor 18 monitors the liquid level of the alkali solution in the alkali tank 3. When the liquid level reaches the preset threshold, the controller controls the vacuum solenoid valve 8 to open. At this time, pressure sensor 21 monitors the pressure value in the vacuum separator 1. The controller adjusts the opening of the vacuum solenoid valve 8 according to the pressure value monitored by pressure sensor 21 until the vacuum degree in the vacuum separator 1 is maintained at -35kPa to -45kPa. At this time, the negative pressure generated in the vacuum separator 1 causes the rotary drum alkali filter 2 to filter out sodium bicarbonate solid particles. The mother liquor (i.e., the alkali inlet without sodium bicarbonate solid particles) is drawn into the vacuum separator 1 and discharged from the drain pipe at the bottom of the vacuum separator 1. As the drum filter 2 rotates, more and more sodium bicarbonate solid particles accumulate on the drum of the drum filter 2, forming a filter cake. At this time, the thickness sensor 19 monitors the thickness of the filter cake in real time. The controller adjusts the opening of the soft water solenoid regulating valve 7 according to the thickness of the filter cake, so that soft water is sprayed onto the filter cake. Under the negative pressure generated in the vacuum separator 1, the soft water passes through the filter cake and enters the vacuum separator 1, thereby reducing the residue of mother liquor on the filter cake. The temperature sensor 20 monitors the temperature of the washing water in real time. When the temperature is higher than the preset temperature value, the controller adjusts the opening of the cold air solenoid regulating valve 6, so that cold air enters the drum filter 2, avoiding the filter cake from softening and becoming more viscous due to the excessively high temperature of the washing water in the drum filter 2, which would make the filter cake difficult to peel off or even block the filter cloth pores and reduce the filtration efficiency.
[0023] Figure 3 yes Figure 1 See the front view of the transfer drum filter structure. Figure 1 and Figure 3Based on the above embodiments, the alkali production system further includes: a rotary drum filter drive motor 15 and a vacuum pump 14; the rotary drum filter drive motor 15 is located outside the alkali tank 3 and is fixedly connected to the alkali tank 3; the rotary drum filter drive motor 15 is rotatably connected to the rotating shaft of the rotary drum filter 2; the rotary drum filter drive motor 15 is electrically connected to the controller; the vacuum pump 14 is connected to the vacuum separator 1 via a pipeline; the rotary drum filter drive motor 15 is used to drive the rotary drum filter 2 to rotate; the controller is also used to adjust the rotation speed of the rotary drum filter drive motor 15 according to the alkali inlet flow rate detected by the flow sensor 17.
[0024] The vacuum pump 14 is used to extract air from the vacuum separator 1. Specifically, at the beginning, the controller adjusts the speed of the rotary drum filter drive motor 15 according to the alkali inlet flow monitored by the flow sensor 17, thereby changing the speed of the rotary drum filter 2 through the rotary drum filter drive motor 15. When the controller adjusts the opening of the vacuum solenoid regulating valve 8 according to the pressure value monitored by the pressure sensor 21, the vacuum pump 14 extracts air from the vacuum separator 1, so that the vacuum degree in the vacuum separator 1 is maintained at -35kPa to -45kPa.
[0025] In this invention, the motor speed of the rotary drum alkali filter 2 is automatically adjusted according to the alkali inlet flow rate, which avoids vibration of the rotary drum alkali filter 2 due to sudden load changes and reduces energy consumption.
[0026] See Figure 1 Based on the above embodiments, the alkali production system further includes: an air tank 10, a high-level washing water tank 11, a washing sprayer 4, an alkali tank 12, an alkali solution tank 13, two fixing rods 22, and a scraper 16; the air tank 10 is connected to the rotary drum alkali filter 2 by a pipeline, the high-level washing water tank 11 is connected to the washing sprayer 4 by a pipeline, the washing sprayer 4 is located diagonally above the rotary drum alkali filter 2, and the washing sprayer 4 is spaced at a preset distance from the rotary drum alkali filter 2; the alkali tank 12 is connected to the alkali solution tank 3 by a pipeline; the alkali solution tank 13 is connected to the alkali solution tank 3 by a pipeline; the fixing rods 22 are located on the outside of the alkali solution tank 3, and the fixing rods 22 are fixedly connected to the alkali solution tank 3; the two sides of the scraper 16 are fixedly connected to the fixing rods 22 respectively.
[0027] The air tank 10 provides cold air, and the high-level washing water tank 11 provides soft water. The alkali tank 12 collects alkali material; the alkali liquid tank 13 supplies alkali material to the rotary drum alkali filter 2. When the controller controls the opening of the soft water solenoid valve 7 according to the thickness of the filter cake, the soft water in the high-level washing water tank 11 is sprayed onto the filter cake through the washing sprayer 4. Under the negative pressure generated in the vacuum separator 1, the soft water passes through the filter cake and enters the vacuum separator 1. When the controller controls the opening of the soft water solenoid valve 7 according to the thickness of the filter cake, the cold air in the air tank 10 enters the rotary drum alkali filter 2. After the filter cake is washed and cooled by the cold air, the filter cake on the rotary drum alkali filter 2 is peeled off by the scraper 16.
[0028] See Figure 1 Based on the above embodiments, the alkali production system further includes: a display screen, which is located on the controller and electrically connected to the controller; the display screen is used to display the flow rate measured by the flow sensor 17, the pressure value measured by the pressure sensor 21, the temperature measured by the temperature sensor 20, the liquid level measured by the liquid level sensor 18, and the filter cake thickness measured by the thickness sensor 19.
[0029] In this invention, the flow rate measured by the flow sensor 17, the pressure value measured by the pressure sensor 21, the temperature measured by the temperature sensor 20, the liquid level measured by the liquid level sensor 18, and the filter cake thickness measured by the thickness sensor 19 are displayed on the display screen.
[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An alkali production system, characterized in that, include: Vacuum separator, rotary drum alkali filter, alkali tank, alkali inlet solenoid regulating valve, vacuum solenoid regulating valve, cold air solenoid regulating valve, soft water solenoid regulating valve, sensor assembly and controller; The alkali inlet electromagnetic regulating valve, vacuum electromagnetic regulating valve, cold air electromagnetic regulating valve, soft water electromagnetic regulating valve, and sensor assembly are all electrically connected to the controller; the vacuum separator is connected to the rotary drum alkali filter via pipeline; a mother liquor valve is installed on the drain pipe at the bottom of the vacuum separator; at least two fixed supports and at least two pressure rollers are installed in the alkali tank; the fixed supports are located at the bottom of the alkali tank; the pressure rollers are located on the fixed supports, and the fixed supports are rotatably connected to the pressure rollers; the fixed supports are fixedly connected to the rotary drum alkali filter, and the pressure rollers are movably connected to the rotary drum alkali filter; the sensor assembly includes a flow sensor, The system includes a pressure sensor, a temperature sensor, a liquid level sensor, and a thickness sensor. The flow sensor is located inside the alkali inlet pipe, the pressure sensor is located inside the vacuum separator, the temperature sensor is located inside the washing water pipe, the liquid level sensor is located inside the alkali tank, and the thickness sensor is located on the drum of the rotary drum alkali filter. The alkali inlet electromagnetic regulating valve is located on the feed pipe of the rotary drum alkali filter, the vacuum electromagnetic regulating valve is located on the exhaust pipe of the vacuum separator, the cold air electromagnetic regulating valve is located on the air inlet pipe of the rotary drum alkali filter, and the soft water electromagnetic regulating valve is located on the washing water pipe, with the soft water electromagnetic regulating valve close to the rotary drum alkali filter. The controller is used to adjust the opening of the alkali inlet solenoid valve according to the alkali inlet flow rate detected by the flow sensor; the controller is also used to control the vacuum solenoid valve to open or close according to the liquid level of the alkali inlet detected by the liquid level sensor; the controller is also used to adjust the opening of the vacuum solenoid valve according to the pressure detected by the pressure sensor; the controller is also used to adjust the opening of the soft water solenoid valve according to the filter cake thickness detected by the thickness sensor; the controller is also used to adjust the opening of the cold air solenoid valve according to the washing water temperature detected by the temperature sensor.
2. The alkali production system according to claim 1, characterized in that, Also includes: The rotary drum alkali filter's drive motor and vacuum pump; The drive motor of the rotary drum alkali filter is located outside the alkali tank and is fixedly connected to the alkali tank; the drive motor is rotatably connected to the shaft of the rotary drum alkali filter; the drive motor is electrically connected to the controller; the vacuum pump is connected to the vacuum separator pipeline; the drive motor is used to drive the rotary drum alkali filter to rotate; the controller is also used to adjust the speed of the drive motor according to the alkali inlet flow rate detected by the flow sensor.
3. The alkali production system according to claim 1, characterized in that, Also includes: Air tank, high-level wash water tank, washing sprayer, alkali tank, alkali solution tank, two fixing rods and scraper; The air tank is connected to the rotary drum alkali filter via a pipeline; the high-level washing water tank is connected to the washing sprayer via a pipeline; the washing sprayer is located diagonally above the rotary drum alkali filter, and the washing sprayer is spaced at a predetermined distance from the rotary drum alkali filter; the alkali tank is connected to the alkali solution tank via a pipeline; the alkali solution bucket is connected to the alkali solution tank via a pipeline; the fixing rods are located on the outside of the alkali solution tank, and the fixing rods are fixedly connected to the alkali solution tank; both sides of the scraper are fixedly connected to the fixing rods.
4. The alkali production system according to claim 1, characterized in that, Also includes: A display screen is located on the controller and is electrically connected to the controller; The display screen shows the flow rate measured by the flow sensor, the pressure value measured by the pressure sensor, the temperature measured by the temperature sensor, the liquid level measured by the liquid level sensor, and the filter cake thickness measured by the thickness sensor.