Automatic chromium pickling solution configuration system
Patent Information
- Application Number
- CN202611091057.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-22
- Publication Date
- 2026-09-25
AI Technical Summary
[0003]本公开的目的在于提供一种铬酸洗液自动配置系统，进而至少在一定程度上克服由于相关技术的限制和缺陷而导致的铬酸洗液配置安全性较低的问题
[0014]本公开实施例中提供的技术方案中，一方面，通过控制系统控制集成在密闭操作舱中的固体投料装置向混合反应装置添加反应物料，通过液体自动加注装置向混合反应装置添加液体物料、包括内层筒体与外层筒体的混合反应装置在控制系统的控制下对反应物料以及液体物料进行搅拌混合得到铬酸洗液，通过成品分装装置对铬酸洗液进行分装，避免了手动配置过程中存在的安全隐患大的问题，提高了安全性。另一方面，由于可以通过铬酸洗液自动配置系统的自动化控制实现固体称量、液体计量、温控溶解、安全混合的全流程闭环操作，确保配制过程的安全性和重复性，提高了配置过程的精准性和配置效率，能够应用于工业生产，提高通用性。
Smart Images
Figure CN122806346A_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of chemical material preparation technology, and more specifically, to an automatic chromic acid cleaning solution preparation system. Background Technology
[0002] Chromic acid cleaning solution is prepared from potassium dichromate and concentrated sulfuric acid, and is a strong acid and strong oxidizing agent. Currently, the preparation of chromic acid cleaning solution relies entirely on manual operation, which is highly dangerous. The existing manual preparation method is as follows: potassium dichromate is weighed into a beaker, dissolved in hot water, and then concentrated sulfuric acid is slowly added along the beaker wall while stirring with a glass rod. Because the dilution process of concentrated sulfuric acid is violently exothermic, the temperature can reach over 90°C, which can easily cause liquid splashing or boiling over. If the operation is not done properly, it may lead to an explosion due to local overheating. Even if the personnel preparing the solution wear protective equipment, they still face the risk of chemical burns, posing a high safety hazard, and the repeatability and accuracy of the preparation process cannot be guaranteed. Summary of the Invention
[0003] The purpose of this disclosure is to provide an automatic chromic acid cleaning solution preparation system, thereby overcoming, at least to some extent, the problem of low safety in chromic acid cleaning solution preparation due to limitations and defects in related technologies.
[0004] According to one aspect of this disclosure, an automatic chromic acid cleaning solution preparation system is provided, comprising: The sealed operating chamber, control system, and auxiliary safety system are integrated; the sealed operating chamber integrates a solid feeding device, an automatic liquid dispensing device, a mixing and reaction device including an inner cylinder and an outer cylinder, and a finished product packaging device. The auxiliary safety system is used to handle temperature and acid mist during the preparation of chromic acid; The control system is used to control the solid feeding device, automatic liquid dispensing device, mixing and reaction device, and finished product dispensing device in the sealed operating chamber, wherein: The solid feeding device is connected to the mixing and reaction device and is used to inject reactants into the mixing and reaction device under the control of the control system. The automatic liquid dispensing device is connected to the mixing and reaction device and is used to inject liquid material into the mixing and reaction device under the control of the control system. The mixing reaction device is used to stir and mix the reactants and the liquid materials under the control of the control system to obtain chromic acid washing solution; The finished product dispensing device automatically dispenses the chromic acid cleaning solution into the storage bottle through the liquid outlet pipe.
[0005] In one exemplary embodiment of this disclosure, the solid feeding device includes a storage hopper, a screw feeder, and a weighing sensor. The bottom discharge end of the storage hopper is connected to the feed end of the screw feeder, and the discharge end of the screw feeder is connected to the mixing reaction device. The screw feeder is arranged at the force-bearing end of the weighing sensor, and the weighing sensor is electrically connected to the control system. The control system controls the screw feeder to start and stop, so as to quantitatively deliver potassium dichromate powder in the storage hopper to the mixing reaction device.
[0006] In one exemplary embodiment of this disclosure, the automatic liquid dispensing device adds pure water to the mixing reaction device under the control of the control system, and then adds sulfuric acid after the added reactants have dissolved.
[0007] In one exemplary embodiment of this disclosure, sulfuric acid is added multiple times, and the amount of sulfuric acid added at one time does not exceed 10 mL.
[0008] In an exemplary embodiment of this disclosure, the mixing reaction device is a double-layered reactor, which includes an inner cylinder and an outer cylinder. The outer cylinder covers the outside of the inner cylinder, and a sandwich cavity is formed between the inner cylinder and the outer cylinder. The sandwich cavity constitutes a jacketed water jacket for introducing circulating cooling water. The solid feeding device and the automatic liquid adding device are both connected to the inner cylinder of the mixing reaction device.
[0009] In one exemplary embodiment of this disclosure, the jacketed water jacket has a heating function and a cooling mode. The heating function is activated by the control system when it is necessary to accelerate the dissolution of the reactants, and the cooling mode is switched by the control system after the reactants have completely dissolved.
[0010] In one exemplary embodiment of this disclosure, the automatic chromic acid cleaning solution preparation system further includes a circulating water temperature control system. The circulating water temperature control system is connected to the jacket cavity of the mixing reaction device and is used to introduce circulating cooling water into the jacket cavity of the mixing reaction device when the control system switches the jacket water jacket to cooling mode, so as to maintain the solution temperature in the mixing reaction device within a safe temperature range, so as to facilitate the addition of sulfuric acid.
[0011] In one exemplary embodiment of this disclosure, the automatic chromic acid cleaning solution preparation system further includes a waste liquid collection system, which is connected to the inner cylinder of the mixing reaction device and is used to collect the cleaning waste liquid obtained by the control system executing an automatic cleaning program after the chromic acid cleaning solution in the mixing reaction device is emptied.
[0012] In one exemplary embodiment of this disclosure, the auxiliary safety system includes a temperature sensor, a liquid level flow sensor, and an exhaust gas absorption device, wherein: A temperature sensor is installed on the inner wall of the inner cylinder of the mixing reaction device and is electrically connected to the control system. It is used to monitor the temperature at which the reactants dissolve in pure water, so that the control system can activate the heating function of the jacket water jacket when heating is required based on the temperature to stabilize the temperature at a first temperature. It also monitors the second temperature in real time during the addition of sulfuric acid and returns the second temperature to the control system so that the control system can stop adding sulfuric acid when the second temperature exceeds the temperature threshold and continue adding sulfuric acid until the required sulfuric acid addition volume is reached when the second temperature does not exceed the temperature threshold. Liquid level and flow sensor to monitor the venting status of the mixing reaction device; The exhaust gas absorption device adsorbs the acid mist generated during the preparation of chromic acid solution.
[0013] In one exemplary embodiment of this disclosure, the control system is further configured to: Add pure water in a measured amount, start stirring and cleaning, and discharge the cleaning waste liquid into the waste liquid collection system to execute the automatic cleaning program. After cleaning is completed, the chromic acid cleaning solution automatic preparation system enters standby mode.
[0014] In the technical solution provided in this disclosure, on the one hand, a solid feeding device integrated in a sealed operating chamber is controlled by a control system to add reactants to a mixing reaction device, and an automatic liquid adding device is used to add liquid materials to the mixing reaction device. The mixing reaction device, including the inner and outer cylinders, stirs and mixes the reactants and liquid materials under the control of the control system to obtain chromic acid cleaning solution. The chromic acid cleaning solution is then packaged using a finished product dispensing device. This avoids the significant safety hazards associated with manual preparation and improves safety. On the other hand, because the automatic chromic acid cleaning solution preparation system can achieve a closed-loop operation of solid weighing, liquid metering, temperature-controlled dissolution, and safe mixing, it ensures the safety and repeatability of the preparation process, improves the accuracy and efficiency of the preparation process, and can be applied to industrial production, thus increasing its versatility.
[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description
[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.
[0017] Figure 1 A block diagram illustrating an automatic chromic acid cleaning solution preparation system according to an embodiment of the present disclosure is shown.
[0018] Figure 2 The schematic diagram illustrates the specific structure of the automatic chromic acid cleaning solution preparation system in an embodiment of this disclosure. Detailed Implementation
[0019] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this disclosure more comprehensive and complete, and to fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced with one or more of the specific details omitted, or other methods, components, apparatus, steps, etc., can be employed. In other instances, well-known technical solutions are not shown or described in detail to avoid obscuring various aspects of this disclosure.
[0020] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.
[0021] This disclosure aims to provide an automated chromic acid cleaning solution preparation device to address the problems of significant safety hazards, low accuracy, and poor efficiency associated with existing manual preparation methods. Through automated control, it achieves a closed-loop operation encompassing solid weighing, liquid metering, temperature-controlled dissolution, and safe mixing, ensuring the safety and repeatability of the preparation process.
[0022] This disclosure provides an automatic chromic acid cleaning solution preparation system, referencing... Figure 1 As shown, the automatic chromic acid cleaning solution preparation system 100 mainly includes a sealed operating chamber 110, a control system 120, and an auxiliary safety system 130, wherein: The sealed operating chamber 110 integrates a solid feeding device 111, an automatic liquid dispensing device 112, a mixing and reaction device 113 including an inner cylinder and an outer cylinder, and a finished product dispensing device 114. The auxiliary safety system 130 is used to handle temperature and acid mist during the preparation of chromic acid; The control system 120 is used to control the solid feeding device, the automatic liquid dispensing device, the mixing and reaction device, and the finished product dispensing device in the sealed operating chamber. The solid feeding device is connected to the mixing and reaction device and is used to inject reactants into the mixing and reaction device under the control of the control system. An automatic liquid dispensing device is connected to the mixing and reaction device and is used to inject liquid material into the mixing and reaction device under the control of the control system. The mixing reaction device is used to stir and mix the reactants and the liquid materials under the control of the control system to obtain chromic acid cleaning solution; The finished product dispensing device automatically dispenses the chromic acid cleaning solution into the storage bottle through the liquid outlet pipe.
[0023] Next, the automatic chromic acid cleaning solution preparation system of the present disclosure will be described in detail with reference to the accompanying drawings.
[0024] The sealed operating chamber 110 integrates a solid feeding device 111, an automatic liquid dispensing device 112, a mixing reaction device 113 including an inner cylinder and an outer cylinder, and a finished product dispensing device 114. The solid feeding device is connected to the mixing reaction device and is used to inject reactant materials into the mixing reaction device under the control of the control system. The reactant materials can be solid materials used to prepare chromic acid cleaning solutions, such as potassium dichromate powder. Exemplarily, the solid feeding device includes a storage hopper, a screw feeder, and a weighing sensor. The bottom discharge end of the storage hopper is connected to the inlet end of the screw feeder, the discharge end of the screw feeder is connected to the mixing reaction device, the screw feeder is arranged at the force-bearing end of the weighing sensor, and the weighing sensor is electrically connected to the control system. The control system controls the screw feeder to start and stop, thereby quantitatively conveying the potassium dichromate powder in the storage hopper to the mixing reaction device.
[0025] The automatic liquid dispensing device is connected to the mixing and reaction device and is used to inject liquid materials into the mixing and reaction device under the control of the control system. The liquid materials can be pure water and sulfuric acid. The automatic liquid dispensing module first adds pure water to dissolve the reactants, and then adds sulfuric acid after the reactants have dissolved.
[0026] The mixing reactor is used to stir and mix reactants and liquid materials under the control of a control system to obtain a chromic acid cleaning solution. (Reference) Figure 2As shown, the mixing reaction device is a double-layered reactor, comprising an inner cylinder and an outer cylinder. The outer cylinder covers the outside of the inner cylinder, forming a sandwich cavity between them. The open ends of the inner and outer cylinders are sealed together, and the sandwich cavity is a closed cavity. The sandwich cavity forms a water jacket for circulating cooling water; the circulating cooling water can continuously circulate through the sandwich cavity through inlet and outlet holes. Both the solid feeding device and the automatic liquid dispensing device are connected to the interior of the inner cylinder of the mixing reaction device. The water jacket has heating and cooling modes. A temperature sensor included in the auxiliary safety system monitors temperature changes during the dissolution process of the reactants. When heating is required to promote and accelerate the dissolution of the reactants, the control system activates the heating function of the water jacket to stabilize the temperature at a first temperature. The first temperature is 60°C. A temperature sensor 131 can be installed on the first side of the inner wall of the inner cylinder of the mixing reaction device, and a stirring device 134 can be installed on the bottom side. A liquid level and flow sensor 132 can be installed on the second side of the inner wall of the inner cylinder of the mixing reaction device. The first and second sides can be arranged opposite to each other. In this embodiment, the distance from the temperature sensor and the liquid level and flow sensor to the bottom side of the mixing reaction device is not limited. The top side of the inner cylinder of the mixing reaction device is connected to the exhaust gas absorption device 133.
[0027] After the reactants have completely dissolved in the cooling mode, the control system switches to maintain the solution temperature within a safe range, specifically below 40°C, to prepare for the addition of sulfuric acid. The automatic chromic acid cleaning solution preparation system also includes a circulating water temperature control system 140, which is connected to the jacket cavity of the mixing reaction device. This system supplies circulating cooling water into the jacket cavity of the mixing reaction device when the control system switches the jacket water jacket to cooling mode, maintaining the solution temperature within the mixing reaction device within a safe range to facilitate the addition of sulfuric acid.
[0028] During the addition of sulfuric acid, a temperature sensor in the auxiliary safety system monitors the second temperature corresponding to the exothermic reaction in real time. This second temperature is then fed back to the control system, which automatically pauses the addition of sulfuric acid if the second temperature exceeds a threshold value, and resumes addition if the second temperature does not exceed the threshold. The temperature threshold can be 90℃, and can be set on the human-machine interface of the control system according to operational requirements. When the second temperature exceeds 90℃, the control system automatically pauses the addition of sulfuric acid, and resumes addition after the second temperature drops. The process of adding sulfuric acid is fully automated, avoiding the risk of localized overheating and splashing caused by excessively rapid operation during manual acid addition.
[0029] After the sulfuric acid is added, the control system controls the stirring device to maintain stirring and adjusts the cooling jacket as needed to maintain a suitable temperature, such as room temperature, to ensure the solution reacts fully and forms a uniform reddish-brown chromic acid cleaning solution. The automatic chromic acid cleaning solution preparation system also includes a sight glass, allowing operators to observe the solution's state. A reddish-brown solution indicates successful preparation, while a green solution indicates failure. For user convenience, an automatic alert device can also be used to monitor the chromic acid cleaning solution's status.
[0030] After the chromic acid cleaning solution is prepared, the finished product dispensing device automatically dispenses the chromic acid cleaning solution into the storage bottle through the dispensing pipe. The control system starts the dispensing pump, which automatically dispenses the cleaning solution into the brown ground glass stoppered storage bottle through the dispensing pipe.
[0031] The auxiliary safety system is used to handle temperature and acid mist during the chromic acid preparation process. The system includes a temperature sensor, a liquid level / flow sensor, and a tail gas absorption device. The temperature sensor, installed on the inner wall of the inner cylinder of the mixing reactor and electrically connected to the control system, monitors the temperature at which the reactants dissolve in pure water. This allows the control system to determine when heating is needed and activate the heating function of the jacketed water jacket to stabilize the temperature at a first temperature. During the addition of sulfuric acid, the system monitors a second temperature in real time and sends this second temperature back to the control system. If the second temperature exceeds a threshold, the control system will pause the addition of sulfuric acid; if it does not exceed the threshold, the addition will continue. The auxiliary safety system also includes a liquid level / flow sensor, also installed on the inner wall of the inner cylinder of the mixing reactor and electrically connected to the control system. This sensor monitors the evacuation status of the mixing reactor. When the reactor is evacuated, the control system is notified to stop the corresponding pumps to prevent them from running dry. The reactor is considered evacuated when the liquid level drops to the evacuation threshold.
[0032] The auxiliary safety system also includes an exhaust gas absorption device 133. The exhaust gas absorption device is located outside the sealed operating chamber and is connected to the inner cylinder of the mixing reaction device via the top side of the inner cylinder. It adsorbs the acid mist generated during the preparation of the chromic acid solution. Throughout the entire chromic acid solution preparation process, a temperature sensor monitors the temperature in real time; if the temperature is exceeded, the system automatically pauses and triggers an alarm.
[0033] When the chromic acid cleaning solution in the mixing reaction device is emptied, the control system can automatically initiate a cleaning program. For example, pure water can be added in a measured amount to start the stirring and cleaning process, and the resulting cleaning waste liquid can be discharged into the waste liquid collection system 150 to prevent residual cleaning waste liquid from crystallizing and clogging the pipeline. After cleaning is completed, the chromic acid cleaning solution automatic preparation system enters standby mode.
[0034] In this embodiment, all components in contact with the corrosive medium (sulfuric acid) are made of corrosion-resistant materials such as PTFE, glass, or borosilicate glass. For example, the automatic liquid dispensing device, the mixing and reaction device, and the finished product dispensing device are all made of corrosion-resistant materials such as PTFE, glass, or borosilicate glass.
[0035] Based on the above-mentioned automatic chromic acid cleaning solution preparation system, the chromic acid preparation process mainly includes the following steps: Step 1: Parameter settings.
[0036] Operators input formula parameters through the human-machine interface of the control system: potassium dichromate mass (e.g., 25g), pure water volume (e.g., 50mL), concentrated sulfuric acid volume (e.g., 450mL), and set the upper limit of the dissolution temperature, i.e., the temperature threshold, and the stirring time. The temperature threshold can be, for example, 90℃. The control system automatically calculates the action sequence and metering values of each actuator. The formula parameters can be set according to actual configuration requirements. Each actuator includes a solid feeding device, an automatic liquid dispensing device, a mixing and reaction device, a finished product dispensing device, and the components contained in each device. The action sequence of each actuator includes, for example, the solid feeding device dispensing the reactants, the automatic liquid dispensing device dispensing the liquid materials, the mixing and reaction device mixing, and the finished product dispensing device automatically dispensing.
[0037] Step 2: Add reactants.
[0038] The control system activates the screw feeder in the solid feeding device. The reactant material (potassium dichromate powder) in the storage hopper falls into the screw feeder. A weighing sensor acquires the weight of the reactant material in real time and uploads the weight to the control system. The control system compares the weight with a preset value and controls the screw feeder to start and stop accordingly. Specifically, when the weight reaches the preset value, the control system shuts down the screw feeder, completing the quantitative delivery of the reactant material and quantitatively transferring the potassium dichromate powder from the storage hopper to the mixing reaction device. The entire process is conducted in a closed environment to prevent dust leakage.
[0039] Step 3: Add pure water.
[0040] The control system activates the automatic liquid dispensing device, quantitatively adding pure water from the tank to the mixing reaction apparatus. Simultaneously, the stirring device in the mixing reaction apparatus is activated, and its speed is adjusted to 200-500 rpm for stirring. Since the dissolution of potassium dichromate powder is an endothermic reaction, a temperature sensor in the auxiliary safety system monitors temperature changes during the dissolution process. If heating is detected to promote the dissolution of potassium dichromate powder, the control system can activate the heating function of the jacketed water jacket to stabilize the temperature at approximately a first preset temperature, which can be 60°C.
[0041] Step 4: Cooling and acid preparation.
[0042] After the potassium dichromate powder is completely dissolved, the control system switches the jacketed water jacket to cooling mode, and circulating cooling water is introduced through the circulating water temperature control system to lower the solution temperature to a safe range, in preparation for the addition of sulfuric acid. The safe temperature range is, for example, below 40°C.
[0043] Step 5: Automatic addition of sulfuric acid.
[0044] The control system activates the automatic liquid dispensing device to add sulfuric acid in small, frequent increments, with each addition not exceeding 10 mL. During the addition, the stirring device in the mixing reaction apparatus continuously agitates the mixture to ensure uniform mixing. A temperature sensor in the auxiliary safety system monitors the exothermic secondary temperature of the reaction in real time. If this secondary temperature exceeds the set upper limit (e.g., 90°C), the control system automatically pauses the addition of sulfuric acid, resuming only after the temperature has subsided. This fully automated process avoids the risk of localized overheating and splashing caused by rapid manual acid addition.
[0045] Step 6: Stir and mature at a constant temperature.
[0046] After all the sulfuric acid has been added, the control system maintains continuous stirring by the agitator and adjusts the cooling jacket as needed to keep the temperature suitable (e.g., room temperature) to ensure the solution reacts fully and forms a uniform reddish-brown chromic acid cleaning solution. The sight glass allows operators to observe the state of the chromic acid cleaning solution; a normal solution is reddish-brown, while a greenish solution indicates a malfunction.
[0047] Step 7: Dispensing chromic acid cleaning solution.
[0048] After the chromic acid cleaning solution is prepared, the control system starts the dispensing pump, which automatically dispenses the chromic acid cleaning solution into brown ground glass stoppered storage bottles through the outlet pipe. The liquid level and flow sensor monitors the emptying status of the chromic acid cleaning solution in the mixing reaction device, and stops dispensing when the emptying status is reached to prevent the dispensing pump from running dry.
[0049] Step 8: Cleaning and standby.
[0050] After the chromic acid cleaning solution in the mixing reactor is drained, the control system can execute an automatic cleaning program. Specifically, pure water is added to the mixing reactor in a measured amount, the stirring device is started for cleaning, and then the cleaning waste liquid is discharged into the waste liquid collection system to prevent residual cleaning solution from crystallizing and clogging the pipeline. After cleaning is completed, the automatic chromic acid cleaning solution preparation system enters standby mode.
[0051] It should be added that the automatic chromic acid cleaning solution preparation system also includes an exhaust gas absorption device. The exhaust gas absorption device can be installed on the outside of the sealed operating chamber. The exhaust gas absorption device operates continuously throughout the entire chromic acid cleaning solution preparation process to adsorb the acid mist generated during the preparation process.
[0052] Throughout the entire chromic acid cleaning solution preparation process, a temperature sensor monitors the second temperature during the addition of sulfuric acid in real time. When the second temperature exceeds the temperature threshold, the addition of sulfuric acid is automatically paused and an alarm is triggered.
[0053] The chromic acid cleaning solution automatic preparation system provided in this embodiment uses a control system to control a solid feeding device integrated in a sealed operating chamber to add reactants to a mixing reaction device, and an automatic liquid adding device to add liquid materials to the mixing reaction device. Under the control of the control system, the mixing reaction device, including the inner and outer cylinders, stirs and mixes the reactants and liquid materials to obtain the chromic acid cleaning solution. The chromic acid cleaning solution is then packaged using a finished product dispensing device. This avoids the significant safety hazards associated with manual preparation, thus improving safety. Furthermore, the automated control of the chromic acid cleaning solution automatic preparation system enables a closed-loop operation of the entire process, including solid weighing, liquid metering, temperature-controlled dissolution, and safe mixing, ensuring the safety and repeatability of the preparation process and improving its accuracy and efficiency.
[0054] Furthermore, although the steps of the method in this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or a step may be broken down into multiple steps.
[0055] From the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, terminal device, or network device, etc.) to execute the methods according to the embodiments of this disclosure.
[0056] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of this disclosure and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.
[0057] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.
[0058] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.
[0059] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.
Claims
1. An automatic chromic acid cleaning solution preparation system, characterized in that, include: The sealed operating chamber, control system, and auxiliary safety system are integrated; the sealed operating chamber integrates a solid feeding device, an automatic liquid dispensing device, a mixing and reaction device including an inner cylinder and an outer cylinder, and a finished product packaging device. The auxiliary safety system is used to handle temperature and acid mist during the preparation of chromic acid; The control system is used to control the solid feeding device, automatic liquid dispensing device, mixing and reaction device, and finished product dispensing device in the sealed operating chamber, wherein: The solid feeding device is connected to the mixing and reaction device and is used to inject reactants into the mixing and reaction device under the control of the control system. The automatic liquid dispensing device is connected to the mixing and reaction device and is used to inject liquid material into the mixing and reaction device under the control of the control system. The mixing reaction device is used to stir and mix the reactants and the liquid materials under the control of the control system to obtain chromic acid washing solution; The finished product dispensing device automatically dispenses the chromic acid cleaning solution into the storage bottle through the liquid outlet pipe.
2. The automatic chromic acid cleaning solution preparation system according to claim 1, characterized in that, The solid feeding device includes a storage hopper, a screw feeder, and a weighing sensor. The bottom discharge end of the storage hopper is connected to the feed end of the screw feeder, and the discharge end of the screw feeder is connected to the mixing reaction device. The screw feeder is arranged at the force-bearing end of the weighing sensor, and the weighing sensor is electrically connected to the control system. The control system controls the screw feeder to start and stop, so as to quantitatively transport potassium dichromate powder in the storage hopper to the mixing reaction device.
3. The automatic chromic acid cleaning solution preparation system according to claim 1, characterized in that, The automatic liquid dispensing device adds pure water to the mixing reaction device under the control of the control system, and then adds sulfuric acid after the added reactants have dissolved.
4. The automatic chromic acid cleaning solution preparation system according to claim 3, characterized in that, Sulfuric acid is added multiple times, and the amount of sulfuric acid added at one time shall not exceed 10 mL.
5. The automatic chromic acid cleaning solution preparation system according to claim 1, characterized in that, The mixing reaction device is a double-layered reactor, which includes an inner cylinder and an outer cylinder. The outer cylinder covers the outside of the inner cylinder, and a sandwich cavity is formed between the inner cylinder and the outer cylinder. The sandwich cavity constitutes a jacketed water jacket for circulating cooling water. The solid feeding device and the automatic liquid filling device are both connected to the inner cylinder of the mixing reaction device.
6. The automatic chromic acid cleaning solution preparation system according to claim 5, characterized in that, The jacketed water jacket has a heating function and a cooling mode. The heating function is activated by the control system when it is necessary to accelerate the dissolution of the reactants. The cooling mode is switched by the control system after the reactants have completely dissolved.
7. The automatic chromic acid cleaning solution preparation system according to claim 5, characterized in that, The automatic chromic acid cleaning solution preparation system also includes a circulating water temperature control system, which is connected to the jacket cavity of the mixing reaction device. The circulating water temperature control system is used to introduce circulating cooling water into the jacket cavity of the mixing reaction device when the control system switches the jacket water jacket to cooling mode, so as to maintain the solution temperature in the mixing reaction device within a safe temperature range, so as to facilitate the addition of sulfuric acid.
8. The automatic chromic acid cleaning solution preparation system according to claim 1, characterized in that, The automatic chromic acid cleaning solution preparation system also includes a waste liquid collection system, which is connected to the inner cylinder of the mixing reaction device and is used to collect the cleaning waste liquid obtained by the control system after the chromic acid cleaning solution in the mixing reaction device is emptied and the automatic cleaning program is executed.
9. The automatic chromic acid cleaning solution preparation system according to claim 1, characterized in that, The auxiliary safety system includes a temperature sensor, a liquid level / flow sensor, and an exhaust gas absorption device, wherein: A temperature sensor is installed on the inner wall of the inner cylinder of the mixing reaction device and is electrically connected to the control system. It is used to monitor the temperature at which the reactants dissolve in pure water, so that the control system can activate the heating function of the jacket water jacket when heating is required based on the temperature to stabilize the temperature at a first temperature. It also monitors the second temperature in real time during the addition of sulfuric acid and returns the second temperature to the control system so that the control system can stop adding sulfuric acid when the second temperature exceeds the temperature threshold and continue adding sulfuric acid until the sulfuric acid addition volume is reached when the second temperature does not exceed the temperature threshold. Liquid level and flow sensor to monitor the venting status of the mixing reaction device; The exhaust gas absorption device adsorbs the acid mist generated during the preparation of chromic acid solution.
10. The automatic chromic acid cleaning solution preparation system according to claim 1, characterized in that, The control system is also used for: Add pure water in a measured amount, start stirring and cleaning, and discharge the cleaning waste liquid into the waste liquid collection system to execute the automatic cleaning program. After cleaning is completed, the chromic acid cleaning solution automatic preparation system enters standby mode.