An automated hydrolysis acid preparation device

Abstract

This invention relates to the field of acid preparation technology, and more particularly to an automated hydrolysis acid preparation device, comprising a preparation unit, a control unit, and two metering units. The preparation unit includes an acid preparation cylinder with a temperature regulating chamber and an insulation layer, a stirring mechanism, and thermocouples to achieve material mixing and temperature control. The metering unit has multiple metering cylinders and regulating cylinders of different volumes, achieving high-precision volume measurement through a drive plate, piston rod, and locking structure, and can automatically combine multiple metering cylinders to complete the output of a specified volume. The control unit receives temperature and signal data and coordinates the metering and preparation process. This invention can accurately control the volume ratio of solute to solvent and the reaction temperature, improving the accuracy of acid concentration, operational safety, and automation level, and is applicable to acid preparation processes with high requirements in various industries.

Description

Technical Field

[0001] This invention relates to the field of acid preparation technology, and in particular to an automated hydrolysis acid preparation device. Background Technology

[0002] Hydrolysis-based acid preparation is a common process in chemical production, widely used in metallurgy, electronics, pharmaceuticals, and fine chemicals to prepare acid solutions of specific concentrations. This process typically involves mixing concentrated acid with a solvent in a specific ratio and completing the hydrolysis reaction under controlled conditions. Because many acid preparation processes involve exothermic, volatile, or even violent reactions, traditional manual acid preparation methods are not only labor-intensive and inefficient, but also highly susceptible to operational errors leading to inaccurate proportions, temperature runaway, and ultimately, product quality fluctuations or safety accidents.

[0003] With the development of automation technology, some semi-automatic or fully automatic acid mixing equipment has emerged, attempting to achieve a certain degree of process control through pumping systems, flow meters, and temperature sensors. However, these devices still have significant limitations: on the one hand, conventional volumetric metering devices are significantly affected by temperature changes, especially when the material temperature fluctuates, causing volume expansion or contraction, making it difficult to guarantee the accuracy of the mixing ratio; on the other hand, existing equipment mostly uses a single metering container or pipeline metering method, which has limited accuracy and cannot meet the requirements of high-precision, multi-batch, and small-volume replenishment mixing. In addition, problems such as severe local heat release and uneven temperature distribution during the mixing process have not yet been effectively solved. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an automated hydrolysis acid preparation device. By combining a multi-stage precision metering system with temperature-coordinated control, it solves the problems of large concentration errors, difficult reaction control, and low safety caused by temperature fluctuations and inaccurate volume measurement in traditional acid preparation processes. Specifically, this is achieved through the following technical solutions.

[0005] This invention provides an automated hydrolysis acid preparation device, comprising:

[0006] A preparation unit for mixing solvents and solutes to prepare acid solutions;

[0007] Two sets of metering units, one set of metering units is used to measure the volume of solute and the other set of metering units is used to measure the volume of solvent. Each set of metering units includes a material bin for storing materials, multiple metering cylinders with volumes in multiples, an adjusting cylinder for micro-volume compensation of materials, and a drive mechanism for driving the reciprocating motion of the pistons inside the metering cylinder and the adjusting cylinder.

[0008] The metering unit achieves accurate measurement of the target volume by combining different combinations of measurement times with the compensation of the adjusting cylinder.

[0009] The control unit is signal-connected to the preparation unit and the metering unit. It is used to receive the target volume value input by the user, control the coordinated operation of each metering cylinder and the regulating cylinder in the metering unit, and transport the measured material to the preparation unit.

[0010] Preferably, the metering unit further includes a housing, an installation frame is provided inside the housing, a material box is installed on the top of the installation frame, a feeding pipe is connected to one side of the material box, a circulation pipe is provided on the side of the material box, and multiple electromagnetic three-way valves are connected to the bottom of the material box.

[0011] Each of the electromagnetic three-way valves is connected to a corresponding metering cylinder. The metering cylinder is mounted on the mounting frame via a first fixing plate. The electromagnetic three-way valve is also connected to a discharge pipe. The piston in each of the metering cylinders is connected to a piston rod.

[0012] The drive mechanism includes a drive plate threadedly connected to the screw, the drive plate slidingly engaging with a guide post via a guide ring, the guide post being mounted on a second fixed plate, the drive plate also having a snap-fit ​​part engaging with each piston rod, and the screw being drively connected to the output end of the drive motor.

[0013] Preferably, the volumes of the plurality of measuring cylinders decrease sequentially in the order of arrangement, and the volume of the larger of two adjacent measuring cylinders is twice the volume of the smaller one;

[0014] The volume of the regulating cylinder is the same as that of the minimum volume measuring cylinder. The first end of the regulating cylinder is fixedly connected to the top of the minimum volume measuring cylinder, and the second end is fixedly installed on the first fixing plate.

[0015] The piston inside the regulating cylinder is fixedly connected to the output end of the telescopic electric cylinder, and the telescopic electric cylinder is fixedly mounted on the second fixed plate.

[0016] Preferably, the preparation unit includes an acid mixing cylinder and a head fixedly installed on the top of the acid mixing cylinder, and a feed pipe for conveying materials is connected to the head;

[0017] The acid mixing cylinder is fitted with an annular temperature regulating chamber. The bottom of the temperature regulating chamber is fixedly connected to the inlet pipe, and the top is fixedly connected to the outlet pipe.

[0018] Preferably, the exterior of the temperature-regulating chamber is covered with an annular insulation layer, and the insulation layer is filled with insulation material.

[0019] A valve is installed at the bottom of the acid mixing cylinder, and the valve is connected to the inside of the acid mixing cylinder.

[0020] Preferably, a stirring motor is installed on the top of the end cap, and the output end of the stirring motor is connected to the stirring shaft via a gearbox, the stirring shaft extending into the acid mixing cylinder.

[0021] Preferably, an inclined plate is installed at the bottom of the feed pipe. The inclined plate is inclined from top to bottom and from the axis of the acid mixing cylinder outwards. The lower end of the inclined plate is close to the inner wall of the acid mixing cylinder.

[0022] Preferably, a thermocouple is installed on the end cap, the probe of the thermocouple passes through the end cap and extends to the bottom of the acid mixing cylinder, and the thermocouple is signal-connected to the control unit;

[0023] A liquid level pipe is installed on the outside of the insulation layer. The liquid level pipe is a transparent U-shaped pipe with its first end connected to the bottom of the acid mixing cylinder and its second end connected to the outside. The second end is higher than the top of the acid mixing cylinder.

[0024] Preferably, the latching part includes a cylinder, which is fixedly mounted on the lower surface of the drive plate, and the output end of the cylinder is drivenly connected to two sliders;

[0025] The lower surface of the drive plate is also fixed with a slide rail, and the two sliders are slidably disposed inside the slide rail;

[0026] Each slider is fixed with an arc-shaped gripper. When the two grippers are in the docking state, they are engaged in the annular groove opened on the outer surface of the piston rod. The piston rod passes through the through hole opened on the drive plate.

[0027] The cylinder is connected to the control unit via signal transmission.

[0028] Preferably, the discharge pipe is connected to the feed pipe via a pipeline;

[0029] The circulation pipe inside the metering unit is used to transport the heat transfer medium, and the outlet pipe and inlet pipe are connected to the circulation system of the heat transfer medium.

[0030] After adopting the above technical solution, the beneficial effects of the present invention are:

[0031] 1. By combining a multi-stage decreasing volume measuring cylinder with a precisely adjustable regulating cylinder, high-precision volume measurement of solvent and solute is achieved, significantly improving the accuracy of acid concentration.

[0032] 2. An external temperature control chamber and insulation layer structure are adopted, combined with real-time thermocouple monitoring and a closed-loop temperature control system, to effectively maintain the temperature stability of the liquid during acid preparation and avoid volume errors and reaction runaway caused by temperature fluctuations.

[0033] 3. During the material addition process, the inclined plate structure guides the material to flow along the cylinder wall, which helps to disperse the heat of reaction, reduce the risk of local high temperature and splashing, and improve operational safety.

[0034] 4. The cylinder-driven snap-fit ​​structure enables intelligent collaborative work of multiple measuring cylinders, which can automatically select the unit to participate in the measurement according to the target volume, thus achieving flexible and efficient volume combination output.

[0035] 5. The entire device has a high degree of integration and automation, which reduces manual intervention and improves the consistency and reliability of acid mixing efficiency, making it suitable for precision acid mixing needs under various working conditions. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the installation of an automated hydrolysis acid preparation unit;

[0038] Figure 2 This is a front sectional view of the preparation unit;

[0039] Figure 3 This is a longitudinal sectional view of the preparation unit;

[0040] Figure 4 A three-dimensional diagram of the internal structure of the measuring unit;

[0041] Figure 5 for Figure 4 A stereoscopic view from another perspective;

[0042] Figure 6 This is a front view of the internal structure of the metering unit;

[0043] Figure 7 for Figure 5 A magnified view of a portion of position A in the middle.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100-Preparation unit, 101-End cap, 102-Acid mixing cylinder, 103-Valve, 104-Adjusting chamber, 105-Outlet pipe, 106-Inlet pipe, 107-Insulation layer, 108-Agitator motor, 109-Gearbox, 110-Agitator shaft, 111-Feed pipe, 112-Inclined plate, 113-Thermocouple, 114-Level pipe;

[0046] 200-Metering unit, 201-Box body, 202-Mounting bracket, 203-Material box, 204-Feeding pipe, 205-Circulation pipe, 206-Solenoid three-way valve, 207-Metering cylinder, 208-First fixed plate, 209-Discharge pipe, 210-Piston rod, 211-Drive plate, 212-Guide ring, 213-Guide column, 214-Second fixed plate, 215-Drive motor, 216-Screw, 217-Adjusting cylinder, 218-Telescopic electric cylinder, 220-Snap-fit ​​part, 221-Cylinder, 222-Slide rail, 223-Slider, 224-Gripper, 225-Annular groove, 226-Through hole;

[0047] 300 - Control Unit. Detailed Implementation

[0048] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be practiced without these specific details. The following description of the embodiments is merely to provide a better understanding of the present invention by illustrating examples of the invention.

[0049] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the present invention. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] An embodiment of the present invention provides an automated hydrolysis acid preparation device, see [link to documentation]. Figure 1 The automated hydrolysis acid preparation device includes a preparation unit 100, a control unit 300, and two sets of metering units 200.

[0051] The preparation unit 100 is used to mix the solvent and solute to prepare the acid solution.

[0052] One set of metering units 200 is used to measure the volume of solute, and another set of metering units 200 is used to measure the volume of solvent. The precisely measured solute and solvent are delivered to the preparation unit 100 through pipelines to mix the solute and solvent evenly and prepare an acid solution of the target concentration.

[0053] The control unit 300 is installed outside the metering unit 200 and is connected to the preparation unit 100 and the metering unit 200 by signal. It is used to collect data from the preparation unit 100 and the metering unit 200, calculate the volume of solute and solvent, and control the accurate measurement and preparation of solute and solvent.

[0054] For a further explanation of the above embodiments, see Figure 2 , Figure 3 .

[0055] The preparation unit 100 includes a head 101 and an acid mixing cylinder 102. The head 101 is fixedly installed on the acid mixing cylinder 102 by fastening bolts. A valve 103 is installed at the bottom of the acid mixing cylinder 102. The valve 103 communicates with the inside of the acid mixing cylinder 102 and is used to discharge the acid solution prepared inside the acid mixing cylinder 102 to the outside.

[0056] An annular temperature regulating chamber 104 is provided on the outer surface of the acid mixing cylinder 102. A heat transfer medium flows inside the temperature regulating chamber 104 to regulate and control the temperature inside the acid mixing cylinder 102. The bottom of the temperature regulating chamber 104 is fixedly connected to the inlet pipe 106, and the top of the temperature regulating chamber 104 is fixedly connected to the outlet pipe 105. The heat transfer medium flows into the temperature regulating chamber 104 through the inlet pipe 106, exchanges heat with the acid mixing cylinder 102, and is then discharged outward from the outlet pipe 105.

[0057] An annular insulation layer 107 is provided on the outer surface of the temperature regulating chamber 104. The insulation layer 107 is filled with insulation material to prevent the heat transfer medium flowing in the temperature regulating chamber 104 from absorbing heat from the outside or dissipating heat to the outside, thereby maintaining the heat transfer efficiency between the heat transfer medium and the inside of the acid distribution cylinder 102.

[0058] Among them, the outlet pipe 105 and the inlet pipe 106 are connected to the heat transfer medium circulation system. This circulation system can heat and dissipate heat from the heat transfer medium and circulate the heat transfer medium.

[0059] When the temperature of the acid solution in the acid mixing cylinder 102 is higher than the preset temperature range, the heat transfer medium in the temperature regulating chamber 104 is used to absorb the heat in the acid mixing cylinder 102, and the circulation system is used for heat dissipation; when the temperature of the acid solution in the acid mixing cylinder 102 is lower than the preset temperature range, the acid solution in the acid mixing cylinder 102 absorbs the heat in the temperature regulating chamber 104, and the circulation system is used for heating.

[0060] A stirring motor 108 is provided on the top of the end cap 101. The output end of the stirring motor 108 is connected to the stirring shaft 110 via a gearbox 109. The stirring shaft 110 is located inside the end cap 101 and the acid mixing cylinder 102. The stirring motor 108 drives the stirring shaft 110 to rotate via the gearbox 109 to ensure thorough mixing of solvent and solute during the acid mixing process.

[0061] Two feed pipes 111 are installed on the end cap 101, which are used to transport solute and solvent into the end cap 101 and the acid mixing cylinder 102 respectively. An inclined plate 112 is installed at the bottom of the feed pipe 111. The inclined plate 112 is inclined from top to bottom and from the axis of the acid mixing cylinder 102 outwards, and the lower end face of the inclined plate 112 is close to the inner wall of the acid mixing cylinder 102.

[0062] The inclined plate 112 guides the solvent and solute entering the acid mixing cylinder 102, directing them to the inner wall of the cylinder and allowing them to flow downwards along the inner wall. This helps to disperse the heat of reaction and avoid danger caused by excessive heat release. It also reduces side reactions caused by excessively high local concentrations or liquid splashing caused by sudden increases in local temperature.

[0063] A thermocouple 113 is also installed on the end cap 101. The probe of the thermocouple 113 extends through the end cap 101 to the bottom of the acid mixing cylinder 102. The thermocouple 113 is connected to the control unit 300 via signal.

[0064] Thermocouple 113 is used to measure the temperature of the liquid inside acid mixing cylinder 102 and transmits the temperature signal to control unit 300. After receiving the temperature signal, control unit 300 controls the external circulation system to adjust the temperature of the heat transfer medium, thereby achieving temperature regulation and control of the acid liquid inside acid mixing cylinder 102.

[0065] A liquid level pipe 114 is also installed on the outside of the insulation layer 107. The liquid level pipe 114 is a transparent U-shaped pipe. The first end of the liquid level pipe 114 is connected to the bottom of the acid mixing cylinder 102, and the second end of the liquid level pipe 114 is connected to the outside. A filter screen is installed inside the second end of the liquid level pipe 114, and the second end of the liquid level pipe 114 is higher than the top of the acid mixing cylinder 102. The operator can judge the remaining amount of acid in the acid mixing cylinder 102 by the liquid level height in the liquid level pipe 114.

[0066] In this embodiment, the structure of the preparation unit 100 enables the solvent and solute inside the input end cap 101 and the acid mixing cylinder 102 to be thoroughly mixed. During the input of the solution and solute, they flow downwards along the inner wall of the acid mixing cylinder 102, dispersing the heat of reaction and reducing the risk of local overheating. In addition, the temperature of the solution inside the acid mixing cylinder 102 is monitored at any time by the thermocouple 113, and the temperature of the heat transfer medium is flexibly adjusted, thereby maintaining the stable temperature of the acid solution prepared in the acid mixing cylinder 102.

[0067] For a further explanation of the above embodiments, see Figure 4 , Figure 5 , Figure 6 .

[0068] The metering unit 200 includes a housing 201 and a mounting bracket 202 installed inside the housing 201. The mounting bracket 202 is used for mounting components. A material bin 203 is installed on the top of the mounting bracket 202. One end of the material bin 203 is fixedly connected to a feeding pipe 204. The feeding pipe 204 is used to add materials into the material bin 203. Several circulation pipes 205 are installed on the side of the material bin 203. The circulation pipes 205 are attached to the outer surface of the material bin 203. The inside of the circulation pipes 205 is used to transport heat transfer medium to achieve temperature regulation of the material in the material bin 203.

[0069] In this embodiment, the heat transfer medium in the circulation pipe 205 is used to adjust the temperature of the material in the material box 203 to within the target temperature range. Thus, when the amount of material added is measured by volume during the material addition process, the influence of temperature on the material volume is eliminated, ensuring that the amount of material added is more accurate.

[0070] Several electromagnetic three-way valves 206 are evenly arranged along the length of the bottom of the material box 203. The first interface of the electromagnetic three-way valve 206 is fixedly connected to the material box 203, and the second interface of the electromagnetic three-way valve 206 is fixedly connected to the first end of the metering cylinder 207. Several metering cylinders 207 are fixedly installed on the mounting frame 202 by the first fixing plate 208. The number of electromagnetic three-way valves 206 and metering cylinders 207 are equal and correspond one-to-one. The third interface of the electromagnetic three-way valve 206 is fixedly connected to the discharge pipe 209. The discharge pipe 209 is connected to the feed pipe 111 through a pipeline.

[0071] like Figure 6 As shown, the volumes of the several measuring cylinders 207 decrease sequentially according to their arrangement, and in any two adjacent measuring cylinders 207, the volume of the larger measuring cylinder 207 is twice the volume of the smaller measuring cylinder 207.

[0072] Each measuring cylinder 207 is sealed with a sliding piston inside. The sliding piston is fixed to the first end of the piston rod 210, and the second end of the piston rod 210 is selectively fixed to the drive plate 211 through the snap-fit ​​part 220.

[0073] Several guide rings 212 are fixedly installed on the drive plate 211. Guide posts 213 are slidably arranged inside the guide rings 212. The first end of the guide post 213 is fixed on the second fixed plate 214. The second fixed plate 214 is fixed inside the housing 201. The second end of the guide post 213 is fixed on the first fixed plate 208.

[0074] The drive plate 211 is also threadedly connected to the screw 216. The first end of the screw 216 is driven to the output end of the drive motor 215 through a coupling. The drive motor 215 is fixed to the second fixed plate 214. The second end of the screw 216 is rotatably mounted on the bottom of the first fixed plate 208.

[0075] The number of measuring cylinders 207 is equal to the number of locking parts 220, and the two correspond one-to-one, ensuring that each locking part 220 can individually control its corresponding piston rod 210.

[0076] In this embodiment, the drive motor 215 in the above structure first drives the screw 216 to rotate. Then, through the threaded connection between the screw 216 and the drive plate 211, and the guiding relationship between the guide post 213 and the guide ring 212, the drive plate 211 is reciprocated along the length of the guide post 213, and the piston rod 210 is driven to move synchronously through the drive plate 211.

[0077] When the piston rod 210 moves downward, the first and second ports of the solenoid three-way valve 206 are connected. At this time, the material in the hopper 203 is transferred to the metering cylinder 207 through the solenoid three-way valve 206. When the piston rod 210 moves to the bottom, the metering cylinder 207 is filled. Then the second and third ports of the solenoid three-way valve 206 are connected, and the piston rod 210 begins to move upward, pushing the material inside the metering cylinder 207 outward into the discharge pipe 209.

[0078] By means of the above method, it is ensured that after the piston rod 210 completes one cycle of movement, the volume of the output material is equal to the sum of the volumes of the corresponding metering cylinder 207, thereby ensuring the accuracy of the output material volume.

[0079] In addition, an adjusting cylinder 217 is installed on the side of the smallest measuring cylinder 207. The volume of the adjusting cylinder 217 is the same as that of the smallest measuring cylinder 207. The first end of the adjusting cylinder 217 is fixedly connected to the top end of the smallest measuring cylinder 207. The second end of the adjusting cylinder 217 is fixedly installed on the first fixing plate 208. A sliding piston is sealed inside the adjusting cylinder 217. The sliding piston inside the adjusting cylinder 217 is fixed to the output end of the telescopic electric cylinder 218. The telescopic electric cylinder 218 is fixedly installed on the second fixing plate 214. The telescopic electric cylinder 218 is signal connected to the control unit 300.

[0080] like Figure 6 As shown, when a predetermined volume of material needs to be measured, the total volume V of the material to be measured is first determined. Based on the volume of each measuring cylinder 207, they are determined in descending order as V1, V2, V3, and V4. In addition, the volume of the adjusting cylinder 217 is equal to the volume of the smallest measuring cylinder 207, so the volume of the adjusting cylinder 217 is also V4.

[0081] The total volume V is divided into V1, V2, V3, and V4 in descending order. After rounding down, the missing material is replenished through the regulating cylinder 217.

[0082] For example, V = 3V1 + V2 + V3 + V4 + 0.3V4. The operator inputs the total volume V into the control unit 300. The control unit 300 divides the total volume V in the above manner, and then controls the corresponding snap-fit ​​part 220 of each measuring cylinder 207 to complete the snap-fit ​​of the corresponding number of times, thus completing the measurement of the total volume V.

[0083] Taking the above formula as an example, the measurement process is as follows: Figure 6 The first measuring cylinder 207 measures 3 times from left to right, the second measuring cylinder 207 measures once, the third measuring cylinder 207 measures once, the fourth measuring cylinder 207 measures once, and the adjusting cylinder 217 measures 30% of its total volume.

[0084] By using the above proportioning method, the total volume V can be accurately measured. Since the volume of each measuring cylinder 207 is fixed, and the final accuracy is measured by the small-volume adjusting cylinder 217, the error is easier to control. The volume measured by summing is more accurate than that measured by pipeline measuring instruments or single containers.

[0085] For a further explanation of the above embodiments, see Figure 7 .

[0086] During the process of measuring the total volume, some measuring cylinders 207 may run multiple times or some measuring cylinders 207 may not run. In this case, it is necessary to make adjustments through the corresponding locking parts 220 of each measuring cylinder 207 to control the operating status of the measuring cylinder 207.

[0087] The locking part 220 includes a cylinder 221, which is fixed on the lower surface of the drive plate 211. The cylinder 221 is connected to the control unit 300 via signal. The output end of the cylinder 221 is driven to connect to two relatively moving sliders 223. Both sliders 223 are slidably disposed inside the slide rail 222, which is fixed to the lower surface of the drive plate 211. Both sliders 223 are fixed to the arc-shaped grippers 224. The two grippers 224 are joined to form an annular shape. The grippers 224 can be locked in the annular groove 225, which is annularly opened on the outer surface of the piston rod 210. The piston rod 210 can pass through the through hole 226 opened on the drive plate 211.

[0088] When the measuring cylinder 207 corresponding to the piston rod 210 needs to measure the solution or solvent, the cylinder 221 drives the two sliders 223 to slide inward, thereby causing the two grippers 224 to engage in the annular groove 225. At this time, the up-and-down movement of the drive plate 211 will drive the piston rod 210 to move synchronously. Conversely, when the measuring cylinder 207 corresponding to the piston rod 210 does not need to be running, the cylinder 221 drives the two sliders 223 to slide outward, thereby causing the two grippers 224 to separate and no longer engage in the annular groove 225. At this time, the up-and-down movement of the drive plate 211 will not drive the piston rod 210 to move synchronously.

[0089] Through the above method, the various measuring cylinders 207 can be automatically coordinated to jointly measure the predetermined target volume.

[0090] This invention uses two sets of metering units 200 to separately measure the solvent and solute using the methods described above. By eliminating the influence of temperature on volume, the control unit 300 precisely controls the number of times each metering cylinder 207 is drawn, and combined with the precise compensation of the adjusting cylinder 217, high-precision volume superposition is achieved. This ensures the accuracy of both solute and solvent volume measurement, and effectively controls the concentration accuracy of the final prepared acid solution.

[0091] The embodiments described above are not exhaustive, nor do they limit the invention to any specific embodiments. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to effectively utilize the invention and its modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. An automated hydrolysis acid preparation device, characterized in that, include: Preparation unit (100) for mixing solvent and solute to prepare acid solution; Two sets of metering units (200), one set of metering units (200) is used to measure the volume of solute, and the other set of metering units (200) is used to measure the volume of solvent. Each set of metering units (200) includes a material bin (203) for storing materials, multiple metering cylinders (207) with multiple volumes in a multiple relationship, an adjusting cylinder (217) for micro-volume compensation of materials, and a drive mechanism for driving the reciprocating motion of the piston inside the metering cylinder (207) and the adjusting cylinder (217). Each of the metering cylinders (207) has a piston rod (210) connected to the piston. The driving mechanism includes a driving plate (211) threadedly connected to the screw (216). The driving plate (211) is also provided with a snap-fit ​​part (220) that cooperates with each piston rod (210). The screw (216) is connected to the output end of the drive motor (215). The volume of the regulating cylinder (217) is the same as that of the smallest volume measuring cylinder (207). One end of the regulating cylinder (217) is fixedly connected to the top of the smallest volume measuring cylinder (207). The piston inside the regulating cylinder (217) is fixedly connected to the output end of the telescopic electric cylinder (218). The metering unit (200) controls the corresponding snap-fit ​​part (220) of each metering cylinder (207) to complete the snap-fit ​​for the corresponding number of times by combining the number of times of measurement of different metering cylinders (207), and achieves accurate measurement of the target volume by combining the compensation of the adjusting cylinder (217). The control unit (300) is connected to the preparation unit (100) and the metering unit (200) by signal. It is used to receive the target volume value input by the user, control the coordinated action of each metering cylinder (207) and the regulating cylinder (217) in the metering unit (200), and transport the measured material to the preparation unit (100).

2. The automated hydrolysis acid preparation device according to claim 1, characterized in that, The metering unit (200) also includes a housing (201), inside which is a mounting frame (202), on the top of which is a material box (203), a feeding pipe (204) connected to one side of the material box (203), a circulation pipe (205) provided on the side of the material box (203), and multiple electromagnetic three-way valves (206) connected to the bottom of the material box (203). Each of the electromagnetic three-way valves (206) is connected to the corresponding metering cylinder (207). The metering cylinder (207) is mounted on the mounting frame (202) via the first fixing plate (208). The electromagnetic three-way valve (206) is also connected to the discharge pipe (209). The drive plate (211) is slidably engaged with the guide post (213) via the guide ring (212), and the guide post (213) is mounted on the second fixed plate (214).

3. The automated hydrolysis acid preparation device according to claim 2, characterized in that, The volumes of the plurality of measuring cylinders (207) decrease sequentially in the order of arrangement, and the volume of the larger of two adjacent measuring cylinders (207) is twice the volume of the smaller one; The other end of the adjusting cylinder (217) is fixedly installed on the first fixing plate (208); The telescopic electric cylinder (218) is fixedly installed on the second fixed plate (214).

4. The automated hydrolysis acid preparation device according to claim 2, characterized in that, The preparation unit (100) includes an acid mixing cylinder (102) and a head (101) fixedly installed on the top of the acid mixing cylinder (102). A feed pipe (111) for conveying materials is connected to the head (101). The acid mixing cylinder (102) is fitted with an annular temperature regulating chamber (104). The bottom of the temperature regulating chamber (104) is fixedly connected to the inlet pipe (106), and the top is fixedly connected to the outlet pipe (105).

5. The automated hydrolysis acid preparation device according to claim 4, characterized in that, The temperature control chamber (104) is wrapped with an annular insulation layer (107), and the insulation layer (107) is filled with insulation material. A valve (103) is installed at the bottom of the acid mixing cylinder (102), and the valve (103) is connected to the inside of the acid mixing cylinder (102).

6. The automated hydrolysis acid preparation device according to claim 4, characterized in that, A stirring motor (108) is installed on the top of the end cap (101). The output end of the stirring motor (108) is connected to the stirring shaft (110) via a gearbox (109). The stirring shaft (110) extends into the acid mixing cylinder (102).

7. The automated hydrolysis acid preparation device according to claim 4, characterized in that, An inclined plate (112) is installed at the bottom of the feed pipe (111). The inclined plate (112) is inclined from top to bottom and from the axis of the acid mixing cylinder (102) in all directions. The lower end of the inclined plate (112) is close to the inner wall of the acid mixing cylinder (102).

8. The automated hydrolysis acid preparation device according to claim 5, characterized in that, A thermocouple (113) is installed on the end cap (101), the probe of the thermocouple (113) passes through the end cap (101) and extends to the bottom of the acid mixing cylinder (102), and the thermocouple (113) is signal connected to the control unit (300). A liquid level pipe (114) is installed on the outside of the insulation layer (107). The liquid level pipe (114) is a transparent U-shaped pipe. Its first end is connected to the bottom of the acid mixing cylinder (102), and its second end is connected to the outside. The second end is higher than the top of the acid mixing cylinder (102).

9. The automated hydrolysis acid preparation device according to claim 2, characterized in that, The snap-fit ​​part (220) includes a cylinder (221), which is fixedly installed on the lower surface of the drive plate (211). The output end of the cylinder (221) is drivenly connected to two sliders (223). The lower surface of the drive plate (211) is also fixed with a slide rail (222), and the two sliders (223) are slidably disposed inside the slide rail (222); Each slider (223) is fixed with an arc-shaped gripper (224). When the two grippers (224) are in the docking state, they are inserted into the annular groove (225) opened on the outer surface of the piston rod (210). The piston rod (210) passes through the through hole (226) opened on the drive plate (211). The cylinder (221) is signal-connected to the control unit (300).

10. The automated hydrolysis acid preparation device according to claim 4, characterized in that, The discharge pipe (209) is connected to the feed pipe (111) via a pipeline; The circulation pipe (205) of the metering unit (200) is used to transport the heat transfer medium, and the outlet pipe (105) and inlet pipe (106) are connected to the circulation system of the heat transfer medium.

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