A defoaming machine system

Abstract

The application provides a defoaming machine system, relates to the field of slurry defoaming, and comprises a mobile electric cabinet assembly and a mobile support assembly. The mobile electric cabinet assembly comprises an electric cabinet, and the lower end of the electric cabinet is connected with a sliding seat one. The mobile support assembly comprises a sliding seat two, and the sliding seat two is detachably connected with the sliding seat one through a positioning assembly. The main body of the defoaming machine is installed on the sliding seat two. The sliding seat one comprises a seat body one, and an extension part is arranged on the front side of the seat body one. A slope block and a guide positioning block are arranged on the upper end of the extension part in the front-rear direction at intervals. The upper end of the slope block is a slope with a low front end and a high rear end. The guide positioning block and the slope block form a clamping groove. The sliding seat two comprises a seat body two, and two groups of guide wheels are arranged on the lower end of the seat body two at intervals. The positioning assembly comprises a cover body, the cover body is arranged on the upper end of the seat body one, the positioning block is slidably penetrated through the seat body one in the up-down direction, and a spring is connected between the positioning block and the cover body. The electric cabinet and the main body of the defoaming machine are independently moved, quickly and reliably connected, and can be adapted to the scene of multi-station switching of a lithium battery production line.

Description

Technical Field

[0001] This invention relates to the field of slurry defoaming technology, specifically a defoaming machine system. Background Technology

[0002] In the production process of lithium batteries, the manufacturing of electrode sheets plays a crucial role. The process involves steps such as slurry preparation, coating, drying, rolling, and cutting. The coating effect directly determines the quality of the finished battery cell and affects various performance indicators of the lithium battery. After the coating slurry is prepared, it needs to be defoamed before coating. The defoaming effect directly affects the uniformity of the electrode surface density and the performance of the battery cell.

[0003] Existing slurry defoaming devices, such as the aerogel slurry vacuum defoaming and dispersion device (patent publication number CN121178006A), have the following problems: the control components and the defoaming-related mechanisms are fixed together as a whole, and it is impossible to adjust their relative positions as needed to meet different usage space requirements. Summary of the Invention

[0004] This invention provides a defoaming machine system to solve the technical problems mentioned in the background section.

[0005] To solve the above-mentioned technical problems, the present invention discloses a defoaming machine system, comprising:

[0006] A mobile electrical cabinet assembly, comprising an electrical cabinet, with a slide connected to the lower end of the cabinet;

[0007] The movable support assembly includes a slide two, which is detachably connected to a slide one via a positioning component; the defoamer body is mounted on the slide two.

[0008] The slide includes: a seat body, an extension on the front side of the seat body, and a caster connected to the seat body; the upper end of the extension is provided with inclined blocks and guide positioning blocks at intervals along the front-back direction, the upper end of the inclined blocks is an inclined surface that is lower in the front and higher in the back; a groove is formed between the guide positioning blocks and the inclined blocks.

[0009] The slide block two includes: a seat body two, a caster two connected to the lower end of the seat body two, and two sets of guide wheels spaced apart on the left and right sides of the lower end of the seat body two;

[0010] The positioning components include:

[0011] The cover is located at the upper end of the base.

[0012] The positioning block has a lower part that slides through the base body in the vertical direction, and a spring connects the positioning block to the cover.

[0013] When slide one and slide two are docked: the guide wheels of the two sets of guide wheels contact the left and right sides of the guide positioning block respectively, and the rollers contact the upper end of the inclined block before docking.

[0014] Preferably, the lower end of the extension is also connected to a caster; the guide wheel assembly includes a number of guide wheels spaced apart front and rear.

[0015] Preferably, a roller is provided at the lower part of the positioning block, with the lower end of the roller located below the lower end of the positioning block; inside the positioning block, a spring is connected between the inner wall of the upper end of the cover and the positioning block.

[0016] Preferably, the cover is provided with positioning grooves on opposite sides, and the lower end of the cover is placed on the upper end of the base.

[0017] The positioning components also include:

[0018] A positioning mounting plate is installed on the upper end of the base body;

[0019] Both sets of limiting components are connected to the upper end of the positioning mounting plate, and the two sets of limiting components are located on opposite sides of the cover. The limiting components include:

[0020] Mounting block, the mounting block is mounted on the upper end of the positioning mounting plate;

[0021] A limiting rod is movably connected to the mounting block, and one end of the limiting rod can extend into or out of the positioning groove.

[0022] Preferably, the main body of the defoamer includes:

[0023] The storage tank is mounted on the slide block two via a bracket. The storage tank is connected to an inlet pipe, and the outlet of the storage tank is connected to an outlet pipe, which is connected to the inlet of the discharge power device.

[0024] An electric motor is mounted on the storage tank, and a rotating shaft is installed at the lower end of the motor. A defoaming disc is installed on the rotating shaft inside the storage tank.

[0025] A vacuum tube is provided, with its inlet end connected to the storage tank and its outlet end connected to a vacuum pump.

[0026] Preferably, it also includes a differential pressure transmitter, which is connected to a differential pressure level connector one and a differential pressure level connector two. The differential pressure level connector one is installed on the upper part of the inner wall of the storage tank, and the differential pressure level connector two is installed on the lower part of the inner wall of the storage tank.

[0027] The differential pressure transmitter is connected to differential pressure level connector one and differential pressure level connector two through pressure guide pipes. The differential pressure transmitter is used to detect the pressure difference between the upper gas phase pressure and the lower liquid phase pressure in the storage tank.

[0028] Preferred options also include:

[0029] Viscosity testing device: used to detect the pre-test viscosity of slurry at different slurry temperatures within the temperature range inside the storage tank, and to construct a slurry temperature-pre-test slurry viscosity model;

[0030] Temperature detection device: used to detect the temperature of slurry inside the storage tank;

[0031] It also includes: a defoaming control device electrically connected to the viscosity detection device and the temperature detection device respectively; the defoaming control device includes:

[0032] Bubble Analysis Module: Used to determine the initial bubble content coefficient based on the actual differential pressure detected by the differential pressure transmitter under the initial preparation state; the initial preparation state is after adding a preset amount of slurry.

[0033] Viscosity analysis module: used to determine the initial viscosity characteristic coefficients based on the temperature detection results of the temperature detection device and the slurry temperature-pre-test slurry viscosity model under the initial preparation state;

[0034] Vacuum pump parameter determination module: used for:

[0035] The initial vacuum control parameters are determined based on the initial bubble content coefficient, initial viscosity characteristic coefficient, target feed flow rate, and feed flow rate range-bubble content coefficient-viscosity characteristic coefficient-vacuum pump control parameter model.

[0036] When the actual average pressure difference change rate is greater than or equal to the preset pressure difference change rate, the initial vacuum control parameter is determined as the first vacuum control parameter; when the actual average pressure difference change rate is less than the preset pressure difference change rate, the initial vacuum control parameter is corrected to obtain the first vacuum control parameter.

[0037] Control module: After determining the initial vacuum control parameters, it controls the vacuum pump to work for one duration based on the initial vacuum control parameters, and controls the pressure transmitter to detect the pressure difference multiple times within one duration to determine the actual average pressure difference change rate.

[0038] Preferably, the control module also controls the vacuum pump to work for two hours based on the first vacuum control parameter, and within the two hours, controls the actual flow rate of the feed pipe to be the target feed flow rate, and controls the pressure transmitter to detect the pressure difference multiple times and the temperature detection device to detect the temperature multiple times within the two hours.

[0039] The defoaming control device also includes:

[0040] The building module is used to construct working time-pressure difference fitting lines and temperature sequences based on the pressure difference and temperature detected over time.

[0041] Differential Pressure Analysis Module: Used to divide the working time-differential pressure fitting line into the adaptation process segment and the main defoaming process segment, and to determine the average differential pressure decrease rate and equivalent differential pressure corresponding to the working time-differential pressure fitting line of the main defoaming process;

[0042] Early warning module: Used to issue an early warning when either the rate of decrease of the average differential pressure or the equivalent differential pressure does not meet the corresponding requirement range;

[0043] Correction module: When the warning module issues a warning, it determines the target vacuum control parameter by combining the average pressure difference decrease rate, the equivalent pressure difference, and the viscosity range corresponding to the temperature subsequence of the main defoaming process; when the warning module does not issue a warning, the first vacuum control parameter is the target vacuum control parameter.

[0044] After a duration of two hours, the control module controls the vacuum pump to continue operating at the target vacuum control parameters and controls the actual flow rate of the feed pipe as the target feed flow rate to defoam the current slurry.

[0045] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] Through the mechanical guiding design of the guide wheel assembly and inclined block, slide one and slide two can automatically complete the horizontal and vertical positioning, achieving rapid docking.

[0048] The double-fixing structure, which combines spring-driven positioning block reset with limit rod locking, can withstand the vibration interference of motor and vacuum pump during defoaming operations, and avoids unstable electrical control signals caused by component loosening.

[0049] The design of the electrical cabinet and the defoaming machine is independently movable and can be quickly connected, which can be adapted to the scenario of multi-station switching and compact space in lithium battery production lines.

[0050] Differential pressure transmitters can monitor differential pressure changes in bubble content in real time, replacing the lag mode of traditional timed sampling and detection. When the bubble content exceeds the standard, the vacuum level or the rotary table speed can be adjusted immediately. Attached Figure Description

[0051] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0052] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0053] Figure 2 A schematic diagram of the structure after the mobile support assembly and the main body of the defoamer are installed;

[0054] Figure 3 This is a schematic diagram of the structure of the mobile power cabinet assembly of the present invention;

[0055] Figure 4 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0056] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B;

[0057] Figure 6 This is a schematic diagram of the positioning component of the present invention;

[0058] Figure 7 for Figure 6 A bottom view of the positioning component in the image;

[0059] Figure 8 for Figure 7 Sectional view of AA;

[0060] Figure 9 This is a top view of the storage tank of the present invention;

[0061] Figure 10 for Figure 9 CC section view.

[0062] In the diagram: 1. Electrical cabinet; 2. Slide 1; 21. Base 1; 22. Extension; 23. Caster 1; 24. Guide positioning block; 25. Inclined block; 251. Inclined surface; 26. Slot; 3. Slide 2; 31. Base 2; 32. Caster 2; 33. Guide wheel; 4. Positioning assembly; 41. Cover; 411. Positioning groove; 42. Positioning block; 43. Spring; 44. Roller; 45. 46. ​​Positioning mounting plate; 47. Mounting block; 5. Limiting rod; 6. Defoamer body; 7. Storage tank; 8. Motor; 9. Vacuum tube; 10. Discharge pipe; 11. Rotary shaft; 12. Defoaming turntable; 13. Differential pressure transmitter; 14. Differential pressure level connector 1; 15. Differential pressure level connector 2; 16. Discharge power unit; 17. Bracket; 18. Feed pipe; 19. Pressure guide pipe. Detailed Implementation

[0063] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0064] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0065] The present invention provides the following embodiments:

[0066] Example 1: This embodiment of the invention provides a defoaming machine system, such as... Figures 1-10 As shown, it includes:

[0067] A mobile electrical cabinet assembly, comprising an electrical cabinet 1, with a slide 2 connected to the lower end of the electrical cabinet 1;

[0068] The movable support assembly includes a second slide 3, which is detachably connected to a first slide 2 via a positioning component 4; the defoamer body 5 is mounted on the second slide 3.

[0069] The slide block 2 includes: a seat body 21, an extension 22 provided on the front side of the seat body 21, and a caster 23 connected to the seat body 21; the upper end of the extension 22 is provided with inclined blocks 25 and guide positioning blocks 24 at intervals along the front-back direction, the upper end of the inclined blocks 25 is an inclined surface 251 with the front lower and the back higher; a groove 26 is formed between the guide positioning blocks 24 and the inclined blocks 25;

[0070] The slide block 2 3 includes: a seat body 2 31, a caster 2 32 connected to the lower end of the seat body 2 31, and two sets of guide wheels spaced apart on the left and right sides at the lower end of the seat body 2 31;

[0071] Positioning component 4 includes:

[0072] Cover 41, cover 41 is set on the upper end of base 21;

[0073] Positioning block 42, the lower part of positioning block 42 slides through the base 21 in the vertical direction, and a spring 43 connects the positioning block and the cover 41.

[0074] When slide block 1 2 and slide block 2 3 are docked: the guide wheels 33 of the two sets of guide wheels contact the left and right sides of the guide positioning block 24 respectively, and the rollers 44 contact the upper end of the inclined block 25 before docking.

[0075] The lower end of the extension 22 is also connected to a caster 23; the guide wheel assembly includes a number of guide wheels 33 spaced at intervals.

[0076] The positioning block 42 has a roller 44 at its lower part, with the lower end of the roller 44 located below the lower end of the positioning block 42; the upper part of the positioning block 42 is slidably connected to the cover 41 along the vertical direction, and a spring 43 is connected between the inner wall of the upper end of the cover 41 and the positioning block 42.

[0077] The cover 41 is provided with positioning grooves 411 on opposite sides, and the lower end of the cover 41 is placed on the upper end of the base 21.

[0078] Positioning component 4 also includes:

[0079] Positioning mounting plate 45 is installed on the upper end of the base body 21;

[0080] Both sets of limiting components are connected to the upper end of the positioning mounting plate 45, and the two sets of limiting components are located on opposite sides of the cover 41. The limiting components include:

[0081] Mounting block 46, which is mounted on the upper end of the positioning mounting plate 45;

[0082] A limiting rod 47 is movably connected to the mounting block 46, and one end of the limiting rod 47 can extend into or out of the positioning groove 411.

[0083] The main body 5 of the defoamer includes:

[0084] Storage tank 51 is mounted on slide 3 via bracket 511. Storage tank 51 is connected to feed pipe 512 and discharge pipe 54 is connected to discharge port of storage tank 51. Discharge pipe 54 is connected to feed port of discharge power device 510.

[0085] Motor 52 is mounted on storage tank 51. A rotating shaft 55 is mounted on the lower end of motor 52. A defoaming rotating disk 56 is installed on the rotating shaft 55 inside storage tank 51.

[0086] Vacuum tube 53, the inlet end of which is connected to the storage tank 51, and the outlet end of which is connected to the vacuum pump.

[0087] It also includes a differential pressure transmitter 57, which is connected to a differential pressure level connector 1 58 and a differential pressure level connector 2 59. The differential pressure level connector 1 58 is installed on the upper part of the inner wall of the storage tank 51, and the differential pressure level connector 2 59 is installed on the lower part of the inner wall of the storage tank 51.

[0088] Differential pressure transmitter 57 is connected to differential pressure level connector 1 58 and differential pressure level connector 2 59 through pressure guide pipe 513. Differential pressure transmitter 57 is used to detect the pressure difference between the upper gas phase pressure and the lower liquid phase pressure in storage tank 51.

[0089] The working principle of the above technical solution is as follows:

[0090] The sliding block 2 (with casters) of the mobile electrical cabinet assembly and the sliding block 3 (with casters) of the mobile support assembly can move independently. When the mobile electrical cabinet assembly and the mobile support assembly approach each other, the guide wheel group of the sliding block 3 will first contact the left and right sides of the guide positioning block 24 of the sliding block 2, achieving initial horizontal alignment. As the sliding block 3 continues to approach, the roller 44 contacts the inclined surface 251 of the inclined block 25 of the sliding block 25, which is lower at the front and higher at the back. As it moves, the roller 44 slides upward along the inclined surface 251, simultaneously pushing the positioning block 42 upward to compress the spring 43, completing the pre-positioning in the vertical direction. When the roller 44 reaches the slot 26, the positioning block 42 is reset under the action of the spring 43, and the lower part of the roller 44 is inserted into the slot 26 of the sliding block 2. At the same time, the limiting rod 47 is inserted into the positioning groove 411 of the cover 41 and clamps the positioning block 42, achieving rigid locking of the two sets of moving components and completing the docking.

[0091] When defoaming is required, the slurry enters the defoaming turntable 56 through the feed pipe 512. The defoaming turntable 56 rotates at high speed driven by the motor 52, throwing the slurry solution onto the inner wall of the storage tank 51. Then, the slurry flows down the inner wall of the storage tank 51 under the action of gravity. At this time, the storage tank 51 is evacuated through the vacuum tube 53. The bubbles in the slurry burst under the action of vacuum, and the gas is discharged through the vacuum tube 53, thus achieving vacuum defoaming.

[0092] Differential pressure transmitter 57 detects the pressure difference between the upper gas phase pressure and the lower liquid phase pressure in storage tank 51 through differential pressure level connector 1 58 and differential pressure level connector 2 59. It realizes online monitoring of bubble content by utilizing the physical relationship that "the higher the bubble content, the lower the liquid phase density, and the lower the lower pressure".

[0093] The beneficial effects of the above technical solution are as follows:

[0094] Through the mechanical guiding design of the guide wheel assembly and inclined block 25, slide 1 2 and slide 2 3 can automatically complete the horizontal and vertical positioning and achieve rapid docking.

[0095] The double fixing structure, which combines the spring 43 driving the positioning block 42 to reset and the limit rod 47 to lock, can withstand the vibration interference of the motor 52 and vacuum pump during defoaming operations, and avoids the instability of electrical control signals caused by component loosening.

[0096] The design of the independent movement and quick docking of the electrical cabinet 1 and the defoaming machine body 5 can adapt to the scenario of multi-station switching and compact space in lithium battery production lines.

[0097] The differential pressure transmitter 57 can monitor the changes in bubble content in real time, replacing the lag mode of traditional timed sampling detection. When the bubble content exceeds the standard, the vacuum level or the rotary table speed can be adjusted immediately.

[0098] Example 2, based on Example 1, further includes:

[0099] Viscosity detection device: used to detect the pre-test viscosity of slurry at different slurry temperatures within the temperature range inside the storage tank, and to construct a slurry temperature-pre-test slurry viscosity model;

[0100] Temperature range inside the storage tank: This refers to the actual temperature range of the slurry that may occur inside the storage tank during the defoaming process.

[0101] First, select slurry samples (selected from different locations), adjust the sample temperature at multiple temperature points within the temperature range inside the storage tank, and detect the pre-test viscosity at the corresponding temperature to construct a slurry temperature-pre-test slurry viscosity model (which can be a mapping table).

[0102] Temperature detection device: used to detect the temperature of slurry inside the storage tank;

[0103] It also includes: a defoaming control device electrically connected to the viscosity detection device and the temperature detection device respectively; the defoaming control device includes:

[0104] Bubble Analysis Module: Used to determine the initial bubble content coefficient based on the actual differential pressure detected by the differential pressure transmitter in the initial preparation state; the initial preparation state is after adding a preset amount of slurry (initial preparation state: adding the minimum allowable reference slurry amount (e.g., 15L, the upper limit before vacuum chamber startup) to the storage tank, this amount needs to match the detection representativeness of the actual volume of the storage tank) is mainly used to compare the initial bubble content coefficient.

[0105] The pressure difference is the difference between the upper gas phase pressure and the lower liquid phase pressure inside storage tank 51.

[0106] When the slurry contains air bubbles, the air bubbles will reduce the actual density of the liquid phase (the density of air bubbles is much smaller than that of the slurry itself): if the air bubble content is higher, the actual effective mass of the liquid phase at the same height will be smaller, and the pressure of the lower liquid phase will be lower; at this time, the difference between the pressure of the lower liquid phase and the pressure of the upper gas phase will decrease accordingly.

[0107] ;

[0108] The maximum allowable bubble volume fraction for the process entering the storage tank (the upper limit of acceptable bubble content in the slurry as specified in production). for The corresponding pressure difference (i.e., when the bubble content reaches the maximum allowable value) (actual pressure difference at the time) The baseline pressure difference when there are no air bubbles (referring to the pressure difference detected under the same preset amount when there are no air bubbles in the current slurry).

[0109] The actual differential pressure detected by the differential pressure transmitter in the initial preparation state; This is the initial bubble content coefficient;

[0110] Viscosity analysis module: used to determine the initial viscosity characteristic coefficients based on the temperature detection results of the temperature detection device and the slurry temperature-pre-test slurry viscosity model under the initial preparation state;

[0111] Viscosity characteristic coefficient = viscosity corresponding to the temperature detection device result in "slurry temperature - pre-tested slurry viscosity model" ÷ preset viscosity;

[0112] The viscosity corresponding to the temperature detection device in the "slurry temperature - pre-tested slurry viscosity model" is recorded as b.

[0113] Vacuum pump parameter determination module: used to determine initial vacuum control parameters (such as the pumping speed of the vacuum pump) based on the initial bubble content coefficient, initial viscosity characteristic coefficient, target feed flow rate and feed flow rate range-bubble content coefficient-viscosity characteristic coefficient-vacuum pump control parameter model.

[0114] Target feed flow rate: This is the planned rate at which slurry is added to the storage tank during production (in liters per minute), representing the pace of subsequent feed.

[0115] Under different feed flow rates, different bubble content coefficients, and different viscosity characteristic coefficients, test the corresponding qualified vacuum pump control parameters (such as pumping speed), and organize the correspondence between these operating parameters and vacuum pump parameters into a mathematical model (or algorithm model). The mathematical model can be a correlation table.

[0116] The core criteria for judging qualified vacuum pump control parameters are: being able to control the bubble content in the slurry within the range allowed by the process; not causing slurry splashing or excessive degassing (such as damaging the slurry composition) due to excessively fast pumping, nor causing bubble residue due to excessively slow pumping; and being compatible with the target feed flow rate (the pumping rate needs to be increased accordingly when the feed is fast to avoid the accumulation of bubbles brought in by the new feed).

[0117] Control module: After determining the initial vacuum control parameters, it controls the vacuum pump to work for a duration of one (e.g., 1 to 5 minutes) based on the initial vacuum control parameters, and controls the pressure transmitter to repeatedly detect the pressure difference between the upper gas phase pressure and the lower liquid phase pressure in the storage tank 51 within the duration of one to determine the actual average pressure difference change rate (the total pressure difference change within the duration of one is divided by the duration of one to obtain the average degree of pressure difference change per unit time).

[0118] The vacuum pump parameter determination module is also used for:

[0119] When the actual average pressure difference change rate is greater than or equal to the preset pressure difference change rate, the initial vacuum control parameter is determined as the first vacuum control parameter; when the actual average pressure difference change rate is less than the preset pressure difference change rate, the initial vacuum control parameter is corrected to obtain the first vacuum control parameter.

[0120] Differential pressure deviation coefficient = (preset differential pressure change rate - average differential pressure change rate) ÷ preset differential pressure change rate;

[0121] First vacuum control parameter = initial vacuum control parameter × (1 + differential pressure deviation coefficient × target feed parameter × vacuum correction coefficient ÷ rated feed parameter);

[0122] Rated feed parameters, such as rated feed flow rate;

[0123] Preset differential pressure change rate: This is the average differential pressure change rate benchmark value corresponding to achieving the defoaming efficiency under benchmark conditions including rated feed flow rate, standard initial bubble content, standard initial viscosity, etc. In actual application, this benchmark value will be adjusted according to the ratio of the current target feed flow rate to the rated feed flow rate (the larger the flow rate, the higher the preset value) to adapt to the defoaming requirements under the current feed rhythm.

[0124] Baseline operating conditions: The actual production batch data of a certain stable and qualified production batch of this type of slurry is directly selected to determine the baseline operating conditions (including rated feed flow rate, standard initial bubble content, and standard initial viscosity).

[0125] The vacuum correction coefficient (which can be 0.7 to 1.3) is an adjustment coefficient determined based on the actual production experience / experimental data of the current slurry. The core is to match the correction range of the slurry characteristics with the vacuum pump parameters. Usually, in multiple batches of production or multiple experiments of the slurry, the correspondence between the pressure difference deviation coefficient, feed parameters and vacuum pump parameter correction effects is tested, and finally a fixed coefficient that can make the corrected parameters stably meet the standards is selected.

[0126] The beneficial effects of the above technical solution are as follows:

[0127] By inputting multiple dimensions such as the initial bubble content coefficient, initial viscosity characteristic coefficient, and target feed flow rate, the determination of the initial parameters of the vacuum pump is no longer a general value, but a precise match with the current batch of slurry state and production rhythm; and combined with the real-time feedback of the differential pressure change rate, the parameter deviation can be dynamically calibrated to ensure that the defoaming effect always conforms to the process.

[0128] In traditional processes, the determination of initial control parameters for the vacuum pump relies entirely on manual experience. This lacks the ability to quantify the impact of initial bubble content on defoaming load and lacks correlation with slurry state. Often, only general intermediate values ​​are selected to start the equipment, resulting in insufficient matching between initial parameters and actual operating conditions (e.g., when the actual initial bubble content is much higher than expected, the defoaming capacity of general parameters is completely insufficient to cover the load). Even subsequent adjustments are often delayed, leading to bubble accumulation and process fluctuations. This solution, however, achieves a precise mapping between initial operating conditions, defoaming load, slurry state, and initial parameters. It ensures that the vacuum pump is precisely adapted to the defoaming requirements of the current batch from the start-up stage, avoiding the risk of delayed passive adjustments from the outset.

[0129] In Example 3, based on Example 2, the control module also controls the vacuum pump to work for a duration of two based on the first vacuum control parameter (which starts after the first vacuum control parameter is determined above), and within the duration of two, controls the actual flow rate of the feed pipe to be the target feed flow rate, and controls the pressure transmitter to detect the pressure difference multiple times and the temperature detection device to detect the temperature multiple times within the duration of two.

[0130] The defoaming control device also includes:

[0131] The building module is used to construct a working time-pressure difference fitting line (the horizontal axis represents the detection time within the two-time period, and the vertical axis represents the pressure difference corresponding to the horizontal axis) and a temperature sequence (a set of temperature data detected at time intervals (e.g., every 1 minute) in sequence, covering the temperature changes of both the adaptation and main defoaming processes) based on the pressure difference and temperature detected in the two-time period two detections.

[0132] Differential Pressure Analysis Module: Used to divide the working time-differential pressure fitting line into the adaptation process segment and the main defoaming process segment, and to determine the average differential pressure decrease rate and equivalent differential pressure corresponding to the working time-differential pressure fitting line of the main defoaming process;

[0133] Early warning module: Used to issue an early warning when either the rate of decrease of the average differential pressure or the equivalent differential pressure does not meet the corresponding requirement range;

[0134] Correction module: When the warning module issues a warning, it determines the target vacuum control parameter by combining the average pressure difference decrease rate, the equivalent pressure difference, and the maximum value of the viscosity range corresponding to the temperature subsequence of the main defoaming process; when the warning module does not issue a warning, the first vacuum control parameter is the target vacuum control parameter.

[0135] The maximum value of the viscosity range corresponding to the temperature subsequence of the main defoaming process: Each temperature in the temperature subsequence of the main defoaming process is determined based on the slurry temperature-pre-test slurry viscosity model to determine the corresponding pre-test viscosity, and the maximum value of all pre-test viscosities corresponding to this temperature subsequence is determined, which is "the maximum value of the viscosity range corresponding to the temperature subsequence of the main defoaming process".

[0136] Average pressure drop rate: Divide the main defoaming process into multiple continuous sub-processes of equal duration according to the time dimension (e.g., each sub-process is 1 to 3 minutes). Calculate the pressure drop rate in each sub-process (calculation formula: sub-process pressure drop rate = (sub-process initial pressure drop - sub-process termination pressure drop) ÷ sub-process duration). Then, take the arithmetic mean of the pressure drop rates of all sub-processes. The final value is the average pressure drop rate.

[0137] The average pressure difference of the last subprocess is the equivalent pressure difference;

[0138] The definition of b is given in Example 2.

[0139] After a duration of two hours, the control module controls the vacuum pump to continue operating at the target vacuum control parameters and controls the actual flow rate of the feed pipe as the target feed flow rate to defoam the current slurry.

[0140] Target pressure difference: The pre-set "endpoint pressure difference standard" that the main defoaming process needs to achieve, usually the typical pressure difference value of the same type of slurry under qualified defoaming effect (determined by historical process data or experimental calibration); Endpoint: The absolute value of the slope falls into the stable range allowed by the process (e.g., ≤0.5kPa / min) and is maintained for more than 2 minutes;

[0141] Theoretical pressure difference reduction rate: This is a pre-set standard rate at which the pressure difference decreases over time during the main defoaming process. It is obtained by statistical analysis of historical defoaming data of the same type of slurry under standard operating conditions (standard viscosity, target feed flow rate).

[0142] The viscosity correction index (with a value of 0.9~1.3) is an empirical coefficient obtained through statistical fitting based on historical defoaming process data of similar slurries.

[0143] Duration 2: This is a complete "parameter adaptation + main defoaming" time cycle, which includes two sub-processes: the "adaptation process segment" and the "main defoaming process segment".

[0144] Adaptation process stage: After the vacuum pump is started with the first vacuum control parameter, it is initially matched with the current dynamic working conditions of the slurry (i.e., under the target feed flow rate; within two hours, the motor speed can be the historical defoaming qualified speed of the same slurry corresponding to the target feed flow rate). During this stage, the pressure difference usually fluctuates greatly (such as rapid drop or small oscillation), which is the break-in stage of parameters and working conditions.

[0145] Main defoaming process segment: This is the remaining time after the adaptation process segment. It corresponds to the stage where the vacuum pump parameters and dynamic operating conditions have been initially matched and the defoaming process is progressing steadily. The pressure difference changes relatively regularly during this stage, which is the core range for evaluating the defoaming effect.

[0146] The adaptation process begins at the start time of duration two; the adaptation process ends at the time point when the slope of the fitted line first enters a sustained and stable unidirectional change (i.e., the turning point when the pressure difference change becomes regular).

[0147] The beneficial effects of the above technical solution are as follows:

[0148] The main defoaming process is broken down into continuous sub-processes of equal duration. By using the calculation logic of the sub-process pressure difference decrease rate minus the average pressure difference decrease rate, the interference of the adaptation stage (with large pressure difference fluctuations) is filtered out, and the true efficiency of the main defoaming stage is accurately extracted. At the same time, the average pressure difference of the last sub-process is used as the equivalent pressure difference to directly lock the gas-liquid separation state at the end of the defoaming process, avoiding the fuzzy judgment of the end effect by the average pressure difference of the entire process.

[0149] The correction module simultaneously calculates the target vacuum parameters by combining the average pressure drop rate (process efficiency), equivalent pressure difference (endpoint effect), and maximum viscosity range (slurry characteristics). It can simultaneously cope with abnormal working conditions such as slow defoaming rate, excessive endpoint pressure difference, and slurry viscosity fluctuation, ensuring the defoaming effect.

[0150] Example 4, based on any one of Examples 1-3, further includes:

[0151] Slurry testing device: used to test the viscosity and density of the slurry to be entered into storage tank 51;

[0152] Rotation speed detection device: used to detect the rotation speed of the defoaming turntable 56;

[0153] Vibration detection device: used to detect the vibration information (including amplitude) of the defoaming turntable 56;

[0154] A defoaming turntable control device is electrically connected to a slurry detection device, a speed detection device, a vibration detection device, and a motor 52. The defoaming turntable control device includes:

[0155] Module 1: Used to obtain the range of target bubble migration dynamic coefficients for the defoaming turntable;

[0156] The target bubble migration dynamic coefficient range is the range of bubble migration dynamic coefficients that can meet the defoaming effect of the defoaming turntable 56, which is determined based on experiments or historical production data statistics for the same type of slurry. The defoaming effect of the defoaming turntable 56 is met when the bubbles can overcome the viscous resistance of the slurry under the action of centrifugal force during the operation of the turntable, migrate rapidly from the inside of the slurry to the surface of the slurry and detach, so that the residual bubble particle size, bubble content and other indicators of the treated slurry meet the defoaming requirements of the defoaming turntable 56.

[0157] Calculation Module 1: Used to determine the pre-selected rotation speed range based on the detection results of the slurry detection device and the range of the target bubble migration dynamic coefficient of the defoaming turntable 56;

[0158] Bubble migration dynamic coefficient = (slurry density × bubble volume × ... × radius of the rotating disk in circular motion) ÷ (slurry viscosity × debubbling angular velocity × radius of the rotating disk in circular motion × bubble radius).

[0159] (slurry density × bubble volume ×) The centrifugal force of the bubble is (× radius of the rotating disk in circular motion), and the resistance of the bubble in the slurry is (slurry viscosity × debubbling angular velocity × radius of the rotating disk in circular motion × bubble radius).

[0160] "Bubble volume and bubble radius" are batch-specific preset values: before each batch of slurry is fed, these values ​​are obtained through "offline sampling and testing" (taking a sample of the slurry from that batch, using a laser particle size analyzer to detect the bubble size distribution, and calculating the average bubble volume and radius), and are used within the same batch.

[0161] Defoaming control module: First, under the condition that the feed flow rate of the feed pipe 512 is the target feed flow rate, control the working speed of the motor 52 at the median value of the pre-selected speed range for the test duration (the speed test duration is from the start of operation to the addition of the preset amount of slurry).

[0162] When the pressure difference between the upper gas phase pressure and the lower liquid phase pressure in the storage tank 51 is less than the allowable pressure difference (which is the critical pressure difference threshold for achieving the defoaming effect) after the speed test duration (3-5 minutes), and the actual maximum amplitude during the speed test duration is less than the maximum allowable amplitude for defoaming, then the median value of the pre-selected speed range is determined to be the target speed.

[0163] When the pressure difference between the upper gas phase pressure and the lower liquid phase pressure in the storage tank 51 exceeds the allowable pressure difference after the rotation speed test duration (the pressure difference process threshold after the pre-set rotation speed test duration is the pressure difference judgment standard for the defoaming effect to meet the requirements (if the measured pressure difference is less than or equal to the allowable pressure difference, it means that there are few residual bubbles in the slurry and the defoaming effect meets the requirements)), and the actual maximum amplitude during the rotation speed test duration is greater than or equal to the maximum allowable amplitude for defoaming, an alarm will be triggered.

[0164] When the pressure difference between the upper gas phase and the lower liquid phase in the storage tank 51 exceeds the allowable pressure difference after the rotation speed test duration, and the actual maximum amplitude during the rotation speed test duration is less than the maximum allowable amplitude for defoaming (the safety threshold of the pre-set defoaming turntable 56; if the actual maximum amplitude exceeds this value, it indicates a safety risk), first determine the flow amplitude characteristic coefficient and the pressure difference coefficient, and then determine the target rotation speed based on the flow amplitude characteristic coefficient and the pressure difference coefficient; when the current slurry is continuously defoaming, control the actual rotation speed of the motor to the target rotation speed;

[0165] The flow amplitude characteristic coefficient = median of the pre-selected speed range ÷ actual maximum amplitude during the speed test duration; the flow amplitude characteristic coefficient reflects the amplitude state affected by the speed corresponding to the current slurry, and reflects the degree of influence of the speed on equipment vibration under the current slurry characteristics; a larger flow amplitude characteristic coefficient means that the speed has less influence on equipment vibration under the current slurry characteristics (the equipment has stronger vibration resistance).

[0166] Pressure difference coefficient = (Pressure difference between upper gas phase pressure and lower liquid phase pressure in tank 51 after speed test duration - allowable pressure difference) ÷ allowable pressure difference;

[0167] Target speed = median of the pre-selected speed range × (1 + pressure difference coefficient × ... ×Speed ​​gain coefficient).

[0168] An alarm will also be triggered if the value is less than 1.

[0169] The minimum allowable flow amplitude characteristic coefficient is a safety threshold parameter set for the defoaming process. It is the core critical value for judging whether the current equipment vibration state meets the conditions for speed adjustment.

[0170] The speed gain coefficient needs to be obtained through defoaming process experiments of similar slurries (select the same type of slurry, and use the preset speed, pressure difference, and amplitude threshold as a benchmark to test the speed adjustment corresponding to the flow amplitude characteristic coefficient and pressure difference coefficient under different working conditions (i.e., the speed increase or decrease value required to make the pressure difference meet the standard and the amplitude safe), and fit the appropriate correction coefficient through multiple sets of data, which is the speed gain coefficient of this type of slurry). The speed gain coefficient is taken as 0.1 to 0.5.

[0171] The flow amplitude characteristic coefficient reflects "the degree of influence of rotational speed on equipment vibration under the current slurry characteristics". The larger the ratio, the smaller the impact of rotational speed change on vibration (the stronger the equipment's vibration resistance) and the larger the range of rotational speed adjustment that can be supported.

[0172] The beneficial effects of the above technical solution are as follows:

[0173] Based on slurry parameters, bubble parameters, and target flow rate, a suitable pre-selected speed range is pre-locked to ensure that the target speed is quickly determined for the entire solution;

[0174] Based on the feed flow rate locking test condition, and by linking the dynamic relationship between rotation speed and vibration through the flow amplitude characteristic coefficient, the rotation speed adjustment is always matched to the slurry characteristics under the current feed flow rate. When the feed flow rate fluctuates, the flow amplitude characteristic coefficient can reflect the degree of influence of rotation speed on vibration in real time, avoiding insufficient defoaming or excessive equipment vibration caused by flow rate changes under a fixed rotation speed.

[0175] The target rotational speed formula, which combines the flow amplitude characteristic coefficient and the pressure difference coefficient, essentially uses the vibration state associated with the flow rate to dynamically constrain the rotational speed adjustment range: when the flow rate is stable, the rotational speed adjustment range can be appropriately expanded to optimize the defoaming effect; when the flow rate fluctuates, the adjustment range is narrowed through the flow amplitude characteristic coefficient to ensure the stability of equipment operation and achieve a dynamic balance between flow rate, defoaming effect, and equipment safety.

[0176] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A defoaming machine system, characterized by: The utility model relates to a mobile electric cabinet assembly, mobile electric cabinet assembly includes electric cabinet (1), electric cabinet (1) lower end connects slide one (2); Mobile support assembly, mobile support assembly includes slide two (3), and slide two (3) is detachably connected with slide one (2) through positioning assembly (4);Defoaming machine body (5) is installed on slide two (3); Slide one (2) includes: seat body one (21), the front side of seat body one (21) is provided with extension (22), and seat body one (21) is connected with trundle one (23);The upper end of extension (22) is spaced apart along the front and back direction and is provided with inclined surface block (25) and guide positioning block (24), and the upper end of inclined surface block (25) is inclined surface (251) that is low in front and high in back;Form the clamping groove (26) between guide positioning block (24) and inclined surface block (25); Slide two (3) includes: seat body two (31), and seat body two (31) lower end is connected with trundle two (32), and seat body two (31) lower end is spaced apart and is provided with two groups of guide wheel groups left and right; Positioning assembly (4) includes: Cover body (41), the opposite sides of cover body (41) are provided with positioning groove (411) respectively, and the lower end of cover body (41) is placed on the upper end of seat body one (21); Positioning block (42), the lower part of positioning block (42) is slid along the up and down direction and penetrates seat body one (21), and the spring (43) is connected between positioning block and cover body (41);The lower part of positioning block (42) is provided with gyro wheel (44), and the lower end of gyro wheel (44) is below the lower end of positioning block (42); When slide one (2) and slide two (3) are butted: the guide wheel (33) of two groups of guide wheel groups respectively contacts the left and right sides of guide positioning block (24), and gyro wheel (44) contacts the upper end of inclined surface block (25) and then is butt-jointed, when gyro wheel (44) reaches the position of clamping groove (26), positioning block (42) resets under the resilience of spring (43), and the lower part of gyro wheel (44) is clamped into the clamping groove (26) of slide one (2); Positioning mounting plate (45), positioning mounting plate (45) is installed on the upper end of seat body one (21); Two groups of limiting assemblies are all connected on the upper end of positioning mounting plate (45), and the two groups of limiting assemblies are respectively located on the opposite sides of cover body (41), and the limiting assembly includes: Mounting block (46), the mounting block (46) is installed on the upper end of positioning mounting plate (45); Limiting rod (47), the limiting rod (47) is movably connected on the mounting block (46), and one end of the limiting rod (47) can extend into or leave positioning groove (411);At the same time, the limiting rod (47) is inserted into the positioning groove (411) of cover body (41) and clamps positioning block (42), realizes that slide one (2) and slide two (3) are butt-jointed; Defoaming machine body (5) includes: Storage tank (51), and the storage tank (51) is connected with feed pipe (512); Motor (52), the motor (52) is installed on the storage tank (51), and the lower end of motor (52) is installed with rotating shaft (55), and the defoaming rotating disc (56) is arranged on the rotating shaft (55) in the storage tank (51); Vacuum pipe (53), the inlet end of vacuum pipe (53) communicates with the storage tank (51), and the outlet end of vacuum pipe (53) communicates vacuum pump. ​ 2. A defoaming machine system according to claim 1, characterized in that: The extension (22) lower end is also connected with a caster (23); the guide wheel group comprises a plurality of guide wheels (33) arranged at intervals in front and back.

3. The defoaming machine system of claim 1, wherein: The upper part of the positioning block (42) is connected to the cover (41) through sliding up and down, and a spring (43) is connected between the inner wall of the upper end of the cover (41) and the positioning block (42).

4. The defoaming machine system of claim 1, wherein: The discharge pipe (54) is connected to the discharge port of the storage tank (51) and connected to the inlet of the discharge power device (510); the storage tank (51) is installed on the sliding seat two (3) through the support (511).

5. The defoaming machine system of claim 1, wherein: The differential pressure liquid level connector one (58) is installed on the upper part of the inner wall of the storage tank (51), and the differential pressure liquid level connector two (59) is installed on the lower part of the inner wall of the storage tank (51). The differential pressure transmitter (57) is communicated with the differential pressure liquid level connector one (58) and the differential pressure liquid level connector two (59) through the pressure guide pipe (513), and the differential pressure transmitter (57) is used for detecting the pressure difference between the upper gas phase pressure and the lower liquid phase pressure in the storage tank (51).

6. The defoaming machine system of claim 1, wherein: The defoaming machine system further comprises: Viscosity detection device: for detecting the pre-test viscosity of the slurry at different slurry temperatures in the temperature range in the storage tank (51), and constructing a slurry temperature-pre-test slurry viscosity model; Temperature detection device: for detecting the temperature of the slurry in the storage tank (51); Further comprising: a defoaming control device electrically connected with the viscosity detection device and the temperature detection device; the defoaming control device comprises: Bubble analysis module: for determining the initial bubble content coefficient based on the actual pressure difference detected by the differential pressure transmitter (57) in the initial preparation state; the initial preparation state is after adding a preset amount of slurry; Viscosity analysis module: for determining the initial viscosity characteristic coefficient based on the detection result of the temperature detection device in the initial preparation state and the slurry temperature-pre-test slurry viscosity model; Vacuum pump parameter determination module: for determining the initial vacuum control parameter based on the initial bubble content coefficient, the initial viscosity characteristic coefficient, the target feed flow and the feed flow interval-bubble content coefficient-viscosity characteristic coefficient-vacuum pump control parameter model; when the actual average pressure difference change rate is greater than or equal to the preset pressure difference change rate, the initial vacuum control parameter is determined as the first vacuum control parameter; when the actual average pressure difference change rate is less than the preset pressure difference change rate, the initial vacuum control parameter is corrected to obtain the first vacuum control parameter; Control module: for controlling the working time of the vacuum pump based on the initial vacuum control parameter after determining the initial vacuum control parameter, and controlling the pressure transmitter to detect the pressure difference between the upper gas phase pressure and the lower liquid phase pressure in the storage tank (51) multiple times within the time to determine the actual average pressure difference change rate.

7. The defoaming machine system of claim 6, wherein: The control module further controls the working time of the vacuum pump based on the first vacuum control parameter, and controls the actual flow of the feed pipe (512) to be the target feed flow within the time, and controls the pressure transmitter to detect the pressure difference multiple times and the temperature detection device to detect the temperature multiple times within the time; The defoaming control device further comprises: A constructing module is configured to construct a working time-pressure difference fitting line and a temperature sequence based on the pressure difference and the temperature respectively; A pressure difference analyzing module is configured to divide the working time-pressure difference fitting line into an adapting process segment and a main defoaming process segment, and determine an average pressure difference drop rate and an equivalent pressure difference corresponding to the working time-pressure difference fitting line of the main defoaming process; A warning module is configured to give a warning when any of the average pressure difference drop rate and the equivalent pressure difference fails to meet a corresponding requirement range; A correcting module is configured to determine a target vacuum control parameter in combination with the average pressure difference drop rate, the equivalent pressure difference and a viscosity range corresponding to a temperature sub-sequence of the main defoaming process when the warning module gives a warning, and the first vacuum control parameter is the target vacuum control parameter when the warning module does not give a warning.

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