Noise reduction design method and device of dispersion equipment and dispersion equipment

Abstract

The application provides a noise reduction design method and device of a dispersion equipment and the dispersion equipment, and the method comprises the following steps: obtaining device parameters of a reference dispersion equipment and material characteristic parameters of a material, the material characteristic parameters comprising material viscosity and material type; determining working condition parameters based on the device parameters and the material viscosity, the working condition parameters comprising a target rotating speed; determining configuration parameters and flow guide hole parameters based on the working condition parameters, the device parameters and the material characteristic parameters; predicting noise data of an output end of the reference dispersion equipment based on the flow guide hole parameters and the configuration parameters; determining Helmholtz resonance cavity array parameters based on the noise data, the material type and a preset resonance cavity calculation formula; configuring the reference dispersion equipment based on the flow guide hole parameters, the configuration parameters and the Helmholtz resonance cavity array parameters, obtaining a target dispersion equipment, and configuring the target rotating speed as a working rotating speed of the target dispersion equipment. In the application, the dispersion equipment is designed according to the working condition parameters determined based on the material viscosity, and the noise reduction capability is improved.

Description

Technical Field

[0001] This application relates to the field of pulping technology, specifically to a noise reduction design method, apparatus, and dispersion equipment for dispersion equipment. Background Technology

[0002] Dispersion equipment relies on a high-shear dispersion structure composed of a rotor and stator to apply strong shearing, impact, and turbulence to materials, achieving uniform mixing, ultrafine dispersion, and particle size stabilization of powder and liquid phases. It is a key piece of equipment in industries such as new energy battery electrode slurry preparation, high-end coating production, and fine chemical emulsification. However, in existing dispersion equipment, when the stator and rotor rotate relative to each other, vibrations at the blade passing frequency occur between the stator blades and the rotor, generating noise that impacts the environment and operators. Summary of the Invention

[0003] This application provides a noise reduction design method, device, and dispersion equipment for dispersion equipment. The dispersion equipment is designed based on the operating parameters determined by the material viscosity, and noise reduction is achieved from multiple aspects such as noise generation, propagation, and residue, thereby improving noise reduction capability.

[0004] In a first aspect, embodiments of this application provide a noise reduction design method for a distributed device, including: Obtain the device parameters of the reference dispersion equipment and the material characteristic parameters of the material, wherein the material characteristic parameters include the material viscosity and the material type; Operating parameters are determined based on the device parameters and the material viscosity, and the operating parameters include the target rotational speed. Based on the operating parameters, the device parameters, and the material characteristic parameters, configuration parameters and guide hole parameters are determined. The configuration parameters include the rotor tooth slot configuration parameters, the number of stator tooth slots, the spacing distance between the rotor ring and the stator ring, and the volute parameters of the reference dispersion equipment. The guide hole parameters include the number and diameter of the guide holes in the stator of the reference dispersion equipment. The noise data at the output of the reference dispersion device is predicted based on the flow guide parameters and the configuration parameters. The parameters of the Helmholtz resonant cavity array are determined based on the noise data, the material type, and the preset resonant cavity calculation formula. The reference dispersion device is configured based on the flow guide hole parameters, the configuration parameters, and the Helmholtz resonant cavity array parameters to obtain the target dispersion device, and the target rotation speed is configured as the operating rotation speed of the target dispersion device.

[0005] Secondly, embodiments of this application provide a noise reduction design device for a dispersion device, applied to a dispersion device. The dispersion device includes a volute, a rotor and a stator disposed within the volute. The rotor ring has rotor tooth grooves, and the stator ring has stator tooth grooves. The stator ring has guide holes along the circumferential direction of the dispersion device. The device includes: The acquisition unit is used to acquire the device parameters of the reference dispersion equipment and the material characteristic parameters of the material, wherein the material characteristic parameters include the material viscosity and the material type; The first determining unit is configured to determine operating parameters based on the device parameters and the material viscosity, wherein the operating parameters include a target rotational speed. The second determining unit is used to determine configuration parameters and guide hole parameters based on the operating condition parameters, the device parameters, and the material characteristic parameters. The configuration parameters include the rotor tooth slot configuration parameters, the number of stator tooth slots, the spacing distance between the rotor ring and the stator ring, and the volute parameters of the reference dispersion device. The guide hole parameters include the number and diameter of the guide holes in the stator of the reference dispersion device. A prediction unit is used to predict the noise data at the output of the reference dispersion device based on the orifice parameters and the configuration parameters. The calculation unit is used to determine the parameters of the Helmholtz resonant cavity array based on the noise data, the material type, and the preset resonant cavity calculation formula; A configuration unit is used to configure the reference dispersion device based on the flow guide hole parameters, the configuration parameters, and the Helmholtz resonant cavity array parameters, to obtain the target dispersion device, and to configure the target rotation speed as the operating rotation speed of the target dispersion device.

[0006] Thirdly, embodiments of this application provide a dispersion device, including: The dispersion device is obtained by the noise reduction design method of the dispersion device according to any one of the first aspects.

[0007] Fourthly, embodiments of this application provide a terminal device, the terminal device including at least one processor, a communication interface and a memory, the communication interface being used to send and / or receive data, the memory being used to store a computer program, and the at least one processor being used to call the computer program stored in the memory to implement the method as described in the first aspect of this application.

[0008] Fifthly, embodiments of this application provide an electronic device including a processor and a memory, the memory being used to store computer program code, the computer program code including computer instructions, wherein when the processor executes the computer instructions, the electronic device executes the instructions as in the steps of the method of the first aspect of this application.

[0009] Sixthly, embodiments of this application provide a computer-readable storage medium storing a computer program, the computer program including program instructions that, when executed by a processor, cause the processor to perform some or all of the steps described in the method of the first aspect of embodiments of this application.

[0010] In a seventh aspect, this application provides a computer program operable to cause a computer to perform some or all of the steps described in the method of the first aspect of the embodiments of this application. The computer program may be a software installation package.

[0011] As can be seen, in this embodiment, the device parameters of the reference dispersion equipment and the material characteristic parameters of the material are obtained, including the material viscosity and the material type; operating parameters are determined based on the device parameters and the material viscosity, including the target rotational speed; suitable operating parameters are determined based on the material viscosity to reduce noise at the source; configuration parameters and guide hole parameters are determined based on the operating parameters, device parameters, and material characteristic parameters; configuration parameters include the rotor tooth slot configuration parameters, the number of stator tooth slots, the spacing between the rotor ring and the stator ring, and the volute parameters of the reference dispersion equipment; guide hole parameters include the number and diameter of guide holes in the stator of the reference dispersion equipment; noise data at the output end of the reference dispersion equipment is predicted based on the guide hole parameters and configuration parameters; Helmholtz resonator array parameters are determined based on the noise data, the material type, and the preset resonator calculation formula; the reference dispersion equipment is configured based on the guide hole parameters, configuration parameters, and Helmholtz resonator array parameters to obtain the target dispersion equipment, and the target rotational speed is configured as the operating rotational speed of the target dispersion equipment. In this application, operating parameters are determined based on the material viscosity, and then the dispersion equipment is configured based on the operating parameters to improve the adaptability and rationality of the noise reduction structure of each link inside the determined dispersion equipment, thereby improving the noise reduction capability. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic diagram of a dispersion device provided in an embodiment of this application; Figure 2 A flowchart illustrating a noise reduction design method for a distributed device provided in an embodiment of this application; Figure 3 This is an overall schematic diagram of a rotor and stator provided in an embodiment of this application; Figure 4 This is an overall schematic diagram of another rotor and stator provided in an embodiment of this application; Figure 5 for Figure 4 Schematic diagram of the cross section at point BB; Figure 6 A schematic diagram of the rotor and stator disassembled according to an embodiment of this application; Figure 7 Another schematic diagram showing the rotor and stator disassembly provided in this application embodiment; Figure 8 for Figure 7 Schematic diagram of the cross section at point CC; Figure 9 for Figure 7 Schematic diagram of the cross section at point DD; Figure 10 for Figure 2 Schematic diagram of the cross section at point AA; Figure 11 A comparison diagram of static pressure cloud images of existing dispersion equipment and the dispersion equipment of this application provided for embodiments of this application; Figure 12 This is a block diagram of the functional units of a noise reduction design device for a distributed device provided in an embodiment of this application. Detailed Implementation

[0014] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0015] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0016] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0017] In this application, the reference dispersion device includes a local controller and a viscosity sensor. The viscosity sensor can collect the measured viscosity of the material in real time, and the local controller can perform end-to-end control, including data acquisition, formula calculation, and speed command issuance, thereby avoiding the network latency and data loss risks caused by remote server transmission. The viscosity sensor is installed at the device's feed inlet and connected to the local controller for data exchange.

[0018] In one possible example, the local controller can communicate with the server to update the corresponding program of the local controller or transmit data to the server for processing, thereby reducing the internal resource consumption of the local controller.

[0019] For specific details, please refer to... Figure 1 and Figure 2 The noise reduction design method for the distributed equipment involved in this application is described. Figure 1 A schematic diagram of a dispersion device provided in an embodiment of this application; Figure 2 This is a flowchart illustrating a noise reduction design method for a distributed device provided in an embodiment of this application. Figure 1 and Figure 2 As shown, a noise reduction design method for a distributed device includes: S201, Obtain the device parameters of the reference dispersion equipment and the material characteristic parameters of the material.

[0020] The material characteristic parameters include material viscosity and material type. First, it is necessary to obtain the device parameters of the reference dispersion equipment and the material characteristic parameters of the material, including material viscosity and material type. It is understood that the device parameters of the reference dispersion equipment may include structural dimensions such as the nominal outer diameter of the rotor, the nominal outer diameter of the stator, the number of stator gear layers, and the number of rotor gear layers. The material characteristic parameters characterize the material's properties, including material density, material type, power-law exponent, and particle size. Obtaining the device parameters and material characteristic parameters provides data support for the subsequent noise reduction design of the dispersion equipment.

[0021] S202, determine the operating parameters based on the device parameters and the material viscosity.

[0022] The operating parameters include the target rotational speed. These parameters are determined based on the device parameters and material viscosity to predict the target rotational speed during the operation of the dispersion equipment, ensuring the reasonableness of the determined target rotational speed.

[0023] S203, determine the configuration parameters and guide hole parameters based on the operating condition parameters, the device parameters and the material characteristic parameters.

[0024] Among them, please refer to Figure 1 and Figure 3 , Figure 3 This is an overall schematic diagram of a rotor and stator provided in an embodiment of this application. The configuration parameters include the rotor tooth slot configuration parameters of the reference dispersion device, the number of stator tooth slots, the spacing distance between the rotor ring and the stator ring, and the volute parameters. The guide hole parameters include the number and diameter of the guide holes in the stator 4 of the reference dispersion device.

[0025] Specifically, configuration parameters and guide hole parameters are determined based on operating parameters, device parameters, and material characteristic parameters. Configuration parameters include the rotor tooth slot configuration parameters of the reference dispersion equipment, the number of stator tooth slots, the spacing between the rotor rings and stator rings, and the volute parameters of the volute 1. Guide hole parameters include the number and diameter of guide holes in the stator of the reference dispersion equipment. Guide holes 42 are through holes opened in the circumferential direction of the stator 4. The guide holes 42 are symmetrically distributed along the central axis of the stator 4, providing an additional pressure relief channel for the stator 4. Specifically, during dispersion operations, material thrown against the stator wall can flow out through the guide holes 42 instead of through the tooth slots of the stator 4, increasing the effective flow area, reducing the overall turbulence intensity, and lowering the overall noise of the equipment.

[0026] Please refer to the following: Figure 3 and Figure 6 , Figure 6 This is a schematic diagram of a rotor and stator disassembled according to an embodiment of this application. The rotor slot configuration parameters include the number of rotor slots and the slotting angle of each rotor slot 31 relative to the central axis of the rotor 3. In this application, the rotor slots 31 adopt a locally asymmetrical structure. By changing the slotting angle of the rotor slots 31 relative to the central axis of the rotor 3, the periodic pressure pulses generated by slots with the same angle can be avoided from superimposing, so that the generated sound is dispersed over a wider frequency band, thereby reducing impact noise.

[0027] S204, based on the flow guide parameters and the configuration parameters, predict the noise data at the output of the reference dispersion device.

[0028] Among them, the noise data of the reference distributed device output terminal 12 is predicted based on the flow guide hole parameters and configuration parameters, providing data support for subsequent design.

[0029] S205, determine the Helmholtz resonant cavity array parameters based on the noise data, the material type, and the preset resonant cavity calculation formula.

[0030] After obtaining the noise data, the parameters of the Helmholtz resonator array are determined based on the noise data, material type, and preset resonator calculation formula. The residual noise in the human ear sensitive frequency band of the noise data is dissipated through the Helmholtz resonator array, thereby reducing the noise.

[0031] S206, configure the reference dispersion device based on the flow guide hole parameters, the configuration parameters and the Helmholtz resonant cavity array parameters to obtain the target dispersion device, and configure the target rotation speed as the operating rotation speed of the target dispersion device.

[0032] Specifically, a reference dispersion device is configured based on the parameters of the guide hole, configuration parameters, and Helmholtz resonant cavity array parameters to obtain the target dispersion device. The determined target rotational speed is input as an operating parameter into the target dispersion device, so that the motor of the target dispersion device drives the rotor 3 to rotate at the target rotational speed during actual dispersion production. The target dispersion device is the designed dispersion device.

[0033] As can be seen, in this example, by referring to the device parameters of the dispersion equipment and the material characteristic parameters of the material, the operating parameters, including the target rotation speed, are determined. Then, based on the operating parameters, the parameters of the guide hole, the configuration parameters, and the parameters of the Helmholtz resonant cavity array are configured, so that the dispersion equipment can improve the noise reduction effect through multi-stage coordinated noise reduction.

[0034] In one possible example, please combine Figure 4 and Figure 5 , Figure 4 This is an overall schematic diagram of another rotor and stator provided in an embodiment of this application; Figure 5 for Figure 4 A schematic diagram of the cross-section at point BB. Figure 4 and Figure 5 As shown, the step of determining the operating parameters based on the device parameters and the material viscosity includes: obtaining a preset rotational speed determination formula, the material viscosity, the nominal outer diameter of the rotor in the device parameters, and the maximum reference rotational speed corresponding to the reference dispersion device; determining the target rotational speed according to the rotational speed determination formula, the maximum reference rotational speed, and the material viscosity; determining the rotor tooth tip linear velocity according to the target rotational speed, the nominal outer diameter of the rotor, and a preset rotor tooth tip linear velocity formula; and generating the operating parameters according to the target rotational speed and the rotor tooth tip linear velocity.

[0035] In a specific example, operating parameters are determined based on device parameters and material viscosity. Specifically, a preset speed determination formula, material viscosity, maximum allowable speed, preset reference viscosity, rotor nominal outer diameter from the device parameters, and the maximum reference speed corresponding to the reference dispersion device are obtained. The material viscosity can be obtained in real time using a viscosity sensor, and the maximum allowable speed is determined based on the rated motor power and mechanical strength of the reference dispersion device. The speed determination formula is as follows: ; Where μ is the measured viscosity of the material, in millipascals per second (N). max This represents the maximum permissible speed. N is the target speed, measured in r / min. The preset reference viscosity is the material viscosity corresponding to the rated operating conditions; k is the viscosity-speed adjustment coefficient. If the material is a Newtonian fluid, the value of k ranges from 0.3 to 0.4. If the material is a non-Newtonian fluid, the value of k ranges from 0.2 to 0.3.

[0036] The target rotational speed is calculated by substituting the obtained material viscosity, maximum allowable rotational speed, and preset reference viscosity into the rotational speed determination formula.

[0037] In one possible example, the maximum and minimum permissible rotational speeds of a reference dispersion device are obtained. When the material viscosity is high, i.e., the calculated target rotational speed is greater than the maximum permissible speed, the target rotational speed can be smoothly reduced according to a preset rule, thereby reducing additional hydrodynamic noise caused by excessive shear force. When the material viscosity is low, i.e., the calculated target rotational speed is less than the minimum permissible speed, the target rotational speed can be appropriately increased. Specifically, it is usually taken as 30% to 40% of the maximum permissible speed, thus ensuring the dispersion efficiency of the device while meeting the requirements of low-noise operation.

[0038] After determining the target speed, the rotor tooth tip velocity is determined based on the target speed, the rotor nominal outer diameter, and a preset rotor tooth tip velocity formula. Specifically, the rotor tooth tip velocity formula is: ; Where u is the rotor tooth tip linear velocity, in m / s; D r The rotor gear ring outer diameter is represented in meters (m); N represents the target rotational speed. After obtaining the target rotational speed and rotor tooth tip linear velocity, the operating parameters are integrated. This provides data support for subsequent structural design.

[0039] As can be seen, in this example, the operating parameters, including the target rotational speed and the rotor tooth tip linear velocity, are determined based on the material viscosity, which improves the rationality and adaptability of the determined operating parameters, thereby reducing hydrodynamic noise from the source and improving noise reduction capability.

[0040] In one possible example, determining the configuration parameters and guide hole parameters based on the operating parameters, the device parameters, and the material characteristic parameters includes: acquiring a preset reference tilt angle, a preset set of cogging adjustment values, the target rotational speed within the operating parameters, the rotor tooth tip linear velocity, the rotor single tooth thickness within the device parameters, the rotor nominal outer diameter, the stator nominal outer diameter, the rated maximum material flow rate, and the material viscosity, material density, and power law exponent within the material characteristic parameters, wherein the cogging adjustment value set includes the correspondence between different layers of the stator ring and different cogging adjustment values; determining the number of rotor tooth slots based on the target rotational speed, the rotor single tooth thickness, and the rotor nominal outer diameter; determining the volute parameters according to preset volute design rules and the rotor nominal outer diameter; determining the generalized Reynolds number based on the rotor tooth tip linear velocity, the material viscosity, the material density, the power law exponent, and the rotor nominal outer diameter; and determining the generalized Reynolds number based on the reference tilt angle, the generalized Reynolds number, and the rotational speed. The slotting angle of each rotor tooth relative to the central axis of the rotor is determined by the linear velocity of the rotor tooth tip, the material density, and the power law exponent; the rotor tooth configuration parameters are integrated based on the number of rotor tooth slots and the slotting angle of each rotor tooth relative to the central axis of the rotor; the number of stator tooth slots is determined based on the number of rotor tooth slots and the set of tooth slot adjustment values; the total number of stator rings of the stator is obtained; the layer correction coefficient is determined based on the total number and a preset layer correction coefficient formula; the interval distance is obtained by substituting the layer correction coefficient, the generalized Reynolds number, and the nominal outer diameter of the stator into a preset interval distance calculation formula; the number and diameter of the guide holes are determined based on a preset effective flow area of ​​the stator outer ring tooth slots, a preset target tooth slot flow velocity, and the rated maximum material flow rate; the configuration parameters are integrated based on the rotor tooth configuration parameters, the number of stator tooth slots, and the interval distance; the guide hole parameters are integrated based on the number and the diameter.

[0041] The step of determining the number of rotor slots based on the target rotational speed, the thickness of a single rotor tooth, and the nominal outer diameter of the rotor includes: determining a threshold range for the number of rotor slots according to a preset formula for calculating the upper limit and lower limit of the number of rotor slots, the target rotational speed, the thickness of a single rotor tooth, and the nominal outer diameter of the rotor; determining the number of slot groups and the number of slots in each group of slots for a single rotor ring of the reference dispersion device according to a preset grouping rule and the threshold range of the number of rotor slots; and determining the number of rotor slots according to the number of slot groups and the number of slots.

[0042] In a specific example, the following parameters are first obtained: a preset reference tilt angle, a preset set of cogging adjustment values, the target rotational speed and rotor tooth tip linear velocity from the operating parameters, the rotor single tooth thickness B1, rotor nominal outer diameter, stator nominal outer diameter, rated maximum material flow rate from the device parameters, and the material viscosity, material density, and power law exponent from the material characteristic parameters. The set of cogging adjustment values ​​includes the correspondence between different layers of stator rings and different cogging adjustment values. The reference tilt angle represents the tilt angle preset for different needs of the dispersion equipment. Specifically, if noise reduction is prioritized, the tilt angle range includes 8~10 degrees; if improving dispersion efficiency is prioritized, the tilt angle range includes 6~8 degrees. In use, the angle is selected from the corresponding range according to the requirements to generate the reference tilt angle.

[0043] Then, the number of rotor slots is determined based on the target rotational speed, rotor single-tooth thickness B1, and rotor nominal outer diameter. Specifically, the threshold range of the number of rotor slots is determined according to the preset calculation formulas for the upper and lower limits of the number of rotor slots, the target rotational speed, rotor single-tooth thickness B1, and rotor nominal outer diameter. This ensures the basic dispersion and refinement effect of the material while avoiding flow resistance and material blockage. The calculation formula for the upper limit of the number of rotor slots is: ; in, D is the upper limit of the number of rotor tooth slots; r k is the nominal outer diameter of the rotor. p b is the rotor pumping coefficient. If rotor 3 has an impellerless structure, then it is taken as 0.4. r Let B1 be the thickness of a single rotor tooth, with a preset threshold range between 0.01 and 0.02 times the nominal outer diameter of the rotor. In one possible example, if rotor 3 has an impeller structure, then k p The value range includes 0.6 to 0.8.

[0044] The formula for calculating the lower limit of the number of rotor tooth slots is: ; in, is the lower limit of the number of rotor tooth slots, and N is the target speed.

[0045] For example, in this application, the target rotational speed of the reference dispersion device is 500, kJ / L. p Take 0.4, b r Using 0.01 times the nominal outer diameter of the rotor, the lower limit of the number of rotor tooth slots is calculated. =60, Maximum number of rotor tooth slots ≈125. After determining the threshold range for the number of rotor slots, the number of slot groups and the number of slots in each group of slots for a single rotor ring of the reference distributed equipment are determined according to the preset grouping rules and the threshold range for the number of rotor slots. Specifically, the rotor slots 31 on rotor 3 are divided into multiple groups. In order to maintain the balance of rotor 3 during high-speed rotation and avoid abnormal vibration and mechanical noise caused by uneven mass distribution, the grouping rules require that the slots be divided into evenly even groups. Furthermore, the angles of adjacent rotor slots 31 within each group are set at equal intervals. The grouping rules can be expressed as: ; Among them, Z r Z represents the number of rotor tooth slots. r Greater than or equal to And Zr is less than or equal to m represents the number of tooth grooves in each group, and m is a positive integer between three and eight. M is the number of tooth groove groups, which can be an even number between four and twelve. For example, please refer to [link / reference]. Figures 6-8 As shown, Figure 7 Another schematic diagram showing the rotor and stator disassembly provided in this application embodiment; Figure 8 for Figure 7 A cross-sectional view at point CC. The first rotor tooth group 30 includes 6 groups, each group including 5 rotor tooth slots 31, and the total number of teeth of rotor 3 is finally determined to be Z. r =M×m=30.

[0046] By reasonably matching and selecting the number of tooth slot groups within the threshold range of the number of rotor tooth slots, the number of rotor tooth slots is determined, thereby meeting the high-speed dynamic balance requirements of the three rotor components, improving the rationality of the determination results, ensuring structural strength, and reducing noise.

[0047] The volute parameters are determined according to the preset volute design rules and the nominal outer diameter of the rotor. The volute 1 includes a flow channel and a volute tongue. The flow channel can accommodate the rotor 3 and the stator 4. The flow channel is a logarithmic helix type, and its helix angle, which determines the characteristic angle of the radial expansion of the helix, ranges from 25 to 40 degrees. The base circle of the flow channel, i.e., the reference circumference where the logarithmic helix begins to arrange, has a diameter set to 1.05 to 1.1 times the nominal outer diameter of the rotor. For example, selecting 1.07 times the nominal outer diameter of the rotor ensures that the fluid velocity changes uniformly and gradually within the flow channel, avoiding secondary turbulence and pressure caused by abrupt changes in the flow area. The outlet width of the flow channel, i.e., the width of the outlet end 12 of the flow channel, is the same as the outlet width of the rotor 3, ensuring that there are no abrupt changes in the axial flow cross-section when the fluid enters the volute 1, reducing noise.

[0048] The volute tongue of the volute 1 has an elliptical transition structure, with the major axis of the ellipse parallel to the flow channel direction. The ratio of the major axis to the minor axis ranges from 2:1 to 3:1 to prolong the contact time between the fluid and the volute tongue and disperse the impact peak. The gap between the volute tongue and the rotor 3 is 5% to 8% of the rotor 3 diameter to prevent eddies from periodically falling off at the volute tongue, thereby reducing tongue impact noise and eddy noise.

[0049] The generalized Reynolds number is determined based on the rotor tooth tip velocity, material viscosity, material density, power-law exponent, and rotor nominal outer diameter. The generalized Reynolds number characterizes the flow state of non-Newtonian fluids in high-shear channels. The formula for calculating the generalized Reynolds number is: ; in, ρ is the generalized Reynolds number; ρ is the material density; D r is the nominal outer diameter of the rotor; u is the linear velocity of the rotor tooth tip. is the measured viscosity of the material; n is the power-law exponent. Wherein, This is a correction factor.

[0050] Then, based on the reference tilt angle, generalized Reynolds number, rotor tooth tip linear velocity, material density, and power law exponent, the grooving angle of each rotor tooth slot 31 relative to the central axis of rotor 3 is determined. This tilts the rotor tooth slot 31 relative to the rotor central axis, allowing the material to gradually cut into high-viscosity materials along the edge of the slot, extending the cutting time, dispersing the impact force, and effectively reducing the pressure peak of a single impact, thus weakening shear impact noise. After determining the number of rotor tooth slots and the grooving angle of each rotor tooth slot 31 relative to the central axis of rotor 3, rotor tooth slot configuration parameters are integrated based on the number of rotor tooth slots and the grooving angle of each rotor tooth slot 31 relative to the central axis of rotor 3.

[0051] Furthermore, the number of stator slots can be determined based on the number of rotor slots and the set of slot adjustment values. Specifically, the layer number of the stator ring in stator 4 is determined. The stator rings are sequentially ordered from the central axis of stator 4 to the outermost layer as layer 1, layer 2, ..., layer P, where P is a positive integer. The slot adjustment value corresponding to the stator ring is obtained from the set of slot adjustment values ​​based on the layer number of stator 4. The number of rotor slots in each layer of rotor ring is determined based on the slot adjustment value, the preset first rotor slot determination formula, and the second rotor slot determination formula. If the rotor ring is in layer 1 or layer P, the number of slots is determined based on the first rotor slot determination formula. The first rotor slot determination formula is as follows: ; in, This is the toothed adjustment value; This is the first layer of rotor rings. This is the P-th layer of rotor rings; This represents the number of rotor tooth slots.

[0052] If the stator ring is between the first layer and the Pth layer, then the second rotor tooth slot is determined based on the formula for determining the second rotor tooth slot. The formula for determining the second rotor tooth slot is: ; in, Let t be the number of tooth slots in the t-th layer of stator ring, where t = (2, 3, ..., P-1); This is the toothed adjustment value; The number of rotor tooth slots. Furthermore, the ratio of the number of tooth slots between stator 4 and rotor 3 must not be an integer, one-half, one-third, or two-thirds, etc., to avoid resonance.

[0053] For example, if the number of rotor slots is determined to be 30 and the slot adjustment value is 2, then the number of slots between the three layers of stator rings in stator 4, from the first layer to the outermost layer, is determined to be 32, 36, and 32 respectively. Furthermore, the ratio of the number of slots in each layer of stator 4 to the number of rotor slots 31 is a non-integer ratio, avoiding simple fractional ratios such as one-half or one-third, thus preventing resonance.

[0054] Furthermore, the total number of stator rings in stator 4 is obtained, and the layer correction factor is determined based on the total number of stator rings and the layer correction factor formula. Then, based on the layer correction factor, the generalized Reynolds number, and the nominal outer diameter of the stator, the preset interval distance calculation formula is applied to obtain the interval distance between the rotor rings and the stator rings. This is to prevent excessive noise caused by material flow within the gap during the operation of the dispersion equipment. Specifically, the interval distance calculation formula is: ; Where s is the interval distance, and s satisfies the following constraints: s must be greater than or equal to 2 mm and less than or equal to 15 mm, and s must be greater than or equal to twice the fluid boundary layer thickness. The fluid boundary layer thickness characterizes the thickness of the material that will adhere to the wall of rotor 3 or stator 4, and s is less than or equal to 1.5 times the radial tooth height of the gear ring. The generalized Reynolds number correction factor is used in the laminar flow section, i.e., it satisfies... When the generalized Reynolds number is less than 2300, the correction coefficient is taken as follows: When it is a turbulent section, it satisfies... Take when ≥2300 D s The nominal outer diameter of the stator; This is a correction factor for the number of layers. N s Where L is the total number of stator rings, and L is the preset total number of stator rings. The layer number correction factor ranges from 0.5 to 1.5.

[0055] For example, if L is set to 3 in this application, and N is actually set to 3... s If it is 3, then It is 1. D s When the spacing is 100mm, the stator three-layer gear spacing is 6.5mm, which is completely consistent with the rotor gear spacing, satisfying the design rules of equal spacing and uniform flow field of this invention. At the same time, it is verified that this spacing satisfies the constraints s≥2δbl (boundary layer thickness) and s≤1.5h, where h is the radial tooth height of the gear ring.

[0056] In this regard, please combine Figure 9 , Figure 9 for Figure 7 Please refer to the cross-sectional diagram at point DD. Figure 7 and Figure 9 The stator ring has guide holes 42. During the high-shear dispersion process, some material can flow out through these guide holes 42, increasing the pressure relief flow area of ​​the stator wall, thereby reducing the local flow velocity and thus reducing noise. The number and diameter of the guide holes 42 are determined based on the preset effective flow area of ​​the stator outer ring tooth groove, the preset target tooth groove flow velocity, and the rated maximum material flow rate.

[0057] Finally, the configuration parameters of the high shear unit are generated by integrating the rotor tooth slot configuration parameters, the number of stator tooth slots and the spacing distance, and the guide hole parameters are generated by integrating the determined number and diameter of the guide holes 42.

[0058] As can be seen, in this example, the configuration parameters and guide hole parameters are determined by operating condition parameters, device parameters and material characteristic parameters, which improves the rationality and adaptability of the determined parameters, thereby enhancing the noise reduction capability of the equipment.

[0059] In one possible example, determining the slotting angle of each rotor tooth relative to the central axis of the rotor based on the reference tilt angle, the generalized Reynolds number, the rotor tooth tip linear velocity, the material density, and the power law exponent includes: determining a linear velocity correction coefficient based on the rotor tooth tip linear velocity and a preset linear velocity correction formula; determining a generalized Reynolds number correction coefficient based on the generalized Reynolds number and a preset threshold; determining a non-Newtonian characteristic correction coefficient based on the power law exponent and a preset non-Newtonian characteristic correction coefficient formula; determining a density correction coefficient based on the material density and a preset density correction formula; determining the maximum tilt angle of the tooth slots in each group of tooth slots according to the reference tilt angle, the linear velocity correction coefficient, the generalized Reynolds number correction coefficient, and the density correction coefficient; determining the tilt difference between adjacent tilt angles in each group of tooth slots according to the maximum tilt angle and the number of tooth slots; and determining the slotting angle of each rotor tooth relative to the central axis of the reference dispersion device according to the maximum tilt angle and the tilt difference.

[0060] In a specific example, the rotor tooth groove 31 of the rotor ring of rotor 3 is an inclined helical tooth. The upper rotor tooth groove 31 of the rotor ring is divided into multiple groups of tooth grooves. The grooving angle of each rotor tooth groove 31 in each group of tooth grooves relative to the central axis of rotor 3 is different.

[0061] Specifically, the linear velocity correction coefficient is determined based on the rotor tooth tip linear velocity and a preset linear velocity correction formula. The linear velocity correction formula can be expressed as: ; Among them, The linear velocity correction coefficient ranges from 0.5 to 2.0. When the linear velocity of the rotor tooth tip is proportional to the linear velocity correction coefficient, that is, the greater the linear velocity of the rotor tooth tip, the stronger the shearing action on the material, the linear velocity correction coefficient will increase accordingly, so that the determined slotting angle matches the rotational speed.

[0062] The generalized Reynolds number correction coefficient is determined based on the generalized Reynolds number and a preset threshold, where the preset threshold is 2300.

[0063] Generalized Reynolds number correction factor when the generalized Reynolds number is less than 2300 Pick ,in, The generalized Reynolds number; when the generalized Reynolds number is greater than or equal to 2300 Pick .

[0064] The non-Newtonian property correction coefficient is determined based on the power law exponent and a pre-defined formula. The formula for the non-Newtonian property correction coefficient can be expressed as: ; Among them, K n is the non-Newton characteristic correction coefficient, with a value ranging from 1.0 to 1.5, and n is the power law exponent, used to adjust the influence of material viscosity on the dispersion effect.

[0065] The density correction factor is determined based on the material density and a pre-defined density correction formula. The density correction formula can be expressed as: ; in, This is the density correction factor, with a value ranging from 0.8 to 1.2; The density is the material density. The higher the material density, the higher the force required by the rotor tooth groove 31 on the material, and the density correction coefficient increases accordingly to ensure that the groove angle design can provide sufficient dispersing force for high-density materials.

[0066] The maximum tilt angle of each tooth groove is determined based on the reference tilt angle, linear velocity correction factor, generalized Reynolds number correction factor, non-Newtonian characteristic correction factor, and density correction factor. The maximum tilt angle can be determined using the following formula:

[0067] in, The maximum tilt angle is defined as θ, which is greater than or equal to 3 degrees and less than or equal to 15 degrees. That is, if the maximum tilt angle calculated using the above formula is less than 3 degrees, the minimum tilt angle is used; if the calculated maximum tilt angle is greater than 15 degrees, the maximum tilt angle is used. This avoids situations where an excessively small tilt angle results in no noise reduction effect, or an excessively large tilt angle leads to a loss of shearing efficiency. base The reference tilt angle is set at 8-10 degrees if noise reduction is the primary objective. In a possible example, if analysis efficiency is the primary objective, the reference tilt angle is preferably set at 6-8 degrees. u This is the linear velocity correction factor; K is the generalized Reynolds number correction coefficient; n It is a non-Newton characteristic correction system; This is the density correction factor.

[0068] The tilt difference between adjacent tilt angles within each group of tooth slots is determined based on the maximum tilt angle and the number of tooth slots. The tilt difference can be determined using the following formula: ; in, Here, m represents the tilt difference, and m represents the number of slots in each group. By determining the difference in tilt angle between adjacent slots in each group, the slotting angle in each group is made to have a gradient distribution, thereby creating a continuously changing shear dispersion effect during the rotation of rotor 3 and improving the stability during the dispersion process.

[0069] The grooving angle of each rotor tooth slot 31 relative to the central shaft of the dispersing device is determined based on the maximum tilt angle. The grooving angle of each tooth slot can be determined by the following formula: ; in, Let be the i-th tooth in each group of tooth slots. From the above formula, we know that the grooving angle of the first tooth in each group is the maximum tilt angle, and the grooving angle of the last tooth is the minimum tilt angle. The grooving angles of each tooth slot decrease sequentially, and the first tooth in each group is adjacent to the last tooth in the previous group. For example, the calculated maximum tilt angle θ... max =8 degrees, the tilt difference is 2 degrees, and the tilt angles of the five tooth grooves in each group are finally determined to be 0°, 2°, 4°, 6° and 8° respectively.

[0070] As can be seen, in this example, by using arithmetically increasing slot angles to form an asymmetric slot group within the same group of slots, the impact pressure can be dispersed when the rotor slots 31 come into contact with the fluid, thereby reducing noise.

[0071] In one possible example, determining the number and diameter of the guide holes based on a preset effective flow area of ​​the stator outer ring tooth groove, a preset target tooth groove velocity, and the rated maximum material flow rate includes: determining the total flow area of ​​the guide holes based on the effective flow area of ​​the stator outer ring tooth groove, the preset target tooth groove velocity, and the rated maximum material flow rate; and determining the number and diameter based on the total flow area of ​​the guide holes, a preset formula for calculating the number of guide holes, and a formula for calculating the area of ​​a single guide hole.

[0072] In a specific example, the total flow area of ​​the guide holes is determined based on the effective flow area of ​​the stator outer ring tooth groove, the preset target tooth groove velocity, and the rated maximum material flow rate within the device parameters. The formula for calculating the total flow area of ​​the guide holes can be expressed as: Among them, A h v represents the total flow area of ​​the guide holes, which can be expressed in square meters; s0 The target toothed flow velocity is defined as follows: if the purpose of the dispersion equipment is noise reduction, the target toothed flow velocity ranges from 5 to 8 m / s.

[0073] In one possible example, if the dispersing device aims for dispersing efficiency, the target cogging velocity ranges from 10 to 15 m / s. s This refers to the effective flow area of ​​the stator outer ring tooth groove, which can be expressed in square meters.

[0074] After determining the total flow area of ​​the guide holes, the local controller can determine the number and diameter of the guide holes 42 based on the total flow area, the preset formula for calculating the number of guide holes, and the formula for calculating the area of ​​a single guide hole. The specific formula for calculating the area of ​​a single guide hole can be expressed as follows: ; Among them, A sing The area of ​​a single guide hole is represented by square meters; d can be the diameter of the guide hole, which can be represented by meters. The specific formula for calculating the number of guide holes can be expressed as: ; Where X can be the number of guide holes 42; A h This can be the total flow area of ​​the guide holes; A singThe area of ​​a single guide hole can be determined. The formulas for calculating the area of ​​a single guide hole and the number of guide holes determine the number of guide holes 42 and their area. The hole diameter d is greater than the particle size of the material. A preset number of material particles are collected, and the average particle size of these particles is calculated. The hole diameter is then determined based on this average particle size. For example, the hole diameter should not be less than ten times the median particle size of the solid particles in the material to avoid particles clogging the guide holes 42. Furthermore, the hole diameter should not be less than two millimeters. Simultaneously, to ensure the overall mechanical strength of the stator 4 structure and prevent stator deformation due to excessive guide holes 42, the number of guide holes 42 is less than one-quarter of the number of teeth on the outermost gear ring of the stator. Moreover, the number of guide holes 42 can preferably be a positive integer multiple of four, and they should be uniformly and symmetrically distributed circumferentially in the middle of the axial direction of the outer gear ring of the stator to improve stability during dispersion.

[0075] As can be seen, in this example, the number and area of ​​the guide holes 42 are determined by the stator tooth groove 41, which ensures the structural strength of the stator 4 and prevents the guide holes 42 from being blocked. At the same time, the pressure is released through the guide holes 42, which further improves the noise reduction capability.

[0076] In one possible example, determining the Helmholtz resonator array parameters based on the noise data, the material type, and the preset resonator calculation formula includes: determining the fluid velocity corresponding to the material based on the material type; determining the parameters of each Helmholtz resonator based on the fluid velocity, the noise data, and the preset resonator calculation formula, to obtain the Helmholtz resonator array parameters composed of the parameters of each Helmholtz resonator.

[0077] In a specific example, the fluid sound velocity corresponding to the material to be dispersed is first determined based on the type of material. Since different materials have different densities, viscosities, and compressibility, the propagation speed of sound waves in these different media will also exhibit significant differences. Therefore, the fluid sound velocity relative to the material type is obtained.

[0078] After obtaining the fluid sound velocity, the parameters of each Helmholtz resonator can be determined based on this fluid sound velocity, the target frequency band in the noise data, and a preset resonator calculation formula. The specific resonator calculation formula can be expressed as: ; Among them, f HHere, is the natural frequency of the resonant cavity, i.e., the noise frequency to be eliminated; c is the fluid velocity; A is the cross-sectional area of ​​the resonant cavity neck; V is the cavity volume of the resonant cavity; and L is the length of the resonant cavity neck. By adjusting parameters such as the cross-sectional area, cavity volume, and neck length of the neck, the parameters of the corresponding Helmholtz resonant cavity are obtained. For different noise frequencies, corresponding Helmholtz resonant cavities are set up, and the parameters of each Helmholtz resonant cavity are combined to generate the parameters of the Helmholtz resonant cavity array. The natural frequencies of multiple resonant cavities can cover the target frequency band. The target frequency band is the mid-to-high frequency noise band in the noise data that falls within the range of 500 to 2000 Hz, where the human ear is most sensitive. The Helmholtz resonant cavity can be uniformly embedded circumferentially into the non-pressure-bearing area of ​​the volute 1, with the neck opening of the resonant cavity completely flush with the inner wall of the flow channel, thereby reducing interference with material flow.

[0079] As can be seen, in this example, the noise at the output terminal 12 of the device is further eliminated by the Helmholtz resonant cavity, thereby enhancing the noise reduction capability of the device.

[0080] In one possible example, after configuring the reference dispersion device based on the flow guide parameters, the configuration parameters, and the Helmholtz resonant cavity array parameters to obtain the target dispersion device, and configuring the target rotation speed as the operating rotation speed of the target dispersion device, the method further includes: during the operation of the dispersion device, collecting the actual viscosity of the material processed by the dispersion device in the current cycle; comparing the actual viscosity with the actual viscosity collected in the previous cycle to obtain a viscosity difference; obtaining a real-time adjustment rotation speed based on the absolute value of the viscosity difference and a preset rotation speed adjustment formula; and adjusting the target rotation speed according to the real-time adjustment rotation speed.

[0081] In a specific example, during the operation of the dispersion equipment, the actual viscosity of the material being processed is collected according to a preset cycle. Specifically, the actual viscosity of the material in the current cycle is collected. The viscosity difference between this actual viscosity and the actual viscosity collected in the previous cycle is calculated. Then, the real-time adjustment speed is obtained based on the absolute value of this viscosity difference and a preset speed adjustment formula. If the current cycle is the first cycle, the actual viscosity of the material in the previous cycle is taken as the material viscosity.

[0082] The preset speed adjustment formula is: ; Where N(t) is the real-time adjusted rotational speed. The rotational speed smoothing transition coefficient ranges from 0.1 to 0.3. N represents the target rotational speed, and T represents the period. For materials with a viscosity less than 100 mPa·s, the period is 100 ms. For materials with a viscosity greater than 100 mPa·s but less than 1000 mPa·s, the period is 200 ms. For materials with a viscosity greater than or equal to 1000 mPa·s, the period is 500 ms. N(tT) represents the rotational speed of the previous period.

[0083] A preset difference threshold is obtained. If the absolute value of the viscosity difference is less than the preset difference threshold, the dispersion device maintains the current speed. If the absolute value of the viscosity difference is greater than the preset difference threshold, the real-time adjustment speed is determined according to the preset speed adjustment formula. Finally, the target speed configuration is adjusted according to the real-time adjustment speed to reduce noise from the source.

[0084] For example, taking lithium battery cathode slurry as an example, the maximum allowable rotation speed of the dispersion equipment is 1500 r / min, and the minimum allowable rotation speed is 450 r / min. The design reference viscosity for the lithium battery cathode slurry is 1000 mPa·s, and the preset difference threshold is 20 mPa·s; the viscosity-speed adjustment coefficient is 0.35, the speed smoothing transition coefficient is 0.2, the cycle is set to 500 ms, and the material viscosity is 2000 mPa·s. The viscosity is collected at 2000 mPa·s in the first cycle. Then, the target rotation speed is calculated. N is approximately equal to 1170 r / min, and N(tT) is also 1170 r / min. Then, based on the preset speed adjustment formula, the real-time adjusted speed N(t) is calculated to be 1170 r / min. Based on the fluid acoustics theory commonly used in the field of rotating fluid machinery, that is, fluid dynamic noise is proportional to the 5th to 6th power of the speed, the basic noise reduction is calculated by combining the speed reduction under the operating condition, and then the additional noise reduction effect of the acoustic damping of the high viscosity medium itself is added. It is calculated that compared with the constant speed operation of the motor at 1500 r / min, the operating noise is reduced by about 8 dB(A).

[0085] As can be seen in this example, the dispersing device can adjust its rotation speed in real time based on the actual viscosity, adapting to changes in material viscosity under actual working conditions, and further improving the noise reduction capability of the dispersing device.

[0086] In one possible example, when the actual viscosity is greater than 5 times the preset reference viscosity (i.e., the material viscosity is too high), the minimum allowable speed is set to the real-time adjustable speed; if the actual viscosity is less than 0.2 times the preset reference viscosity (i.e., the material viscosity is too low), the maximum allowable speed is set to the real-time adjustable speed. If the viscosity sensor does not detect the actual viscosity, or the viscosity sensor signal exceeds its range, the target speed is set to the real-time adjustable speed.

[0087] In one possible example, this application also provides a dispersion device obtained by the noise reduction design method of the dispersion device described above.

[0088] Please refer to the following again. Figures 1-6 The dispersion device includes a local controller, a viscosity sensor, a drive motor, a volute 1, a rotor 3 disposed within the volute 1, and a stator 4. The rotor 3 may include at least one rotor ring, for example... Figure 8The middle part has two rotor rings, and the rotor rings have rotor tooth grooves 31; the stator 4 includes at least one stator ring, for example Figure 9 The device has three stator rings, each with a stator tooth groove 41, and a guide hole 42 can be opened on the stator ring along the circumferential direction of the dispersing device.

[0089] The viscosity sensor can be installed at the feed inlet 11 of the dispersion equipment and connected to a local controller. The local controller is connected to a drive motor, and the output shaft of the drive motor is fixedly connected to the rotor 3. The rotor 3 and the stator 4 are coaxially fitted together, with the stator rings and rotor rings staggered. The volute 1 is coaxially fitted outside the stator 4 to accommodate the stator 4 and the rotor 3. A Helmholtz resonant cavity array is formed inside the volute 1, and the Helmholtz resonant cavities in the array are evenly distributed circumferentially in the non-pressure-bearing area of ​​the volute 1.

[0090] The local controller can directly complete data acquisition, formula calculation and speed command issuance, thereby adjusting the speed in real time when the material viscosity changes.

[0091] Specifically, the rotor 3 includes a flow guide 32 and an annular cavity. The flow guide 32 is disposed on the central axis of the annular cavity, which includes a rotor base and rotor rings. The flow guide 32 has a conical or conical structure, with the cone angle ranging from 30 to 45 degrees. The conical or conical structure of the flow guide 32 can divert the material, reduce resistance during rotation, lower energy consumption, thereby reducing noise caused by the impact of the material on the flow guide 32, and ensuring the efficiency of the material entering the shear zone of the dispersion component, thus improving the dispersion effect of the slurry.

[0092] Please combine again Figure 8The rotor ring includes multiple sets of toothed grooves, and the grooving angle of each rotor toothed groove 31 relative to the central axis of the rotor 3 is different in each set. That is, each rotor toothed groove 31 has an inclination angle. In the traditional uniformly spaced toothed grooves, the contact with the slurry is instantaneous when cutting into the groove, resulting in strong impact noise and easy generation of separation eddies and turbulence behind the groove. In the present application, the inclination grooves make the contact between the groove edge and the slurry no longer instantaneous, but a gradual cut along the length of the groove edge. When the rotor 3 rotates, the time interval between adjacent grooves in the same set reaching the fixed point in space is no longer equal. The groove with the smaller inclination angle arrives first, and the groove with the larger inclination angle arrives later. For example, if the same set of grooves includes five rotor toothed grooves 31 with inclination angles of 0°, 2°, 4°, 6° and 8° respectively, during operation, the 0° groove makes contact first, followed by the 2° groove, and so on, until the 8° groove is fully cut in. This causes the multiple pressure pulses generated in the same set to no longer be equally spaced in time. The pressure pulses are phase-shifted in time. When these pulses with different phases propagate to the far field, they can no longer be perfectly synchronized and some pulses will cancel each other out, thus disrupting synchronicity and dispersing the acoustic energy originally concentrated on the fundamental frequency and a few strong harmonics across a wider frequency band. This directly reduces the intensity of the impact noise.

[0093] Please combine Figure 1 and Figure 10 , Figure 10 for Figure 2 A cross-sectional view at point AA. The volute 1 includes a flow channel and a volute tongue. The flow channel is a logarithmic spiral flow channel with V-shaped grooves 13 on its inner wall. These grooves start from the volute tongue and extend circumferentially around the logarithmic spiral flow channel until the output end 12 of the volute 1, continuously covering the entire width of the flow channel (perfectly matching the axial width of the stator 4 gear ring). The apex angle of the grooves 13 is 60°~90°, and the depth of the grooves 13 is 0.5mm~2mm. The spacing between the grooves 13 is 2~3 times the depth of the grooves 13. The grooves 13 on the inner wall of the flow channel disrupt the turbulent boundary layer, reducing wall friction noise and boundary layer eddy shedding noise, further improving the noise reduction capability of the dispersion equipment.

[0094] The structural features of the dispersion equipment, such as rotor tooth configuration parameters, stator tooth number, spacing between rotor and stator rings, volute parameters, number and diameter of guide holes 42, and Helmholtz resonant cavity array parameters, can be designed using the aforementioned noise reduction method. Furthermore, the operating speed of the dispersion equipment is configured to the target speed determined by this method. This ensures mutual matching between the various components of the dispersion equipment, improving the multi-stage collaborative noise reduction capability of the dispersion equipment.

[0095] Please see Figure 11 , Figure 11A comparison diagram of static pressure cloud maps between existing dispersion equipment and the dispersion equipment of this application, provided for embodiments of this application. For example... Figure 11 As shown, the rectangular static pressure (bar) scale on the left, from blue to red, indicates that the static pressure increases sequentially, with values ​​of 0.145, 0.396, 0.646, 0.896, 1.147, 1.398, 1.648, 1.899, 2.149, 2.400, and 2.650. Compared to the existing impeller dispersion device a, this device exhibits a significant static pressure gradient between the impeller region and the volute casing, and the impeller region is... Figure 11 The blue-green area of ​​the dispersion device a, the volute of the dispersion device a is the red-orange area, and there is a clear high-pressure ring at the edge of the impeller, i.e. Figure 11 In dispersion device a, the orange-red area indicates that, therefore, the static pressure distribution within the volute of the prior art impeller dispersion device a is disordered, with significant alternation between high and low pressures. In contrast, in dispersion device b of this application, the overall static pressure exhibits a gradual and uniform distribution. Figure 11 The dispersion device b has a smooth green-to-orange transition, meaning there are no obvious local high-pressure or low-pressure concentration areas. In this application, the dispersion device b adopts a structural scheme with a rotor 3 containing local asymmetry and a stator 4 with guide holes 42, which makes the static pressure distribution within the dispersion device uniform, reduces the basis of fluid pulsation, and reduces the noise of the dispersion device.

[0096] The above primarily describes the solutions of the embodiments of this application from the perspective of the method execution process. It is understood that, in order to achieve the above functions, the electronic device includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, in conjunction with the units and algorithm steps of the various examples described in the embodiments provided herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0097] This application embodiment can divide the electronic device into functional units according to the above method example. For example, each function can be divided into a separate functional unit, or two or more functions can be integrated into one processing unit. The integrated unit can be implemented in hardware or as a software functional unit. It should be noted that the unit division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods.

[0098] Given the division of functions into modules corresponding to each function, the following is combined with... Figure 12The noise reduction design device for the distributed equipment in the embodiments of this application will be described in detail. Figure 12 This is a functional unit block diagram of a noise reduction design device for a distributed device provided in an embodiment of this application. (See diagram below.) Figure 12 As shown, a noise reduction design device for a dispersion device is applied to the dispersion device, which includes a volute, a rotor and a stator disposed within the volute, wherein the rotor ring has rotor tooth grooves, the stator ring has stator tooth grooves, and the stator ring has guide holes along the circumferential direction of the dispersion device. The device includes: The acquisition unit 1201 is used to acquire the device parameters of the reference dispersion equipment and the material characteristic parameters of the material, wherein the material characteristic parameters include the material viscosity and the material type; The first determining unit 1202 is used to determine operating parameters based on the device parameters and the material viscosity, wherein the operating parameters include a target rotational speed. The second determining unit 1203 is used to determine configuration parameters and guide hole parameters based on the operating condition parameters, the device parameters and the material characteristic parameters. The configuration parameters include the rotor tooth slot configuration parameters, the number of stator tooth slots, the spacing distance between the rotor ring and the stator ring and the volute parameters of the reference dispersion equipment. The guide hole parameters include the number and diameter of the guide holes in the stator of the reference dispersion equipment. Prediction unit 1204 is used to predict noise data at the output of the reference dispersion device based on the flow guide parameters and the configuration parameters; The calculation unit 1205 is used to determine the parameters of the Helmholtz resonant cavity array based on the noise data, the material type and the preset resonant cavity calculation formula; Configuration unit 1206 is used to configure the reference dispersion device based on the flow guide hole parameters, the configuration parameters and the Helmholtz resonant cavity array parameters, to obtain the target dispersion device, and to configure the target rotation speed as the operating rotation speed of the target dispersion device.

[0099] In one possible example, the first determining unit 1202 is further configured to: obtain a preset rotational speed determination formula, the material viscosity, the nominal outer diameter of the rotor in the device parameters, and the maximum reference rotational speed corresponding to the reference dispersion device; determine the target rotational speed according to the rotational speed determination formula, the maximum reference rotational speed, and the material viscosity; determine the rotor tooth tip linear velocity according to the target rotational speed, the nominal outer diameter of the rotor, and a preset rotor tooth tip linear velocity formula; and generate the operating condition parameters according to the target rotational speed and the rotor tooth tip linear velocity.

[0100] In one possible example, the second determining unit 1203 is further configured to: acquire a preset reference tilt angle, a preset set of cogging adjustment values, the target speed within the operating parameters, the rotor tooth tip linear velocity, the rotor single tooth thickness within the device parameters, the rotor nominal outer diameter, the stator nominal outer diameter, the rated maximum material flow rate, and the material viscosity, material density, and power law exponent within the material characteristic parameters, wherein the cogging adjustment value set includes the correspondence between different layers of the stator ring and different cogging adjustment values; determine the number of rotor tooth slots based on the target speed, the rotor single tooth thickness, and the rotor nominal outer diameter; determine the volute parameters according to a preset volute design rule and the rotor nominal outer diameter; determine the generalized Reynolds number based on the rotor tooth tip linear velocity, the material viscosity, the material density, the power law exponent, and the rotor nominal outer diameter; and determine the generalized Reynolds number based on the reference tilt angle, the generalized Reynolds number, the rotor tooth tip linear velocity, the material density, and the power law exponent. The law index determines the grooving angle of each rotor slot relative to the central axis of the rotor; and integrates the rotor slot configuration parameters based on the number of rotor slots and the grooving angle of each rotor slot relative to the central axis of the rotor; and determines the number of stator slots based on the number of rotor slots and the set of slot adjustment values; and obtains the total number of stator rings of the stator; and determines the layer correction coefficient based on the total number and a preset layer correction coefficient formula; and obtains the spacing distance by substituting the layer correction coefficient, the generalized Reynolds number, and the nominal outer diameter of the stator into a preset spacing distance calculation formula; and determines the number and diameter of the guide holes based on a preset effective flow area of ​​the stator outer ring slots, a preset target slot flow velocity, and the rated maximum material flow rate; and integrates the configuration parameters based on the rotor slot configuration parameters, the number of stator slots, and the spacing distance; and integrates the guide hole parameters based on the number and the diameter.

[0101] In one possible example, the second determining unit 1203 is further configured to: determine a rotor tooth slot number threshold range based on a preset upper limit calculation formula for the number of rotor tooth slots, a lower limit calculation formula for the number of rotor tooth slots, the target rotational speed, the rotor single tooth thickness, and the rotor nominal outer diameter; determine the number of tooth slot groups and the number of tooth slots per group of a single rotor ring of the reference dispersion device based on a preset grouping rule and the rotor tooth slot number threshold range; and determine the number of rotor tooth slots based on the number of tooth slot groups and the number of tooth slots.

[0102] In one possible example, the second determining unit 1203 is further configured to: determine a linear velocity correction coefficient based on the rotor tooth tip linear velocity and a preset linear velocity correction formula; determine a generalized Reynolds number correction coefficient based on the generalized Reynolds number and a preset threshold; determine a non-Newtonian characteristic correction coefficient based on the power law exponent and a preset non-Newtonian characteristic correction coefficient formula; determine a density correction coefficient based on the material density and a preset density correction formula; determine the maximum tilt angle of the tooth grooves in each group of tooth grooves according to the reference tilt angle, the linear velocity correction coefficient, the generalized Reynolds number correction coefficient, and the density correction coefficient; determine the tilt difference between adjacent tilt angles in each group of tooth grooves according to the maximum tilt angle and the number of tooth grooves; and determine the slotting angle of each rotor tooth groove relative to the central axis of the reference dispersion device according to the maximum tilt angle and the tilt difference.

[0103] In one possible example, the second determining unit 1203 is further configured to: determine the total flow area of ​​the guide holes based on the effective flow area of ​​the stator outer ring tooth groove, the preset target tooth groove flow velocity, and the rated maximum material flow rate; and determine the quantity and the diameter of the guide holes based on the total flow area of ​​the guide holes, the preset formula for calculating the number of guide holes, and the formula for calculating the area of ​​a single guide hole.

[0104] In one possible example, the calculation unit 1205 is further configured to: determine the fluid velocity corresponding to the material based on the material type; and determine the parameters of each Helmholtz resonator based on the fluid velocity, the noise data, and the preset resonator calculation formula, to obtain the parameters of the Helmholtz resonator array composed of the parameters of each Helmholtz resonator.

[0105] In one possible example, the device further includes a data acquisition unit for: acquiring the actual viscosity of the material processed by the dispersion equipment in the current cycle during operation of the dispersion equipment; comparing the actual viscosity with the actual viscosity acquired in the previous cycle to obtain a viscosity difference; obtaining a real-time adjustment speed based on the absolute value of the viscosity difference and a preset speed adjustment formula; and adjusting the target speed based on the real-time adjustment speed.

[0106] All relevant content in each scenario involved in the above method embodiments can be referenced from the functional descriptions of the corresponding functional modules, and will not be repeated here. All of the above devices can execute the above methods.

[0107] This application provides a terminal device, which includes at least one processor, a communication interface, and a memory. The communication interface is used to send and / or receive data, the memory is used to store computer programs, and the at least one processor is used to call the computer programs stored in the memory to implement the method described above.

[0108] This application provides an electronic device including a processor and a memory. The memory stores computer program code, which includes computer instructions. When the processor executes the computer instructions, the electronic device performs the steps of the method described above.

[0109] This application provides a computer-readable storage medium storing a computer program, the computer program including program instructions that, when executed by a processor, cause the processor to perform some or all of the steps described in the method described above.

[0110] This application provides a computer program operable to cause a computer to perform some or all of the steps described in the method above. The computer program may be a software installation package.

[0111] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0112] This application also provides a computer storage medium storing a computer program for electronic data interchange, which causes a computer to perform some or all of the steps of any of the methods described in the above method embodiments, wherein the computer includes an electronic device.

[0113] This application also provides a computer program product, which includes a computer program operable to cause a computer to perform some or all of the steps of any of the methods described in the above method embodiments.

[0114] The computer program product may be a software installation package, and the aforementioned computer includes electronic devices.

[0115] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0116] In the several embodiments provided in this application, it should be understood that the disclosed methods, apparatuses, and systems can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for example, the division of units is merely a logical functional division, and other division methods may exist in actual implementation; for example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0117] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0118] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can be physically comprised separately, or two or more units can be integrated into one unit. The integrated unit described above can be implemented in hardware or in the form of hardware plus software functional units.

[0119] The integrated units implemented as software functional units described above can be stored in a computer-readable storage medium. These software functional units, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute some steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0120] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can easily conceive of variations or substitutions without departing from the spirit and scope of the present invention, and various modifications and alterations can be made, including combinations of the different functions and implementation steps described above, as well as software and hardware implementation methods, all of which are within the protection scope of the present invention.

Claims

1. A noise reduction design method for distributed equipment, characterized in that, include: Obtain the device parameters of the reference dispersion equipment and the material characteristic parameters of the material, wherein the material characteristic parameters include the material viscosity and the material type; Operating parameters are determined based on the device parameters and the material viscosity, and the operating parameters include the target rotational speed. Based on the operating parameters, the device parameters, and the material characteristic parameters, configuration parameters and guide hole parameters are determined. The configuration parameters include the rotor tooth slot configuration parameters, the number of stator tooth slots, the spacing distance between the rotor ring and the stator ring, and the volute parameters of the reference dispersion equipment. The guide hole parameters include the number and diameter of the guide holes in the stator of the reference dispersion equipment. The noise data at the output of the reference dispersion device is predicted based on the flow guide parameters and the configuration parameters. The parameters of the Helmholtz resonant cavity array are determined based on the noise data, the material type, and the preset resonant cavity calculation formula. The reference dispersion device is configured based on the flow guide hole parameters, the configuration parameters, and the Helmholtz resonant cavity array parameters to obtain the target dispersion device, and the target rotation speed is configured as the operating rotation speed of the target dispersion device.

2. The method according to claim 1, characterized in that, The determination of operating parameters based on the device parameters and the material viscosity includes: Obtain the preset rotational speed determination formula, the viscosity of the material, the nominal outer diameter of the rotor in the device parameters, and the maximum reference rotational speed corresponding to the reference dispersion device; The target rotational speed is determined based on the rotational speed determination formula, the maximum reference rotational speed, and the material viscosity. The rotor tooth tip velocity is determined based on the target rotational speed, the nominal outer diameter of the rotor, and a preset formula for rotor tooth tip velocity. The operating parameters are generated based on the target rotational speed and the rotor tooth tip linear velocity.

3. The method according to claim 2, characterized in that, The process of determining the configuration parameters and guide hole parameters based on the operating parameters, the device parameters, and the material characteristic parameters includes: The system acquires a preset reference tilt angle, a preset set of tooth cogging adjustment values, the target rotational speed within the operating parameters, the rotor tooth tip linear velocity, the rotor single tooth thickness within the device parameters, the rotor nominal outer diameter, the stator nominal outer diameter, the rated maximum material flow rate, and the material viscosity, material density, and power law exponent within the material characteristic parameters. The set of tooth cogging adjustment values ​​includes the correspondence between different layers of the stator ring and different tooth cogging adjustment values. The number of rotor tooth slots is determined based on the target rotational speed, the rotor single tooth thickness, and the rotor nominal outer diameter. The volute parameters are determined according to the preset volute design rules and the nominal outer diameter of the rotor; The generalized Reynolds number is determined based on the rotor tooth tip linear velocity, the material viscosity, the material density, the power law exponent, and the rotor nominal outer diameter. The slotting angle of each rotor tooth relative to the central axis of the rotor is determined based on the reference tilt angle, the generalized Reynolds number, the rotor tooth tip linear velocity, the material density, and the power law exponent. The rotor tooth slot configuration parameters are integrated based on the number of rotor tooth slots and the slotting angle of each rotor tooth slot relative to the central axis of the rotor; The number of stator slots is determined based on the number of rotor slots and the set of slot adjustment values. Obtain the total number of stator rings of the stator; The layer correction coefficient is determined based on the total number and the preset layer correction coefficient formula; The interval distance is obtained by substituting the layer number correction coefficient, the generalized Reynolds number, and the stator nominal outer diameter into the preset interval distance calculation formula; The number and diameter of the guide holes are determined based on the preset effective flow area of ​​the stator outer ring tooth groove, the preset target tooth groove flow velocity, and the rated maximum material flow rate. The configuration parameters are integrated based on the rotor tooth slot configuration parameters, the number of stator tooth slots, and the spacing distance; The flow guide parameters are integrated based on the quantity and the aperture.

4. The method according to claim 3, characterized in that, The determination of the number of rotor tooth slots based on the target rotational speed, the rotor single tooth thickness, and the rotor nominal outer diameter includes: The threshold range of the number of rotor tooth slots is determined based on the preset formula for calculating the upper limit of the number of rotor tooth slots, the formula for calculating the lower limit of the number of rotor tooth slots, the target speed, the thickness of a single rotor tooth, and the nominal outer diameter of the rotor. The number of tooth slot groups and the number of tooth slots in each group of a single rotor ring of the reference dispersion device are determined according to the preset grouping rules and the threshold range of the number of rotor tooth slots. The number of rotor tooth slots is determined based on the number of tooth slot groups and the number of tooth slots.

5. The method according to claim 4, characterized in that, The determination of the slotting angle of each rotor tooth relative to the central axis of the rotor based on the reference tilt angle, the generalized Reynolds number, the rotor tooth tip velocity, the material density, and the power law exponent includes: The linear velocity correction coefficient is determined based on the rotor tooth tip linear velocity and the preset linear velocity correction formula. The generalized Reynolds number correction coefficient is determined based on the generalized Reynolds number and a preset threshold. The non-Newtonian property correction coefficient is determined based on the power law exponent and the preset formula for the non-Newtonian property correction coefficient. The density correction coefficient is determined based on the material density and a preset density correction formula; The maximum tilt angle of the tooth groove in each group of tooth grooves is determined based on the reference tilt angle, the linear velocity correction coefficient, the generalized Reynolds number correction coefficient, and the density correction coefficient. The tilt difference between adjacent tilt angles within each group of tooth slots is determined based on the maximum tilt angle and the number of tooth slots. The slotting angle of each rotor tooth relative to the central axis of the reference dispersion device is determined based on the maximum tilt angle and the tilt difference.

6. The method according to claim 3, characterized in that, The determination of the number and diameter of the guide holes based on the preset effective flow area of ​​the stator outer ring groove, the preset target groove flow velocity, and the rated maximum material flow rate includes: The total flow area of ​​the guide hole is determined based on the effective flow area of ​​the stator outer ring tooth groove, the preset target tooth groove flow velocity, and the rated maximum material flow rate. The quantity and diameter of the guide holes are determined based on the total flow area of ​​the guide holes, the preset formula for calculating the number of guide holes, and the formula for calculating the area of ​​a single guide hole.

7. The method according to any one of claims 1-6, characterized in that, The determination of Helmholtz resonator array parameters based on the noise data, the material type, and the preset resonator calculation formula includes: Determine the fluid sound velocity corresponding to the material based on the material type; Based on the fluid sound velocity, the noise data, and the preset resonant cavity calculation formula, the parameters of each Helmholtz resonant cavity are determined, and the parameters of the Helmholtz resonant cavity array composed of the parameters of each Helmholtz resonant cavity are obtained.

8. The method according to any one of claims 1-6, characterized in that, After configuring the reference dispersion device based on the flow guide parameters, the configuration parameters, and the Helmholtz resonant cavity array parameters to obtain the target dispersion device, and configuring the target rotation speed as the operating rotation speed of the target dispersion device, the method further includes: During the operation of the dispersion equipment, the actual viscosity of the material processed by the dispersion equipment in the current cycle is collected; The actual viscosity is compared with the actual viscosity collected in the previous cycle to obtain the viscosity difference. The real-time adjustment speed is obtained based on the absolute value of the viscosity difference and the preset speed adjustment formula; The target rotational speed is adjusted according to the real-time rotational speed adjustment.

9. A noise reduction design device for distributed equipment, characterized in that, An apparatus for use in dispersion equipment, the dispersion equipment comprising a volute, a rotor and a stator disposed within the volute, wherein the rotor ring has rotor tooth grooves, the stator ring has stator tooth grooves, and the stator ring has guide holes along the circumferential direction of the dispersion equipment; the apparatus comprises: The acquisition unit is used to acquire the device parameters of the reference dispersion equipment and the material characteristic parameters of the material, including the material viscosity and the material type; The first determining unit is configured to determine operating parameters based on the device parameters and the material viscosity, wherein the operating parameters include a target rotational speed. The second determining unit is used to determine configuration parameters and guide hole parameters based on the operating condition parameters, the device parameters, and the material characteristic parameters. The configuration parameters include the rotor tooth slot configuration parameters, the number of stator tooth slots, the spacing distance between the rotor ring and the stator ring, and the volute parameters of the reference dispersion device. The guide hole parameters include the number and diameter of the guide holes in the stator of the reference dispersion device. A prediction unit is used to predict the noise data at the output of the reference dispersion device based on the orifice parameters and the configuration parameters. The calculation unit is used to determine the parameters of the Helmholtz resonant cavity array based on the noise data, the material type, and the preset resonant cavity calculation formula; A configuration unit is used to configure the reference dispersion device based on the flow guide hole parameters, the configuration parameters, and the Helmholtz resonant cavity array parameters, to obtain the target dispersion device, and to configure the target rotation speed as the operating rotation speed of the target dispersion device.

10. A dispersing device, characterized in that, include: The dispersion device is obtained by the noise reduction design method of the dispersion device according to any one of claims 1-8.

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