Residue recovery device for high-efficiency dairy product production

Abstract

The invention relates to the technical field of dairy product recovery, and discloses an efficient residue recovery device for dairy product production, which comprises a milk residue filter press, a decline rate regulation and control module and a controller, a pressure adjusting assembly is arranged in the milk residue filter press and is used for applying adjustable extrusion force to a filter belt, wound on a press roll, of the milk residue filter press; the decline rate regulation and control module predicts and calculates the dewatering capacity of the milk residues according to the dewatering state of the milk residues in the filter pressing process, and calculates the controlled quantity of extrusion force according to the predicted dewatering capacity, so that the pressure regulation assembly can output proper extrusion force; the pressure adjusting assembly comprises a plurality of sets of extrusion mechanisms capable of being independently adjusted. According to the invention, the decrease rate of the thickness of the residue cake is monitored in real time through the decrease rate regulation and control module, and the extrusion force of the extrusion mechanism is dynamically adjusted in combination with the influence characteristic factors calculated by the prediction algorithm unit, so that differential pressure adaptation to different types of dairy product residues is realized, and the adaptability and dehydration effect of multiple materials are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of dairy product recycling, and specifically refers to a residue recycling device for efficient dairy product production. Background Art

[0002] Dairy products, also known as cream products, refer to various foods processed from cow's milk or goat's milk and their processed products as the main raw materials, with or without the addition of appropriate vitamins, minerals, and other auxiliary materials, under the conditions required by the standard regulations. The residues of dairy products can be used as plant fertilizers or industrial raw materials after recycling. A large amount of water is contained in the residues of dairy products, and dehydration treatment is required for the residues during recycling.

[0003] Residues of different types of dairy products, such as yogurt residues, cheese residues, etc., have significant differences in physical properties, with different particle sizes, viscosities, particle densities, etc. Traditional belt filter presses usually perform dehydration operations with a fixed pressure and cannot flexibly adjust the pressure according to the characteristics of the residues. This results in incomplete dehydration of dairy product residues and reduces the recycling effect. On the other hand, as the pressure filtration process progresses, as the water in the residues is continuously squeezed out, the porosity and compaction ratio of the filter cake also change dynamically, making the dehydration quality unstable and difficult to meet the high-quality requirements for residue recycling in efficient dairy product production. For this reason, a dairy product residue recycling device capable of automatically adjusting the pressure is proposed to improve the dehydration quality and recycling effect of dairy products. Summary of the Invention

[0004] In view of the above situation, in order to solve the disadvantages in the prior art that residues of different types of dairy products have significant differences in physical properties, and traditional filter pressing devices cannot flexibly adjust the pressure values at different positions according to the properties of the dairy residues, resulting in poor dehydration quality during the recycling of dairy product residues, a residue recycling device for efficient dairy product production is proposed.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A residue recycling device for efficient dairy product production, comprising:

[0006] A dairy residue filter press, in which a pressure adjustment component is provided, and the pressure adjustment component is used to apply an adjustable extrusion pressure to the filter belt wound around the pressing roller of the dairy residue filter press;

[0007] The falling rate control module includes a thickness detection unit, a prediction algorithm unit, and a pressure parameter optimization unit. Among them, the thickness detection unit is used to detect the thickness of the slag cake on both sides of the pressing roller during the milk residue pressure filtration process and calculate the falling rate of the slag cake thickness. The prediction algorithm unit calculates the influencing characteristic factors and the control amount of the extrusion pressure according to the falling rate of the slag cake thickness. The parameter optimization unit updates the extrusion pressure based on the output parameters of the prediction algorithm unit and outputs the parameters. Among them, the influencing characteristic factor is a comprehensive parameter of the dehydration performance of the material at this moment , which includes the inherent property parameters of the material and the variable property parameters that change with the pressure filtration process ;

[0008] A controller, which receives the adjustment instructions of the falling rate control module and controls the output extrusion pressure of the pressure adjustment component;

[0009] The pressure adjustment component includes multiple groups of extrusion mechanisms. Each group of extrusion mechanisms is respectively matched with a pressing roller to extrude the filter belt, and the extrusion pressure of each extrusion mechanism can be adjusted independently.

[0010] As a further description of the above technical solution:

[0011] The thickness detection unit measures the thickness of the slag cake before and after extrusion through the detection mechanisms arranged on both sides of each pressing roller;

[0012] The thickness detection unit calculates the falling rate of the slag cake thickness according to the thickness A1 of the slag cake before extrusion and the thickness A2 of the slag cake after extrusion, and outputs the result to the prediction algorithm unit.

[0013] As a further description of the above technical solution:

[0014] The extrusion mechanism includes an extrusion driving part, a pressure roller, and a slider. The extrusion driving part is fixedly installed on the frame of the milk residue pressure filter. The slider is connected to the telescopic end of the extrusion driving part through an extrusion spring. The slider can move on the frame. The pressure roller is rotatably connected to the slider, and the pressure roller cooperates with the pressing roller to extrude the filter belt;

[0015] A pressure sensor is arranged at the output end of the extrusion driving part to detect the magnitude of the pressure value output by the extrusion driving part.

[0016] As a further description of the above technical solution:

[0017] The prediction algorithm unit discriminates the dehydration state of the milk residue according to the falling rate parameter of the slag cake thickness obtained by the thickness detection unit;

[0018] Among them, when the dehydration state of the milk residue is within the preset interval, the pressure adjustment component maintains the extrusion pressure value.

[0019] As a further description of the above technical solution:

[0020] When the dewatering state of the milk residue is not within the preset range:

[0021] The prediction algorithm unit predicts the influence characteristic factors based on the operating state parameters of the milk residue filter press, the thickness of the residue cake measured by the thickness detection unit, and the output extrusion pressure of the pressure adjustment component;

[0022] The prediction algorithm unit calculates the optimal extrusion pressure parameter according to the influence characteristic factors with the expected range of the residue cake thickness decrease rate as the constraint condition, and transmits it to the pressure parameter optimization unit. The pressure parameter optimization unit records the extrusion pressure parameter and transmits it to the controller, and the controller issues an instruction to adjust the extrusion pressure of the pressure adjustment component.

[0023] As a further description of the above technical solution:

[0024] The thickness detection unit is also used to obtain the thickness A2 after adjusting the pressure, and calculates the residue cake thickness decrease rate based on the thickness A2 after adjusting the pressure. The prediction algorithm unit discriminates the dewatering state of the milk residue after adjusting the pressure;

[0025] Among them, when the dewatering state of the milk residue after adjusting the pressure is within the preset range, the pressure adjustment component maintains the extrusion pressure value;

[0026] When the dewatering state of the milk residue after adjusting the pressure is not within the preset range, the prediction algorithm unit re-predicts the influence characteristic factors based on the residue cake thickness and the extrusion pressure after adjusting the pressure.

[0027] As a further description of the above technical solution:

[0028] The milk residue filter press includes an upper filter press component and a lower filter press component. The upper filter press component includes an upper filter belt and a roller group for driving the upper filter belt to rotate; the lower filter press component includes a lower filter belt and a roller group for driving the lower filter belt to rotate;

[0029] A plurality of pressing rollers are arranged at the overlapping part of the upper filter belt and the lower filter belt. Among them, each pressing roller is provided with a matching extrusion mechanism.

[0030] As a further description of the above technical solution:

[0031] The milk residue filter press further includes an upper tensioning cylinder matched with the upper filter belt and a lower tensioning cylinder matched with the lower filter belt. A pressure sensor is arranged on the upper tensioning cylinder for detecting the tension of the upper tensioning cylinder and the lower tensioning cylinder.

[0032] As a further description of the above technical solution:

[0033] A filter belt driving member is provided on the milk residue filter press for driving the upper filter belt and the lower filter belt to rotate.

[0034] As a further description of the above technical solution:

[0035] The detection mechanism includes a telescopic connecting rod and a rotatable cross bar. The connecting rod is telescopically installed on the frame, the cross bar rotates on the connecting rod, the cross bar is attached to the outer diameters of the pressing roller and the filter belt, and a position sensor is provided on the connecting rod for detecting the elongation of the connecting rod.

[0036] The beneficial effects achieved by the present invention with the above structure are as follows:

[0037] (1) In the present invention, by the decline rate regulation module, the decline rate of the residue cake thickness is monitored in real time. Combining with the influence characteristic factors calculated by the prediction algorithm unit, when recycling dairy product residues, the extrusion force of the extrusion mechanism can be dynamically adjusted according to the dehydration ability of the residues, realizing differential pressure adaptation for different types of dairy product residues, avoiding the problems of incomplete dehydration or over extrusion in the fixed pressure mode, and improving the adaptability to multiple materials and the dehydration quality.

[0038] (2) In the present invention, the pressure regulating component sets an independent extrusion mechanism for each pressing roller, and the thickness detection unit independently monitors and feedback controls the decline rate of the residue cake thickness in each pressing section. The filter pressing process is divided into multiple-stage dehydration stages. A lower pressure can be adopted in the initial stage to prevent pore collapse, and the pressure is gradually increased in the middle and later stages to accelerate dehydration. This not only avoids the decrease in permeability caused by too fast dehydration but also solves the problem of low efficiency caused by too slow dehydration, improving the processing efficiency while ensuring the dehydration quality;

[0039] (3) The decline rate regulation module decomposes the comprehensive parameters of the dehydration performance of the milk residue at different filter pressing positions into material inherent property parameters with relatively small changes and variable property parameters with relatively large changes , and predicts and calculates them respectively. Then, the output extrusion force of the pressure regulating component is calculated with the predicted comprehensive parameters of the dehydration performance , ensuring that the dehydration process is always in the efficient range and greatly reducing the final moisture content of the residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 FIG. is a schematic three-dimensional structure diagram of a residue recovery device for efficient dairy product production proposed by the present invention;

[0041] Figure 2 FIG. is a schematic partial structure diagram of the residue recovery device for dairy product production proposed by the present invention;

[0042] Figure 3The planar operation of the residue recovery device for dairy product production proposed by the present invention Figure 1 ;

[0043] Figure 4 It is a schematic structural diagram of the extrusion mechanism;

[0044] Figure 5 The planar operation of the residue recovery device for dairy product production proposed by the present invention Figure 2 ;

[0045] Figure 6 It is a schematic structural diagram of the pressure regulating component;

[0046] Figure 7 It is a schematic diagram of the working principle of the residue recovery device for dairy product production;

[0047] Figure 8 It is a working flowchart of the descent rate regulation module;

[0048] Figure 9 It is a schematic structural diagram of the descent rate regulation module;

[0049] Figure 10 It is a working flowchart of the prediction algorithm unit.

[0050] Legend description:

[0051] 11. First extrusion mechanism; 12. Second extrusion mechanism; 13. Third extrusion mechanism; 101. Extrusion driving part; 102. Pressing roller; 103. Slide block; 104. Extrusion spring; 21. First thickness measuring rod; 22. Second thickness measuring rod; 211. Cross bar; 212. Connecting rod; 31. Upper filter belt; 32. Lower filter belt; 33. First pressing roller; 34. Second pressing roller; 35. Third pressing roller; 36. Upper tensioning cylinder; 37. Lower tensioning cylinder; 38. Filter belt driving part; 39. Feed opening. Specific embodiments

[0052] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0053] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0054] In order to solve the problem that the traditional filtering device cannot flexibly adjust the pressure value according to the properties of dairy product residues, resulting in poor dehydration effect during the recovery of residues generated from the production of different types of dairy products and increasing the subsequent recovery cost, in the embodiments of the present application, a residue recovery device for efficient dairy product production is designed, as Figures 1 - 10 shown, which includes a milk residue filter press, a decline rate regulation module, and a controller; a pressure adjustment component is provided in the milk residue filter press, and the pressure adjustment component is used to apply an adjustable squeezing force to the filter belt wound around the pressing roller of the milk residue filter press; the decline rate regulation module includes a thickness detection unit, a prediction algorithm unit, and a pressure parameter optimization unit. Among them, the thickness detection unit is used to detect the thickness of the slag cake on both sides of the pressing roller during the milk residue filtration process and calculate the decline rate of the slag cake thickness. The prediction algorithm unit calculates the influence characteristic factor and the control amount of the squeezing force according to the decline rate of the slag cake thickness. The parameter optimization unit updates the squeezing force based on the output parameters of the prediction algorithm unit and outputs the parameters. Among them, the influence characteristic factor is a comprehensive parameter of the dehydration performance of the material at this moment , which includes the inherent property parameters of the material and the variable property parameters that change with the filtration process ; the controller receives the adjustment instruction of the decline rate regulation module and controls the output squeezing force of the pressure adjustment component; the pressure adjustment component includes multiple groups of extrusion mechanisms, and each group of extrusion mechanisms cooperates with a pressing roller to squeeze the filter belt respectively, and the squeezing force of each extrusion mechanism can be adjusted independently.

[0055] In this way, when recovering dairy product residues, the prediction algorithm unit can be used to predict the dehydration state of the residues, and the output squeezing force of the pressure adjustment component can be regulated according to the predicted dehydration state, so that the squeezing force can be adapted to the dehydration properties of the residues, thereby ensuring the dehydration effect of dairy product residues. It can automatically adjust when dealing with different types or batches of dairy product residues, ensuring the dehydration effect of dairy product residues, and thus reducing the subsequent recovery and treatment costs.

[0056] Moreover, multiple sets of extrusion mechanisms can individually apply adjustable extrusion forces, divide the pressing section of the filter belt into different segments and regulate the pressure values separately, enable the milk residue to obtain an appropriate thickness reduction rate during the pressure filtration process, avoid the phenomenon of pore collapse and reduced permeability caused by too fast dehydration speed of the milk residue during the pressure filtration process, thereby ensuring the dehydration effect of the milk residue, and at the same time prevent the too slow dehydration speed of the milk residue from resulting in low processing efficiency. The independent adjustment of each set of extrusion mechanisms enables the entire device to process dairy product residues of different properties, ensuring the stability and reliability of residue recovery.

[0057] In addition, each set of extrusion mechanisms can be individually adjusted and cooperate with the prediction algorithm unit, and can predict the comprehensive parameters of the dehydration performance of the milk residue in different pressing segments which include both the inherent property parameters of the milk residue and the variable property parameters that change with the pressure filtration process , and can accurately regulate the dehydration effect of the milk residue in different pressing segments respectively, so as to ensure the dehydration effect of the milk residue at each stage, and further improve the comprehensive dehydration effect of dairy product residues during the recovery process.

[0058] A residue recovery device for efficient dairy product production in the embodiments of the present application can be applied to the recovery and dehydration of dairy product residues, specifically but not limited to the residue recovery of dairy products such as milk tablets, cheese, and milk cakes.

[0059] In one embodiment, referring to Figure 3 、 Figure 4 and Figure 6 , the thickness detection unit measures the thickness A1 of the slag cake before being extruded and the thickness A2 after being extruded through the detection mechanisms arranged on both sides of each pressing roll; the thickness detection unit calculates the thickness reduction rate of the slag cake according to the thickness A1 of the slag cake before being extruded and the thickness A2 of the slag cake after being extruded, and outputs the result to the prediction algorithm unit;

[0060] The milk residue filter press is provided with a thickness measuring structure at each pressing roll position. The thickness measuring structure includes a first thickness measuring rod 21 and a second thickness measuring rod 22. The first thickness measuring rod 21 and the second thickness measuring rod 22 are both fixedly installed on the frame. The first thickness measuring rod 21 includes a telescopic connecting rod 212 and a rotatable cross bar 211. The connecting rod 212 is fixedly installed on the frame, and the cross bar 211 rotates on the connecting rod 212. The cross bar 211 fits on the outer diameters of the pressing roll and the filter belt. A position sensor is arranged on the connecting rod 212 to detect the elongation of the connecting rod 212. The second thickness measuring rod 22 is arranged with the same structure as the first thickness measuring rod 21;

[0061] The first thickness measuring rod 21 and the second thickness measuring rod 22 are respectively arranged on both sides of the pressing roller and the extrusion mechanism. The first thickness measuring rod 21 is used to measure the thickness A1 of the slag cake between the upper filter belt 31 and the lower filter belt 32 before being pressed, and the second thickness measuring rod 22 is used to detect the thickness A2 of the slag cake between the upper filter belt 31 and the lower filter belt 32 after being pressed. During operation, under the contraction force of the connecting rod 212, the cross bar 211 can be closely attached to the filter belt. The displacement sensor on the connecting rod 212 detects the telescopic amount of the connecting rod 212, and thus can measure the thickness of the slag cake before being pressed. The second thickness measuring rod 22 uses the same structure to measure the thickness of the slag cake after being pressed.

[0062] In one embodiment, Figure 2 — Figure 4 、 Figure 6 the extrusion mechanism includes an extrusion driving part 101, a pressing roller 102 and a slider 103. The extrusion driving part 101 is fixedly installed on the frame of the milk residue filter press. An extrusion spring 104 is connected between the slider 103 and the telescopic end of the extrusion driving part 101. The slider 103 can move on the frame, and the pressing roller 102 is rotatably connected to the slider 103. A pressure sensor is arranged at the output end of the extrusion driving part 101 for detecting the magnitude of the pressure value output by the extrusion driving part 101.

[0063] The extrusion driving part 101 receives an instruction from the controller and changes the output pressure. The telescopic end of the extrusion driving part 101 pushes the extrusion spring 104, so that the slider 103 can move towards the pressing roller, thereby adjusting the magnitude of the extrusion force between the pressing roller 102 and the pressing roller. Among them, the pressing roller 102 is of a hollow barrel structure for assisting in draining water. The circumference of the pressing roller 102 has filter holes to facilitate the outflow of water. When the output pressure of the telescopic end of the extrusion driving part 101 changes, the extrusion force between the pressing roller 102 and the pressing roller also changes accordingly.

[0064] Referring to Figure 7 — Figure 10 the prediction algorithm unit discriminates the milk residue dehydration state according to the slag cake thickness reduction rate parameter obtained by the thickness detection unit. When the milk residue dehydration state is not in the preset interval, the prediction algorithm unit predicts the influence characteristic factors based on the operating state parameters of the milk residue filter press, the slag cake thickness measured by the thickness detection unit, and the output extrusion force of the pressure adjustment component. The prediction algorithm unit calculates the optimal extrusion force parameter according to the influence characteristic factors with the expected interval of the slag cake thickness reduction rate as the constraint condition, and transmits it to the pressure parameter optimization unit. The pressure parameter optimization unit records the extrusion force parameter and transmits it to the controller, and the controller issues an instruction to adjust the extrusion force of the pressure adjustment component.

[0065] The thickness detection unit measurement is also used to obtain the thickness A2 after adjusting the pressure, and calculate the reduction rate of the slag cake thickness based on the thickness A2 after adjusting the pressure. The prediction algorithm unit discriminates the dehydration state of the milk residue after adjusting the pressure. Among them, when the dehydration state of the milk residue after adjusting the pressure is within the preset interval, the pressure adjustment component maintains the extrusion pressure value, and different preset intervals are set for each pressing roller section. When the dehydration state of the milk residue after adjusting the pressure is not within the preset interval, the prediction algorithm unit re-predicts the influencing characteristic factors based on the slag cake thickness and extrusion pressure after adjusting the pressure.

[0066] Among them, referring to Figure 10 , the prediction algorithm unit includes the following steps:

[0067] S10, set the expected reduction rate interval value of the slag cake, and obtain the working state parameters of the milk residue filter press, the output extrusion pressure of the extrusion mechanism, the thickness A1 of the milk residue before pressing, and the thickness A2 after pressing;

[0068] S20, predict the influencing characteristic factors according to the working state parameters of the milk residue filter press, the output extrusion pressure of the extrusion mechanism, and the thickness of the slag cake;

[0069] S30, calculate the magnitude of the extrusion pressure that the extrusion mechanism needs to output according to the predicted influencing characteristic factors;

[0070] S40, after the extrusion mechanism outputs a new extrusion pressure, obtain a new pressing thickness A2;

[0071] S50, judge whether the reduction rate of the slag cake thickness reaches the expected interval. If not, update the extrusion pressure value and the thickness A2 value, and then return to S20;

[0072] S60, when the reduction rate of the slag cake thickness reaches the expected interval, the extrusion mechanism maintains the current extrusion pressure;

[0073] Among them, in S20, the influencing characteristic factor is the comprehensive parameter of the dehydration performance of the material at this moment , which includes the inherent property parameters of the material and the variable property parameters that change with the filtration process ;

[0074] Among them: the comprehensive parameter of the dehydration performance at different positions The prediction calculation method is:

[0075] (1)

[0076] Among them, ɑ is the proportion of the influence weight of the inherent property parameters of the material on the comprehensive parameter of the dehydration performance, which changes with the number of pressing rollers passed during the pressing process and is a preset value;

[0077] The inherent property parameters of the material After simplifying the model, the following is adopted:

[0078] The simulation prediction is obtained through:

[0079] Among them, is the reduction rate of the whey residue thickness ;

[0080] and k are both constant coefficients, C and are constants;

[0081] represents the comprehensive influence ability of the properties of the material itself (such as particle size, viscosity, etc.) on the dehydration ability;

[0082] Variable property parameter of the material After simplifying the model, the following is adopted:

[0083] The simulation prediction is obtained through:

[0084] Among them, N is the number of pressing rollers passed through, P is the tension force of the tension cylinder, and are both constant coefficients, is the reduction rate of the whey residue thickness ; represents the comprehensive influence ability of the changes in porosity, compaction ratio, compressibility, etc. of the material during the dehydration process on the dehydration ability;

[0085] Substituting it into formula (1), the comprehensive parameter of the dehydration performance of the material at this moment is obtained ;

[0086] Among them, the comprehensive parameter of the dehydration performance represents the ability of the filter residue at this moment, and its relationship with the extrusion force is expressed as:

[0087] (2)

[0088] Among them is a constant coefficient. Substituting the average value of the expected interval of the reduction rate into formula (2), the extrusion force F value can be solved, and then the control amount of the extrusion force is obtained;

[0089] The prediction algorithm unit is based on the obtained comprehensive parameter of the dehydration performance Calculate the control amount of the extrusion pressure, change the magnitude of the output extrusion pressure of the extrusion mechanism, so that the milk residue is within the optimal dehydration range during the dehydration process, avoid the phenomenon of pore collapse and decreased permeability caused by too fast dehydration speed of the milk residue during the pressure filtration process, thereby ensuring the dehydration effect of the milk residue, and at the same time preventing the low processing efficiency caused by too slow dehydration speed of the milk residue.

[0090] Refer to Figure 8 , the decline rate regulation module includes the following steps:

[0091] B10, the thickness detection unit obtains the thickness A1 of the residue cake before pressing and the thickness A2 of the residue cake after pressing, and calculates the decline rate of the residue cake thickness in the current state;

[0092] B20, the prediction algorithm unit determines whether the current decline rate of the residue cake thickness is within the preset interval. If the current decline rate of the residue cake thickness is within the preset interval, the extrusion mechanism maintains the current output extrusion pressure;

[0093] B30, if the current decline rate of the residue cake thickness is not within the preset interval, the prediction algorithm unit calculates the influence characteristic factor according to the decline rate of the milk cake thickness, and calculates the control amount of the extrusion pressure according to the influence characteristic factor;

[0094] B40, the pressure parameter optimization unit records the new control amount of the extrusion pressure, and drives the pressure regulating component through the controller to change the output extrusion pressure value;

[0095] B50, the thickness detection unit obtains the new thickness A2 of the residue cake after pressing, and returns to B10;

[0096] In one embodiment, refer to Figures 1 - 6 , the milk residue filter press includes an upper filter press component and a lower filter press component. The upper filter press component includes an upper filter belt 31 and a roller group for driving the upper filter belt 31 to rotate; the lower filter press component includes a lower filter belt 32 and a roller group for driving the lower filter belt 32 to rotate;

[0097] A plurality of pressing rollers are arranged at the overlapping part of the upper filter belt 31 and the lower filter belt 32. Among them, each pressing roller is provided with a matching extrusion mechanism; the milk residue filter press also includes an upper tensioning cylinder 36 matched with the upper filter belt 31 and a lower tensioning cylinder 37 matched with the lower filter belt 32. Pressure sensors are arranged on both the upper tensioning cylinder 36 and the lower tensioning cylinder 37; a filter belt driving member 38 is arranged on the milk residue filter press for driving the upper filter belt 31 and the lower filter belt 32 to rotate. The filter belt driving member 38 drives the rollers of the upper filter belt 31 and the rollers of the lower filter belt 32 to rotate respectively, and the rotation directions of the rollers of the upper filter belt 31 and the rollers of the lower filter belt 32 are opposite;

[0098] In a specific embodiment, three sets of pressing rollers are provided, namely a first pressing roller 33, a second pressing roller 34, and a third pressing roller 35, and three sets of first pressing mechanisms 11, second pressing mechanisms 12, and third pressing mechanisms 13 that cooperate with the pressing rollers; among them, the first pressing mechanism 11 cooperates with the first pressing roller 33, the second pressing mechanism 12 cooperates with the second pressing roller 34, and the third pressing mechanism 13 cooperates with the third pressing roller 35 to press and dehydrate the milk residue in sections; the first pressing mechanism 11, the second pressing mechanism 12, and the third pressing mechanism 13 can each independently adjust the magnitude of the pressing force.

[0099] To more clearly understand the working process of a residue recovery device for efficient dairy product production according to an embodiment of the present application, refer to Figures 1 - 10 , and the following describes it with a specific embodiment:

[0100] Pour the residue from dairy product production at the feeding port 39 onto the upper filter belt 31. When the residue moves on the top of the upper filter belt 31, first, a part of the water is discharged under the action of gravity. Refer to Figure 5 , the residue moves towards Figure 5 the left side of the device in the figure. When the residue falls on the lower filter belt 32, it gradually moves to the right and is sandwiched between the upper filter belt 31 and the lower filter belt 32;

[0101] The upper tension cylinder 36 applies a tension force to the upper filter belt 31, and the lower tension cylinder 37 applies a tension force to the lower filter belt 32. The milk residue is sandwiched between the overlapping parts of the upper filter belt 31 and the lower filter belt 32. Under the combined action of the tension force of the filter belt and the pressing force of the pressing roller, the residue is gradually dehydrated to form a relatively dry recovered product. During the pressure filtration process, the first pressing mechanism 11 applies a pressing force to the filter belt wound around the first pressing roller 33, the second pressing mechanism 12 applies a pressing force to the filter belt wound around the second pressing roller 34, and the third pressing mechanism 13 applies a pressing force to the filter belt wound around the third pressing roller 35. The three pressing mechanisms are controlled independently, and each of the three pressing mechanisms is independently set with a corresponding desired range, so that the milk residue maintains the best thickness reduction rate during different pressure filtration processes, avoiding premature hardening due to too rapid thickness reduction, which affects the dehydration effect, and at the same time ensuring the dehydration efficiency of the device;

[0102] Among them, when adjusting the output extrusion pressure of the extrusion mechanism, first, the thickness detection unit measures the thickness A1 between the two filter belts on one side of the pressing roller and the thickness A2 between the two filter belts after pressing on the other side of the pressing roller respectively, and then obtains the slag cake thickness reduction rate on one pressing roller. When the slag cake thickness reduction rate is not within the desired range, the prediction algorithm unit predicts the influence characteristic factors of the slag cake dewatering efficiency according to the operating parameters of the device, and changes the output extrusion pressure of the extrusion mechanism according to the predicted influence characteristic factors. After the output extrusion pressure of the extrusion mechanism is changed, the thickness detection unit obtains the new A2, and the prediction algorithm unit then judges whether the new slag cake thickness reduction rate is within the preset range according to the new A2, so as to continuously iterate and update the output extrusion pressure of the extrusion mechanism until the slag cake thickness reduction rate at this pressing roller reaches the desired range.

[0103] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0104] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0105] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A residue recovery device for efficient dairy product production, characterized in that, Comprising: A whey filter press, in which a pressure regulating component is provided, and the pressure regulating component is used to apply an adjustable squeezing pressure to the filter belt wound around the pressing roller of the whey filter press; The falling rate control module includes a thickness detection unit, a prediction algorithm unit, and a pressure parameter optimization unit. Among them, the thickness detection unit is used to detect the thickness of the slag cake on both sides of the pressing roller during the milk residue filtration process and calculate the falling rate of the slag cake thickness. The prediction algorithm unit calculates the control amount of the influence characteristic factor and the extrusion pressure according to the falling rate of the slag cake thickness. The parameter optimization unit updates the extrusion pressure based on the output parameters of the prediction algorithm unit and outputs the parameters. Among them, the influence characteristic factor is a comprehensive parameter of the dehydration performance of the material at this moment , which includes the inherent property parameters of the material and the variable property parameters that change with the filtration process ; A controller, which receives the adjustment instruction of the descent rate control module and controls the output squeezing pressure of the pressure regulating component; The pressure regulating component includes multiple groups of extrusion mechanisms, and each group of the extrusion mechanisms cooperates with a pressing roller to squeeze the filter belt, and the squeezing pressure of each extrusion mechanism can be adjusted independently.

2. The residue recovery device for efficient dairy product production according to claim 1, characterized in that, The thickness detection unit measures the thickness of the residue cake before and after extrusion through the detection mechanisms arranged on both sides of each pressing roller; The thickness detection unit calculates the thickness reduction rate of the residue cake based on the thickness A1 of the residue cake before extrusion and the thickness A2 of the residue cake after extrusion, and outputs the result to the prediction algorithm unit.

3. The residue recovery device for efficient dairy product production according to claim 2, characterized in that, The extrusion mechanism includes an extrusion driving part, a pressure roller and a slider. The extrusion driving part is fixedly installed on the frame of the whey filter press. A compression spring is connected between the slider and the telescopic end of the extrusion driving part. The slider can move on the frame. The pressure roller is rotatably connected to the slider, and the pressure roller cooperates with the pressing roller to squeeze the filter belt; A pressure sensor is arranged at the output end of the extrusion driving part for detecting the magnitude of the pressure value output by the extrusion driving part.

4. The residue recovery device for efficient dairy product production according to claim 3, characterized in that, The prediction algorithm unit discriminates the whey dehydration state according to the residue cake thickness reduction rate parameter obtained by the thickness detection unit; Wherein, when the whey dehydration state is within a preset range, the pressure regulating component maintains the squeezing pressure value.

5. The residue recovery device for efficient dairy product production according to claim 4, characterized in that When the whey dehydration state is not within the preset range: The prediction algorithm unit predicts the influence characteristic factors based on the operating state parameters of the whey filter press, the residue cake thickness measured by the thickness detection unit, and the output squeezing pressure of the pressure regulating component; The prediction algorithm unit calculates the optimal squeezing pressure parameter according to the influence characteristic factors with the expected range of the residue cake thickness reduction rate as the constraint condition, and transmits it to the pressure parameter optimization unit. The pressure parameter optimization unit records the squeezing pressure parameter and transmits it to the controller, and the controller issues an instruction to adjust the squeezing pressure of the pressure regulating component.

6. The residue recovery device for efficient dairy product production according to claim 5, characterized in that The thickness detection unit is also used to obtain the thickness A2 after adjusting the pressure, and calculates the residue cake thickness reduction rate based on the thickness A2 after adjusting the pressure. The prediction algorithm unit discriminates the whey dehydration state after adjusting the pressure; Wherein, when the whey dehydration state after adjusting the pressure is within the preset range, the pressure regulating component maintains the squeezing pressure value; When the whey dehydration state after adjusting the pressure is not within the preset range, the prediction algorithm unit re-predicts the influence characteristic factors based on the residue cake thickness and the squeezing pressure after adjusting the pressure.

7. The residue recovery device for efficient dairy product production according to claim 6, characterized in that, The whey filter press includes an upper filter press component and a lower filter press component. The upper filter press component includes an upper filter belt and a roller group for driving the upper filter belt to rotate; the lower filter press component includes a lower filter belt and a roller group for driving the lower filter belt to rotate; A plurality of pressing rollers are arranged at the overlapping part of the upper filter belt and the lower filter belt, and each pressing roller is provided with a cooperating pressing mechanism.

8. The residue recovery device for efficient dairy product production according to claim 7, characterized in that, The dregs-of-milk filter press further includes an upper tensioning cylinder cooperating with the upper filter belt and a lower tensioning cylinder cooperating with the lower filter belt. A pressure sensor is arranged on the upper tensioning cylinder for detecting the tensioning forces of the upper tensioning cylinder and the lower tensioning cylinder.

9. The residue recovery device for efficient dairy product production according to claim 8, characterized in that, A filter belt driving member is arranged on the dregs-of-milk filter press for driving the upper filter belt and the lower filter belt to rotate.

10. The residue recovery device for efficient dairy product production according to claim 9, characterized in that, The detection mechanism includes a telescopic connecting rod and a rotatable cross bar. The connecting rod is telescopically installed on the frame, the cross bar rotates on the connecting rod, the cross bar is attached to the outer diameters of the pressing roller and the filter belt, and a position sensor is arranged on the connecting rod for detecting the elongation of the connecting rod.

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