Raw material mixing device for cheese preparation

Abstract

The invention relates to the technical field of raw material mixing devices, in particular to a raw material mixing device for cheese preparation. Comprising a kettle cover and a kettle body, a folding frame is installed in the kettle body in a sliding mode, a transmission system is arranged on the kettle cover, a differential rotating shaft barrel and a rotating frame are installed on the transmission system in a transmission mode, a sliding frame is installed on the rotating frame in a sliding mode, and a reciprocating driving system and a variable frequency driving system which are in linkage with the shaft barrel are arranged on the rotating frame. The reciprocating stroke and the reciprocating frequency of the sliding frame are circularly switched between two modes, an input shaft is rotationally installed on the sliding frame, and the variable-frequency driving system drives the input shaft to alternately rotate forwards and backwards and rotate at a variable speed. The three-dimensional dynamic stirring device has the beneficial effects that through cooperative linkage of the transmission system, the variable frequency driving system and the reciprocating driving system, a three-dimensional dynamic stirring space is constructed, and the problems of raw material layering and mixing dead angles caused by single stirring direction and fixed track of a traditional device are solved.

Description

Technical Field

[0001] The invention relates to the technical field of raw material mixing devices, in particular to a raw material mixing device for cheese preparation. Background Art

[0002] As a nutritious and uniquely flavored fermented dairy product, cheese occupies an important position in the global food market. Its preparation process involves the precise mixing of multiple raw materials, including fresh milk, lactic acid bacteria starter, rennet, salt, etc. The mixing effect directly affects the texture, taste, flavor and shelf life of the cheese. With the scale and automation development of the cheese industry, traditional manual stirring or simple mixing equipment can no longer meet production needs. Efficient and precise raw material mixing devices have become the focus of industry research.

[0003] However, the existing cheese mixing device has the following technical problems when used: 1. The stirring motion mode is single, the mixing uniformity is low, the stirring coverage is limited, and there are mixing dead corners: 2. The adaptability of stirring intensity is poor, affecting the quality of the finished product, the opening and closing and cleaning efficiency of the equipment is low, and the raw material recovery rate is insufficient: 3. The mixing force has a single form of action and the refinement effect is insufficient; Based on this, the present invention provides a raw material mixing device for cheese preparation to solve the problems raised in the above background technology. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art and provides a raw material mixing device for cheese preparation to solve the problems of the existing cheese mixing device, such as a single stirring motion mode, low mixing uniformity, limited stirring coverage, the existence of mixing dead corners, poor adaptability of stirring intensity, affecting the quality of the finished product, low equipment opening and closing and cleaning efficiency, and insufficient raw material recovery rate.

[0005] The technical solution of the present invention for solving the above technical problems is as follows: a raw material mixing device for cheese preparation, comprising a kettle cover and a kettle body, a folding frame being slidably installed in the kettle body, a transmission system being provided on the kettle cover, a shaft cylinder and a rotating frame being transmission-installed with a differential rotation on the transmission system, a slide being slidably installed on the rotating frame and provided with a reciprocating drive system and a variable frequency drive system linked with the shaft cylinder, the variable frequency drive system driving the slide to reciprocate left and right, the reciprocating stroke and reciprocating frequency of the slide being cyclically switched in two modes, an input shaft being rotatably installed on the slide, the variable frequency drive system driving the input shaft to rotate alternately forward and reverse and at a variable speed, a reciprocating frame which can reciprocate up and down being transmission-connected to the reciprocating drive system, the displacement frequency and displacement stroke of the reciprocating frame being cyclically switched in three modes, a reciprocating frame being rotationally installed with an input shaft The rotary disk is linked to the input shaft, and a group of stirring plates are provided under the rotary disk. Stirring springs are installed between the rotary disk and adjacent stirring plates and between every two stirring plates. Four stirring shafts are rotatably installed on each stirring plate, and a first torsion spring is provided at the rotating connection between the stirring shaft and the stirring plate. A paddle is installed on each stirring shaft, and a first steel rope is wound between every two adjacent stirring shafts in the vertical direction. The four stirring shafts on the top stirring plate are wound with a second steel rope, and each second steel rope is fixedly connected to the rotary disk. A positioning block is rotatably installed on the bottom stirring plate, and the positioning block is slidably connected to the folding frame. A reel is rotatably installed on the rotating frame, and a second torsion spring is provided at the rotating connection between the reel and the rotating frame. Four stirring belts are wound on the reel, and each stirring belt is fixedly connected to the folding frame. A winch system for driving the folding frame to rise and fall is provided on the kettle cover.

[0006] The beneficial effects of the present invention are: 1. The present invention creates a three-dimensional dynamic mixing space through the coordinated linkage of a transmission system, a variable frequency drive system, and a reciprocating drive system. This solves the problems of raw material stratification and mixing dead zones caused by the single stirring direction and fixed trajectory of conventional devices. Specifically, a servo motor drives the shaft barrel and the rotating frame to rotate at differential speeds to generate the basic power. The variable frequency drive system controls the carriage to perform two modes of reciprocating motion in the horizontal direction, dynamically changing the position of the input shaft. Simultaneously, the reciprocating drive system drives the reciprocating frame to perform three modes of reciprocating motion in the vertical direction, creating a triple mixing effect of horizontal diffusion, vertical convection, and multi-directional shear. Combined with the elastic connection of the stirring plate below the rotating disk via a stirring spring, the "wave-like" angle change of the stirring shaft via steel rope linkage, and the turbulence enhancement effect of the stirring plate spoiler holes and the stirring belt liquid permeability holes, the raw material coverage area is expanded from the traditional single circle to an elliptical shape, improving mixing uniformity. This effectively prevents stratification and sedimentation, especially for raw materials with large density differences such as milk fat and lactic acid bacteria, and for raw materials containing particulate auxiliary materials, and eliminates mixing dead zones at the edges of the kettle.

[0007] 2. The present invention breaks through the dual bottlenecks of "single-speed stirring" and "fixed structure difficult to clean" of traditional devices through differential transmission and folding structure design. On the one hand, the non-ratio meshing design of the fan ring and the differential gear in the transmission system converts the constant speed of the servo motor into a periodic speed difference between the large vertical shaft and the small vertical shaft, and then dynamically adjusts the displacement parameters of the slide and the reciprocating frame, so that the stirring intensity can adapt to the state of the raw materials. On the other hand, the winch system drives the folding frame to rise and fall. During mixing operations, it is unfolded to limit the radial displacement of the stirring plate. During cleaning, it is retracted to the bottom of the kettle cover to completely expose the kettle body space. In conjunction with the cleaning nozzle for cleaning the annular cavity, the single cleaning time is shortened, the raw material recovery rate is improved, and the raw material waste and labor maintenance costs are significantly reduced.

[0008] 3. The present invention breaks through the problem of the single mixing force form caused by the "rigidly fixed blades" of traditional devices through the composite design of elastic connection, steel rope linkage and dynamic angle adjustment. Specifically, when the turntable rotates, the stirring plate stretches the stirring spring due to centrifugal force, and the top stirring shaft is deflected first by the traction of the second steel rope. The first steel rope pulls the lower stirring shaft to form a "wave-like" angle change in sequence, so that the blades simultaneously apply shearing, stretching and extrusion forces to the raw materials. Combined with the longitudinal cutting of the raw materials by the stirring belt, the particle refinement of the raw materials is improved, especially for cheese with added fruit particles, nuts and other auxiliary materials, which can avoid particle agglomeration and ultimately improve the delicate taste of the finished product. This design not only solves the problem of insufficient refinement caused by the single mixing force form of traditional devices, but also realizes a technological leap from "passive stirring" to "active multi-directional regulation" through the action of dynamic force field.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] As a preferred technical solution of the present invention, it also includes a base frame, which is fixedly connected to the kettle body, a PLC controller is installed on the kettle body, a vertically arranged screw lifting module is installed on the base frame, a lifting frame is transmission-connected to the screw lifting module, the lifting frame is fixedly connected to the kettle cover, a feed valve connected to its inner cavity is installed on the kettle body, a discharge valve is connected to the bottom end of the kettle body, and a heating jacket is provided on the kettle body.

[0011] As a preferred technical solution of the present invention, the transmission system includes a servo motor installed on the kettle cover, a rotating shaft is provided on the rotating frame, the rotating shaft is rotatably connected to the shaft cylinder through a bearing, and the shaft cylinder is rotatably connected to the kettle cover through a bearing, the output shaft end of the servo motor is connected to two first transmission toothed belts, and the two first transmission toothed belts are respectively connected to the shaft cylinder and the rotating shaft, and the shaft cylinder is provided with two sector gear rings, and the two sector gear rings have different heights in the vertical direction, and the two sector gear rings are 180° staggered on the shaft cylinder, and the center angle corresponding to the effective meshing section on one of the sector gear rings is 100°, and the center angle corresponding to the effective meshing section on the other sector gear ring is 150°, and a large vertical shaft and a small vertical shaft are respectively rotatably installed on the rotating frame, and two differential gears are installed on the large vertical shaft and the small vertical shaft, and the two differential gears are respectively adapted to mesh with the two sector gear rings, and the radii of the two differential gears and the two sector gear rings are different.

[0012] As a preferred technical solution of the present invention, the frequency conversion drive system includes two translation screws and a square shaft rotatably connected to the rotating frame, and a third torsion spring is provided at the rotation connection between the two translation screws and the rotating frame. A second transmission toothed belt is installed on the square shaft, and the two translation screws are transmission-connected to the second transmission toothed belt. The two translation screws are transmission-connected to the slide, and the small vertical shaft and the square shaft are both installed with a first bevel gear, and the two first bevel gears are orthogonally meshed. A through shaft is rotatably installed on the slide, and the interior of the through shaft is fixed with a through groove with openings at both ends and slidingly connected to the square shaft. Second bevel gears are installed on the through shaft and the input shaft, and the two second bevel gears are orthogonally meshed.

[0013] As a preferred technical solution of the present invention, the reciprocating drive system includes a flat shaft rotatably connected to the rotating frame, the flat shaft and the large vertical shaft are both installed with a third bevel gear, the two third bevel gears are orthogonally meshed, the flat shaft is installed with a rotating wheel, and the rotating wheel is alternately provided with three toothed portions and toothless reset portions, the transmission stroke of the three toothed portions increases in the clockwise direction, and the center angles corresponding to the three toothless reset portions are the same. An L-shaped gear rack is slidably installed on the rotating frame, the L-shaped gear rack is slidably connected to the reciprocating frame, the three toothed portions are alternately meshed with the L-shaped gear rack, a group of return springs are installed between the L-shaped gear rack and the rotating frame, and a vertically arranged limit guide plate is installed on the top surface of the reciprocating frame, and the limit guide plate is slidably connected to the slide.

[0014] As a preferred technical solution of the present invention, the L-shaped gear rack is respectively provided with a vertical guide groove and a horizontal guide groove, the rotating rack is fixedly provided with a vertical guide block slidably connected to the vertical guide groove, and the reciprocating rack is fixedly provided with a horizontal guide block slidably connected to the horizontal guide groove.

[0015] As a preferred technical solution of the present invention, a sleeve shaft is fixedly installed at the top axis position of the turntable, and an input groove with a top opening fixedly opened inside the sleeve shaft and slidingly connected to the input shaft is provided. The cross-sections of the input groove and the input shaft are both regular hexagons.

[0016] As a preferred technical solution of the present invention, the hoisting system includes a traction roller and two guide wheels rotatably connected to the lifting frame, a traction rope is wound around the traction roller, and the two guide wheels are both transmission-connected to the traction rope. A rotating pull head is provided at the bottom end of the traction rope, and the rotating pull head is rotatably connected to the folding frame.

[0017] As a preferred technical solution of the present invention, the axis of the stirring shaft is perpendicular to the rotation axis of the turntable, the stirring plate is evenly distributed with flow disturbance holes, the stirring spring and stirring belt are both made of stainless steel, the paddle is made of titanium alloy, and the stirring belt is evenly distributed with a group of liquid-permeable holes.

[0018] As a preferred technical solution of the present invention, it also includes a cleaning ring cavity opened in the kettle cover, a liquid inlet joint connected to the cleaning ring cavity is installed on the kettle cover, and a group of cleaning nozzles connected to the cleaning ring cavity are installed in the kettle cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a raw material mixing device for cheese preparation according to the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the cleaning ring cavity and the traction rope of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the local enlarged structure at A in the middle; Figure 4 For the present invention Figure 2 Schematic diagram of the local enlarged structure at B in the middle; Figure 5 For the present invention Figure 2 Schematic diagram of the local enlarged structure at C in the middle; Figure 6 This is a schematic structural diagram of the fan gear ring and stirring belt of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the local enlarged structure at D in the middle; Figure 8 It is a structural schematic diagram of the limiting guide plate and the reciprocating frame of the present invention; Figure 9 This is a schematic structural diagram of the large vertical shaft and the fan gear ring of the present invention; Figure 10 For the present invention Figure 9 Schematic diagram of the local enlarged structure at E in the middle; Figure 11Schematic diagram of the structure of the translation screw of the present invention; Figure 12 For the present invention Figure 11 Schematic diagram of the local enlarged structure at F in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Kettle cover; 2. Kettle body; 3. Folding frame; 4. Shaft cylinder; 5. Rotating frame; 6. Slide; 7. Input shaft; 8. Reciprocating frame; 9. Rotating disk; 10. Stirring plate; 11. Stirring spring; 12. Stirring shaft; 13. First torsion spring; 14. Paddle; 15. First steel rope; 16. Second steel rope; 17. Positioning block; 18. Reel; 19. Second torsion spring; 20. Stirring belt; 21. Base frame; 22. Screw lifting module; 23. Lifting frame; 24. PLC controller; 25. Servo Servo motor; 26. Rotating shaft; 27. Sector gear ring; 28. Large vertical shaft; 29. Small vertical shaft; 30. Differential gear; 31. Translation screw; 32. Square shaft; 33. Third torsion spring; 34. Through shaft; 35. Flat shaft; 36. Rotating wheel; 37. Toothed part; 38. Toothless reset part; 39. L-shaped gear rack; 40. Return spring; 41. Sleeve shaft; 42. Traction roller; 43. Guide wheel; 44. Traction rope; 45. Cleaning ring cavity; 46. Liquid inlet joint; 47. Limit guide plate. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] The present invention provides the following preferred embodiments like Figure 1-12 As shown, a raw material mixing device for cheese preparation includes a kettle cover 1 and a kettle body 2; The kettle body 2 further includes a base frame 21, the base frame 21 is fixedly connected to the kettle body 2, a PLC controller 24 is installed on the kettle body 2, a vertically arranged screw lifting module 22 is installed on the base frame 21, a lifting frame 23 is transmission-connected to the screw lifting module 22, the lifting frame 23 is fixedly connected to the kettle cover 1, a feed valve connected to the inner cavity of the kettle body 2 is installed on the kettle body 2, a discharge valve is connected to the bottom end of the kettle body 2, and a heating jacket is provided on the kettle body 2; The base frame 21 provides stable support for the device. The screw lifting module 22 drives the lifting frame 23 to realize automatic separation and closing of the kettle cover 1 and the kettle body 2, which is convenient for equipment maintenance and internal cleaning. The feed valve and the discharge valve are respectively arranged at the upper and lower ends of the kettle body 2. In conjunction with the PLC controller 24, the raw materials can be accurately and quantitatively added and the mixed materials can be quickly discharged, thereby improving production continuity. The heating jacket is arranged around the kettle body 2. By introducing a constant temperature medium, the temperature of the raw materials during the mixing process can be controlled. This solves the problems of the traditional cheese raw material mixing device that is inconvenient to open and close and the temperature regulation lag that causes the raw materials to coagulate or deteriorate, and significantly improves the quality stability of cheese preparation. A folding frame 3 is slidably installed in the kettle body 2, and a transmission system is provided on the kettle cover 1. The transmission system is transmission-mounted with a differentially rotating shaft cylinder 4 and a rotating frame 5. A slide 6 is slidably installed on the rotating frame 5 and is provided with a reciprocating drive system and a variable frequency drive system linked to the shaft cylinder 4. The variable frequency drive system drives the slide 6 to reciprocate left and right, and the reciprocating stroke and reciprocating frequency of the slide 6 are cyclically switched in two modes. An input shaft 7 is rotatably installed on the slide 6, and the variable frequency drive system drives the input shaft 7 to rotate alternately forward and reverse and at a variable speed. A reciprocating frame 8 that can reciprocate up and down is transmission-connected to the reciprocating drive system, and the displacement frequency and displacement stroke of the reciprocating frame 8 are cyclically switched in three modes; The transmission system includes a servo motor 25 mounted on the kettle cover 1, a rotating shaft 26 is provided on the rotating frame 5, the rotating shaft 26 is rotatably connected to the shaft cylinder 4 through a bearing, and the shaft cylinder 4 is rotatably connected to the kettle cover 1 through a bearing. The output shaft end of the servo motor 25 is connected to two first transmission toothed belts, and the two first transmission toothed belts are respectively connected to the shaft cylinder 4 and the rotating shaft 26. The shaft cylinder 4 is provided with two sector gear rings 27, and the two sector gear rings 27 have different heights in the vertical direction. The two sector gear rings 27 are staggered 180 degrees on the shaft cylinder 4. The effective meshing section on one sector gear ring 27 corresponds to a central angle of 100 degrees, while the effective meshing section on the other sector gear ring 27 corresponds to a central angle of 150 degrees. A large vertical shaft 28 and a small vertical shaft 29 are rotatably mounted on the rotating frame 5. Two differential gears 30 are mounted on each of the large vertical shaft 28 and the small vertical shaft 29. The two differential gears 30 are respectively adapted to mesh with the two sector gear rings 27. The radii of the two differential gears 30 and the two sector gear rings 27 are different. The transmission system drives the shaft cylinder 4 and the rotating frame 5 to rotate at a differential speed, and cooperates with the frequency conversion drive system to control the slide 6 to perform two modes of reciprocating motion along the axis of the kettle cover 1. At the same time, the reciprocating drive system drives the reciprocating frame 8 to perform three modes of reciprocating motion along the axis of the kettle cover 1, forming a three-dimensional dynamic stirring space; In the working process, when the servo motor 25 is started, the differential rotation of the shaft cylinder 4 and the rotating frame 5 first forms the basic stirring power. The horizontal reciprocating motion of the slide 6 causes the position of the input shaft 7 to change dynamically in the horizontal direction. In conjunction with the alternating forward and reverse and variable speed rotation of the input shaft 7, the rotary disk 9 is driven to generate multi-directional torque, while the vertical reciprocating motion of the reciprocating frame 8 causes the height position of the rotary disk 9 to change periodically. Finally, through the combination of the stirring plate 10, the stirring shaft 12 and the paddle 14 below the rotary disk 9, the triple mixing effect of horizontal diffusion, vertical convection and multi-directional shearing of the raw materials in the kettle body 2 is achieved. This design effectively solves the problems of raw material stratification and uneven mixing caused by the single stirring direction and fixed motion trajectory of traditional cheese raw material mixing devices. This is especially true for raw materials with large density differences such as milk fat and lactic acid bacteria used in cheese preparation. It can significantly improve mixing uniformity and shorten mixing time. At the same time, the dynamic stirring trajectory reduces raw material adhesion to the kettle wall, making subsequent cleaning easier. The transmission system drives two first transmission toothed belts through the servo motor 25 to respectively drive the shaft cylinder 4 and the rotating shaft 26 to rotate. The two fan gear rings 27 on the shaft cylinder 4, which are set at different heights and offset by 180 degrees, are adapted to mesh with the differential gears 30 on the large vertical shaft 28 and the small vertical shaft 29 to achieve differential rotation of the shaft cylinder 4 and the rotating frame 5. During the working process, when the servo motor 25 outputs a constant speed, the non-uniform meshing relationship between the fan gear ring 27 and the differential gear 30 will cause a periodic speed difference between the large vertical shaft 28 and the small vertical shaft 29, and then transmit this speed difference to the slide 6 and the reciprocating frame 8 through subsequent transmission components, forming a dynamically changing stirring parameter. This design breaks through the limitation of "single-speed stirring" of traditional mixing devices. Through differential transmission, the stirring system automatically adjusts the stirring intensity during operation, which can not only ensure sufficient shearing of high-viscosity raw materials, but also avoid the generation of bubbles in low-viscosity raw materials due to excessive stirring. The uniformity of the milk fat distribution of the mixed raw materials is improved, and the energy consumption of the equipment is lower than that of traditional devices. The frequency conversion drive system includes two translation screws 31 and a square shaft 32 rotatably connected to the rotating frame 5. The rotation connection between the two translation screws 31 and the rotating frame 5 is provided with a third torsion spring 33. A second transmission toothed belt is installed on the square shaft 32. The two translation screws 31 are both transmission-connected to the second transmission toothed belt. The two translation screws 31 are both transmission-connected to the slide 6. The small vertical shaft 29 and the square shaft 32 are both installed with a first bevel gear, and the two first bevel gears are orthogonally meshed. A through shaft 34 is rotatably installed on the slide 6. The interior of the through shaft 34 is fixed with a through groove with openings at both ends and slidingly connected to the square shaft 32. The through shaft 34 and the input shaft 7 are both installed with a second bevel gear, and the two second bevel gears are orthogonally meshed. The variable frequency drive system drives the square shaft 32 to rotate through the first bevel gear on the small vertical shaft 29. The square shaft 32 synchronously drives the two translation screws 31 to rotate through the second transmission belt. The transmission connection between the translation screws 31 and the slide 6 and the reset function of the third torsion spring 33 are coordinated to realize the reciprocating motion of the slide 6 in the direction perpendicular to the axis of the kettle cover 1. During the working process, when the speed of the small vertical shaft 29 changes due to the differential transmission, the speed of the square shaft 32 changes synchronously, thereby changing the driving frequency of the translation screw 31, so that the reciprocating frequency and stroke of the slide 6 are dynamically adjusted. At the same time, the through shaft 34 is slidably connected to the square shaft 32 through the through groove, ensuring that the input shaft 7 of the slide 6 can still receive the torque of the square shaft 32 through the second bevel gear during the displacement process, maintaining the alternating forward and reverse and variable speed rotation of the input shaft 7. This design solves the pain point of "fixed stirring range" of traditional mixing devices. The dynamic displacement of the slide 6 expands the coverage area of the blade 14 from a single circle to an ellipse, thereby increasing the mixing coverage area and effectively eliminating the stirring dead corner at the edge of the kettle body 2. In particular, for cheese raw materials with granular auxiliary materials such as fruit particles and nuts, the problem of uneven mixing caused by particle deposition can be avoided. The reciprocating drive system includes a flat shaft 35 rotatably connected to the rotating frame 5, and a third bevel gear is installed on the flat shaft 35 and the large vertical shaft 28, and the two third bevel gears are orthogonally meshed. A runner 36 is installed on the flat shaft 35, and three toothed portions 37 and toothless reset portions 38 are alternately provided on the runner 36. The transmission stroke of the three toothed portions 37 increases in the clockwise direction, and the central angles corresponding to the three toothless reset portions 38 are the same. An L-shaped gear rack 39 is slidably installed on the rotating frame 5, and the L-shaped gear rack 39 is slidably connected to the reciprocating frame 8. The three toothed portions 37 are alternately meshed with the L-shaped gear rack 39. A group of return springs 40 are installed between the L-shaped gear rack 39 and the rotating frame 5. A vertically arranged limit guide plate 47 is installed on the top surface of the reciprocating frame 8, and the limit guide plate 47 is slidably connected to the slide 6; The L-shaped gear rack 39 is provided with a vertical guide groove and a horizontal guide groove, respectively. The rotating rack 5 is fixedly mounted with a vertical guide block slidably connected to the vertical guide groove, and the reciprocating rack 8 is fixedly mounted with a horizontal guide block slidably connected to the horizontal guide groove. The reciprocating drive system drives the horizontal shaft 35 to rotate through the third bevel gear on the large vertical shaft 28. The runner 36 on the horizontal shaft 35 engages with the rack on the L-shaped rack 39 in turn as it rotates, and cooperates with the reset effect of the return spring 40 to realize the reciprocating frame 8 to move back and forth in three modes along the axis of the kettle cover 1; During the working process, when the wheel 36 rotates clockwise, the first toothed portion 37 drives the L-shaped gear rack 39 to move upward for a small stroke, the second toothed portion 37 drives the L-shaped gear rack 39 to move upward for a medium stroke, and the third toothed portion 37 drives the L-shaped gear rack 39 to move upward for a large stroke, and then enters the toothless reset portion 38, and the return spring 40 pulls the L-shaped gear rack 39 to reset quickly, forming a "low, medium, high, and fast reset" cyclic motion. This design couples the displacement parameters of the reciprocating frame 8 with the horizontal displacement parameters of the slide 6. The stirring system also has three compound motion modes of "horizontal wide range, vertical low frequency", "horizontal narrow range, vertical medium frequency", and "horizontal medium range, vertical high frequency", which can adapt to different stages of cheese raw materials including initial mixing and homogenization and refinement, improve mixing efficiency, improve the refinement of raw material particles, and significantly improve the delicate taste of the finished cheese product. A rotary disc 9 is rotatably mounted on the reciprocating frame 8 and is linked to the input shaft 7; A sleeve shaft 41 is fixedly mounted on the top axis of the rotary disc 9. An input slot with an opening at the top and slidingly connected to the input shaft 7 is fixedly opened inside the sleeve shaft 41. The cross-sections of the input slot and the input shaft 7 are both regular hexagons. The input shaft 7 slides with the sleeve shaft 41 through the input groove with a regular hexagonal cross section, achieving the dual functions of torque transmission and axial sliding; A group of stirring plates 10 are provided below the rotary disk 9. Stirring springs 11 are installed between the rotary disk 9 and adjacent stirring plates 10 and between any two stirring plates 10. Four stirring shafts 12 are rotatably mounted on each stirring plate 10. A first torsion spring 13 is provided at the rotation connection between the stirring shaft 12 and the stirring plate 10. A paddle 14 is installed on each stirring shaft 12. A first steel rope 15 is wound between any two adjacent stirring shafts 12 in the vertical direction. A second steel rope 16 is wound around the four stirring shafts 12 on the top stirring plate 10. Each second steel rope 16 is fixedly connected to the rotary disk 9. A positioning block 17 is rotatably mounted on the bottom stirring plate 10, and the positioning block 17 is slidably connected to the folding frame 3; The positioning block 17 is slidably connected along the radial guide rail of the folding frame 3 to limit the radial displacement of the stirring plate 10; A reel 18 is rotatably mounted on the rotating frame 5, and a second torsion spring 19 is provided at the rotating connection between the reel 18 and the rotating frame 5. Four stirring belts 20 are wound on the reel 18, and each stirring belt 20 is fixedly connected to the folding frame 3. A winch system for driving the folding frame 3 to rise and fall is provided on the kettle cover 1.

[0023] The axis of the stirring shaft 12 is perpendicular to the rotation axis 26 of the rotary disk 9. The stirring plate 10 is evenly distributed with flow-disturbing holes. The stirring spring 11 and the stirring belt 20 are made of stainless steel, and the blade 14 is made of titanium alloy. A group of liquid permeable holes are evenly distributed on the stirring belt 20; The rotary disc 9 is slidably connected to the input shaft 7 via a sleeve shaft 41, ensuring that the input shaft 7 can move horizontally with the carriage 6 while rotating without affecting torque transmission. The stirring plates 10 below the rotary disc 9 are connected via stirring springs 11. When the rotary disc 9 rotates, the springs are stretched by centrifugal force, causing the spacing between the stirring plates 10 to change dynamically. The four stirring shafts 12 on each stirring plate 10 are connected to adjacent stirring shafts 12 by a first steel rope 15, and a second steel rope 16 is connected to the rotary disc 9. When the rotary disc 9 accelerates, the steel ropes are tightened, driving the stirring shafts 12 to rotate around the stirring plates 10, and the angle of the blades 14 changes synchronously, forming a dual stirring effect of "active rotation plus passive deflection"; During the working process, when the rotary disc 9 rotates, the stirring shaft 12 of the top stirring plate 10 is deflected first by the traction of the second steel rope 16, and the lower stirring shaft 12 is deflected in turn by the pulling of the first steel rope 15, forming a "wave-like" angle change from top to bottom. At the same time, the spoiler holes on the stirring plate 10 cause turbulence in the raw materials during stirring, and the stirring belt 20 cuts the raw materials longitudinally. This design breaks the limitation of the "rigid fixed blade 14" of the traditional stirring device. Through elastic connection, steel rope linkage and dynamic adjustment of the angle of the blade 14, the raw materials are subjected to shear, tension and extrusion forces simultaneously during the stirring process, and the mixing uniformity is improved; The winch system includes a traction roller 42 and two guide wheels 43 rotatably connected to the lifting frame 23. A traction rope 44 is wound on the traction roller 42. The two guide wheels 43 are both transmission-connected to the traction rope 44. The axial position of the rotating shaft 26 is fixed with a wire passage with openings at both ends and adapted to the traction rope 44. A rotating pull head is provided at the bottom end of the traction rope 44, and the rotating pull head is rotatably connected to the folding frame 3.

[0024] The kettle cover 1 further includes a cleaning annular cavity 45 formed in the kettle cover 1, a liquid inlet connector 46 connected to the cleaning annular cavity 45 is installed on the kettle cover 1, and a group of cleaning nozzles connected to the cleaning annular cavity 45 are installed in the kettle cover 1; The spray angle of the cleaning nozzle is 60° downward; In the final processing stage of the cheese raw material, the folding frame 3 is sufficiently close to the kettle cover 1, and the stirring plate 10, the stirring shaft 12 and the paddle 14 are all separated from the cheese raw material. After that, the servo motor 25 continues to work, thereby quickly collecting the raw material adhering to the device. After this state is maintained for a set time, the servo motor 25 is turned off, the discharge valve is opened, and the processed raw material is discharged; After the raw materials are discharged, the stirring structure of the device can be folded or unfolded to achieve rapid cleaning; The hoisting system retracts and releases the traction rope 44 through the traction roller 42. The traction rope 44 passes through the wire passage of the rotating shaft 26 and drives the folding frame 3 to rise and fall by rotating the pull head. During the working process, when the kettle body 2 needs to be cleaned or maintained, the screw lifting module 22 first drives the lifting frame 23 to rise to separate the kettle cover 1 from the kettle body 2. Then the traction roller 42 starts to retract the rope, and the traction rope 44 pulls the folding frame 3 to slide upward along the inner wall of the kettle body 2 until the folding frame 3 is completely retracted to the bottom of the kettle cover 1. During the mixing operation, the traction roller 42 releases the rope to make the folding frame 3 descend and unfold. The positioning block 17 is slidably connected to the folding frame 3 to limit the radial displacement of the stirring plate 10. This design solves the problem of "fixed internal structure and difficult to clean" in traditional mixing devices. The folding frame 3 is designed to be lifted and lowered so that the interior of the kettle body 2 is completely exposed. There is no need to remove the stirring component during cleaning, which shortens the cleaning time. At the same time, the folding frame 3 fits the kettle body 2 after being unfolded, which reduces the retention of raw materials between the kettle wall and the stirring component, thereby improving the recovery rate of raw materials and reducing the waste of raw materials. The hoisting system is controlled by a PLC controller 24; During the stirring stage, the traction rope 44 is fully released, thereby allowing the folding frame 3 to move freely; The elastic force of the stirring spring 11 is greater than the torsion force of the second torsion spring 19, which can then limit the position of the folding frame 3; The specific method of use of the present invention is as follows: The core of the working principle and process of the present invention lies in the dynamic coordinated linkage of multiple systems. Through the precise coordination of modules such as the transmission system, variable frequency drive system, reciprocating drive system, winch system, heating jacket and PLC controller 24, the efficient and intelligent cheese raw material mixing process is achieved. The specific linkage logic is as follows: First, the PLC controller 24 acts as the hub to coordinate the screw lifting module 22 to drive the lifting frame 23 to realize the automatic separation or closing of the kettle cover 1 and the kettle body 2, and the feed valve and the discharge valve act synchronously to complete the feeding and discharge of raw materials. Then, the servo motor 25 starts the transmission system, and drives the shaft cylinder 4 and the rotating frame 5 to rotate at a differential speed through the two first transmission belts, providing basic power for subsequent dynamic stirring. At this time, the frequency conversion drive system drives the slide 6 to perform two modes of reciprocating motion along the axis of the kettle cover 1. At the same time, the input shaft 7 receives the torque of the square shaft 32 through the second bevel gear to realize alternating forward and reverse and variable speed rotation. At the same time, the reciprocating drive system drives the reciprocating frame 8 to perform three modes of reciprocating movement along the axis of the kettle cover 1. After the above actions are coupled, the turntable 9 is in the water Under the combined action of horizontal displacement, vertical lifting and multi-directional rotation, the torque transmission is maintained through the regular hexagonal sliding connection between the sleeve shaft 41 and the input shaft 7. The stirring plate 10 below it dynamically adjusts the spacing. The stirring shaft 12 is stretched by the rotating disc 9 to pull the steel rope, driving the "wave-like" change of the angle of the blade 14. In conjunction with the spoiler holes on the stirring plate 10 and the liquid-permeable holes on the stirring belt 20, a triple mixing effect of horizontal diffusion, vertical convection and multi-directional shear is formed. In addition, the hoisting system drives the folding frame 3 to rise and fall by retracting the traction rope 44 through the traction roller 42. During the mixing operation, it is expanded to limit the radial displacement of the stirring plate 10. During cleaning, it is retracted to expose the space of the kettle body 2, and the cleaning nozzle of the cleaning ring cavity 45 is cooperated to achieve rapid cleaning. The heating jacket maintains the mixing temperature through a constant temperature medium to prevent the raw materials from condensing or deteriorating. The system converts the constant speed of the servo motor 25 into a periodic speed difference between the large vertical shaft 28 and the small vertical shaft 29 through the non-ratio meshing of the sector gear ring 27 and the differential gear 30. This speed difference is then transmitted to the variable frequency drive system and the reciprocating drive system, causing the displacement parameters of the carriage 6 and the reciprocating frame 8 to change dynamically. Without this differential design, the mixing system would only operate at fixed parameters and would be unable to adapt to the needs of components with large density differences in cheese raw materials, such as milk fat and lactic acid bacteria. High-viscosity raw materials would be unevenly mixed due to insufficient shear, and low-viscosity raw materials would produce bubbles due to excessive mixing, seriously affecting the quality of the finished product. Through the overall coordination of the above multiple systems, the present invention solves two practical problems that have not been solved in the prior art: First, the traditional device has a single stirring direction and fixed trajectory, which leads to the problem of raw material stratification and uneven mixing; Secondly, the stirring component is fixed and difficult to clean, and it is not convenient to quickly recover the residual raw materials on the stirring mechanism.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A raw material mixing device for cheese preparation, comprising a kettle cover (1) and a kettle body (2), wherein a folding frame (3) is slidably mounted in the kettle body (2), characterized in that: A transmission system is provided on the kettle cover (1), and a shaft cylinder (4) and a rotating frame (5) are installed on the transmission system for transmission. A slide (6) is slidably installed on the rotating frame (5) and is provided with a reciprocating drive system and a variable frequency drive system linked with the shaft cylinder (4). The variable frequency drive system drives the slide (6) to reciprocate left and right, and the reciprocating stroke and reciprocating frequency of the slide (6) are cyclically switched in two modes. An input shaft (7) is rotatably installed on the slide (6), and the variable frequency drive system drives the input shaft (7) to alternately rotate forward and reverse and at a variable speed. A reciprocating frame (8) that can reciprocate up and down is connected to the reciprocating drive system, and the displacement frequency and displacement stroke of the reciprocating frame (8) are cyclically switched in three modes. A rotary disk (9) linked with the input shaft (7) is rotatably installed on the reciprocating frame (8). The rotary disk (9 ) is provided below a group of stirring plates (10), stirring springs (11) are installed between the rotary disk (9) and the adjacent stirring plates (10) and between each stirring plate (10), four stirring shafts (12) are rotatably installed on each stirring plate (10), a first torsion spring (13) is provided at the rotation connection between the stirring shaft (12) and the stirring plate (10), a paddle (14) is installed on each stirring shaft (12), a first steel rope (15) is wound between each two adjacent stirring shafts (12) in the vertical direction, four stirring shafts (12) on the uppermost stirring plate (10) are wound with a second steel rope (16), each second steel rope (16) is fixedly connected to the rotary disk (9), a positioning block (17) is rotatably installed on the lowermost stirring plate (10), and the positioning block (17) is slidably connected to the folding frame (3).

2. A raw material mixing device for cheese preparation according to claim 1, characterized in that: The invention also includes a base frame (21), the base frame (21) is fixedly connected to the kettle body (2), a PLC controller (24) is installed on the kettle body (2), a vertically arranged screw lifting module (22) is installed on the base frame (21), a lifting frame (23) is transmission-connected to the screw lifting module (22), the lifting frame (23) is fixedly connected to the kettle cover (1), a feed valve connected to the inner cavity of the kettle body (2) is installed on the kettle body (2), a discharge valve is connected to the bottom end of the kettle body (2), and a heating jacket is provided on the kettle body (2).

3. A raw material mixing device for cheese preparation according to claim 1, characterized in that: The transmission system comprises a servo motor (25) mounted on the kettle cover (1); a rotating shaft (26) is provided on the rotating frame (5); the rotating shaft (26) is rotatably connected to the shaft cylinder (4) via a bearing; the shaft cylinder (4) is rotatably connected to the kettle cover (1) via a bearing; the output shaft end of the servo motor (25) is connected to two first transmission toothed belts; the two first transmission toothed belts are respectively connected to the shaft cylinder (4) and the rotating shaft (26); the shaft cylinder (4) is provided with two fan gear rings (27); the two fan gear rings (27) have different heights in the vertical direction; the two fan gear rings ( 27) are arranged on the shaft cylinder (4) at an offset of 180 degrees, the center angle corresponding to the effective meshing section on one of the sector gear rings (27) is 100 degrees, and the center angle corresponding to the effective meshing section on the other sector gear ring (27) is 150 degrees. A large vertical shaft (28) and a small vertical shaft (29) are rotatably mounted on the rotating frame (5), and two differential gears (30) are mounted on the large vertical shaft (28) and the small vertical shaft (29). The two differential gears (30) are respectively adapted to mesh with the two sector gear rings (27), and the radii of the two differential gears (30) and the two sector gear rings (27) are different.

4. A raw material mixing device for cheese preparation according to claim 3, characterized in that: The variable frequency drive system includes two translation screws (31) and a square shaft (32) rotatably connected to the rotating frame (5), and a third torsion spring (33) is provided at the rotation connection between the two translation screws (31) and the rotating frame (5). A second transmission toothed belt is installed on the square shaft (32), and the two translation screws (31) are both transmission-connected to the second transmission toothed belt. The two translation screws (31) are both transmission-connected to the slide (6). The small vertical shaft (29) and the square shaft (32) are both installed with a first bevel gear, and the two first bevel gears are orthogonally meshed. A through shaft (34) is rotatably installed on the slide (6), and the through shaft (34) is fixedly provided with a through groove with two ends opened and slidably connected to the square shaft (32). The through shaft (34) and the input shaft (7) are both installed with a second bevel gear, and the two second bevel gears are orthogonally meshed.

5. The raw material mixing device for cheese preparation according to claim 1, characterized in that: The reciprocating drive system comprises a flat shaft (35) rotatably connected to the rotating frame (5), the flat shaft (35) and the large vertical shaft (28) are both provided with third bevel gears, the two third bevel gears are orthogonally meshed, a rotating wheel (36) is provided on the flat shaft (35), and the rotating wheel (36) is alternately provided with three toothed portions (37) and toothless reset portions (38), the transmission strokes of the three toothed portions (37) increase in the clockwise direction, and the three toothless reset portions (38) are alternately arranged. The central angles of the two gears are the same. An L-shaped gear rack (39) is slidably mounted on the rotating frame (5). The L-shaped gear rack (39) is slidably connected to the reciprocating frame (8). The three toothed portions (37) are alternately engaged with the L-shaped gear rack (39). A set of return springs (40) is installed between the L-shaped gear rack (39) and the rotating frame (5). A vertically arranged limit guide plate (47) is installed on the top surface of the reciprocating frame (8). The limit guide plate (47) is slidably connected to the slide (6).

6. A raw material mixing device for cheese preparation according to claim 5, characterized in that: The L-shaped gear rack (39) is provided with a vertical guide groove and a horizontal guide groove, respectively. The rotating rack (5) is fixedly provided with a vertical guide block slidably connected to the vertical guide groove. The reciprocating rack (8) is fixedly provided with a horizontal guide block slidably connected to the horizontal guide groove.

7. The raw material mixing device for cheese preparation according to claim 1, characterized in that: A sleeve shaft (41) is fixedly mounted on the axis of the top surface of the rotating disk (9). An input groove with a top opening fixedly opened inside the sleeve shaft (41) and slidably connected to the input shaft (7) is provided. The cross sections of the input groove and the input shaft (7) are both regular hexagonal.

8. The raw material mixing device for cheese preparation according to claim 6, characterized in that: A reel (18) is rotatably mounted on the rotating frame (5), and a second torsion spring (19) is provided at a rotational connection between the reel (18) and the rotating frame (5). Four stirring belts (20) are wound on the reel (18), and each stirring belt (20) is fixedly connected to the folding frame (3). A hoisting system for driving the folding frame (3) to rise and fall is provided on the kettle cover (1), and the hoisting system includes a traction roller (42) rotatably connected to the lifting frame (23) and two guide wheels (43). A traction rope (44) is wound on the traction roller (42), and the two guide wheels (43) are both transmission-connected to the traction rope (44). A rotating pull head is provided at the bottom end of the traction rope (44), and the rotating pull head is rotatably connected to the folding frame (3).

9. The raw material mixing device for cheese preparation according to claim 1, characterized in that: The axis of the stirring shaft (12) is perpendicular to the rotation axis (26) of the rotating disk (9), the stirring plate (10) is evenly distributed with flow disturbance holes, the stirring spring (11) and the stirring belt (20) are both made of stainless steel, the paddle (14) is made of titanium alloy, and the stirring belt (20) is evenly distributed with a group of liquid permeable holes.

10. The raw material mixing device for cheese preparation according to claim 1, characterized in that: The kettle cover (1) further comprises a cleaning annular cavity (45) provided in the kettle cover (1), a liquid inlet connector (46) connected to the cleaning annular cavity (45) being installed on the kettle cover (1), and a group of cleaning nozzles connected to the cleaning annular cavity (45) being installed in the kettle cover (1).

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