Integrating mixing device with two stirring shafts in cooperation

Abstract

The utility model relates to a kind of integrated mixing equipment of synergic double stirring shaft, including first tank, the stirring drive shaft of being set in first tank interior can rotate, the end of the stirring drive shaft is connected with the first stirring element of the appearance as thread, the sidewall of the first stirring element is outwardly extended and equipped with second stirring element, the first stirring element and second stirring element rotate simultaneously with the rotation of stirring drive shaft;The utility model first stirring element and second stirring element when material is stirred, the axial flow of the thread structure of first stirring blade is generated, in cooperation with the U-shaped structure of second stirring element strengthens radial mixing, constitutes composite stirring system, the fluid dynamic limit of single stirring form is broken through by the synergic action of both, effectively promote the efficiency of stirring mixing.

Description

Technical Field

[0001] This utility model relates to the field of mixing tank technology, specifically to an integrated mixing device with two mixing shafts working in synergy. Background Technology

[0002] Mixing tanks are indispensable core equipment in dairy processing, primarily used for key steps such as raw milk standardization, ingredient mixing, fermentation control, and product homogenization. These tanks are made of food-grade stainless steel with a mirror-polished inner surface, meeting stringent hygiene design standards. The mixing system is typically equipped with a variable frequency speed-regulating motor, allowing adjustment of the speed based on different products such as liquid milk, yogurt, and cheese, ensuring gentle mixing without damaging the milk protein structure. The mixing blades often employ low-shear designs such as swept-back or spiral ribbon types, enabling gentle tumbling during special processes like yogurt fermentation, avoiding damage to the gel network structure.

[0003] Application announcement number CN120094292A discloses an apparatus for producing casein through deep processing of dairy products. According to its specification and drawings, the apparatus is designed so that a motor drives a first pulley to rotate, the first pulley drives a first round rod to rotate, the first round rod drives a gear to rotate, and the gear drives a stirring rod and a second round rod to rotate together. The stirring rod drives the stirring blades to rotate and accelerates the sedimentation of skim milk.

[0004] However, the solution has certain limitations: 1. For the stirring rod of the mixing tank, the mixing efficiency is low due to the shape of the stirring rod, which affects the production efficiency; 2. How to improve the mixing efficiency of the stirring rod without increasing the cost is also one of the issues that needs to be considered. Summary of the Invention

[0005] This invention addresses the efficiency problem of the stirring rod in a mixing tank by proposing a synergistic dual-stirring shaft integrated mixing device. When the first and second stirring elements are stirring the material, the threaded structure of the first stirring blade generates axial flow, which, in conjunction with the U-shaped structure of the second stirring element, enhances radial mixing and improves the mixing efficiency.

[0006] The purpose of this invention is achieved through the following technical solution: a synergistic dual-stirring shaft integrated mixing device, including a first tank, a stirring drive shaft that can rotate inside the first tank, a first stirring element that spirals around the stirring drive shaft on the stirring drive shaft, and a second stirring element that extends outward from the side wall of the first stirring element, and the first stirring element and the second stirring element rotate simultaneously with the rotation of the stirring drive shaft.

[0007] Preferably, the side wall of the first tank is also covered by a second tank, and the partition between the first tank and the second tank is used to place the heated or cooled liquid. The side wall of the second tank is provided with a first liquid inlet and a first liquid outlet.

[0008] Preferably, the first tank is provided with a drive mechanism on the top to drive the stirring drive shaft to rotate, and the top and bottom of the first tank are respectively provided with a liquid inlet and a liquid outlet.

[0009] Preferably, the first stirring element includes a supporting vertical shaft and a supporting horizontal shaft disposed on the side wall of the supporting vertical shaft, and the end of the supporting horizontal shaft is connected to a spiral first stirring blade.

[0010] Preferably, the second stirring element is a second stirring blade with a U-shaped cross-section, and at least one support extends outward in the transverse direction and is connected to the side wall of the second stirring blade. This arrangement is to achieve an integrated design of the first stirring element and the second stirring element.

[0011] Preferably, the surface of the second stirring element is also provided with conical protrusions, the design of which shortens the mixing time of materials with different viscosities.

[0012] Preferably, the drive mechanism includes a motor support, a drive motor, and a coupling. The motor support is mounted on the surface of the first tank, and the drive motor is located above the motor support. The shaft of the drive motor passes through the top of the motor support and is connected to one end of the coupling. The top of the stirring drive shaft is connected to the other end of the coupling.

[0013] Preferably, the top of the first tank is also provided with a detachable tank cover. The first tank, the second tank and the tank cover are made of stainless steel. Stainless steel can resist long-term corrosion from lactic acid, citric acid and cleaning agents (acid / alkali) in dairy products, and prevent heavy metal ions from leaching out and contaminating the product.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When the first stirring element and the second stirring element are stirring the material, the threaded structure of the first stirring blade generates axial flow, which, together with the U-shaped structure of the second stirring element, enhances radial mixing, forming a composite stirring system. The synergistic effect of the two breaks through the fluid dynamic limitations of a single stirring form and effectively improves the efficiency of stirring and mixing.

[0016] 2. The conical protrusion design shortens the mixing time for materials of different viscosities. The synergistic effect of the conical protrusion and the spiral first stirring blade reduces power consumption and further achieves anti-sedimentation effect and improves stirring effect without increasing too much cost. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a perspective view of the first stirring element and the second stirring element of this utility model.

[0020] The diagram shows the following markings: 1. First tank; 11. Liquid inlet; 12. Liquid outlet; 2. Stirring drive shaft; 3. First stirring element; 31. Supporting vertical shaft; 32. Supporting horizontal shaft; 33. First stirring blade; 4. Second stirring element; 41. Conical protrusion; 5. Second tank; 51. Partition; 52. First liquid inlet; 53. First liquid outlet; 6. Drive mechanism; 61. Motor support base; 62. Drive motor; 63. Coupling; 7. Tank top cover. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0022] like Figure 1 and Figure 2 As shown, a dual-shaft integrated mixing device with synergistic action includes a first tank 1, a rotating stirring drive shaft 2 disposed inside the first tank 1, and a detachable tank cover 7 on the top of the second tank 5. The first tank 1, the second tank 5, and the tank cover 7 are all made of stainless steel. The top and bottom of the first tank 1 are respectively provided with a liquid inlet 11 and a liquid outlet 12.

[0023] The feed inlet 11 serves as the main feeding channel, used to introduce liquid or liquefied raw materials such as milk, starter culture, sugar, and stabilizers. The feed outlet 12 transports the uniformly mixed emulsion (such as yogurt base or formula milk) to the filling or next process equipment. The inclined outlet design of the bottom of the first tank 1 ensures that high-viscosity materials (such as cream or cheese premix) are completely discharged, reducing waste and cross-contamination.

[0024] The first tank 1, the second tank 5, and the tank lid 7 are all made of stainless steel. Stainless steel can resist the long-term corrosion of lactic acid, citric acid, and cleaning agents (acids / alkalis) in dairy products, preventing the leaching of heavy metal ions and contamination of the product. Furthermore, the stainless steel surface is mechanically polished to a mirror finish, which eliminates micro-cracks, preventing proteins and fats from adhering and remaining.

[0025] Please continue to refer to this. Figure 2The first tank 1 is also covered by a second tank 5 on its side wall. The partition 51 between the first tank 1 and the second tank 5 is used to place heated or cooled liquids. The side wall of the second tank 5 is provided with a first liquid inlet 52 and a first liquid outlet 53.

[0026] The main function of the partition 51 is to allow steam, heat transfer oil, or chilled water to pass through the first inlet 52 and then discharge it through the first outlet 53, thus creating a continuous cycle. This heat exchange method ensures uniform heating or cooling of the material inside the first tank 1, maintaining the material at the optimal stirring temperature for extended periods. The added insulation materials also prevent heat loss, significantly reducing the energy consumption of the heating system. Energy consumption also decreases after the tank is insulated.

[0027] Please refer to Figure 2 The first tank 1 is provided with a drive mechanism 6 above it to drive the stirring drive shaft 2 to rotate. The drive mechanism 6 includes a motor support 61, a drive motor 62 and a coupling 63. The motor support 61 is installed on the surface of the first tank 1. The drive motor 62 is provided above the motor support 61. The rotating shaft of the drive motor 62 passes through the top of the motor support 61 and is connected to one end of the coupling 63. The top of the stirring drive shaft 2 is connected to the other end of the coupling 63.

[0028] The rotating shaft of the drive motor 62 can drive the coupling 63 to rotate during its rotation, and the coupling 63 can simultaneously drive the stirring drive shaft 2 to rotate during its rotation. The top of the first stirring element 3 is detachably connected to the bottom of the stirring drive shaft 2. When the first stirring element 3 is worn or needs cleaning and maintenance, it is only necessary to remove the tank cover 7 first.

[0029] Please continue to refer to this. Figure 2 and Figure 3 The end of the stirring drive shaft 2 is provided with a first stirring element 3 that spirals around the stirring drive shaft 2, and a second stirring element 4 extends outward from the side wall of the first stirring element 3. The first stirring element 3 and the second stirring element 4 rotate simultaneously with the rotation of the stirring drive shaft 2.

[0030] The first stirring element 3 includes a supporting vertical shaft 31 and a supporting horizontal shaft 32 disposed on the side wall of the supporting vertical shaft 31. The end of the supporting horizontal shaft 32 is connected to a spiral-shaped first stirring blade 33. The second stirring element 4 has a second stirring blade with a U-shaped cross-section.

[0031] When the first stirring element 3 and the second stirring element 4 rotate simultaneously to stir the material inside the first tank 1, the threaded structure of the first stirring blade 33 generates axial flow, which, together with the U-shaped structure of the second stirring element 4, enhances radial mixing, forming a composite stirring system. The synergistic effect of the two breaks through the fluid dynamic limitations of the traditional single stirring form and effectively improves the efficiency of stirring and mixing.

[0032] At least one supporting horizontal shaft 32 extends outward and is connected to the side wall of the second stirring blade. The surface of the second stirring element 4 is also provided with a conical protrusion 41. The design of the conical protrusion 41 shortens the mixing time of materials with different viscosities. The structure of the conical protrusion 41 and the threaded first stirring blade 33 works together to reduce power consumption and further achieve the anti-settling effect. In addition, the eddy current generated by the second stirring element 4 effectively prevents the sedimentation of materials with high solid content.

[0033] In this embodiment, the first stirring element 3 and the second stirring element 4 are designed as an integral extension: the integral molding is achieved by casting or CNC machining, which avoids stress concentration problems caused by welding joints and improves structural strength and service life.

[0034] Working principle and usage of this utility model:

[0035] The feed inlet 11 of the first tank 1 serves as the main feeding channel for introducing liquid or liquefied raw materials such as milk, starter culture, sugar, and stabilizer. The feed outlet 12 of the first tank 1 delivers the uniformly mixed emulsion to the filling or next process equipment.

[0036] When the materials in the first tank 1 need to be mixed, the rotating shaft of the drive motor 62 can drive the coupling 63 to rotate during the rotation. During the rotation of the coupling 63, it can simultaneously drive the stirring drive shaft 2 to rotate. When the first stirring element 3 and the second stirring element 4 rotate simultaneously to stir the materials inside the first tank 1, the threaded structure of the first stirring blade 33 generates axial flow. Combined with the U-shaped structure of the second stirring element 4 to enhance radial mixing, a composite stirring system is formed. The synergistic effect of the two breaks through the fluid dynamic limitations of the traditional single stirring form and effectively improves the efficiency of stirring and mixing.

[0037] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A synergistic dual-shaft integrated mixing device, comprising a first tank (1), and a rotating stirring drive shaft (2) disposed inside the first tank (1), characterized in that, The stirring drive shaft (2) is provided with a first stirring element (3) that spirals around the stirring drive shaft (2). The side wall of the first stirring element (3) extends outward to provide a second stirring element (4). The first stirring element (3) and the second stirring element (4) rotate simultaneously with the rotation of the stirring drive shaft (2).

2. The integrated mixing device with dual stirring shafts exhibiting synergistic effect according to claim 1, characterized in that, The side wall of the first tank (1) is also covered by a second tank (5). The partition (51) between the first tank (1) and the second tank (5) is used to place heated or cooled liquids. The side wall of the second tank (5) is provided with a first liquid inlet (52) and a first liquid outlet (53).

3. The integrated mixing device with dual stirring shafts exhibiting synergistic effect according to claim 2, characterized in that, The first tank (1) is provided with a drive mechanism (6) above it to drive the stirring drive shaft (2) to rotate. The top and bottom of the first tank (1) are respectively provided with a liquid inlet (11) and a liquid outlet (12).

4. The integrated mixing device with dual stirring shafts exhibiting synergistic effect according to claim 2, characterized in that, The first stirring element (3) includes a supporting vertical shaft (31) and a supporting horizontal shaft (32) disposed on the side wall of the supporting vertical shaft (31). The end of the supporting horizontal shaft (32) is connected to a spiral first stirring blade (33).

5. The integrated mixing device with dual stirring shafts exhibiting synergistic effect according to claim 4, characterized in that, The second stirring element (4) is a second stirring blade with a U-shaped cross-section, and at least one supporting horizontal shaft (32) extends outward and is connected to the side wall of the second stirring blade.

6. The integrated mixing device with dual stirring shafts exhibiting synergistic effect according to claim 5, characterized in that, The surface of the second stirring element (4) is also provided with a conical protrusion (41).

7. The integrated mixing device with dual stirring shafts exhibiting synergistic effect according to claim 3, characterized in that, The drive mechanism (6) includes a motor support (61), a drive motor (62) and a coupling (63). The motor support (61) is mounted on the surface of the first tank (1). The drive motor (62) is located above the motor support (61). The shaft of the drive motor (62) passes through the top of the motor support (61) and is connected to one end of the coupling (63). The top of the stirring drive shaft (2) is connected to the other end of the coupling (63).

8. The integrated mixing device with dual stirring shafts exhibiting synergistic effect according to claim 2, characterized in that, The top of the first tank (1) is also provided with a detachable tank cover (7), and the first tank (1), the second tank (5) and the tank cover (7) are made of stainless steel.

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