A stirring device for preparing vaccine solutions

Abstract

This utility model discloses a stirring device for preparing vaccine solutions, including a stirring shaft, a dispersion disk, a drive assembly, and a drive shaft. The drive assembly is connected to the dispersion disk via the drive shaft and the stirring shaft. The dispersion disk includes a disk body and several shear blades. The disk body is circular, and the shear blades are evenly distributed along the outer edge of the disk body. Each shear blade includes a connecting edge, an outer edge, and a shearing edge. The connecting edge is connected to the edge of the disk body, one end of the shearing edge is connected to one end of the connecting edge, and the other end of the shearing edge extends away from the disk body. The two ends of the outer edge are connected to the other ends of the connecting edge and the other end of the shearing edge, respectively. The vertical projection of the shear blade is triangular. The geometric structure of the shear blades enhances the shear stress of the dispersion disk, reducing dependence on high rotational speed. The axial vortex generated by rotation, in conjunction with the radial extension of the shear blade structure, improves the hydration of the suspending agent, prevents suspension agglomeration, and helps the suspending agent to fully dissolve in the solution.

Description

Technical Field

[0001] This utility model relates to the field of stirring components, and in particular to a stirring device for preparing vaccine solutions. Background Technology

[0002] Coccidiosis in chickens is a highly serious global parasitic disease that causes huge economic losses to the poultry industry every year. Currently, prevention and control mainly rely on adding anticoccidial drugs to feed or drinking water, or through coccidiosis vaccination. Vaccination is widely used due to its effectiveness and sustainability, and common immunization methods include drinking water, spraying / spraying, mixing with feed, and oral administration.

[0003] In these methods, because coccidia oocysts are denser than water and prone to sedimentation, coccidia vaccines often need to be used in conjunction with suspending agents to prepare a uniformly dispersed and stable suspension for chickens to consume. When a large volume of suspending solution is required, a small amount of high-concentration suspending solution can be prepared first, and then diluted with water.

[0004] However, because suspending agents hydrate quickly, when added to a solution (water), the outer powder layer rapidly hydrates and its viscosity increases dramatically, forming a gel-like outer shell. This shell hinders further contact between water and the unhydrated powder inside, thus delaying or even preventing further hydration, resulting in a clumped structure with an outer gel shell and an inner layer of dry powder, commonly known as "fish eyes." This phenomenon is particularly pronounced when preparing high-viscosity suspensions, where the amount of water is small and the amount of suspending agent is large, leading to a slow dispersion rate and making "fish eyes" more likely to occur.

[0005] To eliminate "fisheye" structures, theoretically, agitation and shearing should be enhanced. However, existing agitation components (such as paddle and turbine agitators) are typically designed based on large-scale fluid circulation principles, resulting in limited shear force that is insufficient to effectively break up existing "fisheye" structures. At low speeds, these agitators provide insufficient shear force to instantly disperse the gel shell; while increasing the speed may enhance the shearing effect to some extent, it introduces more eddies and air, leading to severe liquid bubbles, significantly increasing energy consumption, and potentially adversely affecting the physical integrity of certain sensitive active ingredients (such as vaccine oocysts). Utility Model Content

[0006] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a stirring device for preparing vaccine solutions, which solves the problem of weak shear force in existing stirring devices.

[0007] To achieve this objective, the present invention adopts the following technical solution: A stirring device for preparing vaccine solutions includes a stirring shaft, a dispersing disk, a driving assembly, and a driving shaft. One end of the driving shaft is mounted on the driving end of the driving assembly, the other end of the driving shaft is connected to the top end of the stirring shaft, and the dispersing disk is mounted on the bottom end of the stirring shaft. The dispersion disk includes a disk body and a plurality of shearing blades. The disk body is circular, and the plurality of shearing blades are evenly distributed on the outer edge of the disk body. The shearing blade includes a connecting edge, an outer edge, and a shearing edge. The connecting edge is connected to the edge of the disk body. One end of the shearing edge is connected to one end of the connecting edge. The other end of the shearing edge extends away from the disk body. The two ends of the outer edge are connected to the other ends of the connecting edge and the other ends of the shearing edge, respectively. The projection of the shearing blade in the vertical direction is triangular.

[0008] Preferably, the dispersing disk further includes a plurality of upper shearing teeth and a plurality of lower shearing teeth, the upper shearing teeth and the lower shearing teeth being respectively disposed on the shearing blade; The shearing blade and the disk body are on the same horizontal plane, the upper shearing tooth extends upward relative to the shearing blade, and the lower shearing tooth extends downward relative to the shearing blade.

[0009] Preferably, the upper shearing teeth and the lower shearing teeth are arranged at equal intervals on the outer edge.

[0010] Preferably, the upper shear tooth and the lower shear tooth are blades with a parallelogram cross section or a triangular cross section.

[0011] Preferably, the disk body has a plurality of through holes.

[0012] Preferably, the through hole is a circular hole, and a plurality of the through holes are distributed around the center of the disk.

[0013] Preferably, the center of the disc body is provided with an insertion hole; The bottom end of the stirring shaft is provided with an insert post, the diameter of which is smaller than the diameter of the stirring shaft, and the diameter of the insert hole is smaller than the diameter of the stirring shaft. The outer wall of the insert post is provided with external threads, and the insert post passes through the insert hole and is threadedly connected to the nut.

[0014] Preferably, the bottom end of the drive shaft is provided with a first mounting block, and the top end of the stirring shaft is provided with a second mounting block. The first mounting block and the second mounting block are assembled to form an assembly part, and the assembly part is coaxially arranged with the stirring shaft. The outer casing of the assembly section is equipped with a fastening ring.

[0015] Preferably, a limiting part is provided on the lower part of the outer side of the first mounting block, the limiting part extends outward, and the limiting part restricts the fastening ring from moving downward.

[0016] Preferably, the opening area of ​​the through hole accounts for 40% to 70% of the area of ​​the disk body.

[0017] Compared with the prior art, one of the above technical solutions has the following beneficial effects: The shear stress of the dispersion disk is enhanced by the geometry of the shear blades, reducing the dependence on high rotational speed. The axial vortex generated by rotation works in synergy with the radial extension of the shear blade structure to improve the hydration of the suspending agent, prevent the suspending agent from clumping, and help the suspending agent to dissolve fully in the solution. Attached Figure Description

[0018] Figure 1 This is an assembly diagram of the stirring shaft and dispersing disc of this utility model; Figure 2 This is a schematic diagram of the stirring shaft and dispersing disc of this utility model from another angle; Figure 3 This is a vertical projection view of the dispersion disk of this utility model (ignoring the upper and lower shear teeth). Figure 4 This is a schematic diagram of the structure of the stirring shaft of this utility model; Figure 5 This is a structural schematic diagram of one embodiment of the present invention.

[0019] The components include: a stirring shaft 1, an insert column 11, a second clamping block 12, a dispersing disc 2, a disc body 21, a through hole 211, an insert hole 212, a shearing blade 22, a connecting edge 221, an outer edge 222, a shearing edge 223, an upper shearing tooth 23, a lower shearing tooth 24, a drive shaft 3, a first clamping block 31, a limiting part 32, and a fastening ring 4. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," and "third" may explicitly or implicitly include one or more of that feature.

[0023] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The following is in conjunction with the appendix Figures 1 to 5 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0025] A stirring device for preparing vaccine solutions includes a stirring shaft 1, a dispersing disk 2, a driving assembly, and a driving shaft 3. One end of the driving shaft 3 is mounted on the driving end of the driving assembly, and the other end of the driving shaft 3 is connected to the top end of the stirring shaft 1. The dispersing disk 2 is mounted on the bottom end of the stirring shaft 1. The dispersing disk 2 includes a disk body 21 and a plurality of shearing blades 22. The disk body 21 is circular, and the plurality of shearing blades 22 are evenly distributed on the outer edge of the disk body 21. The shearing blade 22 includes a connecting edge 221, an outer edge 222, and a shearing edge 223. The connecting edge 221 is connected to the edge of the disk body 21. One end of the shearing edge 223 is connected to one end of the connecting edge 221, and the other end of the shearing edge 223 extends away from the disk body 21. The two ends of the outer edge 222 are connected to the other ends of the connecting edge 221 and the other ends of the shearing edge 223, respectively. The projection of the shearing blade 22 in the vertical direction is triangular.

[0026] The drive assembly drives the stirring shaft 1 to rotate via the drive shaft 3, and the dispersion disk 2 rotates with the stirring shaft 1. When the disk body 21 rotates, it drives the shear blades 22 to cut the fluid. The thickness of the shear blades 22, which have a triangular projection structure, varies radially. The connecting edge 221 fixes the shear blades 22 to the edge of the disk body 21; the shearing edge 223 extends outward to increase the cutting path; the outer edge 222 closes the outer end of the shear blades 22, forming a continuous cutting edge when the dispersion disk 2 rotates. The extension direction of several consecutively arranged shear blades 22 matches the rotation direction, and the shearing edge 223 of one shear blade forms a shearing angle with the outer edge 222 of the adjacent shear blade. At low speeds, this shearing angle enhances the shear stress.

[0027] Compared to traditional paddle or turbine agitators that rely on high rotational speeds to generate shear force, this invention, through the combination of a circular disc 21 and triangular shear blades 22, enables the dispersion disc to achieve a high-intensity shearing effect under the rotational drive of the drive assembly. The shear angle structure formed by adjacent shear blades 22 overcomes the limitations of traditional agitators that rely on fluid circulation, which is beneficial for promoting the exposure of internal powders and preventing the gel shell from hindering the hydration process of the drug solution.

[0028] Furthermore, the dispersing disk 2 also includes a plurality of upper shearing teeth 23 and a plurality of lower shearing teeth 24, the upper shearing teeth 23 and the lower shearing teeth 24 being respectively disposed on the shearing blade 22; The shearing blade 22 is on the same horizontal plane as the disk body 21, the upper shearing tooth 23 extends upward relative to the shearing blade 22, and the lower shearing tooth 24 extends downward relative to the shearing blade 22.

[0029] The upper shear teeth 23 and lower shear teeth 24 are tooth-like structures extending upward and downward on the shear blades 22, respectively; their extension directions form a perpendicular angle with the rotation plane of the dispersion disk 2. When the dispersion disk 2 rotates with the stirring shaft 1, the shear blades 22 generate radial shear flow in the horizontal plane where the disk body 21 is located, while the upper shear teeth 23 and lower shear teeth 24 form bidirectional shearing action in the vertical direction. The upper shear teeth 23 apply shear "tearing" to the gel clumps in the solution layer located in the upper part of the disk body 21; the lower shear teeth 24 disturb the dispersed powder in the solution layer located in the lower part of the disk body 21, and simultaneously apply shear to the already agglomerated gel clumps. The bidirectional shear teeth and the radially outward-extending shear blades 22 form a three-dimensional shear field during rotation, causing the gel shell to bear shear blade stress in both the horizontal and vertical directions, thereby achieving agglomeration. Due to the increased spatial distribution density of the upper and lower shear teeth, the shear strength can be enhanced without increasing the rotation speed.

[0030] Furthermore, the upper shearing teeth 23 and the lower shearing teeth 24 are arranged at equal intervals on the outer edge 222.

[0031] Along the length of the outer edge 222 of the shear blade, upper shear teeth 23 and lower shear teeth 24 are alternately arranged at equal intervals, forming an alternating tooth row structure on the outer edge 222. When the dispersion disk 2 rotates, the upper shear teeth 23 and lower shear teeth 24 generate vertical shear forces in opposite directions on the liquid, forming a bidirectional shear flow field. The equidistant arrangement ensures that the shear action area of ​​each shear tooth is uniformly distributed around the outer edge 222, avoiding overlap or gaps between the shear action areas of adjacent teeth, and ensuring continuous coverage of the shear force in the spatial dimension.

[0032] Furthermore, the upper shear tooth 23 and the lower shear tooth 24 are blades with a parallelogram cross section or a triangular cross section.

[0033] A parallelogram-shaped shear tooth blade refers to a blade whose cross-section features two sets of parallel and equal-length quadrilateral sides. During rotation, the bidirectional shear force generated by the symmetrical edges of the parallelogram-shaped shear tooth blade can exert a balanced cutting effect on the gel shell, avoiding local stress concentration that could lead to blade deformation.

[0034] Triangular cross-section shear blades refer to blades with a pointed structure where three sides are closed and connected in cross-section. This pointed structure enhances the stirring and penetration capabilities. By contacting the gel shell through the pointed structure, higher pressure is generated at the same rotation speed, thereby penetrating the gel layer and breaking down internal clumps.

[0035] Both types of shear teeth achieve effective shearing at low speeds through optimized geometry.

[0036] Furthermore, the disk body 21 is provided with a plurality of through holes 211.

[0037] When the disc 21 rotates with the stirring shaft 1, the through-holes 211 guide the fluid to form vertical flow channels. When the hydrated, high-viscosity fluid passes through the through-holes 211, a shear flow field is generated at the edge of the holes, exerting a tearing effect on the gel shell. At the same time, the local negative pressure formed in the area of ​​the through-holes 211 draws the unhydrated powder from the bottom up into the fluid, achieving forced exchange of substances inside and outside the agglomerates. Under normal rotational speed conditions, the through-hole structure enhances the ability to penetrate and destroy the agglomerate structure by changing the flow field distribution.

[0038] Furthermore, the through hole 211 is a circular hole, and several through holes 211 are distributed around the center of the disk body 21.

[0039] The circular hole structure eliminates the turbulent boundary layer separation phenomenon that may be caused by the angular region, so that the fluid remains in a laminar state when passing through the through hole 211.

[0040] The circular through-holes 211 arranged around the perimeter form multiple equidistant axial flow channels, promoting a symmetrical circulation path of the drug solution in the upper and lower regions of the disk 21. This symmetrical flow pattern effectively balances the centrifugal force field generated by the rotation of the disk 21, avoiding local shear force differences caused by the displacement of the through-holes 211, ensuring both rotational stability and uniform force distribution on the gel clumps throughout the entire dispersion disk 2.

[0041] Furthermore, the center of the disk body 21 is provided with an insertion hole 212; The bottom end of the stirring shaft 1 is provided with an insertion post 11, the diameter of the insertion post 11 is smaller than the diameter of the stirring shaft 1, and the diameter of the insertion hole 212 is smaller than the diameter of the stirring shaft 1. The outer wall of the insert post 11 is provided with external threads, and the insert post 11 passes through the insert hole 212 and is threadedly connected to the nut.

[0042] The difference in diameter between the insertion hole 212 and the insertion post 11 forms an axial limiting structure. When the insertion post 11 is inserted into the insertion hole 212, the bottom end face of the stirring shaft 1 contacts the disc body 21, forming an axial constraint and preventing the dispersion disc 2 from moving axially during high-speed rotation. The external thread on the outer wall of the insertion post 11 and the threaded engagement of the nut generate a radial clamping force, forming a fixed connection between the dispersion disc 2 and the stirring shaft 1, preventing relative rotation between the dispersion disc 2 and the stirring shaft 1 due to shear resistance during the stirring process. Specifically, during installation, after the insertion post 11 passes through the insertion hole 212, it is tightened with the nut. The axial pressure generated by the threaded connection makes the end faces of the dispersion disc 2 and the stirring shaft 1 fit tightly together, forming a double mechanical constraint.

[0043] On the other hand, the detachable connection between the dispersion disc 2 and the stirring shaft 1 allows for the replacement of dispersion disc 2 of different sizes according to usage needs, making the stirring device more adaptable.

[0044] Furthermore, the bottom end of the drive shaft 3 is provided with a first mounting block 31, and the top end of the stirring shaft 1 is provided with a second mounting block 12. The first mounting block 31 and the second mounting block 12 are assembled to form an assembly part, which is coaxially arranged with the stirring shaft 1. The outer casing of the assembly section is equipped with a fastening ring 4.

[0045] The first clamping block 31 refers to the structure located at the bottom end of the drive shaft 3, and the second clamping block 12 is the structure located at the top end of the stirring shaft 1. Specifically, the first clamping block 31 and the second clamping block 12 can be machined into mortise and tenon joint structures. This joint structure is used to eliminate the assembly gap between the drive shaft 3 and the stirring shaft 1, assembling them into an assembly part. The fastening ring 4 is sleeved on the outer periphery of the assembly part, and can be locked using a split clamp structure to apply radial pressure to the assembly part, thereby enhancing the connection rigidity of the assembly part.

[0046] Furthermore, a limiting part 32 is provided on the lower part of the outer side of the first mounting block 31. The limiting part 32 extends outward and restricts the fastening ring 4 from moving downward.

[0047] After the drive shaft 3 and the stirring shaft 1 are assembled via the first clamping block 31 and the second clamping block 12, the fastening ring 4 is fitted onto the outside of the assembled part. The limiting part 32 is located at the lower part of the outside of the first clamping block 31, and its outer diameter is larger than the inner diameter of the fastening ring 4, forming a physical blocking surface. During rotation, when the fastening ring 4 is subjected to a downward force, the limiting part 32 provides reverse support through the contact surface, preventing the fastening ring 4 from sliding axially.

[0048] Furthermore, the opening area of ​​the through hole 211 accounts for 40% to 70% of the area of ​​the disk body 21.

[0049] The total open area of ​​the through holes 211 accounts for 40% to 70% of the disk surface area of ​​the disk body 21, ensuring that the disk body 21 retains sufficient solid portion to drive fluid rotation and stirring, while providing sufficient through hole area. When the suspending agent passes through the through holes 211 under the action of the pressure difference on the disk surface of the high-speed rotating disk body 21, it generates a high local flow velocity and a sharp velocity gradient, thereby forming a strong shear force that effectively breaks up "fish eyes" and powder agglomerates.

[0050] To further explain, if the opening ratio of the through hole 211 is too low (less than 30%), most of the fluid will flow through the outer edge of the disc 21, and the shearing effect through 211 will not be significant; if the opening ratio of the through hole 211 is too high (greater than 70%), the structure of the disc 21 will be close to a "sieve", the ability to push the fluid will decrease, the pressure difference will be insufficient, and the shearing effect when passing through the through hole 211 will be weakened.

[0051] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A stirring device for preparing vaccine solutions, characterized in that: It includes a stirring shaft (1), a dispersing disc (2), a driving assembly and a driving shaft (3). One end of the driving shaft (3) is installed at the driving end of the driving assembly, and the other end of the driving shaft (3) is connected to the top end of the stirring shaft (1). The dispersing disc (2) is installed at the bottom end of the stirring shaft (1). The dispersion disk (2) includes a disk body (21) and a plurality of shearing blades (22). The disk body (21) is circular, and the plurality of shearing blades (22) are evenly distributed on the outer edge of the disk body (21). The shear blade (22) includes a connecting edge (221), an outer edge (222), and a shearing edge (223). The connecting edge (221) is connected to the edge of the disk body (21). One end of the shearing edge (223) is connected to one end of the connecting edge (221). The other end of the shearing edge (223) extends away from the disk body (21). The two ends of the outer edge (222) are connected to the other ends of the connecting edge (221) and the other ends of the shearing edge (223), respectively. The projection of the shearing blade (22) in the vertical direction is triangular.

2. The stirring device for preparing vaccine solutions according to claim 1, characterized in that: The dispersion disk (2) further includes a plurality of upper shearing teeth (23) and a plurality of lower shearing teeth (24), the upper shearing teeth (23) and the lower shearing teeth (24) being respectively disposed on the shearing blade (22). The shear blade (22) and the disk body (21) are on the same horizontal plane. The upper shear tooth (23) extends upward relative to the shear blade (22), and the lower shear tooth (24) extends downward relative to the shear blade (22).

3. The stirring device for preparing vaccine solutions according to claim 2, characterized in that: The upper shearing teeth (23) and the lower shearing teeth (24) are arranged at equal intervals on the outer edge (222).

4. The stirring device for preparing vaccine solutions according to claim 3, characterized in that: The upper shearing tooth (23) and the lower shearing tooth (24) are blades with parallelogram or triangular cross sections.

5. A stirring device for preparing vaccine solutions according to claim 4, characterized in that: The disk body (21) is provided with a number of through holes (211).

6. A stirring device for preparing vaccine solutions according to claim 5, characterized in that: The through hole (211) is a circular hole, and several of the through holes (211) are distributed around the center of the disk body (21).

7. A stirring device for preparing vaccine solutions according to claim 6, characterized in that: The center of the disc body (21) is provided with an insertion hole (212); The bottom end of the stirring shaft (1) is provided with a plug (11), the diameter of the plug (11) is smaller than the diameter of the stirring shaft (1), and the diameter of the plug hole (212) is smaller than the diameter of the stirring shaft (1). The outer wall of the insert post (11) is provided with external threads, and the insert post (11) passes through the insert hole (212) and is threadedly connected to the nut.

8. A stirring device for preparing vaccine solutions according to claim 7, characterized in that: The bottom end of the drive shaft (3) is provided with a first clamping block (31), and the top end of the stirring shaft (1) is provided with a second clamping block (12). The first clamping block (31) and the second clamping block (12) are assembled to form an assembly part, which is coaxially arranged with the stirring shaft (1). The outer casing of the assembly section is equipped with a fastening ring (4).

9. A stirring device for preparing vaccine solutions according to claim 8, characterized in that: The lower part of the outer side of the first mounting block (31) is provided with a limiting part (32), which extends outward and restricts the fastening ring (4) from moving downward.

10. A stirring device for preparing vaccine solutions according to claim 9, characterized in that: The opening area of ​​the through hole (211) accounts for 40% to 70% of the area of ​​the disk body (21).

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