CN216093128U - Split inclined blade stirring device for biological fermentation and fermentation tank - Google Patents
Split inclined blade stirring device for biological fermentation and fermentation tank Download PDFInfo
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- CN216093128U CN216093128U CN202122409411.4U CN202122409411U CN216093128U CN 216093128 U CN216093128 U CN 216093128U CN 202122409411 U CN202122409411 U CN 202122409411U CN 216093128 U CN216093128 U CN 216093128U
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- 238000003756 stirring Methods 0.000 title claims abstract description 182
- 238000000855 fermentation Methods 0.000 title claims abstract description 38
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Abstract
The utility model discloses a split inclined blade stirring device for biological fermentation and a fermentation tank, wherein the stirring device comprises a stirring shaft, a motor and at least one split inclined blade stirring paddle; the split inclined-blade stirring paddle comprises n blade assemblies which are separated from each other, each blade assembly comprises a blade body and a connecting shaft structure, the connecting shaft structure is suitable for detachably fixing the blade bodies on the stirring shaft, and the blade bodies are suitable for being distributed at intervals along the peripheral wall of the stirring shaft; an included angle a is formed between the profile surface of the blade body and the plane where the axis of the stirring shaft is located, wherein a is less than 90 degrees, and n is more than or equal to 2; a plurality of through holes are distributed on the contour surface of the blade body; the stirring shaft is connected to the output shaft of the motor. The utility model adopts a split type paddle component, the single paddle component can easily pass through a manhole of a fermentation tank, and then the single paddle component is installed on the stirring shaft one by one in the tank body to form a stirring device, the effective stirring volume of the single paddle component does not need to be reduced, the single paddle component is beneficial to adapting to the actual working condition, and the stirring efficiency is improved.
Description
Technical Field
The utility model belongs to the field of biological fermentation equipment, and particularly relates to a split type inclined-blade stirring device for biological fermentation and a fermentation tank.
Background
In the production of biological products, the primary factor affecting the quality of the product is the fermenter, and the stirring device is an important component of the fermenter. At present, the stirring paddles forming the stirring device are all of an integrated structure, and in order to enable the stirring paddles to be installed smoothly through a manhole of a large-scale fermentation tank, the effective stirring volume of the stirring paddles has to be reduced, so that the stirring paddles are difficult to adapt to actual working conditions.
In addition, the existing stirring paddle has the following defects: 1. has larger shearing force, and leads the loss of the biological fine particles to be larger. 2. Dead zones exist in the flow of liquid flow formed by stirring, the thermal field is not uniform, and local overheating causes deactivation. 3. Foams are easy to generate in the stirring process, and accurate monitoring of parameters such as liquid level and the like is not facilitated. 4. The stirring efficiency and the energy consumption have the problems of high efficiency and high energy consumption, and the high efficiency and the low energy consumption cannot be compatible with each other, which is a technical problem which cannot be overcome in the industry all the time.
Disclosure of Invention
The object of the present invention is to solve the drawbacks mentioned in the background art.
In order to achieve the above objects, in a first aspect, the present invention provides a split type inclined blade stirring device for biological fermentation, comprising a stirring shaft, a motor and at least one split type inclined blade stirring paddle; the split inclined-blade stirring paddle comprises n blade assemblies which are separated from each other, each blade assembly comprises a blade body and a connecting shaft structure, the connecting shaft structure is suitable for detachably fixing the blade bodies on the stirring shaft, and the blade bodies are suitable for being distributed at intervals along the peripheral wall of the stirring shaft; an included angle a is formed between the profile surface of the blade body and the plane where the axis of the stirring shaft is located, wherein a is less than 90 degrees, and n is more than or equal to 2; a plurality of through holes are distributed on the contour surface of the blade body; the stirring shaft is connected to an output shaft of the motor.
Furthermore, the number of the split inclined blade stirring paddles is at least two, and the split inclined blade stirring paddles are arranged at intervals along the axial direction of the stirring shaft.
Furthermore, the shaft connecting structure comprises a stirring shaft sleeve part, wherein the stirring shaft sleeve part is fixed on the side edge of the paddle body, n stirring shaft sleeve parts are suitable for being spliced into a complete stirring shaft sleeve, and the inner diameter of the stirring shaft sleeve is equivalent to the outer diameter of the stirring shaft and is suitable for being sleeved on the peripheral wall of the stirring shaft.
Furthermore, split type inclined blade stirring rake includes three paddle subassemblies, wherein two be equipped with the screw hole on paddle subassembly's the (mixing) shaft cover portion, this a pair of the screw hole is coaxial, passes through this a pair of screw hole and (mixing) shaft will two paddle subassembly with the (mixing) shaft is fixed as an organic whole.
Furthermore, at least one connecting key is axially arranged on the stirring shaft, a key groove is formed in one surface, which is encircled by the stirring shaft, of at least one stirring shaft sleeve part, and the connecting key is suitable for being embedded with the key groove.
Further, the connecting shaft structure further comprises a clamping hoop, and the clamping hoop is suitable for being clamped around the outer wall of the stirring shaft sleeve.
Further, the total area of the through holes on the blade body accounts for 30% -50% of the area of the blade body, and the distance between every two adjacent through holes is equal.
Furthermore, the vertical positions of the blade assemblies on the stirring shaft are the same or different, and the blade bodies are arranged in the same direction on the stirring shaft and are uniformly distributed along the circumferential direction of the stirring shaft.
Further, the paddle body has a mirror-finished surface, and the edge of the paddle body and the edge of the aperture of each through hole have a rounded corner structure.
Further, a =45 °.
In a second aspect, the utility model provides a fermentation tank, which comprises the split inclined-blade stirring device for biological fermentation according to any one of the technical schemes of the first aspect.
Compared with the prior art, the utility model has the beneficial effects that:
1. adopt split type paddle subassembly, the manhole of fermentation cylinder is passed through easily to the monolithic paddle subassembly, then forms agitating unit on the (mixing) shaft is installed piece by piece to the internal jar, and the effective stirring volume of monolithic paddle subassembly need not to reduce, is favorable to suiting with operating condition, improves stirring efficiency.
2. The device can effectively eliminate flowing dead zones, improve the uniformity of a temperature field, prevent cells from being inactivated due to local overheating, comprehensively improve the heat utilization efficiency and the cell activity of the fermentation tank, shorten the reaction time while improving the stirring efficiency, and improve the yield and the quality of finished products.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of a stirring device of the present invention;
FIG. 2 is a top view of one embodiment of a stirring device of the present invention;
FIG. 3 is a schematic structural diagram of a blade assembly in an embodiment of the stirring device of the present invention.
Reference numbers in the figures: blade subassembly 1, paddle body 11, through-hole 111, (mixing) shaft cover portion 12, keyway 121, screw hole 122, clamp 2, fastener 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described herein are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the utility model without making any creative effort, belong to the protection scope of the utility model.
As shown in fig. 1-3, one embodiment of the split inclined-blade stirring device for biological fermentation of the present invention comprises a stirring shaft (not shown in the figures), a motor (not shown in the figures) and at least one split inclined-blade stirring blade; the split inclined-blade stirring paddle comprises n blade assemblies 1 which are separated from each other, each blade assembly comprises a blade body 11 and a connecting shaft structure, the connecting shaft structure is suitable for detachably fixing the blade bodies 11 on the stirring shaft, and the blade bodies 11 are suitable for being distributed at intervals along the peripheral wall of the stirring shaft; an included angle a is formed between the profile surface of the blade body 11 and the plane where the axis of the stirring shaft is located, wherein a is less than 90 degrees, and n is more than or equal to 2; a plurality of through holes 111 are distributed on the contour surface of the blade body 11; the stirring shaft is connected to an output shaft of the motor, the motor drives the stirring shaft to rotate, and the stirring shaft drives the split inclined blade stirring paddle on the stirring shaft to rotate along with the stirring shaft, so that the biological materials in the tank are stirred. During the installation use, monolithic paddle subassembly 1 passes through the manhole of the size relatively fixed of fermentation cylinder easily, then installs piece by piece at the internal stirring shaft of jar and form agitating unit, and monolithic paddle subassembly 1's maximum width can be equal with the diameter of fermentation cylinder manhole, and paddle subassembly 1's effective stirring volume not only need not reduce, can also increase a lot than former structure, is favorable to suiting with actual stirring operating mode, improves stirring efficiency.
In this embodiment, the profile surface is a surface for pushing the mixture in the fermentation tank to flow during the stirring process, and the profile surface may be a plane or a curved surface. When curved, it is preferably a streamlined curved surface having a uniform radius of curvature. The included angle a between the contour surface and the plane of the axial line of the stirring shaft is explained as follows: when the profile surface is a plane, the included angle a is the included angle between the projection straight line formed by the projection of the plane on the projection surface perpendicular to the plane and the axis of the stirring shaft, and the included angle is an acute angle. When the profile surface is a curved surface, the included angle a is the included angle between the tangent line at the midpoint of the projection curve formed by the projection of the curved surface on the projection surface perpendicular to the curved surface and the axis of the stirring shaft, and the included angle is an acute angle. It is noted that the angle is in the direction of travel of the blade body 11 so as to create a downforce. Specifically, as shown in fig. 1, when rotating clockwise, because the blade body 11 inclines towards the advancing direction of the rotation of the stirring shaft, that is, the top end of the blade body 11 inclines towards the advancing direction relative to the bottom end, the whole profile surface of the blade body 11 inclines downwards, a certain downward pressure is formed on the mixture in the fermentation tank when rotating, that is, the stirred mixture flows clockwise along with the clockwise rotation of the blade body 11, and also continuously rolls downwards and permeates to form a vortex through the downward pressure during the flowing process, which is helpful for breaking and eliminating foam or bubbles formed during the stirring process, and makes different substances in the mixture fully contact, effectively eliminates the flowing dead zone, improves the uniformity of the temperature field, prevents local overheating from inactivating cells, comprehensively improves the heat utilization efficiency and cell activity of the fermentation tank, and shortens the reaction time while improving the stirring efficiency, the yield and the quality of the finished product are improved. The through holes 111 distributed on the profile surface of the blade body 11 can enable a part of the mixture to reversely pass through the blade body 11 in the flowing process, namely, the part of the mixture is opposite to the direction in which the blade body 11 pushes the mixture to clockwise flow, and the reverse liquid flow and the forward liquid flow collide to form turbulent flow so as to enable different substances to diffuse mutually, thereby undoubtedly increasing the meeting probability of the different substances in the mixture and further improving the stirring effect. The size and number n of the blade bodies 11 can be determined according to actual needs, and particularly can be 2, 3 or more pieces according to the size of the fermentation tank. The size of the included angle a can be determined according to actual needs, and the included angles a of the blade bodies 11 can be the same or different. Different included angles a can form more irregular turbulence relative to the same included angle a, which can improve the stirring effect to a certain extent, but can also increase the stirring resistance. The arrangement mode, the aperture size and the number of the through holes 111 can be determined according to actual needs, and particularly need to be adapted to the size of a fermentation tank. The number or area of the through holes 111 determines the size of the reverse flow, and preferably, the total area of the through holes 111 on one blade body 11 accounts for 30% -50% of the area of the blade body 11, and the through holes 111 are equally spaced. The flow rate of the reverse liquid flow formed in the way is equivalent to that of the forward liquid flow, and the turbulence formed after collision can enable the foreign matters in the reverse liquid flow to be in contact reaction more uniformly, so that the stirring effect is improved. Of course, the rotation direction of the blade body 11 can be controlled by the positive and negative rotation of the motor, the change of the direction can be adjusted at any time according to actual needs, and the adjustment interval can also be preset.
In one embodiment, the number of the split inclined-blade stirring paddles is at least two, and each split inclined-blade stirring paddle is arranged at intervals along the axial direction of the stirring shaft. When the tank body reaches a certain height, the liquid level of the biological materials in the tank body can rise, and in order to fully stir the materials in the tank, a split type inclined blade stirring paddle needs to be added on the tank body along the axial direction of the stirring shaft, for example, the number of the stirring paddles is increased from one to two or three. In a word, the higher the liquid level in the tank is, the more the number of the split inclined-blade stirring paddles can be. When the motor drive (mixing) shaft is rotatory, the (mixing) shaft can drive a plurality of split type inclined blade stirring rakes rotatory thereupon simultaneously to can stir the full coverage to the material of full height, improve stirring effect.
In one embodiment, the shaft coupling structure includes a stirring shaft sleeve portion 12, the stirring shaft sleeve portion 12 is fixed on a side of the blade body 11, and n stirring shaft sleeve portions 12 are suitable for being spliced to form a complete stirring shaft sleeve, and an inner diameter of the stirring shaft sleeve corresponds to an outer diameter of the stirring shaft and is suitable for being sleeved on a peripheral wall of the stirring shaft. Stirring axle sleeve portion 12 is convenient for install paddle body 11 detachably on the (mixing) shaft, and a plurality of stirring axle sleeve portions 12 just in time enclose synthetic round and embrace on the outer wall of (mixing) shaft, and accessible screw fixes every stirring axle sleeve portion 12 on the (mixing) shaft, makes a plurality of split type paddle body 11's installation nimble more high-efficient.
In one embodiment, n =3, a =45 °, wherein the two pieces of the paddle assemblies 1 are provided with screw holes 122 on the stirring shaft sleeve portions 12, the pair of the screw holes 122 are coaxial, the pair of coaxial screw holes 122 are also coaxial with the mounting hole on the stirring shaft, and a pair of the stirring shaft sleeve portions 12 and the stirring shaft are fixed into a whole by screws penetrating through the pair of the screw holes 122 and the mounting hole on the stirring shaft, so that the two pieces of the paddle assemblies 1 are detachably fixed on the stirring shaft. The installation mode is easy to realize in the narrow space of the tank body, and the installation efficiency is improved. As shown in fig. 1 and fig. 2, 3 blade bodies 11 are uniformly distributed on the stirring shaft at intervals of 120 °, and the included angle a of each blade body 11 is 45 °. Stirring rake based on 3 blade bodies 11 is adaptable most operating modes, is more than 3 and must increases the energy consumption, is less than 3 and is unfavorable for the formation of stable liquid stream to influence stirring efficiency, this kind of configuration can compromise high efficiency and energy-conservation promptly. Through fluid simulation calculation, the comprehensive mixing effect of the stirring thrust and the downward pressure on the dissimilar substances can be improved to the maximum extent by the inclination angle of 45 degrees.
In one embodiment, at least one connecting key is axially arranged on the stirring shaft, a key groove 121 is arranged on one surface of at least one stirring shaft sleeve part 12, which surrounds the stirring shaft, and the connecting key is suitable for being embedded in the key groove 121. The concave key groove 121 is matched with the convex key on the stirring shaft, so that the stability of installation between the sleeve part 12 of the stirring shaft and the stirring shaft can be improved, relative displacement between the sleeve part and the stirring shaft can not occur, and the reliability and the stability of the stirring device are improved.
On the basis of the above embodiment, the shaft connecting structure further comprises a hoop 2, and the hoop 2 is suitable for being hooped on the outer wall of the stirring shaft sleeve. Above-mentioned a pair of (mixing) shaft cover portion 12 is fixed on the (mixing) shaft after, encloses the hoop by three (mixing) shaft cover portion 12 with clamp 2 again and encloses the outer wall of synthetic stirring axle sleeve, then through fastener 3 clamp 2 fastening of constituteing two semicircles together, form the clamping force that is enough to hold tightly with the (mixing) shaft to the stirring axle sleeve, guarantee that it can not become flexible on the (mixing) shaft, axial displacement can not take place yet, improvement reliability and stability.
In one embodiment, the vertical positions of the blade assemblies 1 on the stirring shaft are the same or different, and the blade bodies 11 are arranged in the same direction on the stirring shaft and are uniformly distributed along the circumferential direction of the stirring shaft. When the vertical positions are the same, stable swirling liquid flow can be formed, and the stirring resistance is small. Irregular turbulence can be formed by different vertical positions, the stirring effect can be improved to a certain degree, but the stirring resistance is large. The arrangement direction is the same, that is, the inclination direction of each blade body 11 is the same. The plurality of blade bodies 11 with the same inclination direction can form liquid flow with stable flow velocity, reduce stirring resistance and save energy. The same effect is achieved with the same inclination angle. The blades 11 are uniformly distributed along the circumferential direction of the stirring shaft at equal intervals, so that stable liquid flow is formed, stirring resistance is reduced, and energy is saved.
In one embodiment, the paddle body 11 has a mirror-finished surface, and the edge of the paddle body 11 and the edge of the aperture of each through hole 111 have a rounded corner structure. The smooth surface can reduce the shearing force of the blade body 11 to living cells in the mixture, reduce the physical damage to biological fine particles such as cells and the like in the stirring process and is beneficial to maintaining the biological activity of the mixture after stirring. The rounded corners further reduce shear forces on the living cells in the mixture from the paddle body 11.
An embodiment of the fermentation tank of the present invention, including the split type inclined blade stirring device for biological fermentation as described in any one of the embodiments of the split type inclined blade stirring device for biological fermentation, also has its advantages, and will not be described herein again.
The control software involved in the embodiments of the present application adopts the prior art.
Although a plurality of embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that a variety of changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (11)
1. A split inclined blade stirring device for biological fermentation is characterized by comprising a stirring shaft, a motor and at least one split inclined blade stirring paddle; the split inclined-blade stirring paddle comprises n blade assemblies (1) which are separated from each other, each blade assembly comprises a blade body (11) and a connecting shaft structure, the connecting shaft structure is suitable for detachably fixing the blade bodies (11) on the stirring shaft, and the blade bodies (11) are suitable for being distributed at intervals along the peripheral wall of the stirring shaft; an included angle a is formed between the profile surface of the blade body (11) and the plane where the axis of the stirring shaft is located, wherein a is less than 90 degrees, and n is more than or equal to 2; a plurality of through holes (111) are distributed on the contour surface of the blade body (11); the stirring shaft is connected to an output shaft of the motor.
2. The split inclined-blade stirring device for biological fermentation according to claim 1, wherein the number of the split inclined-blade stirring blades is at least two, and each split inclined-blade stirring blade is arranged at intervals along the axial direction of the stirring shaft.
3. The split inclined-blade stirring device for biological fermentation according to claim 1, wherein the coupling structure comprises a stirring shaft sleeve portion (12), the stirring shaft sleeve portion (12) is fixed on the side of the blade body (11), n stirring shaft sleeve portions (12) are suitable for being spliced into a complete stirring shaft sleeve, and the inner diameter of the stirring shaft sleeve is equivalent to the outer diameter of the stirring shaft and is suitable for being sleeved on the peripheral wall of the stirring shaft.
4. The split type inclined blade stirring device for biological fermentation according to claim 3, wherein the split type inclined blade stirring paddle comprises three blade assemblies (1), wherein the stirring shaft sleeve portion (12) of two blade assemblies (1) is provided with a screw hole (122), the pair of screw holes (122) are coaxial, and the two blade assemblies (1) and the stirring shaft are fixed into a whole by passing a screw through the pair of screw holes (122) and the stirring shaft.
5. The split inclined-blade stirring device for biological fermentation according to claim 3 or 4, wherein the stirring shaft is axially provided with at least one connecting key, one surface of at least one stirring shaft sleeve part (12) which surrounds the stirring shaft is provided with a key groove (121), and the connecting key is suitable for being embedded with the key groove (121).
6. The split inclined-blade stirring device for biological fermentation of claim 3, wherein the shaft connecting structure further comprises a hoop (2), and the hoop (2) is suitable for being hooped on the outer wall of the stirring shaft sleeve.
7. The split inclined-blade stirring device for biological fermentation according to claim 1, wherein the total area of the plurality of through holes (111) on the blade body (11) accounts for 30-50% of the area of the blade body (11), and the distance between every two adjacent through holes (111) is equal.
8. The split inclined-blade stirring device for biological fermentation according to claim 1, wherein the vertical positions of the blade assemblies (1) on the stirring shaft are the same or different, and the blade bodies (11) are arranged in the same direction on the stirring shaft and are uniformly distributed along the circumferential direction of the stirring shaft.
9. The split type inclined blade stirring device for biological fermentation as claimed in claim 1, wherein the blade body (11) has a mirror-polished surface, and the edge of the blade body (11) and the edge of the orifice of each through hole (111) have a rounded structure.
10. The split inclined-blade stirring device for biological fermentation according to claim 1, wherein a =45 ℃.
11. A fermenter comprising the split type pitched blade stirring apparatus for bio-fermentation of any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122409411.4U CN216093128U (en) | 2021-09-30 | 2021-09-30 | Split inclined blade stirring device for biological fermentation and fermentation tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122409411.4U CN216093128U (en) | 2021-09-30 | 2021-09-30 | Split inclined blade stirring device for biological fermentation and fermentation tank |
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| CN216093128U true CN216093128U (en) | 2022-03-22 |
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| CN202122409411.4U Active CN216093128U (en) | 2021-09-30 | 2021-09-30 | Split inclined blade stirring device for biological fermentation and fermentation tank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117305068A (en) * | 2023-09-27 | 2023-12-29 | 南京工业大学 | Composite microporous stirring paddle for high-viscosity system fermentation of biopolymer and application thereof |
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2021
- 2021-09-30 CN CN202122409411.4U patent/CN216093128U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117305068A (en) * | 2023-09-27 | 2023-12-29 | 南京工业大学 | Composite microporous stirring paddle for high-viscosity system fermentation of biopolymer and application thereof |
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Effective date of registration: 20231218 Address after: No. 2 Nanya Road, Minhang District, Shanghai, 201321 Patentee after: KANGMA-HEATHCODE (SHANGHAI) BIOTECH Co.,Ltd. Patentee after: Yanshimei Society (Hainan) Medical Beauty Health Technology Co.,Ltd. Address before: Building 12, Lane 118, Furonghua Road, Pudong New Area, Shanghai, 201321 Patentee before: KANGMA-HEATHCODE (SHANGHAI) BIOTECH Co.,Ltd. |