Stirring paddle of fermentation tank

Abstract

The invention provides a stirring paddle of a fermentation tank, and particularly relates to the technical field of stirring equipment. The stirring paddle is arranged on the stirring shaft in a sleeving manner, an air inlet hole is formed in the stirring shaft, the air inlet hole is formed in the axial direction of the stirring shaft, and the stirring paddle comprises a connecting sleeve, a connecting plate and a plurality of paddles; the connecting sleeve is fixedly connected with the stirring shaft, a plurality of through holes are uniformly distributed in the circumferential direction of the connecting sleeve, and the through holes are communicated with an air inlet hole of the stirring shaft; the connecting sleeve is sleeved with the connecting plate, and a plurality of channels correspondingly communicating with the through holes are formed in the connecting plate; the multiple blades are fixedly connected with the connecting plate and evenly distributed in the circumferential direction of the connecting plate, containing cavities are formed in the multiple blades and communicate with the ends, away from the through holes, of the corresponding channels, and multiple air outlet holes are formed in the side walls of the containing cavities. The stirring paddle can increase the interface area and exchange time of oxygen and fermentation materials and improve the oxygen uptake rate in the fermentation process.

Description

Technical Field

[0001] The invention relates to the technical field of stirring equipment, and in particular to a stirring paddle for a fermentation tank. Background Art

[0002] As one of the commonly used mixing technologies in modern industry, stirring has important applications in the fields of food, medicine, and chemical industry. As an important component of stirring equipment, the stirring paddle plays a vital role in the effect and efficiency of stirring. However, under aerobic fermentation conditions, the current stirring paddle cannot make the fermented materials contact with oxygen more fully, which affects the fermentation of the materials. Summary of the invention

[0003] In view of the above shortcomings of the prior art, the present invention provides a fermentation tank stirring paddle to improve the problem of low oxygen uptake during aerobic fermentation.

[0004] To achieve the above-mentioned purpose and other related purposes, the present invention provides a fermentation tank stirring paddle, the stirring paddle is sleeved on the stirring shaft, an air inlet hole is arranged in the stirring shaft, the air inlet hole is arranged along the axial direction of the stirring shaft, and the stirring paddle comprises a connecting sleeve, a connecting plate and a plurality of blades; the connecting sleeve is fixedly connected to the stirring shaft, and a plurality of through holes are evenly distributed along the circumference of the connecting sleeve, and the through holes are connected with the air inlet hole of the stirring shaft; the connecting plate is sleeved on the connecting sleeve, and a plurality of channels corresponding to the through holes are arranged on the connecting plate; the plurality of blades are fixedly connected to the connecting plate and evenly distributed along the circumference of the connecting plate, and a plurality of the blades are each provided with a accommodating cavity, the accommodating cavity is connected with an end of the corresponding channel away from the through hole, and a plurality of air outlet holes are arranged on the side wall of the accommodating cavity.

[0005] In an example of the present invention, the connecting sleeve is a cylindrical structure, the connecting plate is a disc-shaped structure, and the connecting sleeve and the connecting plate are coaxially arranged.

[0006] In one example of the present invention, the multiple blades are vertically arranged on the connecting plate, and the multiple blades are each provided with a first pore area and a second pore area, the first pore area and the second pore area are relatively arranged on the vertical side walls of the blades, and the first pore area and the second pore area are located radially outside the connecting plate.

[0007] In an example of the present invention, the diameter of the air outlet hole is 0.2-20 μm.

[0008] In one example of the present invention, the density of the vent holes is 10 to 50 per cm 2 .

[0009] In an example of the present invention, a slot is provided on one side of the blade close to the connecting plate, and two sides of the slot are respectively engaged with the upper surface and the lower surface of the connecting plate and sealed and fixed.

[0010] In an example of the present invention, a sealing ring is provided between the connecting sleeve and the stirring shaft, and a groove for placing the sealing ring is provided on the inner wall of the connecting sleeve.

[0011] In an example of the present invention, a chamber is provided between the connecting sleeve and the stirring shaft, and the stirring shaft and the connecting sleeve are communicated with each other through the chamber.

[0012] In an example of the present invention, the chamber is circumferentially arranged along the inner wall of the connecting sleeve.

[0013] In an example of the present invention, the connecting sleeve, the connecting plate and the plurality of blades are fixed by welding or integrally formed.

[0014] The fermentation tank stirring paddle provided by the present invention is provided with a plurality of air outlet holes on the side wall of the paddle accommodating cavity, and the air inlet hole on the stirring shaft is connected with the air outlet hole on the paddle through the through hole on the connecting sleeve and the channel on the connecting plate, and the gas diffuses into the fermentation tank through the air outlet hole. The stirring paddle introduces air into the fermentation tank while stirring, thereby increasing the interface area and exchange time between the oxygen in the air and the fermentation material, and improving the oxygen uptake rate during the fermentation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the cooperation between the stirring paddle of the fermentation tank and the stirring shaft in one embodiment of the present invention;

[0017] Figure 2 The cross-sectional view is a diagram showing the cooperation between the stirring paddle of a fermentation tank and a stirring shaft in one embodiment of the present invention.

[0018] Component number description

[0019] 100, connecting sleeve; 110, through hole; 120, groove; 130, chamber; 140, protrusion; 200, connecting plate; 210, channel; 300, paddle; 310, accommodating chamber; 320, slot; 400, stirring shaft; 410, air inlet. DETAILED DESCRIPTION

[0020] The following is an explanation of the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the features in the following embodiments and the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific embodiments, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or according to the conditions recommended by the manufacturers.

[0021] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" etc. used in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships, without substantially changing the technical content, should also be regarded as the scope of implementation of the present invention.

[0022] See also Figure 1 and Figure 2 The present invention provides a fermentation tank stirring paddle, which is mounted on a stirring shaft 400. The stirring shaft 400 has an air inlet 410 arranged along its axial direction. The air inlet 410 is connected to a ventilation pipeline for transporting air into the stirring paddle. The stirring paddle and the stirring shaft 400 should be made of a material that does not react with the material to avoid affecting the reaction of the material. For example, the material of the stirring paddle and the stirring shaft 400 is stainless steel or a polymer material. The stirring paddle includes a connecting sleeve 100, a connecting plate 200 and a plurality of blades 300. The stirring paddle diffuses air into the reaction system while stirring, thereby increasing the interface area and exchange time between oxygen in the air and the fermented material, and improving the oxygen uptake rate of the fermentation process.

[0023] The connecting sleeve 100 is fixedly connected to the stirring shaft 400 to realize synchronous rotation of the stirring paddle and the stirring shaft. A plurality of through holes 110 are evenly distributed along the circumference of the connecting sleeve 100, and the through holes 110 are connected to the air inlet 410 of the stirring shaft 400. The cross-sectional shape of the through holes 110 along the vertical direction is not limited here. For example, the cross-sectional shape of the through holes 110 along the vertical direction can be any other shape such as a rectangle, a square, a circle, a diamond, etc. The connecting plate 200 is sleeved on the connecting sleeve 100, and the connecting plate 200 is sealed and connected to the connecting sleeve 100. The connecting plate 200 is provided with a plurality of channels 210 corresponding to the through holes 110. The cross-sectional shape of the channel 210 along the vertical direction is consistent with the cross-sectional shape of the through hole 110 along the vertical direction.

[0024] A plurality of blades 300 are fixedly connected to the connecting plate 200 and are evenly distributed along the circumference of the connecting plate 200. The blades 300 can be in various shapes, such as a cylinder, a cuboid, a cube, etc. A receiving cavity 310 is provided on each of the plurality of blades 300, and the receiving cavity 310 is connected to the end of the corresponding channel 210 away from the through hole 110, and a plurality of air outlets are provided on the side wall of the receiving cavity 310. The shape of the air outlet can be any shape such as a rectangle, a square, a circle, etc. The gas enters the chamber 130 from the ventilation pipeline through the air inlet 410 of the stirring shaft 400, further enters the receiving cavity 310 through the channel 210 on the connecting plate 200, and diffuses into the fermentation tank through the air outlet on the receiving cavity 310.

[0025] See also Figure 1 and Figure 2 In one embodiment, a cylindrical through groove is provided in the middle of the connecting sleeve 100 for placing the stirring shaft 400, and the size of the cylindrical through groove matches the size of the stirring shaft 400. The connecting sleeve 100 is sleeved on the stirring shaft 400, and the stirring shaft 400 passes through the connecting sleeve 100 and is fixedly connected with the connecting sleeve 100. For example, the connecting sleeve 100 and the stirring shaft 400 are fixedly connected by welding or by fasteners. Preferably, the connecting sleeve 100 and the stirring shaft 400 are made of the same material, which is convenient for fixing the connecting sleeve 100 and the stirring shaft 400. Exemplarily, the materials of the connecting sleeve 100 and the stirring shaft 400 are both made of stainless steel, and the connecting sleeve 100 and the stirring shaft 400 are fixedly connected by welding. Preferably, a protrusion 140 is provided at the top or bottom of the connecting sleeve 100, and the protrusion 140 is fixedly connected to the stirring shaft 400 by fasteners to achieve a fixed connection between the connecting sleeve 100 and the stirring shaft 400. Exemplarily, a protrusion 140 is provided on the top of the connecting sleeve 100, and threaded holes are provided on the connecting sleeve 100 and the stirring shaft 400, and the threaded holes on the connecting sleeve 100 and the stirring shaft 400 match each other, and bolts pass through the threaded holes on the connecting sleeve 100 and the threaded holes on the stirring shaft 400 in sequence to fix the connecting sleeve 100 and the stirring shaft 400. At this time, the connecting sleeve 100 and the stirring shaft 400 are detachable, and it is convenient to replace if the air outlet hole on the blade 300 is blocked or other parts are damaged.

[0026] See also Figure 1 and Figure 2In one embodiment, a chamber 130 is provided between the connecting sleeve 100 and the stirring shaft 400, and the air inlet 410 and the connecting sleeve 100 are connected through the chamber 130, and the chamber 130 is arranged along the inner wall of the connecting sleeve 100. Preferably, a sealing ring is provided between the connecting sleeve 100 and the stirring shaft 400 to enhance the air tightness of the connection between the stirring shaft 400 and the stirring paddle, and a groove 120 for placing the sealing ring is provided on the inner wall of the connecting sleeve 100, and the inner ring of the sealing ring is sleeved on the stirring shaft 400 and in close contact with the stirring shaft 400, and the outer ring of the sealing ring is arranged in the groove 120 to prevent gas leakage in the chamber 130.

[0027] See also Figure 1 and Figure 2 In one embodiment, the connecting sleeve 100 is a cylindrical structure, the connecting plate 200 is a disc-shaped structure, the connecting sleeve 100 and the connecting plate 200 are coaxially arranged, and the through hole 110 passes through the connecting sleeve 100 in the radial direction. The number of through holes 110 and channels 210 is consistent with the number of blades 300, that is, each blade 300 corresponds to a through hole 110 and a channel 210, respectively. The number of blades 300 is not limited in the present application and can be adjusted according to usage requirements. Exemplarily, the number of blades 300 is six, and six through holes 110 and six channels 210 are respectively arranged on the connecting sleeve 100 and the connecting plate 200. In other embodiments, the number of blades 300 can also be eight, ten or other numbers. The connecting sleeve 100, the connecting plate 200 and the plurality of blades 300 are fixed by welding or integrally formed, and the air inlet hole 410 on the stirring shaft 400, the through hole 110 on the connecting sleeve 100, the channel 210 on the connecting plate 200 and the accommodating cavity 310 on the blade 300 are connected in sequence.

[0028] See also Figure 1 and Figure 2In one embodiment, a slot 320 is provided on one side of the blade 300 close to the connecting plate 200, and the two sides of the slot 320 are respectively engaged with the upper surface and the lower surface of the connecting plate 200 and sealed and fixed. The slot 320 can increase the contact area between the blade 300 and the connecting plate 200, so that the connection between the blade 300 and the connecting plate 200 is tighter. A plurality of blades 300 can be vertically arranged on the circumference of the connecting plate 200, or can be obliquely arranged on the circumference of the connecting plate 200, and the installation angle of the blade 300 is not limited here. The shape of the blade 300 refers to the prior art, and the shape of the blade 300 is not limited in this application. For example, the shape of the blade 300 can be arc-shaped, cube-shaped, cuboid-shaped or other shapes, as long as the blade 300 is provided with an air outlet, so that the stirring paddle can diffuse air into the material while stirring. In this embodiment, the blade 300 is a rectangular parallelepiped structure, and a plurality of blades 300 are vertically arranged on the connecting plate 200. The blade 300 is provided with a first pore area and a second pore area. The first pore area and the second pore area are relatively arranged on the vertical side walls of the blade 300, and the first pore area and the second pore area are located radially outside the connecting plate 200. The first pore area and the second pore area are both provided with a plurality of air outlet holes. In this embodiment, the shape of the air outlet holes is circular. Preferably, the diameter of the air outlet holes is 0.2 to 20 μm, and the density of the air outlet holes is 10 to 50 / cm 2 For example, the diameter of the pores is 0.2 μm, 5 μm, 10 μm or 20 μm, and the density of the pores is 10 / cm 2 , 20 pieces / cm 2 , 30 pieces / cm 2 or 50pcs / cm 2 The size and density of the vent holes are adjusted according to actual needs. For example, when the oxygen demand of the material reaction is large, the size or density of the vent holes can be increased accordingly. When the oxygen demand of the material reaction is small, the size or density of the vent holes can be reduced accordingly. The size or density of the vent holes can also be adjusted at the same time so that the air diffusion amount meets the actual reaction needs.

[0029] The fermentation tank stirring paddle provided by the present invention is provided with a plurality of air outlet holes on the side wall of the paddle accommodating cavity, and the air inlet holes on the stirring shaft are connected with the air outlet holes on the paddles through the through holes on the connecting sleeve and the channels on the connecting plate, and the gas diffuses into the fermentation tank through the air outlet holes. The stirring paddle introduces air into the fermentation tank while stirring, thereby increasing the interface area and exchange time between the oxygen in the air and the fermented material, and improving the oxygen uptake rate during the fermentation process. Therefore, the present invention effectively overcomes some practical problems in the prior art and has a high utilization value and use significance.

[0030] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A fermentation tank stirring paddle, mounted on a stirring shaft, It is characterized in that The stirring shaft has an air inlet hole arranged along its axial direction, and the air inlet hole is arranged along the axial direction of the stirring shaft. The stirring paddle includes: A connecting sleeve, fixedly connected to the stirring shaft, with a plurality of through holes evenly distributed along the circumference of the connecting sleeve, the through holes being connected to the air inlet holes of the stirring shaft; A connecting plate, sleeved on the connecting sleeve, wherein the connecting plate is provided with a plurality of channels corresponding to and communicating with the through holes; A plurality of blades are fixedly connected to the connecting plate and evenly distributed along the circumference of the connecting plate. A receiving cavity is provided on each of the plurality of blades. The receiving cavity is connected to an end of the corresponding channel away from the through hole. A plurality of air outlet holes are provided on the side wall of the receiving cavity.

2. The fermenter stirring paddle according to claim 1, It is characterized in that The connecting sleeve is a cylindrical structure, the connecting plate is a disc-shaped structure, and the connecting sleeve and the connecting plate are coaxially arranged.

3. The fermentation tank stirring paddle according to claim 1, It is characterized in that The multiple blades are vertically arranged on the connecting plate, and the multiple blades are each provided with a first pore area and a second pore area, the first pore area and the second pore area are relatively arranged on the vertical side walls of the blades, and the first pore area and the second pore area are located radially outside the connecting plate.

4. The fermentation tank stirring paddle according to claim 1, It is characterized in that The diameter of the air outlet hole is 0.2-20 μm.

5. The fermentation tank stirring paddle according to claim 1, It is characterized in that The density of the vent holes is 10 to 50 per cm 2 .

6. The fermentation tank stirring paddle according to claim 1, It is characterized in that A clamping groove is arranged on one side of the blade close to the connecting plate, and two sides of the clamping groove are respectively clamped with the upper surface and the lower surface of the connecting plate and sealed and fixed.

7. The fermentation tank stirring paddle according to claim 1, It is characterized in that A sealing ring is arranged between the connecting sleeve and the stirring shaft, and a groove for placing the sealing ring is arranged on the inner wall of the connecting sleeve.

8. The fermentation tank stirring paddle according to claim 1, It is characterized in that A chamber is provided between the connecting sleeve and the stirring shaft, and the air inlet and the connecting sleeve are communicated with each other through the chamber.

9. The fermentation tank stirring paddle according to claim 8, It is characterized in that The chamber is arranged circumferentially along the inner wall of the connecting sleeve.

10. The fermentation tank stirring paddle according to claim 1, It is characterized in that The connecting sleeve, the connecting plate and the plurality of blades are fixed by welding or formed as one piece.

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