Improved stirring shaft of fermentation tank

Abstract

The utility model discloses an improved stirring shaft of a fermentation tank, which comprises a shaft body, two first stirring components sequentially mounted along the shaft body from top to bottom, and positioning components matched with the first stirring components, each of the two first stirring assemblies comprises a ring body, a vertical plate arranged in the ring body, a locking piece mounted on the ring body and a plurality of first stirring blades distributed on the outer side of the ring body. Through the arrangement of the through holes, the distance between the upper first stirring blade and the lower first stirring blade is adjustable, the distance between the lower first stirring blade and the second stirring blade is also adjustable, and through the arrangement of the mounting plate and the disc, the number of the second stirring blades is also controllable; therefore, thalli and fermentation liquor on the bottom layer, the middle layer and the top layer in the fermentation tank can be correspondingly stirred, the thalli cannot be damaged, the thalli can be fully stirred and mixed, the consumed time is less, and the production is facilitated.

Description

Technical Field

[0001] The utility model specifically relates to an improved stirring shaft of a fermentation tank. Background Art

[0002] A stirring shaft is usually provided inside the fermentation tank, which is mainly used to stir and mix the bacteria and fermentation liquid inside the fermentation tank so that the two are mixed evenly. As the stirring shaft rotates, the gas inside the tank body will also be well dispersed in the liquid phase, so that the solid particles are evenly suspended in the liquid, and the mixing effect is enhanced, thereby achieving continuous large-scale biochemical production. It can be seen that the role of the stirring shaft in the fermentation tank is indispensable and plays an important role in improving the output and yield.

[0003] However, the existing stirring shaft structure is fixed, and the spacing of the stirring blades cannot be adjusted, and the number of stirring blades cannot be changed. The stirring effect of the bacteria and the fermentation liquid in the tank is poor, the mixing is uneven, and it takes a lot of time, which is not conducive to production.

[0004] Therefore, it is necessary to invent an improved stirring shaft of a fermenter to solve the above problems. Utility Model Content

[0005] (I) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes an improved stirring shaft of a fermentation tank. Through the setting of the through hole, the distance between the upper first stirring blade and the lower first stirring blade is adjustable, and the distance between the lower first stirring blade and the second stirring blade is also adjustable. Through the setting of the mounting plate and the disc, the number of the second stirring blades also becomes controllable, so that the bacteria and fermentation liquid in the bottom layer, middle layer and top layer in the fermentation tank can be stirred accordingly, the bacteria will not be damaged, and can be fully stirred and mixed, which consumes less time and is beneficial to production.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an improved stirring shaft of a fermentation tank, comprising a shaft body, two first stirring components sequentially installed from top to bottom along the shaft body, and a positioning component adapted to the first stirring components;

[0009] The two first stirring assemblies each include a ring body, a vertical plate disposed inside the ring body, a locking member installed on the ring body, and a plurality of first stirring blades distributed outside the ring body, and are used for mixing and stirring the solutions in the middle layer and the top layer of the fermentation tank;

[0010] The positioning assembly includes a slot provided at the bottom of the shaft body for the vertical plate to slide up and down, and a plurality of through holes provided at the front and rear sides of the shaft body for the locking member to be screwed into. The two first stirring assemblies can be flexibly mounted on the shaft body through the cooperation between the locking member and the through holes.

[0011] It also includes a second stirring component installed at the bottom end of the shaft body, which is used for mixing and stirring the bottom solution of the fermentation tank.

[0012] Preferably, the second stirring assembly includes a connecting column installed at the bottom of the shaft body, a disc connected to the bottom of the connecting column, a plurality of mounting plates distributed around the disc, and a second stirring blade connected to the mounting plate.

[0013] Preferably, a threaded hole for the connecting column to be screwed into is provided at the bottom of the shaft body, and each of the mounting plates is configured in a U-shape.

[0014] Preferably, each of the mounting plates is connected to the disc via fasteners.

[0015] Preferably, the through holes are evenly spaced from top to bottom on the shaft body and are adapted to the locking member.

[0016] Preferably, the first stirring blade is configured as a rectangular plate and is inclined, wherein the length of the first stirring blade located above is greater than the length of the first stirring blade located below, and the number of the first stirring blades on the first stirring component located above is set to two, while the number of the first stirring blades on the first stirring component located below is set to four.

[0017] Preferably, the second stirring blade is twisted as a whole and is arranged obliquely.

[0018] Compared with the prior art, the above technical solution of the utility model has the following beneficial effects:

[0019] The utility model opens a plurality of evenly spaced through holes on the shaft body, so that the installation positions of the upper first stirring blade and the lower first stirring blade can be adjusted according to the selection of the through holes, so that the area with less material in the top layer and the area with moderate material in the middle layer can be stirred accordingly according to the law of the solution layer in the fermentation tank, thereby ensuring that the bacteria are not damaged, and a controllable number of second stirring blades are installed at the bottom of the shaft body through a connecting column, so that the area with more material in the bottom layer can also be fully stirred and mixed, and through the cooperation of the through holes and the ring body, the spacing between the first stirring blade and the second stirring blade below it becomes controllable, thereby ensuring the mixing rate of the bacteria and the fermentation liquid, so that the fermentation speed of the fermentation tank using the stirring shaft is fast, the time consumption is short, and it is beneficial to production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the first stirring component of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the second stirring component of the utility model;

[0024] Figure 4 This is a schematic diagram of the shaft structure of the utility model.

[0025] Description of reference numerals:

[0026] 1 shaft body, 2 first stirring component, 21 ring body, 22 vertical plate, 23 locking piece, 24 first stirring blade, 31 slot, 32 through hole, 4 second stirring component, 41 connecting column, 42 disc, 43 mounting plate, 44 second stirring blade, 5 threaded hole. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] The utility model provides Figure 1-4 The improved stirring shaft of a fermentation tank shown in the figure comprises a shaft body 1, two first stirring components 2 sequentially installed along the shaft body 1 from top to bottom, and a positioning component adapted to the first stirring components 2;

[0029] The two first stirring assemblies 2 each include a ring body 21, a vertical plate 22 disposed inside the ring body 21, a locking member 23 mounted on the ring body 21, and a plurality of first stirring blades 24 distributed outside the ring body 21, for mixing and stirring the solutions in the middle layer and the top layer of the fermentation tank;

[0030] The positioning assembly includes a slot 31 provided at the bottom of the shaft body 1 for the vertical plate 22 to slide up and down, and a plurality of through holes 32 provided at the front and rear sides of the shaft body 1 for the locking member 23 to be screwed into. The two first stirring assemblies 2 can be flexibly installed on the shaft body 1 through the cooperation between the locking member 23 and the through holes 32;

[0031] It further includes a second stirring assembly 4 installed at the bottom end of the shaft body 1. The second stirring assembly 4 includes a connecting column 41 installed at the bottom of the shaft body 1, a disc 42 connected to the bottom of the connecting column 41, a plurality of mounting plates 43 distributed around the disc 42, and second stirring blades 44 connected to the mounting plates 43, which are used for mixing and stirring the solution at the bottom layer of the fermentation tank.

[0032] In one embodiment, a threaded hole 5 for the connecting column 41 to screw into is provided at the bottom of the shaft body 1, so that the second stirring blade 44 can be installed by screwing the connecting column 41 into the bottom of the shaft body 1. At the same time, in order to ensure that the second stirring blade 44 is always stable when the shaft body 1 rotates, the screwing direction of the threaded hole 5 should be opposite to the rotation direction of the shaft body 1. Each mounting plate 43 is arranged in a U-shape, and each mounting plate 43 is connected to the disc 42 through a fastener. The U-shaped mounting plate 43 can better fit the disc 42 after the fastener is tightened, so that the second stirring blade 44 is relatively stable after installation. Further, the fastener can be set as any one of a pin and a bolt.

[0033] In one embodiment, the through holes 32 are uniformly spaced from top to bottom on the shaft body 1 and are adapted to the locking member 23. The through holes 32 are evenly spaced, so that after the ring body 21 moves up or down, it can still be fastened to the shaft body 1 through the locking member 23. Therefore, before installation, the ring body 21 can move up and down along the card slot 31, so that the installation position of the ring body 21 is diverse and the distance between the two first stirring assemblies 2 is controllable.

[0034] In one embodiment, the first stirring blade 24 is arranged as a rectangular plate and is inclined. Among them, the length of the first stirring blade 24 located above is greater than the length of the first stirring blade 24 located below, and the number of the first stirring blades 24 on the first stirring assembly 2 located above is less than the length of the first stirring blades 24 on the first stirring assembly 2 located below. Since the solution in the fermentation tank is not uniform, before mixing and stirring, under the influence of gravity, there is relatively more material at the bottom layer of the fermentation tank. Therefore, in order to reduce the stirring intensity at the top layer, the number of the first stirring blades 24 above can be appropriately reduced, and the longer length of the first stirring blades 24 above is beneficial to breaking the rising bubbles and defoaming the solution in the tank body, improving the mixing and stirring effect of the solution. The second stirring blade 44 is integrally twisted and inclined. The twisted second stirring blade 44 can increase the shearing force on the solution in the tank body, improve the mixing efficiency, and the twisted second stirring blade 44 can enhance the shearing force, cope with the more materials at the bottom of the fermentation tank, reduce the generation of dead zones, and help improve the mixing efficiency.

[0035] The specific implementation method is as follows: when assembling the improved stirring shaft, the staff inserts a ring body 21 with two first stirring blades 24 into the interior of the shaft body 1 through the bottom opening of the slot 31, and pushes the ring body 21 upward, so that the ring body 21 slides upward along the outer side of the shaft body 1. When sliding to the desired position, the locking piece 23 is screwed into the through hole 32 at the position, so that the upper ring body 21 is fixed on the shaft body 1;

[0036] Then, another ring body 21 with four first stirring blades 24 is inserted into the interior of the shaft body 1 through the bottom opening of the slot 31 again, and pushed upward again until it slides to the desired installation position, and the locking piece 23 is screwed in again, so that the lower ring body 21 is fixed on the shaft body 1, and the distance between the upper ring body 21 and the lower ring body 21 can be adjusted by selecting the position of the through hole 32, so that the distance between the upper first stirring blade 24 and the lower first stirring blade 24 is adjustable, which can adapt to the solution layers of different bacteria and fermentation liquids, so that the solutions in the middle layer and the top layer can be stirred accordingly;

[0037] Finally, the staff screws the connecting column 41 into the threaded hole 5, and then fixes the mounting plate 43 on the disc 42 through fasteners. The number of mounting plates 43 can be adaptively adjusted to control the number of second stirring blades 44, thereby completing the assembly of the second stirring blades 44. At this time, the twisted second stirring blades 44 have a strong shear force, which can fully stir the materials at the bottom, so that the bacteria and the fermentation liquid in the bottom solution are fully mixed;

[0038] This embodiment specifically solves the problems in the prior art that the existing stirring shaft structure is fixed, the spacing of the stirring blades cannot be adjusted, the number of stirring blades cannot be changed, the stirring effect of the bacteria and fermentation liquid in the tank is poor, the mixing is uneven, it is time-consuming and not conducive to production.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An improved stirring shaft for a fermentation tank, characterized in that: It comprises a shaft (1), two first stirring components (2) installed in sequence from top to bottom along the shaft (1), and a positioning component adapted to the first stirring components (2); The two first stirring assemblies (2) each comprise a ring body (21), a vertical plate (22) arranged inside the ring body (21), a locking member (23) mounted on the ring body (21), and a plurality of first stirring blades (24) distributed outside the ring body (21), and are used for mixing and stirring solutions in the middle layer and top layer of the fermentation tank; The positioning assembly comprises a slot (31) formed at the bottom of the shaft body (1) and allowing the vertical plate (22) to slide up and down, and a plurality of through holes (32) formed at the front and rear sides of the shaft body (1) and allowing the locking member (23) to be screwed into. The two first stirring assemblies (2) can be flexibly mounted on the shaft body (1) through the cooperation between the locking member (23) and the through holes (32); It also includes a second stirring assembly (4) installed at the bottom end of the shaft body (1) and used for mixing and stirring the bottom solution of the fermentation tank.

2. The improved stirring shaft of a fermentation tank according to claim 1, characterized in that: The second stirring component (4) comprises a connecting column (41) mounted on the bottom of the shaft body (1), a disc (42) connected to the bottom of the connecting column (41), a plurality of mounting plates (43) distributed around the disc (42), and a second stirring blade (44) connected to the mounting plate (43).

3. The improved stirring shaft of a fermentation tank according to claim 2, characterized in that: A threaded hole (5) into which a connecting column (41) can be screwed is provided at the bottom of the shaft body (1), and each of the mounting plates (43) is arranged in a U-shape.

4. The improved stirring shaft of a fermentation tank according to claim 3, characterized in that: Each of the mounting plates (43) is connected to the disc (42) via a fastener.

5. The improved stirring shaft of a fermentation tank according to claim 1, characterized in that: The through holes (32) are evenly spaced from top to bottom on the shaft body (1) and are compatible with the locking piece (23).

6. The improved stirring shaft of a fermentation tank according to claim 1, characterized in that: The first stirring blade (24) is configured as a rectangular plate and is arranged obliquely, wherein the length of the first stirring blade (24) located at the top is greater than the length of the first stirring blade (24) located at the bottom, and the number of the first stirring blades (24) on the first stirring component (2) located at the top is set to two, while the number of the first stirring blades (24) on the first stirring component (2) located at the bottom is set to four.

7. The improved stirring shaft of a fermentation tank according to claim 2, characterized in that: The second stirring blade (44) is twisted as a whole and is arranged obliquely.

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