CN217265704U

CN217265704U - Rotational flow foam eliminator of fermentation tank

Info

Publication number: CN217265704U
Application number: CN202220679157.1U
Authority: CN
Inventors: 陆宁洲; 陆飞浩; 岑文学
Original assignee: Ningbo Xingbang Biochemical Equipment Co ltd
Current assignee: Ningbo Xingbang Biochemical Equipment Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-08-23
Anticipated expiration: 2032-03-25

Abstract

The utility model provides a whirl defoaming ware of fermentation cylinder which characterized in that: including disc baffle and whirl defoaming circle, the disc baffle is located the central point of whirl defoaming ware and puts, the periphery at the disc baffle is fixed to whirl defoaming circle, wherein the disc baffle is coaxial to be fixed on the central (mixing) shaft of fermentation cylinder, whirl defoaming circle is inside and outside multilayer butterfly structure, butterfly shell is inside to be separated into a plurality of whirl passageways through the baffle along circumference distribution, the interior week of every layer whirl defoaming circle has radial foam import, the periphery has radial export, and the upper surface axial has seted up a plurality of foam import window, foam import window department is equipped with the baffle that the foam of being convenient for got into. The utility model has the characteristics of rational in infrastructure, the defoaming is effectual, energy-efficient, accord with the GMP requirement, easily wash simultaneously, the sterilization operation, not long-pending material, no microbiological contamination risk.

Description

Rotational flow foam eliminator of fermentation tank

Technical Field

The utility model relates to a foam remove device especially relates to a whirl defoaming ware of fermentation cylinder, is applied to the fermentation cylinder in the industrialization large-scale production.

Background

In the fermentation process of liquid deep aerobic organisms, particularly in a fermentation tank in the industrial production process, a large ventilation amount and a high stirring speed are generated at the fermentation peak, a large amount of foam can be generated in the tank, so that the material escaping and the liquid escaping are caused, the living bacteria escaping, the waste of effective components of the fermentation liquid is caused, and the production environment is polluted. For some products such as erythritol, riboflavin, amino acid and other fermentation varieties with large foam quantity, the foam can increase the liquid level height in the fermentation tank, the charging coefficient of the fermentation tank is seriously influenced, and the yield of a single batch is influenced. The production of fermentation foam during the production process must therefore be controlled.

At present, the means for eliminating foam in industry mainly comprises two types of chemical methods and physical methods. The chemical method is to add an industrial defoaming agent, the added defoaming agent is usually an organic surfactant, the foam can be effectively removed when the defoaming agent is added into a tank, but the defoaming agent is used as an organic external source to interfere the normal metabolism of production bacteria and has certain toxicity to specific production strains; meanwhile, the defoaming agent cannot be metabolized by production bacteria, and residues in fermentation liquor enter a subsequent extraction and refining section and are difficult to remove, so that the quality of a final product is influenced. The physical defoaming method is characterized in that a defoaming paddle is additionally arranged on a stirring shaft, the defoaming paddle is in a zigzag shape, a snake-shaped grid bar shape 10 (as shown in figure 5) and the like, and the defoaming paddle can rotate together with the mechanical stirring shaft and break up peripheral foams during production. However, the defoaming effect of the traditional defoaming paddle depends on the specific foam form in the fermentation process, and the defects of small radial control surface and poor defoaming uneven effect exist. In addition, compressed air is injected into the fermentation tank to break foam, but the method can cause sudden change of the tank pressure in the fermentation tank in the period of foam removal, so that the production is unstable, an additional air source is needed, the energy consumption is increased, and meanwhile, the system pipeline is complex, is easy to be infected by bacteria, and has higher maintenance and investment cost.

Disclosure of Invention

The utility model aims to solve the technical problem that a rational in infrastructure, effectual, the energy-efficient whirl defoamer of fermentation cylinder is provided to foretell technical situation.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a whirl defoaming ware of fermentation cylinder which characterized in that: including disc baffle and whirl defoaming circle, the disc baffle is located the central point of whirl defoaming ware and puts, the periphery at the disc baffle is fixed to whirl defoaming circle, wherein the disc baffle is coaxial to be fixed on the central (mixing) shaft of fermentation cylinder, whirl defoaming circle is inside and outside multilayer butterfly structure, butterfly shell is inside to be separated into a plurality of whirl passageways through the baffle along circumference distribution, the interior week of every layer whirl defoaming circle has radial foam import, the periphery has radial export, and the upper surface axial has seted up a plurality of foam import window, foam import window department is equipped with the baffle that the foam of being convenient for got into.

As an improvement, a central shaft hole is formed in the middle of the disc baffle, a coupler is fixedly welded at the central shaft hole, and the disc baffle is fixed on a central stirring shaft of the fermentation tank through the coupler.

And the improvement is that the rotational flow defoaming ring is an inner layer or an outer layer, the innermost rotational flow defoaming ring is welded and fixed with the periphery of the disc baffle, the outer rotational flow ring is welded and fixed outside the adjacent inner rotational flow ring, defoaming grids are respectively installed at the radial outlets of the peripheries of the inner layer rotational flow defoaming ring and the outer layer rotational flow defoaming ring, and the defoaming grids of the inner layer rotational flow defoaming ring stretch into the foam inlet of the inner periphery of the adjacent outer layer rotational flow defoaming ring.

Further, the peripheral radial overall outlet direction of the rotational flow defoaming ring is in a horizontal or declination form, and the final included angle between the outlet and the horizontal plane is 0-20 degrees.

And furthermore, the defoaming grids are distributed in a right-angle rhombus shape formed by 45-degree oblique strips or in a rectangular shape formed by vertical strips and horizontal strips, wherein the included angle between the cross section of each vertical strip and the radial direction is 15-60 degrees.

Furthermore, a clapboard in the butterfly-shaped shell of the rotational flow defoaming ring is overlooked into a plane or a curved surface.

Still further, the baffle is the curved surface, and its crooked direction is opposite with the rotation direction of whirl defoaming circle.

And furthermore, the upper end surface of each cyclone defoaming ring is an inclined surface which is outwards inclined and downwards inclined, 4-12 partition plates are uniformly distributed at intervals, foam inlet windows on each cyclone defoaming ring are circumferentially and uniformly arranged at intervals, the number of the foam inlet windows corresponds to that of the cyclone channels, the baffle plates are arranged in a forward inclining mode, and the included angle between the baffle plates and the horizontal plane is 30-60 degrees.

And finally, the upper conical surface and the lower conical surface of the rotational flow defoaming ring are reduced and extended along with radial expansion. The height of the disc baffle is equal to or close to the height of the upper seal head weld line.

Compared with the prior art, the utility model has the advantages of: the disc baffle and the rotational flow defoaming ring are arranged, the rotational flow defoaming ring has an inner layer or an outer layer or a plurality of layers when viewed from top, and has a plurality of modes of upper and lower inlets, radial and axial inlets and the like, so that the foam treatment capacity is high; the foam is efficiently eliminated under various principles of extrusion defoaming, impact cutting defoaming and the like under the action of centrifugal force; uniform defoaming, stable liquid level, avoiding material escape caused by local foam protrusion on the liquid level; the fermentation tank is driven by a stirring shaft of the fermentation tank without additional external power sources such as an air source and the like; different from a defoaming mode of adding a chemical defoaming agent, the method does not interfere with the biological fermentation process, does not influence the extraction and refining in the later fermentation stage, and avoids influencing the quality of the final product. The utility model has the characteristics of rational in infrastructure, the defoaming is effectual, energy-efficient, accord with the GMP requirement, easily wash simultaneously, the sterilization operation, not long-pending material, no microbiological contamination risk.

Drawings

FIG. 1 is a schematic structural view of the embodiment of the present invention installed in a tank body;

fig. 2 is a top view of an embodiment of the present invention;

fig. 3a to 3C are schematic structural views of an anti-foam grille according to an embodiment of the present invention, wherein a is a 45 ° slanted grille, b is a rectangular grille, and C is a cross-sectional view of the rectangular grille along the C-C line;

FIG. 4 is a partial cross-sectional view taken along line B of FIG. 2;

FIG. 5 is a schematic diagram of a defoaming paddle device (snake-shaped grid) of a conventional fermentation tank.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 4, a rotational flow defoaming device of a fermentation tank comprises a disc baffle 3 and rotational flow defoaming rings 4 and 5, wherein the disc baffle 3 is positioned at the center of the rotational flow defoaming device, the rotational flow defoaming rings 4 and 5 are fixed at the periphery of the disc baffle 3, the rotational flow defoaming rings 4 and 5 are integrally inclined downwards along with radial expansion, and generally, the upper conical surface and the lower conical surface are both reduced and extended; the middle part of the disc baffle 3 is provided with a central shaft hole, the central shaft hole is fixedly welded with a coupler 1, the disc baffle 3 is fixed on a central stirring shaft 2 of a fermentation tank through the coupler 1, the height of the disc baffle 3 is equal to or close to the height of an upper seal head weld seam line, the cyclone defoaming rings 4 and 5 are of an inner-outer multilayer butterfly structure and are similar to a cylinder structure, preferably, the inner layer and the outer layer are arranged, the inner part of a butterfly shell is divided into a plurality of cyclone channels through a partition plate 6 distributed along the circumferential direction, the inner peripheries of each layer of the cyclone defoaming ring 4 and 5 are respectively provided with a

radial foam inlet

45 and 55, the outer peripheries of each layer of the cyclone defoaming ring 4 and 5 are respectively provided with a radial outlet 46 and a radial outlet 56, a plurality of

foam inlet windows

42 and 52 are respectively arranged on the

upper surfaces

41 and 51 in the axial direction, and the

baffles

43 and 53 convenient for foam to enter are arranged at the positions 2 of the

foam inlet windows

42 and 5.

The inner and outer swirl defoaming rings 4 and 5 are an inner layer and an outer layer, the inner layer swirl defoaming ring 4 is welded and fixed with the periphery of the disc baffle 3, the outer layer swirl ring 5 is welded and fixed outside the inner layer swirl ring 4, and defoaming grids 44 are respectively arranged at the radial outlets of the peripheries of the inner and outer two layers of swirl defoaming rings 4 and 5, wherein the defoaming grids 44 of the inner layer swirl defoaming ring 4 extend into the inner peripheral foam inlet 55 of the outer layer swirl defoaming ring 5; the periphery of the rotational flow defoaming ring is inclined downwards along the radial direction of an outlet, and the included angle beta between the final outlet and the horizontal plane is 0-20 degrees. The defoaming grille 44 is formed by 45-degree inclined bars into a right-angle rhombus distribution as shown in figure 3a, or is formed by vertical bars and horizontal bars into a rectangle distribution as shown in figure 3b, wherein the included angle gamma between the vertical bars and the radial direction is 15-60 degrees.

The overlooking direction of the partition plate 6 in the butterfly-shaped shells of the rotational flow defoaming rings 4 and 5 is a plane or a curved surface. The baffle 6 of this embodiment is preferably curved in a direction opposite to the direction of rotation of the swirl defoaming rings 4 and 5. The upper end surfaces and the lower end surfaces of the cyclone defoaming rings 4 and 5 are inclined surfaces which incline outwards and downwards, namely similar conical surfaces, the partition plates 6 are 4-12 which are uniformly distributed at intervals, the

foam inlet windows

42 and 52 on each layer of cyclone defoaming ring 4 and 5 are circumferentially and uniformly arranged at intervals, the number of the foam inlet windows corresponds to that of the cyclone channels, the

baffle plates

43 and 53 are arranged in a forward inclining mode, and the included angle alpha between the

baffle plates

43 and 53 and the horizontal plane is 30-60 degrees.

The specific working principle is as follows:

the rotational flow foam breaker rotates along with the central stirring shaft 2 in the fermentation process. When the foam rises, the foam is blocked by the disc baffle 3 and then is sucked into the inner layer and outer layer rotational flow defoaming rings 4 and 5 by the rotating centrifugal force, such as rd radial flow pattern in figure 1. When the amount of foam is large and the cyclone demister is submerged, the foam can be sucked from the upper part of the disc baffle 3, such as the ru radial flow pattern in figure 1. The foam can also be sucked in from the

foam inlet windows

42 and 52 opened on the

upper surfaces

41 and 51 of the inner and outer swirl defoaming rings 4 and 5, as in the au axial flow pattern in fig. 1. As shown in fig. 4, in order to increase the suction effect,

baffles

43 and 53 are provided at the rear ends of the

foam inlet windows

42 and 52, and the angle α between the

baffles

43 and 53 and the horizontal plane is equal to 30 ° to 60 °.

Since the swirl defoaming rings 4 and 5 decrease rapidly with radial expansion height, the inner space is compressed. The foam will be crushed to break as it moves inside. In order to increase the forced crushing effect and enhance the structural strength, as shown in fig. 2, 5 partition plates 6 are uniformly distributed in the cyclone defoaming rings 4 and 5 to separate the space, the bending direction of the partition plates is opposite to the rotating direction, and the partition plates belong to backward-bent blades.

The unbroken foam can be cut and broken by the defoaming grille 44 at the outlet of the inner layer rotational flow defoaming ring 4, as shown in fig. 4, the defoaming grille 44 can have various forms such as 45-degree oblique strip combination or straight strip and horizontal strip combination, and the specific form and parameters are selected and adjusted according to the material characteristics and the fermentation process. The defoaming grill 44 of the inner swirling defoaming ring 4 enters the outer swirling defoaming ring 5, where the foam is broken again due to the same structure and principle as the inner swirling defoaming ring 4. As shown in fig. 1, the angle beta between the final outlet direction of the cyclone defoaming rings 4 and 5 and the horizontal plane is equal to 20 degrees, and the angle beta is in a downward inclination form.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. a cyclone defoamer of a fermenter, is characterized in that: comprise disc baffle plate and swirl defoamer, the disc baffle is positioned at the central position of the swirl defoamer, and the swirl defoamer is fixed at the The outer circumference of the disc baffle, wherein the disc baffle is coaxially fixed on the central stirring shaft of the fermenter, the swirl defoaming ring is an inner and outer multi-layer butterfly structure, and the inner part of the butterfly shell passes through the partitions distributed along the circumferential direction. Divided into a plurality of swirl channels, each layer of swirl defoaming ring has radial foam inlets on the inner circumference and radial outlets on the outer circumference, and a number of foam inlet windows are axially opened on the upper surface, and the foam inlet windows are provided with convenient The baffle where the foam enters.

2. The cyclone defoamer according to claim 1, characterized in that: a central shaft hole is opened in the middle of the disc baffle, and a coupling is welded and fixed at the central shaft hole, and the disc baffle passes through the coupling. The shaft is fixed on the central stirring shaft of the fermenter.

3. The cyclone defoamer according to claim 1 is characterized in that: the cyclone defoaming ring is two or more layers inside and outside, and the innermost cyclone defoaming ring is welded with the outer periphery of the disc baffle Fixed, the outer swirl ring is welded and fixed outside the adjacent inner swirl ring, and the outer circumferential radial outlet of the inner and outer layers of the swirl and defoaming ring is respectively installed with an anti-foam grille. The foam grill extends into the foam inlet adjacent to the inner circumference of the outer cyclone defoaming ring.

4. The cyclone defoamer according to claim 3, wherein the radial outlet direction of the outer circumference of the cyclone defoamer is horizontal or downward, and the angle between the final outlet and the horizontal plane is 0-20 ° between.

5. The cyclone defoamer according to claim 4, characterized in that: the anti-foam grill adopts 45° oblique bars to form a right-angled rhombus distribution, or a rectangular distribution composed of vertical bars and horizontal bars, wherein The radial included angle of the cross section of the vertical bar is between 15° and 60°.

6 . The cyclone defoamer according to claim 1 , wherein the baffle in the butterfly-shaped shell of the cyclone defoamer is a plane or a curved surface. 7 .

7 . The cyclone defoamer according to claim 6 , wherein the baffle is a curved surface, and its bending direction is opposite to the rotation direction of the cyclone defoamer. 8 .

8 . The cyclone defoamer according to claim 7 , wherein the upper end surface of the cyclone defoamer is inclined outward and downward, and the baffles are 4 to 12 evenly spaced. 9 . , The foam inlet windows on each layer of swirl defoaming ring are arranged at uniform intervals in the circumferential direction, and the number corresponds to the number of swirl channels.

9 . The cyclone defoamer according to any one of claims 1 to 8 , wherein the cyclone defoamer ring is lowered and extended with radial expansion.