CN116173561A

CN116173561A - Defoaming system

Info

Publication number: CN116173561A
Application number: CN202310291514.6A
Authority: CN
Inventors: 黄晓磊; 奚丽萍
Original assignee: Jiangyin Jinfeng Metal Technology Co ltd
Current assignee: Jiangyin Jinfeng Metal Technology Co ltd
Priority date: 2023-02-17
Filing date: 2023-03-23
Publication date: 2023-05-30
Also published as: CN219539504U

Abstract

The invention discloses a defoaming system, which comprises a defoaming mechanism arranged in an outer shell, wherein the shell of the defoaming mechanism consists of a small-caliber end and a large-caliber end which are mutually communicated, the outer walls of the small-caliber end and the large-caliber end are respectively provided with a liquid inlet and a liquid outlet, a small impeller and a large impeller sleeved on a driving shaft are respectively positioned in the small-caliber end and the large-caliber end, the opening ends of the small-caliber end and the large-caliber end are respectively provided with a vacuum extraction opening through a sealing piece and an end cover, and the vacuum extraction opening is communicated with a vacuumizing system after passing through a vacuum filter. The defoaming system provided by the invention has a better defoaming effect.

Description

Defoaming system

Technical Field

The invention relates to a defoaming system, and belongs to the technical field of defoaming.

Background

At present, in the fields of food, medicine, chemical industry and the like, the fluid is often required to be defoamed (i.e. defoamed) so as to eliminate foam in the fluid. The inventor of the patent develops and declares a defoaming mechanism in Chinese patent CN213313496U, and the defoaming effect is realized by crushing foam by an impeller, so that the practical use can meet the general application. However, when the defoaming requirement is higher, the fluid subjected to defoaming by the mechanism still has tiny foam which is not removed after being crushed under the observation of a magnifying glass, so that the fluid cannot be applied to occasions requiring high defoaming standards such as fine chemical engineering. For this reason, an apparatus having a more thorough defoaming effect is demanded.

Disclosure of Invention

The invention aims to overcome the defects and provide a defoaming system with better defoaming effect.

The purpose of the invention is realized in the following way:

the utility model provides a defoaming system, includes installs the defoaming mechanism in the shell body, the defoaming mechanism includes first cavity and second cavity, and the internal diameter of first cavity is less than the second cavity, and the axis setting of first cavity and second cavity is followed to the drive shaft, and epaxial little impeller and big impeller are located first cavity and second cavity respectively, are provided with inlet and liquid outlet on first cavity and the second cavity respectively, and the vacuum extraction opening on the second cavity communicates to the vacuum cleaner.

Preferably, the small impeller and the large impeller are of an integrated structure.

Preferably, the open end of the first chamber is sealed by a seal member that fits over the drive shaft and the open end of the second chamber is sealed by an end cap. .

Preferably, the vacuum filter comprises a barrel, the air inlet is installed to the lateral wall of barrel, the bottom of barrel is provided with the drain, and the cross-under has an exhaust tube on the top cap at barrel top, the movable sleeve is equipped with the rotor on the one end that the exhaust tube was inserted in the barrel, is provided with the paddle on the outer wall of rotor, be provided with a high-pressure gas air inlet on the top cap, the filter core of a tubular structure is installed to the bottom of rotor, and the top of this filter core is given vent to anger the end and is linked together with the bottom air inlet of exhaust tube.

Preferably, the cylinder is mounted in the outer housing by a bracket.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, efficient defoaming is realized in a centrifugal and vacuum adding mode, when fluid is thrown to the inner wall of the shell under the action of centrifugal force to form a circle of liquid layer, then the middle part of the liquid layer starts vacuumizing by using the vacuumizing device, foam in the liquid layer is continuously broken and escapes under the action of negative pressure of vacuum, the liquid layer after foam breaking flows out through the outlet under the action of different extrusion, and compared with the conventional pure physical beating and breaking, the defoaming effect is better and more thorough, and the defoamed fluid can be applied to high-end occasions.

Drawings

Fig. 1 is a schematic structural diagram of a defoaming system according to the present invention.

Fig. 2 is a schematic diagram of an internal structure of a defoaming system according to the present invention.

FIG. 3 is a schematic diagram of a defoaming mechanism according to the present invention.

Fig. 4 is a cross-sectional view A-A of fig. 3 in accordance with the present invention.

FIG. 5 is a left side view of the deaeration mechanism of the present invention.

FIG. 6 is a right side view of the deaeration mechanism of the present invention.

Fig. 7 is a schematic diagram of the working principle of the defoaming mechanism in the invention.

Fig. 8 is a schematic view of a vacuum filter according to the present invention.

Fig. 9 is a B-B cross-sectional view of fig. 8 in accordance with the present invention.

Wherein:

the device comprises a defoaming mechanism 1, a vacuum filter 2 and an outer shell 3;

1.1 parts of a shell, 1.2 parts of a driving shaft, 1.3 parts of a small impeller, 1.4 parts of a large impeller, 1.5 parts of a mechanical sealing mechanism, 1.6 parts of an end cover, 1.7 parts of a vacuum pumping hole, 1.8 parts of a coupling and 1.9 parts of a motor;

1.1.1 at the small-caliber end, 1.1.2 at the large-caliber end, 1.1.3 at the liquid inlet and 1.1.4 at the liquid outlet;

2.1 parts of a cylinder body, 2.2 parts of a top cover, 2.3 parts of an exhaust pipe, 2.4 parts of a rotating piece, 2.5 parts of a blade, 2.6 parts of a filter element, 2.7 parts of a bearing and 2.8 parts of a bracket;

2.1.1 air inlets and 2.1.2 drain outlets;

and a high-pressure gas inlet 2.2.1.

Description of the embodiments

Referring to fig. 1 to 7, the defoaming system provided by the invention comprises a defoaming mechanism 1 and a vacuum filter 2 which are arranged in an outer shell 3. Preferably, the defoaming mechanism 1 is located in a lower space in the outer casing 3, and the vacuum filter 2 is disposed in an upper space (as shown in fig. 2) in the outer casing 3, so that the inner hole space of the outer casing 3 is comprehensively utilized, and the overall floor area of the defoaming system is effectively reduced.

Referring to fig. 3-4, the defoaming mechanism 1 includes a housing 1.1, the housing 1.1 is a stepped cavity structure formed by a first cavity and a second cavity, that is, the housing 1.1 includes a small-caliber end 1.1.1 and a large-caliber end 1.1.2 which are mutually communicated, a liquid inlet 1.1.3 and a liquid outlet 1.1.4 which are arranged on the housing 1.1 are respectively communicated to the small-caliber end 1.1.1 and the large-caliber end 1.1.2, a driving shaft 1.2 driven by a motor 1.9 is inserted into the housing 1.1, and the driving shaft 1.2 extends into the small-caliber end 1.1.1 and the large-caliber end 1.1.2. Meanwhile, a small impeller 1.3 and a large impeller 1.4 are sleeved on the driving shaft 1.2, the small impeller 1.3 is positioned in the small-caliber end 1.1.1, the large impeller 1.4 is positioned in the large-caliber end 1.1.2, the small impeller 1.3 and the large impeller 1.4 are of an integrated structure, four small impellers 1.3 and eight large impellers 1.4 are uniformly arranged, and the sides of four large blades which are mutually spaced in the eight large impellers 1.4 are respectively connected with the sides of the four small impellers 1.3.

The driving shaft 1.2 inserted into the shell 1.1 seals one end of the shell 1.1 through a mechanical sealing mechanism 1.5 at the small-caliber end 1.1.1, the end cover 1.6 is sealed at the large-caliber end 1.1.2 of the shell 1.1, and a vacuum extraction opening 1.7 is arranged on the end cover 1.6 for vacuumizing; in use, the drive shaft 1.2, which is located outside the housing 1.1, is driven by the motor 1.9 via the coupling 1.8.

Referring to fig. 7, the defoaming mechanism of the invention integrates vacuum stirring type defoaming and centrifugal defoaming at the same time and has certain stirring and crushing functions. The working principle is as follows: after the fluid containing bubbles is sucked into the small-caliber end 1.1.1 of the shell 1.1, the fluid generates horn-shaped vortex cavities in the small-caliber end 1.1.1 and the large-caliber end 1.1.2 under the action of centrifugal force by virtue of the rotation of the small impeller 1.3 and the large impeller 1.4; at this time, the fluid containing bubbles is continuously stirred and sheared along the horn-shaped vortex, the position of the fluid is continuously changed, and the fluid is gradually thinned; meanwhile, the middle part of the large end of the horn-shaped vortex cavity in the large-caliber end 1.1.2 can continuously suck out bubbles in fluid through the extraction of the vacuum extraction opening 1.7; finally, a liquid outlet 1.1.4 is formed at the thinnest part of the fluid at the outer edge of the large end of the vortex bell mouth (the thinnest part is also the part which is easiest to suck out bubbles), and the fluid which is thoroughly defoamed is pumped out by utilizing the centrifugal force of the large impeller 1.4. The mechanism has the characteristics of good defoaming effect, continuous online work, difficult layering of fluid, more thorough defoaming and more than 3 times of the conventional defoaming mechanism.

Specifically, the method comprises the following steps: when the centrifugal impeller is used, fluid with foam enters the small-caliber end 1.1.1 through the liquid inlet 1.1.3, a liquid layer is formed on the inner wall of the small-caliber end 1.1 by continuous centrifugal force under the drive of the small impeller 1.3, and the blades of the small impeller 1.3 have a twist angle, so that the fluid thrown on the inner wall of the small-caliber end 1.1.1 has power for moving to the large-caliber end 1.1.2. The first mechanical breaking and defoaming of foam is realized in the process, and as the fluid entering the liquid inlet 1.1.3 is continuously increased, a liquid layer on the inner wall of the small-caliber end 1.1.1 enters the large-caliber end 1.1.2, and the operation in the small-caliber end 1.1.1 is repeated again under the drive of the large impeller 1.4 to perform the second mechanical breaking and defoaming, and then the liquid layer is thrown on the inner wall of the large-caliber end 1.1.2 under the action of centrifugal force to form the liquid layer and flows out through the liquid outlet 1.1.4; and in the process, the vacuum extraction opening 1.7 is in a negative pressure state after being extracted, so that the liquid layer is driven to move into the large-caliber end 1.1.2, and tiny bubbles formed by breaking in the liquid layer are continuously escaped and extracted by the vacuum extraction opening 1.7 in the negative pressure state, thereby realizing three active defoaming, and then the thoroughly defoamed liquid layer can flow out through the liquid outlet 1.1.4.

Referring to fig. 8 and 9, the vacuum filter 2 comprises a cylinder 2.1, an air inlet 2.1.1 is installed on the side wall of the cylinder 2.1, a drain outlet 2.1.2 is arranged at the bottom of the cylinder 2.1, an exhaust pipe 2.3 is connected to a top cover 2.2 on the top of the cylinder 2.1 in a penetrating way, a rotating member 2.4 is sleeved on one end of the exhaust pipe 2.3 inserted into the cylinder 2.1 through a bearing 2.7, paddles 2.5 are arranged on the outer wall of the rotating member 2.4, a high-pressure air inlet 2.2.1 is arranged on the top cover 2.2, the high-pressure air blows the paddles 2.5 to drive the rotating member 2.4 to rotate after entering through the high-pressure air inlet 2.2.1, a cylindrical filter element 2.6 is installed at the bottom of the rotating member 2.4, and the top end of the filter element 2.6 is communicated with the bottom air inlet of the exhaust pipe 2.3.

When the vacuum filter is used, the cylinder 2.1 is arranged in the outer shell 3 through the bracket 2.8, the support cylinder 2.1 is positioned above the defoaming mechanism 1, the vacuum extraction opening 1.7 is communicated with the air inlet 2.1.1, so that air extracted from the large-caliber end 1.1.2 is introduced into the cylinder 2.1, and then filtered through the filter element 2.6, and then introduced into the vacuum extraction system through the extraction pipe 2.3.

When the filter element is used for a period of time, the filter holes in the filter element 2.6 are gradually blocked, so that the filtering effect is influenced, at the moment, high-pressure gas is introduced through the high-pressure gas inlet 2.2.1 to push the blade 2.5, the filter element 2.6 is driven to rotate rapidly, impurities and moisture blocking the filter holes in the filter element 2.6 are rapidly thrown out under the action of centrifugal force by the rapidly rotating filter element 2.6, the self-cleaning effect is achieved, and the thrown impurities and moisture can be conveniently discharged through the drain outlet 2.1.2 at the bottom of the cylinder 2.1.

In addition: it should be noted that the above embodiment is only one of the optimization schemes of this patent, and any modification or improvement made by those skilled in the art according to the above concepts is within the scope of this patent.

Claims

1. The utility model provides a defoaming system, includes the defoaming mechanism who installs in the shell body, its characterized in that: the defoaming mechanism comprises a first chamber and a second chamber, the inner diameter of the first chamber is smaller than that of the second chamber, a driving shaft is arranged along the central axes of the first chamber and the second chamber, a small impeller and a large impeller on the driving shaft are respectively located in the first chamber and the second chamber, a liquid inlet and a liquid outlet are respectively formed in the first chamber and the second chamber, and a vacuum pumping hole in the second chamber is communicated to the vacuum filter.

2. A de-bubbling system according to claim 1, wherein: the small impeller and the large impeller are of an integrated structure.

3. A degassing system according to claim 1 or 2, characterized in that: the open end of the first chamber is sealed by a sealing member sleeved on the driving shaft, and the open end of the second chamber is sealed by an end cover.

4. A de-bubbling system according to claim 1, wherein: the vacuum filter comprises a barrel, an air inlet is arranged on the side wall of the barrel, a drain outlet is arranged at the bottom of the barrel, an exhaust pipe is connected to a top cover at the top of the barrel in a penetrating way, a rotating piece is movably sleeved on one end of the exhaust pipe inserted in the barrel, paddles are arranged on the outer wall of the rotating piece, a high-pressure air inlet is arranged on the top cover, a filter element with a cylindrical structure is arranged at the bottom of the rotating piece, and an air outlet end at the top of the filter element is communicated with the air inlet at the bottom of the exhaust pipe.

5. A defoaming system according to claim 4, characterized in that: the cylinder is arranged in the outer shell through a bracket.