Defoaming evaporation tank
By designing a defoaming evaporation tank containing a stirring shaft and a defoamer, the problem of bubbles generated in the evaporation tank is solved by using rotary stirring and defoaming leaves and needles to break the bubbles, and the problem of bubbles in the evaporation tank is solved, achieving efficient defoaming and low-cost effects.
Patent Information
- Application Number
- CN202422429744.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-09
AI Technical Summary
The existing evaporation tanks produce a large number of bubbles during the production process, resulting in material disconnection. The existing defoaming methods have problems such as high cost, poor results or inconvenient cleaning.
A defoaming evaporation tank is designed, which includes a stirring shaft and a defoamer. The agitator is used to rotate the stirring liquid and crush the bubbles with the defoamer blade and the defoamer needle. The defoamer is installed above the agitating shaft to avoid direct contact with the liquid level to reduce power consumption. The defoaming leaves are arranged in a misaligned manner to improve the effect.
It achieves efficient defoaming, reduces manufacturing costs, is easy to maintain, and significantly improves the defoaming effect.
Smart Images
Figure CN223158843U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical equipment, in particular to an antifoaming evaporation tank. Background Art
[0002] In industries such as pharmaceuticals and chemicals, evaporation tanks are needed for material extraction. During the production process of existing evaporation tanks, a large number of bubbles often occur inside, resulting in material leakage and reducing the extraction rate of materials. Currently, the antifoaming methods in evaporation tanks mainly include chemical antifoaming method, physical antifoaming method, and mechanical antifoaming method.
[0003] The main function of chemical antifoaming agents is to inhibit the generation of bubbles and accelerate the rupture of bubbles simultaneously. When using chemical antifoaming agents, the antifoaming agent must be mixed with the product in the form of an additive. The addition of chemical components will affect the product purity. If evaporation occurs in an organic environment, complex chemical reactions may also occur. Although new chemical antifoaming agent products are constantly emerging, due to factors such as their high price, the increased input cost caused by the complex discharge and recovery processes, and the cumbersome production process for obtaining high-purity products, their application is limited.
[0004] Physical antifoaming mainly includes high-temperature and low-temperature antifoaming methods, acoustic antifoaming method, liquid spraying antifoaming method, and mechanical vibration method, etc. Physical antifoaming method is obvious in effect when dealing with a particularly large throughput. The elimination of foam in small and medium-sized equipment will vary greatly according to the different characteristics of the medium. In addition, due to the high cost of the device and its operation, it has not been widely used so far.
[0005] Mechanical antifoaming method, as an economical, green, and non-toxic antifoaming form, has been widely adopted. Mechanical antifoaming method mainly uses rotation to change the pressure and shear force acting on the bubbles to achieve the purpose of defoaming. However, for the mechanical antifoaming devices in the prior art, either the structure is simple but the defoaming effect is not good; or the multi-structure design is complex, the cost is high, and it is inconvenient to clean. Content of the Utility Model
[0006] The purpose of the utility model is to provide an antifoaming evaporation tank to solve the problems existing in the prior art.
[0007] The purpose of the utility model is achieved as follows: An antifoaming evaporation tank includes a tank body. A stirring shaft is arranged inside the tank body. Stirrers are installed at the middle and lower part and the bottom of the stirring shaft. An antifoaming device is installed at the middle and upper part of the stirring shaft. The antifoaming device includes an installation sleeve which is sleeved on the stirring shaft. The installation sleeve is connected with a stirring paddle extending horizontally. U-shaped tubular antifoaming blades are evenly distributed on both the upper and lower sides of the stirring paddle. Antifoaming needles are evenly distributed on the front surface of the stirring paddle.
[0008] The defoaming evaporation tank of the present utility model stirs the liquid material through the rapid rotation of two layers of stirrers, accelerating the reaction rate and improving the reaction effect. During the stirring process, the liquid material impacts the inner wall of the tank under the action of the stirrers. This impact centrifugal force causes some of the bubbles in contact with the inner wall of the tank to break. The bubbles in the vortex center of the stirrer quickly float up and contact the defoamer. During the rotation of the defoamer, a large number of bubbles are broken up by the stirring blades and defoaming leaves, and the fine bubbles are punctured and broken by the defoaming needles. In summary, the defoaming evaporation tank of the present utility model has the advantages of simple structure, low manufacturing cost, good defoaming effect, and convenient maintenance.
[0009] As a further improvement of the present utility model, the defoaming leaves located on the upper and lower sides of the stirring blades are arranged in a staggered manner, further improving the defoaming effect.
[0010] As a further improvement of the present utility model, the installation sleeve includes a semi-circular left body and a right body. Connecting ears are provided at the positions of the left body and the right body close to the docking surface, improving the installation efficiency of the defoamer.
[0011] As a further improvement of the present utility model, the installation height of the defoamer is 30 - 60 mm above the liquid level in the tank, avoiding direct contact with the liquid level and reducing the power consumption during the working process.
[0012] As a further improvement of the present utility model, a necking part is provided at the position of the stirring shaft corresponding to the installation position of the defoamer, facilitating the installation and positioning of the defoamer.
[0013] As a further improvement of the present utility model, the defoaming leaf is formed by bending a round tube with a diameter of φ14 mm, with a simple structure and low cost. Description of the Drawings
[0014] Figure 1 It is a schematic diagram of the defoaming evaporation tank of the present utility model.
[0015] Figure 2 It is a schematic diagram of the defoamer of the defoaming evaporation tank of the present utility model.
[0016] Figure 3 It is Figure 2 the top view of
[0017] Among them, 1 is the tank body, 2 is the stirring shaft, 3 is the stirrer, 4 is the defoamer, 4A is the installation sleeve, 4B is the stirring blade, 4C is the defoaming leaf, 4D is the defoaming needle, and 4E is the connecting ear. Detailed Embodiments
[0018] As Figures 1-3 shown in the defoaming evaporation tank, it includes a tank body 1. The tank body 1 is provided with a stirring shaft 2 inside. The upper end of the stirring shaft 2 extends out of the tank body 1 and is connected to the driving device. The middle lower part and the bottom of the stirring shaft 2 are provided with stirrers 3, and the middle upper part of the stirring shaft 2 is provided with a defoamer 4.
[0019] The defoamer 4 includes an installation sleeve 4A which is sleeved on the stirring shaft 2. The stirring shaft 2 is provided with a necking part corresponding to the installation position of the defoamer 4, which is convenient for the installation and positioning of the defoamer 4. Preferably, the installation height of the defoamer 4 is 30 - 60 mm above the liquid level in the tank body 1, so as to avoid direct contact with the liquid level, thereby reducing the power consumption during the working process. The installation sleeve 4A includes a semi-circular left body and right body. Connecting ears 4E are provided at positions of the left body and the right body close to the docking surface. Thus, the installation of the defoamer 4 can be completed by connecting the opposite connecting ears 4E with bolts.
[0020] The installation sleeve 4A is welded with a stirring paddle 4B extending horizontally. U-shaped tubular defoaming blades 4C are evenly distributed on both the upper and lower sides of the stirring paddle 4B. The defoaming blades 4C located on the upper and lower sides of the stirring paddle 4B are arranged in a staggered manner to further improve the defoaming effect. The defoaming blade 4C is formed by bending a round tube with a diameter of φ14 mm, with a simple structure and low cost. Defoaming needles 4D are evenly distributed on the front surface of the stirring paddle 4B (i.e., the side facing the bubbles when the stirring shaft rotates).
[0021] In the defoaming evaporation tank of this embodiment, through the rapid rotation of the two-layer stirrer 3, the liquid material is stirred to accelerate the reaction rate and improve the reaction effect. During the stirring process, the liquid material impacts the inner wall of the tank body 1 under the action of the stirrer 3. This impact centrifugal force will cause some of the bubbles in contact with the inner wall of the tank body 1 to break. The bubbles at the vortex center of the stirrer 3 quickly float up and contact the defoamer 4. During the rotation of the defoamer 4, a large number of bubbles are scattered and broken by the stirring paddle 4B and the defoaming blades 4C, and the fine bubbles are punctured and broken by the defoaming needles 4D, with good defoaming effect and convenient cleaning.
[0022] The present utility model is not limited to the above embodiments. Based on the technical solutions disclosed in the present utility model, those skilled in the art can make some substitutions and deformations to some of the technical features without creative labor according to the disclosed technical content, and these substitutions and deformations are all within the protection scope of the present utility model.
Claims
1. An antifoaming evaporation tank, comprising a tank body, wherein a stirring shaft is arranged in the tank body, and stirrers are installed at the middle-lower part and the bottom of the stirring shaft, and it is characterized in that: An anti-foaming device is installed in the upper-middle part of the stirring shaft. The anti-foaming device includes an installation sleeve which is sleeved on the stirring shaft. The installation sleeve is connected with a stirring paddle extending horizontally. Anti-foaming blades in the shape of U-shaped tubes are evenly distributed on both the upper and lower sides of the stirring paddle, and anti-foaming needles are evenly distributed on the front surface of the stirring paddle.
2. The defoaming evaporation tank according to claim 1, wherein: The anti-foaming blades located on both the upper and lower sides of the stirring paddle are arranged in a staggered manner.
3. The defoaming evaporation tank according to claim 1, wherein: The installation sleeve includes a semi-circular left body and a right body, and connecting ears are provided at positions of the left body and the right body close to the docking surface.
4. The defoaming evaporation tank according to any one of claims 1-3, characterized in that: The installation height of the anti-foaming device is 30 - 60 mm above the liquid level in the tank.
5. The defoaming evaporation tank according to any one of claims 1-3, characterized in that: A necking-down part is provided on the stirring shaft corresponding to the installation position of the anti-foaming device.
6. The defoaming evaporation tank according to any one of claims 1-3, characterized in that: The anti-foaming blade is formed by bending a round tube with a diameter of φ14 mm.