Defoaming, dispersing and stirring device

Abstract

The utility model discloses a defoaming, dispersing and stirring device, and belongs to the technical field of chemical raw material treatment. The dispersing and stirring mechanism and the defoaming and stirring mechanism are arranged in the tank body, the dispersing and stirring mechanism comprises a stirring shaft and two layers of disc type paddles which are arranged on the stirring shaft in parallel, and the two layers of disc type paddles are arranged at the lower half part of the tank body; the defoaming and stirring mechanism comprises a stirring shaft, flat blade type paddles and two layers of folding blade type paddles, the flat blade type paddles and the two layers of folding blade type paddles are arranged on the stirring shaft in parallel, the flat blade type paddles are arranged at the upper half part of the tank body, and the two layers of folding blade type paddles are arranged at the lower half part of the tank body. The stirring and defoaming mechanism and the dispersing and stirring mechanism are arranged in the same container, so that foam generated in a system can be quickly removed in time under the condition of ensuring that a solution is fully and uniformly dispersed, and the uniform stability of the solution is kept.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical raw material treatment, and more specifically, relates to an anti-foaming and dispersing stirring device. Background Technique

[0002] Solution foaming is a common process phenomenon in industries such as chemical engineering and pharmaceuticals. The generation of foam will cause the loss of effective components of the solution, the pollution of equipment, and then the reduction of the effective use volume of the equipment. Therefore, it is crucial to effectively eliminate redundant foam in the production process.

[0003] At present, the commonly used foam elimination methods in industrial fields such as chemical engineering and pharmaceuticals are mechanical defoaming method, chemical defoaming method and natural defoaming method. The mechanical defoaming method uses stirring rotation to shear and disperse the foam. Using a single stirring shear to disperse the defoaming takes a long time, and the production workbench time increases accordingly. Chemical defoaming is achieved by adding defoaming agents. Since the use of defoaming agents may destroy the solution stability and react with the solution components, this method is less used in the pharmaceutical industry. The natural defoaming method is to achieve the gas-liquid separation by the continuous loss of the liquid in the foam liquid film causing the rupture of the bubble liquid film or the diffusion of the gas between bubbles. This defoaming method has a long cycle and low efficiency, and is also less used in practical applications.

[0004] After retrieval, the Chinese patent application number is: 201721807271.3, the application date is: December 31, 2017, and the invention creation name is: A double-shaft stirring device for chemical raw materials with anti-foaming function. The stirring device of this application case includes a machine shell, a worm, a worm gear, a rectangular anti-foaming net, a floating ball and an auxiliary stirring device. A worm is horizontally installed inside the machine shell. Stirring blades are fixedly installed at intervals on the worm. A worm gear is meshed and connected at the central position of the worm. A rotating shaft is embedded inside the worm gear. Rectangular anti-foaming nets are evenly installed at intervals on both the upper and lower sides of the anti-foaming rod. A floating ball is installed between the rectangular anti-foaming nets; an auxiliary stirring device is installed on the lower side of the rotating shaft, and a spring is connected between the sliding rod and the rotating shaft. This application case improves the stirring effect by setting horizontal stirring and vertical stirring. At the same time, an anti-foaming net is set to absorb the generated foam. However, in this application case, by setting horizontal and vertical stirring devices, more foam is generated in the container, and only by absorbing through the anti-foaming net, the defoaming effect is difficult to achieve the expected value. Content of the Utility Model

[0005] 1. Problems to be Solved

[0006] In view of the problems of poor stirring uniformity, easy foaming of the solution and poor defoaming effect when the existing chemical raw material solutions are prepared, the utility model provides a defoaming, dispersing and stirring device, which can quickly remove the foam generated in the system in time while ensuring that the solution is fully dispersed and uniform, so as to maintain the uniform stability of the solution.

[0007] 2. Technical solution

[0008] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0009] The utility model discloses a defoaming, dispersing and stirring device, comprising a tank body and a dispersing and stirring mechanism and a defoaming and stirring mechanism arranged in the tank body, wherein:

[0010] The dispersing and stirring mechanism comprises a stirring shaft and two layers of disc-shaped blades arranged in parallel on the stirring shaft, and the two layers of disc-shaped blades are arranged in the lower half of the tank body;

[0011] The defoaming stirring mechanism comprises a stirring shaft and a flat blade paddle and two layers of folding blade paddles arranged in parallel on the stirring shaft, wherein the flat blade paddle is arranged on the upper half of the tank body, and the two layers of folding blade paddle are arranged on the lower half of the tank body.

[0012] Furthermore, the stirring shafts of the dispersing stirring mechanism and the defoaming stirring mechanism are respectively connected to different motor drives.

[0013] Furthermore, the disc-type blade includes a first disc-type blade and a second disc-type blade, wherein the first disc-type blade is arranged at a height of 1 / 4 to 1 / 3 from the bottom of the vertical tank wall of the tank body, and the second disc-type blade is arranged at the bottom position of the vertical tank wall of the tank body.

[0014] Furthermore, the first disc-type blade includes a plurality of equally spaced spikes, the plurality of spikes are radially distributed, and a spiral blade is provided between any two adjacent spikes, and the length of the spike is greater than the radius of the spiral blade.

[0015] Furthermore, the radius of the spiral blade decreases successively along its rotation direction.

[0016] Furthermore, the folding blade blade includes a first folding blade blade and a second folding blade blade, the first folding blade blade is arranged at the same height as the first disc blade, and the second folding blade blade is arranged at the same height as the second disc blade.

[0017] Furthermore, the first folding blade and the second folding blade are staggered.

[0018] Further, the first folded - blade impeller includes a mounting shaft and at least two inclined blades. The inner side wall of the mounting shaft is fixedly installed on the second stirring shaft, and the two inclined blades are installed on the outer side wall of the mounting shaft at equal intervals.

[0019] Further, the included angle formed by the inclined blade and the vertical plane is 30° - 60°.

[0020] Further, the number of the inclined blades of the first folded - blade impeller is 3.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] (1) For the defoaming and dispersing stirring device of the present utility model, by setting up the dispersing and stirring mechanism and optimizing its structure design, it ensures that during the dissolution and dispersion of chemical raw materials, the shearing performance is very high under high - speed rotation, the processing viscosity range is wide, and its structure is simple, small in volume and convenient for maintenance.

[0024] (2) For the defoaming and dispersing stirring device of the present utility model, by setting up the defoaming stirring device, it speeds up the time for eliminating the solution foam and ensures the uniformity of the gas - liquid phase mixing, avoiding affecting the product quality.

[0025] (3) For the defoaming and dispersing stirring device of the present utility model, by installing the dispersing and stirring mechanism and the defoaming stirring mechanism in the same tank, and the dispersing and stirring mechanism and the defoaming stirring mechanism are independently driven by different motors and can be started separately. Thus, it can start the corresponding stirring according to different working conditions. When the defoaming stirring mechanism is started, it can quickly defoam. After the defoaming is completed, the dispersing and stirring mechanism is started to adjust the solution viscosity. The combined use of the two stirring mechanisms not only reduces the working time but also strengthens the mixing effect.

[0026] (4) For the defoaming and dispersing stirring device of the present utility model, it adopts frequency conversion control, so it can be adjusted according to the amount of solution bubbles and viscosity, thus more efficiently matching the load, avoiding the problem of wasting electric energy due to different working loads, reducing the impact current during startup, increasing the service life of the equipment, and reducing the maintenance cost. Brief description of the drawings

[0027] Figure 1 is a schematic structural diagram of the defoaming and dispersing stirring device of the present utility model;

[0028] Figure 2 is a top - view structural diagram of the defoaming stirring mechanism of the present utility model;

[0029] Figure 3It is a top view structural schematic diagram of the disk - type blade of the present utility model;

[0030] Figure 4 It is a structural schematic diagram of the folded - blade paddle of the present utility model.

[0031] In the figure:

[0032] 1. Tank body; 2. First stirring shaft; 3. Second stirring shaft; 4. First disk - type blade; 41. Spiral fan blade; 42. Spikes; 5. Second disk - type blade; 6. First folded - blade; 61. Mounting shaft; 62. Inclined blade; 7. Second folded - blade; 8. Flat - blade; 9. First motor; 10. Second motor. Specific embodiments

[0033] It should be noted that, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the protection content of the present utility model.

[0034] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0035] The following further describes the present utility model in combination with specific embodiments.

[0036] Embodiment 1

[0037] As Figure 1As shown in the figure, an antifoaming and dispersing stirring device according to this embodiment includes a tank body 1. Two channels are provided at the top of the tank body 1 for installing a first stirring shaft 2 and a second stirring shaft 3 respectively. The top of the first stirring shaft 2 is drivingly connected to a second motor 10, and the top of the second stirring shaft 3 is drivingly connected to a first motor 9. The stirring device of this embodiment includes a dispersing and stirring mechanism and an antifoaming and stirring mechanism arranged in the tank body 1. The two stirring mechanisms are independently installed and independently driven by a frequency conversion motor, which can achieve frequency conversion control, can be adjusted according to the amount of solution bubbles and viscosity during the process of preparing the solution, so as to more efficiently match the load, can avoid the problem of wasting electric energy due to different working loads, reduce the impact current during startup, improve the service life of the equipment, and reduce the equipment maintenance cost.

[0038] Specifically, in this embodiment, by arranging a dispersing and stirring mechanism in the tank body 1, it can be used to uniformly blend two or more materials into one body to obtain a stable product with a uniform liquid phase. On the other hand, by arranging an antifoaming and stirring mechanism in the tank body 1, it can be used to shear and break the bubbles generated during the circulation or transfer of the materials, quickly eliminate the bubbles in the materials, and ensure the uniformity of the gas-phase and liquid-phase mixing, so as to shorten the time for the materials to disperse and dissolve with each other, thereby reducing the production time per shift in the workshop and improving the product quality.

[0039] To further improve the uniform stability of the solution dispersion and quickly and effectively eliminate the bubbles in the solution system, the dispersing and stirring mechanism described in this embodiment specifically includes a first stirring shaft 2 and two layers of disk-type blades arranged in parallel on the first stirring shaft 2, and the two layers of disk-type blades are arranged in the lower half of the tank body 1. Through the arrangement of the two layers of disk-type blades and the optimized design of the position distribution of the blades, on the basis of ensuring its stirring performance, the shearing performance under high-speed rotation can be improved, the range of solution viscosities that can be processed is wider, and at the same time, the prepared solution is uniformly dispersed and has a high dispersion quality.

[0040] The antifoaming and stirring mechanism includes a second stirring shaft 3 and a flat blade 8 and two layers of folded blades arranged in parallel on the second stirring shaft 3. The flat blade 8 is arranged in the upper half of the tank body 1, and the two layers of folded blades are arranged in the lower half of the tank body 1. By setting two different types of blades and optimizing the installation positions of different blades, defoaming can be carried out quickly, the bubbles generated in the solution can be quickly pierced and eliminated. Compared with conventional mechanical defoaming or using a defoaming plate with pointed teeth for defoaming, the defoaming time is significantly shortened, and at the same time, the uniformity of the gas-phase and liquid-phase mixing is ensured, avoiding affecting the product quality.

[0041] In addition, a flat blade impeller 8 is provided on the upper half of the tank body 1. The flat blade impeller 8 includes two straight blades. Such a design endows the flat blade impeller 8 with certain rigidity and strength, enabling it to withstand the centrifugal force generated during high-speed rotation.

[0042] Embodiment 2

[0043] As Figure 3 shown, a defoaming and dispersing stirring device in this embodiment has basically the same main structure as that in Embodiment 1. The difference between it and Embodiment 1 lies in that: the disk impeller includes a first disk impeller 4 and a second disk impeller 5. The first disk impeller 4 is arranged at a height of 1 / 4 to 1 / 3 from the bottom of the vertical tank wall of the tank body 1. Specifically in this embodiment, the disk impeller 4 is arranged at a height of 1 / 3 from the bottom of the vertical tank wall of the tank body 1. At the same time, the second disk impeller 5 is arranged at the bottom position of the vertical tank wall of the tank body 1. Such an arrangement can further improve the shearing performance of the disk impeller under high-speed rotation, thereby enabling the treatment of fluids with a wide viscosity range.

[0044] It should be noted that the structures of the first disk impeller 4 and the second disk impeller 5 are completely the same. The following takes the specific structure of the first disk impeller 4 as an example for illustration. The first disk impeller 4 includes a plurality of spikes 42 distributed at equal intervals. The plurality of spikes 42 are radially diverging, and a spiral fan blade 41 is provided between any two adjacent spikes 42. Through the optimized design of the specific structure of the first disk impeller 4, the dispersion effect of the solution is effectively improved.

[0045] In addition, the length of the spike 42 is greater than the radius of the spiral fan blade 41. The radius of the spiral fan blade 41 gradually decreases along its rotation direction. During the solution preparation process, the shearing performance is very high, and the dispersion, fragmentation, and peeling effects are strong, which are suitable for operations such as high-shear, dispersion, emulsification, and dissolution. In addition, the setting of the spikes 42 can also puncture the generated foam during the stirring process, further improving the defoaming effect.

[0046] As Figure 1 and Figure 4 shown, the pitched blade impeller includes a first pitched blade impeller 6 and a second pitched blade impeller 7. The installation height of the first pitched blade impeller 6 is the same as that of the first disk impeller 4, and the installation height of the second pitched blade impeller 7 is the same as that of the second disk impeller 5, so that the foam in the solution is sheared and broken under the centrifugal force, accelerating the time for eliminating the solution foam.

[0047] Furthermore, as Figure 2 shown, the first pitched blade impeller 6 and the second pitched blade impeller 7 are staggeredly arranged to ensure that the impellers can generate sufficient shearing force during the stirring operation to quickly eliminate the foam.

[0048] Embodiment 3

[0049] As Figure 4 shown, a defoaming, dispersing and stirring device according to this embodiment has a main structure basically the same as that of Embodiment 2. The difference between it and Embodiment 2 is that the structures of the first folded-blade impeller 6 and the second folded-blade impeller 7 are completely the same. Hereinafter, the specific structure of the first folded-blade impeller 6 will be taken as an example for description. Specifically, the first folded-blade impeller 6 includes a mounting shaft 61 and at least two inclined blades 62. The inner side wall of the mounting shaft 61 is fixedly installed on the second stirring shaft 3. The two inclined blades 62 are equidistantly installed on the outer side wall of the mounting shaft 61, and the included angle formed by the inclined blade 62 and the vertical plane is 30° to 60°. By setting the inclined blade 62 and optimizing the inclination angle of the inclined blade 62, the material can circulate in the container, and the solution has a good effect of turning up and down. The foam can be broken by stirring and shearing, which plays an important role in the defoaming process. In this embodiment, the number of the inclined blades 62 of the first folded-blade impeller 6 is specifically 3, and the included angle formed by the inclined blade 62 and the vertical plane is 45°, which is beneficial to improving the defoaming speed and defoaming effect.

[0050] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A defoaming, dispersing and stirring device, comprising a tank body (1), characterized in that: The tank body (1) is provided with a dispersing stirring mechanism and a defoaming stirring mechanism, wherein: The dispersing and stirring mechanism comprises a stirring shaft and two layers of disc-shaped blades arranged in parallel on the stirring shaft, and the two layers of disc-shaped blades are arranged on the lower half of the tank body (1); The defoaming stirring mechanism comprises a stirring shaft and a flat-blade paddle (8) and two layers of folding-blade paddles arranged in parallel on the stirring shaft, wherein the flat-blade paddle (8) is arranged on the upper half of the tank body (1), and the two layers of folding-blade paddles are arranged on the lower half of the tank body (1).

2. The defoaming, dispersing and stirring device according to claim 1, characterized in that: The stirring shafts of the dispersing stirring mechanism and the defoaming stirring mechanism are respectively connected to different motor drives.

3. The defoaming, dispersing and stirring device according to any one of claims 1 to 2, characterized in that: The disc-type blades comprise a first disc-type blade (4) and a second disc-type blade (5); the first disc-type blade (4) is arranged at a height of 1 / 4 to 1 / 3 from the bottom of the vertical tank wall of the tank body (1), and the second disc-type blade (5) is arranged at the bottom of the vertical tank wall of the tank body (1).

4. The defoaming, dispersing and stirring device according to claim 3, characterized in that: The first disc-type blade (4) comprises a plurality of equally spaced spikes (42), the plurality of spikes (42) being radially distributed, and a spiral blade (41) being provided between any two adjacent spikes (42), the length of the spike (42) being greater than the radius of the spiral blade (41).

5. The defoaming, dispersing and stirring device according to claim 4, characterized in that: The radius of the spiral blade (41) decreases gradually along its rotation direction.

6. The defoaming, dispersing and stirring device according to claim 3, characterized in that: The folding blade paddle comprises a first folding blade paddle (6) and a second folding blade paddle (7), wherein the first folding blade paddle (6) is arranged at the same height as the first disc-type paddle (4), and the second folding blade paddle (7) is arranged at the same height as the second disc-type paddle (5).

7. The defoaming, dispersing and stirring device according to claim 6, characterized in that: The first folding blade (6) and the second folding blade (7) are arranged in a staggered manner.

8. The defoaming, dispersing and stirring device according to claim 6, characterized in that: The first folding blade paddle (6) comprises a mounting shaft (61) and at least two inclined blades (62), the inner side wall of the mounting shaft (61) being fixedly mounted on the second stirring shaft (3), and the two inclined blades (62) being evenly spaced and mounted on the outer side wall of the mounting shaft (61).

9. The defoaming, dispersing and stirring device according to claim 8, characterized in that: The angle formed by the inclined blade (62) and the vertical plane is 30° to 60°.

10. The defoaming, dispersing and stirring device according to claim 7, characterized in that: The number of inclined blades (62) of the first folding blade paddle (6) is three.

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