CN114452857A - Stirring equipment with positive and negative mixed flow - Google Patents

Abstract

The invention discloses stirring equipment with a forward and reverse mixed flow, which comprises a kettle body, a driving assembly arranged on the kettle body and a stirring assembly arranged in the kettle body, wherein the driving assembly is used for driving the stirring assembly to perform a stirring action; the fixed stirrer is fixed in the kettle body; the internal portion of cauldron stirs the material through activity agitator and fixed agitator, and the blade orientation of fixed agitator and activity agitator is opposite. The invention can realize the forward and reverse mixing flow only by utilizing one driving device, thereby achieving good stirring effect and saving energy consumption.

Description

Mixing equipment with positive and negative mixed flow

technical field

The invention relates to a stirring device, in particular to a stirring device with positive and negative mixed flow.

Background technique

At present, in the production of petroleum, fine chemicals, biopharmaceuticals and other products, high-viscosity materials are gradually increasing. Many polymers and microbial polysaccharides show high viscosity, and most of the materials are non-Newtonian fluids. In the production process of many polymers, the viscosity of the material will also change, so the requirements for stirring are higher, and the stirring is required to adapt to each process of viscosity change. When the viscosity of the material gradually increases, due to the influence of the viscous force, the flow is in a state of laminar flow, and the scope of action of agitation is gradually reduced. It is difficult to cause the solution to form an integral circulating flow in the kettle. There are weak areas or dead areas in the kettle, which are very unfavorable to the mixing, dispersion, heat transfer and reaction of materials. For ordinary stirring, only increasing the stirring speed has little effect, because if the speed is too high, a channel flow will be formed inside the high-viscosity liquid, and the liquid will still not move away from the stirring paddle. Corresponding to the fermentation process of high-viscosity microorganisms, the microorganisms need to pass air, and after the gas is introduced, a "cavity" phenomenon will be formed in the tank. In order to increase the stirring range, for the working conditions of high-viscosity liquids, the ribbon type, screw type stirring paddle or universal energy stirring paddle are usually used, but there are still problems such as insufficient stirring effect and high energy consumption.

The main problem faced by the existing mixing equipment for high-viscosity material systems is how to meet the process requirements and how to improve the efficiency, that is, the mixing equipment needs to meet the process requirements under the conditions of fluid mixing and mass transfer. reach the minimum.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a stirring device with positive and negative mixed flow, which can realize the positive and negative mixed flow with one driving device, which can not only achieve a good stirring effect but also save energy. consumption.

In order to achieve the above purpose, the present invention provides the following technical solutions: a stirring device with positive and negative mixed flow, comprising a kettle body, a drive assembly arranged on the kettle body, and a stirring assembly arranged in the kettle body, and the drive assembly uses The stirring action is performed on the driving stirring component, the stirring component includes a movable agitator and a fixed agitator, the movable agitator is linked with the driving component, and is driven by the driving component to rotate and stir; the fixed agitator is fixed in the kettle body; Inside the kettle body, materials are stirred by a movable agitator and a fixed agitator, and the blades of the fixed agitator and the movable agitator are oriented in opposite directions.

As a further improvement of the present invention, the stirring assembly further includes a first stirring shaft and a second stirring shaft, the first stirring shaft is linked with the driving assembly and is fixedly connected with the movable stirrer; when the driving assembly drives the first stirring shaft During rotation, the first stirring shaft drives the movable stirrer to rotate; the second stirring shaft is fixed in the kettle body, and the fixed stirrer is mounted on the second stirring shaft.

As a further improvement of the present invention, the number of the fixed agitators and the movable agitators is several, and the plurality of the fixed agitators and the several movable agitators are staggered in the up-down direction.

As a further improvement of the present invention, one end of the second stirring shaft is fixedly connected to the bottom of the kettle body, and the other end of the movable stirrer is rotatably connected.

As a further improvement of the present invention, one end of the second stirring shaft connected to the movable agitator is assembled with the movable agitator through a bearing.

As a further improvement of the present invention, one or more movable agitators close to the drive assembly are fixedly connected to the first agitating shaft; the remaining movable agitators are rotatably connected to the second agitating shaft.

As a further improvement of the present invention, several fixed stirrers and several movable stirrers arranged staggered in the up-down direction are installed on the second stirring shaft.

As a further improvement of the present invention, the movable agitator rotatably connected to the second stirring shaft is mounted on the second stirring shaft through a bearing.

Beneficial effects of the present invention:

1. It has the effect of efficient stirring and mixing and energy saving, and also helps to reduce costs;

2. Under the condition of the same motor power, it can have better stirring effect;

3. Under the same stirring effect, a smaller motor power can be used to achieve energy saving effect.

Description of drawings

1 is a schematic cross-sectional view of the overall structure of the present invention;

Fig. 2 is the structural schematic diagram of the stirring assembly of the present invention;

3 is a schematic diagram of the connection structure of the first stirring shaft and the movable stirrer of the present invention;

FIG. 4 is a schematic diagram of another connection structure of the first stirring shaft and the movable stirrer according to the present invention.

Reference numerals: 1, kettle body; 2, drive assembly; 3, stirring assembly; 31, movable stirrer; 32, fixed stirrer; 33, first stirring shaft; 34, second stirring shaft.

Detailed ways

The present invention will be further described in detail below with reference to the embodiments given in the accompanying drawings.

Referring to Figure 1-4,

A stirring device with positive and negative mixed flow, comprising a kettle body 1, a driving component 2 arranged on the kettle body 1, and a stirring component 3 arranged in the kettle body 1, and the driving component 2 is used to drive the stirring component 3 to perform a stirring action , is characterized in that, the stirring assembly 3 includes a movable agitator 31 and a fixed agitator 32, the movable agitator 31 is linked with the driving assembly 2, and is driven by the driving assembly 2 to rotate and stir; the fixed agitator 32 is fixed in the kettle body 1; Inside the kettle body 1, the materials are stirred by the movable agitator 31 and the fixed agitator 32, and the blades of the fixed agitator 32 and the movable agitator 31 are in opposite directions.

The drive assembly 2 is formed by a motor and its surrounding mounting components. The motor is mounted on the kettle body 1 through the mounting components, and is linked with the movable agitator 31. Specifically, power can be transmitted through the cooperation of the rotating shaft and the coupling.

In the above scheme, when the drive assembly 2 is working, the movable agitator 31 is driven to rotate to perform a stirring action, and the fixed agitator 32 is matched with the fixed agitator. The mixing effect can be achieved through one drive component 2 (ie, the motor), which can realize the positive and negative mixing and stirring, which has the effect of high-efficiency stirring and mixing and energy saving, and also helps to reduce costs. From this, it can also be known that under the condition of the same motor power, a better stirring effect can be obtained, and under the same stirring effect, a smaller motor power can be used to achieve an energy saving effect.

Further, the stirring assembly 3 also includes a first stirring shaft 33 and a second stirring shaft 34. The first stirring shaft 33 is linked with the driving assembly 2 and is fixedly connected with the movable stirrer 31; when the driving assembly 2 drives the first stirring shaft When the 33 rotates, the first stirring shaft 33 drives the movable stirrer 31 to rotate;

The stirring assembly 3 also further divides the stirring shaft into a first stirring shaft 33 linked with the driving assembly 2 and a second fixed stirring shaft 34, and the fixed stirrer 32 is fixedly installed on the second stirring shaft 34, which can achieve a fixed effect , and form positive and negative mixed flow stirring with the first stirring shaft 33 . This fixing method has a simple structure and is convenient for installation. Referring to the drawings, it is preferable that there is a gap between the first stirring shaft 33 and the second stirring shaft 34, and the two are separated.

During the stirring process, the kettle body 1 is fixed, and the second stirring shaft 34 is fixed in the kettle body 1 and can be in a fixed state with the kettle body 1 at the same time. The first stirring shaft 33 and the second stirring shaft 34 are distributed up and down, and the The first stirring shaft 33 and the second stirring shaft 34 are preferably arranged coaxially.

In a further arrangement, the number of the fixed agitators 32 and the number of the movable agitators 31 is several, and the several fixed agitators 32 and the several movable agitators 31 are staggered in the up-down direction.

Referring to the figure, there are multiple movable agitators 31 and fixed agitators 32, which are arranged in a staggered manner in cooperation with each other, so as to have the best positive and negative mixed flow stirring effect, and make the stirring effect more uniform.

Preferably, one end of the second stirring shaft 34 is fixedly connected to the bottom of the kettle body 1 , and the other end of the movable stirrer 31 is rotatably connected.

The second stirring shaft 34 is used as a fixed shaft, and one end of the second stirring shaft 34 is also rotatably connected to the movable agitator 31, which means that the two ends of the second stirring shaft 34 are stabilized by the kettle body 1 and the movable agitator 31 respectively, which can avoid the stirring During the process, the problem of excessive swing of the second stirring shaft 34 occurs, which makes the stirring action more stable.

In fact, the first stirring shaft 33 and the second stirring shaft 34 are preferably arranged in a vertical direction, and the positions of the first stirring shaft 33 and the second stirring shaft 34 can be changed according to the position of the driving assembly 2, such as driving If the assembly 2 is located at the bottom, the first stirring shaft 33 is also placed downward. If the driving assembly 2 is located above, the first stirring shaft 33 is also located above.

Wherein, the end of the second stirring shaft 34 connected with the movable agitator 31 is preferably assembled with the movable agitator 31 through a bearing.

Since the movable agitator 31 and the second agitating shaft 34 are movably connected, the cooperation by means of bearings can make the rotation of the movable agitator 31 smoother, and at the same time can provide sufficient stability to the second agitating shaft 34 .

It should also be noted that, as shown in FIGS. 3 and 4 , one or more movable agitators 31 close to the drive assembly 2 are fixedly connected to the first agitator shaft 33 ; the remaining movable agitators 31 and the second agitator shaft 34 are rotatable Connection.

Generally speaking, several movable agitators 31 close to the drive assembly 2 may be fixedly connected to the first agitator shaft 33, which can improve the strength under the driving action. A plurality of movable agitators 31 are forced together to withstand a larger torque.

The above-mentioned staggered arrangement between the fixed agitator 32 and the movable agitator 31 will be described in more detail below.

Several fixed stirrers 32 and several movable stirrers 31 arranged staggered in the up-down direction are mounted on the second stirring shaft 34 .

Since the properties of the first stirring shaft 33 and the second stirring shaft 34 are different, the staggered arrangement may be arranged on the second stirring shaft 34, which is more convenient for installation.

The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (8)

1. a stirring device with positive and negative mixed flow, comprising a still body, a drive assembly arranged on the still body, and a stirring assembly arranged in the still body, the drive assembly is used to drive the stirring assembly to perform a stirring action, and it is characterized in that , the stirring assembly includes a movable agitator and a fixed agitator, the movable agitator is linked with the driving assembly, and is driven by the driving assembly to rotate and stir; the fixed agitator is fixed in the kettle body; The material is stirred by the agitator and the stationary agitator, and the blades of the stationary agitator and the movable agitator are facing opposite. 2 . The stirring device according to claim 1 , wherein the stirring assembly further comprises a first stirring shaft and a second stirring shaft, and the first stirring shaft is linked with the driving assembly and is fixedly connected with the movable stirrer. 3 . When the drive assembly drives the first stirring shaft to rotate, the first stirring shaft drives the movable stirrer to rotate; the second stirring shaft is fixed in the kettle body, and the fixed stirrer is installed on the second stirring shaft. 3. The stirring device according to claim 2, wherein the number of the fixed agitator and the movable agitator is several, and the number of the fixed agitator and the several movable agitators are in the up-down direction Staggered arrangement. 4 . The stirring device according to claim 2 , wherein one end of the second stirring shaft is fixedly connected to the kettle body, and the other end of the movable stirrer is rotatably connected. 5 . 5 . The stirring device according to claim 4 , wherein one end of the second stirring shaft connected to the movable agitator is assembled with the movable agitator through a bearing. 6 . 6. The stirring device according to claim 3, characterized in that, one or more movable agitators close to the drive assembly are fixedly connected with the first stirring shaft; the remaining movable agitators are rotatable with the second stirring shaft connect. 7 . The stirring device according to claim 6 , wherein a plurality of the fixed agitators and a plurality of movable agitators arranged staggered in the up-down direction are mounted on the second stirring shaft. 8 . 8. The stirring device according to claim 6 or 7, wherein the movable agitator rotatably connected to the second stirring shaft is mounted on the second stirring shaft through a bearing.

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