CN111729543A - a planetary mixer - Google Patents

Abstract

The invention relates to a planetary mixer, comprising: a fixed frame, a rotatable vertical shaft is arranged in the middle of the fixed frame along a vertical direction; and a rotating assembly, the rotating assembly includes a rotating part and a stirrer, and the rotating part is fixed on one side of the vertical shaft and is connected with the vertical shaft. The agitator is fixed on the rotating part, and its rotation pushes the rotating part and the vertical shaft to revolve synchronously. The invention discloses and provides a planetary agitator. The agitator is fixed on the rotating part, and its rotation pushes the rotating part and the vertical shaft to revolve synchronously; the position and the pushing direction of the agitator are continuously changed during the rotation, which makes the stirring effect more effective. Uniform; the revolution power thus obtained comes from the push-flow reaction force of the agitator, without the need for additional motors and complex planetary gear trains or deceleration mechanisms, which simplifies the structure, reduces manufacturing and operation and maintenance costs, power consumption and failures risk rate.

Description

a planetary mixer

technical field

The invention relates to the technical field of stirring devices, and more particularly to a planetary mixer.

Background technique

Agitators are machines that make different kinds of liquid or gaseous media form forced convection to achieve uniform mixing, and are sometimes used to uniformly disperse particles or flocculent solids into liquid or gaseous media. There are many types of existing mixers, which are divided into propeller type, turbine type, anchor type, frame type, ribbon type, screw type, etc. according to the viscosity of the working medium and various mixing requirements. The basic principle is to act on the surrounding fluid through the mechanical motion of the stirring moving parts, such as the stirring blade, to transfer the mechanical energy to the fluid, and to increase the speed of the fluid to enhance the mass transfer process. Taking low-viscosity stirring as an example, the fluid velocity in the stirring region is usually greater than a certain value as the criterion for achieving the expected stirring effect in this region. The flow velocity near the blade is high, and the flow velocity of the fluid farther from the blade is lower. Obviously, when the position of the blade is fixed, the size of its effective influence area is limited. In order to make the large-scale stirring tank agitate evenly as a whole, two methods can be used: one is to increase the diameter of the blade or increase the rotation speed to increase the blade. The power increases the effective stirring area of a single stirrer, which will make the flow rate in the core area too high and consume too much energy, and in some cases will destroy the biochemical process in the fluid; the second is to arrange multiple stirrers, which will Significant increase in construction and operation and maintenance costs. In order to solve the above problems, a new type of agitator structure has emerged, the planetary agitator. Its structural feature is that the axis of the moving part that plays the role of stirring is not fixed, but moves in a circle around a certain axis of rotation, namely: At the same time that the stirring parts rotate, their rotation axis revolves around a certain axis of rotation, so it is called a planetary agitator.

Chinese patent CN202010123662.3 discloses "a textile slurry stirring device for textiles", Chinese patent CN202010167951.3 discloses "a pair of roller planetary mixer", Chinese patent CN111068551A discloses "a self-adjusting electronic planetary stirring device" "A planetary agitator" disclosed in Chinese patent CN201921081285.0, etc., the drive structures of these solutions all contain planetary gear pairs; Chinese patent CN202010176421.5 discloses "a kind of high-efficiency unequal-distance mixer" The drive structure involves Reducer and multiple stirring rotors, the main shaft bears a large torque due to the transmission of stirring power, and needs to consume more materials. The common disadvantages of the structural solutions represented by these patent disclosures are that the structure is complex and requires more precise processing, thus increasing the cost of manufacturing and operation and maintenance, and the gear reduction link will reduce the mechanical efficiency.

Therefore, how to provide a planetary mixer with a simple structure, low cost and good stirring effect is an urgent problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

Therefore, the purpose of the present invention is to propose a planetary agitator, which solves the problems in the prior art that the planetary agitator has a complex structure, high manufacturing and operation and maintenance costs, and the gear deceleration link will reduce the mechanical efficiency.

The invention provides a planetary mixer, comprising:

A fixed frame, a rotatable vertical shaft is arranged in the middle of the fixed frame along the vertical direction;

And a rotating assembly, the rotating assembly includes a rotating part and a stirrer, the rotating part is fixed on one side of the vertical shaft and is integral with it, the agitator is fixed on the rotating part, and its rotation pushes the rotating part and the vertical shaft to revolve synchronously.

It can be seen from the above technical solutions that, compared with the prior art, the present invention provides a planetary mixer, the mixer is fixed on the rotating part, and its rotation pushes the rotating part and the vertical shaft to revolve synchronously; The position and the push flow direction are continuously changed, which makes the stirring effect more uniform; the revolution power obtained from this comes from the push flow reaction force of the agitator, which does not require the help of another motor and complex planetary gear train or reduction mechanism, which simplifies the structure, reducing manufacturing and operation and maintenance costs, power consumption and failure risk rate.

Further, the rotating part includes a frame and a wing plate, one end of the frame is fixed on one side of the vertical shaft, and the other end of the frame is connected with a wing plate; the agitator is fixed on the frame. The wing plate and the frame together act as a hindrance to the rotation of the vertical shaft. Adjusting its size and shape changes the size of the resistance, which can indirectly control the rotation speed; at the same time, the wing plate and the frame also play a large-scale rotary stirring effect.

Further, the fixing frame includes two sets of fixing plates, and both ends of the vertical shaft are respectively connected to the two sets of fixing plates through bearings.

Further, the mixer is a submersible mixer, and the cable of the submersible mixer is connected to an external power supply.

Further, a conductive slip ring is provided at the vertical shaft corresponding to the first group of fixing plates, and the inner ring of the conductive slip ring is fixed on the vertical shaft, which is electrically connected with the submersible mixer through the submersible mixer cable; The first group of fixing plates is fixed and connected to an external power source through the submersible mixer cable, forming a power supply circuit from the power source to the submersible mixer. Therefore, the inner and outer rings of the conductive slip ring can be rotated relatively without affecting the continuity of the circuit, and the problem of cable winding caused by rotation is avoided.

Further, there are a plurality of rotating parts, which are arranged with the vertical shaft as the rotation center; thus, the stirring effect is enhanced.

Further, a plurality of agitators can be provided according to the needs of use, and they can be provided in different positions or different directions of the rotating part.

Further, the vertical shaft is a hollow structure, the top of which is connected with a rotary joint, and a small amount of liquid or gas to be added is input into the cavity in the vertical shaft through the rotary joint. place.

Since the injection position of the working medium of the existing mixer is fixed, if a small amount of liquid or gas is mixed with a large amount of liquid medium, a large-scale mixing movement with a long time and large power is required to achieve Even dispersion effect. Therefore, in this scheme, the mixed liquid or gas to be added is input into the cavity in the vertical shaft, and reaches the vicinity of the agitator through the cavity and the pharmaceutical conduit, and this part of the medium is directly broken and dispersed by the impeller, which can greatly improve the mass transfer efficiency;

Among them, the rotary joint is a standard part, which is composed of an inner tube and an outer casing that can rotate with each other, and is used for conveying liquid or gas under the condition of the rotary motion of the pipeline.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

Fig. 1 accompanying drawing is the structural representation of a kind of planetary mixer embodiment provided by the present invention;

2 is a schematic structural diagram of another embodiment of a planetary mixer provided by the present invention;

In the picture: 1-Fixed plate, 2-Bearing, 3-Vertical shaft, 4-Frame, 5-Wing plate, 6-Submersible mixer cable, 7-Conductive slip ring, 8-Agitator, 9-Rotary joint, 10 - Pharmacy catheter.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed and operate in a particular orientation and are therefore not to be construed as limitations of the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In an embodiment of the present invention, an embodiment in which two agitators are axially symmetrically arranged, see FIG. 1 , is provided, including:

A fixed frame, a rotatable vertical shaft 3 is arranged in the middle of the fixed frame along the vertical direction;

And two sets of rotating components arranged symmetrically with each other, each set of rotating components includes a rotating part and agitator 8, the rotating part is fixed on one side of the vertical shaft 3 and is integrated with it, and the agitator 8 is fixed on the rotating part, and its rotation is at the same time. Push the rotating part and the vertical shaft 3 to revolve synchronously.

In another embodiment of the present invention, a fixing frame is included, and a rotatable vertical shaft 3 is arranged in the middle of the fixing frame along the vertical direction;

And a plurality of groups of rotating components arranged with the vertical shaft 3 as the center, each group of rotating components includes a rotating part and a stirrer 8, the rotating part is fixed on one side of the vertical shaft 3 and is integrated with it, and the agitator 8 is fixed on the rotating part, and Its rotation simultaneously pushes the rotating part and the vertical shaft 3 to revolve synchronously.

In other embodiments of the present invention, a fixing frame is included, and a rotatable vertical shaft 3 is arranged in the middle of the fixing frame along the vertical direction;

And a set of rotating components, the rotating components all include a rotating part and a stirrer 8, the rotating part is fixed on one side of the vertical shaft 3 and is integrated with it, the agitator 8 is fixed on the rotating part, and its rotation pushes the rotating part and the vertical shaft 3 synchronously Revolution.

In the above embodiment, the rotating part includes the frame 4 and the wing plate 5 . One end of the frame 4 is fixed on one side of the vertical shaft 3 , and the other end is connected with the wing plate 5 ; the stirrer 8 is fixed on the frame 4 . The wing plate and the frame together act as a hindrance to the rotation of the vertical shaft. Adjusting its size and shape changes the size of the resistance, which can indirectly control the rotation speed; at the same time, the wing plate and the frame also play a large-scale rotary stirring effect.

In the embodiment of the present invention, the fixing frame includes two sets of fixing plates 1 , and both ends of the vertical shaft 3 are respectively connected to the two sets of fixing plates 1 through bearings 2 .

In the embodiment of the present invention, the mixer 8 is a submersible mixer, and the cable 6 of the submersible mixer is connected to an external power supply.

Advantageously, the vertical shaft 3 is provided with a conductive slip ring 7 corresponding to the first set of fixing plates, and the inner ring of the conductive slip ring 7 is fixed on the vertical shaft 3, which is electrically connected to the submersible mixer through the submersible mixer cable 6; The outer ring of the slip ring 7 is fixed with the first set of fixing plates, and is connected to an external power source through the submersible mixer cable 6 to form a power supply loop from the power source to the submersible mixer. Therefore, the inner and outer rings of the conductive slip ring can be rotated relatively without affecting the continuity of the circuit, and the problem of cable winding caused by rotation is avoided.

In the above-mentioned embodiments, a plurality of agitators can be provided according to the needs of use, and they can be provided in different positions or different directions of the rotating part; thus, the convection of the fluid in different spatial positions or directions is enhanced.

In the above-mentioned embodiments, the direction of the flow pushing of the agitator may also form a certain angle with the vertical axis 3 and is not limited to being vertical or parallel.

When the present invention works, the submersible agitator rotates, forming a local stirring effect and at the same time generating axial push flow. Under the reaction force of the push flow, the vertical shaft 3, the frame 4, the wing plate 5 and the agitator 8 rotate, and the liquid formed by the submersible agitator The high-speed motion area rotates around the axis, and its position and push flow direction are continuously updated, forming a wider effective mixing area, thus enhancing the mixing effect and achieving the purpose of saving energy under the same mixing effect.

The present invention continuously changes the position and direction of the effective stirring region through the rotation of the submersible agitator 8 and the revolution around the vertical axis, and solves the problem that the effective stirring region of the fixed position agitator is small without increasing the number of agitators. Compared with increasing the number of agitators, the significant advantages of the present invention are: first, the number of equipment is reduced, and construction and operation and maintenance costs are effectively reduced; second, the position of the agitator and the direction of the flow are continuously changed, and the stirring effect is more uniform; 3. The power of the revolution comes from the push flow reaction force of the submersible agitator, without the help of another motor and complex planetary gear train or deceleration mechanism, which reduces the cost, power consumption and failure risk; 4. The vertical shaft is only a support shaft and does not Power needs to be transmitted, so the requirements for mechanical strength are reduced and manufacturing costs are saved.

In the above embodiments, the vertical shaft 3 is a solid shaft.

Since the injection position of the working medium of the existing mixer is fixed, if a small amount of liquid or gas is mixed with a large amount of liquid medium, a large-scale mixing movement with a long time and large power is required to achieve Even dispersion effect.

Referring to FIG. 2 , in other embodiments of the present invention, the vertical shaft 3 is a hollow structure, and a rotary joint 9 is connected to the top thereof, and a small amount of liquid or gas to be added is input into the cavity in the vertical shaft 3 through the rotary joint 9 . Corresponding to the position of the agitator 8 , a drug conduit 10 is connected, and the outlet of the drug conduit 10 is connected to the agitator 8 .

Therefore, in this scheme, the mixed liquid or gas to be added is input into the cavity in the vertical shaft, and reaches the vicinity of the agitator through the cavity and the pharmaceutical conduit. This part of the medium is directly broken and dispersed by the impeller, which can greatly improve the mass transfer efficiency.

Among them, the rotary joint is a standard part, which is composed of an inner tube and an outer casing that can rotate with each other, and is used for conveying liquid or gas under the condition of the rotary motion of the pipeline.

When the agitator in this embodiment is working, a small amount of liquid or gas enters the stirring tank through the rotary joint, hollow vertical shaft, and pharmaceutical conduit, and the impeller of the submersible agitator rotates at a high speed, directly sucking a small amount of liquid or gas into the impeller And evenly crushed and dispersed into the liquid medium, forming a local stirring effect and at the same time generating axial push flow; through the submersible agitator's rotation and revolution around the hollow vertical axis, the position of the effective stirring area and the direction of the push flow are continuously changed. The solution of injecting a small amount of liquid or gas nearby, so that it is directly sucked into the impeller and then broken and dispersed, and the rotary joint is used to solve the continuous injection of a small amount of medium in motion. On the premise of not increasing the number of agitators, the problem of small effective mixing area of the fixed-position agitator is solved.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (8)

1. A planetary mixer, comprising:

the middle part of the fixed frame is provided with a rotatable vertical shaft (3) along the vertical direction;

and the rotating assembly comprises a rotating part and a stirrer (8), the rotating part is fixed on one side of the vertical shaft (3) and is integrated with the vertical shaft, the stirrer (8) is fixed on the rotating part, and the rotating part and the vertical shaft (3) are synchronously revolved under the action of autorotation of the stirrer.

2. Planetary mixer according to claim 1, characterized in that said rotating part comprises a frame (4) and wings (5), said frame (4) being fixed at one end to said vertical shaft (3) and at the other end to which said wings (5) are connected; the stirrer (8) is fixed on the frame (4).

3. Planetary mixer according to claim 2, characterized in that said fixed frame comprises two fixed plates (1), and said vertical shaft (3) is connected to said two fixed plates (1) at its two ends by means of bearings (2).

4. Planetary mixer according to claim 3, characterized in that the mixer (8) is a submersible mixer, the submersible mixer cable (6) being connected to an external power source.

5. Planetary mixer according to claim 4, characterized in that the vertical shaft (3) is provided with a slip ring (7) corresponding to the first set of fastening plates, the inner ring of the slip ring (7) is fastened to the vertical shaft (3) and is electrically connected to the submersible mixer via the submersible mixer cable (6); the outer ring of the conductive slip ring (7) is fixed with the first group of fixing plates and is connected with an external power supply through the submersible stirrer cable (6) to form a power supply loop from the power supply to the submersible stirrer.

6. Planetary mixer according to any of claims 1 to 5, characterised in that said rotating parts are in plurality, arranged with said vertical shaft (3) as the centre of rotation.

7. The planetary mixer according to claim 6, wherein the mixers are provided in plurality according to the use requirement, and can be provided at different positions or in different directions of the rotating part.

8. Planetary mixer according to claim 1, characterized in that said vertical shaft (3) is a hollow structure, and the top of said shaft is connected with a rotary joint (9), and a small amount of liquid or gas to be added is introduced into the cavity of said shaft (3) through said rotary joint (9), said cavity is communicated with a chemical conduit (10) corresponding to the position of said mixer (8), and the outlet of said chemical conduit (10) is connected to said mixer (8).

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