CN114682149A - Stirring device and stirring paddle thereof - Google Patents

Abstract

The application discloses a stirring device and a stirring paddle thereof, wherein the stirring paddle comprises a dispersion plate and is constructed to be provided with a central part and a plurality of paddle block parts arranged on the periphery of the central part; the stirring rake still includes: the dispersing columns are respectively arranged on the paddle block parts; the flow guide cone is arranged at the top of the central part and is provided with a first flow guide surface; wherein the central portion is configured to be centrosymmetric with respect to a central axis; the paddle parts are constructed to have a positive flow guide surface and a negative flow guide surface, and a flow guide channel which obliquely extends in the axial direction and is open in the radial direction is formed between the positive flow guide surface of one paddle part and the negative flow guide surface of the other paddle part so as to guide at least part of slurry to the bottom of the dispersion plate when the dispersion plate rotates. The stirring device and the stirring paddle have the beneficial effects that the stirring kneading effect on the slurry is effectively improved, so that the quality of the slurry is changed.

Description

Stirring device and stirring paddle thereof

Technical Field

The application relates to the field of stirring devices, in particular to a stirring device and a stirring paddle thereof.

Background

In the fields of new energy batteries, foods, medicines, chemical industry and the like, a large amount of powder particles and liquid are required to be mixed to prepare slurry, and the preparation of the slurry with medium-low solid content and medium-low viscosity is usually realized by adopting a stirring paddle.

The existing stirring paddle has the defects that a dispersion disc cannot effectively enable slurry to be filled between paddle blocks to generate a large amount of bubbles, and the stirring quality of the slurry can be reduced if no bubble removing measures such as vacuumizing are adopted.

Disclosure of Invention

This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

Some embodiments of the present application propose a stirring device and a stirring paddle thereof to solve the technical problems mentioned in the background section above.

As a first aspect of the present application, some embodiments of the present application provide a paddle comprising: a dispersion tray configured to have a central portion and a plurality of paddle block portions disposed at a periphery of the central portion; the stirring rake still includes: the dispersing columns are respectively arranged on the paddle block parts; the flow guide cone is arranged at the top of the central part and is provided with a first flow guide surface; wherein the central portion is configured to be centrosymmetric with respect to a central axis; the paddle part is constructed to be provided with a positive diversion surface and a negative diversion surface, and the positive diversion surface and the negative diversion surface are arranged on two opposite sides of the paddle part and are obliquely intersected with the central axis; a guide channel which obliquely extends in the axial direction and is open in the radial direction is formed between the positive guide surface of one paddle block part and the negative guide surface of the other paddle block part so as to guide at least part of slurry to the bottom of the dispersion disc when the dispersion disc rotates; the flow guide surface is at least partially formed as a part of a conical surface.

Further, the positive diversion surface is obliquely intersected with the radial direction of the central axis.

Further, the positive flow guiding surface is constructed into a streamline curved surface.

Further, the counter flow guide surface obliquely intersects with the radial direction of the central axis.

Further, the flow reversing surface is configured as a streamline curved surface.

Furthermore, the projection area of the front diversion surface on the projection plane vertical to the central axis is smaller than or equal to the projection area of the reverse diversion surface on the projection plane vertical to the central axis.

Further, the top of the paddle block part is constructed into an arc-shaped surface; the tops of the paddle block portions are configured to be on an arcuate surface.

Further, the dispersion column includes: the column top is arranged above the paddle block part; the column bottom is arranged below the paddle block part; wherein the dispersion column has at least a cylindrical surface arranged in parallel with the central axis.

As a second aspect of the present application, some embodiments of the present application provide a stirring device comprising: a stirring tank body which forms a stirring space; the stirring device further comprises: the stirring paddle according to any one of the above aspects, wherein the stirring paddle is disposed at the bottom of the stirring space of the stirring tank body.

Further, the stirring device further comprises: and the spoiler is used for stopping the circumferential flow of the slurry driven by the stirring paddle at the inner wall of the stirring tank body.

The application has the advantages that: the stirring device and the stirring paddle thereof are provided, which can effectively improve the stirring and kneading effect of the slurry so as to change the quality of the slurry.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it.

Further, throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic and that elements and elements are not necessarily drawn to scale.

In the drawings:

FIG. 1 is a schematic overall view of a stirring device according to an embodiment of the present application;

FIG. 2 is a schematic view of the internal structure of the stirring apparatus shown in FIG. 1;

FIG. 3 is a schematic sectional view showing the feed portion of the stirring apparatus shown in FIG. 1;

FIG. 4 is a schematic view of a partial structure of a feeding portion in the stirring device shown in FIG. 1;

FIG. 5 is a schematic view of the structure of a feed paddle member in the mixing apparatus shown in FIG. 1;

FIG. 6 is a schematic view of the configuration of the wetting paddle in the stirring device of FIG. 1;

FIG. 7 is a schematic view of the mixing apparatus of FIG. 1 after the combination of the flange tube, the wetted column member, and the wetted ring member;

FIG. 8 is a schematic view of a combined flanged pipe and its internal structure in the mixing apparatus shown in FIG. 1;

FIG. 9 is a schematic structural view of a synchronously rotating member such as a dispersion board in the stirring apparatus shown in FIG. 1;

FIG. 10 is a schematic structural view of an assembly of a dispersion disk, a dispersion column and a guide cone in the stirring device shown in FIG. 1;

fig. 11 is a schematic top view of a dispersion plate in the stirring device shown in fig. 1;

FIG. 12 is a schematic structural view of the mixing device shown in FIG. 1, in which the whole of the dispersion disk, the dispersion column and the guide cone is cut;

fig. 13 is a schematic view showing the flow direction of the slurry inside the agitation tank in the agitation apparatus shown in fig. 1.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the disclosure are shown in the drawings, it is to be understood that the disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.

It should be noted that, for the convenience of description, only the parts relevant to the present application are shown in the drawings. The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present application will be understood in specific cases to those of ordinary skill in the art

It is noted that references to "a", "an", and "the" modifications in this application are intended to be illustrative rather than limiting, and that those skilled in the art will recognize that reference to "one or more" unless the context clearly dictates otherwise.

The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 3, the stirring apparatus 100 suitable for high solid content slurry of the present application includes a stirring tank 101, a feeding pipe 102, a stirring paddle 113, a stirring spindle 103, and a stirring motor (not shown in the drawings).

Specifically, the agitation tank 101 is configured to have an agitation space 101a, and the feed pipe member 102 is formed with a powder inlet 102a, a liquid inlet 102b, and a feed passage 102c communicating with the agitation space 101a, and the powder and the liquid are fed into the agitation space 101a through the feed passage 102 c.

Specifically, the stirring paddle 113 is rotatably disposed in the stirring space 101a, and stirs a mixture of powder and liquid in the stirring space 101a to mix the powder and liquid uniformly, the stirring spindle 103 at least partially extends into the stirring space 101a and forms a rotation stop connection with the stirring paddle 113, the stirring spindle 103 rotates around a central axis under the driving of the stirring motor (direct driving or indirect driving), and further drives the stirring paddle 113 to rotate to stir the mixture of powder and liquid in the stirring space 101a at a high speed, the slurry formed after uniform mixing is output from the discharge port 1011d, and the discharge port 1011d is in a closed state during stirring.

The powder introduced into the feed passage 102c in actual production is liable to be agglomerated, which affects the passability through the feed passage 102c and, if it is directly introduced into the stirring space 101a, the dispersion efficiency.

As a preferable scheme, as shown in fig. 1 to 4, the stirring apparatus 100 for high solid content slurry of the present application further includes: a feeding paddle 104, a feeding main shaft 105, a feeding motor 106 and a speed reducer 114; the feeding main shaft 105 at least partially extends into the feeding channel 102c, the feeding motor 106 and the speed reducer 114 are matched to drive the feeding main shaft 105 to rotate in the feeding channel 102c, the feeding paddle 104 is rotatably arranged in the feeding channel 102c, and the feeding paddle 104 is mounted to the feeding main shaft 105 to rotate along with the feeding main shaft 105, so that the feeding paddle 104 at least stirs the powder entering the feeding channel 102c through the powder inlet 102a to scatter the powder.

Preferably, as shown in fig. 2 and 4, the feeding pipe member 102 is formed with a plurality of powder inlets 102a, the powder inlets 102a are located at different circumferential positions for simultaneously feeding the same powder or different kinds of powder, and the feeding paddle member 104 is capable of scattering and uniformly mixing the fed powder.

Specifically, as shown in fig. 5, the feeding paddle 104 includes a sleeving portion 1041, a spiral portion 1042 and a connecting portion 1043; the sleeving part 1041 is sleeved on the feeding main shaft 105 and is in spline connection with the feeding main shaft 105 to be matched with the feeding main shaft 105 in a rotation stopping way, a step part 1051 is formed on the feeding main shaft 105, and the installation position of the sleeving part 1041 on the feeding main shaft 105 is limited; the spiral portion 1042 is configured to extend along a spiral line, a plurality of connecting portions 1043 are used to connect the spiral portion 1042 to the sleeving portion 1041 in a manner of spirally surrounding the sleeving portion 1041, and the connecting portions 1043 cut the powder in the feeding channel 102c when rotating, so as to mix the powder uniformly. More specifically, the combination of the spiral portions 1042 and the connecting portions 1043 is uniformly provided with a plurality of groups around the central axis, which improves the slitting efficiency. The spiral part 1042 and the connecting part 1043 are both designed in a streamline structure, so that the appearance is smooth, the resistance to powder is small, the rapid and uniform mixing of the powder in a small space can be realized, and the powder is not easy to accumulate in the feeding channel 102 c.

In the field of preparation of high-solid-content and high-viscosity slurry, powder materials show a trend of smaller and smaller particle sizes, the specific surface area is large, a large amount of gas is adsorbed on the surface of the powder materials, so that the powder materials are difficult to infiltrate into liquid materials, the uniform mixing and dispersion are difficult to achieve, the problems of layering, agglomeration and precipitation and the like are easy to occur, and if the powder materials are directly input into the stirring space 101a, the mixing effect is poor and the time is long.

As a preferable scheme, as shown in fig. 2 to 8, the stirring device 100 for high solid content slurry of the present application further includes: a plurality of immersion tubes 107, a plurality of immersion paddles 108, and a plurality of immersion columns 109.

As shown in fig. 6 and 7, the immersion pipe member 107 is formed with an immersion passage 107a communicating with the feed passage 102c, and the immersion passage 107a is located between the feed passage 102c and the agitation space 101 a.

As shown in fig. 1, the liquid inlet 102b is located at a different axial position from the powder inlet 102a, and the liquid inlet 102b is located at a position of the feed channel 102c close to the wetting channel 107a, so that the liquid fed from the liquid inlet 102b rapidly enters the wetting channel 107 a.

As shown in fig. 6, the wetting paddles 108 are rotatably disposed in the wetting channel 107a around the central axis, and the wetting paddles 108 are disposed at different axial positions for stirring the mixture of the powder and the liquid in the wetting channel 107a during rotation. The axial, radial and circumferential directions of the present application are relative positions with reference to the central axis.

The plurality of wetting columns 109 are arranged between the two wetting paddles 108, and the wetting columns 109 are configured as cylinders extending in a radial direction of the central axis, such that the mixture of powder and liquid flowing along the wetting channel 107a is split at the wetting columns 109, in particular, the plurality of wetting paddles 108 arranged between the two wetting paddles 108 are arranged at different circumferential positions, and the wetting columns 109 are arranged between the feed spindle 105 and the wetting tube 107.

By adopting the scheme, the mixture of the powder and the liquid is divided by the plurality of the soaking columns 109 under the stirring of the soaking paddles 108, so that the mixture is fully turned to fully mix the liquid with the powder, and most of soaking can be completed through continuous stirring of the plurality of groups of the soaking paddles 108 and the soaking columns 109, and the soaking efficiency is high.

More specifically, the gap between the wetting paddle 108 and the wetting column 109 is 3mm to 5mm, so that the mixture of the powder and the liquid is pressed between the wetting paddle 108 and the wetting column 109, and the wetting process is accelerated.

More specifically, the wetting paddle 108 comprises a connecting shaft portion 1081 and a paddle portion 1082, wherein the connecting shaft portion 1081 is sleeved on the feeding main shaft 105 and is connected with the feeding main shaft 105 through a key so as to be matched with the feeding main shaft 105 in a rotation stopping manner; the feeding main shaft 105 is sleeved with a plurality of wetting paddles 108 in sequence, a connecting shaft portion 1081 of one wetting paddle 108 close to the sleeving portion 1041 is abutted to the sleeving portion 1041, and the end portion of the feeding main shaft 105 is connected with the end cover 111 to completely fix the relative position of the sleeving portion 1041 and the main shaft. The infiltration paddle piece 108 and the feeding paddle piece 104 are connected to the same feeding main shaft 105, so that the infiltration paddle piece and the feeding paddle piece rotate together, the speed of powder input into the infiltration channel 107a is approximately equal to the speed of mixture output into the stirring space 101a, accumulation of powder in the infiltration channel 107a caused by too fast input of the powder and accumulation of liquid or negative pressure space at the junction of the infiltration channel 107a and the feeding channel 102c caused by too fast output of the mixture are avoided, and metering control is facilitated.

A plurality of paddle parts 1082 of the wetting paddle 108 are arranged at the circumferential position of the connecting shaft part 1081 and are symmetrically arranged relative to the central axis; the paddle portion 1082 is provided with a paddle surface that is obliquely intersected with the central axis, and thus the paddle portion 1082 applies forces in the axial direction and the centrifugal direction of the central axis to the mixture of the powder material and the liquid material in the wetting channel 107a simultaneously when the wetting paddle member 108 rotates. The axial force pushes a portion of the mixture of powder and liquid to the wetting column 109, and the centrifugal force pushes another portion of the mixture to the inner wall of the wetting tube 107.

More specifically, the gap between the paddle portion 1082 and the inner wall of the infiltration pipe 107 is 3mm to 5mm, so that the mixture of the powder and the liquid is pushed toward the inner wall of the infiltration pipe 107 by the centrifugal force and is squeezed between the paddle portion 1082 and the infiltration pipe 107, thereby further accelerating the infiltration process.

More preferably, as shown in fig. 6, the paddle surface of the paddle portion 1082 is configured to have at least one curved surface, so as to reduce the resistance when the paddle surface contacts with the mixture, so that the mixture smoothly flows through the paddle surface, and the mixing of the mixture is accelerated. Specifically, the paddle face of the paddle portion 1082 is divided into a forward-paddle face 1082a and a reverse-paddle face 1082b, the forward-paddle face 1082a and the reverse-paddle face 1082b are respectively provided on opposite sides of the paddle portion 1082, the forward-paddle face 1082a applies thrust to the mixture and the reverse-paddle face 1082b diverts the mixture flowing through the paddle portion 1082.

More specifically, the blade portion 1082 further includes a transition surface 1082c, the transition surface 1082c being disposed between the top and bottom of the positive and negative planes 1082a, 1082b, as shown, the transition surface 1082c obliquely intersecting the central axis; with this arrangement, a part of the mixture pushed by the positive paddle face 1082a flows toward the transition face 1082c on the side close to the stirring space 101a, so that the part of the mixture is kneaded between the transition face 1082c and the impregnation column to be uniformly mixed; in addition, the transition surface 1082c on the side close to the feeding channel 102c and the positive paddle surface 1082a form a chamfer 1082d, so that when the paddle portion 1082 rotates, the mixture in the wetting channel 107a is divided, and a part of the mixture flows along the transition surface 1082c on the side, thereby further promoting the uniform mixing of the mixture.

As shown in fig. 3, 7 and 8, the infiltration pipe 107 preferably includes a plurality of flange pipes 1071, the flange pipes 1071 are connected in sequence to form the infiltration pipe 107, and the infiltration paddle 108 is accommodated in a space surrounded by the flange pipes 1071; by adopting the mode, the wetting paddle piece 108 and the wetting pipe piece 107 are sequentially sleeved on the feeding main shaft 105, so that the installation can be completed, and the assembly is convenient.

Preferably, the stirring device 100 for high-solid-content slurry of the present application includes a soaking ring 110, which is configured to have a ring structure and is sleeved outside the feeding main shaft 105, one end of the soaking column 109 is connected to the soaking pipe 107, and the other end is connected to the soaking ring 110, so that the soaking ring 110 connects the soaking columns 109 located at the same axial position into a whole, thereby improving the stability of the soaking columns 109.

As shown in fig. 1, preferably, the feeding pipe 102 is formed with a plurality of liquid inlets 102b, and the liquid inlets 102b are located at different circumferential positions, which is beneficial to simultaneously input the same liquid or different types of liquid, so that the liquid is uniformly input into the infiltration pipe in the circumferential direction, and the infiltration efficiency is improved.

As shown in fig. 3 and 4, preferably, the partial length of the feed main shaft 105 is sleeved with a bearing housing 112, the bearing housing 112 is connected to the feed pipe 102, and correspondingly, a speed reducer 114 is mounted to the bearing housing 112. The bearing housing 112 is formed with a housing inner space for mounting a plurality of bearings.

As shown in fig. 2, when the stirring paddle 113 is operated at a high speed to stir the mixture of the powder material and the liquid material, a lot of heat is generated, and the mixture is easily denatured by continuously raising the temperature to a certain temperature. Preferably, the stirring tank 101 is further formed with a cooling interlayer 101b, and the cooling interlayer 101b is configured to have a cooling channel 1011a, a liquid inlet 1011b and a liquid outlet 1011 c; the cooling channel 1011a is arranged around the stirring space 101a, the liquid inlet 1011b is used for cooling liquid to flow into the cooling channel 1011a, the liquid outlet 1011c is used for cooling liquid to flow out of the cooling channel 1011a, and the cooling liquid flowing through the cooling channel continuously takes away redundant heat in the redundant stirring space 101a, so that the slurry denaturation caused by temperature rise is prevented. Specifically, the agitation tank 101 includes an outer tank 1011 and an inner tank 1012, and the cooling jacket 101b is configured between the outer tank 1011 and the inner tank 1012.

More specifically, stirring tank 101 includes liquid inlet pipe 1013 and liquid outlet pipe 1014, liquid inlet 1011b is formed on liquid inlet pipe 1013, and liquid inlet 1013 extends to a region close to the central axis along the radial direction, so as to prolong the residence time of the cooling liquid input from liquid inlet 1011b to cooling channel 1011a, and sufficiently absorb heat to improve the heat dissipation effect.

As shown in fig. 9 to 12, as a specific solution, the paddle 113 includes a dispersion plate 116, a plurality of dispersion columns 117, and a guide cone 118; the dispersion plate 116 is configured to have a center portion 1161 and a plurality of paddle block portions 1162 provided on the periphery of the center portion 1161, the center portion 1161 being configured to be centrosymmetric with respect to a central axis.

The plurality of dispersion columns 117 are respectively arranged on the paddle block parts 1162 to synchronously rotate along with the dispersion columns 117; the diversion cone 118 is disposed on the top of the central portion 1161 and is formed with a first diversion surface 1181, so as to guide the slurry in the upper space of the dispersion plate 116 to flow more smoothly to the dispersion plate 116, thereby increasing the fluidity of the mixture.

The dispersion disc 116 drives the dispersion column 117 to rotate at a high speed, and the mixture of the powder and the liquid is forcibly sheared and scattered by the dispersion column 117 and is forcibly thrown to the inner wall of the inner tank body 1012 at a high speed; since the rotation speed of the intermediate region on the side of the dispersion column 117 closer to the center axis is low, the mixture in the upper part of the tank inner space tends to fall and fill the intermediate region, increasing the fluidity of the mixture in the tank inner space.

The dispersion plate 116 is formed with a mounting hole 116b into which an end portion of the stirring spindle 103 is inserted, and a fitting inner surface 116c is formed around the dispersion axis, and a fitting outer surface 1031 is formed around the spindle axis at the portion where the stirring spindle 103 is inserted into the mounting hole 116b, and after the spindle is inserted into the mounting hole 116b and pressed, the fitting outer surface 1031 and the fitting inner surface 116c form an interference fit to frictionally drive the dispersion plate 116 to rotate. In addition, the dispersion plate 116 is connected to the end of the stirring shaft 103 by a fastener, preventing the two from separating.

More specifically, the paddle part 1162 is configured to have one forward flow surface 1163 and one reverse flow surface 1164, the forward flow surface 1163 and the reverse flow surface 1164 being disposed on opposite sides of the one paddle part 1162 and obliquely intersecting the central axis; a diversion channel 116a is arranged between the forward diversion surface 1163 of one paddle block part 1162 and the reverse diversion surface 1164 of the other paddle block part 1162, and the diversion channel 116a axially penetrates through the dispersion plate 116, so that at least part of slurry is guided to the bottom of the dispersion plate 116 when the dispersion plate 116 rotates; specifically, the flow guide surface is at least partially constructed as a part of the conical surface, so that the flow guide effect of the flow guide surface is improved.

With the above scheme, when the paddle block portion 1162 rotates, the positive diversion surface 1163 cuts a part of the mixture and pushes the mixture to the bottom of the space in the tank, so that the flow of the mixture is promoted; the deflector surface 1164 directs the mixture through the deflector channel 116 a.

As shown in fig. 10 to 11, the flow guide surface 1163 is preferably inclined to intersect with the radial direction of the central axis, and when it rotates, applies a radial force to the mixture flowing through the flow guide passage 116a to throw the mixture out, thereby increasing the fluidity of the mixture. Specifically, the positive flow guide surface 1163 is configured as a streamlined curved surface.

Preferably, the deflector surface 1164 intersects the central axis in a direction that is inclined radially, and directs a portion of the mixture flowing through the deflector channel 116a radially during rotation to increase the fluidity of the mixture. Specifically, the deflector surface 1164 is configured as a streamlined curved surface. The streamlined curved surface helps to reduce drag.

Preferably, a projection area of the front diversion surface 1163 on a projection plane perpendicular to the central axis is smaller than or equal to a projection area of the rear diversion surface 1164 on a projection plane perpendicular to the central axis. This allows the paddles entering the flow guide channel 116a to be gradually compressed toward the bottom of the dispersion plate 116.

Preferably, the top of paddle block portion 1162 is configured as an arc; the tops of paddle block portions 1162 are configured to be on an arcuate surface. This may further reduce the resistance of the slurry to the dispersion disc 116.

As shown in fig. 10 and 12, the dispersion column 117 preferably includes a column top 1171 and a column bottom 1172; wherein the column top 1171 is arranged above the paddle block portion 1162, and the column bottom 1172 is arranged below the paddle block portion 1162; the dispersion post 117 has at least a cylindrical surface disposed parallel to the central axis.

As shown in fig. 2 and 13, the stirring device 100 preferably further includes a spoiler 115 for stopping the circumferential flow of the slurry carried by the stirring paddle 113 at the inner wall of the stirring tank 101. Be provided with a plurality of spoilers 115 in agitator tank inner wall different circumferential direction position, and spoiler 115 extends along the axial, and part circumferential direction's thick liquids climb upwards under spoiler 115's guide after the contact with spoiler 115, avoid by thick liquids only circumferential direction under dispersion impeller 116 and dispersion post 117 effect, strengthened the upper and lower roll of thick liquids, improve the stirring effect.

Optionally, the spoiler 115 is fixedly or rotatably disposed on the inner wall of the agitation tank. Wherein the inclination angle of the adjustable spoiler 115 is rotatably set to be suitable for different dispersion rotation speeds.

As shown in fig. 9 to 12, the projection of the bottom surface of the dispersion board 116 on the projection plane perpendicular to the dispersion axis is a straight line segment, and the gap between the bottom surface of the dispersion board 116 and the bottom surface of the inner tank 1012 forms a kneading area; when the mixture enters the kneading area, the space suddenly becomes smaller, and the mixture is kneaded by the extrusion of the bottom of the dispersion disc 116 and the bottom surface of the inner tank 1012, so that the uniform mixing effect is improved.

The forward flow guide surface 1163 and the reverse flow guide surface 1164 are connected by a connecting surface 1165, so that a certain distance is formed between the connecting position of the forward flow guide surface 1163 and the reverse flow guide surface 1164, and the passing performance of the mixture in the flow guide channel 116a is guaranteed.

The central portion 1161 is formed with a conical boss 1166, the guiding cone 118 is mounted on the boss 1166, the boss 1166 is formed with a second guiding surface 1163, and the taper of the second guiding surface 1163 is the same as that of the first guiding surface, so that the slurry smoothly flows from the surface of the guiding cone 118 to the dispersing plate 116.

The first flow guiding surface and the top surface of the dispersion plate 116 have intersecting flow guiding outer edges, the connecting surface 1165 and the top surface of the dispersion plate 116 have intersecting transition outer edges, and at least part of the transition outer edges are overlapped with the flow guiding outer edges. So that the slurry flowing through the guide cone 118 is directly guided to the guide channel 116a, and the flowing effect is enhanced.

The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention in the embodiments of the present disclosure is not limited to the specific combinations of the above-mentioned features, and other embodiments in which the above-mentioned features or their equivalents are combined arbitrarily without departing from the spirit of the invention are also encompassed. For example, the above features and (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure are mutually replaced to form the technical solution.

Claims (10)

1. A paddle, comprising:

a dispersion tray configured to have a central portion and a plurality of paddle block portions disposed at a periphery of the central portion;

the method is characterized in that:

the stirring rake still includes:

the dispersing columns are respectively arranged on the paddle block parts;

the flow guide cone is arranged at the top of the central part and is provided with a first flow guide surface;

wherein the central portion is configured to be centrosymmetric with respect to a central axis; the paddle part is constructed to be provided with a positive flow guide surface and a negative flow guide surface, and the positive flow guide surface and the negative flow guide surface are arranged on two opposite sides of the paddle part and are obliquely intersected with the central axis; a guide channel which obliquely extends in the axial direction and is open in the radial direction is formed between the positive guide surface of one paddle block part and the negative guide surface of the other paddle block part so as to guide at least part of slurry to the bottom of the dispersion disc when the dispersion disc rotates; the flow guide surface is at least partially formed as a part of a conical surface.

2. The paddle of claim 1, wherein:

the positive diversion surface is obliquely intersected with the radial direction of the central axis.

3. The paddle of claim 2, wherein:

the positive diversion surface is constructed into a streamline curved surface.

4. The paddle of claim 1, wherein:

the reverse flow guide surface is obliquely intersected with the radial direction of the central axis.

5. The paddle of claim 4, wherein:

the flow inversion surface is constructed as a streamlined curved surface.

6. The mixing paddle of any of claims 1 to 5, wherein:

the projection area of the positive diversion surface on the projection plane vertical to the central axis is smaller than or equal to the projection area of the inverse diversion surface on the projection plane vertical to the central axis.

7. The paddle of claim 1, wherein:

the top of the paddle block part is constructed into an arc-shaped surface; the tops of the paddle block portions are configured to be on an arcuate surface.

8. The paddle of claim 1, wherein:

the dispersion column includes:

the column top is arranged above the paddle block part;

the column bottom is arranged below the paddle block part;

wherein the dispersion column has at least a cylindrical surface disposed parallel to the central axis.

9. A stirring device, comprising:

a stirring tank body which forms a stirring space;

the method is characterized in that:

the stirring device further includes:

an agitator paddle according to any of claims 1 to 8, arranged at the bottom of the agitator space in the agitator tank.

10. The stirring device of claim 9, wherein:

the stirring device further includes:

and the spoiler is used for stopping the circumferential flow of the slurry driven by the stirring paddle at the inner wall of the stirring tank body.

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