CN116966628A - Centrifugal extraction machine mixing structure - Google Patents

Abstract

The invention relates to the technical field of solvent extraction equipment, and particularly provides a centrifugal extractor mixing structure, which comprises a shell, wherein a rotary drum accommodating cavity for installing a rotary drum is arranged in the shell, a feed inlet is arranged on the side wall of the rotary drum accommodating cavity, an annular inlet and a plurality of flow dividing guide vanes are arranged at the bottom wall of the rotary drum accommodating cavity, the flow dividing guide vanes are arranged at intervals in the circumferential direction of the annular inlet, one end of each flow dividing guide vane is a feeding end far away from the annular inlet, and the other end is a discharging end; the space between the top edge of the feeding end and the bottom wall of the drum accommodating cavity is smaller than the space between the top edge of the discharging end and the bottom wall of the drum accommodating cavity, and the space is used for enabling the feeding end to intercept a part of the rotary feed liquid and simultaneously enabling a part of the rotary feed liquid to pass over from the top of the feeding end. The centrifugal extractor provided by the invention effectively solves the technical problem that the mixing effect of the rotary drum accommodating cavity of the centrifugal extractor in the prior art on feed liquid is limited.

Description

Centrifugal extraction machine mixing structure

Technical Field

The invention relates to the technical field of solvent extraction equipment, in particular to a mixing structure of a centrifugal extractor.

Background

The centrifugal extractor is extraction equipment designed by utilizing the extraction separation principle and is widely applied to the fields of metallurgy, medicine and chemical industry. The mixing modes of the centrifugal extractor in the market at present mainly adopt an annular space structure, wherein light liquid phase and heavy liquid phase enter an annular space between a shell and a rotary drum of the centrifugal extractor from respective feed inlets, and the materials are mixed vigorously by utilizing the vortex effect generated by the rotary drum rotating at high speed in an annular space cavity; the other is to forcibly agitate the mixed liquid by a paddle that rotates in synchronization with the rotating drum. The mixing intensity of the two mixing modes is relatively high, the power consumption is high, and the high-intensity mixing is easy to emulsify liquid, so that incomplete phase separation or reduced treatment capacity is caused. The mixing intensity of the two mixing modes is relatively high, the power consumption is high, and the high-intensity mixing is easy to emulsify liquid, so that incomplete phase separation or reduced treatment capacity is caused.

The chinese patent with the publication number CN203842347U discloses a centrifugal extractor, as shown in fig. 1, the mixing structure of the centrifugal extractor includes a casing 1, a drum accommodating cavity 2 is formed on an inner wall surface of the casing 1, a feed inlet 3 is disposed on a side wall of the drum accommodating cavity 2, a circular opening is disposed on a bottom wall of the drum accommodating cavity 2, the circular opening is communicated with a mixing chamber disposed at a lower side of the bottom wall of the drum accommodating cavity 2, a drum 6 is coaxially rotatably assembled in the drum accommodating cavity 2, a feed terminal 7 disposed at a lower side of the drum 6 extends into the mixing chamber through the circular opening, and an annular inlet 5 for feeding liquid moves downwards into the mixing chamber is formed between the feed terminal 7 and the circular opening. As shown in fig. 1 and 2, vortex guide vanes 4 are arranged on the bottom wall of the drum accommodating cavity 2, the vortex guide vanes 4 comprise guide vanes 41 for guiding feed liquid entering from a feed inlet and flow dividing guide vanes 42 for dividing the feed liquid into flow dividing, the flow dividing guide vanes 42 are uniformly arranged at intervals in the circumferential direction of the annular inlet 5, one end of the flow dividing guide vanes, which is far away from the annular inlet 5, is provided with a feed end 43, the other end of the flow dividing guide vanes is provided with a discharge end 44, and a feed liquid flow channel is formed between the adjacent vortex guide vanes 4. When in use, feed liquid falls to the bottom wall of the drum accommodating cavity 2 along the tangential direction of the drum accommodating cavity 2 through the feed inlet 3, the feed liquid swirls on the bottom wall of the drum accommodating cavity 2 at a high speed under the action of the initial speed, when the swirled feed liquid passes through the diversion guide vane 42 under the guidance of the diversion guide vane 41, the feed liquid positioned at the inner side of the corresponding feed end 43 can be intercepted in the radial direction of the drum accommodating cavity 2, the intercepted feed liquid can flow into the annular inlet 5 after being mixed in the corresponding feed liquid flow channel, the feed liquid outside the corresponding feed end 43 passes through the feed end 43 and enters the downstream area of the corresponding flow dividing guide vane 42 so as to pass through the next flow dividing guide vane 42, after the swirling feed liquid swirls for one circle, the feed liquid is intercepted by the vortex guide vane 4 and divided into feed liquid with the same number as that of the vortex guide vanes 4, and each intercepted feed liquid is mixed in the corresponding feed liquid flow passage and finally flows into the annular inlet 5. After the feed liquid enters the mixing chamber, the feed liquid is sucked into the inside of the rotary drum 6 through a feed terminal 7 at the lower side of the rotary drum 6, and under the action of centrifugal force, the mixed two liquid phases are rapidly separated in the process of flowing from bottom to top in the rotary drum 6, and the mass transfer process and the separation process of the centrifugal extractor are completed in the extremely short time of the stay of the feed liquid in the equipment.

The centrifugal extractor solves the problems of high mixing power consumption, easy emulsification of feed liquid and the like of the conventional centrifugal extractor, but has the following problems in use: firstly, the flow speed and the flow rate of the feed liquid influence, the intercepted feed liquid amounts are different in the process of the feed liquid passing through each flow dividing guide vane, and each intercepted feed liquid can be mixed only in a corresponding feed liquid flow passage, so that the feed liquid is insufficiently mixed when entering a mixing chamber; secondly, the liquid is difficult to realize equipartition, the initial speed of the liquid is higher, the liquid flow is finer when the liquid flows swirls, the liquid intercepted by the diversion guide vanes which are firstly contacted with the liquid is fewer, the liquid intercepted by the diversion guide vanes which are later contacted with the liquid is gradually increased, especially after passing through the last diversion guide vane, all the liquid which is not intercepted by the diversion guide vanes is intercepted into the corresponding liquid flow channel, even the liquid intercepted by the diversion guide vanes can occupy about seventy percent of the total liquid amount, so that the liquid in the liquid flow channel can be jammed when entering the annular inlet, and further the feeding efficiency is affected; thirdly, when the flow speed of the convoluted feed liquid is too fast, the feed liquid can splash when passing through the diversion guide vane, and the splashed feed liquid can strike the rotating drum to interfere the rotation of the rotating drum, so that the extraction effect is affected.

Disclosure of Invention

The invention aims to provide a mixing structure of a centrifugal extractor, which aims to solve the technical problem that a rotating drum accommodating cavity of the mixing structure of the centrifugal extractor in the prior art has limited mixing effect on feed liquid.

The invention discloses a centrifugal extractor mixing structure, which adopts the following technical scheme:

the centrifugal extractor mixing structure comprises a shell, wherein a rotary drum accommodating cavity for installing a rotary drum is arranged in the shell, a feed inlet is formed in the side wall of the rotary drum accommodating cavity, an annular inlet and a plurality of flow dividing guide vanes are arranged at the bottom wall of the rotary drum accommodating cavity, the flow dividing guide vanes are arranged at intervals in the circumferential direction of the annular inlet, one end of each flow dividing guide vane is a feed end far away from the annular inlet, and the other end of each flow dividing guide vane is a discharge end; the space between the top edge of the feeding end and the bottom wall of the drum accommodating cavity is smaller than the space between the top edge of the discharging end and the bottom wall of the drum accommodating cavity, and the space is used for enabling the feeding end to intercept a part of the rotary feed liquid and simultaneously enabling a part of the rotary feed liquid to pass over from the top of the feeding end.

The beneficial effects are that: when the centrifugal extractor mixing structure provided by the invention is used, feed liquid can whirl at the bottom wall of the drum accommodating cavity after entering the drum accommodating cavity, a feed liquid flow channel is formed between adjacent split guide vanes, when the whirl feed liquid passes through the feed end on each split guide vane, the feed end intercepts a part of feed liquid because the distance between the top edge of the feed end and the bottom wall of the drum accommodating cavity is smaller than the distance between the top edge of the discharge end and the bottom wall of the drum accommodating cavity, the intercepted feed liquid enters the corresponding feed liquid flow channel, and the non-intercepted feed liquid passes through the upper side area of the corresponding feed end; in the material liquid whirling process, the material liquid which is not intercepted by the material inlet end passes through the corresponding material inlet end to be mixed with the material liquid in the corresponding adjacent material liquid flow channel, so that the mixing effect is enhanced; meanwhile, the space between the top edge of the feeding end and the bottom wall of the drum accommodating cavity is small, so that the intercepted feed liquid is small, more than one circle of rotations can be carried out on the feed liquid, the interception times of the feeding end are increased, and accordingly, the mixing times of the intercepted feed liquid are also increased. On the other hand, because the intercepted amount of the feed liquid is smaller at one time, the intercepting times are more, and the distribution principle of small and more fetching is applied, when the feed liquid with different flow rates is faced, the feed liquid amount in each feed liquid flow channel can be equally divided as much as possible, the excessive feed liquid amount in each individual feed liquid flow channel can be avoided, and the corresponding local congestion of the feed liquid when entering the annular inlet is prevented, so that the feeding efficiency is improved; in addition, the space between the top edge of the feeding end and the bottom wall of the rotary drum accommodating cavity is small, so that the splashing degree of feed liquid when the feed liquid passes through the diversion guide vane can be reduced, and the influence on the rotation of the rotary drum is reduced.

Further, the top edge of the flow dividing guide vane is a smooth inclined edge, and the distance between the top edge of the flow dividing guide vane and the bottom wall of the rotary drum accommodating cavity is gradually increased along the direction from the feeding end to the discharging end.

The beneficial effects are that: the diversion guide vane adopts the gentle transition structure, so that the feed liquid can more easily pass through the feed end, and the mixing of the feed liquid in each feed liquid flow passage is enhanced; on the other hand, the method aims at avoiding the problem that the splashing degree is aggravated due to the abrupt change of the height of the feed liquid when the feed liquid passes through the diversion guide vane, so that the rotation of the rotary drum is influenced.

Further, the inner wall surface of the annular inlet is circular, and the included angle between the tangent corresponding to each discharge end and the tangent corresponding to the corresponding part of the annular inlet is not more than 30 degrees; or the inner wall surface of the annular inlet is regular polygon, and the included angle between the tangent line corresponding to each discharge end and the corresponding side of the regular polygon is not more than 30 degrees.

The beneficial effects are that: the discharge end is arranged in order to prevent the feed liquid from impacting the feeding terminal in the middle of the annular inlet when the feed liquid enters the annular inlet, so that impact congestion is caused.

Further, a plurality of overflow holes are arranged on the side surface of the flow dividing guide vane, and each overflow hole is arranged at intervals in the extending direction of the flow dividing guide vane so that feed liquid passes through when the feed liquid flows along the flow dividing guide vane to improve the mixing effect.

The beneficial effects are that: in the process that the feed liquid flows into the annular inlet along the diversion guide vane, the mixing protrusion can play a certain role in blocking the feed liquid, so that the mixing time of the feed liquid in the feed liquid flow channel is prolonged, and the mixing effect is improved.

Further, the shape of the mixing protrusion is a circular convex column.

The beneficial effects are that: the outer peripheral surface of the circular convex column is smooth, and the impact generated when the feed liquid passes through the circular convex column is small, so that the feed liquid is effectively prevented from splashing in the process of flowing into the annular inlet, and the splashed feed liquid generally falls onto the rotary drum easily, thereby influencing the normal rotation of the rotary drum.

Further, a plurality of overflow holes are arranged on the side surface of the flow dividing guide vane, and each overflow hole is arranged at intervals in the extending direction of the flow dividing guide vane so that feed liquid passes through when the feed liquid flows along the flow dividing guide vane to improve the mixing effect.

The beneficial effects are that: in the process that the feed liquid flows into the annular inlet along the split guide vane, part of the feed liquid in each feed liquid flow channel can enter the adjacent feed liquid flow channel through the flow holes and is mixed with the feed liquid in the corresponding feed liquid flow channel again, so that the mixing effect is further improved.

Further, a guide vane is further arranged at the bottom wall of the drum accommodating cavity and is isolated between the annular inlet and the feeding port or the blanking port of the spiral premixing channel, and a heightening part is arranged on the guide vane at the side of the feeding port or the blanking port to prevent the feed liquid splashed when the feed liquid falls to the bottom wall of the drum accommodating cavity from impacting on the drum.

The beneficial effects are that: in order to avoid the splashing feed liquid impinging on the drum, the rotation of the drum is thereby affected.

Further, the guide vane is only arranged near the position where the feed liquid falls to the bottom wall of the rotary drum accommodating cavity.

The beneficial effects are that: the guide vanes are arranged in such a way as to simplify the structure at the bottom wall of the receiving chamber.

Further, the guide vane is provided with a tail end extending to the annular inlet, a concave part with lower height is arranged on the guide vane at a position corresponding to the feeding end of the split guide vane along the circumferential direction, and a part between the concave part and the tail end of the guide vane forms a split guide vane.

The beneficial effects are that: the arrangement is to prolong the flow guide length of the flow guide vane, improve the flow guide effect, and in addition, the concave part and the tail end of the flow guide vane form a new one-position flow guide vane, so that the flow distribution times of feed liquid can be increased, and the mixing effect is improved.

Further, an inclined transition plate is further arranged at the bottom wall of the rotary drum accommodating cavity and is positioned at the lower side of the feeding hole or the blanking hole of the spiral premixing channel so as to buffer the impact of the falling feed liquid.

The beneficial effects are that: when the feed liquid falls to rotary drum accommodation chamber diapire department, the slope transitional surface can avoid the feed liquid directly to strike the rotary drum accommodation chamber diapire, reduces the kinetic energy loss of feed liquid to make the feed liquid preserve more kinetic energy and be used for circling round.

Drawings

FIG. 1 is a schematic diagram of a conventional centrifugal extractor;

FIG. 2 is a schematic view of the bottom wall of the drum receiving chamber of the centrifugal extractor of FIG. 1;

FIG. 3 is a schematic structural view of a centrifugal extractor mixing structure provided by the present invention;

FIG. 4 is a schematic view of the structure at the bottom wall of the receiving chamber of the drum of FIG. 3;

FIG. 5 is a schematic view of the structure of the inclined transition plate at the bottom wall of the drum receiving chamber; (guide vane not shown in the figure)

FIG. 6 is a flow diagram of feed liquid at the bottom wall of the drum receiving cavity;

fig. 7 is a schematic view of the structure at the bottom wall of the drum accommodating chamber in embodiment 10 and embodiment 13;

FIG. 8 is a side view of FIG. 7;

fig. 9 is a schematic view of the structure at the bottom wall of the drum accommodating chamber in embodiment 11 and embodiment 12;

fig. 10 is a schematic view of the structure at the bottom wall of the drum accommodating chamber in embodiment 14.

The names of the corresponding components in the figures are:

in fig. 1 to 2: 1. a housing; 2. a drum accommodating chamber; 3. a feed inlet; 4. a swirl vane; 41. a guide vane; 42. a splitter vane; 43. a feeding end; 44. a discharge end; 5. an annular inlet; 6. a rotating drum; 7. a feeding terminal;

in fig. 3 to 6: 1. a housing; 2. a drum accommodating chamber; 21. tilting the transition plate; 22. an annular inlet; 3. a feed inlet; 4. a guide vane; 41. a heightening part; 42. a concave portion; 43. a split flow section; 5. a splitter vane; 51. a feeding end; 52. a discharge end; 6. a feed liquid; 61. a feed liquid blocked part; 62. a feed liquid passing portion;

fig. 7 to 8: 100. a housing; 200. a drum accommodating chamber; 201. an annular inlet; 300. a guide vane; 400. a splitter vane;

in fig. 9: 500. a drum accommodating chamber; 501. a splitter vane; 502. mixing the protrusions;

in fig. 10: 500. a drum accommodating chamber; 501. a splitter vane; 503. and the overflow hole.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.

It should be noted that in the present embodiment, relational terms such as "first" and "second" and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprising one … …" or the like, as may occur, does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the depicted element.

In the description of the present invention, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; either directly, indirectly through intermediaries, or in communication with the interior of the two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.

In the description of the present invention, unless explicitly stated and limited otherwise, the term "provided" as may occur, for example, as an object of "provided" may be a part of a body, may be separately arranged from the body, and may be connected to the body, and may be detachably connected or may be non-detachably connected. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.

The present invention is described in further detail below with reference to examples.

Example 1 of the mixing structure of the centrifugal extractor in the present invention:

as shown in fig. 3 and 6, the centrifugal extractor mixing structure provided in this embodiment includes a housing 1, a drum accommodating chamber 2 is formed on an inner wall surface of the housing 1, a feed inlet 3 is provided on the drum accommodating chamber 2, and a mixing feeder is provided at a bottom wall of the drum accommodating chamber 2, and includes an annular inlet 22 and vortex guide vanes. Furthermore, a mixing chamber is arranged at the underside of the drum receiving chamber 2. In use, as shown in fig. 3 and 5, the feed liquid 6 falls to the bottom wall of the drum accommodating cavity 2 after entering the feed inlet 3, and the feed liquid 6 enters the mixing chamber through the annular inlet 22 after being guided and divided by the vortex guide vanes.

In this embodiment, as shown in fig. 3 and fig. 4, the whole shell 1 is cylindrical, the inner wall surface of the shell 1 forms a cylindrical drum accommodating cavity 2, the feed inlet 3 is arranged on the side wall of the drum accommodating cavity 2, as shown in fig. 3, the bottom wall of the drum accommodating cavity 2 is a concave arc surface, the annular inlet 22 is arranged in the middle of the bottom wall of the drum accommodating cavity 2, the annular inlet 22 is circular, the vortex guide vanes are uniformly spaced in the circumferential direction of the annular inlet 22, a feed liquid flow channel is formed between adjacent vortex guide vanes, the vortex guide vanes comprise guide vanes 4 and diversion guide vanes 5, specifically, the number of the guide vanes 4 is 1, the number of the diversion guide vanes 55 is five, and the structures of the diversion guide vanes 5 are identical. The splitter vane 5 is a circular arc-shaped blade, the splitter vane 5 is provided with a feeding end 51 and a discharging end 52, the feeding end 51 is one end of the splitter vane 5 far away from the annular inlet 22, and the discharging end 52 is one end of the splitter vane 5 near the annular inlet 22. The distance between the top edge of the feeding end 51 and the bottom wall of the drum accommodating cavity 2 is smaller than the distance between the top edge of the discharging end 52 and the bottom wall of the drum accommodating cavity 2, specifically, along the direction from the feeding end 51 to the discharging end 52, the top edge of the flow dividing guide vane 5 is a smooth oblique edge, and the distance between the top edge of the flow dividing guide vane 5 and the bottom wall of the drum accommodating cavity 2 is gradually increased.

In this embodiment, a spiral premixing passage is arranged in the drum accommodating chamber 2, and the feed liquid 6 is mixed in the spiral premixing passage after entering the drum accommodating chamber 2 through the feed inlet 3, and then falls to the bottom wall of the drum accommodating chamber 2 through the blanking port of the spiral premixing passage. In this embodiment, a guide vane 4 is disposed between the blanking port and the annular inlet 22 of the spiral premixing channel, and as shown in fig. 3 and 4, the guide vane 4 has a spiral structure. In order to prevent the material liquid 6 from impacting the splashed material liquid 6 on the rotary drum when the material liquid 6 falls to the bottom wall of the rotary drum accommodating cavity 2 through the feeding port 3, the guide vane 4 is provided with a heightening part 41, the heightening part 41 is arranged at the side of the blanking port of the spiral premixing passage, and the heightening part 41 shields the rotary drum, so that the splashed material liquid 6 impacts the heightening part 41. As shown in fig. 4, the guide vane 4 has a tip end extending to the annular inlet 22, the guide vane 4 is provided with a recess 42 having a low height, the recess 42 is specifically provided at a position circumferentially corresponding to the feed end 51 of the splitter vane 5, and a portion between the recess 42 and the tip end of the guide vane 4 forms a split portion 43. The end of the guide vane 4 facing the annular inlet 22 is provided with a flow dividing part 43, and the structure of the flow dividing part 43 is the same as that of the flow dividing vane 5. Accordingly, the flow dividing part 43 can guide the feed liquid 6, and the flow dividing part 43 and the flow dividing guide vanes 5 on two adjacent sides respectively form a feed liquid flow passage. The split portions 43 and the split guide vanes 5 are arranged at even intervals around the annular inlet 22, and form six feed liquid flow passages together. In other embodiments, the diverting section 43 may also be arranged separate from the guide vane 4, in which case the diverting section 43 is used identically to the diverting vane 5.

In this embodiment, as shown in fig. 4 and fig. 6, when the feed liquid 6 falls onto the bottom wall of the drum accommodating cavity 2, a certain initial velocity is provided for the feed liquid 6 to whirl at the bottom wall of the drum accommodating cavity 2 under the drainage of the guide vane 4, and when the whirled feed liquid 6 passes over the feed end 51 of one of the shunt vanes 5, the corresponding feed end 51 intercepts a portion of the feed liquid 6, for convenience of description, the intercepted feed liquid 6 is defined as a feed liquid blocked portion 61, the feed liquid blocked portion 61 is located in a region of the corresponding shunt vane 5 facing the whirling direction of the feed liquid 6, and the feed liquid 6 passing over the corresponding feed end 51 is a feed liquid passing portion 62, and the feed liquid passing portion 62 passes over the corresponding feed end 51 to sequentially pass over the feed end 51 of the next shunt vane 5, so as to repeat the foregoing process.

It should be noted that, since the feed liquid 6 continuously passes through the feed end 51 of each of the splitter vanes 5 during the swirling process, when passing through the feed end 51 of the next splitter vane 5, the feed liquid passing portion 62 passing through the feed end 51 of the last splitter vane 5, a portion of the feed liquid 6 in the feed liquid passing portion 62 is intercepted by the corresponding feed end 51, and the intercepted portion of the feed liquid 6 becomes the feed liquid blocked portion 61, so the feed liquid blocked portion 61 and the feed liquid passing portion 62 are only divided with respect to the feed liquid 6 at the time of passing through the corresponding feed end 51.

In this embodiment, as shown in fig. 5, during the rotation of the liquid 6, a part of the liquid blocked portion 61 in each liquid flow channel also passes over the corresponding feeding end 51 and is mixed with the liquid blocked portion 61 in the adjacent liquid flow channel, along with the reciprocal rotation of the liquid 6, the liquid blocked portion 61 in each liquid flow channel continuously passes over the corresponding feeding end 51 and is mixed with the liquid blocked portion 61 in the adjacent liquid flow channel, the number of rotations of the liquid 6 is increased, the mixing times between the liquid blocked portions 61 in each liquid flow channel is correspondingly increased, and the mixing effect of the liquid 6 is better.

In this embodiment, the lower the height of the feeding end 51 of the diversion guide vane 5, the smaller the amount of the feeding end 51 intercepting the feed liquid 6, the easier the swirling feed liquid 6 passes over the feeding end 51, and accordingly, the number of rotations of the feed liquid 6 increases. As shown in fig. 3, the feeding end 51 has a pointed structure, so that the height of the feeding end 51 is ensured to be low enough, and the low height of the feeding end 51 can reduce the splashing degree of the feed liquid 6 when the feed liquid passes through the diversion guide vane 5, and reduce the influence on the rotary drum. In addition, because the intercepted amount of the feed liquid 6 is smaller at one time, the intercepting times are more, and the distribution principle of small and excessive intercepting is applied, when the feed liquid 6 with different flow rates is faced, the feed liquid 6 in each feed liquid flow channel can be equally divided as much as possible, so that excessive feed liquid 6 in each individual feed liquid flow channel can be avoided, and the corresponding local congestion of the feed liquid 6 is caused when the feed liquid enters the annular inlet 22.

In this embodiment, since the amount of the material liquid 6 intercepted by the material inlet 51 is small, at any moment, the material liquid blocked portion 61 in the material liquid flow channel is relatively small, so that the material liquid 6 is not too concentrated when entering the annular inlet 22, and congestion is avoided.

In this embodiment, the lower end of the bowl is connected to a feed terminal which passes through the annular inlet 22 and into the mixing chamber. In order to avoid that the feed liquid 6 impacts the feeding terminal when entering the annular inlet 22, as shown in fig. 3 and 5, the inner wall surface of the annular inlet 22 is circular, the tangent line at the discharging end 52 of the splitter vane 5 is tangent to the corresponding position of the annular inlet 22, that is, the angle between the tangent line at the discharging end 52 and the tangent line at the corresponding position of the annular inlet 22 is zero, and when the feed liquid blocking portion 61 enters the annular inlet 22, the impact direction of the feed liquid 6 does not point to the center of the annular inlet 22, but enters against the side wall of the annular inlet 22, thereby avoiding impact congestion.

In this embodiment, as shown in fig. 5, the bottom wall of the drum accommodating cavity 2 is further provided with an inclined transition plate 21, the inclined direction of the inclined transition plate 21 is from top to bottom and inclined to the tangential direction of the rotation direction of the feed liquid 6 at the position, and the inclined transition plate 21 is disposed at the lower side of the blanking port of the spiral premixing channel, so that the feed liquid 6 can directly fall onto the inclined transition plate 21 after entering the drum accommodating cavity 2 from the feed port 3, the inclined transition plate 21 can avoid the feed liquid 6 from directly striking the bottom wall of the drum accommodating cavity 2, the kinetic energy loss of the feed liquid 6 falling is reduced, and the splashing degree of the feed liquid 6 falling can be reduced.

Example 2 of the mixing structure of the centrifugal extractor in the present invention:

the difference between this embodiment and embodiment 1 is that in embodiment 1, along the direction from the feed end to the discharge end, the top edge of the splitter vane is a smooth oblique edge, and the distance between the top edge of the splitter vane and the bottom wall of the drum mounting cavity is gradually increased. In this embodiment, along the direction from the feeding end to the discharging end, the top edge of the split guide vane is an arc concave edge, and the distance between the top edge of the split guide vane and the bottom wall of the drum mounting cavity is gradually increased.

Example 3 of the mixing structure of the centrifugal extractor in the present invention:

the difference between this embodiment and embodiment 1 is that in embodiment 1, along the direction from the feed end to the discharge end, the top edge of the splitter vane is a smooth oblique edge, and the distance between the top edge of the splitter vane and the bottom wall of the drum mounting cavity is gradually increased. In this embodiment, along the direction of pan feeding end to discharge end, the top edge of reposition of redundant personnel stator is the step face, and the interval between the diapire of reposition of redundant personnel stator top edge and rotary drum installation cavity increases gradually. In other embodiments, the top edge of the splitter vane is a beveled tooth surface along the direction from the feed end to the discharge end, with the spacing between the top edge of the splitter vane and the bottom wall of the drum mounting cavity increasing gradually.

Example 4 of the mixing structure of the centrifugal extractor in the present invention:

the difference between this embodiment and embodiment 1 is that in embodiment 1, the distance between the top edge of the diverting vane and the bottom wall of the drum mounting cavity increases gradually along the direction from the feed end to the discharge end. In this embodiment, along the direction from the feeding end to the discharging end, the distance between the top edge of the part of the diverting guide vane except for the feeding end and the bottom wall of the drum installation cavity is the same, and the distance between the top edge of the feeding end and the bottom wall of the drum accommodation cavity is smaller than the distance between the top edge of the rest part of the diverting guide vane and the bottom wall of the drum accommodation cavity.

Example 5 of the mixing structure of the centrifugal extractor in the present invention:

the difference between this embodiment and embodiment 1 is that in embodiment 1, the feeding end is a pointed structure. In this embodiment, the feeding end is not a pointed structure, and the feeding end has an end face.

Example 6 of the mixing structure of the centrifugal extractor in the present invention:

this embodiment differs from embodiment 1 in that in embodiment 1, the feed liquid directly falls to the bottom wall of the drum accommodating chamber after entering the feed inlet. In the embodiment, a spiral premixing passage is arranged in the barrate accommodating cavity, an inlet of the spiral premixing passage is communicated with the feeding port, feed liquid falls onto the bottom wall of the barrate accommodating cavity through a blanking port of the spiral premixing passage, at the moment, the guide vane is isolated between the annular inlet and the blanking port, and a heightening part is arranged beside the blanking port.

Example 7 of the mixing structure of the centrifugal extractor in the present invention:

the difference between this embodiment and embodiment 1 is that in embodiment 1, the inner wall surface of the annular inlet is circular, the corresponding tangent line at each discharge end is tangent to the annular inlet, and in this embodiment, the angle between the corresponding tangent line at the discharge end and the tangent line at the corresponding position of the annular inlet is 30 degrees. In other embodiments, the angle between the corresponding tangent at the discharge end and the tangent at the corresponding location of the annular inlet may be 15 degrees.

Example 8 of the mixing structure of the centrifugal extractor in the present invention:

this embodiment is different from embodiment 1 in that in embodiment 1, the inner wall surface of the annular inlet is circular. In this embodiment, the inner wall surface of the annular inlet is regular hexagon, and the included angle between the tangent line corresponding to each discharge end and the corresponding side of the regular hexagon is 30 degrees. In other embodiments, the inner wall surface of the annular inlet may be a regular pentagon, and the included angle between the tangent line corresponding to each discharge end and the corresponding side of the regular pentagon deformation is 0 degrees.

Example 9 of the mixing structure of the centrifugal extractor in the present invention:

the difference between this embodiment and embodiment 1 is that in embodiment 1, a spiral premixing passage is arranged inside the rotating drum accommodating chamber, the feed liquid falls to the bottom wall of the rotating drum accommodating chamber through a blanking port of the spiral premixing passage, a guide vane is arranged between the blanking port of the spiral premixing passage and the annular inlet, and an inclined transition plate is arranged at the lower side of the blanking port of the spiral premixing passage. In this embodiment, the spiral premixing channel is not arranged in the drum accommodating cavity, and the feed liquid directly falls to the bottom wall of the drum accommodating cavity through the feed inlet, at this time, the guide vane is arranged between the feed inlet and the annular inlet, and the inclined transition plate is arranged at the lower side of the feed inlet.

Example 10 of the mixing structure of the centrifugal extractor in the present invention:

the present embodiment is different from embodiment 1 in that in embodiment 1, the bottom wall of the drum accommodating chamber is a concave arc surface. In the present embodiment, as shown in fig. 7 and 8, the bottom wall of the drum accommodating chamber 200 on the housing 100 is a tapered surface.

Example 11 of the mixing structure of the centrifugal extractor in the present invention:

the present embodiment is different from embodiment 1 in that in embodiment 1, the bottom wall of the drum accommodating chamber is a concave arc surface. In this embodiment, as shown in fig. 9, the bottom wall of the drum accommodating chamber 500 is a horizontal plane.

Example 12 of the mixing structure of the centrifugal extractor in the present invention:

this embodiment differs from embodiment 1 in that in embodiment 1 the side surfaces of the splitter vane are smooth surfaces. In this embodiment, as shown in fig. 9, a plurality of mixing protrusions 502 are disposed on the side surface of the flow dividing guide vane 501, each mixing protrusion 502 is a circular protrusion, and each mixing protrusion 502 is arranged at intervals along the extending direction of the flow dividing guide vane 501, so as to turbulence the feed liquid when the feed liquid flows along the flow dividing guide vane 501, so as to improve the mixing effect. In other embodiments, each mixing protrusion may be a square protrusion.

Example 13 of the mixing structure of the centrifugal extractor in the present invention:

this embodiment differs from embodiment 1 in that in embodiment 1 the guide vane has a tip end extending to the annular inlet. In this embodiment, as shown in fig. 7, the tip of the guide vane 300 is disposed at the periphery of the feeding end of the splitter vane 400, and is radially spaced from the feeding end of the splitter vane 400.

Example 14 of the mixing structure of the centrifugal extractor in the present invention:

this embodiment differs from embodiment 1 in that the side surfaces of the splitter vane are smooth surfaces. In this embodiment, as shown in fig. 10, on the bottom wall of the drum accommodating cavity 500, a plurality of overflow holes 503 are provided on the side wall of the diversion guide vane 501, and each overflow hole 503 is arranged at intervals in the extending direction of the diversion guide vane 501, so that when the feed liquid flows along the diversion guide vane 501, the feed liquid passes through to promote the mixing effect.

The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a centrifugal extractor mixing structure, includes casing (1), be equipped with in casing (1) and be used for installing rotary drum and hold chamber (2), be equipped with feed inlet (3) on the lateral wall that holds chamber (2) of rotary drum, the diapire department that holds chamber (2) of rotary drum is equipped with annular entry (22) and a plurality of reposition of redundant personnel stator (5), and each reposition of redundant personnel stator (5) interval arrangement is in the circumference of annular entry (22), the one end of reposition of redundant personnel stator (5) is keeping away from annular entry (22) pan feeding end (51), and the other end is discharge end (52); the rotary drum feeding device is characterized in that the distance between the top edge of the feeding end (51) and the bottom wall of the rotary drum accommodating cavity (2) is smaller than the distance between the top edge of the discharging end (52) and the bottom wall of the rotary drum accommodating cavity (2), and the rotary drum feeding device is used for enabling the feeding end (51) to intercept a part of rotary feed liquid (6) and simultaneously enabling a part of rotary feed liquid (6) to pass over the top of the feeding end (51).

2. Centrifugal extractor mixing structure according to claim 1, wherein the top edge of the diverting vane (5) is a smooth bevel edge, and the distance between the top edge of the diverting vane (5) and the bottom wall of the drum receiving chamber (2) increases gradually in the direction from the feed end (51) to the discharge end (52).

3. The centrifugal extractor mixing structure according to claim 1 or 2, wherein the inner wall surface of the annular inlet (22) is circular, and the included angle between the tangent corresponding to each discharge end (52) and the tangent corresponding to the corresponding part of the annular inlet (22) is not more than 30 degrees; or the inner wall surface of the annular inlet (22) is regular polygon, and the included angle between the tangent corresponding to each discharge end (52) and the corresponding side of the regular polygon is not more than 30 degrees.

4. Centrifugal extractor mixing structure according to claim 1 or 2, characterized in that a plurality of mixing protrusions (502) are arranged on the side of the flow dividing guide vane (5), each mixing protrusion (502) being arranged at intervals in the extending direction of the flow dividing guide vane (5) for turbulence of the feed liquid (6) to promote the mixing effect when the feed liquid (6) flows along the flow dividing guide vane (5).

5. The centrifugal extractor mixing structure of claim 4 wherein the mixing lobes are circular lobes.

6. Centrifugal extractor mixing structure according to claim 1 or 2, characterized in that a number of flow-through holes (503) are arranged on the side of the flow-dividing guide vane (5), each flow-through hole (503) being arranged at intervals in the direction of extension of the flow-dividing guide vane (5) for the feed liquid (6) to pass through when the feed liquid (6) flows along the flow-dividing guide vane (5) for improving the mixing effect.

7. Centrifugal extractor mixing structure according to claim 1 or 2, characterized in that the bottom wall of the drum accommodating chamber (2) is further provided with a guide vane (4), the guide vane (4) is isolated between the annular inlet (22) and the feed inlet (3) or the blanking port of the spiral pre-mixing channel, and a raised part (41) is arranged on the guide vane (4) at a part beside the feed inlet (3) or the blanking port for preventing the feed liquid (6) from splashing when the feed liquid (6) falls to the bottom wall of the drum accommodating chamber (2) from impacting on the drum.

8. Centrifugal extractor mixing structure according to claim 7, wherein the guide vanes (4) are only arranged in the vicinity of the position where the feed liquid (6) falls to the bottom wall of the drum receiving chamber (2).

9. Centrifugal extractor mixing structure according to claim 7, characterized in that the guide vane (4) has a tip extending to the annular inlet (22), the guide vane (4) is provided with a recess (42) of lower height at a position corresponding to the feed end (51) of the diverting vane (5) in the circumferential direction, and the part between the recess (42) and the tip of the guide vane (4) forms a diverting vane (5).

10. Centrifugal extractor mixing structure according to claim 1 or 2, characterized in that the bottom wall of the drum receiving chamber (2) is also provided with an inclined transition plate (21), the inclined transition plate (21) being located at the underside of the feed opening (3) or the blanking opening of the spiral pre-mixing channel for buffering the impact of the lower blanking liquid (6).