A centrifugal extractor housing with a double helical flow channel and a centrifugal extractor

Abstract

This utility model relates to a centrifugal extractor housing with a double-helix flow channel and a centrifugal extractor, belonging to the technical field of centrifugal extractor technology. It solves the problem of poor extraction effect due to mixing intensity in special materials / emulsifiable systems. The centrifugal extractor of this utility model includes: a housing body, a first liquid inlet, a second liquid inlet, a first spiral channel, and a second spiral channel; the first liquid inlet communicates with the first spiral channel, and the second liquid inlet communicates with the second spiral channel; both the first and second spiral channels are disposed inside the housing body, and the liquid material to be mixed flows out from the ends of the first and second spiral channels and can be mixed at the bottom of the inner cavity of the housing body. This utility model achieves efficient control of the mixing intensity of the material, ensuring sufficient mixing while avoiding over-emulsification.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal extraction technology, and in particular to a centrifugal extraction machine housing with a double helix flow channel and a centrifugal extraction machine. Background Technology

[0002] Centrifugal extractors are a new type of liquid-liquid extraction equipment based on the principle of efficient drum rotation. Their core function lies in utilizing the powerful centrifugal force generated by the rotating drum to rapidly mix and separate two immiscible materials of different densities. Due to their speed and efficiency, this equipment has been widely used in various fields such as chemical engineering, new energy, pharmaceuticals, and environmental protection.

[0003] In practical applications, materials are usually mixed in the feeding section when they enter the centrifugal extractor. The required mixing intensity varies depending on the material. If the mixing intensity is not appropriate, it will affect the centrifugal extraction effect.

[0004] Existing centrifugal extractors lack corresponding product designs for applications requiring relatively weak mixing intensity. For example, patent CN201810913345.4 discloses a top-suspended, low-power, low-shear liquid-liquid centrifugal extractor with a coaxially arranged shell and drum. The lower shaft end of the drum is suspended inside the shell, and a material mixing cylinder is provided on the outer bottom surface of the shell, coaxially arranged with the drum and communicating with the interior of the shell. The outer side of the mixing cylinder has an inlet for the material to be extracted and an inlet for the extractant arranged tangentially along the mixing cylinder. However, this product cannot solve the problem of difficult separation of easily emulsified materials caused by the multiple mixing stages, and cannot avoid emulsification problems caused by excessive mixing intensity after mixing two materials.

[0005] Therefore, this invention provides a centrifugal extractor with a double helical flow channel to achieve effective control of the mixing intensity of materials during centrifugal extraction. Utility Model Content

[0006] Based on the above analysis, this utility model aims to provide a centrifugal extractor with a double helical flow channel to solve the problem of poor extraction effect of existing centrifugal extractors for special materials / emulsifiable systems due to mixing intensity.

[0007] The objective of this utility model is mainly achieved through the following technical solutions:

[0008] A centrifugal extractor housing with a double helical flow channel includes: a housing body, a first liquid inlet, a second liquid inlet, a first helical channel, and a second helical channel;

[0009] The first liquid inlet and the second liquid inlet are located on the outside of the shell body and are used to introduce the liquid material to be mixed into the shell body;

[0010] The first liquid inlet is connected to the first spiral channel, and the second liquid inlet is connected to the second spiral channel;

[0011] The first and second spiral channels are both located inside the shell body, and the liquid materials to be mixed can be mixed at the bottom of the inner cavity of the shell body after flowing out from the ends of the first and second spiral channels.

[0012] Furthermore, the first spiral channel is formed by the inner wall surface of the shell body and the first spiral curved panel disposed on the inner wall of the shell body; the second spiral channel is formed by the inner wall surface of the shell body and the second spiral curved panel disposed on the inner wall of the shell body.

[0013] Furthermore, the first spiral channel and the second spiral channel are spiral pipes disposed inside the shell body.

[0014] Furthermore, a first blocking part and / or a second blocking part are provided inside the first spiral channel and / or the second spiral channel; the first blocking part and / or the second blocking part can be used to control the flow rate of liquid material in the first spiral channel and / or the second spiral channel.

[0015] Furthermore, the first blocking part is a first blocking plate disposed in the first spiral channel; the second blocking part is a second blocking plate disposed in the second spiral channel; both the first blocking plate and the second blocking plate are porous plate structures.

[0016] Furthermore, the first and / or second barrier plates are straight plate structures.

[0017] Alternatively, the first and / or second barrier plates may be curved panel structures.

[0018] Furthermore, the first blocking part is a first guide plate disposed in the first spiral channel, and the first guide plate is used to divert the material in the first spiral channel; the second blocking part is a second guide plate disposed in the second spiral channel, and the second guide plate is used to divert the material in the second spiral channel.

[0019] Furthermore, an anti-foaming structure is provided at the bottom of the shell body.

[0020] A centrifugal extractor comprising the centrifugal extractor housing with the aforementioned double helical flow channel.

[0021] It is worth noting that this utility model only describes the improved design of the existing centrifugal extractor. The structure that achieves the centrifugal extraction function in the same way as the existing equipment is not described in this utility model and does not affect the implementation of this utility model.

[0022] The technical solution of this utility model can achieve at least one of the following effects:

[0023] 1. This utility model discloses a centrifugal extractor with a double helical flow channel, which is designed for materials that are easily emulsified or foamy. It reduces the mixing time and mixing intensity of the two phases, ensuring that the two phases do not come into contact after entering the centrifugal extractor until they are at the bottom of the shell body, where they mix for the first time. On the one hand, it reduces the mixing time; on the other hand, by reducing the flow rate of the two phases, it reduces the shear force, thereby reducing the mixing intensity of the two phases and improving the extraction effect of the centrifugal extractor.

[0024] 2. The present invention provides a centrifugal extractor with a double spiral channel, which uses a baffle plate or guide plate set in the first spiral channel and the second spiral channel as a blocking part to limit the flow rate of liquid material in the first spiral channel and the second spiral channel. This can control the flow rate of material when it flows into the bottom of the shell body, thereby reducing the shear force when the two materials are mixed and in contact.

[0025] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the description and accompanying drawings, which are particularly pointed out. Attached Figure Description

[0026] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0027] Figure 1 This is a top view of a centrifugal extractor with a double helix flow channel according to Embodiment 1 of this utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of a centrifugal extractor with a double helix flow channel according to Embodiment 1 of this utility model;

[0029] Figure 3 This is a schematic diagram of the internal structure of a centrifugal extractor with a double helix flow channel according to Embodiment 2 of this utility model;

[0030] Figure 4 This is a schematic diagram of the structure of a centrifugal extractor with a double helix flow channel according to Embodiment 3 of this utility model - the blocking part is a straight plate;

[0031] Figure 5 A top view of a centrifugal extractor with a double helical flow channel according to Embodiment 3 of this utility model - the blocking part is a straight plate;

[0032] Figure 6 A top view of a centrifugal extractor with a double helical flow channel according to Embodiment 3 of this utility model - the blocking part is a curved panel;

[0033] Figure 7 This is a top view of a centrifugal extractor with a double helix flow channel, which is embodiment 4 of this utility model.

[0034] Figure label:

[0035] 1-Shell body; 2-First liquid inlet; 3-Second liquid inlet; 4-First spiral channel; 5-Second spiral channel; 6-First spiral curved panel; 7-Second spiral curved panel; 8-First baffle plate; 9-Second baffle plate; 10-First guide plate; 11-Second guide plate; 12-First spiral branch channel; 13-Second spiral branch channel; 14-Third spiral branch channel; 15-Fourth spiral branch channel. Detailed Implementation

[0036] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0037] Example 1

[0038] A specific embodiment of this utility model discloses a centrifugal extractor housing with a double helix flow channel, such as... Figure 1 and Figure 2 As shown, the system includes: a shell body 1, a first liquid inlet 2, a second liquid inlet 3, a first spiral channel 4, and a second spiral channel 5. The first liquid inlet 2 and the second liquid inlet 3 are located on the outside of the shell body 1 and are used to introduce liquid materials to be mixed into the shell body 1. The first liquid inlet 2 is connected to the first spiral channel 4, and the second liquid inlet 3 is connected to the second spiral channel 5, but the first spiral channel 4 and the second spiral channel 5 are not connected. The first spiral channel 4 and the second spiral channel 5 are both located inside the shell body 1, and the liquid materials to be mixed can be mixed at the bottom of the inner cavity of the shell body 1 after flowing out from the ends of the first spiral channel 4 and the second spiral channel 5. In this embodiment, by setting the first spiral channel 4 and the second spiral channel 5 to introduce two kinds of materials to be mixed respectively, the two phases of materials do not come into contact after entering the centrifugal extractor until they are first mixed at the bottom of the shell body 1. This reduces the mixing time and mixing intensity of the two phases of materials, avoids emulsification caused by over-mixing, and improves the extraction effect of the centrifugal extractor.

[0039] It should be noted that the material can be a liquid or a liquid containing solids or gases; no limitation is made on the material in this embodiment.

[0040] In this embodiment, the flow rate of the material can be further reduced and the mixing intensity decreased by lowering the height of the first inlet 2 and the second inlet 3. Alternatively, the height of the first inlet 2 and the second inlet 3 can be increased to suit material systems that require short mixing times but high mixing intensity.

[0041] In this embodiment, the location of the first liquid inlet 2 and the second liquid inlet 3 is not limited, and can be set as needed in actual application.

[0042] Or, such as Figure 1 As shown, the first liquid inlet 2 and the second liquid inlet 3 are respectively located on both sides of the shell body 1; by setting the liquid inlets of the two materials distributed on both sides of the shell body 1, it is convenient to connect multiple devices to each other.

[0043] Furthermore, such as Figure 2 As shown, in this embodiment, the first liquid inlet 2 and the second liquid inlet 3 are at the same height on the shell body 1.

[0044] Furthermore, the first spiral channel 4 is formed by the inner wall surface of the shell body 1 and the first spiral curved panel 6 disposed on the inner wall of the shell body 1; the second spiral channel 5 is formed by the inner wall surface of the shell body 1 and the second spiral curved panel 7 disposed on the inner wall of the shell body 1.

[0045] Preferably, the angle between the first helical curved panel 6 and the inner wall surface of the shell body 1 is no greater than 60°; similarly, the angle between the second helical curved panel 7 and the inner wall surface of the shell body 1 is no greater than 60°. In this embodiment, by setting the angle between the helical curved panel and the shell body 1, the material accumulates at the bottom of the angle, which facilitates the material having a defined flow position in the first helical channel 4 and the second helical channel 5.

[0046] In this embodiment, as Figure 2 As shown, the V-shaped flow channel formed between the first spiral curved panel 6 and the inner wall surface of the shell body 1 is the first spiral channel 4, and the V-shaped flow channel formed between the second spiral curved panel 7 and the inner wall surface of the shell body 1 is the second spiral channel 5.

[0047] In this embodiment, the shell body 1 is provided with a first liquid inlet 2 and a second liquid inlet 3, which are arranged along the circumferential direction of the shell body 1; in the vertical direction, the height of the first liquid inlet 2 is the same as the height of the second liquid inlet 3, the first liquid inlet 2 is connected to the first spiral channel 4, and the second liquid inlet 3 is connected to the second spiral channel 5.

[0048] In other words, the first material flows into the first spiral channel 4 between the inner wall of the shell body 1 and the first spiral curved panel 6 through the first liquid inlet 2, and the second material flows into the second spiral channel 5 between the second spiral curved panel 7 and the inner wall of the shell body 1 through the second liquid inlet 3; after centrifugation extraction of the two materials through the first spiral channel 4 and the second spiral channel 5, they flow out from the ends of the first spiral channel 4 and the second spiral channel 5, and then flow into the bottom of the shell body 1 for mixing.

[0049] It should be noted that in this embodiment, the length of the first helical curved panel 6 can be adjusted by adjusting the pitch of the first helical curved panel 6. A larger pitch results in a shorter length of the first helical curved panel 6, and a smaller pitch results in a longer length. A longer first helical curved panel 6 takes longer for the material to reach the bottom of the shell body 1, thus reducing the flow velocity and shear force. Conversely, a shorter first helical curved panel 6 takes less time for the material to reach the bottom of the shell body 1, resulting in a faster flow velocity and increased shear force. Similarly, the length of the second helical curved panel 7 can be adjusted by adjusting the pitch of the second helical curved panel 7.

[0050] In this embodiment, by adjusting the pitch of the first spiral curved panel 6 and / or the second spiral curved panel 7, the flow rate of the two materials to be mixed when they reach the bottom of the shell body 1 is adjusted, thereby controlling the shear force, adjusting the mixing effect, and improving the extraction effect.

[0051] Example 2

[0052] like Figure 3 As shown, the centrifugal extractor housing with a double-helix flow channel in this embodiment differs from that in Embodiment 1 in that the heights of the first inlet 2 and the second inlet 3 are different in the vertical direction. In this embodiment, increasing the inlet height enhances the mixing shear force. The height difference between the inlets of the two materials can also be controlled according to actual needs, so that the material with the higher inlet has a faster flow rate, increasing its feed rate per unit time, thereby controlling the mixing ratio of the two phases.

[0053] In this embodiment, by setting the height of the first liquid inlet 2 and the height of the second liquid inlet 3 to be different, the time for centrifugal extraction of two different types of materials to be mixed into the bottom of the shell body 1 before mixing can be controlled, thereby enabling controllable adjustment of the state of the two materials before mixing according to the mixing requirements of different materials.

[0054] Example 3

[0055] The centrifugal extractor housing with a double helix flow channel in this embodiment differs from that in Embodiment 1 or Embodiment 2 in that:

[0056] In this embodiment, a first blocking part is provided inside the first spiral channel 4, and a second blocking part is provided inside the second spiral channel 5. The first blocking part and the second blocking part are respectively used to control the flow rate of liquid material in the first spiral channel 4 and the second spiral channel 5.

[0057] Specifically, in this embodiment, a first blocking part is provided between the first spiral curved panel 6 and the shell body 1, and a second blocking part is provided between the second spiral curved panel 7 and the shell body 1; by providing the first blocking part and the second blocking part, the flow rate of the material can be adjusted, and the shear force of the two phases of the material can be controlled when the material reaches the bottom of the shell body 1.

[0058] Furthermore, such as Figure 4 , Figure 5 , Figure 6 As shown, the first blocking part is a first blocking plate 8 disposed in the first spiral channel 4; the second blocking part is a second blocking plate 9 disposed in the second spiral channel 5; both the first blocking plate 8 and the second blocking plate 9 are porous plate structures.

[0059] Specifically, in one implementation of this embodiment, such as Figure 4 , Figure 5 As shown, the first blocking plate 8 and / or the second blocking plate 9 are straight plate structures vertically arranged on the inner wall surface of the shell body 1.

[0060] Specifically, the bottom surface of the straight plate structure is connected to the upper surface of the first spiral curved panel 6 / second spiral curved panel 7; or, the side surface of the straight plate structure is connected to the inner wall surface of the shell body 1; or, the side surface of the straight plate structure is connected to the inner wall surface of the shell body 1 while the bottom surface of the straight plate structure is connected to the upper surface of the first spiral curved panel 6 / second spiral curved panel 7.

[0061] Specifically, in another implementation of this embodiment, such as Figure 6 As shown, the first blocking plate 8 and / or the second blocking plate 9 are curved panel structures disposed on the inner wall surface of the shell body 1.

[0062] Specifically, the bottom surface of the curved panel structure is connected to the upper surface of the first spiral curved panel 6 / second spiral curved panel 7; or, the side surface of the curved panel structure is connected to the inner wall surface of the shell body 1; or, the side surface of the curved panel structure is connected to the inner wall surface of the shell body 1 while the bottom surface of the curved panel structure is connected to the upper surface of the first spiral curved panel 6 / second spiral curved panel 7.

[0063] Specifically, in this embodiment, the curved panel structure can be an arc-shaped curved panel, a fan-shaped curved panel, or an S-shaped curved panel. These will not be listed one by one in this embodiment. By setting the blocking part as a curved panel, the number of openings can be increased, which is beneficial for defoaming.

[0064] In this embodiment, both the first and second blocking parts are blocking plates, each with multiple through holes for material flow and foam elimination. The number and position of the blocking plates can be set according to actual needs; they can be positioned between the first helical curved panel 6 and the shell body 1, or between the second helical curved panel 7 and the shell body 1. Similarly, the number and installation position of the first and second blocking parts can be set according to actual needs.

[0065] In this embodiment, by setting a perforated baffle plate as a blocking part, the flow rate of the centrifugally extracted material in the first spiral channel 4 or the second spiral channel 5 can be buffered, the speed of the two materials when they are mixed at the bottom of the shell body 1 can be controlled, excessive impact between the two can be avoided, and the material extraction effect can be improved.

[0066] Furthermore, such as Figure 4 As shown, a defoaming structure 16 is provided at the bottom of the shell body 1. Specifically, the defoaming structure 16 is a porous plate-like structure provided at the bottom outlet of the shell body 1, used to eliminate foam in the mixture after centrifugal extraction.

[0067] Example 4

[0068] The difference between this embodiment and embodiment 3 is that in this embodiment, a guide plate disposed on the first spiral curved panel 6 and / or the second spiral curved panel 7 is used as a blocking part.

[0069] like Figure 7 As shown, the first blocking part is a first guide plate 10 disposed on the first spiral curved panel 6, and the second blocking part is a second guide plate 11 disposed on the second spiral curved panel 7.

[0070] Specifically, such as Figure 7 As shown, the first guide plate 10 and the second guide plate 11 are spirally arranged along the upper surface of the first spiral curved panel 6 and the second spiral curved panel 7; the first guide plate 10 can divide the first spiral channel 4 into two sub-channels: the first spiral branch channel 12 and the second spiral branch channel 13; the second guide plate 11 divides the second spiral channel 5 into two sub-channels: the third spiral branch channel 14 and the fourth spiral branch channel 15.

[0071] It should be noted that the number and length of the guide vanes can be set according to actual needs. There is no limit to the number of first guide vanes 10 set in the first spiral channel 4, and there is no limit to the number of second guide vanes 11 set in the second spiral channel 5.

[0072] In this embodiment, by setting the first guide plate 10 and / or the second guide plate 11 as the blocking part of the first spiral channel 4 and / or the second spiral channel 5, the material can be guided to promote the centrifugal extraction effect. On the other hand, the flow rate of the liquid before the material flows into the bottom of the shell body 1 for mixing can be controlled, reducing the shear force when the liquid flows meet and improving the extraction mass transfer effect.

[0073] Example 5

[0074] The difference between this embodiment and Embodiments 1, 2, 3, and 4 is as follows:

[0075] The first spiral channel 4 and the second spiral channel 5 are spiral pipes located inside the shell body 1 and are not connected to each other.

[0076] Compared with the prior art, the technical solution provided in this embodiment can ensure that the two easily emulsified liquid materials to be mixed do not come into contact before flowing out of the spiral channel, thereby fully avoiding the emulsification phenomenon of the two materials and ensuring the stability of the centrifugal extraction effect.

[0077] It is worth noting that when the blocking part is installed in the spiral channel of this embodiment, the entire blocking part is set inside the spiral channel and is connected to the inner wall of the spiral channel.

[0078] Example 6

[0079] A centrifugal extractor that differs from existing centrifugal extractors in that:

[0080] Centrifugal extractor housing with a double helical flow channel as described in Example 1, Example 2, Example 3, Example 4, or Example 5.

[0081] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A centrifugal extractor housing of double helical flow channel, characterized in that, include: Shell body (1), first liquid inlet (2), second liquid inlet (3), first spiral channel (4), and second spiral channel (5); The first liquid inlet (2) and the second liquid inlet (3) are located on the outside of the shell body (1) for introducing the liquid material to be mixed into the shell body (1); The first liquid inlet (2) is connected to the first spiral channel (4), and the second liquid inlet (3) is connected to the second spiral channel (5); The first spiral channel (4) and the second spiral channel (5) are both located inside the shell body (1), and the liquid material to be mixed can be mixed at the bottom of the inner cavity of the shell body (1) after flowing out from the ends of the first spiral channel (4) and the second spiral channel (5).

2. The centrifugal extractor housing of twin-spiral flow channels according to claim 1, characterized in that, The first spiral channel (4) is formed by the inner wall surface of the shell body (1) and the first spiral curved panel (6) disposed on the inner wall of the shell body (1); the second spiral channel (5) is formed by the inner wall surface of the shell body (1) and the second spiral curved panel (7) disposed on the inner wall of the shell body (1).

3. The double helical flow centrifugal contactor housing of claim 1 wherein, The first spiral channel (4) and the second spiral channel (5) are spiral pipes disposed inside the shell body (1).

4. The double helical flow centrifugal contactor housing according to any one of claims 1 to 3, wherein, The first spiral channel (4) and / or the second spiral channel (5) are provided with a first blocking part and / or a second blocking part; the first blocking part and / or the second blocking part can be used to control the flow rate of liquid material in the first spiral channel (4) and / or the second spiral channel (5).

5. The double helical flow centrifugal contactor housing of claim 4 wherein, The first blocking part is a first blocking plate (8) disposed in the first spiral channel (4); the second blocking part is a second blocking plate (9) disposed in the second spiral channel (5); both the first blocking plate (8) and the second blocking plate (9) are porous plate structures.

6. The double helical flow centrifugal contactor housing of claim 5 wherein, The first blocking plate (8) and / or the second blocking plate (9) are straight plate structures.

7. The double helical flow centrifugal contactor housing of claim 5 wherein, The first blocking plate (8) and / or the second blocking plate (9) are curved panel structures.

8. The centrifugal extractor housing of twin helical flow paths according to claim 4, wherein, The first blocking part is a first guide plate (10) disposed in the first spiral channel (4), and the first guide plate (10) is used to divert the material in the first spiral channel (4); the second blocking part is a second guide plate (11) disposed in the second spiral channel (5), and the second guide plate (11) is used to divert the material in the second spiral channel (5).

9. The double helical flow centrifugal extractor housing according to any of claims 1-3, 5-8, characterized in that, The bottom of the shell body (1) is provided with a defoaming structure (16).

10. A centrifugal extractor characterized in that, A centrifugal extractor housing comprising the double helical flow channel as described in any one of claims 1-9.

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