Repeated mixing device for centrifugal extractor

Abstract

The utility model discloses a multi-time mixing device for a centrifugal extraction machine, which is characterized in that a mixing device is arranged on a rotary drum in an extraction machine shell, and a stirring blade and a feeding hole on the mixing device rotate along with the rotation of the rotary drum; the stirring blades are arranged in the mixing area, so that the mixed liquid before entering the mixing area of the rotary drum is primarily mixed by the stirring blades and then enters the mixing device to be mixed again, and multiple mixing of the mixed liquid is realized. According to the device disclosed by the invention, the material mixing device is arranged on the centrifugal extractor, the mixing degree required by material mixing is realized by utilizing multiple material mixing settings on the material mixing device, the mixing degree of material mixing is achieved without increasing the rotating speed of the material mixing device, low-speed material mixing of the material mixing device can be realized, the material mixing emulsification probability is reduced, and meanwhile, the use power consumption of the centrifugal extractor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal extractors, in particular to a multiple material mixing device for a centrifugal extractor. Background Art

[0002] Centrifugal extractor is a new, fast and efficient liquid-liquid mixing and separation equipment. The centrifugal extractor uses a motor to drive the drum to rotate at high speed. Two immiscible liquids with different densities complete the mixing and mass transfer under the action of the shear force generated by the rotation of the drum or blades, and are quickly separated under the action of the centrifugal force generated by the high-speed rotation of the drum. It is widely used in fine chemicals, pharmaceuticals, hydrometallurgy, petrochemicals, environmental protection, plant extraction and other industries.

[0003] Most industrial centrifugal extractors use the traditional mixed feed structure - the annular gap centrifugal extractor mixed feed structure. With the continuous development of centrifugal extraction technology and the continuous expansion of the industrial application field of centrifugal extractors, the traditional centrifugal extractor feed structure has gradually exposed the problems of high mixing intensity, difficulty in control, and high power consumption. If the mixing intensity is too high, the mixed liquid will emulsify, which is not conducive to the separation of the light phase and the heavy phase. However, if the mixing intensity is too low, it will affect the mixing degree of the mixture, making it impossible to perfectly separate the light phase and the heavy phase.

[0004] The patent number is CN208893673U, and its name is a centrifugal extractor mixing feeding device. It discloses a feeding device that uses the mixing intensity of the drum liquid to prevent the mixed liquid from emulsifying. However, in the initial mixing stage, it is still necessary to increase the mixing intensity to achieve the mixing degree of the mixed liquid. The possibility of emulsification of the mixed liquid is still relatively high, making the rotation speed of the feeding device difficult to control and the damage rate is also relatively high. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a multiple mixing device for a centrifugal extractor.

[0006] According to the technical solution provided in the embodiment of the present application, a multiple mixing device for a centrifugal extractor comprises an extractor housing and a drum arranged in the extractor housing, a rotating shaft is provided in the middle portion of the drum, the rotating shaft and the drum are rotated in the extractor housing through a transmission motor fixed on the extractor housing, a baffle is provided on the rotating shaft, a mixing device is fixed on the rotating shaft below the baffle, the middle portion of the mixing device is fixed through the lower end surface of the drum, a feed port and a stirring blade provided at the lower end portion of the mixing device are located in a mixing area between the drum and the extractor housing, a discharge port provided at the upper end portion of the mixing device is located in the drum, and the stirring blades and the feed port on the mixing device rotate with the rotation of the drum, so that the mixed liquid entering the mixing area before the drum undergoes initial mixing by the stirring blades and secondary mixing when entering the mixing device, thereby realizing multiple mixing of the mixed liquid.

[0007] Furthermore, the feed port is connected to the discharge port through the inner cavity of the mixing device, so that the mixed liquid in the mixing area can enter the drum.

[0008] Furthermore, an inclined blade is provided in the inner cavity of the mixing device for mixing the solution in the inner cavity of the mixing device.

[0009] Furthermore, a liquid mixing inlet is provided at the lower end of the extractor housing, and the liquid mixing inlet is communicated with the material mixing area.

[0010] Furthermore, a heavy phase outlet and a light phase outlet are provided at the upper end of the extractor shell, and the heavy phase outlet and the light phase outlet are respectively connected to different parts of the upper end surface of the drum to realize the collection of liquid-liquid separation in the drum.

[0011] Furthermore, radial blades are provided on the rotating shaft above the baffle.

[0012] In summary, the beneficial effects of the present application are as follows: the device of the present application is provided with a mixing device on the centrifugal extractor, and utilizes the multiple mixing settings on the mixing device to achieve the required mixing degree of the mixing, without increasing the rotation speed of the mixing device to achieve the mixing degree of the mixing, and can achieve low-speed mixing of the mixing device, reduce the probability of emulsification of the mixing, and at the same time reduce the power consumption of the centrifugal extractor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0014] Figure 1 This is a front cross-sectional structural diagram of the overall device of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the mixing device of the utility model;

[0016] Figure 3 It is a schematic cross-sectional view of the mixing device of the utility model.

[0017] The numbers in the figure are: extractor housing-1; mixing area-11; mixed liquid inlet-12; light phase outlet-13; heavy phase outlet-14; drum-2; rotating shaft-3; baffle-4; mixing device-5; feed inlet-51; stirring blade-52; discharge port-53; inclined blade-54. DETAILED DESCRIPTION

[0018] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] A multiple mixing device for a centrifugal extractor, such as Figure 1 As shown, a rotating drum 2 is arranged in an extractor housing 1, and a rotating shaft 3 is arranged on the rotating drum 2. The upper end of the rotating shaft 3 is fixedly passed through the middle part of the upper end surface of the rotating drum 2. The rotating shaft 3 is connected to a transmission motor fixed on the extractor housing 1, so that the rotating drum 2 rotates with the rotation of the rotating shaft 3. A baffle plate 4 is arranged at the lower end of the rotating shaft 3. The baffle plate 4 is located in the rotating drum 2. A mixing device 5 is fixedly connected to the rotating shaft 3 below the baffle plate 4. The mixing device 5 is fixedly passed through the middle part of the lower end surface of the rotating drum 2.

[0021] The gap between the mixing device 5 and the extractor housing 1 is a mixing area 11, which is connected to a mixed liquid inlet 12 provided at the lower end of the extractor housing 1. A heavy phase outlet 14 and a light phase outlet 13 are provided at the upper end of the extractor housing 1 for classifying and collecting the heavy phase liquid and the light phase liquid in the mixed liquid in the extractor housing 1.

[0022] like Figure 1 and Figure 2 As shown, the lower end of the mixing device 5 is provided with a feed port 51 and a stirring blade 52, and the upper end is provided with a discharge port 53, the feed port 51 and the discharge port 53 are both through holes on the side end surface of the mixing device 5, and the feed port 51 forms a circle, and the discharge port 53 forms a circle;

[0023] Combination Figure 1 and Figure 2 It can be seen that the feed port 51 and the stirring blade 52 are located below the drum 2, and the discharge port 53 is located inside the drum 2;

[0024] like Figure 3 As shown, the feed port 51 and the discharge port 53 are connected through the inner cavity of the mixing device 5, and an inclined blade 54 is provided on the inner wall of the inner cavity for stirring the mixed liquid in the inner cavity.

[0025] After the mixing device 5 is installed in the extractor housing 1 together with the drum 2, the transmission motor is started to make the drum 2 rotate together with the rotating shaft 3. At this time, the mixed liquid enters the mixing area 11 in the extractor housing 1 through the mixed liquid inlet 12. Since the rotating shaft 3 rotates together with the drum 2, the mixing device 5 will be driven to rotate. When the mixed liquid enters the mixing area 11, it will first be stirred and mixed by the stirring blades 52, and then enter the inner cavity of the mixing device 5 through the feed port 51. After entering the inner cavity, the mixed liquid will be mixed again due to the rotation of the inclined blades 54, so that the mixed liquid is mixed multiple times. With the continuous injection of the mixed liquid from the mixed liquid inlet 11, the height of the mixed liquid in the inner cavity of the mixing device 5 will become higher and higher until it flows out from the discharge port 53. The mixed liquid after flowing out will enter the drum 2, and the radial blades in the drum 2 will rotate to separate the light phase and the heavy phase, and then enter the light phase outlet 13 and the heavy phase outlet 14 from different outlets on the top surface of the drum 2 to flow out and be collected.

[0026] The above description is only an explanation of the preferred embodiments of the present application and the technical principles and other schemes used. At the same time, the scope of the invention involved in the present application is not limited to the technical scheme formed by a specific combination of the above technical features, but also should cover other technical schemes formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical scheme.

Claims

1. A multiple mixing device for a centrifugal extractor, comprising an extractor housing (1) and a drum (2) arranged in the extractor housing (1), wherein a rotating shaft (3) is provided in the middle of the drum (2), and the rotating shaft (3) and the drum (2) are rotated in the extractor housing (1) by a transmission motor fixed to the extractor housing (1), characterized in that: The rotating shaft (3) is provided with a baffle plate (4), and a mixing device (5) is fixedly provided on the rotating shaft (3) below the baffle plate (4); the middle portion of the mixing device (5) is fixedly passed through the lower end surface of the rotating drum (2); the feed port (51) and the stirring blade (52) provided at the lower end portion of the mixing device (5) are located in the mixing area (11) between the rotating drum (2) and the extractor housing (1); the discharge port (53) provided at the upper end portion of the mixing device (5) is located in the rotating drum (2); the stirring blade (52) and the feed port (51) on the mixing device (5) rotate with the rotation of the rotating drum (2), so that the mixed liquid in the mixing area (11) before entering the rotating drum (2) undergoes initial mixing by the stirring blade (52) and secondary mixing after entering the mixing device (5), thereby realizing multiple mixing of the mixed liquid.

2. A multiple mixing device for a centrifugal extractor according to claim 1, characterized in that: The feed port (51) is connected to the discharge port (53) through the inner cavity of the mixing device (5).

3. A multiple mixing device for a centrifugal extractor according to claim 2, characterized in that: An inclined blade (54) is provided in the inner cavity of the mixing device (5) for mixing the solution in the inner cavity of the mixing device (5).

4. The multi-mixing device for a centrifugal extractor according to claim 1, characterized in that: The lower end of the extractor housing (1) is provided with a liquid mixing inlet (12), and the liquid mixing inlet (12) is communicated with the material mixing area (11).

5. The multi-mixing device for a centrifugal extractor according to claim 1, characterized in that: The upper end of the extractor housing (1) is provided with a heavy phase outlet (14) and a light phase outlet (13), and the heavy phase outlet (14) and the light phase outlet (13) are respectively connected to different parts of the upper end surface of the rotary drum (2).

6. The multi-mixing device for a centrifugal extractor according to claim 1, characterized in that: The rotating shaft above the baffle plate (4) is provided with radial blades.

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