Extraction centrifugal machine

Abstract

The utility model discloses an extraction centrifugal machine, which belongs to the technical field of centrifugal machines and comprises an outer shell consisting of a mixing shell and a centrifugal part, a top cover is fixed at the top of the centrifugal part through a bolt, a central rod is arranged in the center of the centrifugal part, and paddles are connected to the periphery of the lower half part of the central rod. A surrounding round frame is connected to the inner top of the mixing shell, a plurality of liquid inlets are formed in the top of the mixing shell, a spiral piece is arranged in the center of the inner circumference of the surrounding round frame and matched with the surrounding round frame, a plurality of liquid overflowing openings are formed in the periphery of the upper half portion of the centrifugal part, the upper half portion of the centrifugal part is connected with an impurity filtering shell, and the impurity filtering shell is connected with the mixing shell. A light-phase liquid cavity is formed in the periphery of the center of the centrifugal part, and a liquid guide pipe is communicated between the light-phase liquid cavity and the centrifugal part. The extraction centrifugal machine not only has an auxiliary mixing effect, but also is beneficial to improving the extraction effect in the process of adding a precipitation filtering impurity to a heavy-phase liquid.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifuges, in particular to an extraction centrifuge. Background Technique

[0002] The centrifugal extractor is a new type, fast and efficient liquid-liquid mixing and separation equipment. The centrifugal extractor uses an electric motor to drive the drum to rotate at a high speed. Two liquids with different densities and immiscible with each other complete mixing and mass transfer under the action of the shear force generated by the rotation of the drum or impeller, 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 industries such as fine chemicals, pharmaceuticals, hydrometallurgy, petrochemicals, environmental protection, and plant extraction. The centrifugal extractor mainly includes two working processes, namely mixing and mass transfer and centrifugal separation. The centrifugal extractor can automatically and continuously complete the two processes of mixing and separation. The existing centrifuges lack a structure for auxiliary mixing during mixing, and there may be uneven mixing. Moreover, during separation, the heavy-phase liquid with a large density may contain a small amount of solid impurities, and the existing device lacks a design for separating fixed impurities.

[0003] An extraction centrifuge with a publication number of CN207592074U has a top cover detachably installed on the upper part of the outer shell. The feed pipe is installed on the top cover and extends into the drum. Rib plates are symmetrically arranged on the inner wall of the drum. Above the rib plates on the inner wall of the drum, a light-phase weir plate, a heavy-phase partition plate, and a central hole plate are installed in sequence from bottom to top. A heavy-phase weir plate is fixedly installed on the upper end surface of the drum. The central hole plate is detachably installed on the heavy-phase partition plate. A heavy-phase flow pipe is installed between the light-phase weir plate, the heavy-phase partition plate and the inner wall of the drum. A light-phase liquid outlet is provided on the drum. The bottom of the drum is fixedly connected to the main shaft, and the main shaft is driven by an electric motor through a transmission device, thereby realizing the function of convenient maintenance and cleaning. However, it still lacks the functions of auxiliary mixing and separating fixed impurities. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an extraction centrifuge to solve the problems raised in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An extraction centrifuge includes an outer shell body composed of a mixing shell and a centrifugal part. The top of the centrifugal part is bolt-fixed with a top cover, and a central rod is arranged at the center of the centrifugal part. The lower half of the central rod is peripherally connected with impellers. The inner top of the mixing shell is connected with a surrounding circular frame, and a plurality of liquid inlets are opened at the top of the mixing shell. The central part of the inner circumference of the surrounding circular frame is provided with a spiral sheet, and the spiral sheet is adapted to the surrounding circular frame. A plurality of overflow ports are opened on the outer circumference of the upper half of the centrifugal part, and a filter impurity shell is connected to the upper half of the centrifugal part. A light-phase liquid cavity is arranged on the outer circumference of the center of the centrifugal part, and a liquid guide pipe is communicated between the light-phase liquid cavity and the centrifugal part.

[0006] In a further embodiment, a rotating motor is installed at the center of the top of the top cover, and the driving end of the rotating motor penetrates through the top cover and is connected to the central rod through a coupling.

[0007] In a further embodiment, the bottom end of the central rod penetrates through the mixing shell to the central position, and the outer periphery of the lower half of the central rod is fixedly connected to the spiral blade.

[0008] In a further embodiment, a liquid cavity part is provided at the bottom position of the top cover and the top end of the central rod, and the liquid cavity part is communicated with a liquid guide pipe for guiding the light-phase liquid at the central position.

[0009] In a further embodiment, the impurity filtering shell is communicated with the overflow port, and a heavy-phase liquid port and a impurity discharge valve with a valve are respectively installed on one side and the bottom of the impurity filtering shell.

[0010] In a further embodiment, the top of the mixing shell and the bottom of the centrifugal part are fixed by bolts, and one-way valves are connected to both ends of the outer periphery of the mixing shell.

[0011] In a further embodiment, a light-phase liquid port for discharging the light-phase liquid is connected to the bottom of the light-phase liquid cavity.

[0012] In a further embodiment, the horizontal height of the overflow port is in the upper half of the impurity filtering shell.

[0013] Compared with the prior art, the technical effects and advantages of the present utility model are as follows:

[0014] The design around the circular cross-section inside the circular shell, the design of the spiral blade adapted to the inner circumference of the circular shell, the design of the connection between the spiral blade and the outer periphery of the bottom end of the central rod, and the design of the liquid rising port provided on the mixing shell. When different liquids are continuously input through the two liquid inlets, at the same time, the rotation of the central rod drives the spiral blade to rotate, and with the hydraulic pressure for stirring and conveying, the two liquids can be further mixed and input into the inside of the centrifugal part through the liquid rising port;

[0015] The design that the overflow port is in the upper half of the filtrate shell and is communicated. When the heavy-phase liquid is input into the filtrate shell, impurities with a larger density will sink to the bottom of the filtrate shell. When the heavy-phase liquid continues to be conveyed to the position of the heavy-phase liquid port, the heavy-phase liquid can be discharged, and by opening the impurity discharge valve, the impurities can be further discharged;

[0016] This extraction centrifuge not only has the function of assisting mixing, but also can add a process of sedimenting and filtering impurities to the heavy-phase liquid, which helps to improve the extraction effect. Description of the Drawings

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a central cross-sectional view of the present invention;

[0020] Figure 3 is of the present invention Figure 2 an enlarged view of the structure at A in;

[0021] Figure 4 is of the present invention Figure 2 an enlarged view of the structure at B in.

[0022] Explanation of reference numerals:

[0023] 1. Mixing shell; 2. Centrifugal part; 3. Top cover; 4. Rotating motor; 5. Central rod; 6. Blade; 7. Surrounding circular frame; 8. Spiral sheet; 9. Liquid inlet; 10. Overflow port; 11. Impurity filtering shell; 12. Heavy-phase liquid port; 13. Impurity discharge valve; 14. Liquid lifting port; 15. Light-phase liquid cavity; 16. Light-phase liquid port; 17. Liquid guide pipe. Specific embodiments

[0024] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some well-known technical features in the art are not described.

[0025] Unless otherwise defined, the up, down, left, right, front, back, inner, and outer directions involved in this article are based on the up, down, left, right, front, back, inner, and outer directions in the drawings shown in the present invention, and are hereby explained together.

[0026] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., depending on actual needs.

[0027] Please refer to Figures 1 to 4, The general structure of the device body includes a mixing shell 1, a centrifugal part 2, a top cover 3, and a rotating motor 4. The top of the mixing shell 1 is a conical surface. Concave and convex engaging parts are respectively provided at the top edge of the mixing shell 1 and the bottom edge of the centrifugal part 2, and the concave and convex engaging parts are fixed by bolts. The top cover 3 is embedded and bolted to the top of the centrifugal part 2. The bottom of the rotating motor 4 is fixed to the center of the top of the top cover 3. The driving end of the rotating motor 4 penetrates the top cover 3 and is connected with a central rod 5 through a coupling. A plurality of blades 6 are connected to the lower half of the outer periphery of the central rod 5;

[0028] When the rotating motor 4 operates, it drives the central rod 5 and the blades 6 to rotate at high speed. Two liquids with different densities and immiscible with each other complete mixing and mass transfer under the action of the shear force generated by the rotation of the blades 6, and are quickly separated under the action of the centrifugal force generated by the high-speed rotation of the drum. The heavy-phase liquid with a high density (including solid impurities) will move towards the inner wall of the centrifugal part 2, and the low-density liquid is in the center to achieve separation.

[0029] Please refer to Figure 2 and Figure 3 , In order to achieve auxiliary mixing, liquid inlets 9 are connected to both ends of the outer periphery of the mixing shell 1. One-way valves are provided at the ends of the liquid inlets 9 to allow liquid to only enter the inside of the mixing shell 1. The setting of the two liquid inlets 9 enables two different liquids to be input into the inside of the mixing shell 1;

[0030] An around circular frame 7 is connected to the inner top of the mixing shell 1. The inner periphery of the around circular frame 7 has a circular cross-section design. A plurality of liquid lifting ports 14 are opened at the inner top of the mixing shell 1. The liquid lifting ports 14 facilitate the mixed liquid to enter the inside of the centrifugal part 2. The bottom end of the central rod 5 penetrates the mixing shell 1 and is at the center. A spiral blade 8 is connected to the part of the outer periphery of the central rod 5 inside the around circular frame 7. The rotation of the spiral blade 8 will generate a spiral force, which can convey the liquid upward.

[0031] Please refer to Figures 2 to 4 , In order to achieve separation, a liquid cavity part is opened at the center of the bottom of the top cover 3. The liquid cavity part is at the center position. A light-phase liquid cavity 15 is provided in the central area of the centrifugal part 2. The bottom of the light-phase liquid cavity 15 is connected to a light-phase liquid outlet 16. A liquid guide pipe 17 is connected between the liquid cavity part and the light-phase liquid outlet 16;

[0032] A plurality of overflow ports 10 are opened in the upper half of the centrifugal part 2. A filter impurity shell 11 is connected to the part of the centrifugal part 2 where the plurality of overflow ports 10 are located. The horizontal height of the overflow ports 10 is in the upper half of the filter impurity shell 11. The upper half of the outside of the centrifugal part 2 is connected to a heavy-phase liquid outlet 12. The bottom of the centrifugal part 2 is connected to a waste discharge valve 13, and the waste discharge valve 13 is provided with a valve that can be opened and closed.

[0033] The above components and electrical equipment are all prior art or currently achievable technologies. Their working principles, dimensions, and models are irrelevant to the functions of this application, so no further description will be given, and they are all controlled by a remote control switch.

[0034] Working principle

[0035] When this extraction centrifuge is in use, two different liquids are input into the interior of the mixing shell 1 through the liquid inlet 9. The rotating motor 4 is started to drive the central rod 5 to rotate, causing the paddle blades 6 to rotate. At the same time, the central rod 5 drives the spiral sheet 8 to rotate, realizing spiral liquid lifting. Combined with continuous input, the mixing of the two liquids can be further achieved.

[0036] When the mixed liquid enters the centrifugal part 2, under the action of the centrifugal force generated by the high-speed rotation of the paddle blades 6, it is quickly separated. The heavy-phase liquid with a higher density will move towards the inner wall of the centrifugal part 2, and the light-phase liquid with a lower density is in the center to achieve separation.

[0037] The heavy-phase liquid enters the interior of the impurity filtering shell 11 through the overflow port 10. If there are impurities in the liquid, the impurities will precipitate at the bottom of the impurity filtering shell 11. When the heavy-phase liquid covers the heavy-phase liquid outlet 12, it can be discharged. The light-phase liquid with a lower density is input into the interior of the light-phase liquid cavity 15 through the liquid cavity part and the liquid guide pipe 17, and then discharged through the light-phase liquid outlet 16.

[0038] It should be noted that in this article, relational terms such as "one" and "two" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extraction centrifuge, comprising a housing composed of a mixing shell (1) and a centrifugal part (2), a top cover (3) is bolted to the top of the centrifugal part (2), and a central rod (5) is arranged at the center of the centrifugal part (2); It is characterized in that: A paddle (6) is connected to the outer periphery of the lower half of the central rod (5), a surrounding circular frame (7) is connected to the inner top of the mixing shell (1), and a plurality of liquid rising ports (14) are formed in the top of the mixing shell (1). A spiral sheet (8) is arranged at the center of the inner periphery of the surrounding circular frame (7), and the spiral sheet (8) is adapted to the surrounding circular frame (7). A plurality of overflow ports (10) are formed in the outer periphery of the upper half of the centrifugal part (2), and a filter impurity shell (11) is connected to the upper half of the centrifugal part (2). A light-phase liquid cavity (15) is arranged on the outer periphery of the center of the centrifugal part (2), and a liquid guide pipe (17) is communicated between the light-phase liquid cavity (15) and the centrifugal part (2).

2. The extraction centrifuge according to claim 1, wherein: A rotating motor (4) is installed at the center of the top of the top cover (3), and the driving end of the rotating motor (4) penetrates through the top cover (3) and is connected to the central rod (5) through a coupling.

3. The extraction centrifuge according to claim 1, wherein: The bottom end of the central rod (5) penetrates through the mixing shell (1) to the central position, and the outer periphery of the lower half of the central rod (5) is fixedly connected to the spiral sheet (8).

4. The extraction centrifuge according to claim 3, characterized in that: A liquid cavity part is formed at the top end of the central rod (5) and the bottom of the top cover (3), and the liquid cavity part is communicated with the liquid guide pipe (17) for guiding the light-phase liquid at the central position.

5. The extraction centrifuge according to claim 1, wherein: The filter impurity shell (11) is communicated with the overflow port (10), and a heavy-phase liquid port (12) and a waste discharge valve (13) with a valve are respectively installed on one side and the bottom of the filter impurity shell (11).

6. The extraction centrifuge according to claim 1, characterized in that: The top of the mixing shell (1) and the bottom of the centrifugal part (2) are fixed by bolts, and one-way valve-equipped liquid inlets (9) are connected to both ends of the outer periphery of the mixing shell (1).

7. The extraction centrifuge according to claim 1, characterized in that: The bottom of the light-phase liquid cavity (15) is connected with a light-phase liquid port (16) for discharging the light-phase liquid.

8. An extraction centrifuge according to claim 1, characterized in that: The horizontal height of the overflow port (10) is in the upper half of the filter impurity shell (11).

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