CN215195520U - Centrifugal extraction machine and one-key type extraction system with same - Google Patents

Abstract

The utility model belongs to the technical field of the extraction, concretely relates to centrifugal extractor and key formula extraction system who has this extractor, including the vertical tubular casing that sets up on the base, the top of casing is equipped with motor power, the coaxial rotary drum that is provided with in the casing, the upper end of rotary drum and motor power's output shaft, be equipped with heavy phase cofferdam and light phase cofferdam between the lateral wall of rotary drum and the inner wall of casing, wherein heavy phase cofferdam is located the upper portion of light phase cofferdam, constitutes heavy phase liquid collection chamber between the inner wall of heavy phase cofferdam and casing, constitutes light phase liquid collection chamber between the inner wall of light phase cofferdam and casing; the weir bottom of the heavy phase cofferdam is in an inclined posture with a high position at one side and a low position at the other side, and a heavy phase liquid outlet pipe communicated to the outside of the machine shell is arranged at the low position weir bottom of the heavy phase cofferdam; the weir bottom of the light phase cofferdam is in an inclined posture with a high position at one side and a low position at the other side, and a light phase liquid outlet pipe communicated to the outside of the shell is arranged at the low position weir bottom of the light phase cofferdam.

Description

Centrifugal extraction machine and one-key type extraction system with same

Technical Field

The utility model belongs to the technical field of the extraction, concretely relates to centrifugal extraction machine and have a key formula extraction system of this extraction machine.

Background

Extraction is used as an important unit process for separating and purifying substances, the technology of the extraction is rapidly developed, and the application range is wider and wider. The centrifugal solvent extraction method has the advantages of high efficiency, high phase separation speed, tightness, continuity and the like, and is widely applied to the fields of petrochemical industry, wet metallurgy, fine chemical industry, biology, pharmacy and the like. The centrifugal extractor is used as a core device of a centrifugal solvent extraction method, and is innovated and developed from a structural type to technical parameters.

However, in the existing extractor, the extracted material liquid needs to be discharged from the extractor, but due to the structural problem, the extracted material liquid is accumulated in the extractor, after the discharge port is opened, the material liquid flows out of the extractor, and part of the material liquid is deposited at the bottom of the extractor and cannot flow out smoothly, so that the subsequent use of the extractor is seriously affected, and a solution is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an one of which is to provide a centrifugal extractor, accomplishes the extraction back at the extractor, and the feed liquid in the extractor of being convenient for flows under the effect of gravity, avoids the feed liquid to produce the deposit in the extractor.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a centrifugal extractor comprises a cylindrical shell vertically arranged on a base, wherein a power motor is arranged at the top of the shell, a rotary drum is coaxially arranged in the shell, the upper end of the rotary drum is connected with an output shaft of the power motor, a heavy phase cofferdam and a light phase cofferdam are arranged between the side wall of the rotary drum and the inner wall of the shell, the heavy phase cofferdam is positioned at the upper part of the light phase cofferdam, a heavy phase liquid collecting cavity is formed between the heavy phase cofferdam and the inner wall of the shell, and a light phase liquid collecting cavity is formed between the light phase cofferdam and the inner wall of the shell; the weir bottom of the heavy phase cofferdam is in an inclined posture with a high position at one side and a low position at the other side, and a heavy phase liquid outlet pipe communicated to the outside of the machine shell is arranged at the low position weir bottom of the heavy phase cofferdam; the weir bottom of the light phase cofferdam is in an inclined posture with a high position at one side and a low position at the other side, and a light phase liquid outlet pipe communicated to the outside of the shell is arranged at the low position weir bottom of the light phase cofferdam; the inclination directions of the heavy phase cofferdam and the light phase cofferdam are opposite; the bottom of the casing is also provided with a heavy phase inlet, a light phase inlet and a residual liquid outlet which are communicated with the inner cavity of the rotary drum.

Preferably, the tube bodies of the heavy phase liquid outlet tube and the light phase liquid outlet tube are tangent to the side wall of the casing; the tube core directions of the heavy phase liquid outlet tube and the light phase liquid outlet tube are obliquely arranged on the shell, wherein liquid inlets of the heavy phase liquid outlet tube and the light phase liquid outlet tube, which are positioned on the inner wall of the shell, are both at a high position, and liquid outlets outside the shell are both at a low position.

Preferably, the heavy phase cofferdam comprises a heavy phase vertical plate and a heavy phase bottom plate which are arranged in a surrounding manner along the circumferential direction of the rotary drum and form an annular structure, an included angle is formed between the plate surface of the heavy phase vertical plate and the side wall of the rotary drum to form an inclined surface, one side edge of the heavy phase vertical plate at the upper position is close to the side wall of the rotary drum, and one side edge of the heavy phase vertical plate at the lower position is connected with the heavy phase bottom plate connected to the inner wall of the machine shell; the heavy phase vertical plate and the heavy phase bottom plate are in arc transition, and the lowest position of the plate surface of the heavy phase bottom plate is higher than the inner side inlet position of the heavy phase liquid outlet pipe.

Preferably, the light phase cofferdam comprises a light phase vertical plate and a light phase bottom plate which are arranged in a surrounding manner along the circumferential direction of the rotary drum and form an annular structure, an included angle is formed between the plate surface of the light phase vertical plate and the side wall of the rotary drum to form an inclined plane, one side edge of the light phase vertical plate at the upper position is close to the side wall of the rotary drum, and one side edge of the light phase vertical plate at the lower position is connected with the light phase bottom plate connected to the inner wall of the machine shell; the light phase vertical plate and the light phase bottom plate are in arc transition, and the lowest position of the plate surface of the light phase bottom plate is higher than the inner side inlet position of the light phase liquid outlet pipe.

Preferably, a gas-liquid mixing cavity is arranged between the top of the rotary drum and the shell, a cleaning device is arranged in the gas-liquid mixing cavity and comprises an annular cleaning pipe and a cleaning pipe orifice, and the cleaning pipe orifice is communicated with the annular cleaning pipe, an external cleaning agent source and a purging gas source; the pipe wall of the annular cleaning pipe is provided with nozzles which are arranged at equal intervals, the nozzles are arranged in an upper row and a lower row on the annular cleaning pipe, and the outlet directions of the nozzles point to the inner wall of the shell; the diameter of the annular cleaning pipe is larger than that of the rotary drum; and a liquid level sensor is arranged in the gas-liquid mixing cavity.

Another technical object of the utility model is to provide a key formula extraction system realizes the full automatic control of extraction in-process, can realize the extraction process of deciding for oneself after the system starts, avoids artifical the participation.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a one-touch extraction system, comprising the centrifugal extractor; the system also comprises a heavy phase source, a light phase source, a heavy phase collecting device and a light phase collecting device which are connected with the extractor through pipelines, wherein the heavy phase source is connected with a heavy phase inlet of the extractor, the light phase source is connected with a light phase inlet of the extractor, the heavy phase collecting device is connected with a heavy phase liquid outlet pipe of the extractor, and the light phase collecting device is connected with a light phase liquid outlet pipe of the extractor; the system also comprises a detection unit, wherein the detection unit comprises liquid level meters respectively arranged on the heavy phase source and the light phase source;

a heavy phase inlet valve is arranged on a pipeline between the heavy phase source and the extractor, and a light phase inlet valve is arranged on a pipeline between the light phase source and the extractor; and a heavy phase outlet valve is arranged on a pipeline between the heavy phase collecting device and the extracting machine, and a light phase outlet valve is arranged on a pipeline between the light phase collecting device and the extracting machine.

Preferably, a heavy phase feed pump, a heavy phase flowmeter and a heavy phase regulating valve are sequentially arranged on a pipeline between the heavy phase source and the heavy phase inlet valve along the flow direction of the heavy phase feed liquid; and a light phase feed pump, a light phase flowmeter and a light phase regulating valve are sequentially arranged on a pipeline between the light phase source and the light phase inlet valve along the flow direction of the light phase feed liquid.

Preferably, the system also comprises a washing liquid collecting device and an accident collecting device which are connected with a residual liquid outlet of the extraction machine through pipelines; a washing liquid outlet valve is arranged on a pipeline connecting the washing liquid collecting device and the extraction machine, and a residual liquid emptying valve is arranged on a pipeline connecting the accident collecting device and the extraction machine; a liquid inlet of the accident collecting device is connected with the heavy phase liquid outlet pipe through a pipeline, and a heavy phase initial material valve is arranged on the pipeline between the heavy phase liquid outlet pipe and the heavy phase liquid outlet pipe; a liquid outlet of the accident collecting device is connected to the heavy phase inlet through a pipeline, and a mixed liquid outlet valve is arranged on the pipeline between the heavy phase inlet and the heavy phase inlet; and a sensor is also arranged at the outlet of the heavy phase liquid outlet pipe.

Preferably, a mixed liquid output pump is arranged between the liquid outlet of the accident collecting device and the mixed liquid outlet valve, a branch pipeline on a pipeline between the mixed liquid output pump and the mixed liquid outlet valve is connected to the liquid inlet of the accident collecting device, and a mixed liquid circulating valve is arranged on the branch pipeline.

Preferably, liquid level meters are arranged on the heavy phase collecting device, the light phase collecting device, the washing liquid collecting device and the accident collecting device, and output pumps are arranged at liquid outlets of the heavy phase collecting device, the light phase collecting device and the washing liquid collecting device;

preferably, liquid inlets of the heavy phase collecting device, the light phase collecting device, the washing liquid collecting device and the accident collecting device have height difference with a liquid outlet corresponding to the extracting machine, and the liquid outlet corresponding to the extracting machine is positioned at a high position;

the diameters of the valve cores of the heavy phase outlet valve and the heavy phase initial material valve are larger than or equal to the diameter of the heavy phase liquid outlet pipe in the extraction machine, and the diameter of the valve core of the light phase outlet valve is larger than or equal to the diameter of the light phase liquid outlet pipe in the extraction machine;

the system also comprises a cleaning agent source and a purging gas source which are connected to the cleaning pipe orifice of the extraction machine through pipelines, and a cleaning agent inlet valve is arranged on a connecting pipeline of the cleaning agent source and the cleaning pipe orifice, and a purging gas inlet valve is arranged on a connecting pipeline of the purging gas source and the cleaning pipe orifice.

The beneficial effects of the utility model reside in that:

1) the weir bottom of the heavy phase cofferdam is in an inclined posture with a high position at one side and a low position at the other side, so that the heavy phase liquid collecting cavity is in an inclined posture with a high position at one side and a low position at one side, the extracted heavy phase liquid is guided out of the extractor in the inclined heavy phase liquid collecting cavity by the heavy phase liquid outlet pipe at the low position weir bottom, the inclined heavy phase liquid collecting cavity is more beneficial to the outflow of the heavy phase liquid from the extractor, and the outflow efficiency of the heavy phase liquid is improved; similarly, the inclined light-phase liquid collecting cavity is more beneficial to the light-phase liquid to flow out of the light-phase liquid outlet pipe of the extractor, so that the outflow efficiency of the light-phase liquid is improved;

2) the rotary drum rotates at a high speed in the shell, light-phase liquid and heavy-phase liquid obtained after extraction are respectively gathered in the light-phase liquid collecting cavity and the heavy-phase liquid collecting cavity, when the rotary drum rotates, the light-phase liquid and the heavy-phase liquid generate tangential speeds along with the rotation of the rotary drum, and the heavy-phase liquid and the light-phase liquid can flow out conveniently, and pipe bodies of the heavy-phase liquid outlet pipe and the heavy-phase liquid outlet pipe are tangent to the side wall of the shell; the tube core directions of the heavy phase liquid outlet pipe and the light phase liquid outlet pipe are obliquely arranged on the shell, wherein liquid inlets on the inner wall of the shell and the liquid outlets outside the shell are both at a high position and at a low position, namely the heavy phase liquid outlet pipe and the light phase liquid outlet pipe are obliquely arranged on the shell, so that the light phase liquid and the heavy phase liquid can flow out of the shell under the action of self gravity;

3) after the extraction is accomplished, start belt cleaning device, cleaner import valve is opened this moment, and during the cleaner got into the extraction machine by the mouth of pipe that washs, level sensor real-time supervision in the extraction machine liquid level change of cleaner, when the liquid level reached the default, cleaner import valve was closed, and the cleaner source stops to provide the cleaner, and after the cleaner washs the completion, the purge gas import valve was opened, and the purge gas got into in the annular scavenge pipe and sweeps in the extraction machine. The cleanness of the extractor is ensured so as to be convenient for the next use;

4) after the extraction starting program is started, the system realizes automatic interlocking control of the processes of a self-checking stage, an extraction or washing or back extraction stage, a parking stage, a residual liquid treatment stage and a cleaning stage, transition among the processes does not need manual participation, and meanwhile, in the working process of each stage, relevant working data are collected and calculated, program logic control is realized, online parameter setting can also be carried out, so that the automatic and intelligent operation of the extraction system is realized, and the datamation of the operation process is realized.

Drawings

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

FIG. 2 is a top view of a centrifugal extractor;

FIG. 3 is a schematic diagram of an extraction system.

Detailed Description

For the sake of understanding, the specific structure and operation of the present invention will be further described with reference to the accompanying drawings.

The utility model discloses a key formula extraction system mainly comprises parts such as extractor 10, the control unit, detecting element, heavy phase unit, light phase unit, heavy phase collecting element, light phase collecting element, lotion collecting element, accident collecting element, cleaning unit, explains below respectively.

In order to realize the intellectualization of the function of the extraction system, a control unit is arranged in the system, and it is noted that the control unit in the utility model is only a hardware platform formed by connecting physical components together through a circuit structure. In use, the control unit may cooperate with software known in the art to perform the functions of the extraction system. But it must be noted that: the software matched with the control unit is not the innovation part of the utility model, and is not the component part of the utility model.

The extractor 10 comprises a cylindrical casing 20 vertically arranged on a base 11, the top of the casing 20 is provided with a power motor 30, a rotary drum 21 is coaxially arranged in the casing 20, the upper end of the rotary drum 21 is connected with an output shaft of the power motor 30, a heavy phase cofferdam 22 and a light phase cofferdam 23 are arranged between the side wall of the rotary drum 21 and the inner wall of the casing 20, wherein the heavy phase cofferdam 22 is positioned at the upper part of the light phase cofferdam 23, a heavy phase liquid collecting cavity is formed between the heavy phase cofferdam 22 and the inner wall of the casing 20, and a light phase liquid collecting cavity is formed between the light phase cofferdam 23 and the inner wall of the casing 20; the weir bottom of the heavy phase cofferdam 22 is in an inclined posture with a high position at one side and a low position at the other side, and a heavy phase liquid outlet pipe 221 communicated to the outside of the machine shell 20 is arranged at the low position weir bottom of the heavy phase cofferdam 22; the weir bottom of the light phase cofferdam 23 is in an inclined posture with a high position at one side and a low position at the other side, and a light phase liquid outlet pipe 231 communicated to the outside of the machine shell 20 is arranged at the low position weir bottom of the light phase cofferdam 23; the inclination directions of the heavy phase cofferdam 22 and the light phase cofferdam 23 are opposite; the bottom of the casing 20 is also provided with a heavy phase inlet 222, a light phase inlet 232 and a residual liquid outlet 24 which are communicated with the inner cavity of the rotary drum 21. The weir bottom of the heavy phase cofferdam 22 is in an inclined posture with a high position at one side and a low position at the other side, so that the heavy phase liquid collecting cavity is in an inclined posture with a high position at one side and a low position at one side, the extracted heavy phase liquid is guided out of the extractor 10 in the inclined heavy phase liquid collecting cavity by the heavy phase liquid outlet pipe 221 at the low position weir bottom, the inclined heavy phase liquid collecting cavity is more beneficial to the outflow of the heavy phase liquid from the extractor 10, and the outflow efficiency of the heavy phase liquid is improved; similarly, the inclined light-phase liquid collection cavity is more favorable for the light-phase liquid to flow out of the light-phase liquid outlet pipe 231 of the extractor 10, so that the outflow efficiency of the light-phase liquid is improved. Meanwhile, the inclination directions of the heavy phase cofferdam 22 and the light phase cofferdam 23 are opposite, so that the outlet directions of the heavy phase liquid outlet pipe 221 and the light phase liquid outlet pipe 231 are opposite.

Because the rotary drum 21 rotates at a high speed in the casing 20, the light-phase liquid and the heavy-phase liquid obtained after extraction are respectively gathered in the light-phase liquid collecting cavity and the heavy-phase liquid collecting cavity, when the rotary drum 21 rotates, the light-phase liquid and the heavy-phase liquid generate tangential speeds along with the rotation of the rotary drum 21, and in order to facilitate the outflow of the light-phase liquid and the heavy-phase liquid, the pipe bodies of the heavy-phase liquid outlet pipe 221 and the light-phase liquid outlet pipe 231 are all tangent to the side wall of the casing 20. The tube core directions of the heavy phase liquid outlet pipe 221 and the light phase liquid outlet pipe 231 are both obliquely arranged on the casing 20, wherein liquid inlets of the heavy phase liquid outlet pipe 221 and the light phase liquid outlet pipe 231 on the inner wall of the casing 20 are both at a high position, and liquid outlets outside the casing 20 are both at a low position, that is, the heavy phase liquid outlet pipe 221 and the light phase liquid outlet pipe 231 are obliquely arranged on the casing 20, which is beneficial for the light phase liquid and the heavy phase liquid to flow out from the casing 20 under the action of self gravity.

In addition, the heavy phase cofferdam 22 includes a heavy phase vertical plate 223 and a heavy phase bottom plate 224 which are circumferentially arranged along the circumferential direction of the rotating drum 21 and form an annular structure, an included angle is formed between the plate surface of the heavy phase vertical plate 223 and the side wall of the rotating drum 21 and forms an inclined surface, one side edge of the heavy phase vertical plate 223 at the upper position is close to the side wall of the rotating drum 21, and one side edge of the heavy phase vertical plate 223 at the lower position is connected with the heavy phase bottom plate 224 connected to the inner wall of the machine shell 20, so as to enclose a heavy phase liquid collection cavity in an inclined posture. The heavy phase vertical plate 223 and the heavy phase bottom plate 224 are in arc transition, so that smooth circulation of liquid in the heavy phase liquid collecting cavity is guaranteed, and meanwhile, the lowest position of the plate surface of the heavy phase bottom plate 224 is higher than the inner side inlet position of the heavy phase liquid outlet pipe 221, so that the liquid can completely flow out in the heavy phase liquid collecting cavity without residue.

Similarly, the light phase cofferdam 23 includes a light phase vertical plate 233 and a light phase bottom plate 234 which are circumferentially arranged along the circumferential direction of the rotating drum 21 and form an annular structure, the plate surface of the light phase vertical plate 233 and the side wall of the rotating drum 21 form an included angle and form an inclined plane, one side of the light phase vertical plate 233 at the upper position is close to the side wall of the rotating drum 21, and one side of the light phase vertical plate 233 at the lower position is connected with the light phase bottom plate 234 connected to the inner wall of the casing 20, so as to enclose a light phase liquid collecting cavity in an inclined posture. The light phase vertical plate 233 and the light phase bottom plate 234 are in arc transition, so that smooth circulation of liquid in the light phase liquid collecting cavity is ensured, and meanwhile, the lowest position of the plate surface of the light phase bottom plate 234 is higher than the inner side inlet position of the light phase liquid outlet pipe 231, so that the liquid can be completely discharged in the light phase liquid collecting cavity without residue.

After the extractor 10 finishes the extraction work, the inner walls of the drum 21 and the casing 20 need to be cleaned to ensure the cleanness of the extractor 10 for the next use. A gas-liquid mixing cavity 26 is arranged between the top of the rotary drum 21 and the shell 20, a cleaning device is arranged in the gas-liquid mixing cavity 26 and comprises an annular cleaning pipe 25 and a cleaning pipe opening 251, and the cleaning pipe opening 251 is communicated with the annular cleaning pipe 25, an external cleaning agent source and a purging gas source; the pipe wall of the annular cleaning pipe 25 is provided with nozzles 252 which are arranged at equal intervals, the nozzles 252 are arranged in an upper row and a lower row on the annular cleaning pipe 25, and the outlet directions of the nozzles 252 all point to the inner wall of the machine shell 20; the diameter of the annular cleaning pipe 25 is larger than that of the rotary drum 21; a liquid level sensor 261 is provided in the gas-liquid mixing chamber 26. When the extraction of the extractor 10 is completed, and the light phase liquid and the heavy phase liquid completely flow out from the interior of the casing 20, the material liquid remains on the outer wall of the rotary drum 21 and the inner wall of the casing 20, so after the extraction is completed, the cleaning device is started, at this time, the heavy phase outlet valve 56a and the light phase outlet valve 54 are closed, the cleaning agent inlet valve 252 is opened, the cleaning agent enters the extractor 10 from the cleaning pipe opening 251, the liquid level sensor 261 in the extractor 10 monitors the liquid level change of the cleaning agent in the extractor 10 in real time, when the liquid level reaches a preset value, the cleaning agent inlet valve 252 is closed, the cleaning agent source stops providing the cleaning agent, the extractor 10 is started, and the extractor is operated at a preset low rotation speed for a preset time; when the running time reaches, the extractor 10 is stopped, the residual liquid outlet 24 is opened, the cleaning agent in the extractor 10 flows out, and the residual liquid outlet valve 56 is closed after the residual liquid is emptied; and repeating the above cleaning steps, and after the preset cleaning times are reached, opening the residual liquid outlet valve 56 and the purge gas inlet valve 253, and allowing the purge gas to enter the annular cleaning pipe 25 and purge the interior of the extractor 10.

Control unit, detection unit: the detection unit detects various data in the system and transmits the detection data to the control unit, and the control unit receives the detection data, processes the detection data and sends out a control signal to control each component to work. The control unit sends out control signals to control the work of all parts in the system, and further realizes the automatic control of the system.

Heavy phase unit: the device comprises a heavy phase source 31 connected with a heavy phase inlet 222 of the extractor 10 through a pipeline, wherein a heavy phase feed pump 61, a heavy phase flow meter 62, a heavy phase regulating valve 63 and a heavy phase inlet valve 51 are sequentially arranged on the pipeline between the heavy phase source 31 and the heavy phase inlet 222 along the flow direction of heavy phase feed liquid. In this embodiment, the heavy phase source 31 is in the form of a storage tank, and a liquid outlet of the heavy phase source 31 is located at the bottom of the tank, so that the feed liquid can flow out of the tank conveniently. The heavy phase source 31 is provided with a liquid level meter 40 for detecting liquid level, the liquid level meter 40 detects the liquid level height in the heavy phase source 31 to obtain a liquid level detection signal and transmits the liquid level detection signal to the control unit, the control unit judges whether the heavy phase feed liquid in the heavy phase source 31 is in a material state or not according to the liquid level detection signal, when the heavy phase source 31 is in the material state, the extraction machine 10 needs to supply materials, and the control unit controls the heavy phase regulating valve 63 to be opened and the heavy phase feed pump 61 to be started to pump and supply materials; when the heavy phase source 31 is in a material-free state, the control unit sends out a reminding signal to remind personnel to feed the heavy phase source 31, after feeding is completed, the heavy phase source 31 is in a material-available state, at the moment, the control unit removes the reminding signal and starts feeding normally.

Light phase unit: the device comprises a light phase source 32 connected with a light phase liquid outlet pipe 231 of the extractor 10 through a pipeline, wherein a light phase feeding pump 64, a light phase flowmeter 65, a light phase adjusting valve 66 and a light phase inlet valve 52 are sequentially arranged on the pipeline between the light phase source 32 and a light phase inlet 232 along the flow direction of light phase feed liquid. In this embodiment, the light phase source 32 is also in the form of a storage tank, the liquid outlet of the light phase source 32 is located at the bottom of the storage tank, the liquid level meter 40 for detecting the liquid level is disposed on the light phase source 32, and the working principle and process of the liquid level meter 40 in the light phase source 32 are the same as those of the liquid level meter 40 in the heavy phase source 31 in the heavy phase unit, which is not described in detail.

If the feeding mode adopted by the heavy phase source 31 and the light phase source 32 is high-level self-flow feeding, that is, the liquid outlets of the heavy phase source 31 and the light phase source 32 have a height difference with the liquid inlets correspondingly connected with the extractor 10, and the liquid inlets corresponding to the extractor 10 are located at a low level, and the heavy phase feed liquid and the light phase feed liquid can flow into the extractor 10 under the action of self gravity, the heavy phase feeding pump 61 and the light phase feeding pump 64 can be eliminated.

Heavy phase collection unit: including connecting heavy phase collection device 33 and accident collection device 36 on the heavy phase drain pipe 221 of extractor 10 through the pipeline, the pipeline includes main line and branch pipeline, the main line is drawn forth from heavy phase drain pipe 221, be provided with sensor 2211 on the main line, sensor 2211 detects whether there is heavy phase liquid to flow out in the main line, and with signal transmission to the control unit in, the control unit carries out identification process to the signal, also can detect the outflow of heavy phase liquid through detection equipment such as conductivity meter or flow detector. Along the flow direction of the heavy phase, the main pipeline behind the sensor 2211 is branched into branch pipelines which respectively lead to the heavy phase collecting device 33 and the accident collecting device 36, a heavy phase outlet valve 53 is arranged on the branch pipeline which leads to the heavy phase collecting device 33, and the opening and closing of the heavy phase outlet valve 53 controls whether the raffinate heavy phase liquid flowing out of the heavy phase liquid outlet pipe 221 flows to the heavy phase collecting device 33; in addition, a heavy phase initial charge valve 56a is provided in the line leading to the accident collecting device 36. The heavy phase collection device 33 and the accident collection device 36 are both embodied in the form of tanks in this embodiment.

The liquid level meter 40 is arranged on the heavy phase collecting device 33 and the accident collecting device 36. The accident collecting device 36 is also connected to the residual liquid outlet 24 via a pipe, and a residual liquid emptying valve 56 is provided on the pipe between the two. In addition, the liquid outlet of the accident collecting device 36 is connected to the heavy phase inlet 222 through a pipeline, the pipeline includes two parts, one part is a main mixed liquid output pipeline provided with a mixed liquid output pump 67, the main mixed liquid output pipeline behind the mixed liquid output pump 67 is branched into two sub mixed liquid output pipelines, one sub mixed liquid output pipeline is connected to the heavy phase inlet 222, and the other sub mixed liquid output pipeline is connected to the liquid inlet at the upper part of the accident collecting device 36, so that the liquid in the accident collecting device 36 can form self circulation, and the phenomenon that the liquid is layered in the accident collecting device 36 by light phase and heavy phase is avoided. Meanwhile, a mixed liquid outlet valve 56b and a mixed liquid circulating valve 56c are respectively arranged on the two mixed liquid output branch pipelines.

Light phase collection unit: the device comprises a light phase collecting device 34 connected with a light phase liquid outlet pipe 231 of the extraction machine 10 through a pipeline, a light phase outlet valve 54 is arranged on the pipeline between the light phase collecting device and the light phase collecting device 34, the light phase collecting device is in a storage tank form, and a liquid level meter 40 is also arranged on a tank body and used for detecting the liquid level state in the tank body.

A washing liquid collection unit: comprises a washing liquid collecting device 35 connected with the residual liquid outlet 24 of the extractor 10 through a pipeline, a washing liquid outlet valve 55 is arranged on the pipeline between the washing liquid collecting device 35 and the extractor, the washing liquid collecting device 35 is in the form of a storage tank, and a liquid level meter 40 is also arranged on the tank body and is used for detecting the liquid level state in the tank body.

In order to facilitate the liquid drainage of each collecting device, the heavy phase collecting device 33, the light phase collecting device 34 and the washing liquid collecting device 35 are provided with output pumps 68 at the liquid outlets, and the output pumps 68 are arranged at the bottom positions of the collecting devices to ensure the complete drainage of the liquid in the tank. When the liquid level meters 40 in the heavy phase collecting device 33, the light phase collecting device 34 and the washing liquid collecting device 35 detect that the liquid material contained in one or more of the collecting devices is in a full liquid state, the control unit sends out a control signal for starting the corresponding output pump 68 after recognizing the full liquid signal, and the corresponding output pump 68 starts to work to discharge the liquid material in the tank body; after the material liquid in the tank is discharged, when the liquid level meter 40 detects that the material liquid state held by the collecting device is not full, a not full signal is transmitted to the control unit, and the control unit controls the corresponding output pump 68 to stop working, so that safety interlocking is realized, and idle running of the output pump 68 is avoided.

An accident collection unit: that is, the accident collecting device 36 mentioned in the above description is included, and will not be described in detail.

A cleaning unit: the device comprises a cleaning agent source and a purging gas source which are connected to a cleaning pipe opening 251 of the extraction machine 10 through pipelines, wherein a cleaning agent inlet valve is arranged on a connecting pipeline of the cleaning agent source and the cleaning pipe opening 251, and a purging gas inlet valve is arranged on a connecting pipeline of the purging gas source and the cleaning pipe opening 251. After the extraction of the extractor 10 is completed and the light-phase liquid and the heavy-phase liquid completely flow out of the casing 20, the material liquid remains on the outer wall of the rotary drum 21 and the inner wall of the casing 20, so that after the extraction is completed, the cleaning device is started to clean, and the cleanness of the extractor 10 is ensured so as to be used next time.

In addition, when the positions of the components are set, the liquid inlets of the heavy phase collecting device 33, the light phase collecting device 34, the washing liquid collecting device 35 and the accident collecting device 36 have a height difference with the liquid outlet correspondingly connected with the extractor 10, and the liquid outlet corresponding to the extractor 10 is located at a high position, so that the feed liquid can enter the corresponding collecting device along the pipeline under the action of gravity, and meanwhile, the residue in the pipeline is also prevented.

The diameters of the valve cores of the heavy phase outlet valve 53 and the heavy phase initial material valve 56a are larger than or equal to the diameter of the heavy phase liquid outlet pipe 221 in the extraction machine 10, and the diameter of the valve core of the light phase outlet valve 54 is larger than or equal to the diameter of the light phase liquid outlet pipe 231 in the extraction machine, so that the problems that liquid outlet is unsmooth due to resistance of the diameter of the valve cores, phase balance damage is caused, and phase separation is unclear are avoided.

The extraction process for a one-touch extraction system is described below, and generally employs three feed modes during operation of extractor 10: firstly, heavy phase is advanced and then light phase is advanced; second, the light phase is advanced and then the heavy phase is advanced; and thirdly, the light phase and the heavy phase are fed at the same time, and when the method is applied, the light phase occupies most after the first advanced heavy phase is used, and the best extraction effect can be achieved by the working mode. The following explains a working mode of the advanced heavy phase and the subsequent light phase, a human-computer interaction interface is arranged in the extraction system, an operator controls the system through the human-computer interaction interface to set or modify the flow, parameters and the like in the system, a starting program is arranged in the control unit, and the method comprises the following steps after the program is started to run:

1) self-checking stage

The control unit controls the heavy phase inlet valve 51, the light phase inlet valve 52, the heavy phase initial material valve 56a, the washing liquid outlet valve 55, the mixed liquid outlet valve 56b, the mixed liquid circulating valve 56c, the cleaning agent inlet valve 252 and the purge gas inlet valve 253 to be closed, the light phase outlet valve 54 and the heavy phase outlet valve 53 to be opened, and the heavy phase feeding pump 61, the light phase feeding pump 64, the mixed liquid output pump 67 and the output pump 68 to be closed; the liquid level meters 40 in the heavy phase source 31 and the light phase source 32 transmit liquid level detection signals of the heavy phase source 31 and the light phase source 32 to the control unit, the control unit judges whether the heavy phase source 31 and the light phase source 32 are in a material state, the liquid level meters 40 on the heavy phase collecting device 33, the light phase collecting device 34, the washing liquid collecting device 35 and the accident collecting device 36 transmit the liquid level detection signals of all the collecting devices to the control unit, and the control unit judges whether all the collecting devices are in an underfill state;

2) extraction or washing or stripping stages

In this stage, three extraction stages, i.e. washing stage or stripping stage, are disclosed in this embodiment, but the present invention is not limited to these three stages, and those skilled in the art can arrange other steps according to the actual requirement.

After the self-checking stage is completed, the extractor 10 is automatically started and reaches a preset rotating speed, the heavy phase outlet valve 53 is closed, the heavy phase inlet valve 51, the light phase inlet valve 52 and the heavy phase initial material valve 56a are opened, the heavy phase regulating valve 63 is opened to the minimum opening degree, the heavy phase feeding pump 61 is opened, heavy phase feed liquid flows through the heavy phase inlet 222 from the heavy phase source 31 through a pipeline and enters the extractor 10, when a sensor 2211 at the outlet of the heavy phase liquid outlet pipe 221 detects a liquid outlet signal and transmits the liquid outlet signal to the control unit, the control unit recognizes the liquid outlet signal and controls the light phase inlet valve 52 and the light phase feeding pump 64 to be opened, and light phase feed liquid flows through the light phase inlet 232 from the light phase source 32 through a pipeline and enters the extractor 10; when the light phase and the heavy phase in the extractor 10 reach phase equilibrium, the heavy phase initial material valve 56a is closed, the heavy phase outlet valve 53 is opened, and the heavy phase and the light phase in the extractor 10 respectively flow to the residual liquid collecting device 33 and the light phase collecting device 34 through pipelines;

3) parking phase

When the stop signal is triggered, the control unit controls the light phase feeding pump 64 to stop, the light phase inlet valve 52 to close, the heavy phase feeding pump 61 to stop and the heavy phase inlet valve 51 to close, when the sensor 2211 at the outlet of the heavy phase liquid outlet pipe 221 detects that no liquid is discharged, the control unit transmits a liquid discharge signal to the control unit, and the control unit identifies the liquid discharge signal and controls the extractor 10 to automatically reduce the speed until the operation is stopped;

4) stage of raffinate treatment

After the extractor 10 stops running, the control unit controls the opening of the residual liquid emptying valve 56, residual liquid in the extractor 10 flows into the accident collecting device 36 through a pipeline until the residual liquid is emptied, and the residual liquid emptying valve 56 is closed under the action of the control unit;

5) cleaning phase

The control unit controls the heavy phase outlet valve 53 to be closed, the light phase outlet valve 54 to be closed and the cleaning agent inlet valve 252 to be opened, cleaning agent enters the extractor 10 from the cleaning pipe opening 251, a cleaning agent liquid level signal in the extractor 10 is transmitted to the control unit, the control unit compares the cleaning agent liquid level signal with a preset value, when the cleaning agent liquid level signal reaches the preset value, the control unit controls the cleaning agent inlet valve 252 to be closed, and the control unit controls the extractor 10 to be started and to run at a preset low rotating speed for a preset time; after the running time is up, the extractor 10 is stopped, the control unit controls the opening of the residual liquid emptying valve 56, the cleaning agent in the extractor 10 flows into the washing liquid collecting device 35 until the residual liquid is emptied, and the residual liquid emptying valve 56 is closed under the action of the control unit; and repeating the cleaning steps, and after the preset cleaning times are reached, controlling the residual liquid emptying valve 56 and the purge gas inlet valve 253 to be opened by the control unit, wherein the purge gas enters the annular cleaning pipe 25 and purges the extractor 10, and the purge gas is usually clean compressed air or nitrogen.

In the extraction or washing or stripping stage of the above steps, before the light phase and the heavy phase reach phase equilibrium, the mixed liquid of the heavy phase and the light phase flows out from the heavy phase liquid outlet pipe 221 and enters the accident collecting device 36. In the extraction or washing or back-extraction stage, after the light phase and the heavy phase reach phase balance, the internal circulation of the accident collection device 36 reaches the preset circulation time, the mixed liquid outlet valve 56b is opened, the mixed liquid circulating valve 56c is closed, the heavy phase inlet valve 51 is closed, and the mixed liquid in the accident collection device 36 enters the extractor 10 through the heavy phase inlet 222; when the liquid level detection signal of the liquid level meter 40 on the accident collection device 36 is in a non-full state, the mixed liquid output pump 67 is closed, the mixed liquid outlet valve 56b is closed, the heavy phase inlet valve 51 and the heavy phase feeding pump 61 are opened, and the system is automatically switched to the heavy phase source 31 for feeding. In the working process of the system, when the extractor 10 fails to work, which causes abnormal stop, the control unit controls the residual liquid emptying valve 56 to open, and the mixed liquid in the extractor 10 is discharged into the accident collecting device 36 through the residual liquid outlet 24.

In the self-test phase of the above-described procedure, when the liquid level detection signal of the level gauge 40 of the trouble collection device 36 is in a full liquid state, the mixed liquid circulation valve 56c is opened, the mixed liquid output pump 67 is started, and the mixed liquid in the trouble collection device 36 is internally circulated.

Claims (10)

1. The utility model provides a centrifugal extraction machine, includes vertical setting casing (20) of tube-shape on base (11), the top of casing (20) is equipped with motor power (30), coaxial drum (21) that is provided with in casing (20), the upper end of drum (21) is connected with the output shaft of motor power (30), its characterized in that: a heavy phase cofferdam (22) and a light phase cofferdam (23) are arranged between the side wall of the rotary drum (21) and the inner wall of the casing (20), wherein the heavy phase cofferdam (22) is positioned at the upper part of the light phase cofferdam (23), a heavy phase liquid collecting cavity is formed between the heavy phase cofferdam (22) and the inner wall of the casing (20), and a light phase liquid collecting cavity is formed between the light phase cofferdam (23) and the inner wall of the casing (20); the weir bottom of the heavy phase cofferdam (22) is in an inclined posture with a high position at one side and a low position at the other side, and a heavy phase liquid outlet pipe (221) communicated with the outside of the casing (20) is arranged at the low position weir bottom of the heavy phase cofferdam (22); the weir bottom of the light phase cofferdam (23) is in an inclined posture with a high position at one side and a low position at the other side, and a light phase liquid outlet pipe (231) communicated with the outside of the shell (20) is arranged at the low position weir bottom of the light phase cofferdam (23); the inclination directions of the heavy phase cofferdam (22) and the light phase cofferdam (23) are opposite; the bottom of the machine shell (20) is also provided with a heavy phase inlet (222), a light phase inlet (232) and a residual liquid outlet (24) which are communicated with the inner cavity of the rotary drum (21).

2. A centrifugal extractor according to claim 1, wherein: the heavy phase liquid outlet pipe (221) and the light phase liquid outlet pipe (231) are tangent to the side wall of the casing (20); the tube core directions of the heavy phase liquid outlet tube (221) and the light phase liquid outlet tube (231) are obliquely arranged on the shell (20), wherein liquid inlets of the heavy phase liquid outlet tube and the light phase liquid outlet tube on the inner wall of the shell (20) are both at a high position, and liquid outlets outside the shell (20) are both at a low position.

3. A centrifugal extractor according to claim 1, wherein: the heavy phase cofferdam (22) comprises a heavy phase vertical plate (223) and a heavy phase bottom plate (224), wherein the heavy phase vertical plate (223) and the heavy phase bottom plate (224) are arranged in a surrounding mode along the circumferential direction of the rotary drum (21) and form an annular structure, an included angle is formed between the plate surface of the heavy phase vertical plate (223) and the side wall of the rotary drum (21) to form an inclined surface, one side edge, located at the upper position, of the heavy phase vertical plate (223) is close to the side wall of the rotary drum (21), and one side edge, located at the lower position, of the heavy phase vertical plate (223) is connected with the heavy phase bottom plate (224) connected to the inner wall of the machine shell (20); the heavy phase vertical plate (223) and the heavy phase bottom plate (224) are in arc transition, and the lowest position of the plate surface of the heavy phase bottom plate (224) is higher than the inner side inlet position of the heavy phase liquid outlet pipe (221).

4. A centrifugal extractor according to claim 1, wherein: the light phase cofferdam (23) comprises a light phase vertical plate (233) and a light phase bottom plate (234) which are arranged in a surrounding way along the circumferential direction of the rotary drum (21) and form an annular structure, an included angle is formed between the plate surface of the light phase vertical plate (233) and the side wall of the rotary drum (21) to form an inclined plane, one side edge of the light phase vertical plate (233) at the upper position is close to the side wall of the rotary drum (21), and one side edge of the light phase vertical plate (233) at the lower position is connected with the light phase bottom plate (234) connected to the inner wall of the machine shell (20); the light phase vertical plate (233) and the light phase bottom plate (234) are in arc transition, and the lowest position of the plate surface of the light phase bottom plate (234) is higher than the inner side inlet position of the light phase liquid outlet pipe (231).

5. A centrifugal extractor according to claim 1, wherein: a gas-liquid mixing cavity (26) is arranged in the area between the top of the rotary drum (21) and the casing (20), a cleaning device is arranged in the gas-liquid mixing cavity (26), the cleaning device comprises an annular cleaning pipe (25) and a cleaning pipe orifice (251), and the cleaning pipe orifice (251) is communicated with the annular cleaning pipe (25), an external cleaning agent source and a purging gas source; the pipe wall of the annular cleaning pipe (25) is provided with nozzles (252) which are arranged at equal intervals, the nozzles (252) are arranged in an upper row and a lower row on the annular cleaning pipe (25), and the outlet directions of the nozzles (252) point to the inner wall of the shell (20); the diameter of the annular cleaning pipe (25) is larger than that of the rotary drum (21); and a liquid level sensor (261) is arranged in the gas-liquid mixing cavity (26).

6. A one-touch extraction system, comprising: a centrifugal extractor comprising a centrifugal extractor according to any one of the preceding claims 1 to 5; the system also comprises a heavy phase source (31), a light phase source (32), a heavy phase collecting device (33) and a light phase collecting device (34) which are connected to the extractor (10) through pipelines, wherein the heavy phase source (31) is connected to a heavy phase inlet (222) of the extractor (10), the light phase source (32) is connected to a light phase inlet (232) of the extractor (10), the heavy phase collecting device (33) is connected to a heavy phase liquid outlet pipe (221) of the extractor (10), and the light phase collecting device (34) is connected to a light phase liquid outlet pipe (231) of the extractor (10); the system also comprises a detection unit, wherein the detection unit comprises liquid level meters (40) respectively arranged on the heavy phase source (31) and the light phase source (32);

a heavy phase inlet valve (51) is arranged on a pipeline between the heavy phase source (31) and the extractor (10), and a light phase inlet valve (52) is arranged on a pipeline between the light phase source (32) and the extractor (10); a heavy phase outlet valve (53) is arranged on a pipeline between the heavy phase collecting device (33) and the extractor (10), and a light phase outlet valve (54) is arranged on a pipeline between the light phase collecting device (34) and the extractor (10).

7. A one-touch extraction system according to claim 6 wherein the pipeline between the heavy phase source (31) and the heavy phase inlet valve (51) is provided with a heavy phase feed pump (61), a heavy phase flow meter (62) and a heavy phase regulating valve (63) in sequence along the flow direction of the heavy phase feed liquid; a light phase feed pump (64), a light phase flowmeter (65) and a light phase regulating valve (66) are sequentially arranged on a pipeline between the light phase source (32) and the light phase inlet valve (52) along the flow direction of the light phase feed liquid.

8. A one-touch extractor system according to claim 6 further including a wash liquid collection means (35) and a fault collection means (36) connected by a conduit to the raffinate outlet (24) of the extractor (10); a washing liquid outlet valve (55) is arranged on a pipeline connecting the washing liquid collecting device (35) and the extractor (10), and a residual liquid emptying valve (56) is arranged on a pipeline connecting the accident collecting device (36) and the extractor (10); a liquid inlet of the accident collecting device (36) is connected with a heavy phase liquid outlet pipe (221) through a pipeline, and a heavy phase initial material valve (56a) is arranged on the pipeline between the heavy phase liquid outlet pipe and the heavy phase liquid outlet pipe; a liquid outlet of the accident collecting device (36) is connected to a heavy phase inlet (222) through a pipeline, and a mixed liquid outlet valve (56b) is arranged on the pipeline between the heavy phase inlet and the heavy phase inlet; and a sensor (2211) is also arranged at the outlet of the heavy phase liquid outlet pipe (221).

9. A one-touch extraction system according to claim 8, wherein a mixed liquor outlet pump (67) is provided between the liquor outlet of the incident collection means (36) and the mixed liquor outlet valve (56b), and wherein a branch line on the pipeline between the mixed liquor outlet pump (67) and the mixed liquor outlet valve (56b) is connected to the liquor inlet of the incident collection means (36), the branch line being provided with a mixed liquor circulation valve (56 c).

10. A one-touch extraction system according to claim 6, 7 or 8, wherein the heavy phase collection device (33), the light phase collection device (34), the washing liquid collection device (35) and the accident collection device (36) are all provided with level gauges (40), and the heavy phase collection device (33), the light phase collection device (34) and the washing liquid collection device (35) are all provided with output pumps (68);

the liquid inlets of the heavy phase collecting device (33), the light phase collecting device (34), the washing liquid collecting device (35) and the accident collecting device (36) have height difference with the liquid outlets correspondingly connected with the extractor (10), and the liquid outlet corresponding to the extractor (10) is positioned at a high position;

the diameters of valve cores of the heavy phase outlet valve (53) and the heavy phase initial material valve (56a) are larger than or equal to the diameter of a heavy phase liquid outlet pipe (221) in the extraction machine (10), and the diameter of a valve core of the light phase outlet valve (54) is larger than or equal to the diameter of a light phase liquid outlet pipe (231) in the extraction machine;

the system also comprises a cleaning agent source and a purging gas source which are connected to the cleaning pipe orifice (251) of the extraction machine (10) through pipelines, a cleaning agent inlet valve is arranged on a connecting pipeline of the cleaning agent source and the cleaning pipe orifice (251), and a purging gas inlet valve is arranged on a connecting pipeline of the purging gas source and the cleaning pipe orifice (251).

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