Naphtha extraction device and use method thereof

Abstract

The invention is suitable for the technical field of chemical equipment, and provides a naphtha extraction device and a using method thereof.The naphtha extraction device comprises a box body, a hollow shaft, a stirring structure, a pump body, a telescopic pipe, a driving mechanism and a power assembly.The box body is internally provided with a first mixing cavity and an extraction cavity, and the first mixing cavity is located above the extraction cavity; according to the naphtha extraction device provided by the invention, through the box body, the first mixing cavity, the extraction cavity, the hollow shaft, the second mixing cavity, the stirring structure, the pump body, the telescopic pipes, the driving mechanism and the power assembly, the multiple telescopic pipes are repeatedly stretched and shortened through the driving mechanism, liquid in the first mixing cavity is preliminarily stirred, and when the telescopic pipes are repeatedly stretched and shortened, the liquid in the first mixing cavity is uniformly stirred; moreover, the position of one end, far away from the hollow shaft, of the stirring shaft is changed, so that liquid at different positions in the first mixing cavity can be sucked into the second mixing cavity, the liquid is mixed more sufficiently, and the extraction efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical equipment, and in particular relates to a naphtha extraction device and a use method thereof. Background Art

[0002] Low-temperature methanol washing is a process used for the purification and separation of raw coal gas. This process uses the property that methanol has a great solubility in acidic gases at low temperatures to remove acidic gases from the raw gas, among which naphtha recovery is a very important link.

[0003] Generally, naphtha extraction device is used for recovery. According to the search of Chinese patent CN207362149U, a novel naphtha extractor is disclosed, including a flash tower, a mixing chamber is provided at the bottom of the flash tower, a stirring rod is connected through the top of the mixing chamber, a stirring motor is connected to the top of the stirring rod, a heating device is provided in the inner cavity of the mixing chamber, a discharge pipe is provided at the bottom of the mixing chamber, a spray device is connected to the bottom of the discharge pipe, an extraction chamber is provided at the bottom of the spray device, an extractant recovery pipe is connected to the bottom of the extraction chamber, the other end of the extractant recovery pipe is connected to a methanol water chamber, the bottom of the methanol water chamber is connected to a methanol water outlet, a naphtha recovery pipe is provided in the middle of the methanol water chamber, an electric pump is provided on the naphtha recovery pipe, an overflow plate is provided on the left side of the extraction chamber, a naphtha collecting chamber is provided on the left side of the overflow plate, and a naphtha finished product outlet is provided on one side of the bottom of the naphtha collecting chamber;

[0004] In the naphtha extraction device, a stirring device is required to stir and mix first, and then perform the extraction operation. In the above-mentioned prior art, liquid is sucked from a fixed position at the bottom of the mixing chamber. There is more water at the bottom of the mixing chamber, which is not conducive to sending the fully mixed liquid into the extraction chamber. Summary of the invention

[0005] The present invention provides a naphtha extraction device, aiming to solve the above-mentioned problems.

[0006] The present invention is achieved in that a naphtha extraction device comprises:

[0007] A box body, wherein a first mixing chamber and an extraction chamber are provided in the box body, and the first mixing chamber is located above the extraction chamber;

[0008] A hollow shaft is vertically rotatably mounted at the center of the first mixing chamber, wherein a second mixing chamber is disposed in the hollow shaft, wherein a stirring structure is disposed in the second mixing chamber, and a pump body is connected to the bottom end of the hollow shaft for conveying the mixed liquid in the second mixing chamber to the extraction chamber;

[0009] A plurality of rows of telescopic tubes are fixed on the side wall of the hollow shaft at intervals in an annular direction, each row of telescopic tubes is distributed along the length direction of the hollow shaft, both ends of the telescopic tubes are open, and one end of the telescopic tubes is connected to the second mixing chamber;

[0010] A driving mechanism disposed in the first mixing chamber is used to drive the multiple telescopic tubes to repeatedly extend and shorten;

[0011] The power assembly is used to drive the hollow shaft to rotate.

[0012] Preferably, the driving mechanism comprises:

[0013] A mounting frame fixed to the hollow shaft;

[0014] A plurality of spur gears installed on the mounting frame are circumferentially rotated at intervals, and one spur gear corresponds to one row of telescopic tubes;

[0015] An inner gear ring is arranged coaxially with the hollow shaft, and all spur gears are meshed with the inner gear ring;

[0016] A movable rod is arranged below the spur gear, a first pin is eccentrically fixed to the lower surface of the spur gear, and a first movable groove is provided on the movable rod along its length direction for the first pin to be inserted and moved;

[0017] A connecting rod is fixedly connected between the ends of each row of telescopic tubes away from the hollow shaft, and the top end of the connecting rod is fixedly connected to the movable rod.

[0018] Preferably, the stirring structure comprises:

[0019] A rotating shaft rotatably mounted in the hollow shaft, wherein the rotating shaft is coaxially arranged with the hollow shaft;

[0020] A plurality of stirring rods are fixed on the side wall of the rotating shaft at intervals along the axial direction of the rotating shaft.

[0021] Preferably, the hollow shaft passes through the top of the box body and extends above it, the rotating shaft passes through the top of the hollow shaft and extends above it, and the power assembly includes:

[0022] The first stepper motor is fixed on the top of the box;

[0023] A driving bevel gear fixed to the output shaft of the first stepper motor;

[0024] A driven bevel gear meshing with the driving bevel gear is fixed on the hollow shaft and the rotating shaft respectively.

[0025] Preferably, the naphtha extraction device further comprises an auxiliary unit, and the auxiliary unit comprises:

[0026] Side panels symmetrically arranged on both sides of the extraction chamber;

[0027] A motion component used to drive two side panels to move closer or farther away, the motion component comprising:

[0028] A drive shaft rotatably connected to each side plate, one end of the drive shaft extending to the inner side of the side plate and fixed with a stirring support rod, an outer spiral shaft section is provided on the drive shaft, an inner spiral sleeve is sleeved on the outer spiral shaft section, and the inner spiral sleeve is fixedly connected to the side wall of the box body;

[0029] A connecting plate rotatably connected to the drive shaft and extending to one end outside the box body, a horizontal guide rod is fixed between the connecting plate and the side plate, the guide rod movably penetrates the side wall of the box body, and an optical axis section is provided on the drive shaft between the connecting plate and the outer spiral section;

[0030] A reciprocating mechanism for driving the connecting plate to move back and forth.

[0031] Preferably, the reciprocating mechanism comprises:

[0032] Rotate the mounting shaft installed at the center of the bottom of the box;

[0033] A drive disc fixed to the mounting shaft;

[0034] A connecting rod is hinged on the connecting plate, and one end of the connecting rod away from the connecting plate is eccentrically hinged to the lower surface of the driving disk;

[0035] A power part used to drive the drive disc to rotate forward and reverse.

[0036] Preferably, the power member comprises:

[0037] A drive rod fixedly connected to the mounting shaft;

[0038] A second stepper motor is fixed on the side wall of the box body, a first electric push rod is fixed on the output shaft of the second stepper motor, a second pin is fixed to the telescopic end of the first electric push rod, and a second movable groove for the second pin to be inserted and moved is opened on the driving rod along its length direction.

[0039] Preferably, an oil outlet groove for discharging naphtha is provided on the upper portion of the side plate.

[0040] Preferably, a second electric push rod is vertically fixed on the side plate, a sealing plate for closing the oil outlet groove is fixed to the telescopic end of the second electric push rod, and a counterweight is fixed on the driving shaft.

[0041] The present invention also provides a method for using the naphtha extraction device, comprising the following steps:

[0042] Naphtha, methanol and water are added into the first mixing chamber;

[0043] The hollow shaft is driven to rotate by the power member, and the hollow shaft drives the multiple telescopic tubes to rotate, and the multiple telescopic tubes are repeatedly extended and shortened by the driving mechanism;

[0044] After the stirring time is set, the pump body is started to suck the liquid in the first mixing chamber into the telescopic tube through the end of the telescopic tube away from the hollow shaft, and then enters the second mixing chamber and is stirred again by the stirring structure;

[0045] Finally, it enters the extraction chamber.

[0046] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0047] The naphtha extraction device provided by the present invention includes a casing, a first mixing chamber, an extraction chamber, a hollow shaft, a second mixing chamber, a stirring structure, a pump body, a telescopic tube, a driving mechanism and a power assembly. The plurality of telescopic tubes of the driving mechanism are repeatedly extended and shortened to preliminarily stir the liquid in the first mixing chamber. When the telescopic tube is repeatedly extended and shortened, the stirring range is larger, and the position of one end thereof away from the hollow shaft changes, so that the liquid at different positions in the first mixing chamber can be sucked into the second mixing chamber, so that the liquid is mixed more fully and the extraction efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a structural schematic diagram of a naphtha extraction device provided by the present invention;

[0049] Figure 2 It is a bottom view of a driving mechanism in a naphtha extraction device provided by the present invention;

[0050] Figure 3 yes Figure 1 A partial enlarged view of the

[0051] Figure 4 The present invention provides a working state diagram of a reciprocating mechanism in a naphtha extraction device.

[0052] Notes on the accompanying drawings: 1. housing; 2. first mixing chamber; 3. telescopic tube; 4. connecting rod; 5. movable rod; 6. inner gear ring; 7. spur gear; 8. first stepper motor; 9. active bevel gear; 10. driven bevel gear; 11. mounting frame; 12. hollow shaft; 13. second mixing chamber; 14. rotating shaft; 15. stirring rod; 16. pump body; 17. side plate; 18. optical axis section; 19. connecting plate; 20. guide rod; 21. connecting rod; 22. inner spiral sleeve; 23. stirring support rod; 24. driving disk; 25. mounting shaft; 26. extraction chamber; 27. scraper; 28. counterweight; 29. ​​outer spiral shaft section; 30. second electric push rod; 31. sealing plate; 32. driving rod; 33. second stepper motor; 34. first electric push rod; 35. oil outlet groove; 36. oil drain port. DETAILED DESCRIPTION

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0054] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0055] The embodiment of the present invention provides a naphtha extraction device, such as Figure 1-Figure 4 As shown, including:

[0056] A box body 1, wherein a first mixing chamber 2 and an extraction chamber 26 are provided in the box body 1, wherein the first mixing chamber 2 is located above the extraction chamber 26, and a steam interface communicating with the first mixing chamber 2 and the extraction chamber 26 is provided on the box wall of the box body 1, and the steam interface is used to communicate with the flash tower;

[0057] A hollow shaft 12 is vertically rotatably mounted at the center of the first mixing chamber 2, wherein a second mixing chamber 13 is disposed in the hollow shaft 12, wherein a stirring structure is disposed in the second mixing chamber 13, and a pump body 16 is connected to the bottom end of the hollow shaft 12 for conveying the mixed liquid in the second mixing chamber 13 to the extraction chamber 26;

[0058] A plurality of rows of telescopic tubes 3 are fixed on the side wall of the hollow shaft 12 at intervals in an annular direction, each row of telescopic tubes 3 is distributed along the length direction of the hollow shaft 12, both ends of the telescopic tubes 3 are open, and one end of the telescopic tubes 3 is connected to the second mixing chamber 13;

[0059] The driving mechanism disposed in the first mixing chamber 2 is used to drive the plurality of telescopic tubes 3 to repeatedly extend and shorten;

[0060] The power assembly is used to drive the hollow shaft 12 to rotate.

[0061] During the methanol washing process of the crude coal gas, after the methanol-naphtha-acid gas mixture is flashed to remove the acid gas, the methanol-naphtha mixture and water are added to the first mixing chamber 2, which can be added through multiple interfaces. The power piece drives the hollow shaft 12 to rotate, and the hollow shaft 12 drives the multiple telescopic tubes 3 to rotate. The multiple telescopic tubes 3 are repeatedly extended and shortened by the driving mechanism to preliminarily stir the liquid in the first mixing chamber 2. After the stirring time is set, the pump body 16 is started to suck the liquid in the first mixing chamber 2 into the telescopic tube 3 through the end of the telescopic tube 3 away from the hollow shaft 12, and then enter the second mixing chamber 13 to be stirred again by the stirring structure, and finally enter the extraction chamber 26. When the telescopic tube 3 is repeatedly extended and shortened, the position of the end away from the hollow shaft 12 changes, and the liquid at different positions in the first mixing chamber 2 can be sucked into the second mixing chamber 13, so that the liquid mixing is more sufficient and the extraction efficiency is improved.

[0062] Wherein, the driving mechanism comprises:

[0063] The mounting frame 11 fixed on the hollow shaft 12 can be fixed by welding;

[0064] A plurality of spur gears 7 are installed on the mounting frame 11 and are rotatably mounted at intervals in the annular direction, and one spur gear 7 corresponds to one row of telescopic tubes 3;

[0065] An inner gear ring 6 is coaxially arranged with the hollow shaft 12, and all spur gears 7 are meshed with the inner gear ring 6;

[0066] A movable rod 5 is arranged below the spur gear 7, a first pin is eccentrically fixed to the lower surface of the spur gear 7, and a first movable groove is provided along the length direction of the movable rod 5 for the first pin to be inserted and moved;

[0067] A connecting rod 4 is fixedly connected between the ends of each row of telescopic tubes 3 away from the hollow shaft 12, and the top of the connecting rod 4 is fixedly connected to the movable rod 5;

[0068] During operation, the hollow shaft 12 rotates, the hollow shaft 12 drives the mounting frame 11 to rotate, the mounting frame 11 drives the spur gear 7 to rotate relative to the inner gear ring 6, the spur gear 7 rotates, the spur gear 7 drives the first pin shaft to revolve, the first pin shaft drives the movable rod 5 to reciprocate, and the movable rod 5 drives the telescopic tube 3 to repeatedly extend and shorten through the connecting rod 4.

[0069] Specifically, the stirring structure includes:

[0070] A rotating shaft 14 is rotatably mounted in the hollow shaft 12, wherein the rotating shaft 14 is coaxially arranged with the hollow shaft 12;

[0071] A plurality of stirring rods 15 fixed on the side wall of the rotating shaft 14 at intervals along the axial direction of the rotating shaft 14 may be fixed by welding.

[0072] In this embodiment, the hollow shaft 12 passes through the top of the box body 1 and extends above it, the rotating shaft 14 passes through the top of the hollow shaft 12 and extends above it, and the power assembly includes:

[0073] The first stepper motor 8 fixed to the top of the box body 1 can be fixed by bolts;

[0074] A driving bevel gear 9 fixed to the output shaft of the first stepper motor 8;

[0075] A driven bevel gear 10 meshing with the driving bevel gear 9 is fixed to the hollow shaft 12 and the rotating shaft 14 respectively.

[0076] During operation, the first stepper motor 8 drives the active bevel gear 9 to rotate, the active bevel gear 9 drives the two driven bevel gears 10 to rotate, the two driven bevel gears 10 respectively drive the hollow shaft 12 and the rotating shaft 14 to rotate in opposite directions, the hollow shaft 12 drives the telescopic tube 3 to rotate, and the liquid in the first mixing chamber 2 is stirred, and the rotating shaft 14 drives the stirring rod 15 to rotate, and the liquid in the second mixing chamber 13 is stirred.

[0077] Furthermore, the naphtha extraction device also includes an auxiliary unit, and the auxiliary unit includes:

[0078] Side plates 17 symmetrically arranged on both sides of the extraction chamber 26;

[0079] A motion component for driving the two side panels 17 to move closer or farther away, the motion component comprising:

[0080] A driving shaft rotatably connected to each side plate 17, one end of the driving shaft extends to the inner side of the side plate 17 and is fixed with a stirring support rod 23, the driving shaft is provided with an outer spiral shaft section 29, the outer spiral shaft section 29 is sleeved with an inner spiral sleeve 22, and the inner spiral sleeve 22 is fixedly connected to the side wall of the box body 1;

[0081] A connecting plate 19 is rotatably connected to the driving shaft and extends to one end outside the box body 1. A horizontal guide rod 20 is fixed between the connecting plate 19 and the side plate 17. The guide rod 20 movably penetrates the side wall of the box body 1. An optical axis section 18 is provided on the driving shaft between the connecting plate 19 and the outer spiral section.

[0082] A reciprocating mechanism for driving the connecting plate 19 to reciprocate.

[0083] When the liquid enters the extraction chamber 26, the reciprocating mechanism can drive the connecting plate 19 to reciprocate left and right. The connecting plate 19 drives the side plate 17 to reciprocate left and right through the driving shaft. When the outer spiral shaft section 29 on the driving shaft moves relative to the inner spiral sleeve 22, the driving shaft rotates, and the driving shaft drives the stirring support rod 23 to rotate, which can further stir the liquid between the two side plates 17. At the same time, when the two side plates 17 approach or move away from each other, the liquid between the two side plates 17 is pushed, which further helps to fully mix the liquid. After stirring for a period of time, the reciprocating mechanism stops, the side plate 17 stops moving, and is left to stand.

[0084] Wherein, the reciprocating mechanism comprises:

[0085] The mounting shaft 25 is rotatably mounted at the bottom center of the housing 1 and can be rotatably mounted via a bearing;

[0086] A drive disc 24 fixed to the mounting shaft 25;

[0087] A connecting rod 21 is hinged on the connecting plate 19, and one end of the connecting rod 21 away from the connecting plate 19 is eccentrically hinged to the lower surface of the driving disk 24;

[0088] A power member used to drive the driving disc 24 to rotate forward and reverse.

[0089] During operation, the driving disc 24 is driven by the power member to rotate forward and reverse, preferably the forward and reverse rotation angle is less than 90 degrees, the driving disc 24 drives the connecting plate 19 to reciprocate left and right through the connecting rod 21, and the connecting plate 19 drives the driving shaft to reciprocate left and right.

[0090] Wherein, the power part comprises:

[0091] A drive rod 32 fixedly connected to the mounting shaft 25;

[0092] A second stepper motor 33 is fixed on the side wall of the box body 1, and a first electric push rod 34 is fixed on the output shaft of the second stepper motor 33. The first electric push rod 34 can be powered by a brush. A second pin is fixed to the telescopic end of the first electric push rod 34. A second movable groove is opened on the driving rod 32 along its length direction for the second pin to be inserted and moved.

[0093] During operation, the second stepper motor 33 is started, the second stepper motor 33 drives the first electric push rod 34 to rotate, the first electric push rod 34 drives the second pin shaft to revolve, the second pin shaft drives the driving rod 32 to swing back and forth, the driving rod 32 drives the driving disk 24 to rotate forward and reversely through the mounting shaft 25, and the first electric push rod 34 is extended to adjust the second pin shaft's revolving diameter, thereby adjusting the reciprocating swing range of the driving rod 32, thereby adjusting the forward and reverse rotation angle of the driving disk 24.

[0094] In this embodiment, an oil outlet groove 35 for discharging naphtha is provided on the upper portion of the side plate 17 .

[0095] Furthermore, a second electric push rod 30 is vertically fixed on the side plate 17 and can be fixed by screws. A sealing plate 31 for closing the oil outlet groove 35 is fixed to the telescopic end of the second electric push rod 30, and a counterweight 28 is fixed on the driving shaft.

[0096] When the second electric push rod 30 is extended, the second electric push rod 30 drives the sealing plate 31 to move upward, so as to close the oil outlet groove 35 .

[0097] It needs to be explained that the work of the auxiliary unit is divided into two stages:

[0098] The first stage: the second electric push rod 30 drives the sealing plate 31 to close the oil outlet groove 35. At the same time, the third electric push rod 28 is in a shortened state and its telescopic end is spaced apart from the driving shaft. After the liquid in the second mixing chamber 13 enters the extraction chamber 26, the second stepper motor 33 is started. The second stepper motor 33 drives the first electric push rod 34 to rotate. The first electric push rod 34 drives the second pin shaft to revolve. The second pin shaft drives the driving rod 32 to swing back and forth. The driving rod 32 drives the driving disk 24 to rotate forward and reversely through the mounting shaft 25. The driving disk 24 drives the connecting plate 19 to reciprocate left and right through the connecting rod 21. The connecting plate 19 drives the driving shaft to reciprocate left and right. The connecting plate 19 drives the driving shaft to reciprocate left and right through the driving shaft. The movable side plate 17 reciprocates left and right, and when the outer spiral shaft section 29 on the driving shaft moves relative to the inner spiral sleeve 22, the driving shaft rotates, and the driving shaft drives the stirring support rod 23 to rotate, which can further stir the liquid between the two side plates 17. At the same time, when the two side plates 17 are approaching or moving away from each other, the liquid between the two is pushed, which further helps to fully mix the liquid. When the connecting plate 19 moves toward the end of the stroke in the direction close to the box body 1, the inner spiral sleeve 22 is located at the optical axis section 18 of the driving shaft. After stirring for a period of time, the second stepping motor 33 is set to stop when the connecting plate 19 moves toward the end of the stroke in the direction close to the box body 1, and the side plate 17 stops moving and is left to stand still;

[0099] The second stage: after the static state is over, the second electric push rod 30 shortens and drives the sealing plate 31 to move downward, so as to open the oil outlet groove 35. The first electric push rod 34 continues to extend and drives the driving disc 24 to continue to rotate through the driving rod 32. The driving disc 24 drives the connecting plate 19 to continue to move through the connecting rod 21. The connecting plate 19 drives the driving shaft to continue to move into the box body 1. The driving shaft drives the side plate 17 to continue to move. The two side plates 17 are close to each other. At this time, the optical axis section 18 of the driving shaft cooperates with the inner spiral sleeve 22. Under the action of the counterweight 28, the driving shaft will not rotate freely. Along with the two side plates 17 Gradually approaching, the naphtha is gathered and the liquid level rises. When rising, the naphtha is discharged from the oil outlet groove 35 to the outside of the side plate 17, and then discharged through the oil discharge port 36 connected to the bottom of the extraction chamber 26, until the top side of the oil outlet groove 35 is 1 cm away from the oil-liquid stratification point, thereby increasing the amount of naphtha collected and improving the extraction efficiency. A transparent observation window is provided on the side wall of the box body 1 at the extraction chamber 26 for easy observation. A scraper bar 27 is fixed on the outer wall of the side plate 17. After the extraction of naphtha is completed, the moving component drives the side plate 17 to reset, and the scraper bar 27 can push the naphtha to the oil discharge port 36.

[0100] It should be noted that, for the above embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0101] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A naphtha extraction device, characterized in that: include: A box body, wherein a first mixing chamber and an extraction chamber are provided in the box body, and the first mixing chamber is located above the extraction chamber; A hollow shaft is vertically rotatably mounted at the center of the first mixing chamber, wherein a second mixing chamber is disposed in the hollow shaft, wherein a stirring structure is disposed in the second mixing chamber, and a pump body is connected to the bottom end of the hollow shaft for conveying the mixed liquid in the second mixing chamber to the extraction chamber; A plurality of rows of telescopic tubes are fixed on the side wall of the hollow shaft at intervals in an annular direction, each row of telescopic tubes is distributed along the length direction of the hollow shaft, both ends of the telescopic tubes are open, and one end of the telescopic tubes is connected to the second mixing chamber; A driving mechanism disposed in the first mixing chamber is used to drive the multiple telescopic tubes to repeatedly extend and shorten; The power assembly is used to drive the hollow shaft to rotate.

2. The naphtha extraction device according to claim 1, characterized in that: The driving mechanism comprises: A mounting frame fixed to the hollow shaft; A plurality of spur gears installed on the mounting frame are circumferentially rotated at intervals, and one spur gear corresponds to one row of telescopic tubes; An inner gear ring is arranged coaxially with the hollow shaft, and all spur gears are meshed with the inner gear ring; A movable rod is arranged below the spur gear, a first pin is eccentrically fixed to the lower surface of the spur gear, and a first movable groove is provided on the movable rod along its length direction for the first pin to be inserted and moved; A connecting rod is fixedly connected between the ends of each row of telescopic tubes away from the hollow shaft, and the top end of the connecting rod is fixedly connected to the movable rod.

3. The naphtha extraction device according to claim 1, characterized in that: The stirring structure comprises: A rotating shaft rotatably mounted in the hollow shaft, wherein the rotating shaft is coaxially arranged with the hollow shaft; A plurality of stirring rods are fixed on the side wall of the rotating shaft at intervals along the axial direction of the rotating shaft.

4. The naphtha extraction device according to claim 3, characterized in that: The hollow shaft passes through the top of the box body and extends above it, the rotating shaft passes through the top of the hollow shaft and extends above it, and the power assembly includes: The first stepper motor is fixed on the top of the box; A driving bevel gear fixed to the output shaft of the first stepper motor; A driven bevel gear meshing with the driving bevel gear is fixed on the hollow shaft and the rotating shaft respectively.

5. The naphtha extraction device according to claim 1, characterized in that: The naphtha extraction device further comprises an auxiliary unit, wherein the auxiliary unit comprises: Side panels symmetrically arranged on both sides of the extraction chamber; A motion component used to drive two side panels to move closer or farther away, the motion component comprising: A drive shaft rotatably connected to each side plate, one end of the drive shaft extending to the inner side of the side plate and fixed with a stirring support rod, an outer spiral shaft section is provided on the drive shaft, an inner spiral sleeve is sleeved on the outer spiral shaft section, and the inner spiral sleeve is fixedly connected to the side wall of the box body; A connecting plate rotatably connected to the drive shaft and extending to one end outside the box body, a horizontal guide rod is fixed between the connecting plate and the side plate, the guide rod movably penetrates the side wall of the box body, and an optical axis section is provided on the drive shaft between the connecting plate and the outer spiral section; A reciprocating mechanism for driving the connecting plate to move back and forth.

6. The naphtha extraction device according to claim 5, characterized in that: The reciprocating mechanism comprises: Rotate the mounting shaft installed at the center of the bottom of the box; A drive disc fixed to the mounting shaft; A connecting rod is hinged on the connecting plate, and one end of the connecting rod away from the connecting plate is eccentrically hinged to the lower surface of the driving disk; A power part used to drive the drive disc to rotate forward and reverse.

7. The naphtha extraction device according to claim 6, characterized in that: The power member comprises: A drive rod fixedly connected to the mounting shaft; A second stepper motor is fixed on the side wall of the box body, a first electric push rod is fixed on the output shaft of the second stepper motor, a second pin is fixed to the telescopic end of the first electric push rod, and a second movable groove for the second pin to be inserted and moved is opened on the driving rod along its length direction.

8. The naphtha extraction device according to claim 7, characterized in that: An oil outlet groove for discharging naphtha is provided on the upper part of the side plate.

9. The naphtha extraction device according to claim 8, characterized in that: A second electric push rod is vertically fixed on the side plate, a sealing plate for closing the oil outlet groove is fixed to the telescopic end of the second electric push rod, and a counterweight is fixed on the driving shaft.

10. The method for using the naphtha extraction device according to claim 9, characterized in that: The steps include: A methanol-naphtha mixture and water are added to a first mixing chamber; The hollow shaft is driven to rotate by the power member, and the hollow shaft drives the multiple telescopic tubes to rotate, and the multiple telescopic tubes are repeatedly extended and shortened by the driving mechanism; After the stirring time is set, the pump body is started to suck the liquid in the first mixing chamber into the telescopic tube through the end of the telescopic tube away from the hollow shaft, and then enters the second mixing chamber and is stirred again by the stirring structure; Finally it enters the extraction chamber.

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