An extraction and impurity removal device

Abstract

The present invention relates to the technical field of extraction and separation equipment, and specifically discloses an extraction and impurity removal device, which includes a frame body, a housing, a mixing cylinder and a driving structure for driving the mixing cylinder to rotate. A first liquid inlet and a second liquid inlet are provided at the lower end of the housing, and a first liquid outlet and a second liquid outlet are provided at the upper end of the housing. A liquid inlet channel that simultaneously communicates with the first liquid inlet and the second liquid inlet is provided at the lower end of the mixing cylinder. A first liquid separation tank communicating with the first liquid outlet and a second liquid separation tank communicating with the second liquid outlet are provided at the upper end of the mixing cylinder. The liquid inlet end of the liquid separation tank is located outside the liquid inlet end of the liquid separation tank; a cleaning mechanism is provided inside the mixing cylinder. The cleaning mechanism includes a guide shaft, a cleaning member and an adjusting assembly. The guide shaft is coaxially arranged with the mixing cylinder. The lower end of the guide cylinder is fixed to the housing. The cleaning member is threadedly connected to the guide shaft. The adjusting assembly is used to adjust the relative rotation state of the cleaning member and the guide shaft. The extraction and impurity removal device of the present invention improves the cleaning effect on the mixing cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of extraction separation equipment, and particularly relates to an extraction and impurity removal device. Background Art

[0002] In the process of drug processing, extraction and impurity removal is a commonly used separation and purification technique, aiming to remove unwanted impurities and improve the purity of the target product. This process is based on the solubility differences of different substances in two immiscible solvents for separation. In related technologies, extraction and impurity removal operations are mostly carried out through extraction equipment. When the extraction equipment works, it is necessary to fully mix the liquid. To avoid affecting subsequent extraction operations, it is also necessary to clean the extraction equipment after the extraction is completed.

[0003] The patent document with the authorization announcement number CN210754050U discloses a self-cleaning rotating mechanism for a biological component extraction device, which includes: a rotating shaft, a rotary joint, a gearbox and a nozzle. The rotating shaft is vertically arranged on the rotary joint. A core hole communicating with the rotary joint is concentrically arranged in the rotating shaft. A water inlet pipe is connected to one side of the rotary joint. The nozzle respectively includes a pipe body, a screw, a spring and a core column. A first round hole communicating with the core hole is arranged at the inner end of the pipe body. A second round hole concentrically connected to the first round hole is arranged at the outer end of the pipe body. The core column, the spring and the screw are axially arranged outward in the second round hole in sequence. A water spraying hole pointing to the core column is arranged on the outer circle of the pipe body. After the extraction work of the self-cleaning rotating mechanism of this patent document is completed, the valve is opened to allow tap water or cleaning solution to enter the core hole. The water pressure is used to drive the core column to resist the elastic force of the spring, so that the spring is compressed and adapts to the outward movement of the core column, thereby opening the water spraying hole. During the cleaning process, in cooperation with the rotation of the rotating shaft, comprehensive spray washing of the extraction equipment is realized.

[0004] The self-cleaning rotating mechanism of the above patent document cleans the extraction equipment by means of spraying. In the actual production process, the viscosity of some solvents in the extraction operation is relatively large. After the extraction work is completed, it is difficult to ensure the cleaning effect of the inner wall of the extraction equipment only by means of spray washing. The residual impurities on the inner wall of the extraction equipment will affect the quality of subsequent extraction operations. Summary of the Invention

[0005] The present invention provides an extraction and impurity removal device, aiming to solve the problems in the related extraction and impurity removal devices that after the extraction work is completed, affected by the solvent viscosity, it is difficult to clean the inner wall of the extraction equipment and the cleaning effect is not ideal.

[0006] An impurity removal device for extraction according to the present invention includes a frame body, a housing fixedly arranged on the frame body, and a mixing cylinder arranged inside the housing. The mixing cylinder is connected with a driving structure for driving the mixing cylinder to rotate. A first liquid inlet and a second liquid inlet are arranged at the lower end of the housing, and a first liquid outlet and a second liquid outlet are arranged at the upper end of the housing. A liquid inlet channel that simultaneously communicates with the first liquid inlet and the second liquid inlet is arranged at the lower end of the mixing cylinder. A first liquid separation tank communicating with the first liquid outlet and a second liquid separation tank communicating with the second liquid outlet are arranged at the upper end of the mixing cylinder. Taking the side facing the axis of the mixing cylinder as the inner side, the liquid inlet end of the first liquid separation tank is located outside the liquid inlet end of the second liquid separation tank. A cleaning mechanism is arranged inside the mixing cylinder. The cleaning mechanism includes a guiding shaft, a cleaning member, and an adjusting assembly. The guiding shaft is coaxially arranged with the mixing cylinder. The lower end of the guiding shaft is fixed to the housing. The cleaning member is threadedly connected with the guiding shaft. The adjusting assembly is used to adjust the relative rotation state of the cleaning member and the guiding shaft.

[0007] The beneficial effects are as follows: The cleaning effect on the inner wall of the mixing cylinder is improved, and at the same time, it is avoided that the cleaning mechanism affects the separation of the two solvents during the extraction work. The solvents added from the first liquid inlet and the second liquid inlet enter the mixing cylinder from bottom to top through the liquid inlet channel. When the driving structure drives the mixing cylinder to rotate, the two solvents are mixed and separated under the action of centrifugal force. The solution with a larger density is close to the inner wall of the mixing cylinder, and the solution with a smaller density is close to the axis of the mixing cylinder. As the solvents continue to be introduced, the liquid level in the mixing cylinder rises. The solvents with different densities flow out through the first liquid separation tank and the second liquid separation tank respectively, and are further collected by the first liquid outlet and the second liquid outlet, realizing continuous extraction operation of the solvents and improving the extraction efficiency. The adjusting assembly is used to adjust the relative rotation state of the guiding shaft and the mixing cylinder. During the extraction work, the cleaning member is fixed relative to the guiding shaft to avoid the cleaning member interfering with the separation of the two solvents. During the cleaning work, the adjusting assembly adjusts the cleaning member to rotate relative to the mixing cylinder, and the cleaning member scrapes the residual solvents on the inner wall of the mixing cylinder to improve the cleaning effect of the mixing cylinder.

[0008] Preferably, the adjusting assembly includes an adjusting member, a guiding member, and a transmission structure. A connecting seat is fixed at the upper end of the guiding shaft. The connecting seat is rotationally matched with the mixing cylinder. The adjusting member is rotationally matched with the connecting seat. The mixing cylinder is connected with the adjusting member through the transmission structure. The adjusting member rotates in the opposite direction relative to the mixing cylinder. A limiting groove is arranged inside the adjusting member. The upper end of the guiding member is movably inserted and matched with the limiting groove. When the guiding member is inserted into the limiting groove, it is fixed relative to the adjusting member.

[0009] The beneficial effects are: it is convenient to flexibly adjust the relative rotation state of the cleaning member and the guide shaft according to different working conditions. When the guide member moves downward relative to the adjusting member, under the plug-in limiting action of the limiting groove and the guide member, the guide member rotates synchronously with the adjusting member. When the guide member moves upward relative to the adjusting member, the guide member is separated from the limiting groove, and the circumferential limit of the guide member and the adjusting member is released, and the guide member does not rotate with the adjusting member.

[0010] Preferably, the upper end of the guide member is provided with a member extending into between the guide shaft and the adjusting member, and a guide portion is fixed on the guide member, and the guide portion is movably plugged into the limiting groove.

[0011] Preferably, there are two limiting grooves and two guiding parts, the two guiding parts are movable relative to the two limiting grooves, the two limiting grooves are connected by an adjusting part, and the height of the adjusting part increases in the direction away from the limiting groove.

[0012] The beneficial effect is: ensuring that the guide part smoothly falls into the limiting groove of the adjusting part when the guide part moves downward, after the movable plate is separated from the guide part, the guide part moves downward under the action of gravity, and the adjusting part continues to rotate under the action of the transmission structure, the guide part fits with the adjusting part, and moves downward along the inclined direction of the adjusting part until the guide part enters the limiting groove.

[0013] Preferably, the liquid inlet channel is provided with a guide groove in the vertical direction, a guide rod is fixed in the guide groove, both ends of the guide rod respectively extend to the upper and lower sides of the liquid inlet channel, and a movable plate that slides with the guide rod is provided in the liquid inlet channel, the movable plate is elastically connected to the guide rod at its upper and lower sides, a movable part is rotatably connected to the middle part of the movable plate, the movable part is movably abutted against the lower end of the guide member, and the movable part is relatively fixed when abutting against the guide member.

[0014] The beneficial effects are: it is convenient to flexibly adjust the relative fixed state of the guide member and the adjusting member according to the working state of the equipment. When performing extraction work, the solvent enters the mixing cylinder from the liquid inlet channel and lifts the movable plate upward, thereby pushing the guide member upward and releasing the limit of the guide member and the adjusting member. When performing cleaning work, the cleaning liquid enters the mixing cylinder from the liquid separation tank 1 and the liquid separation tank 2, the movable plate moves downward along the liquid inlet channel, the guide member and the adjusting member maintain the limit state, and the guide member rotates with the adjusting member.

[0015] Preferably, the movable portion is slidably matched with the guide shaft in the vertical direction, and the end faces of the movable portion and the guide member opposite to each other are both toothed surfaces.

[0016] Preferably, the transmission structure includes a ring gear, a gear, and a tooth portion. The ring gear is fixed to the top of the mixing cylinder, and the ring gear is coaxially arranged with the mixing cylinder. The gear is rotatably fitted with the connecting seat. The tooth portion is provided on the outer peripheral side of the adjusting member, and the gear meshes with both the ring gear and the tooth portion simultaneously.

[0017] The beneficial effect is as follows: To ensure the smooth progress of the cleaning work, the ring gear rotates with the mixing cylinder, and under the drive of the gear, it drives the tooth portion to rotate in the reverse direction, that is, the adjusting member rotates relative to the mixing cylinder in the reverse direction under the action of the transmission structure. When the guiding member and the adjusting member are limited, the cleaning member rotates synchronously with the guiding member and rotates relative to the inner wall of the mixing cylinder, so that the cleaning member can smoothly scrape off the residues on the inner wall of the mixing cylinder.

[0018] Preferably, the cleaning member includes a connecting portion and a cleaning portion. The connecting portion is threadedly connected to the guiding shaft. The cleaning portion is elastically slidably connected to the connecting portion in the horizontal direction. The cleaning portion is also connected to the connecting portion through a connecting rod structure, and the connecting rod structure is used to limit the relative position between the cleaning portion and the connecting portion.

[0019] Preferably, the connecting rod structure includes a first connecting rod, a second connecting rod, and a push rod. One end of the first connecting rod is hinged to the connecting portion, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to the cleaning portion, a pushing block is provided in the middle of the first connecting rod, the push rod is fixed to the guiding member, and the push rod abuts against the pushing block.

[0020] The beneficial effect is as follows: To avoid scratching between the cleaning member and the inner wall of the mixing cylinder during the extraction process and reduce the wear of the inner wall of the mixing cylinder. During the extraction process, the movable plate pushes the guiding member upward. The push rod on the guiding member pushes the first connecting rod to rotate through the pushing block, and the first connecting rod pulls the cleaning portion to move inward through the second connecting rod, so that the cleaning portion is separated from the inner wall of the mixing cylinder.

[0021] Preferably, the driving structure includes a driving source and a driving shaft. The driving source is installed on the housing, the driving end of the driving source is connected to the driving shaft, and the driving shaft is fixed to the mixing cylinder.

[0022] The beneficial effects of the present invention are as follows: improving the cleaning effect on the inner wall of the mixing cylinder, while avoiding the influence of the cleaning mechanism on the separation of the two solvents during the extraction work. The solvents added from the first liquid inlet and the second liquid inlet enter the mixing cylinder from bottom to top through the liquid inlet channel. When the driving structure drives the mixing cylinder to rotate, the two solvents are mixed and separated under the action of centrifugal force. The solution with a larger density is close to the inner wall of the mixing cylinder, and the solution with a smaller density is close to the axis of the mixing cylinder. As the solvents continue to be introduced, the liquid level in the mixing cylinder rises, and the solvents with different densities flow out through the first liquid separation groove and the second liquid separation groove respectively, and are further collected by the first liquid outlet and the second liquid outlet, realizing the continuous extraction operation of the solvents and improving the extraction efficiency; the adjustment component is used to adjust the relative rotation state of the guide shaft and the mixing cylinder. During the extraction work, the cleaning part is fixed relative to the guide shaft to avoid interference of the cleaning part on the separation of the two solvents. During the cleaning work, the adjustment component adjusts the rotation of the cleaning part relative to the mixing cylinder, and the cleaning part scrapes the residual solvents on the inner wall of the mixing cylinder to improve the cleaning effect of the mixing cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the front view of the present invention.

[0024] Figure 2 is the schematic structural diagram of the inside of the mixing cylinder in the cleaning state.

[0025] Figure 3 is Figure 2 the front view of

[0026] Figure 4 is Figure 3 the enlarged view of part A in

[0027] Figure 5 is the schematic diagram of the state of the cleaning part in the extraction state of the present invention.

[0028] Figure 6 is the schematic structural diagram of the connection between the adjusting part and the mixing cylinder through the transmission structure in the present invention.

[0029] Figure 7 is the schematic diagram of the positional relationship between the first liquid separation groove and the second liquid separation groove and the mixing cylinder in the present invention.

[0030] Figure 8 is the schematic structural diagram of the connection between the adjusting part and the guiding part in the present invention.

[0031] Reference numerals:

[0032] 1. Frame; 11. Driving source; 111. Driving shaft; 2. Housing; 21. First liquid inlet; 22. Second liquid inlet; 23. First liquid outlet; 24. Second liquid outlet; 3. Mixing cylinder; 31. Liquid inlet channel; 311. Guide rod; 312. Movable plate; 313. Movable part; 32. First liquid distribution groove; 33. Second liquid distribution groove; 4. Cleaning part; 401. Connection part; 402. Cleaning part; 403. First connecting rod; 404. Second connecting rod; 405. Pushing block; 41. Guide shaft; 411. Connection seat; 42. Guide part; 421. Guide portion; 422. Push rod; 43. Adjusting part; 431. Tooth part; 432. Gear; 433. Tooth ring; 434. Limit groove; 435. Adjusting portion. Detailed implementation manners

[0033] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0034] As Figures 1 to 3 shown, the extraction and impurity removal device of the present invention includes a frame 1, a housing 2 fixedly arranged on the frame 1, and a mixing cylinder 3 rotatably arranged inside the housing 2. A cleaning mechanism for cleaning the inner wall of the mixing cylinder 3 after the extraction work is provided inside the mixing cylinder 3. A first liquid inlet 21 and a second liquid inlet 22 are provided at the lower end of the housing 2. The first liquid inlet 21 and the second liquid inlet 22 are respectively used for introducing different solvents. A first liquid outlet 23 and a second liquid outlet 24 are provided at the upper end of the housing 2. The first liquid outlet 23 and the second liquid outlet 24 are respectively used for the outflow of different solvents. A liquid inlet channel 31 is provided at the lower end of the mixing cylinder 3. The first liquid inlet 21 and the second liquid inlet 22 are both communicated with the liquid inlet channel 31. A first liquid distribution groove 32 and a second liquid distribution groove 33 are provided at the upper end of the mixing cylinder 3. The first liquid distribution groove 32 is communicated with the first liquid outlet 23, and the second liquid distribution groove 33 is communicated with the second liquid outlet 24. As Figure 7 shown, with the side facing the axis of the mixing cylinder 3 as the inner side, the liquid inlet end of the first liquid distribution groove 32 is located outside the liquid inlet end of the second liquid distribution groove 33. In order to facilitate the smooth discharge of the two solvents, a plurality of first liquid distribution grooves 32 and second liquid distribution grooves 33 are provided. Each first liquid distribution groove 32 is evenly spaced along the circumferential direction of the mixing cylinder 3, and each second liquid distribution groove 33 is also evenly spaced along the circumferential direction of the mixing cylinder 3.

[0035] A driving structure is further provided on the housing 2, and the driving structure drives the mixing cylinder 3 to rotate around its own axis. The driving structure may include a driving source 11 and a driving shaft 111. The driving source 11 is installed at the upper end of the housing 2. The driving source 11 may be a motor. The driving end of the driving source 11 is connected to the driving shaft 111, and the driving shaft 111 is fixed to the upper end of the mixing cylinder 3.

[0036] When the driving structure works, it drives the mixing cylinder 3 to rotate. There is a certain density difference between the two solvents used for extraction. The solvents inside the mixing cylinder 3 are separated under the action of centrifugal force. The solvent with a larger density will move to the outer area faster. During the separation of the two solvents under the action of centrifugal force, the contact opportunity and area of the two solvents are increased in a short time, which also promotes the extraction and separation of impurities in the solvents. As the solvents continue to be introduced, the liquid level height inside the mixing cylinder 3 gradually increases. The solvent with a larger density enters the liquid outlet 1 23 from the liquid separation tank 1 32, and the solvent with a smaller density enters the liquid outlet 2 24 from the liquid separation tank 2 33. Then, the solvents discharged from the liquid outlet 1 23 and the liquid outlet 2 24 are collected separately. The extraction and impurity removal device can continuously introduce solvents during the extraction process and continuously export the separated solvents, realizing continuous extraction operation and effectively improving the extraction efficiency of the solvents.

[0037] As Figures 2 to 6 shown, the cleaning mechanism includes a guide shaft 41, a cleaning member 4 and an adjustment assembly. The guide shaft 41 is coaxially arranged with the mixing cylinder 3. The lower end of the guide shaft 41 is fixed to the housing 2, and the upper end of the guide shaft 41 is rotatably matched with the mixing cylinder 3. A circular plate-shaped connecting seat 411 is fixed to the upper end of the guide shaft 41, and the connecting seat 411 is rotatably matched with the top end of the mixing cylinder 3. The cleaning member 4 is in threaded cooperation with the guide shaft 41, and the adjustment assembly is used to adjust the relative rotation state of the cleaning member 4 and the guide shaft 41.

[0038] The adjustment assembly includes an adjustment member 43, a guide member 42 and a transmission structure. The adjustment member 43 is in a cylindrical shape. The upper end of the adjustment member 43 is rotatably matched with the connecting seat 411, and the adjustment member 43 is coaxially arranged with the guide shaft 41. The mixing cylinder 3 is connected to the guide member 42 through the transmission structure. The transmission structure includes a gear ring 433, a gear 432 and a tooth portion 431. The gear ring 433 is fixed to the top end face of the mixing cylinder 3, and the gear ring 433 is coaxially arranged with the mixing cylinder 3. The gear 432 is rotatably matched with the connecting seat 411, and the tooth portion 431 is arranged on the outer peripheral side of the adjustment member 43. The gear 432 is simultaneously meshed with the gear ring 433 and the tooth portion 431. When the mixing cylinder 3 rotates, the gear ring 433 rotates with the mixing cylinder 3 and drives the gear 432 to rotate. The gear 432 further drives the adjustment member 43 to rotate through the tooth portion 431. The adjustment member 43 rotates in the opposite direction to the mixing cylinder 3 under the action of the transmission structure.

[0039] As Figure 8As shown in the figure, a limiting groove 434 and an adjusting part 435 are provided inside the adjusting part 43. The upper end of the guiding part 42 is located between the guiding shaft 41 and the adjusting part 43. A guiding part 421 is provided on the guiding part 42, and the guiding part 421 is movably inserted into the limiting groove 434. When the guiding part 421 is inserted into the limiting groove 434, the guiding part 42 is relatively fixed to the adjusting part 43 in the circumferential direction and rotates synchronously with the adjusting part 43. When the guiding part 421 disengages from the limiting groove 434, the guiding part 42 and the adjusting part 43 are rotationally matched in the circumferential direction, and the guiding part 42 does not rotate with the adjusting part 43. There are two limiting grooves 434 and two guiding parts 421. The two guiding parts 421 are movably opposite to the two limiting grooves 434. The two limiting grooves 434 are connected by the adjusting part 435. The height of the upper end surface of the adjusting part 435 increases in the direction away from the limiting groove 434. By providing the adjusting part 435, it can be ensured that when the guiding part 42 moves downward, the two guiding parts 421 smoothly fall into the two limiting grooves 434.

[0040] As Figures 2 to 5 shown, the lower end of the guiding part 42 extends to the lower side of the mixing cylinder 3. A movable plate 312 is longitudinally slidably connected in the liquid inlet passage 31. When the movable plate 312 is inside the liquid inlet passage 31, it blocks the liquid inlet passage 31. Specifically, a guiding groove is provided on the side wall of the liquid inlet passage 31 in the vertical direction, and a guiding rod 311 is fixed in the guiding groove. The length of the guiding rod 311 is greater than the length of the liquid inlet passage 31. Both ends of the guiding rod 311 extend to the outside of the liquid inlet passage 31. The movable plate 312 is slidably matched with the guiding rod 311. Springs are sleeved on both the upper and lower sides of the guiding rod 311 by the movable plate 312. When the movable plate 312 slides along the guiding rod 311, it squeezes the upper or lower spring and stores energy in the spring.

[0041] To further improve the stability of the relative sliding of the movable plate 312 with respect to the liquid inlet passage 31, two guiding grooves and two guiding rods 311 are provided. The movable plate 312 is movably abutted against the lower end of the guiding part 42. After the movable plate 312 moves upward to the upper side of the liquid inlet passage 31, it no longer blocks the liquid inlet passage 31 and is movably abutted against the guiding part 42. When the movable plate 312 continues to move upward, it pushes the guiding part 42 upward and makes the guiding part 421 disengage from the limiting groove 434, releasing the circumferential limit between the guiding part 42 and the adjusting part 43.

[0042] A movable part 313 is rotatably connected to the middle of the movable plate 312. The movable part 313 is slidably matched with the guiding shaft 41 in the vertical direction. The movable part 313 is movably abutted against the lower end of the guiding part 42, and the end face of the movable part 313 opposite to the guiding part 42 is a toothed surface. After the movable plate 312 moves upward until the movable part 313 abuts against the guiding part 42, the movable part 313 is relatively fixed to the guiding part 42, the movable part 313 is relatively fixed to the guiding shaft 41 in the circumferential direction, and the guiding part 42 and the cleaning part 4 both maintain a state of being relatively fixed to the guiding shaft 41.

[0043] When performing the extraction operation, two solvents are respectively added from the first liquid inlet 21 and the second liquid inlet 22. The two solvents enter the liquid inlet channel 31 and push the movable plate 312 to gradually move upward. When the movable plate 312 moves upward, it squeezes the spring on the upper side of the guide rod 311. After the movable part 313 of the movable plate 312 abuts against the lower end of the guide member 42, the guide member 42 moves upward synchronously with the movable plate 312, and the limit between the guide member 42 and the adjusting member 43 is released, and the guide member 42 no longer rotates synchronously with the adjusting member 43. The movable part 313 is relatively fixed to the guide member 42 in the circumferential direction, and both the guide member 42 and the cleaning member 4 are relatively fixed to the guide shaft 41 in the circumferential direction, so as to prevent the cleaning member 4 from affecting the extraction operation.

[0044] As Figure 4 and Figure 5 shown, to further prevent the cleaning member 4 from scratching the inner wall of the mixing cylinder 3 during the extraction process and reduce the wear of the mixing cylinder 3 caused by the relative rotation with the cleaning member 4 during the extraction operation. The cleaning member 4 includes a connecting portion 401 and a cleaning portion 402. The cleaning portion 402 is in an "L" shape. The connecting portion 401 is threadedly connected to the guide shaft 41. The cleaning portion 402 is elastically slidably connected to the connecting portion 401 in the horizontal direction, and the cleaning portion 402 and the connecting portion 401 can be connected by a compression spring. When the cleaning member 4 is not affected by an external force, the cleaning portion 402 abuts against the inner wall of the mixing cylinder 3 under the elastic force of the compression spring.

[0045] The cleaning portion 402 is also connected to the connecting portion 401 through a link structure. The link structure is used to limit the relative position between the cleaning portion 402 and the connecting portion 401. The link structure includes a first link 403, a second link 404, and a push rod 422. One end of the first link 403 is hinged to the connecting portion 401, the other end of the first link 403 is hinged to one end of the second link 404, the other end of the second link 404 is hinged to the cleaning portion 402, a push block 405 is provided in the middle of the first link 403, the push rod 422 is fixed to the guide member 42, and the push rod 422 abuts against the push block 405. During the extraction process, the solvent pushes the movable plate 312 upward, the movable part 313 moves upward with the movable plate 312 and abuts against the lower end face of the guide member 42, and pushes the guide member 42 upward. When the guide member 42 moves upward, the push rod 422 pushes the push block 405 upward, further pushing the first link 403 to rotate around its lower end. When the first link 403 rotates, it pulls the cleaning portion 402 to slide inward through the second link 404, so that the cleaning portion 402 is separated from the inner wall of the mixing cylinder 3, avoiding continuous friction between the cleaning portion 402 and the mixing cylinder 3 during the extraction process and reducing the wear of the mixing cylinder 3 during the working process. To prevent the push rod 422 from affecting the rotational upward movement of the cleaning member 4, a through groove for avoiding the push rod 422 is provided on the connecting portion 401.

[0046] After the extraction work is completed, it is necessary to clean the inner wall of the mixing cylinder 3 in a timely manner. During the cleaning operation, the cleaning liquid enters from the first liquid outlet 23 and the second liquid outlet 24. The cleaning liquid passes through the first liquid separation tank 32 and the second liquid separation tank 33 and enters the inside of the mixing cylinder 3. The flow direction of the cleaning liquid is avoided to push the movable plate 312 upward. The movable plate 312 is separated from the guiding member 42. The guiding member 42 moves downward under the action of gravity, and the guiding portion 421 is stuck in the limiting groove 434. The guiding member 42 is fixed circumferentially with the adjusting member 43, and the guiding member 42 rotates synchronously with the adjusting member 43 relative to the mixing cylinder 3 in the reverse direction. After the movable plate 312 is separated from the guiding member 42, the push rod 422 moves downward with the guiding member 42, and the cleaning portion 402 abuts against the inner wall of the mixing cylinder 3 again under the elastic force of the compression spring.

[0047] The cleaning member 4 rotates with the guiding member 42 and slides up and down along the guiding shaft 41 under the screw fit with the guiding shaft 41. By alternately switching the driving direction of the driving source 11, the reciprocating up and down sliding of the cleaning member 4 in the mixing cylinder 3 can be realized. The cleaning member 4 rotates and lifts while fitting the inner wall of the mixing cylinder 3, scraping and cleaning the residual solvent on the inner wall of the mixing cylinder 3, and stirring the cleaning liquid in the mixing cylinder 3 to promote the full contact between the cleaning liquid and the inner wall of the mixing cylinder 3, improving the cleaning effect of the mixing cylinder 3.

[0048] The cleaning liquid enters the mixing cylinder 3 from top to bottom, and when flowing to the bottom of the mixing cylinder 3, it pushes the movable plate 312 to fit and move down along the liquid inlet passage 31. When the movable plate 312 moves to the lower side of the liquid inlet passage 31, the cleaning liquid can enter the first liquid inlet 21 and the second liquid inlet 22 through the liquid inlet passage 31, and is further discharged and collected through the first liquid inlet 21 and the second liquid inlet 22.

[0049] The extraction and impurity removal device provided by the present invention is provided with a cleaning mechanism in the mixing cylinder, and by setting different liquid inlet directions in the extraction state and the cleaning state, the relative rotation state of the cleaning member in the mixing cylinder and the guiding shaft is flexibly adjusted. After the extraction work is completed, the cleaning member rotates and lifts while fitting the inner wall of the mixing cylinder to clean the mixing cylinder, effectively ensuring the cleaning effect of the mixing cylinder.

[0050] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An extraction and impurity removal device, comprising a frame body, a housing fixedly arranged on the frame body, and a mixing cylinder arranged inside the housing, wherein the mixing cylinder is connected with a driving structure for driving the mixing cylinder to rotate, and is characterized in that, The lower end of the housing is provided with a first liquid inlet and a second liquid inlet, the upper end of the housing is provided with a first liquid outlet and a second liquid outlet, the lower end of the mixing cylinder is provided with a liquid inlet channel that simultaneously communicates with the first liquid inlet and the second liquid inlet, the upper end of the mixing cylinder is provided with a first liquid separation tank communicating with the first liquid outlet and a second liquid separation tank communicating with the second liquid outlet. Taking the side facing the axis of the mixing cylinder as the inner side, the liquid inlet end of the first liquid separation tank is located outside the liquid inlet end of the second liquid separation tank; a cleaning mechanism is arranged inside the mixing cylinder, and the cleaning mechanism includes a guiding shaft, a cleaning part and an adjusting component. The guiding shaft is coaxially arranged with the mixing cylinder, the lower end of the guiding shaft is fixed to the housing, the cleaning part is in threaded connection with the guiding shaft, and the adjusting component is used to adjust the relative rotation state of the cleaning part and the guiding shaft; The adjusting component includes an adjusting part, a guiding part and a transmission structure. A connecting seat is fixed to the upper end of the guiding shaft, the connecting seat is rotationally matched with the mixing cylinder, the adjusting part is rotationally matched with the connecting seat, the mixing cylinder is connected to the adjusting part through the transmission structure, and the adjusting part rotates in the opposite direction relative to the mixing cylinder; a limiting groove is arranged inside the adjusting part, the upper end of the guiding part is movably inserted and matched with the limiting groove, and the guiding part is fixed relative to the adjusting part when inserted into the limiting groove; The upper end of the guiding part is provided with a part extending between the guiding shaft and the adjusting part, and a guiding portion is fixed to the guiding part, and the guiding portion is movably inserted into the limiting groove; The liquid inlet channel is provided with a guiding groove in the vertical direction, a guiding rod is fixed in the guiding groove, both ends of the guiding rod respectively extend to the upper and lower sides of the liquid inlet channel, a movable plate that is slidably matched with the guiding rod is arranged in the liquid inlet channel, the movable plate is elastically connected to the guiding rod on its upper and lower sides, a movable part is rotatably connected to the middle of the movable plate, the movable part is movably abutted against the lower end of the guiding part, and the movable part is relatively fixed when abutted against the guiding part.

2. The extraction and impurity removal device according to claim 1, characterized in that There are two limiting grooves and two guiding portions. The two guiding portions are movably opposite to the two limiting grooves, and the two limiting grooves are connected by an adjusting portion, and the height of the adjusting portion increases in the direction away from the limiting groove.

3. The extraction and impurity removal device according to claim 1, characterized in that, The movable part is slidably matched with the guiding shaft in the vertical direction, and the end faces of the movable part opposite to the guiding part are both tooth-shaped surfaces.

4. The extraction and impurity removal device according to claim 1, characterized in that, The transmission structure includes a toothed ring, a gear and a tooth portion. The toothed ring is fixed to the top of the mixing cylinder, the toothed ring is coaxially arranged with the mixing cylinder, the gear is rotationally matched with the connecting seat, the tooth portion is arranged on the outer peripheral side of the adjusting part, and the gear is meshed with both the toothed ring and the tooth portion.

5. The extraction and impurity removal device according to claim 1, characterized in that, The cleaning part includes a connecting portion and a cleaning portion. The connecting portion is in threaded connection with the guiding shaft, the cleaning portion is elastically slidably connected to the connecting portion in the horizontal direction, and the cleaning portion is further connected to the connecting portion through a connecting rod structure, and the connecting rod structure is used to limit the relative position of the cleaning portion and the connecting portion.

6. The extraction and impurity removal device according to claim 5, characterized in that, The connecting rod structure includes a first connecting rod, a second connecting rod and a push rod. One end of the first connecting rod is hinged to the connecting portion, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to the cleaning portion, a pushing block is provided in the middle of the first connecting rod, the push rod is fixed to the guiding member, and the push rod abuts against the pushing block.

7. The extraction and impurity removal device according to claim 1, wherein, The driving structure includes a driving source and a driving shaft. The driving source is installed on the housing, the driving end of the driving source is connected to the driving shaft, and the driving shaft is fixed to the mixing cylinder.

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