Methanol recovery system and method for mixed solution in pharmaceutical production

Abstract

The application discloses a kind of mixed liquor methanol recovery system and method in pharmaceutical production, including load floor, the top of the load floor is equipped with for methanol stratification stratification mechanism, and the upper portion of stratification mechanism is equipped with for methanol distillation distillation mechanism, the stratification mechanism includes mixed liquor stratification tank, and mixed liquor stratification tank is fixedly installed on the top of load floor by support, the top of the load floor and below mixed liquor stratification tank Fixedly connected with methanol storage tank, the present application relates to methanol recovery technical field.This mixed liquor methanol recovery system and method in pharmaceutical production, by combination of stratification mechanism and distillation mechanism, can be extracted twice to mixed liquor, first utilize distillation mechanism to carry out distillation and vaporize most of methanol then utilize stratification mechanism again separate methanol in remaining mixed liquor, this process utilizes heat exchange liquid tank to increase vapor condensation speed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of methanol recovery, in particular to a mixed liquid methanol recovery system and method in pharmaceutical production. BACKGROUND

[0002] The pharmaceutical manufacturing industry refers to the process of raw materials becoming new pharmaceutical products through physical or chemical changes, including the manufacture of traditional Chinese medicine and western medicine, and veterinary drugs also include pharmaceutical raw materials and health materials.

[0003] At present, methanol is one of the common and large demand raw materials in the pharmaceutical process, and in actual production, methanol is usually mixed with water and other liquids for use, and the excess residual mixed liquid is directly poured into the waste liquid tank for subsequent unified treatment. Since the mixed liquid also contains a large amount of methanol, in order to reduce costs, the methanol in the mixed liquid will be recovered, and the existing recovery method is mostly to separate the methanol in advance by heating distillation, which can effectively recover, but this method still has certain defects, such as:

[0004] Generally, when the mixed liquid is heated and distilled, the methanol vaporizes and can only be naturally condensed in the cooling pipe, and then stored. This condensation method results in low methanol storage efficiency and requires a long waiting time, and after the methanol vapor rises, it cannot all enter the pipe, most of it will condense on the inner wall of the heating tank and then drip into the mixed liquid, resulting in the need for repeated heating and vaporization, thereby wasting energy;

[0005] Therefore, a mixed liquid methanol recovery system in pharmaceutical production is designed to improve the recovery efficiency and quality of methanol in the mixed liquid to solve such defects. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides a mixed liquid methanol recovery system and method in pharmaceutical production, which solves the problem of long heating time and low condensation efficiency in current methanol recovery.

[0007] To achieve the above purpose, the present application realizes the following technical scheme: a mixed liquid methanol recovery system in pharmaceutical production, comprising a load-bearing bottom plate, a layering mechanism for layering methanol is installed on the top of the load-bearing bottom plate, and a distillation mechanism for methanol distillation is arranged on the upper part of the layering mechanism.

[0008] Preferably, the layered mechanism comprises a mixed liquid layered tank, and the mixed liquid layered tank is fixedly installed on the top of the load-bearing bottom plate through a support, a methanol storage tank is fixedly connected to the top of the load-bearing bottom plate and below the mixed liquid layered tank, a second liquid discharge pipe is in communication between the mixed liquid layered tank and the methanol storage tank, a first liquid discharge pipe is fixedly installed on the left side of the bottom of the mixed liquid layered tank through an opening, and a first electromagnetic valve and a second electromagnetic valve are fixedly installed on the surfaces of the first liquid discharge pipe and the second liquid discharge pipe, respectively.

[0009] Preferably, the upper part of the left side of the mixed liquid layered tank is fixedly connected with a limiting guide slide rod, a connecting cross plate is slidingly installed on the surface of the limiting guide slide rod, a guide sliding opening that cooperates with the limiting guide slide rod is formed in the top of the connecting cross plate, a first threaded rod is screw-connected through an opening on the left side of the top of the connecting cross plate, the bottom end of the first threaded rod penetrates through the mixed liquid layered tank and extends to the inside of the mixed liquid layered tank, a first floating plate is rotatably connected to one end of the first threaded rod that extends into the inner cavity of the mixed liquid layered tank through a bearing piece, and an upper jacking rod is fixedly connected to the right side of the top of the connecting cross plate.

[0010] Preferably, the rear part of the mixed liquid layered tank is fixedly connected with a liquid storage tank through a fixed plate, a rectangular sealing box is fixedly connected to the bottom of the liquid storage tank, a leakage prevention fitting seat is slidingly installed on the inside of the rectangular sealing box, storage grooves are formed in the top and bottom of the leakage prevention fitting seat, a discharging opening that penetrates into the inside of the rectangular sealing box is formed in the bottom of the liquid storage tank and cooperates with the storage grooves, a plugging plate that cooperates with the discharging opening is fixedly connected to the left side of the leakage prevention fitting seat, the left end of the plugging plate penetrates through the rectangular sealing box and extends to the left side of the rectangular sealing box, and a feeding pipe is in communication between the bottom of the rectangular sealing box and the mixed liquid layered tank.

[0011] Preferably, a bent pull rod is fixedly connected to the right side of the leakage prevention fitting seat, one end of the bent pull rod penetrates through the rectangular sealing box and extends to the left side of the rectangular sealing box, a first toothed plate is fixedly connected to the end of the bent pull rod that extends to the left side of the rectangular sealing box, a gear cylinder that engages with the first toothed plate is rotatably connected to the left side of the mixed liquid layered tank through a bearing piece, a second toothed plate that engages with the gear cylinder is fixedly connected to the rear side of the connecting cross plate through a fixed block, and a first button that cooperates with the connecting cross plate is fixedly connected to the left side of the mixed liquid layered tank through a fixed plate.

[0012] Preferably, the distillation mechanism comprises a heating distillation box, and the heating distillation box is fixedly installed on the upper portion of the mixed liquid layering box through a support, the top of the heating distillation box is slidably installed with a square vertical slide rod through an opening, the inner side of the square vertical slide rod is threadedly connected with a second threaded rod, and the bottom end of the second threaded rod is rotatably connected with a second floating plate through a bearing piece, the left side of the square vertical slide rod is fixedly connected with an L-shaped pressing rod, the lower portion of the surface of the L-shaped pressing rod is fixedly connected with a lifting top plate, the left side of the bottom of the lifting top plate is installed with a third button, the left side of the heating distillation box is fixedly connected with a device plate, the right side of the top of the device plate is fixedly installed with a second button which is used in cooperation with the lifting top plate, and the left side of the top of the device plate is provided with a guide opening which is used in cooperation with the upper top rod.

[0013] Preferably, the rear side of the top of the heating distillation box is fixedly connected with a heater through a fixed plate, the bottom of the heater is fixedly installed with a heating rod, and the bottom end of the heating rod penetrates through the heating distillation box and extends to the inner side of the heating distillation box, and a third liquid discharge pipe is communicated between the heating distillation box and the mixed liquid layering box, and the surface of the third liquid discharge pipe is fixedly installed with a third electromagnetic valve.

[0014] Preferably, the right side of the heating distillation box is fixedly connected with a heat exchange liquid passing box through a support, the right side of the top of the load-bearing bottom plate is fixedly connected with a methanol storage tank, the right side of the heating distillation box is fixedly connected with a condensing guide pipe through an opening, the right end of the condensing guide pipe penetrates through the heat exchange liquid passing box and the methanol storage tank in sequence and extends to the inner side of the methanol storage tank, the top of the heat exchange liquid passing box is fixedly installed with a liquid pumping pump, the water outlet and the water inlet of the liquid pumping pump are both connected with a liquid pumping pipe, and the opposite ends of the two second buttons are respectively communicated with the heating distillation box and the heat exchange liquid passing box.

[0015] The application further discloses a mixed liquid methanol recovery method in pharmaceutical production, and specifically comprises the following steps.

[0016] S1, before use, the inside of the liquid storage tank is first injected with ether, then the mixed liquid is continuously injected into the inside of the heat exchange liquid passing box through a pipeline, then the height of the second floating plate is adjusted by rotating the second threaded rod to limit the injection amount of the mixed liquid, then the height of the first floating plate is adjusted according to the ratio of methanol to water in the mixed liquid by rotating the first threaded rod, and after preparation is completed, the step S2 is turned to.

[0017] S2, first start the pump through the liquid extraction tube into the heat exchange liquid tank inside the mixed liquid into the heating distillation tank inside, after the mixed liquid injection heating distillation tank inside a certain height by the second floating plate L type pressure rod top, then the pump stops, then start the heater using heating rod on the mixed liquid inside the heating distillation tank heating, the temperature is maintained at 80 degrees Celsius, because the boiling point of methanol in sixty four degrees Celsius, thus the mixed liquid in the methanol will first boil vaporization, and water is just heating, vaporized methanol into the condenser pipe inside, when the mixed liquid for low temperature heat exchange liquid tank inside the mixed liquid to speed up the condensation of the methanol and then flow into the methanol storage tank for storage, after the mixed liquid is reduced, when the second floating plate also follow the decline, until the L type pressure bar press the second button, at this time the mixed liquid inside the methanol has extremely rare, mostly water, and the second button trigger open third solenoid valve let the remaining mixed liquid through the third liquid discharge pipe into the mixed liquid layer tank inside, third solenoid valve by pre setting open 10 seconds after automatic closing and then pump again injection, at the same time, the mixed liquid into the mixed liquid layer tank can't fill the inside need S2 step repeat, after the mixed liquid layer tank full to S3 step;

[0018] S3, after S2 step repeat several times after the mixed liquid layer tank inside full, the first floating plate by the buoyancy of the first screw rod, connecting plate and the top rod together, the top rod first through the guide hole and lifting plate contact with the L type pressure bar and press the third button to close the whole distillation mechanism and not with the second button again, so after the heating distillation tank inside the liquid is completely discharged, at this time the whole distillation mechanism for stop running state, and the connecting plate in the process of rising will also drive the second gear plate to rise and make the gear cylinder rotate, the gear cylinder rotation will drive the first gear plate to move until the limit position of the leakage fitting seat moves to the storage tank and the feeding pipe coincide, at this time the ether in the storage tank through the feeding pipe into the mixed liquid layer tank inside and mixed with the mixed liquid, then stand, after the ether and mixed liquid reaction will methanol and water layer, because the realization of the proportion of data and heating distillation tank inside the remaining water, the height of the first floating plate is located at the bottom of the methanol layer high one centimeter, then open the first solenoid valve by artificial first bottom water discharge, until the water is finished to reach the methanol layer when the connecting plate will trigger the first button, the first solenoid valve closes the second solenoid valve opens the remaining methanol into the methanol storage tank, and in the process of connecting plate down, the top rod and the third button is separated again to start the whole distillation mechanism, after the L type pressure bar press the second button again, the whole distillation mechanism again input distillation, at the same time, the second gear plate will drive the gear cylinder reverse to push the leakage fitting seat to move again to coincide with the storage tank and the discharge port, the ether in the storage tank into the storage tank, then repeat S2 step and S3 step again.

[0019] Preferably, the S3 step is to block the outlet to prevent the ether from leaking out after the blocking plate enters the rectangular sealing box.

[0020] The application provides a mixed liquid methanol recovery system and method in pharmaceutical production.

[0021] (1) The mixed liquid methanol recovery system in pharmaceutical production is combined with the layering mechanism and the distillation mechanism, can extract the mixed liquid twice, first distills the mixed liquid by the distillation mechanism to vaporize most of the methanol, then separates the methanol in the remaining mixed liquid by the layering mechanism, the process increases the vapor condensation speed by the heat exchange liquid tank to improve the efficiency, and controls the distillation mechanism by the buoyancy when the layering mechanism operates to reduce the manual intervention and facilitate the use.

[0022] (2) The mixed liquid methanol recovery system in pharmaceutical production is provided with an L-shaped pressing rod and an upper ejector rod on the left side of the mixed liquid layering tank and the heating distillation tank, and is used in combination with a first button, a second button and a third button, the arrangement of these structures can complete the conversion of the remaining liquid and the re-liquid injection by the continuous evaporation of the mixed liquid, and can start the secondary extraction after the liquid replacement is completed, realizes the automation of the equipment, improves the recovery efficiency and reduces the complexity of the operation.

[0023] (3) The mixed liquid methanol recovery system in pharmaceutical production is provided with a liquid storage tank at the rear of the mixed liquid layering tank, a rectangular sealing box and a leak-proof fitting seat at the bottom, and is used in combination with a first toothed plate, a gear cylinder and a second toothed plate, the arrangement of these structures can add ether to the mixed liquid by driving the leak-proof fitting seat after the mixed liquid layering tank is filled with mixed liquid, and the setting of the storage tank can ensure that the addition is quantitative each time, which can provide convenience for the staff and ensure the stability of the secondary extraction. DETAILED DESCRIPTION

[0024] Figure 1 It is a structural schematic diagram of the application;

[0025] Figure 2 It is a sectional view of the mixed liquid layering tank, the heating distillation tank and the heat exchange liquid tank structure of the application;

[0026] Figure 3 It is a side view of the mixed liquid layering tank and the heating distillation tank structure of the application;

[0027] Figure 4 It is a structural schematic diagram of the application; Figure 3 It is a local enlarged view of A in the application;

[0028] Figure 5 It is a structural schematic diagram of the square vertical sliding rod, the second threaded rod and the second floating plate structure of the application;

[0029] Figure 6 It is the schematic view of the connecting cross plate, guide sliding port and first threaded rod structure of the application;

[0030] Figure 7 It is the schematic view of the sealing plate, feeding pipe and bent pull rod structure of the application;

[0031] Figure 8 It is the schematic view of the liquid storage tank and rectangular sealing box structure of the application;

[0032] Figure 9 It is the schematic view of the leak-proof fitting seat, storage tank and sealing plate structure of the application.

[0033] In the figure: 1, bearing bottom plate; 2, layering mechanism; 3, distillation mechanism; 201, mixed liquid layering tank; 202, methanol storage tank; 203, first liquid discharge pipe; 204, second liquid discharge pipe; 205, first electromagnetic valve; 206, second electromagnetic valve; 207, limiting guide sliding rod; 208, connecting cross plate; 209, guide sliding port; 210, first threaded rod; 211, first floating plate; 212, upper top rod; 213, liquid storage tank; 214, rectangular sealing box; 215, leak-proof fitting seat; 216, storage tank; 217, discharge port; 218, sealing plate; 219, feeding pipe; 220, bent pull rod; 221, first toothed plate; 222, gear cylinder; 223, second toothed plate; 224, first button; 301, heating distillation tank; 302, square vertical sliding rod; 303, second threaded rod; 304, second floating plate; 305, L-shaped pressing rod; 306, lifting top plate; 307, device plate; 308, second button; 309, guide port; 310, heater; 311, heating rod; 312, third liquid discharge pipe; 313, third electromagnetic valve; 314, heat exchange liquid passing tank; 315, methanol storage tank; 316, condensing conduit; 317, liquid pumping pump; 318, liquid pumping pipe; 319, third button. Embodiment

[0034] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application.

[0035] Please refer to Figures 1-9 , the application provides a technical solution: a mixed liquid methanol recovery system in pharmaceutical production, comprising a bearing bottom plate 1, the top of the bearing bottom plate 1 is provided with a layering mechanism 2 for methanol layering, and the upper part of the layering mechanism 2 is provided with a distillation mechanism 3 for methanol distillation.

[0036] Please refer to Figure 6 , Figure 7 , Figure 8 and Figure 9The whole structure of the layered mechanism 2 is shown, the layered mechanism 2 comprises a mixed liquid layering tank 201, and the mixed liquid layering tank 201 is fixedly installed on the top of the load-bearing bottom plate 1 through a support, the top of the load-bearing bottom plate 1 and below the mixed liquid layering tank 201 are fixedly connected with a methanol storage tank 202, the mixed liquid layering tank 201 and the methanol storage tank 202 are communicated with a second liquid discharge pipe 204, the left side of the bottom of the mixed liquid layering tank 201 is fixedly installed with a first liquid discharge pipe 203 through an opening, and the surfaces of the first liquid discharge pipe 203 and the second liquid discharge pipe 204 are fixedly installed with a first electromagnetic valve 205 and a second electromagnetic valve 206 respectively, the upper part of the left side of the mixed liquid layering tank 201 is fixedly connected with a limiting guide sliding rod 207, the surface of the limiting guide sliding rod 207 is slidingly installed with a connecting horizontal plate 208, and the top of the connecting horizontal plate 208 is provided with a guide sliding opening 209 matched with the limiting guide sliding rod 207, the left side of the top of the connecting horizontal plate 208 is threadedly connected with a first threaded rod 210 through an opening, the first threaded rod 210 is not connected with the mixed liquid layering tank 201, and the bottom end of the first threaded rod 210 penetrates through the mixed liquid layering tank 201 and extends to the inside of the mixed liquid layering tank 201, one end of the first threaded rod 210 extending to the inner cavity of the mixed liquid layering tank 201 is rotatably connected with a first floating plate 211 through a bearing piece, the right side of the top of the connecting horizontal plate 208 is fixedly connected with an upper top rod 212, the rear part of the mixed liquid layering tank 201 is fixedly connected with a liquid storage tank 213 through a fixed plate, the bottom of the liquid storage tank 213 is fixedly connected with a rectangular sealing box 214, the inside of the rectangular sealing box 214 is slidingly installed with a leakage prevention fitting seat 215, the leakage prevention fitting seat 215 is fitted with the rectangular sealing box 214 but the surface is smooth and can be easily slid, the top and the bottom of the leakage prevention fitting seat 215 are both provided with a storage groove 216, the bottom of the liquid storage tank 213 is provided with a discharging opening 217 penetrating into the inside of the rectangular sealing box 214, and the discharging opening 217 is matched with the storage groove 216, the left side of the leakage prevention fitting seat 215 is fixedly connected with a blocking plate 218 matched with the discharging opening 217, the blocking plate 218 blocks the discharging opening 217 after entering the rectangular sealing box 214 to prevent the leakage of ether, and the left end of the blocking plate 218 penetrates through the rectangular sealing box 214 and extends to the left side of the rectangular sealing box 214, the bottom of the rectangular sealing box 214 and the mixed liquid layering tank 201 are communicated with a feeding pipe 219, the right side of the leakage prevention fitting seat 215 is fixedly connected with a bent pull rod 220, one end of the bent pull rod 220 penetrates through the rectangular sealing box 214 and extends to the left side of the rectangular sealing box 214, and one end of the bent pull rod 220 extending to the left side of the rectangular sealing box 214 is fixedly connected with a first toothed plate 221, the left side of the mixed liquid layering tank 201 is rotatably connected with a gear cylinder 222 engaged with the first toothed plate 221 through a bearing piece, the rear side of the connecting horizontal plate 208 is fixedly connected with a second toothed plate 223 engaged with the gear cylinder 222 through a fixed block,The left side of the mixed liquid layering box 201 is fixedly connected with a first button 224 used in cooperation with the connecting horizontal plate 208.

[0037] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , which shows the structure of the distillation mechanism 3 as a whole, the distillation mechanism 3 comprising a heating distillation box 301, and the heating distillation box 301 is fixedly installed on the upper part of the mixed liquid layering box 201 through a support, the top of the heating distillation box 301 is slidingly installed with a square vertical slide rod 302 through an opening, the inner side of the square vertical slide rod 302 is threadedly connected with a second threaded rod 303, and the bottom end of the second threaded rod 303 is rotatably connected with a second floating plate 304 through a bearing piece, the buoyancy of the second floating plate 304 is smaller than that of the first floating plate 211, the left side of the square vertical slide rod 302 is fixedly connected with an L-shaped pressing rod 305, the surface of the L-shaped pressing rod 305 is fixedly connected with a lifting top plate 306 at the lower part, the left side of the bottom of the lifting top plate 306 is installed with a third button 319, the third button 319 is used to close the distillation mechanism 3 as a whole, the left side of the heating distillation box 301 is fixedly connected with a device plate 307, the right side of the top of the device plate 307 is fixedly installed with a second button 308 used in cooperation with the lifting top plate 306, the left side of the top of the device plate 307 is provided with a guide hole 309 used in cooperation with the upper top rod 212, the rear side of the top of the heating distillation box 301 is fixedly connected with a heater 310 through a fixed plate, the bottom of the heater 310 is fixedly installed with a heating rod 311, and the bottom end of the heating rod 311 penetrates through the heating distillation box 301 and extends to the inner side of the heating distillation box 301, the third liquid discharge pipe 312 is communicated between the heating distillation box 301 and the mixed liquid layering box 201, the surface of the third liquid discharge pipe 312 is fixedly installed with a third electromagnetic valve 313, the right side of the heating distillation box 301 is fixedly connected with a heat exchange liquid passing box 314 through a support, the right side of the top of the load-bearing bottom plate 1 is fixedly connected with a methanol storage tank 315, the right side of the heating distillation box 301 is fixedly connected with a condensing guide pipe 316 through an opening, and the right end of the condensing guide pipe 316 penetrates through the heat exchange liquid passing box 314 and the methanol storage tank 315 in sequence and extends to the inner side of the methanol storage tank 315, the top of the heat exchange liquid passing box 314 is fixedly installed with a liquid pumping pump 317, the water outlet and the water inlet of the liquid pumping pump 317 are both connected with a liquid pumping pipe 318, and the opposite ends of the two second buttons 308 are respectively communicated with the heating distillation box 301 and the heat exchange liquid passing box 314.

[0038] The application also discloses a mixed liquid methanol recovery method in pharmaceutical production, and specifically comprises the following steps.

[0039] S1, before use, first into the liquid tank 213 of the inside injection of ether, then using the pipeline will be mixed liquid injection heat over liquid tank 314 inside, then rotate the second screw rod 303 adjusting the height of the second floating plate 304 for the injection of mixed liquid to limit the amount, then according to the proportion of methanol and water in the mixed liquid also rotate the first screw rod 210 adjusting the height of the first floating plate 211, after preparation is complete to S2 step;

[0040] S2, first start the pump 317 through the liquid pipe 318 will heat over liquid tank 314 inside the mixed liquid into the heating distillation tank 301 inside, after the mixed liquid in the heating distillation tank 301 injection to a certain height through the second floating plate 304 will L type pressure bar 305 top, then the pump 317 stop, then start the heater 310 using heating rod 311 on the mixed liquid in the heating distillation tank 301 heating, temperature is maintained at eighty degrees Celsius, because the boiling point of methanol in sixty four degrees Celsius, therefore the methanol in the mixed liquid will first boil vaporization, and water is just heating, vaporized methanol into the inside of the condenser pipe 316, through the heat over liquid tank 314 when the mixed liquid in the heat over liquid tank 314 inside low temperature to accelerate the condensation of methanol and then flow into the methanol storage tank 315 for storage, after the mixed liquid is constantly reduced when the decline, the second floating plate 304 also follow down, until the L type pressure bar 305 press the second button 308, at this time the methanol inside the mixed liquid has extremely rare, mostly for water, and the second button 308 trigger open the third electromagnetic valve 313 let the remaining mixed liquid through the third liquid discharge pipe 312 into the mixed liquid layering tank 201 inside, the third electromagnetic valve 313 through the pre setting open ten seconds after automatic closing then pump 317 again for injection, at the same time the mixed liquid into the mixed liquid layering tank 201 can't fill the inside need S2 step for repeat, after the mixed liquid layering tank 201 fill in to S3 step;

[0041] S3, after the step S2 repeats several times, the inside of the mixed liquid layering box 201 is full, the first floating plate 211 is lifted by the buoyancy to lift the first threaded rod 210, the connecting horizontal plate 208 and the upper top rod 212, the upper top rod 212 first passes through the guide hole 309 and contacts the lifting top plate 306 to lift the L-shaped pressing rod 305 and press the third button 319 to close the whole distillation mechanism 3 and not contact the second button 308 again, so that the liquid in the inside of the heated distillation box 301 is completely discharged, at this time the whole distillation mechanism 3 is in a stop running state, and the connecting horizontal plate 208 also drives the second toothed plate 223 to rise in the process of rising to rotate the gear cylinder 222, the gear cylinder 222 rotates to drive the leak-proof fitting seat 215 to move through the first toothed plate 221 until the leak-proof fitting seat 215 moves to the limit position, the storage tank 216 and the feeding pipe 219 are overlapped at this time, the diethyl ether in the inside of the storage tank 216 enters the inside of the mixed liquid layering box 201 through the feeding pipe 219 and mixes with the mixed liquid, then it is placed, after the diethyl ether and the mixed liquid react, the methanol and water are layered, due to the realized proportion data and the remaining water quantity in the inside of the heated distillation box 301, the height of the first floating plate 211 is located at the bottom of the methanol layer with a height of one centimeter, then the first electromagnetic valve 205 is opened manually to discharge the bottom water, until the water is discharged to the methanol layer, the connecting horizontal plate 208 triggers the first button 224, the first electromagnetic valve 205 closes the second electromagnetic valve 206 to open to discharge the remaining methanol into the methanol storage tank 202, and in the process of descending of the connecting horizontal plate 208, the upper top rod 212 and the third button 319 are separated to restart the whole distillation mechanism 3, after the L-shaped pressing rod 305 presses the second button 308 again, the whole distillation mechanism 3 is inputted and distilled again, and the second toothed plate 223 drives the gear cylinder 222 to reverse to push the leak-proof fitting seat 215 to move again to overlap the storage tank 216 and the discharge port 217, the diethyl ether in the inside of the liquid storage tank 213 enters the inside of the storage tank 216, then the step S2 and the step S3 are repeated again.

[0042] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit the present application. Although the present application has been described in detail with reference to the above embodiments, the present application is not limited to the above specific embodiments, and any modification or equivalent replacement of the present application; and all technical solutions and improvements without departing from the spirit and scope of the present application are covered in the scope of claims of the present application.

[0043] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art in the technical range disclosed by the present application, according to the technical solutions and the inventive concept of the present application, equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A methanol recovery system for use in pharmaceutical production, comprising a load-bearing floor (1), characterized in that: The top of the load-bearing base plate (1) is equipped with a layering mechanism (2) for methanol layering, and a distillation mechanism (3) for methanol distillation is provided on the upper part of the layering mechanism (2). The layering mechanism (2) includes a liquid layering tank (201), which is fixedly installed on the top of the load-bearing base plate (1) by a bracket. A methanol storage tank (202) is fixedly connected to the top of the load-bearing base plate (1) and below the liquid layering tank (201). A second drain pipe (204) is connected between the liquid layering tank (201) and the methanol storage tank (202). A first drain pipe (203) is fixedly installed on the left side of the bottom of the liquid layering tank (201) by opening. A first solenoid valve (205) and a second solenoid valve (206) are fixedly installed on the surfaces of the first drain pipe (203) and the second drain pipe (204), respectively. A limiting guide rod (207) is fixedly connected to the upper left side of the mixing liquid stratification tank (201). A connecting horizontal plate (208) is slidably installed on the surface of the limiting guide rod (207). A guide port (209) is opened at the top of the connecting horizontal plate (208) to cooperate with the limiting guide rod (207). A first threaded rod (210) is connected to the left side of the top of the connecting horizontal plate (208) by opening a thread. The bottom end of the first threaded rod (210) penetrates the mixing liquid stratification tank (201) and extends to the inner side of the mixing liquid stratification tank (201). One end of the first threaded rod (210) extending into the inner cavity of the mixing liquid stratification tank (201) is rotatably connected to a first float plate (211) through a bearing. An upper top rod (212) is fixedly connected to the right side of the top of the connecting horizontal plate (208). The distillation mechanism (3) includes a heated distillation tank (301), which is fixedly installed on the upper part of the mixed liquid stratification tank (201) by a bracket. A square vertical slide rod (302) is slidably installed on the top of the heated distillation tank (301) through an opening. A second threaded rod (303) is threadedly connected to the inner side of the square vertical slide rod (302), and a second float plate (304) is rotatably connected to the bottom end of the second threaded rod (303) through a bearing. An L-shaped pressure rod is fixedly connected to the left side of the square vertical slide rod (302). (305) A lifting top plate (306) is fixedly connected to the lower part of the surface of the L-shaped pressure rod (305). A third button (319) is installed on the left side of the bottom of the lifting top plate (306). A device plate (307) is fixedly connected to the left side of the heating distillation tank (301). A second button (308) that works in conjunction with the lifting top plate (306) is fixedly installed on the right side of the top of the device plate (307). A guide port (309) that works in conjunction with the upper push rod (212) is opened on the left side of the top of the device plate (307).

2. The methanol recovery system for mixing liquid in pharmaceutical production according to claim 1, characterized in that: The rear part of the mixed liquid layering box (201) is fixedly connected with a liquid storage tank (213) through a fixed plate, the bottom of the liquid storage tank (213) is fixedly connected with a rectangular sealing box (214), the inner side of the rectangular sealing box (214) is slidably installed with a leakage-proof fitting seat (215), the top and bottom of the leakage-proof fitting seat (215) are both provided with a storage groove (216), the bottom of the liquid storage tank (213) is provided with a discharging port (217) penetrating into the inside of the rectangular sealing box (214), and the discharging port (217) is used in cooperation with the storage groove (216), the left side of the leakage-proof fitting seat (215) is fixedly connected with a plugging plate (218) used in cooperation with the discharging port (217), and the left end of the plugging plate (218) penetrates through the rectangular sealing box (214) and extends to the left side of the rectangular sealing box (214), and the bottom of the rectangular sealing box (214) is in communication with the mixed liquid layering box (201) through a feeding pipe (219).

3. The methanol recovery system for mixing liquid in pharmaceutical production according to claim 2, characterized in that: The right side of the leakage-proof fitting seat (215) is fixedly connected with a bent pull rod (220), one end of the bent pull rod (220) penetrates through the rectangular sealing box (214) and extends to the left side of the rectangular sealing box (214), and the end of the bent pull rod (220) extending to the left side of the rectangular sealing box (214) is fixedly connected with a first toothed plate (221), and the left side of the mixed liquid layering box (201) is rotatably connected with a gear cylinder (222) engaged with the first toothed plate (221) through a bearing piece, the rear side of the connecting cross plate (208) is fixedly connected with a second toothed plate (223) engaged with the gear cylinder (222) through a fixed block, and the left side of the mixed liquid layering box (201) is fixedly connected with a first button (224) used in cooperation with the connecting cross plate (208) through a fixed plate.

4. The methanol recovery system for mixing liquid in pharmaceutical production according to claim 3, characterized in that: The rear side of the top of the heating distillation tank (301) is fixedly connected with a heater (310) through a fixed plate, the bottom of the heater (310) is fixedly installed with a heating rod (311), and the bottom end of the heating rod (311) penetrates through the heating distillation tank (301) and extends to the inside of the heating distillation tank (301), the heating distillation tank (301) and the mixed liquid layering box (201) are in communication through a third liquid discharge pipe (312), and the surface of the third liquid discharge pipe (312) is fixedly installed with a third electromagnetic valve (313).

5. The methanol recovery system for mixing liquid in pharmaceutical production according to claim 4, characterized in that: The right side of the heating distillation box (301) is fixedly connected with a heat exchange liquid passing box (314) through a support, the right side of the top of the load bearing floor (1) is fixedly connected with a methanol storage tank (315), the right side of the heating distillation box (301) is fixedly connected with a condensation conduit (316) through an opening, and the right end of the condensation conduit (316) successively penetrates the heat exchange liquid passing box (314) and the methanol storage tank (315) and extends to the inside of the methanol storage tank (315), the top of the heat exchange liquid passing box (314) is fixedly installed with a liquid pumping pump (317), the water outlet and the water inlet of the liquid pumping pump (317) are both connected with a liquid pumping pipe (318), and the two ends of the liquid pumping pipe (318) are respectively connected with the heating distillation box (301) and the heat exchange liquid passing box (314) in communication.

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