阅读说明：本技术 一种氨基酸浓缩高效提取系统 (High-efficient extraction system of amino acid concentration ) 是由 王明丽 徐娟 代卓莹 于 2021-08-28 设计创作，主要内容包括：本发明属于氨基酸提取技术领域,具体的说是一种氨基酸浓缩高效提取系统,包括第一效蒸发器、第二效蒸发器和第三效蒸发器,第一效蒸发器、第二效蒸发器和第三效蒸发器为相同的蒸发罐,蒸发罐包括控制器、罐体、进料口、蒸汽进入口、加热管、冷凝液排出口、排料口和蒸汽排出口；现有技术中,并流加料中后效温度较低,降低了传热系数,逆流加料中须用流体泵,使装置复杂化,本发明中将第三效蒸发器与热蒸汽源连通,后效中的温度有所提高,克服了并流加料系统传热系数低和传热面积大的问题,第一效和第二效采用并流加料,减少流体泵的使用,相较于逆流加料系统简化了结构。(The invention belongs to the technical field of amino acid extraction, and particularly relates to an amino acid concentration efficient extraction system which comprises a first-effect evaporator, a second-effect evaporator and a third-effect evaporator, wherein the first-effect evaporator, the second-effect evaporator and the third-effect evaporator are identical evaporation tanks, and each evaporation tank comprises a controller, a tank body, a feed inlet, a steam inlet, a heating pipe, a condensate discharge port, a discharge port and a steam discharge port; in the prior art, the aftereffect temperature in parallel flow charging is low, the heat transfer coefficient is reduced, and a fluid pump is required in countercurrent charging, so that the device is complicated.)

1. An amino acid concentration efficient extraction system comprises a first effect evaporator (1), a second effect evaporator (2) and a third effect evaporator (3), wherein the first effect evaporator (1), the second effect evaporator (2) and the third effect evaporator (3) are identical evaporation tanks (4), and each evaporation tank (4) comprises a controller, a tank body (41), a feed inlet (42), a steam inlet (43), a heating pipe (44), a condensate outlet (45), a discharge outlet (46) and a steam outlet (49); the method is characterized in that: the discharge outlet (46) of the first effect evaporator (1) is communicated with the feed inlet (42) of the second effect evaporator (2); the steam outlet (49) of the first effect evaporator (1) is communicated with the steam inlet (43) of the second effect evaporator (2); a discharge outlet (46) of the second effect evaporator (2) is communicated with a feed inlet (42) of the third effect evaporator (3); a steam outlet (49) of the third effect evaporator (3) is communicated with a steam inlet (43) of the second effect evaporator (2); the steam inlet (43) of the first effect evaporator (1) and the steam inlet (43) of the third effect evaporator (3) are communicated with a hot steam source; the controller is used for adjusting the operation of the amino acid concentration high-efficiency extraction system.

2. The system for concentrating and efficiently extracting amino acid according to claim 1, wherein: the top of the tank body (41) is fixedly connected with a motor (6), the center inside the tank body (41) is rotatably connected with a rotating shaft (61), the top of the rotating shaft (61) is fixedly connected with an output shaft of the motor (6), the outer side of the rotating shaft (61) is slidably connected with a scraper (64), and the other end of the scraper (64) is slidably sleeved outside the heating pipe (44).

3. The system for concentrating and efficiently extracting amino acid according to claim 2, wherein: a filtering membrane (5) is arranged in the tank body (41), an inner ring (51) is fixedly connected to the circumferential inner side of the filtering membrane (5), and the inner ring (51) is rotatably connected with the rotating shaft (61); an outer ring (52) is fixedly connected to the circumferential outer side of the filtering membrane (5), and the outer ring (52) is fixedly connected with the tank body (41); the rotating shaft (61) is fixedly connected with a helical blade (62) above the filtering membrane (5); the tank body (41) is provided with a liquid outlet (47) at the bottom of the filtering membrane (5).

4. The system for concentrating and efficiently extracting amino acid according to claim 3, wherein: a section of the rotating shaft (61) between the filtering membrane (5) and the helical blade (62) is provided with threads, the thread section of the rotating shaft (61) is in threaded connection with the inner ring (51), two ends of the thread section of the rotating shaft (61) are optical axes, and two ends of the rotating shaft (61) are in rotary connection with the filtering membrane (5); the filtering membrane (5) is an elastic membrane, and the top and the bottom of the inner ring (51) are fixedly connected with travel switches (53); the feed inlet (42) and the discharge outlet (46) are both provided with electromagnetic valves; the travel switch (53) is electrically connected with the electromagnetic valve.

5. The system for concentrating and efficiently extracting amino acid according to claim 4, wherein: the helical blade (62) is distributed in a tapered shape, the circumferential inner side of the helical blade (62) is higher than the circumferential outer side, and a brush (63) is arranged at the bottom of the helical blade (62).

6. The system for concentrating and efficiently extracting amino acid according to claim 4, wherein: the tank body (41) is fixedly connected with an annular groove (48) on the circumferential outer side of the filtering membrane (5), and the bottom of the annular groove (48) is obliquely arranged; the discharge opening (46) is fixedly connected with the lowest point of the annular groove (48).

Technical Field

The invention belongs to the technical field of amino acid extraction, and particularly relates to an efficient amino acid concentration extraction system.

Background

Amino acids are organic compounds containing a basic amino group and an acidic carboxyl group. Amino acid is often concentrated and extracted in an evaporator, a multi-effect evaporation process flow is often adopted for high-efficiency extraction, the multi-effect evaporation process flow can be divided into a parallel-flow three-effect evaporation process flow and a counter-flow three-effect evaporation process flow, in the parallel-flow three-effect evaporation process flow, the flow of raw material liquid and heating steam has the same direction, and the raw material liquid and the steam in the counter-flow three-effect evaporation process flow are opposite in trend.

For example, a chinese patent with application number CN201310713978.8 discloses a high-efficiency energy-saving multi-effect evaporator system, which comprises a multi-effect evaporation group, a condensing tank, and a circulating water pool, wherein the multi-effect evaporation group comprises two or more serially connected evaporators, and the evaporators are provided with a material inlet, a material outlet, a steam inlet, and a steam outlet; the material inlet of the first-effect evaporator is a total material inlet of the evaporation group, the steam inlet of the first-effect evaporator is a total steam inlet of the evaporation group, the material outlet of the final-effect evaporator is a total material outlet of the evaporation group, and the steam outlet of the final-effect evaporator is a total steam outlet of the evaporation group; the discharge port of the evaporator of the previous effect is communicated with the feed port of the evaporator of the next effect, and the steam outlet of the evaporator of the previous effect is communicated with the steam inlet of the evaporator of the next effect; the condensing tank is communicated with the total steam outlet, and the circulating water pool is communicated with the condensing tank.

In the scheme, the energy-saving effect of the multi-effect evaporation process flow is improved to a certain extent, but the parallel-flow three-effect evaporation process flow is adopted, the after-effect temperature of the process flow is lower, the viscosity of the solution is increased gradually, the heat transfer coefficient is reduced, and a larger heat transfer area is needed.

In view of this, the invention provides an efficient extraction system for amino acid concentration, which solves the above technical problems.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides an efficient extraction system for amino acid concentration; through with third effect evaporimeter and hot steam source intercommunication to lead to the second effect heater with the steam that third effect evaporimeter produced, make heat utilization rate higher, and the temperature in the aftereffect improves to some extent in the parallel flow charging system, has overcome the problem that the parallel flow charging system heat transfer coefficient is low and heat transfer area is big, and first effect and second effect adopt the parallel flow to feed in raw material, reduce the use of fluid pump, compare in the reinforced system of adverse current and simplified the structure.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an amino acid concentration efficient extraction system which comprises a first effect evaporator, a second effect evaporator and a third effect evaporator, wherein the first effect evaporator, the second effect evaporator and the third effect evaporator are the same evaporation tank, and the evaporation tank comprises a controller, a tank body, a feeding hole, a steam inlet, a heating pipe, a condensate discharging hole, a discharging hole and a steam discharging hole; the discharge outlet of the first effect evaporator is communicated with the feed inlet of the second effect evaporator; the steam outlet of the first effect evaporator is communicated with the steam inlet of the second effect evaporator; the discharge outlet of the second effect evaporator is communicated with the feed inlet of the third effect evaporator; the steam outlet of the third effect evaporator is communicated with the steam inlet of the second effect evaporator; the steam inlet of the first effect evaporator and the steam inlet of the third effect evaporator are communicated with a hot steam source; the controller is used for adjusting the operation of the amino acid concentration high-efficiency extraction system;

in the prior art, a multi-effect evaporation system is usually adopted for concentrating and efficiently extracting amino acid, the multi-effect evaporation system can be divided into parallel flow feeding and countercurrent flow feeding according to a feeding mode, the after-effect temperature in the parallel flow feeding is low, the viscosity of a solution is gradually increased, the heat transfer coefficient is reduced, a larger heat transfer area is needed, and a fluid pump is used for conveying feed liquid between the effect and the middle effect in the countercurrent flow feeding, so that the device is complicated;

in the invention, the third effect evaporator is communicated with the hot steam source, the raw material liquid is added into the tank body of the first effect evaporator from the feed inlet, the evaporated concentrated liquid is conveyed from the discharge outlet of the first effect evaporator to the feed inlet of the second effect evaporator and enters the tank body of the second effect evaporator from the feed inlet of the second effect evaporator, the evaporated concentrated liquid is pumped into the feed inlet of the third effect evaporator from the discharge outlet of the second effect evaporator and enters the tank body of the third effect evaporator from the feed inlet of the third effect evaporator, the concentrated liquid in the third effect evaporator is the finished liquid and is discharged from the discharge outlet of the third effect evaporator and enters the storage tank for storage, the steam generated by the hot steam source enters the heating pipes of the first effect evaporator and the third effect evaporator from the steam inlet ports of the first effect evaporator and the third effect evaporator respectively and is discharged from the respective condensate outlet after being condensed, the steam generated by the first effect evaporator and the third effect evaporator is discharged from the steam outlet, enters the heating pipe of the second effect evaporator from the steam inlet of the second effect evaporator, and is discharged as condensate water after the second effect concentrated solution is heated.

As an embodiment of the invention, the top of the tank body is fixedly connected with a motor, the center inside the tank body is rotatably connected with a rotating shaft, the top of the rotating shaft is fixedly connected with an output shaft of the motor, the outer side of the rotating shaft is slidably connected with a scraper, and the other end of the scraper is slidably sleeved outside the heating pipe; during operation, through setting up the scraper blade, controller control motor rotates, and the motor drive pivot rotates, and the pivot drives the scraper blade and rotates, and the scraper blade other end removes along the heating pipe simultaneously for the scraper blade reciprocates along the pivot, thereby clears up the adnexed concentrate in the heating pipe outside, reduces the attached influence to heating tube heat conduction efficiency of concentrate, thereby effectively guarantees the heat transfer efficiency of heating pipe, further improves heat utilization rate, and then guarantees the concentrated efficiency of efficient.

Preferably, a filtering membrane is arranged in the tank body, an inner ring is fixedly connected to the circumferential inner side of the filtering membrane, and the inner ring is rotatably connected with the rotating shaft; the outer ring is fixedly connected to the circumferential outer side of the filtering membrane and fixedly connected with the tank body; the rotating shaft is fixedly connected with a helical blade above the filtering membrane; the tank body is provided with a liquid outlet at the bottom of the filtering membrane; when the device works, the filtering membrane is arranged and is a solvent filtering membrane, a solvent in stock solution or concentrated solution in the tank body flows out of the top of the tank body through evaporation on one hand, and is permeated through the filtering membrane and discharged from a liquid outlet on the other hand, and the two concentration modes are carried out simultaneously, so that the concentration efficiency of amino acid is effectively improved; through setting up helical blade, controller control motor rotates, waterproof high temperature resistant protective housing is installed in the motor outside, protect the motor, the motor drive pivot is rotated, the pivot drives helical blade and rotates, thereby helical blade rotates and mixs jar internal stock solution or concentrate, make stock solution or concentrate be heated more evenly, accelerate the evaporation, and helical blade makes stock solution or concentrate mix downwards, thereby make the solvent in stock solution or the concentrate pass through filtration membrane sooner, further accelerate the efficiency that the amino acid concentration was drawed.

Preferably, a section of the rotating shaft between the filtering membrane and the helical blade is provided with threads, the thread section of the rotating shaft is in threaded connection with the inner ring, two ends of the thread section of the rotating shaft are optical axes, and two ends of the rotating shaft are in rotational connection with the filtering membrane; the filtering membrane is an elastic membrane, and the top and the bottom of the inner ring are fixedly connected with travel switches; the feed inlet and the discharge outlet are respectively provided with an electromagnetic valve; the travel switch is electrically connected with the electromagnetic valve; when the device works, the threads are arranged on the rotating shaft, after concentration is completed, the controller controls the motor to stop rotating, concentrated liquid is discharged from the discharge port, along with the reduction of the concentrated liquid, the elasticity of the filtering membrane overcomes the gravity of residual concentrated liquid in the tank and contracts, the inner ring is in contact with the threads on the rotating shaft, the controller drives the motor to rotate reversely at the moment, the inner ring is in threaded connection with the rotating shaft, the filtering membrane rotates along with the rotating shaft, the center of the filtering membrane begins to bulge, so that the concentrated liquid on the filtering membrane is discharged, when the inner ring rises to the optical axis section of the rotating shaft, the travel switch at the top of the inner ring is triggered, the electromagnetic valve at the discharge port is controlled to be closed in a delayed mode, the concentrated liquid in the tank is ensured to be discharged more thoroughly, then the controller controls the motor to rotate forwards, the center of the filtering membrane begins to fall, when the inner ring falls to the optical axis section at the bottom of the rotating shaft, the travel switch at the bottom of the inner ring is triggered, and the electromagnetic valve at the feed port is controlled to be opened, the feeding is started, after the feeding is carried out to a certain degree, the filtering membrane is further descended under the influence of the gravity of the stock solution or the concentrated solution, the travel switch at the bottom of the inner ring is further triggered, the electromagnetic valve of the feeding port is controlled to be closed, the feeding is completed, the automatic control feeding and discharging are carried out, the working efficiency is improved, the participation of personnel is reduced, the labor intensity of the personnel is reduced, and the labor cost is reduced.

Preferably, the helical blades are distributed in a conical shape, the circumferential inner side of the helical blades is higher than the circumferential outer side of the helical blades, and the bottoms of the helical blades are provided with brushes; the during operation, through setting up the brush, when the inner ring rises to the optical axis section at pivot top, filtration membrane is the back taper, filtration membrane and helical blade's brush laminating, controller driving motor rotates, helical blade rotates thereupon, remaining concentrate is cleared up to filtration membrane to the brush when helical blade rotates, filtration membrane's elasticity makes all the other brushes keep laminating, guarantee the cleaning efficiency of brush, concentrate on the brush gathers the back and flows into the bin outlet along filtration membrane and discharges, the solenoid valve of bin outlet department finishes when delaying this moment, close the valve, guarantee filtration membrane's filtration efficiency, and then guarantee the efficiency that the amino acid concentration was drawed.

Preferably, the tank body is fixedly connected with an annular groove at the circumferential outer side of the filtering membrane, and the bottom of the annular groove is obliquely arranged; the discharge port is fixedly connected with the lowest point of the annular groove; during operation, through setting up the ring channel, after the concentration is accomplished, concentrate flows to the ring channel, from the eminence flow direction of ring channel low department of ring channel, discharges from the bin outlet, and filtration membrane's central uplift is after that for remaining concentrate on the filtration membrane flows into in the ring channel, makes concentrate exhaust more thoroughly, improves concentrated rate of recovery.

The invention has the following beneficial effects:

1. according to the amino acid concentration efficient extraction system, the third effect evaporator is communicated with the hot steam source, and steam generated by the third effect evaporator is led to the second effect heater, so that the heat utilization rate is higher, the temperature in the after effect is improved compared with that in a parallel flow charging system, the problems of low heat transfer coefficient and large heat transfer area of the parallel flow charging system are solved, parallel flow charging is adopted for the first effect and the second effect, the use of a fluid pump is reduced, and the structure is simplified compared with that in a counter flow charging system.

2. According to the efficient extraction system for amino acid concentration, the filtering membrane is arranged, so that the raw liquid or the solvent in the concentrated liquid in the tank body flows out of the top of the tank body through evaporation on one hand, and is discharged from the liquid outlet through the filtering membrane on the other hand, and the two concentration modes are carried out simultaneously, so that the concentration efficiency of amino acid is effectively improved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a schematic diagram of an efficient extraction system for amino acid concentration according to the present invention;

FIG. 2 is a schematic view of the internal structure of an evaporation tank;

fig. 3 is an enlarged view of a structure a in fig. 2.

In the figure: 1. a first effect evaporator; 2. a second effect evaporator; 3. a third effect evaporator; 4. an evaporator tank; 41. a tank body; 42. a feed inlet; 43. a steam inlet port; 44. heating a tube; 45. a condensate drain port; 46. a discharge outlet; 47. a liquid discharge port; 48. an annular groove; 49. a steam outlet; 5. a filtration membrane; 51. an inner ring; 52. an outer ring; 53. a travel switch; 6. a motor; 61. a rotating shaft; 62. a helical blade; 63. a brush; 64. a scraper.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 and fig. 3, the amino acid concentration high-efficiency extraction system of the present invention comprises a first effect evaporator 1, a second effect evaporator 2 and a third effect evaporator 3, wherein the first effect evaporator 1, the second effect evaporator 2 and the third effect evaporator 3 are the same evaporation tank 4, and the evaporation tank 4 comprises a controller, a tank body 41, a feed inlet 42, a steam inlet 43, a heating pipe 44, a condensate discharge outlet 45, a discharge outlet 46 and a steam discharge outlet 49; the discharge outlet 46 of the first effect evaporator 1 is communicated with the feed inlet 42 of the second effect evaporator 2; the steam outlet 49 of the first effect evaporator 1 is communicated with the steam inlet 43 of the second effect evaporator 2; the discharge outlet 46 of the second effect evaporator 2 is communicated with the feed inlet 42 of the third effect evaporator 3; the steam outlet 49 of the third effect evaporator 3 is communicated with the steam inlet 43 of the second effect evaporator 2; the steam inlet 43 of the first effect evaporator 1 and the steam inlet 43 of the third effect evaporator 3 are communicated with a hot steam source; the controller is used for adjusting the operation of the amino acid concentration high-efficiency extraction system;

in the prior art, a multi-effect evaporation system is usually adopted for concentrating and efficiently extracting amino acid, the multi-effect evaporation system can be divided into parallel flow feeding and countercurrent flow feeding according to a feeding mode, the after-effect temperature in the parallel flow feeding is low, the viscosity of a solution is gradually increased, the heat transfer coefficient is reduced, a larger heat transfer area is needed, feed liquid must be conveyed by a fluid pump between the effect and the middle effect in the countercurrent flow feeding, the electric energy consumption is increased, and the device is complicated;

in the invention, the third effect evaporator 3 is communicated with the hot steam source, the raw material liquid is added into the tank body 41 of the first effect evaporator 1 from the feed inlet 42, the evaporated concentrated solution is conveyed to the feed inlet 42 of the second effect evaporator 2 from the discharge outlet 46 of the first effect evaporator 1, the concentrated solution enters the tank body 41 of the second effect evaporator 2 from the feed inlet 42 of the second effect evaporator 2, the evaporated concentrated solution is pumped into the feed inlet 42 of the third effect evaporator 3 from the discharge outlet 46 of the second effect evaporator 2, the concentrated solution enters the tank body 41 of the third effect evaporator 3 from the feed inlet 42 of the third effect evaporator 3, the concentrated solution in the third effect evaporator 3 is the finished solution, the finished solution is discharged from the discharge outlet 46 of the third effect evaporator 3 and enters the storage tank for storage, the steam generated by the hot steam source enters the heating pipes 44 of the first effect evaporator 1 and the third effect evaporator 3 from the steam inlet 43 of the first effect evaporator 1 and the third effect evaporator 3 respectively, the steam generated by the first effect evaporator 1 and the third effect evaporator 3 is discharged from a steam outlet 49, enters the heating pipe 44 of the second effect evaporator 2 from a steam inlet 43 of the second effect evaporator 2, and is discharged as condensed water after being heated, the third effect evaporator 3 is communicated with a hot steam source, and the steam generated by the third effect evaporator 3 is communicated with the second effect heater, so that the heat utilization rate is higher, the concentration efficiency and the extraction purity are effectively improved, the temperature in the later effect is improved compared with that in a parallel flow charging system, the problems of low heat transfer coefficient and large heat transfer area of the parallel flow charging system are solved, the parallel flow charging is adopted for the first effect and the second effect, the use of a fluid pump is reduced, and the structure is simplified compared with that in a counter flow charging system.

As an embodiment of the present invention, the top of the tank 41 is fixedly connected with the motor 6, the center inside the tank 41 is rotatably connected with the rotating shaft 61, the top of the rotating shaft 61 is fixedly connected with the output shaft of the motor 6, the outer side of the rotating shaft 61 is slidably connected with the scraper 64, and the other end of the scraper 64 is slidably sleeved outside the heating pipe 44; the during operation, through setting up scraper blade 64, controller control motor 6 rotates, motor 6 drive pivot 61 rotates, pivot 61 drives scraper blade 64 and rotates, the scraper blade 64 other end removes along heating pipe 44 simultaneously, make scraper blade 64 reciprocate along pivot 61, thereby clear up the adnexed concentrate in the heating pipe 44 outside, reduce the attached influence to heating pipe 44 heat conduction efficiency of concentrate, thereby effectively guarantee the heat transfer efficiency of heating pipe 44, further improve heat utilization rate, and then guarantee the concentrated efficiency of efficient.

As an embodiment of the invention, a filtering membrane 5 is arranged inside the tank body 41, an inner ring 51 is fixedly connected to the circumferential inner side of the filtering membrane 5, and the inner ring 51 is rotatably connected with a rotating shaft 61; the outer ring 52 is fixedly connected to the circumferential outer side of the filtering membrane 5, and the outer ring 52 is fixedly connected with the tank body 41; the rotating shaft 61 is fixedly connected with a helical blade 62 above the filtering membrane 5; the tank body 41 is provided with a liquid outlet 47 at the bottom of the filtering membrane 5; when the amino acid concentrating device works, the filtering membrane 5 is arranged, the filtering membrane 5 is a solvent filtering membrane, on one hand, a solvent in a stock solution or a concentrated solution in the tank body 41 flows out from the top of the tank body 41 through evaporation, on the other hand, the solvent is permeated through the filtering membrane 5 and is discharged from the liquid discharge port 47, and the two concentrating modes are carried out simultaneously, so that the amino acid concentrating efficiency is effectively improved; through setting up helical blade 62, controller control motor 6 rotates, waterproof high temperature resistant protective housing is installed in the 6 outsides of motor, protect motor 6, motor 6 drive pivot 61 rotates, pivot 61 drives helical blade 62 and rotates, thereby helical blade 62 rotates and stirs stoste or the concentrate in the jar body 41, make stoste or concentrate be heated more evenly, accelerate the evaporation, and helical blade 62 makes stoste or concentrate stir downwards, thereby make the solvent in stoste or the concentrate more fast through filtration membrane 5, further accelerate the efficiency that the amino acid concentration was drawed.

As an embodiment of the present invention, a section of the rotating shaft 61 between the filtering membrane 5 and the helical blade 62 is provided with a thread, the threaded section of the rotating shaft 61 is in threaded connection with the inner ring 51, two ends of the threaded section of the rotating shaft 61 are optical axes, and two ends of the rotating shaft 61 are in rotational connection with the filtering membrane 5; the filtering membrane 5 is an elastic membrane, and travel switches 53 are fixedly connected to the top and the bottom of the inner ring 51; the feed inlet 42 and the discharge outlet 46 are both provided with electromagnetic valves; the travel switch 53 is electrically connected with the electromagnetic valve; when the device works, the threads are arranged on the rotating shaft 61, after concentration is finished, the controller controls the motor 6 to stop rotating, concentrated solution is discharged from the discharge port 46, along with the reduction of the concentrated solution, the elasticity of the filtering membrane 5 overcomes the gravity of the residual concentrated solution in the tank and contracts, the inner ring 51 is in contact with the threads on the rotating shaft 61, at the moment, the controller drives the motor 6 to rotate reversely, the inner ring 51 is in threaded connection with the rotating shaft 61, the filtering membrane 5 rotates along with the rotating shaft 61, the center of the filtering membrane 5 begins to bulge, so that the concentrated solution on the filtering membrane 5 is discharged, when the inner ring 51 rises to the optical axis section of the rotating shaft 61, the travel switch 53 at the top of the inner ring 51 is triggered, the electromagnetic valve at the discharge port 46 is controlled to be closed in a delayed mode, the concentrated solution in the tank is discharged more completely, then the controller controls the motor 6 to rotate forwardly, the center of the filtering membrane 5 begins to fall, when the inner ring 51 falls to the optical axis section at the bottom of the rotating shaft 61, the travel switch 53 at the bottom of the inner ring 51 is triggered, the solenoid valve of control feed inlet 42 department is opened, begins reinforced, and after feeding in to a certain extent, filtration membrane 5 is further descended by the influence of the gravity of stoste or concentrate, and travel switch 53 of inner ring 51 bottom further triggers, and the solenoid valve of control feed inlet 42 is closed, and reinforced the completion for automatic control is reinforced arranges the material, improves work efficiency, and reduction personnel participate in, reduces personnel's intensity of labour, reduces the human cost.

As an embodiment of the present invention, the helical blades 62 are distributed in a tapered shape, the circumferential inner side of the helical blades 62 is higher than the circumferential outer side, and the bottom of the helical blades 62 is provided with a brush 63; the during operation, through setting up brush 63, when inner ring 51 rises to the optical axis section at pivot 61 top, filtration membrane 5 is the back taper, filtration membrane 5 and helical blade 62's brush 63 laminating, controller driving motor 6 rotates, helical blade 62 rotates thereupon, brush 63 clears up remaining concentrate on filtration membrane 5 when helical blade 62 rotates, filtration membrane 5's elasticity makes all the other brushes 63 keep laminating, guarantee brush 63's cleaning efficiency, concentrate on the brush 63 gathers the back and flows into bin outlet 46 along filtration membrane 5 and discharges, the solenoid valve of bin outlet 46 department is delayed the end this moment, close the valve, guarantee filtration membrane 5's filtration efficiency, and then guarantee the efficiency that the amino acid concentration was drawed.

As an embodiment of the invention, the tank 41 is fixedly connected with an annular groove 48 at the circumferential outer side of the filter membrane 5, and the bottom of the annular groove 48 is obliquely arranged; the discharge opening 46 is fixedly connected to the lowest point of the annular groove 48; during operation, through setting up ring channel 48, after the concentration is accomplished, the concentrate flows to ring channel 48, flows to the low department of ring channel 48 from the eminence of ring channel 48, discharges from bin outlet 46, and the center uplift of filtration membrane 5 makes the remaining concentrate on the filtration membrane 5 flow in to ring channel 48 for the concentrate exhaust is more thorough, improves concentrated rate of recovery.

The specific working process is as follows:

during operation, the third effect evaporator 3 is communicated with a hot steam source, raw material liquid is added into the tank body 41 of the first effect evaporator 1 from the feed inlet 42, evaporated concentrated solution is conveyed to the feed inlet 42 of the second effect evaporator 2 from the discharge outlet 46 of the first effect evaporator 1, the concentrated solution enters the tank body 41 of the second effect evaporator 2 from the feed inlet 42 of the second effect evaporator 2, the evaporated concentrated solution is pumped into the feed inlet 42 of the third effect evaporator 3 from the discharge outlet 46 of the second effect evaporator 2, the concentrated solution enters the tank body 41 of the third effect evaporator 3 from the feed inlet 42 of the third effect evaporator 3, the concentrated solution in the third effect evaporator 3 is finished solution, the finished solution is discharged from the discharge outlet 46 of the third effect evaporator 3 and enters a storage tank for storage, steam generated by the hot steam source enters the heating pipes 44 of the first effect evaporator 1 and the third effect evaporator 3 from the steam inlet 43 of the first effect evaporator 1 and the third effect evaporator 3 respectively, the steam generated by the first effect evaporator 1 and the third effect evaporator 3 is discharged from a steam outlet 49, enters the heating pipe 44 of the second effect evaporator 2 from a steam inlet 43 of the second effect evaporator 2, is heated and then is discharged as condensed water, the third effect evaporator 3 is communicated with a hot steam source, and the steam generated by the third effect evaporator 3 is led to the second effect heater; by arranging the scraper 64, the controller controls the motor 6 to rotate, the motor 6 drives the rotating shaft 61 to rotate, the rotating shaft 61 drives the scraper 64 to rotate, and meanwhile, the other end of the scraper 64 moves along the heating pipe 44, so that the scraper 64 moves up and down along the rotating shaft 61, and concentrated solution attached to the outer side of the heating pipe 44 is cleaned; by arranging the filtering membrane 5, the filtering membrane 5 is a solvent filtering membrane, on one hand, a solvent in a stock solution or a concentrated solution in the tank body 41 flows out from the top of the tank body 41 through evaporation, on the other hand, the solvent permeates through the filtering membrane 5 and is discharged from the liquid discharge port 47, by arranging the spiral blade 62, the controller controls the motor 6 to rotate, a waterproof high-temperature-resistant protective shell is arranged on the outer side of the motor 6 to protect the motor 6, the motor 6 drives the rotating shaft 61 to rotate, the rotating shaft 61 drives the spiral blade 62 to rotate, and the spiral blade 62 rotates to stir the stock solution or the concentrated solution in the tank body 41; through arranging the threads on the rotating shaft 61, after the concentration is finished, the controller controls the motor 6 to stop rotating, the concentrated solution is discharged from the discharge port 46, along with the reduction of the concentrated solution, the elasticity of the filtering membrane 5 overcomes the gravity of the residual concentrated solution in the tank and shrinks, the inner ring 51 is in contact with the threads on the rotating shaft 61, at the moment, the controller drives the motor 6 to rotate reversely, the inner ring 51 is in threaded connection with the rotating shaft 61, the filtering membrane 5 rotates along with the rotating shaft 61, the center of the filtering membrane 5 begins to bulge, so that the concentrated solution on the filtering membrane 5 is discharged, when the inner ring 51 rises to the optical axis section of the rotating shaft 61, the travel switch 53 at the top of the inner ring 51 is triggered, the electromagnetic valve at the discharge port 46 is controlled to be closed in a delayed manner, the concentrated solution in the tank is discharged more completely, then, the controller controls the motor 6 to rotate forwardly, the center of the filtering membrane 5 begins to fall, when the inner ring 51 falls to the optical axis section at the bottom of the rotating shaft 61, the travel switch 53 at the bottom of the inner ring 51 is triggered, the electromagnetic valve at the feed inlet 42 is controlled to be opened, feeding is started, after the feeding is completed to a certain degree, the filtering membrane 5 is further descended under the influence of the gravity of the stock solution or the concentrated solution, the travel switch 53 at the bottom of the inner ring 51 is further triggered, the electromagnetic valve at the feed inlet 42 is controlled to be closed, and the feeding is completed, so that the feeding and discharging are automatically controlled.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.