Corn soaking water evaporation system based on corn starch production

Abstract

The invention provides a corn soaking water evaporation system based on corn starch production, and relates to the technical field of corn starch production equipment. The corn soaking water evaporation system based on corn starch production comprises a bottom frame, a bearing plate is fixed to the upper portion of the bottom frame, a storage tank is installed on one side of the bearing plate, a preheating recycling structure is arranged in the storage tank, a cooling tank is installed on the other side of the bearing plate, and a cooling structure is arranged in the cooling tank. And a multi-effect evaporator is arranged in the middle of the bearing plate. According to the corn soaking water evaporation system based on corn starch production, corn soaking water feed liquid can be conveyed into the multi-effect evaporator through the preheating recovery structure, heating evaporation processing can be conducted on the corn soaking water feed liquid, dirt in the feed liquid can be removed in the process, redundant steam can be cooled through the cooling structure, and the cooling effect is good. The evaporation effect on the feed liquid is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of corn starch production equipment, in particular to a soaking corn water evaporation system based on corn starch production. BACKGROUND

[0002] Soaking corn water generally refers to water produced in the wet processing of corn, such as soaking water produced in the process before the production of corn starch, corn syrup or alcohol fermentation. This water is rich in soluble proteins, amino acids, minerals, vitamins and lactic acid bacteria metabolites, and is rich in nutrients. Through evaporation processing, it can be concentrated into valuable corn starch;

[0003] In the processing of corn starch, multi-effect evaporators are used for processing. In the use of the existing multi-effect evaporator, the soaking corn water liquid flows in the shell side during the flow process in the tank body, and exchanges heat with the steam in the shell side. However, since the soaking corn water contains rich proteins and minerals, it is easy to scale on the inner wall of the tube side. First, it affects the flow speed of the liquid, and second, the scaled tube side becomes thicker, reducing heat transfer, thereby reducing the temperature of the liquid, so that the effect of the corn starch produced by the evaporation of the soaking corn water is not ideal. Moreover, the existing tube side mostly has no self-cleaning ability and can only be manually disassembled and cleaned, which is time-consuming and labor-intensive and affects the yield. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the deficiencies of the prior art, the present application provides a soaking corn water evaporation system based on corn starch production, which solves the problem of inconvenient cleaning of the scaling on the inner wall of the tube side in the multi-effect evaporator during the evaporation processing of the soaking corn water.

[0006] (II) Technical solutions

[0007] In order to achieve the purpose of facilitating the cleaning of the scaling on the inner wall of the tube side in the evaporator during the evaporation processing of the soaking corn water by the multi-effect evaporator, the present application is implemented by the following technical solutions: a soaking corn water evaporation system based on corn starch production, comprising a base frame, a bearing plate is fixed on the upper part of the base frame, a storage tank is installed on one side of the bearing plate, and a preheating recovery structure is arranged in the storage tank, a cooling tank is installed on the other side of the bearing plate, and a cooling structure is arranged in the cooling tank, and a multi-effect evaporator is arranged in the middle of the bearing plate.

[0008] The preheating recovery structure comprises a feeding pipe, which is installed on the top of a storage tank, a discharging pipe is installed on the bottom of the storage tank, a discharging valve is arranged on the discharging pipe, a return pipe is installed on the storage tank, a spiral pipe is installed in the storage tank, the return pipe is communicated with the top of the spiral pipe, a first pump body is installed on the side of the storage tank, and a feeding pipe is installed on the first pump body;

[0009] The cooling structure comprises an exhaust pipe, which is installed on the top of a cooling tank, a drainage pipe is installed on the bottom of the cooling tank, a drainage valve is arranged on the drainage pipe, a first conduit and a second conduit are installed on the bottom of the cooling tank, and a third conduit is installed on the second conduit.

[0010] Preferably, the spiral pipe is fixed on the storage tank in a spiral shape, the top of the spiral pipe is communicated with the return pipe, and the bottom of the spiral pipe is communicated with the first conduit.

[0011] Preferably, the first conduit and the second conduit are respectively located on the two sides of the drainage pipe, and the first conduit is fixedly connected with the storage tank at the end away from the cooling tank.

[0012] Preferably, the multi-effect evaporator comprises a one-effect evaporator, a two-effect evaporator and a three-effect evaporator, which are sequentially mounted on the bearing plate, the bottom of the three-effect evaporator is provided with a finished product pipe, and the upper and lower ends of the one-effect evaporator, the two-effect evaporator and the three-effect evaporator are provided with valve pipes, the one-effect evaporator is provided with a steam introduction pipe, the two-effect evaporator and the three-effect evaporator are provided with a second pump body and a gas-liquid separator, the top end of the third pipe is connected with the gas-liquid separator on one side of the two-effect evaporator, the gas-liquid separator is provided with a liquid material multi-effect pipe, the one-effect evaporator and the two-effect evaporator and the two-effect evaporator and the three-effect evaporator are provided with steam multi-effect pipes, the inside of the one-effect evaporator, the two-effect evaporator and the three-effect evaporator is provided with a heat insulation cabin, the top of the heat insulation cabin is provided with a motor, the output end of the motor is fixedly provided with a driving gear ring, the heat insulation cabin is rotatably connected with a driven gear ring through a rotating shaft, and the driven gear ring is engaged with the driving gear ring, the heat insulation cabin is fixedly provided with an F-shaped support, the inside of the heat insulation cabin is respectively fixedly provided with an upper circulating pipe and a lower circulating pipe, the upper and lower ends of the upper circulating pipe and the lower circulating pipe respectively extend out of the heat insulation cabin, the top end of the upper circulating pipe and the lower circulating pipe is fixedly connected with an upper elbow pipe through a flange, the bottom end of the upper circulating pipe and the lower circulating pipe is fixedly connected with a lower elbow pipe through a flange, the top of the one side lower circulating pipe is provided with a steam outlet pipe, the bottom end of the one side lower circulating pipe is fixedly connected with the finished product pipe, the F-shaped support is provided with a main heating pipe, the upper and lower parts of the upper circulating pipe and the lower circulating pipe are provided with annular grooves, the inside of the annular grooves is rotatably connected with a gear slot rotating ring through a bearing, the two gear slot rotating rings are fixedly provided with a helical blade, the inside of the helical blade is fixedly provided with an inner shaft, the inside of the upper circulating pipe and the lower circulating pipe is provided with an inner heating pipe, the inside of the upper elbow pipe and the lower elbow pipe is provided with an outer heating pipe, the port of the outer heating pipe is fixedly provided with an outer plug, the inside of the F-shaped support is provided with a U-shaped heating pipe, the port of the inner heating pipe is provided with an inner plug slot, the top of the lower elbow pipe and the bottom of the upper circulating pipe and the bottom of the upper elbow pipe and the top of the lower circulating pipe are provided with limiting grooves, and the limiting grooves are provided with filter plates.

[0013] Preferably, the one-effect evaporator and the two-effect evaporator and the two-effect evaporator and the three-effect evaporator are communicated through the steam multi-effect pipes.

[0014] Preferably, the steam outlet pipe is connected with the second pump body, the gas-liquid separator is connected with the second pump body, the liquid material multi-effect pipe is connected with the gas-liquid separator, one end of the liquid material multi-effect pipe away from the gas-liquid separator extends into the bottom of the heat insulation cabin, the main heating pipe is connected with the U-shaped heating pipe, the other end of the U-shaped heating pipe is connected with the inner heating pipe, and the main heating pipe is connected with an external heater.

[0015] Preferably, the upper circulating pipe and the lower circulating pipe are arranged in a staggered manner along the circumference of the heat insulation cabin, and the upper circulating pipe and the lower circulating pipe are connected end to end through the upper elbow pipe and the lower elbow pipe, and the upper circulating pipe, the upper elbow pipe, the lower circulating pipe and the lower elbow pipe form a serpentine pipe.

[0016] Preferably, the upper and lower annular grooves respectively divide the upper circulating pipe and the lower circulating pipe into three sections, and the tooth groove rotary joint is located between the two ends of the F-shaped support, one end of the F-shaped support on one side is fixedly connected with the heat insulation cabin, and the other two ends are fixedly connected with two sections of the upper circulating pipe and the lower circulating pipe.

[0017] Preferably, the helical fins on one side of the upper circulating pipe and the helical fins on one side of the lower circulating pipe are in opposite directions.

[0018] Preferably, the lower elbow pipe and the upper circulating pipe and the upper elbow pipe and the lower circulating pipe clamp and fix the filter plate inside the limiting groove.

[0019] (Three) beneficial effects

[0020] The application provides a soaking corn water evaporation system in corn starch production. It has the following beneficial effects:

[0021] 1. The steam in the spiral pipe can preheat the liquid in the storage tank. After the liquid in the storage tank is preheated, the steam in the spiral pipe returns to the cooling tank through the first conduit, the steam condenses into water and is discharged through the drain pipe, and the non-condensable gas in the cooling tank is directly discharged through the exhaust pipe. Therefore, by preheating the liquid in the storage tank, the efficiency of corn water evaporation processing can be improved.

[0022] 2. During the rotation of the helical fin, the upward flow rate of the liquid in the upper circulating pipe is increased, and the downward flow rate of the liquid in the lower circulating pipe is increased. By increasing the flow rate of the liquid, the liquid can quickly drive the impurities inside to flow, preventing the impurities from adhering to the inner walls of the upper circulating pipe, the upper elbow pipe, the lower circulating pipe and the lower elbow pipe due to slow flow rate, and the impurities adhering to the inner walls of the upper circulating pipe and the lower circulating pipe can be scraped and cleaned by the helical fin.

[0023] 3. The filter plate arranged between the end of the upper elbow pipe and the top end of the lower circulating pipe can filter the liquid entering the inside of the lower circulating pipe, and the filtered impurities remain in the upper elbow pipe. The filter plate arranged between the end of the lower elbow pipe and the bottom end of the upper circulating pipe can filter the liquid entering the inside of the upper circulating pipe, and the filtered impurities remain in the lower elbow pipe. When the impurities need to be cleaned, the outer shell of the upper end and the lower end of the one-effect evaporator, the two-effect evaporator and the three-effect evaporator is opened, the bolts on the flanges are loosened, and then the upper elbow pipe and the lower elbow pipe are disassembled, so that the impurities in the inside of the upper elbow pipe and the lower elbow pipe can be quickly cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 Structure of the present application;

[0025] Figure 2 Structure of the present application;

[0026] Figure 3 Structure of the present application;

[0027] Figure 4 Structure of the present application;

[0028] Figure 5 Structure of the present application Figure 4 Structure of the present application

[0029] Figure 6 Structure of the present application Structure of the present application

[0030] Structure of the present application Figure 7 Structure of the present application Structure of the present application

[0031] Structure of the present application Figure 8 Structure of the present application Figure 7 Structure of the present application Structure of the present application

[0032] Structure of the present application Figure 9 Structure of the present application Figure 7 Structure of the present application

[0033] 1, base frame; 2, bearing plate; 3, storage tank; 31, feeding pipe; 32, discharging pipe; 33, reflux pipe; 34, spiral pipe; 35, first pump body; 36, feeding pipe; 4, cooling tank; 41, exhaust pipe; 42, drain pipe; 43, first conduit; 44, second conduit; 45, third conduit; 5, multi-effect evaporator; 51, one-effect evaporator; 52, two-effect evaporator; 53, three-effect evaporator; 54, finished product pipe; 55, valve pipe; 56, steam introduction pipe; 57, second pump body; 58, gas-liquid separator; 59, liquid multi-effect pipe; 510, steam multi-effect pipe; 511, heat insulation cabin; 512, motor; 513, driving gear ring; 514, driven gear ring; 515, F-shaped support; 516, upper circulating pipe; 517, lower circulating pipe; 518, upper elbow pipe; 519, lower elbow pipe; 520, steam outlet pipe; 521, main heating pipe; 522, annular groove; 523, gear groove rotating ring; 524, spiral fin; 525, inner shaft; 526, inner heating pipe; 527, outer heating pipe; 528, outer plug; 529, U-shaped heating pipe; 530, inner insertion groove; 531, limiting recess; 532, filter plate. DETAILED DESCRIPTION

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Please refer to Figures 1-9 The present application provides a technical scheme: a soaking corn water evaporation system based on corn starch production, comprising a chassis 1, a bearing plate 2 is fixed on the upper part of the chassis 1, a storage tank 3 is installed on one side of the bearing plate 2, and a preheating recovery structure is arranged inside the storage tank 3, a cooling tank 4 is installed on the other side of the bearing plate 2, and a cooling structure is arranged inside the cooling tank 4, and a multi-effect evaporator 5 is arranged in the middle of the bearing plate 2;

[0036] The preheating recovery structure comprises a feeding pipe 31, the feeding pipe 31 is installed at the top of the storage tank 3, a discharging pipe 32 is installed at the bottom of the storage tank 3, and a discharging valve is further arranged on the discharging pipe 32, a reflux pipe 33 is further installed on the storage tank 3, a spiral pipe 34 is installed inside the storage tank 3, and the reflux pipe 33 is communicated with the top of the spiral pipe 34, a first pump body 35 is installed on the side of the storage tank 3, and a feeding pipe 36 is installed on the first pump body 35;

[0037] The cooling structure comprises an exhaust pipe 41, the exhaust pipe 41 is installed at the top of the cooling tank 4, a drain pipe 42 is installed at the bottom of the cooling tank 4, and a drain valve is further arranged on the drain pipe 42, a first conduit 43 and a second conduit 44 are respectively installed at the bottom of the cooling tank 4, and a third conduit 45 is further installed on the second conduit 44, such as Figure 2As shown, steam is introduced into the first evaporator 51 through the steam introduction pipe 56, the steam in the first evaporator 51 enters the second evaporator 52 through the steam multi-effect pipe 510, the steam in the second evaporator 52 enters the third evaporator 53 through the steam multi-effect pipe 510, and the soaked corn water liquid in the storage tank 3 enters the first evaporator 51 through the first pump body 35 and the feed pipe 36 for heating and concentration, the liquid in the first evaporator 51 enters the second evaporator 52 for concentration, the liquid in the second evaporator 52 enters the third evaporator 53 for concentration, and the concentrated corn starch in the third evaporator 53 is discharged through the finished product pipe 54, and the soaking corn water evaporation processing is completed.

[0038] In this embodiment, the spiral pipe 34 is fixed on the storage tank 3 in a spiral shape, the top of the spiral pipe 34 is communicated with the reflux pipe 33, and the bottom is communicated with the first conduit 43.

[0039] Specifically, as shown in Figure 2 and Figure 3 As shown, the liquid in the first evaporator 51 is transported into the second evaporator 52 through the second pump body 57, the gas-liquid separator 58 and the liquid multi-effect pipe 59, the liquid in the second evaporator 52 is transported into the third evaporator 53, in this process, the gas-liquid separator 58 can separate the gas and liquid, at this time, the liquid continues to enter the evaporator, the gas separated from the first evaporator 51 and the second evaporator 52 enters the cooling tank 4 directly through the second conduit 44 and the third conduit 45 for condensation treatment, and the steam in the third evaporator 53 enters the spiral pipe 34 through the reflux pipe 33 after concentrating the liquid, the steam in the spiral pipe 34 can preheat the liquid in the storage tank 3, after preheating the liquid in the storage tank 3, the steam in the spiral pipe 34 returns to the cooling tank 4 through the first conduit 43, the steam is condensed into water and discharged through the drain pipe 42, and the non-condensable gas in the cooling tank 4 is discharged through the exhaust pipe 41, so that the efficiency of corn water evaporation processing can be improved by preheating the liquid in the storage tank 3.

[0040] In this embodiment, the first conduit 43 and the second conduit 44 are located on both sides of the drain pipe 42, and the end of the first conduit 43 away from the cooling tank 4 is fixedly connected with the storage tank 3.

[0041] Specifically, the first conduit 43 and the second conduit 44 can be used to transport steam into the cooling tank 4, so that the cooling tank 4 can cool the excess steam, the condensed water is discharged through the drain pipe 42, and the non-condensable gas in the cooling tank 4 is discharged through the exhaust pipe 41.

[0042] In this embodiment, the multi-effect evaporator 5 includes a first-effect evaporator 51, a second-effect evaporator 52, and a third-effect evaporator 53. The first-effect evaporator 51, the second-effect evaporator 52, and the third-effect evaporator 53 are sequentially mounted on the support plate 2. A finished product feed pipe 54 is installed at the bottom of the third-effect evaporator 53. Valve pipes 55 are installed at both the upper and lower ends of the first-effect evaporator 51, the second-effect evaporator 52, and the third-effect evaporator 53. A steam inlet pipe 56 is installed on the first-effect evaporator 51. A second pump body 57 and a gas-liquid separator 58 are installed on both the second-effect evaporator 52 and the third-effect evaporator 53. The top end of the third conduit 45 is connected to the gas-liquid separator 58 on one side of the second-effect evaporator 52. A liquid multi-effect pipe is installed on the gas-liquid separator 58. 59. A multi-effect steam pipe 510 is installed between the first-effect evaporator 51 and the second-effect evaporator 52, and between the second-effect evaporator 52 and the third-effect evaporator 53. An insulation chamber 511 is installed inside each of the first-effect evaporator 51, the second-effect evaporator 52, and the third-effect evaporator 53. A motor 512 is installed on the top of the insulation chamber 511. A drive gear ring 513 is fixed to the output end of the motor 512. A driven gear ring 514 is rotatably connected to the insulation chamber 511 via a rotating shaft, and the driven gear ring 514 meshes with the drive gear ring 513. An F-type bracket 515 is fixed to the insulation chamber 511. An upper circulation pipe 516 and a lower circulation pipe 517 are fixed inside the insulation chamber 511. The upper circulation pipe 516 and the lower circulation pipe 517... The upper and lower ends extend out of the heat insulation chamber 511, respectively. The top ends of the upper circulation pipe 516 and the lower circulation pipe 517 are fixedly connected to the upper bend pipe 518 by flanges, and the bottom ends of the upper circulation pipe 516 and the lower circulation pipe 517 are fixedly connected to the lower bend pipe 519 by flanges. A steam outlet pipe 520 is provided at the top of one side of the lower circulation pipe 517. The feed pipe 36 is connected to the bottom of one side of the upper circulation pipe 516 by flanges, and the bottom end of one side of the lower circulation pipe 517 is fixedly connected to the finished product pipe 54. The main heating pipe 521 is installed on the F-type bracket 515. Annular grooves 522 are opened at the upper and lower parts of the upper circulation pipe 516 and the lower circulation pipe 517. The inside of the annular groove 522 is rotatably connected to a toothed rotating ring 523 through a bearing seal. A spiral blade 524 is fixed between the upper and lower toothed rotating rings 523. An inner shaft 525 is fixed inside the spiral blade 524. An inner heating tube 526 is installed inside the upper circulation pipe 516 and the lower circulation pipe 517. An outer heating tube 527 is installed inside the upper bend pipe 518 and the lower bend pipe 519. An outer plug 528 is fixed at the port of the outer heating tube 527. A U-shaped heating tube 529 is installed inside the F-type bracket 515. An inner slot 530 is opened at the port of the inner heating tube 526. A limiting groove 531 is opened at the top of the lower bend pipe 519 and the bottom of the upper circulation pipe 516, as well as at the bottom of the upper bend pipe 518 and the top of the lower circulation pipe 517. A filter plate 532 is installed inside the limiting groove 531.

[0043] Specifically, such as Figure 4 , Figure 5and Figure 6 As shown, when the liquid flows through the serpentine pipe consisting of the upper circulation pipe 516, the upper bend pipe 518, the lower circulation pipe 517, and the lower bend pipe 519, the starting motor 512 can drive the drive gear ring 513 to rotate. The meshing of the drive gear ring 513 with the driven gear ring 514 can drive the driven gear ring 514 to rotate. The driven gear ring 514, through meshing with the toothed rotating ring 523, can drive the toothed rotating ring 523 to rotate. In turn, the toothed rotating ring 523 can drive the spiral blade 524 and the inner shaft 525 to rotate. Therefore, when the spiral blade 524 rotates... During the process, firstly, it can increase the upward flow speed of the liquid inside the upper circulation pipe 516 and the downward flow speed of the liquid inside the lower circulation pipe 517. By increasing the flow rate of the liquid, it can drive the flow speed of impurities in the liquid, preventing impurities from adhering to the inner walls of the upper circulation pipe 516, upper bend pipe 518, lower circulation pipe 517, and lower bend pipe 519 due to excessively slow flow rates, thus preventing them from forming dirt. Secondly, during the rotation of the spiral blade 524, the spiral blade 524 can scrape away the impurities adhering to the inner walls of the upper circulation pipe 516 and lower circulation pipe 517 respectively. In addition, after the impurities scraped from the upper circulation pipe 516 flow into the upper curved pipe 518, the impurities inside are filtered into the upper curved pipe 518 as the liquid flows downward. Similarly, after the impurities in the lower circulation pipe 517 flow into the lower curved pipe 519, the impurities inside are also filtered into the lower curved pipe 519 as the liquid flows upward. This multi-stage filtration of the liquid improves the quality of corn water evaporation and concentration. By installing a temperature monitor inside the insulation chamber 511, the stability of the temperature inside the insulation chamber 511 can be monitored. Real-time monitoring reveals that when the temperature is insufficient, the concentration effect is poor. Activating the external heater via the main heating pipe 521 and the U-shaped heating pipe 529 enables the internal heating pipe 526 to compensate for heating the upper circulation pipe 516 and the lower circulation pipe 517, and the external heating pipe 527 to compensate for heating the upper bend pipe 518 and the lower bend pipe 519. This allows the upper circulation pipe 516, upper bend pipe 518, lower circulation pipe 517, and lower bend pipe 519 to heat the liquid inside them, preventing insufficient steam temperature from hindering the concentration of the liquid and thus improving the quality of corn water evaporation processing.

[0044] In this embodiment, the first-effect evaporator 51 and the second-effect evaporator 52, as well as the second-effect evaporator 52 and the third-effect evaporator 53, are connected by a steam multi-effect pipe 510.

[0045] Specifically, the steam inside the first-effect evaporator 51 can be transported to the second-effect evaporator 52 through the steam multi-effect pipe 510, and the steam inside the second-effect evaporator 52 can be transported to the third-effect evaporator 53.

[0046] In this embodiment, the steam outlet pipe 520 is connected to the second pump body 57, the gas-liquid separator 58 is connected to the second pump body 57, the liquid multi-effect pipe 59 is connected to the gas-liquid separator 58, and one end of the liquid multi-effect pipe 59 away from the gas-liquid separator 58 extends into the bottom of the heat insulation chamber 511. The main heating pipe 521 is connected to the U-shaped heating pipe 529, the other end of the U-shaped heating pipe 529 is connected to the inner heating pipe 526, and the main heating pipe 521 is connected to the external heater.

[0047] Specifically, the liquid inside the storage tank 3 can enter the upper circulation pipe 516 through the first pump body 35 and the feed pipe 36, flow upward in the upper circulation pipe 516, and enter the steam outlet pipe 520 after passing through the upper bend pipe 518, the lower circulation pipe 517 and the lower bend pipe 519 in sequence. The liquid inside the steam outlet pipe 520 can flow between the first-effect evaporator 51, the second-effect evaporator 52 and the third-effect evaporator 53 respectively through the second pump body 57, the gas-liquid separator 58 and the liquid-liquid multi-effect pipe 59.

[0048] In this embodiment, the upper circulation pipe 516 and the lower circulation pipe 517 are staggered around the heat insulation chamber 511, and the upper circulation pipe 516 and the lower circulation pipe 517 are connected end to end by the upper bend pipe 518 and the lower bend pipe 519. The upper circulation pipe 516, the upper bend pipe 518, the lower circulation pipe 517 and the lower bend pipe 519 form a serpentine pipe.

[0049] Specifically, the liquid flows upward in the upper circulation pipe 516, then through the upper bend pipe 518 into the lower circulation pipe 517, then downward in the lower circulation pipe 517, and then through the lower bend pipe 519 back into the upper circulation pipe 516, flowing upward again. This cycle creates a serpentine flow of the liquid in the first-effect evaporator 51, the second-effect evaporator 52, and the third-effect evaporator 53. During the flow of the liquid through the upper circulation pipe 516, upper bend pipe 518, lower circulation pipe 517, and lower bend pipe 519, the filter plate 532 located between the end of the upper bend pipe 518 and the top of the lower circulation pipe 517 filters the liquid entering the lower circulation pipe 517, while the filtered impurities remain in the upper bend pipe 518. Similarly, the filter plate 532 located between the end of the lower bend pipe 519 and the bottom of the upper circulation pipe 516 filters the liquid entering the lower circulation pipe 517. The liquid entering the upper circulation pipe 516 is filtered, and the filtered impurities remain in the lower bend pipe 519. When it is necessary to clean the impurities, simply open the outer shells at the upper and lower ends of the first-effect evaporator 51, the second-effect evaporator 52, and the third-effect evaporator 53, loosen the bolts on the flanges, and then disassemble the upper bend pipe 518 and the lower bend pipe 519. This allows for the rapid cleaning of impurities inside the upper bend pipe 518 and the lower bend pipe 519. Furthermore, through the valve pipes 55 located at the upper and lower ends of the first-effect evaporator 51, the second-effect evaporator 52, and the third-effect evaporator 53, the pressure and moisture generated during the heating process of the first-effect evaporator 51, the second-effect evaporator 52, and the third-effect evaporator 53 can be discharged in a timely manner. This ensures that the impurities in the upper bend pipe 518, the lower bend pipe 519, and the filter plate 532 are cleaned in a timely manner, and that the filter plate 532 does not affect the normal flow of the liquid when filtering it.

[0050] In this embodiment, the upper and lower annular grooves 522 divide the upper circulation pipe 516 and the lower circulation pipe 517 into three sections respectively. The toothed swivel ring 523 is located between the two ends of the F-type bracket 515. One end of one side of the F-type bracket 515 is fixedly connected to the heat insulation chamber 511, and the other two ends are fixedly connected to the two sections of the upper circulation pipe 516 and the lower circulation pipe 517 respectively.

[0051] Specifically, the upper and lower F-shaped brackets 515 can fix the middle upper circulation pipe 516 and its top upper circulation pipe 516, and the middle upper circulation pipe 516 and its bottom upper circulation pipe 516, so that the three upper circulation pipes 516 are fixedly connected to each other. Similarly, the upper and lower F-shaped brackets 515 can fix the middle lower circulation pipe 517 and its top lower circulation pipe 517, and the middle lower circulation pipe 517 and its bottom lower circulation pipe 517, so that the three lower circulation pipes 517 are fixedly connected to each other. Furthermore, the connection between the toothed rotating ring 523 and the annular groove 522 ensures a sealed rotation. The connection, and the lower circulation pipe 517 and the toothed swivel ring 523 are integrated rotary joint structures. This rotary joint integrates a slip ring module and a fluid rotary sealing module. It is usually a multi-layer bushing structure. The inner channel is used to transmit liquid medium. The two ends are connected to metal pipes. The middle layer is placed with a slip ring to ensure no leakage of the medium. The outer layer is a precision mechanical sealing system to ensure no leakage of the medium. It is highly integrated, has the best sealing performance, can withstand high pressure, has high reliability, and is highly professional. During the process of the toothed swivel ring 523 driving the spiral blade 524 to rotate, the liquid will also flow normally inside the three-section upper circulation pipe 516 and the three-section lower circulation pipe 517.

[0052] In this embodiment, the spiral blade 524 on one side of the upper circulation pipe 516 and the spiral blade 524 on one side of the lower circulation pipe 517 have opposite spiral directions.

[0053] Specifically, the spiral blades 524 inside the upper circulation pipe 516 enable the liquid to flow rapidly upward in the upper circulation pipe 516, and the spiral blades 524 inside the lower circulation pipe 517 enable the liquid to flow rapidly downward in the lower circulation pipe 517.

[0054] In this embodiment, the lower bend pipe 519 and the upper circulation pipe 516, as well as the upper bend pipe 518 and the lower circulation pipe 517, clamp and fix the filter plate 532 inside the limiting groove 531.

[0055] Specifically, the inner heating pipe 526 is spirally shaped in the axial direction of the upper circulation pipe 516 and the lower circulation pipe 517, and the outer heating pipe 527 is spirally shaped in the circumferential direction of the upper bend pipe 518 and the lower bend pipe 519. After the upper bend pipe 518 is installed and fixed to the top end of the upper circulation pipe 516 and the lower circulation pipe 517 through the flange, and the lower bend pipe 519 is installed and fixed to the bottom end of the upper circulation pipe 516 and the lower circulation pipe 517, the outer plug 528 is inserted into the inner slot 530, and the upper circulation pipe 527 inside the upper bend pipe 518 heats the upper circulation pipe. The inner heating tube 526 on one side of 516 is connected to the top of the inner heating tube 526 on the other side of the lower circulation tube 517. The large contact area between the two heating tubes, along with maintaining appropriate contact pressure, allows for better heat conduction. Furthermore, the U-shaped heating tube 529 bypasses the toothed swivel ring 523, and both ends of the U-shaped heating tube 529 are fixedly connected to the inner heating tubes 526 inside the two upper circulation tubes 516 and the lower circulation tube 517. This ensures that the heating tubes, consisting of the main heating tube 521, the U-shaped heating tube 529, the outer heating tube 527, and the inner heating tube 526, conduct heat to each other. For better results, similarly, both ends of the lower bend 519 can be connected to the bottom ends of the upper circulation pipe 516 and the lower circulation pipe 517, and the external plug 528 is inserted into the inner slot 530. The lower bend 519 connects the bottom ends of the inner heating pipe 526 on one side of the upper circulation pipe 516 and the inner heating pipe 526 on one side of the lower circulation pipe 517 through the external heating pipe 527 inside the lower bend 519. This allows the heating tube composed of the U-shaped heating pipe 529, the external heating pipe 527, and the inner heating pipe 526 to also connect with the upper circulation pipe 516, the upper bend 518, the lower circulation pipe 517, and the lower bend 519. The heating tubes are arranged in a serpentine pattern and connected to each other. They are mainly composed of metal tubes, resistance wires, crystalline magnesium oxide powder, and sealing materials. The working principle is to use current to heat the resistance wires. The heat is transferred to the surface of the metal tubes through the magnesium oxide powder and then to the object being heated. This generates heat in the upper circulation tube 516, upper bend tube 518, lower circulation tube 517, and lower bend tube 519, and heats the liquid inside the upper circulation tube 516, upper bend tube 518, lower circulation tube 517, and lower bend tube 519 to prevent insufficient steam temperature from causing the liquid to concentrate.

[0056] The working principle and usage process of this invention are as follows: The corn soaking solution is poured into the storage tank 3 through the feeding pipe 31 and stored. Fresh steam generated by the boiler is introduced into the steam inlet pipe 56, which then introduces the steam into the first-effect evaporator 51. The steam in the first-effect evaporator 51 enters the second-effect evaporator 52 through the multi-effect steam pipe 510. The steam in the second-effect evaporator 52 then enters the third-effect evaporator 53 through the multi-effect steam pipe 510. Therefore, steam can sequentially enter the first-effect evaporator 51. In the double-effect evaporator 52 and the triple-effect evaporator 53, the first pump body 35 and the feed pipe 36 simultaneously transport the liquid in the storage tank 3 to the upper circulation pipe 516. The upper circulation pipe 516 then transports the liquid to the lower circulation pipe 517 via the upper bend pipe 518. The lower circulation pipe 517 then transports the liquid to the lower bend pipe 519, and the lower bend pipe 519 then transports the liquid back to the upper circulation pipe 516. This cycle ensures that the liquid circulates in a serpentine pattern formed by the upper circulation pipe 516, the upper bend pipe 518, the lower circulation pipe 517, and the lower bend pipe 519. The liquid flows through the pipes. The liquid inside the first-effect evaporator 51 enters the second-effect evaporator 52 via the second pump body 57, gas-liquid separator 58, and liquid-liquid multi-effect pipe 59. The liquid inside the second-effect evaporator 52 then enters the third-effect evaporator 53 via the second pump body 57, gas-liquid separator 58, and liquid-liquid multi-effect pipe 59. The first-effect evaporator 51, second-effect evaporator 52, and third-effect evaporator 53 have identical internal structures. Therefore, the pre-treated corn soaking liquid first enters the first-effect evaporator 51, is heated by fresh steam, and then... The solution begins to boil and evaporate at a certain temperature. The high-temperature secondary steam generated is used as the heat source for the second-effect evaporator 52. The solution concentrated in the first effect enters the second-effect evaporator 52 under the pressure of the second pump body 57. Since the system maintains a vacuum, the boiling point of the second effect is lowered, and the secondary steam from the first effect can be used to heat and boil it. Similarly, the secondary steam generated in the second effect is used to heat the third-effect evaporator 53. The boiling point of the third effect is even lower, and the solution concentration increases with each effect. After the solution is concentrated, the valve on the finished product pipe 54 is opened to discharge the concentrated finished corn starch.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A system for evaporating soaked corn water in corn starch production, comprising a base frame (1), characterized in that: The upper part of the base frame (1) is fixed with a support plate (2), a storage tank (3) is installed on one side of the support plate (2), and a preheating recovery structure is provided inside the storage tank (3). A cooling tank (4) is installed on the other side of the support plate (2), and a cooling structure is provided inside the cooling tank (4). A multi-effect evaporator (5) is provided in the middle of the support plate (2). The preheating recovery structure includes a feeding pipe (31), which is installed on the top of the storage tank (3). A discharge pipe (32) is installed at the bottom of the storage tank (3), and a discharge valve is also provided on the discharge pipe (32). A return pipe (33) is also installed on the storage tank (3). A spiral pipe (34) is installed inside the storage tank (3), and the return pipe (33) is connected to the top of the spiral pipe (34). A first pump body (35) is installed on the side of the storage tank (3), and a feed pipe (36) is installed on the first pump body (35). The cooling structure includes an exhaust pipe (41) installed on the top of the cooling tank (4), a drain pipe (42) installed at the bottom of the cooling tank (4), and a drain valve provided on the drain pipe (42). A first conduit (43) and a second conduit (44) are respectively installed at the bottom of the cooling tank (4), and a third conduit (45) is also installed on the second conduit (44).

2. The corn soaking water evaporation system based on corn starch production according to claim 1, characterized in that: The spiral tube (34) is fixed on the storage tank (3) in a spiral shape. The top of the spiral tube (34) is connected to the return pipe (33), and the bottom is connected to the first conduit (43).

3. The corn soaking water evaporation system based on corn starch production according to claim 1, characterized in that: The first conduit (43) and the second conduit (44) are located on both sides of the drain pipe (42), and the end of the first conduit (43) away from the cooling tank (4) is fixedly connected to the storage tank (3).

4. The corn soaking water evaporation system based on corn starch production according to claim 1, characterized in that: The multi-effect evaporator (5) includes a first-effect evaporator (51), a second-effect evaporator (52), and a third-effect evaporator (53). The first-effect evaporator (51), the second-effect evaporator (52), and the third-effect evaporator (53) are sequentially mounted on a support plate (2). A finished product pipe (54) is installed at the bottom of the third-effect evaporator (53). Valve pipes (55) are installed at both the upper and lower ends of the first-effect evaporator (51), the second-effect evaporator (52), and the third-effect evaporator (53). A steam inlet pipe (56) is installed on the first-effect evaporator (51). A second pump body (57) and a gas-liquid separator (58) are installed on both the second-effect evaporator (52) and the third-effect evaporator (53). The third conduit (45) The top of the device is connected to a gas-liquid separator (58) on one side of the second-effect evaporator (52). A liquid multi-effect pipe (59) is installed on the gas-liquid separator (58). A steam multi-effect pipe (510) is installed between the first-effect evaporator (51) and the second-effect evaporator (52), and between the second-effect evaporator (52) and the third-effect evaporator (53). A heat insulation chamber (511) is installed inside the first-effect evaporator (51), the second-effect evaporator (52), and the third-effect evaporator (53). A motor (512) is installed on the top of the heat insulation chamber (511). A drive gear ring (513) is fixed at the output end of the motor (512). A driven gear ring (514) is rotatably connected to the heat insulation chamber (511) via a rotating shaft. The driven gear ring (514) meshes with the driving gear ring (513). An F-type bracket (515) is fixed on the heat insulation chamber (511). An upper circulation pipe (516) and a lower circulation pipe (517) are fixed inside the heat insulation chamber (511). The upper and lower ends of the upper circulation pipe (516) and the lower circulation pipe (517) extend out of the heat insulation chamber (511). An upper bend pipe (518) is fixedly connected to the top of the upper circulation pipe (516) and the lower circulation pipe (517) through a flange. A lower bend pipe (519) is fixedly connected to the bottom of the upper circulation pipe (516) and the lower circulation pipe (517) through a flange. A steam outlet pipe (520) is provided at the top of one side of the lower circulation pipe (517). The bottom end of (517) is fixedly connected to the finished product pipe (54). The main heating pipe (521) is installed on the F-type bracket (515). The upper circulation pipe (516) and the lower circulation pipe (517) are provided with annular grooves (522) at the top and bottom. The annular groove (522) is rotatably connected to a toothed rotating ring (523) through a bearing seal. A spiral blade (524) is fixed between the upper and lower toothed rotating rings (523). An inner shaft (525) is fixed inside the spiral blade (524). The upper circulation pipe (516) and the lower circulation pipe (517) are both equipped with inner heating pipes (526). The upper bend pipe (518) and the lower bend pipe (519) are both equipped with outer heating pipes (527).The external heating tube (527) has an external plug (528) fixed at its port. A U-shaped heating tube (529) is installed inside the F-shaped bracket (515). An internal slot (530) is provided at the port of the internal heating tube (526). Limiting grooves (531) are provided at the top of the lower bend (519), the bottom of the upper circulation tube (516), the bottom of the upper bend (518), and the top of the lower circulation tube (517). A filter plate (532) is installed inside the limiting groove (531).

5. The corn soaking water evaporation system based on corn starch production according to claim 4, characterized in that: The first-effect evaporator (51) and the second-effect evaporator (52), as well as the second-effect evaporator (52) and the third-effect evaporator (53), are connected by a steam multi-effect pipe (510).

6. The corn soaking water evaporation system based on corn starch production according to claim 4, characterized in that: The steam outlet pipe (520) is connected to the second pump body (57), the gas-liquid separator (58) is connected to the second pump body (57), the liquid multi-effect pipe (59) is connected to the gas-liquid separator (58), and the end of the liquid multi-effect pipe (59) away from the gas-liquid separator (58) extends into the bottom of the heat insulation chamber (511), the main heating pipe (521) is connected to the U-shaped heating pipe (529), the other end of the U-shaped heating pipe (529) is connected to the inner heating pipe (526), ​​and the main heating pipe (521) is connected to the external heater.

7. The corn soaking water evaporation system based on corn starch production according to claim 4, characterized in that: The upper circulation pipe (516) and the lower circulation pipe (517) are staggered along the circumference of the heat insulation chamber (511), and the upper circulation pipe (516) and the lower circulation pipe (517) are connected end to end by the upper bend pipe (518) and the lower bend pipe (519). The upper circulation pipe (516), the upper bend pipe (518), the lower circulation pipe (517) and the lower bend pipe (519) form a serpentine pipe.

8. The corn soaking water evaporation system based on corn starch production according to claim 4, characterized in that: The upper and lower annular grooves (522) divide the upper circulation pipe (516) and the lower circulation pipe (517) into three sections respectively. The toothed swivel ring (523) is located between the two ends of the F-type bracket (515). One end of one side of the F-type bracket (515) is fixedly connected to the heat insulation chamber (511), and the other two ends are fixedly connected to the two sections of the upper circulation pipe (516) and the lower circulation pipe (517) respectively.

9. The corn soaking water evaporation system based on corn starch production according to claim 4, characterized in that: The spiral blades (524) on one side of the upper circulation pipe (516) and the spiral blades (524) on one side of the lower circulation pipe (517) have opposite spiral directions.

10. The corn soaking water evaporation system according to claim 4, characterized in that: The lower bend (519) and the upper circulation pipe (516), as well as the upper bend (518) and the lower circulation pipe (517), clamp and fix the filter plate (532) inside the limiting groove (531).

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