A steam self-circulation system for evaporation of amino acid crystallization tank

Abstract

The invention relates to the field of amino acid evaporation and crystallization, and in particular to a steam self-circulation system for evaporation of an amino acid crystallization tank. The system comprises a bottom plate, a plurality of support columns are arranged at the upper end of the bottom plate, an annular ring is slidably arranged between the support columns, a crystallization tank is rotatably arranged in the annular ring, a conical cover is arranged at the upper end of the support column, a connecting pipe connected with the conical cover is arranged at the upper end of the conical cover, an air pump connected with the connecting pipe is arranged at the upper end of the connecting pipe, a storage tank connected with the connecting pipe is arranged at the upper end of the connecting pipe, a heating plate is arranged on the inner wall of the crystallization tank, steam generated when an amino acid solution is heated can be stored in the storage tank through the air pump, impurities in the amino acid steam can be filtered out through a filtering unit, and the steam is circulated to the crystallization tank, so that the steam of the amino acid solution is reasonably utilized and the crystallization efficiency is improved, and the amino acid crystals contained in the steam can be extracted through the crystallization unit.

Description

Technical Field

[0001] The invention relates to the field of amino acid evaporation crystallization, and in particular to a steam self-circulation system for evaporation in an amino acid crystallization tank. Background Art

[0002] Amino acid evaporation crystallization is a process in which an amino acid solution is heated so that the amino acid solution can evaporate and crystallize. The amino acid crystallization process mainly involves two steps: volatilization and cooling. In this process, the amino acid liquid is heated at high temperature to volatilize the amino acid liquid. After volatilization, amino acid crystals will remain. At the same time, the volatilized steam also contains a small amount of gaseous crystals.

[0003] When existing devices evaporate and crystallize amino acid solutions, they usually use heating materials such as coal to heat the amino acids. During the heating process, a lot of harmful gases will be generated, which may not only pollute the purity of the amino acid crystals, but long-term heating will also pollute the environment. In addition, when existing evaporation devices heat the amino acid solutions, they often heat the amino acid solutions uniformly, which slows down the evaporation rate of the amino acids and reduces the efficiency. In addition, the existing evaporation equipment cannot fully utilize the steam generated by the amino acids during heating, which wastes the crystals contained in the steam, which not only causes waste but also increases costs.

[0004] With the development of science and technology, technicians in related fields have also made a lot of optimizations on amino acid heating crystallization devices to solve some of the above problems. In order to make a more accurate comparison, for example, a Chinese patent with publication number CN204865059U discloses a crystallization device for amino acids;

[0005] It includes a main body, a receiving groove is opened on the main body, a stirring rod is arranged in the receiving groove, one end of the stirring rod is provided with a plurality of rotating rods, the other end of the stirring rod extends out of the receiving groove and is provided with a motor connected to the rotating rod, the motor can drive the stirring rod to rotate circumferentially, and make the rotating rod rotate synchronously with the stirring rod, a heating platform is also provided between the motor and the receiving groove, the upper surface of the heating platform is in contact with the bottom surface of the receiving groove, and a control component connected to the heating platform is also provided on the main body, and the control component includes a display, a temperature controller and a temperature detector.

[0006] However, the above amino acid crystallization device still has some shortcomings in actual use:

[0007] 1. When the above device heats the amino acid solution, the heating table heats the entire amino acid solution through the dissolving tank. However, it is difficult to accurately control the heating temperature when the amino acid solution is heated uniformly, resulting in uneven temperature of the amino acid solution, thereby affecting the quality of crystallization.

[0008] 2. The above device heats the amino acid solution by a unified heating method, which is only applicable to small-scale amino acid heating. Large-scale amino acid crystallization requires heating of a large amount of amino acid solution. Therefore, when the above device is used for large-scale amino acid solution, the efficiency of heating the amino acid solution will be low.

[0009] 3. When the amino acid solution is heated, a large amount of steam will be generated. The heating efficiency of the amino acid solution can be effectively increased by recycling the steam. However, the above device cannot reasonably utilize the steam generated by the amino acid during operation, so the applicability of the above device is low.

[0010] Therefore, based on the above-stated viewpoints, there is still room for improvement in the existing amino acid crystallization apparatus. Summary of the invention

[0011] In order to solve the above problems, the present invention provides a steam self-circulation system for evaporation of an amino acid crystallization tank, comprising a bottom plate, a plurality of support columns are arranged at the upper end of the bottom plate, an annular ring is slidably arranged between the support columns, a crystallization tank is rotatably arranged in the annular ring, a conical cover rotatably connected to the upper end of the crystallization tank is arranged at the upper end of the support column, a connecting pipe connected to the conical cover is arranged at the upper end of the conical cover, an air pump connected to the conical cover is arranged at the upper end of the connecting pipe, a storage tank connected to the conical cover is arranged at the upper end of the connecting pipe, a heating plate is arranged on the inner wall of the crystallization tank, and a spraying unit for spraying an amino acid solution onto the heating plate is also arranged in the crystallization tank.

[0012] The spraying unit comprises a circular through groove opened at the bottom of the crystallization tank, a circular plate is rotatably arranged in the circular through groove, a cylindrical tube is arranged on the inner wall of the circular plate, and the outer diameter of the cylindrical tube increases gradually from low to high.

[0013] Preferably, the spraying unit also includes a plurality of water spray holes opened on the circumference of the outer side of the cylindrical barrel and evenly distributed along its extension section, a water sealing groove wheel is rotatably arranged inside the cylindrical barrel, a rotating shaft with one end connected to the water sealing groove wheel is rotatably arranged at the upper end of the cylindrical barrel, a feed pipe connected to the cylindrical barrel and located outside the crystallization tank is arranged at the lower end of the cylindrical barrel, and a driving groove is arranged at the upper end of the rotating shaft.

[0014] A driving ring is rotatably arranged on the outer side of the rotating shaft, a driving key located in a driving groove is arranged on the inner side of the driving ring, and a connecting plate with one end connected to the heating plate is arranged on the outer side of the driving ring.

[0015] Preferably, a crystallization unit for maintaining the inner wall of the conical cover at a low temperature is provided inside the conical cover, the crystallization unit includes an annular cavity opened inside the conical cover, a partition plate is provided inside the annular cavity, and a water inlet pipe and a water outlet pipe penetrating into the annular cavity are respectively provided at the upper end of the conical cover, and the water inlet pipe and the water outlet pipe are respectively located on the left and right sides of the partition plate.

[0016] Preferably, the storage tank is provided with a pushing unit for inputting the steam in the storage tank into the crystallization tank, the pushing unit comprises a double-axis cylinder arranged on the storage tank, the output shafts at both ends of the double-axis cylinder are provided with linkage plates, the linkage plates are provided with push-pull shafts passing through the corresponding inner wall of the storage tank at one end facing the storage tank, the opposite ends of the push-pull shafts are commonly provided with pushing plates, a sliding groove is provided on the inner wall of the storage tank, a resistance plate located in the sliding groove is provided on the outer side of the pushing plate, a sealing strip slides in the sliding groove, a reset push spring is provided between the sealing strip and the inner wall of the sliding groove, and exhaust grooves are provided at both left and right ends of the sliding groove, which penetrate to the outside of the storage tank and are symmetrically distributed front to back.

[0017] Preferably, a filter assembly for filtering steam is provided at the lower end of the storage tank, and the filter assembly includes a rectangular box arranged at the left and right ends of the storage tank and respectively connected to the front and rear corresponding exhaust grooves, and a front-to-rear symmetrical installation groove is provided at one end of the rectangular box away from the storage tank, a filter frame is slidably installed in the installation groove, a filter net is installed in the filter frame, and a sealing strip is provided at one end of the filter frame located in the installation groove and tightly attached to the inner wall of the installation groove.

[0018] Preferably, a pipeline assembly for discharging filtered gas into a crystallization tank is provided at the lower end of the rectangular box, the pipeline assembly includes a one-way valve arranged at the lower end of the rectangular box and connected thereto, a thermal insulation pipe passing through the outer side of the conical cover, the annular cavity and the inner wall of the conical cover is provided on the conical cover, an air outlet end of the one-way valve is connected to a circulation pipe having one end passing through the corresponding thermal insulation pipe and connected to the crystallization tank, a connecting pipe is connected between the left-right symmetrical rectangular boxes, and an external connecting pipe connected thereto is provided in the middle of the connecting pipe.

[0019] Preferably, a scraping assembly for scraping off the amino acid crystals on the inner wall of the conical cover is also provided inside the conical cover, and the scraping assembly includes a rotating ring rotatably arranged at the upper end of the conical cover, and a plurality of support bars evenly distributed along its axis are installed on the outer side of the rotating ring, and a scraper close to the inner wall of the conical cover is provided on the upper end of the support bar, and an annular plate is provided on the inner wall of the upper end of the crystallization tank, and a wave groove evenly distributed along its axis is formed on the annular plate, and an L-shaped plate is also provided on the support bar, and the end of the L-shaped plate away from the support bar is located between the heating plate and the annular plate.

[0020] Preferably, a driving assembly for driving the crystallization tank to rotate and move up and down is provided on the support column, the driving assembly includes a driving gear ring arranged on the outside of the crystallization tank, a driving motor is arranged on the annular ring through a motor seat, a driving gear meshing with the driving gear ring is arranged on the outside of the main shaft of the driving motor, and a driving cylinder is also arranged above the bottom plate, and the telescopic end of the driving cylinder is connected to the circular plate.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The present invention can spray the amino acid solution onto the heating plate by spraying the amino acid solution through the spraying unit, and the driving component can drive the heating plate to rotate through the crystallization tank, so that the amino acid solution can be evenly sprayed onto the heating plate. The heating plate can heat the amino acid solution more quickly, which is suitable for large-scale amino acid solution heating scenarios.

[0023] 2. The present invention can store the steam generated when the amino acid solution is heated in a storage tank through a vacuum pump, and then filter out impurities in the amino acid steam through a filtering unit and circulate it to the crystallization tank again, which not only reasonably utilizes the steam of the amino acid solution and improves the crystallization efficiency, but also can extract the amino acid crystals contained in the steam through the crystallization unit, thereby further improving the crystallization efficiency of the amino acid solution without wasting raw materials.

[0024] 3. After the crystallization is completed, the driving component of the present invention can drive the crystallization tank to move up and down to separate the crystallization tank and the conical cover, and then trigger the scraping component to scrape off the amino acid solution crystals on the inner wall of the conical cover, so that the staff can clean it up easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 It is a schematic diagram of the structure of the spray unit and the drive assembly of the present invention.

[0028] Figure 3 It is a schematic structural diagram of the crystallization unit of the present invention.

[0029] Figure 4 It is a structural schematic diagram of the pushing unit of the present invention.

[0030] Figure 5 It is a right side cross-sectional view of the pushing unit of the present invention.

[0031] Figure 6 It is a schematic diagram of the structure of the filter assembly of the present invention.

[0032] Figure 7 It is a structural schematic diagram of the pipeline assembly of the present invention.

[0033] Figure 8 It is a right side cross-sectional view of the pipeline assembly of the present invention.

[0034] Fig. 9 It is a schematic structural diagram of the scraping assembly of the present invention.

[0035] Fig.10It is a structural schematic diagram of the sealing component of the present invention.

[0036] In the figure, 1, bottom plate; 10, support column; 11, annular ring; 12, crystallization tank; 13, conical cover; 14, connecting pipe; 15, vacuum pump; 16, storage tank; 17, heating plate; 2, spray unit; 20, circular groove; 21, circular plate; 22, cylindrical tube; 23, water spray hole; 24, water sealing groove wheel; 25, rotating shaft; 26, feed pipe; 27, driving groove; 28, driving ring; 29, driving key; 210, connecting plate; 3, driving assembly; 30, driving gear ring; 31, driving motor; 32, driving gear; 33, driving cylinder; 4, crystallization unit; 40, annular cavity; 41, partition plate; 42, water inlet pipe; 43, water outlet pipe; 5 , pushing unit; 50, double-axis cylinder; 51, linkage plate; 52, push-pull shaft; 53, pushing plate; 54, sliding groove; 55, resistance plate; 56, blocking strip plate; 57, reset push spring; 58, exhaust groove; 6, filter assembly; 60, rectangular box; 61, installation groove; 62, filter frame; 63, filter net; 7, pipeline assembly; 70, one-way valve; 71, insulation pipe; 72, circulation pipe; 73, connecting pipe; 74, external connecting pipe; 8, scraping assembly; 80, rotating ring; 81, support bar; 82, scraper; 83, annular plate; 84, wave groove; 85, L-shaped plate; 9, sealing assembly; 90, annular groove; 91, rotating circle; 92, rubber ring. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1 To Attachment Fig.10 While embodiments of the invention have been described in detail, the invention can be implemented in many different ways as defined and covered by the claims.

[0038] The embodiment of the present application discloses a steam self-circulation system for evaporation in an amino acid crystallization tank, which explains that the steam self-circulation system for evaporation in an amino acid crystallization tank is mainly used in heating an amino acid solution to evaporate and crystallize the amino acid. In terms of technical effect, the amino acid solution can be heated by electric heating to evaporate the amino acid solution, and the steam generated by the amino acid heating can be crystallized by low-temperature crystallization; in particular, the steam self-circulation system for evaporation in an amino acid crystallization tank can also self-circulate the steam of the amino acid, so that the steam can improve the crystallization efficiency by circulating, and the amino acid solution can be utilized to the greatest extent by circulating the steam, thereby further saving costs.

[0039] Example 1: Reference Figure 1 and Figure 2As shown, it includes a base plate 1, a support column 10, an annular ring 11, a crystallizer 12, a conical cover 13, a connecting pipe 14, an air pump 15, a storage tank 16, a heating plate 17 and a spraying unit 2, wherein the upper end of the base plate 1 is provided with several support columns 10, an annular ring 11 is slidably provided between the support columns 10, a crystallizer 12 is rotatably provided in the annular ring 11, the annular ring 11 can slide in the up-down direction between the support columns 10, and the crystallizer 12 can rotate on the annular ring 11, and the crystallizer 12 can also slide in the up-down direction between the support columns 10 by the annular ring 11; the upper end of the support column 10 is provided with a conical cover 13 rotatably connected to the upper end of the crystallizer 12, the upper end of the conical cover 13 is provided with a connecting pipe 14 connected thereto, the upper end of the connecting pipe 14 is provided with an air pump 15 connected thereto, the upper end of the connecting pipe 14 is provided with a storage tank 16 connected thereto, and the inner wall of the crystallizer 12 is provided with a heating plate 17.

[0040] The heating plate 17 can heat the amino acid solution. After being heated, the amino acid solution will generate steam, which will float toward the conical cover 13. Then, the vacuum pump 15 can extract the steam between the crystallization tank 12 and the conical cover 13 into the storage tank 16 through the connecting pipe 14. The storage tank 16 will store the steam for a short time. The crystallization tank 12 is also provided with a spraying unit 2 for spraying the amino acid solution onto the heating plate 17. The spraying unit 2 can spray the amino acid solution onto the heating plate 17, so that the heating plate 17 can heat the amino acid solution.

[0041] It should be noted that the "vacuum pump 15" proposed in the above implementation process is a prior art. Its function in this embodiment is only to extract the steam in the crystallization tank 12 and the conical cover 13 into the storage tank 16 through the connecting pipe 14, so it will not be described in detail in this embodiment.

[0042] Reference Figure 2 As shown, a spraying unit 2 is used to spray the amino acid solution onto the heating plate 17; specifically, the spraying unit 2 includes a circular through groove 20, a circular plate 21, a cylindrical barrel 22, a water spray hole 23, a water sealing groove wheel 24, a rotating shaft 25, a feed pipe 26, a driving groove 27, a driving ring 28, a driving key 29 and a connecting plate 210, the circular through groove 20 is opened at the bottom of the crystallization tank 12, a circular plate 21 is rotatably arranged in the circular through groove 20, a cylindrical barrel 22 is arranged on the inner wall of the circular plate 21, and the outer diameter of the cylindrical barrel 22 gradually increases from low to high, a plurality of water spray holes 23 uniformly distributed along its extension section are opened in the circumferential direction of the outer side of the cylindrical barrel 22, a water sealing groove wheel 24 is rotatably arranged inside the cylindrical barrel 22, and a rotating shaft 25 having one end connected to the water sealing groove wheel 24 is rotatably arranged at the upper end of the cylindrical barrel 22, and the rotating shaft 25 can drive the water sealing groove wheel 24 to rotate in the cylindrical barrel 22.

[0043] A feed pipe 26 connected to the cylindrical barrel 22 and located outside the crystallization tank 12 is provided at the lower end of the cylindrical barrel 22. The feed pipe 26 can be connected to an external injection device, and the amino acid solution is injected into the cylindrical barrel 22 from the feed pipe 26 through the external injection device. The amino acid solution will be divided into several groups by the water sealing groove wheel 24, and the outer side surface of the water sealing groove wheel 24 blocks the water spray hole 23 in the initial state. Therefore, only after the amino acid solution is fully injected into the cylindrical barrel 22, the rotating shaft 25 can drive the water sealing groove wheel 24 to rotate, and the water spray hole 23 is no longer blocked, so that the amino acid solution can be sprayed out from the water spray hole 23 under the pressure of the external injection device. The outer diameter of the cylindrical barrel 22 is from small to large in order to balance the pressure, so that the amino acid solution sprayed from the water spray hole 23 can be sprayed onto the heating plate 17.

[0044] A driving groove 27 is provided at the upper end of the rotating shaft 25, and a driving ring 28 is rotatably arranged on the outer side of the rotating shaft 25. A driving key 29 located in the driving groove 27 is arranged on the inner side of the driving ring 28, and a connecting plate 210 with one end connected to the heating plate 17 is arranged on the outer side of the driving ring 28. When the circular plate 21 is limited by external force, the crystallizer 12 will drive the heating plate 17 to rotate around the circular plate 21. The heating plate 17 can drive the rotating shaft 25 to rotate through the connecting plate 210, the driving ring 28, the driving key 29 and the driving groove 27, so that the amino acid solution can be sprayed onto the heating plate 17 indirectly. In addition, the heating plate 17 will be driven by the crystallizer 12 to rotate, so that the amino acid solution can be evenly sprayed onto the heating plate 17, so that the heating plate 17 can heat the amino acid solution more efficiently.

[0045] The specific function of the water sealing groove wheel 24 is to prevent insufficient water pressure in the cylindrical barrel 22. Therefore, after a wave of amino acid solution is sprayed, the water spray hole 23 will continue to be blocked until the amino acid solution fills the cylindrical barrel 22 again under the injection of the external injection equipment.

[0046] It should be noted that the "external injection equipment" in the above embodiment is a prior art, and its function in this embodiment is only to inject the amino acid solution from the feed pipe 26 into the cylindrical barrel 22, so it will not be described in detail in this embodiment.

[0047] Continue to refer to Figure 2As shown, a driving component 3 for driving the crystallization tank 12 to rotate and move up and down is arranged on the support column 10; specifically, the driving component 3 includes a driving ring gear 30, a driving motor 31, a driving gear 32 and a driving cylinder 33, the driving ring gear 30 is arranged on the outside of the crystallization tank 12, the driving motor 31 is arranged on the annular ring 11 through the motor seat, and a driving gear 32 meshing with the driving ring gear 30 is arranged on the outside of the main shaft of the driving motor 31, and the driving motor 31 can drive the driving ring gear 30 to rotate through the driving gear 32, so that the driving ring gear 30 can drive the crystallization tank 12 to rotate under the limit of the rotating circle 91.

[0048] A driving cylinder 33 is also provided above the base plate 1, and the telescopic end of the driving cylinder 33 is connected to the circular plate 21. The driving cylinder 33 can drive the crystallization tank 12 to move up and down on the support column 10 under the limitation of the annular ring 11 through the circular plate 21, and the driving cylinder 33 can limit the circular plate 21.

[0049] Reference Figure 3 As shown, a crystallization unit 4 for maintaining the inner wall of the conical cover 13 at a low temperature is arranged inside the conical cover 13; specifically, the crystallization unit 4 includes an annular cavity 40, a partition plate 41, an inlet pipe 42 and an outlet pipe 43, the annular cavity 40 is opened in the conical cover 13, a partition plate 41 is arranged in the annular cavity 40, and an inlet pipe 42 and an outlet pipe 43 penetrating into the annular cavity 40 are arranged at the upper end of the conical cover 13, and the inlet pipe 42 and the outlet pipe 43 are respectively located on the left and right sides of the partition plate 41, and the partition plate 41 is used to separate the inlet pipe 42 and the outlet pipe 43.

[0050] The water inlet pipe 42 and the water outlet pipe 43 can be connected to an external water injection device. The external water injection device is used to inject cooling water into the annular cavity 40 through the water inlet pipe 42. The cooling water can flow in the annular cavity 40 to cool the inner wall of the conical cover 13, so that when the amino acid vapor contacts the inner wall of the conical cover 13, it crystallizes under the action of the temperature of the inner wall of the conical cover 13. When the cooling water in the annular cavity 40 is full, it will flow out from the water outlet pipe 43 and circulate in sequence. The cooling water is continuously injected into the annular cavity 40 through the external water injection device to continuously cool the inner wall of the conical cover 13.

[0051] When the amino acid solution is heated, the amino acid crystals in the solution usually exist in the form of gas or dissolved in water vapor. Therefore, the crystallization unit 4 allows the amino acid vapor to contact the inner wall of the conical cover 13 with a lower temperature, so that the gaseous crystals in the amino acid vapor can be converted into solid state and the crystals can be extracted.

[0052] It should be noted that the "external water injection equipment" in the above implementation is a prior art, and its function in this implementation is only to allow cooling water to flow into the annular cavity 40 through the water inlet pipe 42, so it will not be described in detail in this embodiment.

[0053] Reference Figure 4 and Figure 5 As shown, the storage tank 16 is provided with a pushing unit 5 for inputting the steam in the storage tank 16 into the crystallization tank 12; specifically, the pushing unit 5 includes a double-axis cylinder 50, a linkage plate 51, a push-pull shaft 52, a pushing plate 53, a sliding groove 54, a contact plate 55, a blocking strip 56, a reset push spring 57 and an exhaust groove 58. The double-axis cylinder 50 is arranged at the upper end of the storage tank 16, and the output shafts at both ends of the double-axis cylinder 50 are provided with linkage plates 51. The end of the linkage plate 51 facing the storage tank 16 is provided with a push-pull shaft 52 passing through the inner wall of the corresponding storage tank 16, and the opposite end of the push-pull shaft 52 is commonly provided with a pushing plate 53. The double-axis cylinder 50 can drive the push-pull shaft 52 to move in the left and right directions through the linkage plate 51. The push-pull shaft 52 can drive the pushing plate 53 to move in the left and right directions in the storage tank 16 during the movement. The pushing plate 53 can push the steam in the storage tank 16 to float during the movement.

[0054] The storage tank 16 is provided with a sliding groove 54 on the inner wall, and a resistance plate 55 located in the sliding groove 54 is provided on the outer side of the pushing plate 53. A blocking strip 56 slides in the sliding groove 54, and a return spring 57 is provided between the blocking strip 56 and the inner wall of the sliding groove 54. Exhaust grooves 58 that penetrate to the outer side of the storage tank 16 and are symmetrically distributed front and back are provided at both ends of the sliding groove 54. The blocking strip 56 can move up and down in the sliding groove 54, and the return spring 57 can provide an upward thrust to the blocking strip 56, so that the front and rear sides of the blocking strip 56 can block the exhaust groove 58. When the pushing plate 53 moves, it can drive the resistance plate 55 to move synchronously in the sliding groove 54. The resistance plate 55 will resist the blocking strip 56 during the movement, so that the blocking strip 56 slides downward in the sliding groove 54 and no longer blocks the exhaust groove 58, so that the steam in the storage tank 16 can be discharged from the exhaust groove 58 to the outside of the storage tank 16.

[0055] In the initial state, the push plate 53 is located on one side of the storage tank 16 and the air inlet hole of the vacuum pump 15, that is, when the vacuum pump 15 is pumping air, the steam will only be located on one side of the storage tank 16 due to the restriction of the push plate 53. Then, when the push plate 53 moves to push the steam out of the storage tank 16, after moving through the air inlet hole of the vacuum pump 15, the steam pumped up by the vacuum pump 15 will be located on the other side of the storage tank 16. Then, the push plate 53 moves in the opposite direction to discharge the steam on the other side of the storage tank 16 from the exhaust groove 58 on the other side.

[0056] Example 2: Reference Figure 6 As shown, on the basis of Example 1, impurities may be generated in the steam generated by the amino acid solution, therefore, a filter assembly 6 for filtering the steam is provided at the lower end of the storage tank 16; specifically, the filter assembly 6 includes a rectangular box 60, a mounting groove 61, a filter frame 62 and a filter screen 63, and the front and rear corresponding rectangular boxes 60 are arranged at the left and right ends of the storage tank 16 and are respectively connected to the corresponding exhaust grooves 58, and the steam discharged from the exhaust grooves 58 can enter the rectangular box 60; a front-to-back symmetrical mounting groove 61 is provided at one end of the rectangular box 60 away from the storage tank 16, a filter frame 62 is slidably installed in the mounting groove 61, a filter screen 63 is installed in the filter frame 62, and a sealing strip (not shown in the figure) is provided at one end of the filter frame 62 located at the mounting groove 61 and is tightly attached to the inner wall of the mounting groove 61.

[0057] The installation frame can drive the filter screen 63 to slide in the installation groove 61, and steam can pass through the filter screen 63. The filter screen 63 can filter out impurities in the steam. The filter screen 63 can be driven by the filter frame 62 to be taken out of the installation groove 61 for subsequent replacement. The sealing rubber strip can seal the gap between the installation groove 61 and the filter frame 62 to prevent steam leakage.

[0058] Reference Figure 7 and Figure 8 As shown, in order to send the filtered steam between the crystallizer 12 and the conical cover 13, a pipeline assembly 7 for discharging the filtered gas into the crystallizer 12 is provided at the lower end of the rectangular box 60; specifically, the pipeline assembly 7 comprises a one-way valve 70, a heat preservation pipe 71, a circulation pipe 72, a connecting pipe 73 and an external connecting pipe 74, the one-way valve 70 is arranged at the lower end of the rectangular box 60 and is connected thereto, the conical cover 13 is provided with a heat preservation pipe 71 passing through the outside of the conical cover 13, the annular cavity 40 and the inner wall of the conical cover 13, the one-way valve 70 gas outlet end is connected to a circulation pipe 72 that passes through the corresponding heat preservation pipe 71 and is connected to the crystallizer 12, after the steam in the rectangular box 60 is filtered by the filter screen 63, it can be discharged from the one-way valve 70 and the circulation pipe 72 between the crystallizer 12 and the conical cover 13, so that the steam can continue to contact the inner wall of the conical cover 13.

[0059] The one-way valve 70 is used to prevent the reverse flow between the crystallization tank 12 and the conical cover 13 into the rectangular box 60, and the insulation pipe 71 is used to insulate the circulation pipe 72 to prevent the coolant from cooling the steam in the circulation pipe 72, causing the steam in the circulation pipe 72 to crystallize prematurely.

[0060] A connecting pipe 73 is connected between the rectangular boxes 60 that are symmetrical on the left and right. An external connecting pipe 74 connected to the connecting pipe 73 is arranged in the middle of the connecting pipe 73. The external connecting pipe 74 is used to connect to a constant pressure device. When steam circulates in the device, as the frequency of steam utilization increases, steam will inevitably be lost, which will reduce the pressure in the pipeline. Therefore, when the steam pressure in the device is less than the set value, the constant pressure device will convey steam to the rectangular box 60 through the external connecting pipe 74 and the connecting pipe 73. The steam conveying the feed will also pass through the filter 63, and the steam will take away the heat on the filtered impurities when passing through the filter 63, further improving the utilization rate of the heat of the filtered impurities and ensuring that the heat in the device is within a reasonable range.

[0061] It should be noted that the "constant pressure device" proposed in the above implementation process is a prior art, and its purpose is to transport steam toward the rectangular box 60 through the external connecting pipe 74 and the connecting pipe 73. Therefore, it will not be described in detail in this embodiment.

[0062] Example 3: Reference Fig. 9 As shown, on the basis of Example 1 and Example 2, in order to scrape off the crystals on the inner wall of the conical cover 13 after the amino acid solution crystallizes, a scraping assembly 8 is provided inside the conical cover 13; specifically, the scraping assembly 8 includes a rotating ring 80, a support bar 81, a scraper 82, an annular plate 83, a wave groove 84 and an L-shaped plate 85, the rotating ring 80 is rotatably arranged at the upper end of the conical cover 13, and a plurality of support bars 81 evenly distributed along its axis are installed on the outer side of the rotating ring 80, and a scraper 82 is provided on the upper end of the support bar 81, which is close to the inner wall of the conical cover 13, and the rotating ring 80 can limit the support bar 81 so that the support bar 81 can rotate under the limit of the rotating ring 80, and the support bar 81 can drive the scraper 82 to rotate synchronously when rotating, and the scraper 82 can scrape off the crystals attached to the inner wall of the conical cover 13 when rotating, and the scraped crystals will fall into the crystallization tank 12.

[0063] An annular plate 83 is provided on the inner wall of the upper end of the crystallizer 12, and an undulating groove 84 evenly distributed along its axis is provided on the annular plate 83. An L-shaped plate 85 is also provided on the support bar 81, and one end of the L-shaped plate 85 away from the support bar 81 is located between the heating plate 17 and the annular plate 83. When the crystallizer 12 rotates, the annular plate 83 can be driven to rotate synchronously. In the initial state, when the crystallizer 12 is close to the conical cover 13, the support bar 81 will not rotate when the crystallizer 12 rotates. After crystallization is completed, the driving cylinder 33 indirectly drives the crystallizer 12 to move downward, and the L-shaped plate 85 will correspond to the undulating groove 84. At this time, the crystallizer 12 is indirectly driven to rotate by the driving motor 31, and the annular plate 83 will contact with the L-shaped plate 85, and drive the support bar 81 to rotate through the L-shaped plate 85.

[0064] The scraped crystals fall into the crystallization tank 12, and then the crystals that fall from the crystallization tank 12 and the crystals remaining after the amino acid solution on the heating plate 17 is manually collected. The scraping component 8 is used to scrape the amino acid crystals on the inner wall of the conical cover 13 onto the heating plate 17, and the amino acid crystals produced by heating the amino acid solution on the heating plate 17 fall together, which is convenient for the staff to clean and collect later.

[0065] Reference Fig.10 As shown, the corresponding ends of the crystallization tank 12 and the conical cover 13 are provided with a sealing component 9 for sealing the connection; specifically, the sealing component 9 includes an annular groove 90, a rotating ring 91 and a rubber ring 92, the annular groove 90 is provided at the lower end of the conical cover 13, and the inner walls on both sides of the annular groove 90 are rotatably provided with rotating rings 91, and the upper end of the crystallization tank 12 is provided with a rubber ring 92 located in the annular groove 90, and the outer wall and the inner wall of the rubber ring 92 are both tightly attached to the rotating ring 91, the rubber ring 92 can rotate synchronously with the crystallization tank 12, and after the rubber ring 92 contacts with the rotating ring 91, it will drive the rotating ring 91 to rotate synchronously in the annular groove 90, thereby reducing friction and ensuring the sealing between the crystallization tank 12 and the conical cover 13.

[0066] During operation: In the first step, the amino acid solution is injected into the spray unit 2 through an external injection device, and then the crystallization tank 12 is driven to rotate by the driving component 3, so that the spray unit 2 can spray the amino acid solution onto the heating plate 17, and then the heating plate 17 heats the amino acid solution, and the amino acid solution will generate steam during the heating process.

[0067] Step 2: The solution produced by the amino acid solution will contact the inner wall of the conical cover 13, and the steam in contact with the inner wall of the conical cover 13 will produce crystals under the cooling of the crystallization unit 4, and the vacuum pump 15 can pump excess steam from between the crystallization tank 12 and the conical cover 13 into the storage tank 16.

[0068] Step 3: The pushing unit 5 will push the gas out of the storage tank 16 by reciprocating, and the filter assembly 6 will filter out impurities in the steam, and then the filtered steam will be re-injected into the space between the crystallization tank 12 and the conical cover 13 through the pipe assembly 7, so that the steam can circulate back and forth in this device.

[0069] Step 4: After the crystallization is completed, the crystallization tank 12 is driven to descend by the driving component 3, and then the crystallization tank 12 is driven to rotate by the driving component 3, so that the scraping component 8 can scrape off the crystals on the inner wall of the conical cover 13.

[0070] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0071] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A steam self-circulation system for evaporation of an amino acid crystallization tank, comprising a bottom plate (1), a plurality of support columns (10) being arranged at the upper end of the bottom plate (1), characterized in that: An annular ring (11) is slidably disposed between the support columns (10), a crystallization tank (12) is rotatably disposed in the annular ring (11), a conical cover (13) rotatably connected to the upper end of the crystallization tank (12) is disposed at the upper end of the support column (10), a connecting pipe (14) in communication with the conical cover (13) is disposed at the upper end thereof, and an air pump (15) in communication with the connecting pipe (14) is disposed at the upper end thereof; A storage tank (16) is provided at the upper end of the connecting pipe (14) and is in communication with the connecting pipe. A heating plate (17) is provided on the inner wall of the crystallizing tank (12). A spraying unit (2) is also provided in the crystallizing tank (12) for spraying the amino acid solution onto the heating plate (17). The spraying unit (2) comprises a circular through groove (20) provided at the bottom of the crystallization tank (12), a circular plate (21) being rotatably arranged in the circular through groove (20), a cylindrical tube (22) being arranged on the inner wall of the circular plate (21), and the outer diameter of the cylindrical tube (22) gradually increases from low to high; The spraying unit (2) further comprises a plurality of water spray holes (23) which are arranged on the outer circumference of the cylindrical barrel (22) and are evenly distributed along the extension section thereof; a water sealing groove wheel (24) is rotatably arranged inside the cylindrical barrel (22); a rotating shaft (25) having one end connected to the water sealing groove wheel (24) is rotatably arranged at the upper end of the cylindrical barrel (22); a feed pipe (26) which is connected to the cylindrical barrel (22) and is located outside the crystallization tank (12) is arranged at the lower end of the cylindrical barrel (22); and a driving groove (27) is arranged at the upper end of the rotating shaft (25); A driving ring (28) is rotatably arranged outside the rotating shaft (25), a driving key (29) located in the driving groove (27) is arranged inside the driving ring (28), and a connecting plate (210) having one end connected to the heating plate (17) is arranged outside the driving ring (28); The conical cover (13) is provided with a crystallization unit (4) for maintaining the inner wall of the conical cover (13) at a low temperature. The crystallization unit (4) comprises an annular cavity (40) provided in the conical cover (13), a partition plate (41) provided in the annular cavity (40), and a water inlet pipe (42) and a water outlet pipe (43) penetrating into the annular cavity (40) are provided at the upper end of the conical cover (13), and the water inlet pipe (42) and the water outlet pipe (43) are respectively located on the left and right sides of the partition plate (41); The storage tank (16) is provided with a pushing unit (5) for inputting the steam in the storage tank (16) into the crystallization tank (12), the pushing unit (5) comprising a double-axis cylinder (50) arranged on the storage tank (16), the output shafts at both ends of the double-axis cylinder (50) are provided with linkage plates (51), the ends of the linkage plates (51) facing the storage tank (16) are provided with push-pull shafts (52) passing through the inner wall of the corresponding storage tank (16), and the opposite ends of the push-pull shafts (52) are jointly provided with pushing plates (53); The storage tank (16) has an inner wall provided with a sliding groove (54), an outer side of the push plate (53) is provided with a resisting plate (55) located in the sliding groove (54), a blocking strip (56) slides in the sliding groove (54), a return spring (57) is provided between the blocking strip (56) and the inner wall of the sliding groove (54), and exhaust grooves (58) are provided at both left and right ends of the sliding groove (54) and penetrate to the outer side of the storage tank (16) and are symmetrically distributed frontward and rearward.

2. The steam self-circulation system for evaporation of an amino acid crystallization tank according to claim 1, characterized in that: A filter assembly (6) for filtering steam is disposed at the lower end of the storage tank (16). The filter assembly (6) comprises a rectangular box (60) disposed at the left and right ends of the storage tank (16) and respectively connected to the front and rear corresponding exhaust grooves (58). An end of the rectangular box (60) away from the storage tank (16) is provided with a front-to-rear symmetrical mounting groove (61). A filter frame (62) is slidably mounted in the mounting groove (61). A filter screen (63) is mounted in the filter frame (62). A sealing strip is disposed at one end of the filter frame (62) located in the mounting groove (61) and is tightly attached to the inner wall of the mounting groove (61).

3. The steam self-circulation system for evaporation of an amino acid crystallization tank according to claim 2, characterized in that: The lower end of the rectangular box (60) is provided with a pipeline assembly (7) for discharging filtered gas into the crystallization tank (12); the pipeline assembly (7) comprises a one-way valve (70) arranged at the lower end of the rectangular box (60) and communicating therewith; the conical cover (13) is provided with a heat preservation pipe (71) passing through the outer side of the conical cover (13), the annular cavity (40) and the inner wall of the conical cover (13); the gas outlet end of the one-way valve (70) is connected to a circulation pipe (72) having one end passing through the corresponding heat preservation pipe (71) and communicating with the crystallization tank (12); A connecting pipe (73) is connected between the left-right symmetrical rectangular boxes (60), and an external connecting pipe (74) communicating with the connecting pipe (73) is arranged in the middle of the connecting pipe (73).

4. The steam self-circulation system for evaporation of an amino acid crystallization tank according to claim 1, characterized in that: The conical cover (13) is further provided with a scraping assembly (8) for scraping off the amino acid crystals on the inner wall of the conical cover (13), the scraping assembly (8) comprising a rotating ring (80) rotatably arranged on the upper end of the conical cover (13), a plurality of support bars (81) evenly distributed along the axis of the rotating ring (80) being installed on the outer side, a scraper (82) in close contact with the inner wall of the conical cover (13) being provided on the upper end of the support bar (81), and an annular plate (83) being provided on the inner wall of the upper end of the crystallization tank (12); The annular plate (83) is provided with a wave groove (84) evenly distributed along its axis, and the support bar (81) is also provided with an L-shaped plate (85), and one end of the L-shaped plate (85) away from the support bar (81) is located between the heating plate (17) and the annular plate (83).

5. The steam self-circulation system for evaporation of an amino acid crystallization tank according to claim 1, characterized in that: The support column (10) is provided with a driving assembly (3) for driving the crystallization tank (12) to rotate and move up and down. The driving assembly (3) comprises a driving gear ring (30) arranged on the outside of the crystallization tank (12). A driving motor (31) is arranged on the annular ring (11) through a motor seat. A driving gear (32) meshing with the driving gear ring (30) is arranged on the outside of the main shaft of the driving motor (31). A driving cylinder (33) is also arranged above the bottom plate (1), and the telescopic end of the driving cylinder (33) is connected to the circular plate (21).

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