Efficient production process of food-grade calcium lactate

Abstract

The invention relates to an efficient production process of food-grade calcium lactate, and relates to the technical field of calcium lactate production and processing. The invention also relates to high-efficiency production equipment of food-grade calcium lactate. The equipment comprises a crystallization kettle and a cooling crystallizer for extracting and crystallizing a calcium lactate solution, the cooling crystallizer comprises two bearing support plates which are symmetrically distributed and used for bearing a calcium lactate solution, two groups of symmetrical special spray heads are arranged on the bearing support plates, and semiconductor refrigeration parts are further arranged in the bearing support plates; the bearing supporting plate is matched with the special spray head to control the thickness of calcium lactate crystals, when the bearing supporting plate bears a calcium lactate solution, the attached calcium lactate solution is cooled and crystallized to form a thin layer, the rate of conversion from the calcium lactate solution to crystallization is greatly increased, and the condition that the calcium lactate solution and the calcium lactate crystals coexist is avoided; furthermore, along with the overturning of the bearing supporting plate, the synchronous operation of cooling crystallization and crystal collection of the calcium lactate solution is realized, and the high efficiency of calcium lactate production is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of calcium lactate production and processing, and in particular to a high-efficiency production process of food-grade calcium lactate. Background Art

[0002] Food grade calcium lactate is white to milky white crystals or powder, basically odorless and tasteless, and slightly weathering when exposed to air. Calcium lactate has the characteristics of high solubility, fast dissolution rate, and high bioavailability. It is an excellent calcium supplement and can be used as an auxiliary raw material for dairy products, a pharmaceutical raw material, or a food additive.

[0003] Calcium lactate is widely used as a food additive, especially in dairy products, beverages and food supplements to enhance the nutritional value and taste of food. Calcium lactate is a common calcium source in children's nutritional foods, which helps the development of children's bones and teeth. Calcium lactate is also used in the medical field as a nutritional supplement to supplement calcium.

[0004] For example, a Chinese patent with publication number CN102205184A discloses a hub-type calcium lactate crystallization production process, which includes a transmission mechanism, a hub, a scraper, a calcium lactate solution storage tank and a calcium lactate crystal collector. The hub crystallization device is used to produce flaky calcium lactate. There is no discharge of mother liquor and polluting waste during the entire production process. The production process can be continuously produced, with a small footprint, a simple process, and convenient operation. The generated calcium lactate crystals are in the form of thin flakes, which are easy to dry and suitable for large-scale production.

[0005] However, the above calcium lactate production device still has some shortcomings in actual use: 1. The above-mentioned prior art can improve the crystallization efficiency in the calcium lactate production process. However, when the hub rotates, it cannot ensure that the calcium lactate solution is evenly distributed on the hub surface, resulting in the inability of the calcium lactate solution to adhere to the hub surface, further making the hub prone to idling, thereby affecting the crystallization of the calcium lactate solution; secondly, after the scraper scrapes off the crystals on the hub surface, the hub surface will gradually become smooth, which will aggravate the situation in which the calcium lactate solution cannot adhere to the hub surface.

[0006] 2. Secondly, when calcium lactate is produced, the efficiency of converting the calcium lactate solution into crystals is slow, which will affect the efficiency of the entire calcium lactate production. In addition, in the prior art, calcium lactate is easily contaminated by the external environment during crystallization.

[0007] Therefore, under the viewpoint stated above, there is still room for improvement in the existing calcium lactate production equipment. Summary of the invention

[0008] In order to solve the above problems, the present invention provides a food-grade calcium lactate efficient production process, using the following technical solutions: In a first aspect, a highly efficient production process for food-grade calcium lactate also relates to a highly efficient production equipment for food-grade calcium lactate, which includes a crystallization kettle for processing calcium lactate and a cooling crystallizer for extracting crystals from a calcium lactate solution.

[0009] The process comprises the following steps: S1: preparing food-grade lactic acid and food-grade calcium hydroxide as raw materials, using water as a reaction medium, and neutralizing the two to generate a calcium lactate solution; S2: adding lactic acid to adjust the pH value of the solution to between 3.0 and 4.0, so that the calcium carbonate generated by the deterioration of calcium hydroxide can react completely, and then using calcium hydroxide slurry to adjust the pH value to between 5.0 and 6.0; S3: After the mixed raw materials are neutralized to generate calcium lactate solution, the reaction solution is transported to a crystallization kettle for cooling and crystallization, and the solution is batch cooled by a cooling crystallizer to speed up its cooling efficiency; S4: After the calcium lactate crystals are produced in the cooling crystallizer, the calcium lactate crystals are collected while continuing to be produced, thereby realizing continuous batch operation of calcium lactate crystals; S5: After the crystals are completely cooled and solidified, they are crushed, washed with cold water, and centrifuged to remove the mother liquor; S6: The washed crystals are dried, crushed, sieved and packaged to obtain finished products.

[0010] In the second aspect, the cooling crystallizer includes two symmetrically distributed supporting plates rotatably connected inside the crystallization kettle and carrying the calcium lactate solution. The supporting plates are in an I-shaped structure, and two groups of special nozzles for spraying the calcium lactate solution are symmetrically provided on the supporting plates along the height direction. The special nozzles slide horizontally along the length direction of the supporting plates. A strip groove is provided through the middle of one side of the supporting plate, and a semiconductor refrigeration component for controlling the temperature and cooling the supporting plate is installed in the strip groove of the supporting plate.

[0011] Preferably, a control motor for controlling the rotation of a supporting plate is provided on the outer wall of the crystallization kettle through a bracket, and the output end of the control motor rotates through the crystallization kettle and extends into the interior thereof, a control gear is provided on the same side of the two supporting plates, a control belt is jointly sleeved on the two control gears, and the output end of the control motor is connected to one of the control gears in the crystallization kettle.

[0012] Preferably, the top and bottom of the supporting pallet are also provided with crystallization plates that are in direct contact with the calcium lactate solution, and a crystallization reaction zone that supports and cools the calcium lactate solution and causes it to crystallize is formed between the two crystallization plates and the supporting pallet, the two crystallization plates slide relative to each other along the height direction of the supporting pallet, and the inner side of the crystallization plates is bonded with the same semiconductor refrigeration component as that on the supporting pallet, and a reset tension spring is installed between the two crystallization plates and the supporting pallet.

[0013] Preferably, integrated rubber sealing rings are provided on the four sides of the crystallization plate, and mounting grooves for installing the rubber sealing rings are opened on the four sides of the crystallization plate, and the rubber sealing rings are against the bearing support plate.

[0014] Preferably, a linkage blanking component is also provided between the crystallization plate and the supporting plate, and the linkage blanking component includes a linkage pressure plate symmetrically slidably arranged at both ends of the supporting plate, one side of the linkage pressure plate is a rack structure, and a linkage gear is meshed on the linkage pressure plate, and the linkage gear is rotatably arranged in the supporting plate, and a horizontal rack is also meshed at the bottom of the linkage gear, and the horizontal rack is slidably arranged in the supporting plate.

[0015] The horizontal rack is meshed with a lifting gear rotatably arranged on the inner wall of the supporting plate, and lifting rods are arranged on both sides of the lifting gear. The end of the lifting rod away from the lifting gear is hinged to a linkage slider, and the linkage slider is slidably arranged at the bottom of the crystallization plate along the length direction thereof.

[0016] Preferably, a linkage tension spring is provided between the linkage pressure plate and the bearing support plate.

[0017] Preferably, an arc-shaped linkage guide plate is further provided on the inner wall of the crystallization kettle, one end of the arc-shaped linkage guide plate abuts against the top of the linkage pressure plate, and the other end of the arc-shaped linkage guide plate extends toward the bottom of the bearing support plate.

[0018] Preferably, the top and bottom of the bearing pallet are provided with symmetrically distributed guide members along the length direction, and the guide members include a guide column arranged on one side of the bearing pallet and a reciprocating threaded rod arranged on the other side of the same plane of the bearing pallet, the guide column is arranged on the bearing pallet, and the reciprocating threaded rod is rotatably arranged on the bearing pallet.

[0019] Preferably, one side of the reciprocating threaded rod is also connected to a driving gear, and the driving gear is arranged on the side wall of the carrying pallet. A starting gear is also meshed between several driving gears on one side of the carrying pallet. A starting motor is arranged on the starting gear, and the starting motor is arranged on the side wall of the carrying pallet.

[0020] Preferably, the special nozzle includes a solution delivery plate, the top of the solution delivery plate is provided with a liquid inlet connected to the outside, the bottom of the solution delivery plate is provided with liquid outlets at equal intervals, and a triangular sealing block is also slidably provided inside the solution delivery plate along the width direction, a special tension spring is connected between the triangular sealing block and the solution delivery plate, the inclined surface of the triangular sealing block faces downward and is in contact with a resistance rod, and the resistance rod extends downward through the solution delivery plate and outward.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. The cooperation between the supporting plate and the crystallization plate of the present application can ensure that when calcium lactate crystallizes, its thickness is within a certain range and is in the form of thin sheets, which is convenient for subsequent crushing. At the same time, the supporting plate and the crystallization plate can carry the calcium lactate solution, and the calcium lactate solution is sprayed in the form of mist, so that the calcium lactate solution attached to the crystallization plate is a thin layer, which greatly accelerates the rate of transformation of the calcium lactate solution to crystallization and avoids the coexistence of the calcium lactate solution and the calcium lactate crystals.

[0022] 2. After the calcium lactate solution in the present invention is sprayed onto the crystallization plate, its crystallization efficiency can be greatly accelerated due to its large contact area and small thickness, thereby ensuring the controllability of the crystallization of the calcium lactate solution.

[0023] 3. The supporting plate in the present invention can be flipped back and forth, so that the calcium lactate solution can be crystallized and collected simultaneously, which realizes the automated processing and unloading of calcium lactate crystals, ensures the batch production of calcium lactate crystals, and can effectively improve the production efficiency of calcium lactate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a schematic diagram of the main structure of the food-grade calcium lactate efficient production equipment of the present invention.

[0026] Figure 2 It is a first-view structural schematic diagram of the cooling crystallizer of the present invention.

[0027] Figure 3 It is a second perspective structural schematic diagram of the cooling crystallizer of the present invention.

[0028] Figure 4 It is a schematic diagram of the structure between the carrying support plate and the semiconductor refrigeration component of the present invention.

[0029] Figure 5 It is a first-view structural schematic diagram of the linkage blanking component of the present invention.

[0030] Figure 6 The present invention Figure 5 A partial enlarged view of point A in the figure.

[0031] Figure 7 It is a second perspective structural schematic diagram of the linkage blanking component of the present invention.

[0032] Figure 8 It is a third perspective structural schematic diagram of the linkage blanking component of the present invention.

[0033] Fig. 9 It is a structural schematic diagram of the guide member of the present invention.

[0034] Fig.10 It is a schematic diagram of the structure among the solution conveying plate, the liquid inlet, the liquid outlet and the abutment rod of the present invention.

[0035] Fig.11 The invention is a schematic diagram of the structure among the solution conveying plate, the liquid inlet, the liquid outlet, the triangular sealing block, the special tension spring and the abutment rod.

[0036] Fig.12 The present invention is a flow chart of the efficient production process of food-grade calcium lactate.

[0037] Explanation of the accompanying drawings: 1. Crystallization kettle; 2. Cooling crystallizer; 20. Carrying tray; 21. Special nozzle; 22. Strip groove; 23. Semiconductor refrigeration component; 10. Control motor; 11. Control gear; 12. Control belt; 13. Crystallization plate; 14. Crystallization reaction zone; 15. Reset spring; 16. Rubber sealing ring; 3. Linkage unloading component; 30. Linkage pressure plate; 31. Linkage gear; 32. Horizontal rack; 33. Lifting gear; 34. Lifting rod; 35. Linkage slider; 36. Linkage spring; 37. Arc linkage guide plate; 4. Guide member; 40. Guide column; 41. Reciprocating threaded rod; 42. Driving gear; 43. Starting gear; 44. Starting motor; 50. Solution delivery plate; 51. Liquid inlet; 52. Liquid outlet; 53. Triangular sealing block; 54. Special spring; 55. Resistance rod. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-Figure 12 This application is described in further detail.

[0039] The embodiment of the present application discloses an efficient production process for food-grade calcium lactate; it is explained that the efficient production process for calcium lactate is mainly used in the process of calcium lactate production and processing, and in terms of technical effect, it can avoid the problem that when calcium lactate is produced, the efficiency of converting its calcium lactate solution into crystals is slow, thereby affecting the efficiency of the entire calcium lactate production, and in the prior art, calcium lactate is easily polluted by the external environment during crystallization.

[0040] Secondly, when preparing calcium lactate crystals in the prior art, the efficiency of the rotation of calcium lactate crystals is low, resulting in the coexistence of calcium lactate solution and calcium lactate crystals. At this time, when the calcium lactate crystals are extracted, the calcium lactate solution is easily wasted.

[0041] First, the efficient production process of food-grade calcium lactate is as follows: S1: Prepare food-grade lactic acid and food-grade calcium hydroxide as raw materials, use water as a reaction medium, and neutralize the two to generate a calcium lactate solution.

[0042] S2: Add lactic acid to adjust the pH value of the solution to between 3.0 and 4.0, so that the calcium carbonate generated by the deterioration of calcium hydroxide can react completely. Then, use calcium hydroxide slurry to adjust the pH value to between 5.0 and 6.0.

[0043] S3: After the mixed raw materials are neutralized to generate calcium lactate solution, the reaction solution is transported to the crystallization kettle 1 for cooling and crystallization, and the solution is batch cooled by the cooling crystallizer 2 to speed up its cooling efficiency.

[0044] S4: After the calcium lactate crystals are produced in the cooling crystallizer 2, the calcium lactate crystals are collected while continuing to be produced, thereby realizing continuous batch operation of calcium lactate crystals.

[0045] S5: After the crystals are completely cooled and solidified, they are crushed, washed with cold water, and centrifuged to remove the mother liquor.

[0046] S6: The washed crystals are dried, crushed, sieved and packaged to obtain finished products.

[0047] It should be noted that the food grade lactic acid is slowly added to the calcium hydroxide slurry.

[0048] The amount of lactic acid added should be slightly excessive to keep the pH value between 3.0 and 4.0 so that the calcium carbonate generated by the deterioration of calcium hydroxide can react completely.

[0049] The reaction temperature should be controlled below 85°C. Furthermore, the solution temperature of the measured pH value should be between 80-85°C.

[0050] After the lactic acid addition is completed, the pH value is adjusted to a specific range using a calcium hydroxide slurry. Further, the pH specific range is 5.0-6.0. Further, the solution temperature of the pH value measured above should be between 80-85°C.

[0051] The equipment is made of food grade stainless steel.

[0052] The cold water used for washing is deionized water below 10°C, preferably 3-7°C deionized water.

[0053] The equipment used in this application is made of food-grade stainless steel, and the environment is a Class D clean area.

[0054] Embodiment 1: Reference Figure 1 As shown, it is a schematic diagram of the structure of the efficient production equipment of food-grade calcium lactate in this application; it includes a crystallization kettle 1 for calcium lactate processing and a cooling crystallizer 2 for extracting crystals from the calcium lactate solution.

[0055] The crystallization kettle 1 is mainly used for cooling and solidifying the calcium lactate solution, and the cooling crystallizer 2 is arranged inside the crystallization kettle 1 to ensure the rapid solidification of the calcium lactate solution.

[0056] See also Figure 2 and Figure 3 As shown, it is a schematic diagram of the structure of the cooling crystallizer 1; the cooling crystallizer 2 includes two symmetrically distributed supporting plates 20 that are rotatably connected inside the crystallizer 1 and carry the calcium lactate solution. The supporting plate 20 is in an I-shaped structure, and the supporting plate 20 is symmetrically provided with two groups of special nozzles 21 for spraying the calcium lactate solution along the height direction. The special nozzles 21 slide horizontally along the length direction of the supporting plate 20. A strip groove 22 is penetrated in the middle of one side of the supporting plate 20, and a semiconductor refrigeration component 23 for controlling the temperature and cooling the supporting plate 20 is installed in the strip groove 22 of the supporting plate 20.

[0057] The semiconductor refrigeration element 23 is installed in the strip groove 22 on the support plate 20 by plugging, so that the semiconductor refrigeration element 23 can be quickly maintained and replaced, and regular maintenance is performed to ensure that the semiconductor refrigeration element 23 is always in the best working condition.

[0058] It should be noted that the support plate 20 is made of a heat-conducting material, and when the semiconductor refrigeration element 23 is working, the temperature of the support plate 20 can be timely controlled. The semiconductor refrigeration element 23 is a known structure, which is a device that uses the Peltier effect of semiconductor materials to achieve cooling or heating. The Peltier effect refers to the fact that when direct current passes through a galvanic couple composed of two different semiconductor materials, heat is absorbed and released at both ends of the galvanic couple, thereby achieving a cooling effect.

[0059] During the specific implementation, the dedicated nozzle 21 on the supporting plate 20 is connected to the pre-prepared calcium lactate solution outside to ensure that the dedicated nozzle 21 can spray the calcium lactate solution outward, and then the calcium lactate solution can be cooled and crystallized, as shown below.

[0060] In the initial state, the supporting plate 20 in the crystallization kettle 1 is in a horizontal state, and then the special nozzle 21 sprays the calcium lactate solution onto the upper end surface of the supporting plate 20, so that the calcium lactate solution can be evenly sprayed onto the supporting plate 20 and the crystallization plate 13, and the semiconductor refrigeration component 23 on the supporting plate 20 will pre-control the temperature of the supporting plate 20 at the optimal temperature for cooling and solidification of the calcium lactate solution, ensuring that the calcium lactate solution is sprayed in the form of mist onto the crystallization plate 13 and the supporting plate 20. After that, the calcium lactate solution can be thinly spread on the crystallization plate 13. At this time, the thin sheet of calcium lactate solution can be quickly affected by the temperature of the supporting plate 20 and the crystallization plate 13 and change rapidly, causing it to transform into crystallization, until the thin sheet of calcium lactate solution quickly becomes crystalline within a certain period of time.

[0061] The cooperation of the supporting plate 20 and the crystallization plate 13 of the present application can ensure that the thickness of the calcium lactate crystals is within a certain range and is in the form of thin sheets, which is convenient for subsequent crushing. At the same time, the supporting plate 20 and the crystallization plate 13 can carry the calcium lactate solution to avoid the situation where the calcium lactate solution cannot adhere. At the same time, the calcium lactate solution is sprayed out in the form of mist, so that the calcium lactate solution attached to the crystallization plate 13 is a thin layer, which greatly accelerates the rate of transformation of the calcium lactate solution to crystallization and avoids the coexistence of the calcium lactate solution and calcium lactate crystals.

[0062] Look again Figure 2 and Figure 3 As shown, it is a schematic diagram of the structure for realizing continuous automatic generation and large-scale production of calcium lactate crystals in a crystallization kettle 1 in the present application; a control motor 10 for controlling the rotation of a bearing support plate 20 is provided on the outer wall of the crystallization kettle 1 through a bracket, and the output end of the control motor 10 rotates through the crystallization kettle 1 and extends inside thereof, and control gears 11 are provided on the same side of the two bearing support plates 20, and a control belt 12 is commonly sleeved on the two control gears 11, and the output end of the control motor 10 is connected to one of the control gears 11 in the crystallization kettle 1.

[0063] In the initial state, the supporting tray 20 and the crystallization plate 13 in the crystallization kettle 1 are in a horizontal state. When the upper end surface completes the spraying and cooling crystallization of the calcium lactate solution, the control motor 10 is started, and the control motor 10 drives the supporting tray 20 and the crystallization plate 13 in the crystallization kettle 1 to rotate, so that the supporting tray 20 and the crystallization plate 13 that have just attached the calcium lactate solution rotate to the bottom, and the other side of the supporting tray 20 and the crystallization plate 13 on the other side of the supporting tray 20 rotate to the top. At this time, the special nozzle 21 on the other side of the supporting tray 20 sprays the calcium lactate solution on the crystallization plate 13 on the other side of the supporting tray 20 and cools and crystallizes it, and the side of the supporting tray 20 that has completed the calcium lactate crystallization simultaneously performs the operation of shoveling the calcium lactate crystals, which realizes the simultaneous operation of cooling and crystallizing the calcium lactate solution and unloading, greatly reducing the production time of the calcium lactate solution, and at the same time, the reciprocating flipping of the supporting tray 20 can realize the automatic and continuous production of calcium lactate crystals.

[0064] Reference Figure 4 and Figure 5 As shown, it is a structural schematic diagram of the crystallization plate 13 in the present application. Specifically, the top and bottom of the supporting pallet 20 are also provided with crystallization plates 13 that are in direct contact with the calcium lactate solution, and a crystallization reaction zone 14 for supporting and cooling the calcium lactate solution and causing it to crystallize is formed between the two crystallization plates 13 and the supporting pallet 20. The two crystallization plates 13 slide relative to each other along the height direction of the supporting pallet 20, and the inner side of the crystallization plate 13 is bonded with a semiconductor refrigeration component 23 that is the same as that on the supporting pallet 20, and a reset tension spring 15 is installed between the two crystallization plates 13 and the supporting pallet 20.

[0065] In the initial state, the crystallization plate 13 is pulled by the reset spring 15, so that the crystallization plate 13 is always close to the middle of the supporting plate 20 in the initial state, so that the crystallization reaction area 14 between the crystallization plate 13 and the supporting plate 20 is exposed. At this time, the special nozzle 21 sprays the calcium lactate solution onto the crystallization plate 13. Because the crystallization plate 13 is close to the middle of the supporting plate 20 and the crystallization plate 13 is surrounded by the supporting plate 20, it can effectively prevent the calcium lactate solution from splashing when spraying onto the crystallization plate 13.

[0066] After the calcium lactate solution sprayed on the crystallization plate 13 cools and crystallizes, the crystallization plate 13 moves away from the middle of the support plate 20 , so that the crystallization plate 13 scrapes off the calcium lactate crystals attached to the side wall of the support plate 20 .

[0067] Reference Figure 5 and Figure 6As shown, specifically, an integrated rubber sealing ring 16 is provided on the four sides of the crystallization plate 13 , and installation grooves for installing the rubber sealing ring 16 are opened on the four sides of the crystallization plate 13 , and the rubber sealing ring 16 rests on the supporting plate 20 .

[0068] When the surface of the crystallization plate 13 is sprayed with calcium lactate solution, the rubber sealing ring 16 fits tightly against the side wall of the supporting plate 20, thereby preventing the calcium lactate solution from leaking from the gap between the two.

[0069] See also Figure 5 , Figure 7 and Figure 8 As shown, it is a structural schematic diagram of controlling the movement of the crystallization plate 13 in the present application; a linkage unloading component 3 is also arranged between the crystallization plate 13 and the bearing tray 20, and the linkage unloading component 3 includes a linkage pressure plate 30 symmetrically slidably arranged at both ends of the bearing tray 20, one side of the linkage pressure plate 30 is a rack structure, and a linkage gear 31 is meshed on the linkage pressure plate 30, and the linkage gear 31 is rotatably arranged in the bearing tray 20, and a horizontal rack 32 is also meshed at the bottom of the linkage gear 31, and the horizontal rack 32 is slidably arranged in the bearing tray 20.

[0070] An arc-shaped linkage guide plate 37 is further provided on the inner wall of the crystallization kettle 1 , one end of the arc-shaped linkage guide plate 37 abuts against the top of the linkage pressure plate 30 , and the other end of the arc-shaped linkage guide plate 37 extends toward the bottom of the supporting plate 20 .

[0071] The horizontal rack 32 is meshed with a lifting gear 33 that is rotatably arranged on the inner wall of the supporting plate 20. Lifting rods 34 are arranged on both sides of the lifting gear 33. One end of the lifting rod 34 away from the lifting gear 33 is hinged to a linkage slider 35. The linkage slider 35 is slidable along the length direction of the crystallization plate 13 and is arranged at the bottom thereof.

[0072] A linkage tension spring 36 is provided between the linkage pressure plate 30 and the bearing support plate 20 .

[0073] An arc-shaped linkage guide plate 37 is further provided on the inner wall of the crystallization kettle 1 , one end of the arc-shaped linkage guide plate 37 abuts against the top of the linkage pressure plate 30 , and the other end of the arc-shaped linkage guide plate 37 extends toward the bottom of the supporting plate 20 .

[0074] During the specific implementation process, when the control motor 10 controls the carrying pallet 20 to rotate, the linkage pressure plate 30 on the carrying pallet 20 will contact the arc-shaped linkage guide plate 37. At this time, the arc-shaped linkage guide plate 37 squeezes the linkage pressure plate 30 to make it move toward the inside of the carrying pallet 20. At this time, the linkage pressure plate 30 drives the linkage gear 31 to rotate, and the linkage gear 31 controls the horizontal rack 32 to move. The horizontal rack 32 controls the lifting gear 33 to rotate, and then the lifting gear 33 squeezes the crystallization plate 13 through the lifting rod 34, so that the crystallization plate 13 moves outward until the crystallization plate 13 rests against the bottom of the dedicated nozzle 21.

[0075] See also Fig. 9 and Fig.10 As shown, the top and bottom of the load-bearing pallet 20 are provided with symmetrically distributed guide members 4 along the length direction, and the guide members 4 include a guide column 40 arranged on one side of the load-bearing pallet 20 and a reciprocating threaded rod 41 arranged on the other side of the same plane of the load-bearing pallet 20. The guide column 40 is arranged on the load-bearing pallet 20, and the reciprocating threaded rod 41 is rotatably arranged on the load-bearing pallet 20.

[0076] Furthermore, in order to ensure that the calcium lactate solution can be evenly sprayed onto the crystallization plate 13, the starting motor 44 is driven, and the starting motor 44 controls the reciprocating threaded rod 41 to rotate through the driving gear 42. Then the reciprocating threaded rod 41 drives the special nozzle screwed on its upper end to move back and forth along the reciprocating threaded rod 41. During this process, the special nozzle 21 can spray the calcium lactate solution evenly onto the crystallization plate 13, so that it is cooled into calcium lactate crystals.

[0077] When the crystallization plate 13 is turned over and abuts against the special nozzle 21, the crystals attached to the crystallization plate 13 are scraped off as the special nozzle 21 moves, and the scraped crystals fall to the bottom of the crystallization kettle 1 for unified collection.

[0078] A driving gear 42 is also connected to one side of the reciprocating threaded rod 41, and the driving gear 42 is arranged on the side wall of the supporting pallet 20. A starting gear 43 is also meshed between several driving gears 42 on one side of the supporting pallet 20. A starting motor 44 is arranged on the starting gear 43, and the starting motor 44 is arranged on the side wall of the supporting pallet 20.

[0079] The starting motor 44 is arranged on the side wall of the supporting plate 20 and is waterproofed to avoid being affected inside the crystallization kettle 1 .

[0080] Embodiment 2: Reference Fig.10 and Fig.11As shown, on the basis of Example 1, in order to further ensure the efficiency of collecting the calcium lactate solution after cooling and crystallization and the high efficiency of collecting calcium lactate crystals, the present application also proposes a linkage component inside the special nozzle 21, which can realize the switching of the two special nozzles 21 at the top and bottom of the supporting plate 20 to spray the calcium lactate solution; specifically, the special nozzle 21 includes a solution delivery plate 50, the top of the solution delivery plate 50 is provided with a liquid inlet 51 connected to the outside, the bottom of the solution delivery plate is evenly spaced with liquid outlets 52, and the solution delivery plate 50 is also slidably provided with a triangular sealing block 53 along the width direction, a special tension spring 54 is connected between the triangular sealing block 53 and the solution delivery plate 50, the inclined surface of the triangular sealing block 53 faces downward, and is in contact with a resistance rod 55, and the resistance rod 55 extends downward through the solution delivery plate 50 and outward.

[0081] It should be noted that a scraper is provided at the bottom corner of the special nozzle 21. When the crystallization plate 13 is against the bottom of the special nozzle 21, the scraper at the bottom of the special nozzle 21 can be used to scrape the crystallization plate 13 to separate the calcium lactate crystals on the surface of the crystallization plate 13.

[0082] During the specific implementation process, when the crystallization plate 13 moves outward and abuts against the special nozzle 21, the resistance rod 55 is squeezed during this process, and the resistance rod 55 squeezes the triangular sealing block 53, so that the triangular sealing block 53 moves on the internal horizontal plate of the special nozzle 21 until the triangular sealing block 53 closes the liquid inlet 51 and the liquid outlet 52 in the special nozzle 21, thereby preventing the crystallized calcium lactate on the crystallization plate 13 from being removed and the debris generated from the debris clogging the liquid outlet 52 on the special nozzle 21; at the same time, it can also prevent liquid leakage from occurring in the special nozzle 21 during the crystallization and separation of calcium lactate.

[0083] See also Fig.12 Shown is a flow chart of the efficient production process of food-grade calcium lactate.

[0084] During operation: The first step is to prepare food-grade lactic acid and food-grade calcium hydroxide as raw materials, use water as the reaction medium, mix the two in a certain mass ratio, and neutralize them to generate calcium lactate solution.

[0085] In the second step, a slightly excessive amount of lactic acid is added and the pH is adjusted to a specific value using calcium hydroxide slurry.

[0086] The third step is to spray the calcium lactate solution onto the upper end surface of the supporting plate 20 with the dedicated nozzle 21 after the mixed raw materials are neutralized to generate the calcium lactate solution, so that the calcium lactate solution can be evenly sprayed onto the supporting plate 20 and the crystallization plate 13, and the semiconductor refrigeration component 23 on the supporting plate 20 will pre-control the temperature of the supporting plate 20 at the optimal temperature for cooling and solidification of the calcium lactate solution, and the calcium lactate solution can be thinly spread on the crystallization plate 13. At this time, the thin sheet of calcium lactate solution can be quickly affected by the temperature of the supporting plate 20 and the crystallization plate 13 and change rapidly, causing it to transform into crystals, until the thin sheet of calcium lactate solution quickly becomes crystalline within a certain period of time.

[0087] The fourth step is to start the control motor 10 after the spraying and cooling crystallization of the calcium lactate solution on the upper end surface of the supporting plate 20 is completed. The control motor 10 drives the supporting plate 20 and the crystallization plate 13 in the crystallization kettle 1 to rotate, so that the supporting plate 20 and the crystallization plate 13 that have just been attached with the calcium lactate solution rotate to the bottom, and simultaneously remove the calcium lactate crystals from the side of the supporting plate 20 that has completed the calcium lactate crystallization.

[0088] At the same time, the other side of the supporting pallet 20 and the crystallization plate 13 on the other side of the supporting pallet 20 rotate to the top. At this time, the special nozzle 21 on the other side of the supporting pallet 20 sprays calcium lactate solution to the crystallization plate 13 on the other side of the supporting pallet 20 and cools and crystallizes it.

[0089] In the fifth step, the above operation is then repeated, and the above operation is then repeated to simultaneously crystallize calcium lactate on both sides of the supporting pallet 20, as well as perform separation operations after crystallization, which greatly reduces the production time of the calcium lactate solution. At the same time, the reciprocating flipping of the supporting pallet 20 can realize the automated and continuous production of calcium lactate crystals.

[0090] Step 6: After the crystals are completely cooled and solidified, they are crushed, washed with cold water, and centrifuged to remove the mother liquor.

[0091] Step 7: The washed crystals are dried, crushed, sieved and packaged to obtain the finished product.

[0092] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A food-grade calcium lactate efficient production process, characterized in that: It also relates to a highly efficient food-grade calcium lactate production device, comprising a crystallization kettle (1) for processing calcium lactate and a cooling crystallizer (2) for extracting crystals from a calcium lactate solution; The process comprises the following steps: S1: preparing food-grade lactic acid and food-grade calcium hydroxide as raw materials, using water as a reaction medium, and neutralizing the two to generate a calcium lactate solution; S2: adding lactic acid to adjust the pH value of the solution to between 3.0 and 4.0, so that the calcium carbonate generated by the deterioration of calcium hydroxide can react completely, and then using calcium hydroxide slurry to adjust the pH value to between 5.0 and 6.0; S3: After the mixed raw materials are neutralized to generate a calcium lactate solution, the reaction solution is transported to a crystallization kettle (1) for cooling and crystallization, and the solution is batch cooled by a cooling crystallizer (2) to increase the cooling efficiency; S4: After the calcium lactate crystals are produced in the cooling crystallizer (2), the calcium lactate crystals are collected while continuing to be produced, thereby achieving continuous batch operation of calcium lactate crystals; S5: After the crystals are completely cooled and solidified, they are crushed, washed with cold water, and centrifuged to remove the mother liquor; S6: The washed crystals are dried, crushed, sieved and packaged to obtain finished products; The cooling crystallizer (2) comprises two symmetrically distributed supporting plates (20) rotatably connected inside the crystallization kettle (1) and supporting the calcium lactate solution. The supporting plates (20) are in an I-shaped structure, and the supporting plates (20) are symmetrically provided with two groups of special nozzles (21) for spraying the calcium lactate solution along the height direction. The special nozzles (21) slide horizontally along the length direction of the supporting plates (20). A strip groove (22) is provided through the middle of one side of the supporting plate (20), and a semiconductor refrigeration component (23) for controlling the temperature and cooling the supporting plate (20) is installed in the strip groove (22) of the supporting plate (20).

2. A food-grade calcium lactate efficient production process according to claim 1, characterized in that: A control motor (10) for controlling the rotation of a supporting plate (20) is provided on the outer wall of the crystallization kettle (1) via a bracket, the output end of the control motor (10) rotatably penetrates the crystallization kettle (1) and extends toward the inside thereof, a control gear (11) is provided on the same side of the two supporting plates (20), a control belt (12) is commonly sleeved on the two control gears (11), and the output end of the control motor (10) is connected to one of the control gears (11) in the crystallization kettle (1).

3. A food-grade calcium lactate efficient production process according to claim 1, characterized in that: The top and bottom of the supporting pallet (20) are also provided with crystallization plates (13) in direct contact with the calcium lactate solution, and a crystallization reaction zone (14) is formed between the two crystallization plates (13) and the supporting pallet (20) to support and cool the calcium lactate solution and cause it to crystallize. The two crystallization plates (13) slide relative to each other along the height direction of the supporting pallet (20), and the inner side of the crystallization plate (13) is bonded with a semiconductor refrigeration component (23) that is the same as that on the supporting pallet (20), and a reset tension spring (15) is installed between the two crystallization plates (13) and the supporting pallet (20).

4. A food-grade calcium lactate efficient production process according to claim 3, characterized in that: An integrated rubber sealing ring (16) is provided on the four sides of the crystallization plate (13), and mounting grooves for mounting the rubber sealing ring (16) are provided on the four sides of the crystallization plate (13), and the rubber sealing ring (16) is abutted against the supporting plate (20).

5. A food-grade calcium lactate efficient production process according to claim 3, characterized in that: A linkage blanking component (3) is also provided between the crystallization plate (13) and the supporting plate (20), and the linkage blanking component (3) comprises linkage pressure plates (30) symmetrically and slidably arranged at both ends of the supporting plate (20), one side of the linkage pressure plate (30) is a rack structure, and a linkage gear (31) is meshed on the linkage pressure plate (30), and the linkage gear (31) is rotatably arranged in the supporting plate (20), and the bottom of the linkage gear (31) is also meshed with a horizontal rack (32), and the horizontal rack (32) is slidably arranged in the supporting plate (20); The horizontal rack (32) is meshed with a lifting gear (33) rotatably arranged on the inner wall of the supporting plate (20), and lifting rods (34) are arranged on both sides of the lifting gear (33). One end of the lifting rod (34) away from the lifting gear (33) is hinged to a linkage slider (35), and the linkage slider (35) is slidably arranged at the bottom of the crystallization plate (13) along the length direction thereof.

6. A food-grade calcium lactate efficient production process according to claim 5, characterized in that: A linkage tension spring (36) is provided between the linkage pressure plate (30) and the bearing support plate (20).

7. A food-grade calcium lactate efficient production process according to claim 1, characterized in that: An arc-shaped linkage guide plate (37) is also provided on the inner wall of the crystallization kettle (1), one end of the arc-shaped linkage guide plate (37) abuts against the top of the linkage pressure plate (30), and the other end of the arc-shaped linkage guide plate (37) extends toward the bottom of the supporting plate (20).

8. A food-grade calcium lactate efficient production process according to claim 1, characterized in that: The top and bottom of the bearing tray (20) are provided with symmetrically distributed guide members (4) along the length direction, and the guide members (4) include a guide column (40) provided on one side of the bearing tray (20) and a reciprocating threaded rod (41) provided on the other side of the same plane as the bearing tray (20), the guide column (40) being provided on the bearing tray (20), and the reciprocating threaded rod (41) being rotatably provided on the bearing tray (20).

9. A food-grade calcium lactate efficient production process according to claim 8, characterized in that: One side of the reciprocating threaded rod (41) is also connected to a driving gear (42), and the driving gear (42) is arranged on the side wall of the carrying pallet (20). A starting gear (43) is also meshed between the plurality of driving gears (42) on one side of the carrying pallet (20), and a starting motor (44) is arranged on the starting gear (43). The starting motor (44) is arranged on the side wall of the carrying pallet (20).

10. The efficient production process of food-grade calcium lactate according to claim 1, characterized in that: The special nozzle (21) comprises a solution delivery plate (50), the top of the solution delivery plate (50) is provided with a liquid inlet (51) connected to the outside, the bottom of the solution delivery plate (50) is provided with liquid outlets (52) at equal intervals, and a triangular sealing block (53) is also slidably provided in the solution delivery plate (50) along the width direction, a special tension spring (54) is connected between the triangular sealing block (53) and the solution delivery plate (50), the inclined surface of the triangular sealing block (53) faces downward and is in contact with a contact rod (55), and the contact rod (55) extends downward through the solution delivery plate (50) and outward.

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