A method for preparing A2β-casein children's milk

Abstract

The invention discloses a method for preparing A2β-casein children's milk, comprising the following steps: step 1, squeezing milk containing A2β-casein into a milk tank, and cooling the milk; step 2, inspecting the milk, and filtering the disease-free and harmless milk; step 3, adding an appropriate amount of water into a water bath, and making the liquid level of the water higher than a heating ball, then adding an ice-water mixture into a cooling cylinder, and starting a heating plate to heat the water in the water bath; step 4, controlling a solenoid valve to close, and passing milk into the heating ball, so that the milk is heated in the heating ball; step 5, controlling the solenoid valve to open, and pressing the milk in the heating ball into a cooling pipe located in the cooling cylinder to cool the milk; step 6, after the A2β-casein children's milk is sterilized, it is manually packed to complete the production of the A2β-casein children's milk; the method for preparing the A2β-casein children's milk is not only simple to operate but also can efficiently realize the preparation of the A2β-casein children's milk.

Description

Technical Field

[0001] The invention relates to the technical field of dairy products, and in particular to a method for preparing A2 beta-casein children's milk. Background Art

[0002] Casein is the protein with the highest content in cow's milk, accounting for about 80% of the milk protein content. According to the different amino acid composition and electrophoretic behavior, casein can be divided into αs-casein, β-casein and κ-casein, of which β-casein accounts for about 30-35% of the total casein in cow's milk. There are many variants of β-casein, the most common of which are A1β-casein and A2β-casein. Studies have found that A1β-casein will hydrolyze in the body to produce β-casomorphin (BCM-7), which will cause intestinal discomfort to the user, while A2β-casein will not produce this peptide when hydrolyzed in the human body, making A2β-casein more affinity for absorption. For children with weak digestive system function, A2β-casein is easier to absorb. Therefore, dairy products containing A2β-casein are more popular in the domestic and foreign markets. At present, when A2β-casein milk is produced, the milk is generally sterilized by pasteurization technology, and pasteurization technology will have the following effects on the quality of A2β-casein milk:

[0003] 1. When producing A2β-casein children's milk, since pasteurization is used to sterilize milk, it is generally necessary to heat the milk to 62-80 degrees and keep it for 30 minutes. When the bacteria are killed by high temperature, the temperature of the milk is quickly reduced to 4-5 degrees for storage. Since the temperature of heated milk is not too high, a water bath is generally used to heat the milk. However, since the protein will deteriorate when the temperature is too high, it is very important to control the water temperature to be constant. In the prior art, sensors are generally used to measure and detect water temperature. This method is cumbersome to operate, and the reaction is not fast enough, which will cause a large amount of protein loss.

[0004] 2. When producing A2β-casein children's milk, since bacteria multiply faster when the temperature is not high, and bacterial reproduction requires a large amount of protein, in order to retain more A2β-casein in the milk, the milk needs to be heated up quickly, but the existing equipment cannot meet this requirement;

[0005] 3. When producing A2β-casein children's milk, only some thermophilic bacteria, heat-resistant bacteria and spores remain after disinfection, but most of these bacteria are lactic acid bacteria, which are not only harmless to humans but also beneficial to health. However, in order to preserve the milk for a longer time, the milk needs to be quickly cooled after high-temperature disinfection to avoid the bacteria from multiplying in large numbers at the appropriate temperature during the cooling process, but the existing equipment cannot achieve the purpose of rapid cooling. Summary of the invention

[0006] The object of the present invention is to provide a method for preparing A2β-casein children's milk, which is not only simple to operate but also can efficiently prepare A2β-casein children's milk.

[0007] To achieve the above object, the present invention provides the following technical solution: a method for preparing A2β-casein children's milk, comprising the following steps:

[0008] Step 1: squeeze the milk containing A2β-casein into a milk tank and cool it to prevent the growth of microorganisms;

[0009] Step 2: Inspect the milk and filter the disease-free milk to remove impurities in the milk;

[0010] Step 3, add an appropriate amount of water into the water bath set on the frame, and make the water level higher than the heating ball, then add the ice-water mixture into the cooling cylinder set in the frame, start the heating plate to heat the water in the water bath, and at the same time control the power component to drive the stirring tube located in the heating ball to rotate, and the piston component to work to control the air pressure in the water bath at a set value, so that the boiling point of the water is reduced to the temperature required for pasteurization, and the heating plate heats the water to boiling;

[0011] Step 4, control the solenoid valve to close, and introduce milk into the heating ball to heat the milk in the heating ball. When the temperature of the milk is heated to the same temperature as the water, maintain it for 30 minutes;

[0012] Step 5, control the solenoid valve to open, press the milk in the heating ball into the cooling pipe in the cooling cylinder to cool the milk, and make the milk flow into the storage cylinder for cooling, so as to inhibit the growth of bacteria;

[0013] Step 6: After the A2β-casein children's milk is sterilized, the milk is filled and sealed by a filling machine, and then manually packed to complete the production of A2β-casein children's milk.

[0014] Further, the water bath is fixedly arranged at the upper end of the frame, a heating plate is provided at the bottom of the water bath, the cooling tube is fixedly arranged in the frame and is located directly below the water bath, and the side wall of the cooling tube is provided with a lower through hole and an upper through hole connected to the cooling tube; the bottom of the water bath is movably connected with a shaft arranged in the vertical direction, the bottom of the water bath is provided with a first convex sleeve, the upper end of the shaft is provided with a first piston body located in the first convex sleeve, the first convex sleeve is provided with a first spring for forcing the first piston body to move upward, the heating ball is rotatably connected to the upper end of the first piston body and is located in the water bath; the upper end of the water bath is fixedly provided with a cover plate, the cover plate is provided with a first inlet, and a plugging cover covering the first inlet; the heating ball is provided with a first sliding tube extending upward and slidably connected in the cover plate, and a second sliding tube extending downward and slidably connected to the bottom of the water bath, and the lower end of the second sliding tube is provided with an electromagnetic valve; one end of the first piston body extending into the heating ball is fixedly provided with a stirring tube located in the heating ball, and the upper end of the stirring tube extends upward from the heating ball and is rotatably connected to the heating ball.

[0015] Furthermore, the piston assembly includes a first connecting block arranged at the upper end of the stirring tube, the upper end of the first connecting block is provided with a first inclined surface, a second connecting block is provided in the cover plate directly above the first connecting block, the lower end of the second connecting block is provided with a second inclined surface matching the first inclined surface, a first piston hole with a lower end opening is provided in the second connecting block, a first piston column extending upward into the first piston hole is provided at the upper end of the first connecting block, the first connecting block is pressed toward the lower end of the second connecting block under the action of a first spring, and when the shaft rod drives the first connecting block to rotate, under the interaction of the first inclined surface and the second inclined surface, the first connecting block drives the first piston column to make up and down reciprocating motion in the first piston hole; A first chamber is formed in the first piston hole between the upper end of the first piston column and the upper end of the first piston hole, a first through hole for connecting the water bath and the first chamber is provided in the first connecting block and the first piston column, an air hole connected to the first chamber is provided in the second connecting block, a first one-way valve for controlling one-way air intake into the first chamber is provided in the first through hole, and a second one-way valve for controlling exhaust from the first chamber is provided in the air hole; when the first piston column makes an up and down reciprocating motion in the first piston hole, the gas in the water bath is discharged through the first one-way valve, the first chamber, and the second one-way valve, and a vacuum is formed in the water bath; an air pressure valve for controlling the vacuum degree in the water bath is provided on the first cover plate.

[0016] Furthermore, a second chamber is formed in the first convex sleeve between the first piston body and the bottom of the first convex sleeve, and a third one-way valve for controlling the one-way flow of liquid in the water bath to the second chamber is provided in the first convex sleeve. A second through hole for connecting the second chamber and the water bath is provided in the first piston body, the stirring tube and the first connecting block, and a fourth one-way valve for controlling the one-way flow of liquid in the second chamber to the water bath is provided in the second through hole; when the first piston body makes an up and down reciprocating motion in the first convex sleeve, the liquid in the water bath is discharged through the third one-way valve, the second chamber and the fourth one-way valve, and the liquid circulates in the water bath.

[0017] Furthermore, the lower end of the shaft rod is provided with a third connecting block which is vertically and movably connected to the upper end of the cooling cylinder, and the cooling cylinder is provided with a first annular groove on the outer side of the third connecting block, the inlet of the solenoid valve is connected with the second slide tube, and the outlet is connected with the first annular groove through a hose; the lower end of the third connecting block is provided with a cooling tube extending into the cooling cylinder, and the lower end of the cooling tube is rotatably connected to a storage cylinder, and the third connecting block and the cooling tube are provided with a third through hole for connecting the first annular groove and the storage cylinder; the upper end of the storage cylinder is provided with a third slide tube which extends upward and is slidably connected to the cooling cylinder, and the lower end is provided with a fourth slide tube which extends downward and is slidably connected to the cooling cylinder, and the cooling cylinder is provided with a fourth through hole which is connected to the fourth slide tube.

[0018] Furthermore, a second piston hole is provided at the bottom of the cooling cylinder, and a second piston column extending downward into the second piston hole is provided at the bottom of the cooling cylinder, and a second spring for forcing the second piston column to move upward is provided in the second piston hole; a third chamber is formed in the second piston hole between the bottom of the second piston column and the bottom of the second piston hole, and a fifth one-way valve for controlling the one-way flow of liquid in the storage cylinder into the third chamber is provided in the second piston column; a fifth through hole connecting the third chamber and the first annular groove is provided in the cooling cylinder, and a sixth one-way valve for controlling the one-way flow of liquid in the third chamber into the storage cylinder is provided in the fifth through hole; when the second piston column makes an up and down reciprocating motion in the second piston hole, the liquid in the storage cylinder is discharged through the fifth one-way valve, the third chamber, the sixth one-way valve, the first annular groove and the third through hole, and the liquid circulates in the storage cylinder.

[0019] Furthermore, the power assembly includes a first motor, which is fixedly mounted at the bottom of the water bath, and a first bevel gear is provided on the outer side of the shaft, and the first bevel gear is located between the bottom of the water bath and the upper end of the third connecting block, and the first bevel gear is slidably connected to the shaft along the axial direction of the shaft and fixedly connected along the circumference of the shaft; the output shaft of the first motor is fixedly provided with a second bevel gear meshing with the first bevel gear.

[0020] Furthermore, a limiting sliding groove is provided on the side wall of the inner hole of the first bevel gear along the axial direction of the shaft rod, and a limiting sliding block slidably connected in the limiting sliding groove is fixedly provided on the outer side of the shaft rod.

[0021] Beneficial Effects

[0022] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0023] 1. A heating ball is placed in a water bath, and the A2β-casein milk is passed into the heating ball. The hot water in the water bath heats the A2β-casein milk in the heating ball. Since the heating ball is completely immersed in water, the heating area is large, and it is easy to achieve the purpose of rapid heating, so that the A2β-casein in the milk will not be decomposed by bacteria in large quantities.

[0024] 2. A tortuous stirring tube is arranged in the heating ball, and the first inclined surface on the first connecting block and the second inclined surface on the second connecting block cooperate at the upper end of the stirring tube, so that the stirring tube reciprocates up and down when rotating. Due to the first piston body, the first spring, and the second chamber, the water in the water bath enters the stirring tube through the third one-way valve and the fourth one-way valve to increase the temperature of the stirring tube, and then the stirring of the stirring tube is used to achieve the purpose of faster heating of the milk, so that A2β-casein in the milk will not be decomposed by bacteria in large quantities;

[0025] 3. By placing the first piston column, the first piston hole, and the first chamber, the stirring tube moves up and down when the stirring tube rotates and stirs, and then the air above the water surface of the water bath can be extracted under the action of the first one-way valve and the second one-way valve, thereby reducing the air pressure in the water bath to form a vacuum. The air pressure can be controlled to maintain a set value through the air pressure valve, thereby reducing the boiling point of the water in the water bath, so that when the water in the water bath is heated to boiling, the temperature will be stably maintained at the temperature required for pasteurization, which can achieve the purpose of stabilizing the heating temperature and ensure that A2β-casein in milk will not be lost;

[0026] 4. By arranging a storage cylinder in the cooling cylinder, when the cooling tube reciprocates up and down, the storage cylinder will be driven to move with it. Due to the third chamber below the storage cylinder and the bottom of the cooling cylinder, and under the action of the fifth one-way valve and the sixth one-way valve, the milk that flows into the storage cylinder through the cooling tube flows into the cooling tube again and mixes with the milk that has just entered the cooling tube and has not been cooled. After rapid cooling, it flows through the cooling tube again and is cooled again, thereby achieving the purpose of rapid cooling, effectively inhibiting bacterial reproduction, and ensuring that A2β-casein in the milk will not be lost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a cross-sectional view of the present invention;

[0028] Figure 2 For the present invention Figure 1 The enlarged image at point I in the middle;

[0029] Figure 3 For the present invention Figure 1 Enlarged view of II in the middle;

[0030] Figure 4 For the present invention Figure 1 Enlarged view of point III in the middle;

[0031] Figure 5 For the present invention Figure 1 Enlarged view of point IV in the middle. DETAILED DESCRIPTION

[0032] See also Figure 1-5 As shown, a method for preparing A2β-casein children's milk comprises the following steps:

[0033] Step 1: squeeze the milk containing A2β-casein into a milk tank and cool it to prevent the growth of microorganisms;

[0034] Step 2: Inspect the milk and filter the disease-free milk to remove impurities in the milk;

[0035] Step 3, add a proper amount of water into the water bath 1 disposed on the frame 6a, and make the water level higher than the heating ball 2, then add the ice-water mixture into the cooling cylinder 6 disposed in the frame 6a, start the heating plate 8 to heat the water in the water bath 1, and at the same time control the power component to drive the stirring tube 31 located in the heating ball 2 to rotate, and the piston component to work to control the air pressure in the water bath 1 at a set value, so that the boiling point of the water is reduced to the temperature required for pasteurization, and the heating plate 8 heats the water to boiling;

[0036] Step 4, control the solenoid valve 23 to be closed, and introduce milk into the heating ball 2 so that the milk is heated in the heating ball 2. When the temperature of the milk is heated to the same temperature as the water, maintain it for 30 minutes;

[0037] Step 5, control the solenoid valve 23 to open, press the milk in the heating ball 2 into the cooling pipe in the cooling cylinder 6 to cool the milk, and make the milk flow into the storage cylinder 51 to cool, so as to inhibit the growth of bacteria;

[0038] Step 6: After the A2β-casein children's milk is sterilized, the milk is filled and sealed by a filling machine, and then manually packed to complete the production of A2β-casein children's milk.

[0039] The water bath tube 1 is fixedly arranged at the upper end of the frame 6a, and a heating plate 8 is arranged at the bottom of the water bath tube 1. The cooling tube 6 is fixedly arranged in the frame 6a and is located directly below the water bath tube 1. The side wall of the cooling tube 6 is provided with a lower through hole 62 and an upper through hole 61 which are connected to the cooling tube 6; the bottom of the water bath tube 1 is movably connected with an axis rod 3a arranged in the vertical direction, and a first convex sleeve 1a is arranged at the bottom of the water bath tube 1. The upper end of the axis rod 3a is provided with a first piston body 37 located in the first convex sleeve 1a, and a first spring 71 for forcing the first piston body 37 to move upward is arranged in the first convex sleeve 1a. The heating ball 2 is rotatably connected to the first convex sleeve 1a. The upper end of the piston body 37 is located in the water bath tube 1; a cover plate 11a is fixedly provided on the upper end of the water bath tube 1, and a first inlet 11b and a plugging cover 11 covering the first inlet 11b are provided on the cover plate 11a; the heating ball 2 is provided with a first sliding tube 21 extending upward and slidingly connected in the cover plate 11a, and a second sliding tube 22 extending downward and slidingly connected to the bottom of the water bath tube 1, and a solenoid valve 23 is provided at the lower end of the second sliding tube 22; a stirring tube 31 located in the heating ball 2 is fixedly provided at one end of the first piston body 37 extending into the heating ball 2, and the upper end of the stirring tube 31 extends upward from the heating ball 2 and is rotatably connected to the heating ball 2.

[0040] The piston assembly includes a first connecting block 3c arranged at the upper end of the stirring tube 31, and a first inclined surface 313 is provided at the upper end of the first connecting block 3c. A second connecting block 11c is provided in the cover plate 11a just above the first connecting block 3c, and a second inclined surface 14 cooperating with the first inclined surface 313 is provided at the lower end of the second connecting block 11c. A first piston hole 11d with a lower end opening is provided in the second connecting block 11c, and a first piston column 34 extending upward into the first piston hole 11d is provided at the upper end of the first connecting block 3c. The first connecting block 3c is pressed toward the lower end of the second connecting block 11c under the action of the first spring 71. When the shaft rod 3a drives the first connecting block 3c to rotate, under the interaction of the first inclined surface 313 and the second inclined surface 14, the first connecting block 3c drives the first piston column 34 to reciprocate up and down in the first piston hole 11d. Movement; a first chamber is formed in the first piston hole 11d between the upper end of the first piston column 34 and the upper end of the first piston hole 11d, a first through hole 311 for connecting the water bath tube 1 and the first chamber is provided in the first connecting block 3c and the first piston column 34, an air hole 11e connected to the first chamber is provided in the second connecting block 11c, a first one-way valve 33 for controlling one-way air intake into the first chamber is provided in the first through hole 311, and a second one-way valve 13 for controlling exhaust from the first chamber to the outside is provided in the air hole 11e; when the first piston column 34 reciprocates up and down in the first piston hole 11d, the gas in the water bath tube 1 is discharged through the first one-way valve 33, the first chamber, and the second one-way valve 13, and a vacuum is formed in the water bath tube 1; an air pressure valve 12 for controlling the vacuum degree in the water bath tube 1 is provided on the first cover plate 11a.

[0041] A second chamber 1b is formed in the first convex sleeve 1a between the first piston body 37 and the bottom of the first convex sleeve 1a, and a third one-way valve 15 is provided in the first convex sleeve 1a for controlling the one-way flow of liquid in the water bath 1 to the second chamber 1b. A second through hole 312 for connecting the second chamber 1b and the water bath 1 is provided in the first piston body 37, the stirring tube 31, and the first connecting block 3c, and a fourth one-way valve 35 for controlling the one-way flow of liquid in the second chamber 1b to the water bath 1 is provided in the second through hole 312; when the first piston body 37 reciprocates up and down in the first convex sleeve 1a, the liquid in the water bath 1 is discharged through the third one-way valve 15, the second chamber 1b, and the fourth one-way valve 35, and the liquid circulates in the water bath 1.

[0042] The lower end of the shaft rod 3a is provided with a third connecting block 3e which is vertically and downwardly movably connected to the upper end of the cooling cylinder 6. The cooling cylinder 6 is provided with a first annular groove 65 on the outer side of the third connecting block 3e. The inlet of the solenoid valve 23 is connected with the second slide pipe 22, and the outlet is connected with the first annular groove 65 through the hose 24. The lower end of the third connecting block 3e is provided with a cooling pipe 32 extending into the cooling cylinder 6. The lower end of the cooling pipe 32 is rotatably connected with a storage cylinder 51. The third connecting block 3e and the cooling pipe 32 are provided with a third through hole 36 for connecting the first annular groove 65 and the storage cylinder 51. The upper end of the storage cylinder 51 is provided with a third slide pipe 511 which extends upward and is slidably connected to the cooling cylinder 6, and the lower end is provided with a fourth slide pipe 512 which extends downward and is slidably connected to the cooling cylinder 6. The cooling cylinder 6 is provided with a fourth through hole 64 which is connected with the fourth slide pipe 512.

[0043] The bottom of the cooling cylinder 6 is provided with a second piston hole 6f, the bottom of the cooling cylinder 6 is provided with a second piston column 52 extending downward into the second piston hole 6f, the second piston hole 6f is provided with a second spring 72 for forcing the second piston column 52 to move upward; the second piston hole 6f forms a third chamber 67 between the bottom of the second piston column 52 and the bottom of the second piston hole 6f, the second piston column 52 is provided with a spring for controlling the unidirectional flow of the liquid in the storage cylinder 51 into the third chamber 67 The cooling cylinder 6 is provided with a fifth through hole 63 which connects the third chamber 67 and the first annular groove 65, and the fifth through hole 63 is provided with a sixth one-way valve 66 which is used to control the one-way flow of the liquid in the third chamber 67 to the storage cylinder 51; when the second piston column 52 reciprocates up and down in the second piston hole 6f, the liquid in the storage cylinder 51 is discharged through the fifth one-way valve 53, the third chamber 67, the sixth one-way valve 66, the first annular groove 65 and the third through hole 36, and the liquid circulates in the storage cylinder 51.

[0044] The power assembly includes a first motor 41, which is fixedly mounted at the bottom of the water bath 1. A first bevel gear 43 is provided on the outer side of the shaft 3a. The first bevel gear 43 is located between the bottom of the water bath 1 and the upper end of the third connecting block 3e. The first bevel gear 43 is slidably connected to the shaft 3a along the axial direction of the shaft 3a and is fixedly connected along the circumferential direction of the shaft 3a. The output shaft of the first motor 41 is fixedly provided with a second bevel gear 42 meshing with the first bevel gear 43. The inner hole side wall of the first bevel gear 43 is provided with a limiting slide groove 3b along the axial direction of the shaft 3a, and a limiting slider 4a slidably connected in the limiting slide groove 3b is fixedly provided on the outer side of the shaft 3a.

[0045] In the above step 3 of the present embodiment, when preparing for pasteurization, first open the plug cover 11, add a proper amount of water into the water bath 1 through the first inlet 11b, so that the water level is higher than the heating ball 2, then add the ice-water mixture into the cooling tube 6, and at the same time continuously introduce cold water into the lower through hole 62, and the cold water flows out through the upper through hole 61 to form a cycle, start the heating plate 8 to heat the water in the water bath 1, and at the same time start the first motor 41 to drive the second bevel gear 42 to rotate. Since the second bevel gear 42 is meshed with the first bevel gear 43, and the first bevel gear 43 and the shaft rod 3a cooperate with the limiting protrusion and the limiting slide groove 3b, the shaft rod 3a is driven to rotate, and the shaft rod 3a drives the first piston body 37, the stirring tube 31, the first connecting block 3c, the third connecting block 3e, the cooling tube 3 2 rotates, due to the cooperation between the first inclined surface 313 on the first connecting block 3c and the second inclined surface 14 on the second connecting block 11c, and under the action of the first spring 71 and the second spring 72, the stirring tube 31 and the cooling tube 32 are driven to reciprocate up and down, so that the first piston rod 34 moves back and forth in the first piston hole 11d, and the air on the liquid surface of the water bath 1 can be discharged through the first through hole 311, the first one-way valve 33, the first chamber, the air hole 11e, and the second one-way valve 13 through the action of the first one-way valve 33 and the second one-way valve 13, so that the air pressure in the water bath 1 drops to form a vacuum, and the water pressure in the water bath 1 is controlled at a set value through the air pressure valve 12, so that the boiling point of water is reduced to the temperature required for pasteurization. When the heating plate 8 heats the water to boiling, the preparation work is completed.

[0046] In the above step 4 of the present embodiment, when the milk is heated quickly, after the water in the water bath 1 boils, the solenoid valve 23 is controlled to be closed, and the milk is introduced into the heating ball 2 through the first slide pipe 21, so that the milk is heated in the heating ball 2. At this time, the stirring tube 31 rotates continuously, and the milk entering the heating ball 2 is stirred. Since the shaft 3a continuously reciprocates up and down, the first piston block at the lower end of the stirring tube 31 reciprocates in the first convex sleeve 1a, and then through the action of the third one-way valve 15 and the fourth one-way valve 35, the water in the water bath 1 can be discharged into the water bath 1 through the third one-way valve 15, the second chamber 1b, the second through hole 312, and the fourth one-way valve 35, so that the stirring tube 31 is heated, and the heating speed of the milk is accelerated. When the temperature of the milk is heated to the same temperature as that of the water, it is maintained for 30 minutes to complete the rapid heating.

[0047] In the above step 5 of the present embodiment, when the milk is cooled quickly, after the milk is quickly heated and sterilized, the solenoid valve 23 is controlled to open, and sterile air is introduced into the first slide tube 21, so that the milk in the heating ball 2 is pressed into the hose 24 through the second slide tube 22 and the solenoid valve 23, and enters the cooling tube 32 through the third through hole 36 through the first annular groove 65. As the first motor 41 rotates continuously, the cooling tube 32 is driven to rotate in the ice water in the cooling tube 6, so as to cool the milk and make the milk flow into the storage tube 51. The air in the storage tube 51 is moved by the third slide tube 22 and the solenoid valve 23. The milk is discharged from the tube 511, and at the same time, the shaft 3a drives the cooling tube 32 to reciprocate up and down, and then drives the storage cylinder 51 to reciprocate up and down through the cooling tube 32, and drives the second piston column 52 to reciprocate in the second piston hole 6f. Under the action of the fifth one-way valve 53 and the sixth one-way valve 66, the cooled milk in the storage cylinder 51 can be sucked out and flowed into the first annular groove 65 to mix with the uncooled milk, and then quickly cooled down and cooled again through the cooling tube 32, so as to achieve the effect of rapid cooling and inhibiting bacterial reproduction, and complete the steps and complete the sterilization.

[0048] In the above steps of this embodiment, when the milk is being filled and sealed, it passes through the filling machine through the fourth through hole 64 .

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for preparing A2β-casein children's milk, characterized in that: The following steps are involved: Step 1: squeeze the milk containing A2β-casein into a milk tank and cool it to prevent the growth of microorganisms; Step 2: Inspect the milk and filter the disease-free milk to remove impurities in the milk; Step 3, add an appropriate amount of water into the water bath set on the frame, and make the water level higher than the heating ball, then add the ice-water mixture into the cooling cylinder set in the frame, start the heating plate to heat the water in the water bath, and at the same time control the power component to drive the stirring tube located in the heating ball to rotate, and the piston component to work to control the air pressure in the water bath at a set value, so that the boiling point of the water is reduced to the temperature required for pasteurization, and the heating plate heats the water to boiling; Step 4, control the solenoid valve to close, and introduce milk into the heating ball to heat the milk in the heating ball. When the temperature of the milk is heated to the same temperature as the water, maintain it for 30 minutes; Step 5, control the solenoid valve to open, press the milk in the heating ball into the cooling pipe in the cooling cylinder to cool the milk, and make the milk flow into the storage cylinder for cooling, so as to inhibit the growth of bacteria; Step 6: After the A2β-casein children's milk is sterilized, the milk is filled and sealed by a filling machine, and then manually packed to complete the production of the A2β-casein children's milk; The water bath is fixedly arranged at the upper end of the frame, a heating plate is arranged at the bottom of the water bath, the cooling tube is fixedly arranged in the frame and is located directly below the water bath, and the side wall of the cooling tube is provided with a lower through hole and an upper through hole connected to the cooling tube; the bottom of the water bath is movably connected with a shaft arranged in the vertical direction, the bottom of the water bath is provided with a first convex sleeve, the upper end of the shaft is provided with a first piston body located in the first convex sleeve, the first convex sleeve is provided with a first spring for forcing the first piston body to move upward, the heating ball is rotatably connected to the upper end of the first piston body and is located in the water bath; the upper end of the water bath is fixedly provided with a cover plate, the cover plate is provided with a first inlet, and a plugging cover covering the first inlet; the heating ball is provided with a first sliding tube extending upward and slidably connected to the cover plate, and a second sliding tube extending downward and slidably connected to the bottom of the water bath, and the lower end of the second sliding tube is provided with an electromagnetic valve; one end of the first piston body extending into the heating ball is fixedly provided with a stirring tube located in the heating ball, and the upper end of the stirring tube extends upward from the heating ball and is rotatably connected to the heating ball; The piston assembly includes a first connecting block arranged at the upper end of the stirring tube, the upper end of the first connecting block is provided with a first inclined surface, a second connecting block is provided in the cover plate directly above the first connecting block, the lower end of the second connecting block is provided with a second inclined surface matching the first inclined surface, a first piston hole with a lower end opening is provided in the second connecting block, a first piston column extending upward into the first piston hole is provided at the upper end of the first connecting block, the first connecting block is pressed toward the lower end of the second connecting block under the action of a first spring, and when the shaft rod drives the first connecting block to rotate, under the interaction of the first inclined surface and the second inclined surface, the first connecting block drives the first piston column to make up and down reciprocating motion in the first piston hole; A first chamber is formed in the first piston hole between the upper end of the first piston column and the upper end of the first piston hole, a first through hole for connecting the water bath and the first chamber is provided in the first connecting block and the first piston column, an air hole connected to the first chamber is provided in the second connecting block, a first one-way valve for controlling one-way air intake into the first chamber is provided in the first through hole, and a second one-way valve for controlling exhaust from the first chamber to the outside is provided in the air hole; when the first piston column reciprocates up and down in the first piston hole, the gas in the water bath is discharged through the first one-way valve, the first chamber and the second one-way valve, and a vacuum is formed in the water bath; an air pressure valve for controlling the vacuum degree in the water bath is provided on the cover plate; A second chamber is formed in the first convex sleeve between the first piston body and the bottom of the first convex sleeve, a third one-way valve for controlling the one-way flow of liquid in the water bath to the second chamber is provided in the first convex sleeve, a second through hole for connecting the second chamber and the water bath is provided in the first piston body, the stirring tube and the first connecting block, a fourth one-way valve for controlling the one-way flow of liquid in the second chamber to the water bath is provided in the second through hole; when the first piston body reciprocates up and down in the first convex sleeve, the liquid in the water bath is discharged through the third one-way valve, the second chamber and the fourth one-way valve, and the liquid circulates in the water bath.

2. The method for preparing A2β-casein children's milk according to claim 1, characterized in that: The lower end of the shaft rod is provided with a third connecting block which is vertically and downwardly movably connected to the upper end of the cooling cylinder, and the cooling cylinder is provided with a first annular groove on the outer side of the third connecting block, the inlet of the solenoid valve is connected with the second slide tube, and the outlet is connected with the first annular groove through a hose; the lower end of the third connecting block is provided with a cooling tube extending into the cooling cylinder, and the lower end of the cooling tube is rotatably connected to a storage cylinder, and the third connecting block and the cooling tube are provided with a third through hole for connecting the first annular groove and the storage cylinder; the upper end of the storage cylinder is provided with a third slide tube which extends upward and is slidably connected to the cooling cylinder, and the lower end is provided with a fourth slide tube which extends downward and is slidably connected to the cooling cylinder, and the cooling cylinder is provided with a fourth through hole which is connected to the fourth slide tube.

3. The method for preparing A2β-casein children's milk according to claim 2, characterized in that: A second piston hole is provided at the bottom of the cooling cylinder, and a second piston column extending downward into the second piston hole is provided at the bottom of the cooling cylinder, and a second spring for forcing the second piston column to move upward is provided in the second piston hole and below the second piston column; a third chamber is formed in the second piston hole between below the second piston column and the bottom of the second piston hole, and a fifth one-way valve for controlling the one-way flow of liquid in the storage cylinder into the third chamber is provided in the second piston column; a fifth through hole connecting the third chamber and the first annular groove is provided in the cooling cylinder, and a sixth one-way valve for controlling the one-way flow of liquid in the third chamber into the storage cylinder is provided in the fifth through hole; when the second piston column makes an up-and-down reciprocating motion in the second piston hole, the liquid in the storage cylinder is discharged through the fifth one-way valve, the third chamber, the sixth one-way valve, the first annular groove and the third through hole, and the liquid circulates in the storage cylinder.

4. The method for preparing A2β-casein children's milk according to claim 3, characterized in that: The power assembly includes a first motor, which is fixedly mounted at the bottom of the water bath, and a first bevel gear is provided on the outer side of the shaft, and the first bevel gear is located between the bottom of the water bath and the upper end of the third connecting block, and the first bevel gear is slidably connected to the shaft along the axial direction of the shaft and fixedly connected along the circumference of the shaft; the output shaft of the first motor is fixedly provided with a second bevel gear meshing with the first bevel gear.

5. The method for preparing A2β-casein children's milk according to claim 4, characterized in that: A limiting sliding groove is provided on the inner hole side wall of the first bevel gear along the axial direction of the shaft rod, and a limiting sliding block slidably connected in the limiting sliding groove is fixedly provided on the outer side of the shaft rod.

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