CN112273437A

CN112273437A - Method for preparing composite milk powder

Info

Publication number: CN112273437A
Application number: CN202011225564.7A
Authority: CN
Inventors: 刘华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-01-29

Abstract

The invention discloses a method for preparing compound milk powder, S1, filtering and sterilizing raw milk, adding different materials, fully mixing the raw milk with different materials, and storing the mixture in a temporary storage tank in a first support for later use; s2, feeding the raw milk in the temporary storage tank into the sterilization tank, and heating the raw milk in the sterilization tank through a circulating energy-saving heating mechanism to eliminate harmful bacteria in the raw milk; the circulating energy-saving heating device is scientific and reasonable in structure, safe and convenient to use, provided with the circulating energy-saving heating mechanism, capable of generating steam through evaporation of the two evaporation tanks, and then through the matching of the hot air pipe, the compression pipe and the sterilization heating pipe, the steam is heated and then sent into the ascending air box at the bottom end of the sterilization tank, so that the steam enters the ascending air box at the top end of the sterilization tank along the ascending air pipe, the raw milk in the sterilization tank is heated from bottom to top, and then is discharged into the liquefaction box through the first exhaust pipe.

Description

Method for preparing composite milk powder

Technical Field

The invention relates to the technical field of milk powder production, in particular to a production method of composite milk powder.

Background

The milk powder is powder prepared by removing water from animal milk, and is suitable for storage, wherein the milk powder is prepared by taking fresh milk or goat milk as a raw material, removing almost all water in the milk by a freezing or heating method, drying and adding a proper amount of vitamins, minerals and the like to prepare reconstituted food, and the milk powder is required to be concentrated and sterilized by a sterilizing tank and a concentrating tank in the production process, so that harmful bacteria and water in the raw milk are reduced, and the quality of the subsequent milk powder production is ensured;

however, in the existing sterilization tank and concentration tank, the raw milk is heated only from a single direction in the process of concentration and sterilization, so that the heating degree of the raw milk at the top and the bottom of the inner wall of the sterilization tank is inconsistent, and the raw milk is heated unevenly.

Disclosure of Invention

The invention provides a method for preparing compound milk powder, which can effectively solve the problems that the original milk is heated only from a single direction in the process of concentration and sterilization, so that the heating degrees of the original milk at the top and the bottom of the inner wall of a sterilization tank are different, the original milk is heated unevenly, and meanwhile, when in heating, the waste heat is not reasonably utilized to improve the heating effect, the energy consumption is reduced, part of energy is wasted, and the cost is increased to cause loss.

In order to achieve the purpose, the invention provides the following technical scheme: a method for preparing compound milk powder comprises the following steps:

s1, filtering and sterilizing the raw milk, adding different materials, fully mixing the materials with the raw milk, and storing the mixture in a temporary storage tank in the first support for later use;

s2, feeding the raw milk in the temporary storage tank into the sterilization tank, evaporating the raw milk by a circulating energy-saving heating mechanism to generate steam, and heating the raw milk in the sterilization tank from bottom to top by the cooperation of an ascending air box and an ascending air pipe;

s3, enabling outside air to pass through the evaporation tank through the air box, absorbing heat inside the evaporation tank, and heating the raw milk inside the sterilization tank through evaporation from top to bottom through the cooperation of the descending air box and the descending air pipe;

s4, when steam enters the ascending air box and the descending air box, the air blowing plate drives the stirring rod to stir the raw milk in the sterilization tank, so that the raw milk is heated more uniformly;

s5, feeding the sterilized raw milk into a concentration tank, continuously feeding the heated steam into the concentration tank through a concentration heating pipe, and heating the raw milk in the concentration tank to concentrate and sterilize the raw milk in the concentration tank;

s6, storing the concentrated milk in a heat-insulating tank, and preserving the heat of the concentrated milk in the heat-insulating tank through a heat-insulating and energy circulation synergistic mechanism to ensure the temperature of the concentrated milk;

s7, spray drying the concentrated milk by spray drying equipment to discharge the water in the concentrated milk to form fine powder;

and S8, drying and cooling the fine powder by a fluidized bed, screening and packaging the fine powder to form a finished product, and inspecting the finished product.

Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use:

1. the circulating energy-saving heating mechanism is arranged, steam is generated by evaporation of two evaporation tanks together, then the steam is heated through the cooperation of the hot air pipe, the compression pipe and the sterilizing heating pipe and then is sent into the ascending air box at the bottom end of the sterilizing tank, the steam enters the ascending air box at the top end of the sterilizing tank along the ascending air pipe, the raw milk in the sterilizing tank is heated from bottom to top and then is discharged into the liquefying box through the first exhaust pipe, in addition, external air is sucked through the air box and is sent into the heat exchange pipe in the first evaporation tank through the air inlet channel to absorb heat, hot air enters the descending air box at the top end of the sterilizing tank through the first exhaust pipe, so that the hot air enters the descending air box at the bottom end of the sterilizing tank along the descending air pipe, the raw milk in the sterilizing tank is heated from top to bottom, the hot air is discharged through the descending air box at the bottom end of the sterilizing tank, the raw milk can be heated more uniformly, and the sterilization efficiency is improved;

in addition, when steam and hot air respectively enter the ascending air box and the descending air box, the air plate is blown to rotate, so that the air plate drives the stirring rod to rotate, the raw milk in the sterilization tank is stirred, the heating effect is further improved, and the quality of subsequent milk powder is further improved.

2. The rotary evaporation mechanism is arranged, raw milk in the liquid storage cavity is sprayed on the evaporation rotating plate through the spraying pipe, the driving gear is driven to rotate through the matching of the driving motor and the rotating rod, the driving gear and the driven gear are driven to be in matched transmission, the rotating block and the evaporation rotating plate are driven to rotate, so that the evaporation rotating plate drives the raw milk to rotate, centrifugal force is generated, the raw milk is evenly spread on the evaporation rotating plate, and meanwhile, the evaporation rotating plate is heated through the matching of the heating cavity and the cavity, so that moisture in the raw milk on the evaporation rotating plate is evaporated;

in addition, through the cooperation of the rotating rod, the transmission shaft and the belt, the rotating shaft drives the scraper to rotate, the original milk on the evaporating rotating plate is scraped, meanwhile, the original milk is conveniently turned, the original milk is heated more uniformly, and the concentrated effect is improved.

3. The heat preservation and energy circulation synergistic mechanism is arranged, and the gas passing through the evaporation tank is sent into the annular coil pipe through the first exhaust pipe, so that the gas absorbing the heat circularly flows in the heat preservation tank through the annular coil pipe, the temperature of the concentrated milk is prevented from being reduced, the concentrated milk is conveniently sprayed and dried subsequently, and the efficiency of powder making is improved;

in addition, the gas after heat exchange is sent to the air return channel through the air guide pipe, when the gas is excessively gathered in the air return channel, the wind shield and the push rod are pushed to move, so that the sealing of the air return channel is removed, the returned gas and the external gas are mixed in the air box, the integral temperature of the gas is improved, the heat waste of the returned gas is avoided, and the utilization effect of waste heat is improved.

4. The liquefaction drainage mechanism has been set up, through first blast pipe and the cooperation of second blast pipe, the liquefaction case is sent into to the steam after the inside heat transfer of jar and the concentrated jar of will disinfecting respectively, steam after the heat transfer is stored, make things convenient for subsequent recovery, avoid causing the waste of resource, steam liquefies into the water drippage on the fly leaf gradually inside the liquefaction case in addition, rethread circular recess flows into the liquefaction bottom of the case portion, thereby promote the fly leaf and rise, make fly leaf area slide rise along the spout, make cock board and drain tank separation, the sealing to the drain tank has been removed, send water into inside the second evaporating pot through the drain pipe, it is too much to avoid the inside liquid storage of liquefaction case, influence subsequent collection.

5. The preheating and liquid reflux mechanism is arranged, and liquid absorbing heat from the inside of the evaporation tank is conveyed to the inside of the spiral flow groove through the hot water pipe, so that hot water surrounds the temporary storage tank along the spiral flow groove, and the raw milk in the temporary storage tank is preheated, so that the subsequent sterilization effect on the raw milk is facilitated, and the sterilization efficiency is increased;

then, send into the inside storage of flow distribution box through the connecting pipe with liquid, and send back inside two evaporating pots through the back flow, cooperation through supporting spring and closing plate, make liquid flow to an evaporating pot inside earlier, after the inside liquid of first evaporating pot was filled up, it rises to drive the floater, make the floater seal up inhalant canal, and then flow distribution box internal pressure increases gradually, promote the supporting spring shrink, it slides to drive the closing plate, make liquid flow into another back flow, to the inside injected liquid of second evaporating pot, to second evaporating pot injected liquid under the prerequisite of guaranteeing that first evaporating pot liquid is sufficient, prevent that the inside liquid of first evaporating pot is not enough to influence heating effect.

To sum up, through the cooperation of energy-conserving heating mechanism of circulation and rotatory evaporation mechanism, the reasonable energy of utilization disinfects, concentrate to former milk to make the even being heated of former milk, improve the concentration and the quality of former milk, carry out the reutilization through keeping warm and energy circulation increase mechanism and preheating and liquid backflow mechanism to gas and liquid after two evaporating pots endotherm simultaneously, furthest has utilized the energy, has improved the heating effect to former milk, has guaranteed the quality of follow-up milk powder, makes the device energy-concerving and environment-protective more, the cost is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a flow chart of a manufacturing method of the milk powder of the present invention;

FIG. 2 is a schematic structural diagram of a circulating energy-saving heating mechanism of the invention;

FIG. 3 is a schematic view of the installation structure of the sterilization tank of the present invention;

FIG. 4 is a schematic view of the drop air box mounting structure of the present invention;

FIG. 5 is a schematic view of the installation structure of the area A in FIG. 2 according to the present invention;

FIG. 6 is a schematic view of the mounting structure of the flow divider box of the present invention;

FIG. 7 is a schematic view of the installation structure of the floating ball of the present invention;

FIG. 8 is a schematic view of the mounting structure of the damper of the present invention;

FIG. 9 is a schematic view of the mounting structure of the support spring of the present invention;

FIG. 10 is a schematic view of the mounting structure of the screed of the present invention;

FIG. 11 is a schematic view of the mounting arrangement for a looped coil according to the present invention;

FIG. 12 is a schematic view of the mounting structure of the push rod of the present invention;

fig. 13 is a schematic view of the mounting structure of the movable plate of the present invention.

Reference numbers in the figures: 1. a first bracket; 2. a support block; 3. a temporary storage tank; 4. sterilizing the tank; 5. a base plate; 6. a second bracket; 7. a concentration tank;

8. a circulating energy-saving heating mechanism; 801. a fixed seat; 802. an evaporator tank; 803. an evaporation chamber; 804. a heating chamber; 805. a heat exchange pipe; 806. an air inlet channel; 807. an air box; 808. a hot gas pipe; 809. a concentration heating pipe; 810. a second exhaust pipe; 811. an air lifting box; 812. an air rising pipe; 813. a compressor; 814. a descending gas box; 815. descending the trachea; 816. a wind plate; 817. a stirring rod; 818. a first exhaust duct; 819. a sterilizing heating pipe; 820. a first exhaust pipe;

9. a liquefaction drainage mechanism; 901. a liquefaction tank; 902. a chute; 903. a card slot; 904. a clamping block; 905. a slide plate; 906. a plug plate; 907. a water discharge tank; 908. a drain pipe; 909. a movable plate; 910. a circular groove;

10. a rotary evaporation mechanism; 1001. a reservoir chamber; 1002. a concentration chamber; 1003. rotating the block; 1004. evaporating and rotating the plate; 1005. a cavity; 1006. a heat exchange chamber; 1007. a material spraying pipe; 1008. a drive motor; 1009. rotating the rod; 1010. a drive shaft; 1011. a belt; 1012. a rotating shaft; 1013. a squeegee; 1014. a driven gear; 1015. a driving gear;

11. a heat preservation and energy circulation synergistic mechanism; 1101. placing the plate; 1102. a heat preservation tank; 1103. extracting a pipe; 1104. a water pump; 1105. a looped coil; 1106. a second exhaust duct; 1107. a bleed pipe; 1108. a gas return channel; 1109. a connecting plate; 1110. a push rod; 1111. a wind deflector; 1112. a stopper; 1113. tensioning the spring;

12. a preheating and liquid reflux mechanism; 1201. a hot water pipe; 1202. a spiral flow channel; 1203. a connecting pipe; 1204. a shunt box; 1205. a return pipe; 1206. a water inlet channel; 1207. a floating ball; 1208. a groove; 1209. a support spring; 1210. and (7) sealing the plate.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b): as shown in figure 1, the invention provides a technical scheme, and a preparation method of compound milk powder, which comprises the following steps:

s1, filtering and sterilizing the raw milk, adding different materials, fully mixing the materials with the raw milk, and storing the mixture in a temporary storage tank 3 in the first support 1 for later use;

s2, feeding the raw milk in the temporary storage tank 3 into the sterilization tank 4, evaporating the raw milk by the circulating energy-saving heating mechanism 8 to generate steam, and heating the raw milk in the sterilization tank 4 from bottom to top by the cooperation of the ascending air box 811 and the ascending air pipe 812;

s3, enabling outside air to pass through the evaporation tank 802 through the air bellow 807, absorbing heat inside the evaporation tank 802, and heating the raw milk inside the sterilization tank 4 by evaporation from top to bottom through the cooperation of the descending air box 814 and the descending air pipe 815;

s4, when steam enters the rising air box 811 and the falling air box 814, the blowing air plate 816 drives the stirring rod 817 to stir the raw milk in the sterilization tank 4, so that the raw milk is heated more uniformly;

s5, feeding the sterilized raw milk into the concentration tank 7, continuously feeding the heated steam into the concentration tank 7 through the concentration heating pipe 809, and heating the raw milk in the concentration tank 7 to concentrate and sterilize the raw milk in the concentration tank 7;

s6, storing the concentrated thick milk in the heat-preservation tank 1102, and preserving the heat of the thick milk in the heat-preservation tank 1102 through the heat-preservation and energy circulation synergistic mechanism 11 to ensure the temperature of the thick milk;

As shown in fig. 2 to 13, a circulating energy-saving heating mechanism 8 is fixedly connected to the top end of the bottom plate 5, and the circulating energy-saving heating mechanism 8 includes a fixing seat 801, an evaporation tank 802, an evaporation chamber 803, a heating chamber 804, a heat exchange tube 805, an air intake channel 806, an air box 807, a hot air tube 808, a concentrated heating tube 809, a second exhaust tube 810, an upper air box 811, an upper air tube 812, a compressor 813, a lower air box 814, a lower air tube 815, an air plate 816, a stirring rod 817, a first exhaust tube 818, a sterilizing heating tube 819 and a first exhaust tube 820;

the top ends of the bottom plates 5 are symmetrically and fixedly connected with fixing seats 801, the top ends of the two fixing seats 801 are both fixedly connected with evaporating pots 802, an evaporating chamber 803 is arranged inside the evaporating pots 802, a heating chamber 804 is arranged in the evaporating pot 802 corresponding to the outer side of the evaporating chamber 803, a heat exchange tube 805 is uniformly and fixedly connected at the central position in the evaporating chamber 803, an air inlet channel 806 is fixedly connected at one end of one evaporating pot 802, an air box 807 is fixedly connected at the other end of the air inlet channel 806, a compressor 813 is fixedly connected at the top end of the bottom plate 5 corresponding to the position between the two evaporating pots 802, a hot air pipe 808 is symmetrically and fixedly connected at one end of the compressor 813, the two hot air pipes 808 are respectively and fixedly connected with the top ends of the two evaporating pots 802, the other end of the compressor 813 is fixedly connected with a concentration heating pipe 809, the other end of the concentration heating pipe 809 is fixedly connected with one end of the concentration tank 7, and one end of the concentration tank 7 is fixedly connected with a second exhaust pipe 810;

the other end of the compressor 813 is fixedly connected with a sterilizing heating pipe 819 corresponding to the top of the concentrating heating pipe 809, the other end of the sterilizing heating pipe 819 is fixedly connected with an ascending gas box 811, the top end of the ascending gas box 811 is fixedly connected with the bottom end of the sterilizing tank 4, the bottom end and the top end of the sterilizing tank 4 are both fixedly connected with the ascending gas box 811, the outer end of the ascending gas box 811 positioned at the top end of the sterilizing tank 4 is fixedly connected with a first exhaust pipe 820, the adjacent ends of the two ascending gas boxes 811 are both fixedly connected with an ascending gas pipe 812 at equal intervals, the opposite ends of the two ascending gas boxes 811 are both fixedly connected with a descending gas box 814, the adjacent ends of the two descending gas boxes 814 are both fixedly connected with a descending gas pipe 815 at equal intervals, the ascending gas pipe 812 and the descending gas pipe 815 penetrate through the sterilizing tank 4, the central positions inside the ascending gas box, the stirring rod 817 penetrates through the sterilization tank 4 and is fixedly connected with the air plate 816, one end of the evaporation tank 802 is fixedly connected with a first exhaust pipe 818 at the position corresponding to the heat exchange pipe 805, and the other end of the first exhaust pipe 818 is fixedly connected with a descending air box 814 at the top end of the sterilization tank 4; in order to heat the sterilization tank 4 and the concentration tank 7 conveniently, the evaporation chamber 803 is filled with cold liquid, a heating coil is arranged in the heating chamber 804, the input end of the heating coil is electrically connected with the output end of an external power supply, the input end of the bellows 807 is electrically connected with the output end of the external power supply, the heat exchange tube 805 penetrates through the evaporation tank 802 and is communicated with the inside of the air inlet channel 806, the inner wall of the sterilization tank 4 is provided with a vacuum layer, and the rotation directions of the air plate 816 in the upper air lifting box 811 are the same as the rotation directions of the air plate 816 in the lower air lifting;

the device comprises a first support 1, supporting blocks 2 are equidistantly welded in the first support 1, a temporary storage tank 3 is fixedly connected to one side position inside the first support 1 through the supporting blocks 2, a sterilization tank 4 is fixedly connected to the other side position inside the first support 1 through the supporting blocks 2, a bottom plate 5 is fixedly connected to the bottom position corresponding to the sterilization tank 4 inside the first support 1, a second support 6 is fixedly connected to one end of the first support 1, a concentration tank 7 is fixedly connected to the inside of the second support 6, a rotary evaporation mechanism 10 is embedded in the concentration tank 7 and installed in the concentration tank 7, the rotary evaporation mechanism 10 comprises a liquid storage chamber 1001, a concentration chamber 1002, a rotating block 1003, an evaporation rotating plate 1004, a cavity 1005, a heat exchange chamber 1006, a spray pipe 1007, a driving motor 1008, a rotating rod 1009, a transmission shaft 1010, a belt 1011, a rotating;

a liquid storage chamber 1001 is arranged in the concentration tank 7, a concentration chamber 1002 is arranged in the concentration tank 7 corresponding to the bottom of the liquid storage chamber 1001, a rotating block 1003 is rotatably connected to the inner wall of the concentration chamber 1002, an evaporation rotating plate 1004 is fixedly connected to one end of the rotating block 1003 corresponding to the inner position of the concentration chamber 1002, a cavity 1005 is arranged between the inner wall of the concentration chamber 1002 and the evaporation rotating plate 1004, a heat exchange chamber 1006 is arranged in the concentration tank 7 corresponding to the evaporation rotating plate 1004, a spraying pipe 1007 is fixedly connected to the bottom end of the liquid storage chamber 1001 corresponding to the side of the evaporation rotating plate 1004, a driving motor 1008 is fixedly connected to the second support 6 corresponding to the side of the concentration tank 7, an output shaft of the driving motor 1008 is connected with a rotating rod 1009, the bottom end of the rotating rod 1009 penetrates through the bottom end of the second support 6, a transmission shaft 1010 is rotatably, the outer ends of the two transmission shafts 1010 are sleeved with belts 1011, the interior of the concentration chamber 1002 is rotatably connected with a rotating shaft 1012 corresponding to the position of the transmission shafts 1010, the outer end of the rotating shaft 1012 is fixedly connected with a scraper 1013 corresponding to the position of the evaporation rotating plate 1004, the other end of the rotating block 1003 is fixedly connected with a driven gear 1014 corresponding to the position of the outer side of the concentration tank 7, the outer end of the rotating rod 1009 is fixedly connected with a driving gear 1015 corresponding to the position of the driven gear 1014, in order to improve the efficiency of raw milk concentration, the evaporation rotating plate 1004 is arranged in a bucket shape, lubricating oil is filled in the cavity 1005, the input end of the driving motor 1008 is electrically connected with the output end of an external power supply, the rotating shaft 1012 penetrates through the concentration tank 7 and is rotatably connected with the top end of the concentration chamber 1002, one end of the scraper 1013 is attached;

one end of the second bracket 6 is fixedly connected with a heat preservation and energy circulation synergistic mechanism 11, and the heat preservation and energy circulation synergistic mechanism 11 comprises a placing plate 1101, a heat preservation tank 1102, an extraction pipe 1103, a water pump 1104, an annular coil 1105, a second exhaust pipe 1106, an air introducing pipe 1107, an air return channel 1108, a connecting plate 1109, a push rod 1110, a wind shield 1111, a stop 1112, a tension spring 1113, a touch switch 1114, a cover plate 1115 and an electric telescopic rod 1116;

a placing plate 1101 is fixedly connected at the bottom position of one end of a second bracket 6, a heat-insulating tank 1102 is fixedly connected at the top end of the placing plate 1101, a draw-out pipe 1103 is fixedly connected at the position of one end of a concentration tank 7 corresponding to the position of the heat-insulating tank 1102, a water pump 1104 is fixedly connected at the position of the inner side of the second bracket 6 corresponding to the side position of the draw-out pipe 1103, an annular coil 1105 is fixedly connected at the inner part of the heat-insulating tank 1102, a second exhaust pipe 1106 is fixedly connected at the position of the outer end of the heat-insulating tank 1102 corresponding to the bottom position of the annular coil 1105, the other end of the second exhaust pipe 1106 is fixedly connected with one end of an evaporation tank 802, a bleed-air pipe 1107 is fixedly connected at the position of the outer end of the heat-insulating tank 1102 corresponding to the top position of the annular coil 1105, the other end of the bleed-air pipe 1107 is, one end of the push rod 1110 is fixedly connected with a wind shield 1111, the other end of the push rod 1110 is fixedly connected with a stop 1112, a tensioning spring 1113 is fixedly connected between the stop 1112 and the connecting plate 1109, in order to facilitate gas to flow back to the inside of the wind box 807, the input end of the water pump 1104 is electrically connected with the output end of an external power supply, and the diameter of the wind shield 1111 is larger than the inner diameter of the air guide pipe 1107;

the liquefaction drainage mechanism 9 is arranged at the position, corresponding to one side of the other evaporation tank 802, of the top end of the bottom plate 5, and the liquefaction drainage mechanism 9 comprises a liquefaction box 901, a sliding groove 902, a clamping groove 903, a clamping block 904, a sliding plate 905, a plug plate 906, a drainage groove 907, a drainage pipe 908 movable plate 909 and a circular groove 910;

a liquefaction tank 901 is fixedly connected at the position of one side of the top end of the bottom plate 5 corresponding to another evaporation tank 802, sliding grooves 1202 are symmetrically formed in the inner wall of the liquefaction tank 901, clamping grooves 903 are symmetrically formed in the inner wall of the sliding grooves 1202, clamping blocks 904 are slidably connected in the two clamping grooves 903, a sliding plate 1205 is fixedly connected at the adjacent end of the two clamping blocks 904, a plug plate 906 is fixedly connected at the bottom end of the sliding plate 1205, a drainage groove 907 is formed at the position of the bottom end of the clamping groove 903 corresponding to, a drain pipe 908 is fixedly connected to one end of the liquefaction tank 901 at a position corresponding to the drain groove 907, a movable plate 1209 is slidably connected to the interior of the liquefaction tank 901 at a position corresponding to the fixture block 904, a circular groove 910 is formed in the center of the movable plate 1209, in order to collect the steam conveniently, the other ends of the first exhaust pipe 820 and the second exhaust pipe 810 are both fixedly connected with one end of the liquefaction tank 901, and the other end of the drain pipe 908 is fixedly connected with one end of the other evaporation tank 802;

one end of the other evaporation tank 802 is fixedly connected with a preheating and liquid backflow mechanism 12, and the preheating and liquid backflow mechanism 12 comprises a hot water pipe 1201, a spiral flow groove 1202, a connecting pipe 1203, a flow dividing box 1204, a backflow pipe 1205, a water inlet channel 1206, a floating ball 1207, a groove 1208, a supporting spring 1209 and a sealing plate 1210;

a hot water pipe 1201 is fixedly connected with the other end of the other evaporation tank 802, one end of the hot water pipe 1201 is fixedly connected with one end of the temporary storage tank 3, a spiral flow groove 1202 is arranged on the inner wall of the temporary storage tank 3, a connecting pipe 1203 is fixedly connected with the bottom of the outer end of the temporary storage tank 3 at a position corresponding to the spiral flow groove 1202, a flow dividing box 1204 is fixedly connected with the other end of the connecting pipe 1203, return pipes 1205 are symmetrically and fixedly connected with one end of each of the two evaporation tanks 802, a water inlet channel 1206 is fixedly connected with the top of one evaporation tank 802 at a position corresponding to the position of the corresponding return pipe 1205, a floating ball 1207 is movably connected in the water inlet channel 1206, the water inlet channel 1207 is in a circular truncated cone arrangement, the diameter of the floating ball 1207 is larger than the inner diameter of the top of the water inlet channel 1206, a groove 1208 is arranged on, and the sealing plate 1210 has a diameter larger than the inner diameter of the return pipe 1205.

The working principle and the using process of the invention are as follows: firstly, the two evaporation tanks 802 heat and evaporate the liquid in the evaporation chamber 803 to generate steam, then the steam evaporated in the evaporation chamber 803 is sent to the compressor 813 through the hot air pipe 808, the temperature of the steam is increased, and then the steam is sent to the interior of the air rising box 811 at the bottom end of the sterilization tank 4 through the sterilization heating pipe 819, so that the steam enters the air rising box 811 at the top end of the sterilization tank 4 along the air rising pipe 812, the raw milk in the sterilization tank 4 is heated from bottom to top, and then the steam is discharged into the interior of the liquefaction tank 901 through the first exhaust pipe 820, meanwhile, the external air is sucked through the air box 807, the external air enters the heat exchange pipe 805 in the first evaporation tank 802 from the air inlet channel 806, the heat in the evaporation chamber 803 is absorbed, the hot air in the heat exchange pipe is sent to the interior of the air falling box 814 at the top end of the sterilization tank 4 through the first exhaust pipe 818, so that the hot air enters the air falling box, the raw milk in the sterilization tank 4 is heated from top to bottom, and is discharged through the descending air box 814 at the bottom end of the sterilization tank 4, so that the utilization rate of heat is increased, the raw milk can be heated more uniformly, the sterilization efficiency is improved, and in addition, when steam and hot air respectively enter the ascending air box 811 and the ascending air box 811, the air plate 816 is blown to rotate, so that the air plate 816 drives the stirring rod 817 to rotate, the raw milk in the sterilization tank 4 is stirred, the heating effect is further improved, and the quality of subsequent milk powder is further improved;

then, the raw milk in the liquid storage chamber 1001 is sprayed on the evaporation rotating plate 1004 through the spraying pipe 1007, and the driving motor 1008 is started, so that the driving motor 1008 drives the driving gear 1015 to rotate through the rotating rod 1009, and the driving gear 1015 and the driven gear are in matched transmission to drive the rotating block 1003 and the evaporation rotating plate 1004 to rotate, so that the evaporation rotating plate 1004 drives the raw milk to rotate, centrifugal force is generated, the raw milk is tightly attached to the evaporation rotating plate 1004, and when the evaporation rotating plate 1004 drives the raw milk to rotate, a part of high-temperature and high-pressure steam is sent into the heat exchange chamber 1006 through the concentrated heating pipe 809, and heat is conducted through lubricating oil in the cavity to heat the evaporation rotating plate 1004, so that the evaporation rotating plate 1004 heats the raw milk, water in the raw milk is evaporated, the concentration of the raw milk is improved, and the rotating shaft 1012 and the scraper 1013 are driven to rotate through the matching of the transmission shaft 1010 and the belt 1011, the raw milk on the evaporation rotating plate 1004 is turned, so that the evaporation effect of the raw milk is improved;

then, the steam after heat exchange in the sterilization tank 4 and the concentration tank 7 is respectively sent into the liquefaction tank 901 through the cooperation of the first exhaust pipe 820 and the second exhaust pipe 810, the steam after heat exchange is stored, the subsequent recovery is facilitated, and the resource waste is avoided;

then, the liquid absorbing heat from the inside of the second evaporation tank 802 is sent to the inside of the temporary storage tank 3 through the hot water pipe 1201, so that the hot water flows around the temporary storage tank 3 through the spiral flow groove 902, the raw milk in the temporary storage tank 3 is preheated to facilitate the subsequent heating of the raw milk, the sterilization effect is increased, then the liquid after heat exchange in the spiral flow groove 902 is led into the diversion box 1204 through the connecting pipe 1203, meanwhile, the liquid enters the first evaporation tank 802 through the return pipe 905 by the supporting effect of the supporting spring 909 on the sealing plate 1210, the liquid in the first evaporation tank 802 is supplemented, when the liquid in the first evaporation tank 802 is increased, the floating ball 1207 is driven to rise, so that the floating ball 1207 seals the water inlet passage 1206 to prevent the liquid from entering, and when the liquid cannot enter the first evaporation tank 802, the water pressure in the diversion box 1204 is increased, the supporting spring 909 is pushed to contract, so that the sealing plate 1210 is opened, the liquid enters the second evaporation tank 802 through the return pipe 905, and the second evaporation tank 802 is replenished with the liquid;

finally, the condensed and sterilized thick milk in the condensing tank 7 is sent into the heat-preserving tank 1102 through the matching of the water pump 1104 and the extraction pipe 1103, meanwhile, the gas which absorbs heat in the first evaporation tank 802 is sent into the annular coil 1105 in the heat-preserving tank 1102 through the second exhaust pipe 1106, so that the gas flows in the heat-preserving tank 1102 through the annular coil 1105, the temperature of the thick milk in the heat-preserving tank 1102 is reduced, the storage time of the thick milk is ensured, the gas after heat exchange enters the air return passage 1108 through the air guide pipe 1107, when the gas in the air return passage 1108 is gradually increased, the air baffle 1111 and the push rod 1110 are pushed to slide, the returned gas enters the air box 807, the returned gas is mixed with the external gas, the temperature of the external gas is improved, and the heat absorption efficiency of the follow-up heat is increased.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The preparation method of the compound milk powder is characterized by comprising the following steps: the method comprises the following steps:

s1, filtering and sterilizing the raw milk, adding different materials, fully mixing the materials with the raw milk, and storing the mixture in a temporary storage tank (3) in a first support (1) for later use;

s2, feeding the raw milk in the temporary storage tank (3) into the sterilization tank (4), evaporating by a circulating energy-saving heating mechanism (8) to generate steam, and heating the raw milk in the sterilization tank (4) from bottom to top by matching the steam with an updraft box (811) and an updraft pipe (812);

s3, enabling outside air to pass through the evaporation tank (802) through the air box (807), absorbing heat inside the evaporation tank (802), and heating the raw milk inside the sterilization tank (4) through evaporation from top to bottom through the matching of the descending air box (814) and the descending air pipe (815);

s4, when steam enters the rising air box (811) and the falling air box (814), the air blowing plate (816) is blown to drive the stirring rod (817) to stir the raw milk in the sterilization tank (4), so that the raw milk is heated more uniformly;

s5, feeding the sterilized raw milk into a concentration tank (7), continuously feeding the heated steam into the concentration tank (7) through a concentration heating pipe (809), and heating the raw milk in the concentration tank (7) to concentrate and sterilize the raw milk in the concentration tank (7);

s6, storing the concentrated thick milk in a heat-preservation tank (1102), and preserving the heat of the thick milk in the heat-preservation tank (1102) through a heat-preservation and energy circulation synergistic mechanism (11) to ensure the temperature of the thick milk;

2. The method for preparing the compound milk powder according to claim 1, which is characterized in that: the top end of the bottom plate (5) is fixedly connected with a circulating energy-saving heating mechanism (8);

the circulating energy-saving heating mechanism (8) comprises a fixed seat (801), an evaporation tank (802), an evaporation chamber (803), a heating chamber (804), a heat exchange pipe (805), an air inlet channel (806), an air box (807), a hot air pipe (808), a concentrated heating pipe (809), a second exhaust pipe (810), an air ascending box (811), an air ascending pipe (812), a compressor (813), an air descending box (814), an air descending pipe (815), an air plate (816), a stirring rod (817), a first exhaust pipe (818), a sterilizing heating pipe (819) and a first exhaust pipe (820);

the top end of the bottom plate (5) is symmetrically and fixedly connected with fixing seats (801), the top ends of the two fixing seats (801) are fixedly connected with evaporating pots (802), evaporating chambers (803) are arranged in the evaporating pots (802), heating chambers (804) are arranged in the evaporating pots (802) corresponding to the outer sides of the evaporating chambers (803), heat exchange tubes (805) are uniformly and fixedly connected to the central positions in the evaporating chambers (803), one of the evaporating pots (802) is fixedly connected with an air inlet channel (806) at one end, the other end of the air inlet channel (806) is fixedly connected with an air box (807), a compressor (813) is fixedly connected to the top end of the bottom plate (5) corresponding to the position between the two evaporating pots (802), one end of the compressor (813) is symmetrically and fixedly connected with a hot air tube (808), and the two hot air tubes (808) are respectively and fixedly connected with the top ends, the other end of the compressor (813) is fixedly connected with a concentration heating pipe (809), the other end of the concentration heating pipe (809) is fixedly connected with one end of a concentration tank (7), and one end of the concentration tank (7) is fixedly connected with a second exhaust pipe (810);

the other end of the compressor (813) is fixedly connected with a sterilizing heating pipe (819) corresponding to the top of the concentrating heating pipe (809), the other end of the sterilizing heating pipe (819) is fixedly connected with an air rising box (811), the top end of the air rising box (811) is fixedly connected with the bottom end of the sterilizing tank (4), the bottom end and the top end of the sterilizing tank (4) are both fixedly connected with the air rising box (811), the outer end of the air rising box (811) positioned at the top end of the sterilizing tank (4) is fixedly connected with a first exhaust pipe (820), the adjacent ends of the two air rising boxes (811) are both fixedly connected with an air rising pipe (812) at equal intervals, the opposite ends of the two air rising boxes (811) are both fixedly connected with a descending air box (814), the adjacent ends of the two descending air boxes (814) are both fixedly connected with descending air pipes (815) at equal intervals, and the air rising pipe, go up inside central point department of rising gas box (811) and decline gas box (814) and all rotate and be connected with aerofoil (816), the inside central point department of putting of retort (4) rotates and is connected with puddler (817), puddler (817) run through retort (4) and aerofoil (816) fixed connection, evaporating pot (802) one end is fixed to correspond heat exchange tube (805) position department fixed connection has first blast pipe (818), the decline gas box (814) fixed connection on first blast pipe (818) other end and retort (4) top.

3. The method for preparing the compound milk powder according to claim 2, which is characterized in that: the support blocks (2) are welded in the first support (1) at equal intervals, one side position in the first support (1) is fixedly connected with a temporary storage tank (3) through the support blocks (2), the other side position in the first support (1) is fixedly connected with a sterilization tank (4) through the support blocks (2), a bottom plate (5) is fixedly connected in the first support (1) corresponding to the bottom position of the sterilization tank (4), one end of the first support (1) is fixedly connected with a second support (6), and a concentration tank (7) is fixedly connected in the second support (6);

heating chamber (804) inside is provided with heating coil, and heating coil's input and external power source's output electric connection, the input of bellows (807) and external power source's output electric connection, evaporating pot (802) and air inlet channel (806) inside intercommunication are run through in heat exchange tube (805), the vacuum layer has been seted up to retort (4) inner wall, go up inside aerofoil (816) of air box (811) and descend inside aerofoil (816) direction of rotation the same of air box (814).

4. The method for preparing the compound milk powder according to claim 2, which is characterized in that: a rotary evaporation mechanism (10) is embedded in the concentration tank (7), and the rotary evaporation mechanism (10) comprises a liquid storage chamber (1001), a concentration chamber (1002), a rotating block (1003), an evaporation rotating plate (1004), a cavity (1005), a heat exchange chamber (1006), a material spraying pipe (1007), a driving motor (1008), a rotating rod (1009), a transmission shaft (1010), a belt (1011), a rotating shaft (1012), a scraper (1013), a driven gear (1014) and a driving gear (1015);

a liquid storage chamber (1001) is formed in the concentration tank (7), a concentration chamber (1002) is formed in the concentration tank (7) corresponding to the bottom of the liquid storage chamber (1001), a rotating block (1003) is rotatably connected to the inner wall of the concentration chamber (1002), an evaporation rotating plate (1004) is fixedly connected to one end of the rotating block (1003) corresponding to the position in the concentration chamber (1002), a cavity (1005) is formed between the inner wall of the concentration chamber (1002) and the evaporation rotating plate (1004), a heat exchange chamber (1006) is formed in the concentration tank (7) corresponding to the position of the evaporation rotating plate (1004), and a spraying pipe (1007) is fixedly connected to the bottom end of the liquid storage chamber (1001) corresponding to the side position of the evaporation rotating plate (1004);

a driving motor (1008) is fixedly connected in the second bracket (6) corresponding to the side position of the concentration tank (7), the output shaft of the driving motor (1008) is connected with a rotating rod (1009), the bottom end of the rotating rod (1009) penetrates through the bottom end of the second bracket (6), the bottom end of the rotating rod (1009) and the central position of the second bracket (6) are both rotationally connected with transmission shafts (1010), the outer ends of the two transmission shafts (1010) are both sleeved with belts (1011), a rotating shaft (1012) is rotatably connected at the position corresponding to the transmission shaft (1010) in the concentration chamber (1002), and the outer end of the rotating shaft (1012) is fixedly connected with a scraper (1013) at the position corresponding to the evaporation rotating plate (1004), the other end of the rotating block (1003) is fixedly connected with a driven gear (1014) at the position corresponding to the outer side of the concentration tank (7), the outer end of the rotating rod (1009) is fixedly connected with a driving gear (1015) at the position corresponding to the driven gear (1014).

5. The method for preparing the compound milk powder according to claim 4, wherein the method comprises the following steps: evaporation commentaries on classics board (1004) are the hopper-shaped setting, cavity (1005) inside is filled with lubricating oil, the input of driving motor (1008) and external power source's output electric connection, concentrated jar (7) are run through in pivot (1012) and concentrated chamber (1002) top is rotated and is connected, scraper blade (1013) one end is laminated with evaporation commentaries on classics board (1004) one end mutually, driving gear (1015) and impulse gear (1014) intermeshing are connected, and commentaries on classics piece (1003) are connected with concentrated jar (7) and are filled the sealing strip.

6. The method for preparing the compound milk powder according to claim 2, which is characterized in that: one end of the second support (6) is fixedly connected with a heat preservation and energy circulation synergistic mechanism (11), and the heat preservation and energy circulation synergistic mechanism (11) comprises a placing plate (1101), a heat preservation tank (1102), a pumping pipe (1103), a water pump (1104), an annular coil pipe (1105), a second exhaust pipe (1106), an air guide pipe (1107), an air return channel (1108), a connecting plate (1109), a push rod (1110), a wind shield (1111), a stop block (1112) and a tension spring (1113);

the bottom position of one end of the second support (6) is fixedly connected with a placing plate (1101), the top end of the placing plate (1101) is fixedly connected with a heat-insulating tank (1102), one end of the concentration tank (7) corresponds to the position of the heat-insulating tank (1102) and is fixedly connected with a draw-out pipe (1103), the inside of the second support (6) corresponds to the side position of the draw-out pipe (1103) and is fixedly connected with a water pump (1104), the inside of the heat-insulating tank (1102) is fixedly connected with an annular coil (1105), the outer end of the heat-insulating tank (1102) corresponds to the bottom position of the annular coil (1105) and is fixedly connected with a second exhaust pipe (1106), the other end of the second exhaust pipe (1106) is fixedly connected with one end of an evaporation tank (802), the outer end of the heat-insulating tank (1102) corresponds to the top position of the annular coil (1107) and is fixedly connected with a gas-leading, bellows (807) one end corresponds bleed pipe (1107) position department fixedly connected with return-air channel (1108), return-air channel (1108) inner wall fixedly connected with connecting plate (1109), connecting plate (1109) one end symmetry sliding connection has push rod (1110), push rod (1110) one end fixedly connected with deep bead (1111), push rod (1110) other end fixedly connected with dog (1112), and position department fixedly connected with tensioning spring (1113) between dog (1112) and connecting plate (1109).

7. The method for preparing the compound milk powder according to claim 6, wherein the method comprises the following steps: the input end of the water pump (1104) is electrically connected with the output end of an external power supply, and the diameter of the wind shield (1111) is larger than the inner diameter of the air guide pipe (1107).

8. The method for preparing the compound milk powder according to claim 2, which is characterized in that: the top end of the bottom plate (5) is provided with a liquefaction drainage mechanism (9) corresponding to one side of the other evaporation tank (802), and the liquefaction drainage mechanism (9) comprises a liquefaction box (901), a sliding groove (902), a clamping groove (903), a clamping block (904), a sliding plate (905), a plug plate (906), a drainage groove (907), a drainage pipe (908), a movable plate (909) and a circular groove (910);

a liquefaction tank (901) is fixedly connected at the position of one side of the top end of the bottom plate (5) corresponding to the other evaporation tank (802), sliding grooves (902) are symmetrically formed in the inner wall of the liquefaction box (901), clamping grooves (903) are symmetrically formed in the inner wall of the sliding grooves (902), clamping blocks (904) are connected to the insides of the two clamping grooves (903) in a sliding mode, sliding plates (905) are fixedly connected to the adjacent ends of the two clamping blocks (904), the bottom end of the sliding plate (905) is fixedly connected with a plug plate (906), a drainage groove (907) is arranged at the position of the bottom end of the clamping groove (903) corresponding to the plug plate (906), and one end of the liquefaction tank (901) is fixedly connected with a drain pipe (908) corresponding to the position of the drain tank (907), a movable plate (909) is connected to the position, corresponding to the fixture block (904), in the liquefaction box (901) in a sliding mode, and a circular groove (910) is formed in the center of the movable plate (909).

9. The method for preparing the compound milk powder according to claim 8, wherein the method comprises the following steps: the other ends of the first exhaust pipe (820) and the second exhaust pipe (810) are fixedly connected with one end of a liquefaction box (901), the other end of the drain pipe (908) is fixedly connected with one end of another evaporation tank (802), and the movable plate (901) is arranged in a hollow mode.

10. The method for preparing the compound milk powder according to claim 8, wherein the method comprises the following steps: one end of the other evaporation tank (802) is fixedly connected with a preheating and liquid backflow mechanism (12), and the preheating and liquid backflow mechanism (12) comprises a hot water pipe (1201), a spiral flow groove (1202), a connecting pipe (1203), a flow dividing box (1204), a backflow pipe (1205), a water inlet channel (1206), a floating ball (1207), a groove (1208), a supporting spring (1209) and a sealing plate (1210);

the other end of the evaporation tank (802) is fixedly connected with a hot water pipe (1201), one end of the hot water pipe (1201) is fixedly connected with one end of a temporary storage tank (3), a spiral flow groove (1202) is formed in the inner wall of the temporary storage tank (3), a connecting pipe (1203) is fixedly connected to the position, corresponding to the spiral flow groove (1202), of the bottom of the outer end of the temporary storage tank (3), the other end of the connecting pipe (1203) is fixedly connected with a flow distribution box (1204), one end of the flow distribution box (1204) is symmetrically and fixedly connected with return pipes (1205), the two return pipes (1205) are respectively and fixedly connected with one end of each of the two evaporation tanks (802), the top end of one evaporation tank (802) is fixedly connected with a water inlet channel (1206) corresponding to the position of each return pipe (1205), a floating ball (1207) is movably connected inside the water, the diameter of floater (1207) is greater than the internal diameter on inlet channel (1206) top, another back flow (1205) inner wall is seted up fluted (1208), recess (1208) one end fixedly connected with supporting spring (1209), the inside supporting spring (1209) one side position department sliding connection that corresponds of recess (1208) has closing plate (1210), and the diameter of closing plate (1210) is greater than the internal diameter of back flow (1205).