Milk powder spray drying device
By employing techniques such as compressed spraying, brush cleaning, preheating, and particle size classification in the milk powder spray drying device, the problem of milk powder adhering to the sidewalls during the drying process has been solved, achieving efficient drying and high-quality milk powder production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-17
AI Technical Summary
When drying milk powder, the existing drying equipment causes the powder to stick to the side wall of the container after the moisture evaporates, resulting in clumping and powder agglomeration, which affects product quality and production efficiency.
A milk powder spray drying device was designed. The device sprays milk into fine droplets using a compressor to increase the contact area with hot air. A brush is used to remove powder adhering to the side wall of the container. At the same time, a heating rod is used to preheat the milk to increase the temperature and accelerate the evaporation of moisture. Combined with a filter cloth, a particle size classification and cleaning system ensures cleanliness.
It significantly shortens drying time, reduces milk powder adhesion to the container sidewalls, improves product quality and production efficiency, and ensures the cleanliness of the container inner wall and the uniformity of milk powder.
Smart Images
Figure CN224125160U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spray drying technology, specifically a milk powder spray drying device. Background Technology
[0002] Milk powder is a powdered food made from fresh milk through processes such as sterilization, concentration, and spray drying. It retains the nutrients in milk, such as protein, calcium, and vitamins. It is easy to store, portable, and convenient to prepare. It can be directly mixed with warm water and is a common choice for infant formula and adult nutritional supplements.
[0003] The milk powder processing involves first cleaning and sterilizing fresh milk to remove impurities and microorganisms, then reducing the moisture content through vacuum concentration to form concentrated milk. Next, the concentrated milk is sprayed into fine droplets and sent into a drying tower, where it comes into contact with hot air and instantly evaporates the moisture into powder. Finally, the milk is sieved, cooled, and packaged to produce milk powder that is easy to store and prepare.
[0004] When existing drying devices dry milk, the powder that evaporates moisture adheres to the side wall of the drying container. This continuous adhesion can cause the milk powder to clump and become cakey. Therefore, a milk powder spray drying device is proposed to address the above problems. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A milk powder spray drying device of this utility model includes a container; a hot air box is fixedly connected to the top of the container; a motor is fixedly connected to the top of the container; a filter cloth is inherently attached to the side wall of the container; a compressor is fixedly connected to the top of the container; the compressor is connected to the inside of the milk storage box; a pair of crossbars are fixedly connected to the output end of the motor; multiple sets of spring telescopic rods are inherently attached to the side wall of the crossbars; a brush is fixedly connected to the top of the spring telescopic rods; a discharge port is fixedly connected to the bottom of the container; and a steam outlet is fixedly connected to the top of the container. By compressing and spraying milk into the container, forming fine droplets, the contact area between the milk and the hot air is significantly increased, accelerating moisture evaporation and shortening the drying time. The friction between the brush and the side wall of the container and the milk powder can reduce milk powder adhesion to the side wall of the container, preventing prolonged heating of the milk powder and resulting in powder agglomeration. This increases the cleanliness of the inner wall of the container and also improves the quality of the produced milk powder.
[0007] Preferably, a pair of heating rods are fixedly connected to the bottom of the milk storage box; the heating rods are symmetrically arranged in the middle of the milk storage box; a heat-insulating pad is fixedly connected to the side wall of the milk storage box; by setting the heating rods at the bottom of the milk storage box, the milk inside the milk storage box can be preheated evenly, increasing the initial temperature of the milk. After the milk at a higher temperature enters the drying chamber, it can evaporate moisture more quickly, shorten the drying time, and thus improve the overall drying efficiency.
[0008] Preferably, a filter cloth is fixed to the inner side of the container; the filter cloth is located near the discharge port; multiple sets of filter holes are opened at the top of the filter cloth; the filter cloth can be used to classify the particle size of the dried milk powder, the fine powder falls through the sieve holes and is discharged, while the larger particles remain on the surface of the filter cloth. The larger particles are removed and processed in a concentrated manner, and particles that do not meet the particle size requirements are screened out to ensure that the discharged milk powder has a uniform fineness.
[0009] Preferably, a fixed seat is fixedly connected to the side wall of the container; a striking rod is rotatably connected to the middle of the fixed seat; a striking head is fixedly connected to the top of the striking rod; by rotating the striking rod, the striking head is driven to vibrate the bottom of the filter cloth, which can loosen the powder adhering to or accumulating at the filter holes, reduce the clogging of the sieve holes caused by the mutual compression of powder particles, and ensure that the screening process continues smoothly.
[0010] Preferably, a shielding cloth is fixedly connected to the middle of the fixed base; the shielding cloth is wrapped around the side wall of the striking rod; by wrapping the shielding cloth around the side wall of the striking rod and sealing it, milk powder can be reduced from flowing out from the rotating connection, internal powder loss can be reduced, and external dust can be reduced from entering the container.
[0011] Preferably, a water pump is fixedly connected to the top of the container; the water pump is located near the hot air box; a water inlet is fixedly connected to the side wall of the water pump; the water pump is connected to the inside of the container; after the cleaning liquid is introduced through the water inlet, the water pump sprays evenly to cover the inside of the container, effectively removing milk powder residues adhering to the side wall of the container, ensuring thorough cleaning.
[0012] The advantages of this utility model are:
[0013] 1. The milk powder spray drying device of this utility model compresses and sprays milk into the container to form fine droplets, which significantly increases the contact area between the milk and the hot air, accelerates the evaporation of moisture, shortens the drying time, and reduces the milk powder adhering to the container side wall due to friction between the brush and the container side wall, which can reduce the milk powder from being heated for a long time and causing it to stick. This also increases the cleanliness of the inner wall of the container and can improve the quality of the milk powder after it is produced.
[0014] 2. The milk powder spray drying device of this utility model uses a heating rod set at the bottom of the milk storage box to preheat the milk inside the milk storage box evenly, increase the initial temperature of the milk, and allow the higher temperature milk to evaporate moisture faster after entering the drying chamber, thus shortening the drying time and improving the overall drying efficiency. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the main body of this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the brush in this utility model;
[0018] Figure 3 This is a schematic diagram of the structure of the shielding cloth in this utility model;
[0019] Figure 4 This is a schematic diagram of the striking rod in this utility model;
[0020] Figure 5 This is a schematic diagram of the water pump in this utility model.
[0021] In the diagram: 1. Container; 11. Hot air box; 12. Motor; 13. Milk storage box; 14. Compressor; 15. Crossbar; 16. Spring telescopic rod; 17. Brush; 18. Discharge port; 19. Steam outlet; 2. Insulation pad; 21. Heating rod; 3. Filter cloth; 31. Filter hole; 4. Fixing base; 41. Striking rod; 42. Striking head; 5. Shielding cloth; 6. Water pump; 61. Water inlet. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0023] Specific implementation examples are given below.
[0024] like Figures 1 to 5As shown in the embodiment of this utility model, a milk powder spray drying device includes a container 1; a hot air box 11 is fixedly connected to the top of the container 1; a motor 12 is fixedly connected to the top of the container 1; a filter cloth 3 is inherently attached to the side wall of the container 1; a compressor 14 is fixedly connected to the top of the container 1; the compressor 14 is connected to the inside of the milk storage box 13; a pair of crossbars 15 are fixedly connected to the output end of the motor 12; multiple sets of spring telescopic rods 16 are inherently attached to the side wall of the crossbars 15; a brush 17 is fixedly connected to the top of the spring telescopic rods 16; a discharge port 18 is fixedly connected to the bottom of the container 1; and a steam outlet 19 is fixedly connected to the top of the container 1. During operation, fresh milk is added to the inside of the milk storage box 13. After the fresh milk is added to the inside of the milk storage box 13, the compressor 14 is started. The compressor 14 draws in the milk stored inside the milk storage box 13, and then the compressor 14 compresses and sprays the milk into the inside of the container 1. The hot air box 11 is started to heat the entire inside of the container 1, so that the compressor 14... 4. After the milk sprayed into the container 1 comes into contact with the temperature inside, the moisture evaporates and the water vapor is discharged from the middle of the steam outlet 19. The powder falls to the bottom of the container 1 and is discharged from the discharge port 18. When the powder separates inside the container 1, it will adhere to the inner wall of the container 1. At this time, the motor 12 is started to drive the crossbar 15 to rotate. Due to the centrifugal force of the crossbar 15 rotation, the multiple sets of spring telescopic rods 16 on the side of the crossbar 15 extend and retract. The brush 17 contacts the inner wall of the container 1 and can sweep the powder adhering to the inner wall of the container 1, scraping the powder off the inner wall of the container 1 and letting it fall to the bottom of the container 1. By compressing and spraying the milk into the container 1, forming fine droplets, the contact area between the milk and the hot air is significantly increased, the moisture evaporation is accelerated, and the drying time is shortened. The friction between the brush 17 and the side wall of the container 1 and the milk powder adhering to it can reduce the milk powder adhering to the side wall of the container 1, which would cause the milk powder to be heated for a long time and cause it to become sticky. This increases the cleanliness of the inner wall of the container 1 and can also increase the quality of the milk powder after it is produced.
[0025] like Figures 1 to 2 As shown, a pair of heating rods 21 are fixedly connected to the bottom of the milk storage box 13; the heating rods 21 are symmetrically arranged in the middle of the milk storage box 13; a heat-insulating pad 2 is fixedly connected to the side wall of the milk storage box 13; during operation, after milk is added into the milk storage box 13, the pair of heating rods 21 are activated, and the heating rods 21 can preheat the milk inside the milk storage box 13. When the heating rods 21 preheat the milk inside the milk storage box 13, the temperature will dissipate from the side wall of the milk storage box 13, and the heat-insulating pad 2 can prevent the heat dissipation; by setting the heating rods 21 at the bottom of the milk storage box 13, the milk inside the milk storage box 13 can be preheated evenly, increasing the initial temperature of the milk. After the milk at a higher temperature enters the drying chamber, it can evaporate moisture more quickly, shorten the drying time, and thus improve the overall drying efficiency.
[0026] like Figure 4As shown, a filter cloth 3 is fixed to the inner side of the container 1; the filter cloth 3 is located near the discharge port 18; multiple sets of filter holes 31 are opened at the top of the filter cloth 3; during operation, the milk powder separated into powder inside the container 1 can fall onto the surface of the filter cloth 3, and the filter holes 31 can screen the powder, allowing the finer powder to flow down from the filter holes 31 and be discharged from the discharge port 18; the filter cloth 3 can be used to classify the particle size of the dried milk powder, with fine powder falling through the sieve holes and being discharged, while larger particles remain on the surface of the filter cloth 3. The larger particles are removed and processed centrally, and particles that do not meet the particle size requirements are screened out to ensure that the discharged milk powder has a uniform fineness.
[0027] like Figures 3 to 4 As shown, a fixed base 4 is fixedly connected to the side wall of the container 1; a striking rod 41 is rotatably connected to the middle of the fixed base 4; a striking head 42 is fixedly connected to the top of the striking rod 41; during operation, when milk powder remains on the surface of the filter cloth 3, pressure can be applied to the striking rod 41, causing the striking rod 41 to rotate in the middle of the fixed base 4, and the striking head 42 contacts the bottom of the filter cloth 3, vibrating the surface of the filter cloth 3 and shaking the milk powder on the surface of the filter cloth 3; by rotating the striking rod 41 and driving the striking head 42 to vibrate the bottom of the filter cloth 3, the powder adhering to or accumulating at the sieve holes of the filter hole 31 can be loosened, reducing the sieve hole blockage caused by the mutual compression of powder particles, and ensuring that the screening process continues smoothly.
[0028] like Figure 3 As shown, a shielding cloth 5 is fixedly connected to the middle of the fixed base 4; the shielding cloth 5 is wrapped around the side wall of the striking rod 41; during operation, when the striking rod 41 rotates in the middle of the fixed base 4, the shielding cloth 5 can seal the opening between the striking rod 41 and the fixed base 4, confining the milk powder inside the container 1; by wrapping the side wall of the striking rod 41 with the shielding cloth 5 and sealing it, the milk powder powder can be reduced from flowing out from the rotating connection, reducing the loss of internal powder, and also reducing the entry of external dust into the container 1.
[0029] like Figure 1 and Figure 5 As shown, a water pump 6 is fixedly connected to the top of the container 1; the water pump 6 is located near the hot air box 11; a water inlet 61 is fixedly connected to the side wall of the water pump 6; the water pump 6 is connected to the inside of the container 1; during operation, after the milk powder is dried and separated inside the container 1, cleaning liquid can be connected to the water inlet 61. The water pump 6 is started to spray the cleaning liquid into the container 1. At this time, the motor 12 is started to drive the crossbar 15 to rotate, agitating the cleaning liquid inside the container 1 and contacting it with the inside of the container 1 to clean the inside of the container 1; after the cleaning liquid is connected through the water inlet 61, the spray from the water pump 6 evenly covers the inside of the container 1, effectively removing milk powder residue attached to the side wall of the container and ensuring that there are no dead corners in the cleaning.
[0030] Working principle: Fresh milk is added into the milk storage box 13. After the milk is added, the compressor 14 is started. The compressor 14 draws in the milk stored in the milk storage box 13 and then sprays the compressed milk into the container 1. The hot air box 11 is started to heat the entire interior of the container 1. When the milk sprayed by the compressor 14 comes into contact with the temperature inside the container 1, the water evaporates. The water vapor is discharged from the middle of the steam outlet 19, and the powder falls to the bottom of the container 1 and is discharged from the discharge port 18. When the powder separates inside container 1, it adheres to the inner wall of container 1. At this time, the motor 12 is started, which drives the crossbar 15 to rotate. Due to the centrifugal force of the rotation of the crossbar 15, the multiple sets of spring-loaded telescopic rods 16 on the side of the crossbar 15 extend and retract. The brush 17 contacts the inner wall of container 1 and can sweep away the powder adhering to the inner wall of container 1, scraping the powder off the inner wall of container 1 and letting it fall to the bottom of container 1. After the milk is added into the milk storage box 13, a pair of heating rods 21 are activated. The heating rods 21 can heat the inside of the milk storage box 13. The milk is preheated. When the heating rod 21 preheats the milk inside the milk storage box 13, the temperature will dissipate from the side wall of the milk storage box 13. The heat preservation pad 2 can prevent heat dissipation. The milk powder separated into powder inside the container 1 can fall onto the surface of the filter cloth 3. The filter holes 31 can screen the powder, and the finer powder flows down from the filter holes 31 and is discharged from the discharge port 18. When the milk powder remains on the surface of the filter cloth 3, pressure can be applied to the striking rod 41, causing the striking rod 41 to rotate in the middle of the fixed base 4. The striking head 42 and the bottom of the filter cloth 3 When the filter cloth 3 is vibrated, the milk powder on the surface of the filter cloth 3 is shaken. When the striking rod 41 rotates in the middle of the fixed base 4, the shielding cloth 5 can seal the opening between the striking rod 41 and the fixed base 4, confining the milk powder inside the container 1. After the milk powder is dried and separated inside the container 1, the water inlet 61 can be connected to the cleaning liquid. The water pump 6 is started to spray the cleaning liquid into the container 1. At this time, the motor 12 is started to drive the crossbar 15 to rotate, agitating the cleaning liquid inside the container 1 and contacting the inside of the container 1 to clean the inside of the container 1.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A milk powder spray drying apparatus characterised in that: The container includes a container (1); a hot air box (11) is fixed to the top of the container (1); a motor (12) is fixed to the top of the container (1); a filter cloth (3) is fixed to the side wall of the container (1); a compressor (14) is fixed to the top of the container (1); the compressor (14) is connected to the inside of the milk storage box (13); a pair of crossbars (15) are fixed to the output end of the motor (12); multiple sets of spring telescopic rods (16) are fixed to the side wall of the crossbars (15); a brush (17) is fixed to the top of the spring telescopic rods (16); a discharge port (18) is fixed to the bottom of the container (1); and a steam outlet (19) is fixed to the top of the container (1).
2. The milk powder spray drying apparatus according to claim 1, characterized in that: A pair of heating rods (21) are fixedly connected to the bottom of the milk storage box (13); the heating rods (21) are symmetrically arranged in the middle of the milk storage box (13); and a heat preservation pad (2) is fixedly connected to the side wall of the milk storage box (13).
3. A milk powder spray drying apparatus as claimed in claim 2, wherein: The container (1) is fixed to the inside of a filter cloth (3); the filter cloth (3) is located near the discharge port (18); the top of the filter cloth (3) has multiple sets of filter holes (31).
4. The milk powder spray drying apparatus according to claim 3, characterized in that: The container (1) has a fixed seat (4) fixedly connected to its side wall; a striking rod (41) is rotatably connected to the middle of the fixed seat (4); and a striking head (42) is fixedly connected to the top of the striking rod (41).
5. A milk powder spray drying apparatus as claimed in claim 4, wherein: A shielding cloth (5) is fixedly attached to the middle of the fixed base (4); the shielding cloth (5) is wrapped around the side wall of the striking rod (41).
6. A milk powder spray drying apparatus as claimed in claim 5, wherein: A water pump (6) is fixedly connected to the top of the container (1); the water pump (6) is located near the hot air box (11); a water inlet (61) is fixedly connected to the side wall of the water pump (6); the water pump (6) is connected to the inside of the container (1).