Low-temperature spray drying equipment for protein powder production

Abstract

The present application relates to the technical field of protein powder production, in particular to a low-temperature spray drying equipment for protein powder production, which comprises a machine body, an air hammer, a material collecting system, a gas guiding system, a control system, a material bucket and a conveying pump, the air hammer is installed on the lower side of the machine body, the material collecting system is on one side of the machine body, the gas guiding system is on the other side of the machine body, the control system is arranged on the front side of the machine body, the conveying pump is arranged in the material bucket, the inside of the machine body is provided with an intermittent liquid separation assembly, which is used to prevent mist beads from combining, and the inside of the machine body is provided with a wall scraping assembly, the low-temperature spray drying equipment for protein powder production can make the turbulent flow assembly absorb air and be matched with the material collecting system to make the protein powder be crushed by different directions of suction force when the turbulent flow assembly absorbs air, and the protein powder is crushed again by air flow when the turbulent flow assembly emits air flow, so that the formation of the protein powder is fully ensured.

Description

Technical Field

[0001] This invention relates to the field of protein powder production technology, specifically to a low-temperature spray drying device for protein powder production. Background Technology

[0002] According to known records, protein powder is mainly used in the food industry, textile industry, leather industry, papermaking, printing industry and pharmaceutical industry. As for the drying methods of protein powder, the industry currently mainly uses vacuum drying or spray drying.

[0003] For the production of protein powder using spray drying, it generally consists of three processes: solution spraying, drying, and particle collection. In the drying and solution spraying processes, the raw materials for preparing protein powder, such as milk and eggs, are usually purified and separated to obtain whey. Then, the whey is sent to a dryer and atomized through a centrifugal atomizer.

[0004] During the atomization of whey using a centrifugal atomizer, the atomized droplets fall in a parabolic trajectory, resulting in the highest concentration of liquid near the inner wall of the atomizer. As the liquid is flung to the inner wall, it is dried by hot air. However, because atomization is continuous, the liquid adhering to the inner wall of the atomizer is re-wetted before it is fully dried, increasing the amount of adhering liquid. This makes it easy for product particles to adhere to the inner wall of the atomizer. Although an air hammer vibrates the machine, it is usually located on the lower side of the machine, and the vibration effect on the upper side is not ideal. Therefore, as the amount of adhering liquid increases, it causes protein powder to clump, affecting the formation of the protein powder and increasing the workload of cleaning the equipment. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a low-temperature spray drying device for protein powder production, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a low-temperature spray drying device for protein powder production, comprising a machine body, an air hammer, a material collection system, an air guiding system, a control system, a material hopper, and a conveying pump. The air hammer is installed on the lower side of the machine body, the material collection system is located on one side of the machine body, the air guiding system is located on the other side of the machine body, the control system is located on the front side of the machine body, and the conveying pump is located inside the material hopper. An intermittent liquid-blocking component is provided inside the machine body to prevent the formation of mist droplets. A wall scraping component is provided inside the machine body to scrape off clumps of protein powder adhering to the inner wall of the machine body. The wall scraping component has air holes. A cutting and crushing component is provided on the wall scraping component to initially crush the clumps of protein powder. A vibrating crushing component is provided on the wall scraping component to crush the protein powder missed by the cutting and crushing component. A turbulent crushing component is provided inside the machine body to improve the crushing effect of the clumps of protein powder.

[0007] Optionally, the intermittent liquid separation assembly includes a centrifugal atomizer, which is fixedly installed at the top of the internal cavity of the machine. A helical gearbox is installed on the output shaft of the centrifugal atomizer, and an intermittent partition is fixedly installed on the output shaft of the helical gearbox. A dispersing groove is provided on one side of the intermittent partition, and the upper end of the delivery pump is connected to the inside of the centrifugal atomizer.

[0008] Optionally, the wall scraping assembly includes a mounting ring, which is fixedly installed inside the machine body. A support column is fixedly installed on the upper surface of the mounting ring. A limit block is fixedly installed on the top of the support column. A return spring is sleeved on the outer surface of the support column. A drive frame is movably installed on the outer surface of the support column. A connecting rod is fixedly installed on the upper surface of the drive frame near the inner wall of the machine body. The other end of the connecting rod is fixedly connected to the wall scraping ring, and the wall scraping ring contacts the inner wall of the machine body.

[0009] The intermittent partition is located above the drive frame, and the intermittent partition is located on the side of the upper surface of the drive frame away from the inner wall of the machine body.

[0010] Optionally, the return spring is hollow inside, and the air hole is opened on the surface of the mounting ring, with the opening direction of the air hole inclined upwards.

[0011] Optionally, the cutting and crushing assembly includes a first crushing roller, which is movably mounted on the lower part of the inner side of the drive frame. A first rotating wheel is fixedly sleeved on the outer surface of the first crushing roller shaft. A transmission belt is drivenly connected to the outer surface of the first rotating wheel. A second rotating wheel is drivenly connected to the other end of the transmission belt. A second crushing roller is fixedly mounted in the middle of the second rotating wheel. The second crushing roller is movably mounted on the upper part of the inner side of the drive frame.

[0012] A driven crushing roller is provided on one side of the second crushing roller, and the second crushing roller is in contact with the driven crushing roller. The driven crushing roller is installed above the inner side of the drive frame.

[0013] Optionally, the vibratory crushing assembly includes an elastic cord, which is fixedly installed inside the mounting ring. A connector is fixedly installed on the lower side of the inner cavity of the machine body, and the upper end of the connector is fixedly connected to the elastic cord.

[0014] Optionally, the turbulent pulverizing assembly includes a sleeve, which is fixedly installed on the lower side of the inner cavity of the machine body. An airflow port is opened on the surface of the sleeve. A piston is movably installed inside the sleeve. A power rod is fixedly installed in the middle of the upper surface of the piston. The top of the power rod is fixedly connected to the edge of the bottom of the drive frame. The power rod is located in the gap between the elastic ropes.

[0015] Optionally, the diameter of the limiting block is larger than the diameter of the support column, the bottom of the reset spring is fixedly connected to the upper surface of the mounting ring, and the top of the reset spring is fixedly connected to the drive frame.

[0016] This invention provides a low-temperature spray drying device for protein powder production, which has the following beneficial effects:

[0017] 1. This low-temperature spray drying equipment for protein powder production can reduce the amount of protein powder droplets adhering to the inner wall of the machine through an intermittent liquid separation component, reduce the volume of protein powder clumps, make it easier for clumped protein powder to detach from the inner wall of the machine, and break the droplets into smaller and more numerous pieces, thereby improving the drying efficiency of the protein powder.

[0018] 2. This low-temperature spray drying equipment for protein powder production uses a wall scraping component to scrape off the protein powder condensed on the inner wall of the machine. When the wall scraping component is in operation, airflow is generated in the pores to blow away the mist droplets that are dispersed and moved downward by the intermittent baffles, increasing their retention time in the inner cavity of the machine and allowing the protein powder to be fully dried. At the same time, another part of the airflow generated by the pores can accelerate the drying of the protein powder condensed on the inner wall of the machine, making it easier to fall off and facilitate subsequent crushing and molding. It can also clean the inner wall of the machine.

[0019] 3. The low-temperature spray drying equipment used for protein powder production can drive the cutting and crushing components through the air vents, so that the cutting and crushing components can initially crush the clumps of protein. With the vibration effect of the air hammer, the elastic rope can further crush the clumps of protein powder, and at the same time, it can prevent the leakage of clumps of protein powder that have not been cut and crushed by the cutting and crushing components.

[0020] 4. The low-temperature spray drying equipment for producing protein powder, through the linkage of the wall scraping component, enables the turbulence component to pulverize the protein powder by suction in different directions when it is sucking in air, and with the cooperation of the material collection system. When the turbulence component ejects air, it uses the airflow to pulverize the protein powder again, fully ensuring the formation of the protein powder. Attached Figure Description

[0021] Figure 1 This is a side view of the structure of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the internal structure of the machine body of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the reset spring of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the cutting and shredding assembly of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the vibration crushing assembly of the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the sleeve of the present invention.

[0027] In the diagram: 1. Machine body; 11. Air hammer; 12. Material collection system; 13. Air guiding system; 14. Control system; 15. Material bucket; 16. Conveying pump; 2. Centrifugal atomizer; 21. Helical gearbox; 22. Intermittent baffle; 23. Dispersing groove; 3. Mounting ring; 31. Support column; 32. Limiting block; 33. Return spring; 34. Drive frame; 35. Connecting rod; 36. Scraper ring; 4. Air hole; 5. First crushing roller; 51. First rotating wheel; 52. Transmission belt; 53. Second rotating wheel; 54. Second crushing roller; 55. Driven crushing roller; 6. Elastic rope; 61. Connecting piece; 7. Sleeve; 71. Air outlet; 72. Piston; 73. Power rod. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Example 1:

[0030] Please see Figures 1 to 3This invention provides a technical solution: a low-temperature spray drying device for protein powder production, comprising a body 1, an air hammer 11, a material receiving system 12, an air guiding system 13, a control system 14, a material tank 15, and a conveying pump 16. The air hammer 11 is installed on the lower side of the body 1, the material receiving system 12 is located on one side of the body 1, the air guiding system 13 is located on the other side of the body 1, the control system 14 is located on the front side of the body 1, the conveying pump 16 is located inside the material tank 15, and an intermittent liquid-separating assembly is provided inside the body 1. The components are used to prevent the formation of mist droplets. The inside of the machine body 1 is equipped with a wall scraping component, which is used to scrape off the clumps of protein powder adhering to the inner wall of the machine body 1. The wall scraping component has air holes 4. The wall scraping component is equipped with a cutting and crushing component, which is used to initially crush the clumps of protein powder. The wall scraping component is equipped with a vibrating crushing component, which is used to crush the protein powder missed by the cutting and crushing component. The inside of the machine body 1 is equipped with a turbulent crushing component, which is used to improve the crushing effect of the clumps of protein powder.

[0031] The intermittent liquid separation assembly includes a centrifugal atomizer 2, which is fixedly installed on the top of the inner cavity of the body 1. A helical gearbox 21 is installed on the output shaft of the centrifugal atomizer 2, and an intermittent partition 22 is fixedly installed on the output shaft of the helical gearbox 21. A dispersing groove 23 is opened on one side of the intermittent partition 22, and the upper end of the delivery pump 16 is connected to the inside of the centrifugal atomizer 2.

[0032] Please see Figure 2 and Figure 3 In this embodiment, the wall scraping assembly includes a mounting ring 3, which is fixedly installed inside the body 1. A support column 31 is fixedly installed on the upper surface of the mounting ring 3. A limit block 32 is fixedly installed on the top of the support column 31. A reset spring 33 is sleeved on the outer surface of the support column 31. A drive frame 34 is movably installed on the outer surface of the support column 31. A connecting rod 35 is fixedly installed on the side of the upper surface of the drive frame 34 near the inner wall of the body 1. The other end of the connecting rod 35 is fixedly connected to a wall scraping ring 36. The wall scraping ring 36 contacts the inner wall of the body 1.

[0033] The diameter of the limiting block 32 is larger than the diameter of the support column 31. The bottom of the reset spring 33 is fixedly connected to the upper surface of the mounting ring 3, and the top of the reset spring 33 is fixedly connected to the drive frame 34.

[0034] Intermittent partition 22 is located above drive frame 34, and intermittent partition 22 is located on the side of the upper surface of drive frame 34 away from the inner wall of body 1.

[0035] Specifically, the helical gearbox 21 can drive the intermittent baffle 22 to rotate using the rotation of the centrifugal atomizer 2 as a power source, intermittently separating the mist droplets to prevent the mist droplets from continuously adhering to the inner wall of the body 1, thereby reducing the amount of protein powder adhering and reducing the volume of protein powder clumps, which facilitates the subsequent crushing and shaping of the protein powder clumps adhering to the inner wall surface of the body 1.

[0036] Furthermore, during the process of fog droplets falling, those that are not dried in time will combine with other fog droplets to become larger fog droplets, which will increase the difficulty of drying the airflow.

[0037] When the intermittent baffle 22 rotates, the dispersing groove 23 disperses the mist droplets, breaking them down into more and smaller droplets, which facilitates drying and improves drying efficiency. The rotation of the intermittent baffle 22 drives the drive frame 34, which, in conjunction with the return spring 33, reciprocates up and down. This, along with the connecting rod 35, causes the scraping ring 36 to reciprocate up and down, scraping off the protein powder condensed on the inner wall surface of the machine body 1. This prevents the amount of protein powder adhering to the surface from increasing and avoids the formation of larger clumps that are difficult to crush. Simultaneously, reducing the amount of protein powder adhering to the surface makes it easier to dry the protein powder adhering to the inner wall of the machine body 1, improving the drying effect and making it easier to scrape off.

[0038] Example 2:

[0039] Please see Figure 2 and Figure 3 The return spring 33 is hollow inside, and the air hole 4 is opened on the surface of the mounting ring 3. The opening direction of the air hole 4 is inclined upward.

[0040] Based on Example 1, when the dispersing groove 23 disperses the mist droplets, the downward speed of the mist droplets will increase. The increased downward speed will indirectly reduce the time that the mist droplets stay in the inner cavity of the machine body 1, which may easily lead to insufficient drying of the protein powder.

[0041] During the process of the return spring 33 being continuously compressed and reset, airflow is generated each time the air hole 4 is compressed, and the direction of the airflow is inclined upward. Therefore, it can blow the mist droplets that are accelerating downward upward, reduce their downward speed, and make them stay in the inner cavity of the machine body 1 for a longer time, thus improving their drying effect.

[0042] The other part of the airflow generated by the vent 4 will blow on the inner wall of the body 1. Under the obstruction of the inner wall of the body 1, the airflow will spread along the inner wall and blow on the protein powder adhering to the inner wall of the body 1. The airflow can accelerate the removal of liquid in the protein powder and accelerate the drying of the protein powder adhering to the inner wall of the body 1.

[0043] Compared to the inner wall near the centrifugal atomizer 2, the amount of protein powder adhering to the inner wall below the centrifugal atomizer 2 does not increase rapidly due to the slower movement speed of the mist droplets. It is also easier to detach when it is closer to the air hammer 11. However, the amount of protein powder adhering will still increase as the mist droplets continue to adhere. By using the air vent 4 to blow air onto the inner wall of the body 1, the adhered protein powder can be more easily detached, avoiding the problem of increasing the amount of protein powder adhering to the inner wall as the mist droplets continue to adhere, and further reducing the volume of protein powder agglomeration.

[0044] Example 3:

[0045] Please see Figure 2 and Figure 4 The cutting and crushing assembly includes a first crushing roller 5, which is movably mounted on the lower part of the inner side of the drive frame 34. A first rotating wheel 51 is fixedly sleeved on the outer surface of the rotating shaft of the first crushing roller 5. A transmission belt 52 is drivenly connected to the outer surface of the first rotating wheel 51. A second rotating wheel 53 is drivenly connected to the other end of the transmission belt 52. A second crushing roller 54 is fixedly mounted in the middle of the second rotating wheel 53. The second crushing roller 54 is movably mounted on the upper part of the inner side of the drive frame 34.

[0046] A driven crushing roller 55 is provided on one side of the second crushing roller 54. The second crushing roller 54 is in contact with the driven crushing roller 55. The driven crushing roller 55 is installed above the inner side of the drive frame 34.

[0047] Based on Example 2, when the airflow generated by the air hole 4 blows obliquely upward, it can drive the first crushing roller 5 to rotate. The rotation of the first crushing roller 5 can drive the first rotating wheel 51 to rotate, so that the first rotating wheel 51 drives the transmission belt 52. The transmission belt 52 can drive the second rotating wheel 53, so that the second rotating wheel 53 drives the second crushing roller 54 to rotate. The second crushing roller 54 is in contact with the driven crushing roller 55. Utilizing the friction between the second crushing roller 54 and the driven crushing roller 55, when the second crushing roller 54 rotates, it can also drive the driven crushing roller 55 to rotate.

[0048] When the clumped protein powder is scraped off or dried and automatically falls off, the rotation of the first crushing roller 5, the second crushing roller 54 and the driven crushing roller 55 can crush the clumped protein powder and improve the forming effect of the clumped protein powder.

[0049] At the same time, the protein powder falling on the surface of the second crushing roller 54 and the driven crushing roller 55 will not only be cut by them, but also move up and down in the drive frame 34, and can also drive the protein powder to vibrate. The crushing effect can be further improved by the crushing of the second crushing roller 54 and the driven crushing roller 55.

[0050] The first crushing roller 5, the second crushing roller 54, and the driven crushing roller 55 can be made of lightweight plastic, making them easier to be blown and improving the cutting and crushing effect.

[0051] Example 4:

[0052] Please see Figure 2 and Figure 5 The vibratory crushing assembly includes an elastic cord 6, which is fixedly installed inside the mounting ring 3. A connector 61 is fixedly installed on the lower side of the inner cavity of the machine body 1, and the upper end of the connector 61 is fixedly connected to the elastic cord 6.

[0053] Based on the air pore 3 in the embodiment, the clumped protein powder that has been initially crushed or the protein powder that was missed and not crushed will fall onto the surface of the elastic cord 6. Since the connector 61 is installed on the lower side of the machine body 1 and is close to the air hammer 11, the vibration generated by the air hammer 11 on the machine body 1 will be further transmitted to the elastic cord 6 through the connector 61, so that the elastic cord 6 vibrates faster and further crushes the clumped protein powder, improves the crushing effect, and makes it more perfect.

[0054] Example 5:

[0055] Please see Figure 2 and Figure 6 The turbulent pulverizing component includes a sleeve 7, which is fixedly installed on the lower side of the inner cavity of the machine body 1. An airflow port 71 is opened on the surface of the sleeve 7. A piston 72 is movably installed inside the sleeve 7. A power rod 73 is fixedly installed in the middle of the upper surface of the piston 72. The top of the power rod 73 is fixedly connected to the bottom edge of the drive frame 34. The power rod 73 is located in the gap between the elastic rope 6 and the elastic rope 6.

[0056] Based on Example 1, when the drive frame 34 moves up and down, it will also drive the power rod 73 to move up and down. When the power rod 73 drives the piston 72 to move upward, it will cause the air outlet 71 to suck in air. The original airflow direction on the lower side of the inner cavity of the machine body 1 is introduced into the piston 72. The suction direction generated by the air outlet 71 is different from the suction direction of the material collection system 12. At this time, the protein powder will be pulled by suction in different directions and further crushed, thus improving the molding effect.

[0057] When the power rod 73 drives the piston 72 to move downward, the airflow will be ejected from the airflow port 71. The impact of the airflow will further pulverize the protein powder, ensuring that it is fully pulverized and further improving the protein powder forming effect.

[0058] In summary, by combining the cutting and crushing components, the vibrating crushing components, and the turbulent crushing components, clumped protein powder can be crushed, facilitating the drying of the protein powder, increasing the contact area between the airflow and the protein powder, and removing its internal moisture, thereby improving drying efficiency.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-temperature spray drying device for protein powder production, comprising a body (1), an air hammer (11), a material receiving system (12), an air guiding system (13), a control system (14), a material hopper (15), and a conveying pump (16), wherein the air hammer (11) is installed on the lower side of the body (1), the material receiving system (12) is located on one side of the body (1), the air guiding system (13) is located on the other side of the body (1), the control system (14) is located on the front side of the body (1), and the conveying pump (16) is located inside the material hopper (15), characterized in that: The body (1) is provided with an intermittent liquid-separating component, which is used to prevent the atomized droplets from combining. The body (1) is provided with a wall-scraping component, which is used to scrape off the agglomerated protein powder adhering to the inner wall of the body (1). The wall-scraping component is provided with an air hole (4). The wall-scraping component is provided with a cutting and crushing component, which is used to initially crush the agglomerated protein powder. The wall-scraping component is provided with a vibration crushing component, which is used to crush the protein powder missed by the cutting and crushing component. The body (1) is provided with a turbulent crushing component, which is used to improve the crushing effect of the agglomerated protein powder. The intermittent liquid-separating component includes a centrifugal atomizer (2). The centrifugal atomizer (2) is fixedly installed on the top of the inner cavity of the body (1). A helical gearbox (21) is installed on the output shaft of the centrifugal atomizer (2). An intermittent partition plate (22) is fixedly installed on the output shaft of the helical gearbox (21). A dispersing groove (23) is opened on one side of the intermittent partition plate (22). The scraping assembly includes a mounting ring (3), which is fixedly installed inside the body (1). A support column (31) is fixedly installed on the upper surface of the mounting ring (3). A limit block (32) is fixedly installed on the top of the support column (31). A reset spring (33) is sleeved on the outer surface of the support column (31). A drive frame (34) is movably installed on the outer surface of the support column (31). The intermittent partition (22) is located on the side of the upper surface of the drive frame (34) away from the inner wall of the body (1). The reset spring (33) is hollow inside. The air hole (4) is opened on the surface of the mounting ring (3). The opening direction of the air hole (4) is inclined upward. When the intermittent partition (22) rotates, it will drive the drive frame (34).

2. The low-temperature spray drying equipment for protein powder production according to claim 1, characterized in that: The upper end of the delivery pump (16) is connected to the inside of the centrifugal atomizer (2).

3. The low-temperature spray drying equipment for protein powder production according to claim 1, characterized in that: A connecting rod (35) is fixedly installed on the upper surface of the drive frame (34) near the inner wall of the body (1). A scraping ring (36) is fixedly connected to the other end of the connecting rod (35). The scraping ring (36) is in contact with the inner wall of the body (1).

4. The low-temperature spray drying equipment for protein powder production according to claim 1, characterized in that: The cutting and crushing assembly includes a first crushing roller (5), which is movably mounted on the lower side of the inner side of the drive frame (34). A first rotating wheel (51) is fixedly sleeved on the outer surface of the rotating shaft of the first crushing roller (5). A transmission belt (52) is drivenly connected to the outer surface of the first rotating wheel (51). A second rotating wheel (53) is drivenly connected to the other end of the transmission belt (52). A second crushing roller (54) is fixedly mounted in the middle of the second rotating wheel (53). The second crushing roller (54) is movably mounted on the upper side of the inner side of the drive frame (34). A driven crushing roller (55) is provided on one side of the second crushing roller (54). The second crushing roller (54) is in contact with the driven crushing roller (55). The driven crushing roller (55) is mounted on the upper side of the inner side of the drive frame (34).

5. The low-temperature spray drying equipment for protein powder production according to claim 4, characterized in that: The vibratory crushing assembly includes an elastic cord (6), which is fixedly installed on the inner side of the mounting ring (3). A connector (61) is fixedly installed on the lower side of the inner cavity of the machine body (1), and the upper end of the connector (61) is fixedly connected to the elastic cord (6).

6. The low-temperature spray drying equipment for protein powder production according to claim 5, characterized in that: The turbulent pulverizing assembly includes a sleeve (7), which is fixedly installed on the lower side of the inner cavity of the machine body (1). An airflow port (71) is opened on the surface of the sleeve (7). A piston (72) is movably installed inside the sleeve (7). A power rod (73) is fixedly installed in the middle of the upper surface of the piston (72). The top of the power rod (73) is fixedly connected to the edge of the bottom of the drive frame (34). The power rod (73) is located in the gap between the elastic cord (6) and the elastic cord (6).

7. The low-temperature spray drying equipment for protein powder production according to claim 6, characterized in that: The diameter of the limiting block (32) is larger than the diameter of the support column (31). The bottom of the reset spring (33) is fixedly connected to the upper surface of the mounting ring (3), and the top of the reset spring (33) is fixedly connected to the drive frame (34).

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