Low temperature spray drying and waste heat recycling apparatus for pea protein powder

Abstract

This utility model relates to the field of pea protein powder technology, and discloses a low-temperature spray drying and waste heat circulation device for pea protein powder. The device includes a drying tank with a lid on top. A first connecting pipe is connected through and fixedly to one side of the top of the lid. A heat exchanger is connected through and fixedly to the bottom of the first connecting pipe. A heating box is fixedly connected to one side of the outer wall of the drying tank. An air inlet pipe is connected through and fixedly to one side of the top of the heating box. A heat exchanger is located on the top of the inner wall of the heating box. A second connecting pipe is connected through and fixedly to one side of the heat exchanger. A first fan is connected through and fixedly to one side of the second connecting pipe. In this utility model, when the first fan operates, the exhaust gas from the drying tank enters the heat exchanger through the first connecting pipe. The heat exchanger performs heat exchange, and the heat reaches above the second filter screen. Simultaneously, the second fan operates, and cold air enters through the air inlet pipe.

Description

Technical Field

[0001] This utility model relates to the field of pea protein powder technology, specifically a low-temperature spray drying and waste heat circulation device for pea protein powder. Background Technology

[0002] Pea protein powder is a high-quality protein extracted from peas using advanced low-temperature and low-pressure technology. Pea protein contains all eight essential amino acids for the human body and is a complete protein.

[0003] In the production of existing pea protein powder, the pea protein material is placed in an oven and dried by setting a certain temperature and time. During the drying process, the temperature and time need to be adjusted appropriately according to the drying condition of the material, and the material needs to be turned over from time to time to ensure uniform drying. After that, it is left to cool for a period of time or the oven door is opened directly for subsequent work.

[0004] However, when drying pea protein powder in an oven, the oven contains a certain amount of heat, which cannot be utilized, resulting in a waste of resources. To address this issue, a low-temperature spray drying and waste heat circulation device for pea protein powder is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a low-temperature spray drying and waste heat circulation device for pea protein powder, which solves the problem in the prior art where the oven contains a certain amount of heat, making it impossible to utilize the waste heat and thus causing a waste of resources.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature spray drying and waste heat circulation device for pea protein powder, comprising a drying tank, a lid on the top of the drying tank, a first connecting pipe extending through and fixedly connected to one side of the top of the lid, a heat exchanger extending through and fixedly connected to the bottom of the first connecting pipe, a heating box fixedly connected to one side of the outer wall of the drying tank, an air inlet pipe extending through and fixedly connected to one side of the top of the heating box, a heat exchanger on the top of the inner wall of the heating box, a second connecting pipe extending through and fixedly connected to one side of the heat exchanger, a first fan extending through and fixedly connected to one side of the second connecting pipe, and a second fan extending through and fixedly connected to the bottom of the heating box. Two fans are connected to the bottom of the second fan, with a third connecting pipe passing through and fixedly connected to the bottom. A conveying pipe passes through and is fixedly connected to the other end of the third connecting pipe. A uniformly distributed branch pipe passes through and is fixedly connected to one side of the outer ring of the conveying pipe. A first filter screen passes through and is slidably connected to the bottom of one side of the outer wall of the heating chamber. A heating copper pipe is installed on the top of the first filter screen. Heating heads are fixedly connected to both ends of the heating copper pipe, passing through and being slidably connected to the heating chamber. An activated carbon filter screen passes through and is slidably connected to the center of one side of the outer wall of the heating chamber. A second filter screen is installed on the top of the activated carbon filter screen. A temperature sensor is installed on the rear side of the outer wall of the drying tank. A spray assembly is installed on the top of the cover.

[0007] By adopting the above technical solution, the first fan operates, drawing the exhaust gas from the drying tank into the heat exchanger through the first connecting pipe. The heat exchanger performs heat exchange, transferring the heat to the top of the second filter screen. At the same time, the second fan operates, drawing in cold air through the intake pipe, which then passes through the heat exchanger and is delivered to the top of the second filter screen.

[0008] As a further description of the above technical solution: the spray assembly includes an L-shaped plate, which is fixedly connected to a cover. A motor is fixedly connected to the top of the inner wall of the L-shaped plate. A first gear is fixedly connected to the output end of the motor. A second gear is meshed with one side of the outer ring of the first gear. A rigid tube is fixedly connected to the inner ring of the second gear. An atomizing disc is passed through and fixedly connected to the bottom of the rigid tube. A rotary joint is passed through and fixedly connected to the top of the rigid tube. A transport pipe is passed through and fixedly connected to the top of the rotary joint. A first scraper is fixedly connected to one side of the outer ring of the rigid tube. A second scraper is fixedly connected to the bottom of the first scraper. A spiral feeding pipe is fixedly connected to one side of the second scraper.

[0009] By adopting the above technical solution, the spray assembly can atomize and spray the raw materials in the drying tank for drying.

[0010] As a further description of the above technical solution: a drying tank is connected and fixedly connected to one end of the branch pipe.

[0011] By adopting the above technical solution, the branch pipe facilitates the delivery of heated gas into the drying tank.

[0012] As a further description of the above technical solution: a heating box is slidably connected through the outer wall of the second filter screen, and a heating copper tube is arranged between the inner walls of the heating box.

[0013] By adopting the above technical solution, the internal gas can be heated by heating the copper tube and heating head.

[0014] As a further description of the above technical solution: a discharge pipe is connected through and fixedly connected to the bottom of the drying tank, a slide valve is connected through and fixedly connected to the bottom of the discharge pipe, and a spiral feeding pipe is rotatably connected to the inner ring of the discharge pipe.

[0015] By adopting the above technical solution, when the slide gate valve is opened, it is convenient to discharge the material, and at the same time, the screw feeder can rotate to discharge the material.

[0016] As a further description of the above technical solution: a solenoid valve is connected through and fixedly to the top of the transport pipe, a storage tank is connected through and fixedly to the top of the solenoid valve, and a booster pump is connected through and fixedly to the top of the storage tank.

[0017] By adopting the above technical solution, the booster pump can pressurize the storage tank and discharge the internal liquid.

[0018] As a further description of the above technical solution: a solenoid valve is fixedly connected through and to the top of the air intake pipe.

[0019] By adopting the above technical solution, the solenoid valve controls the intake pipe.

[0020] As a further description of the above technical solution: a second scraper is rotatably connected to the inner wall of the drying tank, and a first scraper is rotatably connected to the bottom of the lid.

[0021] By adopting the above technical solution, the first scraper can clean the area under the cover.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] This utility model provides a low-temperature spray drying and waste heat recycling device for pea protein powder. The device consists of a heating box, a heat exchanger, heating copper pipes, and a heating head. A first fan operates, drawing exhaust gas from the drying tank into the heat exchanger through a first connecting pipe. The heat exchanger performs heat exchange, transferring heat to above the second filter screen. Simultaneously, a second fan operates, drawing in cold air through the inlet pipe. This air then passes through the heat exchanger and is transported to above the second filter screen. The waste heat and newly introduced gas are then filtered through the second filter screen and an activated carbon filter, heated by the heating copper pipes, and transported by the second fan to a third connecting pipe, from which it is sprayed out from a branch pipe. This process enables waste heat recovery and reduces resource waste.

[0024] This utility model provides a low-temperature spray drying and waste heat circulation device for pea protein powder. It consists of a motor, a first gear, a second gear, a rotary joint, a rigid tube, and a second scraper. When the motor is started, it drives the first gear to rotate, and then the second gear rotates, which in turn drives the rigid tube to rotate, and then drives the atomizing disc to rotate, thus achieving centrifugal atomization. At the same time, the rotation of the rigid tube drives the second scraper and the first scraper to rotate, and the spiral feeding tube rotates along with it, which can reduce the adhesion to the inner wall during spray drying. Attached Figure Description

[0025] Figure 1 This is a perspective view of the overall structure of this utility model;

[0026] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the drying tank structure of this utility model;

[0028] Figure 4 This is a cross-sectional view of the heating box structure of this utility model.

[0029] In the diagram: 1. Drying tank; 2. Lid; 3. Heating chamber; 4. Discharge pipe; 5. Slide valve; 6. Solenoid valve; 7. Second gear; 8. First gear; 9. Motor; 10. L-shaped plate; 11. Rotary joint; 12. Rigid pipe; 13. Transport pipe; 14. First connecting pipe; 15. Air inlet pipe; 16. First fan; 17. Second connecting pipe; 18. Temperature sensor; 19. Atomizing disc; 20. Booster pump; 21. Second scraper; 22. First scraper; 23. Spiral feed pipe; 24. Second fan; 25. Third connecting pipe; 26. Conveying pipe; 27. Branch pipe; 28. Heating copper pipe; 29. ​​Heating head; 30. First filter screen; 31. Second filter screen; 32. Activated carbon filter screen; 33. Heat exchanger; 34. Storage tank. Detailed Implementation

[0030] 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 protection scope of the present utility model.

[0031] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0032] Combination Figure 1 and Figure 3This utility model discloses a low-temperature spray drying and waste heat circulation device for pea protein powder, comprising a drying tank 1, a lid 2 on the top of the drying tank 1, a first connecting pipe 14 passing through and fixedly connected to one side of the top of the lid 2, the first connecting pipe 14 facilitating the delivery of exhaust gas into a heat exchanger 33, the bottom end of the first connecting pipe 14 passing through and fixedly connected to the heat exchanger 33, the heat of the exhaust gas remaining in the heating chamber 3 after passing through the heat exchanger 33, a branch pipe 27 passing through and fixedly connected to the drying tank 1, a second filter 31 passing through and slidably connected to the heating chamber 3, a heating copper pipe 28 and a heating head 29 for heating the air, which is then delivered into the drying tank 1 by a second fan 24, a heating copper pipe 28 disposed between the inner walls of the heating chamber 3, and a heating copper pipe 28 passing through the bottom of the drying tank 1. The discharge pipe 4 is connected and fixedly connected. When the slide valve 5 is opened, the dried material can be discharged. The bottom of the discharge pipe 4 is connected and fixedly connected to the slide valve 5. The inner ring of the discharge pipe 4 is rotatably connected to the spiral feeding pipe 23. The top of the transport pipe 13 is connected and fixedly connected to the solenoid valve 6. The top of the solenoid valve 6 is connected and fixedly connected to the storage tank 34. The top of the storage tank 34 is connected and fixedly connected to the booster pump 20. When the booster pump 20 is working, it can transport the raw material in the drying tank 1 into the transport pipe 13. The solenoid valve 6 controls the air inlet pipe 15. When the solenoid valve 6 is opened, the gas will enter. The top of the air inlet pipe 15 is connected and fixedly connected to the solenoid valve 6. The inner wall of the drying tank 1 is rotatably connected to the second scraper 21. The bottom of the cover 2 is rotatably connected to the first scraper 22.

[0033] Combination Figures 2-4A heating chamber 3 is fixedly connected to one side of the outer wall of the drying tank 1. An air inlet pipe 15 is fixedly connected to one side of the top of the heating chamber 3. The air inlet pipe 15 is used to transport external gas into the heating chamber 3 for heating, and then into the drying tank 1 for heating. A heat exchanger 33 is installed on the top of the inner wall of the heating chamber 3. The heat exchanger 33 is a plate heat exchanger, which is a device that transfers part of the heat of the hot fluid to the cold fluid. The hot and cold fluids flow in opposite or the same direction in adjacent channels, and exchange heat through the plates. The corrugated structure makes the fluid... Strong turbulence is generated within the flow channel, reducing boundary layer thermal resistance and enhancing heat transfer efficiency. The openings at the four corners of the plates form fluid distribution and collection pipes, allowing hot and cold media to flow through their respective channels for heat exchange. A second connecting pipe 17 is connected and fixedly connected to one side of the heat exchanger 33. When the first fan 16 operates, exhaust gas can be drawn into the heat exchanger 33. The first fan 16 is connected and fixedly connected to one side of the second connecting pipe 17. A second fan 24 is connected and fixedly connected to the bottom of the heating box 3. A third connecting pipe is connected and fixedly connected to the bottom of the second fan 24. The third connecting pipe 25 has a conveying pipe 26 that is fixedly connected to the other end. When the second fan 24 is working, the heated gas can be conveyed into the third connecting pipe 25 to heat the drying tank 1. A uniformly distributed branch pipe 27 is fixedly connected to one side of the outer ring of the conveying pipe 26. A first filter screen 30 is slidably connected to the bottom of one side of the outer wall of the heating box 3. The first filter screen 30 and the activated carbon filter screen 32 can filter the passing gas. When replacement is needed, it can be pulled out from one side. A heating copper tube 28 is installed at the top of the heating chamber 3. The two ends of the heating copper tube 28 pass through the heating chamber 3 and are fixedly connected to the heating head 29. An activated carbon filter screen 32 is slidably connected through and at the center of one side of the outer wall of the heating chamber 3. A second filter screen 31 is installed on the top of the activated carbon filter screen 32. The second filter screen 31 can perform a second filtration. A temperature sensor 18 is installed on the rear side of the outer wall of the drying chamber 1. The temperature sensor 18 can detect the temperature inside the drying chamber 1 and keep the internal temperature at 60-80 degrees for low-temperature drying. A spray assembly is installed on the top of the lid 2.

[0034] Combination Figure 2 and Figure 4The spray assembly includes an L-shaped plate 10, which is fixedly connected to the cover 2. A motor 9 is fixedly connected to the top of the inner wall of the L-shaped plate 10. When the motor 9 works, it can drive the atomizing disc 19 to work and achieve centrifugal atomization. A first gear 8 is fixedly connected to the output end of the motor 9. A second gear 7 is meshed on one side of the outer ring of the first gear 8. When the rigid tube 12 rotates, it can drive the first scraper 22 and the second scraper 21 to rotate and clean the inside. The rigid tube 12 is fixedly connected to the inner ring of the second gear 7. The atomizing disc 19 is fixedly connected through the bottom of the rigid tube 12. A rotary joint 11 is fixedly connected through the top of the rigid tube 12. A transport pipe 13 is fixedly connected through the top of the rotary joint 11. A first scraper 22 is fixedly connected to one side of the outer ring of the rigid tube 12. A second scraper 21 is fixedly connected to the bottom of the first scraper 22. When the spiral feeding pipe 23 rotates, it can prevent blockage during material feeding. A spiral feeding pipe 23 is fixedly connected to one side of the second scraper 21.

[0035] Working principle: During use, the raw materials are stored inside the storage tank 34. The booster pump 20 operates and opens the solenoid valve 6, allowing the raw materials to be conveyed into the transport pipe 13. Simultaneously, the heating head 29 and the heating copper pipe 28 heat the gas inside the heating box 3. The second fan 24 delivers hot air into the transport pipe 26, which is then sprayed out from the branch pipe 27. The heating copper pipe 28 monitors the temperature, maintaining it between 60 and 80 degrees Celsius. Simultaneously, the motor 9 starts, driving the first gear 8 to rotate. The second gear 7 then rotates, causing the rigid pipe 12 to rotate, which in turn drives the atomizing disc 19, achieving low-temperature drying. The rotary joint 11 does not affect the rotation. When the rigid pipe 1... When rotating, it can drive the first scraper 22 and the second scraper 21 to rotate, which can scrape the inside of the drying tank 1 to prevent adhesion during drying. Then, during drying, the exhaust gas generated will enter the first connecting pipe 14. The first fan 16 will start working, which can drive the exhaust gas into the heat exchanger 33 for heat exchange. The heat will then be above the second filter screen 31. The newly entering gas enters from the air inlet pipe 15 and reaches the second filter screen 31. The exhaust gas heat and the newly entering gas are filtered through the second filter screen 31 and the activated carbon filter screen 32. After being heated by the heated copper pipe 28, it re-enters the conveying pipe 26 and is sprayed out, realizing the recycling of waste heat and reducing waste.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low temperature spray drying and waste heat recycling device for pea protein powder, comprising a drying tank (1), characterized in that: The drying tank (1) is provided with a cover (2) on the top. A first connecting pipe (14) is connected through and fixedly connected to one side of the top of the cover (2). A heat exchanger (33) is connected through and fixedly connected to the bottom of the first connecting pipe (14). A heating box (3) is fixedly connected to one side of the outer wall of the drying tank (1). An air inlet pipe (15) is connected through and fixedly connected to one side of the top of the heating box (3). A heat exchanger (33) is provided on the top of the inner wall of the heating box (3). A second connecting pipe (17) is connected through and fixedly connected to one side of the heat exchanger (33). A first fan (16) is connected through and fixedly connected to one side of the second connecting pipe (17). A second fan (24) is connected through and fixedly connected to the bottom of the heating box (3). A third connecting pipe (24) is connected through and fixedly connected to the bottom of the second fan (24). 25), the other end of the third connecting pipe (25) is connected to a conveying pipe (26), the outer ring of the conveying pipe (26) is connected to a uniformly distributed branch pipe (27), the bottom of the outer wall of the heating box (3) is connected to a first filter screen (30), the top of the first filter screen (30) is provided with a heating copper pipe (28), the two ends of the heating copper pipe (28) are connected to the heating box (3) and a heating head (29), the center of the outer wall of the heating box (3) is connected to an activated carbon filter screen (32), the top of the activated carbon filter screen (32) is provided with a second filter screen (31), the rear side of the outer wall of the drying tank (1) is provided with a temperature sensor (18), and the top of the cover (2) is provided with a spray assembly.

2. A pea protein powder low temperature spray drying and waste heat recycling device according to claim 1, characterized in that: The spray assembly includes an L-shaped plate (10), which is fixedly connected to a cover (2). A motor (9) is fixedly connected to the top of the inner wall of the L-shaped plate (10). A first gear (8) is fixedly connected to the output end of the motor (9). A second gear (7) is meshed with one side of the outer ring of the first gear (8). A rigid tube (12) is fixedly connected to the inner ring of the second gear (7). An atomizing disc (19) is fixedly connected through the bottom of the rigid tube (12). A rotary joint (11) is fixedly connected through the top of the rigid tube (12). A transport pipe (13) is fixedly connected through the top of the rotary joint (11). A first scraper (22) is fixedly connected to one side of the outer ring of the rigid tube (12). A second scraper (21) is fixedly connected to the bottom of the first scraper (22). A spiral feeding pipe (23) is fixedly connected to one side of the second scraper (21).

3. A pea protein powder low temperature spray drying and waste heat recycling device according to claim 1, characterized in that: One end of the branch pipe (27) is connected to a drying tank (1).

4. A pea protein powder low temperature spray drying and waste heat recycling device according to claim 1, characterized in that: The outer wall of the second filter (31) is slidably connected to a heating box (3), and a heating copper tube (28) is provided between the inner walls of the heating box (3).

5. A pea protein powder low temperature spray drying and waste heat recycling device according to claim 1, characterized in that: The bottom of the drying tank (1) is connected to a discharge pipe (4), the bottom of the discharge pipe (4) is connected to a slide valve (5), and the inner ring of the discharge pipe (4) is connected to a spiral feeding pipe (23).

6. A pea protein powder low temperature spray drying and waste heat recycling device according to claim 2, characterized in that: A solenoid valve (6) is connected through and fixedly connected to the top of the transport pipe (13), a storage tank (34) is connected through and fixedly connected to the top of the solenoid valve (6), and a booster pump (20) is connected through and fixedly connected to the top of the storage tank (34).

7. A pea protein powder low temperature spray drying and waste heat recycling device according to claim 1, characterized in that: A solenoid valve (6) is fixedly connected through the top of the air intake pipe (15).

8. The low-temperature spray drying and waste heat recycling device for pea protein powder according to claim 1, characterized in that: The inner wall of the drying tank (1) is rotatably connected to a second scraper (21), and the bottom of the lid (2) is rotatably connected to a first scraper (22).

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