Spray drying tower for milk powder production

Abstract

The invention relates to the technical field of milk powder production, and provides a spray drying tower for milk powder production, which comprises a tower body, a drying area is fixedly connected in the tower body, a support frame is fixedly connected below the tower body, a cover plate is assembled above the drying area, a milk feeding pipe is fixedly connected above the cover plate, and a milk outlet pipe is fixedly connected above the milk feeding pipe. A spraying device is fixedly connected to the lower portion of the milk feeding pipe, and a movable shaft penetrating through the spraying device is fixedly connected to the lower portion of the milk feeding pipe. According to the technical scheme, the problems that in the prior art, discharging is inconvenient and difficult, and after long-term machining, due to the fact that the space in the tower is narrow, cleaning is inconvenient, and manual cleaning is needed are solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of milk powder production, and in particular, to a spray drying tower for milk powder production. Background Art

[0002] Milk powder spray drying is an indispensable part of dairy product processing. It can effectively extend the shelf life of dairy products, increase their stability, and improve the efficiency and convenience of industrial production.

[0003] The role of milk powder spray drying: Milk powder spray drying is a crucial step in dairy processing, primarily intended to convert liquid dairy products, such as milk or whey, into powdered milk. Milk powder spray drying involves spraying the liquid substance into hot air, causing it to rapidly evaporate. The specific steps are as follows: First, the liquid dairy product, such as milk or whey, is processed to remove unwanted components, such as fat, protein, and sugar. The processed liquid dairy product is then sprayed into a specially designed spray drying tower. Upon entering the spray drying tower, the liquid dairy product is immediately exposed to the hot air, heating it and causing the water to evaporate. Under the influence of the hot air, the water in the sprayed liquid dairy product gradually evaporates, resulting in small particles of milk powder. Air and impurities are then separated from the milk powder through a centrifuge before packaging.

[0004] Two key variables in the milk powder spray drying process are the temperature and air flow rate within the spray tower. Adjusting the temperature can affect the size and moisture content of the milk powder particles, while adjusting the air flow rate can influence the shape and yield of the milk powder particles. Within the spray drying tower, the internal ambient temperature and humidity can be precisely controlled, ensuring the highest quality of the milk powder.

[0005] Although the spray tower in the prior art can realize the spray drying of milk powder, there are problems such as inconvenient and difficult discharge of materials. Moreover, after long-term processing, the space inside the tower is small and it is inconvenient to clean, requiring manual cleaning. Summary of the Invention

[0006] To overcome the above-mentioned defects, an embodiment of the present invention provides a spray drying tower for milk powder production, which solves the problems in the prior art of inconvenient and difficult discharging, and the technical problem that after long-term processing, the space inside the tower is small, cleaning is inconvenient, and manual cleaning is required.

[0007] According to one aspect, at least one embodiment of the present invention provides a spray drying tower for milk powder production, comprising: A tower body, wherein a drying area is fixedly connected to the interior of the tower body, a support frame is fixedly connected to the bottom of the tower body, a cover plate is installed above the drying area, a milk feed pipe is fixedly connected above the cover plate, a spray device is fixedly connected below the milk feed pipe, and a movable shaft that passes through the spray device is fixedly connected below the milk feed pipe; A protective shell is fixedly connected to the bottom of the outer side of the drying area, a ratchet is equipped at the bottom of the output shaft, a push rod is fixedly connected to one side of the ratchet, a T-shaped circular groove is provided at the bottom of the drying area, a T-shaped slide is slidably connected to the inside of the T-shaped circular groove, a connecting rod is fixedly connected to the bottom of the outer side of the drying area, an annular hydraulic rod is fixedly connected below the locking connecting rod, a hydraulic pipe is connected to the tail of the annular hydraulic rod, a material movable plate is equipped at the bottom of the inner wall of the drying area, a hydraulic lifting rod is fixedly connected to the bottom of the inner wall of the drying area, and a lifting frame is fixedly connected to the outer side of the hydraulic lifting rod.

[0008] For example, in a spray drying tower for milk powder production provided by at least one embodiment of the present invention, a lifting end is fixedly connected to the top of the cover plate, an observation port is opened on the top of the cover plate, a driving motor is fixedly connected to the bottom of the output shaft, a spiral stirring fixed plate is fixedly connected to the bottom of the movable shaft, suction pumps are fixedly connected to both sides of the spiral stirring fixed plate, spiral stirring shafts are equipped at both ends of the fixed plate, the output shaft passes through the tower body and the drying area and is connected to the movable shaft, electric heating wire rods are fixedly connected to the two ends and the middle of the output shaft, a total of three, the outer wall of the electric heating wire rod is wrapped with an electric heating wire, and a heating chamber is provided in the middle of the tower body and the drying area.

[0009] The movable shaft and the output shaft are snap-connected and can be separated. When connected, they can drive the movable shaft to rotate. The lifting frame is fixedly connected to the material movable plate, and the hydraulic lifting rod is fixedly connected to the drying area.

[0010] A scraper fixing plate is fixedly connected to the bottom of the spiral stirring fixed plate, and hydraulic push blocks are installed at both ends of the scraper fixing plate. Hydraulic pipes 2 are connected to the top of the two hydraulic push blocks, and the two hydraulic pipes 2 are connected to cylindrical hydraulic rods. Scrapers are connected to the bottom of the two cylindrical hydraulic rods, and a protrusion is fixedly connected to the inner wall of the drying area.

[0011] According to another aspect, at least one embodiment of the present invention also provides a spray drying tower for milk powder production, wherein the position of the protrusions corresponds to the height of the scraper fixing plate, the protrusions have the same shape, and there are seventeen of them in total, which are evenly distributed in a 360-degree circle on the inner wall of the drying zone.

[0012] The scraper fixing plate is fixedly connected to the spiral stirring fixing plate in a cross shape, and the scraper fixing plate drives the spiral stirring fixing plate to rotate synchronously.

[0013] The two sides of the scraper fixing plate are fixedly connected with detergent water tanks, the sides of the two detergent water tanks are connected with cleaning pipes, the cleaning pipes are fixedly connected to the cleaning plate, the inner side of the scraper is fixedly connected with the cleaning plate, the inner side of the cleaning plate is provided with a spray hole, and the outer side of the spray hole is slidably connected with a water outlet switch.

[0014] For example, in a spray drying tower for milk powder production provided by at least one embodiment of the present invention, there are two cleaning plates, which are distributed on the inner sides of the two scrapers and have the same size and shape.

[0015] There are seven spray holes distributed on the cleaning plate, which are of the same size and shape and are evenly distributed linearly downward. A water outlet switch is slidably connected above each spray hole.

[0016] The beneficial effects of the embodiments of the present invention are: In the present invention, by separating the drying area and the cover plate, the movable shaft can be separated from the output shaft through the cooperation of the crane and the lifting end, and then the ratchet drives the annular hydraulic rod through the reverse rotation of the bottom drive motor, so that the hydraulic lifting rod drives the material movable plate to rise, avoiding the problem of difficult material discharge due to the narrow drying area.

[0017] In the present invention, the scraper fixing plate is driven to rotate by a driving motor, so that the scraper rotates, and the hydraulic push blocks at both ends of the scraper fixing plate collide with the protrusions on the inner wall of the drying area, so that the cylindrical hydraulic rod drives the scraper to move up and down, so that the scraper scrapes up and down to remove milk powder residue on the inner wall of the drying area, and deeply cleans the inner wall of the drying area.

[0018] In the present invention, when the drying tower needs to be cleaned, the detergent water tank on the scraper fixing plate is used to transport water into the cleaning plate through the cleaning pipe connected to the detergent water tank and the cleaning plate, and the spray holes opened on the cleaning plate move up and down with the scraper, so that the water outlet switch above the spray hole is closed up and down, so that the cleaning water inside flows out, thereby solving the problem of difficult manual cleaning due to the excessive depth of the drying area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of some parts of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of some parts of the present invention; Figure 5 For the present invention Figure 2 Schematic diagram of the enlarged structure of A in the middle; Figure 6 A schematic diagram of the three-dimensional structure of the scraper assembly of the present invention; Figure 7 A schematic diagram of the three-dimensional structure of the scraper assembly of the present invention; Figure 8 For the present invention Figure 6 The enlarged structural diagram at B in the middle; Figure 9 It is a schematic diagram of the three-dimensional structure of the cleaning component of the present invention.

[0021] In the figure: 1. Tower body; 2. Drying area; 3. Support frame; 4. Lifting end; 501, movable shaft; 502, lifting frame; 503, hydraulic lifting rod; 504, material movable plate; 505, connecting rod; 506, push rod; 507, annular hydraulic rod; 508, hydraulic pipe 1; 509, T-shaped circular groove; 510, T-shaped slide; 511, ratchet; 512, protective shell; 6. Scraper assembly; 601. Scraper fixing plate; 602. Scraper; 603. Hydraulic push block; 604. Hydraulic pipe 2; 605. Cylindrical hydraulic rod; 606. Bump; 7. Cleaning components; 701. Detergent tank; 702. Cleaning pipe; 703. Spray hole; 704. Water outlet switch; 705. Cleaning plate; 8. Observation port; 9. Milk feed pipe; 10. Spray device; 11. Feed pump; 12. Spiral stirring fixed plate; 13. Spiral stirring shaft; 14. Heating chamber; 15. Electric heating wire; 16. Drive motor; 17. Output shaft; 18. Cover plate; 19. Electric heating wire rod. DETAILED DESCRIPTION The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0022] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0023] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0024] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0025] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0026] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] like Figures 1 to 9 As shown, it shows a spray drying tower for milk powder production in one embodiment of the present invention, comprising: The tower body 1 has a drying area 2 fixedly connected to the inside of the tower body 1. The drying area 2 and its tower body 1 are made of corrosion-resistant and high-temperature resistant materials, which can effectively cope with the high temperature and corrosive gases generated during the milk powder drying process. A support frame 3 is fixedly connected to the bottom of the tower body 1. The support frame 3 is made of alloy, corrosion-resistant, and arranged in a triangular circle. The support is stable and can fix the entire spray drying tower for milk powder production. A cover plate 18 is installed above the drying area 2. A milk feed pipe 9 is fixedly connected to the top of the cover plate 18. A spray device 10 is fixedly connected to the bottom of the milk feed pipe 9. A movable shaft 501 that passes through the spray device 10 is fixedly connected to the bottom of the milk feed pipe 9. A lifting end 4 is fixedly connected to the top of the cover plate 18. An observation port 8 is provided above the cover plate 18. A drive shaft 17 is fixedly connected to the bottom of the output shaft 17. The driving motor 16 can drive the output shaft 17, and the output shaft 17 is snap-connected to the movable shaft 501. The output shaft 17 can both drive the movable shaft 501 to rotate and separate the movable shaft 501. A spiral stirring fixed plate 12 is fixedly connected to the bottom of the movable shaft 501. The two sides of the spiral stirring fixed plate 12 are fixedly connected to the material pump 11. The two ends of the fixed plate 512 are equipped with a spiral stirring shaft 13. The output shaft 17 passes through the tower body 1 and the drying area 2 and is connected to the movable shaft 501. The two ends and the middle of the output shaft 17 are fixedly connected with electric heating wire rods 18, a total of three. The three electric heating wire rods 18 can make the milk powder heated more evenly, so that its drying effect and heating efficiency are high. The outer wall of the electric heating wire rod 18 is wrapped with an electric heating wire 15, and there is a heating chamber 14 in the middle of the tower body 1 and the drying area 2.

[0028] In some examples, a protective shell 512 is fixedly connected to the bottom of the outer side of the drying zone 2. The protective shell 512 isolates the annular hydraulic rod 507 of the heating chamber 14 from being immersed in water. A ratchet 511 is installed at the bottom of the output shaft 17. The ratchet 511 will not work during forward rotation, and will only work during reverse rotation, so that the equipment can operate normally. A push rod 506 is fixedly connected to one side of the ratchet 511. A T-shaped circular groove 509 is provided at the bottom of the drying zone 2. A T-shaped slide plate 510 is slidably connected to the inside of the T-shaped circular groove 509. A connecting rod 505 is fixedly connected to the bottom of the outer side of the drying zone 2. The lower part of the connecting rod 505 is fixedly connected to An annular hydraulic rod 507, the tail of which is connected to a hydraulic pipe 508, a material movable plate 504 is assembled at the bottom of the inner wall of the drying zone 2, a hydraulic lifting rod 503 is fixedly connected to the bottom of the inner wall of the drying zone 2, a lifting frame 502 is fixedly connected to the outer side of the hydraulic lifting rod 503, the movable shaft 501 and the output shaft 17 are snap-fit ​​connection, which can be separated and can drive the movable shaft 501 to rotate when connected, the separate connection between the movable shaft 501 and the output shaft 17 improves the flexibility of the movable shaft 501 and makes it more convenient to use, the lifting frame 502 is fixedly connected to the material movable plate 504, and the hydraulic lifting rod 503 is fixedly connected to the drying zone 2.

[0029] For example, Figures 1 to 9 As shown, the drive motor 16 is started. Under normal working conditions, the drive motor 16 rotates in the forward direction, and the spiral stirring shaft 13 and the electric heating wire rod 18 are connected to the output shaft 17, so that the spiral stirring shaft 13 and the electric heating wire rod 18 rotate in the forward direction, and the electric heating wire rod 18 heats the air inside the drying zone 2, generating a high temperature environment inside the drying zone 2. The ratchet 511 at the bottom outside the drying zone 2 ensures that the annular hydraulic rod 507 is not affected, and the milk is transported to the spray device 10 through the milk feeding pipe 9 and sprayed into a mist of milk in the drying zone 2 through the spray device 10. The high temperature environment inside the drying zone 2 can evaporate the water in the liquid milk, turning it into milk powder, and The spiral stirring shaft 13 fully stirs the milk powder and mist milk suspended in the drying area 2 by rotating up and down, ensuring sufficient heating. At the same time, the electric heating wire rod 18 also rotates synchronously with the spiral stirring shaft 13, and the electric heating wire rod 18 heats the liquid in the heating chamber 14 to increase its temperature. The rotation of the electric heating wire rod 18 also ensures uniform heating. The middle electric heating wire rod 18 heats the internal liquid, so that the milk powder is heated evenly, ensuring balanced internal and external temperatures, thereby ensuring good drying effect and high drying efficiency. After the milk powder is dried, the drive motor 16 is reversed, and the reverse rotation of the drive motor 16 causes the ratchet 511 to work, driving the push rod 50 fixedly connected thereto. 6, and the push rod 506 pushes the annular hydraulic rod 507, so that the liquid in the annular hydraulic rod 507 is squeezed into the hydraulic pipe 1 508, and the hydraulic pressure in the hydraulic pipe 1 508 is transmitted to the internal hydraulic lifting rod 503 of the drying zone 2. The hydraulic lifting rod 503 with the transmitted power begins to rise, and the top of the lifting frame 502 outside the hydraulic lifting rod 503 is connected to it, and the bottom end of the lifting frame 502 is connected to the material movable plate 504 at the bottom of the drying zone 2. When the hydraulic lifting rod 503 rises and falls, it will drive the material movable plate 504 to rise. The milk powder is piled above the material movable plate 504, driving it to rise together, and the movable shaft 501 and the output shaft 17 are separated. There is a snap-on connection between the movable shaft 501 and the output shaft 17. The output shaft 17 can drive the movable shaft 501 to rotate, and the parts above the spiral stirring shaft 13 are connected to the movable shaft 501. After the material movable plate 504 pushes up the dried milk powder and the spiral stirring shaft 13, the crane and the lifting end 4 cooperate to lift the cover plate 18 and take out the entire movable shaft 501 together with the parts above it, so that only the dried milk powder is left above the material movable plate 504. Then the workers transport the dried milk powder away and install the movable shaft 501 above the output shaft 17. The drive motor 16 stops working, causing the hydraulic lifting rod 503 to drop to the bottom, restoring it to its original state.

[0030] like Figures 1 to 9As shown, it shows another embodiment of the present invention, a scraper fixing plate 601 is fixedly connected to the lower side of the spiral stirring fixing plate 12, and the scraper fixing plate 601 is fixedly connected to the spiral stirring fixing plate 12 in a cross shape. The scraper fixing plate 601 drives the spiral stirring fixing plate 12 to rotate synchronously. The scraper fixing plate 601 and the spiral stirring fixing plate 12 are fixedly connected in a cross shape, which can effectively prevent the two fixing plates from interfering with each other and ensure stability during operation. Hydraulic push blocks 603 are installed at both ends of the scraper fixing plate 601, and hydraulic pipe 2 604 is connected to the upper side of the two hydraulic push blocks 603. The two hydraulic pipes 2 604 is connected to a cylindrical hydraulic rod 605, and a scraper 602 is connected below the two cylindrical hydraulic rods 605. A protrusion 606 is fixedly connected to the inner wall of the drying area 2. When the protrusion 606 on the inner wall of the drying area 2 squeezes the hydraulic push block 603, it generates force, driving the cylindrical hydraulic rod 605 to move downward. When leaving the protrusion 606, the cylindrical hydraulic rod 605 will rise, thereby deeply cleaning the inner wall of the drying area 2. The position of the protrusion 606 corresponds to the height of the scraper fixing plate 601. The protrusions 606 have the same shape, and there are seventeen of them, which are evenly distributed in a 360-degree circle on the inner wall of the drying area 2. For example, Figures 1 to 9 As shown, after the dried milk powder is taken out, the movable shaft 501 is also installed on the output shaft 17, and the drive motor 16 is started to rotate forward. After the motor 16 is started to rotate forward, the output shaft 17 is driven to rotate, so that the output shaft 17 drives the movable shaft 501 to rotate. The rotation of the movable shaft 501 drives the scraper fixing plate 601 to rotate, and the scrapers 602 at both ends of the scraper fixing plate 601 rotate. The scrapers 602 are close to the inner wall of the drying area 2, and the milk powder remaining on the inner wall is cleared when the scrapers rotate. Hydraulic push blocks 603 are fixedly connected to the side ends of both sides of the scraper fixing plate 601. A hydraulic pipe 2 604 is connected to the scraper fixing plate 601 above the hydraulic push 603. The cylindrical hydraulic rod 605 is fixedly connected to the scraper 602 below the scraper fixing plate 601. A protrusion 606 is fixedly connected to the position of the hydraulic push block on the inner wall of the drying zone 2. The protrusions 606 are distributed in a circular array. When the scraper fixing plate 601 rotates, the protrusion 606 squeezes the hydraulic push block 603 so that the liquid in the hydraulic push block 603 is connected to the cylindrical hydraulic rod 605, causing it to move downward with the scraper 602. When the scraper fixing plate 601 rotates to a certain angle and there is no protrusion 606, the hydraulic push block 603 will rebound, causing the cylindrical hydraulic rod 605 to rise, and this process will be repeated every time it passes a protrusion 606.

[0031] like Figures 1 to 9As shown, it shows another embodiment of the present invention, the two sides of the scraper fixing plate 601 are fixedly connected with a detergent water tank 701, the interior of the detergent water tank 701 is a product of water mixed with detergent, the sides of the two detergent water tanks 701 are connected with a cleaning pipe 702, the cleaning pipe 702 is fixedly connected to the cleaning plate 602, the inner side of the scraper 602 is fixedly connected with a cleaning plate 705, there are two cleaning plates 705, distributed on the inner side of the two scrapers 602, the same size and shape, the inner side of the cleaning plate 705 A spray hole 703 is provided, and a water outlet switch 704 is slidably connected to the outer side of the spray hole 703. The setting of the water outlet switch 704 prevents the spray hole from being blocked by milk powder when stirring the milk powder, thereby causing cleaning difficulties. A total of seven spray holes 703 are distributed on a cleaning plate 705, with the same size and shape, and are linearly and evenly distributed downward. A water outlet switch 704 is slidably connected above each spray hole 703. When the scraper 602 rotates at a high speed, the water mixed with the detergent inside the spray hole 703 is sprayed out to clean the drying area 2. For example, Figures 1 to 9 As shown, after the processing is completed, when the inner wall of the drying area 2 needs to be deeply cleaned, a detergent water tank 701 is fixedly connected above the scraper fixing plate 601. The detergent water tank 701 contains a mixture of water and detergent. The cleaning water tank 701 is taken out to fill water at the beginning of cleaning and then put back. A cleaning pipe 702 is connected to the side of the cleaning water tank 701, and the cleaning pipe 702 is connected to a cleaning plate 705 fixed on the inner side of the scraper 602. Seven spray holes 703 are opened on the cleaning plate 705, and a sliding water outlet switch 704 is provided above the spray hole 703. When the scraper fixing plate 601 is not working, the water switch 704 will be closed due to the action of gravity, preventing water from flowing out of the spray hole 703. When the scraper fixing plate 601 is working and rotating, the hydraulic push block 603 will cause the scraper 602 to move up and down, and the up and down movement of the scraper 602 will drive the up and down movement of the water outlet switch 704, so that clean water can flow out of the water outlet switch 704. The water sprayed from the water outlet switch 704 cooperates with the scraper 602 to clean the interior of the drying area 2, so that there is no need to waste human resources to clean the narrow drying area 2.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A spray drying tower for milk powder production, characterized in that: include: A tower body (1), wherein a drying area (2) is fixedly connected to the interior of the tower body (1), a support frame (3) is fixedly connected to the bottom of the tower body (1), a cover plate (18) is mounted above the drying area (2), a milk feed pipe (9) is fixedly connected to the top of the cover plate (18), a spray device (10) is fixedly connected to the bottom of the milk feed pipe (9), and a movable shaft (501) that passes through the spray device (10) is fixedly connected to the bottom of the milk feed pipe (9); The bottom of the outer side of the drying zone (2) is fixedly connected to a protective shell (512), the bottom of the output shaft (17) is equipped with a ratchet (511), one side of the ratchet (511) is fixedly connected to a push rod (506), the bottom of the drying zone (2) is provided with a T-shaped circular groove (509), the inside of the T-shaped circular groove (509) is slidably connected to a T-shaped slide plate (510), the bottom of the outer side of the drying zone (2) is fixedly connected to a connecting rod (505), the lower part of the connecting rod (505) is fixedly connected to an annular hydraulic rod (507), the tail of the annular hydraulic rod (507) is connected to a hydraulic pipe (508), the bottom of the inner wall of the drying zone (2) is equipped with a material movable plate (504), the bottom of the inner wall of the drying zone (2) is fixedly connected to a hydraulic lifting rod (503), and the outer side of the hydraulic lifting rod (503) is fixedly connected to a lifting frame (502).

2. A spray drying tower for milk powder production according to claim 1, characterized in that: The cover plate (18) is fixedly connected to a lifting end (4) above, an observation port (8) is provided above the cover plate (18), a driving motor (16) is fixedly connected to the bottom of the output shaft (17), a spiral stirring fixed plate (12) is fixedly connected to the bottom of the movable shaft (501), a material extraction pump (11) is fixedly connected to both sides of the spiral stirring fixed plate (12), spiral stirring shafts (13) are assembled at both ends of the spiral stirring fixed plate (12), the output shaft (17) passes through the tower body (1) and the drying zone (2) and is connected to the movable shaft (501), electric heating wire rods (19) are fixedly connected to the two ends and the middle of the output shaft (17), a total of three, the outer wall of the electric heating wire rod (19) is wound with an electric heating wire (15), and a heating chamber (14) is provided in the middle of the tower body (1) and the drying zone (2).

3. A spray drying tower for milk powder production according to claim 1, characterized in that: The movable shaft (501) and the output shaft (17) are connected in a snap-fit ​​manner and can be separated. When connected, they can drive the movable shaft (501) to rotate. The lifting frame (502) is fixedly connected to the material movable plate (504), and the hydraulic lifting rod (503) is fixedly connected to the drying area (2).

4. A spray drying tower for milk powder production according to claim 1, characterized in that: A scraper fixing plate (601) is fixedly connected below the spiral stirring fixing plate (12), hydraulic push blocks (603) are mounted on both ends of the scraper fixing plate (601), and hydraulic pipe 2 (604) is connected above the two hydraulic push blocks (603).

5. A spray drying tower for milk powder production according to claim 4, characterized in that: The two hydraulic pipes (604) are connected to a cylindrical hydraulic rod (605), a scraper (602) is connected below the two cylindrical hydraulic rods (605), and a protrusion (606) is fixedly connected to the inner wall of the drying area (2).

6. A spray drying tower for milk powder production according to claim 5, characterized in that: The position of the protrusions (606) corresponds to the height of the scraper fixing plate (601). The protrusions (606) have the same shape and are seventeen in total. They are evenly distributed in a 360-degree circle on the inner wall of the drying area (2).

7. A spray drying tower for milk powder production according to claim 6, characterized in that: The scraper fixing plate (601) is fixedly connected to the spiral stirring fixing plate (12) in a cross-shaped connection, and the scraper fixing plate (601) drives the spiral stirring fixing plate (12) to rotate synchronously.

8. A spray drying tower for milk powder production according to claim 1, characterized in that: Detergent water tanks (701) are fixedly connected to both sides of the scraper fixing plate (601), cleaning pipes (702) are connected to the sides of the two detergent water tanks (701), and the cleaning pipes (702) are fixedly connected to the cleaning plate (705). The inner side of the scraper (602) is fixedly connected to the cleaning plate (705), and a spray hole (703) is opened on the inner side of the cleaning plate (705), and a water outlet switch (704) is slidably connected to the outer side of the spray hole (703).

9. A spray drying tower for milk powder production according to claim 8, characterized in that: There are two cleaning plates (705) distributed on the inner side surfaces of the two scrapers (602) and are of the same size and shape.

10. A spray drying tower for milk powder production according to claim 9, characterized in that: There are seven spray holes (703) distributed on one cleaning plate (705), which are of the same size and shape and are linearly and evenly distributed downward. A water outlet switch (704) is slidably connected above each spray hole (703).

Images