A domestic food processing microalgae grinding device based on an energy-saving motor

Abstract

The application discloses a household food processing microalgae grinding device based on an energy-saving motor, and relates to the technical field of grinding and crushing equipment, which comprises a rack, a grinding bin, an end cover, a feeding bin, a rotating shaft, a motor, a fixing sleeve, a supporting arm, a pivot, a grinding assembly and a scraper. Two scrapers are arranged on the two sides of the grinding assembly. The end cover is provided with a driving assembly. When the grinding assembly rotates, the driving assembly drives the two scrapers to move along the radial direction of the grinding bin, so as to adjust the distance between the outer wall of the scraper and the inner wall of the grinding bin. In the application, the driving assembly drives the scraper to move towards the radial outside of the grinding bin, so that the distance between the scraper and the inner cavity wall of the grinding bin is reduced. With the rotation of the scraper, the scraper can drive the microalgae powder accumulated at the bottom of the grinding bin to move away from the bottom of the grinding bin. Since the scraper and the inner wall of the grinding bin have a gap, the amount of microalgae powder accumulated on the bottom wall of the inner cavity of the grinding bin is small, so that the grinding roller can fully grind the microalgae powder.

Description

Technical Field

[0001] This invention relates to the field of grinding and pulverizing equipment technology, specifically to a household food processing microalgae grinding device based on an energy-saving electric motor. Background Technology

[0002] Microalgae foods are an emerging sustainable food source that has garnered widespread attention in recent years. Microalgae foods refer to foods that use microalgae as their primary raw material or ingredient. Microalgae are tiny single-celled or multicellular algae that can only be observed under a microscope. These algae are widely distributed in nature, including freshwater and marine environments. The definition of microalgae foods can include the following aspects: Raw material source: Microalgae are used as the basic raw material; these microalgae can be naturally grown or artificially cultivated. Nutritional components: Microalgae are rich in protein, polyunsaturated fatty acids, vitamins, minerals, and various bioactive substances, therefore microalgae foods typically have high nutritional value. Diverse forms: Microalgae foods can exist in various forms, such as powders, tablets, capsules, and liquids, and can be used for direct consumption or as food additives. Wide range of uses: Microalgae foods are not only used for human consumption but also for animal feed, nutritional supplements, and the development of functional foods. Sustainable development: Microalgae grow rapidly and have relatively low environmental requirements, therefore they are considered a sustainable food source.

[0003] In microalgae food processing, it is necessary to grind the microalgae powder with a large particle size to reduce its particle size and meet the food processing requirements. Existing grinding and pulverizing equipment mainly uses a grinding disc to crush and grind the microalgae powder. Since the microalgae powder is usually piled on the grinding disc, the inner layer of the microalgae powder pile is not easily ground by the grinding disc during grinding and pulverizing, resulting in poor grinding precision and the microalgae powder particle size not meeting the requirements. Therefore, it is necessary to design a device or equipment that can fully grind the microalgae powder. Summary of the Invention

[0004] The purpose of this invention is to provide a household food processing microalgae grinding device based on an energy-saving electric motor, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A household food processing microalgae grinding device based on an energy-saving electric motor includes a frame and further includes:

[0007] The grinding chamber is installed on the frame. The grinding chamber is open at both ends and each end is connected to an end cover. A feeding chamber is connected through the top of the grinding chamber.

[0008] A rotating shaft is rotatably connected to the end cover and passes through the grinding chamber. The rotating shaft is driven to rotate by a motor mounted on the frame. A fixed sleeve is fixedly fitted to the part of the rotating shaft that passes through the grinding chamber. Support arms are fixedly connected to both ends of the fixed sleeve. The ends of the two support arms away from the fixed sleeve are rotatably connected to a pivot. A grinding assembly is installed around the pivot.

[0009] Two scrapers are connected to the periphery of the fixed sleeve, and the two scrapers are respectively located on both sides of the grinding assembly. A driving assembly is provided on the end cover. The driving assembly is used to drive the two scrapers to move radially along the grinding chamber when the grinding assembly rotates, so as to adjust the distance between the outer wall of the scraper and the inner wall of the grinding chamber.

[0010] Through the above technical solution, microalgae powder is fed into the grinding chamber from the feeding hopper. Then, the rotating shaft rotates, causing the grinding roller to rotate inside the grinding chamber, thereby crushing and grinding the microalgae powder inside the grinding chamber. In addition, when the grinding roller rotates downward, the drive component drives the scraper to move radially outward in the grinding chamber, reducing the distance between the scraper and the inner wall of the grinding chamber. As the scraper rotates, it can drive the microalgae powder accumulated at the bottom of the grinding chamber away from the bottom. Because there is a gap between the scraper and the inner wall of the grinding chamber, the amount of microalgae powder accumulated on the bottom wall of the grinding chamber is small, allowing the grinding roller to grind the microalgae powder thoroughly. When the scraper rotates upward, the distance between the scraper and the inner wall of the grinding chamber increases, causing the microalgae powder to re-accumulate on the bottom wall of the grinding chamber.

[0011] Furthermore, a fixed sleeve is fixedly connected to the periphery of the fixed sleeve, and a connecting post is telescopically inserted into the fixed sleeve. The scraper is fixedly connected to one end of the connecting post that extends out of the fixed sleeve.

[0012] Through the above technical solution, the connecting column slides within the fixed sleeve, thereby enabling the scraper to move radially along the grinding chamber.

[0013] Furthermore, the driving assembly includes a sliding pin fixed to the periphery of the connecting post. The end cap surface has an irregular groove for the sliding pin to pass through one end of the fixed sleeve and engage. The irregular groove includes an arc-shaped groove and a straight groove connected end to end. The connection end of the straight groove and the arc-shaped groove is smoothly transitioned. When the sliding pin slides from the arc-shaped groove to the straight groove, the sliding pin will drive the connecting post to move radially outward in the grinding chamber, thereby reducing the distance between the scraper and the inner wall of the grinding chamber. The periphery of the fixed sleeve has an oblong hole for the sliding pin to pass freely.

[0014] With the above technical solution, when the scraper rotates with the rotating shaft, the sliding pin slides synchronously in the irregular groove. When the sliding pin slides from the arc groove to the straight groove, it will cause the sliding pin to drive the connecting column to move in the radial outward direction of the grinding chamber, thereby reducing the distance between the outer wall of the scraper away from the rotating shaft and the inner wall of the grinding chamber. Conversely, when the sliding pin slides from the straight groove to the arc groove, it will drive the scraper to move in the opposite direction, thereby increasing the distance between the outer wall of the scraper away from the rotating shaft and the inner wall of the grinding chamber.

[0015] Furthermore, a gear is fixedly sleeved at the end of the pivot, and an annular internal gear is embedded on the surface of the end cover. The annular internal gear is coaxial with the rotating shaft and meshes with the gear.

[0016] Through the above technical solution, when the rotating shaft rotates, the gear will mesh with the inner ring gear, thereby driving the pivot to rotate. When the pivot rotates, it can drive the grinding component to rotate, so that the grinding component can grind and crush the microalgae powder in the grinding chamber.

[0017] Furthermore, a discharge chamber is connected through the bottom of the grinding chamber, and a lifting cylinder is vertically installed on the frame. The cylinder rod of the lifting cylinder is fixed to a grinding plate. The grinding plate and the inner wall of the discharge chamber are in sliding fit. After the lifting cylinder drives the grinding plate to move upward into position, the upper surface of the grinding plate and the inner wall of the grinding chamber form a grinding chamber.

[0018] Through the above technical solution, the cylinder rod of the lifting cylinder extends, thereby driving the grinding pallet to move upward, so that the microalgae powder in the grinding chamber will accumulate on the grinding pallet. Since the surface of the grinding pallet is flat, the microalgae powder will not accumulate locally on the top surface of the grinding pallet. As the sliding pin slides in the straight groove, the scraper spreads the microalgae powder evenly on the top surface of the grinding pallet. After grinding is completed, the cylinder rod of the lifting cylinder shortens, causing the grinding pallet to move downward, so that the ground microalgae powder can fall from the discharge chamber.

[0019] Furthermore, the grinding assembly includes a mounting sleeve fixedly fitted around the periphery of the pivot, on which a grinding roller is fitted. The grinding roller has an annular longitudinal section and a gap between its inner wall and the periphery of the mounting sleeve. An extension unit is provided in the gap, which is used to make the grinding roller move radially along the mounting sleeve and maintain a state of synchronous rotation around the pivot axis.

[0020] With the above technical solution, when the grinding roller rolls on the surface of the grinding tray to grind the microalgae powder, the grinding roller is subjected to a large squeezing force from the grinding tray. At this time, through the extension unit, the grinding roller can generate movement away from the grinding tray, thereby allowing the grinding roller to be buffered while ensuring the grinding effect on the microalgae powder.

[0021] Furthermore, the extension unit includes a positioning block fixed to the inner wall of the grinding roller and the periphery of the mounting sleeve. The opposing surfaces of two adjacent positioning blocks are provided with slots, and a hollow rubber column is engaged in the two adjacent slots. The inner cavity of the hollow rubber column is filled with compressed gas, and the axial direction of the hollow rubber column is parallel to the axial direction of the grinding roller.

[0022] Through the above technical solution, the compressed gas inside the hollow rubber column can cause the hollow rubber column to expand and deform, so that the hollow rubber column can extend and deform when the grinding roller is subjected to the reaction force of the grinding plate surface, thereby enabling the grinding roller to move to a certain extent and providing buffer protection for the grinding roller.

[0023] Furthermore, mounting rings are fixedly fitted at both ends of the mounting sleeve, and multiple cylindrical portions are fixedly connected to the periphery of the mounting rings. A piston is slidably engaged in the inner cavity of each cylindrical portion, and a driving pin is coaxially and fixedly passed through the end face of the piston. The driving pin slidably protrudes from the end face of the cylindrical portion, and one end of the driving pin protruding from the cylindrical portion abuts against and connects to the inner wall of the grinding roller. The outer wall of the cylindrical portion is connected to the inner cavity of the hollow rubber column through a flexible tube.

[0024] With the above technical solution, when the grinding roller moves relative to the pivot, the end of the drive pin will be squeezed by the inner wall of the grinding roller, which will cause the drive pin to move towards the inner cavity of the cylindrical part, so as to drive the piston to move. The piston squeezes the air in the inner cavity of the cylindrical part to the inner cavity of the hollow rubber column at the bottom, which increases the air pressure in the hollow rubber column, so that the grinding roller has sufficient extrusion force on the microalgae powder.

[0025] Furthermore, one end of the drive pin that protrudes from the cylindrical portion is spherical.

[0026] The above technical solution reduces the contact area between the drive pin and the inner wall of the grinding roller, thus minimizing the impact of the curved surface of the inner wall of the grinding roller on the end of the drive pin.

[0027] Furthermore, a spring is installed inside the cylindrical part, and the two ends of the spring elastically abut against the piston end face and the inner wall of the cylindrical part, respectively.

[0028] Through the above technical solution, the spring generates an elastic resisting force on the piston, so that in the initial state, the piston can drive the drive pin to move in the direction of the outer side of the cylindrical part, so that the end of the drive pin keeps in contact with the inner wall of the grinding roller.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. In this invention, microalgae powder is fed into the grinding chamber from the feeding hopper, and then rotated by the rotating shaft, causing the grinding roller to rotate inside the grinding chamber, thereby crushing and grinding the microalgae powder inside the grinding chamber. In addition, when the grinding roller rotates downward, the driving component drives the scraper to move in the radial outward direction of the grinding chamber, thereby reducing the distance between the scraper and the inner wall of the grinding chamber. As the scraper rotates, it can drive the microalgae powder accumulated at the bottom of the grinding chamber away from the bottom of the grinding chamber. Since there is a gap between the scraper and the inner wall of the grinding chamber, the amount of microalgae powder accumulated on the bottom wall of the grinding chamber is small, thereby allowing the grinding roller to grind the microalgae powder thoroughly. When the scraper rotates upward, the distance between the scraper and the inner wall of the grinding chamber increases, causing the microalgae powder to re-accumulate on the bottom wall of the grinding chamber.

[0031] 2. In this invention, when the scraper rotates with the rotating shaft, the sliding pin slides synchronously in the irregular groove. When the sliding pin slides from the arc groove to the straight groove, it will cause the sliding pin to drive the connecting column to move in the radial outward direction of the grinding chamber, thereby reducing the distance between the outer wall of the scraper away from the rotating shaft and the inner wall of the grinding chamber. Conversely, when the sliding pin slides from the straight groove to the arc groove, it will drive the scraper to move in the opposite direction, thereby increasing the distance between the outer wall of the scraper away from the rotating shaft and the inner wall of the grinding chamber.

[0032] 3. In this invention, the compressed gas inside the hollow rubber column can cause the hollow rubber column to expand and deform, so that the hollow rubber column can extend and deform when the grinding roller is subjected to the reaction force of the grinding support plate surface, thereby enabling the grinding roller to move to a certain extent and thus enabling the grinding roller to be buffered and protected. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of a household food processing microalgae grinding device based on an energy-saving electric motor according to the present invention.

[0034] Figure 2 for Figure 1 A diagram illustrating the positional relationship from another perspective;

[0035] Figure 3 This is a schematic diagram showing the positional relationship of the grinding chamber, end cap, and grinding roller after assembly in this invention;

[0036] Figure 4 for Figure 3A diagram illustrating the positional relationship from another perspective;

[0037] Figure 5 This is a schematic diagram showing the positional relationship of the support arm, grinding roller, and scraper after assembly in this invention;

[0038] Figure 6 This is a schematic diagram showing the positional relationship between the grinding roller and the mounting kit after assembly in this invention;

[0039] Figure 7 for Figure 6 A schematic diagram showing the positional relationship of the middle section after it has been cut open;

[0040] Figure 8 for Figure 7 Enlarged schematic diagram of the local structure at point A;

[0041] Figure 9 for Figure 6 Schematic diagram of the explosive decomposition of the medium structure;

[0042] Figure 10 This is a cross-sectional view of the grinding roller and the mounting kit after assembly in this invention;

[0043] Figure 11 This is a schematic diagram of the end cap structure in this invention.

[0044] The following are explanations of the reference numerals in the figures: 1. Frame; 2. Motor; 3. Feeding bin; 4. Grinding bin; 5. End cover; 6. Discharge bin; 7. Grinding tray; 8. Fixing sleeve; 9. Ring internal gear; 10. Support arm; 11. Grinding roller; 12. Scraper; 13. Fixing sleeve; 14. Arc groove; 15. Pivot; 16. Gear; 17. Sliding pin; 18. Waist-shaped hole; 19. Connecting column; 20. Straight groove; 21. Mounting sleeve; 22. Positioning block; 23. Columnar part; 24. Hollow rubber column; 25. Mounting ring; 26. Drive pin; 27. Piston; 28. Spring; 29. ​​Slot; 30. Lifting cylinder. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Please see Figures 1-11This invention provides a technical solution: a household food processing microalgae grinding device based on an energy-saving electric motor, comprising a frame 1, a hollowed-out groove on the top of the frame 1, a grinding chamber 4 installed on the top of the frame 1, the grinding chamber 4 being located within the hollowed-out groove, the grinding chamber 4 having open ends at both axial directions and connected to end caps 5 by screws, a feeding chamber 3 welded to the top of the grinding chamber 4, the interior of the feeding chamber 3 communicating with the inner cavity of the grinding chamber 4, and a discharge chamber 6 welded to the lower periphery of the grinding chamber 4, the discharge chamber 6 communicating with the inner cavity of the grinding chamber 4. Additionally, a lifting cylinder 30 is vertically mounted on the frame 1. A grinding plate 7 is welded to the end of the cylinder rod of the lifting cylinder 30. The grinding plate 7 and the inner wall of the discharge bin 6 form a sliding fit. Thus, when the cylinder rod of the lifting cylinder 30 extends, it can drive the grinding plate 7 to move upward and slide in the inner cavity of the discharge bin 6. When the cylinder rod of the lifting cylinder 30 extends to the end, the upper surface of the grinding plate 7 and the inner wall of the discharge bin 6 form a grinding cavity. The upper part of the grinding cavity is arc-shaped, and the lower part is flat.

[0047] A motor 2 is mounted on one end of the frame 1. A rotating shaft is driven by the motor 2. The rotating shaft passes through two end covers 5, and bearings are mounted on the end covers 5. The rotating shaft is mounted on the bearings so that it is rotatably connected to the end covers 5. A fixing sleeve 8 is fixedly fitted onto the part of the rotating shaft that enters the grinding chamber 4. Support arms 10 are fixedly connected to both ends of the fixing sleeve 8. The ends of the two support arms 10 away from the fixing sleeve 8 are rotatably connected to a pivot 15. A mounting sleeve 21 is fixedly fitted onto the periphery of the pivot 15. A grinding roller 11 is mounted on the mounting sleeve 21. The grinding roller 11 has an annular longitudinal section and a gap between its inner cavity wall and the periphery of the mounting sleeve 21. A positioning block 22 is fixedly connected to the inner cavity wall of the grinding roller 11 and the periphery of the mounting sleeve 21. A slot 29 is opened on the opposite face of two adjacent positioning blocks 22. A hollow rubber column 24 is engaged in the two adjacent slots 29. The inner cavity of the hollow rubber column 24 is filled with compressed gas. The axial direction of the hollow rubber column 24 is parallel to the axial direction of the grinding roller 11.

[0048] Two fixed sleeves 13 are fixedly connected to each of the two axial ends of the fixed sleeve 8. Connecting posts 19 are telescopically inserted into the fixed sleeves 13. Two connecting posts 19 located on the same side of the grinding chamber 4 protrude from one end of the fixed sleeve 13 and are jointly fixedly connected to scrapers 12. The two scrapers 12 are located on the radial sides of the grinding roller 11. Sliding pins 17 are fixedly connected to the periphery of the connecting posts 19. The end cover 5 has a shaped groove on its surface for the sliding pins 17 to protrude from one end of the fixed sleeve 13 and insert into it. The shaped groove includes… The arc-shaped groove 14 and the straight groove 20 are connected end to end. The connection end of the straight groove 20 and the arc-shaped groove 14 is smoothly transitioned. When the sliding pin 17 slides from the arc-shaped groove 14 into the straight groove 20, the sliding pin 17 will drive the connecting column 19 to move in the radial outward direction of the grinding chamber 4, so that the distance between the scraper 12 and the inner wall of the grinding chamber 4 is reduced. The fixed sleeve 13 has a waist-shaped hole 18 around its periphery for the sliding pin 17 to pass freely. The length direction of the straight groove 20 is parallel to the top surface of the grinding support plate 7.

[0049] Pivot 15 extends through support arms 10 at both ends, and gears 16 are fixedly fitted to each. An internal ring gear 9 is embedded on the surface of end cover 5. The internal ring gear 9 is coaxial with the rotating shaft and meshes with gear 16. When the rotating shaft rotates and drives the fixed sleeve 8 to rotate, gear 16 will mesh with the internal ring gear 9 to drive the pivot 15 to rotate. When the pivot 15 rotates, the mounting sleeve 21 can rotate, and then the grinding roller 11 will rotate through multiple hollow rubber columns 24. In addition, in this embodiment, multiple hollow rubber columns 24 are arranged in an array along the axial direction of the grinding roller 11.

[0050] Mounting sleeve 21 is fixedly fitted with mounting rings 25 at both ends. Multiple cylindrical parts 23 are fixedly connected to the periphery of mounting rings 25. The axial direction of cylindrical parts 23 is perpendicular to the axial direction of mounting sleeve 21, and the position of cylindrical parts 23 matches the position of hollow rubber column 24. A piston 27 is slidably engaged in the inner cavity of cylindrical parts 23. A drive pin 26 is coaxially fixedly inserted through the end face of piston 27. The drive pin 26 slides out of the end face of cylindrical part 23. One end of the drive pin 26 that passes through cylindrical part 23 abuts against the inner wall of grinding roller 11. The outer wall of cylindrical part 23 is connected to the inner cavity of hollow rubber column 24 through a hose. One end of the drive pin 26 that passes through cylindrical part 23 is ball-shaped. A spring 28 is installed in the inner cavity of cylindrical part 23. The two ends of the spring 28 elastically abut against the end face of piston 27 and the inner wall of cylindrical part 23 respectively in the direction of elastic force.

[0051] Working principle of the invention:

[0052] Microalgae powder is fed into the grinding chamber 4 from the feeding bin 3. At this time, the grinding tray 7 is driven by the lifting cylinder 30 to move upward and into position, so that the upper surface of the grinding tray 7 and the inner wall of the grinding chamber 4 form a grinding chamber. The microalgae powder falls from the grinding chamber 4 into the grinding chamber and accumulates on the upper surface of the grinding tray 7. Then the motor 2 is started, and the motor 2 drives the rotating shaft to rotate. When the rotating shaft rotates, it drives the fixed sleeve 8 to rotate. When the fixed sleeve 8 rotates, it will drive the fixed sleeve 13 to rotate, so that the sliding pin 17 slides from the arc groove 14 to the straight groove 20, so that the sliding pin 17 drives the connecting column 19 and the scraper 12 to move in the radial outward direction of the grinding chamber 4, so that the distance between the outer wall of the scraper 12 away from the rotating shaft and the inner wall of the grinding chamber 4 is reduced.

[0053] refer to Figure 3 or Figure 4When the grinding roller 11 rotates clockwise, the scraper 12 on the left side will spread the microalgae powder accumulated on the top surface of the grinding tray 7, making the thickness of the microalgae powder accumulation on the top of the grinding tray 7 smaller. At this time, when the sliding pin 17 slides in the straight groove 20, the longitudinal distance between the scraper 12 and the top surface of the grinding tray 7 is fixed, so that the scraper 12 can spread the microalgae powder on the top surface of the grinding tray 7 evenly. At the same time, as the rotating shaft rotates, the scraper 12 can drive the excess microalgae powder upward. The gear 16 meshes with the inner ring gear 9 and rotates, so that the pivot 15 drives the grinding roller 11 to rotate, thereby enabling the grinding roller 11 to crush and grind the microalgae powder on the top surface of the grinding tray 7.

[0054] Since the distance between the top surface of the grinding tray 7 and the axis of rotation is smaller than the radius of the grinding chamber 4, when the grinding roller 11 rolls on the top surface of the grinding tray 7 to crush and grind the microalgae powder, the grinding roller 11 will be subjected to a large extrusion force from the grinding tray 7. At this time, through the extension and deformation of the hollow rubber column 24, the grinding roller 11 can generate an upward movement to buffer the resistance experienced by the grinding roller 11. When the grinding roller 11 moves upward, the end of the drive pin 26 will be squeezed by the inner wall of the grinding roller 11, which will cause the drive pin 26 to move in the direction of retracting into the inner side of the cylindrical part 23. This will allow the piston 27 to squeeze the air in the inner cavity of the cylindrical part 23 into the hollow rubber column 24, thereby increasing the pressure of the compressed gas in the hollow rubber column 24 and ensuring the crushing effect of the grinding roller 11 on the microalgae powder.

[0055] After the grinding roller 11 has finished crushing the microalgae powder on the top surface of the grinding tray 7, the grinding roller 11 continues to move clockwise upwards. The sliding pin 17 will slide from the straight groove 20 into the arc groove 14, thereby causing the sliding pin 17 to drive the connecting column 19 to move closer to the rotating shaft. This increases the distance between the scraper 12 and the inner wall of the grinding chamber 4. At this time, the microalgae powder that was previously driven upwards by the left scraper 12 will move through the gap between the scraper 12 and the grinding chamber 4 to the surface of the grinding tray 7, causing the microalgae powder to re-accumulate on the top surface of the grinding tray 7. As the rotating shaft continues to rotate, the grinding roller 11 can repeatedly crush and grind the microalgae powder in the grinding chamber 4. After grinding, the cylinder rod of the lifting cylinder 30 shortens and drives the grinding tray 7 to move downward, so that the ground microalgae powder can fall from the discharge bin 6 into the external collection device. In addition, when the grinding roller 11 moves away from the grinding tray 7, under the action of the compressed gas pressure in the inner cavity of the hollow rubber column 24, the hollow rubber column 24 returns from the extended deformation state to the initial state. At the same time, the spring 28 generates an elastic pushing force on the piston 27, and the piston 27 can drive the drive pin 26 to move towards the outside of the cylindrical part 23, so that the end of the drive pin 26 keeps in contact with the inner wall of the grinding roller 11, and the air pressure in the hollow rubber column 24 returns to the initial state.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. 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 variations 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 household food processing microalgae grinding device based on an energy-saving electric motor, comprising a frame, characterized in that, Also includes: The grinding chamber is installed on the frame. The grinding chamber is open at both ends and each end is connected to an end cover. A feeding chamber is connected through the top of the grinding chamber. A rotating shaft is rotatably connected to the end cover and passes through the grinding chamber. The rotating shaft is driven to rotate by a motor mounted on the frame. A fixed sleeve is fixedly fitted to the part of the rotating shaft that passes through the grinding chamber. Support arms are fixedly connected to both ends of the fixed sleeve. The ends of the two support arms away from the fixed sleeve are rotatably connected to a pivot. A grinding assembly is installed around the pivot. Two scrapers are connected to the periphery of the fixed sleeve. The two scrapers are located on both sides of the grinding assembly. A driving assembly is provided on the end cover. The driving assembly is used to drive the two scrapers to move radially along the grinding chamber when the grinding assembly rotates, so as to adjust the distance between the outer wall of the scraper and the inner wall of the grinding chamber. The bottom of the grinding chamber is connected to the discharge chamber. A lifting cylinder is vertically installed on the frame. The cylinder rod of the lifting cylinder is fixed to the grinding plate. The grinding plate and the inner wall of the discharge chamber are in sliding fit. After the lifting cylinder drives the grinding plate to move upward into position, the upper surface of the grinding plate and the inner wall of the grinding chamber form a grinding chamber. The grinding assembly includes a mounting sleeve fixedly fitted around the periphery of a pivot. A grinding roller is fitted on the mounting sleeve. The grinding roller has an annular longitudinal section and a gap between its inner wall and the periphery of the mounting sleeve. An extension unit is provided in the gap. The extension unit is used to make the grinding roller move radially along the mounting sleeve and maintain a state of synchronous rotation around the pivot axis. The extension unit includes a positioning block fixed to the inner wall of the grinding roller and the periphery of the mounting sleeve. The opposite surfaces of two adjacent positioning blocks are provided with slots. A hollow rubber column is engaged in the two adjacent slots. The inner cavity of the hollow rubber column is filled with compressed gas. The axial direction of the hollow rubber column is parallel to the axial direction of the grinding roller. The mounting sleeve is fixedly fitted with mounting rings at both ends. Multiple cylindrical parts are fixedly connected to the periphery of the mounting rings. A piston is slidably engaged in the inner cavity of each cylindrical part. A driving pin is coaxially and fixedly passed through the end face of the piston. The driving pin slidably passes through the end face of the cylindrical part. One end of the driving pin that passes through the cylindrical part abuts against the inner wall of the grinding roller. The outer wall of the cylindrical part is connected to the inner cavity of the hollow rubber column through a flexible tube. A spring is installed inside the cylindrical part, and the two ends of the spring elastically abut against the piston end face and the inner wall of the cylindrical part, respectively.

2. The household food processing microalgae grinding device based on an energy-saving electric motor according to claim 1, characterized in that, A fixed sleeve is fixedly connected to the periphery of the fixed sleeve, and a connecting post is telescopically inserted into the fixed sleeve. The scraper is fixedly connected to one end of the connecting post that protrudes from the fixed sleeve.

3. A household food processing microalgae grinding device based on an energy-saving electric motor according to claim 2, characterized in that, The driving assembly includes a sliding pin fixed to the periphery of the connecting column. The end cap surface has an irregular groove for the sliding pin to pass through and engage with one end of the fixed sleeve. The irregular groove includes an arc-shaped groove and a straight groove connected end to end. The connection end between the straight groove and the arc-shaped groove is smoothly transitioned. When the sliding pin slides from the arc-shaped groove to the straight groove, the sliding pin will drive the connecting column to move radially outward in the grinding chamber, thereby reducing the distance between the scraper and the inner wall of the grinding chamber. The periphery of the fixed sleeve has an oblong hole for the sliding pin to pass freely.

4. A household food processing microalgae grinding device based on an energy-saving electric motor according to claim 1, characterized in that, A gear is fixedly sleeved at the end of the pivot, and an annular internal gear is embedded on the surface of the end cover. The annular internal gear is coaxial with the shaft and meshes with the gear.

5. A household food processing microalgae grinding device based on an energy-saving electric motor according to claim 1, characterized in that, The end of the drive pin that protrudes from the cylindrical part is spherical.

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