Screw type sealing mechanism for powder discharging and powder brewing machine

Abstract

The utility model discloses a screw type sealing mechanism for powder feeding and a powder brewing machine, the sealing mechanism comprises a machine body and a powder box assembly, the powder box assembly comprises a powder storage box and a guide pipe, and the guide pipe is respectively provided with a powder inlet and a powder outlet; a powder outlet screw rod is arranged in the guide pipe, and the powder outlet screw rod rotates and extrudes powder out of the powder outlet; the sealing bottom cover is arranged at the bottom of the guide pipe; a powder falling opening communicated with the powder outlet and a sealing piece are arranged on the sealing bottom cover; the sealing bottom cover is further provided with a first transmission piece. In addition, the sealing device further comprises a first driving device and a second driving device, the output end of the first driving device is in transmission with the first transmission piece, and the output end of the second driving device is in transmission with the sealing piece. Therefore, the lower plane type sealing is adopted, so that the opening angle between the powder outlet and the powder falling opening is 180 degrees, and powder falling is smoother; in addition, the second driving device is independently arranged to drive the sealing piece to rotate, and the overall structure of the powder box assembly is simplified.

Description

Technical Field

[0001] This utility model relates to the field of powder preparation technology, specifically to a screw-type powder dispensing sealing mechanism and a powder preparation machine. Background Technology

[0002] This section provides only background information related to this application to enable those skilled in the art to understand this application more thoroughly and accurately, and it is not necessarily prior art.

[0003] Milk powder is a common food, especially for infants and the elderly. However, there are many problems with the current methods of preparing milk powder: First, it cannot be measured, resulting in inconsistent milk concentration each time it is prepared. This is detrimental to infants; too much milk powder can cause indigestion, while too little can lead to malnutrition. Second, whether canned or bagged, the lid must be opened each time the milk powder is used, exposing it to air multiple times, which can cause environmental pollution and shorten its shelf life. Third, the preparation process is complicated, time-consuming, and laborious.

[0004] The advent of automatic formula makers has made preparing formula much easier, adding convenience to people's lives. Currently available automatic formula makers only require users to pre-fill the formula powder and water; the machine then automatically adds water and formula powder according to the pre-set ratio and mixes them, greatly improving efficiency and ensuring quality. To prevent steam generated during the formula preparation process from entering the powder container and causing it to become damp and spoil, a sealing cover is installed at the powder outlet to seal the powder and maintain its quality during storage.

[0005] Most automatic formula dispensers use a screw-type dispensing system, which typically achieves sealing in the following ways: The first method involves placing the powder outlet at a non-opening position on the screw tube. A sealing sleeve is fitted onto the screw tube, and the same power source as the metering device drives the sealing sleeve to rotate, opening or closing the outlet, as in the fully automatic formula dispenser disclosed in application number 201510825599.7. The second method involves placing the powder outlet at the opening of the screw tube, with a sealing cap hinged there. A separate power source rotates the sealing cap to open or close the outlet. For the first sealing structure, because the sealing sleeve must completely enclose the outlet, the opening angle cannot be 180 degrees, making it prone to blockage and uneven dispensing. For the second sealing structure, the sealing cap is prone to powder spillage when sealing or opening the outlet. Furthermore, having an independent drive mechanism at the bottom of the powder container makes the container structure overly complex, making disassembly, cleaning, and maintenance inconvenient. Utility Model Content

[0006] To overcome the shortcomings of the prior art, this utility model provides a screw-type powder dispensing sealing mechanism and a powder brewing machine. A sealing bottom cover is installed at the bottom of the guide tube, with a powder outlet overlapping and communicating with the powder outlet. A sealing element is movably installed at the bottom of the sealing bottom cover to open or close the powder outlet. This design, using a lower-plane sealing method, not only ensures that the opening angle between the powder outlet and the powder outlet is 180 degrees, thus making powder dispensing smoother and less prone to clogging, but also provides better sealing performance, significantly reducing the risk of powder leakage. Furthermore, by separately installing a second drive device on the machine body to rotate the sealing element, the overall structure of the powder box assembly is simplified, making disassembly, cleaning, and maintenance more convenient. At the same time, its transmission and coordination relationships are simpler, the precision requirements are lower, and the control logic is also simpler.

[0007] The technical solution adopted by this utility model to solve its problem is:

[0008] A screw-type powder dispensing sealing mechanism includes a body with a storage chamber and a powder box assembly detachably placed within the storage chamber, wherein:

[0009] The powder box assembly includes:

[0010] (a) A powder storage box for storing powder;

[0011] (b) A guide tube provided at the bottom of the powder storage box, wherein the lower part of the guide tube is provided with a powder outlet and the upper part is provided with a powder inlet communicating with the powder storage box.

[0012] (c) A powder discharge screw disposed inside the guide tube, the powder discharge screw rotating and extruding powder from the powder outlet of the guide tube;

[0013] (d) A sealing bottom cover is provided at the bottom of the guide tube, and a powder discharge port is provided on the sealing bottom cover, which overlaps and communicates with the powder outlet of the guide tube.

[0014] (e) A seal that is movable at the bottom of the sealing base cover;

[0015] (f) A first transmission component that passes through the sealed bottom cover and is used to drive the powder discharge screw to rotate;

[0016] In addition, it also includes a first drive device and a second drive device disposed in the body of the machine. The output end of the first drive device is drivenly connected to a second drive member. The second drive member is at least partially located in the storage cavity and is used to drive the powder discharge screw to rotate in conjunction with the first drive member. The output end of the second drive device is drivenly connected to a third drive member. The third drive member is at least partially located in the storage cavity and is used to drive the sealing member to open or close the powder discharge port.

[0017] The machine body is also equipped with a controller, which controls the operation of the first drive device and the second drive device through an electrical connection.

[0018] Furthermore, when powder needs to be dispensed, the sealing element actuates before the powder dispensing screw to open the powder outlet, and then the powder dispensing screw rotates to dispense powder; when sealing is required, the powder dispensing screw actuates before the sealing element to stop dispensing powder, and then the sealing element actuates to close the powder outlet.

[0019] Furthermore, the sealing element is a first sealing cover plate rotatably disposed at the bottom of the sealing base and coaxially disposed with the first transmission member, wherein:

[0020] The first sealing cover includes a first cover body and a first protruding plate extending from the edge of the first cover body. When the first sealing cover is rotated, the first protruding plate can cover or expose the powder outlet to close or open the powder outlet. The bottom surface of the sealing bottom cover has a first sealing surface that matches the top surface of the first protruding plate, and the powder outlet is located on the first sealing surface.

[0021] The third transmission component is a first transmission disc located partially inside the storage cavity and connected to the first sealing cover plate. The output end of the second drive device is connected to a first gear, and the bottom of the first transmission disc is provided with a second gear that meshes with the first gear.

[0022] Furthermore, the sealing element is a second sealing cover plate rotatably disposed at the bottom of the sealing base and not coaxially disposed with the first transmission member, wherein:

[0023] The second sealing cover includes a second cover body and a second protruding plate extending from the edge of the second cover body. When the second sealing cover is rotated, the second protruding plate can cover or expose the powder outlet to close or open the powder outlet. The bottom surface of the sealing bottom cover has a second sealing surface that matches the top surface of the second protruding plate, and the powder outlet is located on the second sealing surface.

[0024] The third transmission component is a second transmission disc located partially within the storage cavity and connected to the second sealing cover and the output end of the second driving device.

[0025] Furthermore, the sealing element is a third sealing cover plate slidably disposed at the bottom of the sealing base cover. The third sealing cover plate can cover or expose the powder discharge port to open or close the powder discharge port, wherein:

[0026] The bottom of the sealing cover is provided with a sliding groove for the third sealing cover plate to slide. The bottom surface of the sliding groove forms a third sealing surface that is adapted to the top surface of the third sealing cover plate. The powder discharge port is located on the third sealing surface.

[0027] The third transmission component is a transmission plate that is connected to the third sealing cover plate. The output end of the second drive device is connected to a third gear. The transmission plate is provided with a rack that meshes with the third gear.

[0028] Furthermore, a removable inspection cover is provided at one end of the guide tube near the powder outlet.

[0029] Furthermore, the powder storage box is equipped with a rotatable guide impeller, which is used to drive the powder to rotate and enter the interior of the guide tube through the powder inlet on the guide tube;

[0030] Both the powder discharge screw and the guide impeller are connected to the first transmission component.

[0031] Furthermore, the first transmission member includes a first transmission shaft passing through the sealed bottom cover, wherein:

[0032] The upper end of the first drive shaft is provided with a fourth gear, and one end of the powder discharge screw is provided with a fifth gear that meshes with the fourth gear.

[0033] The upper end of the first drive shaft is also provided with a sixth gear, and the bottom of the guide impeller is provided with a seventh gear. The sixth gear and the seventh gear are meshed and driven by a gear rod.

[0034] The lower end of the first drive shaft is provided with a third drive disc that is in transmission cooperation with the second drive component.

[0035] Furthermore, the second transmission member includes a second transmission shaft, wherein:

[0036] The upper end of the second drive shaft is provided with a fourth drive disc partially located in the storage cavity. The third drive disc is provided with a plurality of slots on its ring, and the fourth drive disc is provided with a plurality of claws that engage with the plurality of slots to achieve a transmission connection.

[0037] The lower end of the second drive shaft is connected to the output end of the first drive device.

[0038] In addition, this utility model also provides a powder brewing machine, including the above-mentioned screw-type powder dispensing sealing mechanism.

[0039] In summary, the screw-type powder dispensing sealing mechanism and powder brewing machine provided by this utility model have the following beneficial effects:

[0040] (1) The screw-type powder dispensing sealing mechanism of this utility model has a sealing bottom cover at the bottom of the guide tube. The sealing bottom cover has a powder discharge port that overlaps and communicates with the powder outlet. A sealing element is movably installed at the bottom of the sealing bottom cover to open or close the powder discharge port. With this design, the opening angle between the powder outlet and the powder discharge port is set at 180 degrees, which makes the powder dispensing smoother and less prone to clogging. At the same time, its sealing performance is better, which can greatly reduce the risk of powder leakage. In addition, by setting a second driving device separately on the machine body to drive the sealing element to rotate, the overall structure of the powder box assembly is simplified, making it easier to disassemble, clean and maintain. At the same time, its transmission and matching relationship is simpler, the matching accuracy requirement is lower, and the control logic is also simpler.

[0041] (2) The screw-type powder dispensing sealing mechanism of this utility model has a time-dispatch mechanism for powder dispensing and sealing. When making milk, the sealing element moves before the powder dispensing screw and opens the powder dispensing port. When sealing, the sealing element moves after the powder dispensing screw to seal the powder dispensing port. This can reduce the amount of flying powder generated during the opening or sealing of the powder dispensing port, making its structure simpler and more reliable. Attached Figure Description

[0042] Figure 1 An exploded view of the screw-type powder feeding sealing mechanism of this utility model;

[0043] Figure 2 for Figure 1 An illustration of the explosion from another perspective;

[0044] Figure 3 This is an exploded view of the powder box assembly in the screw-type powder feeding sealing mechanism of this utility model;

[0045] Figure 4 This is a cross-sectional schematic diagram of the first transmission component in the powder box assembly of this utility model;

[0046] Figure 5 for Figure 3 An illustration of the explosion from another perspective;

[0047] Figure 6 This is a cross-sectional schematic diagram of the powder box assembly in the screw-type powder feeding sealing mechanism of this utility model;

[0048] Figure 7 This is an exploded view of part of the screw-type powder feeding sealing mechanism of this utility model;

[0049] Figure 8 This is a cross-sectional schematic diagram of a portion of the screw-type powder feeding sealing mechanism of this utility model;

[0050] Figure 9 This is an exploded view of another embodiment of the screw-type powder feeding sealing mechanism of this utility model;

[0051] Figure 10 for Figure 9 An illustration of the explosion from another perspective;

[0052] Figure 11 This is an exploded view of part of the screw-type powder feeding sealing mechanism according to another embodiment of the present invention;

[0053] Figure 12 This is a cross-sectional schematic diagram of a portion of the body of a screw-type powder feeding sealing mechanism according to another embodiment of the present invention.

[0054] The meanings of the reference numerals in the attached figures are as follows:

[0055] 1. Powder box assembly; 11. Powder storage box; 111. Powder storage cavity; 112. Guide tube; 1121. Powder outlet; 1122. Powder inlet; 12. Sealing bottom cover; 121. Powder discharge port; 13. First sealing cover plate; 131. First cover plate body; 1311. First locking hole; 132. First protruding plate; 14. First transmission component; 141. First transmission shaft; 142. Fourth gear; 143. Sixth gear; 144. Third transmission disc; 1441. Slot; 15. Gear rod; 16. Guide impeller; 161. Seventh gear; 17. Outlet 1. Powder screw; 171. Fifth gear; 172. Inspection cover; 18. Powder box top cover; 19. Third sealing cover plate; 191. Second locking hole; 2. Machine body; 21. Storage chamber; 22. Second transmission component; 221. Second transmission shaft; 222. Fourth transmission disc; 223. Claw; 23. First transmission disc; 231. First locking block; 232. Second gear; 24. First gear; 25. First drive device; 26. Second drive device; 27. Shell plate; 271. Slide groove; 28. Transmission plate; 281. Second locking block; 29. ​​Third gear. Detailed Implementation

[0056] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0057] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0059] Example 1

[0060] See Figure 1-8 This utility model provides a screw-type powder dispensing sealing mechanism, including a body 2 with a storage chamber 21 and a powder box assembly 1 detachably placed in the storage chamber 21. The powder box assembly 1 includes a powder storage box 11, which has a powder storage chamber 111 for storing powder. A guide tube 112 is provided at the bottom of the powder storage box 11. Preferably, the guide tube 112 is integrally formed with the powder storage box 11. A powder outlet 1121 is provided at the lower part of the guide tube 112, and a powder inlet 1122 communicating with the powder storage chamber 111 is provided at the upper part. A powder dispensing screw 17 is provided inside the guide tube 112. The powder dispensing screw 17 rotates and squeezes the powder out of the powder outlet 1121 of the guide tube 112.

[0061] In addition, the powder box assembly 1 also includes a sealing bottom cover 12 disposed at the bottom of the guide tube 112. The sealing bottom cover 12 is provided with a powder discharge port 121, which overlaps with and communicates with the powder outlet 1121 of the guide tube 112. Preferably, the opening angles of the powder discharge port 121 and the powder outlet 1121 are both set at 180 degrees. The bottom of the sealing bottom cover 12 is also provided with a movable sealing member, which can be moved to open or close the powder discharge port 121. The sealing bottom cover 12 is also provided with a first transmission member 14 for driving the powder dispensing screw 17 to rotate.

[0062] Furthermore, the machine body 2 also includes a first drive unit 25 and a second drive unit 26 disposed within the machine body 2. The output end of the first drive unit 25 is drivenly connected to a second transmission member 22, which is at least partially located within the storage chamber 21 and is used to drive the powder discharge screw 17 to rotate in conjunction with the first transmission member 14. The output end of the second drive unit 26 is drivenly connected to a third transmission member, which is at least partially located within the storage chamber 21 and is used to drive the sealing member to open or close the powder discharge port 121. The machine body 2 also includes a controller, which controls the operation of the first drive unit 25 and the second drive unit 26 via an electrical connection.

[0063] Therefore, by setting a sealing bottom cover 12 at the bottom of the guide tube 112, and having a powder discharge port 121 that overlaps with and communicates with the powder outlet 1121, and a sealing element movably installed at the bottom of the sealing bottom cover 12 to open or close the powder discharge port, this design, by using a lower plane seal, not only ensures that the opening angle of the powder outlet 1121 and the powder discharge port 121 is set at 180 degrees, thus making the powder discharge smoother and less prone to clogging; but also provides better sealing performance, greatly reducing the risk of powder leakage. In addition, by separately setting a second drive device 26 on the body 2 to drive the sealing element to rotate, the overall structure of the powder box assembly 1 is simplified, making it easier to disassemble, clean, and maintain. At the same time, its transmission and engagement relationship is simpler, the engagement precision requirement is lower, and the control logic is also simpler.

[0064] The body 2 also includes a shell plate 27, on which the first drive device 25, the second drive device 26, the second transmission component 22 and the third transmission component are all mounted.

[0065] In this embodiment of the utility model, both the first driving device 25 and the second driving device 26 are drive motors, and both are electrically connected to the controller.

[0066] In this embodiment of the utility model, a powder box top cover 18 is also included, which covers the top of the powder storage box 11 to seal the powder storage cavity 111.

[0067] Furthermore, the controller controls the first drive device 25 and the second drive device 26 to operate sequentially, causing the seal and the powder discharge screw 17 to operate differentially. Specifically, when powder needs to be dispensed, the seal operates before the powder discharge screw 17 to open the powder outlet 121, and then the powder discharge screw 17 rotates to dispense powder; when sealing is required, the powder discharge screw 17 operates before the seal to pause rotation to stop dispensing powder, and then the seal operates to close the powder outlet 121.

[0068] With this design, the powder dispensing and sealing are timed out. When preparing milk, the seal operates before the powder dispensing screw 17 and opens the powder outlet 121. When sealing, the seal operates after the powder dispensing screw 17 to seal the powder outlet 121. This reduces the amount of powder flying during the opening or sealing of the powder outlet 121, making the structure simpler and more reliable.

[0069] See also Figure 3-6 The sealing element is a first sealing cover plate 13 rotatably disposed at the bottom of the sealing bottom cover 12 and coaxially disposed with the first transmission member 14. Specifically, the first sealing cover plate 13 includes a first cover plate body 131 and a first protruding plate portion 132 extending from the edge of the first cover plate body 131. When the first sealing cover plate 13 is rotated, the first protruding plate portion 132 can be rotated to cover or expose the powder outlet 121, thereby closing or opening the powder outlet 121.

[0070] The bottom surface of the sealing bottom cover 12 is formed with a first sealing surface that is adapted to the top surface of the first protruding plate portion 132, and the powder outlet 121 is located on the first sealing surface. In this embodiment, the first sealing surface is the bottom surface of the sealing bottom cover 12 and is flat, and the top surface of the first protruding plate portion 132 is also flat. This arrangement ensures that when the first protruding plate portion 132 rotates to the powder outlet 121, it can completely seal the powder outlet 121, thereby ensuring the sealing effect.

[0071] Of course, in other embodiments, the first sealing surface can also be other shaped surfaces, such as arc surfaces, conical surfaces, etc., as long as the top surface of the first convex plate portion 132 is compatible with its shape, and there are no restrictions here.

[0072] The third transmission component is a first transmission disc 23 located partially inside the storage cavity and connected to the first sealing cover plate 13. The first transmission disc 23 is provided with a first locking block 231, and the first sealing cover plate 13 is provided with a first locking hole 1311 that engages with the first locking block 231 to achieve transmission connection. In addition, a first gear 24 is driven and sleeved on the output shaft of the second drive device 26, and a second gear 232 that meshes with the first gear 24 is provided on the first transmission disc 23.

[0073] Therefore, when the second drive device 26 drives the first gear 24 to rotate, it can drive the first transmission disk 23 to rotate through its meshing transmission with the second gear 232, and then drive the first sealing cover plate 13 to rotate through the snap-fit ​​cooperation between the first locking block 231 and the first locking hole 1311, thereby realizing the opening or closing of the powder discharge port.

[0074] It should be noted that in other embodiments, the sealing element may also be a second sealing cover plate rotatably disposed at the bottom of the sealing bottom cover 12 and not coaxially disposed with the first transmission member 14. Specifically, the second sealing cover plate includes a second cover plate body and a second protruding plate portion extending from the edge of the second cover plate body. When the second sealing cover plate is rotated, the second protruding plate portion can cover or expose the powder discharge port 121 to close or open the powder discharge port 121. The bottom surface of the sealing bottom cover 12 forms a second sealing surface adapted to the top surface of the second protruding plate portion, and the powder discharge port 121 is located on the second sealing surface. The third transmission member is a second transmission disc partially located in the storage cavity and connected to the second sealing cover plate and the output end of the second driving device 26 respectively.

[0075] Therefore, when the second drive device 26 drives the second transmission disc to rotate, the second transmission disc can drive the second sealing cover plate to rotate, thereby opening or closing the powder discharge port. Thus, when the second sealing cover plate is used as the sealing element, the first gear 24 and the second gear 232 can be omitted, making the structure simpler while achieving the same sealing effect.

[0076] See also Figure 3-6 A removable inspection cover 172 is provided at one end of the guide tube 112 near the powder outlet 1121, which facilitates the maintenance and replacement of the powder outlet screw 17. A fifth gear 171 is provided at the other end of the guide tube 112, and a fourth gear 142 that meshes with the fifth gear 171 is provided at the upper end of the first transmission member 14.

[0077] Specifically, the first transmission component 14 includes a first transmission shaft 141 passing through the sealed bottom cover 12, and a fourth gear 142 sleeved on the upper end of the first transmission shaft 141; in addition, a rotatable guide impeller 16 is also provided in the powder storage cavity 111 of the powder storage box 11. The guide impeller 16 is used to drive the powder to rotate and enter the interior of the guide tube 112 through the powder inlet 1122 on the guide tube 112; a seventh gear 161 is provided at the bottom of the guide impeller 16, and a sixth gear 143 is also sleeved on the upper end of the first transmission shaft 141. The sixth gear 143 and the seventh gear 161 are meshed and transmitted with each other through a gear rod 15.

[0078] Therefore, when the first drive shaft 141 is driven to rotate, the fourth gear 142 and the sixth gear 143 can be driven to rotate simultaneously. When the fourth gear 142 rotates, it can drive the fifth gear 171 meshing with it to rotate, thereby realizing the rotation of the powder discharge screw 17 to achieve powder discharge. When the sixth gear 143 rotates, it can realize the rotation of the guide impeller 16 through the rotation of the gear rod 15 meshing with it and the seventh gear 161.

[0079] Furthermore, the lower end of the first drive shaft 141 is provided with a third drive disc 144 that drives and cooperates with the second drive member 22. Specifically, the second drive member 22 includes a second drive shaft 221, the upper end of which is provided with a fourth drive disc 222 partially located in the storage cavity 21. The third drive disc 144 is provided with a plurality of slots 1441, and the fourth drive disc 222 is provided with a plurality of claws 223 that engage with the slots 1441 to achieve a transmission connection. The lower end of the second drive shaft 221 is connected to the output shaft of the first drive device 25 through a bushing.

[0080] Therefore, when the first drive device 25 drives the second transmission shaft 221 to rotate, it can drive the fourth transmission disk 222 to rotate, and through the engagement of several claws 223 and several slots 1441, it can drive the third transmission disk 144 to rotate, thereby driving the first transmission shaft 141 to rotate.

[0081] Example 2

[0082] See Figure 9-12 The difference between the powder-feeding sealing mechanism of this utility model and that of Embodiment 1 lies in the structure of its sealing element. In this embodiment, the sealing element is a third sealing cover plate 19 that is slidably disposed at the bottom of the sealing bottom cover 12. The third sealing cover plate 19 can cover or expose the powder-feeding port 121 to open or close the powder-feeding port 121.

[0083] Specifically, the bottom of the sealing cover 12 is provided with a sliding groove for the third sealing cover 19 to slide. The bottom surface of the sliding groove forms a third sealing surface that matches the top surface of the third sealing cover 19. The powder outlet 121 is located on the third sealing surface. In this embodiment, the third sealing surface is a plane, and the top surface of the third sealing cover 19 is also a plane. The third transmission component is a transmission plate 28. The top of the transmission plate 28 is provided with a second locking block 281, and the bottom of the third sealing cover 19 is provided with a second locking hole 191. The second locking block 281 is inserted into the second locking hole 191 to achieve transmission connection. The output end of the second drive device 26 is connected to a third gear 29. The transmission plate 28 is provided with a rack that meshes with the third gear 29.

[0084] Therefore, when the second drive device 26 drives the third gear 29 to rotate, it can drive the transmission plate 28 to slide through its meshing with the rack, thereby driving the third sealing cover plate 19 to slide to open or close the powder discharge port.

[0085] In this embodiment of the utility model, the shell plate 27 is provided with a sliding groove 271 for the transmission plate 28 to slide.

[0086] Example 3

[0087] In addition, this utility model also provides a powder brewing machine, including the screw-type powder dispensing sealing mechanism of the above embodiment one or two. In this embodiment of the utility model, the powder brewing machine is a milk powder brewing machine, and the powder storage box 11 stores milk powder inside. Of course, in other embodiments, the powder brewing machine can also be a coffee brewing machine, a soy milk brewing machine, or other powder-based beverage equipment. As long as the beverage equipment involves powder brewing, it is within the protection scope of this application and is not limited here.

[0088] In summary, the screw-type powder dispensing sealing mechanism and powder brewing machine provided by this utility model have the following beneficial effects:

[0089] (I) The screw-type powder dispensing sealing mechanism of this utility model has a sealing bottom cover 12 at the bottom of the guide tube 112. The sealing bottom cover 12 has a powder discharge port 121 that overlaps with and communicates with the powder outlet 1121. A sealing element is movably installed at the bottom of the sealing bottom cover 12 to open or close the powder discharge port 121. With this configuration and the use of a lower plane seal, the opening angle between the powder outlet 1121 and the powder discharge port 121 is set at 180 degrees, which makes the powder dispensing smoother and less prone to clogging. At the same time, its sealing performance is better, which can greatly reduce the risk of powder leakage. In addition, by separately setting a second drive device 26 on the machine body 2 to drive the sealing element to rotate, the overall structure of the powder box assembly 1 is simplified, making it easier to disassemble, clean and maintain. At the same time, its transmission and coordination relationship is simpler, the coordination accuracy requirement is lower, and the control logic is also simpler.

[0090] (II) The screw-type powder dispensing sealing mechanism of this utility model has a time-staggered powder dispensing and sealing. When making milk, the sealing element acts before the powder dispensing screw 17 and opens the powder dispensing port 121. When sealing, the sealing element acts after the powder dispensing screw 17 to seal the powder dispensing port 121. This can reduce the flying powder generated during the opening or sealing of the powder dispensing port 121, making its structure simpler and more reliable.

[0091] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0092] It should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0093] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0094] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A screw-type powder feeding sealing mechanism, characterized in that, It includes a body with a storage cavity and a powder box assembly that can be detachably placed within the storage cavity, wherein: The powder box assembly includes: (a) A powder storage box for storing powder; (b) A guide tube provided at the bottom of the powder storage box, wherein the lower part of the guide tube is provided with a powder outlet and the upper part is provided with a powder inlet communicating with the powder storage box; (c) A powder discharge screw disposed inside the guide tube, the powder discharge screw rotating and extruding powder from the powder outlet of the guide tube; (d) A sealing bottom cover is provided at the bottom of the guide tube, and a powder discharge port is provided on the sealing bottom cover, which overlaps and communicates with the powder outlet of the guide tube; (e) A seal that is movable at the bottom of the sealing base; (f) A first transmission component that passes through the sealed bottom cover and is used to drive the powder discharge screw to rotate; In addition, it also includes a first drive device and a second drive device disposed in the body of the machine. The output end of the first drive device is drivenly connected to a second drive member. The second drive member is at least partially located in the storage cavity and is used to drive the powder discharge screw to rotate in conjunction with the first drive member. The output end of the second drive device is drivenly connected to a third drive member. The third drive member is at least partially located in the storage cavity and is used to drive the sealing member to open or close the powder discharge port. The machine body is also equipped with a controller, which controls the operation of the first drive device and the second drive device through an electrical connection.

2. The screw-type powder feeding sealing mechanism according to claim 1, characterized in that, When powder needs to be dispensed, the sealing element actuates before the powder dispensing screw to open the powder outlet, and then the powder dispensing screw rotates to dispense powder; when sealing is required, the powder dispensing screw actuates before the sealing element to stop dispensing powder, and then the sealing element actuates to close the powder outlet.

3. A screw-type powder feeding sealing mechanism according to claim 1 or 2, characterized in that, The sealing element is a first sealing cover plate that is rotatably disposed at the bottom of the sealing base and coaxially disposed with the first transmission element, wherein: The first sealing cover includes a first cover body and a first protruding plate extending from the edge of the first cover body. When the first sealing cover is rotated, the first protruding plate can cover or expose the powder outlet to close or open the powder outlet. The bottom surface of the sealing bottom cover has a first sealing surface that matches the top surface of the first protruding plate, and the powder outlet is located on the first sealing surface. The third transmission component is a first transmission disc located partially inside the storage cavity and connected to the first sealing cover plate. The output end of the second drive device is connected to a first gear, and the bottom of the first transmission disc is provided with a second gear that meshes with the first gear.

4. A screw-type powder feeding sealing mechanism according to claim 1 or 2, characterized in that, The sealing element is a second sealing cover plate that is rotatably disposed at the bottom of the sealing base and is not coaxially disposed with the first transmission element, wherein: The second sealing cover includes a second cover body and a second protruding plate extending from the edge of the second cover body. When the second sealing cover is rotated, the second protruding plate can cover or expose the powder outlet to close or open the powder outlet. The bottom surface of the sealing bottom cover has a second sealing surface that matches the top surface of the second protruding plate, and the powder outlet is located on the second sealing surface. The third transmission component is a second transmission disc located partially within the storage cavity and connected to the second sealing cover and the output end of the second driving device.

5. A screw-type powder feeding sealing mechanism according to claim 1 or 2, characterized in that, The sealing element is a third sealing cover plate that is slidably disposed at the bottom of the sealing base cover. The third sealing cover plate can cover or expose the powder discharge port to open or close the powder discharge port, wherein: The bottom of the sealing cover is provided with a sliding groove for the third sealing cover plate to slide. The bottom surface of the sliding groove forms a third sealing surface that is adapted to the top surface of the third sealing cover plate. The powder discharge port is located on the third sealing surface. The third transmission component is a transmission plate that is connected to the third sealing cover plate. The output end of the second drive device is connected to a third gear. The transmission plate is provided with a rack that meshes with the third gear.

6. A screw-type powder feeding sealing mechanism according to claim 1 or 2, characterized in that, A removable inspection cover is provided at one end of the guide tube near the powder outlet.

7. A screw-type powder feeding sealing mechanism according to claim 1 or 2, characterized in that, The powder storage box is equipped with a rotatable guide impeller, which drives the powder to rotate and enter the guide tube through the powder inlet on the guide tube. Both the powder discharge screw and the guide impeller are connected to the first transmission component.

8. A screw-type powder feeding sealing mechanism according to claim 7, characterized in that, The first transmission component includes a first transmission shaft passing through the sealed bottom cover, wherein: The upper end of the first drive shaft is provided with a fourth gear, and one end of the powder discharge screw is provided with a fifth gear that meshes with the fourth gear. The upper end of the first drive shaft is also provided with a sixth gear, and the bottom of the guide impeller is provided with a seventh gear. The sixth gear and the seventh gear are meshed and driven by a gear rod. The lower end of the first drive shaft is provided with a third drive disc that is in transmission cooperation with the second drive component.

9. A screw-type powder feeding sealing mechanism according to claim 8, characterized in that, The second transmission component includes a second transmission shaft, wherein: The upper end of the second drive shaft is provided with a fourth drive disc partially located in the storage cavity. The third drive disc is provided with a plurality of slots on its ring, and the fourth drive disc is provided with a plurality of claws that engage with the plurality of slots to achieve a transmission connection. The lower end of the second drive shaft is connected to the output end of the first drive device.

10. A powder brewing machine, characterized in that, Includes a screw-type powder feeding sealing mechanism as described in any one of claims 1-9.

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