Powder outlet device and automatic brewing machine

Abstract

This utility model discloses a powder dispensing device, comprising: a housing; a powder hopper rotatably disposed within the housing; a powder dispensing screw directly or indirectly mounted on the housing, disposed within the powder hopper and rotatable relative to the powder hopper while being fixed relative to the housing; and a powder hopper driving mechanism connected to the powder hopper for driving the powder hopper to rotate relative to the powder dispensing screw housing. In this powder dispensing device, there is no need to drive the powder dispensing screw; the powder hopper can be directly driven to rotate. Compared to driving the powder dispensing screw, driving the powder hopper directly allows for a more convenient arrangement of the powder hopper driving mechanism, resulting in a simpler and more convenient overall structural layout, thus simplifying the powder dispensing device. Therefore, this powder dispensing device effectively solves the problem of complex structures in powder dispensing devices. This utility model also discloses an automatic brewing machine including the above-mentioned powder dispensing device.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and more specifically, to a powder dispensing device, and also to an automatic brewing machine including the above-mentioned powder dispensing device. Background Technology

[0002] In daily life, many infants are fed formula. Preparing formula typically involves manually opening the lid, repeatedly taking out the powder, placing the scoop, and closing the lid, which is inconvenient for caregivers. Therefore, automatic powder dispensing devices are becoming increasingly popular. These devices usually consist of a powder hopper, a screw feeder inside the hopper, and a motor at the bottom of the hopper that drives the screw feeder. However, powder often scatters and contaminates the motor and other components at the outlet. Furthermore, the motor's location at the bottom of the hopper complicates the outlet area, increasing cleaning difficulty, promoting bacterial growth, and potentially affecting food safety.

[0003] Furthermore, the screw feeder (powder discharge screw) is located inside the milk powder hopper, and it would be inconvenient to drive it from the outside, so a relatively complex structure is required.

[0004] In conclusion, how to effectively solve the problem of complex structure of powder discharge device is an urgent problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the first objective of this utility model is to provide a powder dispensing device that can effectively solve the problem of complex structure of powder dispensing devices. The second objective of this utility model is to provide an automatic brewing machine that includes the above-mentioned powder dispensing device.

[0006] To achieve the first objective mentioned above, this utility model provides the following technical solution:

[0007] A powder dispensing device includes: a housing; a powder hopper rotatably disposed on the housing; a powder dispensing screw directly or indirectly mounted on the housing, disposed in the powder hopper and rotatable relative to the powder hopper and fixed relative to the housing; and a powder hopper driving mechanism connected to the powder hopper for driving the powder hopper to rotate relative to the powder dispensing screw housing.

[0008] The above-mentioned powder discharging device operates as follows: The powder discharging screw is fixed relative to the outer casing, while the powder hopper is rotatably mounted on the casing. The powder hopper drive mechanism drives the powder hopper to rotate relative to the outer casing, achieving relative rotation between the powder hopper and the powder discharging screw. This relative rotation between the powder discharging screw and the powder hopper results in the powder discharging screw pushing the powder material out of the powder hopper. In this powder discharging device, there is no need to drive the powder discharging screw; the powder hopper can be directly driven to rotate. Compared to driving the powder discharging screw, driving the powder hopper allows for a more convenient setup of the powder hopper drive mechanism, resulting in a simpler and more convenient overall structural layout, thus simplifying the powder discharging device. Therefore, the above-mentioned powder discharging device effectively solves the problem of complex structures in powder discharging devices.

[0009] In some technical solutions, one end of the powder hopper is provided with a powder outlet, and the other end of the powder hopper is provided with an inlet and a powder outlet, and the powder hopper drive mechanism is located at the end near the inlet of the powder hopper.

[0010] In some technical solutions, the powder hopper drive mechanism of the drive device includes: a motor; a drive gear driven to rotate by the motor; and a driven gear sleeved on the powder hopper and meshing with the drive gear, and fixed relative to the powder hopper.

[0011] In some technical solutions, an outer cylinder is also included, which is sleeved on the outside of the powder hopper and separated from the powder hopper by a specified gap; the powder hopper is detachably disposed on the outer cylinder, and the driven gear is located in the gap between the powder hopper and the outer cylinder.

[0012] In some technical solutions, a cover for covering the inlet of the powder hopper is also included; the cover is installed on the outer shell, and the powder discharge screw is detachably installed on the cover.

[0013] In some technical solutions, a cover for covering the inlet of the powder hopper is also included, the powder discharge screw is fixedly installed on the cover, and the cover is detachably installed on the outer shell.

[0014] In some technical solutions, the hopper cover is provided with a first coupler, and the top of the powder discharge screw is provided with a second coupler, with the first coupler and the second coupler being anti-rotatingly coupled together; or the hopper cover is provided with a first coupler and a magnetic attraction structure for magnetically fixing the first coupler, and the top of the powder discharge screw is provided with a second coupler, with the first coupler and the second coupler being anti-rotatingly coupled together.

[0015] In some technical solutions, a one-way valve is provided on the silo cover to control the one-way flow of gas from the outside of the silo cover to the inside of the powder silo.

[0016] In some technical solutions, the powder discharge screw includes: a rod-shaped body; helical blades spirally wound around the rod-shaped body; and multiple rod segments located above the helical blades, the multiple rod segments being connected to the rod-shaped body to form a closed structure, the multiple rod segments being non-coplanar; and / or the powder discharge screw includes: a rod-shaped body; helical blades spirally wound around the rod-shaped body; and a pusher portion located at the bottom of the rod-shaped body and between the bottom of the rod-shaped body and the adjacent helical blades in the discharge direction, the pusher portion being at least partially fixed relative to the rod-shaped body and / or the helical blades, the discharge end edge of the pusher portion being offset from the discharge end edge of the helical blades in the circumferential direction of the rod-shaped body.

[0017] To achieve the second objective mentioned above, this utility model also provides an automatic brewing machine, which includes any of the aforementioned powder dispensing devices and a liquid supply device; the liquid supply device and the powder dispensing device are respectively used to supply liquid and powder to the container. Since the aforementioned powder dispensing device has the above-mentioned technical effects, the automatic brewing machine with this powder dispensing device should also have the corresponding technical effects. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the powder discharging device provided in an embodiment of the present utility model;

[0020] Figure 2 This is an embodiment of the present utility model. Figure 1 A cross-sectional view along the DD direction;

[0021] Figure 3 This is an embodiment of the present utility model. Figure 2 An enlarged schematic diagram of the local structure;

[0022] Figure 4 A schematic diagram of the powder hopper drive provided for an embodiment of this utility model;

[0023] Figure 5 A schematic diagram of the coupling between the first coupler and the second coupler provided in an embodiment of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the first coupler provided in an embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the powder discharge screw in an inverted state according to an embodiment of the present invention;

[0026] Figure 8 for Figure 7 An enlarged structural diagram at point A;

[0027] Figure 9 This is a schematic diagram of the structure of the powder discharge screw provided in an embodiment of the present utility model;

[0028] Figure 10 This is a schematic diagram of the powder dispensing device in an inverted state according to an embodiment of the present invention;

[0029] Figure 11 for Figure 10 A magnified structural diagram at point B;

[0030] Figure 12 This is a schematic diagram of the powder discharging device provided in an embodiment of the present utility model;

[0031] Figure 13 A top view of the powder dispensing device provided in an embodiment of this utility model;

[0032] Figure 14 for Figure 13 A schematic diagram of the cross-sectional structure at point CC;

[0033] Figure 15 This is a schematic diagram showing the distribution of the blade trailing edge and the pusher part staggered in the circumferential direction in an embodiment of this utility model.

[0034] Figure 16 A schematic diagram of one side of the stage and its driving mechanism provided in an embodiment of this utility model;

[0035] Figure 17 A schematic diagram of the other side of the stage and its driving mechanism provided in an embodiment of this utility model;

[0036] Figure 18 A schematic diagram showing the transmission connection between the baffle and the material blocking drive mechanism provided in an embodiment of this utility model;

[0037] Figure 19 A schematic diagram of the detachable support tray and baffle provided in an embodiment of this utility model.

[0038] The following labels are shown in the attached diagram:

[0039] 1. Outer shell; 2. Powder hopper; 3. Powder discharge screw; 4. Powder hopper drive mechanism; 5. Outer cylinder; 6. Hopper cover; 7. First coupler; 8. Second coupler; 9. Sealing ring; 10. Magnetic suction structure; 11. Platform; 12. Lifting motor; 13. Lifting screw; 14. Lifting seat; 15. Column; 16. First crossbeam; 17. Second crossbeam; 18. Guide rod; 19. Material blocking drive mechanism; 20. Baffle; 21. Rack; 22. Support tray; 26. Support rod; 2-1. Inlet; 2-2. Powder outlet; 2-3. Discharge channel; 2-4. Hopper body; 3-1. Rod-shaped main body; 3-2. Spiral blade; 3-3. Pushing part; 3-4. Multi-segment rod part; 3-4. Bottom 3-1-1, bottom surface 3-1-2; blade trailing edge 3-2-1, radial outer side 3-2-2; radial extension edge 3-3-1, axial extension edge 3-3-2, upper edge 3-3-3, inner edge 3-3-4; intermediate rod 3-4-1, first end 3-4-11, second end 3-4-12, first section 3-4-13, second section 3-4-14; connecting rod 3-4-2, first connecting rod 3-4-21, second connecting rod 3-4-22; extension rod 3-4-3; drive motor 4-1, driving gear 4-2, driven gear 4-3; mounting slot 6-1. Detailed Implementation

[0040] This utility model discloses a powder dispensing device to effectively solve the problem of complex structure of powder dispensing devices.

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] Please see Figures 1-9 , Figure 1 This is a schematic diagram of the powder discharging device provided in an embodiment of the present utility model; Figure 2 This is an embodiment of the present utility model. Figure 1 A cross-sectional view along the DD direction; Figure 3 This is an embodiment of the present utility model. Figure 2 An enlarged schematic diagram of the local structure; Figure 4 A schematic diagram of the powder hopper drive provided for an embodiment of this utility model; Figure 5 A schematic diagram of the coupling between the first coupler and the second coupler provided in an embodiment of this utility model; Figure 6 This is a schematic diagram of the structure of the first coupler provided in an embodiment of the present utility model; Figure 7 This is a schematic diagram of the structure of the powder discharge screw in an inverted state according to an embodiment of the present invention; Figure 8 This is an embodiment of the present utility model. Figure 1 A magnified structural diagram at point B; Figure 9 This is a schematic diagram of the powder discharge screw provided in an embodiment of the present invention.

[0043] In some embodiments, as shown in the appendix Figure 1 , 2 As shown, a powder dispensing device is provided, which can be used to dispense milk powder, coffee powder, or bean powder, etc. For ease of description, the following description uses milk powder dispensing as an example. The powder dispensing device mainly includes a housing 1, a powder hopper 2, a powder dispensing screw 3, and a powder hopper drive mechanism 4.

[0044] The powder hopper 2 is rotatably mounted on the outer casing 1, allowing it to rotate relative to the casing 1. The powder hopper drive mechanism 4 is connected to the powder hopper 2 to drive it to rotate relative to the casing 1, specifically rotating around the axis of the powder dispensing screw 3. The powder dispensing screw 3 is located inside the powder hopper 2 and is fixed relative to the casing 1. During the rotation of the powder hopper 2 relative to the casing 1 driven by the powder hopper drive mechanism 4, since the powder dispensing screw 3 remains in a fixed position relative to the casing 1, the powder hopper 2 will rotate relative to the powder dispensing screw 3. From the perspective of relativity of motion, that is, the powder dispensing screw 3 rotates relative to the powder hopper 2, thus satisfying the powder dispensing condition of the powder dispensing screw 3.

[0045] In one example, if the powder discharge screw 3 discharges material when it rotates clockwise, then the powder hopper drive mechanism 4 can drive the powder hopper 2 to rotate counterclockwise, while the powder discharge screw 3 remains stationary. This means that the powder discharge screw 3 rotates clockwise relative to the powder hopper 2 to achieve material discharge.

[0046] It should be noted that the powder hopper drive mechanism 4 is designed to drive the powder hopper 2 to rotate, and its specific structure is not limited. It can be directly driven by a motor or a hydraulic motor, etc. The powder discharge screw 3 is used to rotate relative to the powder hopper 2 to achieve material discharge, and its specific structure is not limited.

[0047] The above-mentioned powder discharging device operates as follows: The powder discharging screw 3 is fixed relative to the outer casing 1, while the powder hopper 2 is rotatably mounted on the outer casing 1. The powder hopper drive mechanism 4 drives the powder hopper 2 to rotate relative to the outer casing 1, thereby driving the powder discharging screw 3 to rotate. This relative rotation between the powder discharging screw 3 and the powder hopper 2 results in the powder discharging screw 3 pushing the powder material out of the powder hopper 2. In this powder discharging device, there is no need to drive the powder discharging screw 3 to rotate; the powder hopper 2 can be directly driven to rotate. Compared to driving the powder discharging screw 3 to rotate, driving the powder hopper 2 allows for a more convenient arrangement of the powder hopper drive mechanism 4, resulting in a simpler and more convenient overall structural layout, thus simplifying the powder discharging device. Therefore, the above-mentioned powder discharging device effectively solves the problem of complex structures in powder discharging devices.

[0048] In some embodiments, as shown in the appendix Figure 4 As shown, and in conjunction with the appendix Figure 2 , 3The powder hopper 2 includes an inlet 2-1 and an outlet 2-2, and the powder hopper drive mechanism 4 is located near the inlet 2-1 of the powder hopper 2. For example... Figure 4 As shown, the powder hopper 2 has a powder outlet 2-2 at the bottom and an inlet 2-1 at the top. The powder hopper drive mechanism 4 is located at the top of the powder hopper 2 to avoid the powder outlet 2-2 at the bottom. This makes it difficult for milk powder to drift to the inlet of the powder hopper 2 when it comes out of the powder outlet 2-2. This can prevent milk powder from entering the powder hopper drive mechanism 4 and affecting its service life, especially when the powder hopper drive mechanism 4 uses a motor as the drive source.

[0049] In some embodiments, as shown in the appendix Figure 4 As shown, and in conjunction with the appendix Figure 2 , 3 The powder hopper drive mechanism includes: a motor 4-1, a driving gear 4-2, and a driven gear 4-3; the driving gear 4-2 is driven to rotate by the motor 4-1; and the driven gear 4-3 is sleeved on the powder hopper 2 and meshes with the driving gear 4-2, and the driven gear 4-3 is fixed relative to the powder hopper 2 so that the two rotate synchronously. (See attached diagram) Figure 4 As shown, the driven gear 4-3 has a gear ring structure and is sleeved on the outside of the powder hopper inlet 2-1. The two can be integrally formed or fixedly connected by welding or other methods. The driving gear 4-2 and the motor 4-1 are arranged on one side, on the outside of the powder hopper 2, and are arranged side by side with the driven gear 4-3. The main body of the motor 4-1 is located below the driving gear 4-2.

[0050] When in use, motor 4-1 is turned on, and its main shaft rotates, driving the drive gear 4-2 to rotate synchronously. Due to the meshing relationship between the drive gear 4-2 and the driven gear 4-3, a gear transmission is formed, thus pushing the driven gear 4-3 to rotate. Since the driven gear 4-3 is relatively fixed to the powder hopper 2, it also drives the powder hopper 2 to rotate synchronously. Compared to belt drives, the transmission via the driven gear 4-3 and drive gear 4-2 is more suitable for larger transmission ratios and allows for a more compact structure.

[0051] In some other examples, the powder hopper drive mechanism 4 may also include a motor and a belt drive mechanism (not shown in the figure).

[0052] In some embodiments, as shown in the appendix Figure 2 , 3As shown, to facilitate the installation of the powder hopper 2, an outer cylinder 5 can be further provided. The powder hopper 2 is installed inside the outer cylinder 5 and can rotate within the outer cylinder 5, supported by the internal structure of the outer cylinder 5, but can rotate relative to the outer cylinder 5. The outer cylinder 5 is fixed relative to the powder discharge screw 3 and is fixedly installed in the outer casing 1. By providing the outer cylinder 5, the rotating powder hopper 2 is prevented from contacting the electrical structure inside the outer casing 1, thus better protecting the electrical structure inside the outer casing 1. The outer cylinder 5 is fitted over the powder hopper 2 and separated from the powder hopper 2 by a specified gap, allowing the driven gear 4-3 to be located in the gap between the powder hopper 2 and the outer cylinder 5, so that the driven gear 4-3 can be arranged.

[0053] In this embodiment, the outer cylinder 5 has a shoulder formed at the part corresponding to the driven gear 4-3 to support the driven gear 4-3. Preferably, in order to reduce the mutual friction between the driven gear 4-3 and the shoulder, a sliding structure can also be provided between the shoulder and the driven gear 4-3. This reduces the friction between the driven gear and the shoulder without affecting the rotation of the powder hopper 2, and extends the service life of the powder discharging device.

[0054] In some examples, the powder hopper 2 is preferably detachably mounted on the outer cylinder 5, meaning it can be removed from the outer cylinder 5. Specifically, the powder hopper 2 can be placed inside the outer cylinder 5 from the upper opening of the outer cylinder 5 and restrained within the outer cylinder 5 by the hopper cover 6, limiting its rotation. When the hopper cover 6 is open, it can be removed from the upper opening of the outer cylinder 5 for easy removal and cleaning.

[0055] The outer cylinder 5 is designed to facilitate the installation of the powder hopper 2, which restricts the range of motion of the powder hopper 2 while making it easier to pick up and put down the powder hopper 2.

[0056] In some embodiments, in conjunction with the appendix Figure 1 , 2 As shown in Figure 3, a cover 6 for covering the inlet 2-1 of the powder hopper 2 can be further provided. The cover 6 is installed on the outer shell 1. It can be installed by rotation as shown in the attached figure so that it can be flipped open, or it can be snapped on by means of buckle, snap-fit, etc., or it can be directly sealed on the inlet 2-1 so that it can be removed from the outer shell 1.

[0057] Since the cover 6 is fixed relative to the outer shell 1, the cover 6 does not rotate when the powder hopper 2 rotates, resulting in relative rotation between the powder hopper 2 and the cover 6. To prevent powder leakage and ensure cleanliness inside the powder hopper, a sealing ring 9 can be provided between the outer wall of the cover 6 and the inner wall of the powder hopper 2. Specifically, the sealing ring 9 can be fixed to the outer wall of the cover 6, with its outer side abutting against the inner wall of the powder hopper 2, so as to always seal the gap between the cover 6 and the inner wall of the powder hopper 2 during relative movement.

[0058] In some examples, the powder discharge screw 3 can be mounted on the hopper cover 6, thus indirectly mounting it to the outer casing 1 and indirectly preventing the powder discharge screw 3 from rotating relative to the outer casing 1. The powder discharge screw 3 and the hopper cover 6 can be detachably or non-detachably mounted, depending on the ability to transmit torque. Mounting the powder discharge screw 3 on the hopper cover 6 to indirectly maintain relative fixation with the outer casing 1 is more convenient than directly mounting it to the outer casing 1.

[0059] In some embodiments, the powder dispensing screw 3 can be detachably mounted to the compartment cover 6. This detachable connection to the compartment cover 6 facilitates removal from the cover, thereby simplifying cleaning. In a specific example, during use, when the compartment cover 6 is open, because the powder dispensing screw 3 is detachably connected to the cover 6, it can remain inside the powder compartment 2 without moving with the cover 6, thus preventing the screw from moving with the cover 6 when it is open.

[0060] In some embodiments, the powder discharge screw 3 can be fixedly installed on the hopper cover 6, while the hopper cover 6 can be detachably installed on the outer shell 1. During use, the powder discharge screw 3 and the hopper cover 6 can be disassembled as a whole for easy cleaning (the solution is not shown in the figure). The hopper cover 6 and the outer shell 1 can be connected by a snap fastener or a clip-on connection. The specific connection method can be set as needed to facilitate the disassembly of the combined structure consisting of the hopper cover 6 and the powder discharge screw 3.

[0061] In some embodiments, as shown in the appendix Figure 5 , 6 As shown, and in conjunction with the appendix Figure 3 To facilitate the detachable connection between the hopper cover 6 and the powder discharge screw 3, a first coupler 7 can be provided on the inner side of the hopper cover 6, and a second coupler 8 can be provided on the top of the powder discharge screw 3. The first coupler 7 and the second coupler 8 are coupled in an anti-rotation manner, thereby preventing the hopper cover 6 and the powder discharge screw 3 from rotating relative to each other through the coupling of the first coupler 7 and the second coupler 8, thereby indirectly preventing the powder discharge screw 3 from rotating relative to the outer shell 1, thus ensuring normal powder discharge.

[0062] As attached Figure 5 As shown, the second coupler 8 can adopt a straight-line connecting handle, as shown in the attached diagram. Figure 5 , 6 As shown, the first coupler 7 can adopt a quincunx groove, such as a quincunx groove with six mating grooves. The two ends of the straight connecting handle are respectively located in two opposite mating grooves. At this time, the second coupler 8 and the first coupler 7 have at least three mating positions at different angles, so as to greatly improve the success rate of the first coupler 7 and the second coupler 8 coupling at one time, so as to facilitate closing the compartment cover 6.

[0063] In some embodiments, to improve the connection stability of the first coupler 7 in the compartment cover 6 and prevent the two from easily disengaging, as shown in the attached... Figure 2 As shown, a magnetic attraction structure 10 can be provided at the installation position corresponding to the first coupler 7 to magnetically fix it to the first coupler 7, which improves the ease of installation of the first coupler 7 and the stability during use, and prevents the first coupler 7 from falling off the cover 6. In order to facilitate the installation of the magnetic attraction structure 10, an installation groove 6-1 can be provided on the cover, and the magnetic attraction structure 10 can be inserted into the installation groove 6-1 to be fixed.

[0064] In some embodiments, a one-way valve is provided on the lid 6 to control the unidirectional flow of gas from the outside of the lid 6 to the inside of the powder hopper 2. The one-way valve prevents the gas inside the powder hopper 2 from randomly exchanging gas with the outside air, thus preventing the outside air from entering the powder hopper 2 and preventing the milk powder from getting damp. When the internal air pressure is low, air can be added to avoid problems such as poor powder dispensing and the lid 6 being unable to open due to low internal air pressure. It should be noted that the orifice of the one-way valve should be as small as possible to prevent the milk powder from getting damp. In some embodiments, a small through hole can also be provided in the lid 6 to ensure that the powder hopper 2 is always connected to the outside atmosphere, preventing the generation of negative pressure. In some embodiments, a solenoid valve can also be provided, and the connection or disconnection between the powder hopper 2 and the atmosphere can be achieved by controlling the opening and closing of the solenoid valve.

[0065] In some embodiments, as shown in the appendix Figure 7-15 As shown, a powder discharge screw 3 is provided for pushing powder out of the powder hopper 2. Specifically, the powder discharge screw 3 can be a feeding screw, as shown in the attached figure. Figure 9 As shown, materials are conveyed downwards. Specifically, see attached... Figure 7 , 9 The powder discharge screw 3 shown mainly includes a rod-shaped body 3-1 and a spiral blade 3-2, wherein the attached... Figure 7 The powder discharge screw 3 is compared with the attached Figure 9 The powder discharge screw 3 is set up inverted.

[0066] The spiral blade 3-2 is spirally wound around the rod-shaped body 3-1, and the two are fixed relative to each other. This allows the spiral blade 3-2 to rotate synchronously when the rod-shaped body 3-1 rotates. The rotation of the spiral blade 3-2 pushes the powder along the discharge direction to achieve discharge. The spiral blade 3-2 can be right-handed, but is not limited to this. When the spiral blade 3-2 rotates relative to the powder hopper 2 in at least one direction, it can push the powder along the axial direction, as shown in the attached diagram. Figure 9 As shown, rotating around the direction indicated by the arrow can push the powder out in the discharge direction. The connection between the spiral blade 3-2 and the rod-shaped body 3-1 can be integrally formed or welded; there is no limitation on this.

[0067] In some embodiments, as shown in the appendix Figure 7 As shown, the powder discharge screw 3 may be further provided with a pusher part 3-3 on the basis of the rod-shaped body 3-1 and the spiral blade 3-2, and may or may not be provided with the multi-segment rod part 3-4 in any of the following embodiments.

[0068] The pusher section 3-3 is located in the bottom 3-1-1 area of ​​the rod-shaped body 3-1, for material output at the bottom 3-1-1. The bottom 3-1-1 of the rod-shaped body 3-1 can be understood as one end or the discharge end in the discharge direction. Specifically, the pusher section 3-3 is located between the bottom 3-1-1 of the rod-shaped body 3-1 and the adjacent spiral blades 3-2 in the extending direction of the rod-shaped body 3-1, as shown in the attached diagram. Figure 9 and Figure 15 As shown, when the discharge direction is downward, the lower end is the bottom 3-1-1. The pusher part 3-3 is located between the bottom surface 3-1-2 of the rod-shaped body 3-1 (or the plane where the bottom surface 3-1-2 is located) and the adjacent spiral blade 3-2 in the discharge direction to avoid the problem of poor discharge in the bottom 3-1-1 area.

[0069] The pusher part 3-3 is at least partially fixed relative to the rod-shaped body 3-1 and / or the helical blade 3-2, that is, the pusher part 3-3 may be fixedly connected only to the rod-shaped body 3-1, or it may be fixedly connected only to the helical blade 3-2; or it may be as shown in the attached figure. Figure 7 As shown, the pusher part 3-3 is not only fixedly connected to the rod-shaped main body 3-1, but also fixedly connected to the spiral blade 3-2, so as to achieve a better fixing effect, reduce the generation of gaps, and prevent material accumulation. (See attached diagram) Figure 7 As shown, the upper edge 3-3-3 of the pusher part 3-3 is connected to the spiral blade 3-2 and fixedly connected thereto; the inner edge 3-3-4 of the pusher part 3-3 is connected to the side of the rod-shaped body 3-1 and fixedly connected thereto.

[0070] Preferably, the pusher part 3-3 and the trailing edge 3-2-1 of the spiral blade 3-2 are offset in the circumferential direction of the rod-shaped body 3-1, so that when the powder discharge screw 3 rotates, the pusher part 3-3 and the trailing edge 3-2-1 of the spiral blade 3-2 work together, that is, in the direction of rotation, the trailing edge 3-2-1 of the spiral blade 3-2 is in front, and the pusher part 3-3 pushes the material behind, which can avoid the accumulation of material on the rear side of the trailing edge 3-2-1.

[0071] In the aforementioned powder discharge screw 3, in addition to the material pushing by the spiral blades 3-2, a pushing part 3-3 is added to the discharge end of the spiral blades 3-2. The pushing part 3-3 is located between the bottom surface 3-1-2 of the rod-shaped body 3-1 and the adjacent spiral blades 3-2. The pushing part 3-3 and the blade trailing edge 3-2-1 of the spiral blades 3-2 are staggered in the circumferential direction to avoid material accumulation at the bottom 3-1-1 of the powder discharge screw 3. The pushing part 3-3 and the blade trailing edge 3-2-1 of the spiral blades 3-2 are kept at an appropriate distance, allowing them to perform their respective operations on opposite sides of the rod-shaped body 3-1 without mutual interference. This ensures the discharge and pushing processes are carried out, thereby improving the discharge effect. Therefore, this powder discharge screw 3 can effectively solve the problem of poor discharge effect of the powder discharge screw 3.

[0072] In some embodiments, the pusher section 3-3 can be a pusher plate, as shown in the attached figure. Figure 8 As shown, the feeding section 3-3 includes a radially extending edge 3-3-1 extending radially along the rod-shaped body 3-1 and an axially extending edge 3-3-2 extending axially along the rod-shaped body 3-1. The radially extending edge 3-3-1 is flush with the bottom surface 3-1-2 of the rod-shaped body 3-1, while the axially extending edge 3-3-2 is flush with the radially outer side 3-2-2 of the spiral blade 3-2. This flush arrangement achieves a balance between optimal powder scraping effect and ease of use. (And in conjunction with the attached...) Figure 11 As shown, the radially extending edge 3-3-1 is used to approach or contact the upper side of the support rod 26 (its function is described in detail below) so as to scrape the powder on the support rod 26; while the axially extending edge 3-3-2 is used to approach or near the inner wall of the discharge channel 2-3 (its function is described in detail below) so as to scrape the inner wall of the discharge channel 2-3.

[0073] Preferably, the radially extending edge 3-3-1 may also be flush with the bottom surface 3-1-2 of the rod-shaped body 3-1, so that the bottom surface of the powder discharge screw 3 is a planar structure. In some embodiments, the radially extending edge 3-3-1 and the axially extending edge 3-3-2 may not be flush with the corresponding structure, as long as they can achieve their respective functions.

[0074] In some embodiments, as shown in the appendix Figure 8 As shown, the pusher part 3-3 and the blade trailing edge 3-2-1 of the spiral blade 3-2 can be located on opposite sides of the rod-shaped body 3-1, so that the two are staggered as much as possible in the circumferential direction of the rod-shaped body 3-1, so that the pusher part 3-3 and the blade trailing edge 3-2-1 of the spiral blade 3-2 can maintain an appropriate distance, and can perform their respective work on opposite sides of the rod-shaped body 3-1 without mutual interference, ensuring the discharge and push of materials and reducing material accumulation.

[0075] In some embodiments, as shown in the appendix Figure 7, 9 As shown, the powder discharge screw 3 is further provided with multiple rod sections 3-4 on the basis of the rod-shaped main body 3-1 and the spiral blade 3-2, and the pusher section 3-3 may or may not be provided in any of the above embodiments.

[0076] Specifically, the multi-segment rod 3-4 is located on the opposite side of the discharge direction of the spiral blade 3-2, as shown in the attached figure. Figure 9 As shown, the multi-segment rod 3-4 is positioned above the spiral blade 3-2, and the discharge direction of the spiral blade 3-2 is downward. (See attached diagram) Figure 14 As shown, and in conjunction with the appendix Figure 7 The powder hopper 2 includes a hopper body 2-4 and a discharge channel 2-3. During use, the multi-segment rods 3-4 are located within the hopper body 2-4, while the spiral blades 3-2 are located within the discharge channel 2-3. The multi-segment rods 3-4 can be used to feed material to the spiral blades 3-2, improving the turbulence effect on the powder and the discharge efficiency. The multi-segment rods 3-4 and the rod-shaped main body 3-1 are connected to form a closed structure, and the multi-segment rods 3-4 are not coplanar, meaning that each segment of the rod is not located in the same plane, forming a non-coplanar structure.

[0077] By forming a closed structure, the structural strength can be significantly improved, making it less prone to deformation when the screw 3 rotates and pushes the powder. Furthermore, the non-coplanar structure creates multi-dimensional disturbance zones in space, improving material flowability and thus enhancing the discharge efficiency. The hollow structure in the middle of the closed structure reduces the relative rotational resistance between the screw 3 and the powder hopper 2. Therefore, by using a multi-segment non-coplanar and closed rod structure to push material into the powder hopper 2, material accumulation within the hopper 2-4 can be effectively prevented while maintaining structural stability and smooth rotation. Thus, the screw 3 with the aforementioned multi-segment rods 3-4 achieves a better discharge effect, effectively solving the problem of poor discharge performance in existing screw 3 models.

[0078] It should be noted that the non-coplanar structure described in this embodiment can be understood as follows: the multiple rods 3-4 are each regarded as line segments without width and thickness, and the projections of the multiple rods 3-4 on any plane do not coincide.

[0079] In some embodiments, the multi-segment rod 3-4 may include: at least one intermediate rod 3-4-1 and a connecting rod 3-4-2. See attached figure for details. Figure 7 , 9As shown, the intermediate rod 3-4-1 includes a first end 3-4-11 and a second end 3-4-12 connected to each other. The first end 3-4-11 is located in front of the second end 3-4-12 in the direction of rotation when the powder discharge screw 3 rotates to discharge material; and the first end 3-4-11 is above the second end 3-4-12. The direction of rotation is shown in the attached diagram, with the arrow pointing in the forward direction. During rotation, the front end is above the rear end, giving the intermediate rod 3-4-1 a downward pressing effect for better powder delivery. The aforementioned rotation refers to the rotation of the powder discharge screw 3 relative to the powder hopper 2.

[0080] It should be noted that the description of the powder discharge screw 3 rotating in the context actually refers to its rotation relative to the powder hopper 2. This relative rotation can take two forms: one is that the powder hopper 2 rotates relative to the outer casing 1 and the powder discharge screw 3, in which case the powder discharge screw 3 does not rotate relative to the outer casing 1, as in the above embodiment of this application; the other is that the powder discharge screw 3 rotates relative to both the powder hopper 2 and the outer casing 1, in which case the powder hopper and the outer casing 1 do not rotate relative to each other. From the perspective of relative motion, whether the powder discharge screw 3 rotates relative to the powder hopper 2 or the powder hopper 2 rotates relative to the outer casing 1, the feeding principle is at least largely the same and can be considered equivalent.

[0081] Connecting rod 3-4-2 is located between the rod-shaped main body 3-1 and the intermediate rod 3-4-1, serving as an intermediate connection. It should be noted that multiple connecting rods 3-4-2 can be provided, as shown in the attached diagram. Figure 9 As shown, two connecting rods 3-4-2 (first connecting rod 3-4-21 and second connecting rod 3-4-22) are provided, and the two connecting rods 3-4-2 are arranged axially.

[0082] In some embodiments, as shown in the appendix Figure 7 , 9 As shown, the connecting rod 3-4-2 can include a first connecting rod 3-4-21 and a second connecting rod 3-4-22. Specifically, see attached... Figure 9 As shown, the inner end of the first connecting rod 3-4-21 is connected to the rod-shaped main body 3-1, and the outer end is connected to the first end 3-4-11 of the intermediate rod 3-4-1. The inner end of the second connecting rod 3-4-22 is connected to the rod-shaped main body 3-1, and the outer end is connected to the second end 3-4-12 of the intermediate rod 3-4-1. The first connecting rod 3-4-21 and the second connecting rod 3-4-22 provide better stability to the intermediate rod 3-4-1.

[0083] Furthermore, the first connecting rod 3-4-21 can be arranged perpendicularly to the rod-shaped body 3-1; while the second connecting rod 3-4-22 is arranged at an angle relative to the rod-shaped body 3-1, with its outer end inclined towards the discharge direction compared to its inner end. By staggering these arrangements, the first connecting rod 3-4-21 can facilitate powder stratification and reduce rotational resistance, while the second connecting rod 3-4-22, being inclined towards the discharge direction, has a downward pushing effect.

[0084] In some embodiments, as shown in the appendix Figure 7 , 9 As shown, and in conjunction with the appendix Figure 14 The powder discharge screw 3 also includes an extension rod 3-4-3, one end of which is connected to the second end 3-4-12 of the intermediate rod body 3-4-1, and the other end extends toward the spiral blade 3-2 and is located above the spiral blade 3-2, rather than inside the discharge channel 2-3, but extends toward the spiral blade 3-2, so as to facilitate pushing the powder to move in the discharge direction and improve the discharge effect.

[0085] As attached Figure 14 As shown, the other end of the extension rod 3-4-3 forms a certain angle α with the middle rod 3-4-1 to achieve a better material pushing effect. The specific size of the angle α is not limited.

[0086] For details, see attached. Figure 14 As shown, the intermediate rod 3-4-1 and the extension rod 3-4-34-3 are both used to abut against the inner wall of the hopper 2-4. The intermediate rod 3-4-1 includes a first section 3-4-13 and a second section 3-4-14. The shape of the intermediate rod 3-4-1 matches the shape of the corresponding hopper 2-4. The hopper 2-4 includes a cylindrical hopper and a conical hopper. The first section 3-4-134 abuts against the inner wall of the cylindrical hopper, while the second section 3-4-14 and the extension rod 3-4-3 both contact the inner wall of the conical hopper, which is beneficial for scraping the powder off the hopper wall of the hopper 2-4.

[0087] In some embodiments, as shown in the appendix Figure 10 , 12 As shown, the discharge channel 2-3 is cylindrical and connected to the outlet of the hopper 2-4 for discharging materials. It is further integrated with... Figure 13 , 14 As shown, the spiral blades 3-2 of the powder discharge screw 3 extend from the hopper 2-4 to the discharge channel 2-3 for discharge. (See attached diagram.) Figure 10 , 11 As shown, and in conjunction with the appendix Figure 8 The discharge port of the discharge channel 2-3 is equipped with a support rod 26, and the bottom surface 3-1-2 of the rod-shaped body 3-1 of the powder discharge screw 3 abuts against the support rod 26 so as to be supported by the support rod 26.

[0088] As above, the radially extending edge 3-3-1 is used to approach or contact the upper side of the support rod 26 so as to scrape the powder on the support rod 26; while the axially extending edge 3-3-2 is used to approach or near the inner wall of the discharge channel 2-3 so as to scrape the inner wall of the discharge channel 2-3.

[0089] In some embodiments, as shown in the appendix Figure 16 , 17 As shown, a platform 11 for placing the powder receiving container is also provided, which is positioned opposite the powder outlet 2-2. A lifting drive mechanism is connected to the platform 11 to drive the platform 11 closer to or further away from the powder outlet 2-2. The lifting drive mechanism drives the platform 11 to approach the powder outlet 2-2 such that the opening of the powder receiving container placed on the platform 11 abuts against the powder outlet side. In use, the lifting drive mechanism drives the platform 11 to rise so that the powder outlet 2-2 is located inside the opening of the powder receiving container, thus preventing powder from scattering out.

[0090] The lifting drive mechanism includes a lifting motor 12, a lifting screw 13, and a lifting seat 14. One end of the lifting screw 13 is fixed to the lifting motor 12, and the extension direction of the lifting screw 13 is the same as the lifting direction of the platform 11. The lifting seat 14 is located on one side of the platform 11, and the lifting seat 13 includes a connecting part with a threaded groove that mates with the lifting screw 13 to form a screw-nut transmission mechanism.

[0091] The lifting seat 14 also includes a seat body, with the connecting part located on the side of the seat body away from the platform 11; or the lifting seat 14 also includes a seat body, with the connecting part located on the side of the seat body away from the platform 11, and the connecting part protruding from the surface of the seat body. This is so that the connecting part and the platform 11 are on opposite sides of the seat body, to facilitate even force distribution.

[0092] In some embodiments, a gantry frame is also included, which includes two columns 15 and a first crossbeam 16 fixed to the top of the two columns 15. The first crossbeam 16 has an installation structure for rotating the end of the lifting screw 13 away from the lifting motor 12. The lifting seat 14 is located between the two columns 15 of the gantry frame, and the seat body is located on the side of the first crossbeam 16 facing the platform 11.

[0093] The gantry frame further includes a second crossbeam 17 located between two columns 15, with a connecting part located directly above the second crossbeam 17. The second crossbeam 17 is provided with a through groove through which the lifting screw 13 passes, and the through groove communicates with the aforementioned threaded groove. The lifting motor 12 is located directly below the second crossbeam 17.

[0094] The lifting drive mechanism also includes a guide rod 18, which is arranged parallel to the lifting screw 13. The lifting seat 14 has a guide groove through which the guide rod 18 passes. The gantry also includes a bottom beam, which is connected to the bottom of two columns 15. The two ends of the guide rod 18 are fixed to the first crossbeam 16 and the bottom beam, respectively. Furthermore, the bottom beam can be connected to the bottom of the two columns 15 and extend to form an integral structure with the second crossbeam 17.

[0095] Furthermore, the lower end of the lifting seat 14 may have a tube for the guide rod 18 to be inserted and slidably fitted, and the connecting seat may have a mating hole for the tube to be inserted and fitted.

[0096] In some embodiments, as shown in the appendix Figure 18 , 19 As shown, a blocking mechanism can be provided. The blocking mechanism is installed on the outside of the housing 1. At least part of the blocking mechanism can be moved to a first state to block the powder outlet 2-2 or to a second state to open the powder outlet 2-2.

[0097] Specifically, the blocking mechanism may include a material blocking drive mechanism and a baffle plate disposed at the powder outlet. The baffle plate has a material passage. The material blocking drive mechanism 19 can drive the baffle plate 20 to move to a first state to block the powder outlet 2-2 or to move to a second state to open the powder outlet. The discharge outlet is located inside the outer shell 1 and is disposed corresponding to the opening of the outer shell so that the powder at the discharge outlet can flow out of the outer shell 1. The material blocking drive mechanism 19 is installed inside the outer shell 1, and the output end of the material blocking drive mechanism 19 has a gear. The shell surface where the outer shell opening is located has an opening for the gear to be exposed. The baffle plate 20 is detachably disposed on the outside of the outer shell 1. The baffle plate 20 has a material passage. A rack 21 that meshes with the gear is fixed on the baffle plate 20. Through the meshing of the gear and the rack 21, the baffle plate 20 can be driven to move to connect the material passage with the discharge outlet or to block the discharge outlet.

[0098] In some embodiments, for ease of installation, a support tray 22 may also be included. The support tray 22 is detachably mounted on the outside of the housing 1, such as by sliding it against the housing 1. The support tray 22 has a disc surface opposite to the housing surface, defining a space between the disc surface and the housing surface to accommodate the baffle 20. The baffle 20 moves on the support tray 22 under the drive of the baffle driving mechanism 19. The support tray 22 forms a sliding connection with the housing 1 along a preset direction, which is perpendicular to and parallel to the direction of movement of the baffle 20. Specifically, the support tray 22 may include a receiving groove for accommodating the baffle 20, indicating the direction of movement of the baffle 20. At least one receiving groove has its wall protruding outwards to form an expansion groove to facilitate the accommodating of scattered powder.

[0099] As shown in the attached diagram, the baffle 4 is restricted by the support tray 22 to slide only relative to the outer casing 1 in the direction of movement (X1, X2 directions). Figure 2 To be continued Figure 5 As shown, the baffle 20 can slide from the second position to the first position along the X1 direction, where it is in the second state, thus opening the powder outlet 2-2, i.e., connecting the material passage 4-2 with the powder outlet 2-2; and it can also slide from the first position to the second position along the X2 direction, where it is in the first state, thus blocking the powder outlet 2-2, i.e., preventing the material passage 4-2 from connecting with the powder outlet 2-2. The baffle drive mechanism 19 can be a motor, and a transmission mechanism is provided between the motor and the baffle 4. The specific transmission structure is a gear and rack transmission mechanism, as shown in the attached figure. The sliding direction of the baffle 20 is perpendicular to the pushing and pulling direction of the support tray, and both are horizontally arranged.

[0100] Based on the powder dispensing device provided in the above embodiments, this utility model also provides an automatic brewing machine. This automatic brewing machine includes any one of the powder dispensing devices described in the above embodiments, and further includes a liquid supply device. The liquid supply device and the powder dispensing device are used to supply liquid and powder to a container placed on the platform 1. Since this automatic brewing machine uses the powder dispensing device described in the above embodiments, the beneficial effects of this automatic brewing machine can be found in the above embodiments. Examples of automatic brewing machines include automatic coffee makers, automatic milk powder makers, and automatic soy milk makers.

[0101] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0102] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A powder dispensing device, characterized in that, include: Outer shell (1); The powder hopper (2) is rotatably mounted on the outer shell (1); The powder discharge screw (3) is installed inside the powder hopper (2) and fixed relative to the outer shell (1); The powder hopper drive mechanism (4) is connected to the powder hopper (2) to drive the powder hopper (2) to rotate relative to the outer shell (1).

2. The powder discharging device according to claim 1, characterized in that, The powder hopper (2) includes an inlet (2-1) and a powder outlet (2-2), and the powder hopper drive mechanism (4) is located near the inlet (2-1) of the powder hopper (2).

3. The powder discharging device according to claim 1, characterized in that, The powder hopper drive mechanism (4) includes: Motor (4-1); The drive gear (4-2) is driven to rotate by the motor (4-1); The driven gear (4-3) is sleeved on the powder hopper (2) and meshes with the driving gear (4-2), and is fixed relative to the powder hopper (2).

4. The powder discharging device according to claim 3, characterized in that, It also includes an outer cylinder (5), which is fitted outside the powder hopper (2) and separated from the powder hopper (2) by a specified gap. The powder hopper (2) is detachably disposed on the outer cylinder (5), and the driven gear (4-3) is located in the gap between the powder hopper (2) and the outer cylinder (5).

5. The powder discharging device according to claim 1, characterized in that, It also includes a cover (6) for covering the inlet (2-1) of the powder hopper (2); the cover (6) is installed on the outer shell (1), and the powder discharge screw (3) is detachably installed on the cover (6).

6. The powder discharging device according to claim 1, characterized in that, It also includes a cover (6) for covering the inlet (2-1) of the powder hopper (2), the powder discharge screw (3) is fixedly installed on the cover (6), and the cover (6) is detachably installed on the outer shell (1).

7. The powder discharging device according to claim 5, characterized in that, The hopper cover (6) is provided with a first coupler (7), and the top of the powder discharge screw (3) is provided with a second coupler (8). The first coupler (7) and the second coupler (8) are coupled in a non-rotating manner; or, the hopper cover (6) is provided with a first coupler (7) and a magnetic attraction structure (10) for magnetically fixing the first coupler (7). The top of the powder discharge screw (3) is provided with a second coupler (8), and the first coupler (7) and the second coupler (8) are coupled in a non-rotating manner.

8. The powder discharging device according to claim 5 or 6, characterized in that, A one-way valve is provided on the hopper cover (6) to control the one-way flow of gas from the outside of the hopper cover (6) to the inside of the powder hopper (2).

9. The powder discharging device according to claim 1, characterized in that, The powder discharge screw (3) includes: Rod-shaped main body (31); Helical blades (32) are helically wound around the rod-shaped body (31); and A multi-segment rod section (34) is located above the helical blade (32), the multi-segment rod section (34) is connected to the rod-shaped body (31) to form a closed structure, the multi-segment rod section (34) is not coplanar; and / or the powder discharge screw (3) includes: Rod-shaped main body (31); Helical blade (32), the helical blade (32) is helically wound around the rod-shaped body (31). The pusher (33) is located at the bottom of the rod-shaped body (31) and between the bottom surface of the rod-shaped body (31) and the adjacent spiral blade (32) in the discharge direction. The pusher (33) is at least partially fixed relative to the rod-shaped body (31) and / or the spiral blade (32). The discharge end edge of the pusher (33) and the spiral blade (32) are offset from each other in the circumferential direction of the rod-shaped body (31).

10. An automatic brewing machine, comprising a liquid supply device, characterized in that, It also includes the powder dispensing device as described in any one of claims 1-9; the liquid supply device and the powder dispensing device are used to supply liquid and powder to the container.

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