Powder feeding sealing device and powder brewing machine with same

Abstract

The utility model discloses a powder discharging sealing device and a powder brewing machine, the powder discharging sealing device comprises a powder box, a first transmission piece and a sealing piece, the bottom of the powder box is provided with a powder discharging port, and a transmission shaft used for driving a powder discharging drive plate to rotate is arranged on the powder box in a penetrating mode; an elastic telescopic piece which is in transmission fit with the transmission shaft is arranged on the first transmission piece; at least two limiting convex blocks are arranged at the bottom of the powder box in the circumferential direction at intervals, and the first transmission piece is provided with first protruding parts which can abut against the limiting convex blocks in a matched mode so as to limit the rotating positions of the limiting convex blocks; the sealing piece is in transmission fit with the first transmission piece, and when the first transmission piece is driven to rotate till the first protruding part abuts against the limiting protruding block, the sealing piece opens or closes the powder falling opening at the moment. Therefore, the sealing piece is driven through the transmission shaft, so that a driving device does not need to be additionally arranged to drive the sealing piece to move, the manufacturing cost is reduced, meanwhile, the size of a product is reduced, and control is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of powder brewing, in particular to a powder discharging sealing device and a powder brewing machine with the same. Background Art

[0002] At present, most parents are often troubled by how many spoons of milk powder to put, how many milliliters of water to add, and how to match the ratio of water to milk powder when brewing milk powder. For this reason, automatic milk powder machines have emerged on the market. Users only need to put milk powder and water in advance, and the automatic milk powder machine can automatically intake water, add milk powder and automatically stir and mix according to the pre-set ratio, thus greatly improving the milk powder brewing efficiency and ensuring the quality of milk powder brewing.

[0003] Among them, a powder bin for storing milk powder is usually arranged on the automatic milk powder machine, and a powder discharging port is opened at the bottom of the powder bin. In order to prevent steam, dust impurities, etc. from entering the powder bin through the powder discharging port and causing the milk powder to get damp or contaminated, a sealing mechanism needs to be arranged at the powder discharging port to seal the milk powder, so as to ensure the storage quality of the milk powder.

[0004] For this reason, patent publication number CN111067363A discloses a milk powder brewing machine and its powder discharging port sealing mechanism. The powder discharging port sealing mechanism includes a baffle and a driving motor for driving the baffle to slide. Among them, the baffle can slide between a first position and a second position. When the baffle moves to the first position, the powder discharging port is in an open state at this time; when the baffle moves to the second position, the baffle seals the powder discharging port at this time. It can be seen that although the above structure can realize the opening and sealing of the powder discharging port, and further realize the opening or sealing of the powder discharging port of the powder bin, since an additional driving motor needs to be set to drive the baffle to slide, not only the manufacturing cost of the product is increased, but also the driving motor will occupy the internal installation space of the product, resulting in an increase in the volume and weight of the product, thus unable to achieve miniaturization and compactness of the product; in addition, the above structure also makes the control logic of the product more complex, resulting in a greater possibility of user misoperation, thus reducing the user experience. Summary of the Utility Model

[0005] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a powder discharging sealing device and a powder brewing machine with the same, so as to solve the problems of high manufacturing cost, large volume and weight, complex control logic, etc. mentioned in the background art.

[0006] The technical solution adopted by the utility model to solve its problems is as follows:

[0007] A powder discharging sealing device, comprising:

[0008] A powder box, at the bottom of which a powder discharging port is opened; a transmission shaft for driving a powder discharging dial to rotate is penetrated through the powder box;

[0009] The first transmission member is provided with an elastic telescopic member that is in transmission cooperation with the transmission shaft; at least two limiting protrusions are arranged at intervals along the circumferential direction at the bottom of the powder box, and a first protrusion portion that can be in contact and cooperation with the limiting protrusions to limit its rotational position is provided on the first transmission member;

[0010] The seal is in transmission cooperation with the first transmission member; when driving the first transmission member to rotate, the seal can be driven to rotate until the first protrusion portion abuts against the limiting protrusion, at this time the seal opens or closes the powder dropping port;

[0011] Wherein, an avoidance hole through which the elastic telescopic member can extend is further opened at the bottom of the powder box; when driving the transmission shaft to rotate, the first transmission member can be driven to rotate through its transmission cooperation with the elastic telescopic member, at this time the elastic telescopic member does not perform telescopic movement until the first protrusion portion abuts against the limiting protrusion, at this time the first transmission member is limited and fixed and the elastic telescopic member communicates with the avoidance hole; then driving the transmission shaft to continue rotating in the same direction can drive the elastic telescopic member to perform telescopic movement.

[0012] Further, a differential angle transmission connection is provided between the first transmission member and the seal, wherein:

[0013] When driving the transmission shaft to rotate and driving the first transmission member to rotate through the elastic telescopic member, due to the existence of a transmission differential angle, the first transmission member can rotate without load by a certain angle until the transmission shaft drives the elastic telescopic member to cross the avoidance hole, and then the first transmission member and the seal start to be in transmission connection.

[0014] Further, it further includes a second transmission member sleeved on the transmission shaft and in transmission cooperation with the transmission shaft, wherein:

[0015] An accommodation cavity for accommodating the second transmission member is opened inside the first transmission member, and one end of the elastic telescopic member extends into the accommodation cavity;

[0016] A second protrusion portion that can be in contact and cooperation with one end of the elastic telescopic member extending into the accommodation cavity is provided on the second transmission member to achieve transmission connection.

[0017] Further, a differential angle transmission connection is provided between the transmission shaft and the second transmission member, wherein:

[0018] In the initial state, if the second protrusion abuts against the elastic telescopic member to make it extend, the second protrusion is also affected by the rebound force of the elastic telescopic member. If the second transmission member is not restricted by the transmission shaft at this time, due to the existence of the transmission difference angle, the elastic telescopic member can drive the second transmission member to rotate through the second protrusion until the elastic telescopic member is completely reset; if the second transmission member is restricted by the transmission shaft at this time, when the transmission shaft is driven to rotate in the opposite direction, the transmission shaft gradually disengages from the second transmission member, and the elastic telescopic member can drive the second transmission member to rotate in the opposite direction through the second protrusion until the elastic telescopic member is completely reset, and then the transmission shaft and the second transmission member start to be transmitted and connected.

[0019] Furthermore, the second transmission member is a transmission ring sleeved on the transmission shaft, and the second protrusions are a plurality of protrusions arranged on the outer side wall of the transmission ring and spaced apart.

[0020] Further, the first transmission member is a transmission seat, the interior of the transmission seat is provided with the accommodating cavity, the inner side wall of the accommodating cavity is in contact with the end faces of the plurality of protrusions; the first protrusion is a protrusion arranged on the outer side wall of the transmission seat; the elastic telescopic member is an elastic column which is penetrated through the transmission seat and can telescopically move in the radial direction, and one end of the elastic column extends into the accommodating cavity.

[0021] Furthermore, the elastic column includes a column and a spring sleeved on the column, an installation cavity is opened in the transmission seat, and the column is inserted into the installation cavity; one end of the spring abuts against the column, and the other end abuts against the inner wall of the installation cavity.

[0022] Furthermore, a receiving groove for receiving the transmission seat is provided at the bottom of the powder box, and a plurality of the limiting protrusions are distributed in an annular manner at intervals on the inner side wall of the receiving groove, and the end faces of the plurality of the limiting protrusions are in contact with the outer side wall of the transmission seat;

[0023] The inner side wall of the accommodating groove is also provided with a boss extending along its circumference, and the inner side wall of the boss is used to fit with the end face of the elastic column away from the accommodating cavity; a gap is left between the boss and the adjacent limiting protrusion close to it, and the gap forms the avoidance hole.

[0024] Furthermore, the sealing member is a sealing cover plate, and the bottom of the powder box is located at the powder drop outlet and is also provided with a groove connected to the powder drop outlet. When the sealing cover plate is driven to rotate, it can open or close the groove to open or close the powder drop outlet.

[0025] In addition, the utility model also provides a powder brewing machine, comprising the above-mentioned powder lowering sealing device and the powder discharging dial, wherein:

[0026] The powder discharging dial is arranged in the powder box and sleeved on the transmission shaft;

[0027] A differential angle transmission connection is provided between the transmission shaft and the powder discharging dial, and between the transmission shaft and the seal. The transmission differential angle between the transmission shaft and the powder discharging dial is greater than the transmission differential angle between the transmission shaft and the seal;

[0028] When driving the transmission shaft to rotate, the transmission shaft first drives the seal to rotate to open or close the powder falling port, and then drives the powder discharging dial to rotate.

[0029] In summary, a powder feeding and sealing device and a powder brewing machine having the same provided by the present utility model have the following technical effects:

[0030] (1) For the powder feeding and sealing device of the present utility model, when driving the transmission shaft to rotate, the seal can be driven to rotate through the transmission of the first transmission member so as to open or close the powder falling port. It can be seen that the present application does not need to additionally provide a driving device to drive the seal to move. While reducing the manufacturing cost, the volume and weight of the product are greatly reduced, making the product more miniaturized and compact; in addition, since only driving the transmission shaft to rotate can realize the transmission of the seal and the powder discharging dial, the design of the control logic is relatively simple, the user operation is more convenient, the possibility of user misoperation is lower, and the use experience is better.

[0031] (2) For the powder feeding and sealing device of the present utility model, a differential angle transmission connection is provided between the first transmission member and the seal. Due to the existence of the transmission differential angle, when driving the first transmission member to start rotating, the first transmission member can rotate without load for a certain angle until the elastic telescopic member passes over the avoidance hole. At this time, the first transmission member and the seal start to be in transmission connection. Since the elastic telescopic member can only rotate circumferentially and cannot perform telescopic movement at this time, the transmission shaft can smoothly drive the first transmission member to rotate through the elastic telescopic member, and then smoothly drive the seal to rotate to open or close the powder falling port, thereby ensuring the stable and reliable transmission.

[0032] (3) The powder feeding and sealing device of the present utility model has a differential angle transmission connection between the transmission shaft and the second transmission member. In the initial state, if the second protrusion abuts against the elastic telescopic member to make it extend, and if the second transmission member is not restricted by the transmission shaft at this time, due to the existence of a transmission differential angle, the elastic telescopic member can drive the second transmission member to rotate through the second protrusion until the elastic telescopic member is completely reset; if the second transmission member is restricted by the transmission shaft at this time, when driving the transmission shaft to rotate in the reverse direction, the transmission shaft gradually disengages from the second transmission member, and the elastic telescopic member can drive the second transmission member to rotate in the reverse direction through the second protrusion until the elastic telescopic member is completely reset; therefore, connecting the transmission shaft and the second transmission member with a differential angle transmission can ensure that when the transmission shaft and the second transmission member start to be connected for transmission, the elastic telescopic member has been completely reset, thereby avoiding that when the transmission shaft drives the second transmission member to rotate in the reverse direction, the elastic telescopic member is still in the extended state and interferes with the avoidance hole, resulting in rotation obstruction, and further ensuring the stable and reliable transmission.

[0033] (4) The powder brewing machine of the present utility model has a differential angle transmission connection between the transmission shaft and the powder discharging dial, and the transmission differential angle between the transmission shaft and the powder discharging dial is greater than the transmission differential angle between the transmission shaft and the seal. When driving the transmission shaft to rotate, the seal can act prior to the powder discharging dial, so that the powder discharging dial does not act when opening or closing the powder dropping port, thereby ensuring that no additional powder accumulation occurs at the powder dropping port, and further ensuring the cleanliness and hygiene at the powder dropping port. Brief Description of the Drawings

[0034] Figure 1 is an exploded view of the powder feeding and sealing device of the present utility model;

[0035] Figure 2 is a structural diagram of the powder box in the powder feeding and sealing device of the present utility model;

[0036] Figure 3 is a structural diagram of the second transmission member in the powder feeding and sealing device of the present utility model;

[0037] Figure 4 is an exploded view of the first transmission member in the powder feeding and sealing device of the present utility model;

[0038] Figure 5 is a structural diagram of the first transmission member in the powder feeding and sealing device of the present utility model;

[0039] Figure 6 is a partial structural diagram of the first transmission member in the powder feeding and sealing device of the present utility model;

[0040] Figure 7 is a structural diagram of the seal in the powder feeding and sealing device of the present utility model;

[0041] Figure 8It is a schematic structural diagram of a transmission sleeve in the powder feeding and sealing device of the present utility model;

[0042] Figure 9 It is a schematic structural diagram of the powder feeding and sealing device of the present utility model;

[0043] Figure 10 It is a partial schematic structural diagram of the powder feeding and sealing device of the present utility model;

[0044] Figure 11 It is a schematic sectional view of the powder feeding and sealing device of the present utility model;

[0045] Figure 12 It is a schematic structural diagram of the powder brewing machine of the present utility model;

[0046] Figure 13 It is an exploded schematic diagram of the powder brewing machine of the present utility model;

[0047] Figure 14 It is a partial schematic structural diagram of the powder brewing machine of the present utility model.

[0048] Among them, the meanings of the reference numerals are as follows:

[0049] 1. Powder feeding and sealing device; 11. Powder box; 111. Accommodating groove; 112. Limiting convex block; 113. Boss; 114. Avoidance hole; 115. Powder dropping port; 116. Groove; 117. Limiting clamping block; 12. Transmission shaft; 121. Third clamping block; 13. Transmission ring; 131. Convex point; 132. Second clamping hole; 14. First transmission member; 141. Transmission seat; 1411. Seat body; 14111. Convex block; 14112. Installation hole; 14113. Accommodating cavity; 14114. Installation cavity; 1412. Bottom plate; 14121. Installation column; 14122. First clamping block; 142. Elastic column; 1421. Column body; 1422. Spring; 15. Sealing cover plate; 151. First clamping hole; 16. Transmission sleeve; 161. Transmission hole; 162. Second clamping block; 17. Transmission disc; 2. Machine shell; 3. Driving motor; 4. Powder discharging dial; 41. Third clamping hole. Detailed implementation manners

[0050] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0051] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this article are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0053] Embodiment 1

[0054] Refer to Figure 1-11 , the present utility model discloses a powder feeding and sealing device 1, which includes a powder box 11 for storing powder, a first transmission member 14 provided at the bottom of the powder box 11 and rotatable, and a sealing member in transmission cooperation with the first transmission member 14. A powder dropping port 115 is opened at the bottom of the powder box 11, and a transmission shaft 12 for driving a powder discharging dial 4 to rotate is penetrated through the powder box 11. The transmission shaft 12 is in transmission cooperation with the first transmission member 14; wherein, an elastic telescopic member in transmission cooperation with the transmission shaft 12 is arranged inside the first transmission member 14. At least two limiting convex blocks 112 are arranged at intervals along the circumferential direction at the bottom of the powder box 11, and a first convex portion capable of being in contact and cooperation with the limiting convex blocks 112 to limit its rotation position is provided on the first transmission member 14; when driving the transmission shaft 12 to rotate forward, the first transmission member 14 can be driven to rotate forward through its transmission cooperation with the elastic telescopic member, and then the sealing member is driven to rotate forward until the first convex portion of the first transmission member 14 abuts against a limiting convex block 112, at this time the sealing member opens the powder dropping port 115; similarly, when driving the transmission shaft 12 to rotate reversely, the first transmission member 14 can be driven to rotate reversely until its first convex portion abuts against another limiting convex block 112, at this time the sealing member seals the powder dropping port 115.

[0055] Wherein, an avoidance hole 114 for the elastic telescopic member to extend out is further opened at the bottom of the powder box 11; when driving the transmission shaft 12 to rotate, the first transmission member 14 can be driven to rotate through its transmission cooperation with the elastic telescopic member. At this time, the elastic telescopic member does not perform telescopic movement until the first convex portion on the first transmission member 14 abuts against the limiting convex block 112. At this time, the first transmission member 14 is limited and fixed and the elastic telescopic member is communicated with the avoidance hole 114; then driving the transmission shaft 12 to continue rotating in the same direction can drive the elastic telescopic member to perform telescopic movement.

[0056] Therefore, by adopting the powder sealing device 1 of the present application, since the seal is transmitted through the transmission shaft 12, there is no need to set up an additional driving device to drive the seal to move, which greatly reduces the volume of the product while reducing the manufacturing cost, making it more miniaturized and compact; in addition, since the transmission of the seal and the powder discharge dial 4 can be achieved by simply driving the transmission shaft 12 to rotate, the design of the control logic is also relatively simple, the user operation is more convenient, the possibility of misoperation is lower, and the user experience is better.

[0057] Furthermore, the lower powder sealing device 1 also includes a second transmission member sleeved on the transmission shaft 12 and in transmission cooperation with the transmission shaft 12. The first transmission member 14 is provided with a receiving chamber 14113 for receiving the second transmission member, and one end of the elastic telescopic member extends into the receiving chamber 14113; the second transmission member is provided with a second protrusion that can be in conflict with one end of the elastic telescopic member extending into the receiving chamber to achieve transmission connection. Therefore, when the transmission shaft 12 is driven to rotate, the second transmission member can be driven to rotate and the second protrusion on the second transmission member can be in conflict with the elastic telescopic member to drive the first transmission member 14 to rotate, thereby driving the sealing member to rotate.

[0058] See also Figure 3-7 Specifically, the second transmission member is a transmission ring 13 sleeved on the transmission shaft 12, and the second protrusion is a plurality of protrusions 131 arranged on the outer wall of the transmission ring 13 and arranged at intervals; the first transmission member is a transmission seat 141, and the transmission seat 141 has the above-mentioned accommodating cavity 14113 opened inside, and the inner side wall of the accommodating cavity 14113 fits with the end faces of the plurality of protrusions 131, thereby limiting the movement of the transmission ring 13 in the radial direction so that the transmission ring 13 can only rotate in the circumferential direction; wherein the first protrusion is a convex block 14111 arranged on the outer wall of the transmission seat 141; the elastic telescopic member is an elastic column 142 that is penetrated in the transmission seat 141 and can telescopically move in the radial direction, and the The elastic column 142 includes a column 1421 and a spring 1422 sleeved on the column 1421. The transmission seat 141 is provided with an installation cavity 14114 connected to the accommodating cavity 14113, and the column 1421 is penetrated in the installation cavity 14114; one end of the spring 1422 abuts against the column 1421, and the other end abuts against the inner wall of the installation cavity 14114; under the elastic force of the spring 1422, one end of the column 1421 passes through the protrusion 14111 and its end face is flush with the end face of the protrusion 14111, and the other end of the column 1421 extends into the accommodating cavity 14113; the sealing component is a sealing cover plate 15, and the transmission seat 141 is transmission-matched with the sealing cover plate 15.

[0059] Furthermore, the drive seat 141 includes a seat body 1411 and a bottom plate 1412 covering the bottom of the seat body 1411. An accommodation cavity 14113 and a mounting cavity 14114 are formed inside the seat body 1411. In addition, a plurality of mounting holes 14112 are formed in the seat body 1411, and a plurality of corresponding mounting posts 14121 are provided on the bottom plate 1412 corresponding to the plurality of mounting holes 14112. Thus, the connection between the seat body 1411 and the bottom plate 1412 can be achieved by passing bolts through the mounting holes 14112 and fixing them on the mounting posts 14121.

[0060] Refer to Figure 2 and Figure 10 , a receiving groove 111 for receiving the drive seat 141 is formed at the bottom of the powder box 11. A plurality of limiting bumps 112 are distributed at intervals in a circular shape on the inner side wall of the receiving groove 111, and the end faces of the plurality of limiting bumps 112 are in contact with the outer side wall of the drive seat 141, so as to restrict the movement of the drive seat 141 in the radial direction and enable the drive seat 141 to only rotate in the circumferential direction. In addition, a boss 113 extending along the circumferential direction is provided on the inner side wall of the receiving groove 111, and the inner side wall of the boss 113 is in contact with the end face of the bump 14111. A gap is left between the boss 113 and the adjacent limiting bump 112 close to it, and the gap forms the above-mentioned avoidance hole 114.

[0061] Thus, when the drive shaft 12 is driven to rotate forward, the drive ring 13 can be driven to rotate forward, and the bump 131 on the drive ring 13 abuts against and cooperates with one end of the column 1421 extending into the accommodation cavity 14113 to drive the drive seat 141 to rotate forward, and then drive the sealing cover plate 15 to rotate forward until the bump 14111 on the drive seat 141 abuts against a limiting bump 112 at the bottom of the powder box 11. At this time, the drive seat 141 is limited and fixed, and at the same time the sealing cover plate 15 does not move and the powder dropping port 115 is opened. At this time, the column 1421 on the drive seat 141 communicates with an avoidance hole 114. Subsequently, when the drive shaft 12 is driven to continue rotating, the drive ring 13 can be driven to continue rotating, and the bump 131 on the drive ring 13 continuously drives the column 1421 to overcome the elastic force of the spring 1422 and perform a telescopic movement, thus forming an effect similar to "idle rotation", and the powder discharging dial 4 sleeved on the drive shaft 12 can rotate forward and powder can be discharged.

[0062] Similarly, when driving the transmission shaft 12 to rotate in the reverse direction, the transmission ring 13 can be driven to rotate in the reverse direction, and the bumps 131 on the transmission ring 13 are in contact and cooperation with one end of the cylinder 1421 extending into the accommodation cavity 14113 to drive the transmission seat 141 to rotate in the reverse direction, thereby driving the sealing cover plate 15 to rotate in the reverse direction. Until the bump 14111 on the transmission seat 141 abuts against another limit bump 112 at the bottom of the powder box 11, at this time, the transmission seat 141 is limited and fixed, and at the same time, the sealing cover plate 15 does not move and seals the powder dropping port 115. At this time, the cylinder 1421 on the transmission seat 141 communicates with another avoidance hole 114. Subsequently, when driving the transmission shaft 12 to continue to rotate, the transmission ring 13 can be driven to continue to rotate, and the bumps 131 on the transmission ring 13 continuously drive the cylinder 1421 to overcome the elastic force of the spring 1422 and perform a telescopic movement. The powder discharging dial 4 sleeved on the transmission shaft 12 also rotates in the reverse direction. However, since the sealing cover plate 15 seals the powder dropping port 115, powder feeding cannot be achieved.

[0063] In addition, a groove 116 communicating with the powder dropping port 115 is further opened at the bottom of the powder box 11 at the position of the powder dropping port 115. When driving the sealing cover plate 15 to rotate, it can open or close the groove 116 to open or close the powder dropping port 115. Thus, by providing the groove 116, a three-dimensional powder dropping area can be formed between the powder dropping port 115 and the sealing cover plate 15, and the powder coming out of the powder dropping port 115 can be temporarily stored in the powder dropping area, thereby preventing the powder from accumulating outside the powder dropping port 115, and further ensuring that the position of the powder dropping port 115 is clean and there is no residual powder after powder feeding.

[0064] In addition, in order to further ensure that the sealing cover plate 15 can accurately stop at the set position, two limit blocks 117 are arranged at intervals along the circumference at the bottom of the powder box 11. When driving the sealing cover plate 15 to rotate until it abuts against the two limit blocks 117 respectively, the sealing cover plate 15 opens or closes the powder dropping port 115.

[0065] Refer to again Figure 9, Specifically, the transmission seat 141 and the sealing cover plate 15 are connected by a first clamping structure to achieve differential angle transmission connection. The first clamping structure includes a first clamping hole 151 opened on the sealing cover plate 15 and a first clamping block 14122 provided at the bottom of the bottom plate 1412 of the transmission seat 141. The first clamping block 14122 is clamped in the first clamping hole 151. The first clamping hole 151 extends circumferentially and forms a transmission differential angle with the first clamping block 14122. Thus, when driving the transmission shaft 12 to rotate, the transmission ring 13 can be driven to rotate and drive the column 1421 to rotate circumferentially through the abutting fit between the bump 131 and the column 1421, and then drive the transmission seat 141 to rotate. Due to the existence of the transmission differential angle, at this time, the transmission seat 141 and the sealing cover plate 15 are not in transmission connection. The transmission seat 141 can rotate without load by a certain angle until the column 1421 drives the column 1421 to cross the avoidance hole 114 and the end face of the column 1421 away from the accommodating cavity 14113 abuts against the inner side wall of the boss 113. At this time, the column 1421 can only rotate circumferentially and cannot perform telescopic movement in the radial direction. At the same time, the first clamping block 14122 abuts against the first clamping hole 151 so that the transmission seat 141 and the sealing cover plate 15 start to be in transmission connection. Subsequently, the transmission seat 141 can drive the sealing cover plate 15 to rotate to open or close the powder dropping port 115.

[0066] Therefore, the transmission seat 141 and the sealing cover plate 15 are arranged in a differential angle transmission connection. Due to the existence of the transmission differential angle, when initially driving the transmission seat 141 to rotate, the transmission seat 141 can rotate without load by a certain angle until the elastic column 142 crosses the avoidance hole 114. At this time, the transmission seat 141 and the sealing cover plate 15 start to be in transmission connection. Since the elastic column 142 can only rotate circumferentially and cannot perform telescopic movement at this time, the transmission shaft 12 can smoothly drive the transmission seat 141 to rotate through the elastic column 142, and then smoothly drive the sealing cover plate 15 to rotate to open or close the powder dropping port 115, thereby ensuring the stable and reliable transmission.

[0067] Refer to again Figure 1 , Figure 3 and Figure 8 , It further includes a transmission sleeve 16 sleeved on the transmission shaft 12 and in transmission cooperation with the transmission ring 13. Among them, a transmission hole 161 for sleeving on the transmission shaft 12 to achieve transmission connection is opened on the transmission sleeve 16; a differential angle transmission connection is achieved between the transmission sleeve 16 and the transmission ring 13 through a second clamping structure; specifically, the second clamping structure includes a second clamping hole 132 opened on the inner side wall of the transmission ring 13 and a second clamping block 162 provided on the outer side wall of the transmission sleeve 16. The second clamping block 162 is clamped in the second clamping hole 132. The second clamping hole 132 extends circumferentially and forms a transmission differential angle with the second clamping block 162.

[0068] Thus, in the initial state, when the convex point 131 abuts against one end of the elastic column 142 to make it extend, if the transmission ring 13 is not restricted by the transmission sleeve 16 at this time, due to the transmission differential angle, the elastic column 142 can drive the transmission ring 13 to rotate through the convex point 131 until the elastic column 142 is completely reset; if the transmission ring 13 is restricted by the transmission sleeve 16 at this time, when driving the transmission shaft 12 to rotate in the reverse direction, the transmission sleeve 16 can be driven to rotate in the reverse direction to gradually disengage from the transmission ring 13, and the elastic column 142 can drive the transmission ring 13 to rotate in the reverse direction through the convex point 131 until the elastic column 142 is completely reset, and then the transmission sleeve 16 and the transmission ring 13 start to be in transmission connection.

[0069] Therefore, setting the transmission sleeve 16 and the transmission ring 13 to be in differential angle transmission connection can ensure that when the transmission sleeve 16 and the transmission ring 13 start to be in transmission connection, the elastic column 142 has been completely reset, thereby avoiding that when the transmission sleeve 16 drives the transmission ring 13 to rotate in the reverse direction, the elastic column 142 is still in the extended state and interferes with the avoidance hole 114, resulting in blocked rotation, and further ensuring the stable and reliable transmission.

[0070] Of course, it should be noted that in other embodiments, the transmission sleeve 16 can also be omitted, and the transmission shaft 12 and the transmission ring 13 are in differential angle transmission connection, which can also achieve the same technical effect and is not limited here.

[0071] Refer to Figure 1 and Figure 11 again, the powder feeding and sealing device 1 further includes a transmission disk 17 sleeved on the transmission shaft 12. The transmission disk 17 is used for transmission cooperation with an external driving device (such as a motor), etc. When the external driving device is started, it can drive the transmission disk 17 to rotate and then drive the transmission shaft 12 to rotate.

[0072] Embodiment 2

[0073] Refer to Figure 12-14 again, the present invention further provides a powder brewing machine. Preferably, the powder brewing machine is a milk powder brewing machine. The milk powder brewing machine includes a machine shell 2, the powder feeding and sealing device 1 as described in Embodiment 1 provided in the machine shell 2, a driving motor 3 provided in the machine shell 2 and in transmission connection with the transmission disk 17, and a powder discharging dial 4 provided in the powder box 11 and sleeved on the transmission shaft 12. Among them, a differential angle transmission connection is realized between the transmission shaft 12 and the powder discharging dial 4 through a third clamping structure; specifically, the third clamping structure includes a third clamping hole 41 opened on the powder discharging dial 4 and a third clamping block 121 provided on the outer side wall of the transmission shaft 12. The third clamping hole 41 extends circumferentially and forms a transmission differential angle with the third clamping block 121, and the transmission differential angle is larger than the transmission differential angle formed between the transmission shaft 12 and the sealing cover plate 15.

[0074] Thus, when the drive shaft 12 rotates forward, since the transmission angle difference between the drive shaft 12 and the sealing cover plate 15 is smaller than the transmission angle difference between the drive shaft 12 and the powder discharging dial 4, the sealing cover plate 15 rotates before the powder discharging dial 4 and opens the powder falling port 115. Subsequently, the powder discharging dial 4 rotates to achieve powder discharging. On the contrary, when the drive shaft 12 rotates reversely, the sealing cover plate 15 rotates before the powder discharging dial 4 to close the powder falling port 115, thus preventing powder discharging caused by the rotation of the powder discharging dial 4. Therefore, during the opening or closing process of the powder falling port 115, the powder discharging dial 4 does not move, so no additional powder accumulation will occur at the powder falling port 115, ensuring the cleanliness and hygiene of the powder falling port 115.

[0075] In addition, it should be noted that the powder brewing machine of the present utility model is also applicable to coffee brewing machines, soy milk brewing machines and other powder brewing devices. Only the powder brewing devices involving the powder discharging sealing device 1 fall within the protection scope of this application and are not restricted here.

[0076] In summary, the powder discharging sealing device 1 and the powder brewing machine having the same provided by the present utility model have the following technical effects:

[0077] (1) For the powder discharging sealing device 1 of the present utility model, when the drive shaft 12 rotates, the first transmission member 14 can drive the sealing member to rotate through transmission, thereby opening or closing the powder falling port 115. Thus, there is no need to additionally provide a driving device to drive the sealing member to move, which reduces the manufacturing cost and greatly reduces the volume of the product, making it more miniaturized and compact. In addition, since only driving the drive shaft 12 to rotate can achieve the transmission of the sealing member and the powder discharging dial 4, the control logic is relatively simple, the user operation is more convenient, the possibility of misoperation is lower, and the use experience is better.

[0078] (2) For the powder discharging sealing device 1 of the present utility model, the first transmission member 14 and the sealing member are connected by differential angle transmission. Due to the existence of the transmission angle difference, the first transmission member 14 can rotate a certain angle without load until the elastic telescopic member passes over the avoidance hole 114. At this time, the first transmission member 14 and the sealing member start to be in transmission connection. At this time, since the elastic telescopic member can only rotate circumferentially and cannot perform telescopic movement, the first transmission member 14 can be smoothly driven to rotate by the elastic telescopic member, and then the sealing member is driven to rotate to open or close the powder falling port, thereby ensuring the stable and reliable transmission.

[0079] (3) The powder feeding and sealing device 1 of the present utility model. There is a differential angle drive connection between the transmission shaft 12 and the second transmission member. In the initial state, if the second convex portion abuts against the elastic telescopic member to make it extend, and if the second transmission member is not restricted by the transmission shaft 12 at this time, due to the existence of the transmission differential angle, the elastic telescopic member can drive the second transmission member to rotate through the second convex portion until the elastic telescopic member is completely reset; if the second transmission member is restricted by the transmission shaft at this time, when driving the transmission shaft 12 to rotate in the reverse direction, the transmission shaft 12 gradually disengages from the second transmission member, and the elastic telescopic member can drive the second transmission member to rotate in the reverse direction through the second convex portion until the second transmission member is not restricted by the transmission shaft 12, and the elastic telescopic member is completely reset; with such a setting, it can be ensured that when the transmission shaft 12 and the second transmission member start to be in drive connection, the elastic telescopic member has been completely reset, thereby avoiding that when the transmission shaft 12 drives the second transmission member to rotate in the reverse direction, the elastic telescopic member is still in the extended state and interferes with the avoidance hole 114, resulting in rotation obstruction, and further ensuring the reliability of the transmission.

[0080] (4) The powder brewing machine of the present utility model. There is a differential angle drive connection between the transmission shaft 12 and the powder discharging dial 4, and the transmission differential angle between the transmission shaft 12 and the powder discharging dial 4 is greater than the transmission differential angle between the transmission shaft 12 and the seal. When driving the transmission shaft 12 to rotate, the seal can act prior to the powder discharging dial, so that the powder discharging dial 4 does not act when opening or closing the powder dropping port 115, thereby ensuring that no additional powder accumulation occurs at the powder dropping port 115 and ensuring the cleanliness and hygiene at the powder dropping port 115.

[0081] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A powder sealing device, characterized in that: include: A powder box has a powder outlet at the bottom; a transmission shaft for driving the powder discharging dial to rotate is passed through the powder box; A first transmission member is provided with an elastic telescopic member that is in transmission with the transmission shaft; at least two limiting protrusions are arranged at intervals along the circumferential direction at the bottom of the powder box, and the first transmission member is provided with a first protrusion that can be in conflict with the limiting protrusion to limit its rotation position; A sealing member, which cooperates with the first transmission member in transmission; when the first transmission member is driven to rotate, the sealing member can be driven to rotate until the first protrusion contacts the limiting protrusion, at which time the sealing member opens or closes the powder dropping port; Among them, the bottom of the powder box is also provided with an avoidance hole for the elastic telescopic part to extend out; when the transmission shaft is driven to rotate, the first transmission part can be driven to rotate through the transmission cooperation with the elastic telescopic part, and the elastic telescopic part does not perform telescopic movement at this time until the first protrusion conflicts with the limiting protrusion, at which time the first transmission part is limited and fixed and the elastic telescopic part is connected to the avoidance hole; then the transmission shaft is driven to continue to rotate in the same direction to drive the elastic telescopic part to perform telescopic movement.

2. The powder sealing device according to claim 1, characterized in that: The first transmission member and the sealing member are connected by a differential angle transmission, wherein: When the transmission shaft is driven to rotate and the first transmission member is driven to rotate through the elastic telescopic member, due to the existence of a transmission difference angle, the first transmission member can rotate a certain angle without load until the transmission shaft drives the elastic telescopic member to cross the avoidance hole, and the first transmission member and the sealing member begin to be connected in transmission.

3. The powder sealing device according to claim 1 or 2, characterized in that: It also includes a second transmission member which is sleeved on the transmission shaft and is in transmission cooperation with the transmission shaft, wherein: The first transmission member has an accommodating cavity for accommodating the second transmission member, and one end of the elastic telescopic member extends into the accommodating cavity; The second transmission member is provided with a second protrusion which can abut and cooperate with one end of the elastic telescopic member extending into the accommodating cavity to achieve transmission connection.

4. The powder sealing device according to claim 3, characterized in that: The transmission shaft and the second transmission member are connected by a differential angle transmission, wherein: In the initial state, if the second protrusion abuts against the elastic telescopic member to make it extend, the second protrusion is also affected by the rebound force of the elastic telescopic member. If the second transmission member is not restricted by the transmission shaft at this time, due to the existence of the transmission difference angle, the elastic telescopic member can drive the second transmission member to rotate through the second protrusion until the elastic telescopic member is completely reset; if the second transmission member is restricted by the transmission shaft at this time, when the transmission shaft is driven to rotate in the opposite direction, the transmission shaft gradually disengages from the second transmission member, and the elastic telescopic member can drive the second transmission member to rotate in the opposite direction through the second protrusion until the elastic telescopic member is completely reset, and then the transmission shaft and the second transmission member start to be transmitted and connected.

5. The powder sealing device according to claim 3, characterized in that: The second transmission member is a transmission ring sleeved on the transmission shaft, and the second protrusions are a plurality of protrusions arranged on the outer side wall of the transmission ring and spaced apart.

6. The powder sealing device according to claim 5, characterized in that: The first transmission member is a transmission seat, and the transmission seat has an accommodating cavity inside, and the inner wall of the accommodating cavity is in contact with the end faces of the plurality of protrusions; the first protrusion is a block arranged on the outer wall of the transmission seat; the elastic telescopic member is an elastic column which is penetrated in the transmission seat and can move radially, and one end of the elastic column extends into the accommodating cavity.

7. The powder sealing device according to claim 6, characterized in that: The elastic column includes a column and a spring sleeved on the column. A mounting cavity is provided in the transmission seat, and the column is inserted into the mounting cavity. One end of the spring abuts against the column, and the other end abuts against the inner wall of the mounting cavity.

8. The powder sealing device according to claim 6 or 7, characterized in that: The bottom of the powder box is provided with a receiving groove for receiving the transmission seat, and a plurality of the limiting protrusions are distributed in an annular manner on the inner side wall of the receiving groove, and the end faces of the plurality of the limiting protrusions are in contact with the outer side wall of the transmission seat; The inner side wall of the accommodating groove is also provided with a boss extending along its circumference, and the inner side wall of the boss is used to fit with the end face of the elastic column away from the accommodating cavity; a gap is left between the boss and the adjacent limiting protrusion close to it, and the gap forms the avoidance hole.

9. The powder sealing device according to claim 1 or 2, characterized in that: The sealing member is a sealing cover plate, and a groove connected to the powder dropping port is provided at the bottom of the powder box at the powder dropping port. When the sealing cover plate is driven to rotate, the groove can be opened or closed to open or close the powder dropping port.

10. A powder brewing machine, characterized in that: The method comprises a powder lowering sealing device and a powder discharging dial as claimed in any one of claims 1 to 9, wherein: The powder discharging dial is arranged in the powder box and is sleeved on the transmission shaft; The transmission shaft and the powder discharge dial, and the transmission shaft and the seal are both connected by differential angle transmission, and the transmission differential angle between the transmission shaft and the powder discharge dial is greater than the transmission differential angle between the transmission shaft and the seal; When the transmission shaft is driven to rotate, the transmission shaft first drives the sealing member to rotate to open or close the powder drop opening, and then drives the powder discharge dial to rotate.

Images