A powder pressing device

Abstract

The invention discloses a kind of powder pressing device, including organic seat (1);Powder bowl (2) is detachably placed in the bottom of seat (1);Powder pressing head (3) is opposite the top opening of powder bowl (2);And drive mechanism (4), it is characterized in that: the circumferential wall in the inside of powder pressing head (3) has the guide groove (31) extending in spiral shape;The drive mechanism (4) includes lifting seat (41), is housed in the powder pressing head (3), and the circumferential wall is protruding with the guide block (411) corresponding with guide groove (31);First elastic member (42), so that powder pressing head (3) always has the tendency of moving down relative to lifting seat (41);And drive assembly (43) is driving connection with lifting seat (41), to make drive the lifting seat (41) relative to seat (1) lift and lower.Compared with prior art, the powder pressing device of the invention can ensure that the powder distribution after compaction is uniform and the powder pressing effect is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of powder pressing equipment, and particularly relates to a powder pressing device. BACKGROUND

[0002] In the process of making coffee and tea, powder materials are usually pressed to improve the taste of the beverage. For example, to make a cup of fragrant coffee, the following steps are generally included: first, coffee beans are ground into powder by a coffee grinder; then the powder is poured into a powder bowl; then a powder pressing device matched with the powder bowl is used to press the powder; finally, the coffee is brewed by a coffee machine.

[0003] In order to ensure that the pressed powder is evenly distributed, a powder pressing device disclosed in Chinese Patent Application No. CN202010388919.8 (Publication No. CN111493665A) uses a motor screw to drive the pressing of the powder. During the pressing process, the pressing hammer rotates and descends, ensuring that the pressing force is uniform and the surface is flat.

[0004] However, in the above-mentioned scheme, the pressing hammer rotates and descends, which wastes a lot of rotation strokes and limits the pressing effect. SUMMARY

[0005] The present application solves the technical problem of the prior art, and provides a powder pressing device capable of ensuring that the pressed powder is evenly distributed and having a good pressing effect.

[0006] The technical scheme adopted by the present application to solve the above technical problem is as follows: a powder pressing device comprises

[0007] a machine base;

[0008] a powder bowl which is detachably placed at the bottom of the machine base and has an opening at the top;

[0009] a powder pressing head which is movably installed on the machine base and can rotate relative to the machine base, and is opposite to the top opening of the powder bowl; and

[0010] a driving mechanism for driving the powder pressing head to ascend and descend relative to the machine base and to rotate, so that the powder pressing device has at least two states:

[0011] in the first state, the powder pressing head ascends to the limit position and is separated from the powder bowl;

[0012] in the second state, the powder pressing head descends to the limit position and tightly presses the top of the powder in the powder bowl;

[0013] characterized in that the powder pressing head is hollow inside and has an open top, and the circumferential wall inside the powder pressing head has a spiral guide groove extending thereon.

[0014] The driving mechanism comprises

[0015] The lifting seat is accommodated in the powder pressing head, and a guide block corresponding to the guide groove is protruded on the peripheral wall of the lifting seat. The guide block is inserted into the guide groove and can slide along the extension direction of the guide groove.

[0016] The first elastic member acts between the lifting seat and the powder pressing head, so that the powder pressing head always has a downward tendency relative to the lifting seat; and

[0017] The driving assembly is in driving connection with the lifting seat, so as to drive the lifting seat to lift relative to the base, thereby driving the powder pressing head to synchronously lift to the first state and the second state and rotate around the axis of the powder pressing head in the second state.

[0018] In order to ensure the stability of the powder pressing head during self-rotation, the number of the guide grooves is at least two, and the guide grooves are arranged at intervals along the circumference of the powder pressing head. The guide blocks correspond to the guide grooves one by one, and each guide block is inserted into the corresponding guide groove.

[0019] In order to facilitate the installation of the first elastic member, a mounting column is protruded on the bottom wall inside the powder pressing head, and a mounting groove corresponding to the mounting column is formed on the bottom wall of the lifting seat. The first elastic member is a compression spring, the bottom end of the compression spring is sleeved on the mounting column, and the top end of the compression spring is accommodated in the mounting groove.

[0020] In order to ensure that the extension length of the guide groove is long enough, so as to ensure that the powder pressing head has enough self-rotation stroke, the bottom end of the guide groove extends to the bottom wall inside the powder pressing head. In the second state, the guide block is located at the bottom end of the guide groove, and the lifting seat abuts against the bottom wall inside the powder pressing head.

[0021] In order to avoid interference between the mounting column and the lifting seat, in the second state, the mounting column extends into the mounting groove.

[0022] In order to facilitate the driving of the lifting seat and save costs, the driving assembly comprises

[0023] The first connecting rod is rotationally connected to the lifting seat at the first end;

[0024] The second connecting rod is rotationally connected to the first connecting rod at the first end, and rotationally connected to the base at the second end; and

[0025] The handle is in driving connection with the second end of the second connecting rod, and is used for being pinched by the user to drive the second connecting rod to rotate around the second end, thereby driving the lifting seat to lift through the first connecting rod.

[0026] To facilitate handle reset, the drive assembly also includes a second elastic element, which acts between the second link and the base, so that the second link always has the tendency to drive the lifting seat upward through the first link.

[0027] To facilitate the installation of the second elastic element, the second end of the second connecting rod is rotatably connected to the machine base via a rotating shaft. The second elastic element is a torsion spring, which is sleeved on the rotating shaft. The first end of the torsion spring is connected to the second end of the second connecting rod, and the second end of the torsion spring is connected to the machine base.

[0028] To prevent powder from escaping through the powder bowl during the pressing process, the machine base has a vertically oriented channel inside, and the powder bowl is sealed to cover the bottom of the channel.

[0029] To prevent powder from escaping upwards through the gap between the channel and the pressing head during the pressing process, the pressing head is housed within the channel and is sealed to the inner circumferential wall of the channel.

[0030] Compared with the prior art, the advantages of the present invention are as follows: by setting a spirally extending guide groove inside the powder pressing head, setting a guide block on the lifting seat to guide and cooperate with it, and combining the first elastic element and the driving component to drive the lifting seat to rise and fall, the powder pressing head can be driven to rise and fall synchronously to the first state and the second state, and rotate around its own axis in the second state. The powder pressing head only rotates after it descends to the working position, which can press the powder more evenly and compactly, and the powder pressing effect is good. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of an embodiment of the powder pressing device of the present invention in its first state;

[0032] Figure 2 for Figure 1 A three-dimensional exploded view;

[0033] Figure 3 for Figure 2 A three-dimensional structural diagram of the medium-pressure powder head and the first elastic element;

[0034] Figure 4 for Figure 1 A longitudinal sectional view;

[0035] Figure 5 for Figure 4 A longitudinal sectional view after switching to the second state. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0037] like Figures 1 to 5As shown, it is a preferred embodiment of the powder pressing device. The powder pressing device comprises a base 1, a powder bowl 2, a powder pressing head 3 and a driving mechanism 4.

[0038] The base 1 has a channel 11 arranged through in vertical direction inside; the upper part of the base 1 is provided with a support 12.

[0039] The powder bowl 2 is detachably placed at the bottom of the base 1, and has an opening at the top, which can seal and cover the bottom end of the channel 11.

[0040] The powder pressing head 3 is accommodated in the channel 11 and sealingly cooperates with the inner wall of the channel 11, and the powder pressing head 3 is opposite to the top opening of the powder bowl 2. The powder pressing head 3 can move up and down in the channel 11 and can rotate around its own axis. Specifically, the powder pressing head 3 is hollow inside and has an open top. The inner wall of the powder pressing head 3 is provided with at least two guide grooves 31 arranged in a circumferential direction, and each guide groove 31 extends in a spiral shape. The bottom wall of the powder pressing head 3 is provided with a mounting column 32. Figure 3 As shown, the powder pressing head 3 is composed of two inner and outer parts, and the guide grooves 31 are formed between the two parts. The bottom end of the guide groove 31 extends to the bottom wall of the powder pressing head 3, so that the extension length of the guide groove 31 is long enough.

[0041] The driving mechanism 4 is used to drive the powder pressing head 3 to move up and down and rotate relative to the base 1, and comprises a lifting seat 41, a first elastic member 42 and a driving assembly 43.

[0042] Specifically, the lifting seat 41 is accommodated in the powder pressing head 3, and the circumferential wall of the lifting seat 41 is provided with at least two guide blocks 411 corresponding to the guide grooves 31. Each guide block 411 is inserted into the corresponding guide groove 31 and can slide along the extension direction of the guide groove 31. The bottom wall of the lifting seat 41 is provided with a mounting groove 412 corresponding to the mounting column 32.

[0043] The first elastic member 42 is a compression spring, and the bottom end of the compression spring is sleeved on the mounting column 32. The top end of the compression spring is accommodated in the mounting groove 412, so that the powder pressing head 3 always has a downward tendency relative to the lifting seat 41.

[0044] The driving assembly 43 comprises a first connecting rod 431, a second connecting rod 432, a handle 433 and a second elastic member 434. The first end of the first connecting rod 431 is rotatably connected to the top of the lifting seat 41. The first end of the second connecting rod 432 is rotatably connected to the second end of the first connecting rod 431, and the second end is rotatably connected to the top of the support 12 through a rotating shaft 4321. The first end of the handle 433 is connected to the end of one of the rotating shafts 4321, and the second end is used for being pinched by a user to drive the second connecting rod 432 to rotate about the second end, thereby driving the lifting seat 41 to lift through the first connecting rod 431. The second elastic member 434 is a torsion spring, which is sleeved on one of the rotating shafts 4321. The first end of the torsion spring is connected to the second end of the second connecting rod 432, and the second end of the torsion spring is connected to the support 12, so that the second connecting rod 432 always has a tendency to drive the lifting seat 41 to rise through the first connecting rod 431.

[0045] Under the driving of the above-mentioned driving assembly 43, the lifting seat 41 lifts relative to the base 1, so as to drive the powder pressing head 3 to synchronously lift to the first state and the second state and rotate about the axis thereof in the second state, so that the powder pressing device has at least two states:

[0046] In the first state, as shown in Figure 4 , the powder pressing head 3 rises to the limit position and is separated from the powder bowl 2. The guide block 411 is located at the top end of the guide groove 31, and the lifting seat 41 is away from the bottom wall inside the powder pressing head 3;

[0047] In the second state, as shown in Figure 5 , the powder pressing head 3 descends to the limit position and is tightly pressed on the top of the powder inside the powder bowl 2. The guide block 411 is located at the bottom end of the guide groove 31, and the lifting seat 41 abuts on the bottom wall inside the powder pressing head 3. The mounting column 32 extends into the mounting groove 412.

[0048] The working principle of the embodiment is as follows:

[0049] (1) When the powder needs to be pressed, the powder bowl 2 is first sealed and covered at the bottom end of the channel 11, as shown in Figure 4 , in the first state, the powder pressing head 3 rises to the limit position and is separated from the powder bowl 2. Then the handle 433 is pinched forward to drive the second connecting rod 432 to rotate about the second end, thereby driving the lifting seat 41 to descend through the first connecting rod 431, so as to drive the powder pressing head 3 to synchronously descend, until the powder pressing head 3 descends to the limit position and is tightly pressed on the top of the powder inside the powder bowl 2, to realize the powder pressing operation. At this time, the lifting seat 41 continues to descend, overcomes the elastic force of the first elastic member 42, and each guide block 411 gradually moves downward in the guide groove 31 of the powder pressing head 3, thereby driving the powder pressing head 3 to rotate about the axis thereof. The powder can be pressed more uniformly and tightly until the lifting seat 41 moves to Figure 5In the second state shown, the guide blocks 411 are located at the bottom end of the guide grooves 31, the lifting seat 41 abuts against the bottom wall inside the powder pressing head 3, and the powder pressing head 3 stops rotating;

[0050] (2) After the powder pressing is completed, the handle 433 is released, and the handle 433 is reset under the elastic force of the second elastic member 434, and the lifting seat 41 is lifted, in the process, the guide blocks 411 are gradually moved upward in the guide grooves 31 of the powder pressing head 3, and under the elastic force of the first elastic member 42, the lifting seat 41 is away from the bottom wall inside the powder pressing head 3, until the guide blocks 411 are located at the top end of the guide grooves 31, at this time, the lifting seat 41 continues to rise, and the powder pressing head 3 is synchronously lifted and reset.

[0051] In the embodiment, by setting the guide grooves 311 extending in a spiral shape inside the powder pressing head 3, setting the guide blocks 411 on the lifting seat 41 to guide and cooperate with the guide grooves 311, and combining the first elastic member 42 and the driving assembly 43 to drive the lifting seat 41 to lift, the powder pressing head 3 can be synchronously lifted to the first state and the second state and rotated around the axis in the second state, the powder can be pressed more uniformly and tightly, the above driving mode has the following advantages:

[0052] (1) High technical reliability;

[0053] (2) Easy to assemble, low process requirement, low cost, and convenient for industrial use;

[0054] (2) Using mechanical driving components, reciprocating compression and rotating through a track, making the coffee powder more compact and uniform, which is beneficial to coffee extraction.

Claims

1. A powder pressing device, comprising: Base (1); The powder bowl (2) is detachably placed at the bottom of the base (1) and has an opening at the top; The powder pressing head (3) is mounted on the machine base (1) and can rotate relative to the machine base (1), facing the top opening of the powder bowl (2); as well as Drive mechanism (4) for driving the powder pressing head (3) to rise, fall and rotate relative to the base (1) so that the powder pressing device has at least two states: In the first state, the powder pressing head (3) rises to its limit position and disengages from the powder bowl (2); In the second state, the powder pressing head (3) descends to its limit position and presses tightly against the top of the powder inside the powder bowl (2); The powder pressing head (3) is characterized by being hollow inside and having an open top, and having a spirally extending guide groove (31) on the peripheral wall inside the powder pressing head (3); The drive mechanism (4) includes: The lifting seat (41) is housed in the powder pressing head (3), and a guide block (411) corresponding to the guide groove (31) is protruding on its peripheral wall. The guide block (411) is inserted into the guide groove (31) and can slide along the extension direction of the guide groove (31). The first elastic element (42) acts between the lifting seat (41) and the powder pressing head (3) so that the powder pressing head (3) always has a tendency to move downward relative to the lifting seat (41); as well as The drive assembly (43) is connected to the lifting seat (41) to drive the lifting seat (41) to rise and fall relative to the base (1), thereby driving the powder pressing head (3) to rise and fall synchronously to the first state and the second state, and to rotate around its own axis in the second state.

2. The powder pressing device according to claim 1, characterized in that: The number of guide grooves (31) is at least two, and they are arranged at intervals along the circumference of the powder pressing head (3). The guide blocks (411) correspond one-to-one with the guide grooves (31), and each guide block (411) is inserted into the corresponding guide groove (31).

3. The powder pressing device according to claim 1, characterized in that: The bottom wall inside the powder pressing head (3) is provided with a mounting post (32), and the bottom wall of the lifting seat (41) is provided with a mounting groove (412) corresponding to the mounting post (32). The first elastic element (42) is a compression spring, the bottom end of which is sleeved on the mounting post (32), and the top end of which is accommodated in the mounting groove (412).

4. The powder pressing device according to claim 3, characterized in that: The bottom end of the guide groove (31) extends to the bottom wall inside the powder pressing head (3). In the second state, the guide block (411) is located at the bottom end of the guide groove (31), and the lifting seat (41) abuts against the bottom wall inside the powder pressing head (3).

5. The powder pressing device according to claim 4, characterized in that: In the second state, the mounting post (32) extends into the mounting groove (412).

6. The powder pressing device according to claim 1, characterized in that: The drive component (43) includes: The first link (431) is rotatably connected at its first end to the lifting seat (41); The second link (432) has its first end rotatably connected to the second end of the first link (431), and its second end rotatably connected to the base (1); and The handle (433) is connected to the second end of the second link (432) for the user to pry open to drive the second link (432) to rotate around its second end and thereby drive the lifting seat (41) to rise and fall through the first link (431).

7. The powder pressing device according to claim 6, characterized in that: The drive assembly (43) further includes a second elastic element (434), which acts between the second link (432) and the base (1) so that the second link (432) always has the tendency to drive the lifting seat (41) upward through the first link (431).

8. The powder pressing device according to claim 7, characterized in that: The second end of the second connecting rod (432) is rotatably connected to the base (1) via a rotating shaft (4321). The second elastic element (434) is a torsion spring, which is sleeved on the rotating shaft (4321). The first end of the torsion spring is connected to the second end of the second connecting rod (432), and the second end of the torsion spring is connected to the base (1).

9. The powder pressing device according to any one of claims 1 to 8, characterized in that: The machine base (1) has a vertically arranged channel (11) inside, and the powder bowl (2) is sealed and covered at the bottom of the channel (11).

10. The powder pressing device according to claim 9, characterized in that: The powder pressing head (3) is housed in the channel (11) and is sealed to the inner circumferential wall of the channel (11).

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