CN220735130U - Portable bean grinding coffee machine - Google Patents

Abstract

The embodiment of the utility model provides a portable bean grinding coffee machine, and belongs to the technical field of coffee machines. The coffee grinder comprises: a coffee cup; a coffee screen disposed within the coffee cup; a coffee grinder assembly detachably connected to the coffee cup for grinding coffee beans into coffee powder and feeding the ground coffee powder into the coffee screen; the water tank assembly comprises a water storage tank and a dripping valve arranged on the water storage tank, the water storage tank is detachably connected with the coffee cup, and when the water storage tank is connected with the coffee cup, the water storage tank can move relative to the coffee cup and drive the dripping valve to move relative to the water storage tank so as to open or close, so that the water storage tank is communicated with the coffee cup or the communication between the water storage tank and the coffee cup is blocked. The portable bean grinding coffee machine meets the requirements of users for drinking fresh coffee during outdoor activities.

Description

Portable bean grinding coffee machine

Technical Field

The utility model belongs to the technical field of coffee machines, and particularly relates to a portable bean grinding coffee machine.

Background

The coffee grinder in the market is generally heavy and can only be used indoors, and although some portable coffee machines are available in the market and are convenient for users to use outdoors, the portable coffee machines generally place coffee powder in a cup body or a coffee bag in the cup body in advance, and water is added into the cup body and heated by a heating device in the cup body if the users want to drink coffee. For example, chinese patent publication No. CN219042661U discloses a portable coffee machine comprising a water tank, a main machine and a container, the main machine being provided with a water pump and being connected to a detachable brewing constraint, wherein the brewing constraint is adapted to hold a coffee powder bag, a heating device is arranged in the water tank, and if a user wants to drink coffee, the heated water in the water tank needs to flow into the brewing constraint to make coffee. The portable coffee machine of the type can not drink fresh coffee, and the water needs to be heated by electrifying, so that the portable coffee machine is inconvenient to use.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model provides a portable bean grinding coffee machine. The portable bean grinding coffee machine meets the requirements of users for drinking fresh coffee during outdoor activities.

The technical scheme adopted by the embodiment of the utility model is as follows:

a portable coffee bean grinder, the coffee bean grinder comprising:

a coffee cup;

a coffee screen disposed within the coffee cup;

a coffee grinder assembly detachably connected to the coffee cup for grinding coffee beans into coffee powder and feeding the ground coffee powder into the coffee screen;

the water tank assembly comprises a water storage tank and a dripping valve arranged on the water storage tank, the water storage tank is detachably connected with the coffee cup, and when the water storage tank is connected with the coffee cup, the water storage tank can move relative to the coffee cup and drive the dripping valve to move relative to the water storage tank so as to open or close, so that the water storage tank is communicated with the coffee cup or the communication between the water storage tank and the coffee cup is blocked.

Further, the water storage tank is characterized by comprising a tank body and a tank cover, wherein the outer periphery of the bottom wall of the tank body extends downwards to form a tank skirt edge part, the tank skirt edge part encloses a tank body concave cavity, the dripping valve is arranged on the bottom wall of the tank body and extends into the tank body concave cavity, and the tank skirt edge part is connected with the coffee cup in a threaded fit mode;

when the water storage tank rotates clockwise by taking the axis of the coffee cup as a rotation center, the coffee filter screen can be contacted with the dripping valve and push the dripping valve to move upwards so as to be opened; when the water storage tank rotates anticlockwise by taking the axis of the coffee cup as a rotation center, the drop valve can move downwards and be closed.

Further, the diapire of box be equipped with the intercommunication external world with the cylindricality passageway of the inside of box, the drop valve includes guide post, brace table and cover respectively and locate sealing washer, sealed pad and the first spring on the guide post, the brace table is located the bottom of guide post, be equipped with the water conservancy diversion passageway in the guide post, the guide post wears to locate in the cylindricality passageway to make its top and sealed pad stretch into in the box, the periphery wall of guide post with inject annular channel between the inner peripheral wall of cylindricality passageway, the sealing washer shutoff annular channel, first spring is used for making the box with brace table elastic connection, and to the drop valve exerts down moving first effort in order to make sealed pad seals annular channel's entry, when the drop valve upward movement, sealed pad breaks away from annular channel's entry, so that water in the box can flow into through the water conservancy diversion passageway in the coffee filter screen. This structure guarantees that the water tank subassembly is not connected with the coffee cup and when water tank subassembly and coffee cup are about to separate, water in the box can not flow.

Further, the quantity of sealing washer is a plurality of, be equipped with on the periphery wall of water conservancy diversion post a plurality of respectively with the apopore of water conservancy diversion passageway intercommunication, a plurality of apopore and a plurality of the sealing washer is followed respectively the axial direction interval setting of water conservancy diversion post, and a plurality of apopore and a plurality of the sealing washer distributes in turn, during the upward movement of drop valve, a plurality of the sealing washer can get into in proper order in the box, and make water in the box flows into in the water conservancy diversion passageway through the apopore that is located the both sides of the sealing washer of getting into the box. The structure can ensure that water in the box body can not enter the annular channel when entering the diversion channel.

Further, the outer periphery of the supporting table extends outwards along the radial direction of the flow guiding column, and when the water storage tank is connected with the coffee cup, the outer periphery of the supporting table abuts against the outer periphery of the open end of the coffee filter screen. The structure design is ingenious, the coffee filter screen is utilized to push the dripping valve, a corresponding structure is not required to be arranged on the coffee cup to push the dripping valve, and the structure can be simplified.

Further, a first bone position is arranged on the outer peripheral wall of the coffee filter screen, a second bone position is arranged on the inner wall of the coffee cup, and when the coffee filter screen is arranged in the coffee cup, the second bone position is abutted with the first bone position so as to support the coffee filter screen. The coffee filter screen is simple in structure and convenient to put in or take out.

Further, grind beans subassembly include the host computer subassembly and with host computer subassembly detachable connection's grinding chamber subassembly, the host computer subassembly include power component and locate drive shaft on the power component, grind the chamber subassembly including grinding the cavity and locating grind the part in the cavity, grind the cavity and be used for placing the coffee beans, the host computer subassembly with when grinding the chamber subassembly and being connected, the drive shaft stretch into in the grinding cavity with grind the part transmission and be connected, be used for driving grind the part rotates in order to grind the coffee beans. This structure ensures that the driving force of the driving shaft can be transmitted to the grinding member when the grinding chamber assembly is connected with the main assembly.

Further, the outer periphery of the bottom of the main machine component extends downwards to form a main machine skirt edge part, the main machine skirt edge part encloses a main machine concave cavity, the open end of the grinding cavity extends into the main machine concave cavity, and the main machine skirt edge part is used for being detachably connected with the grinding cavity and the coffee cup respectively. The structure can ensure that the coffee powder can not leak out of the coffee cup when the coffee powder is ground by the bean grinding assembly when the bean grinding assembly is connected with the coffee cup.

Further, the grinding part comprises a grinding shaft, a grinding knife and a conical grinding part, wherein the grinding knife and the conical grinding part are respectively arranged on the grinding shaft, the grinding chamber assembly further comprises a grinding disc, a grinding channel which is communicated with the outside and the grinding cavity, the grinding channel is arranged at the bottom of the grinding cavity, the grinding disc is arranged on the inner wall of the grinding channel, the conical grinding part extends into the grinding channel, and a powder leakage channel is defined between the outer peripheral wall of the conical grinding part and the inner peripheral wall of the grinding disc. The conical grinding part rotates relative to the grinding disc to further grind the coffee powder entering the grinding channel so as to make the coffee powder finer.

Further, the conical grinding part is in sliding connection with the grinding shaft and can move along the grinding shaft, the grinding part further comprises a second spring and an adjusting knob, the second spring is used for enabling the grinding knife to be elastically connected with the conical grinding part and applying second acting force for enabling the conical grinding part to move along a direction away from the grinding knife, the adjusting knob is connected with the grinding shaft in a threaded fit mode, and the adjusting knob is located on one side, away from the grinding knife, of the conical grinding part. The gap between the outer peripheral wall of the conical grinding part and the inner peripheral wall of the grinding disc can be adjusted at any time through the mutual matching of the second spring and the adjusting knob so as to ensure the grinding effect.

Compared with the prior art, the embodiment of the utility model has the beneficial effects that:

the portable bean grinding coffee machine provided by the embodiment is characterized in that the water tank component and the bean grinding component are respectively prepared for the coffee cup, and the water tank component and the bean grinding component can be detachably connected with the coffee cup respectively. The coffee powder can be ground on site by the bean grinding component, when the water tank component is connected with the coffee cup, water in the water tank can flow into the coffee filter screen to brew the coffee powder, and the portable bean grinding coffee machine is convenient for users to carry outdoors and use, so that the requirements of users for drinking fresh coffee during outdoor activities are met.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings illustrate various embodiments by way of example in general and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive of the present apparatus or method.

FIG. 1 is an exploded view of a portable coffee bean grinder according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a bean grinding assembly according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of an assembled bean grinding assembly, coffee cup and coffee screen according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of an embodiment of the utility model with a coffee screen assembled in a coffee cup;

fig. 5 is a cross-sectional view of a tank assembly according to an embodiment of the present utility model;

FIG. 6 is a cross-sectional view of a cistern assembly with a drip valve according to an embodiment of the present utility model being raised;

fig. 7 is an exploded view of a tank assembly according to an embodiment of the present utility model;

fig. 8 is a cross-sectional view of an assembled water tank assembly, coffee cup and coffee screen according to an embodiment of the present utility model.

In the figure: 1-a coffee cup; 10-a second bone site; 2-coffee screen; 20-a first bone site; 3-a bean grinding assembly; 30-a grinding chamber assembly; 300-grinding cavity; 301-grinding channels; 302-grinding disc; 303-grinding the shaft; 304-grinding the knife; 305-a second spring; 306-a cone mill component; 307-an adjustment knob; 31-a host component; 310-a power component; 311-drive shaft; 312-a main body skirt portion; 313-button; 314-control panel; 4-a water tank assembly; 40-a water storage tank; 400-box body; 401-case cover; 402-a tank skirt portion; 41-a drip valve; 410-a gasket; 411-a flow-guiding column; 412-a first spring; 413—a support table; 414-a diversion channel; 415-a drain hole; 416-sealing ring; 417-cylindrical channels.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present utility model, the present utility model is described in detail below with reference to the accompanying drawings and detailed description.

The embodiment of the utility model provides a portable bean grinding coffee machine, which mainly comprises four parts, namely a coffee cup 1, a coffee filter screen 2, a bean grinding assembly 3 and a water tank assembly 4, as shown in figure 1.

The coffee screen 2 is arranged in the coffee cup 1 and is used for receiving coffee powder.

The bean grinding assembly 3 is detachably connected to the coffee cup 1. When the bean grinding assembly 3 is connected to the coffee cup 1, the bean grinding assembly 3 is capable of grinding coffee beans into coffee powder and feeding the ground coffee powder onto the coffee screen 2 inside the cup.

The water tank assembly 4 includes a water storage tank 40 and a drip valve 41 provided on the water storage tank 40. The water storage tank 40 is detachably connected with the coffee cup 1. When the water storage tank 40 is connected with the coffee cup 1, the water storage tank 40 can move relative to the coffee cup 1 and drive the drip valve 41 to move relative to the water storage tank 40 to open or close so as to enable the water storage tank 40 to be communicated with the coffee cup 1 or cut off the communication between the water storage tank 40 and the coffee cup 1.

When a user needs to brew coffee outdoors, the bean grinding assembly 3 can be connected with the coffee cup 1, the bean grinding assembly 3 is taken down after coffee powder is ground, the water tank assembly 4 is installed finally, and hot water stored in the water tank assembly 4 flows into the coffee filter screen 2 to brew the coffee powder.

The portable bean grinding coffee machine provided by the embodiment is provided with the water tank assembly 4 and the bean grinding assembly 3 respectively, and the water tank assembly 4 and the bean grinding assembly 3 can be detachably connected with the coffee cup 1 respectively. The coffee grinder assembly 3 can grind coffee powder at present, and meanwhile, when the water tank assembly 4 is connected with the coffee cup 1, water in the water tank 40 can flow into the coffee filter screen 2 to brew the coffee powder, and the portable coffee grinder is convenient for users to carry outdoors and use, and meets the requirements of users for drinking fresh coffee in outdoor activities.

As shown in fig. 5 to 8, in some embodiments, the water storage tank 40 includes a tank body 400 and a tank cover 401, the tank cover 401 is provided with a water inlet and a water cover capable of blocking or closing the water inlet, a user can directly open the water cover to fill hot water into the tank body 400 for storage, and the material of the tank body can be a thermal insulation material. The cover 401 is screw-coupled to the case 400, and the cover 401 can be easily removed to clean the inside of the case 400.

Corresponding sealing elements are respectively arranged at the joint of the box body 400 and the box cover 401 and between the water cover and the water inlet to seal so as to prevent water in the box body 400 from leaking.

Further, the outer periphery of the bottom wall of the case 400 extends downward to form a case skirt portion 402, and a space surrounded by the case skirt portion 402 is a case cavity. The drop valve 41 is connected with the bottom wall of the box 400, and the drop valve 41 extends into the cavity of the box, so that the overall appearance of the box 400 is improved, and the drop valve 41 can be prevented from being touched when a user carries the water tank assembly 4.

The box skirt portion 402 and the coffee cup 1 of this embodiment may be connected by a screw-fit manner, for example, an external screw thread is provided on an outer peripheral wall of the box skirt portion 402, and an internal screw thread that mates with the external screw thread is provided on an inner wall of the coffee cup 1.

When the water storage tank 40 rotates clockwise by taking the axle center of the coffee cup 1 as the rotation center, the coffee screen 2 can be contacted with the drip valve 41 and push the drip valve 41 to move upwards and open, and at the moment, the water storage tank 40 is communicated with the coffee cup 1; when the water storage tank 40 rotates in the counterclockwise direction with the axis of the coffee cup 1 as the rotation center, the drip valve 41 can be moved downward and closed to shut off the communication between the water storage tank 40 and the coffee cup 1. The structure can enable the water storage tank 40 to open the dripping valve 41 when rotating relative to the coffee cup 1, so that water in the tank 400 automatically flows into the coffee filter screen 2, and the operation is convenient.

As shown in fig. 5 and 6, in some embodiments, the bottom wall of the case 400 is provided with a cylindrical passage 417 communicating the outside with the inside of the case 400, the cylindrical passage 417 protruding downward from the outside of the case 400.

The drop valve 41 includes a guide post 411, a support table 413, a sealing pad 410, a sealing ring 416 and a first spring 412, which are respectively sleeved on the guide post 411. The support table 413 is disposed at the bottom end of the guide column 411, and is integrated with the guide column 411. Gasket 410 is positioned on top of flow post 411 and gasket 416 is positioned between gasket 410 and support table 413.

In this embodiment, the outer diameter of the flow guiding column 411 is smaller than the inner diameter of the cylindrical channel 417, the flow guiding column 411 is inserted into the cylindrical channel 417, and an annular channel is defined between the outer peripheral wall of the flow guiding column 411 and the inner peripheral wall of the cylindrical channel 417.

The guide post 411 is arranged in the cylindrical channel 417 in a penetrating way, the sealing ring 416 is pressed to seal the annular channel to prevent water in the box 400 from flowing out through the annular channel, and the sealing gasket 410 on the guide post 411 extends into the box 400 and is used for sealing an inlet of the annular channel to prevent water in the box 400 from flowing into the annular channel.

The bottom end of the first spring 412 abuts against the support table 413, and the top end of the first spring 412 abuts against the outside of the bottom wall of the case 400, which is used to elastically connect the drip valve 41 and the case 400, and the first spring 412 applies a downward first force to the drip valve 41 to seal the gasket 410 against the inlet of the annular passage. The gasket 410 is able to always seal the inlet of the annular channel under the action of the first spring 412 when the water tank assembly 4 is not connected to the coffee cup 1.

Further, the diversion column 411 of the present embodiment is provided with a diversion channel 414, and when the drip valve 41 moves upwards, water in the tank 400 can flow into the coffee screen 2 through the diversion channel 414.

In some embodiments, the diversion channel 414 is disposed inside the diversion column 411, the outer peripheral wall of the diversion column 411 is provided with a plurality of water drain holes 415, the plurality of water drain holes 415 are respectively communicated with the diversion channel 414, and water in the tank 400 can enter the diversion channel 414 through the water drain holes 415 respectively.

The sealing rings 416 sleeved on the guide post 411 are also a plurality of, and a plurality of drain holes 415 and a plurality of sealing rings 416 are respectively arranged at intervals along the axial direction of the guide post 411. The plurality of drain holes 415 and the plurality of seal rings 416 are alternately arranged.

As shown in fig. 6, when the drip valve 41 of the present embodiment moves upward, the plurality of sealing rings 416 can sequentially enter the tank 400 along with the movement of the flow guiding columns 411, and at this time, the water in the tank 400 flows into the flow guiding channels 414 through the water draining holes 415 located at two sides of the sealing ring 416 entering the tank 400. The user can control the amount of the water flow through the water outlet 415 into the tank 400 according to the number of rotations of the water storage tank 40 relative to the coffee cup 1. For example, every time the water storage tank 40 rotates one turn, a drain hole 415 is formed into the tank 400.

It should be noted that, when the drop valve 41 moves upward to the limit position, at least one seal ring 416 of the plurality of seal rings 416 is still located in the annular channel and is close to the inlet of the annular channel, so that water is ensured not to enter the annular channel when entering the diversion channel 414.

The number of the drain holes 415 and the seal rings 416 in the present embodiment is not particularly limited, and may be determined according to the size of the entire cup body, etc.

As shown in fig. 5-7, in some embodiments, the outer periphery of the support table 413 at the bottom of the deflector column 411 extends outwardly in the radial direction of the deflector column 411 such that the outer diameter of the support table 413 is equal to the outer diameter of the open end of the coffee screen 2.

When the water storage tank 40 is connected with the coffee cup 1, the outer peripheral bottom of the support table 413 is just abutted against the outer periphery of the open end of the coffee screen 2. Along with the rotation of the water storage tank 40 in the clockwise direction, as the drip valve 41 and the coffee screen 2 do not rotate along with the water storage tank, the coffee screen 2 can apply upward acting force to the drip valve 41 to push the drip valve 41 to move upwards, the structural design is ingenious, the drip valve 41 is pushed by utilizing the coffee screen 2, and the corresponding structure on the coffee cup 1 is not needed to push the drip valve 41.

Preferably, the connection between the support table 413 and the guide post 411 is recessed downward to form an annular cavity surrounding the guide post 411, and the bottom of the first spring 412 may extend into the annular cavity to ensure stability of the first spring 412.

As shown in fig. 4, in some embodiments, a first bone site 20 is provided on the outer peripheral wall of the coffee screen 2, the first bone site 20 being provided around the coffee screen 2. A second bone position 10 is arranged on the inner wall of the coffee cup 1 near the cup mouth. When the coffee screen 2 is placed in the coffee cup 1, the second bone position 10 is abutted with the first bone position 20 so as to support the whole coffee screen 2 through the second bone position 10, and the coffee screen 2 is simple in structure and convenient to put in or take out.

As shown in fig. 2 and 3, in some embodiments, the grinding assembly 3 includes a main body assembly 31 and a grinding chamber assembly 30 detachably connected to the main body assembly 31. The grinding chamber assembly 30 is located below the main body assembly 31, and when the coffee grinder assembly 3 is connected with the coffee cup 1, the grinding chamber assembly 30 extends into the coffee screen 2, and the main body assembly 31 is located outside the coffee cup 1.

The main unit 31 includes a power unit 310 and a driving shaft 311 provided on the power unit 310, and the power unit 310 may be a motor. The grinding chamber assembly 30 includes a grinding chamber 300 for holding coffee beans and a grinding member, and the grinding chamber assembly 30 may be separated from the main body assembly 31 before grinding coffee powder, and then the coffee beans are placed into the grinding chamber 300.

The grinding component is disposed in the grinding cavity 300, and when the main unit component 31 is connected with the grinding chamber component 30, the driving shaft 311 on the power component 310 extends into the grinding cavity 300 to be in transmission connection with the grinding component, and the power component 310 can drive the grinding component to rotate in the grinding cavity 300 to grind coffee beans into coffee powder.

The button 313 is further arranged on the peripheral wall of the host assembly 31, the button 313 is electrically connected with the control board 314 on the host assembly 31, the control board 314 is also electrically connected with the power component 310, and a user can start the power component 310 by pressing the button 313, so that the operation of the user is facilitated.

The inside of the host assembly 31 of this embodiment is further provided with a battery (not shown in the figure), the battery is respectively used for supplying power to the control board 314 and the power component 310, the host assembly 31 is provided with a charging port, and when the battery is not powered, a user can charge the battery in time through the charging port.

As shown in fig. 2, in some embodiments, the outer periphery of the bottom wall of the main unit 31 extends downward to form a main unit skirt portion 312, the space surrounded by the main unit skirt portion 312 is a main unit cavity, the open end of the grinding cavity 300 extends into the main unit cavity, and the outer periphery of the open end of the grinding cavity 300 abuts against the bottom wall of the main unit 31, so that the ground coffee can be prevented from leaking out of the coffee cup 1 when the coffee grinder 3 grinds the coffee powder.

The main body skirt portion 312 of the present embodiment is configured to be detachably connected to the grinding chamber 300 and the coffee cup 1, for example, the outer peripheral wall of the grinding chamber 300 is connected to the inner peripheral wall of the main body skirt portion 312 by a screw or a snap, and the inner wall of the coffee cup 1 is also connected to the outer peripheral wall of the main body skirt portion 312 by a screw or a snap.

As further shown in fig. 2, in some embodiments, the grinding component includes a grinding shaft 303, and a grinding blade 304 and a cone grinding component 306, respectively, disposed on the grinding shaft 303.

The grinding shaft 303 is vertically arranged and coaxial with the grinding cavity 300, the grinding knife 304 extends along the radial direction of the grinding shaft 303, when the grinding chamber assembly 30 is connected with the main machine assembly 31, the driving shaft 311 of the main machine assembly 31 is inserted into the top end of the grinding shaft 303, and thus, when the driving shaft 311 rotates, the grinding shaft 303 can be driven to synchronously rotate, so that coffee beans can be ground into coffee powder through the grinding knife 304 thereon.

The grinding chamber assembly 30 further comprises a grinding disc 302 and a grinding channel 301 communicated with the outside and the grinding cavity 300, the grinding channel 301 is arranged at the bottom of the grinding cavity 300, the grinding channel 301 is coaxial with the grinding shaft 303, and the bottom of the grinding shaft 303 extends into the grinding channel 301. The ground coffee in the grinding chamber 300 enters the grinding channel 301.

Further, the grinding disc 302 is disposed on the inner wall of the grinding channel 301, and the conical grinding member 306 on the grinding shaft 303 is shaped like a truncated cone, and the outer peripheral surface of the conical grinding member 306 is close to the inner peripheral surface of the grinding disc 302 and defines a powder leakage channel. When the grinding shaft 303 rotates, the coffee powder entering the grinding passage 301 can be further ground by rotating the cone grinding part 306 relative to the grinding disc 302 so that the coffee powder is finer and finer, and the ground coffee powder can fall into the coffee screen 2 through the powder leakage passage, as shown in fig. 4.

As shown in fig. 2, in some embodiments, the cone grinding component 306 of this embodiment is slidably connected to the grinding shaft 303, and can move up and down along the grinding shaft 303 to adjust the position of the cone grinding component relative to the grinding disc 302, so as to adjust the size of the powder leakage channel.

The grinding component of the embodiment further comprises a second spring 305 and an adjusting knob 307, wherein the second spring 305 is sleeved on the grinding shaft 303, one end of the second spring is abutted against the grinding cutter 304, and the other end is abutted against the top end of the conical grinding component 306, so that the grinding cutter 304 and the conical grinding component 306 are elastically connected. The second spring 305 is used to apply a second force to the conical grinding member 306 that moves it in a direction away from the grinding blade 304.

Further, an adjusting knob 307 is sleeved on the grinding shaft 303 and is positioned below the conical grinding member 306. The adjusting knob 307 is connected with the grinding shaft 303 in a threaded manner, the adjusting knob 307 is abutted with the bottom end of the conical grinding part 306, the conical grinding part 306 can be driven to move along the grinding shaft 303 by rotating the adjusting knob 307, so that the outer peripheral wall of the conical grinding part 306 is close to the inner peripheral wall of the grinding disc 302 through the mutual matching of the second spring 305 and the adjusting knob 307, and the size of a gap or a powder leakage channel between the outer peripheral wall of the conical grinding part 306 and the inner peripheral wall of the grinding disc 302 can be adjusted at any time, so that the grinding effect is ensured.

The above embodiments are only exemplary embodiments of the present utility model and are not intended to limit the present utility model, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this utility model will occur to those skilled in the art, and are intended to be within the spirit and scope of the utility model.

Claims (10)

1. A portable coffee bean grinder, the coffee bean grinder comprising:

a coffee cup (1);

a coffee strainer (2) provided in the coffee cup (1);

a grinding assembly (3) removably connected to the coffee cup (1) for grinding coffee beans into coffee powder and feeding the ground coffee powder into the coffee screen (2);

the water tank assembly (4) comprises a water storage tank (40) and a dripping valve (41) arranged on the water storage tank (40), wherein the water storage tank (40) is detachably connected with the coffee cup (1), and when the water storage tank (40) is connected with the coffee cup (1), the water storage tank (40) can move relative to the coffee cup (1) and drive the dripping valve (41) to move relative to the water storage tank (40) so as to open or close, so that the water storage tank (40) is communicated with the coffee cup (1) or the communication between the water storage tank (40) and the coffee cup (1) is blocked.

2. A portable coffee grinder as claimed in claim 1, wherein the water storage tank (40) comprises a tank body (400) and a tank cover (401), an outer periphery of a bottom wall of the tank body (400) extends downwards to form a tank body (400) skirt portion, the tank body (400) skirt portion encloses a tank body concave cavity, the drip valve (41) is arranged on the bottom wall of the tank body (400) and extends into the tank body concave cavity, and the tank body (400) skirt portion is connected with the coffee cup (1) in a threaded fit manner;

when the water storage tank (40) rotates clockwise by taking the axle center of the coffee cup (1) as a rotation center, the coffee filter screen (2) can be contacted with the dripping valve (41) and push the dripping valve (41) to move upwards so as to be opened;

when the water storage tank (40) rotates in the anticlockwise direction by taking the axis of the coffee cup (1) as a rotation center, the dripping valve (41) can move downwards and be closed.

3. A portable coffee grinder as set forth in claim 2, wherein the bottom wall of the case (400) is provided with a cylindrical passage (417) communicating the outside with the inside of the case (400), the drip valve (41) comprises a guide post (411), a support table (413), and a sealing ring (416), a gasket (410) and a first spring (412) respectively sleeved on the guide post (411), the support table (413) is provided at the bottom end of the guide post (411), the guide post (411) is internally provided with a guide passage (414), the guide post (411) is inserted into the cylindrical passage (417) and the gasket (410) thereon is extended into the case (400), an annular passage is defined between the outer peripheral wall of the guide post (411) and the inside of the cylindrical passage (417), the sealing ring (416) seals the annular passage, the first spring (412) is used for making the case (400) and the support table (413) connect with the annular passage (411) and applying a force to the annular valve (410) to move downward to the annular passage (41), so that water in the tank (400) can flow into the coffee screen (2) through the diversion channel (414).

4. A portable coffee grinder as claimed in claim 3, wherein the number of said sealing rings (416) is plural, a plurality of water draining holes (415) respectively communicating with said water guiding channels (414) are provided on the outer peripheral wall of said water guiding column (411), a plurality of said water draining holes (415) and a plurality of said sealing rings (416) are respectively provided at intervals along the axial direction of said water guiding column (411), and a plurality of said water draining holes (415) and a plurality of said sealing rings (416) are alternately distributed, and when said drop valve (41) moves upward, a plurality of said sealing rings (416) can sequentially enter said box (400) and water in said box (400) flows into said water guiding channels (414) through the water draining holes (415) located on both sides of said sealing rings (416) in said box (400).

5. A portable coffee grinder as claimed in claim 3, characterized in that the outer periphery of the support table (413) extends outwards in the radial direction of the deflector column (411), the outer periphery of the support table (413) bearing against the outer periphery of the open end of the coffee screen (2) when the water storage tank (40) is connected to the coffee cup (1).

6. A portable coffee grinder as claimed in claim 1, wherein a first bone site (20) is provided on the outer peripheral wall of the coffee screen (2), a second bone site (10) is provided on the inner wall of the coffee cup (1), and the second bone site (10) abuts against the first bone site (20) to support the coffee screen (2) when the coffee screen (2) is placed in the coffee cup (1).

7. A portable coffee grinder as claimed in claim 1, wherein the bean grinding assembly (3) comprises a main machine assembly (31) and a grinding chamber assembly (30) detachably connected with the main machine assembly (31), the main machine assembly (31) comprises a power component (310) and a driving shaft (311) arranged on the power component (310), the grinding chamber assembly (30) comprises a grinding cavity (300) and a grinding component arranged in the grinding cavity (300), the grinding cavity (300) is used for placing coffee beans, and the driving shaft (311) stretches into the grinding cavity (300) to be in transmission connection with the grinding component when the main machine assembly (31) is connected with the grinding chamber assembly (30) so as to drive the grinding component to rotate so as to grind the coffee beans.

8. A portable coffee grinder as claimed in claim 7, wherein the outer periphery of the bottom of said main body assembly (31) extends downwardly to form a main body skirt portion (312), said main body skirt portion (312) defining a main body cavity, said grinding chamber (300) having an open end extending into said main body cavity, said main body skirt portion (312) being adapted for detachable connection with said grinding chamber (300) and said coffee cup (1), respectively.

9. A portable coffee grinder as claimed in claim 7, wherein said grinding means comprises a grinding shaft (303), a grinding blade (304) and a conical grinding means (306) provided on said grinding shaft (303), respectively, said grinding chamber assembly (30) further comprises a grinding disc (302) and a grinding channel (301) communicating with the outside and with said grinding chamber (300), said grinding channel (301) being provided at the bottom of said grinding chamber (300), said grinding disc (302) being provided on the inner wall of said grinding channel (301), said conical grinding means (306) extending into said grinding channel (301), and a powder leakage channel being defined between the outer peripheral wall of said conical grinding means (306) and the inner peripheral wall of said grinding disc (302).

10. A portable coffee grinder as claimed in claim 9, wherein said conical grinding member (306) is slidably connected to said grinding shaft (303) and is movable along said grinding shaft (303), said grinding member further comprising a second spring (305) and an adjustment knob (307), said second spring (305) being adapted to elastically connect said grinding blade (304) to said conical grinding member (306) and to exert a second force on said conical grinding member (306) for moving it in a direction away from said grinding blade (304), said adjustment knob (307) being connected to said grinding shaft (303) by means of a screw-fit, said adjustment knob (307) being located on the side of said conical grinding member (306) facing away from said grinding blade (304).