CN112641333A - Variable speed hand coffee machine - Google Patents

Abstract

Translated fromChinese

本发明公开了一种变速手摇咖啡机，包括底座、齿轮、第一齿轮杆、第三轴承、第六杯头螺丝、第四轴承、第二齿轮杆、第五轴承和接粉手柄，本发明通过将水通过入水盖上端的进水口倒入泵体和透明缸体之间的空间储存，通过反向旋摇手柄，而抽动活塞向上工作移动，从而产生了吸力，把水从泵体与透明缸体中的储存空间倒吸进泵体内腔；水吸入内腔后，再顺向旋摇手柄，无论手柄摇动速度快慢，通过变速箱能够稳定调节速度，并操控活塞下压，从而将水由内腔向圆周上排布若干个倒三角出水口的止回分流胶逼溢出，进而水滴漏于接粉手柄后，将咖啡粉溶解成即喝咖啡，达到了能够快速对咖啡进行冲煮。

The invention discloses a variable-speed hand-cranked coffee machine, comprising a base, a gear, a first gear rod, a third bearing, a sixth cup head screw, a fourth bearing, a second gear rod, a fifth bearing and a powder receiving handle. In the invention, the water is poured into the space between the pump body and the transparent cylinder body through the water inlet on the upper end of the water inlet cover for storage, and the handle is reversely rotated, and the twitching piston moves upwards, thereby generating suction, which removes the water from the pump body and the transparent cylinder. The storage space in the transparent cylinder is sucked back into the cavity of the pump body; after the water is sucked into the inner cavity, the handle is rotated in the same direction, no matter how fast the handle is shaken, the speed can be stably adjusted through the gearbox, and the piston can be controlled to press down, so that the water From the inner cavity to the circumference, the anti-return shunt glue with a number of inverted triangular water outlets is forced to overflow, and then the water drips into the powder receiving handle, and the coffee powder is dissolved into ready-to-drink coffee, so that the coffee can be quickly brewed.

Description

Variable speed hand coffee machine

Technical Field

The invention relates to the field of hand-operated coffee machines, in particular to a variable-speed hand-operated coffee machine.

Background

Coffee is a beverage made of roasted coffee beans, which is a main beverage popular in the world together with cocoa and tea, coffee trees belong to evergreen small trees of the family rubiaceae, coffee for daily drinking is made by matching coffee beans with various cooking devices, the coffee beans refer to kernels in coffee tree fruits and are roasted by a proper method, the taste of a cup of standard coffee should not be bitter, each step of operation is rigorously performed by a qualified coffeemaker when making coffee, and finally, the coffee presented to a guest presents different degrees of sweetness, acidity, mellow degree or cleanliness in taste.

Coffee often needs to use the coffee machine in the preparation process, and traditional coffee machine adopts the mode of electronic processing, is difficult to reach the target when going out and individualized preparation coffee, and it is very inconvenient to use, and current hand coffee machine simple structure to difficult fast boil coffee.

Disclosure of Invention

Accordingly, to address the above-mentioned deficiencies, the present invention provides a variable speed hand coffee maker.

The invention is realized by constructing a variable-speed hand-operated coffee machine, which comprises a base, a water overflow cup, a cup holder, a first cup screw, a support rod, a pressure gauge, a middle layer plate, a flow-equalizing mesh enclosure, a bolt, a first meson, a non-return flow-dividing glue, a seal ring, a throat plug, a check valve, a pump body, a handrail, a second cup screw, a stop block, a bearing fixing block, a shaft, a first bearing, a first flat screw, a rack, a third cup screw, a piston, an O-shaped ring, a cup-shaped ring, a fourth cup screw, an upper layer plate, a transparent cylinder body, a water inlet cover, a stuffing screw, a handle, a second meson, a rocker, a fifth cup screw, a press block, a second flat screw, a side cover plate, a second bearing, a gear, a first gear rod, a third bearing, a sixth cup screw, a fourth bearing, a second gear rod, a fifth bearing and a powder receiving handle, wherein the water overflow cup is inserted into the inner side, the cup stand tightly extends into the middle of the top of the base, the support rod is fastened at the rear end of the top of the base through a first cup screw, one end of the support rod, far away from the base, is fixedly inserted at the rear end of the bottom of the middle layer plate, a pressure gauge is fixed at a groove at the front end of the middle layer plate, the flow equalizing net cover is fixedly locked with the lower end of the inner part of the middle layer plate through a bolt, a first meson is sleeved on the bolt, the non-return flow-dividing glue is inserted and hermetically fixed with the upper end of the bolt, the non-return flow-dividing glue is bonded with the inner side edge of the sealing ring, a throat plug is fixed at the right end of the top of the sealing ring, a check valve is arranged at the top of the throat plug, the pump body is hermetically fixed with the inner side of the top of the middle layer plate, a transparent cylinder body is sleeved on the upper end of the pump body, the upper layer plate is fixed, a cup-shaped ring is arranged in a cavity in the upper plate, the O-shaped ring and the top of the cup-shaped ring are fixed in a sealing manner, a piston is arranged at the top of the O-shaped ring, a rack is fastened in the cavity in the upper plate through a third cup screw and penetrates through the middle of the piston, the O-shaped ring and the cup-shaped ring, a bearing fixing block is locked and fixed with the left end in the upper plate through a first flat screw, a first bearing is fixed at the left end of the bearing fixing block, a shaft is in rotating fit with the inner side of the first bearing, a stop block is fixedly connected with the upper side of the front end of the rack, the rack is locked and fixed with the inner side of the bottom of the handrail through a sixth cup screw, a third bearing is fixed at the right upper end of the rack, the first gear rod is pivoted with the inner side of the third bearing, a gear is in rotating fit with the right end of, the side cover plate is fastened at the right end of the upper plate through a second flat head screw, the handrail is locked and fixed with the top of the upper plate through a second cup head screw, the second gear rod rotates synchronously along with the upper end of the rocker, the rocker is locked and fixed with the right end of the second gear rod through a fifth cup head screw, the left end of the fifth cup head screw is sleeved with a joint press block, the fourth bearing is fixedly connected with the left lower end of the side cover plate, and the second gear rod is in rotating fit with the inner side of the fourth bearing.

Preferably, one end, far away from the fourth bearing, of the second gear rod is movably nested on the inner side of the fifth bearing, the handle is fixedly locked with the right lower end of the rocker through a plug screw, and the upper end of the plug screw is sleeved with the second meson.

Preferably, the gear is meshed with the upper end of the second gear rod, and the powder receiving handle is connected with the bottom of the middle layer plate in a buckling mode.

Preferably, the left side and the right side of the top of the base are provided with grooves, and the grooves are semicircular.

Preferably, the transparent cylinder body is in a transparent cylinder shape, and a cavity is arranged in the middle of the transparent cylinder body.

Preferably, the number of the support rods is two, and the support rods are symmetrically distributed along the left side and the right side of the rear side of the top of the base.

Preferably, four fourth cup head screws are arranged, and the fourth cup head screws are oppositely arranged along four corners of the top of the middle layer plate and the bottom of the upper layer plate.

Preferably, the cup stand is cylindrical, and openings are equidistantly distributed on the edge of the upper end of the cup stand.

Preferably, the second and third bearings are the same size and the fourth and fifth bearings are the same size.

Preferably, the rear end of the rack is provided with a tooth angle, and the rack is in meshing transmission with the left end of the first gear rod through the tooth angle at the rear end.

Preferably, the transparent cylinder body is made of quartz, and has the advantages of high temperature resistance, small thermal expansion coefficient, high insulation, corrosion resistance and the like.

Preferably, the sealing ring and the throat plug are made of silica gel, and have high thermal stability, good heat insulation, moisture resistance and shock resistance.

The invention has the following advantages: the present invention provides, by improvement, a variable speed hand coffee maker having the following improvements over the same type of device:

according to the variable-speed hand-operated coffee machine, water is poured into a space between the pump body and the transparent cylinder body through the water inlet at the upper end of the water inlet cover to be stored, the piston is pulled to work and move upwards through the reverse rotary handle, so that suction force is generated, and the water is sucked into the inner cavity of the pump body from the storage space in the pump body and the transparent cylinder body; after water is sucked into the inner cavity, the handle is rotated in the forward direction, the speed can be stably adjusted through the gearbox no matter how fast the handle is rotated, the piston is controlled to be pressed downwards, water is forced to overflow through the non-return split glue which is distributed on the inner cavity to the circumference and is provided with a plurality of inverted-triangle water outlets, then water drops are leaked behind the powder receiving handle, coffee powder is dissolved into coffee, and the coffee can be brewed quickly.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic front view of the variable speed hand coffee maker of the present invention;

FIG. 3 is a schematic view of an exploded structure inside the laminate of the present invention;

FIG. 4 is a schematic view of the internal explosion structure of the upper panel of the present invention;

fig. 5 is a schematic diagram of the explosion structure of the rocker of the invention.

Wherein: the water-saving water pump comprises a base-1, a groove-101, an overflow cup-2, a cup holder-3, a first cup screw-4, a support rod-5, a pressure gauge-6, a middle plate-7, a flow equalizing mesh enclosure-8, a bolt-9, a first meson-10, a non-return shunt adhesive-11, a seal ring-12, a choke plug-13, a check valve-14, a pump body-15, an armrest-16, a second cup screw-17, a stop block-18, a bearing fixing block-19, a shaft-20, a first bearing-21, a first flat screw-22, a rack-23, a third cup screw-24, a piston-25, an O-shaped ring-26, a cup ring-27, a fourth cup screw-28, an upper plate-29, a transparent cylinder body-30, a transparent cylinder body-28, a water pump body, a, A water inlet cover-31, a ramming screw-32, a handle-33, a second meson-34, a rocker-35, a fifth cup head screw-36, a pressing block-37, a second flat head screw-38, a side cover plate-39, a second bearing-40, a gear-41, a first gear rod-42, a third bearing-43, a sixth cup head screw-44, a fourth bearing-45, a second gear rod-46, a fifth bearing-47 and a powder receiving handle-48.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 5, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a variable-speed hand-operated coffee maker, which comprises abase 1, anoverflow cup 2, acup holder 3, a first cup screw 4, asupport rod 5, apressure gauge 6, amiddle layer plate 7, a flow equalizingmesh enclosure 8, abolt 9, afirst medium 10, a checkflow distribution adhesive 11, asealing ring 12, a throat plug 13, acheck valve 14, apump body 15, ahandrail 16, asecond cup screw 17, a stop block 18, a bearing fixing block 19, a shaft 20, a first bearing 21, a firstflat screw 22, a rack 23, a third cup screw 24, a piston 25, an O-shaped ring 26, a cup-shaped ring 27, afourth cup screw 28, anupper layer plate 29, atransparent cylinder body 30, awater inlet cover 31, afilling screw 32, ahandle 33, a second medium 34, arocker 35, a fifth cup screw 36, a pressing block 37, a secondflat screw 38, aside cover plate 39, a second bearing 40, agear 41, afirst gear rod 42, a third bearing 43, A sixthcup head screw 44, a fourth bearing 45, a second gear rod 46, a fifth bearing 47 and apowder receiving handle 48, wherein thewater overflow cup 2 is inserted into the inner side of the top of thebase 1, thecup holder 3 tightly extends into the middle of the top of thebase 1, thesupport rod 5 is fastened at the rear end of the top of thebase 1 through the first cup head screw 4, one end of thesupport rod 5 away from thebase 1 is inserted and fixed at the rear end of the bottom of themiddle plate 7, apressure gauge 6 is fixed at the groove of the front end of themiddle plate 7, a flow-equalizingmesh enclosure 8 is locked and fixed with the lower end of the inner part of themiddle plate 7 through abolt 9, thebolt 9 is sleeved with afirst meson 10, acheck split rubber 11 is inserted and fixed with the upper end of thebolt 9, thecheck split rubber 11 is bonded with the inner side edge of thethroat sealing ring 12, a plug 13 is fixed at the right end of the top of the sealing, the upper end of thepump body 15 is sleeved with atransparent cylinder 30, anupper plate 29 is fixed with the four corners of the top of amiddle plate 7 through afourth cup screw 28, awater inlet cover 31 tightly extends into the inner side of a water inlet at the right front end of the top of theupper plate 29, a cup-shaped ring 27 is arranged in a cavity in theupper plate 29, an O-shaped ring 26 is fixed with the top of the cup-shaped ring 27 in a sealing manner, a piston 25 is arranged at the top of the O-shaped ring 26, a rack 23 is fastened in the cavity in theupper plate 29 through a third cup screw 24, the rack 23 penetrates through the middle of the piston 25, the O-shaped ring 26 and the cup-shaped ring 27, a bearing fixing block 19 is locked and fixed with the left end in theupper plate 29 through a firstflat screw 22, a first bearing 21 is fixed at the left end of the bearing fixing block 19, a shaft 20 is matched with the inner side of the first bearing 21 in a rotating manner, a stop block 18, the right upper end of the rack 23 is fixed with a third bearing 43, thefirst gear rod 42 is pivoted with the inner side of the third bearing 43, thegear 41 is in running fit with the right end of thefirst gear rod 42, thefirst gear rod 42 is pivoted with the inner side of the second bearing 40, theside cover plate 39 is fastened at the right end of theupper plate 29 through a secondflat screw 38, thearmrest 16 is locked and fixed with the top of theupper plate 29 through asecond cup screw 17, the second gear rod 46 rotates synchronously with the upper end of therocker 35, therocker 35 is locked and fixed with the right end of the second gear rod 46 through a fifth cup screw 36, the left end of the fifth cup screw 36 is sleeved with a pressing block 37, the fourth bearing 45 is fixedly connected with the left lower end of theside cover plate 39, and the second gear rod 46 is in running fit with the inner side of the fourth bearing 45.

Furthermore, one end of the second gear rod 46, which is far away from the fourth bearing 45, is movably nested inside the fifth bearing 47, thehandle 33 is locked and fixed with the right lower end of therocker 35 through theplugging screw 32, and the upper end of theplugging screw 32 is sleeved with the second meson 34.

Further, thegear 41 is meshed with the upper end of the second gear rod 46, and thepowder receiving handle 48 is connected with the bottom of themiddle layer plate 7 in a buckling mode.

Further, the left side and the right side of the top of thebase 1 are provided withgrooves 101, and thegrooves 101 are semicircular, so that thecup head 3 can be conveniently taken out.

Further, thetransparent cylinder body 30 is in a transparent cylindrical shape, and a cavity is formed in the middle of thetransparent cylinder body 30, so that the observation of the working condition inside thetransparent cylinder body 30 is facilitated.

Further, thesupport rods 5 are arranged in two, and thesupport rods 5 are symmetrically distributed along the left side and the right side of the rear side of the top of thebase 1, so that the effect of stably supporting the middle-layer plate 7 is facilitated.

Furthermore, fourfourth cup screws 28 are provided, and thefourth cup screws 28 are oppositely provided along four corners of the top of themiddle plate 7 and the bottom of theupper plate 29.

Furthermore, thecup stand 3 is cylindrical, and openings are equidistantly distributed on the edge of the upper end of thecup stand 3, so that the effect of collecting residual droplets is facilitated.

Further, the second bearing 40 and the third bearing 43 are the same size, and the fourth bearing 45 and the fifth bearing 47 are the same size, which is favorable for the smooth rotation of thefirst gear rod 42 and the second gear rod 46.

Further, the rear end of the rack 23 is provided with a tooth angle, and the rack 23 is meshed with the left end of thefirst gear rod 42 through the tooth angle at the rear end for transmission, so that the rack 23 is driven to move.

Further, thetransparent cylinder 30 is made of quartz, and has the advantages of high temperature resistance, small thermal expansion coefficient, high insulation, corrosion resistance and the like.

Furthermore, thesealing ring 12 and the throat plug 13 are made of silica gel, and have high thermal stability, good thermal insulation, moisture resistance and shock resistance.

The invention provides a variable-speed hand-operated coffee machine through improvement, which operates as follows;

firstly, before use, the variable-speed hand-operated coffee machine is horizontally placed, so that thebase 1 fixedly supports the variable-speed hand-operated coffee machine;

secondly, when in use, the ground coffee powder is arranged inside thepowder receiving handle 48, and then thepowder receiving handle 48 is fixedly clamped at the bottom of themiddle layer plate 7;

thirdly, thewater inlet cover 31 is opened, and then stored in the space between thepump body 15 and thetransparent cylinder 30, and thewater inlet cover 31 is closed;

fourthly, thehandle 16 is held by one hand, thehandle 33 is held by the other hand, thehandle 33 is rotated reversely, the second gear rod 46 is driven by therocker 35 to rotate by thehandle 33, so that thefirst gear rod 42 is driven by the second gear rod 46 through thegear 41 to rotate inside the second bearing 40 and the third bearing 43, the rack 23 is driven by thefirst gear rod 42 to move upwards, the piston 25 is moved upwards by the rack 23, and suction force is generated, so that water is sucked into the inner cavity of thepump body 15 from the storage space in thepump body 15 and thetransparent cylinder 30;

fifthly, after water is sucked into the inner cavity, thehandle 33 is rotated clockwise, so that thehandle 33 drives the second gear rod 46 to rotate through therocker 35, the second gear rod 46 drives thefirst gear rod 42 to rotate on the inner sides of the second bearing 40 and the third bearing 43 through thegear 41, thefirst gear rod 42 drives the rack 23 to move towards the lower end, the piston 25 is controlled to press downwards, and the water is forced to overflow through thecheck shunt glue 11 which is distributed on the inner cavity to the circumference and is provided with a plurality of inverted-triangle water outlets;

sixthly, after the water drips and leaks to thepowder receiving handle 48, the coffee powder is dissolved into coffee.

The invention provides a variable-speed hand-operated coffee machine through improvement, water is poured into a space between apump body 15 and atransparent cylinder body 30 through a water inlet at the upper end of awater inlet cover 31 for storage, a piston 25 is drawn to work and move upwards through areverse rotation handle 33, so that suction force is generated, and the water is sucked into an inner cavity of thepump body 15 from a storage space in thepump body 15 and thetransparent cylinder body 30; after water is sucked into the inner cavity, thehandle 33 is rotated in the forward direction, no matter how fast thehandle 33 is rotated, the speed can be stably adjusted through the gearbox, and the piston 25 is controlled to press down, so that thenon-return split glue 11 which is distributed on the plurality of inverted-triangular water outlets from the inner cavity to the circumference is forced to overflow, and then water drips and leaks on thepowder receiving handle 48, coffee powder is dissolved into instant coffee, and the aim of quickly brewing coffee is fulfilled.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, the specific connection mode of each part adopts the conventional means of bolt and rivet, welding and the like mature in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a variable speed hand coffee machine, its structure includes base (1), overflow cup (2), saucer (3), first cup screw (4), bracing piece (5), manometer (6), well plywood (7), the screen panel that flow equalizes (8), bolt (9), first meson (10), non return reposition of redundant personnel glue (11), sealing washer (12), choke plug (13), check valve (14), the pump body (15), handrail (16), second cup screw (17), dog (18), bearing fixed block (19), axle (20), first bearing (21), first flat screw (22), rack (23), third cup screw (24), piston (25), O shape circle (26), cup shape circle (27), fourth cup screw (28), upper plate (29), transparent cylinder body (30), income water cover (31), fill and beat screw (32), The cup holder is characterized by comprising a handle (33), a second meson (34), a rocker (35), a fifth cup head screw (36), a pressing block (37), a second flat head screw (38), a side cover plate (39), a second bearing (40), a gear (41), a first gear rod (42), a third bearing (43), a sixth cup head screw (44), a fourth bearing (45), a second gear rod (46), a fifth bearing (47) and a powder receiving handle (48), wherein the inner side of the top of the base (1) is inserted with the water overflowing cup (2), the cup holder (3) tightly extends into the middle of the top of the base (1), the supporting rod (5) is fastened at the rear end of the top of the base (1) through the first cup head screw (4), one end of the supporting rod (5) far away from the base (1) is fixedly inserted at the rear end of the bottom of the middle layer plate (7), a pressure gauge (6) is fixed at a groove at the front end of the middle layer plate, the flow equalizing net cover (8) is locked and fixed with the inner lower end of the middle layer plate (7) through a bolt (9), the bolt (9) is sleeved with a first meson (10), a non-return shunt adhesive (11) is spliced with the upper end of the bolt (9) and is fixed in a sealing mode, the non-return shunt adhesive (11) is bonded with the inner side edge of a sealing ring (12), a throat plug (13) is fixed at the right end of the top of the sealing ring (12), a check valve (14) is arranged at the top of the throat plug (13), a pump body (15) is fixed with the inner side of the top of the middle layer plate (7) in a sealing mode, a transparent cylinder body (30) is sleeved at the upper end of the pump body (15), the upper layer plate (29) is fixed with the four corners of the top of the middle layer plate (7) through a fourth cup head screw (28), a water inlet cover (31) tightly extends into the inner side of a water inlet at the right front end of the top of the upper, the O-shaped ring (26) is fixed with the top of the cup-shaped ring (27) in a sealing mode, the piston (25) is arranged at the top of the O-shaped ring (26), the rack (23) is fastened to a cavity in the upper plate (29) through a third cup head screw (24), the rack (23) penetrates through the middle of the piston (25), the O-shaped ring (26) and the cup-shaped ring (27), the bearing fixing block (19) is locked and fixed with the left end in the upper plate (29) through a first flat head screw (22), a first bearing (21) is fixed at the left end of the bearing fixing block (19), a shaft (20) is in rotating fit with the inner side of the first bearing (21), the block (18) is fixedly connected with the upper side of the front end of the rack (23), the rack (23) is locked and fixed with the inner side of the bottom of the handrail (16) through a sixth cup head screw (44), and a third bearing (43) is fixed at the right upper end of, the first gear rod (42) is pivoted with the inner side of the third bearing (43), the gear (41) is in rotating fit with the right end of the first gear rod (42), and the first gear rod (42) is pivoted with the inner side of the second bearing (40), the side cover plate (39) is fastened at the right end of the upper plate (29) through a second flat head screw (38), the handrail (16) is locked and fixed with the top of the upper plate (29) through a second cup head screw (17), the second gear rod (46) synchronously rotates along with the upper end of the rocker (35), and the rocker (35) is locked and fixed with the right end of the second gear rod (46) through a fifth cup head screw (36), the left end of the fifth cup head screw (36) is sleeved with a joint pressing block (37), the fourth bearing (45) is fixedly connected with the left lower end of the side cover plate (39), and the second gear lever (46) is rotationally fitted to the inside of the fourth bearing (45).

2. A variable speed hand coffee machine according to claim 1, wherein: one end, far away from the fourth bearing (45), of the second gear rod (46) is movably nested on the inner side of the fifth bearing (47), the handle (33) is fixedly locked with the right lower end of the rocker (35) through a plug screw (32), and the upper end of the plug screw (32) is sleeved with the second meson (34).

3. A variable speed hand coffee machine according to claim 1, wherein: the gear (41) is meshed with the upper end of the second gear rod (46), and the powder receiving handle (48) is connected with the bottom of the middle layer plate (7) in a buckling mode.

4. A variable speed hand coffee machine according to claim 1, wherein: the left side and the right side of the top of the base (1) are provided with grooves (101), and the grooves (101) are semicircular.

5. A variable speed hand coffee machine according to claim 1, wherein: the transparent cylinder body (30) is in a transparent cylinder shape, and a cavity is arranged in the middle of the transparent cylinder body (30).

6. A variable speed hand coffee machine according to claim 1, wherein: the two supporting rods (5) are arranged, and the supporting rods (5) are symmetrically distributed along the left side and the right side of the rear side of the top of the base (1).

7. A variable speed hand coffee machine according to claim 1, wherein: the number of the fourth cup head screws (28) is four, and the fourth cup head screws (28) are arranged along the top of the middle layer plate (7) and the four corners of the bottom of the upper layer plate (29) oppositely.

8. A variable speed hand coffee machine according to claim 1, wherein: the cup stand (3) is cylindrical, and openings are distributed on the edge of the upper end of the cup stand (3) at equal intervals.

9. A variable speed hand coffee machine according to claim 1, wherein: the second bearing (40) and the third bearing (43) are the same size, and the fourth bearing (45) and the fifth bearing (47) are the same size.

10. A variable speed hand coffee machine according to claim 1, wherein: the rear end of the rack (23) is provided with a tooth angle, and the rack (23) is in meshing transmission with the left end of the first gear rod (42) through the tooth angle at the rear end.

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