CN209564011U

CN209564011U - A kind of hand coffee maker with water heating boiler

Info

Publication number: CN209564011U
Application number: CN201822173237.6U
Authority: CN
Inventors: 邱猛
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2019-11-01
Anticipated expiration: 2028-12-24

Abstract

The utility model discloses a kind of hand coffee makers with water heating boiler, including hollow cylinder body and it is set to the intracorporal Coffee screen net of the cylinder, the bottom end of the cylinder body is equipped with the pedestal for compressing the Coffee screen net, the upper end sealing installation of the cylinder body is equipped with water storing bin, the lower end of the water storing bin is removably equipped with water-stop sheet, the water-stop sheet is equipped with check valve, water temperature sensing device and hollow conductive structure are equipped in the water storing bin, mold heating tube is inserted in the conductive structure, the upper end of the water storing bin is equipped with water compression module.The hand coffee maker with water heating boiler of the utility model is integrated with water boiling function, easy to use without additionally using water heater when squeezing coffee, moreover, the water heating structure design of this coffee machine is rationally, it is easy to manufacture, it is at low cost.

Description

A kind of hand coffee maker with water heating boiler

Technical field

The utility model relates to espresso machines, more specifically, it relates to which a kind of hand with water heating boiler is made coffee Machine.

Background technique

Currently, the function that portable espresso machine and water do not heat, the professional Italian type coffee with water heating function Coffee body product is big, and price is high, just when work, warms up machinery and preparation needs one hour or so, be unable to satisfy individual and brew It is required that；There are shortcomings for profession espresso machine in the prior art, are not easy to personal or family and use；Such as: power consumption is very big, Because to heat cauldron water and driving water pump, when maintenance cost, periodically to clean；Because accessory is more, high failure rate, electronic component it is more and For a long time in hot operation, easily break down；Volume is excessive, may not carry.

According to people's lives demand, be badly in need of it is a kind of it is small in size, easy to operate, good portability, can have to ground coffee Effect squeezing or extraction, taste espresso machine in good taste.

Utility model content

The technical problems to be solved in the utility model is the above-mentioned deficiency for the prior art, and the purpose of this utility model is A kind of compact layout, beauty are provided, the hand coffee maker with water heating boiler of water is quickly heated.

To achieve the above object, the utility model provides a kind of hand coffee maker with water heating boiler, including hollow Cylinder body and be set to the intracorporal Coffee screen net of the cylinder, the bottom end of the cylinder body is equipped with the pedestal for compressing the Coffee screen net, institute The upper end sealing installation for stating cylinder body is equipped with water storing bin, and the lower end of the water storing bin is removably equipped with water-stop sheet, the water-stop sheet It is equipped with check valve, water temperature sensing device and hollow conductive structure are equipped in the water storing bin, is plugged in the conductive structure There is mold heating tube, the upper end of the water storing bin is equipped with water compression module.

Further, the conductive structure is the heat-conducting cylinder being inserted into the water storing bin, the mold heating tube inserting In heat-conducting cylinder；The water temperature sensing device includes the heat transfer cylinder being erected in the water storing bin and the temperature in heat transfer cylinder Sensor, the temperature sensor are connect with the conductor wire of the mold heating tube.

Further, the side wall of the barrel of the heat-conducting cylinder and water storing bin is tightly connected, and the temperature sensor is heat Quick switch.

Further, gasket seal is equipped between the water-stop sheet in the water storing bin and the top of the cylinder body, it is described The lower end of water storing bin inner wall is equipped with first positioning step adaptable with the top surface of the water-stop sheet, gasket seal, the second positioning Step；The upper end of the water storing bin inner wall is equipped with holding tank.

As a further improvement, it is equipped in the cylinder body positioned at the top of the Coffee screen net and divides the network of rivers.

It being improved as further, the water compression module includes dismountable sealing cover for being set to water storing bin top, The sealing cover is equipped with flow control valve, pressure relief device and detection device, and the input end of the flow control valve is detachable Be connected with high pressure gas bullet bottle, between the input end of the flow control valve and the high pressure gas bullet bottle be equipped with corkage connector；Institute Sealing cover is stated equipped with shield.

Further, the flow control valve is set at the center of the sealing cover, the pressure relief device and detection Device is set to the edge of sealing cover, and the flow control valve is 90 ° of flow control valves.

Further, the input end of 90 ° of flow control valve sides is equipped with the one 90 ° of adapter of opening upwards, The high pressure gas bullet bottle and corkage connector are vertically arranged and pass through the one 90 ° of adapter and be connected with 90 ° of flow control valves；Institute Stating detection device includes connection-peg, the 2nd 90 ° of adapter and pressure gauge, in the opening at the top of the 2nd 90 ° of adapter is directed toward Side, the rear end of the pressure gauge connect with the 2nd 90 ° of adapter and are arranged in the top of 90 ° of flow control valves, institute The side wall for stating shield is equipped with the receiving hole being adapted with the pressure gauge；The side of the shield is removably equipped with water The handle that plain cloth is set.

Further, top cover is installed, the top cover is equipped with outer with the high pressure gas bullet bottle on the shield The adaptable location hole of wall.

It is improved as further, the top of the pedestal is equipped with the plug division connecting with the cylinder body, the sealing The bottom end of lid is socketed in the top of the cylinder body；Gradually narrow the edge being equipped with the Coffee screen net in the top of the plug division The edge of adaptable support portion, the Coffee screen net is equipped with turnup structure, and the Coffee screen net is hung on the top of the pedestal It holds and is pressed between pedestal and cylinder body.

Beneficial effect

Compared with prior art, the hand coffee maker with water heating boiler of the utility model has the beneficial effect that: this The hand coffee maker with water heating boiler of utility model, modularization assembling, hand-held is compact-sized, and total is substantially It is in the form of a column, outer wall is round and smooth, stainless steel body, good hand touch, and intensity is high, is unlikely to deform damage, long service life；Can in connect not Same high voltage power source meets professional espresso machine and carries out indices required when coffee brewing work, and pressurization is conveniently；This The hand coffee maker with water heating boiler of utility model can be observed complete to hot water pressure, pressure alteration in brewing process Process increases contact area using vortex air intake or water intake mode in course of exerting pressure, applies face is become with the point pressure lived Pressure, keeps extraction process more stable, produces more stable, and extraction coffee liquid mellowness is dense, fully achieves large-scale desk-top Italy Formula coffee machine brews effect, and manufacturing cost is low；It is integrated with water boiling function, without additionally using water heater when squeezing coffee, is made With convenient, moreover, the water heating structure design of this coffee machine is rationally, it is easy to manufacture, it is at low cost.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the hand coffee maker with water heating boiler of the utility model；

Fig. 2 is the structure sectional view of cylinder body and cylinder body assembly in the utility model；

Fig. 3 is the structure top view of water compression module in the utility model；

Fig. 4 is the schematic diagram of internal structure of water compression module in the utility model；

Fig. 5 is the structure sectional view of water storing bin in the utility model；

Fig. 6 is the structural perspective of shield in the utility model；

Fig. 7 is the structure enlarged cross-sectional view of the utility model in the base；

Fig. 8 is the structure enlarged cross-sectional view of the utility model in the base.

In figure: 1, cylinder body；2, pedestal；201, plug division；202, support portion；3, water compression module；4, Coffee screen net；5, it flows Adjustable valve；501, adjusting knob；502, valve inlet；6, high pressure gas bullet bottle；7, detection device；701, connection-peg；702, 2 90 ° of adapters；703, pressure gauge；8, shield；9, sealing cover；10, handle；11, connector is opened；12, the one 90 ° of switching Head；13, top cover；14, pressure relief device；15, water storing bin；16, water-stop sheet；17, check valve；18, mold heating tube；19, water temperature passes Induction device；20, conductive structure；21, divide the network of rivers；22, the first positioning step；23, gasket seal；24, the second positioning step；25, Holding tank.

Specific embodiment

With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical Novel protection scope is not limited by the specific implementation.

Specific embodiment of the present utility model is such that as shown in figs. 1-7, and a kind of hand with water heating boiler rushes coffee Coffee machine, the Coffee screen net 4 including hollow cylinder body 1 and in cylinder body 1, the bottom end of cylinder body 1 are equipped with the bottom for compressing Coffee screen net 4 Seat 2, Coffee screen net 4 are bowl structure, and the lower end out of cylinder body 1 of Coffee screen net 4 is inserted into, by the connection of pedestal 2 and cylinder body 1 by coffee Coffee strainer 4 is compressed with cylinder body 1 and is fixed together, and the mesh size of Coffee screen net 4 is the size of standard, Coffee screen net 4 and cylinder Sealing ring is equipped between body 1；The upper end sealing installation of cylinder body 1 is equipped with water storing bin 15, and the lower end of water storing bin 15 is removably equipped with Water-stop sheet 16, water-stop sheet 16 are equipped with check valve 17, and check valve 17 is the tubular type check valve being vertically arranged, the taper of check valve 17 Spool is located at top, carries out quick pressure releasing, check valve 17 to cylinder body 1 convenient for being manually pressed down against taper valve core by a pin It can be connected to cylinder body 1 and water storing bin 15, be equipped with water temperature sensing device 19 and hollow conductive structure 20, thermally conductive knot in water storing bin 15 Mold heating tube 18 is inserted in structure 20, mold heating tube 18 is the electric heating equipment being commonly used in mold processing, mold Heating tube 1 can work in the case where voltage is less than 36 volts, and use is safe；Mold heating tube 18 is in water storing bin 15 Water is heated, and since conductive structure 20 is stainless steel structure, will not be polluted to water quality, water temperature sensing device 19 detects Water is heated to need temperature that will automatically control the stopping heating of mold heating tube 18, additionally it is possible to by being arranged on 15 outer wall of water storing bin The instruments such as thermometer show the variation of water temperature, realize that manual control mold heating tube 18 powers off；The upper end of water storing bin 15 is equipped with Water compression module 3, water compression module 3, which applies high pressure gas to the hot water in water storing bin 15, squeezes hot water by the spool of check valve 17 It opens, enters hot water in cylinder body 1, the ground coffee on Coffee screen net 4 is squeezed, after hot water carries out squeezing extraction to ground coffee It is slowly filtered out through Coffee screen net 4, coffee can be picked up using the lower section that coffee cup is placed into pedestal 2, obtain espresso coffee；It stores Each part on sump 15 can form a module, be assembled with the part comprising modules on cylinder body 1, and realization is quickly torn open Dress, it is easy to carry；This hand coffee maker with water heating boiler is integrated with water boiling function, uses when squeezing coffee without additional Water heater, it is easy to use, moreover, the water heating structure design of this coffee machine is rationally, and it is easy to manufacture, it is at low cost.

In the present embodiment, conductive structure 20 is the heat-conducting cylinder being inserted into water storing bin 15, and mold heating tube 18 is inserted into In heat-conducting cylinder, water storing bin 15 is cylinder-like structure, and heat-conducting cylinder is radially inserted into water storing bin 15, the both ends of heat-conducting cylinder and storage 15 sealing welding of sump；Water temperature sensing device 19 includes the heat transfer cylinder being erected in water storing bin 15 and the temperature in heat transfer cylinder Sensor, heat transfer cylinder is stainless steel structure, and positioned at the side of heat-conducting cylinder, the conductor wire of temperature sensor and mold heating tube 18 connects It connects, the barrel of heat-conducting cylinder and the side wall of water storing bin 15 are tightly connected, and temperature sensor is thermoswitch, passes through temperature-sensitive thermoswitch The energization or power-off of mold heating tube 18 are controlled, entire control circuit is simple.

In the present embodiment, gasket seal 23, sealing are equipped between the water-stop sheet 16 in water storing bin 15 and the top of cylinder body 1 Gasket 23 is hollow structure, and gasket seal 23 is food grade plastic seal washer, and the edge of gasket seal 23 can be by water-stop sheet Edge be pressed on the bottom end of water storing bin 15, prevent leak；The lower end of 15 inner wall of water storing bin is equipped with and water-stop sheet 16, gasket seal The first adaptable positioning step 22 of 23 top surface, the second positioning step 24, the upper end of cylinder body 1 and the lower end of water storing bin 15 pass through Gasket seal 23 is pressed on the second positioning step 24 by helicitic texture locking, the upper end of cylinder body 1, the first positioning step 22 Height is identical as the rear end of gasket seal 23, and the lower end of 15 inner cavity of water storing bin is shoulder hole structure, easy to process；In water storing bin 15 The upper concave end of wall is equipped with holding tank 25, and 25 outer annular groove of holding tank increases the capacity of water storing bin 15, can accommodate more Water reduces the height of water storing bin 15, keeps total more compact, occupy little space, easy to carry.

When the air pressure in gasket seal 23 is excessive or check valve 17 damages, and water-stop sheet 16 is downwards to gasket seal 23 Excessive compression is carried out, at this moment there is between the edge of water-stop sheet 16 and the inner wall of water storing bin 15 gap, high pressure gas can be made from seam Gap, which enters, carries out pressure release in cylinder body, use is safer.

In the present embodiment, it is equipped in cylinder body 1 positioned at the top of Coffee screen net 4 and divides the network of rivers 21, convex is equipped in cylinder body 1 Platform, the setting point network of rivers 21 can be such that high pressure water uniformly squeezes to coffee muffin on Coffee screen net 4, promote the mouth of coffee Sense.

In the present embodiment, water compression module 3 includes dismountable sealing cover 9 for being set to 15 top of water storing bin, sealing cover 9 It is equipped with flow control valve 5, pressure relief device 14 and detection device 7, the input end of flow control valve 5 is removably connected with height Bullet bottle 6 of calming the anger opens connector 11, is used for equipped with corkage connector 11 between the input end and high pressure gas bullet bottle 6 of flow control valve 5 Puncturing high pressure gas bullet bottle 6 is connected to high pressure gas with flow control valve 5, is made in high pressure gas bullet bottle 6 by adjusting flow control valve 5 High pressure gas enter water storing bin 15；Sealing cover 9 is equipped with shield 8, flow control valve 5, pressure relief device 14 and detection dress It sets 7 to be mounted on inside shield 8, plays positioning, protection.

Flow control valve 5 is provided in this coffee machine, can to it is slow adjust enter cylinder body 1 high pressure gas (or High-pressure water heating) speed, slowly to cylinder body 1 inflate, thus realize slowly improve cylinder body 1 in air pressure size, on sealing cover 9 Equipped with detection device 7, hot water pressure overall process can be monitored, is become with the pressure in real-time detection water storing bin 15 and cylinder body 1 Pressure extraction coffee；Also, pressure relief device 14 is provided on this coffee machine, after the air pressure in cylinder body 1 is higher than certain value, automatic leakage Pressure guarantees that using safe, security performance is high, and pressure relief device 14 is used cooperatively with flow control valve 5, prevents user's adjusting flow When with pressure, the amplitude of accommodation is excessive and causes the accident of moment boosting, superpressure, has the function of preventing human operational error.

In the present embodiment, flow control valve 5 is set at the center of sealing cover 9, and pressure relief device 14 and detection device 7 are set In the edge of sealing cover 9, flow control valve 5 is 90 ° of flow control valves, and the input end of 90 ° of flow control valve sides, which is equipped with, to be opened The one 90 ° of upward adapter 12 of mouth, high pressure gas bullet bottle 6 and corkage connector 11 are vertically arranged and by the one 90 ° of adapter 12 It is connected with 90 ° of flow control valves；Detection device 7 include connection-peg 701, the 2nd 90 ° of adapters 702 and pressure gauges 703, second The opening at 90 ° of 702 tops of adapter is directed toward inside, and the rear end of pressure gauge 703 connect and is arranged in the 2nd 90 ° of adapter 702 The top of 90 ° of flow control valves, the side wall of shield 8 are equipped with the receiving hole being adapted with pressure gauge 703；The one of shield 8 Side is removably equipped with horizontally disposed handle 10；The structure characteristics of compact layout of entire water compression module 3, occupies little space, and It is vertically installed convenient for high pressure gas bullet bottle 6.

In the present embodiment, top cover 13 is installed, top cover 13 is equipped with the outer wall phase with high pressure gas bullet bottle 6 on shield 8 The location hole of adaptation, convenient for being dismounted, being adjusted to the component in shield 8 by dismantling top cover 13, high pressure gas bullet bottle 6 and fixed Position hole is adapted, and location hole face opens the upper opening of connector 11, under the guiding of location hole, is inserted into convenient for high pressure gas bullet bottle 6 Shield 8 is interior and opens 11 rapid abutting joint of connector.

Pedestal 2 is hollow structure, and the top of pedestal 2 is equipped with the plug division 201 connecting with cylinder body 1, plug division 201 and cylinder body 1 is connected through a screw thread, and the bottom end for covering 9 is socketed in the top of cylinder body 1；It gradually narrows and is equipped with and coffee in the top of plug division 201 The edge of the adaptable support portion 202 in the edge of strainer 4, Coffee screen net 4 is equipped with turnup structure, and Coffee screen net 4 is hung on pedestal 2 Top and be pressed between pedestal 2 and cylinder body 1.

Cylinder body 1, pedestal 2 and the mutual connection of sealing cover 9 are not limited solely to be threadedly coupled, and can also be arranged to insert It connects, snapping.

In the present embodiment, cylinder body 1, pedestal 2 and Coffee screen net 4 are combined into a modularization and brew structure, sealing cover with At a modularization pressure structure, each component on sealing cover is integrated to be set to shield 8 for each component combination on sealing cover It is interior, characteristics of compact layout, rationally；Modularization brews structure and brews knot for soaking in water coffee, modularization pressure structure and modularization High pressure extraction is carried out to the coffee in cylinder body 1 after structure assembling, modularization assembling, it is convenient to dismount, and easy to operate, modularization brews knot Structure, modularization pressure structure are small and exquisite, and width is 60mm between 75mm, can be with hand-held, cylinder body 1, pedestal 2 and sealing cover Steel material is process, and is all made of the production of 304 stainless steel of food-grade, cylinder body 1, pedestal 2 and close with the direct contact site of water Mutual junction is covered using food grade silicone, high pressure resistant, high temperature resistant is resistance to beat, and is unlikely to deform, good airproof performance.By After the completion of coffee extracted, needs to remove the coffee muffin in strainer, prepare for coffee brewing next time, it is usually logical It crosses that Open Side Down by cylinder body 1, cylinder body 1 is beaten on backing plate downwards, the coffee muffin being covered on strainer is utilized into inertia Principle knocks out, dimension, this coffee machine uses the cylinder body 1 of steel, is unlikely to deform in beaing, resistance to beat, durability is good.

In the present embodiment, cylinder body 1, pedestal 2, sealing cover 9, water storing bin 15 and shield 8 are cylindrical-shaped structure, cylinder body The round cylinder holes of perforation upper and lower ends is equipped in 1, Coffee screen net 4 is circular configuration compatible with round cylinder holes, easy to process.

The two sides of flow control valve 5 are respectively equipped with adjusting knob 501, valve inlet 502, and adjusting knob 501 protrudes from anti- The outer wall of shield 8 is arranged.Shield 8 is set on sealing cover and is connected through a screw thread, and the bottom end of sealing cover is equipped with to be connected with cylinder body 1 The external screw thread connect, the top of sealing cover are equipped with the external screw thread connecting with shield 8, between sealing cover and cylinder body 1, shield 8 Equipped with positioning spigot；The mounting hole of installation flow control valve on sealing cover is located at center, and installation detecting device 7, pressure release fill Set 14 mounting hole be arranged in flow control valve mounting hole the same side.The side wall of shield 8 is equipped with installation pressure gauge 703 pressure gauge location hole and the knob via hole adaptable with the outer wall of adjusting knob 501, position adjusting knob 501, prevent from adjusting Section knob 501 circumferentially rotates, and guarantees to be connected firmly between adjusting knob 501 and the valve body of flow control valve 5, shield 8 The upper/lower terminal of side wall is equipped with two bayonets being evenly arranged, and spanner easy to use back-outs shield 8.

Also bayonet can be set on cylinder body 1, pedestal 2 and sealing cover, be inserted into pin, unscrewed convenient for spanner stress or with hand.

Heating boiler in this hand coffee maker with water heating boiler, boiler heating method can be used for household drinker, The hot water supply of dental procedure bed and miniature steam engine and all equipment for needing miniature controllable heating and requiring the thermal efficiency high Upper use, the discord water contact of this heating boiler heating tube, using Environmental Safety, heating is fast, and temperature is easy to control.

Above are merely preferred embodiments of the utility model, it should be pointed out that for those skilled in the art, In Under the premise of not departing from the utility model structure, several modifications and improvements can also be made, it is practical new that these all will not influence this The effect and patent practicability that type is implemented.

Claims

1. a kind of hand coffee maker with water heating boiler, which is characterized in that including hollow cylinder body (1) and be set to the cylinder body (1) Coffee screen net (4) in, the bottom end of the cylinder body (1) are equipped with the pedestal (2) for compressing the Coffee screen net (4), the cylinder body (1) upper end is equipped with water storing bin (15), and the lower end of the water storing bin (15) is removably equipped with water-stop sheet (16), the water-stop sheet (16) check valve (17) are equipped with, water temperature sensing device (19) and hollow conductive structure is equipped in the water storing bin (15) (20), it is inserted with mold heating tube (18) in the conductive structure (20), the upper end of the water storing bin (15) is equipped with water compression molding Block (3).

2. a kind of hand coffee maker with water heating boiler according to claim 1, which is characterized in that the conductive structure It (20) is the heat-conducting cylinder being inserted into the water storing bin (15), the mold heating tube (18) is inserted into heat-conducting cylinder；The water Warm sensing device (19) includes the heat transfer cylinder being erected in the water storing bin (15) and the temperature sensor in heat transfer cylinder, institute Temperature sensor is stated to connect with the conductor wire of the mold heating tube (18).

3. a kind of hand coffee maker with water heating boiler according to claim 2, which is characterized in that the heat-conducting cylinder Barrel and the side wall of water storing bin (15) are tightly connected, and the temperature sensor is thermoswitch.

4. a kind of hand coffee maker with water heating boiler according to claim 1, which is characterized in that the water storing bin (15) gasket seal (23) are equipped between the water-stop sheet (16) in and the top of the cylinder body (1), water storing bin (15) inner wall Lower end be equipped with first positioning step (22) adaptable with the top surface of the water-stop sheet (16), gasket seal (23), second fixed Position step (24)；The upper end of water storing bin (15) inner wall is equipped with holding tank (25).

5. a kind of hand coffee maker with water heating boiler according to claim 1, which is characterized in that the cylinder body (1) The interior top positioned at the Coffee screen net (4), which is equipped with, divides the network of rivers (21).

6. existing according to claim 1 to a kind of hand coffee maker with water heating boiler, feature described in 5 any one In, the water compression module (3) include dismountable sealing cover (9) for being set to water storing bin (15) top, on the sealing cover (9) Equipped with flow control valve (5), pressure relief device (14) and detection device (7), the input end of the flow control valve (5) is detachable Be connected with high pressure gas bullet bottle (6), between the input end of the flow control valve (5) and the high pressure gas bullet bottle (6) be equipped with open Bottle connector (11)；The sealing cover (9) is equipped with shield (8).

7. a kind of hand coffee maker with water heating boiler according to claim 6, which is characterized in that the flow is adjusted Valve (5) is set at the center of the sealing cover (9), and the pressure relief device (14) and detection device (7) are set to sealing cover (9) Edge, the flow control valve (5) are 90 ° of flow control valves.

8. a kind of hand coffee maker with water heating boiler according to claim 7, which is characterized in that 90 ° of flows The input end of regulating valve side is equipped with the one 90 ° of adapter (12) of opening upwards, the high pressure gas bullet bottle (6) and corkage connector (11) it is vertically arranged and is connected by the one 90 ° of adapter (12) with 90 ° of flow control valves；Detection device (7) packet Include connection-peg (701), the 2nd 90 ° of adapter (702) and pressure gauge (703), opening at the top of the 2nd 90 ° of adapter (702) Mouth is directed toward inside, and the rear end of the pressure gauge (703) connect with the 2nd 90 ° of adapter (702) and is arranged in 90 ° of stream The top of adjustable valve, the side wall of the shield (8) are equipped with the receiving hole being adapted with the pressure gauge (703)；It is described The side of shield (8) is removably equipped with horizontally disposed handle (10).

9. a kind of hand coffee maker with water heating boiler according to claim 8, which is characterized in that the shield (8) it is equipped on top cover (13), the top cover (13) is equipped with the positioning adaptable with the outer wall of the high pressure gas bullet bottle (6) Hole.

10. a kind of hand coffee maker with water heating boiler according to claim 6, which is characterized in that the pedestal (2) Top be equipped with the plug division (201) that connect with the cylinder body (1), the bottom end of the sealing cover (9) is socketed in the cylinder body (1) Top；It gradually narrows and is equipped with the support portion adaptable with the edge of the Coffee screen net (4) in the top of the plug division (201) (202), the edge of the Coffee screen net (4) is equipped with turnup structure, and the Coffee screen net (4) is hung on the top of the pedestal (2) It holds and is pressed between pedestal (2) and cylinder body (1).