CN215226829U

CN215226829U - Coffee machine

Info

Publication number: CN215226829U
Application number: CN202023330884.7U
Authority: CN
Inventors: 刘磊
Original assignee: Shenzhen Chenbei Technology Co Ltd
Current assignee: Shenzhen Chenbei Technology Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-12-21
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a coffee machine, which comprises a machine body and a brewing component, wherein the machine body is provided with a water pipe interface; the brewing assembly is detachably connected with the coffee machine body and comprises a support and a water outlet portion, the water outlet portion is arranged on the support, a water outlet channel is arranged inside the support and communicated with the water outlet portion and the water pipe connector, so that the water outlet portion and the water outlet channel can be detached from the coffee machine body along with the support, and the water outlet portion and the water outlet channel can be conveniently cleaned when the coffee machine is cleaned.

Description

Coffee machine

Technical Field

The utility model relates to a beverage dashes bubble equipment technical field, especially relates to a coffee machine.

Background

Coffee machines are automated devices for making coffee, which increasingly move into the general household as the standard of living increases. The coffee machine usually includes fuselage, water tank, gondola water faucet and coffee basket etc. is equipped with heating device in the fuselage, and the water tank supplies water for heating device, and the hot water or the steam that form after the heating pass through the pipe-line and carry to the gondola water faucet coffee in to the coffee basket and dash and steep, but the raceway and the gondola water faucet of current coffee machine usually and fuselage formula structure as an organic whole, can't dismantle, bring inconvenience for the washing of coffee machine.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a coffee machine for the gondola water faucet and the raceway of solving current coffee machine are usually with fuselage formula structure as an organic whole, can't dismantle, the problem of bringing inconvenience for the washing of coffee machine.

According to the embodiment of the utility model, this coffee machine includes:

the water pipe connector is arranged on the machine body; and

the brewing assembly is detachably connected with the machine body and comprises a support and a water outlet portion, the water outlet portion is arranged on the support, a water outlet channel is arranged inside the support, and the water outlet channel is communicated with the water outlet portion and the water pipe connector.

In some embodiments of the coffee maker, a male plug-in part is disposed at an outer side of the body, and a female plug-in part is disposed on the bracket, and the female plug-in part and the male plug-in part are in plug-in fit with each other, so that the bracket is detachably mounted on the body.

In some embodiments of the coffee maker, the water pipe interface is disposed on the male insertion portion, one end of the water outlet channel, which is away from the water outlet portion, is disposed on the female insertion portion, after the female insertion portion is inserted into the male insertion portion, the water outlet channel is communicated with the water pipe interface, and after the female insertion portion is separated from the male insertion portion, the water outlet channel is disconnected from the water pipe interface.

In some embodiments of the coffee machine, the male plug-in portion is a plug-in post, the female plug-in portion is a sleeve, a hook is connected to the sleeve, a jack is formed in the machine body and used for the hook to be inserted into the machine body, a buckling position is formed in the machine body, and after the sleeve is completely sleeved on the plug-in post, the hook extends into the machine body and is buckled with the buckling position.

In some embodiments of the coffee maker, the body is further provided with a fixture block embedded into the body and partially exposed out of the surface of the body, the fixture block is connected with the inner wall of the body through an elastic element, the fastening position is arranged on the fixture block, and the fastening hook and the fastening position which are fastened with each other can be separated from each other by pressing the part of the fixture block exposed out of the surface of the body.

In some embodiments of the coffee maker, the support includes a support body and a cover plate, the support body partially extends outwards to form the sleeve, a brewing cavity is formed inside the support body, a water delivery pipe is arranged inside the sleeve, the water delivery pipe forms the water outlet channel, a coffee filter basket is placed in the brewing cavity, the cover plate is rotatably arranged on the support body and used for opening and closing the brewing cavity, the water outlet portion is installed on the inner side of the cover plate, one end of the water delivery pipe, which is far away from the water outlet portion, extends into the sleeve, the sleeve is sleeved on the insertion post, and the part of the water delivery pipe, which is located in the sleeve, is inserted into the water pipe opening.

In some embodiments of the coffee maker, the coffee maker further comprises a water tank, a water outlet is arranged on the water tank, a water inlet is arranged on the machine body, the water tank is detachably mounted on the machine body, and the water outlet is communicated with the water inlet.

In some embodiments of the coffee maker, the coffee maker further comprises a sealing assembly, the sealing assembly is arranged around the water pipe connector, and the water pipe is inserted into the water pipe connector through the sealing assembly.

In some embodiments of the coffee machine, the sealing assembly includes a silica gel pad, a silica gel pressing plate and a fixing member, the silica gel pad and the silica gel pressing plate are sequentially stacked around the water pipe interface, the fixing member fixes the silica gel pressing plate and the silica gel pad on the plug column, the silica gel pad and the silica gel pressing plate are respectively provided with a pressing plate opening and a silica gel opening corresponding to the water pipe interface.

In some embodiments of the coffee maker, the diameter of the water pipe interface is larger than the outer diameter of the water pipe, and the outer diameter of the water pipe is larger than the diameter of the silica gel opening and smaller than the diameter of the pressing plate opening.

Implement the embodiment of the utility model provides a, will have following beneficial effect:

the water outlet part is arranged on the support through the water pipe interface arranged on the coffee machine body, the water outlet channel is arranged in the support and is communicated with the water outlet part and the water pipe interface, so that the water outlet part and the water outlet channel can be detached from the coffee machine body along with the support, and the water outlet part and the water outlet channel can be cleaned conveniently when the coffee machine is cleaned.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Wherein:

fig. 1 is a schematic view of an overall structure of a coffee maker according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of a coffee maker according to an embodiment of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2 at A;

FIG. 4 is a diagram of the clasp, latch, and spring according to one embodiment of the present invention;

FIG. 5 is a partial schematic view of the water tank and brewing assembly shown disassembled from the body of the brewing machine in accordance with one embodiment of the present invention;

FIG. 6 is an enlarged view of the structure at B in FIG. 5;

FIG. 7 is a partial cross-sectional view of the brewing assembly shown mounted to the body in accordance with one embodiment of the present invention;

fig. 8 is a schematic view of the brewing assembly of fig. 7 separated from the body.

Description of the main element symbols:

100-a fuselage; 101-a water inlet pipe; 102-a water outlet pipe; 103-water pipe interface; 104-a water inlet; 105-key holes; 110-insert posts; 111-a guide slot;

210-a scaffold; 211-frame body; 2111-sleeve; 212-a cover plate; 220-a water outlet part; 230-a water conveying pipe; 240-coffee filter basket;

300-a water tank; 301-avoidance slot;

400-clasp; 500-fixture block; 501-buckling position; 600-an elastic member;

700-a seal assembly; 710-silica gel pad; 720-silica gel pressing plate; 721-platen opening; 730-fixing member.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The water delivery pipe and the shower head of the existing coffee machine are usually integrated with the machine body, and cannot be disassembled, so that inconvenience is brought to the washing of the coffee machine.

To this, the embodiment of the utility model provides an in the fuselage on set up water pipe connection, will go out water portion and set up on the support to set up out the water channel in the inside of support, go out water channel intercommunication water portion and water pipe connection, make out water portion and water channel can follow the support and dismantle from the fuselage and get off, be convenient for wash water portion and water channel when wasing the coffee machine.

In one embodiment, as shown in fig. 1-2 and 5, the coffee maker includes a body 100 and a brewing assembly.

As shown in fig. 7 to 8, the main body 100 is provided with a water pipe connection 103 for outputting hot water or high-temperature steam generated inside the main body 100.

Specifically, the body 100 is L-shaped, a heating device (such as a heating tube) and a driving device (such as a water pump) are arranged inside the body 100, a control panel for controlling the whole coffee machine is arranged outside the body 100, and cold water enters the inside of the body 100, is heated by the heating device to form hot water, is delivered to the water pipe connector 103 through the water outlet pipe 102 by the driving device, and is delivered to the water outlet portion 220 of the brewing assembly through the water outlet channel for brewing coffee.

Of course, in some other embodiments, only the heating device may be disposed inside the body 100, and no driving device is disposed, so that the cold water is heated by the heating device and vaporized into steam or high-temperature steam, the steam automatically flows upwards, and sequentially enters the brewing assembly through the water outlet pipe 102, the water pipe connector 103 and the water outlet channel, the liquid gradually meets the condensation inside the water outlet portion 220 and is liquefied into liquid, and the liquid drips from the water outlet portion 220 under the action of gravity and is discharged for brewing coffee.

The brewing assembly is detachably connected with the machine body 100 and comprises a support 210 and a water outlet part 220, the water outlet part 220 is arranged on the support 210, a water outlet channel is arranged in the support 210, and the water outlet channel is communicated with the water outlet part 220 and the water pipe connector 103. Wherein the water outlet portion 220 may be a shower head, the water outlet channel may be formed by the inside of the water pipe 230 disposed in the bracket 210, one end of the water pipe 230 is connected with the water outlet portion 220, and the other end is connected with the water pipe connector 103 in a manner of being able to be plugged.

The working principle of the coffee machine is as follows: after the heating device in the body 100 heats the cold water entering the body 100, the hot water or the high-temperature steam is sequentially conveyed to the water outlet portion 220 of the brewing assembly through the water outlet pipe 102, the water pipe connector 103 and the water conveying pipe 102, the coffee powder placed in the support 210 and below the water outlet portion 220 is brewed by the hot water flowing out of the water outlet portion 220, and the brewed coffee flows out of the coffee outlet on the support 210 for a user to drink.

The embodiment of the present invention provides an embodiment, through set up water pipe connection 103 on fuselage 100, will go out water portion 220 and set up on support 210 to set up outlet channel in support 210's inside, outlet channel intercommunication goes out water portion and water pipe connection 103, makes out water portion 220 and raceway 230 and can follow support 210 and dismantle from fuselage 100 and get off, is convenient for wash outlet portion 220 and raceway 230 when wasing the coffee machine.

In one embodiment, as shown in fig. 1-3, 5, and 7-8, the outer side of the body 100 is provided with a male plug, and the bracket 210 is provided with a female plug, which is in plug-in fit with the male plug, so that the bracket 210 is detachably mounted on the body 100.

The embodiment of the utility model provides an in, through setting up public spigot joint portion in the outside of fuselage 100, set up female spigot joint portion on support body 211, through the cooperation of pegging graft each other with public spigot joint portion of female spigot joint portion for support body 211 is simple and convenient with the installation and the dismantlement of fuselage 100.

In a more specific embodiment, as shown in fig. 1-3 and 5-8, the water pipe connector 103 is disposed on the male connector, an end of the water outlet channel away from the water outlet 220 is disposed on the female connector, the water outlet channel is connected to the water pipe connector 103 after the female connector is plugged into the male connector, and the water outlet channel is disconnected from the water pipe connector 103 after the female connector is disconnected from the male connector.

The embodiment of the utility model provides an in, through setting up water pipe interface 103 on public spigot joint portion, the one end setting that goes out water passageway and keep away from out water portion 220 is on female spigot joint portion, when female spigot joint portion and public spigot joint portion peg graft the cooperation each other, realizes going out the break-make of water passageway and water pipe interface 103, makes things convenient for out being connected and the disconnection of water passageway and water pipe interface 103, improves the simplicity and convenience that the user used.

In a further specific embodiment, as shown in fig. 1 to 8, the male plug-in portion is a plug-in post 110 vertically disposed on the top of the machine body 100, the female plug-in portion is a sleeve 2111, the sleeve 2111 is connected with a hook 400, the machine body 100 is provided with a jack for the hook 400 to be inserted into the machine body 100, the machine body 100 is provided with a buckle position 501, and after the sleeve 2111 is completely sleeved on the plug-in post 110, the hook 400 extends into the machine body 100 and is buckled with the buckle position 501.

Specifically, the outer side of the post 110 is provided with a guide groove 111 along the sleeving direction of the sleeve 2111, one end of the guide groove 111 close to the body 100 extends into the body 100 through the insertion hole, the sleeve 2111 is sleeved on the post 110, the hook 400 slides in the guide groove 111, and after the sleeve 2111 is completely sleeved on the post 110, the hook 400 extends into the body 100 and is fastened with the fastening position 501.

Furthermore, the body 100 is further provided with a fixture block 500 embedded into the body 100 and partially exposed out of the surface of the body 100, the fixture block 500 is connected with the inner wall of the body 100 through an elastic member 600, the fastening position 501 is provided on the fixture block 500, and the portion of the fixture block 500 exposed out of the surface of the body 100 is pressed to enable the mutually fastened clasp 400 and the fastening position 501 to be separated from fastening.

Specifically, the clasp 400 is a vertically disposed plastic strip, the lower end of the plastic strip is lifted to form a hook shape, the machine body 100 is provided with a key hole 105, the fixture block 500 is embedded in the key hole 105 and is partially protruded out of the key hole 105, the buckling position 501 is formed by partially hollowing out the fixture block 500, the elastic piece 600 is an S-shaped elastic piece integrally formed with the fixture block 500, of course, the elastic piece 600 can also be a spring connected with the fixture block 500, one end of the elastic piece 600 far away from the fixture block 500 is fixed on the inner wall of the machine body 100, the elastic piece 600 can be pressed to enable the buckling position 501 to move by pressing the fixture block 500, and therefore the clasp 400 and the buckling position 501 which are mutually buckled are separated.

In the embodiment of the utility model, through setting up clip 400 at sleeve 2111 lower extreme, buckle position 501 is set up inside fuselage 100, make to realize the locking through the lock joint of buckle position 501 with clip 400 after dashing bubble subassembly and fuselage 100 installation, improve the reliability that dashes to dash and steep subassembly and fuselage 100 and be connected, buckle position 501 is located and is embedded into fuselage 100 and partially exposes on the fixture block 500 on fuselage 100 surface, press down fixture block 500 and can make clip 400 and buckle position 501 separate, then can lift support body 211 and realize the separation of dashing bubble subassembly and fuselage 100, make to dash the simple to operate reliable, the dismantlement is simple swift of bubble subassembly and fuselage 100.

In a further specific embodiment, as shown in fig. 2, 5, and 7-8, the water pipe connector 103 is disposed on the top of the plug 110, the bracket 210 includes a frame 211 and a cover 212, a portion of the frame 211 extends outward to form a sleeve 2111, a brewing chamber is formed inside the frame 211, a water pipe 230 is disposed inside the sleeve 2111, a water outlet channel is formed inside the water pipe 230, a coffee filter basket 240 is disposed in the brewing chamber, the coffee filter basket 240 is used for holding coffee powder, the cover 212 is rotatably disposed on the frame 211 through a rotating shaft and is used for opening and closing the brewing chamber, the coffee filter basket 240 is conveniently taken out and the coffee powder is conveniently replaced, the water outlet 220 is mounted inside the cover 212, when the cover 212 is opened, the water outlet 220 is opened along with the cover 212, when the cover 212 is closed, the water outlet 220 is located above the coffee filter basket 240, hot water flowing out from the water outlet 220 carries out the coffee powder in the coffee filter basket 240, the coffee formed after brewing is discharged from a coffee outlet on the holder 210, which is in communication with the brewing chamber, and the coffee cup is placed below the coffee outlet for holding coffee.

One end of the water pipe 230 far away from the water outlet portion 220 extends into the sleeve 2111 from top to bottom, the sleeve 2111 is sleeved on the post 110, and the part of the water pipe 230 located in the sleeve 2111 is inserted into the water pipe connector 103.

Specifically, the frame body 211 and the sleeve 2111 are integrally formed by plastic through injection molding, wherein the water pipe 230 is a rigid PP plastic pipe, one end of the water pipe is communicated with the water outlet portion 220, and the other end of the water pipe extends into the sleeve 2111, in order to improve the stability of the water pipe 230 in the sleeve 2111, a flange is formed at one end of the outer side of the sleeve 2111, which is close to the water outlet portion 220, and a step is arranged in the sleeve 2111, and the flange abuts against the step and is fixedly connected through screws. Through the flange plate and the step fit, the water pipe 230 is fixed in the sleeve 2111, so that the water pipe 230 cannot freely shake when being plugged into or pulled out of the water pipe connector 103. When the frame body 211 is arranged on the insert post 110 from top to bottom through the sleeve 2111, the part of the water pipe 230 located in the sleeve 2111 is inserted into the water pipe connector 103 from top to bottom, and the conduction between the water pipe 230 and the water pipe connector 103 is realized while the brewing assembly is installed; when the bracket body 211 is lifted up, the water pipe 230 inserted into the water pipe connector 103 is gradually pulled out along with the lifting of the sleeve 2111, and the water pipe 230 is disconnected from the water pipe connector 103 while the brewing assembly is disassembled.

In some embodiments, as shown in fig. 1-2 and 5, the coffee maker further includes a water tank 300, a water outlet (not shown) is provided on the water tank 300, a water inlet 104 is provided on the top of the body 100, the water tank 300 is detachably mounted on the top of the body 100, and the water outlet is communicated with the water inlet 104.

Particularly, the top of the water tank 300 is provided with a water filling port, a tank cover is arranged on the water filling port, the tank cover is opened to enable water to be filled into the water tank 300 through the water filling port, and a water outlet is formed in the bottom of the water tank 300. Water enters the water inlet pipe 101 inside the body 100 from the water inlet 104 and flows through the heating device inside the body 100 to be heated. Water tank 300 one side is equipped with and is used for dodging the groove 301 of dodging of inserting post 110, dodge the direction of height setting of groove 301 along water tank 300, can also play the effect that holds sleeve 2111 simultaneously, be convenient for the installation and the dismantlement of water tank 300, can set up sleeve 2111 into the shape that from top to bottom tapers, will dodge groove 301 and set up the shape that from top to bottom tapers equally, after installation water tank 300, overlap frame body 211 on inserting post 110 from top to bottom through dodging groove 301, can play the effect that restriction water tank 300 removed through sleeve 2111.

In the embodiment of the present invention, the water tank 300 is detachably disposed on the body 100, so that the water tank 300 can be easily detached and cleaned.

In a specific embodiment, as shown in fig. 1-2 and 5-8, the water pipe connector further includes a sealing assembly 700, the sealing assembly 700 is disposed around the water pipe connector 103, and the water pipe 230 is inserted into the water pipe connector 103 through the sealing assembly 700.

By arranging the sealing assembly 700, the connection tightness between the water pipe 230 and the water pipe connector 103 is improved, and the situation of water leakage at the splicing position of the water pipe 230 and the water pipe connector 103 is avoided.

In some embodiments, as shown in fig. 1-2 and 5-8, the sealing assembly 700 includes a silicone pad 710, a silicone pressure plate 720 and a fixing member 730, the silicone pad 710 and the silicone pressure plate 720 are sequentially stacked around the water pipe connector 103, the fixing member 730 fixes the silicone pressure plate 720 and the silicone pad 710 on the plug 110, and the silicone pad 710 and the silicone pressure plate 720 are respectively provided with a pressure plate opening 721 corresponding to the water pipe connector 103 and a silicone opening.

Specifically, the fixing member 730 may be a screw, the silicone pressing plate 720 is made of hard plastic, the silicone pad 710 is made of silicone, the screw sequentially penetrates through the silicone pressing plate 720 and the silicone pad 710 to be screwed with the plug-in post 110, so as to fix the silicone pressing plate 720 and the silicone pad 710 on the plug-in post 110, and the silicone pressing plate 720 is provided to increase a contact area between the screw and the silicone pad 710, so that the silicone pad 710 is stably fixed on the plug-in post 110.

Wherein the diameter of water pipe interface 103 is greater than the external diameter of raceway 230, be convenient for raceway 230 insert water pipe interface 103 smoothly in, the external diameter of raceway 230 is greater than the diameter of silica gel opening, make raceway 230 insert water pipe interface 103 after, form interference fit between silica gel pad 710 and the raceway 230, and then play sealed effect, likewise, the external diameter of raceway 230 is less than the diameter of clamp plate opening 721, be convenient for raceway 230 insert in the silica gel opening better.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples are merely illustrative of several embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the claims. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. Coffee machine, characterized in that it comprises:

the water pipe connector is arranged on the machine body; and

2. The coffee machine of claim 1, wherein a male plug is provided on the outer side of the machine body, and a female plug is provided on the holder, and the female plug and the male plug are plugged into each other, so that the holder is detachably mounted on the machine body.

3. The coffee machine of claim 2, wherein the water pipe interface is disposed on the male plug-in portion, one end of the water outlet channel away from the water outlet portion is disposed on the female plug-in portion, the water outlet channel is communicated with the water pipe interface after the female plug-in portion is plugged with the male plug-in portion, and the water outlet channel is disconnected from the water pipe interface after the female plug-in portion is separated from the male plug-in portion.

4. The coffee machine of claim 3, wherein the male plug-in portion is a plug-in post, the female plug-in portion is a sleeve, a hook is connected to the sleeve, a jack is provided on the machine body for the hook to be inserted into the machine body, a buckle position is provided inside the machine body, and after the sleeve is completely sleeved on the plug-in post, the hook extends into the machine body and is fastened to the buckle position.

5. The coffee machine of claim 4, wherein the body further comprises a clip embedded in the body and partially exposed out of the surface of the body, the clip is connected to the inner wall of the body through an elastic member, the fastening seat is disposed on the clip, and the portion of the clip exposed out of the surface of the body is pressed to disengage the fastening hook and the fastening seat.

6. The coffee machine according to claim 4, characterized in that the support comprises a support body and a cover plate, the support body partially extends outwards to form the sleeve, a brewing cavity is formed inside the support body, a water delivery pipe is arranged inside the sleeve, the water delivery pipe forms the water outlet channel, a coffee filtering basket is placed in the brewing cavity, the cover plate is rotatably arranged on the support body and used for opening and closing the brewing cavity, the water outlet part is arranged on the inner side of the cover plate, one end of the water delivery pipe, far away from the water outlet part, extends into the sleeve, the sleeve is sleeved on the insertion column, and the part of the water delivery pipe, located in the sleeve, is inserted into the water delivery pipe opening.

7. The coffee machine of claim 6, further comprising a water tank, wherein the water tank is provided with a water outlet, the body is provided with a water inlet, the water tank is detachably mounted on the body, and the water outlet is communicated with the water inlet.

8. A coffee machine according to any of claims 6-7, further comprising a sealing assembly arranged around the periphery of the water pipe connection, through which the water pipe is inserted into the water pipe connection.

9. A coffee machine according to claim 8, characterized in that the sealing component comprises a silica gel pad, a silica gel pressing plate and a fixing part, the silica gel pad and the silica gel pressing plate are sequentially stacked around the water pipe interface, the fixing part fixes the silica gel pressing plate and the silica gel pad on the plug post, and the silica gel pad and the silica gel pressing plate are respectively provided with a pressing plate opening and a silica gel opening corresponding to the water pipe interface.

10. The coffee machine of claim 9, wherein the diameter of the water pipe interface is larger than the outer diameter of the water pipe, and the outer diameter of the water pipe is larger than the diameter of the silica gel opening and smaller than the diameter of the pressure plate opening.