CN211158797U

CN211158797U - Water dispenser

Info

Publication number: CN211158797U
Application number: CN201921826172.9U
Authority: CN
Inventors: 王绮漫; 王梓宇; 周文斌
Original assignee: Ningbo Waho Technology Co ltd
Current assignee: Ningbo Waho Technology Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-08-04
Anticipated expiration: 2029-10-29

Abstract

The utility model provides a water dispenser, include the organism with install in the flourishing water tank of organism, install filter element group spare in the flourishing water tank, the bottom of flourishing water tank is equipped with the inlet opening, filter element group spare with the connection can be dismantled to the inlet opening. The drinking water machine of the utility model is divided into the machine body and the water containing tank, and has simple structure, beautiful appearance and convenient installation; the water containing tank is used for containing unfiltered water; the filter element assembly is arranged in the water containing tank, and water filtered by the filter element assembly can meet the quality requirement of people on drinking water; the water storage tank is provided with a water inlet, and the water inlet is simple in structure, convenient for batch production and capable of connecting the filter element assembly with the water storage tank; the inner filter element assembly is detachably connected with the water inlet hole, so that the filter element assembly can be conveniently detached, and meanwhile, the filter element assembly is convenient to install and maintain, and the use and maintenance cost of the filter element is reduced.

Description

Water dispenser

Technical Field

The utility model relates to a drinking water purifying equipment technical field particularly, relates to a water dispenser.

Background

With the improvement of living standard of people, the water dispenser becomes a common household appliance; the traditional water dispenser directly supplies water by using barreled water, and the problem that the water bucket which is repeatedly used is difficult to clean in the cleaning process exists, so that the quality of the supplied water cannot meet the requirements of people.

Although the existing desk type water dispenser solves the problem of filtering water, the filter element of the water dispenser cannot be replaced or is difficult to replace due to the fact that the filter element is installed in the water dispenser, the filter element is too long in service time, and the filtering effect is poor, so that the water supply quality of the water dispenser cannot meet the requirement.

SUMMERY OF THE UTILITY MODEL

The utility model solves the problem that the filter element of the water dispenser can not be replaced or is difficult to replace.

In order to solve at least one aspect of the above problems, the utility model discloses at first provide a water dispenser that has filter core, include the organism with install in the flourishing water tank of organism, install filter element group spare in the flourishing water tank, the bottom of flourishing water tank is equipped with the inlet opening, filter element group spare with the connection can be dismantled to the inlet opening.

Preferably, the filter element assembly and the detachable connection mode between the water inlet holes are slot connection, buckle connection or threaded connection.

Preferably, the lower surface of the bottom of the water containing tank is provided with a water outlet pipe connected with the machine body, and the water outlet pipe is communicated with the water inlet hole.

Preferably, a water pump, a heating pipe and a water outlet nozzle which are connected in sequence are installed in the machine body, and the water pump is communicated with the water inlet hole.

Preferably, the water outlet nozzle comprises a water outlet hole and a plurality of heat dissipation holes arranged around the water outlet hole.

Preferably, the filter element group spare includes that filter core and cover establish filter flask outside the filter core, the filter flask with be formed with the cavity between the filter core, the filter flask is equipped with water inlet and delivery port, the water inlet the cavity the filter core with the delivery port is arranged from the front to the back in proper order in the rivers direction.

Preferably, a third convex ring is arranged in the filter bottle, the water inlet hole is formed in the third convex ring, and the third convex ring is connected with the bottom of the filter element.

Preferably, the top of the filter bottle is provided with a detachable filter bottle cap.

Preferably, the water inlet is arranged at the bottom edge of the filter flask, the water outlet is arranged at the bottom center of the filter flask, and the water outlet is connected with the water inlet hole.

Preferably, the upper surface of the bottom of the water containing tank is provided with a first convex ring, the water inlet hole is positioned in the first convex ring, the bottom of the filter flask is provided with a second convex ring matched with the first convex ring, and the water outlet is positioned in the second convex ring.

Compared with the prior art, the water dispenser with the filter element of the utility model has the advantages that the water dispenser is divided into the dispenser body and the water containing tank, the structure is simple, the appearance is attractive, and the installation is convenient; the water containing tank is used for containing unfiltered water; the filter element assembly is arranged in the water containing tank, and water filtered by the filter element assembly can meet the quality requirement of people on drinking water; the water storage tank is provided with a water inlet, and the water inlet is simple in structure, convenient for batch production and capable of connecting the filter element assembly with the water storage tank; the filter element assembly is detachably connected with the water inlet hole, so that the filter element assembly can be conveniently detached, and meanwhile, the filter element assembly is convenient to install and maintain, and the use and maintenance cost of the filter element is reduced.

Drawings

Fig. 1 is a first structural diagram of a water dispenser according to an embodiment of the present invention;

FIG. 2 is a structural diagram of the inside of a water dispenser according to an embodiment of the present invention;

FIG. 3 is a second structural diagram of a water dispenser according to an embodiment of the present invention;

fig. 4 is a sectional view of a water dispenser according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a filter cartridge assembly according to an embodiment of the present invention;

fig. 6 is a structural diagram of a faucet according to an embodiment of the present invention;

fig. 7 is a sectional view of a water tank according to an embodiment of the present invention;

FIG. 8 is an enlarged view of portion A of FIG. 7;

fig. 9 is a partial structure diagram of a water dispenser according to an embodiment of the present invention.

Description of reference numerals:

1 machine body, 11-shell, 12-water pump, 13-reinforcing rib, 14-heating pipe, 15-water outlet channel, 16-water inlet channel, 17-water outlet nozzle, 171-water outlet hole, 172-heat dissipation hole, 173-metal heat insulation plate, 174-baffle, 18-top cover, 2-water containing tank, 21-water inlet hole, 22-first bulge, 23-handle, water outlet pipe 24, 3-filter element component, 31-filter element, 32-filter bottle, 321-water inlet, 322-water outlet, 323-second bulge loop, 324-third bulge loop, 325-filter bottle cap, 4-water containing plate and X-water flow direction.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

The embodiment of the utility model provides a water dispenser with filter core combines fig. 1, fig. 3 and fig. 7 to show, including organism 1 with install in organism 1's flourishing water tank 2, install filter element group spare 3 in the flourishing water tank 2, the bottom of flourishing water tank 2 is equipped with inlet opening 21, filter element group spare 3 can be dismantled with inlet opening 21 and be connected.

The water dispenser adopts a split design, so that the water dispenser is more convenient to disassemble and assemble, and a user can use the water dispenser more conveniently; the water containing tank 2 is detachably connected with the machine body 1, and particularly, the bottom of the water containing tank 2 is connected with the machine body 1 in a buckling manner, so that the connection strength between the water containing tank 2 and the machine body 1 is ensured, meanwhile, the detachable connection structure is simple, and the production cost of the water dispenser is reduced; and the water containing tank 2 and the machine body 1 are simpler to install, thereby being convenient for users or manufacturers to use the water dispenser.

Wherein, the water containing tank 2 is provided with an accommodating cavity for containing water to be filtered; hold case 2 and filter element group spare 3 and adopt the components of a whole that can function independently structure to the mode of connection can be dismantled in the adoption, not only make the installation between filter element group spare 3 and the flourishing water tank 2 simple, and the change of filter element group spare 3 is also more convenient, thereby makes the maintenance of filter element group spare 3 more convenient, improves the safety in utilization of water dispenser.

The bottom of the water containing tank 2 is provided with a water inlet 21, the water inlet 21 is mutually connected with the filter element assembly 3, and the finished water filtered by the filter element assembly 3 is conveyed into the machine body 1; the inlet opening 21 can be dismantled with filter element group spare 3 and be connected, can conveniently dismantle filter element group spare 3 like this, and filter element group spare 3 installation is maintained conveniently simultaneously, has reduced the filter core and has used and maintain the cost.

In the embodiment, the water dispenser is divided into the machine body 1 and the water containing tank 2, the water dispenser is simple in structure and attractive in appearance, the production efficiency is greatly improved, and the water containing tank 2 is used for containing unfiltered water; a filter element is arranged in the water containing tank 2, and the water filtered by the filter element assembly 3 can meet the quality requirement of people on drinking water; the water storage tank 2 is provided with a water inlet 21, and the water inlet 2 is simple in structure and convenient for batch production; the inner filter element component 3 and the water inlet hole 21 adopt a detachable connection mode, so that the filter element component 3 can be conveniently detached, and meanwhile, the filter element component 3 is convenient to install and maintain, and the use and maintenance cost of the filter element is reduced.

Preferably, the detachable connection mode between the filter element assembly 3 and the water inlet hole 21 is slot connection, buckle connection or threaded connection, so as to meet the installation requirements of different water dispensers on different filter element assemblies 3.

Wherein, when adopting threaded connection between filter element group spare 3 and the inlet opening 21, not only can dismantle the simple structure of connection, make things convenient for the dismantlement and the installation of filter element group spare 3, and guaranteed the joint strength between filter element group spare 3 and the inlet opening 21.

In this embodiment, the filter element assembly 3 and the water inlet 21 can be connected in different ways to meet the installation requirements of different water dispensers on different filter element assemblies 3.

As shown in fig. 1, 4 and 5, preferably, the filter element assembly 3 includes a filter element 31 and a filter flask 32 sleeved outside the filter element 31, a cavity is formed between the filter flask 32 and the filter element 31, the filter flask 32 is provided with a water inlet 321 and a water outlet 322, and the water inlet 321, the cavity, the filter element 31 and the water outlet 322 are sequentially arranged from front to back in the water flow direction; the filter flask 32 is arranged to protect the filter element 31 and prevent the filter element 31 from being damaged by water flow scouring; be formed with the cavity between filter flask 32 and the filter core 31, and filter flask 32 is equipped with water inlet 321, and inside water entering filter element group spare 3 in the convenient flourishing water tank 2 of water inlet 321, the cavity is used for providing the space for the water that gets into filter element group spare 3 inside simultaneously, makes things convenient for filtering of filter core 31.

Wherein, the filter flask 32 is provided with a water outlet 322, the water outlet 322 is connected with the water inlet 21, and the water filtered by the filter element is transported into the machine body 1 through the water inlet 322 and the water inlet 21 for the next operation.

The user pours water into flourishing water tank 2, and the water in flourishing water tank 2 at first gets into the inside cavity of filter element group spare 3 through water inlet 321, and the water in the cavity slowly increases afterwards, thereby water pressure forces the filter core to filter, and then the water after filtering flows to the organism 1 in through delivery port 322 inside filter core 31.

The filter element 31 generally uses activated carbon as a material, and in addition, granular activated carbon, PE non-woven fabric, metal filter elements, ultrafiltration and the like can be used as the filter element 31, so that the requirements of different water dispensers on the filter element 31 are met.

In this embodiment, the filter element assembly 3 is provided with a filter flask 32, which plays a role of protecting the filter element 31; meanwhile, a water outlet 322, a water inlet 321 and a cavity are arranged in the filter element assembly 3, so that the filtering efficiency of the filter element 31 is improved.

Preferably, as shown in fig. 4 and 5, the water inlet 321 is disposed at the bottom edge of the filter flask 32, the water outlet 322 is disposed at the bottom center of the filter flask 32, and the water outlet 322 is connected with the water inlet hole 21; the water outlet 322 is arranged at the bottom of the filter flask 32, so that when the water level is reduced to be near the bottom, water can continuously enter the filter element 31 through the water inlet hole 21 for filtering; thus greatly improving the utilization rate of water and avoiding the waste of water resources.

The number of the water inlets 321 is multiple, and the multiple water inlets 321 are uniformly distributed on the bottom edge of the filter flask 32, so that the flow rate of water filtered by the filter element assembly 3 is ensured; the water outlet 322 enables the water inlet hole 21 and the filter element 31 to be communicated with each other, so that water can flow from the filter element 31 to the water inlet hole 21; the water outlet 322 is disposed at the center of the bottom of the filter flask 32, so that water around the filter flask 32 can enter the filter flask 32, and the filtering rate of the filter element 31 is increased.

In this embodiment, water inlet 321 sets up in filter flask 32 bottom, guarantees when the water in water containing tank 2 is less, and water can also continue to filter in getting into filter element group spare 3 through water inlet 321, has improved the utilization ratio of water, has avoided the waste of water resource, and delivery port 322 sets up the bottom center department at filter flask 32 simultaneously, has improved the filtration rate of filter core 31 like this.

Preferably, as shown in fig. 4, a third convex ring 324 is provided in the filter flask 32, the water inlet 21 is located in the third convex ring 324, and the third convex ring 324 is connected to the bottom of the filter element 31; the third collar 324 is disposed at the bottom of the filter flask 32 and fits snugly against the bottom of the filter cartridge 32.

In this embodiment, the third convex ring 324 plays a role of fixing the filter element 31, so as to increase the connection strength between the filter element 31 and the filter bottle 32; meanwhile, the sealing function is realized, and the filtered water is prevented from being mixed with the unfiltered water in the cavity.

Preferably, as shown in fig. 4 and 7, a first convex ring 22 is arranged on the upper surface of the bottom of the water containing tank 2, the water inlet 21 is positioned in the first convex ring 22, a second convex ring 323 matched with the first convex ring 22 is arranged at the bottom of the filter flask 32, and the water outlet 322 is positioned in the second convex ring 323; the first bulge 22 is tightly matched with the filter flask 32 and plays a role in fixing the filter element assembly 3; meanwhile, the filter bottle 32 is connected with the first bulge 22 by a buckle, so that the structure is simple, and the connection strength between the filter element assembly 3 and the water containing tank 2 is enhanced; the water inlet 21 transports the water filtered in the filter element 31 to the machine body 1 for the next operation; the second protrusion 323 is provided with a sealing ring for sealing.

In this embodiment, the first convex ring 22 and the second convex ring 323 are tightly matched to play the role of fixing the filter element assembly 3, so that the connection strength between the filter element assembly 3 and the water containing tank 2 is improved, and the sealing performance between the water containing tanks 2 and the filter element assembly 3 can be ensured.

Preferably, as shown in connection with FIG. 4, the top of the filter flask 32 is provided with a removable filter flask cap 325; the filter cap 325 plays a role in protection and prevents the filter element 31 from being damaged; meanwhile, the filter bottle cap 325 and the filter bottle 32 are detachably connected, the filter element assembly 3 can only replace the filter element 31, the installation and maintenance efficiency of the filter element assembly 3 is improved, and the use and maintenance cost of the filter element assembly 3 is reduced.

In this embodiment, the removable filter cartridge cap 325 not only improves the efficiency of filter cartridge assembly 3 installation and maintenance, but also reduces the cost of use and maintenance of the filter cartridge assembly 3.

Preferably, as shown in fig. 7, a water outlet pipe 24 connected to the machine body 1 is disposed on the lower surface of the bottom of the water containing tank 2, and the water outlet pipe 24 is communicated with the water inlet hole 21; the water outlet pipe 24 is arranged at the bottom and is used for conveying water filtered by the filter element 31 to the water pump 12 or the heating pipe 14 in the machine body.

Wherein, the machine body 1 is provided with a water outlet channel 15 and a water inlet channel 16, and the water outlet channel 15 and the water inlet channel 16 are respectively connected with the heating pipe 14 and the water pump 12; on the one hand, serves to connect the heating pipe 14 to the water pump 12 and at the same time serves to transport filtered water from the water reservoir 2 to the water pump 102.

The water outlet channel 15 and the water inlet channel 16 adopt PPR pipes, so that the water outlet channel can be used as a cold water pipe or a hot water pipe, and the water outlet channel and the water inlet channel are nontoxic, light in weight, pressure-resistant and corrosion-resistant; besides, hot-dip cast iron pipes, copper pipes, stainless steel pipes, plastic-clad metal pipes, such as plastic-clad steel pipes and aluminum-plastic composite pipes can be adopted, and different water pipes meet the use and installation requirements of different water dispensers.

In this embodiment, the water outlet pipe 24 is arranged to connect the water tank 2 and the machine body 1, and transport filtered water into the machine body.

Preferably, as shown in fig. 2 and 9, a water pump 12, a heating pipe 14 and a water outlet nozzle 13 are installed in the machine body 1, and the water pump 12 is communicated with the water inlet 21; the water pump 12 is used for accelerating the flow speed of filtered water so as to improve the filtering speed; the heating pipe 14 is used for heating the filtered water to meet different requirements of users for the use of drinking water.

The machine body 1 further comprises a shell 11, and the heating pipe 14 and the water pump 12 are both arranged in the shell 11; the shell 11 is used for protecting the structure of internal equipment, and has the functions of shock resistance, water leakage resistance and the like; a reinforcing rib 13 is arranged in the shell 11; the reinforcing ribs 13 are uniformly distributed inside the shell 11, and play a role in reinforcing the strength of the shell 11.

The water pump 12, the heating pipe 14 and the shell 11 are connected by screws, so that the connection mode is simple in structure, and the connection strength between the water pump 12, the heating pipe 14 and the machine body 1 is enhanced; meanwhile, the reinforcing device is arranged on the heating pipe, so that the heating pipe 14 is fixed, and the heating pipe 14 is prevented from sliding.

Wherein, heating pipe 14 is equipped with a fixed plate outward, and the fixed plate is used for fixed heating pipe 14, plays thermal-insulated effect simultaneously, prevents that the heat that heating pipe produced influences the operation of equipment in the heating process.

A power supply device is arranged in the machine body 1 and plays a role of operating the whole device, the power supply device is mutually connected with the water pump, and the power supply device provides power for the operation of the water pump 12; the power supply equipment can adopt a storage battery which can store electric energy on one hand so that the equipment can still normally run under the condition of power failure, and on the other hand, the storage battery has long service life and low price, thereby greatly saving the cost expenditure; besides, the power supply can also use metal-air batteries, solar batteries and the like to meet different design requirements of different water dispensers.

In this embodiment, a water pump 12 and a heating pipe 14 are provided, which not only improves the filtration rate of the water dispenser, but also meets the requirements of different users on the water temperature, and greatly improves the experience of the users.

Preferably, as shown in fig. 6, the nozzle 17 includes an outlet hole 171 and a plurality of heat dissipation holes 172 disposed around the outlet hole 171; the water outlet nozzle 17 is used for helping the water dispenser to discharge water; the water outlet hole 171 is used for discharging water, and the water outlet hole 171 can be in different shapes such as an oval shape, a round shape and a rhombic shape, so that the attractiveness of the water outlet nozzle 13 is improved, and different requirements of different water dispensers on water discharge and water discharge rate are met.

The water outlet nozzle 17 is further provided with a baffle 174, and the baffle 174 plays a role in fixing, so that the strength of the water outlet nozzle 17 is enhanced, and the water outlet nozzle 17 is prevented from being damaged due to overlarge water yield and strong impact force; on the other hand, the water outlet has a blocking effect, and water is prevented from flowing out of the front of the heat dissipation holes 172, so that the heat dissipation function of the water outlet can be greatly increased, and the damage of hot water to the water outlet nozzle 17 is reduced.

Wherein, a metal heat insulation layer 173 is arranged in the water outlet nozzle 17, and the metal heat insulation layer 173 plays a heat insulation role on one hand, so as to prevent the outside of the water outlet nozzle 17 from being damaged; on the other hand, the device can prevent the hot water from generating harmful substances due to heating and transportation.

In this embodiment, the water outlet nozzle 17 is provided to play a role of water outlet and transport the filtered water to the user for use; on the other hand, the water outlet nozzle 17 is provided with the baffle 174 and the heat dissipation holes 172, so that the strength of the water outlet nozzle 17 is greatly improved, the service life of the water outlet nozzle 17 is greatly prolonged, and the quality of the water dispenser is improved.

As shown in fig. 1, the water dispenser further comprises a water containing plate 4, the water containing plate 4 is provided with through holes which are uniformly distributed, and a cavity for containing water is further arranged in the water containing plate 4; the through hole is oval, greatly increased flourishing water board 4's aesthetic property, flourishing water board 4 still adopts the components of a whole that can function independently design simultaneously, dismantles the installation like this simply, and conveniently washs flourishing water board 4.

Wherein, adopt the buckle fixed between flourishing water board 4 and the organism 1, fixed strength is big, and simple structure, flourishing water board 4 installation, dismantlement convenience can improve user's experience and feel.

In the embodiment, the water containing plate 4 is arranged for containing water which is inadvertently dropped from the water dispenser, so that the situation that the desktop is wet and percolated due to dropping water is avoided, and meanwhile, the water containing plate 4 is simple in structure, convenient to install and capable of realizing mass production.

Preferably, as shown in fig. 1, a top cover 18 is arranged on the top of the machine body 1, and the top cover 18 is matched with the water containing tank 2 to prevent external pollution sources from entering the tank body and secondary pollution to unfiltered water; the water containing tank 2 is provided with the handle 23, the handle 23 is movably connected with the water containing tank 2, the water containing tank is internally provided with the mounting hole, and the handle 23 and the water containing tank 2 are mutually connected through the mounting hole, so that the installation of the handle 23 is facilitated, and meanwhile, the use of the water dispenser by a user is facilitated.

In this embodiment, the top cover 13 prevents external pollution sources from entering the box body, and ensures the safety of the water dispenser.

As shown in fig. 1 and 2, a reinforcing rib 13 is arranged in the housing 11; the reinforcing ribs 13 are uniformly distributed in the shell, and play a role in reinforcing the strength of the shell 11.

In the embodiment, the reinforcing ribs 13 are arranged to enhance the strength of the machine body 1, improve the overall strength and shock absorption of the water dispenser and prolong the service life of the water dispenser.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.

Claims

1. The water dispenser is characterized by comprising a dispenser body (1) and a water containing tank (2) installed on the dispenser body (1), wherein a filter element assembly (3) is installed in the water containing tank (2), a water inlet hole (21) is formed in the bottom of the water containing tank (2), and the filter element assembly (3) is detachably connected with the water inlet hole (21).

2. The water dispenser as claimed in claim 1, characterized in that the filter element assembly (3) is detachably connected with the water inlet (21) by means of a slot connection, a snap connection or a threaded connection.

3. The water dispenser as claimed in claim 1, wherein the lower surface of the bottom of the water tank (2) is provided with a water outlet pipe (24) connected with the machine body (1), and the water outlet pipe (24) is communicated with the water inlet hole (21).

4. The water dispenser as claimed in claim 1, wherein the body (1) is internally provided with a water pump (12), a heating pipe (14) and a water outlet nozzle (17) which are connected in sequence, and the water pump (12) is communicated with the water inlet (21).

5. The water dispenser of claim 4 wherein the nozzle (17) comprises an outlet opening (171) and a plurality of heat dissipation apertures (172) disposed around the outlet opening (171).

6. The water dispenser according to any one of claims 1-5, characterized in that the filter element assembly (3) comprises a filter element (31) and a filter bottle (32) sleeved outside the filter element (31), a cavity is formed between the filter bottle (32) and the filter element (31), the filter bottle (32) is provided with a water inlet (321) and a water outlet (322), and the water inlet (321), the cavity, the filter element (31) and the water outlet (322) are sequentially arranged from front to back in the water flow direction.

7. The water dispenser as claimed in claim 6, characterized in that a third convex ring (324) is arranged in the filter bottle (32), the water inlet (21) is positioned in the third convex ring (324), and the third convex ring (324) is connected with the bottom of the filter element (31).

8. The water dispenser of claim 6 wherein the filter bottle (32) has a removable filter cap (325) on top.

9. The water dispenser as claimed in claim 6, characterized in that the water inlet (321) is arranged at the bottom edge of the filter flask (32), the water outlet (322) is arranged at the bottom center of the filter flask (32), and the water outlet (322) is connected with the water inlet hole (21).

10. The water dispenser as claimed in claim 6, characterized in that the upper surface of the bottom of the water tank (2) is provided with a first convex ring (22), the water inlet hole (21) is positioned in the first convex ring (22), the bottom of the filter flask (32) is provided with a second convex ring (323) matched with the first convex ring (22), and the water outlet (322) is positioned in the second convex ring (323).