CN214341728U - Liquid supply system of steam heating cabinet - Google Patents

Abstract

The utility model belongs to the technical field of food heating equipment, concretely relates to liquid supply system of steam heating cabinet, steam generator is equipped with the feed liquor port, liquid supply system includes detachable water tank and coupling assembling, the water tank is equipped with out the liquid port, coupling assembling includes first joint and second joint, the feed liquor port is connected with first joint, it is connected with the second joint to go out the liquid port, first joint is equipped with the first valve structure of normally closed, the second joint is equipped with the second valve structure of normally closed, when the water tank is packed into the steam heating cabinet, first joint and second connect the butt joint, so that first valve structure and second valve structure are backed out the intercommunication and are gone out liquid port and feed liquor port, the utility model discloses realize the complete segregation between water tank and the steam generator, this kind of detachable connected mode installation dismantlement convenient and fast.

Description

Liquid supply system of steam heating cabinet

Technical Field

The utility model belongs to the technical field of food heating equipment, concretely relates to liquid supply system of steam heating cabinet.

Background

The steam heating cabinet is used for displaying and heating food, and is widely applied to places such as shops, restaurants and the like, the existing steam heating cabinet comprises a cabinet body and a base, a steam generating device and a water tank are arranged in the base, the water tank conveys water to the steam generating device through a pipeline, so that the steam generating device generates steam and conveys the steam to the cabinet body for heating food, but the water tank can generate more scale after being used for a long time, the existing water tank is generally fixedly arranged in the base, the disassembly difficulty is high, and the steam is not easy to clean, therefore, the prior art such as Chinese patent No. CN210748742U provides a steam cabinet with a movable water tank, the water tank is detachably connected with the base, the water tank can be detached and moved out of the base during cleaning, although the water tank and the base are detachably arranged, the corrugated pipe which is convenient to stretch and bend is adopted for connection with the steam generating device, the water tank is still connected with the steam generating device after being moved out of the base, and is not convenient to disassemble and wash in practical use, so that the development of a liquid supply system with the detachable water tank and the steam generating device is very necessary.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a detachable liquid supply system of water tank and steam generator.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a liquid supply system of steam heating cabinet, steam heating cabinet is equipped with steam generating device and one side open-ended loading groove, steam generating device is equipped with the feed liquor port, liquid supply system includes detachable water tank and coupling assembling, the water tank is equipped with out the liquid port, coupling assembling includes first joint and second joint, the feed liquor port is connected with first joint, it connects to go out the liquid port, first joint is equipped with the first valve structure of normally closed, the second connects and is equipped with the second valve structure of normally closed, when the water tank inserts in the loading groove, first joint and second connect the butt joint, so that first valve structure and second valve structure are opened the intercommunication by the top and are gone out liquid port and feed liquor port.

Compared with the prior art, the utility model provides a liquid supply system connects the dismantlement of realization water tank and steam generator to be connected through setting up first joint and second, pack the water tank into when the loading is gone into the inslot, alright butt joint first joint and second connect, thereby accomplish water tank and steam generator's being connected, when dismantling the water tank, outwards take out the water tank from the loading is gone into the groove, alright separation first joint and second connect, first joint and second after the separation connect the automatic recovery to be the normal close normality, cut off the discharge of water, make and realize the complete separation between water tank and the steam generator, so that the dismantlement of water tank washs, and simultaneously, connection structure between above-mentioned water tank and the steam generator installation dismantles convenient and fast.

Further, the steam heating cabinet still is equipped with the first return water port of connecting its heating chamber, the water tank is equipped with second return water port, first return water port is connected with first joint, second return water port is connected with the second and connects, and when the water tank inserted the dress inslot, the first joint of first return water port and the second joint butt joint of second return water port to make first valve structure and second valve structure be opened the first return water port of intercommunication and second return water port by the top, set up the comdenstion water in the recoverable heating chamber of first return water port and second return water port. Preferably, steam generator is equipped with the washing pipeline of connecting first return water port, sets up and washs the incrustation scale that the pipeline can be convenient for wash steam generator, with sewage recovery to the water tank in, tear the water tank out the back and clear up in unison again.

Further, the port of intaking of being connected with external water source is seted up to the lateral surface of water tank, be equipped with in the water tank with the water level control mechanism that the port of intaking is connected, water level control mechanism can be the floater mechanism, and when the water level was less than and predetermines the threshold value, open intake port automatic water supply, when the water level was higher than and predetermines the threshold value, closed intake port and stopped the moisturizing.

Further, a filter element assembly is installed in the liquid outlet port, preferably, the inner end of a second connector on the liquid outlet port penetrates through the liquid outlet port and extends into the water tank, and the filter element assembly is connected with the inner end of the second connector. Preferably, the upper side of the water tank is provided with a top wall, the top wall is provided with a water filling port through which the filter element assembly can pass, and the water filling port is provided with a cover body; or the top wall of the water tank is a detachable cover body. Set up filter element group spare and can filter the water that gets into steam generator, avoid producing the incrustation scale to and ensure that the steam that produces is clean.

Furthermore, the first joint is provided with a first channel, the first valve structure comprises a first port which is arranged at the end part of the first joint and connected with the first channel, and a first valve core which can floatingly close the first port, and the first valve core comprises a first trigger part which penetrates out of the first port. The second joint is provided with a second channel, the second valve structure comprises a second port which is arranged at the end part of the second joint and connected with the second channel, and a second valve core which can floatingly close the second port, and the second valve core comprises a second trigger part which penetrates out of the second port.

When the first joint is in butt joint with the second joint, the first trigger part and the second trigger part are abutted to open the first valve core and the second valve core, the first port and the second port are opened, when the first joint is separated from the second joint, the first valve core and the second valve core are outwards movably reset to close the first port and the second port, and the first valve structure and the second valve structure can realize synchronous opening of the first port and the second port during butt joint and synchronous closing of the first port and the second port during separation.

Furthermore, the first valve structure further comprises a first limiting member fixedly arranged in the first channel, and a first spring abutted between the first valve core and the first limiting member, the first spring provides an outward spring force to the first valve core, the second valve structure further comprises a second limiting member fixedly arranged in the second channel, and a second spring abutted between the second valve core and the second limiting member, the second spring provides an outward spring force to the second valve core, and the above structure can realize that the first valve core and the second valve core float and close corresponding ports, so that the first port and the second port are immediately closed when the first joint and the second joint are separated, and the water body is cut off.

Further, the outside of first port is equipped with the connecting seat, is equipped with the diversion trench of connecting first port in the connecting seat, and the second connects detachably to insert the diversion trench and with diversion trench seal fit to communicate first port and second port, the connected mode of above-mentioned plug is convenient for first joint and the connection and the separation that the second connects, of course, as the mode of a replacement, can set up the connecting seat in the outside of second port, insert the diversion trench with first joint during the connection, can realize above-mentioned effect equally.

Further, the first channel comprises a first straight section and a first tapered section, the first port is opened on the first tapered section, the first valve core comprises a first sealing part which is in sealing fit with the first conical section and a first guide part which is connected with the inner end of the first sealing part, the first trigger part is connected to the outer end of the first sealing part, the first guide part is in adaptive fit with the first straight section, the middle part is hollowed, the side part is provided with a plurality of first water leakage holes extending to the first sealing part, above-mentioned first toper section is connected closely between and the first sealing, and the water seal is effectual, sets up first guide part and can make first case move about more smoothly when opening or closing first port, plays the effect of direction, prevents that first case from rocking or the card is dead when the activity, sets up first hole that leaks and is for the water supply body passes first guide part.

Furthermore, the second channel comprises a second straight section and a second conical section, the second port is formed in the second conical section, the second valve core comprises a second sealing portion in sealing fit with the second conical section and a second guide portion connected to the inner end of the second sealing portion, the second trigger portion is connected to the outer end of the second sealing portion, the second guide portion is in adaptive fit with the second straight section, the middle of the second guide portion is hollowed, and the side portion of the second guide portion is provided with a plurality of second water leakage holes extending towards the second sealing portion. Above-mentioned second toper section is connected inseparably between the sealing of second portion, and the water seal is effectual, sets up the second guide part and can make the second case move about more smoothly when opening or closing the second port, plays the effect of direction, prevents that the second case from rocking or the card is dead when the activity, sets up the second and leaks the water hole and be for the water supply body passes second guide part.

Drawings

FIG. 1 is a perspective view of a steam heating cabinet;

FIG. 2 is a perspective view of the steam heating cabinet with the water tank removed;

FIG. 3 is a schematic view of the water tank and the second joint;

FIG. 4 is a schematic view of a liquid supply system;

FIG. 5 is a schematic view of a liquid supply system;

FIG. 6 is an enlarged view of area A of FIG. 5;

FIG. 7 is a schematic structural view of the first valve element and the second valve element not pressed against each other;

FIG. 8 is a schematic structural view of the first valve element and the second valve element pressing against each other;

FIG. 9 is a schematic view of the first connector separated from the second connector;

FIG. 10 is a schematic view of the structure of the first (second) spool;

FIG. 11 is a schematic view of a steam inlet;

fig. 12 is a schematic structural view of the steam supply hood.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings. In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which 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 and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 4 and 11, the embodiment provides a liquid supply system of a steam heating cabinet, the related steam heating cabinet includes a cabinet body 100 and a base 200 disposed at a lower side of the cabinet body 100, a heating cavity 101 is disposed in the cabinet body 100, the heating cavity 101 is used for accommodating food, a steam generating device 201 for providing steam to the heating cavity 101 and the liquid supply system 202 are disposed in the base 200, the liquid supply system 202 supplies water to the steam generating device 201, and includes a detachable water tank 3 and a connecting assembly (1,2), the water tank 3 is provided with a liquid outlet port 31, the steam generating device 201 is provided with a liquid inlet port 201a, the connecting assembly (1,2) includes a first joint 1 and a second joint 2, wherein the liquid inlet port 201a is connected with the first joint 1, and the liquid outlet port 31 is connected with the second joint 2.

Referring to fig. 5 to 7 and 10, the first joint 1 is provided with a normally closed first valve structure 13, a first passage 12 is provided in the first joint 1, the first valve structure 13 includes a first port 11 provided at an end of the first joint 1 and connected to the first passage 12, and a first valve core 130 capable of floatably closing the first port 11, a connecting seat 138 is provided at an outer side of the first port 11, a water guide groove 139 connected to the first port 11 is provided in the connecting seat 138, the first passage 12 includes a first flat section 120 and a first tapered section 121, the first port 11 is provided on the first tapered section 121, the first valve core 130 includes a first sealing portion 131 in sealing fit with the first tapered section 121, a first guiding portion 132 connected to an inner end of the first sealing portion 131, and a first triggering portion 133 connected to an outer end of the first sealing portion 131, the first sealing portion 131 includes a first sealing ring 134 abutting against an inner side wall of the first tapered section 121, the first triggering portion 133 penetrates through the first port 11, the first guiding portion 132 is adaptively matched with the first straight portion 120, the middle portion of the first triggering portion is hollowed, the lateral portion of the first triggering portion is provided with a plurality of first water leakage holes 135 extending towards the direction close to the first sealing portion 131, and when the first valve core 130 opens the first port 11, a water body can pass through the first water leakage holes 135 from the first port 11.

Referring to fig. 5 to 7 and 10, the second joint 2 is provided with a second valve structure 23 which is normally closed, a second channel 22 is arranged in the second joint 2, the second valve structure 23 comprises a second port 21 which is opened at the end of the second joint 2 and connected with the second channel 22, and a second valve core 230 which can floatingly close the second port 21, the second channel 22 comprises a second straight section 220 and a second conical section 221, the second port 21 is opened on the second conical section 221, the second valve core 230 comprises a second sealing part 231 which is in sealing fit with the second conical section 221, a second guiding part 232 which is connected with the inner end of the second sealing part 231, and a second triggering part 233 which is connected with the outer end of the second sealing part 231, the second sealing part 231 comprises a second sealing ring 234 which is in contact with the inner side wall 221 of the second conical section 221, the second triggering part 233 penetrates out of the second port 21, and the second guiding part 232 is in fit with the second straight section 220, the middle part is hollowed, the side part is provided with a plurality of second water leakage holes 235 extending towards the direction close to the second sealing part 231, and when the second valve core 230 opens the second port 21, the water body can pass through the second water leakage holes 235 from the second port 21.

The arrangement of the tapered channel can make the connection between the first sealing part 131 and the second sealing part 231 and the corresponding channel tighter, and the water sealing effect is better.

Referring to fig. 7, the first valve structure 13 further includes a first limiting member 136 fixedly disposed in the first channel 12, and a first spring 137 abutted between the first valve core 130 and the first limiting member 136, the first limiting member 136 is configured as a hollow structure, the first spring 137 provides an outward elastic force to the first valve core 130, the second valve structure 23 further includes a second limiting member 236 fixedly disposed in the second channel 22, and a second spring 237 abutted between the second valve core 230 and the second limiting member 236, the second limiting member 236 is configured as a hollow structure, the second spring 237 provides an outward elastic force to the second valve core 230, and the connection between the limiting members and the corresponding channels may be a threaded connection.

Referring to fig. 2, 7 and 8, an installation groove 203 with an opening at one side is formed in the base 200, and when the water tank 3 is inserted into the installation groove, the second joint 2 is detachably inserted into the water guide groove 139, wherein a third sealing ring 24 abutting against the inner side wall of the water guide groove 139 is sleeved on the outer side of the second joint 2, so as to realize the butt joint of the first joint 1 and the second joint 2, and enable the first trigger part 133 and the second trigger part 233 to abut against each other, so that the first valve core 130 and the second valve core 230 are pushed inwards to open the first port 11 and the second port 21, and communicate the first channel 12, the water guide groove 139 and the second channel 22; when the water tank 3 is drawn out from the loading groove 203, the second joint 2 is separated from the water guide groove 139, and the first valve core 130 and the second valve core 230 are movably restored to the outside to close the first port 11 and the second port 21.

Referring to fig. 1 to 9, the liquid supply system can be detachably connected to the steam generating device 201 through the first joint 1 and the second joint 2, when the first joint 1 is connected to the second joint 2, the first triggering portion 133 and the second triggering portion 233 contact with each other and push each other, so that the first valve core 130 and the second valve core 230 move inwards to compress the first spring 137 and the second spring 237, thereby opening the first valve joint 13 and the second valve structure 23 to open the first port 11 and the second port 21, and communicate the liquid inlet port 201a with the liquid outlet port 31, when the first joint 1 is separated from the second joint 2, the first triggering portion 133 and the second triggering portion 233 are simultaneously separated, so that the first valve core 130 and the second valve core 230 move outwards to return under the action of the first spring 137 and the second spring 237, thereby closing the first port 11 and the second port 21, blocking the transportation of the water body, and disconnecting the connection of the liquid inlet port 201a with the liquid outlet port 31, accomplish the separation of water tank 3 and steam generator 201, make water tank 3 break away from base 200, more be favorable to its washing, simultaneously, adopt the butt joint mode that first joint 1 and second connect 2, the installation is dismantled convenient and fast.

The connection mode of the first joint 1 and the second joint 2 can be conveniently assembled and disassembled, and certainly, as an alternative scheme, the connection seat 138 can be arranged at the outer side of the second port 21, and in the same way, when the first joint 1 and the second joint 2 are connected, the first joint 1 is inserted into the water guide groove 139, so that the effect can be realized.

Referring to fig. 8 and 10, the first guide portion 132 is provided to enable the first valve element 130 to move more smoothly when the first port 11 is opened or closed, so as to play a role of guiding and prevent the first valve element 130 from shaking or being stuck when moving, the first water leakage hole 135 is provided to enable the water supply body to flow to the steam generating device 201 through the first guide portion 132, similarly, the second guide portion 232 is provided to enable the second valve element 230 to move more smoothly when the second port 21 is opened or closed so as to play a role of guiding and prevent the second valve element 230 from shaking or being stuck when moving, and the second water leakage hole 235 is provided to enable the water supply body to flow to the first connector 1 through the second guide portion 232.

Referring to fig. 4, 11 and 12, a first water return port 201b is disposed at the bottom of the heating chamber 101, a second water return port 32 is disposed in the water tank 3, the first water return port 201b is connected to the first joint 1, the second water return port 32 is connected to the second joint 2, a connection manner between the first water return port 201b and the second water return port 32 is the same as a connection manner between the liquid inlet port 201a and the liquid outlet port 31, and the connection manner is the same as a connection manner between the liquid inlet port 201a and the liquid outlet port 31, and is that the first joint 1 and the second joint 2 are abutted when the water tank 3 is installed, the first valve structure 13 and the second valve structure 23 are opened to communicate the first water return port 201b and the second water return port 32, the first valve structure 13 and the second valve structure 23 are closed when the water tank 3 is detached, and the connection between the first water return port 201b and the second water return port 32 is disconnected, which will not be described again. The water return port can prevent the condensate water from remaining in the heating cavity 101, and is beneficial to recycling of the water body.

Referring to fig. 4, 5 and 12, as a specific embodiment, the liquid inlet port 201a is led out by a first pipe 201c, and the first water return port 201b is led out by a second pipe 201 d.

Referring to fig. 11 and 12, a steam inlet 102 is formed in the bottom wall of the heating chamber 101, a steam supply cover 103 is arranged on the bottom wall of the heating chamber 101 corresponding to the lower side of the steam inlet 102, a steam outlet of the steam generation device 201 is communicated with the side wall of the steam supply cover 103, a first water return port 201b is communicated with the bottom wall of the steam supply cover 103, and steam enters the heating chamber 101 through the steam supply cover 103, so that on one hand, the flow range of the steam in the entering process can be limited, and the loss of heat can be reduced, on the other hand, condensed water formed by the steam when the steam is cooled can be uniformly collected in the steam supply cover 103 and then flows to the water tank 3 through the first water return port 201b, so that the condensed water is prevented from dropping to other positions in the base 200, and rusting of other parts or short circuit of electric elements can be avoided.

Referring to fig. 12, the steam generator 201 is provided with a cleaning pipe 201e connected to the first water return port 201b, and when the cleaning pipe 201e is provided to clean the scale of the steam generator 201, the sewage is recycled into the water tank 3, and then the water tank 3 is removed and cleaned uniformly.

Referring to fig. 2, when the water tank 3 is inserted into the loading slot 203, the loading slot 203 is filled to flatten the side surface of the base 200, the opposite sides of the loading slot 203 are respectively provided with a sliding slot 204 along the direction of inserting the water tank 3, the opposite sides of the water tank 3 are respectively provided with a sliding block 33 inserted into the corresponding sliding slot 204, when the water tank 3 is installed, the water tank 3 is directly inserted into the loading slot 203 along the sliding slot 204, so that the butt joint of the first joint 1 and the second joint 2 can be realized, the step of aligning the first joint 1 and the second joint 2 is omitted, and the installation mode can also ensure that the water tank 3 is installed more stably.

Referring to fig. 5 and 6, the inner end of the second joint 2 connected to the liquid outlet 31 passes through the liquid outlet 31 and extends into the water tank 3, and the filter element assembly 34 connected to the inner end of the second joint 2 is installed in the water tank 3, so that the water flows to the steam generator 201 after being filtered, the generated steam is cleaner, and the scale in the steam generator can be reduced.

Referring to fig. 3 to 6, a top wall 30 is disposed on the upper side of the water tank 3, the top wall is provided with a water filling port 35 through which the filter element assembly 34 passes, the water filling port 35 is provided with a cover 36, and the cover 36 is disposed to facilitate the water tank 3 to be cleaned and replenished with water after being detached from the base 200, or the top wall 30 of the water tank is a detachable cover.

Referring to fig. 5, a water inlet port 37 connected to an external water source is formed in the outer side surface of the water tank 3, a water level control mechanism 38 connected to the water inlet port 37 is arranged in the water tank 3, the water level control mechanism 38 may be a floating ball mechanism, when the water level is lower than a preset threshold, the water level control mechanism 38 opens the water inlet port 37 to automatically replenish the water, and when the water level is higher than the preset threshold, the water level control mechanism 38 closes the water inlet port 37 to stop replenishing the water, which is convenient to operate.

Referring to fig. 5, a low water level sensor 39 is disposed in the water tank 3, the low water level sensor 39 is electrically connected to the controller of the steam heating cabinet, when the low water level sensor 39 senses that the water level is too low, the water level is fed back to the controller, and the controller stops the steam generating device 201 to work, so as to prevent dry burning.

Referring to fig. 12, a mounting plate 203 for fixing the first connector 1 is provided in the base 200 to ensure the rigidity of the first connector 1 when it is mated with the second connector 2.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (10)

1. Steam heating cabinet's liquid supply system, its characterized in that, liquid supply system includes detachable water tank and coupling assembling, the water tank is equipped with out the liquid port, coupling assembling includes first joint and second and connects, first joint is used for being connected with steam heating cabinet's steam generator's feed liquor port, the second connect with it connects to go out the liquid port, first joint is equipped with the first valve structure of normally closed, the second connects and is equipped with the second valve structure of normally closed, works as when the water tank packs into steam heating cabinet, first joint with the second connects the butt joint, so that first valve structure with second valve structure is opened the intercommunication in the top go out the liquid port with the feed liquor port.

2. The liquid supply system of claim 1, wherein the water tank is provided with a second water return port, and the connection assembly further comprises a first connector for connecting the first water return port of the steam heating cabinet, and a second connector connected to the second water return port, wherein when the water tank is installed in the steam heating cabinet, the first connector of the first water return port and the second connector of the second water return port are in butt joint, such that the first valve structure and the second valve structure are pushed open to communicate the first water return port and the second water return port.

3. The liquid supply system of claim 1, wherein the outer side of the water tank is provided with a water inlet connected to an external water source, and a water level control mechanism connected to the water inlet is arranged in the water tank.

4. The liquid supply system of claim 1, wherein the liquid outlet port has a filter cartridge assembly mounted at an inner end thereof.

5. The liquid supply system of claim 4, wherein an inner end of a second connector on said outlet port extends through said outlet port into said tank, said filter cartridge assembly being connected to an inner end of said second connector.

6. The liquid supply system of claim 4, wherein the tank has a top wall on the upper side, the top wall is provided with a filler through which the filter element assembly passes, and the filler is provided with a cover; or the top wall of the water tank is a detachable cover body.

7. The liquid supply system of any one of claims 1 to 6, wherein the first connector defines a first passage, the first valve structure includes a first port opening at an end of the first connector and connected to the first passage, and a first valve spool floatingly closing the first port, the first valve spool including a first trigger portion extending out of the first port;

the second joint is provided with a second channel, the second valve structure comprises a second port which is arranged at the end part of the second joint and connected with the second channel, and a second valve core which can floatingly close the second port, and the second valve core comprises a second trigger part which penetrates out of the second port;

when the first joint is in butt joint with the second joint, the first trigger part and the second trigger part are abutted to open the first valve core and the second valve core, the first port and the second port are opened, and when the first joint is separated from the second joint, the first valve core and the second valve core are outwards movably reset to close the first port and the second port.

8. The liquid supply system of claim 7, wherein the first valve structure further comprises a first stop fixedly disposed within the first passage, and a first spring abutting between the first valve spool and the first stop, the first spring providing an outward spring force to the first valve spool;

and/or the second valve structure further comprises a second limiting piece fixedly arranged in the second channel and a second spring abutted between the second valve core and the second limiting piece, and the second spring provides an outward spring force for the second valve core.

9. The liquid supply system of claim 7, wherein a connecting seat is arranged on the outer side of the first port, a water guide groove connected with the first port is arranged in the connecting seat, and the second joint is detachably inserted into and matched with the water guide groove in a sealing manner; or the outer side of the second port is provided with a connecting seat, a water diversion groove connected with the second port is arranged in the connecting seat, and the first connector is detachably inserted into the water diversion groove and is in sealing fit with the water diversion groove.

10. The liquid supply system of claim 7, wherein the first channel comprises a first straight section and a first tapered section, the first port is opened on the first tapered section, the first valve core comprises a first sealing portion in sealing fit with the first tapered section and a first guiding portion connected to an inner end of the first sealing portion, the first triggering portion is connected to an outer end of the first sealing portion, the first guiding portion is in adaptive fit with the first straight section, a middle portion of the first guiding portion is hollowed out, and a side portion of the first guiding portion is provided with a plurality of first water leakage holes extending towards the first sealing portion;

and/or the second channel comprises a second straight section and a second conical section, the second port is formed in the second conical section, the second valve core comprises a second sealing part in sealing fit with the second conical section and a second guide part connected to the inner end of the second sealing part, the second trigger part is connected to the outer end of the second sealing part, the second guide part is in adaptive fit with the second straight section, the middle of the second valve core is hollowed, and the side part of the second valve core is provided with a plurality of second water leakage holes extending towards the second sealing part.

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