阅读说明：本技术 一种保温壶 (Heat preservation kettle ) 是由 朱泽春 李永江 于 2020-03-23 设计创作，主要内容包括：本发明公开了一种保温壶,包括壶体和壶盖,所述壶盖内开设有用于连通壶体内部和大气的出水通道,所述出水通道下端盖合有封水件,所述封水件上开设有配合孔,所述配合孔贯穿有活塞,所述配合孔与活塞间隙形成与出水通道连通的第一泄压通道,所述壶盖设置有连通出水通道与大气的进气通道,其特征是：所述封水件和活塞中至少一个设有与出水通道连通的第二泄压通道,当壶盖密封时,活塞来堵住第一泄压通道和第二泄压通道；当壶盖泄压时,活塞打开第一泄压通道和第二泄压通道。第一泄压通道和第二泄压通道同时泄压,泄压效率更高,能够迅速实现泄压。(The invention discloses a heat preservation pot, which comprises a pot body and a pot cover, wherein a water outlet channel used for communicating the inside of the pot body with the atmosphere is arranged in the pot cover, a water sealing part is covered at the lower end of the water outlet channel, a matching hole is arranged on the water sealing part, a piston penetrates through the matching hole, a first pressure relief channel communicated with the water outlet channel is formed between the matching hole and the piston, and the pot cover is provided with an air inlet channel communicated with the water outlet channel and the atmosphere, and the heat preservation pot is characterized in that: at least one of the water sealing piece and the piston is provided with a second pressure relief channel communicated with the water outlet channel, and when the kettle cover is sealed, the piston blocks the first pressure relief channel and the second pressure relief channel; when the kettle cover is decompressed, the piston opens the first decompression channel and the second decompression channel. First pressure release passageway and second pressure release passageway release pressure simultaneously, and the pressure release is efficient, can realize the pressure release rapidly.)

1. The utility model provides a thermo jug, includes the kettle body and pot lid, it is used for the internal portion of intercommunication kettle and atmospheric delivery channel to have seted up in the pot lid, delivery channel lower extreme lid has closed water sealing member, water sealing member is last to have seted up the mating holes, the mating holes runs through there is the piston, the mating holes forms the first pressure release passageway that communicates with delivery channel with the piston clearance, the pot lid is provided with intercommunication delivery channel and atmospheric inlet channel, characterized by: at least one of the water sealing piece and the piston is provided with a second pressure relief channel communicated with the water outlet channel, and when the kettle cover is sealed, the piston blocks the first pressure relief channel and the second pressure relief channel; when the kettle cover is decompressed, the piston opens the first decompression channel and the second decompression channel.

2. The thermos of claim 1 wherein: the second pressure relief channel is directly communicated with the first pressure relief channel, and when the kettle cover relieves pressure, the first pressure relief channel and the second pressure relief channel relieve pressure together.

3. The thermos of claim 2 wherein: the second pressure relief channel comprises a pressure relief hole formed in the water sealing piece.

4. A thermo jug according to claim 3, wherein: the edge of the matching hole extends upwards to form a bulge, and the pressure relief hole is formed in the bulge.

5. The thermos of claim 4 wherein: the kettle cover is internally provided with a driving spring, the upper end of the driving spring is abutted against the inner wall of the water outlet channel, and the lower end of the driving spring is abutted against the water sealing piece and sleeved on the bulge.

6. The thermos of claim 2 wherein: the piston comprises a plug rod penetrating through the matching hole and a sealing plug fixed on the plug rod, the second pressure relief channel comprises a pressure relief groove formed in the outer side wall of the plug rod, and the length of the pressure relief groove is larger than that of the matching hole.

7. The insulated kettle of claim 6, wherein: the sealing plug is located the gag lever post bottom, the pressure relief groove extends to the sealing plug along the gag lever post.

8. The thermos of claim 1 wherein: when the kettle cover is sealed, the piston moves upwards and blocks the lower parts of the first pressure relief channel and the second pressure relief channel; or when the kettle cover is sealed, the piston moves downwards and blocks the upper parts of the first pressure relief channel and the second pressure relief channel.

9. The thermos of claim 1 wherein: the second pressure relief passage is not in direct communication with the first pressure relief passage.

10. The insulated kettle of claim 9, wherein: the piston includes the gag lever post, fixes the sealing plug that is used for sealed first pressure release passageway and second pressure release passageway on the gag lever post, second pressure release passageway is for seting up the pressure release hole at water sealing spare, the pressure release hole is used for communicateing out water passageway and the internal wall of kettle, the length of pressure release hole to the mating holes is less than the width of sealing plug.

Technical Field

The invention relates to the field of kettles, in particular to a thermal insulation kettle.

Background

At present, chinese patent with publication number CN209252457U discloses a kettle cover capable of releasing pressure in advance, which comprises a cover body, a slide way in the bottom of the cover body is provided with a piston rod, the upper end of the piston rod extends upwards into the cavity and is sleeved with a return spring, the lower end of the piston rod extends downwards out of the slide way and is fixedly sleeved with a bottom sealing ring, the piston rod is also fixedly sleeved with a lower pressing piece, a gap between the lower pressing piece and the bottom sealing ring is provided with a water sealing piece, the water sealing piece is slidably sleeved on the piston rod and can slide between the lower pressing piece and the bottom sealing ring, and a water outlet channel is arranged inside the cover body; a button rod is arranged above the piston rod, and the piston rod is driven to move downwards by pressing the button rod downwards, so that the water sealing piece is driven to move downwards to leave the bottom of the cover body, and the opening of a water outlet channel is realized; and when the button rod is loosened, the piston rod moves upwards to reset under the action of the reset spring, so that the water outlet channel is closed.

Although the kettle cover can realize pressure relief in advance and then discharge water, the pressure relief is carried out only through the pressure relief gap formed by the piston rod and the inner hole of the water sealing piece. When the pressure relief gap is small, the pressure relief efficiency is too low to relieve pressure in time; when the pressure release clearance was too big, the piston rod can rock about sealing a water piece hole, and the relative piston rod of sealing a water piece rocks about promptly, when the piston rod pulling was sealed a water movement and is sealed to exhalant canal, was sealed a water piece probably because rock and lead to skew and can't seal exhalant canal completely, and then lead to the pot lid to leak.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a thermos flask which can improve the pressure relief efficiency under the premise that the fit clearance between a fit hole and a piston is not changed.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a thermo jug, includes the kettle body and pot lid, be equipped with in the pot lid and be used for the inside and atmospheric delivery channel of intercommunication kettle body, delivery channel lower extreme lid has closed water sealing spare, water sealing spare is last to have seted up the mating holes, the mating holes runs through there is piston, characterized by: a first pressure relief channel communicated with the water outlet channel is formed between the matching hole and the piston, at least one of the water sealing piece and the piston is provided with a second pressure relief channel communicated with the water outlet channel, and when the kettle cover is sealed, the piston blocks the first pressure relief channel and the second pressure relief channel; when the kettle cover is decompressed, the piston opens the first decompression channel and the second decompression channel.

Preferably, the second pressure relief channel is directly communicated with the first pressure relief channel, and when the kettle cover is relieved of pressure, the first pressure relief channel and the second pressure relief channel are relieved of pressure together.

Preferably, the second pressure relief channel comprises a pressure relief hole formed in the water sealing member.

Preferably, the edge of the matching hole extends upwards to form a protrusion, and the pressure relief hole is formed in the protrusion.

Preferably, a driving spring is arranged in the kettle cover, the upper end of the driving spring abuts against the inner wall of the water outlet channel, and the lower end of the driving spring abuts against the water sealing piece and is sleeved on the protrusion.

Preferably, the piston comprises a plug rod penetrating through the matching hole and a sealing plug fixed on the plug rod, the second pressure relief channel comprises a pressure relief groove formed in the outer side wall of the plug rod, and the length of the pressure relief groove is larger than that of the matching hole.

Preferably, the sealing plug is located at the bottom end of the stem, and the pressure relief groove extends along the stem to the sealing plug.

Preferably, when the kettle cover is sealed, the piston moves upwards and blocks the lower parts of the first pressure relief channel and the second pressure relief channel; or when the kettle cover is sealed, the piston moves downwards and blocks the upper parts of the first pressure relief channel and the second pressure relief channel.

Preferably, the second pressure relief passage is not in direct communication with the first pressure relief passage.

Preferably, the piston includes the cock stem, fixes the sealing plug that is used for sealed first pressure release passageway and second pressure release passageway on the cock stem, second pressure release passageway is for seting up the pressure release hole at water sealing spare, the pressure release hole is used for communicateing out water passageway and kettle body inner wall, the length of pressure release hole to mating holes is less than the width of sealing plug.

In summary, compared with the prior art, the beneficial effects of the invention are as follows:

1. the first pressure relief channel and the second pressure relief channel simultaneously relieve pressure, so that the pressure relief efficiency is higher, and the pressure relief can be realized rapidly; compared with the scheme that the pressure relief is improved by increasing the fit clearance between the fit hole and the piston, the scheme can reduce the left-right shaking of the water sealing piece relative to the piston, and further ensure that the water sealing piece can stably seal the water outlet channel along with the movement of the piston;

2. the first pressure relief channel is directly communicated with the second pressure relief channel, and the first pressure relief channel and the second pressure relief channel relieve pressure together. The first pressure relief channel and the second pressure relief channel form a large pressure relief channel communicated with the inside for pressure relief, and the pressure relief channel can contain and pass larger solids and is not easily blocked by solids such as tea leaves in the kettle body, so that stable pressure relief is guaranteed;

3. the pressure relief holes are arranged on the bulges, so that the influence of the arrangement of the pressure relief holes on the structural strength of the water sealing piece can be reduced, and the shape of the pressure relief holes is not easy to change; the pressure relief hole is converged at the edge of the matching hole, namely the first pressure relief channel and the second pressure relief channel are converged at the matching hole, so that the first pressure relief channel and the second pressure relief channel can be conveniently sealed by the piston;

4. when the kettle cover is decompressed, the piston moves downwards, the lower end of the pressure relief groove is positioned below the matching hole, the upper end of the pressure relief groove is positioned above the matching hole, and gas below the water sealing piece can directly enter the pressure relief groove, moves to the upper end of the pressure relief groove and then enters the water outlet channel without flowing through the first pressure relief channel, so that the exhaust efficiency is high;

5. the pressure relief grooves are more than two and are uniformly distributed along the circumferential direction, so that the resultant force of all the offset forces is zero, and the shaking of the plug rod during pressure relief is reduced;

6. the kettle body is provided with an air inlet channel which is directly communicated with the water outlet channel. When the kettle cover discharges water, the upper end opening of the water outlet channel discharges water, the air inlet channel admits air to the kettle cover so as to balance the air pressure of the water outlet channel and the inner wall of the kettle body relative to the atmosphere, and the water outlet channel can stably and continuously discharge water.

Drawings

FIG. 1 is a first cross-sectional view of the embodiment;

FIG. 2 is an exploded view of the lid;

FIG. 3 is a partial schematic view of a kettle lid;

FIG. 4 is a schematic view of a first structure of the piston and the water sealing member;

FIG. 5 is a second cross-sectional view of the embodiment;

FIG. 6 is a second structural view of the piston and the water sealing member;

fig. 7 is a schematic structural view of the baffle plate and the piston.

Reference numerals: 1. a kettle body; 2. a pot lid; 3. a water outlet channel; 4. a water sealing member; 5. a mating hole; 6. a first pressure relief passage; 7. a second pressure relief passage; 71. a pressure relief vent; 72. a pressure relief groove; 8. a drive assembly; 81. a piston; 811. a stopper rod; 812. a sealing plug; 82. a drive spring; 9. a protrusion; 10. clamping ribs; 11. an air intake passage; 12. a baffle plate; 121. mounting holes; 122. avoiding holes; 123. a card slot; 13. a return spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1, the thermos comprises a kettle body 1 and a kettle cover 2 covering the kettle body 1.

Referring to fig. 1 and 2, a water outlet channel 3 for communicating the interior of the kettle body 1 with the atmosphere is arranged in the kettle cover 2. Specifically, the upper end of the water outlet channel 3 is communicated with the atmosphere, and the lower end of the water outlet channel 3 is communicated with the inside of the kettle body 1. The lower end of the water outlet channel 3 is covered with a water sealing part 4, and the water sealing part 4 is used for sealing the lower end of the water outlet channel 3 so as to limit the water in the kettle body 1 to flow to the kettle cover 2.

Referring to fig. 1 and 3, a fitting hole 5 is formed in the water sealing member 4, a piston 81 penetrates through the fitting hole 5, and the piston 81 can move up and down relative to the fitting hole 5. A first pressure relief channel 6 communicated with the water outlet channel 3 is formed between the matching hole 5 and the piston 81, and at least one of the water sealing piece 4 and the piston 81 is provided with a second pressure relief channel 7 communicated with the water outlet channel 3; when the kettle cover 2 is sealed, the piston 81 blocks the first pressure relief channel 6 and the second pressure relief channel 7; when the kettle lid 2 is vented, the piston 81 opens the first vent passage 6 and the second vent passage 7.

When the thermos is poured, high-temperature and high-pressure gas in the kettle body 1 can be discharged through the first pressure relief channel 6 and the second pressure relief channel 7, so that the air pressure of the kettle body 1 and the atmosphere is balanced, the subsequent water sealing part 4 is conveniently opened, and the condition that the water sealing part 4 is pressed is avoided. In addition, the first pressure relief channel 6 and the second pressure relief channel 7 relieve pressure simultaneously, so that the pressure relief efficiency is higher, and the pressure relief can be realized rapidly. When the piston 81 and the water sealing part 4 are the same driving assembly 8, the time interval from the pressure relief to the opening of the water sealing part 4 is short, and the pressure relief efficiency is high.

This pot lid 2 can be under the condition that does not change first pressure release passageway 6 size, promotes the pressure release efficiency through second pressure release passageway 7. This pot lid 2 can be under the unchangeable prerequisite of mating holes 5 and piston 81 fit clearance promptly, and it can promote pressure release efficiency. Compare increase mating holes 5 and piston 81 fit clearance and promote the pressure release, this scheme can reduce and rock about 4 relative pistons 81 of water sealing spare, and then guarantees that water sealing spare 4 can stably seal outlet channel 3 along with the motion of piston 81.

In this embodiment, the first pressure relief channel 6 is directly communicated with the second pressure relief channel 7, and the first pressure relief channel 6 and the second pressure relief channel 7 relieve pressure together. First pressure release channel 6 and second pressure release channel 7 form the big pressure release channel of an inside intercommunication and carry out the pressure release, and this kind of pressure release channel can hold through bigger solid, is difficult to be blockked up by the solid of the tealeaves and so on in the kettle body 1 to the pressure release is stabilized in the guarantee.

Specifically, the second pressure release passage 7 includes a pressure release hole 71 provided in the water seal 4. The relief hole 71 extends to the fitting hole 5 to communicate the first relief passage 6 and the second relief passage 7. The pressure relief hole 71 is formed in the water seal 4, so that the water seal 4 integrates two functions of water sealing and pressure relief.

The border of mating holes 5 upwards extends and forms arch 9, and protruding 9 can strengthen the structural strength on mating holes 5 limit and make the shape of mating holes 5 not change, and then avoid mating holes 5 to change and arouse that first pressure release channel 6 changes. The projection 9 is annular and surrounds the fitting hole 5. The pressure relief holes 71 are formed in the protrusion 9, and the number of the pressure relief holes 71 is more than two and is distributed along the circumferential direction of the protrusion 9. Through setting up pressure release hole 71 on arch 9, can reduce to set up the influence of pressure release hole 71 to water-sealing member 4 structural strength to can guarantee that the shape of pressure release hole 71 is difficult for changing. In addition, pressure release hole 71 converges at the mating hole 5 border, that is, first pressure release channel 6 and second pressure release channel 7 converge at mating hole 5, can make things convenient for piston 81 to seal first pressure release channel 6 and second pressure release channel 7.

In other embodiments, the pressure relief hole 71 may be opened at the outer edge of the water sealing member 4 and extend to the fitting hole 5.

In this embodiment, a driving spring 82 is disposed in the kettle lid 2, an upper end of the driving spring 82 abuts against an inner wall of the water outlet channel 3, and a lower end of the driving spring 82 abuts against the water sealing member 4 and is sleeved on the protrusion 9. The driving spring 82 is used for driving the water sealing member 4 to move downwards so as to open the water sealing member 4, so that the water outlet passage 3 is communicated with the inside of the kettle body 1. The lower end of the driving spring 82 is matched with the bulge 9, so that the position of the driving spring 82 abutting against the water sealing part 4 is limited on the bulge 9, the position of the lower end of the driving spring 82 is not changed, and the driving spring 82 is not slipped when driving the water sealing part 4.

Referring to fig. 5 and 6, in other embodiments, piston 81 includes a plug rod 811 penetrating mating hole 5, a sealing plug 812 fixed to plug rod 811, second pressure relief channel 7 is a pressure relief groove 72 opened on the outer side wall of plug rod 811, pressure relief groove 72 extends along the length direction of plug rod 811, and the length of pressure relief groove 72 is greater than the length of mating hole 5. When the kettle cover 2 is decompressed, the piston 81 moves downwards, the lower end of the pressure relief groove 72 is located below the matching hole 5, the upper end of the pressure relief groove 72 is located above the matching hole 5, gas below the water sealing part 4 can directly enter the pressure relief groove 72 and move to the upper end of the pressure relief groove 72, then the gas enters the water outlet channel 3, the first pressure relief channel 6 does not need to flow through, and the exhaust efficiency is high. In addition, the longitudinal pressure relief groove 72 arranged on the plug rod 811 does not affect the matching between the plug rod 811 and the matching hole 5, and the stable sliding connection between the plug rod 811 and the matching hole 5 can be ensured.

Specifically, the number of the pressure relief grooves 72 is two or more, and the pressure relief grooves are uniformly distributed along the circumferential direction of the plug rod 811. The air flow velocity at the side of the plug 811 where the pressure relief groove 72 is formed is different from the air flow velocity at other positions, so that the plug 811 has a radial biasing force. The number of the pressure relief grooves 72 is two or more, and the pressure relief grooves are uniformly distributed along the circumferential direction, so that the resultant force of all the offset forces is zero, and the shaking of the plug rod 811 during pressure relief is reduced.

Specifically, sealing plug 812 is located at the bottom end of stem 811, and relief groove 72 extends along stem 811 to sealing plug 812. The sealing plug 812 serves to seal the first pressure relief passage 6 and the second pressure relief passage 7. When the sealing plug 812 leaves the water sealing member 4, the lower end of the pressure relief groove 72 extends to the sealing plug 812, and can be immediately used for pressure relief without delay, so that the timeliness of the pressure relief is ensured.

In other embodiments, the lower end of the pressure relief groove 72 is spaced 5mm from the sealing plug 812, and when the sealing plug 812 leaves the water sealing member 4, the lower end of the pressure relief groove 72 cannot be used immediately for pressure relief and air intake, and the pressure relief groove 72 can only function when the pressure relief plug leaves the water sealing member 4 by more than 5 mm.

In this embodiment, when the pot lid 2 is sealed, the piston 81 moves upward to block the lower portions of the first pressure relief channel 6 and the second pressure relief channel 7, and meanwhile, the piston 81 can pull up the water sealing member 4 and drive the water sealing member 4 to move upward.

In other embodiments, when the lid 2 is sealed, the piston 81 moves downward and blocks the first pressure relief passage 6 and the second pressure relief passage 7 from above.

Referring to fig. 1 and 3, in the embodiment, the pot body 1 is provided with an air inlet channel 11, and the air inlet channel 11 is directly communicated with the water outlet channel 3. When the kettle cover 2 discharges water, the upper end opening of the water outlet channel 3 discharges water, the air inlet channel 11 admits air to the kettle cover 2 so as to balance the air pressure of the water outlet channel 3 and the inner wall of the kettle body 1 relative to the atmosphere, and the water outlet channel 3 can stably and continuously discharge water.

Example two:

the difference between the present embodiment and the first embodiment is characterized in that: the second pressure relief channel 7 is not in direct communication with the first pressure relief channel 6, i.e. the first pressure relief channel 6 and the second pressure relief channel 7 are not in communication or are in indirect communication.

The lower level of the present embodiment is that the first pressure relief passage 6 and the second pressure relief passage 7 are indirectly communicated. The first pressure relief channel 6 is communicated with the water outlet channel 3, the second pressure relief channel 7 is also communicated with the water outlet channel 3, however, the positions of the first pressure relief channel 6 and the second pressure relief channel 7 which are connected with the water outlet channel 3 are different, and the gas of the first pressure relief channel 6 flows to the second pressure relief channel 7 and must firstly pass through the water outlet channel 3.

Specifically, the second pressure release passage 7 is a pressure release hole 71 formed in the water sealing member 4, the pressure release hole 71 is used for communicating the water outlet passage 3 with the inner wall of the kettle body 1, and the length from the pressure release hole 71 to the matching hole 5 is smaller than the width of the sealing plug 812. When the kettle lid 2 is sealed, the part of the sealing plug 812 close to the stem 811 is used for sealing the first pressure relief passage 6, and the part of the sealing plug 812 facing away from the stem 811 is used for sealing the second pressure relief passage 7.

In other embodiments, the first pressure relief channel 6 and the second pressure relief channel 7 are not communicated, and the second pressure relief channel 7 does not pass through the water outlet channel 3, but is directly communicated with the atmosphere. The first pressure relief channel 6 and the second pressure relief channel 7 are not interfered with each other, and the work is more reliable.

Example three:

referring to fig. 1 and 2, the thermos comprises a kettle body 1 and a kettle cover 2 covering the kettle body 1.

A water outlet channel 3 for communicating the inside of the kettle body 1 with the atmosphere is arranged in the kettle cover 2. Specifically, the upper end of the water outlet channel 3 is communicated with the atmosphere, and the lower end of the water outlet channel 3 is communicated with the inside of the kettle body 1. The lower end of the water outlet channel 3 is covered with a water sealing part 4, and the water sealing part 4 is used for sealing the lower end of the water outlet channel 3 so as to limit the water in the kettle body 1 to flow to the kettle cover 2.

The kettle cover 2 is provided with a driving component 8 for driving the water sealing part 4 to open or close. The driving component 8 is provided with a return spring 13 and a baffle plate 12. The return spring 13 is sleeved outside the driving assembly 8, and the blocking piece 12 is fixed on the driving assembly 8 and is positioned above the return spring 13. The upper end of the return spring 13 is abutted against the baffle 12, and the lower end of the return spring 13 is abutted against the bottom wall of the pot lid 2.

When the kettle cover 2 discharges water, the driving component 8 moves downwards and overcomes the elasticity of the return spring 13 to drive the water sealing part 4 to move downwards, so that the water outlet channel 3 is opened; after the kettle lid 2 is discharged, the return spring 13 applies force to the blocking piece 12, so that the blocking piece 12 drives the driving component 8 to move upwards, and further drives the water sealing piece 4 to close the water outlet channel 3.

Water outlet channel 3 above water sealing piece 4 encircles 8 a week of drive assembly, is located drive assembly 8 outlet channel 3 all around and fully communicates to guarantee that 8 atmospheric pressure all around of drive assembly keeps unanimous, and then reduce drive assembly 8 and take place crooked probably, make drive assembly 8 not take place the skew to the point of application of force of water sealing piece 4, the reliability is higher.

Referring to fig. 5 and 7, specifically, the blocking piece 12 is provided with a mounting hole 121 through which the driving assembly 8 passes, a clamping rib 10 is fixed on the driving assembly 8, and the clamping rib 10 passes through the mounting hole 121 along with the driving assembly 8 and is clamped at the edge of the mounting hole 121. The blocking piece 12 is matched with the driving assembly 8 in a clamping mode, so that the blocking piece 12 is convenient to detach from the driving assembly 8, and a user can replace the return spring 13 subsequently. In addition, the clamping rib 10 is arranged on the driving assembly 8, and not only can be used for driving the baffle plate 12 to move downwards, but also can enhance the structural strength of the driving assembly 8. The number of the clamping ribs 10 is more than three, and the clamping ribs are evenly distributed along the circumferential direction of the side wall of the driving assembly 8.

In other embodiments, the locking rib 10 is disposed on the stop 12 and engages the drive assembly 8 for locking.

In this embodiment, an avoiding hole 122 for the clamping rib 10 to pass through is formed at the edge of the mounting hole 121. The number of the avoiding holes 122 is the same as that of the clamping ribs 10, and the distribution intervals correspond to the clamping ribs 10. The blocking process of the blocking piece 12 and the driving assembly 8 is as follows: firstly, the return spring 13 is sleeved outside the driving component 8; a blocking piece 12 is sleeved on the upper end of the return spring 13, and the blocking piece 12 is pressed downwards to overcome the elastic force of the return spring 13; the upper end of the driving component 8 passes through the mounting hole 121; the clamping rib 10 of the driving assembly 8 passes through the avoidance hole 122; then the baffle plate 12 is rotated, so that the clamping ribs 10 are staggered with the avoidance holes 122; finally, the two ends of the blocking piece 12 are respectively propped by the clamping rib 10 and the return spring 13. The avoiding hole 122 can reduce the interference of the clamping rib 10 on the installation of the driving assembly 8 and the baffle plate 12

Specifically, the upper end edge of the mounting hole 121 is provided with more than three clamping grooves 123, and the clamping grooves 123 are circumferentially distributed along the edge of the mounting hole 121. After the card muscle 10 passed the mounting hole 121, rotate separation blade 12 and make card muscle 10 just insert to draw-in groove 123 to restriction separation blade 12 is relative drive assembly 8 circumferential direction, and then guarantee the stable joint cooperation of separation blade 12 and drive assembly 8, in order to avoid card muscle 10 to pass and dodge hole 122.

There is only one slot 123 between two avoiding holes 122, and the distance from the slot 123 to two adjacent avoiding holes 122 is equal. When the blocking sheet 12 needs to be detached, the blocking sheet 12 can rotate forward or backward by the same angle, so that the clamping rib 10 is located above the avoiding hole 122. The user does not need to remember the forward and reverse rotation directions of the baffle 12, and the disassembly is convenient.

In this embodiment, the width of the rib 10 in the direction away from the driving unit 8 gradually increases from top to bottom. Big end up is big about calorie muscle 10, and when drive assembly 8 passed mounting hole 121 from the bottom up, calorie muscle 10 upper end can insert the hole 122 of dodging less easily to guide the card muscle 10 lower extreme and pass the hole 122 of dodging. In other embodiments, the width of the rib 10 may not vary along the longitudinal direction of the driving assembly 8.

In this embodiment, the driving assembly 8 includes a piston 81 penetrating the water sealing member 4, and a driving spring 82 fitted over the piston 81. The piston 81 comprises a plug rod 811 penetrating the water sealing member 4, and a sealing plug 812 fixed at the lower end of the plug rod 811 and located below the water sealing member 4, wherein the sealing plug 812 is used for dragging the bottom of the water sealing member 4. The upper end of the driving spring 82 is abutted against the inner wall of the water outlet channel 3, and simultaneously, the lower end of the driving spring 82 is abutted against the top surface of the water sealing part 4, so that the driving spring 82 is in a compressed state. The drive spring 82 is used to drive the water seal 4 away from the kettle lid 2.

Specifically, the water sealing member 4 is provided with a matching hole 5 for the plug rod 811 to pass through, and a first pressure relief passage 6 for communicating the water outlet passage 3 with the interior of the kettle body 1 is formed between the matching hole 5 and the plug rod 811. When the piston 81 moves upward, the sealing plug 812 abuts against the edge of the matching hole 5 to seal the first pressure relief passage 6, and simultaneously drives the water sealing member 4 to move upward to seal the water outlet passage 3.

The water sealing piece 4 is provided with a bulge 9, and the lower end of the driving spring 82 is sleeved on the outer side wall of the bulge 9. The lower end of the driving spring 82 is matched with the bulge 9, so that the position of the driving spring 82 abutting against the water sealing part 4 is limited on the bulge 9, the position of the lower end of the driving spring 82 is not changed, and the driving spring 82 is not slipped when driving the water sealing part 4.

The working process is as follows:

when the kettle cover 2 is required to discharge water, the piston 81 is firstly pressed down, so that the piston 81 moves downwards; the sealing plug 812 leaves the water sealing part 4, so that the first pressure relief passage 6 is opened, the gas in the kettle body 1 enters the water outlet passage 3, the air pressures at the upper end and the lower end of the water sealing part 4 are consistent, and the upper pressure of the high-pressure gas in the kettle body 1 on the water sealing part 4 disappears; the driving spring 82 drives the water sealing part 4 to move downwards, and the lower end of the water outlet channel 3 is opened.

After the kettle cover 2 discharges water, the downward pressure applied to the piston 81 disappears, and the return spring 13 drives the blocking piece 12 to move upwards and drives the piston 81 to move upwards; the sealing plug 812 at the lower end of the piston 81 abuts against the bottom of the water sealing piece 4 to seal the first pressure relief passage 6; the sealing plug 812 drives the water sealing member 4 to move upwards to seal the lower end of the water outlet passage 3.

The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.