CN212213518U - Heat preservation kettle - Google Patents

Abstract

The utility model discloses a heat preservation pot, including the kettle body and pot lid, be equipped with in the pot lid and be used for the internal portion of intercommunication kettle and atmospheric exhalant canal, the end cover closes under the exhalant canal and has sealed water spare, the mating holes has been seted up on the water spare, 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. 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; compare increase mating holes and piston fit clearance and promote the pressure release, this scheme can reduce and rock about the relative piston of water sealing spare, and then guarantees that water sealing spare can stably seal water outlet channel along with piston motion.

Description

Heat preservation kettle

Technical Field

The utility model 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.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a thermo jug, under the unchangeable prerequisite of mating holes and piston fit clearance, it can promote pressure release efficiency.

The above technical purpose of the present invention can be achieved by the following technical solutions: 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.

To sum up, the utility model discloses the beneficial effect who contrasts in prior art does:

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 akettle body 1 and akettle cover 2 covering thekettle body 1.

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

Referring to fig. 1 and 3, afitting hole 5 is formed in thewater sealing member 4, apiston 81 penetrates through thefitting hole 5, and thepiston 81 can move up and down relative to thefitting hole 5. A firstpressure relief channel 6 communicated with thewater outlet channel 3 is formed between the matchinghole 5 and thepiston 81, and at least one of thewater sealing piece 4 and thepiston 81 is provided with a secondpressure relief channel 7 communicated with thewater outlet channel 3; when thekettle cover 2 is sealed, thepiston 81 blocks the firstpressure relief channel 6 and the secondpressure relief channel 7; when thekettle lid 2 is vented, thepiston 81 opens thefirst vent passage 6 and thesecond vent passage 7.

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

Thispot lid 2 can be under the condition that does not change firstpressure release passageway 6 size, promotes the pressure release efficiency through secondpressure release passageway 7. Thispot lid 2 can be under the unchangeable prerequisite ofmating holes 5 andpiston 81 fit clearance promptly, and it can promote pressure release efficiency. Compareincrease mating holes 5 andpiston 81 fit clearance and promote the pressure release, this scheme can reduce and rock about 4relative pistons 81 of water sealing spare, and then guarantees that water sealing spare 4 can stably sealoutlet channel 3 along with the motion ofpiston 81.

In this embodiment, the firstpressure relief channel 6 is directly communicated with the secondpressure relief channel 7, and the firstpressure relief channel 6 and the secondpressure relief channel 7 relieve pressure together. Firstpressure release channel 6 and secondpressure 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 thekettle body 1 to the pressure release is stabilized in the guarantee.

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

The border ofmating holes 5 upwards extends and forms arch 9, and protruding 9 can strengthen the structural strength onmating holes 5 limit and make the shape ofmating holes 5 not change, and then avoidmating holes 5 to change and arouse that firstpressure release channel 6 changes. Theprojection 9 is annular and surrounds thefitting hole 5. The pressure relief holes 71 are formed in theprotrusion 9, and the number of the pressure relief holes 71 is more than two and is distributed along the circumferential direction of theprotrusion 9. Through setting up pressure release hole 71 onarch 9, can reduce to set up the influence of pressure release hole 71 to water-sealingmember 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 themating hole 5 border, that is, firstpressure release channel 6 and secondpressure release channel 7 converge atmating hole 5, can make things convenient forpiston 81 to seal firstpressure release channel 6 and secondpressure release channel 7.

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

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

Referring to fig. 5 and 6, in other embodiments,piston 81 includes aplug rod 811 penetratingmating hole 5, a sealingplug 812 fixed to plugrod 811, secondpressure relief channel 7 is apressure relief groove 72 opened on the outer side wall ofplug rod 811,pressure relief groove 72 extends along the length direction ofplug rod 811, and the length ofpressure relief groove 72 is greater than the length ofmating hole 5. When thekettle cover 2 is decompressed, thepiston 81 moves downwards, the lower end of thepressure relief groove 72 is located below thematching hole 5, the upper end of thepressure relief groove 72 is located above thematching hole 5, gas below thewater sealing part 4 can directly enter thepressure relief groove 72 and move to the upper end of thepressure relief groove 72, then the gas enters thewater outlet channel 3, the firstpressure relief channel 6 does not need to flow through, and the exhaust efficiency is high. In addition, the longitudinalpressure relief groove 72 arranged on theplug rod 811 does not affect the matching between theplug rod 811 and thematching hole 5, and the stable sliding connection between theplug rod 811 and thematching hole 5 can be ensured.

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

Specifically, sealingplug 812 is located at the bottom end ofstem 811, andrelief groove 72 extends alongstem 811 to sealingplug 812. The sealingplug 812 serves to seal the firstpressure relief passage 6 and the secondpressure relief passage 7. When the sealingplug 812 leaves thewater sealing member 4, the lower end of thepressure relief groove 72 extends to the sealingplug 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 thepressure relief groove 72 is spaced 5mm from the sealingplug 812, and when the sealingplug 812 leaves thewater sealing member 4, the lower end of thepressure relief groove 72 cannot be used immediately for pressure relief and air intake, and thepressure relief groove 72 can only function when the pressure relief plug leaves thewater sealing member 4 by more than 5 mm.

In this embodiment, when thepot lid 2 is sealed, thepiston 81 moves upward to block the lower portions of the firstpressure relief channel 6 and the secondpressure relief channel 7, and meanwhile, thepiston 81 can pull up thewater sealing member 4 and drive thewater sealing member 4 to move upward.

In other embodiments, when thelid 2 is sealed, thepiston 81 moves downward and blocks the firstpressure relief passage 6 and the secondpressure relief passage 7 from above.

Referring to fig. 1 and 3, in the embodiment, thepot body 1 is provided with anair inlet channel 11, and theair inlet channel 11 is directly communicated with thewater outlet channel 3. When thekettle cover 2 discharges water, the upper end opening of thewater outlet channel 3 discharges water, theair inlet channel 11 admits air to thekettle cover 2 so as to balance the air pressure of thewater outlet channel 3 and the inner wall of thekettle body 1 relative to the atmosphere, and thewater 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 secondpressure relief channel 7 is not in direct communication with the firstpressure relief channel 6, i.e. the firstpressure relief channel 6 and the secondpressure relief channel 7 are not in communication or are in indirect communication.

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

Specifically, the secondpressure release passage 7 is a pressure release hole 71 formed in thewater sealing member 4, the pressure release hole 71 is used for communicating thewater outlet passage 3 with the inner wall of thekettle body 1, and the length from the pressure release hole 71 to thematching hole 5 is smaller than the width of the sealingplug 812. When thekettle lid 2 is sealed, the part of the sealingplug 812 close to thestem 811 is used for sealing the firstpressure relief passage 6, and the part of the sealingplug 812 facing away from thestem 811 is used for sealing the secondpressure relief passage 7.

In other embodiments, the firstpressure relief channel 6 and the secondpressure relief channel 7 are not communicated, and the secondpressure relief channel 7 does not pass through thewater outlet channel 3, but is directly communicated with the atmosphere. The firstpressure relief channel 6 and the secondpressure 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 akettle body 1 and akettle cover 2 covering thekettle body 1.

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

Thekettle cover 2 is provided with adriving component 8 for driving thewater sealing part 4 to open or close. Thedriving component 8 is provided with areturn spring 13 and abaffle plate 12. Thereturn spring 13 is sleeved outside the drivingassembly 8, and the blockingpiece 12 is fixed on the drivingassembly 8 and is positioned above thereturn spring 13. The upper end of thereturn spring 13 is abutted against thebaffle 12, and the lower end of thereturn spring 13 is abutted against the bottom wall of thepot lid 2.

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

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

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

In other embodiments, the lockingrib 10 is disposed on thestop 12 and engages thedrive assembly 8 for locking.

In this embodiment, an avoidinghole 122 for the clampingrib 10 to pass through is formed at the edge of the mountinghole 121. The number of the avoidingholes 122 is the same as that of the clampingribs 10, and the distribution intervals correspond to the clampingribs 10. The blocking process of the blockingpiece 12 and the drivingassembly 8 is as follows: firstly, thereturn spring 13 is sleeved outside thedriving component 8; a blockingpiece 12 is sleeved on the upper end of thereturn spring 13, and the blockingpiece 12 is pressed downwards to overcome the elastic force of thereturn spring 13; the upper end of thedriving component 8 passes through the mountinghole 121; the clampingrib 10 of the drivingassembly 8 passes through theavoidance hole 122; then thebaffle plate 12 is rotated, so that the clampingribs 10 are staggered with the avoidance holes 122; finally, the two ends of the blockingpiece 12 are respectively propped by the clampingrib 10 and thereturn spring 13. The avoidinghole 122 can reduce the interference of the clampingrib 10 on the installation of the drivingassembly 8 and thebaffle plate 12

Specifically, the upper end edge of the mountinghole 121 is provided with more than three clampinggrooves 123, and the clampinggrooves 123 are circumferentially distributed along the edge of the mountinghole 121. After thecard muscle 10 passed the mountinghole 121, rotateseparation blade 12 and makecard muscle 10 just insert to draw-ingroove 123 torestriction separation blade 12 isrelative drive assembly 8 circumferential direction, and then guarantee the stable joint cooperation ofseparation blade 12 and driveassembly 8, in order to avoidcard muscle 10 to pass and dodgehole 122.

There is only oneslot 123 between two avoidingholes 122, and the distance from theslot 123 to two adjacent avoidingholes 122 is equal. When the blockingsheet 12 needs to be detached, the blockingsheet 12 can rotate forward or backward by the same angle, so that the clampingrib 10 is located above the avoidinghole 122. The user does not need to remember the forward and reverse rotation directions of thebaffle 12, and the disassembly is convenient.

In this embodiment, the width of therib 10 in the direction away from the drivingunit 8 gradually increases from top to bottom. Big end up is big aboutcalorie muscle 10, and whendrive assembly 8 passed mountinghole 121 from the bottom up,calorie muscle 10 upper end can insert thehole 122 of dodging less easily to guide thecard muscle 10 lower extreme and pass thehole 122 of dodging. In other embodiments, the width of therib 10 may not vary along the longitudinal direction of the drivingassembly 8.

In this embodiment, the drivingassembly 8 includes apiston 81 penetrating thewater sealing member 4, and a drivingspring 82 fitted over thepiston 81. Thepiston 81 comprises aplug rod 811 penetrating thewater sealing member 4, and a sealingplug 812 fixed at the lower end of theplug rod 811 and located below thewater sealing member 4, wherein the sealingplug 812 is used for dragging the bottom of thewater sealing member 4. The upper end of the drivingspring 82 is abutted against the inner wall of thewater outlet channel 3, and simultaneously, the lower end of the drivingspring 82 is abutted against the top surface of thewater sealing part 4, so that the drivingspring 82 is in a compressed state. Thedrive spring 82 is used to drive thewater seal 4 away from thekettle lid 2.

Specifically, thewater sealing member 4 is provided with amatching hole 5 for theplug rod 811 to pass through, and a firstpressure relief passage 6 for communicating thewater outlet passage 3 with the interior of thekettle body 1 is formed between the matchinghole 5 and theplug rod 811. When thepiston 81 moves upward, the sealingplug 812 abuts against the edge of thematching hole 5 to seal the firstpressure relief passage 6, and simultaneously drives thewater sealing member 4 to move upward to seal thewater outlet passage 3.

Thewater sealing piece 4 is provided with abulge 9, and the lower end of the drivingspring 82 is sleeved on the outer side wall of thebulge 9. The lower end of the drivingspring 82 is matched with thebulge 9, so that the position of the drivingspring 82 abutting against thewater sealing part 4 is limited on thebulge 9, the position of the lower end of the drivingspring 82 is not changed, and the drivingspring 82 is not slipped when driving thewater sealing part 4.

The working process is as follows:

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

After thekettle cover 2 discharges water, the downward pressure applied to thepiston 81 disappears, and thereturn spring 13 drives the blockingpiece 12 to move upwards and drives thepiston 81 to move upwards; the sealingplug 812 at the lower end of thepiston 81 abuts against the bottom of thewater sealing piece 4 to seal the firstpressure relief passage 6; the sealingplug 812 drives thewater sealing member 4 to move upwards to seal the lower end of thewater outlet passage 3.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims (10)

1. 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.

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.

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