CN115140419A

CN115140419A - Airtight tank

Info

Publication number: CN115140419A
Application number: CN202210968972.4A
Authority: CN
Inventors: 赖永霖
Original assignee: Dongguan Sisi Packaging Co ltd
Current assignee: Dongguan Sisi Packaging Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-10-04

Abstract

The invention provides an airtight tank, comprising a bottle cap, a metal cap and a bottle body. The top of the bottle body is provided with an externally threaded sleeve portion, and the bottom of the bottle cap is provided with an internally threaded hole matching the externally threaded sleeve portion. It is movably arranged on the top of the inner threaded hole and the bottom of which is fixedly connected with an elastomer sealing ring corresponding to the top of the outer threaded sleeve. The middle part of the metal cap is surrounded by the bridge-shaped bone position to form a shrapnel part that protrudes toward the top side of the bottle cap, and the center of the top wall of the inner thread hole is provided with a pressure bone position corresponding to the bridge-shaped bone position along the circumferential direction; When the hole is connected with the external thread sleeve part in place, the elastomer sealing ring will abut on the top of the external thread sleeve part to seal between the bottle cap and the bottle body, and the pressurized bone will abut on the bridge bone and The shrapnel part is recessed to the side of the bottle body, and it can be judged according to the sound whether the sealed can is tightened to a sealed state, which has a good sealing effect and can be used repeatedly.

Description

Airtight tank

Technical Field

The invention relates to the technical field of sealed tanks, in particular to a sealed tank.

Background

Various types of seal cans are derived from various seal cans on the market at present according to different cost, processing technology and use convenience, the sealing effect achieved by the seal cans is different, the thread seal cans of basic types adopt an elastic body as a sealing means, a gasket or an elastic sheet is placed between the cover and the bottle body, and the sealing effect is achieved through the gasket or the elastic sheet when the cover is locked; the manual pump type sealing tank and the like are used for pumping and sealing the tank body through the manual pump; and the tank body is in a vacuum pumping mode, so that the vacuum effect is directly lost after the tank body is opened.

At present, the most used and simplest sealing can is sealed in a threaded screwing mode, when a user screws the sealing can, the user cannot accurately judge the screwing in place, the sealing effect of the sealing can is difficult to guarantee, in order to achieve the better sealing effect, the user can only try to screw the sealing can to the tightest state, but the sealing can is difficult to open when the sealing can is opened, the thread is easy to wear, the sealing effect is increasingly poor, and the expected use effect cannot be achieved.

Disclosure of Invention

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an airtight container that can improve the sealing performance of the airtight container when the airtight container is screwed down.

The airtight tank comprises a bottle cap, a metal cap and a bottle body, wherein an external thread sleeve part is arranged at the top of the bottle body, an internal thread hole matched with the external thread sleeve part is arranged at the bottom of the bottle cap, the metal cap is movably arranged at the top of the internal thread hole, the bottom of the metal cap is fixedly connected with an elastomer sealing ring corresponding to the top end of the external thread sleeve part, a bridge-shaped bone position protruding towards the top side of the bottle cap is arranged at the center of the metal cap along the circumferential direction, an elastic sheet part protruding towards the top side of the bottle cap is formed at the middle part of the metal cap under the surrounding of the bridge-shaped bone position, and a pressurizing bone position corresponding to the bridge-shaped bone position is arranged at the center of the top wall of the internal thread hole along the circumferential direction; when the internal thread hole and the external thread sleeve part are connected in place, the elastic body sealing ring is abutted against the top end of the external thread sleeve part to seal between the bottle cap and the bottle body, and the pressurizing bone part is abutted against the bridge-shaped bone part and causes the elastic sheet part to be recessed towards the side of the bottle body.

Preferably, the center of the bottle cap is provided with a collision perforation hole leading to the elastic sheet part.

Preferably, the bottle lid contains the enclosing cover, the inner cup, the enclosing cover bottom is provided with the first holding tank that matches with the inner cup diameter, the inner cup activity sets up in first holding tank, first holding tank bottom week is along being provided with the annular spacing limit that prevents that the inner cup from droing from first holding tank, the height of inner cup is a respectively, b, a > b, the internal thread hole sets up in the bottom of inner cup, the top of inner cup has a plurality of screens steps along circumference evenly distributed, the roof of first holding tank has the muscle portion that corresponds the setting with the screens step along circumference evenly distributed, through impressing the inner cup toward first holding tank inboard, muscle portion will block between the two adjacent screens steps.

Preferably, a first collision perforation hole is arranged in the center of the top wall of the outer cover in a penetrating way.

Preferably, a second touch through hole corresponding to the first touch through hole is formed in the center of the top wall of the inner cover in a penetrating mode, an annular clamping portion matched with the second touch through hole is arranged on the periphery of the bottom of the first touch through hole in an extending mode towards the side wall of the second touch through hole, and the diameters of the first touch through hole and the second touch through hole are c and d respectively, wherein c > d.

Preferably, the bottom of the metal cover is circumferentially provided with an annular groove body corresponding to the top end of the external thread sleeve part, and the elastomer sealing ring is cured and molded in the annular groove body.

Preferably, the top of the internal thread hole is provided with a second accommodating groove matched with the metal cover, and the metal cover is movably arranged in the second accommodating groove.

Preferably, there are a plurality of screens arch along evenly distributed metal covering, and the screens arch borders on the lateral wall in order to prevent that the metal covering from droing from the second holding tank in the second holding tank.

The invention provides another airtight can, which comprises a bottle cap, a metal cap and a bottle body, wherein the bottle cap comprises an outer cap and an inner cap, a first accommodating groove matched with the inner cap is arranged at the bottom of the outer cap, the inner cap is movably arranged in the first accommodating groove, an external thread sleeve part is arranged at the top of the bottle body, an internal thread hole matched with the external thread sleeve part is arranged at the bottom of the inner cap, a first touch through hole and a second touch through hole which correspond to each other are respectively arranged on the top wall of the outer cap and the top wall of the inner cap in a penetrating way, an annular clamping part which exceeds the bottom end surface of the second touch through hole is arranged in the second touch through hole in an extending way along the peripheral edge of the first touch through hole, the metal cap is movably arranged at the top of the internal thread hole, the bottom of the metal cover is fixedly connected with an elastomer sealing ring corresponding to the top end of the external thread sleeve part, the center of the metal cover is circumferentially provided with a bridge-shaped bone position protruding towards the top wall side of the inner cover, the middle of the metal cover is surrounded by the bridge-shaped bone position to form an elastic sheet part protruding towards the top wall side of the inner cover, the bottom end of the annular clamping part is opposite to the bridge-shaped bone position, a plurality of clamping steps are circumferentially and uniformly distributed at the top of the inner cover, rib parts corresponding to the clamping steps are circumferentially and uniformly distributed at the top wall of the first accommodating groove, and the rib parts are clamped between two adjacent clamping steps by pressing the inner cover towards the inner side of the first accommodating groove; when the internal thread hole and the external thread sleeve part are connected in place, the elastic body sealing ring is abutted against the top end of the external thread sleeve part to seal between the inner cap and the bottle body, and the pressurizing bone part is abutted against the bridge-shaped bone part and causes the elastic sheet part to be recessed towards the side of the bottle body.

Preferably, first holding tank bottom is along being provided with the spacing limit of annular that prevents that the inner cup from coming off from first holding tank all around, and the height of first holding tank, inner cup is a respectively, b, and a > b, and internal thread hole top is provided with the second holding tank that matches with the metal cover, and the metal cover activity sets up in the second holding tank, and metal cover all around evenly distributed has a plurality of screens protruding, and the screens is protruding to border on the lateral wall in the second holding tank in order to prevent that the metal cover from coming off from the second holding tank.

The invention has the beneficial effects that: the invention provides an airtight can which is provided with a unique assembly structure, when in use, an internal thread hole of a bottle cap is sleeved on an external thread sleeve part of a bottle body and is screwed down in a rotating way, a metal cap with an elastomer sealing ring is movably arranged at the top of the internal thread hole, the center of the top of the metal cap and the center of the top wall of the internal thread hole are respectively provided with a corresponding bridge-shaped bone part and a pressurizing bone part, the middle part of the metal cap is surrounded by the bridge-shaped bone parts to form a spring plate part protruding towards the top side of the bottle cap, when the bottle cap and the bottle body are screwed down in place, the elastomer sealing ring is abutted against the top end of the external thread sleeve part to achieve the effect of strengthening the sealing property between the bottle cap and the bottle body, at the moment, the pressurizing bone part presses down the bridge-shaped bone part to simultaneously drive the spring plate part to recess towards the side of the bottle body, the spring plate part recessed downwards simultaneously generates clear sound, and the spring plate part keeps the downwards recessed state because the bottle body is in an airtight state, so that a user judges that the airtight can be in a sealing state according to the sound; when the bottle cap is unscrewed from the bottle body, the bottle body is in a non-airtight state, the elastic sheet part restores the deformation to be in an upward convex state, and the upward convex elastic sheet part generates clear sound again, so that a user can judge that the sealed tank is in the non-airtight state according to the sound. The sealing device is simple in structure, can judge whether the sealing tank is screwed down to a sealing state according to sound, has a good sealing effect, and can be used repeatedly.

Drawings

Fig. 1 illustrates a schematic structural view of the external form of the present invention.

Fig. 2 illustrates a structural view of the outer cap of the present invention.

Fig. 3 illustrates a structural view of the inner cap of the present invention.

Fig. 4 illustrates an assembly structure of the outer cap and the inner cap according to the present invention.

Fig. 5 illustrates an exploded view of the present invention.

Fig. 6 illustrates a schematic cross-sectional structure of the first embodiment of the present invention.

Fig. 7 illustrates a schematic cross-sectional structure of a second embodiment of the present invention.

Fig. 8 illustrates a schematic cross-sectional structure of a third embodiment of the present invention.

Fig. 9 illustrates a schematic cross-sectional structure of a fourth embodiment of the present invention.

Fig. 10 illustrates a schematic cross-sectional structure of a fifth embodiment of the present invention.

The reference numbers illustrate: the bottle cap 10, the internal thread hole 11, the second receiving groove 110, the pressurizing rib 12, the outer cap 13, the first receiving groove 130, the annular limiting edge 131, the rib portion 132, the first collision perforation 133, the annular clamping portion 134, the inner cap 14, the clamping step 140, the second collision perforation 141, the collision perforation 15, the metal cap 20, the elastomer sealing ring 21, the bridge rib 22, the spring piece portion 23, the annular groove 24, the clamping protrusion 25, the bottle body 30, and the external thread sleeve portion 31.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments.

All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without inventive effort, are within the scope of protection of the disclosure.

Refer to fig. 1-10.

Referring to fig. 6, the present invention provides an airtight container, including a bottle cap 10, a metal cap 20, a bottle body 30, an external thread sleeve portion 31 is disposed at the top of the bottle body 30, an internal thread hole 11 matching with the external thread sleeve portion 31 is disposed at the bottom of the bottle cap 10, the metal cap 20 is movably disposed at the top of the internal thread hole 11, and the bottom of the metal cap 20 is fixedly connected with an elastomer sealing ring 21 corresponding to the top end of the external thread sleeve portion 31, a bridge-shaped bone portion 22 protruding toward the top of the bottle cap 10 is disposed at the center of the metal cap 20 along the circumferential direction, an elastic sheet portion 23 protruding toward the top of the bottle cap 10 is formed at the middle of the metal cap 20 under the surrounding of the bridge-shaped bone portion 22, and a pressurizing bone portion 12 disposed at the center of the top wall of the internal thread hole 11 along the circumferential direction and corresponding to the bridge-shaped bone portion 22; when the internally threaded hole 11 and the externally threaded sleeve portion 31 are connected in place, the elastomer sealing ring 21 will abut against the top end of the externally threaded sleeve portion 31 to seal between the cap 10 and the body 30, and the pressure rib 12 will abut against the bridge rib 22 and cause the elastic piece portion 23 to be recessed toward the body 30.

During specific assembly, the elastomer sealing ring 21 is fixedly connected to the bottom of the metal cover 20, then the metal cover 20 is assembled to the top of the internal threaded hole 11, the metal cover 20 can have a certain longitudinal movement range at the top of the internal threaded hole 11, and the pressurizing bone 12 corresponds to the bridge-shaped bone 22. When the sealing can is required to be screwed, the internal thread hole 11 is sleeved on the external thread sleeve part 31 to be screwed in a rotating mode, when the bottle cap 10 is screwed in place, the top end of the external thread sleeve part 31 abuts against the elastic body sealing ring 21, so that the effect of enhancing the sealing performance between the bottle cap 10 and the bottle body 30 is achieved, meanwhile, the bridge-shaped bone part 22 is pressed down by the pressurizing bone part 12, the elastic piece part 23 is sunken towards the side of the bottle body 30, clear sound is generated due to the deformation of the elastic piece part 23, a user can judge that the sealing can is screwed in place according to the deformation sound of the elastic piece part 23, and therefore the sealing can is guaranteed to be in an airtight state, and the elastic piece part 23 is kept in a downward sunken state due to the fact that the bottle body 30 is in an airtight state; when the bottle cap 10 is unscrewed from the bottle body 30, the elastic body sealing ring 21 and the external thread sleeve part 31 are separated, gas enters the bottle body 30, the bottle body 30 becomes a non-airtight state, the elastic sheet part 23 restores the deformation to an upward convex state, and the upward convex elastic sheet part 23 generates clear sound again, so that a user can judge that the sealed can is opened according to the deformation sound of the elastic sheet part 23, and the sealed can is in a non-sealed state. The sealing device is simple in structure, can judge whether the sealing tank is screwed down to a sealing state according to sound, has a good sealing effect, and can be used repeatedly.

Referring to fig. 7, the bottle cap 10 is provided with a through hole 15 extending through the center thereof to the elastic piece portion 23 according to the above embodiment. After the bottle cap 10 is in threaded connection with the bottle body 30, the deformation condition of the elastic sheet part 23 can be observed through the collision through hole 15, when the sealed can is in an airtight state, the elastic sheet part 23 is sunken towards the bottle body 30, when the sealed can is in a non-airtight state, the elastic sheet part 23 keeps an upward bulging state, and a user can confirm whether the sealed can is in a sealing state or not by observing the concave-convex condition of the elastic sheet part 23, so that a product in the sealed can is effectively sealed.

Referring to fig. 8-10, based on the above embodiment, the bottle cap 10 includes the outer cap 13, the inner cap 14, the bottom of the outer cap 13 is provided with the first receiving groove 130 matched with the diameter of the inner cap 14, the inner cap 14 is movably disposed in the first receiving groove 130, the circumferential edge of the bottom end of the first receiving groove 130 is provided with the annular limiting edge 131 for preventing the inner cap 14 from falling off from the first receiving groove 130, the heights of the first receiving groove 130 and the inner cap 14 are respectively a, b and a > b, the internal thread hole 11 is disposed at the bottom of the inner cap 14, the top of the inner cap 14 is circumferentially and uniformly distributed with a plurality of clamping steps 140, the top wall of the first receiving groove 130 is circumferentially and uniformly distributed with the rib portions 132 corresponding to the clamping steps 140, and the rib portions 132 are clamped between two adjacent clamping steps 140 by pressing the inner cap 14 into the inner side of the first receiving groove 130. When the bottle cap 10 is assembled, the metal cap 20 is assembled to the top of the internal threaded hole 11 of the inner cap 14, the inner cap 14 is assembled from the bottom end of the first receiving groove 130 through the annular limiting edge 131, and after the inner cap 14 is assembled into the first receiving groove 130, the inner cap 14 can rotate in the first receiving groove 130 under the limiting of the annular limiting edge 131 and has a certain longitudinal movement range. When the bottle cap 10 needs to be screwed on the bottle body 30, the internal thread hole 11 is sleeved on the external thread sleeve part 31, the bottle cap 10 is pressed downwards to enable the inner cap 14 to be closed at the top of the first accommodating groove 130, so that the rib part 132 is clamped between the two adjacent clamping steps 140, at the moment, the inner cap 14 can be driven to synchronously rotate by rotating the outer cap 13, and the bottle cap 10 is screwed on the bottle body 30; when the sealed can needs to be opened, the bottle cap 10 is pressed down again to close the inner cap 14 on the top of the first receiving groove 130, so that the rib 132 is clamped between the two adjacent clamping steps 140, and the inner cap 14 can be driven to rotate synchronously by rotating the outer cap 13 reversely, so that the bottle cap 10 is unscrewed from the bottle body 30. Through setting up muscle portion 132 and screens step 140, the user must make earlier when needing to twist inner cup 14 and push down the action to enclosing cover 13 in order to let inner cup 14 close behind the top of first holding tank 130, carries out the rotation action to enclosing cover 13 again, just so can twist inner cup 14 and move, can play child-proof's effect, avoids children to contact the product in the sealed jar, prevents the mistake and eats.

Referring to fig. 8, based on the above embodiment, the first through hole 133 is formed through the center of the top wall of the outer lid 13, so that the material of the outer lid 13 can be saved, the production cost can be reduced, and the sealed can is lighter and more beautiful.

Referring to fig. 9, according to the above embodiment, the center of the top wall of the inner lid 14 is provided with a second hitting through hole 141 corresponding to the first hitting through hole 133, the bottom peripheral edge of the first hitting through hole 133 extends to the side wall of the second hitting through hole 141 to form a ring-shaped engaging portion 134 matching with the second hitting through hole 141, and the diameters of the first hitting through hole 133 and the second hitting through hole 141 are c, d, and c > d, respectively. Set up corresponding first perforation 133 and second and hit perforation 141 on enclosing cover 13 and inner cup 14 respectively, and hit the bottom of perforation 133 to the second and hit perforation 141 lateral wall extension annular screens portion 134 at first, can play the guide effect to the activity of inner cup 14, when using the sealed tank, can observe the deformation state of shell fragment portion 23 through first hitting perforation 133 and second hitting perforation 141, and the sound that sends when shell fragment portion 23 takes place the deformation in the time of convenient shell fragment portion 23 deformation spreads out, conveniently judge according to combining the deformation state of naked eye observation shell fragment portion 23 and sound that the sealed tank is in encapsulated situation or not encapsulated situation.

Specifically, based on the above-described embodiment, the bottom of the metal cover 20 is circumferentially provided with the annular groove 24 corresponding to the top end of the externally threaded sleeve portion 31, and the elastomer seal ring 21 is cured and molded in the annular groove 24. The elastomer sealing ring 21 may be poured into the annular groove 24 by using soft glue, and after the soft glue is cured, the elastomer sealing ring 21 is formed on the annular groove 24.

Specifically, based on the above embodiment, the second receiving groove 110 matched with the metal cover 20 is disposed at the top of the internal threaded hole 11, and the metal cover 20 is movably disposed in the second receiving groove 110, so as to provide a moving space for the metal cover 20, ensure that the metal cover 20 can move adaptively when the sealing can is screwed down, ensure that the bridge-shaped bone position 22 can be pressed down by the pressing bone position 12, and further drive the elastic sheet portion 23 to deform concavely.

Specifically, based on the above embodiment, the plurality of retaining protrusions 25 are uniformly distributed on the periphery of the metal cover 20, and the retaining protrusions 25 are adjacent to the sidewalls of the second receiving groove 110 to prevent the metal cover 20 from falling off from the second receiving groove 110. The diameter ratio of second holding tank 110 is slightly bigger than the diameter of internal thread hole 11, and when assembling metal cover 20 into second holding tank 110, the protruding 25 of screens will be the block in second holding tank 110, avoids metal cover 20 to drop from second holding tank 110, ensures that the seal pot uses stably, has good sealed effect.

Referring to fig. 10, another airtight container provided by the present invention includes a bottle cap 10, a metal cap 20, and a bottle body 30, the bottle cap 10 includes an outer cap 13 and an inner cap 14, a first receiving groove 130 matching the inner cap 14 is disposed at the bottom of the outer cap 13, the inner cap 14 is movably disposed in the first receiving groove 130, an external thread sleeve portion 31 is disposed at the top of the bottle body 30, an internal thread hole 11 matching the external thread sleeve portion 31 is disposed at the bottom of the inner cap 14, a top wall of the outer cap 13 and a top wall of the inner cap 14 are respectively provided with a first through hole 133 and a second through hole 141, a circular clamping portion 134 exceeding a bottom end surface of the second through hole 141 is extended from a circumferential edge of the first through hole 133, the metal cap 20 is movably disposed at the top of the internal thread hole 11, an elastomer sealing ring 21 corresponding to a top end of the external thread sleeve portion 31 is fixedly connected to the bottom of the metal cap 20, a bridge-shaped rib portion 22 protruding toward a top wall side of the inner cap 14 is disposed at a center of the metal cap 20 along a circumferential edge, a central portion of the metal cap 20 under the surrounding of the bridge-shaped rib portion 22, a plurality of bridge-shaped rib portions 23 protruding toward a top wall of the receiving groove 14 are uniformly disposed at a top wall of the top wall, a top wall of the bridge-shaped clamping portion 140, a plurality of the adjacent rib portions 132, and a plurality of the bridge-shaped clamping portions are uniformly disposed along the inner cap 14, and are uniformly distributed on the inner cap, and are uniformly distributed along the inner cap, and are disposed adjacent top wall of the inner cap, and are uniformly distributed along the inner cap, and the inner wall, the inner cap 14, the adjacent top wall of the first clamping portion 140, the adjacent rib portions 132, and the inner cap 14; when the internally threaded bore 11 and the externally threaded sleeve portion 31 are connected in place, the elastomer seal ring 21 will abut against the tip of the externally threaded sleeve portion 31 to seal between the inner cap 14 and the body 30, and the pressure rib 12 will abut against the bridge rib 22 and cause the elastic piece portion 23 to be recessed toward the body 30.

During specific assembly, the metal cover 20 is assembled on the top of the internal threaded hole 11 of the inner cover 14, the inner cover 14 is assembled from the bottom end of the first accommodating groove 130, after the inner cover 14 is assembled in the first accommodating groove 130, the inner cover 14 can rotate in the first accommodating groove 130 and has a certain longitudinal movement range, at the moment, the first touch through hole 133 and the second touch through hole 141 are correspondingly arranged, the bottom end of the annular clamping portion 134 exceeds the bottom end of the second touch through hole 141 and points to the bridge-shaped bone position 22 on the metal cover 20, and the elastic sheet portion 23 can be observed through the first touch through hole 133 and the second touch through hole 141. When the bottle cap 10 needs to be screwed on the bottle body 30, the internal thread hole 11 is sleeved on the external thread sleeve part 31, the bottle cap 10 is pressed downwards to enable the inner cap 14 to be closed at the top of the first accommodating groove 130, so that the rib part 132 is clamped between the two adjacent clamping steps 140, at the moment, the inner cap 14 can be driven to synchronously rotate by rotating the outer cap 13, so that the bottle cap 10 is screwed on the bottle body 30, at the moment, the bottom end of the annular clamping part 134 presses the bridge-shaped bone part 22, the elastic sheet part 23 is caused to recess towards the side of the bottle body 30 and generates clear sound, the downward recess of the elastic sheet part 23 can be observed through the first collision through hole 133 and the second collision through hole 141, and therefore, a user can judge that the sealed can is in an airtight state; when the sealed tank needs to be opened, the bottle cap 10 is pressed down again to enable the inner cap 14 to be closed at the top of the first accommodating groove 130, so that the rib portion 132 is clamped between the two adjacent clamping steps 140, at the moment, the outer cap 13 can be rotated reversely to drive the inner cap 14 to rotate synchronously, so that the bottle cap 10 is unscrewed from the bottle body 30, the annular clamping portion 134 and the bridge-shaped bone portion 22 leave, after gas enters the bottle body 30, the elastic piece portion 23 protrudes upwards and generates clear sound, the downward protrusion of the elastic piece portion 23 can be observed through the first collision through hole 133 and the second collision through hole 141, and therefore a user can judge that the sealed tank is in a non-airtight state. The sealing device is simple in structure, can judge whether the sealing tank is screwed down to a sealing state according to sound, has a good sealing effect, and can be used repeatedly. Through setting up muscle portion 132 and screens step 140, the user must make earlier when needing to twist inner cup 14 and push down the action to enclosing cover 13 in order to let inner cup 14 close behind the top of first holding tank 130, carries out the rotation action to enclosing cover 13 again, just so can twist inner cup 14 and move, can play child-proof's effect, avoids children to contact the product in the sealed jar, prevents the mistake and eats.

Specifically, based on the above embodiment, the circumference of the bottom end of the first accommodating groove 130 is provided with the annular limiting edge 131 for preventing the inner cover 14 from falling off from the first accommodating groove 130, the heights of the first accommodating groove 130 and the inner cover 14 are respectively a, b, a > b, the top of the internal threaded hole 11 is provided with the second accommodating groove 110 matched with the metal cover 20, the metal cover 20 is movably arranged in the second accommodating groove 110, a plurality of clamping protrusions 25 are uniformly distributed on the circumference of the metal cover 20, and the clamping protrusions 25 are adjacent to the side wall of the second accommodating groove 110 to prevent the metal cover 20 from falling off from the second accommodating groove 110. The diameter of the second receiving groove 110 is slightly larger than the diameter of the internal threaded hole 11, the metal cover 20 is assembled into the second receiving groove 110 through the internal threaded hole 11, and the clamping protrusion 25 is clamped on the second receiving groove 110, so that the metal cover 20 can be prevented from being separated from the second receiving groove 110; the inner cap 14 is inserted from the bottom end of the first receiving groove 130 through the annular limiting edge 131, and the inner cap 14 can rotate in the first receiving groove 130 and has a certain longitudinal movement range under the limiting action of the annular limiting edge 131.

The above embodiments are merely illustrative of the preferred embodiments of the present invention, and not restrictive, and various changes and modifications to the technical solutions of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are intended to fall within the scope of the present invention defined by the appended claims.

Claims

1. The airtight tank is characterized by comprising a bottle cap, a metal cap and a bottle body, wherein an external thread sleeve part is arranged at the top of the bottle body, an internal thread hole matched with the external thread sleeve part is arranged at the bottom of the bottle cap, the metal cap is movably arranged at the top of the internal thread hole, the bottom of the metal cap is fixedly connected with an elastomer sealing ring corresponding to the top end of the external thread sleeve part, a bridge-shaped bone position protruding towards the top side of the bottle cap is arranged at the center of the metal cap along the circumferential direction, an elastic sheet part protruding towards the top side of the bottle cap is formed in the middle of the metal cap under the surrounding of the bridge-shaped bone position, and a pressurizing bone position corresponding to the bridge-shaped bone position is arranged at the center of the top wall of the internal thread hole along the circumferential direction; when the internal thread hole and the external thread sleeve part are connected in place, the elastic body sealing ring abuts against the top end of the external thread sleeve part to seal between the bottle cap and the bottle body, and the pressurizing bone abuts against the bridge bone and causes the elastic piece part to be sunken towards the bottle body side.

2. The airtight can of claim 1 wherein said cap has a central through hole leading to said tab portion.

3. The airtight tank of claim 1, wherein the bottle cap comprises an outer cover and an inner cover, a first accommodating groove matched with the inner cover in diameter is formed in the bottom of the outer cover, the inner cover is movably arranged in the first accommodating groove, a ring-shaped limiting edge is formed around the bottom end of the first accommodating groove and used for preventing the inner cover from falling off the first accommodating groove, the heights of the first accommodating groove and the inner cover are respectively a, b and a > b, the internal thread hole is formed in the bottom of the inner cover, a plurality of clamping steps are uniformly distributed on the top of the inner cover along the circumferential direction, a rib portion is uniformly distributed on the top wall of the first accommodating groove along the circumferential direction and corresponds to the clamping steps, the rib portion is pressed into the inner side of the first accommodating groove, and the rib portion is clamped into two adjacent clamping steps.

4. The hermetic container according to claim 3, wherein the top wall of the outer lid is provided with a first through hole extending through the center thereof.

5. The airtight can of claim 4, wherein a second touching through hole corresponding to the first touching through hole is formed through the center of the top wall of the inner cover, an annular clamping portion matched with the second touching through hole is formed by extending the bottom peripheral edge of the first touching through hole to the side wall of the second touching through hole, and the diameters of the first touching through hole and the second touching through hole are c, d, and c > d respectively.

6. The airtight tank of any one of claims 1 to 5 wherein the bottom of said metal lid is circumferentially provided with an annular groove corresponding to the top end of said external threaded sleeve portion, and said elastomer sealing ring is cured and molded in said annular groove.

7. The airtight can of claim 6, wherein a second receiving groove matched with the metal cover is provided at the top of the internally threaded hole, and the metal cover is movably arranged in the second receiving groove.

8. The airtight can of claim 7 wherein said metal cover has a plurality of retaining protrusions uniformly distributed around the periphery thereof, said retaining protrusions abutting on the sidewalls of said second receiving groove to prevent said metal cover from falling off said second receiving groove.

9. An airtight tank is characterized by comprising a bottle cap, a metal cap and a bottle body, wherein the bottle cap comprises an outer cap and an inner cap, a first accommodating groove matched with the inner cap is formed in the bottom of the outer cap, the inner cap is movably arranged in the first accommodating groove, an external thread sleeve part is arranged at the top of the bottle body, an internal thread hole matched with the external thread sleeve part is formed in the bottom of the inner cap, a first collision perforation and a second collision perforation which correspond to each other are respectively arranged on the top wall of the outer cap and the top wall of the inner cap in a penetrating manner, an annular clamping part exceeding the bottom end face of the second collision perforation is arranged in the second collision perforation in an extending manner from the peripheral edge of the first collision perforation, the metal cap is movably arranged at the top of the internal thread hole, an elastomer sealing ring corresponding to the top end of the external thread is fixedly connected to the bottom of the metal cap, a bridge-shaped bone position protruding towards the top wall of the inner cap is arranged in the center of the metal cap along the circumferential direction, an elastic sheet part protruding towards the top wall of the inner cap is formed in the middle of the metal cap under the surrounding of the bridge-shaped bone position, a plurality of bridge-shaped bone positions are uniformly distributed along the circumferential direction, and two clamping ribs are uniformly distributed on the top wall of the first clamping part and are arranged between the top wall and the first clamping rib and the first clamping part and the second collision perforation; when the internal thread hole and the external thread sleeve part are connected in place, the elastic body sealing ring abuts against the top end of the external thread sleeve part to seal between the inner cap and the bottle body, and the pressurizing bone abuts against the bridge bone and causes the elastic piece part to be sunken towards the bottle body side.

10. The airtight can of claim 9, wherein the bottom edge of the first receiving groove is provided with an annular limiting edge for preventing the inner lid from falling off the first receiving groove, the heights of the first receiving groove and the inner lid are a and b, a > b, respectively, the top of the internal thread hole is provided with a second receiving groove matched with the metal lid, the metal lid is movably arranged in the second receiving groove, a plurality of clamping protrusions are uniformly distributed on the edge of the metal lid, and the clamping protrusions are adjacent to the side wall of the second receiving groove to prevent the metal lid from falling off the second receiving groove.