CN215061241U - Non-repeated filling pressure bottle - Google Patents

Abstract

The utility model relates to a pressure vessel, concretely relates to non-repeated dress pressure bottle that fills. The utility model provides a non-repeated filling dress pressure bottle, its characterized in that includes the bottle, the bottle has the opening and constitutes and to have and hold the chamber, the bottle opening part is equipped with sealed lid, sealed lid rises with the bottle and rises to be fixed and sealed, sealed lid middle part has treats the portion of impaling and is connected with the piece of giving vent to anger, the piece of giving vent to anger is located hold the intracavity, the piece of giving vent to anger has the outlet channel who runs through both ends, outlet channel one end is for giving vent to anger the end and the orientation treat the portion of impaling, treat that the portion of impaling seals outlet channel gives vent to anger the end, just be equipped with the moving part in the outlet channel, the moving part moves along outlet channel to outlet channel inlet end side in order to cut off outlet channel. The utility model has the advantages of simple structure, leakproofness are better, enable the volume and do littleer, just the utility model discloses the non-repeated dress that fills effect is better still has.

Description

Non-repeated filling pressure bottle

Technical Field

The utility model relates to a pressure vessel, concretely relates to non-repeated dress pressure bottle that fills.

Background

Chinese patent No. 201621389519.4 discloses a non-refillable pressure bottle for filling high-pressure contents, which is complicated in structure because a valve needs to be non-refillable, and is usually fixed to the pressure bottle by welding. In order to ensure the use safety of the pressure bottle, a rupture disk needs to be welded on the side wall of the upper end of the bottle body of the pressure bottle.

Because the number of welding positions is large, the leakage possible points exist, the sealing performance is poor, the pressure of the content in the pressure bottle cannot be too high, and if more content needs to be filled into the pressure bottle, the pressure bottle needs to be made larger.

Chinese patent application No. 200620126175.8 discloses a pressure bottle for filling contents with small pressure, in which the sealing of the bottle body is performed by a sealing cap, and a valve for preventing the leakage of the contents in the pressure bottle is provided in the sealing cap. The structural strength of the bottle mouth of the pressure bottle is poor, the pressure bottle can only be used for filling a small amount of contents, the joint between the pressure bottle and the sealing cover can deform and cause gas leakage, the pressure bottle is not suitable for arranging the explosion-proof sheet due to the small size, and meanwhile, the pressure bottle has no non-repeated filling function.

Disclosure of Invention

The utility model aims at providing a simple structure, the leakproofness is better, and it is littleer to enable the volume to have a non-refillable pressure bottle of non-refillable dress function.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a non-repeated filling dress pressure bottle, its characterized in that includes the bottle, the bottle has the opening and constitutes and to have and hold the chamber, the bottle opening part is equipped with sealed lid, sealed lid rises with the bottle and rises to be fixed and sealed, sealed lid middle part has treats the portion of impaling and is connected with the piece of giving vent to anger, the piece of giving vent to anger is located hold the intracavity, the piece of giving vent to anger has the outlet channel who runs through both ends, outlet channel one end is for giving vent to anger the end and the orientation treat the portion of impaling, treat that the portion of impaling seals outlet channel gives vent to anger the end, just be equipped with the moving part in the outlet channel, the moving part moves in order to cut off outlet channel inlet end side along outlet channel, the moving part moves in order to make outlet channel link up along outlet channel outlet end side.

The utility model discloses a piece of giving vent to anger is not direct fixed with the bottle opening part, and flat or flaky sealed lid need not adopt welded mode and bottle fixed, and sealed lid adopts the tight mode that rises and bottle fixed sealed, can reduce the welding point to reduce the leakage point, with the leakproofness that improves the pressure bottle, so that can fill into more content in the pressure bottle, or make the volume of pressure bottle can do littleer under the circumstances of filling into the same amount content. Wherein, the utility model discloses during the pressure bottle use, impale the portion of impaling waiting of sealed lid through drilling tool, the moving part can move to outlet channel's the end of going out (the one end that closes on sealed lid) under the promotion of the content in the pressure bottle immediately, and the moving part can be promoted to remove the moving part to outlet channel's wall, the content can be derived through outlet channel and the sealed hole that covers. When the utility model discloses the pressure bottle carries out the secondary and fills the dress, high-pressure gas can promote the moving part to the inboard removal of pressure bottle to the realization is to gas outlet channel's wall, in order to restrict gaseous entering pressure bottle, in order to avoid gaseous secondary to adorn again, in order to guarantee the non-repeated dress function that fills of pressure bottle. The utility model discloses a piece department of giving vent to anger simple structure, it is small, light in weight, be convenient for fixed, even will give vent to anger the piece and fix the stable in structure who also can not influence out gas piece department on the sealed lid.

Preferably, the air outlet channel comprises a first air passage section close to the air outlet end of the air outlet channel and a second air passage section close to the air inlet end of the air outlet channel, the first air passage section is communicated with the second air passage section, the moving element comprises a first moving element section and a second moving element section, the first moving element section is larger than the second air passage section in inner diameter and is always located in the first air passage section, and the second moving element section is smaller than the second air passage section in inner diameter and extends into the second air passage section in outer diameter. Wherein, can block up the air flue two-stage section through the thicker moving part one section of moving part to realize the function of non-repeated filling.

Preferably, a first sealing ring is sleeved on one section of the moving part, which is close to the two sections of the moving part, and is used for sealing between the moving part and the two sections of the air passage, a first passing groove for passing contents in a pressure bottle is arranged on one section of the moving part, the first passing groove penetrates through two opposite ends of one section of the moving part, the end part, which is close to the first sealing ring, of the first passing groove is wholly or partially and relatively located on the circumferential outer side of the first sealing ring, and the distance between the part to be punctured and the two sections of the air passage is greater than the length of the one section of the moving part; the second air passage section is close to one section of opening of air passage and is open shape structure, first sealing washer has the sealed face that is used for the open shape structure contact with the second air passage section, sealed face is given vent to anger end to the air inlet end of air outlet channel and is extended to circumference inboard gradually by air outlet channel.

Wherein, through the counterbalance of first sealing washer and air flue two-section to realize outlet channel's wall, thereby avoid the utility model discloses the pressure bottle is filled the dress once more. Wherein, the setting of air flue two-section and first sealing washer structure can guarantee sealed face area of contact to further improve sealed effect. Wherein, through setting up first groove of passing through, so that the utility model discloses it is higher to give vent to anger the effect during use to can reduce area of contact under moving part and the passageway clearance fit's of giving vent to anger the condition, make the moving part change through the mode that reduces contact friction and promoted. The distance between the part to be punctured and the second section of the air passage is greater than the length of the first section of the moving part so as to ensure the moving space of the moving part, and meanwhile, the space can be used for containing air so as to ensure the contact between the first sealing ring and the second section of the air passage through the balance between the air pressure in the first section of the air passage and the pressure of the content in the pressure bottle, so that the content in the pressure bottle is further prevented from leaking into the first section of the air passage; wherein, also can set up the spring in one section of air flue, the elasticity through the spring is in order to guarantee the contact of first sealing washer and air flue two-section, or is used for avoiding the utility model discloses rocking of movable piece under the non-use condition of pressure bottle.

Preferably, the outer surface of the sealing cover deviating from the part to be punctured is provided with a pressure relief score; the opening direction of the pressure relief nick is the same as the length extension direction of the bottle body and the opening direction of the bottle body; the pressure relief nicks extend along the circumferential direction of the sealing cover and form an arc shape with unconnected heads and tails.

Set up the pressure release nick on sealed covering, and need not open at the bottle, need not set up the nest structure that expands on the bottle, need not carry out the alignment and the welded fastening of rupture disk, can reduction in production cost to reduce the welding department, with the sealed effect of further improvement bottle, and improve bottle intensity. Wherein, the pressure release nick is located the bottle and is used for the opening part of giving vent to anger, and the department of giving vent to anger is not keeping away from the bottle in the setting, and the blasting pressure release effect is better. Wherein, the opening orientation of pressure release nick is the same with bottle length extending direction and bottle opening direction, enables the pressure release effect better, enables processing more convenient, can avoid sealed lid edge to go out to compress tightly and lead to the pressure release nick to warp or split. Wherein, the pressure release nick is the arc, can increase the pressure release region, improves the pressure release effect.

Preferably, the outer surface of the part to be pierced is provided with breaking nicks corresponding to the outlet end of the gas outlet channel, the breaking nicks are in a radial structure extending to the periphery by taking the axis of the gas outlet channel as the center, and the depth of the breaking nicks is at least half of the thickness of the part to be pierced. Above-mentioned setting is so that the sealed lid is difficult for being plugged up after being opened by drilling, in order to further avoid the utility model discloses a pressure bottle is by secondary use.

Preferably, the bottle body is provided with a bottle mouth part near the opening, the bottle mouth part comprises a first annular bottle mouth part and a second annular bottle mouth part from outside to inside, the first annular bottle mouth part and the second annular bottle mouth part both form a conical structure with the opening facing the inner side of the bottle body, and the conical taper angle formed by the second annular bottle mouth part is larger than the conical taper angle formed by the first annular bottle mouth part; the bottle comprises a bottle body, a first annular bottleneck portion, a second annular bottleneck portion, a spherical surface-shaped structure and a smooth transition section, wherein the smooth transition section is of a conical structure, the bottleneck portion is close to the bottle body, and the first annular bottleneck portion is far away from the second annular bottleneck portion and is smoothly connected with the bottle body at the bottleneck portion close to the bottle body.

The utility model discloses the bottleneck portion of bottle opening part has first annular bottleneck portion and second annular bottleneck portion, and the toper angle that first annular bottleneck portion constitutes is different with the toper angle that second annular bottleneck portion constitutes, constitutes additional strengthening, enables bottleneck portion and can bear bigger radial hole and axial force to avoid bottleneck portion and valve body or other parts's junction impaired. Wherein, first annular bottleneck portion and second annular bottleneck portion can improve the surface smoothness, can reach the sealed requirement of process. Wherein, first annular bottleneck portion and second annular bottleneck portion can the punching press obtain, can process the bottleneck portion through the mode of cold work sclerosis to further increase bottleneck portion intensity, in order to avoid the bottleneck to split, so that the utility model discloses pressure bottle can fill more contents, or fill under the condition that the content volume is the same, so that the pressure bottle size can be done littleer.

Preferably, the sealing cover is provided with a first sleeve part extending into the accommodating cavity, the outer end of the first sleeve part is provided with a fixing part, an outer bulge extending towards the outer side of the periphery is arranged at the position of the first sleeve part deviating from the outer end, and the outer bulge is abutted against the inner wall of the bottle body; the contact position of the inner wall of the bottle body and the outer bulge is obliquely arranged relative to the opening direction of the bottle body, and the outer bulge is provided with an inclined plane which is contacted with the inner wall of the bottle body. The first sleeve part is applied with force, so that the first sleeve part forms an outer bulge protruding towards the circumferential outer side, the outer bulge is abutted against the inner wall of the bottle body, and the fixing effect between the sealing cover and the bottle body of the pressure bottle is ensured. Wherein, the inner wall of the bottle body forms an inclined plane instead of a plane, which is convenient for the tensioning and fixing between the sealing cover and the bottle body.

Preferably, the outer protrusion is annularly arranged around the first sleeve part; the bottle body opening part is formed with a flanging structure, the peripheral edge of the sealing cover is provided with a fixing part which turns outwards to wrap the flanging structure, and a groove-shaped structure formed by the fixing part and the flanging structure are sealed through a second sealing ring. Through flanging structure and fixed part cooperation, in addition the second sealing washer, can improve the whole leakproofness of pressure bottle to make the pressure bottle can fill the content that the internal pressure is higher. The outer protrusion is annularly arranged so that the outer protrusion has a conical surface contacting the inner wall of the bottle body.

Preferably, the circumferential edge of the part to be punctured of the sealing cover extends towards the inner side of the accommodating cavity to form a second sleeve part, the air outlet block extends into the second sleeve part and is fixed, a positioning groove is formed in the position, deviating from the part to be punctured, of the circumferential outer wall of the air outlet block, the second sleeve part is provided with an inner protrusion extending towards the inner side in the circumferential direction, and the inner protrusion extends into the positioning groove. Wherein, the air outlet block and the second sleeve part can be fastened together in a pressing way. Wherein, through setting up constant head tank and interior arch to improve the fixed effect between gas piece and sealed lid, and can avoid taking off between gas piece and sealed lid and drop to holding the chamber bottom after taking off.

Preferably, a third sealing ring is arranged between one end of the air outlet block, which is close to the part to be punctured, and the second sleeve part, one end of the air outlet block, which is close to the part to be punctured, forms a conical structure, the third sealing ring is sleeved outside the conical structure of the air outlet block, the arc at the joint of the second sleeve part and the part to be punctured is excessive and forms an arc surface structure, and the third sealing ring is in contact with the arc surface structure; the locating slot winds the air outlet block for a circle to be annular, and the inner bulge winds the second sleeve part for a circle to be annular.

Wherein, through setting up the third sealing washer to realize the sealed between gas piece and sealed lid, in order to avoid during secondary filling time gaseous gap between following gas piece and the sealed lid to get into the chamber that holds of pressure bottle. The end part of the air outlet block is arranged in a conical shape, so that the third sealing ring can be more attached to the air outlet block; and set up cambered surface structure with second cover portion and the department of treating the portion junction of impaling to make the third sealing washer can more laminate sealed lid, with further guarantee sealed effect. Wherein, interior arch and constant head tank all are the annular setting, even if be convenient for assembly and processing, also further improve sealed lid and give vent to anger the fixed effect between the piece.

The utility model has the advantages of simple structure, leakproofness are better, enable the volume and do littleer, just the utility model discloses the non-repeated dress that fills effect is better still has.

Drawings

FIG. 1 is a schematic view of a structure of an opening of a bottle body of a pressure bottle according to the present invention;

FIG. 2 is a schematic view of a structure of the mouth of the pressure bottle of the present invention;

fig. 3 is a schematic structural view of the air outlet block of the present invention when it is engaged with the moving member;

fig. 4 is a schematic structural view of the air outlet block of the present invention;

fig. 5 is a schematic structural view of the sealing cover of the present invention;

FIG. 6 is an enlarged schematic view of FIG. 1 at the portion to be pierced;

FIG. 7 is a schematic view of the seal cover of the present invention in an open configuration;

fig. 8 is an enlarged schematic view of fig. 7 at the portion to be pierced.

Detailed Description

The invention will be further described with reference to the drawings and the specific embodiments.

Referring to fig. 1 and 2, a non-refillable pressure bottle of the present invention comprises a bottle body 100, an opening 101 is formed at the upper end of the bottle body 100, a sealing cap 1 for sealing the opening 101 is disposed at the opening 101 of the bottle body 100, the sealing cap 1 and the bottle body 100 form a closed accommodating chamber, the circumferential edge of the sealing cap 1 is tightly fixed and sealed with the bottle body 100, a portion to be punctured 11 is formed at the middle of the sealing cap 1, and treat that portion 11 and play gas piece 2 upper end are connected fixedly and sealing process, it is located and holds the intracavity to give vent to anger piece 2, it has the air outlet channel who runs through both ends from top to bottom to give vent to anger piece 2, give vent to anger the passageway upper end and for giving vent to anger the end and treat portion 11 towards, treat that portion 11 seals the air outlet channel and give vent to anger the end, be equipped with moving part 3 in the air outlet channel, moving part 3 moves down along air outlet channel in order to cut off air outlet channel, moving part 3 moves up along air outlet channel so that air outlet channel link up. Wherein, the lower extreme of the piece of giving vent to anger 2 and gas phase pipe 9 welded fastening, and gas phase pipe 9 lower extreme passes through the elastic component (not drawn in the figure) and supports in holding the chamber bottom.

The opening of the bottle body 101 is formed with a flanging structure 102 which turns on one side outwards, the bottle body 101 is close to the opening and is provided with a bottle mouth part 103, the bottle mouth part 103 comprises a first annular bottle mouth part 104 and a second annular bottle mouth part 105 from outside to inside, the first annular bottle mouth part 104 and the second annular bottle mouth part 105 both form a conical structure with an opening facing the containing cavity, the first annular bottle mouth part 104 and the second annular bottle mouth part 105 extend from top to bottom gradually to the outer side in the circumferential direction, and the conical taper angle formed by the second annular bottle mouth part 105 is larger than that formed by the first annular bottle mouth part 104. A smooth transition section 106 in a conical structure is formed between the first annular bottleneck portion 104 and the second annular bottleneck portion 105, the bottle body 100 is in a spherical structure at the position close to the bottleneck portion 103, and the position of the first annular bottleneck portion 104 far away from the second annular bottleneck portion 105 is smoothly connected with the position of the bottle body 100 close to the bottleneck portion.

As shown in fig. 1, 5, 6, 7 and 8, the peripheral edge of the portion to be pierced 11 of the sealing cap 1 extends (extends downward) toward the inside of the receiving cavity to form a second sleeve portion 12, the upper end of the air outlet block 2 is fixed in the second sleeve portion 12, and the lower end of the second sleeve portion 12 extends toward the outside in the peripheral direction to form an annular connecting portion 13. The sealing cover 1 is provided with a first sleeve part 14 extending towards the inner side of the accommodating cavity, the lower end of the first sleeve part 14 is connected with the circumferential outer edge of the connecting part 13, the outer end of the first sleeve part 14 is provided with a fixing part 141, the fixing part 141 forms an annular groove-shaped structure and wraps the flanging structure 102, and the groove-shaped structure formed by the fixing part 141 and the flanging structure 102 are sealed through a second sealing ring 109. Wherein the second sleeve portion 12 is formed with an external thread structure on a circumferential outer surface thereof to facilitate screwing with a drilling tool.

The outer surface of the sealing cover 1 deviates from the part to be pierced and is provided with a pressure relief nick 15, the pressure relief nick 15 is arranged on the upper surface of the connecting part 13, the opening direction of the pressure relief nick 15 is the same as the length extending direction of the bottle body 100 and the opening direction of the bottle body 100, and the pressure relief nick 15 extends along the circumferential direction of the connecting part 13 and forms an arc shape with no connection from head to tail.

The outer surface of the part to be pierced 11 of the sealing cover 1 is provided with breaking nicks 16 corresponding to the outlet end of the air outlet channel, a plurality of breaking nicks 16 are in a radial structure extending to the periphery by taking the axis of the air outlet channel as the center, and the depth of the breaking nicks 16 is at least half of the thickness of the part to be pierced 11.

The first sleeve portion 14 has an outer protrusion 142 extending outward from the outer end (upper end) thereof, the outer protrusion 142 abuts against the inner wall of the second annular mouth portion 105 of the bottle body 100, and the outer protrusion 142 is annularly disposed around the first sleeve portion and has a tapered surface contacting the inner wall of the second annular mouth portion 105. The outer wall of the circumferential direction of the gas outlet block 2 deviates from the part 11 to be pierced and is provided with a positioning groove 20, the second sleeve part 12 is provided with an inner protrusion 121 extending towards the inner side of the circumferential direction, the inner protrusion 121 extends into the positioning groove 20, the positioning groove 20 surrounds the gas outlet block 2 for a circle to be annular, and the inner protrusion 121 surrounds the second sleeve part 12 for a circle to be annular.

A third sealing ring 29 is sleeved between the upper end of the air outlet block 2 and the second sleeve part 12, a conical structure 28 with the outer diameter gradually increasing from top to bottom is formed at the upper end of the air outlet block 2, the third sealing ring 29 is sleeved outside the conical structure 28 of the air outlet block, the arc transition of the joint of the second sleeve part 12 and the part 11 to be punctured is formed, an arc surface structure 19 is formed, and the third sealing ring 29 is in contact with the arc surface structure 19.

As shown in fig. 1, 3, 4, and 5, the outlet channel includes a first air channel segment 21 near the outlet end of the outlet channel and a second air channel segment 22 near the inlet end of the outlet channel, and the first air channel segment 21 is located above the second air channel segment 22 and is communicated with the second air channel segment 22. The moving element 3 comprises a moving element section 31 and a moving element section 32 which is positioned below the moving element section 31, the outer diameter of the moving element section 31 is larger than the inner diameter of the air passage section 22 and is always positioned in the air passage section 21, and the outer diameter of the moving element section 32 is smaller than the inner diameter of the air passage section 22 and extends into the air passage section 22. The moving piece is in clearance fit with the air outlet channel, four passing grooves are formed in the outer wall of the moving piece, the four passing grooves are annularly and uniformly arranged at intervals by taking the axis of the moving piece as the center, and the passing grooves comprise a first passing groove 311 formed in one section 31 of the moving piece and a second passing groove 321 formed in two sections 32 of the moving piece.

The first sealing ring 33 is sleeved on the position, close to the second moving piece section 32, of the first moving piece section 31, the first sealing ring 33 is used for sealing between the moving piece 3 and the second moving piece section 22, a first passing groove 311 for passing contents of a pressure bottle is formed in the outer wall of the first moving piece section 31, the first passing groove 311 penetrates through the upper end and the lower end of the first moving piece section 31, the end part, close to the first sealing ring 33, of the first passing groove 311 is relatively located on the circumferential outer side of the first sealing ring 33 (the outer diameter of the first sealing ring 33 is smaller than that of the first moving piece section 31), and the distance between the portion to be punctured 11 and the second moving piece section 22 is larger than the length of the first moving piece section 31.

Wherein, the opening part of the upper end of the air flue two-section 22 is an open structure 221, the first sealing ring 23 is provided with a sealing surface which is used for contacting with the open structure 221 of the air flue two-section 22, and the sealing surface gradually extends towards the circumferential inner side from top to bottom. Wherein, the outer wall of the first segment 31 of the moving part is in clearance fit with the inner wall of the first segment 21 of the air passage, and the outer wall of the second segment 32 of the moving part is provided with a second through groove 321.

The utility model has the advantages of simple structure, leakproofness are better, enable the volume and do littleer, just the utility model discloses the non-repeated dress that fills effect is better still has.

Claims (10)

1. The utility model provides a non-repeated filling dress pressure bottle, its characterized in that includes the bottle, the bottle has the opening and constitutes and to have and hold the chamber, the bottle opening part is equipped with sealed lid, sealed lid rises with the bottle and rises to be fixed and sealed, sealed lid middle part has treats the portion of impaling and is connected with the piece of giving vent to anger, the piece of giving vent to anger is located hold the intracavity, the piece of giving vent to anger has the outlet channel who runs through both ends, outlet channel one end is for giving vent to anger the end and the orientation treat the portion of impaling, treat that the portion of impaling seals outlet channel gives vent to anger the end, just be equipped with the moving part in the outlet channel, the moving part moves in order to cut off outlet channel inlet end side along outlet channel, the moving part moves in order to make outlet channel link up along outlet channel outlet end side.

2. The non-refillable pressure bottle of claim 1, wherein the outlet passageway comprises a first segment of the gas passageway adjacent to the outlet end of the outlet passageway and a second segment of the gas passageway adjacent to the inlet end of the outlet passageway, the first segment of the gas passageway is in communication with the second segment of the gas passageway, the movable member comprises a first segment of the movable member and a second segment of the movable member, the outer diameter of the first segment of the movable member is greater than the inner diameter of the second segment of the gas passageway and is always located within the first segment of the gas passageway, and the outer diameter of the second segment of the movable member is less than the inner diameter of the second segment of the gas passageway and extends into the second segment of the gas passageway.

3. The non-refillable pressure bottle of claim 2, wherein a first sealing ring is sleeved on a section of the movable member adjacent to two sections of the movable member, the first sealing ring is used for sealing between the movable member and two sections of the air passage, a first passing groove for passing contents in the pressure bottle is arranged on a section of the movable member, the first passing groove penetrates through two opposite ends of the section of the movable member, the end part of the first passing groove adjacent to the first sealing ring is wholly or partially positioned on the circumferential outer side of the first sealing ring, and the distance between the part to be punctured and the two sections of the air passage is greater than the length of the section of the movable member;

the second air passage section is close to one section of opening of air passage and is open shape structure, first sealing washer has the sealed face that is used for the open shape structure contact with the second air passage section, sealed face is given vent to anger end to the air inlet end of air outlet channel and is extended to circumference inboard gradually by air outlet channel.

4. A non-refillable pressure bottle as claimed in claim 1 wherein the closure has a pressure relief score on its outer surface offset from the intended piercing location; the opening direction of the pressure relief nick is the same as the length extension direction of the bottle body and the opening direction of the bottle body; the pressure relief nicks extend along the circumferential direction of the sealing cover and form an arc shape with unconnected heads and tails.

5. The non-refillable pressure bottle of claim 1 wherein the outer surface of the portion to be pierced has a plurality of rupture scores at the outlet end of the vent passageway, the rupture scores being in the form of radial structures extending around the axis of the vent passageway, the rupture scores being at least half the thickness of the portion to be pierced.

6. A non-refillable pressure bottle according to claim 1 wherein the body has a mouth portion adjacent the opening, the mouth portion comprising from outside to inside a first annular mouth portion and a second annular mouth portion, the first annular mouth portion and the second annular mouth portion each defining a tapered configuration with the opening facing the inside of the body, the second annular mouth portion defining a tapered cone angle that is greater than the tapered cone angle defined by the first annular mouth portion;

the bottle comprises a bottle body, a first annular bottleneck portion, a second annular bottleneck portion, a spherical surface-shaped structure and a smooth transition section, wherein the smooth transition section is of a conical structure, the bottleneck portion is close to the bottle body, and the first annular bottleneck portion is far away from the second annular bottleneck portion and is smoothly connected with the bottle body at the bottleneck portion close to the bottle body.

7. A non-refillable pressure bottle as claimed in claim 1 wherein the closure has a first sleeve portion extending into the receiving chamber, the first sleeve portion having a securing portion at an outer end thereof, the first sleeve portion being offset from the outer end thereof and having an outer projection extending outwardly and circumferentially, the outer projection abutting an inner wall of the body; the contact position of the inner wall of the bottle body and the outer bulge is obliquely arranged relative to the opening direction of the bottle body, and the outer bulge is provided with an inclined plane which is contacted with the inner wall of the bottle body.

8. A non-refillable pressure bottle according to claim 7, wherein the external protrusion is arranged in a ring around the first sleeve;

the bottle body opening part is formed with a flanging structure, the peripheral edge of the sealing cover is provided with a fixing part which turns outwards to wrap the flanging structure, and a groove-shaped structure formed by the fixing part and the flanging structure are sealed through a second sealing ring.

9. A non-refillable pressure bottle as claimed in claim 1 wherein the sealing cap has a peripheral edge of the portion to be punctured extending inwardly of the receiving chamber to define a second sleeve portion into which the gas outlet piece extends and is retained, the peripheral outer wall of the gas outlet piece being provided with a locating groove offset from the portion to be punctured, the second sleeve portion having an inner projection extending inwardly of the periphery, the inner projection extending into the locating groove.

10. The non-refillable pressure bottle of claim 9, wherein a third sealing ring is disposed between the end of the gas outlet block adjacent to the portion to be punctured and the second sleeve portion, the end of the gas outlet block adjacent to the portion to be punctured forms a conical structure, the third sealing ring is sleeved outside the conical structure of the gas outlet block, the joint of the second sleeve portion and the portion to be punctured is in arc transition and forms an arc structure, and the third sealing ring is in contact with the arc structure;

the locating slot winds the air outlet block for a circle to be annular, and the inner bulge winds the second sleeve part for a circle to be annular.

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