CN214190490U - Jar body and storing jar - Google Patents

Abstract

The utility model provides a jar body and storing jar. The tank body comprises a tank opening and a tank body, the tank opening is connected to the tank body and comprises a first port and a second port, the diameter of the first port is smaller than that of the second port, and the second port is connected with the tank body; the first port and the second port are connected through a reducing portion. The storage tank comprises a tank cover and the tank body, wherein the tank cover is connected with the first port of the tank body. The utility model provides the high bearing capacity of jar mouth department of the jar body satisfies various use scenes and the user demand of storing jar.

Description

Jar body and storing jar

Technical Field

The utility model relates to a packaging container technical field especially relates to a jar body and storing jar.

Background

The tin-plated iron storage tank has the advantages of corrosion resistance and rust resistance, is a common device for containing various solid and liquid articles in daily life of people, and relates to the aspect of our life.

Tin-plated iron storing jar is including a jar body and cover, and the cover lid closes on jar body, can avoid jar internal article to leak outward to keep apart the impurity in the air. The jar body comprises jar mouth and jar body, and in daily use, the storing jar is mostly jar mouth towards the mode of placing of top, and this just means that the jar mouth mainly bears the various pressure of storing jar top. At the present stage, the diameter of the mouth of the tin-plated storage tank is equal from top to bottom, and after articles are put into the storage tank, the tank body is sealed by the tank cover.

However, the above-mentioned canister has a low pressure-bearing capacity at the mouth of the canister body, and thus cannot sufficiently satisfy various uses of the tin-plated iron-made canister.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one problem mentioned in the background art, the utility model provides a jar body and storing jar has improved the bearing capacity of jar mouth department of the jar body, satisfies various use scenes and the user demand of storing jar.

In order to achieve the above object, in a first aspect, the present invention provides a tank, including a tank opening and a tank body, the tank opening is connected to the tank body, the tank opening includes a first port and a second port, the diameter of the first port is smaller than the diameter of the second port, and the second port is connected to the tank body. The first port and the second port are connected through a reducing portion.

In the above tank body, optionally, the diameter-changing portion includes at least two diameter-changing sections, two adjacent diameter-changing sections are connected by a connecting section, and a diameter of the diameter-changing section near the first port is smaller than a diameter of the diameter-changing section near the second port.

The outer periphery of the diameter-variable portion is provided with a first connecting end and a second connecting end, the first connecting end is connected with the first port, the second connecting end is connected with the second port, and a first included angle is formed between a connecting line between the first connecting end and the second connecting end and a horizontal plane.

In the tank body, the angle range of the first included angle is optionally 5-15 °.

In the above-described tank, the diameter of the variable diameter portion may be increased gradually in a direction from the first port to the second port.

The outer peripheral surface of the diameter-variable part is an arc surface, and the concave side of the arc surface is positioned on the side departing from the tank body.

The cambered surface curvature radius is a first radius.

In the tank body, the range of the first radius is optionally 8-15 mm.

In the above-described tank, the variable diameter portion and the first port may be connected by a first straight portion.

The variable diameter part is connected with the second port through a second straight body part.

In the tank body, optionally, a first receiving portion is arranged between the first straight portion and the first port, and the diameter of the first receiving portion is equal everywhere along the direction from the first port to the second port.

The diameter of the first bearing part is equal to that of the first port, and the diameter of the first bearing part is smaller than that of the first straight part.

A first chamfer is arranged between the first bearing part and the first straight body part.

In the above tank, optionally, a second receiving portion is disposed between the second straight portion and the second port, and a diameter of the second receiving portion is equal everywhere along a direction from the first port to the second port.

The diameter of the second bearing part is equal to the diameter of one end, away from the first port, of the reducing part, and the diameter of the second bearing part is larger than that of the second straight body part.

A second chamfer is arranged between the second straight body part and the second bearing part.

In the above-described tank body, a connecting portion may be provided between the first port and the first straight portion. Connecting portion include screw thread portion and lock waist portion, are connected through the third chamfer between screw thread portion and the first port, and the angle range of third chamfer is 35 ~ 65.

The number of turns of the thread part is 1.7-3.2.

The lock waist part is connected with the thread part through the thread part chamfer.

The angle range of the chamfer of the thread part is 32-52 degrees.

The utility model provides a jar body, through set up the reducing portion on the position of jar mouth, the reducing portion has stronger bearing capacity to the bearing capacity of jar mouth and jar body has been improved. The variable diameter part is provided with a plurality of variable diameter section combinations or the variable diameter part on the periphery of the cambered surface, so that the variable diameter part can be suitable for various machining processes and can fully meet the use requirement. Through setting up first straight body portion and straight body portion, improved the joint strength between first port and reducing portion and second port and the reducing portion. By providing the first receiving portion or the second receiving portion, the gripping jaw for transferring the can opening can be gripped at the position of the first receiving portion or the second receiving portion in the process of processing and manufacturing the can body, and then the can opening is connected with the can body of the can body. Through setting up connecting portion, be convenient for the repackage of jar mouth.

In a second aspect, the utility model provides a storage tank, including cover and the above-mentioned jar body, the cover is connected with the first port of the jar body.

The utility model provides a storing tank is through setting up above-mentioned jar body to set up the cover and irritate the body coupling with the aforesaid, guarantee that storing tank can play the effect of storing up article. The variable diameter part is provided with a plurality of variable diameter section combinations or the variable diameter part on the periphery of the cambered surface, so that the variable diameter part can be suitable for various machining processes and can fully meet the use requirement. Through setting up first straight body portion and the straight body portion of second, improved the joint strength between first port and reducing portion and second port and the reducing portion to improve the intensity of storing jar, guaranteed the utility model provides a storing jar can be applicable to the demand of various storing.

The structure of the present invention and other objects and advantages thereof will be more clearly understood from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a tank provided in an embodiment of the present invention;

fig. 2 is a front view of a tank provided in the first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a tank opening of a tank body according to an embodiment of the present invention;

fig. 4 is a front view of a tank opening of a tank body according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a tank provided with a connecting portion according to a first embodiment of the present invention;

fig. 6 is a front view of a tank provided with a connecting portion according to a first embodiment of the present invention;

fig. 7 is a schematic structural diagram of a tank opening of a tank body provided with a connecting portion according to a first embodiment of the present invention;

FIG. 8 is a front view of a tank opening of a tank body provided with a connecting portion according to a first embodiment of the present invention;

fig. 9 is a schematic structural view of a tank opening of a tank body according to a second embodiment of the present invention;

fig. 10 is a front view of a tank opening of a tank body according to a second embodiment of the present invention;

fig. 11 is a schematic structural view of a tank opening of a tank body provided with a connecting portion according to a second embodiment of the present invention;

fig. 12 is a front view of a tank opening of a tank body provided with a connecting portion according to a second embodiment of the present invention.

Description of reference numerals:

100-can mouth;

110 — a first port;

111-eversion;

120-a second port;

130-a diameter-variable part;

140-a first straight body portion;

150-a second straight body portion;

160-a first bay;

170-a connecting part;

171-a threaded portion;

172-lock waist;

173-third chamfer;

174-thread chamfer;

180-first chamfer;

200-can body.

Detailed Description

Tin-plated iron storing jar is including a jar body and cover, and the cover lid closes on jar body, can avoid jar internal article to leak outward to keep apart the impurity in the air. The tank body consists of a tank opening and a tank body, wherein one side of the tank opening close to the tank body is provided with a double-layer seaming, and the tank opening is tightly connected with the tank body. In daily use, the storage tank is mostly placed in a way that the tank opening faces upwards, which means that the tank opening mainly bears various pressures above the storage tank. At the present stage, the diameter of the mouth of the tin-plated storage tank is equal from top to bottom, and after articles are put into the storage tank, the tank body is sealed by the tank cover. The pot mouth of the storing jar that sets up like this has low pressure-bearing capacity, and jar body top should not set up the great article of gravity, has injectd tin iron storing jar's application scene.

In view of this, the utility model provides a jar body and storing jar through set up the reducing portion between the first port of jar mouth and the second port at the jar body to the bearing capacity of jar mouth and jar body has been improved. The variable diameter part is provided with a plurality of variable diameter section combinations or the variable diameter part on the periphery of the cambered surface, so that the variable diameter part can be suitable for various machining processes and can fully meet the use requirement. Through setting up first straight body portion and straight body portion, improved the joint strength between first port and reducing portion and second port and the reducing portion. By providing the first receiving portion or the second receiving portion, the gripping jaw for transferring the can opening can be gripped at the position of the first receiving portion or the second receiving portion in the process of processing and manufacturing the can body, and then the can opening is connected with the can body of the can body. Through setting up connecting portion, be convenient for the repackage of jar mouth. The embodiment of the utility model provides a storing jar includes above-mentioned jar body, has improved the bulk strength of storing jar, has expanded the applied scene of storing jar.

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example one

Fig. 1 is the structural schematic diagram of the tank body provided by the embodiment of the present invention, fig. 2 is the main view of the tank body provided by the embodiment of the present invention, fig. 3 is the structural schematic diagram of the tank opening of the tank body provided by the embodiment of the present invention, fig. 4 is the main view of the tank opening of the tank body provided by the embodiment of the present invention, fig. 5 is the structural schematic diagram of the tank body provided with the connecting portion provided by the embodiment of the present invention, fig. 6 is the main view of the tank body provided with the connecting portion provided by the embodiment of the present invention, fig. 7 is the structural schematic diagram of the tank opening of the tank body provided with the connecting portion provided by the embodiment of the present invention, fig. 8 is the main view of the tank opening of the tank body provided with the connecting portion provided by the embodiment of the present invention.

Referring to fig. 1 to 8, in order to achieve the above object, a first embodiment of the present invention provides a can body, including a can opening 100 and a can body 200, the can opening 100 is connected to the can body 200, the can opening 100 includes a first port 110 and a second port 120, a diameter of the first port 110 is smaller than a diameter of the second port 120, and the second port 120 is connected to the can body 200. The first port 110 and the second port 120 are connected by a diameter-variable portion 130. The variable diameter portion 130 plays a role in connecting the first port 110 with the second port 120, the length of the tank opening 100 in the direction from the tank opening 100 to the tank body 200 is increased, the pressure bearing capacity of the tank opening 100 is improved, the pressure above the tank opening 100 is prevented from being directly applied to articles in the tank body, and the protection of the articles is facilitated. The diameter-variable portion 130 is provided to improve the pressure-bearing capacity of the tank, for example, when the pressure from the outside is directed to the tank opening 100 from the plane perpendicular to the first port 110, the pressure can be borne on the periphery of the diameter-variable portion 130 and on the plane perpendicular to the first port, so as to improve the pressure-bearing capacity of the tank opening 100.

It should be noted that, in the first tank body provided in the embodiment of the present invention, when the first port 110 of the tank opening 100 is provided with the outward turning portion 111, the outward turning direction of the outward turning portion 111 is away from the tank body, and the outward turning radius of the outward turning portion 11 is 1.0-1.8 mm, such arrangement is favorable for ensuring the compressive strength of the first port. The preferred 25 ~ 40mm of external diameter of first port 110, such setting can be when guaranteeing the canned speed of article the be convenient for jar mouth 100 sealed, and when the external diameter of first port 110 was too little, the speed of injecting article in the jar body is less, influences the canned speed of object, and when the external diameter of first port 110 was too big, the opening of the jar body was great, and the area of contact between the sealed face between jar mouth 100 and the cover is great to the sealed degree of difficulty of jar body has been improved.

The embodiment of the utility model provides a jar body can be for tin plate material, and the second port 120 of jar mouth 100 sets up double seaming, and such setting can ensure second port 120 and tin plate iron can body 200 zonulae occludens, and for dismantling the connection, has better feel, can be applicable to the can body 200 of multiple shape.

In an implementation manner, the variable diameter portion 130 includes at least two variable diameter sections, two adjacent variable diameter sections are connected by a connecting section, and a diameter of the variable diameter section near the first port 110 is smaller than a diameter of the variable diameter section near the second port 120. The variable diameter portion 130 has a first connection end 131 and a second connection end 132 on the outer circumference, the first connection end 131 is connected with the first port 110, the second connection end 132 is connected with the second port 120, and a first included angle α is formed between a horizontal plane and a connection line between the first connection end 131 and the second connection end 132. At this time, when the pressure perpendicular to the plane of the first port 110 is directed toward the diameter-variable portion 130, the force applied to the diameter-variable portion 130 is distributed along the peripheral wall of the diameter-variable portion 130 and in the direction perpendicular to the peripheral wall, so that the diameter-variable portion 130 has a high pressure-receiving capacity, that is, the tank opening 100 has a large pressure-receiving capacity, thereby improving the pressure-receiving degree of the tank body.

Referring to fig. 4 and 8, further, the first included angle α is in the range of 5 to 15 °. Due to the arrangement, the diameter-variable part 130 has good pressure-bearing capacity and good deformation resistance. When the angle of the first included angle α is smaller than 5 °, the stress on the peripheral wall of the diameter-variable portion 130 is small, and the increase of the pressure-bearing capacity of the can opening 100 is limited; when the angle of the first included angle α is greater than 15 °, the stress on the peripheral wall of the diameter-variable portion 130 is large, so that the diameter-variable portion 130 is easily deformed, and the stability of the can opening 100 is reduced. Preferably, the value of the first included angle α is preferably 7 °, and the first included angle may be designed to be different angles according to different requirements in specific applications, which is not limited in the embodiment of the present invention.

In an implementation, the variable diameter portion 130 is connected to the first port 110 through a first straight portion 140. The diameter-variable portion 130 and the second port 120 are connected by a second straight portion 150. By providing the first straight part 140 and the second straight part 150, the connection stability between the first port 110 and the variable diameter part 130, and between the variable diameter part 130 and the second port 120 can be improved. Preferably, the diameters of the first straight part 140 and the second straight part 150 are gradually increased along the direction from the first port 110 to the second port 120, and the ratio of the length of the increased diameter to the length of the movement along the direction is a fixed constant. The largest diameter of the first straight part 140 should be smaller than or equal to the diameter of the diameter-changing part 130 on the side close to the first port 110, and the smallest diameter of the second straight part 150 should be larger than or equal to the diameter of the diameter-changing part 130 on the side close to the second port, so that the arrangement is convenient for stacking after the processing of the tank opening 100 is completed.

Referring to fig. 4, as an embodiment that can be realized, a first bellmouth 160 is provided between the first straight part 140 and the first port 110, and the diameter of the first bellmouth 150 is equal everywhere along the direction from the first port 110 to the second port 120. The diameter of the first bay 150 is equal to the diameter of the first port 110, and the diameter of the first bay 160 is smaller than the diameter of the first straight section 160. A first chamfer 180 is disposed between the first receiving portion 160 and the first straight portion 110.

The first receiving portion 160 functions as a connection with the transfer jaw of the can mouth 100, and this arrangement improves the processing efficiency of the can mouth 100. The first chamfer 180 is arranged between the first bearing part 160 and the first straight part 110, so that the smoothness of the peripheral wall of the can opening 100 is improved, and the peripheral wall is prevented from being worn. It should be noted that the diameter of the first receiving portion 160 is preferably equal to the diameter of the first port 110, or slightly larger than the diameter of the first port 110, but smaller than the minimum diameter of the first straight portion 140, so as to avoid affecting the stacking between the finished cans 100.

As another realizable embodiment thereof, a second bellmouth is provided between the second straight portion 150 and the second port 120, the diameter of the second bellmouth being equal everywhere along the direction from the first port 110 to the second port 120. The diameter of the second receiving portion is equal to the diameter of the end of the reducing portion 130 away from the first port 110, and the diameter of the second receiving portion is larger than the diameter of the second straight portion 150. A second chamfer is arranged between the second straight part 150 and the second bearing part. When the second receiving portion is provided on the can mouth 100, the transfer jaw is connected to the second receiving portion, and the position where the force of the transfer jaw is applied is close to the second port 120, which facilitates the connection between the can mouth 100 and the can body 200.

Further, a connection portion 170 is disposed between the first port 110 and the first straight portion 140. Through setting up connecting portion, the embodiment of the utility model provides a jar body joinable is provided with threaded connection's cover and mutually supports, and the user can open or the closed jar body many times at the in-process that uses. The connecting portion 170 comprises a threaded portion 171 and a lock waist portion 172, the threaded portion 171 is connected with the first port 110 through a third chamfer 173, the angle range of the third chamfer 173 is 35-65 degrees, wherein the threaded portion plays a role in connection with a tank cover, the lock waist portion is connected with a lock waist ring, and the tank cover is connected with the lock waist ring before the tank cover is opened for the first time. The range of the number of turns of the threads of the thread portion 171 is 1.7-3.2, the number of turns of the threads can meet the locking requirement of the tank cover, and meanwhile, the length of the thread portion 171 and the length of the connecting portion 170 in the direction from the first port 110 to the second port 120 are within a reliable range, and the problem that the stability and the pressure bearing capacity of the tank opening are affected due to the fact that the length of the connecting portion 170 is too large is avoided. The waist portion 172 is connected to the threaded portion 171 by a threaded chamfer 174. The angle range of the threaded part chamfer 174 is 32-52 degrees, and the arrangement can ensure that the waist locking ring can be completely arranged on the waist locking part 172, so that the tight connection between the tank cover and the waist locking ring is realized.

Example two

Fig. 9 is a schematic structural diagram of a tank opening of a tank body provided by the second embodiment of the present invention, fig. 10 is a front view of the tank opening of the tank body provided by the second embodiment of the present invention, fig. 11 is a schematic structural diagram of the tank opening of the tank body provided with a connecting portion provided by the second embodiment of the present invention, and fig. 12 is a front view of the tank opening of the tank body provided with a connecting portion provided by the second embodiment of the present invention.

Referring to fig. 9 to 12, on the basis of the first embodiment, a second embodiment of the present invention provides a can body, and compared with the first embodiment, the second embodiment of the present invention has the following differences: the structure of the diameter-variable portion 130 is different.

Specifically, the diameter of the variable diameter portion 130 gradually increases in a direction from the first port 110 to the second port 120. The outer peripheral surface of the diameter-variable portion 130 is an arc surface, and the concave side of the arc surface is located on the side away from the can body. Referring to fig. 10 and 12, the arc curvature radius r is a first radius. When the pressure in the direction perpendicular to the first port 110 is applied to the variable diameter portion, the force applied to the variable diameter portion 130 is distributed along the peripheral wall of the variable diameter portion 130 and the direction perpendicular to the peripheral wall, and the forces in both directions are smaller than the pressure from the first port 110, so that the variable diameter portion 130 has a high pressure-bearing capacity under the same applied force, that is, the tank opening 100 has a high pressure-bearing capacity, thereby improving the pressure-bearing degree of the tank body.

The area of the periphery of the diameter-variable portion 130 along the direction from the first port 110 to the second port 120 is gradually increased, at this time, the force applied to the diameter-variable portion 130 along the direction from the first port 110 to the second port 120 along the direction perpendicular to the peripheral wall is not equal everywhere and gradually increases, and the force applied to the peripheral wall of the diameter-variable portion 130 along the direction perpendicular to the peripheral wall is substantially constant, so that the uniformity of the force applied to the peripheral wall of the diameter-variable portion 130 per unit area can be ensured, and the service life of the tank opening 100 can be ensured.

Further, the range of the first radius is 8-15 mm, the arrangement can ensure that the diameter varying portion 130 has good pressure bearing capacity and good stability, when the value of the first radius is larger than 15mm, the stress on the peripheral wall of the diameter varying portion 130 is small, the increase of the pressure bearing capacity of the tank opening 100 is limited, when the value of the first radius is smaller than 8mm, the angle of the circumferential angle of the arc surface on the peripheral wall of the diameter varying portion 130 is large, and opposite forces are easily generated on the peripheral wall of the side, close to the first port 110, of the diameter varying portion 130 and the peripheral wall of the side, far away from the first port 110, so that the diameter varying portion 130 is squeezed, and the stability of the tank opening 100 is affected. In practical use, the user may adjust the specific value of the first radius within the above range as needed, and the specific value is not limited in this embodiment.

Other technical features are the same as those of the first embodiment and can achieve the same technical effects, and are not described in detail herein.

EXAMPLE III

On the basis of the first embodiment and the second embodiment, the third embodiment of the present invention provides a storage tank, which includes a tank cover and the tank body, wherein the tank cover is connected to the first port 110 of the tank body.

The embodiment of the utility model provides a three storage tanks is through setting up above-mentioned jar body to set up the cover and irritate the body coupling with the aforesaid, guarantee that storage tanks can play the effect of storing up article. The diameter-variable part 130 is provided with a plurality of diameter-variable section combinations or diameter-variable parts on the periphery of the cambered surface, so that the method can be suitable for various machining processes, and can fully meet the use requirements. Through setting up first straight body portion 140 and second straight body portion 150, improved the joint strength between first port 110 and reducing portion 130 and second port 120 and the reducing portion 130 to improve the intensity of storing jar, guaranteed the utility model discloses the demand that the storing jar that embodiment three provided can be applicable to various storing.

The storage tank can be used for storing liquid or solid, and when the substance in the storage tank is solid, the solid can be in a powder form or a block form. Of course, the storage tank can also be used for containing gas, at this time, a sealing ring needs to be arranged between the second port 120 and the tank body 200, and the tank cover and the tank body are tightly closed. In summary, the present embodiment does not limit the application of the canister.

In the description of the present invention, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection through an intermediary, a connection between two elements, or an interactive relationship between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. The terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A tank body is characterized by comprising a tank opening and a tank body, wherein the tank opening is connected to the tank body and comprises a first port and a second port, the diameter of the first port is smaller than that of the second port, and the second port is connected with the tank body;

the first port and the second port are connected through a reducing portion.

2. The can according to claim 1, wherein the variable diameter portion comprises at least two variable diameter sections, adjacent two variable diameter sections are connected by a connecting section, and the diameter of the variable diameter section on the side close to the first port is smaller than that of the variable diameter section on the side close to the second port;

the outer periphery of the diameter-variable portion is provided with a first connecting end and a second connecting end, the first connecting end is connected with the first port, the second connecting end is connected with the second port, and a connecting line between the first connecting end and the second connecting end forms a first included angle with a horizontal plane.

3. The can body of claim 2, wherein said first included angle is in the range of 5 to 15 °.

4. The can according to claim 1, wherein a diameter of the variable diameter portion gradually increases in a direction from the first port to the second port;

the outer peripheral surface of the variable-diameter part is an arc surface, and the concave side of the arc surface is positioned on the side away from the tank body;

the cambered surface curvature radius is a first radius.

5. The can body of claim 4, wherein said first radius is in the range of 8-15 mm.

6. The can according to any one of claims 1 to 5, wherein the variable diameter portion is connected to the first port by a first straight portion;

the variable diameter part is connected with the second port through a second straight body part.

7. The can body of claim 6, wherein a first bolster is disposed between said first straight section and said first port, said first bolster having a diameter that is equal everywhere along a direction from said first port to said second port;

the diameter of the first bearing part is equal to that of the first port, and the diameter of the first bearing part is smaller than that of the first straight part;

a first chamfer is arranged between the first bearing part and the first straight body part.

8. The can body of claim 6, wherein a second bolster is disposed between said second straight section and said second port, said second bolster having a diameter that is equal everywhere along a direction from said first port to said second port;

the diameter of the second bearing part is equal to that of one end, far away from the first port, of the reducing part, and the diameter of the second bearing part is larger than that of the second straight part;

and a second chamfer is arranged between the second straight body part and the second bearing part.

9. The can body of claim 6, wherein a connection is provided between the first port and the first straight portion;

the connecting part comprises a threaded part and a lock waist part, the threaded part is connected with the first port through a third chamfer, and the angle range of the third chamfer is 35-65 degrees;

the number of turns of the thread part ranges from 1.7 to 3.2;

the lock waist part is connected with the threaded part through a threaded part chamfer;

the angle range of the chamfer angle of the thread part is 32-52 degrees.

10. A canister, comprising a canister lid and a canister body as claimed in any one of claims 1 to 9, the canister lid being connected to the first port of the canister body.

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