Pressure vessel with inner bag

Abstract

The utility model relates to pressure vessel technical field, especially in a kind of pressure vessel with inner bag, including pressure vessel, aluminium film inner bag and bucket cover module, the aluminium film inner bag is set in the inside of pressure vessel, the bucket cover module is used to seal the top of pressure vessel and aluminium film inner bag;The bucket cover module includes the first sleeve, the second sleeve, the first circular plate, the second circular plate, reset spring and sealing ring, and the axis is vertically set;Multiple upper and lower through semicircular air slots that are axially equidistantly arranged on the inner wall of the first sleeve, can press the gas outside into the space between the inside of pressure vessel and the outside of aluminium film inner bag, increase pressure, can extrude the wine in aluminium film inner bag, reduce pressure can absorb the wine outside into aluminium film inner bag inside.

Description

Technical Field

[0001] This utility model relates to the field of pressure-resistant container technology, and in particular to a pressure-bearing barrel with an inner bag. Background Technology

[0002] With the improvement of living standards, people have higher requirements for alcoholic beverages. Canned and bottled beer is no longer sufficient to meet people's drinking needs. More and more people prefer to drink fresh, hygienic, delicious, and pure beer. A beer keg is a tool used to hold beverages. Generally, a beer keg has a spout at the mouth, which works in conjunction with a dispenser to force the beer out of the keg. Traditionally, to expel the beer from the keg, the air inlet is connected to a carbon dioxide tank. When the dispenser is opened, the high-pressure gas in the carbon dioxide tank flows through the dispenser into the keg, creating high pressure inside the keg. Under this high pressure, the beer flows out through the dispenser's outlet. This type of keg requires an external carbon dioxide tank; therefore, if a matching carbon dioxide tank is not available on site, the keg cannot be used properly. Utility Model Content

[0003] The purpose of this invention is to provide a pressure tank with an inner bag to solve the problems existing in the prior art.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A pressure-bearing barrel with an inner bag includes a pressure-resistant barrel, an aluminum foil inner bag, and a barrel lid module. The aluminum foil inner bag is disposed inside the pressure-resistant barrel, and the barrel lid module is used to seal the top of the pressure-resistant barrel and the aluminum foil inner bag. The barrel lid module includes a first sleeve, a second sleeve, a first circular plate, a second circular plate, a return spring, and a sealing ring, all with their axes vertically aligned. The first sleeve is fitted inside the top of the pressure-resistant barrel, and the second sleeve is fixedly installed inside the first sleeve, with the outer wall of the second sleeve fitting against the inner wall of the first sleeve. The inner wall of the first sleeve is axially spaced evenly. There are multiple semi-circular ventilation slots running vertically through the second sleeve. The bottom end of the second sleeve is connected to the inside of the aluminum foil inner bag. The first circular plate is fixedly installed at the bottom of the second sleeve. The second circular plate is slidably installed inside the second sleeve. The top of the second sleeve is provided with a centripetal flange. The return spring is located inside the second sleeve and between the first and second circular plates. The sealing ring is fitted on the flange. The center of the first circular plate is provided with a vertically penetrating inlet and outlet. The diameter of the second circular plate is smaller than the inner diameter of the second sleeve.

[0006] By adopting the above technical solution, since the first circular plate is fixed to the inner bottom of the second sleeve, the return spring will cause the second circular plate to move upward. When no external force intervenes, the top of the second circular plate is in contact with the bottom of the flange. Because a sealing ring is fitted on the flange, the hard-to-hard rigid contact between the top of the second circular plate and the bottom of the flange is changed into a flexible contact, which greatly increases the sealing performance of the contact surface. When an external force intervenes and presses the second circular plate downward, because there is a gap between the second circular plate and the inner wall of the second sleeve, the wine can pass through the top of the second sleeve, and then continue downward through the gap, and finally enter the interior of the aluminum foil inner bag through the inlet and outlet on the first circular plate.

[0007] Multiple semi-circular ventilation grooves, axially and equally spaced on the inner wall of the first sleeve, can pressurize external gas into the space between the inside of the pressure-resistant barrel and the outside of the aluminum foil inner bag. Increasing the pressure can squeeze out the wine inside the aluminum foil inner bag, while decreasing the pressure can draw external wine into the aluminum foil inner bag.

[0008] In a further embodiment, the bottom outer side of the first sleeve is provided with a first extension edge in the centrifugal direction, and the bottom outer side of the second sleeve is provided with a second extension edge in the centrifugal direction. The bottom end of a semi-circular ventilation groove between the top of the second extension edge and the bottom of the first extension edge extends to the bottom of the first extension edge and needs to extend to the outer edge of the first extension edge. The gap between the bottom of the first extension edge and the top of the second extension edge is used to insert an aluminum film inner bag.

[0009] By adopting the above technical solution, the aluminum foil inner bag is a cylindrical structure. The top of the aluminum foil inner bag needs to be set as a slightly convex arc structure. Then, a circular hole is set at the center of the top of the aluminum foil inner bag. The circular hole is used to connect the inner and outer sides of the aluminum foil inner bag. The periphery of the circular hole needs to be thickened. This thickened area is clamped by the gap between the bottom of the first extension and the top of the second extension. The thickened area needs to be welded and fixed together with the second extension (ultrasonic welding). Because after clamping the aluminum foil inner bag, the thickened area of ​​the aluminum foil inner bag will be attached to the bottom of the first extension, which will cause the bottom of the semi-circular vent groove to lose the communication path with the inside of the pressure-resistant barrel. Therefore, an extension groove corresponding to the semi-circular vent groove needs to be set at the bottom of the first extension.

[0010] In a further embodiment, the inner wall of the second sleeve is provided with a plurality of vertical rectangular protrusions evenly arranged axially, the centripetal surface of the rectangular protrusions is set as an arc surface, and the diameter of the arc surface is adapted to the diameter of the second circular plate.

[0011] By adopting the above technical solution, the rectangular protrusion is used to limit the accuracy of the up and down movement of the second circular plate, and to prevent the second circular plate from tilting during the up and down movement.

[0012] In a further embodiment, the bottom periphery of the second circular plate is provided with an integrally formed downward third extension.

[0013] By adopting the above technical solution, the contact area between the periphery of the second circular plate and the rectangular protrusion is increased, thereby further increasing the guiding accuracy.

[0014] In a further embodiment, the top periphery of the first circular plate is provided with an integrally formed upward fourth extension, which is fixedly connected to the inner bottom of the second sleeve, and the top of the fourth extension is provided with a plurality of through holes evenly distributed axially.

[0015] By adopting the above technical solution, the perforation is used to increase the total area of ​​the channel through which the wine enters the inner aluminum foil bag, so that the wine can enter and exit the inner aluminum foil bag more quickly.

[0016] In a further embodiment, a dispenser is detachably installed at the top of the aluminum foil inner bag. The dispenser is integrally formed by a first cylindrical part, a second cylindrical part, and a connecting part. The inner diameter of the second cylindrical part is larger than the outer diameter of the first cylindrical part, and the second cylindrical part is located at the bottom outer side of the first cylindrical part. The connecting part is used to connect the top of the second cylindrical part to the outer wall of the first cylindrical part. The connecting part is provided with a through-hole. The outer diameter of the first cylindrical part is adapted to the inner diameter of the sealing ring. A plurality of upward protrusions are evenly arranged axially on the top of the second circular plate.

[0017] By adopting the above technical solution, the dispenser is pressed into the PET pressure vessel to a suitable depth using external force. At this point, the dispenser's inlet and outlet have pushed the second circular plate away from the silicone sealing ring, opening the sealed container and allowing beverages to flow in and out of the PET pressure vessel. Compressed gas flows between the PET pressure vessel and the sealed container, effectively isolating the gas and liquid.

[0018] In summary, this utility model has the following beneficial effects:

[0019] 1. Multiple semi-circular venting grooves that are axially and equally spaced on the inner wall of the first sleeve can pressurize external gas into the space between the inside of the pressure-resistant barrel and the outside of the aluminum foil inner bag. Increasing the pressure can squeeze out the wine inside the aluminum foil inner bag, and decreasing the pressure can draw external wine into the inside of the aluminum foil inner bag. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the positional relationship between the pressure-resistant bucket and the bucket lid module of this utility model;

[0021] Figure 2 This is a structural schematic diagram of the bucket lid module and dispenser of this utility model.

[0022] Figure 3This is a structural schematic diagram of the bucket lid module of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the first sleeve of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the second sleeve of this utility model;

[0025] Figure 6 This is a schematic diagram showing the positional relationship between the first circular plate, the second circular plate, the return spring, and the sealing ring of this utility model.

[0026] In the diagram, 1. Pressure-resistant barrel; 2. Aluminum foil inner bag; 3. Barrel lid module; 31. First sleeve; 32. Second sleeve; 33. First circular plate; 34. Second circular plate; 35. Return spring; 36. Sealing ring; 4. Distributor. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0029] Example 1:

[0030] like Figures 1-6As shown, a pressure-bearing barrel with an inner bag includes a pressure-resistant barrel 1, an aluminum foil inner bag 2, and a barrel lid module 3. The aluminum foil inner bag 2 is disposed inside the pressure-resistant barrel 1, and the barrel lid module 3 is used to seal the top of the pressure-resistant barrel 1 and the aluminum foil inner bag 2. The barrel lid module 3 includes a first sleeve 31, a second sleeve 32, a first circular plate 33, a second circular plate 34, a return spring 35, and a sealing ring 36, all with their axes vertically arranged. The first sleeve 31 is sleeved inside the top of the pressure-resistant barrel 1, and the second sleeve 32 is fixedly installed inside the first sleeve 31, with the outer wall of the second sleeve 32 fitting against the inner wall of the first sleeve 31. The inner wall of the first sleeve 31 is axially spaced with multiple vertically penetrating semicircular segments. The ventilation groove connects the bottom end of the second sleeve 32 to the inside of the aluminum foil inner bag 2. The first circular plate 33 is fixedly installed at the bottom inner part of the second sleeve 32. The second circular plate 34 is slidably installed inside the second sleeve 32. The top inner part of the second sleeve 32 is provided with a centripetal flange. The return spring 35 is located inside the second sleeve 32 and between the first circular plate 33 and the second circular plate 34. The sealing ring 36 is sleeved on the flange. The center of the first circular plate 33 is provided with a through inlet and outlet. The diameter of the second circular plate 34 is smaller than the inner diameter of the second sleeve 32. The bottom outer side of the first sleeve 31 is provided with a first centrifugal extension edge. The second sleeve... The bottom outer side of the second sleeve 32 is provided with a second extension in a centrifugal direction. Between the top of the second extension and the bottom of the first extension, there is a semi-circular ventilation groove extending to the bottom of the first extension and reaching its outer edge. The gap between the bottom of the first extension and the top of the second extension is used to insert the aluminum foil inner bag 2. The inner wall of the second sleeve 32 is axially and evenly provided with multiple vertical rectangular protrusions. The centripetal surface of the rectangular protrusions is an arc surface, and the diameter of the arc surface matches the diameter of the second circular plate 34. The bottom periphery of the second circular plate 34 is provided with an integrally formed downward third extension. The top periphery of the first circular plate 33 is provided with an integrally formed upward... The fourth extension is fixedly connected to the inner bottom of the second sleeve 32. The top of the fourth extension has multiple through holes evenly arranged axially. The top of the aluminum foil inner bag 2 is detachably equipped with a distributor 4. The distributor 4 is integrally formed by a first cylindrical part, a second cylindrical part and a connecting part. The inner diameter of the second cylindrical part is larger than the outer diameter of the first cylindrical part, and the second cylindrical part is located at the outer bottom of the first cylindrical part. The connecting part is used to connect the top of the second cylindrical part and the outer wall of the first cylindrical part. The connecting part is provided with a through-hole. The outer diameter of the first cylindrical part is adapted to the inner diameter of the sealing ring 36. The top of the second circular plate 34 has multiple upward protrusions evenly arranged axially.

[0031] Specific implementation process: The second circular plate 34 is also called the sealing piston. Because the first circular plate is fixed to the inner bottom of the second sleeve, the return spring will cause the second circular plate to move upward. When no external force intervenes, the top of the second circular plate is in contact with the bottom of the flange. Because a sealing ring is fitted on the flange, the hard-to-hard rigid contact between the top of the second circular plate and the bottom of the flange is changed into a flexible contact, which greatly increases the sealing performance of the contact surface. When an external force intervenes and presses the second circular plate downward, because there is a gap between the second circular plate and the inner wall of the second sleeve, the wine can pass through the top of the second sleeve and then continue downward through the gap, and finally enter the interior of the aluminum film inner bag through the inlet and outlet on the first circular plate.

[0032] Multiple semi-circular ventilation grooves, axially and equally spaced on the inner wall of the first sleeve, can pressurize external gas into the space between the inside of the pressure-resistant barrel and the outside of the aluminum foil inner bag. Increasing the pressure can squeeze out the wine inside the aluminum foil inner bag, while decreasing the pressure can draw external wine into the aluminum foil inner bag.

[0033] When in use, the dispenser can be installed on the lid module. The vent of the dispenser is connected to the space between the outer wall of the first cylindrical part and the inner wall of the second cylindrical part. This space is connected to the top of the semi-circular vent groove.

[0034] Once the dispenser is rotated to the designated position, a sealed container needs to be connected to the outside of the vent. High pressure is applied to fill the inner aluminum foil bag with liquid, increasing its volume and compressing the space inside the pressure tank. Gas inside the pressure tank enters the sealed container through the semi-circular vent groove and vent, increasing the pressure within the sealed container. After filling, the dispenser is moved upwards to a position where no external force is applied to the second circular plate. At this point, the second circular plate and the second sleeve form a one-way valve structure under the action of the first circular plate and the return spring. When needed, the dispenser is rotated downwards to the designated position, causing the internal gas pressure of the sealed container to flow into the pressure tank, compressing the inner aluminum foil bag and thus expelling the liquid. This achieves the liquid extrusion effect without the need for a carbon dioxide tank.

[0035] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0036] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A pressure barrel with an inner bag, characterized by: The device includes a pressure-resistant bucket (1), an aluminum foil inner bag (2), and a bucket lid module (3). The aluminum foil inner bag (2) is placed inside the pressure-resistant bucket (1), and the bucket lid module (3) is used to seal the top of the pressure-resistant bucket (1) and the aluminum foil inner bag (2). The bucket lid module (3) includes a first sleeve (31), a second sleeve (32), a first circular plate (33), a second circular plate (34), a return spring (35), and a sealing ring (36), all with their axes vertically arranged. The first sleeve (31) is fitted inside the top of the pressure-resistant bucket (1), and the second sleeve (32) is fixedly installed inside the first sleeve (31), with the outer wall of the second sleeve (32) fitting against the inner wall of the first sleeve (31). The inner walls of the first sleeve (31) are axially spaced evenly. The second sleeve (32) is provided with multiple vertically penetrating semi-circular ventilation grooves. The bottom end of the second sleeve (32) is connected to the inside of the aluminum foil inner bag (2). The first circular plate (33) is fixedly installed at the inner bottom of the second sleeve (32). The second circular plate (34) is slidably installed inside the second sleeve (32). The inner top of the second sleeve (32) is provided with a centripetal flange. The reset spring (35) is located inside the second sleeve (32) and is located between the first circular plate (33) and the second circular plate (34). The sealing ring (36) is sleeved on the flange. The center of the first circular plate (33) is provided with a vertically penetrating inlet and outlet. The diameter of the second circular plate (34) is smaller than the inner diameter of the second sleeve (32).

2. A pressure barrel with an inner bag according to claim 1, characterized in that: The bottom outer side of the first sleeve (31) is provided with a first extension in the centrifugal direction, and the bottom outer side of the second sleeve (32) is provided with a second extension in the centrifugal direction. The bottom end of the semi-circular ventilation groove between the top of the second extension and the bottom of the first extension extends to the bottom of the first extension and needs to extend to the outer edge of the first extension. The gap between the bottom of the first extension and the top of the second extension is used to insert the aluminum film inner bag (2).

3. A pressure barrel with an inner bag according to claim 1, characterized in that: The inner wall of the second sleeve (32) is uniformly provided with a plurality of vertical rectangular protrusions. The centripetal surface of the rectangular protrusions is set as an arc surface, and the diameter of the arc surface is adapted to the diameter of the second circular plate (34).

4. A pressure barrel with an inner bag according to claim 1, characterized in that: The bottom periphery of the second circular plate (34) is provided with an integrally formed downward third extension.

5. A pressure barrel with an inner bag according to claim 1, characterized in that: The top periphery of the first circular plate (33) is provided with an integrally formed upward fourth extension, which is fixedly connected to the inner bottom of the second sleeve (32). The top of the fourth extension is provided with a plurality of through holes evenly arranged axially.

6. A pressure barrel with an inner bag according to claim 1, characterized in that: The top of the aluminum foil inner bag (2) is detachably equipped with a distributor (4). The distributor (4) is integrally formed by a first cylindrical part, a second cylindrical part and a connecting part. The inner diameter of the second cylindrical part is larger than the outer diameter of the first cylindrical part, and the second cylindrical part is located at the bottom of the outer side of the first cylindrical part. The connecting part is used to connect the top of the second cylindrical part with the outer wall of the first cylindrical part. The connecting part is provided with a through-hole. The outer diameter of the first cylindrical part is adapted to the inner diameter of the sealing ring (36). The top of the second circular plate (34) is axially uniformly provided with multiple upward protrusions.

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