A wine barrel

Abstract

The present application provides a kind of wine barrel, belongs to liquor drinking equipment technical field.It present wine barrel reliability problem of insufficient use.The present application provides a kind of wine barrel, belongs to liquor drinking equipment technical field.It present wine barrel reliability problem of insufficient use.The present application provides a kind of wine barrel, belongs to liquor drinking equipment technical field.It present wine barrel reliability problem of insufficient use.The present application provides a kind of wine barrel, belongs to liquor drinking equipment technical field.It present wine barrel reliability problem of insufficient use.The present application provides a kind of wine barrel, belongs to liquor drinking equipment technical field.It present wine barrel reliability problem of insufficient use.The present application provides a kind of wine barrel, belongs to liquor drinking equipment technical field.It present wine barrel reliability problem of insufficient use.The present application provides a kind of wine barrel, belongs to liquor drinking equipment technical field.It present wine barrel reliability problem of insufficient use.The present application provides a kind of wine barrel, belongs to liquor drinking equipment technical field.It present wine barrel reliability problem of insufficient use.The present application provides a kind of wine barrel, belongs to liquor drinking equipment technical field.It present wine barrel reliability problem of insufficient use.The present application provides a kind of wine barrel, belongs to liquor drinking equipment technical field.It present wine barrel reliability problem of insufficient use.The present application provides a kind of wine barrel, belongs to liquor drinking equipment technical field.It present wine barrel reliability problem of insufficient use.The present application provides a kind of wine barrel, belongs to liquor drinking equipment technical field.It present wine barrels design can effectively avoid gas cylinder abnormal release gas and cause gas waste condition, so that wine barrel has the advantage of high use reliability.

Description

Technical Field

[0001] This invention belongs to the technical field of beverage drinking equipment, and relates to a wine barrel. Background Technology

[0002] A beer barrel is a container used to hold liquids such as beer. Typically, a beer barrel has a spout at its opening, which works in conjunction with a dispenser to expel the beer from the barrel. Traditionally, to expel beer from a beer barrel, a dispenser is attached to the spout. This dispenser has a dispensing channel and a gas inlet channel. The gas inlet channel is connected to a carbon dioxide canister. When the dispenser is opened, high-pressure gas from the carbon dioxide canister flows through the dispenser into the barrel, creating high pressure inside. Under this pressure, the beer flows out through the dispensing channel of the dispenser. This type of barrel requires an external carbon dioxide canister; therefore, if a carbon dioxide canister is not available on-site, the barrel cannot be used properly, resulting in a lack of ease of use.

[0003] In view of the above-mentioned shortcomings of existing barrels, the applicant previously developed a barrel with an embedded gas cylinder (application number: 202311109762.0), which includes a barrel body, a gas cylinder inside the barrel body, a piston hole in the mouth of the gas cylinder, a piston slidably disposed in the piston hole, and a sealed pressure chamber formed between the upper side of the piston and the inner wall of the piston hole. A trigger plate located below the piston is also provided in the mouth of the barrel. An upwardly extending elastic plate is provided on the main body of the trigger plate. The piston has a clearance space for accommodating the elastic plate and allowing the piston to move downward relative to the trigger plate. The upward movement of the piston causes the elastic plate to elastically return and leave the clearance space. After the elastic plate leaves the clearance space, the piston can press down on the elastic plate and drive the trigger plate downward to open the gas cylinder valve. In actual use, this device has the following shortcomings:

[0004] During transportation and storage, the trigger plate's elastic disc is located within the clearance space, and the barrel's pressure regulating function is inactive. Even if the piston moves downwards, the pressure chamber gradually expands, causing the pressure to decrease. When the pressure decreases to match the barrel's internal pressure, the piston stops moving downwards. At this point, the piston's downward stroke is insufficient to open the cylinder valve. However, under certain circumstances, such as excessive inflation during manufacturing leading to excessive pressure, or pressure changes due to external environmental factors (e.g., transporting the barrel to extremely cold northern regions or from low to high altitudes), the internal pressure may drop below the factory pressure, even creating negative pressure. This increases the piston's downward stroke, causing the inner top wall of the clearance space to push the trigger plate downwards, resulting in an abnormal opening of the cylinder valve and wasted gas. Therefore, this barrel has an unreliable reliability issue.

[0005] Currently, the conventional solution to this problem is as follows: as the piston moves downward, the greater the downward stroke, the lower the pressure in the pressure chamber. Therefore, it is usually considered to increase the length of the piston sleeve and the depth of the clearance space. This way, when the elastic plate of the trigger disc is located in the clearance space, the piston can move downward with a greater stroke but will not press down on the elastic plate, thus avoiding the abnormal opening of the gas cylinder valve. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a wine barrel. This invention solves the problem that during the transportation or storage of empty wine barrels, the gas cylinders inside the barrel may abnormally release gas, resulting in gas waste and insufficient reliability of the wine barrel.

[0007] The objective of this invention can be achieved through the following technical solution: A barrel, comprising a barrel body and a piston sleeve fixed within the barrel body, wherein a trigger disc is provided inside the piston sleeve and a piston is slidably disposed thereon, a sealed pressure chamber is formed between the upper side of the piston and the inner wall of the piston sleeve, the trigger disc has an upwardly extending elastic plate, the piston has a clearance space for accommodating the elastic plate and allowing the piston to move downward relative to the trigger disc, and a gas cylinder with a gas cylinder valve is connected to the piston sleeve and can release gas into the barrel body when the gas cylinder valve is opened, characterized in that a limiting sleeve is provided inside the piston sleeve located below the piston, the limiting sleeve has a cylindrical main body, the main body has a positioning flange that flares out radially, the positioning flange is clamped between the upper end of the gas cylinder and the inner wall of the piston sleeve; when the elastic plate is in the clearance space and the piston moves downward to abut against the limiting sleeve, the elastic plate is not pressed down by the piston.

[0008] In this barrel, the piston has a clearance space. During the transportation and storage of an empty barrel, the elastic plate is located within the clearance space. In this state, the barrel's pressure regulating function is not activated. At this time, there is no high-pressure gas inside the barrel. The piston will move downward under the pressure of the pressure chamber. However, during the downward movement of the piston, the elastic plate on the trigger plate will only move relative to the inner wall of the clearance space, and will not move downward with the piston to open the gas cylinder valve, thus avoiding the waste of gas in the gas cylinder.

[0009] This cask features an additional limiting sleeve within the piston sleeve. When the elastic plate is within the clearance space and the piston moves downwards, it abuts against the limiting sleeve after a certain downward distance, thus restricting further downward movement. At this point, the elastic plate is not pressed down by the piston. This design prevents the piston from continuously moving downwards and pushing the trigger plate downwards, thus avoiding abnormal opening of the gas cylinder valve, even when the pressure regulating function is not activated and certain special circumstances cause a decrease in gas pressure or even negative pressure within the cask. Clearly, this cask design effectively prevents gas waste caused by abnormal gas release from the cylinder, resulting in high reliability. Furthermore, the limiting sleeve has a cylindrical main body with a radially outward-flaring positioning flange. This flange is clamped between the upper end of the gas cylinder and the inner wall of the piston sleeve, ensuring good installation stability and providing stable support for the piston to effectively limit its downward movement. This further enhances the reliability of the cask.

[0010] In the aforementioned barrel, the positioning flange is located at the lower end of the main body. An annular insertion groove is formed between the outer wall of the main body and the inner wall of the piston sleeve. The lower end of the piston has a cylindrical extension. When the elastic plate is within the clearance space, the extension can be fitted into the insertion groove, and the lower end face of the extension can abut against the upper side of the positioning flange. By providing a cylindrical extension at the lower end of the piston, the axial length of the piston can be extended, increasing the contact area between the piston and the piston sleeve, thereby increasing the guiding effect of the piston sleeve on the piston, allowing the piston to move stably up and down. On the other hand, the design of the cylindrical extension also allows an annular insertion groove to be formed between the main body and the piston sleeve. When the pressure regulating function of the barrel needs to be activated, a certain amount of high-pressure gas needs to be injected into the barrel, causing the gas pressure inside the barrel to gradually increase. This utilizes the action of the high-pressure gas inside the barrel to push the piston upward, causing the elastic plate on the trigger plate to leave the clearance space, thus activating the pressure regulating function of the barrel. In this barrel, the piston extension matches and inserts into the groove, which further improves the piston's positional accuracy. This allows the piston to move upwards precisely and smoothly under the action of high-pressure gas, preventing the piston from tilting or jamming, and thus further improving the reliability of the barrel.

[0011] In the aforementioned barrel, the trigger plate is slidably disposed within the main body. The lower end of the piston sleeve has an installation opening. The upper end of the gas cylinder extends into the piston sleeve through the installation opening and is snapped and fixed to the inner wall of the piston sleeve. The inner wall of the piston sleeve has a clamping surface arranged circumferentially. The upper end of the gas cylinder has an annular support surface. The lower side of the positioning flange abuts against the support surface, and the outer edge of the upper side of the positioning flange abuts against the clamping surface. This design allows the support surface on the gas cylinder to provide excellent support for the positioning flange, thereby ensuring a good clamping effect between the support surface and the clamping surface on the positioning flange, guaranteeing good stability and high installation accuracy of the limiting sleeve. The snap-fit ​​installation of the gas cylinder improves the ease of installation and makes the manufacturing of this barrel more convenient. The limiting sleeve has a cylindrical main body, and the trigger plate is slidably disposed within the main body. This guides the trigger plate by relying on the main body, ensuring stable up-and-down movement of the trigger plate. This design enables the limiting sleeve to achieve both guiding and limiting effects, realizing multiple uses in one device.

[0012] In the aforementioned barrel, the upper end of the main body has a limiting flange that folds inward in a radial direction. The limiting flange allows the trigger disc to abut against and limit the upward movement of the trigger disc. There is a gap between the upper side of the limiting flange and the piston.

[0013] When activating the pressure regulating function of the barrel, a fixed amount of high-pressure gas needs to be injected into the barrel. During this process, the trigger plate is also subjected to the thrust of the high-pressure gas. By setting a limiting flange at the upper end of the main body, the upward movement of the trigger plate is limited. This ensures that the trigger plate is not moved upward along with the piston as the high-pressure gas pushes it upward, and the trigger plate will not move upward continuously due to the force of the high-pressure gas. This ensures that the elastic plate on the trigger plate can smoothly leave the clearance space, avoiding activation failure and making the barrel more stable and reliable in use. There is a gap between the upper side of the limiting flange and the piston, so that when the piston moves downward, it can rest against the positioning flange instead of against the limiting flange. In this case, because the positioning flange is supported by the support surface at the upper end of the gas cylinder, the limiting sleeve will have a more stable posture when the piston rests against the positioning flange, compared to the case where the piston rests against the limiting flange. This ensures that the limiting sleeve always maintains good stability, thereby improving the reliability of the barrel.

[0014] In the aforementioned barrel, an exhaust chamber is formed between the piston and the upper end of the gas cylinder, which can communicate with the inner cavity of the gas cylinder when the gas cylinder valve is opened. Several ventilation notches are arranged circumferentially on the limiting sleeve. The upper end of the ventilation notch penetrates the inner and outer sidewalls of the main body along the radial direction of the limiting sleeve. The lower end of the ventilation notch penetrates the inner and outer edges of the positioning flange along the radial direction of the limiting sleeve. The insertion groove communicates with the inner cavity of the barrel body.

[0015] This design allows the insertion groove to also facilitate gas flow. When the cylinder valve is opened, gas from the cylinder's inner cavity can sequentially pass through the exhaust chamber, the vent, and the insertion groove into the barrel. This ensures that when the pressure inside the barrel decreases, gas can be replenished promptly, maintaining the internal pressure within a certain range to meet the requirements for dispensing alcohol. Specifically, the lower end of the vent radially penetrates the inner and outer edges of the positioning flange, while the upper end radially penetrates the inner and outer side walls of the main body. This design not only connects the exhaust chamber and the insertion groove but also increases the gas flow area, thereby enhancing the gas flow rate. This allows the pressure inside the barrel to quickly recover after the cylinder valve is opened when the pressure drops. This gives the barrel's pressure regulation function high efficiency and practicality, ultimately improving the stability of alcohol dispensing.

[0016] In the aforementioned barrel, the inner wall of the piston sleeve is provided with several circumferentially venting grooves, and the insertion groove communicates with the inner cavity of the barrel body through these venting grooves. Preferably, there are three venting grooves. The design of multiple venting grooves can increase the gas flow rate, giving the barrel's pressure regulation function the advantage of high adjustment efficiency. Utilizing venting grooves to achieve communication between the insertion groove and the inner cavity of the barrel not only ensures smooth gas flow but also has the advantages of convenient processing and low manufacturing cost.

[0017] In the aforementioned barrel, the piston includes a piston body and a stop member. The piston body comprises a cylindrical body and a clearance portion located inside the body. The lower end of the body forms the extension portion. The stop member is located below the clearance portion and is fixedly connected to the piston body. The clearance portion has an upper clearance hole that is closed at the top and open at the bottom. The stop member has a lower clearance hole that extends through both ends along the sliding direction of the piston. The upper and lower clearance holes are aligned vertically and communicate with each other to form the clearance space. By providing a stop member below the piston body, the upper and lower clearance holes are aligned vertically and communicate with each other to form the clearance space. This design increases the depth of the clearance space, allowing the piston to have a larger floating stroke when the barrel's pressure regulating function is not activated. This reduces the risk of the elastic plate accidentally dislodging from the clearance space during the transportation and storage of empty barrels, thus improving the reliability of the barrel's pressure regulating function. The cylindrical body increases the contact area between the piston and the piston sleeve, thereby increasing the guiding effect of the piston sleeve on the piston, allowing the piston to move up and down stably.

[0018] In the aforementioned barrel, the abutment includes a cylindrical outer cylinder and an inner sleeve located inside the outer cylinder and concentrically arranged with it. The inner hole of the inner sleeve forms the lower clearance hole. The diameter of the lower end of the inner sleeve gradually decreases from top to bottom and forms a constricted shape. An annular groove with the slot facing downward and arranged around the outer periphery of the inner sleeve is formed between the outer cylinder and the inner sleeve. After the elastic piece leaves the clearance space, the upper end of the elastic piece can enter the annular groove.

[0019] The diameter of the lower end of the inner sleeve gradually decreases from top to bottom and forms a constricted shape. This allows the elastic plate to be in a free-open state when the pressure regulating function of the barrel is not activated and the elastic plate is in the upper clearance hole, without being squeezed by the inner wall of the upper clearance hole. When the pressure regulating function is activated and the piston moves upward until the elastic plate contacts the lower end of the inner sleeve, the spring plate will be squeezed by the constricted lower end and shrink and deform. When it detaches from the lower end, it will automatically open and enter the annular groove.

[0020] In conventional designs, the lower opening of the clearance space is a straight cylindrical structure rather than a constricted opening. Therefore, when the barrel's pressure regulating function is not activated and the elastic plate is within the clearance space, the elastic plate remains under pressure. Prolonged pressure causes the elastic plate to deform, preventing it from springing open properly upon triggering. This results in the elastic plate failing to automatically open into the annular groove, leading to unsuccessful triggering. This barrel, however, effectively avoids this problem by using a constricted opening at the lower end of the inner sleeve, ensuring excellent reliability.

[0021] In the aforementioned barrel, when the elastic plate is within the clearance space and the piston moves downward to abut against the limiting sleeve, there is a gap between the upper end of the elastic plate and the inner top wall of the upper clearance hole. This design ensures that even if the pressure inside the barrel decreases or even becomes negative under certain special circumstances when the pressure regulating function is not activated, the piston will not exert downward pressure on the elastic plate, thus preventing the piston from pushing the trigger plate downward and causing the cylinder valve to open abnormally.

[0022] In the aforementioned barrel, when the upper end of the elastic plate is within the annular groove, the extension portion is entirely outside the insertion groove. When the upper end of the elastic plate is within the annular groove, the barrel's pressure regulating function is activated. As the piston moves downward and opens the gas cylinder valve, the insertion groove facilitates gas flow. At this time, the extension portion completely disengages from the insertion groove, ensuring that the gas flow is not obstructed by the extension portion, thus increasing the gas flow rate and allowing the pressure inside the barrel to quickly recover. This gives the barrel's pressure regulating function high efficiency and practicality, thereby improving the barrel's dispensing stability.

[0023] In the aforementioned barrel, the trigger disc is slidably disposed within the main body. The upper end of the main body has a radially inwardly folding limiting flange, which allows the trigger disc to abut against, thus limiting its upward movement. When the elastic plate is within the clearance space, the piston can move downward to abut against the upper side of the limiting flange. In this design, by using the upper side of the limiting flange to abut against the piston to limit its downward movement, the abnormal opening of the cylinder valve is prevented when the pressure regulating function is not activated.

[0024] Compared with existing technologies, this barrel has the following advantages:

[0025] 1. This cask features an additional limiting sleeve within the piston sleeve. This design prevents the piston from continuously moving downwards and pushing the trigger plate downwards, thus avoiding abnormal opening of the gas cylinder valve, even in situations where the pressure regulating function is not activated and the internal pressure drops or even becomes negative. Therefore, this cask design effectively prevents gas waste caused by abnormal gas release from the cylinder, resulting in high reliability.

[0026] 2. In this barrel, the diameter of the lower end of the inner sleeve gradually decreases from top to bottom and forms a constricted shape, which can prevent the elastic plate from being under constant pressure, thereby effectively avoiding the problem of the elastic plate failing to trigger, making this barrel have excellent reliability. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of the barrel.

[0028] Figure 2 This is a partial cross-sectional view of the barrel when its pressure regulating function is not activated.

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the limiting sleeve.

[0030] Figure 4 This is a three-dimensional structural diagram of the piston sleeve.

[0031] Figure 5 This is a partial cross-sectional view of the barrel after its pressure regulation function has been activated.

[0032] Figure 6 This is a partial cross-sectional view of the barrel as the piston moves downward to open the cylinder valve.

[0033] Figure 7 This is a three-dimensional sectional view of the piston.

[0034] Figure 8 This is a partial cross-sectional view of the barrel in Example 2 when the pressure regulating function is not activated.

[0035] In the diagram, 1. Barrel body; 2. Piston sleeve; 21. Mounting opening; 22. Clamping surface; 23. Vent groove; 3. Trigger plate; 31. Elastic plate; 4. Piston; 41. Piston body; 411. Main body; 411a. Extension; 412. Clearance part; 42. Abutment; 421. Outer cylinder; 422. Inner sleeve; 5. Pressure chamber; 6. Clearance space; 61. Upper clearance hole; 62. Lower clearance hole; 7. Gas cylinder; 71. Gas cylinder valve; 72. Support surface; 8. Limiting sleeve; 81. Main body; 82. Positioning flange; 83. Limiting flange; 84. Vent notch; 9. Insertion groove; 10. Exhaust chamber; 11. Annular groove; 12. Wine outlet pipe; 13. Wine outlet valve; 14. Connecting piece; 15. Sealing ring. Detailed Implementation

[0036] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0037] Example 1

[0038] like Figure 1 As shown, this beer barrel includes a barrel body 1 and a piston sleeve 2 fixed inside the barrel body 1. A dispensing valve 13 is connected to the opening of the barrel body 1, and a dispensing pipe 12 extending to the bottom of the inner cavity of the barrel body 1 is connected to the dispensing valve 13. A connector 14 located inside the barrel body 1 is connected to the dispensing valve 13, and the piston sleeve 2 is snapped onto the connector 14. When the dispensing valve 13 is opened, the beer inside the barrel body 1 can flow out through the dispensing pipe 12 and the dispensing valve 13 under the action of high-pressure gas inside the barrel body 1 for people to drink.

[0039] Combination Figure 1 and Figure 2 As shown, a trigger disc 3 is provided inside the piston sleeve 2, and a piston 4 is slidably mounted thereon. A sealed pressure chamber 5 is formed between the upper side of the piston 4 and the inner wall of the piston sleeve 2. The trigger disc 3 has an upwardly extending elastic plate 31, and the piston 4 has a clearance space 6 for accommodating the elastic plate 31 and allowing the piston 4 to move downward relative to the trigger disc 3. A gas cylinder 7 with a gas cylinder valve 71 is connected to the piston sleeve 2, which can release gas into the barrel 1 when the gas cylinder valve 71 is opened. A limiting sleeve 8 is provided inside the piston sleeve 2 located below the piston 4. The limiting sleeve 8 has a cylindrical main body 81, and a positioning flange 82 that is radially outwardly flared on the main body 81. The positioning flange 82 is clamped between the upper end of the gas cylinder 7 and the inner wall of the piston sleeve 2. Figure 2 As shown, when the elastic plate 31 is within the clearance space 6 and the piston 4 moves downward to abut against the limiting sleeve 8, there is a gap H between the upper end of the elastic plate 31 and the inner top wall of the upper clearance hole 61. Therefore, the elastic plate 31 is not pressed down by the piston 4. This design ensures that even if the pressure inside the barrel 1 decreases or even becomes negatively pressured due to certain special circumstances when the pressure regulating function is not activated, the piston 4 will not exert downward pressure on the elastic plate 31, thereby preventing the piston 4 from pushing the trigger plate 3 downward and causing the cylinder valve 71 to open abnormally.

[0040] like Figure 2 and Figure 3 As shown, the positioning flange 82 is located at the lower end of the main body 81. An annular insertion groove 9 is formed between the outer wall of the main body 81 and the inner wall of the piston sleeve 2. The lower end of the piston 4 has a cylindrical extension 411a, which is fitted into the insertion groove 9. When the elastic plate 31 is in the clearance space 6, the piston 4 can move downward until the lower end face of the extension 411a abuts against the upper side of the positioning flange 82. The upper end of the main body 81 has a limiting flange 83 that is radially inwardly folded in. The limiting flange 83 allows the trigger disc 3 to abut against to limit the upward movement of the trigger disc 3. There is a gap between the upper side of the limiting flange 83 and the piston 4.

[0041] like Figure 2 and Figure 4As shown, the trigger disc 3 is slidably disposed within the main body 81. The lower end of the piston sleeve 2 has an installation opening 21. The upper end of the gas cylinder 7 extends into the piston sleeve 2 through the installation opening 21 and is snapped and fixed to the inner side wall of the piston sleeve 2. The inner side wall of the piston sleeve 2 has a clamping surface 22 arranged circumferentially. The upper end of the gas cylinder 7 has an annular support surface 72. The lower side of the positioning flange 82 abuts against the support surface 72, and the outer edge of the upper side of the positioning flange 82 abuts against the clamping surface 22. Through this design, the support surface 72 on the gas cylinder 7 can form a good support effect on the positioning flange 82, thereby enabling the support surface 72 and the clamping surface 22 to form a good clamping effect on the positioning flange 82, ensuring good installation stability and high installation accuracy of the limiting sleeve 8.

[0042] like Figure 3 , Figure 5 and Figure 6 As shown, when the upper end of the elastic piece 31 is inside the annular groove 11, the extension 411a is entirely outside the insertion groove 9. An exhaust chamber 10 is formed between the piston 4 and the upper end of the gas cylinder 7, which can communicate with the inner cavity of the gas cylinder 7 when the gas cylinder valve 71 is opened. A plurality of ventilation notches 84 are sequentially spaced along the circumferential direction on the limiting sleeve 8. The upper end of the ventilation notch 84 penetrates the inner and outer sidewalls of the main body 81 radially along the limiting sleeve 8, and the lower end of the ventilation notch 84 penetrates the inner and outer edges of the positioning flange 82 radially along the limiting sleeve 8. Figure 4 As shown, the inner wall of the piston sleeve 2 is provided with several venting grooves 23 along the circumferential direction, and the insertion groove 9 communicates with the inner cavity of the barrel 1 through the venting grooves 23. In this embodiment, the number of venting notches 84 is four. In the actual manufacturing process, the number of venting notches 84 can be appropriately increased or decreased, such as two, three, five, six, etc. At the same time, the number of venting grooves 23 is three, and the number of venting grooves 23 can also be appropriately increased or decreased.

[0043] like Figure 7As shown, the piston 4 includes a piston body 41 and abutment member 42. The piston body 41 includes a cylindrical body 411 and a clearance portion 412 located inside the body 411. The lower end of the body 411 forms an extension portion 411a. The clearance portion 412 has an upper clearance hole 61 that is closed at the top and open at the bottom. The abutment member 42 has a lower clearance hole 62 that extends through both ends along the sliding direction of the piston 4. The abutment member 42 is located below the clearance portion 412 and is snapped into the piston body 41. The upper clearance hole 61 and the lower clearance hole 62 are aligned vertically and connected to each other to form a clearance space 6. The abutment member 42 includes a cylindrical outer cylinder 421 and an inner sleeve 422 located inside the outer cylinder 421 and concentrically disposed with it. The inner hole of the inner sleeve 422 forms a lower clearance hole 62. The diameter of the lower end of the inner sleeve 422 gradually decreases from top to bottom and forms a constricted shape. An annular groove 11 with the groove facing downward and surrounding the outer periphery of the inner sleeve 422 is formed between the outer cylinder 421 and the inner sleeve 422. Figure 6 As shown, after the elastic sheet 31 leaves the clearance space 6, the upper end of the elastic sheet 31 can enter the annular groove 11 and abut against the bottom of the annular groove 11.

[0044] The working principle of this wine barrel is explained below with reference to the accompanying diagram:

[0045] The pressure regulating function is inactive: In this barrel, the piston 4 has a clearance space 6. During the transportation and storage of empty barrels, if... Figure 2 As shown, the elastic plate 31 is within the clearance space 6. In this state, the pressure regulating function of the barrel is not activated. At this time, there is no high-pressure gas in the barrel 1. The piston 4 moves downward under the pressure of the pressure chamber 5. However, during the downward movement of the piston 4, the elastic plate 31 on the trigger plate 3 will only slide along the inner wall of the clearance space 6 and will not move downward with the piston 4 to open the gas cylinder valve 71, thus avoiding the waste of gas in the gas cylinder 7. Even if some special circumstances cause the gas pressure in the barrel 1 to drop or even become negative, the limiting sleeve 8 can limit the downward movement of the piston 4. Therefore, when the pressure regulating function of the barrel is not activated, the piston 4 will not press down on the elastic plate 31 and push the trigger plate 3 downward, causing the gas cylinder valve 71 to open abnormally.

[0046] Activating the pressure regulating function: When the barrel is delivered to the customer, the user needs to fill the barrel 1 with a certain amount of high-pressure gas to activate the pressure regulating function. At this time, since the exhaust chamber 10 is connected to the inner cavity of the barrel 1, the high-pressure gas filled into the barrel 1 will enter the exhaust chamber 10 and push the piston 4 upward. After the piston 4 moves upward, the elastic plate 31 will move away from the clearance space 6, as... Figure 5As shown, after the elastic piece 31 leaves the clearance space 6, the pressure regulating function of the barrel is activated. At this time, the upper end of the elastic piece 31 is located in the annular groove 11, and the sealing ring 15 blocks the gas outlet passage of the gas cylinder valve 71.

[0047] like Figure 6 As shown, when the pressure inside the barrel 1 decreases, the pressure in the exhaust chamber 10 also decreases. At this time, the piston 4 presses down on the elastic plate 31 and drives the trigger disc 3 to move downward, pushing the cylinder valve 71 downward. This prevents the sealing ring 15 from blocking the gas outlet passage of the cylinder valve 71. The cylinder valve 71 is then opened, and the gas inside the cylinder 7 passes through the exhaust chamber 10, the vent 84, and the insertion groove 9 into the barrel 1, causing the gas pressure inside the barrel 1 to increase. Once this gas pressure reaches a set value, it pushes the piston 4 upward, closing the cylinder valve 71. Figure 5 As shown, this ensures that the gas pressure inside barrel 1 is maintained within a certain range to meet the requirements for wine production.

[0048] Example 2

[0049] This embodiment is basically the same as embodiment one in structure and principle, except that: Figure 8 As shown, the upper end of the main body 81 has a limiting flange 83 that folds inward radially. The limiting flange 83 allows the trigger disc 3 to abut against, limiting the upward movement of the trigger disc 3. When the elastic plate 31 is within the clearance space 6, the piston 4 can move downward to abut against the upper side of the limiting flange 83. In this design, by abutting against the piston 4 with the upper side of the limiting flange 83 to limit the downward movement of the piston 4, the abnormal opening of the gas cylinder valve 71 when the pressure regulating function is not activated is avoided.

[0050] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0051] Although this article frequently uses terms such as 1. barrel body; 2. piston sleeve; 21. mounting opening; 22. clamping surface; 23. venting groove; 3. trigger plate; 31. elastic plate; 4. piston; 41. piston body; 411. main body; 411a. extension; 412. clearance part; 42. abutment; 421. outer cylinder; 422. inner sleeve; 5. pressure chamber; 6. clearance space; 61. upper clearance hole; 62. lower clearance hole; 7. gas cylinder; 71. gas cylinder valve; 72. support surface; 8. limiting sleeve; 81. main body; 82. positioning flange; 83. limiting flange; 84. venting notch; 9. insertion groove; 10. exhaust chamber; 11. annular groove; 12. wine outlet pipe; 13. wine outlet valve; 14. connector; 15. sealing ring, the possibility of using other terms cannot be excluded. The use of these terms is merely for the convenience of describing and explaining the nature of the invention; interpreting them as any kind of additional limitation would be contrary to the spirit of the invention.

Claims

1. A barrel, comprising a barrel body (1) and a piston sleeve (2) fixed inside the barrel body (1), wherein the piston sleeve (2) is provided with a trigger plate (3) and a piston (4) is slidably disposed thereon, a sealed pressure chamber (5) is formed between the upper side of the piston (4) and the inner wall of the piston sleeve (2), the trigger plate (3) has an upwardly extending elastic plate (31), the piston (4) has a clearance space (6) for accommodating the elastic plate (31) and allowing the piston (4) to move downward relative to the trigger plate (3), and a gas cylinder (7) having a gas cylinder valve (71) and capable of releasing gas into the barrel body (1) when the gas cylinder valve (71) is opened, characterized in that, The piston sleeve (2) is provided with a limiting sleeve (8) located below the piston (4). The limiting sleeve (8) has a cylindrical main body (81). An annular insertion groove (9) is formed between the outer wall of the main body (81) and the inner wall of the piston sleeve (2). The insertion groove (9) communicates with the inner cavity of the barrel (1). The main body (81) is provided with a positioning flange (82) that is radially outward. The positioning flange (82) is clamped between the upper end of the gas cylinder (7) and the piston sleeve. (2) Between the inner walls; when the elastic sheet (31) is in the clearance space (6) and the piston (4) moves down to abut against the limiting sleeve (8), the elastic sheet (31) is not pressed down by the piston (4), and an exhaust chamber (10) is formed between the piston (4) and the upper end of the gas cylinder (7) that can communicate with the inner cavity of the gas cylinder (7) when the gas cylinder valve (71) is opened. The limiting sleeve (8) is provided with a ventilation notch (84) that connects the exhaust chamber (10) and the insertion groove (9).

2. The barrel according to claim 1, characterized in that, The positioning flange (82) is located at the lower end of the main body (81), and the lower end of the piston (4) has a cylindrical extension (411a). When the elastic sheet (31) is in the clearance space (6), the extension (411a) can be matched and inserted into the insertion groove (9), and the lower end face of the extension (411a) can abut against the upper side of the positioning flange (82).

3. The barrel according to claim 1 or 2, characterized in that, The trigger disc (3) is slidably disposed inside the main body (81). The lower end of the piston sleeve (2) has an installation opening (21). The upper end of the gas cylinder (7) extends into the piston sleeve (2) through the installation opening (21) and is snapped and fixed to the inner side wall of the piston sleeve (2). The inner side wall of the piston sleeve (2) has a clamping surface (22) arranged circumferentially. The upper end of the gas cylinder (7) has an annular support surface (72). The lower side of the positioning flange (82) abuts against the support surface (72), and the outer edge of the upper side of the positioning flange (82) abuts against the clamping surface (22).

4. The barrel according to claim 3, characterized in that, The upper end of the main body (81) has a limiting flange (83) that is radially inwardly turned inward. The limiting flange (83) allows the trigger disc (3) to abut against it to limit the upward movement of the trigger disc (3). There is a gap between the upper side of the limiting flange (83) and the piston (4).

5. The barrel according to claim 2, characterized in that, The limiting sleeve (8) is provided with a plurality of ventilation gaps (84) arranged at intervals along the circumference. The upper end of the ventilation gap (84) passes through the inner and outer sidewalls of the main body (81) along the radial direction of the limiting sleeve (8), and the lower end of the ventilation gap (84) passes through the inner and outer edges of the positioning flange (82) along the radial direction of the limiting sleeve (8).

6. The barrel according to claim 2, characterized in that, The piston (4) includes a piston body (41) and abutment (42). The piston body (41) includes a cylindrical body (411) and a clearance portion (412) located inside the body (411). The lower end of the body (411) forms the extension portion (411a). The abutment (42) is located below the clearance portion (412) and is fixedly connected to the piston body (41). The clearance portion (412) has an upper clearance hole (61) that is closed at the top and open at the bottom. The abutment (42) has a lower clearance hole (62) that extends through both ends along the sliding direction of the piston (4). The upper clearance hole (61) and the lower clearance hole (62) are aligned and connected to each other to form the clearance space (6).

7. The barrel according to claim 6, characterized in that, The abutment (42) includes a cylindrical outer cylinder (421) and an inner sleeve (422) located inside the outer cylinder (421) and concentrically arranged with the outer cylinder (421). The inner hole of the inner sleeve (422) forms the lower clearance hole (62). The diameter of the lower end of the inner sleeve (422) gradually decreases from top to bottom and forms a constricted shape. An annular groove (11) with the slot facing downward and arranged around the outer periphery of the inner sleeve (422) is formed between the outer cylinder (421) and the inner sleeve (422). After the elastic piece (31) leaves the clearance space (6), the upper end of the elastic piece (31) can enter the annular groove (11).

8. The barrel according to claim 6, characterized in that, When the elastic plate (31) is in the clearance space (6) and the piston (4) moves downward to abut against the limiting sleeve (8), there is a gap between the upper end of the elastic plate (31) and the inner top wall of the upper clearance hole (61).

9. The barrel according to claim 7, characterized in that, When the upper end of the elastic sheet (31) is in the annular groove (11), the extension (411a) is entirely outside the insertion groove (9).

10. The barrel according to claim 1, characterized in that, The trigger disc (3) is slidably disposed within the main body (81). The upper end of the main body (81) has a limiting flange (83) that is radially inwardly folded inward. The limiting flange (83) allows the trigger disc (3) to abut against it to limit the upward movement of the trigger disc (3). When the elastic plate (31) is within the clearance space (6), the piston (4) can move downward to abut against the upper side of the limiting flange (83).

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