A wine barrel

Abstract

This invention provides a wine barrel, belonging to the technical field of beverage equipment. It solves the problem of low reliability in existing wine barrels. This wine barrel includes a barrel body and a gas cylinder disposed within the barrel body. The top of the gas cylinder has a piston chamber, within which a piston is slidably disposed. This piston divides the piston chamber into a pressure chamber and a balance chamber. An outlet valve is provided in the gas cylinder opening. A trigger element is provided in the balance chamber. The piston has a clearance hole. The trigger element has at least two spring plates extending upward into the clearance hole. A stop element is fixed below the opening of the clearance hole on the piston. The minimum radial distance of the stop element from the center line of the clearance hole is less than the radius of the clearance hole. When the spring plates are located within the clearance hole, the stop element is located below the spring plates, and the minimum radial distance of the stop element from the center line of the clearance hole is less than the maximum radial distance of the top of the spring plates from the center line of the clearance hole. The piston can move upward until the stop element is above the spring plates. This wine barrel offers higher reliability.

Description

Technical Field

[0001] This invention belongs to the field of beverage equipment technology, and relates to a wine barrel. 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, beer kegs are equipped with a spray nozzle at the mouth, which works in conjunction with a dispenser to force the beverage 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 beer 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.

[0003] To address the aforementioned issues, a patent document (application number: 202311109762.0) discloses a wine barrel, comprising a barrel body, a gas cylinder with a gas cylinder valve inside the barrel body, a bottle mouth at the top of the gas cylinder with a piston hole inside the bottle mouth, a piston slidably disposed inside the piston hole, a sealed pressure chamber formed between the upper side of the piston and the inner wall of the piston hole, and a trigger plate located below the piston inside the bottle mouth, the trigger plate comprising a main body slidably connected to the bottle mouth, and a limiting part on the bottle mouth that limits the upward movement of the trigger plate. After production, the gas cylinder is already installed in the barrel. However, before filling the barrel with liquor, it is necessary to prevent the gas cylinder valve from opening. Therefore, the piston has a clearance space to accommodate the elastic plate and allow the piston to move downward relative to the trigger plate. The two elastic plates are located in the clearance space. At this time, the piston will not press the elastic plate when moving up and down. When the barrel is filled with liquor, it is necessary to trigger the connection between the elastic plate and the piston. Gas is introduced into the barrel. Under the action of the gas, the piston moves upward, causing the elastic plate to elastically recover 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 to move downward to open the gas cylinder valve.

[0004] After the elastic plate leaves the clearance space, it needs to expand radially to recover by its own elastic force. In other words, when the barrel is not filled with wine, the elastic plate is always in a compressed and deformed state and is stretched within the clearance space. If the barrel is not used for a long time after production, the elastic plate will be compressed within the clearance space for a long time, which can easily lead to aging of the elastic plate and a decrease in elastic force. When the barrel is filled with wine and needs to be triggered, even if the elastic plate leaves the clearance space, the elastic plate with decreased elastic force will be difficult to expand radially, making it difficult for the piston to come into contact with the elastic plate, resulting in low reliability.

[0005] Since the above problems are caused by the elastic sheet being squeezed and deformed, in order to prevent the elastic sheet from being difficult to unfold and reset after leaving the clearance space due to the decrease in elastic force, those skilled in the art can easily think of increasing the radial dimension of the clearance space based on the above structure, thereby avoiding the elastic sheet being excessively squeezed and deformed, or increasing the elastic properties of the elastic sheet itself, such as changing the material of the elastic sheet or increasing the size of the elastic sheet. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a wine barrel that solves the problem of low reliability in the use of existing wine barrels.

[0007] The objective of this invention can be achieved through the following technical solution: A barrel, comprising a barrel body and a gas cylinder disposed within the barrel body, wherein the top of the gas cylinder has a piston chamber, and a piston is slidably disposed within the piston chamber, the piston dividing the piston chamber into an upper and closed pressure chamber and a lower balance chamber respectively connected to the inner cavity of the barrel body and the gas cylinder opening, wherein an outlet valve is provided within the gas cylinder opening, and a triggering element capable of pressing down and opening the outlet valve is provided within the balance chamber, wherein the piston has a downward-facing clearance hole, and the triggering element has at least two upward-extending elastic pieces that can be elastically deformed relative to each other within the clearance hole, characterized in that a stop member is fixed on the wall of the clearance hole or below the opening of the clearance hole, the minimum radial distance of the stop member from the center line of the clearance hole is less than the radius of the clearance hole, when the elastic pieces are located within the clearance hole, the stop member is located below the elastic pieces, and the minimum radial distance of the stop member from the center line of the clearance hole is less than the maximum radial distance of the top of the elastic pieces from the center line of the clearance hole, and the piston can move upward until the stop member is above the elastic pieces.

[0008] When the barrel is not filled with alcohol, both springs on the trigger are located in the clearance hole of the piston. The springs are in a natural state without being compressed, but they are elastically deformable. The piston will not come into contact with the springs in the direction of movement within a limited up and down movement stroke. Therefore, the trigger will not press down the gas valve, and the gas cylinder will not release gas when it is not filled with alcohol. When the barrel is filled with liquor, the piston and trigger mechanism need to be activated to inject gas into the barrel. The balance chamber below the piston is connected to the inner cavity of the barrel, so the gas pressure in the balance chamber increases. When the gas pressure in the balance chamber is greater than the gas pressure in the pressure chamber, the piston moves upward, causing the spring on the trigger mechanism to be pulled out of the clearance hole relative to the piston. A stop is fixed on the piston, which is located below the clearance hole opening. The minimum radial distance between the stop and the center line of the clearance hole is less than the radius of the clearance hole. In particular, the minimum radial distance between the stop and the center line of the clearance hole is less than the maximum radial distance between the top of the spring and the center line of the clearance hole. Therefore, as the spring is pulled out of the clearance hole and moves to the bottom of the stop, the moving part will squeeze the spring radially, causing the two springs to deform and move closer together. When the two springs move to the bottom of the stop, they will move away from each other and reset under their own elastic force, thus triggering the linkage between the trigger mechanism and the piston. Subsequently, whenever the barrel is drained, causing a decrease in pressure within the barrel's inner cavity and the balance chamber (i.e., the pressure in the balance chamber is less than the pressure in the pressure chamber above the piston), the piston moves downwards. The abutment then presses against the spring, causing the trigger to press down on the vent valve, releasing gas from the cylinder. Therefore, even if the barrel is not used for a long time, and the spring remains within the clearance hole, it is not compressed or deformed; it remains in its natural state. The deformation is only momentarily caused by the abutment when it comes out of the clearance hole. This prevents the spring from aging and affecting its elasticity, allowing it to open and return to its original position after being released, resulting in high reliability.

[0009] In the aforementioned barrel, the abutment includes a ring-shaped fixing part fixed to the piston and an abutment part located at the lower end edge of the fixing part. The fixing part is coaxially arranged with the piston, and the upper end of the inner hole of the fixing part is aligned and communicates with the lower end opening of the relief hole. The inner diameter of the fixing part is equal to or smaller than the diameter of the relief hole, and the minimum radial distance of the abutment part from the center line of the relief hole is less than the radius of the relief hole. The fixing part is used to connect to the piston, and its inner hole is aligned with the relief hole. When the piston moves upward, the spring plate moves downward and disengages from the relief hole and the inner hole of the fixing part, thereby receiving radial pressure from the lower abutment part. After the spring plate disengages, it radially springs back to its original position, so that it can be aligned with the upper abutment part.

[0010] In the aforementioned barrel, the abutment is conical and coaxially arranged with the fixing part, with the smaller diameter end of the abutment facing downwards. The lower end aperture of the abutment is smaller than the clearance aperture. There are two spring pieces, and when the two spring pieces are located within the clearance aperture, the maximum radial distance between the tops of the two spring pieces is greater than the lower aperture of the abutment. The conical shape of the abutment ensures that even after the spring pieces disengage from the clearance aperture and are positioned below the abutment, they remain aligned with the upper abutment, reliably pressing down on the spring pieces. Furthermore, the conical shape allows the abutment to insert between the two spring pieces when the spring pieces disengage from the clearance aperture and are positioned below the abutment, and the piston moves downwards. This opens the two spring pieces, allowing them to slide upwards along the outer surface of the abutment and ultimately abut against the lower end face of the fixing part, making the linkage between the piston and the trigger more reliable.

[0011] In the aforementioned barrel, the lower outer circumferential surface of the abutment part has a guide cone surface in the circumferential direction. The taper of the guide cone surface is greater than the taper of the outer circumferential surface of the abutment part. The outer diameter of the lower end of the guide cone surface is smaller than the radial distance between the inner surfaces of the tops of the two spring pieces. The outer edge of the fixing part has a downwardly protruding cylindrical push part in the circumferential direction, which surrounds the abutment part. The taper of the guide cone surface is greater than the taper of the outer circumferential surface of the abutment part, which further reduces the diameter of the lower outer circumferential surface of the abutment part. When the piston moves downward, the abutment part inserts between the two spring pieces and spreads them apart, gradually inserting between the abutment part and the push part, so that the piston and the trigger can be linked, improving the reliability of their abutment.

[0012] In the aforementioned barrel, the fixing part is fixedly connected to the piston via a snap-fit ​​connection, a threaded connection, or an integral structure. A separate structure for the fixing part and the piston facilitates manufacturing, while an integral structure enhances structural stability and reliability.

[0013] In the aforementioned barrel, the trigger element includes a trigger disc. The lower ends of the two spring pieces are vertically fixed at the center of the trigger disc, and their upper ends are both arc-shaped. The outer surfaces of the upper ends of the two spring pieces are located on the same conical surface with the smaller end facing downwards, and the taper of the conical surface where the outer surfaces of the upper ends of the two spring pieces are located is approximately the same as the taper of the inner surface of the abutment part. The upper ends of the two spring pieces form an outwardly expanding structure. When the spring pieces are located in the clearance hole and the piston moves upwards, the outer surfaces of the upper ends of the two spring pieces first fit against the inner surface of the abutment part, ensuring the stable and precise posture of the trigger element. Then, the abutment part radially presses the two spring pieces, ensuring reliable and stable operation.

[0014] In the aforementioned barrel, the maximum outer diameter of the conical surface containing the upper outer sides of the two spring pieces is smaller than the diameter of the relief hole, and the maximum outer diameter of the conical surface containing the upper outer sides of the two spring pieces is larger than the minimum diameter of the abutment part. That is, when the two spring pieces are located in the relief hole, they are in a natural state and will not be squeezed by the relief hole wall, thus avoiding aging of the spring pieces. When they are dislodged from the relief hole, they can be radially opened and aligned with the abutment part above.

[0015] In the aforementioned barrel, the trigger plate forms a clamping hole with its lower end extending between two spring plates. The trigger plate also has a limiting portion located above the clamping hole. The gas outlet valve includes a tubular nozzle extending upwards from the mouth of a gas cylinder. The upper end of the nozzle passes through the clamping hole and abuts against the lower end face of the limiting portion. Under the action of a lower spring, the nozzle abuts upwards against the limiting portion, thus achieving linkage between the trigger and the gas outlet valve.

[0016] In the aforementioned barrel, a limiting sleeve is also provided within the balance chamber. The lower outer circumferential surface of this limiting sleeve has a fixed protrusion that is fixed to the gas cylinder. A gap exists between the outer circumferential surface of the limiting sleeve and the inner circumferential surface of the balance chamber. The lower edge of the piston has a cylindrical limiting portion. When the two spring plates are located within the clearance hole and the piston moves downwards until the lower end face of the limiting portion abuts against the upper end face of the fixed protrusion, the piston and spring plates do not axially abut against each other. The limiting sleeve can limit the lowest position of the piston. Even when the piston's limiting portion abuts against the fixed protrusion and is at its lowest position, the piston will not abut against the spring plates, thus ensuring that the spring plates are not pressed down when located within the clearance hole. This prevents gas from escaping from the gas cylinder when the barrel is not filled, improving reliability.

[0017] In the aforementioned barrel, the upper inner circumferential surface of the limiting sleeve has a limiting flange, and the outer edge of the trigger disc has a cylindrical guide portion. The guide portion is located inside the limiting sleeve, and its outer circumferential surface slides against the inner circumferential surface of the limiting sleeve. Under the action of the air nozzle of the air outlet valve, the upper end surface of the guide sleeve abuts against the lower end surface of the limiting flange. When the spring is located in the clearance hole and the piston moves upward, the abutting portion radially presses against the two springs and generates an upward lifting force on the springs. At this time, the limiting flange can abut against the guide portion to limit the trigger element, thereby allowing the two springs to smoothly disengage from the clearance hole and improving reliability.

[0018] In the aforementioned barrel, the lower end face of the piston has a circumferentially oriented annular groove surrounding the clearance hole. The outer circumferential surface of the fixing part has a radially protruding annular retaining edge that engages within the annular groove. The abutment and the piston are fixedly connected by a snap-fit ​​mechanism, making processing more convenient.

[0019] Compared with existing technologies, this barrel has the following advantages:

[0020] 1. When the barrel is not used for a long time, the spring is in the relief hole for a long time, but the spring is not compressed or deformed. It is in a natural state. It is only momentarily deformed by the abutment when it comes out of the relief hole. This will not cause the spring to age and affect the elasticity. Therefore, it can be opened and reset after it comes out, which is highly reliable.

[0021] 2. Since the abutment part is in the shape of a conical cylinder, when the spring piece disengages from the clearance hole and is located below the abutment part, and the piston moves downward, the abutment part can be inserted between the two spring pieces, thereby spreading the two spring pieces apart. The two spring pieces can slide upward along the outer surface of the abutment part and finally abut against the lower end surface of the fixed part, making the linkage between the piston and the trigger more reliable.

[0022] 3. Because the lower outer circumferential surface of the abutment part has a guide cone surface in the circumferential direction, the lower outer circumferential surface of the abutment part is further reduced in diameter. When the piston moves downward, the abutment part inserts between the two spring pieces and spreads the two spring pieces apart. It gradually inserts between the abutment part and the push part, so that the piston and the trigger can be linked together, improving the reliability of the two abutting. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the barrel.

[0024] Figure 2 yes Figure 1 Enlarged view of the structure at point A in the middle.

[0025] Figure 3 This is a three-dimensional structural diagram of the trigger element.

[0026] Figure 4 This is the working process when the shrapnel is squeezed together and deformed. Figure 1 .

[0027] Figure 5 This is the working process when the spring clip disengages from the clearance hole. Figure 2 .

[0028] Figure 6 This refers to the working process when the piston and trigger element come into contact. Figure 3 .

[0029] In the diagram, 1. Barrel body; 2. Gas cylinder; 21. Cylinder body; 22. Cylinder cap; 23. Piston chamber; 231. Pressure chamber; 232. Balance chamber; 3. Piston; 31. Displacement hole; 32. Limiting part; 33. Annular groove; 34. Sealing ring; 4. Abutment; 41. Fixing part; 42. Abutment; 421. Guide cone surface; 422. Notch; 43. Annular retaining edge; 44. Pushing part; 5. Trigger; 51. Trigger plate; 52. Spring; 53. Clamping hole; 54. Limiting ring; 55. Guide part; 6. Gas valve; 61. Gas nozzle; 62. Sealing gasket; 63. Spring; 7. Limiting sleeve; 71. Fixing flange; 72. Limiting flange; 8. Spear; 9. Bracket; 91. Fixing sleeve. Detailed Implementation

[0030] 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.

[0031] Example 1:

[0032] like Figure 1 As shown, a wine barrel includes a barrel body 1, with a wine spout 8 installed at the opening of the barrel body 1. The wine spout 8 is used to inflate the interior of the barrel body 1 with air and force out the wine. (Combined with...) Figure 2 As shown, a gas cylinder 2 is provided inside the barrel 1. The gas cylinder 2 includes a cylinder body 21 and a cylindrical cap 22. The upper end of the cap 22 is closed, and the lower end is placed on top of the cylinder body 21 and covers the cylinder body, and the two are axially fixed. A bracket 9 is fixed to the inner end of the wine spear 8. The bracket 9 has a cylindrical fixing sleeve 91, which is fitted onto the cap 22, and the two are axially fixed. The inner cavity of the cap 22 is a piston cavity 23. A piston 3 is slidably arranged in the piston cavity 23. A sealing ring 34 is embedded on the outer circumferential surface of the piston 3 and forms a seal with the inner circumferential surface of the piston cavity 23. The piston 3 divides the piston cavity 23 into a pressure cavity 231 located above and a balance cavity 232 located below. The pressure cavity 231 is in a closed state. The balance cavity 232 communicates with the inner cavity of the barrel 1 through the gap between the cap 22 and the cylinder body 21. Since the bottle opening at the upper end of the cylinder body 21 faces the piston 3, it communicates with the balance cavity 232. An exhaust valve 6 is provided inside the bottle mouth of the bottle body 21, and a trigger 5 is provided inside the balance chamber 232. The trigger 5 is located above the exhaust valve 6, and when the trigger 5 descends, it can press down and open the exhaust valve 6. The piston 3 has a downward-facing relief hole 31, and the trigger 5 has two upward-extending and symmetrically arranged spring pieces 52. The two spring pieces 52 extend upward into the relief hole 31, and the two spring pieces 52 are made of plastic. When subjected to radial extrusion force, they can be relatively close together and elastically deformed. After release, they can be radially opened and reset under the action of their own elastic force. A stop 4 is fixed below the opening of the relief hole 31 on the piston 3. The minimum radial distance of the stop 4 from the center line of the relief hole 31 is less than the radius of the relief hole 31. When the spring plate 52 is inside the relief hole 31, the stop 4 is located below the spring plate 52. The minimum radial distance of the stop 4 from the center line of the relief hole 31 is less than the maximum radial distance of the top of the spring plate 52 from the center line of the relief hole 31. When gas is filled into the barrel 1, the pressure in the balance chamber 232 increases and pushes the piston 3 upward. The piston 3 can move upward, causing the spring plate 52 to disengage from the relief hole 31, and the stop 4 is located above the spring plate 52.

[0033] Specifically, the abutment 4 includes an annular fixing part 41 and an abutment part 42 located at the lower end edge of the fixing part 41. The fixing part 41 is snapped and fixed to the piston 3, that is, an annular groove 33 is circumferentially formed on the lower end surface of the piston 3. The annular groove 33 surrounds the relief hole 31 and is co-centered with the relief hole 31. The outer circumferential surface of the fixing part 41 has a radially protruding annular retaining edge 43, which is snapped into the annular groove 33. The fixing part 41 is coaxially arranged with the piston 3, and the inner diameter of the fixing part 41 is the same as the diameter of the relief hole 31. The upper end of the inner hole of the fixing part 41 is aligned and connected with the lower end opening of the relief hole 31. The inner diameter of the fixing part 41 is equal to the diameter of the relief hole 31. The abutment part 42 is conical in shape, with the larger diameter end facing upwards and integrally formed with the fixing part 41, and the smaller diameter end facing downwards. The abutment part 42 and the fixing part 41 are coaxially arranged. The lower end diameter of the abutment part 42 is smaller than the diameter of the relief hole 31, meaning the minimum radial distance between the abutment part 42 and the centerline of the relief hole 31 is less than the radius of the relief hole 31. Figure 3 As shown, the trigger 5 includes a trigger disc 51. The lower ends of two spring pieces 52 are vertically fixed at the center of the trigger disc 51, and the upper ends of both are arc-shaped. The outer surfaces of the upper ends of the two spring pieces 52 are located on the same conical surface with the smaller end facing downwards, and the taper of the conical surface where the outer surfaces of the upper ends of the two spring pieces 52 are located is approximately the same as the taper of the inner surface of the abutment part 42. The maximum outer diameter of the conical surface where the outer surfaces of the upper ends of the two spring pieces 52 are located is smaller than the diameter of the relief hole 31, so that the two spring pieces 52 are in a natural, uncompressed state when they are located in the relief hole 31. The maximum outer diameter of the conical surface where the outer surfaces of the upper ends of the two spring pieces 52 are located is larger than the minimum diameter of the abutment part 42, so that the spring pieces 52 will be subjected to radial compression by the abutment part 42 when they are pushed downwards out of the relief hole 31. The lower outer circumferential surface of the abutment part 42 has a guide cone surface 421, the taper of which is greater than the taper of the outer circumferential surface of the abutment part 42. The outer diameter of the lower end of the guide cone surface 421 is smaller than the radial distance between the inner surfaces of the tops of the two spring pieces 52. The lower end surface of the fixing part 41 has a cylindrical pushing part 44 circumferentially along its lower edge. There is a gap between the pushing part 44 and the abutment part 42. When the spring piece 52 disengages from the relief hole 31 and the piston 3 moves downward, the spring piece 52 can be inserted between the abutment part 42 and the pushing part 44. The lower edge of the abutment part 42 has several notches 422 circumferentially. The lower end cross-section of the spring piece 52 is rectangular and has corners. Therefore, when the spring piece 52 is located in the relief hole 31, it needs to pass upward through the inner hole of the abutment part 42. The notches 422 avoid the corners of the lower end of the spring piece 52.

[0034] The balancing cavity 232 is also provided with a limiting sleeve 7. The lower outer circumferential surface of the limiting sleeve 7 has a fixed protrusion 71 in the circumferential direction, and the inner circumferential surface of the bottle cap 22 has a downward step surface in the circumferential direction. The fixed protrusion 71 of the limiting sleeve 7 is clamped and fixed between the step surface and the bottle body 21. The limiting sleeve 7, the bottle cap 22 and the piston 3 are all coaxially arranged, and there is a gap between the outer circumferential surface of the limiting sleeve 7 and the inner circumferential surface of the balancing cavity 232. The lower edge of the piston 3 has a cylindrical limiting part 32 in the circumferential direction. The limiting part 32 can be inserted downward into the gap between the outer circumferential surface of the limiting sleeve 7 and the inner circumferential surface of the balancing cavity 232. When the two spring pieces 52 are located in the relief hole 31 and the piston 3 moves downward until the lower end surface of the limiting part 32 abuts against the upper end surface of the fixed protrusion 71, the piston 3 and the spring pieces 52 do not abut axially. The upper inner circumferential surface of the limiting sleeve 7 has a limiting protrusion 72, and the outer edge of the trigger disc 51 has a cylindrical guide portion 55. The guide portion 55 is located inside the limiting sleeve 7, and the outer circumferential surface of the guide portion 55 slides with the inner circumferential surface of the limiting sleeve 7. The limiting protrusion 72 is located above the guide portion 55. The air outlet valve 6 includes a valve body fixedly installed inside the bottle mouth. A tubular air nozzle 61 is vertically slidably inserted into the valve body. The lower end of the air nozzle 61 communicates with the inner cavity of the bottle body 21. A sealing gasket 62 is fixed on the outer circumferential surface of the air nozzle 61. The valve body is also provided with a spring 63 that acts upward on the air nozzle 61. Under the action of the spring 63, the sealing gasket 62 abuts against the valve body upward to form a seal, and the upper end of the air nozzle 61 extends upward out of the bottle mouth of the bottle body 21. The trigger plate 51 forms a clamping hole 53 with its lower end penetrating between the two spring pieces 52. The trigger plate 51 also has a limiting ring 54 located above the clamping hole 53. The upper end of the air nozzle 61 passes through the clamping hole 53 and abuts against the lower end surface of the limiting ring 54 under the action of the spring 63. The upper end surface of the guide part 55 abuts against the lower end surface of the limiting flange 72.

[0035] When the barrel 1 is not filled with alcohol, under the pressure in the pressure chamber 231, the limiting part 32 of the piston 3 abuts downward against the fixed protrusion 71 of the limiting sleeve 7, and the two spring pieces 52 are located in the relief hole 31 and are in a natural state. When gas is filled into the barrel 1, the gas pressure inside the barrel 1 increases, that is, the gas pressure in the balance chamber 232 is greater than the gas pressure in the pressure chamber 231, such as... Figure 4 As shown, piston 3 moves upward, while the guide portion 55 of trigger 5 remains stationary due to the limiting protrusion 72 of limiting sleeve 7. The conical cylindrical abutment portion 42 radially presses the two spring pieces 52, causing the two spring pieces 52 to deform and move closer together. Further as... Figure 5As shown, after the two spring pieces 52 are completely disengaged from the clearance hole 31, they are relatively far apart and unfold to reset, thus completing the triggering. When the air pressure inside the barrel 1 drops after the wine is taken out, that is, when the air pressure in the balance chamber 232 is less than the air pressure in the pressure chamber 231, the piston 3 moves downward under the action of the air pressure in the pressure chamber 231, and the abutment part 42 abuts downward against the two spring pieces 52. At the same time, under the action of the guide cone surface 421 of the abutment part 42, the two spring pieces 52 are radially spread open and inserted between the abutment part 42 and the push part 44. Then the piston 3 pushes the trigger 5 downward, and then presses down the air nozzle 61, so that the gas cylinder 2 releases air to replenish the air pressure inside the barrel 1 until the pressure chamber and the balance chamber 232 achieve pressure balance.

[0036] Example 2:

[0037] The structure of the barrel is basically the same as that of Embodiment 1, except that the abutment 4 is fixed on the wall of the relief hole 31, and the abutment 4 is an annular protrusion that radially protrudes from the wall of the relief hole 31.

[0038] 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.

[0039] Although this document frequently uses terms such as "bucket 1," "gas cylinder 2," and "cylinder 21," the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A barrel, comprising a barrel body (1) and a gas cylinder (2) disposed within the barrel body (1), wherein the top of the gas cylinder (2) has a piston chamber (23), and a piston (3) is slidably disposed within the piston chamber (23), the piston (3) dividing the piston chamber (23) into an upper and closed pressure chamber (231) and a lower balance chamber (232) communicating with the inner cavity of the barrel body (1) and the opening of the gas cylinder (2) respectively, wherein an outlet valve (6) is provided in the opening of the gas cylinder (2), and a trigger (5) capable of pressing down and opening the outlet valve (6) is provided in the balance chamber (232), wherein the piston (3) has a downward-facing relief hole (31), and the trigger (5) has at least two elastic pieces (52) extending upward into the relief hole (31) and capable of relatively close and elastically deforming, characterized in that, The piston (3) has a stop (4) fixed on the wall of the relief hole (31) or below the opening of the relief hole (31). The minimum radial distance of the stop (4) from the center line of the relief hole (31) is less than the radius of the relief hole (31). When the spring plate (52) is inside the relief hole (31), the stop (4) is located below the spring plate (52), and the minimum radial distance of the stop (4) from the center line of the relief hole (31) is less than the maximum radial distance of the top of the spring plate (52) from the center line of the relief hole (31). The piston (3) can move upward until the stop (4) is above the spring plate (52).

2. The barrel according to claim 1, characterized in that, The abutment (4) includes a fixed part (41) that is annular and fixed on the piston (3) and an abutment part (42) located at the lower end port edge of the fixed part (41). The fixed part (41) is coaxially arranged with the piston (3), and the upper port of the inner hole of the fixed part (41) is aligned and connected with the lower end opening of the relief hole (31). The inner diameter of the fixed part (41) is equal to or less than the diameter of the relief hole (31). The minimum radial distance of the abutment part (42) from the center line of the relief hole (31) is less than the radius of the relief hole (31).

3. The barrel according to claim 2, characterized in that, The abutment part (42) is conical and cylindrical and is coaxially arranged with the fixing part (41). The end of the abutment part (42) with a smaller diameter faces downward. The lower end of the abutment part (42) has a smaller diameter than the relief hole (31). There are two spring pieces (52). When the two spring pieces (52) are located in the relief hole (31), the maximum radial distance between the tops of the two spring pieces (52) is greater than the lower end of the abutment part (42).

4. The barrel according to claim 3, characterized in that, The lower end of the abutment (42) has a guide cone (421) circumferentially on its outer peripheral surface. The taper of the guide cone (421) is greater than the taper of the outer peripheral surface of the abutment (42). The outer diameter of the lower end of the guide cone (421) is smaller than the radial distance between the inner sides of the top of the two spring pieces (52). The outer edge of the fixing part (41) has a downwardly protruding cylindrical push part (44) circumferentially around the abutment (42).

5. The barrel according to claim 2, 3, or 4, characterized in that, The fixing part (41) is connected to the piston (3) by snap-fit, threaded connection or integral structure.

6. The barrel according to claim 3 or 4, characterized in that, The trigger (5) includes a trigger disk (51), the lower ends of the two spring pieces (52) are vertically fixed at the center of the trigger disk (51), and the upper ends are both arc-shaped. The outer surfaces of the upper ends of the two spring pieces (52) are located on the same cone surface with the small end facing down, and the taper of the cone surface where the outer surfaces of the upper ends of the two spring pieces (52) are located is approximately the same as the taper of the inner surface of the abutment part (42).

7. The barrel according to claim 6, characterized in that, The maximum outer diameter of the conical surface on which the upper outer side of the two spring pieces (52) is located is smaller than the diameter of the relief hole (31), and the maximum outer diameter of the conical surface on which the upper outer side of the two spring pieces (52) is located is larger than the minimum diameter of the abutment part (42).

8. The barrel according to claim 6, characterized in that, The trigger plate (51) forms a clamping hole (53) with its lower end through between the two spring pieces (52). The trigger plate (51) also has a limiting ring (54) located above the clamping hole (53). The gas valve (6) includes a tubular nozzle (61) that extends upward from the mouth of the gas cylinder (2). The upper end of the nozzle (61) passes through the clamping hole (53) and abuts against the lower end face of the limiting ring (54).

9. The barrel according to claim 6, characterized in that, The balance chamber (232) is also provided with a limiting sleeve (7). The lower outer circumferential surface of the limiting sleeve (7) has a fixed protrusion (71) in the circumferential direction. The fixed protrusion (71) is fixed to the gas cylinder (2), and there is a gap between the outer circumferential surface of the limiting sleeve (7) and the inner circumferential surface of the balance chamber (232). The lower edge of the piston (3) has a cylindrical limiting part (32) in the circumferential direction. When the two spring pieces (52) are located in the relief hole (31) and the piston (3) moves downward until the lower end surface of the limiting part (32) abuts against the upper end surface of the fixed protrusion (71), the piston (3) and the spring pieces (52) do not abut axially.

10. The barrel according to claim 9, characterized in that, The upper inner circumferential surface of the limiting sleeve (7) has a limiting protrusion (72) in the circumferential direction, and the outer edge of the trigger disk (51) has a cylindrical guide (55) in the circumferential direction. The guide (55) is located inside the limiting sleeve (7), and the outer circumferential surface of the guide (55) slides with the inner circumferential surface of the limiting sleeve (7). Under the action of the air nozzle (61) of the air outlet valve (6), the upper end surface of the guide (55) abuts against the lower end surface of the limiting protrusion (72).

Images