Differential pressure balancing device for beer barrel

Abstract

The utility model discloses a beer barrel pressure difference balancing device which comprises a bottle cap, a gas cylinder, an activation assembly and a pressure relief switch arranged above the gas cylinder, a plurality of exhaust grooves are formed in the bottom of the bottle cap, the inner sides of the exhaust grooves are open, the activation assembly is located above the pressure relief switch, the activation assembly can trigger the pressure relief switch in an activated state, and the pressure relief switch is connected with the gas cylinder. Automatic pressure supplement is realized; through the cooperation of the activation assembly and the pressure relief switch, manual operation is not needed, convenience and rapidness are achieved, the use efficiency is improved, and the pressure can be automatically adjusted according to the change of the air pressure in the barrel.

Description

Technical Field

[0001] This utility model relates to the field of beer barrel technology, and in particular to a beer barrel pressure differential balancing device. Background Technology

[0002] A beer keg is a container for storing alcoholic beverages. During storage, it's crucial to maintain its purity, ensuring the absence of foreign objects and bacteria, preventing oxygen from entering, and preventing leaks. Therefore, beer kegs typically contain a pressure vessel, a core component that acts as a seal. The pressure vessel, in conjunction with a dispenser or dispensing device, allows for pressurization and depressurization, as well as beer delivery. The beer keg requires internal pressure to facilitate dispensing beer through the dispensing pipe. Kegs are manufactured under pressure and do not require manual pressurization. However, prolonged storage or dispensing can lead to insufficient pressure, preventing beer from being dispensed. In such cases, pressurization is necessary. This invention proposes a beer keg pressure differential balancing device that automatically replenishes pressure, eliminating the need for manual intervention. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a beer barrel pressure differential balancing device.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A pressure differential balancing device for beer kegs includes a bottle cap, a gas cylinder, an activation component, and a pressure relief switch disposed above the gas cylinder. The bottom of the bottle cap has multiple venting slots with open inner sides. The activation component is located above the pressure relief switch. When activated, the activation component can trigger the pressure relief switch to achieve automatic pressure replenishment.

[0006] The following configuration is further provided: the lower inner wall of the bottle cap is connected to the outer wall of the gas cylinder, the inner wall of the bottle cap is provided with an inner groove, and the mouth of the gas cylinder is adapted to and engaged in the inner groove.

[0007] The activation component is further configured as follows: the activation component includes a first piston and an inner core. The first piston is cylindrical with an internal central hole. The outer wall of the first piston slides against the inner wall of the bottle cap. A circular plate is fixed to the inner wall of the first piston. A clearance hole is provided in the center of the circular plate. A hollow first cylinder is provided in the clearance hole. The part of the first cylinder below the clearance hole is an elastic part. The side wall of the elastic part is provided with multiple elastic long grooves with open bottoms. The inner core is slidably disposed inside the first cylinder. The bottom of the inner core is composed of multiple circumferentially uniformly arrayed fan-shaped parts.

[0008] Further configuration: The first piston has the same wall thickness.

[0009] The configuration is further defined as follows: the portion above the first piston and covered by the bottle cap is a compression chamber.

[0010] The following configuration is further provided: the bottom sidewall of the elastic part is provided with a chamfer that slopes upward from the inside out, the bottom surface of the elastic part is provided as a plane, and the lower edge of the fan-shaped part is provided with a chamfer, the chamfer having the same slope as the chamfer of the elastic part.

[0011] The first piston is further configured such that a first sealing groove is provided on the outer side wall of the first piston, and a first sealing ring is provided in the first sealing groove.

[0012] The inner core is further configured such that a second sealing groove is provided on its circumferential surface, and a second sealing ring is provided in the second sealing groove.

[0013] Further configured as follows: the activation component includes a second piston and an elastic claw; the second piston includes a second cylinder located in the middle and hollow inside; a horizontal plate is provided on the circumferential surface of the second cylinder; the height of the lower surface of the horizontal plate is lower than the height of the inner top wall of the second cylinder; a ring is provided on the outer side of the horizontal plate; an outer shell is provided on the circumferential surface of the ring; a cylindrical groove is formed on the outer side of the second cylinder, below the horizontal plate, and on the inner side of the ring; a limiting groove is opened on the inner wall of the bottle cap, and an mounting body is slidably disposed in the limiting groove.

[0014] Further configuration: a plurality of clearance grooves are provided on the circumferential surface of the mounting body in a uniform array around the circumference of the mounting body, and a plurality of bases are provided on the bottom of the lower surface of the second piston, which can pass through the clearance grooves and fall onto the upper surface of the bottle mouth.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] 1. Automatic Pressure Replenishment Function: This invention, through the cooperation of the activation component and the pressure relief switch, eliminates the need for manual operation, making it convenient and efficient. The device can automatically adjust the pressure according to changes in the gas pressure inside the barrel. When the gas pressure inside the barrel is insufficient, the piston moves down to trigger the gas cylinder to release pressure and replenish carbon dioxide gas; when the gas pressure inside the barrel recovers, the piston moves up to stop releasing pressure. This invention requires no manual intervention and automatically adjusts the pressure. Furthermore, through the up and down movement of the piston, the device can automatically replenish or stop replenishing pressure according to changes in the gas pressure inside the barrel. Whether it is the pre-pressurization when the barrel leaves the factory or the need for replenishment due to insufficient pressure during use, the device can automatically adapt. It will only trigger replenishment when the gas pressure inside the barrel is insufficient, avoiding unnecessary gas waste.

[0017] 2. Good sealing performance: The cap and the gas cylinder are fitted together by the groove inside the ring, and sealing rings are set in the first piston and inner core, forming a good sealing structure, which effectively prevents gas leakage and ensures the stability and reliability of the pressurization process.

[0018] 3. Strong structural stability: The first piston is designed with uniform wall thickness, and its upper part forms a compression chamber with the part covered by the bottle cap. This structural design makes the device uniformly stressed and highly stable during operation, and it is not easy to deform or be damaged. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is an overall sectional view of Example 1;

[0021] Figure 2 For along Figure 1 Enlarged schematic diagram of part of the structure

[0022] Figure 3 This is a schematic diagram of the bottle cap in Example 1;

[0023] Figure 4 This is a schematic diagram of the first cylinder in Example 1;

[0024] Figure 5 This is a schematic diagram of the inner core in Example 1;

[0025] Figure 6 This is a schematic diagram showing the initial state of the barrel in Example 1;

[0026] Figure 7 This is a schematic diagram of adding air pressure to the barrel in Example 1;

[0027] Figure 8 This is a schematic diagram of insufficient pressure inside the barrel in Example 1;

[0028] Figure 9 This is a schematic diagram of the inner core popping out in Example 1;

[0029] Figure 10 This is a schematic diagram of the activation component in Example 2;

[0030] Figure 11 This is a schematic diagram of the base in Example 2.

[0031] Reference numerals: 1. Bottle cap; 2. Gas cylinder; 3. Activation component; 4. Pressure relief switch; 5. Inner groove; 6. Exhaust groove; 7. First piston; 8. Inner core; 9. First sealing groove; 10. First sealing ring; 11. Compression chamber; 12. Circular plate; 13. Relief hole; 14. First cylinder; 15. Elastic part; 16. Elastic long groove; 17. Fan-shaped part; 18. Second sealing groove; 19. Second sealing ring; 20. Limiting block; 21. Second piston; 22. Elastic claw; 23. Mounting body; 24. Second cylinder; 25. Horizontal plate; 26. Ring; 27. Outer shell; 28. Cylindrical groove; 29. ​​Limiting groove; 30. Relief groove; 31. Base. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Example 1

[0036] Reference Figures 1-9 The present invention discloses a pressure differential balancing device for beer barrels, comprising a bottle cap 1, a gas cylinder 2, an activation component 3, and a pressure relief switch 4 disposed above the gas cylinder 2.

[0037] Among them, the gas cylinder 2 is a carbon dioxide gas cylinder 2, which is used to replenish the pressure inside the beer barrel. The cap 1 is set as a hollow cylinder with an open lower surface. The lower inner wall of the cap 1 is connected to the outer wall of the gas cylinder 2, and an inner groove 5 is provided on the inner side wall of the cap 1. The inner groove 5 of the gas cylinder 2 is adapted to the bottle mouth of the carbon dioxide gas cylinder 2 and is locked in place.

[0038] Multiple venting slots 6 with open inner sides are provided at the bottom of the bottle cap 1, and the multiple venting slots 6 are evenly distributed around the circumference of the bottle cap 1. The gas pressure released from the carbon dioxide cylinder 2 enters the barrel through the venting slots 6.

[0039] The activation component 3 includes a first piston 7 and an inner core 8. The first piston 7 is a cylindrical shape with an internal central hole. The first piston 7 is vertically slidably connected to the inside of the bottle cap 1, and the outer wall of the first piston 7 slides against the inner wall of the bottle cap 1. A first sealing groove 9 is provided on the outer wall of the first piston 7, and a first sealing ring 10 is provided in the first sealing groove 9 to achieve sealing.

[0040] In this embodiment, the first piston 7 is provided with a wall thickness of equal thickness, and the part above the first piston 7 and covered by the bottle cap 1 is the compression chamber 11.

[0041] A horizontally arranged circular plate 12 is fixed on the inner wall of the first piston 7. A clearance hole 13 is provided in the center of the circular plate 12. A hollow first cylinder 14 is provided in the clearance hole 13. The part of the first cylinder 14 below the clearance hole 13 is an elastic part 15. A plurality of elastic long grooves 16 with open bottoms are provided on the side wall of the elastic part 15.

[0042] The inner core 8 is slidably disposed inside the first cylinder 14;

[0043] In this embodiment, the bottom sidewall of the elastic part 15 is provided with a chamfer that slopes upward from the inside out, the bottom surface of the elastic part 15 is set as a plane, the bottom of the inner core 8 is composed of a plurality of circumferentially uniformly arrayed fan-shaped parts 17, and the lower edge of the fan-shaped parts 17 is provided with a chamfer, which is consistent with the chamfer slope of the elastic part 15.

[0044] In the initial state, the activation component 3 is inactive, and the fan-shaped part 17 is supported by the elastic part 15, thereby closing into the first cylinder 14.

[0045] When the lower surface of the first piston 7 contacts the upper surface of the gas cylinder 2, the sector 17 is located above the pressure relief switch 4, preventing the sector 17 from contacting the pressure relief switch 4 and eliminating the possibility of accidentally activating the pressure relief switch 4.

[0046] A second sealing groove 18 is provided on the circumferential surface of the inner core 8, and a second sealing ring 19 is provided in the second sealing groove 18;

[0047] Furthermore, a limiting block 20 is provided on the inner top of the bottle cap 1, and the limiting block 20 is located on the vertical movement path of the inner core 8.

[0048] In this embodiment, the first sealing ring 10 and the second sealing ring 19 form a sealed area above the first piston 7 and the common area covered by the gas cylinder 2, which is the compression chamber 11 in this embodiment.

[0049] In the initial state of installing the barrel, the fan-shaped portion 17 is supported by the elastic portion 15, thus retracting into the first cylinder 14, and the inner core 8 is positioned above the pressure relief switch 4. The inner core 8 is prevented from downward displacement by the friction between the second sealing ring 19 and the inner wall of the first cylinder 14. (In this state, the positional relationship between the inner core 8, the first piston 7, and the pressure relief switch 4 is as follows...) Figure 6 );

[0050] After the barrel is installed, it needs to be pressurized before leaving the factory. At this time, the pressure inside the barrel is greater than the pressure inside the compression chamber 11. The gas inside the barrel enters the bottle cap 1 through the exhaust channel 6, thereby pushing the first piston 7 upward. The first piston 7 is exerted with an upward force by the pressure inside the barrel, thus moving upward. The space inside the compression chamber 11 gradually decreases, but the pressure gradually increases. During the upward movement of the first piston 7, the inner core 8 installed inside it is also driven to move upward. (In this state, the positional relationship of the inner core 8, the first piston 7, and the pressure relief switch 4 is as follows...) Figure 7 );

[0051] The movement stops when the top of the inner core 8 presses against the limiting block 20 of the bottle cap 1, while the first piston 7 continues to move upward under the action of air pressure. During this process, the multiple elastic parts 15 of the first cylinder 14 are pushed outward by the fan-shaped part 17 of the inner core 8 until the fan-shaped part 17 of the inner core 8 disengages from the first cylinder 14. At this time, the activation component 3 is in the activated state (in this state, the positional relationship of the inner core 8, the first piston 7, and the pressure relief switch 4 is as follows). Figure 8 );

[0052] During the dispensing process, insufficient pressure may occur inside the barrel. In this case, additional pressure needs to be added. Under these conditions, the pressure in the compression chamber 11 is greater than the pressure inside the barrel. The first piston 7 moves the inner core 8 downwards. The inner core 8 continues to descend under the pressure of the compression chamber 11 until it contacts the pressure relief switch 4 of the gas cylinder 2, thus opening the gas cylinder 2. The released pressure from the gas cylinder 2 enters the barrel through the exhaust channel 6, thus replenishing the pressure in the beer barrel. (In this state, the positional relationship of the inner core 8, the first piston 7, and the pressure relief switch 4 is as follows...) Figure 9 );

[0053] When the pressure inside the barrel is equal to or greater than the air pressure in the compression chamber 11, the first piston 7 will be pushed up by the air pressure inside the barrel, thereby disengaging from the pressure relief switch 4, thus completing the automatic pressure replenishment process.

[0054] Example 2

[0055] Reference Figures 10-11 In another embodiment, the activation component 3 includes a second piston 21 and an elastic claw 22. The second piston 21 includes a second cylinder 24 located in the middle and hollow inside. A horizontal plate 25 is provided on the circumferential surface of the second cylinder 24. The height of the lower surface of the horizontal plate 25 is lower than the height of the inner top wall of the second cylinder 24. A ring 26 is provided on the outer side of the horizontal plate 25, and an outer shell 27 is provided on the circumferential surface of the ring 26. A cylindrical groove 28 is formed on the outer side of the second cylinder 24, below the horizontal plate 25, and inside the ring 26. A groove is formed on the inner wall of the bottle cap 1. The limiting groove 29 has a mounting body 23 slidably disposed within it. Multiple clearance grooves 30 are evenly arrayed around the circumference of the mounting body 23 on its circumferential surface. Multiple bases 31 are provided at the bottom of the lower surface of the second piston 21, which can pass through the clearance grooves 30 and fall onto the upper surface of the bottle mouth. In the initial state, the elastic claw 22 is engaged inside the second cylinder 24 and has an elastic force with an opening tendency. The elastic claw 22 is located in the upper part of the second cylinder 24. At this time, the mounting body 23 is located above the pressure relief switch 4.

[0056] When barrels leave the factory, they are usually pressurized. Therefore, the barrels are pressurized before leaving the factory. At this time, the air pressure inside the barrel gradually increases. When it is greater than the pressure above the second piston 21, the air pressure pushes the second piston 21 through the exhaust groove 6, thereby driving the second piston 21 to move upward. During this process, the top of the mounting body 23 abuts against the top of the limiting groove 29, thereby stopping the movement. The elastic claw 22 connected to it also stops moving. The elastic claw 22 gradually disengages from the inside of the second cylinder 24 and falls into the cylindrical groove 28. In this state, the elastic claw 22 has a contraction tendency. Since the elastic claw 22 is locked in the second piston 21, the top of the mounting body 23 still abuts against the top of the limiting groove 29 through the locking elastic force.

[0057] When insufficient pressure occurs inside the barrel during use, the second piston 21 moves downward, causing the elastic claw 22 to move downward. The elastic claw 22 pops out from the second cylinder 24 and locks into the cylindrical groove 28. Since the height of the lower surface of the horizontal plate 25 is lower than the height of the inner top wall of the second cylinder 24, when the second piston 21 moves downward, the horizontal plate 25 will contact the elastic claw 22 before the second cylinder 24. This causes the elastic claw 22 to travel an extra stroke when moving downward (this stroke is the displacement difference between the inner top wall of the second piston 21 and the lower surface of the horizontal plate 25). This extra stroke of the elastic claw 22 makes up for the distance between the mounting body 23 and the pressure relief switch in the initial state, so that the elastic claw 22 can effectively trigger the pressure relief switch 4 to replenish the pressure of the beer barrel.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pressure differential balancing device for beer barrels, characterized in that, It includes a bottle cap (1), a gas cylinder (2), an activation component (3), and a pressure relief switch (4) located above the gas cylinder (2). The bottom of the bottle cap (1) has multiple venting slots (6) with open inner sides. The activation component (3) is located above the pressure relief switch (4). When activated, the activation component (3) can trigger the pressure relief switch (4) to achieve automatic pressure replenishment.

2. The beer barrel pressure differential balancing device according to claim 1, characterized in that, The lower inner wall of the bottle cap (1) is connected to the outer wall of the gas cylinder (2). The inner wall of the bottle cap (1) is provided with an inner groove (5). The mouth of the gas cylinder (2) is adapted to the inner groove (5) and is locked in the inner groove (5).

3. The beer barrel pressure differential balancing device according to claim 1, characterized in that, The activation component (3) includes a first piston (7) and an inner core (8). The first piston (7) is a cylindrical shape with an internal central hole. The outer wall of the first piston (7) slides against the inner wall of the bottle cap (1). A circular plate (12) is fixed on the inner wall of the first piston (7). A clearance hole (13) is provided in the center of the circular plate (12). A hollow first cylinder (14) is provided in the clearance hole (13). The part of the first cylinder (14) below the clearance hole (13) is an elastic part (15). The side wall of the elastic part (15) is provided with multiple elastic long grooves (16) with open bottoms. The inner core (8) is slidably disposed inside the first cylinder (14). The bottom of the inner core (8) is composed of multiple fan-shaped parts (17) arranged in a uniform circumferential array.

4. The beer barrel pressure differential balancing device according to claim 3, characterized in that, The first piston (7) has a wall thickness of equal thickness.

5. The beer barrel pressure differential balancing device according to claim 3, characterized in that, The portion above the first piston (7) and covered by the bottle cap (1) is a compression chamber (11).

6. The beer barrel pressure differential balancing device according to claim 3, characterized in that, The bottom sidewall of the elastic part (15) is provided with a chamfer that slopes upward from the inside out. The bottom surface of the elastic part (15) is set as a plane. The lower edge of the fan-shaped part (17) is provided with a chamfer, and the chamfer slope is consistent with that of the chamfer of the elastic part (15).

7. A beer barrel pressure differential balancing device according to claim 3, characterized in that, The first piston (7) has a first sealing groove (9) on its outer side wall, and a first sealing ring (10) is provided in the first sealing groove (9).

8. A beer barrel pressure differential balancing device according to claim 3, characterized in that, The inner core (8) has a second sealing groove (18) on its circumferential surface, and a second sealing ring (19) is provided in the second sealing groove (18).

9. A beer barrel pressure differential balancing device according to claim 1, characterized in that, The activation component (3) includes a second piston (21) and an elastic claw (22). The second piston (21) includes a second cylinder (24) located in the middle and hollow inside. A horizontal plate (25) is provided on the circumferential surface of the second cylinder (24). The height of the lower surface of the horizontal plate (25) is lower than the height of the inner top wall of the second cylinder (24). A ring (26) is provided on the outer side of the horizontal plate (25). A shell sleeve (27) is provided on the circumferential surface of the ring (26). A cylindrical groove (28) is formed on the outer side of the second cylinder (24), below the horizontal plate (25), and inside the ring (26). A limiting groove (29) is opened on the inner wall of the bottle cap (1). An mounting body (23) is slidably provided in the limiting groove (29).

10. A beer barrel pressure differential balancing device according to claim 9, characterized in that, Multiple clearance grooves (30) are uniformly arranged around the circumference of the mounting body (23) on the circumferential surface, and multiple bases (31) that can pass through the clearance grooves (30) and fall onto the upper surface of the bottle mouth are provided on the bottom of the lower surface of the second piston (21).

Images