Device for automatically supplementing air pressure

Abstract

The invention discloses an automatic air pressure supplementing device which comprises an aerosol can, a bottle cap and a valve rod, the aerosol can is opened when the valve rod moves downwards, the aerosol can is closed when the valve rod moves upwards, a piston and a valve seat which are located above the valve rod are arranged in the bottle cap, and a lever switch and an elastic torsion mechanism driving the lever switch to rotate are rotationally connected to the valve seat. A boss is arranged on the lever switch and abuts against the side face of the valve rod under the action of an elastic torsion mechanism, and a positive pressure chamber for providing downward pressure for the piston when the piston moves upwards is arranged in the bottle cap. The bottle cap is communicated with the outer side, high-pressure fluid on the outer side can enter the bottle cap and acts downwards to push the piston and the valve seat upwards so as to drive the lever switch to move upwards to enable the boss to be separated from the side face of the valve rod, and the boss rotates to the position above the valve rod under the action of the elastic torsion mechanism. The piston and the valve seat are pressed on the valve rod through the boss to push the valve rod to move downwards to open the aerosol can for air supply.

Description

[Technical field]

[0001] The invention relates to a device for automatically replenishing air pressure. [Background technology]

[0002] At present, the storage and use of some solutions in the market, such as wine, are usually filled in barrels. The liquid is pressed out by the high-pressure gas in the barrel. During use, the air pressure in the barrel will continue to drop as the liquid flows out. The liquid will easily flow out unsmoothly due to insufficient pressure in the barrel. Therefore, it is necessary to replenish air according to the air pressure in the barrel. The present invention is made based on this situation. [Summary of the invention]

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a device for automatically replenishing air pressure, which has a simple structure, can automatically replenish air according to external pressure conditions, and is stable and reliable to use.

[0004] The present invention is achieved through the following technical solutions:

[0005] A device for automatically replenishing air pressure, comprising an aerosol can, a bottle cap is provided on the aerosol can, a valve stem is provided on the aerosol can for opening the aerosol can when moving downward to allow the high-pressure gas in the aerosol can to be sprayed out and for closing the aerosol can when moving upward, a piston is provided in the bottle cap, a valve seat is fixed on the piston, the piston and the valve seat are located above the valve stem, a lever switch is rotatably connected to the valve seat, an elastic torsion mechanism is provided on the lever switch for driving the lever switch to rotate, a boss is provided on the lever switch, the boss is pressed against the side of the valve stem under the action of the elastic torsion mechanism, and the bottle cap is provided. A positive pressure chamber is provided above the piston for the piston to move upward and to provide downward pressure to the piston when the piston moves upward. The bottle cap is connected to the outside and allows the high-pressure fluid on the outside to enter the bottle cap and push the piston and the valve seat upward from the bottom to drive the lever switch to move upward so that the boss is separated from the side of the valve stem. After the boss is separated from the side of the valve stem, it rotates under the action of the elastic torsion mechanism so that the boss rotates to the top of the valve stem. When the fluid pressure on the outside of the bottle cap decreases and is less than the pressure in the positive pressure chamber, the piston and the valve seat move downward and press on the valve stem through the boss to push the valve stem to move downward to open the aerosol can.

[0006] An automatic air pressure replenishing device as described above, the aerosol can includes a bottle can, a valve chamber is fixed at the bottle mouth of the bottle can through a sealing cup, the valve stem is arranged in the valve chamber, a sealing gasket is arranged at the upper end of the valve chamber to seal the valve chamber from above, the upper end of the valve stem passes through the sealing gasket and is exposed above the sealing gasket, the valve stem is sealed and connected with the sealing gasket, an air hole is arranged on the side of the valve stem, an inner channel is arranged on the valve stem to connect the air hole with the outside of the bottle can, and a first spring is arranged in the valve chamber to elastically press the valve stem upward so that the air hole is sealed by the sealing gasket.

[0007] In the automatic air pressure replenishing device as described above, the aerosol can is provided with activated carbon and carbon dioxide or inert gas that can be adsorbed by the activated carbon, and a filter rod is provided at the lower inlet of the valve chamber.

[0008] In a device for automatically replenishing air pressure as described above, the valve seat is provided with a sleeve sleeved on the outside of the valve stem, the lever switch is provided with a rotating shaft, the lever switch includes a first end and a second end located on both sides of its rotating shaft, the bottle cap is provided with an extension port for the first end to extend out and for the first end to move up and down, the valve seat is provided with a first limiting portion and a second limiting portion for limiting the range of movement of the second end, when the lever switch is rotated to make the first end move upward, the boss is rotated to the side of the valve stem, and the first limiting portion is used to limit the second end from moving downward; when the lever switch is rotated to make the first end move downward, the boss is rotated to the top of the valve stem, and the second limiting portion is used to limit the second end from moving upward and limit the boss to the top of the valve stem; when the boss is located above the valve stem, the boss and the first end are respectively located on both sides of the rotating shaft.

[0009] In the device for automatically replenishing air pressure as described above, the elastic torsion mechanism is a torsion spring installed between the lever switch and the valve seat.

[0010] In the device for automatically replenishing air pressure as described above, the elastic torsion mechanism is a bow-shaped plastic spring integrally formed on the lever switch, one end of the plastic spring is connected to the first end, and the other end is connected to the valve seat.

[0011] In the device for automatically replenishing air pressure as described above, two opposite suspension plates protrude from the side of the sleeve, the lever switch is clamped between the two suspension plates, a rotating hole with a narrowed side inlet is provided on the suspension plate, and the rotating shaft is installed in the rotating hole.

[0012] In the device for automatically replenishing air pressure as described above, a sealing ring which is sealed with the inner wall of the bottle cap is provided on the piston, and a sealing ring which is sealed with the inner wall of the bottle cap is also connected to the piston, so that the positive pressure chamber forms a sealed space, and high-pressure gas is compressed in the positive pressure chamber. When the positive pressure chamber shrinks, the gas inside it is compressed to form a downward pressure acting on the piston.

[0013] In the device for automatically replenishing air pressure as described above, a second spring is arranged in the positive pressure chamber to elastically press the piston downward.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. The automatic air pressure replenishing device of the present invention can be placed inside a high-pressure external container for use, the bottle cap is connected to the outside so that the high-pressure fluid on the outside can enter the bottle cap from below to push the piston and the valve seat upward, thereby driving the lever switch to move upward so that the boss is separated from the side of the valve stem. After the boss is separated from the side of the valve stem, it rotates under the action of the elastic torsion mechanism so that the boss rotates to the top of the valve stem. When the fluid pressure on the outside of the bottle cap decreases and is less than the pressure in the positive pressure chamber, under the action of the pressure in the positive pressure chamber, the piston and the valve seat move downward and press on the valve stem through the boss to push the valve stem to move downward, opening the aerosol can and replenishing air pressure to the container on the outside.

[0016] 2. When the piston and the valve seat push the valve stem to move downward together, the pressure in the positive pressure chamber becomes smaller, the first spring is compressed and the elastic force increases, and the aerosol can continuously replenishes air pressure into the external container to increase the fluid pressure in the external container continuously. When the fluid pressure in the external container recovers to a certain value and the upward force of the first spring is greater than the pressure in the positive pressure chamber, the piston, the valve seat, the lever switch and the valve stem move upward at the same time, and the aerosol can is closed; when the pressure in the external container decreases again, under the action of the pressure in the positive pressure chamber, the piston and the valve seat move downward and press on the valve stem through the boss to push the valve stem downward to reopen the aerosol can, replenishing air pressure into the container outside, and repeating this process to keep the external container with a stable air pressure during continuous use.

[0017] 3. In the present invention, the bottle cap is provided with an extension opening for the first end to extend out and move up and down, so that when installing, by pushing the first end extending out of the bottle cap to move upward, the lever switch is rotated until the second end is pressed on the first limit part. At this time, the position of the boss is located on the side of the valve stem after installation, so the valve stem is avoided so that the valve stem can be inserted upward into the sleeve. When the piston and the valve seat move upward and drive the lever switch to move upward to make the boss separate from the side of the valve stem, the lever switch rotates under the action of the elastic torsion mechanism until the second end is pressed on the second limit part. At this time, the boss rotates to the top of the valve stem, and the boss is limited to the top of the upper end of the valve stem, so that when the piston, the valve seat and the lever switch move downward, the boss can better press on the valve stem to push the valve stem to move downward. The structure is simple and the use is stable and reliable.

Brief Description of the Drawings

[0018] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0019] Figure 1 is a three-dimensional diagram of a device for automatically replenishing air pressure according to the present invention;

[0020] Figure 2 is a cross-sectional view of a device for automatically replenishing air pressure according to the present invention;

[0021] Figure 3It is a schematic diagram of the structure of the lever switch of the present invention pressed on the side of the valve stem;

[0022] Figure 4 It is a schematic diagram of the structure in which the upper boss of the lever switch of the present invention is pressed on the upper end of the valve stem;

[0023] Figure 5 This is a schematic diagram of the installation of the valve stem into the sleeve;

[0024] Figure 6 It is a structural schematic diagram of the lever switch and the valve seat of the present invention;

[0025] Figure 7 It is a structural schematic diagram of an embodiment of the elastic torsion mechanism of the present invention using a plastic spring. [Specific implementation method]

[0026] The present invention will be further described below in conjunction with the accompanying drawings:

[0027] like Figures 1 to 7 As shown, a device for automatically replenishing air pressure includes an aerosol can 1, a bottle cap 2 is provided on the aerosol can 1, a valve stem 3 is provided on the aerosol can 1 for opening the aerosol can 1 when moving downward to allow the high-pressure gas in the aerosol can 1 to be ejected and a valve stem 3 is closed when moving upward, a piston 4 is provided in the bottle cap 2, a valve seat 5 is fixed on the piston 4, the piston 4 and the valve seat 5 are located above the valve stem 3, a lever switch 6 is rotatably connected to the valve seat 5, an elastic torsion mechanism for driving the lever switch 6 to rotate is provided on the lever switch 6, a boss 63 is provided on the lever switch 6, and the boss 63 is pressed against the side of the valve stem 3 under the action of the elastic torsion mechanism, as shown in FIG. Figure 3 As shown, a positive pressure chamber 20 is provided above the piston 4 in the bottle cap 2 for the piston 4 to move upward and to provide downward pressure to the piston 4 when the piston 4 moves upward. The automatic air pressure replenishing device is placed inside the high-pressure external container when in use. The bottle cap 2 is connected to the outside and allows the high-pressure fluid on the outside to enter the bottle cap 2 to push the piston 4 and the valve seat 5 upward from the bottom, thereby driving the lever switch 6 to move upward and disengage the boss 63 from the side of the valve stem 3. After the boss 63 is disengaged from the side of the valve stem 3, it rotates under the action of the elastic torsion mechanism so that the boss 63 rotates to the top of the valve stem 3, as shown in FIG. Figure 2 As shown, when the fluid pressure outside the bottle cap 2 decreases and is less than the pressure in the positive pressure chamber 20, under the pressure in the positive pressure chamber 20, the piston 4 and the valve seat 5 move downward and press on the valve stem 3 through the boss 63 to push the valve stem 3 downward, thereby opening the aerosol can 1 and replenishing air pressure into the container outside.

[0028] Furthermore, the aerosol can 1 includes a bottle can 11, a valve chamber 13 is fixed at the bottle mouth of the bottle can 11 through a sealing cup 12, the valve stem 3 is arranged in the valve chamber 13, the upper end of the valve chamber 13 is provided with a sealing gasket 14 that seals the valve chamber 13 from above, the upper end of the valve stem 3 passes through the sealing gasket 14 and is exposed above the sealing gasket 14, the valve stem 3 is sealed and connected to the sealing gasket 14, an air hole 31 is provided on the side of the valve stem 3, an inner channel 32 that connects the air hole 31 with the outside of the bottle can 11 is provided on the valve stem 3, and a first spring 15 that elastically presses the valve stem 3 upward so that the air hole 31 is sealed by the sealing gasket 14 is provided in the valve chamber 13.

[0029] When the pressure in the external container decreases and the pressure below the piston is less than the pressure in the positive pressure chamber, the piston and the valve seat push the valve stem to move downward together, so that the air hole is separated from the seal of the sealing gasket and connected to the inner channel and the valve chamber, so that the high-pressure gas in the aerosol can is sprayed out to supplement the air pressure in the external container; when the piston 4 and the valve seat 5 push the valve stem 3 to move downward together, the pressure in the positive pressure chamber 20 decreases, the first spring 15 is compressed and the elastic force increases, and the aerosol can continuously replenishes the air pressure to the external container to continuously increase the fluid pressure in the external container. When the fluid pressure in the external container recovers to a certain value and the upward force of the first spring 15 is greater than the pressure in the positive pressure chamber 20, the piston 4, the valve seat 5, the lever switch 6 and the valve stem 3 move upward at the same time, and the aerosol can is closed; when the pressure in the external container decreases again, under the action of the pressure in the positive pressure chamber 20, the piston 4 and the valve seat 5 move downward and press on the valve stem 3 through the boss 63 to push the valve stem 3 to move downward to reopen the aerosol can 1, and replenish the air pressure to the container outside, and so on.

[0030] Preferably, the valve seat 5 is provided with a sleeve 51 sleeved on the outside of the valve stem 3, the lever switch 6 is provided with a rotating shaft 60, and the lever switch 6 includes a first end 61 and a second end 62 located on both sides of the rotating shaft 60, the bottle cap 2 is provided with an extension port 21 for the first end 61 to extend and for the first end 61 to move up and down, and the valve seat 5 is provided with a first limit portion 52 and a second limit portion 53 for limiting the range of movement of the second end 62. When the lever switch 6 is rotated to make the first end 61 move upward, the boss 63 rotates to the side of the valve stem 3. The first limiting portion 52 is used to limit the second end 62 from moving downward; when the lever switch 6 is rotated to make the first end 61 move downward, the boss 63 rotates to the top of the valve stem 3, and the second limiting portion 53 is used to limit the second end 62 from moving upward and confine the boss 63 above the valve stem 3; when the boss 63 is located above the valve stem 3, the boss 63 and the first end 61 are respectively located on both sides of the rotating shaft 60, so that when the valve seat 5 moves downward with the lever switch 6, the boss 63 is stably pressed on the valve stem 3 and moves downward together.

[0031] like Figure 5As shown, during installation, by pushing the first end 61 extending outward from the bottle cap 2 to move upward, the lever switch 6 is rotated until the second end 62 is pressed on the first limit portion 52. At this time, the position where the boss 63 is rotated is located on the side of the valve stem 3 after installation, so the valve stem 3 is avoided so that the valve stem 3 can be inserted upward into the sleeve 51. When the piston 4 and the valve seat 5 move upward and drive the lever switch 6 to move upward to make the boss 63 separate from the side of the valve stem 3, the lever switch 6 rotates under the action of the elastic torsion mechanism until the second end 62 is pressed on the second limit portion 53. At this time, the boss 63 rotates to the top of the valve stem 3, and the boss 63 is limited to the top of the upper end of the valve stem 3, so that when the piston 4, the valve seat 5 and the lever switch 6 move downward, the boss 63 can better press on the valve stem 3 to push the valve stem 3 to move downward. The structure is simple and the use is stable and reliable.

[0032] like Figure 2-6 The embodiment shown in the figure is one of the embodiments of the elastic torsion mechanism, and the elastic torsion mechanism is a torsion spring 7 installed between the lever switch 6 and the valve seat 5. Of course, it can also be as follows Figure 7 As shown, the elastic torsion mechanism is a bow-shaped plastic spring 64 integrally formed on the lever switch 6, one end of the plastic spring 64 is connected to the first end 61, and the other end is connected to the valve seat 5. The bow-shaped plastic spring 64 is easily bent to provide elastic force to the first end 61.

[0033] Preferably, if Figure 6 As shown, two opposite hanging plates 54 protrude from the side of the sleeve 51, and the lever switch 6 is clamped between the two hanging plates 54. A rotating hole 55 with a narrowed side entrance 56 is provided on the hanging plate 54, and the rotating shaft 60 is installed in the rotating hole 55. The narrowed side entrance 56 allows the rotating shaft 60 to squeeze into the rotating hole 55 laterally and then blocks the rotating shaft 60 from escaping from the rotating hole 55. The lever switch 6 is easy to install and disassemble, and the lever switch 6 is stable and reliable after installation.

[0034] like Figure 2 As shown, the piston 4 is provided with a sealing ring 41 which is sealed with the inner wall of the bottle cap 2, and the piston 4 is also connected with a sealing ring 42 which is sealed with the inner wall of the bottle cap 2, so that the positive pressure chamber 20 forms a sealed space, and high-pressure gas is compressed in the positive pressure chamber 20. When the positive pressure chamber 20 is reduced, the gas inside is compressed to form a downward pressure acting on the piston 4. Of course, as another embodiment, Figure 4 As shown, a second spring 8 is provided in the positive pressure chamber 20 to elastically press the piston 4 downward.

[0035] The aerosol can 1 is provided with activated carbon 10 and a gas such as carbon dioxide or other inert gas that can be adsorbed by the activated carbon 10. In order to filter impurities, a filter rod 16 is provided at the lower entrance of the valve chamber 13.

Claims

1. A device for automatically replenishing air pressure, characterized in that: The invention comprises an aerosol can (1), wherein a bottle cap (2) is provided on the aerosol can (1), wherein a valve stem (3) is provided on the aerosol can (1) for opening the aerosol can (1) when moving downwards to allow high-pressure gas in the aerosol can (1) to be ejected and closing the aerosol can (1) when moving upwards, wherein a piston (4) is provided in the bottle cap (2), wherein a valve seat (5) is fixed on the piston (4), wherein the piston (4) and the valve seat (5) are located above the valve stem (3), wherein a lever switch (6) is rotatably connected to the valve seat (5), wherein an elastic torsion mechanism for driving the lever switch (6) to rotate is provided on the lever switch (6), wherein a boss (63) is provided on the lever switch (6), wherein the boss (63) is pressed against the side surface of the valve stem (3) under the action of the elastic torsion mechanism, wherein the piston (4) is located in the bottle cap (2) and the boss (63) is pressed against the side surface of the valve stem (3) A positive pressure chamber (20) is provided above the bottle cap (2) for the piston (4) to move upward and for providing downward pressure to the piston (4) when the piston (4) moves upward. The bottle cap (2) is connected to the outside so that the high-pressure fluid on the outside can enter the bottle cap (2) from below to push the piston (4) and the valve seat (5) upward, thereby driving the lever switch (6) to move upward so that the boss (63) is separated from the side of the valve stem (3). After the boss (63) is separated from the side of the valve stem (3), it rotates under the action of the elastic torsion mechanism so that the boss (63) rotates to the top of the valve stem (3). When the fluid pressure on the outside of the bottle cap (2) decreases and is less than the pressure in the positive pressure chamber (20), the piston (4) and the valve seat (5) move downward and press on the valve stem (3) through the boss (63) to push the valve stem (3) to move downward, thereby opening the aerosol can (1).

2. The device for automatically replenishing air pressure according to claim 1, characterized in that: The aerosol can (1) comprises a bottle (11), a valve chamber (13) is fixed at the bottle mouth of the bottle (11) through a sealing cup (12), the valve stem (3) is arranged in the valve chamber (13), a sealing gasket (14) is arranged at the upper end of the valve chamber (13) for sealing the valve chamber (13), the upper end of the valve stem (3) passes through the sealing gasket (14) and is exposed above the sealing gasket (14), the valve stem (3) is sealedly connected to the sealing gasket (14), an air hole (31) is arranged on the side of the valve stem (3), an inner channel (32) is arranged on the valve stem (3) for connecting the air hole (31) with the outer side of the bottle (11), and a first spring (15) is arranged in the valve chamber (13) for elastically pressing the valve stem (3) upward so that the air hole (31) is sealed by the sealing gasket (14).

3. The device for automatically replenishing air pressure according to claim 2, characterized in that: The aerosol can (1) is provided with activated carbon (10) and carbon dioxide or inert gas that can be adsorbed by the activated carbon (10), and a filter rod (16) is provided at the lower entrance of the valve chamber (13).

4. A device for automatically replenishing air pressure according to any one of claims 1 to 3, characterized in that: The valve seat (5) is provided with a sleeve (51) sleeved on the outside of the valve stem (3); the lever switch (6) is provided with a rotating shaft (60); the lever switch (6) comprises a first end (61) and a second end (62) located on both sides of the rotating shaft (60); the bottle cap (2) is provided with an extension opening (21) for the first end (61) to extend out and for the first end (61) to move up and down; the valve seat (5) is provided with a first limiting portion (52) and a second limiting portion (53) for limiting the range of movement of the second end (62); when the lever switch (6) is rotated to move the first end (61) up and down, the valve seat (5) is provided with a first limiting portion (52) and a second limiting portion (53) for limiting the range of movement of the second end (62); When the lever switch (6) is rotated to make the first end (61) move downward, the boss (63) rotates to the upper part of the valve stem (3), and the second limiting portion (53) is used to limit the upward movement of the second end (62) and confine the boss (63) above the valve stem (3); when the boss (63) is located above the valve stem (3), the boss (63) and the first end (61) are respectively located on both sides of the rotating shaft (60).

5. The device for automatically replenishing air pressure according to claim 4, characterized in that: The elastic torsion mechanism is a torsion spring (7) installed between the lever switch (6) and the valve seat (5).

6. The device for automatically replenishing air pressure according to claim 4, characterized in that: The elastic torsion mechanism is a bow-shaped plastic spring (64) integrally formed on the lever switch (6); one end of the plastic spring (64) is connected to the first end (61), and the other end is connected to the valve seat (5).

7. The device for automatically replenishing air pressure according to claim 4, characterized in that: Two opposing suspension plates (54) protrude from the side of the sleeve (51), the lever switch (6) is clamped between the two suspension plates (54), a rotation hole (55) having a narrowed side inlet (56) is provided on the suspension plate (54), and the rotation shaft (60) is installed in the rotation hole (55).

8. A device for automatically replenishing air pressure according to any one of claims 1 to 3, characterized in that: The piston (4) is provided with a sealing ring (41) which is sealedly connected to the inner wall of the bottle cap (2), and the piston (4) is also connected to a sealing ring (42) which is sealedly connected to the inner wall of the bottle cap (2), so that the positive pressure chamber (20) forms a sealed space. High-pressure gas is compressed in the positive pressure chamber (20). When the positive pressure chamber (20) shrinks, the gas inside it is compressed to form a downward pressure acting on the piston (4).

9. A device for automatically replenishing air pressure according to any one of claims 1 to 3, characterized in that: A second spring (8) is provided in the positive pressure chamber (20) to elastically press the piston (4) downward.

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