Device for supplementing air pressure

Abstract

The utility model discloses a device for supplementing air pressure, 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 positioned above the valve rod are arranged in the bottle cap, and a lever switch and an elastic torsion mechanism for driving the lever switch to rotate are rotatably connected onto 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] This utility model relates to a device for replenishing air pressure. [Background Technology]

[0002] Currently, the storage and use of some solutions on the market, such as the storage of wine, usually involves filling them into barrels, where the liquid is forced out by high-pressure gas inside the barrel. During use, as the liquid flows out, the gas pressure inside the barrel will continuously decrease. Due to insufficient pressure inside the barrel, the liquid may not flow smoothly. Therefore, it is necessary to replenish gas according to the gas pressure inside the barrel. This utility model is based on this situation. [Utility Model Content]

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

[0004] This utility model is achieved through the following technical solution:

[0005] A device for replenishing air pressure includes an aerosol can with a cap. The aerosol can has a valve stem that opens when moving downwards to release high-pressure gas and closes when moving upwards. A piston is located inside the cap, and a valve seat is fixed to the piston. The piston and valve seat are positioned above the valve stem. A lever switch is rotatably connected to the valve seat. The lever switch has an elastic torsion mechanism that drives its rotation. A boss on the lever switch presses against the side of the valve stem under the action of the elastic torsion mechanism. A positive pressure chamber is located above the piston, allowing the piston to move upward and providing downward pressure to the piston when it moves upward. The bottle cap is connected to the outside, allowing the high-pressure fluid from the outside to enter the bottle cap and push the piston and valve seat upward from below, causing the lever switch to move upward and disengage the boss from the side of the valve stem. After the boss disengages from the side of the valve stem, it rotates under the action of the elastic torsion mechanism, causing the boss to rotate to the top of the valve stem. When the fluid pressure outside the bottle cap decreases and is less than the pressure in the positive pressure chamber, the piston and valve seat move downward and, through the boss pressing on the valve stem, push the valve stem downward, opening the aerosol can.

[0006] As described above, a device for supplementing air pressure includes an aerosol can containing a bottle. A valve chamber is fixed to the bottle opening by a sealing cup. A valve stem is disposed in the valve chamber. A sealing gasket is provided 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 protrudes above it. The valve stem is sealed to the sealing gasket. An air hole is provided on the side of the valve stem. An internal channel is provided on the valve stem to connect the air hole to the outside of the bottle. A first spring is provided in the valve chamber to elastically press the valve stem upward so that the air hole is sealed by the sealing gasket.

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

[0008] As described above, in a device for replenishing air pressure, the valve seat has a sleeve fitted over the outside of the valve stem, the lever switch has 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 has an extension opening for the first end to extend and move up and down, and the valve seat has a first limiting part and a second limiting part for limiting the range of motion of the second end. When the lever switch rotates to move the first end upward, the boss rotates to the side of the valve stem, and the first limiting part is used to limit the downward movement of the second end; when the lever switch rotates to move the first end downward, the boss rotates above the valve stem, and the second limiting part is used to limit the upward movement of the second end and confine the boss above the valve stem; when the boss is 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 replenishing air pressure as described above, the elastic torsion mechanism is a torsion spring installed between the lever switch and the valve seat.

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

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

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

[0013] As described above, in a device for replenishing air pressure, a second spring is provided 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 replenishment device of this utility model can be placed inside a high-pressure external container. The bottle cap is connected to the outside, allowing the high-pressure fluid from the outside to enter the bottle cap and push the piston and valve seat upward from below, thereby moving the lever switch upward and causing the boss to disengage from the side of the valve stem. After the boss disengages from the side of the valve stem, it rotates under the action of the elastic torsion mechanism, causing the boss to rotate above the valve stem. When the fluid pressure outside the bottle cap decreases and is less than the pressure of the positive pressure chamber, under the action of the positive pressure chamber pressure, the piston and valve seat move downward and, through the boss pressing on the valve stem, push the valve stem downward, opening the aerosol can and replenishing air pressure to the external container.

[0016] 2. When the piston and valve seat push the valve stem downwards together, the pressure in the positive pressure chamber decreases, the first spring is compressed and its elastic force increases, and the aerosol can continuously replenishes air pressure to the external container, causing the fluid pressure in the external container to continuously increase. 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, valve seat, lever switch and valve stem move upwards simultaneously, and the aerosol can closes. When the pressure in the external container decreases again, under the action of the pressure in the positive pressure chamber, the piston and valve seat move downwards and press against the valve stem through the boss, pushing the valve stem downwards to reopen the aerosol can, replenishing air pressure to the external container. This process is repeated to maintain a stable air pressure in the external container during continuous use.

[0017] 3. In this utility model, the bottle cap is provided with an extension opening for the first end to extend and move up and down. During installation, by pushing the first end extending outwards from the bottle cap upwards, the lever switch rotates until the second end presses against the first limiting part. At this point, the boss rotates to the side position of the valve stem after installation, thus avoiding the valve stem and allowing it to be inserted into the sleeve upwards. When the piston and valve seat move upwards, causing the lever switch to move upwards and disengage the boss from the side of the valve stem, the lever switch rotates under the action of the elastic torsion mechanism until the second end presses against the second limiting part. At this point, the boss rotates to above the valve stem, limiting the boss to directly above the upper end of the valve stem. This allows the boss to better press against the valve stem and push it downwards when the piston, valve seat, and lever switch move downwards. The structure is simple, and the operation is stable and reliable. [Attached Image Description]

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a perspective view of a device for supplementing air pressure according to the present invention;

[0020] Figure 2 This is a cross-sectional view of a device for supplementing air pressure according to this utility model;

[0021] Figure 3This is a schematic diagram of the lever switch of this utility model pressed against the side of the valve stem;

[0022] Figure 4 This is a schematic diagram of the structure of the lever switch of this utility model, in which the upper boss presses against the upper end of the valve stem;

[0023] Figure 5 This is a schematic diagram of the valve stem being inserted into the sleeve.

[0024] Figure 6 This is a schematic diagram of the lever switch and valve seat of this utility model;

[0025] Figure 7 This is a schematic diagram of an embodiment of the elastic torsion mechanism of this utility model that uses a plastic spring.

Detailed Implementation Methods

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

[0027] like Figures 1 to 7 As shown, a device for replenishing air pressure includes an aerosol can 1 with a cap 2. The aerosol can 1 has a valve stem 3 that opens when moving downwards to allow high-pressure gas to be expelled and closes when moving upwards. A piston 4 is located inside the cap 2, and a valve seat 5 is fixed to the piston 4. The piston 4 and valve seat 5 are located above the valve stem 3. A lever switch 6 is rotatably connected to the valve seat 5. The lever switch 6 has an elastic torsion mechanism that drives its rotation. The lever switch 6 has a boss 63 that presses against the side of the valve stem 3 under the action of the elastic torsion mechanism. Figure 3 As shown, the bottle cap 2 has a positive pressure chamber 20 located above the piston 4, which allows the piston 4 to move upward and provides downward pressure to the piston 4 when it moves upward. This automatic pressure replenishment device is placed inside the high-pressure external container during use. The bottle cap 2 is connected to the outside, allowing the high-pressure fluid from the outside to enter the bottle cap 2. From below, this pushes the piston 4 and valve seat 5 upward, causing the lever switch 6 to move upward, disengaging the boss 63 from the side of the valve stem 3. After disengaging from the side of the valve stem 3, the boss 63 rotates under the action of the elastic torsion mechanism, causing the boss 63 to rotate above the valve stem 3. Figure 2 As shown, when the fluid pressure outside the bottle cap 2 decreases and is less than the pressure of the positive pressure chamber 20, under the pressure of the positive pressure chamber 20, the piston 4 and valve seat 5 move downward and press against the valve stem 3 through the boss 63, pushing the valve stem 3 to move downward, thus opening the aerosol can 1 and replenishing the air pressure to the outer container.

[0028] Furthermore, the aerosol can 1 includes a bottle 11, and a valve chamber 13 is fixed at the bottle opening of the bottle 11 by a sealing cup 12. The valve stem 3 is disposed in the valve chamber 13, and a sealing gasket 14 is provided at the upper end of the valve chamber 13 to seal the valve chamber 13 from above. The upper end of the valve stem 3 passes through the sealing gasket 14 and protrudes above the sealing gasket 14. The valve stem 3 is sealed to the sealing gasket 14. An air hole 31 is provided on the side of the valve stem 3. An inner channel 32 is provided on the valve stem 3 to connect the air hole 31 with the outside of the bottle 11. A first spring 15 is provided in the valve chamber 13 to elastically press the valve stem 3 upward so that the air hole 31 is sealed by the sealing gasket 14.

[0029] When the pressure in the external container decreases, causing the pressure below the piston to be less than the pressure in the positive pressure chamber, the piston and valve seat push the valve stem downwards together, causing the vent to disengage from the sealing gasket and connect the inner channel and valve chamber, allowing the high-pressure gas in the aerosol can to be ejected to replenish the pressure in the external container. When the piston 4 and valve seat 5 push the valve stem 3 downwards together, the pressure in the positive pressure chamber 20 decreases, the first spring 15 is compressed and its elastic force increases, and the aerosol can continuously replenishes the pressure in the external container, causing the fluid pressure in the external container to continuously increase. 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, valve seat 5, lever switch 6, and valve stem 3 move upwards simultaneously, and the aerosol can close. When the pressure in the external container decreases again, under the pressure of the positive pressure chamber 20, the piston 4 and valve seat 5 move downwards and press against the valve stem 3 through the boss 63, pushing the valve stem 3 downwards to reopen the aerosol can 1, replenishing the pressure in the outer container, and this process repeats.

[0030] Preferably, the valve seat 5 is provided with a sleeve 51 that fits over the outside of the valve stem 3, the lever switch 6 is provided with a rotating shaft 60, the lever switch 6 includes a first end 61 and a second end 62 located on both sides of its rotating shaft 60, the bottle cap 2 is provided with an extension opening 21 for the first end 61 to extend and move up and down, the valve seat 5 is provided with a first limiting part 52 and a second limiting part 53 for limiting the range of motion of the second end 62, when the lever switch 6 rotates to move the first end 61 upward, the boss 63 rotates to the side of the valve stem 3. On the other hand, the first limiting part 52 is used to restrict the downward movement of the second end 62; when the lever switch 6 rotates and causes the first end 61 to move downward, the boss 63 rotates above the valve stem 3, and the second limiting part 53 is used to restrict the upward movement of the second end 62 and limit the boss 63 above the valve stem 3; when the boss 63 is 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 outside the bottle cap 2 upwards, the lever switch 6 rotates until the second end 62 presses against the first limiting part 52. At this time, the boss 63 rotates to the side position of the valve stem 3 after installation, thus avoiding the valve stem 3 and allowing the valve stem 3 to be inserted into the sleeve 51. When the piston 4 and valve seat 5 move upwards, causing the lever switch 6 to move upwards and disengage the boss 63 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 presses against the second limiting part 53. At this time, the boss 63 rotates to the top of the valve stem 3, limiting the boss 63 directly above the upper end of the valve stem 3, so that when the piston 4, valve seat 5, and lever switch 6 move downwards, the boss 63 can better press on the valve stem 3 and push the valve stem 3 downwards. The structure is simple and the use is stable and reliable.

[0032] like Figure 2-6 The illustrated embodiment, as one implementation of the elastic torsion mechanism, comprises a torsion spring 7 installed between the lever switch 6 and the valve seat 5. Of course, it can also be implemented as follows... Figure 7 As shown, the elastic torsion mechanism is an arc-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 arc-shaped plastic spring 64 is easy to be bent to provide elastic force to the first end 61.

[0033] Preferably, such as Figure 6 As shown, the sleeve 51 has two opposing suspension plates 54 protruding from its side. The lever switch 6 is clamped between the two suspension plates 54. The suspension plate 54 is provided with a rotating hole 55 with a narrowed side inlet 56. The rotating shaft 60 is installed in the rotating hole 55. The narrowed side inlet 56 allows the rotating shaft 60 to be squeezed into the rotating hole 55 laterally and then prevents the rotating shaft 60 from coming out of 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 that is sealed to the inner wall of the bottle cap 2, and a sealing ring 42 that is also connected to the piston 4 and sealed 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 inside the positive pressure chamber 20. When the positive pressure chamber 20 contracts, the gas inside is compressed, creating downward pressure that acts on the piston 4. Of course, as another embodiment, such as... Figure 4 As shown, the positive pressure chamber 20 is equipped with a second spring 8 to elastically press the piston 4 downward.

[0035] The aerosol can 1 contains activated carbon 10 and gases that can be adsorbed by the activated carbon 10, such as carbon dioxide or other inert gases. To filter impurities, a filter rod 16 is provided at the lower inlet of the valve chamber 13.

Claims

1. A device for supplementing air pressure, characterized by: The aerosol can (1) is provided with a bottle cap (2), a valve rod (3) which opens the aerosol can (1) to spray the high-pressure gas in the aerosol can (1) when moving downward and closes the aerosol can (1) when moving upward, a piston (4) in the bottle cap (2), a valve seat (5) fixed on the piston (4), the piston (4) and the valve seat (5) above the valve rod (3), a lever switch (6) rotatably connected to the valve seat (5), an elastic torsion mechanism for driving the lever switch (6) to rotate, a boss (63) on the lever switch (6), the boss (63) pressing on the side of the valve rod (3) under the action of the elastic torsion mechanism, a positive pressure chamber (20) above the piston (4) in the bottle cap (2) for the piston (4) to move upward and provide a downward pressure to the piston (4) when the piston (4) moves upward, the bottle cap (2) being connected with the outside to enable the high-pressure fluid outside to enter the bottle cap (2) to push the piston (4) and the valve seat (5) upward and drive the lever switch (6) to move upward to make the boss (63) separate from the side of the valve rod (3), the boss (63) rotating to above the valve rod (3) under the action of the elastic torsion mechanism after separating from the side of the valve rod (3), when the fluid pressure outside the bottle cap (2) is reduced and less than the pressure of the positive pressure chamber (20), the piston (4) and the valve seat (5) move downward and push the valve rod (3) to move downward by pressing on the valve rod (3) through the boss (63) to open the aerosol can (1).

2. A device for supplementing air pressure as claimed in claim 1, characterized in that: The aerosol can (1) includes a bottle can (11), a valve chamber (13) fixed on the bottle can (11) through a sealing cup (12) at the bottle mouth, the valve rod (3) arranged in the valve chamber (13), a sealing gasket (14) arranged on the upper end of the valve chamber (13) to seal the valve chamber (13) from above, the upper end of the valve rod (3) penetrating through the sealing gasket (14) and exposed above the sealing gasket (14), the valve rod (3) being in sealing connection with the sealing gasket (14), a gas hole (31) arranged on the side of the valve rod (3), and an inner channel (32) arranged on the valve rod (3) to communicate the gas hole (31) with the outside of the bottle can (11), a first spring (15) arranged in the valve chamber (13) to elastically press the valve rod (3) upward so that the gas hole (31) is sealed by the sealing gasket (14).

3. A device for supplementing air pressure as claimed in claim 2, characterized in that: The aerosol can (1) is provided with activated carbon (10) and carbon dioxide or inert gas which can be adsorbed by the activated carbon (10), and a filter stick (16) arranged at the lower end inlet of the valve chamber (13).

4. A device for supplementing 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 outside 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) of the lever switch (6), the bottle cap (2) is provided with an outlet (21) for the first end (61) to extend out and 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 movement range of the second end (62), when the lever switch (6) is rotated to make the first end (61) move upward, the boss (63) is rotated to the side of the valve stem (3), and the first limiting portion (52) is used to limit the downward movement of the second end (62); when the lever switch (6) is rotated to make the first end (61) move downward, the boss (63) is rotated above the valve stem (3), and the second limiting portion (53) is used to limit the upward movement of the second end (62) and limit 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 located on both sides of the rotating shaft (60), respectively.

5. A device for supplementing air pressure as claimed in 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. A device for supplementing air pressure as defined in claim 4, characterized in that: The elastic torsion mechanism is an arc-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. A device for supplementing air pressure as defined in claim 4, characterized in that: The side of the sleeve (51) protrudes two opposite hanging plates (54), the lever switch (6) is clamped between the two hanging plates (54), the hanging plate (54) is provided with a rotating hole (55) with a narrowed side entrance (56), and the rotating shaft (60) is installed in the rotating hole (55).

8. A supplemental air pressure device according to any one of claims 1 to 3, wherein: The piston (4) is provided with a sealing ring (41) in sealing connection with the inner wall of the bottle cap (2), and the piston (4) is further connected with a sealing ring (42) in sealing connection 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).

9. A supplemental air pressure device according to any one of claims 1 to 3, wherein: The positive pressure chamber (20) is provided with a second spring (8) to elastically press the piston (4) downward.

Images