Aerosol inflating head

Abstract

The utility model provides an aerosol inflating head which is suitable for inflating an aerosol product, the aerosol product is provided with a valve, the valve comprises a valve stand and a valve rod arranged in the valve stand, and a gap is formed between the valve rod and the valve stand. The aerosol inflation head comprises a shell, a core body and a sealing assembly. An inner cavity of the shell is divided into a first cavity body and a second cavity body through a limiting block. One end of the core body is arranged in the first cavity in a sliding mode and extends into the second cavity, and the limiting block can limit the sliding range of the core body. An inflation channel is formed in the core body, and an air inlet channel communicated with the inflation channel is formed in the end, located in the second cavity, of the core body in a penetrating mode. A head protruding out of the first cavity is arranged at the end, away from the second cavity, of the core, a first matching part and a second matching part are arranged on the head in a protruding mode, a groove is formed between the first matching part and the second matching part, and a sealing ring is installed in the groove. And the sealing group is used for blocking or exposing the air inlet channel.

Description

Technical Field

[0001] This utility model relates to the field of inflation equipment manufacturing technology, and in particular to an aerosol inflation head. Background Technology

[0002] Aerosol products are widely used in cosmetics and other industrial products due to their ease of use, good sealing properties, and safety. Filling the aerosol can with propellant can help release the product more effectively.

[0003] In existing technologies, some aerosol products use a cap-filling method to fill the propellant into the aerosol can. However, the application scenarios for cap-filling are relatively limited, applicable to a small number of products, and the filling and sealing are completed by the same filling head, which can only fill one type of propellant. After the first type of propellant is filled, the second type of propellant cannot be filled. In addition, a dedicated filling and sealing machine and a dedicated exhaust gas recovery device are required, resulting in complex equipment structure and high cost.

[0004] Other aerosol products directly fill the canister with propellant through the gap between the valve stem and valve seat via an inflation head. The inflation head is typically a hollow, ventilated structure directly connected to the air intake device, and the aerosol product is equipped with a valve. During inflation, the inflation head rests against the valve seat to create a seal, allowing for better propellant filling into the canister. However, during inflation, the seal is on the valve seat, and the impact of the inflation head may lower the valve seat, reducing the valve stem height and making it incompatible with the spray cap. Furthermore, different valve manufacturers and valve types have varying valve seat diameters, heights, stem lengths, and diameters, necessitating the use of different sizes of standard aerosol inflation heads to accommodate different valve requirements. This undoubtedly increases costs.

[0005] Therefore, it is necessary to provide an aerosol charging head that is simple in structure, compatible with multiple valve types, and whose charging process does not affect the valve stem height. Utility Model Content

[0006] The purpose of this invention is to provide an aerosol filling head with a simple structure that is compatible with multiple valve types and whose inflation process does not affect the valve stem height.

[0007] To achieve the above objectives, this utility model provides an aerosol filling head suitable for filling aerosol products. The aerosol product is equipped with a valve, which includes a valve seat and a valve stem disposed within the valve seat. A gap exists between the valve stem and the valve seat.

[0008] The shell has a hollow inner cavity, and a limiting block is provided in the inner cavity, which divides the inner cavity into a first cavity and a second cavity;

[0009] The core is slidably disposed in the first cavity and extends into the second cavity at one end. An inflation channel is provided inside the core. An air inlet channel is provided through the end of the core located in the second cavity and connected to the inflation channel. A head is provided at the end of the core away from the second cavity, protruding out of the first cavity. A first mating part and a second mating part are provided on the head, and a groove is formed between the first mating part and the second mating part. A sealing ring is installed in the groove.

[0010] A sealing assembly is disposed in the second cavity. The core slides along the inner cavity of the housing to place the air intake channel within the sealing assembly to block the air intake channel, or the core slides along the inner cavity of the housing to disengage the air intake channel from the sealing assembly to allow air to enter.

[0011] By adopting the above technical solution, the aerosol filling head of this utility model does not require inflation sealing at the valve seat, and does not require pressing the valve seat, thus not affecting the height between the valve seat and the valve stem. The inflation process does not affect the height of the valve stem, allowing for better subsequent assembly. The aerosol filling head includes a shell, a core, and a sealing assembly. The shell has a hollow inner cavity, which is divided into a first cavity and a second cavity by a limiting block. One end of the core is slidably disposed in the first cavity and extends into the second cavity, and the limiting block restricts the sliding range of the core. An inflation channel is opened inside the core, and an air inlet channel communicating with the inflation channel is opened through the end of the core located in the second cavity. A head protruding from the first cavity is provided at the end of the core away from the second cavity. A first mating part and a second mating part are protruding on the head, and a groove is formed between the first mating part and the second mating part, with a sealing ring installed in the groove. The aerosol filling head of this invention seals the valve during inflation by using the first and second mating parts and a sealing ring. The sealing position is changed from the valve seat to the outer edge of the sealing cup, resulting in a good seal and preventing pressure on the valve seat. The sealing assembly is located in the second cavity. The core slides along the inner cavity of the housing to place the air inlet channel within the sealing assembly, thus blocking the air inlet channel. Alternatively, the core slides along the inner cavity of the housing to detach the air inlet channel from the sealing assembly, allowing air to enter. The sealing assembly is used to block or expose the air inlet channel. This aerosol filling head does not affect the valve stem height during inflation, allowing for better assembly in subsequent processes.

[0012] Preferably, the head has a receiving cavity for accommodating the valve, and the receiving cavity is connected to the inflation channel.

[0013] Preferably, the lower end of the receiving cavity is inclined inward to form a guide portion that facilitates fitting.

[0014] Preferably, a mating cavity that mates with the valve is provided in the middle of the receiving cavity. The mating cavity has a gradually decreasing cross-sectional area from the end near the guide to the end away from the guide. The end of the mating cavity near the inflation channel is located inside the head or extends out of the head.

[0015] Preferably, the core also includes a sliding part that protrudes from one side of the head and slides in conjunction with the first cavity.

[0016] Preferably, the limiting block has a through hole that allows the first cavity and the second cavity to communicate with each other. The core also includes a rod portion, which is protruding from the end of the sliding part away from the head. The rod portion passes through the through hole and is located in the second cavity.

[0017] Preferably, it also includes a connector, which is connected to the rod and externally connected to a lifting device to drive the core to slide within the housing so as to enable inflation.

[0018] Preferably, an inflation gap for inflation is provided between the rod portion in the second cavity and the housing.

[0019] Preferably, the sealing assembly includes a mounting member, in which a first seal and a second seal are installed, and a third seal is provided at one end of the mounting member near the limiting block. The first seal, the second seal, and the third seal cooperate with the mounting member to cover and seal the air intake passage or expose the air intake passage.

[0020] Preferably, the mounting component has a first mounting groove and a second mounting groove. The first mounting groove is used to install the first sealing element, and the second sealing element is installed in the second mounting groove in an elastically expandable manner. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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 based on these drawings without creative effort.

[0022] Figure 1 This is a structural diagram of an aerosol filling head provided in an embodiment of the present invention.

[0023] Figure 2 yes Figure 1 A structural diagram from another angle.

[0024] Figure 3 yes Figure 1 A cross-sectional view of the inflatable core in the inflated state.

[0025] Figure 4 yes Figure 1A cross-sectional view of the air-filled core in a non-air-tight state.

[0026] Figure 5 yes Figure 3 A cross-sectional view of the inner shell.

[0027] Figure 6 yes Figure 3 Cross-sectional view of the core structure.

[0028] Figure 7 yes Figure 3 Structural diagram of the mounting components.

[0029] Figure 8 yes Figure 3 Structural diagram of the second seal.

[0030] Explanation of icon numbers:

[0031] 100. Aerosol filling head;

[0032] 10. Shell; 101. Inner cavity; 102. Inflation gap; 11. Limiting block; 111. Through hole; 12. First cavity; 13. Second cavity; 14. Assembly hole;

[0033] 20. Core; 201. Inflation channel; 202. Air inlet channel; 21. Head; 211. First mating part; 212. Second mating part; 213. Groove; 214. Groove; 22. Sliding part; 23. Rod part; 24. Receiving cavity; 241. Guide part; 242. Mating cavity;

[0034] 30. Sealing ring;

[0035] 40. Sealing assembly; 41. Mounting element; 411. First mounting groove; 412. Second mounting groove; 42. First seal; 43. Second seal; 431. First sealing portion; 432. Second sealing portion; 44. Third seal;

[0036] 50. Connectors. Detailed Implementation

[0037] To explain the technical content and structural features of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0038] Please see Figures 1 to 4This utility model provides an aerosol filling head 100, suitable for filling aerosol products. The aerosol product is equipped with a valve, which includes a valve seat and a valve stem disposed within the valve seat, with a gap between the valve stem and the valve seat. Under normal conditions, the gap between the valve stem and the valve seat is sealed, preventing gas-liquid interaction with the aerosol can. Under pressure, gas-liquid can enter the aerosol can through the gap between the valve stem and the valve seat. The aerosol filling head 100 includes a housing 10, a core 20, and a sealing assembly 40. The housing 10 has a hollow inner cavity 101, in which a limiting block 11 is provided, dividing the inner cavity 101 into a first cavity 12 and a second cavity 13. One end of the core 20 is slidably disposed within the first cavity 12 and extends into the second cavity 13, meaning the core 20 is simultaneously placed within both the first cavity 12 and the second cavity 13. The core 20 has an internal inflation channel 201. One end of the core 20, located within the second cavity 13, has a through-hole channel 202 connected to the inflation channel 201. The inlet channel 202 is connected to an inflation device, allowing pressurized gas to enter the inflation channel 201 through the inlet channel 202. On the other hand, the end of the core 20 furthest from the second cavity 13 has a head 21 protruding from the first cavity 12. The head 21 has a first mating part 211 and a second mating part 212 protruding from it, forming a groove 213 between the first mating part 211 and the second mating part 212. A sealing ring 30 is installed within the groove 213. The first mating part 211 mates with a valve seat, and the second mating part 212 mates with the outer edge of a sealing cup. The sealing ring 30 is located between the first mating part 211 and the second mating part 212 to seal the aerosol filling head 100 and the aerosol can, allowing for better propellant filling. Changing the sealing position from the valve seat to the outer edge of the sealing cup provides a better sealing effect and avoids pressing on the valve seat, thus not affecting the height between the valve seat and the valve stem. The sealing assembly 40 is located inside the second cavity 13. The core 20 slides along the inner cavity 101 of the housing 10 to place the air intake channel 202 inside the sealing assembly 40 to block the air intake channel 202, or the core 20 slides along the inner cavity 101 of the housing 10 to disengage the air intake channel 202 from the sealing assembly 40 to allow air to enter.

[0039] By adopting the above technical solution, the aerosol filling head 100 of this utility model does not require inflation sealing at the valve seat, and does not require pressing the valve seat, thus not affecting the height between the valve seat and the valve stem. The inflation process does not affect the height of the valve stem, allowing for better subsequent assembly. The aerosol filling head 100 includes a housing 10, a core 20, and a sealing assembly 40. The housing 10 has a hollow inner cavity 101, which is divided into a first cavity 12 and a second cavity 13 by a limiting block 11. One end of the core 20 is slidably disposed in the first cavity 12 and extends into the second cavity 13, and the limiting block 11 can limit the sliding range of the core 20. An inflation channel 201 is opened inside the core 20, and an air inlet channel 202 communicating with the inflation channel 201 is opened through the end of the core 20 located in the second cavity 13. The core 20 has a head 21 protruding from the first cavity 12 at one end away from the second cavity 13. A first mating part 211 and a second mating part 212 are protruding from the head 21, forming a groove 213 between them. A sealing ring 30 is installed within the groove 213. The first mating part 211, the second mating part 212, and the sealing ring 30 seal the inflation valve, changing the sealing position from the valve seat to the outer edge of the sealing cup, resulting in a good sealing effect and preventing pressure on the valve seat. The sealing assembly 40 is disposed within the second cavity 13. The core 20 slides along the inner cavity 101 of the housing 10 to place the air intake channel 202 within the sealing assembly 40 to block the air intake channel 202, or the core 20 slides along the inner cavity 101 of the housing 10 to disengage the air intake channel 202 from the sealing assembly 40 to allow air intake. The sealing assembly 40 is used to block or expose the air intake channel 202. The aerosol filling head 100 of this utility model does not affect the height of the valve stem during the filling process, and can be better assembled in subsequent processes.

[0040] Please see Figures 3 to 6 In some optional embodiments, a groove 214 is further provided in the groove 213 formed between the first mating part 211 and the second mating part 212. The sealing ring 30 is installed in the groove 214. The inner diameter of the groove 214 is larger than the inner diameter of the groove 213, so that the sealing ring 30 can be more securely installed between the first mating part 211 and the second mating part 212. On the other hand, an assembly hole 14 is also provided through the upper part of the housing 10. The assembly hole 14 is formed on the side wall of the first cavity 12. The assembly hole 14 is used to assist in the installation of the housing 10, and the housing 10 can be more easily installed and removed through the assembly hole 14.

[0041] Please see Figure 3 , Figure 4 and Figure 6In some optional embodiments, a receiving cavity 24 for accommodating a valve is provided within the head 21, and the receiving cavity 24 is connected to the inflation channel 201. The lower end of the receiving cavity 24 slopes inward to form a guide portion 241 for easy engagement, which facilitates engagement with the valve during inflation. Specifically, a mating cavity 242 for engaging with various valves is provided in the middle of the receiving cavity 24. The mating cavity 242 has a gradually decreasing cross-sectional area from the end near the guide portion 241 to the end away from the guide portion 241, to accommodate various valves. The end of the mating cavity 242 near the inflation channel 201 is located inside or extends outside the head 21. It is understood that the volume of the mating cavity 242 is relatively large, approximately level with or exceeding the height of the head 21, to better accommodate various valves and broaden its applicability.

[0042] Please see Figure 3 , Figure 4 and Figure 6 In some optional embodiments, the core 20 further includes a sliding portion 22, which protrudes from one side of the head 21 and slides in conjunction with the first cavity 12. On the other hand, the limiting block 11 has a through hole 111 that allows the first cavity 12 and the second cavity 13 to communicate with each other. The core 20 also includes a rod portion 23, which protrudes from the end of the sliding portion 22 away from the head 21, passes through the through hole 111, and is located within the second cavity 13. It is understood that the core 20 includes a head 21, a sliding portion 22, and a rod portion 23. The outer diameter of the head 21 is larger than the outer diameter of the sliding portion 22, and the outer diameter of the sliding portion 22 is larger than the outer diameter of the rod portion 23. The head 21 is located outside the housing 10 and close to the first cavity 12. The sliding portion 22 can slide within the first cavity 12, and the rod portion 23 passes through the through hole 111, with one end located within the first cavity 12 and the other end located within the second cavity 13.

[0043] Please see Figures 1 to 4 In some optional embodiments, the aerosol filling head 100 further includes a connector 50, which is connected to one end of the rod 23 and externally connected to a lifting device to drive the core 20 to slide within the housing 10 for inflation. The rod 23 has an inflation gap 102 between itself and the housing 10 within the second cavity 13. An air inlet channel 202 is located within the inflation gap 102. An external pressurizing device is installed at the inflation gap 102 and can inflate the inflation channel 201 through the air inlet channel 202. Compressed gas then enters the receiving cavity 24 from the inflation channel 201. The valve of the aerosol can to be inflated is located within the receiving cavity 24. The compressed gas exerts force on the gap between the valve stem and the valve seat, thereby allowing the compressed gas to enter the aerosol can through the gap between the valve stem and the valve seat.

[0044] Please see Figure 3 , Figure 4 , Figure 7 and Figure 8 In some optional embodiments, the sealing assembly 40 includes a mounting member 41, within which a first seal 42 and a second seal 43 are mounted. A third seal 44 is also provided at one end of the mounting member 41 near the limiting block 11. The cooperation of the first seal 42, the second seal 43, and the third seal 44 with the mounting member 41 can either cover and seal the air intake passage 202 or expose it. The mounting member 41 has a first mounting groove 411 and a second mounting groove 412. The first mounting groove 411 is used to mount the first seal 42, and the second seal 43 is elastically and telescopically mounted within the second mounting groove 412. Specifically, the first seal 42 can be an O-ring seal. The second seal 43 includes a first sealing portion 431 and a second sealing portion 432, which are integrally formed. The first sealing portion 431 is used to cooperate with the mounting member 41, and the second sealing portion 432 is used to cooperate with the core 20. The third seal 44 is in the shape of a gasket and is used to cooperate with the limiting block 11 inside the housing 10. The first seal 42, the second seal 43, the third seal 44 and the mounting member 41 are all provided with holes for the rod 23 to slide, so that the rod 23 of the core 20 can slide within the sealing assembly 40.

[0045] like Figures 1 to 8As shown, the aerosol filling head 100 of this utility model includes a shell 10, a core 20, and a sealing assembly 40. The shell 10 has a hollow inner cavity 101, which is divided into a first cavity 12 and a second cavity 13 by a limiting block 11. One end of the core 20 is slidably disposed in the first cavity 12 and extends into the second cavity 13, and the limiting block 11 can limit the sliding range of the core 20. An inflation channel 201 is provided inside the core 20, and an air inlet channel 202 communicating with the inflation channel 201 is provided through the end of the core 20 located in the second cavity 13. A head 21 protruding out of the first cavity 12 is provided at the end of the core 20 away from the second cavity 13. A first mating part 211 and a second mating part 212 are provided on the head 21, and a groove 213 is formed between the first mating part 211 and the second mating part 212. A sealing ring 30 is installed in the groove 213. The inflatable valve is sealed by the first mating part 211, the second mating part 212, and the sealing ring 30. The sealing position is changed from the valve seat to the outer edge of the sealing cup, resulting in a good sealing effect and preventing pressure on the valve seat. A receiving cavity 24 for accommodating the valve is also provided inside the head 21. The receiving cavity 24 has a large volume and a frustum-shaped structure in the middle, which can accommodate various types of valves and has a wide range of applications. On the other hand, the sealing assembly 40 is disposed in the second cavity 13. The core 20 slides along the inner cavity 101 of the housing 10 to place the air intake channel 202 within the sealing assembly 40 to block the air intake channel 202, or the core 20 slides along the inner cavity 101 of the housing 10 to disengage the air intake channel 202 from the sealing assembly 40 to allow air to enter. The sealing assembly 40 is used to block or expose the air intake channel 202. The aerosol filling head 100 of this utility model can be applied to various aerosol can valves, has a wide range of applications, and the filling process does not affect the valve stem height, allowing for better assembly in subsequent processes.

[0046] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.

Claims

1. An aerosol charge head adapted to charge an aerosol product, said aerosol product having a valve disposed thereon, said valve comprising a valve deck and a valve stem disposed within said valve deck, said valve stem and said valve deck having a gap therebetween, characterized in that, The utility model relates to a valve, including: A shell is provided with a hollow inner chamber, the inner chamber is provided with a limiting block, the limiting block divides the inner chamber into a first cavity and a second cavity; A core body is slidably arranged in the first cavity and extends into the second cavity, the core body is internally provided with an inflation channel, and one end of the core body in the second cavity is provided with an air inlet channel communicated with the inflation channel; A sealing assembly is arranged in the second cavity, and the core body slides along the inner chamber of the shell to make the air inlet channel in the sealing assembly to block the air inlet channel, or the core body slides along the inner chamber of the shell to make the air inlet channel separate from the sealing assembly to allow air inflow.

2. An aerosol gas-charging head according to claim 1, characterized in that The head is internally provided with a containing cavity for containing the valve, and the containing cavity is communicated with the inflation channel.

3. An aerosol gas-charging head according to claim 2, wherein, The lower end of the containing cavity is inclined and inwardly recessed to form a guide part facilitating cooperation.

4. An aerosol gas-charging head according to claim 3, characterized in that The middle part of the containing cavity is provided with a cooperation cavity matched with the valve, the cooperation cavity gradually changes from large to small in cross-sectional area from one end close to the guide part to one end away from the guide part, and the end of the cooperation cavity close to the inflation channel is located in the head or extends out of the head.

5. The aerosol gas-charging head of claim 1, wherein, The core body further includes a sliding part extending out of one side of the head, and the sliding part is in sliding cooperation with the first cavity.

6. An aerosol gas-charging head according to claim 5, characterized in that The limiting block is provided with a through hole for connecting the first cavity and the second cavity, the core body further includes a rod part extending out of one end of the sliding part away from the head, and the rod part passes through the through hole and is located in the second cavity.

7. An aerosol gas-charging head according to claim 6, characterized in that Further including a connecting piece connected to the rod part and externally connected to a lifting device to drive the core body to slide in the shell to inflate.

8. An aerosol gas-charging head according to claim 6, characterized in that The rod part is provided with an inflation gap between the second cavity and the shell for inflation.

9. The aerosol gas-charging head of claim 1, wherein, The sealing assembly includes a mounting part internally provided with a first sealing part and a second sealing part, and one end of the mounting part close to the limiting block is further provided with a third sealing part, so as to cover and seal the air inlet channel or expose the air inlet channel by cooperation of the first sealing part, the second sealing part, the third sealing part and the mounting part.

10. An aerosol gas-charging head according to claim 9, characterized in that, The mounting part is internally provided with a first mounting groove and a second mounting groove, the first mounting groove is used for mounting the first sealing part, and the second sealing part is elastically mounted in the second mounting groove.

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