A two-component aerosol can

Abstract

This utility model relates to a two-component aerosol can, belonging to the field of aerosol packaging technology. It includes a nozzle, an inner can, a push rod, a connector, and an outer can. The inner can stores component A, and the outer can stores component B. Inside the outer can, the inner can is inverted and mounted on the bottom of the outer can via the connector. The inner can's opening is sealed by the connector. One end of the push rod is located outside the outer can, and the other end passes through the bottom of the outer can and the inner cavity of the connector before extending into the inner can, with the top of the push rod abutting against the inner can. The push rod, inner can, and connector are coaxially arranged. A second annular groove is provided on the push rod inside the connector for installing a sealing ring, which seals the push rod against the connector. Pressing the push rod causes it to separate the inner can from the connector, mixing components A and B. The mixture of components A and B is sprayed out by the nozzle located at the top of the outer can. This utility model can fully mix the two components inside the can, improve the effective spray rate, and reduce residual liquid inside the can.

Description

Technical Field

[0001] This utility model relates to the field of aerosol packaging technology, specifically to a two-component aerosol can, which can be widely used in multiple fields such as automobiles, construction, paints, coatings, adhesives, surface treatment, and outdoor emergency response. Background Technology

[0002] The application areas of aerosol products are constantly expanding, and the market is currently dominated by single-component aerosols. However, two-component aerosols have shown significant advantages in special industries and applications such as paints, coatings, adhesives, and sealants, where the function needs to be achieved through component mixing and reaction. They can overcome the performance limitations of single-component aerosols and meet more complex usage requirements, thus gradually gaining attention.

[0003] In existing technologies, two-component aerosol cans mostly adopt a "main can + inner can" structural design: the inner can stores one of the materials and is fixed inside the main can, while the main can holds the other material. For example, the two-component aerosol can structures disclosed in patent documents CN222934437U, CN222805377U, and CN221386961U all adopt a similar design concept. In use, the inner can is opened to connect with the main can, and the two materials are mixed. However, the two-component aerosol cans in the above-mentioned existing technologies have obvious defects: the material in the inner can cannot all enter the main can, resulting in many dead corners during the mixing process, causing the materials to not be fully mixed. This insufficient mixing directly leads to residue in the can: the two components fail to blend evenly, and some material remains in hard-to-reach areas such as corners of the can. Residue not only causes material waste and increases production costs, but also poses significant quality risks. Taking the coatings industry as an example, if the resin and curing agent in a two-component system are not mixed sufficiently, the remaining unreacted components will directly affect the drying speed, surface hardness and adhesion of the coating, leading to a decline in product performance, and in severe cases, even causing the product to fail to meet standards.

[0004] In addition, the liquid inlet tube in the existing two-component aerosol can cannot draw out all the mixed material, and the mixed material will remain in the can.

[0005] Therefore, how to solve the problems of insufficient mixing of materials in two-component aerosol cans and excessive residue in the can has become an urgent technical problem to be solved in this field. Utility Model Content

[0006] To address the problems of insufficient mixing and excessive residue in existing two-component aerosol cans, this invention provides a two-component aerosol can that can achieve thorough mixing of the two components, improve the effective spray rate, reduce residual liquid in the can, and is simple to manufacture and has low material costs.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A two-component aerosol can includes a nozzle, an inner can, a push rod, a connector, and an outer can; wherein the inner can stores component A, and the outer can stores component B; the inner diameter of the outer can is larger than the outer diameter of the inner can.

[0009] Inside the outer tank, the inner tank is invertedly mounted on the bottom end of the outer tank via the connector; the inner tank closes the opening via the connector; the connector has an inner cavity;

[0010] One end of the push rod is located outside the outer tank, and the other end passes through the bottom of the outer tank and the inner cavity of the connector before extending into the inner tank, with the top end of the push rod abutting against the inner tank. The push rod, the inner tank, and the connector are coaxially arranged. A second annular groove is provided on the push rod inside the connector for installing a sealing ring, which is used to seal between the push rod and the connector. Pressing the push rod can push the inner tank to separate from the connector, thereby mixing component A and component B. The mixture of component A and component B is sprayed out by the nozzle located at the top of the outer tank.

[0011] Furthermore, the push rod is a long push rod, or it consists of an inner push rod and an outer push rod;

[0012] The inner push rod is coaxially placed inside the inner tank, with the top end of the inner push rod abutting against the inner tank, and the lower part of the inner push rod being inserted into the inner cavity of the connector from above. The lower part of the inner push rod is provided with the second annular groove.

[0013] The outer push rod passes through the bottom end of the outer tank and is inserted into the inner cavity of the connector from below, with the top surface of the outer push rod abutting against the bottom surface of the inner push rod; the inner push rod, the outer push rod, and the inner tank are coaxially arranged; the outer push rod pushes the inner tank and the connector apart through the inner push rod.

[0014] Furthermore, the connecting component includes an upper support pipe, a lower support pipe, a flange, and a longitudinal annular boss; the upper support pipe and the lower support pipe are coaxially arranged vertically at the center of the flange, and both the upper and lower support pipes are hollow structures with their inner cavities communicating with each other; the longitudinal annular boss is coaxially arranged on the upper end face of the flange, and the outer diameter of the longitudinal annular boss matches the inner diameter of the inner tank, and the distance between the outer end of the longitudinal annular boss and the outer end of the flange is not less than the wall thickness of the inner tank; the inner tank is upside down on the flange and fitted onto the longitudinal annular boss; the lower part of the inner push rod is inserted into the upper support pipe, and the outer push rod is inserted into the lower support pipe.

[0015] Furthermore, the connector also includes a transverse annular boss, which is installed at the bottom of the inner cavity of the upper support tube, and the inner diameter of the transverse annular boss is smaller than the inner diameter of the lower support tube.

[0016] Furthermore, the external push rod consists of an upper straight rod and a lower straight rod; the diameter of the lower straight rod is greater than the inner diameter of the transverse annular boss and the diameter of the upper straight rod, and the height of the longitudinal annular boss is less than the height of the upper straight rod and the height of the upper support tube; the diameter of the upper straight rod is smaller than the diameter of the lower straight rod, and the diameter of the lower straight rod matches the inner diameter of the lower support tube.

[0017] Furthermore, a first annular groove is provided on the outer circumference of the longitudinal annular boss for installing a sealing ring, which is used to achieve a seal between the longitudinal annular boss and the inner tank.

[0018] Furthermore, a return spring is sleeved on the push rod in the lower part of the inner cavity of the connector. The bottom end of the connector is provided with a third annular groove. The second sealing gasket is embedded in the third annular groove and tightly sleeved on the push rod to achieve a seal between the connector and the push rod and to prevent the return spring from disengaging from the connector.

[0019] Furthermore, the upper part of the push rod is provided with a push plate, the diameter of which is larger than the diameter of the push rod; the top of the push plate abuts against the top of the inner tank; the shape of the push plate matches the shape of the top of the inner tank.

[0020] Furthermore, the connection between the inner tank and the connector can be a snap-fit, interference fit, sealing ring connection, or thermo-press connection.

[0021] Furthermore, the aerosol can also include a normally closed spring-loaded valve and a liquid inlet tube; the normally closed spring-loaded valve is installed at the top of the outer can, the nozzle is connected to the liquid inlet tube through the normally closed spring-loaded valve, and the input end of the liquid inlet tube extends to the bottom of the outer can.

[0022] The beneficial effects of this utility model are:

[0023] This invention relates to a two-component aerosol can with an internal connector fixed to the can body via a lower cover. The inner can is inverted and mounted on the connector, sealing its internal components with the connector. This ensures independent storage and sealing of the two components when not in use. During use, pressing the push rod moves the inner can, separating it from the connector and allowing mixing of components A and B. The separated inner can acts as a stirrer when the aerosol can is shaken, promoting thorough mixing of the two components. The liquid inlet tube extends to the bottom of the outer can, allowing most of the mixture to be drained, improving the effective spray rate and reducing residual liquid in the can. Furthermore, this invention features a simple structure, is easy to manufacture, and has low production costs, making it widely applicable in various fields such as automotive, construction, paint, coatings, adhesives, surface treatment, and outdoor emergency applications. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a two-component aerosol can according to Embodiment 1 of this utility model;

[0025] Figure 2 This is a schematic diagram of the connecting component structure in this utility model;

[0026] Figure 3 This is a schematic diagram of the assembly of the connector and the lower cover in this utility model;

[0027] Figure 4 This is a schematic diagram of the inner push rod structure in this utility model;

[0028] Figure 5 This is a schematic diagram of the assembly of the connector, lower cover, outer push rod and protective cap in this utility model;

[0029] Figure 6 This is a diagram showing the operating status of a two-component aerosol can according to Embodiment 1 of this utility model;

[0030] Figure 7 This is a diagram showing the initial state of the two-component aerosol can in Embodiment 2 of this utility model;

[0031] Figure 8 This is a diagram showing the operating status of the two-component aerosol can in Embodiment 2 of this utility model.

[0032] The components are: 1-nozzle, 2-top cover, 3-valve core, 4-first sealing gasket, 5-spring, 6-valve body, 7-liquid inlet tube, 8-component A, 9-inner tank, 10-inner push rod, 10.1-second annular groove, 10.2-push plate, 11-sealing ring, 12-sealing ring, 13-connector, 13.1-upper support tube, 13.2-lower support tube, 13.3-flange, 13.4-longitudinal annular boss, 13.6-first annular groove, 13.5-transverse annular boss, 14-outer push rod, 15-protective cap, 16-bottom cover, 17-component B, 18-outer tank, 19-top cover, 20-outer gasket, 21-lower cover, 22-return spring, 23-second sealing gasket. Detailed Implementation

[0033] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0034] The terms used in this application, such as top, bottom, left, right, inside, outside, front end, rear end, head, and tail, are based on the orientations or positional relationships shown in the accompanying drawings. Different drawings may result in different positional relationships, therefore they should not be construed as limiting the scope of protection.

[0035] In this utility model, the terms "installation," "connection," "interlocking," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a connection that allows communication, a direct connection, or an indirect connection through an intermediate medium. They can also refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0036] Example 1

[0037] This embodiment describes a two-component aerosol can, such as Figure 1 As shown, the device includes a nozzle 1, an upper cover 2, a normally closed spring-loaded valve, a liquid inlet tube 7, an inner tank 9, a push rod, a connector 13, a protective cap 15, an outer tank 18, and a lower cover 21. The push rod can be composed of an inner push rod 10 and an outer push rod 14. In this embodiment, the inner tank 9 is used to store component A 8, and the outer tank 18 is used to store component B 17.

[0038] In this embodiment, the inner tank 9 is a cylindrical structure with a closed upper end and an open lower end. The inner tank 9 is coaxially mounted to the bottom of the outer tank 18 via a connector 13.

[0039] The connector 13 used in this embodiment is an integrated structure, such as Figure 2 The structure shown includes an upper support pipe 13.1, a lower support pipe 13.2, a flange 13.3, a longitudinal annular boss 13.4, and a transverse annular boss 13.5.

[0040] The upper support pipe 13.1 and the lower support pipe 13.2 are coaxially arranged at the center of the flange 13.3. The upper support pipe 13.1 and the lower support pipe 13.2 are hollow structures with their inner cavities connected. The inner diameter of the upper support pipe 13.1 is larger than that of the lower support pipe 13.2. The upper part of the inner push rod 10 is placed inside the inner tank 9, and the lower part is inserted into the upper support tube 13.1. The outer push rod 14 is inserted into the lower support tube 13.2, and the outer push rod 14 can extend into the upper support tube 13.1. The inner tank 9 is moved by the inner push rod 10, causing the inner tank 9 to separate from the connector 13. The inner tank 9, inner push rod 10, connector 13, and outer push rod 14 are coaxially arranged. The inner push rod 10 can apply the thrust provided by the outer push rod 14 axially to the bottom of the inner tank 9, causing the inner tank 9 to detach from the connector 13 axially. While ensuring that the thrust can effectively separate the inner tank 9 from the connector 13, it can also reduce the power required to push the inner tank 9. Preferably, the inner diameter of the upper support tube 13.1 matches the outer diameter of the lower part of the inner push rod 10, and the inner diameter of the lower support tube 13.2 matches the maximum outer diameter of the outer push rod 14.

[0041] The bottom outer circumference of the lower support tube 13.2 tapers from bottom to top, and this tapering structure matches the concave structure in the middle of the lower cover 21. During installation, as... Figure 3 As shown, the connector 13 is connected to the concave structure of the lower cover 21 through the tapered structure of the lower support tube 13.2, and the connector 13 is fixed to the bottom of the outer tank 18 through the lower cover 21.

[0042] A transverse annular boss 13.5 is installed at the bottom of the inner cavity of the upper support pipe 13.1. The inner diameter of the transverse annular boss 13.5 is smaller than the inner diameter of the lower support pipe 13.2. This is to prevent the inner push rod 10 from entering the lower support pipe 13.2 and the outer push rod 14 from entering the upper support pipe 13.1 completely. It also limits the maximum stroke of the push rod pushing the inner tank 9. Furthermore, the height of the upper end face of the transverse annular boss 13.5 is lower than the height of the upper end face of the flange 13.3.

[0043] A longitudinal annular boss 13.4 is coaxially disposed on the upper end face of the flange 13.3, and there is a predetermined distance between the outer end of the longitudinal annular boss 13.4 and the outer end of the flange 13.3. Preferably, the outer diameter of the longitudinal annular boss 13.4 matches the inner diameter of the inner tank 9, and the predetermined distance is not less than the wall thickness of the inner tank 9. When the inner tank 9 is upside down on the flange 13.3 and fitted onto the longitudinal annular boss 13.4, its bottom end is placed on the upper end face of the flange 13.3 outside the longitudinal annular boss 13.4, and the inner wall of the inner tank 9 is in close contact with the outer wall of the longitudinal annular boss 13.4, thereby sealing the lower opening of the inner tank 9 using the connector 13.

[0044] In this embodiment, the connection strength between the inner tank 9 and the connector 13 must be sufficient to allow separation under the thrust of the inner push rod 10, while maintaining a sealed state when not in use. The inner tank 9 and the connector 13 can be connected by snap-fit, interference fit, sealing ring connection, or thermoforming connection.

[0045] For example, in the case of sealing ring connection: a first annular groove 13.6 is provided on the outer circumference of the longitudinal annular boss 13.4 for installing the sealing ring 12. The sealing ring 12 is used to further ensure the sealing between the inner tank 9 and the connector 13, so as to achieve the sealing of component A 8 and avoid the components in the inner tank 9 and the outer tank 18 from mixing before use.

[0046] The lower cover 21 has a through hole coaxially at its center, which is consistent with the inner cavity of the lower support tube 13.2. The outer push rod 14 passes through the through hole of the lower cover 21 and is inserted into the lower support tube 13.2. The top surface of the outer push rod 14 abuts against the bottom surface of the inner push rod 10 inserted into the upper support tube 13.1. When the outer push rod 14 is pushed into the tank, it can push the inner push rod 10 and the inner tank 9 to move into the tank together.

[0047] In this embodiment, the external push rod 14 is a stepped rod composed of an upper straight rod and a lower straight rod. The diameter of the upper straight rod is smaller than that of the lower straight rod, and the diameter of the lower straight rod is greater than the inner diameter of the transverse annular boss 13.5, which is greater than the diameter of the upper straight rod. That is, the upper straight rod can pass through the transverse annular boss 13.5 and enter the upper support tube 13.1 to push the inner push rod 10 to move. When the lower straight rod abuts against the transverse annular boss 13.5, the external push rod 14 stops pushing. In this embodiment, the height of the longitudinal annular boss 13.4 is less than the height of the upper straight rod, which is less than the height of the upper support tube 13.1. This ensures that the external push rod 14 can push the inner can 9 away from the connector 13, while keeping the inner push rod 10 from detaching from the upper support tube 13.1, thus ensuring the seal of the bottom of the aerosol can.

[0048] The inner push rod 10 is a straight rod structure, such as... Figure 4As shown, a second annular groove 10.1 is provided at the lower part for installing a sealing ring 11. The sealing ring 11 is used to seal between the inner push rod 10 and the upper support tube 13.1, preventing component A 8 from leaking from the center of the connector 3. The distance from the second annular groove 10.1 to the top of the upper support tube 13.1 (i.e., the end closest to the inside of the tank) is greater than the maximum stroke of the push rod pushing the inner tank 9. A push plate 10.2 is provided on the upper part of the inner push rod 10, and the top of the push plate 10.2 abuts against the top of the inner tank 9. The diameter of the push plate 10.2 is larger than the diameter of the inner push rod 10, and the shape of the push plate 10.2 matches the shape of the top of the inner tank 9, which can increase the contact area with the inner tank 9 to ensure that the push rod stably pushes the inner tank 9 to move.

[0049] In this embodiment, the outer can 18 is the main body of the two-component aerosol can. It has a hollow cylindrical structure. The inner diameter of the outer can 18 is larger than the outer diameter of the inner can 9. That is, there is a gap between the inner wall of the outer can 18 and the outer wall of the inner can 9. Component B 17 can flow in this gap space. When the inner can 9 is separated from the connector 13, this gap space provides space for the inner can 9 to move.

[0050] The upper and lower ends of the outer can 18 are a top cover 19 and a bottom cover 16 with coaxial openings, respectively.

[0051] In this embodiment, the bottom cover 16 adopts a conventional concave structure, forming a concave bottom at the bottom of the outer can 18 to facilitate stable placement of the aerosol can. The edge of the opening in the bottom cover 16 has a downwardly convex arc-shaped structure.

[0052] The lower cover 21 is installed at the opening and can be a quick-release locking structure. Its end has a downwardly protruding annular groove structure that matches the arc-shaped structure of the bottom cover 16. The lower cover 21 achieves a coaxial interlocking connection with the bottom cover 16 through the annular groove structure and the arc-shaped structure of the bottom cover 16, thus sealing the opening of the bottom cover 16. The middle of the lower cover 21 has a downwardly protruding concave structure that matches the tapered structure of the connector 13. The lower cover 21 is interlocked with the connector 13 through the concave structure.

[0053] like Figure 5 As shown, the downward-protruding annular groove structure makes the lower cover 21 concave. The protective cap 15 is fitted into the concave structure of the lower cover 21 to protect the outer push rod 14 and prevent leakage of component A 8 and premature mixing of components in the can due to accidental pushing of the outer push rod 14. The protective cap 15 is a cylindrical hollow structure with an open top. A hollow central boss extending upward is provided at the center of its inner bottom end. The bottom end of the outer push rod 14 is fitted into the central boss to prevent the outer push rod 14 from moving when not in use, which helps to ensure the sealing of the aerosol can.

[0054] The top cover 19 can adopt a conventional upward convex structure, and the edge of its opening has an outward arc-shaped structure. The structure of the upper cover 2 is the opposite of that of the lower cover 21, with both the annular groove structure at its end and the concave structure in the middle protruding upwards. The upper cover 2 and the top cover 19 are coaxially interlocked, sealing the opening of the top cover 19, and an outer gasket 20 is installed between them to ensure a seal.

[0055] The upper cover 2 has a through hole in the center. The nozzle 1 is installed on the upper cover 2. The nozzle 1 is connected to the normally closed spring-loaded valve installed in the outer tank 18 at the through hole of the upper cover 2. The output end of the liquid inlet pipe 7 is connected to the inlet of the normally closed spring-loaded valve. The input end of the liquid inlet pipe 7 extends to the bottom of the outer tank 18. When the nozzle 1 is pressed, it can provide downward pressure to the normally closed spring-loaded valve, opening the normally closed spring-loaded valve and connecting its inlet and outlet. The normally closed spring-loaded valve can export all the mixed two components through the liquid inlet pipe 7.

[0056] The normally closed spring-loaded valve used in this embodiment is installed in the concave structure in the middle of the upper cover 2. This normally closed spring-loaded valve is a conventional valve with a valve body 6 containing a valve chamber. The upper and lower ends of the valve chamber are coaxially positioned with an outlet and an inlet. From top to bottom, the valve chamber contains a valve core 3, a first sealing gasket 4, and a spring 5. The valve core 3 is pressed into the valve chamber by the spring 5. The first sealing gasket 4 is installed at the inlet end of the valve core 3, initially sealing the inlet end. When the nozzle 1 is pressed, the valve core 3 moves under force, compressing the spring 5. This causes the first sealing gasket 4 to leave its sealing position, allowing the inlet and outlet to connect.

[0057] In its initial state, the bottom end of the inner push rod 10 is connected to the top end of the outer push rod 14, the inner can 9 is pressed against the connector 13, and the normally closed spring-loaded valve is in the closed state. During use, remove the protective cap 15, press the outer push rod 14, and the inner push rod 10, driven by the outer push rod 14, pushes the bottom of the inner can 9, causing the inner can 9 to move inward and disengage from the connector 13. When the outer push rod 14 abuts against the transverse annular boss 13.5, as... Figure 6 As shown, the inner tank 9 and the connector 13 are in a state of maximum separation, and component A 8 and component B 17 begin to mix and react.

[0058] Shaking the aerosol can at this point causes the inner can 9 to sway, agitating the components and ensuring a more thorough mixing of components A (8) and B (17). After thorough mixing, pressing the nozzle 1 releases the mixture of components A (8) and B (17) through the inlet tube 7 and sprays it out through the nozzle 1. The aerosol can can be continued to be shaken during nozzle 1's operation intervals. Because the opening of the inner can 9 is located at the bottom, component A (8) inside will mix completely with component B (17) as the aerosol can is shaken and the mixture is sprayed out, ensuring thorough mixing of the two components.

[0059] Example 2

[0060] This embodiment describes a two-component aerosol can, such as Figure 7 and Figure 8 As shown, this embodiment is similar in structure to Embodiment 1, except that the aerosol can is also equipped with a return spring 22 and a second sealing gasket 23. The return spring 22 is sleeved on the outer push rod 14 inside the lower support tube 13. The return spring 22 is used to prevent the outer push rod 14 from falling out of the connector 13. A third annular groove is provided at the bottom of the inner cavity of the lower support tube 13. The second sealing gasket 23 is embedded in the third annular groove and tightly fitted onto the outer push rod 14, used to achieve a seal between the connector 13 and the outer push rod 14, and to prevent the return spring 22 from falling out of the lower support tube 13.2. Simultaneously, under the action of the transverse annular boss 13.5, the return spring 22 will not enter the upper support tube 13.1. Furthermore, when the outer push rod 14 is pressed, as the outer push rod 14 moves, the transverse annular boss 13.5 compresses the return spring 22, causing the outer push rod 14 to smoothly push the inner push rod 10, thereby causing the inner can 9 to gradually and smoothly separate from the connector 13.

[0061] Example 3

[0062] This embodiment describes a two-component aerosol can. Compared with the two embodiments described above, the difference lies in that the push rod is a long push rod. A second annular groove 10.1 is provided on the long push rod inside the connector 13. The sealing ring 11 is fitted onto the long push rod through the second annular groove 10.1 to achieve a seal between the long push rod and the upper support tube 13.1 or the lower support tube 13.2, preventing the components from leaking through the inner cavity of the connector 13. The second annular groove 10.1 must always be located in the inner cavity of the connector 13, that is, the distance from the second annular groove 10.1 to the top of the inner cavity of the connector 13 (i.e., the end near the inner can 9) is greater than the maximum stroke of the long push rod during operation.

[0063] One end of the long push rod is embedded in the central boss of the cap 15 on the outside of the bottom of the outer tank 18, and the other end passes through the bottom of the outer tank 18 and the inner cavity of the connector 13 before extending into the inner tank 9, with the top of the long push rod abutting against the top of the inner tank 9. The long push rod is coaxially arranged with the inner tank 9 and the connector 13.

[0064] Preferably, the long push rod can be a stepped rod, with its upper diameter being smaller than its lower diameter. The upper end of the long push rod has a push plate 10.2, the diameter of which is larger than the upper diameter of the long push rod.

[0065] When the long push rod is pressed, it pushes the inner tank 9 and the connector 13 apart through the push plate 10.2, causing component A 8 and component B 17 to mix. When the lower part of the long push rod abuts against the transverse annular boss 13.5, it indicates that the inner tank 9 and the connector 13 are in the maximum separation state.

[0066] Although the principles of this utility model have been described in detail above with reference to preferred embodiments, those skilled in the art should understand that the above embodiments are merely illustrative explanations of the implementation of this utility model and are not intended to limit the scope of this utility model. The details in the embodiments do not constitute a limitation on the scope of this utility model. Any obvious changes, such as equivalent transformations or simple substitutions, based on the technical solution of this utility model without departing from its spirit and scope fall within the protection scope of this utility model.

Claims

1. A two-component aerosol can, characterized in that, The aerosol can includes a nozzle (1), an inner can (9), a push rod, a connector (13), and an outer can (18); wherein the inner can (9) is used to store component A (8), and the outer can (18) is used to store component B (17); the inner diameter of the outer can (18) is larger than the outer diameter of the inner can (9); Inside the outer can (18), the inner can (9) is invertedly mounted on the bottom end of the outer can (18) via the connector (13); the inner can (9) closes the opening via the connector (13); the connector (13) has an inner cavity; One end of the push rod is located outside the outer tank (18), and the other end passes through the bottom of the outer tank (18) and the inner cavity of the connector (13) and extends into the inner tank (9), with the top end of the push rod abutting against the inner tank (9); the push rod, the inner tank (9), and the connector (13) are coaxially arranged; a second annular groove (10.1) is provided on the push rod inside the connector (13) for installing a sealing ring (11), and the sealing ring (11) is used to achieve a seal between the push rod and the connector (13); pressing the push rod can push the inner tank (9) to separate from the connector (13), thereby achieving the mixing of component A (8) and component B (17); the mixture of component A (8) and component B (17) is sprayed out by the nozzle (1) located at the top of the outer tank (18).

2. The two-component aerosol can according to claim 1, characterized in that, The push rod is a long push rod, or it consists of an inner push rod (10) and an outer push rod (14); The inner push rod (10) is coaxially placed inside the inner tank (9), the top end of the inner push rod (10) abuts against the inner tank (9), the lower part of the inner push rod (10) is inserted into the inner cavity of the connector (13) from above, and the lower part of the inner push rod (10) is provided with the second annular groove (10.1); The outer push rod (14) passes through the bottom end of the outer tank (18) and is inserted into the inner cavity of the connector (13) from below. The top surface of the outer push rod (14) abuts against the bottom surface of the inner push rod (10). The inner push rod (10), the outer push rod (14) and the inner tank (9) are coaxially arranged. The outer push rod (14) pushes the inner tank (9) and the connector (13) apart through the inner push rod (10).

3. The two-component aerosol can according to claim 2, characterized in that, The connector (13) includes an upper support pipe (13.1), a lower support pipe (13.2), a flange (13.3), and a longitudinal annular boss (13.4). The upper support pipe (13.1) and the lower support pipe (13.2) are coaxially arranged vertically at the center of the flange (13.3), and the upper support pipe (13.1) and the lower support pipe (13.2) are hollow structures with their inner cavities communicating with each other. The longitudinal annular boss (13.4) is coaxially arranged at the upper end of the flange (13.3). On the surface, the outer diameter of the longitudinal annular boss (13.4) matches the inner diameter of the inner tank (9), and the distance between the outer end of the longitudinal annular boss (13.4) and the outer end of the flange (13.3) is not less than the wall thickness of the inner tank (9); the inner tank (9) is upside down on the flange (13.3) and sleeved on the longitudinal annular boss (13.4); the lower part of the inner push rod (10) is inserted into the upper support tube (13.1), and the outer push rod (14) is inserted into the lower support tube (13.2).

4. The two-component aerosol can according to claim 3, characterized in that, The connector (13) further includes a transverse annular boss (13.5), which is installed at the bottom of the inner cavity of the upper support tube (13.1). The inner diameter of the transverse annular boss (13.5) is smaller than the inner diameter of the lower support tube (13.2).

5. The two-component aerosol can according to claim 4, characterized in that, The external push rod (14) consists of an upper straight rod and a lower straight rod; the diameter of the lower straight rod is greater than the inner diameter of the transverse annular boss (13.5) and the diameter of the upper straight rod, and the height of the longitudinal annular boss (13.4) is less than the height of the upper straight rod and the height of the upper support tube (13.1); the diameter of the upper straight rod is smaller than the diameter of the lower straight rod, and the diameter of the lower straight rod matches the inner diameter of the lower support tube (13.2).

6. The two-component aerosol can according to claim 3, characterized in that, The longitudinal annular boss (13.4) has a first annular groove (13.6) on its outer circumference for installing a sealing ring (12), which is used to achieve a seal between the longitudinal annular boss (13.4) and the inner tank (9).

7. The two-component aerosol can according to claim 1, characterized in that, A return spring (22) is sleeved on the push rod in the lower part of the inner cavity of the connector (13). The bottom end of the connector (13) is provided with a third annular groove. The second sealing gasket (23) is embedded in the third annular groove and tightly sleeved on the push rod to achieve a seal between the connector (13) and the push rod, and to prevent the return spring (22) from disengaging from the connector (13).

8. The two-component aerosol can according to claim 1, characterized in that, The upper part of the push rod is provided with a push plate (10.2), the diameter of the push plate (10.2) is larger than the diameter of the push rod; the top of the push plate (10.2) abuts against the top of the inner tank (9); the shape of the push plate (10.2) matches the shape of the top of the inner tank (9).

9. The two-component aerosol can according to claim 1, characterized in that, The inner tank (9) and the connector (13) are connected by snap-fit, interference fit, sealing ring connection or hot-press connection.

10. The two-component aerosol can according to claim 1, characterized in that, The aerosol can also include a normally closed spring-loaded valve and a liquid inlet tube (7); the normally closed spring-loaded valve is installed at the top of the outer can (18), the nozzle (1) is connected to the liquid inlet tube (7) through the normally closed spring-loaded valve, and the input end of the liquid inlet tube (7) extends to the bottom of the outer can (18).

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