Foaming plug
By designing a linkage structure for the main rod assembly, sealing assembly, and fixing assembly, the problems of inconvenient disassembly and assembly of the foam plug and inconvenient replacement of silicone sealing material in solar water heaters are solved. This enables rapid installation of the foam plug and easy replacement of the silicone ring, improving the sealing effect and heat preservation performance.
Patent Information
- Application Number
- CN202423201078.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-25
AI Technical Summary
The existing solar water heaters have inconvenient foam plugs to install and remove, and the silicone sealing material is also inconvenient to replace, which affects the sealing effect and heat preservation performance.
Design a foam plug comprising a main rod assembly, a sealing assembly, and a fixing assembly. Utilize the linkage structure of the base, fixing clip, and fixing ring to achieve a sealing assembly that allows for quick fixing and easy replacement of the silicone ring, ensuring both sealing performance and stability.
It enables quick installation and removal of the foam plug and convenient replacement of the silicone ring, improving the sealing effect and heat preservation performance, and ensuring the sealing and stability of the foam plug during long-term use.
Smart Images

Figure CN223550658U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of solar water tank foaming technology, and more specifically to a foaming plug. Background Technology
[0002] The foam plug technology used in solar water heaters primarily targets the insulation layer of the water tank. Traditional foam plugs often employ an eccentric moving claw fixing structure, which is cumbersome to operate and cannot guarantee consistent tension for each plug. With technological innovation, various new types of foam plugs have emerged, such as those utilizing the expansion properties of rubber under compression for sealing, and those using an expandable body to expand and lock within the inner wall of the heat-conducting blind pipe of the inner tank. These advancements improve sealing performance and installation efficiency.
[0003] The foam plug technology in solar water heaters is a key component ensuring effective heat insulation of the water tank's insulation layer. Traditional foam plug designs often use an eccentric, movable claw fixing structure. This structure requires manual adjustment of the claw's position to secure the foam plug, a relatively cumbersome process. Furthermore, the difficulty in uniformly applying tension to the foam plug by the claw can lead to uneven foaming of the insulation layer, affecting the insulation effect. The new foam plug utilizes the property of silicone material to expand under pressure. Through a specially designed sealing structure, the foam plug can tightly fit the heat-conducting blind pipe inside the water tank during installation, thus achieving an effective seal.
[0004] Although the existing device has many beneficial effects, it still has the following problems: the device is inconvenient to disassemble during use, which delays the installation of solar water heaters; secondly, although a sealing component is provided, the silicone may age and become inconvenient to replace after a long period of use, and it may not be able to be combined with the fixing component. Therefore, it needs to be improved. In view of this, we propose a foam plug. Utility Model Content
[0005] 1. Technical problems to be solved
[0006] The purpose of this invention is to provide a foam plug to solve the problems mentioned in the background art, such as inconvenient disassembly and assembly and the lack of obvious inconvenience in replacing silicone sealing materials.
[0007] 2. Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] A foam plug includes: a main rod assembly, a sealing assembly disposed on the outer circumferential wall of the main rod assembly, and a fixing assembly disposed on the outer circumferential wall of the main rod assembly;
[0010] in;
[0011] The main rod assembly includes a main rod, a fixing block 1 at the bottom of the main rod, a rotating frame fixed at the bottom of the fixing block 1, an extension rod sleeved on the top of the main rod, a base sleeved on the outer circumference of the extension rod, a limiting post fixed on the top of the base, multiple fixing blocks 2 fixed on the top of the base, fixing clips on both sides of the fixing blocks 2, a tension rod on the side of the fixing clips, a support member fixed on the top of the extension rod, and multiple protruding posts fixed on the side of the support member.
[0012] A sealing assembly, the sealing assembly including a waterproof seat disposed on the outer circumference of the main rod assembly, a silicone ring being fitted on the top of the waterproof seat, and a fixing ring being fixed on the bottom of the waterproof seat;
[0013] The fixing component includes a fixing ring II disposed on the outer circumferential wall of the main rod assembly.
[0014] Preferably, a fixing post is fixedly provided on the outer circumference of the main rod, a limiting ring is fixedly provided on the top of the fixing post, an extension post is fixedly provided on the top of the limiting ring, and a thread is provided on the outer circumference of the fixing post.
[0015] Preferably, the bottom of the base is provided with a rubber ring, the size of which matches the base.
[0016] Preferably, a support block is fixed to the side of the tension rod, and the length of the support block matches the fixing clip.
[0017] Preferably, the top of the waterproof seat is fixed with an extension edge, the size of which matches the size of the silicone ring.
[0018] Preferably, the inner cavity sidewalls of the first and second fixing rings are provided with threaded grooves, which match the threads on the outer circumferential wall of the fixing column.
[0019] Preferably, the second fixing ring has an inner hole groove inside, and the outer circumferential wall of the second fixing ring has multiple strip grooves.
[0020] 3. Beneficial effects
[0021] Compared with existing technologies, the advantages of this utility model are:
[0022] This utility model adds a base to the main rod assembly, and uses the fixing clip on the fixing block two at the top of the base and the linkage clip of the tension rod to connect with the hole of the solar water heater. Then, the fixing block one and the rotating frame press down and rotate to make the fixing ring two and the fixing column bite each other to fix the foam plug, thereby achieving the purpose of stabilizing the foam plug.
[0023] Secondly, the retaining ring engages with the retaining post, and the silicone ring is fixed by the extended edge at the top of the retaining ring to enhance the sealing effect. At the same time, it is easy to disassemble and replace the silicone ring to ensure that the sealing performance remains good even in long-term use. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of a foaming plug according to the present invention;
[0025] Figure 2 This is a schematic diagram showing the disassembled main rod assembly of a foaming plug according to this utility model;
[0026] Figure 3 This is a schematic diagram showing the disassembled sealing assembly of a foam plug according to the present invention;
[0027] Figure 4 This is a schematic diagram showing the disassembled fixing component of a foam plug according to the present invention;
[0028] The following are the labeling instructions in the diagram: 100, Main rod assembly; 110, Main rod; 111, Fixing post; 112, Limiting ring; 113, Extension post; 120, Fixing block one; 130, Rotating frame; 140, Extension rod; 150, Base; 151, Rubber ring; 152, Fixing block two; 153, Limiting post; 160, Fixing clip; 170, Tension rod; 180, Support component; 190, Protruding post; 200, Sealing assembly; 210, Waterproof seat; 220, Extension edge; 230, Silicone ring; 240, Fixing ring one; 300, Fixing assembly; 310, Fixing ring two; 320, Inner groove; 330, Strip groove. Detailed Implementation
[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0030] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.
[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] A type of foam plug, please refer to Figures 1-4 It includes: a main rod assembly 100, a sealing assembly 200 disposed on the outer circumference of the main rod assembly 100, and a fixing assembly 300 disposed on the outer circumference of the main rod assembly 100;
[0033] in;
[0034] The main rod assembly 100 includes a main rod 110, a rotating frame 130 tightly welded to the bottom of a fixing block 120, an extension rod 140 sleeved on the top of the main rod 110, and the extension rod 140 can move up and down inside the main rod 110. The fixing block 120 is tightly welded to the bottom of the extension rod 140. A base 150 is sleeved on the outer circumference of the extension rod 140. A limit post 153 is tightly welded to the top of the base 150. Multiple fixing blocks 152 are tightly welded to the top of the base 150. An extension post 113 is tightly welded to the bottom of the base 150. Fixing clips 160 are rotatably connected to both sides of the fixing blocks 152. A tension rod 170 is rotatably connected to the side of the fixing clips 160. A support member 180 is tightly welded to the top of the extension rod 140. Multiple protruding posts 190 are tightly welded to the side of the support member 180.
[0035] The sealing assembly 200 includes a waterproof seat 210 disposed on the outer circumference of the main rod assembly 100, a silicone ring 230 sleeved on the top of the waterproof seat 210, and a fixing ring 240 tightly welded to the bottom of the waterproof seat 210.
[0036] The fixing component 300 includes a fixing ring 310 disposed on the outer circumference of the main rod assembly 100.
[0037] Meanwhile, in order to facilitate the fixing of the foam plug, specifically, a fixing post 111 is tightly welded to the outer circumference of the main rod 110, a limiting ring 112 is tightly welded to the top of the fixing post 111, an extension post 113 is tightly welded to the top of the limiting ring 112, and a thread is provided on the outer circumference of the fixing post 111.
[0038] Furthermore, to improve the sealing effect of the foam plug, a rubber ring 151 is fitted on the bottom of the base 150, and the size of the rubber ring 151 matches that of the base 150.
[0039] It is worth noting that, in order to make the tension rod 170 more stable, a support block is tightly welded to the side of the tension rod 170, and the length of the support block matches that of the fixing clip 160.
[0040] It is worth noting that, in order to facilitate the installation of the silicone ring 230, specifically, the top of the waterproof seat 210 is tightly welded with an extension edge 220, the size of which matches the size of the silicone ring 230;
[0041] In some embodiments, the silicone ring 230 and rubber ring 151, as key sealing components, are endowed with specific materials and functions. The silicone ring 230 is made of high-quality food-grade fumed silica rubber, a material with excellent high-temperature resistance, low-temperature resistance, and chemical stability, maintaining its elasticity and sealing performance under extreme temperature conditions (-55°C to +200°C). Furthermore, fumed silica rubber also possesses good biocompatibility and is odorless and non-toxic. The rubber ring 151 is made of high-quality natural or synthetic rubber materials, which have excellent elasticity and abrasion resistance, providing a durable and reliable seal for routine sealing needs. The bottom of the rubber ring 151 is fixed to the base 150, and its dimensions match the base 150, ensuring a tight and stable seal.
[0042] Next, in order to install the first fixing ring 240 and the second fixing ring 310, specifically, the inner cavity sidewalls of the first fixing ring 240 and the second fixing ring 310 are provided with threaded grooves, which match the threads on the outer circumference of the fixing post 111.
[0043] Subsequently, in order to facilitate unscrewing the second fixing ring 310, specifically, the second fixing ring 310 has an inner hole groove 320 inside and multiple strip grooves 330 on the outer circumference of the second fixing ring 310.
[0044] When quick fixation is required, the main rod 110, fixing column 111, limiting ring 112, base 150 at the top of extension column 113, fixing block 152, and support 180 are inserted into the hole to be sealed. Fixing block 120 and rotating frame 130 adjust the length of extension rod 140. When pressed inward, the support 180 is supported by extension rod 140, which pulls the tension rod 170 connected to the protruding column 190 on the support 180. This causes the tension rod 170 and fixing clip 160 to be straightened and placed into the hole. When pulled outward, the protruding column 190 on the support 180 causes the tension rod 170 and fixing clip 160 to fold, thereby locking the hole. The inner groove 320 of the inner wall of the bottom fixing ring 310 is rotated and fixed to the fixing column 111, thus fixing the extension rod 140 connected to the fixing ring 310, thereby achieving a stable fixation effect.
[0045] Working principle:
[0046] When this device is in operation, the foam plug consists of a main rod assembly 100, a sealing assembly 200, and a fixing assembly 300. First, the main rod 110, fixing post 111, limiting ring 112, base 150 at the top of the extension post 113, limiting post 153, support 180, protruding post 190, fixing clip 160, and tension rod 170 are stably inserted into the hole to be sealed. With the insertion of the main rod 110, the sealing assembly 200 can begin to be fixed. The waterproof seat 210 and the silicone ring 230 fit tightly against the hole wall, forming a preliminary waterproof seal. Simultaneously, the extension edge 220 further enhances the sealing effect of the silicone ring 230, preventing it from shifting, and the fixing ring 240 is rotated and fixed to the outer circumference of the fixing post 111, stabilizing the silicone ring 230. Subsequently, the fixing ring 310 of the fixing assembly 300, through the threaded groove on its inner cavity sidewall, tightly engages with the fixing post 111 on the main rod 110 and the thread, causing the fixing clip 160 on the fixing block 152 at the top of the base 150 and the tension rod 170 to move up and down due to the extension rod 140. This movement is followed by the protruding post 190 on the support member 180 connected to the extension rod 140, causing the fixing clip 160 and the tension rod 170 to fold, thereby gripping the inner cavity opening of the water heater and firmly fixing the foam plug in the hole. The strip groove 330 on the fixing ring 310 increases friction, making it less prone to slippage when twisted, ensuring reliable fixing, and allowing further adjustment of the foam plug's tightness and sealing effect. The entire foam plug design is reasonable, with a simple and efficient workflow, ensuring excellent sealing performance.
[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A foam stopper, characterized in that, Includes: a main rod assembly (100), a sealing assembly (200) disposed on the outer circumference of the main rod assembly (100), and a fixing assembly (300) disposed on the outer circumference of the main rod assembly (100); in; A main rod assembly (100) includes a main rod (110), a fixing block (120) at the bottom of the main rod (110), a rotating frame (130) fixed at the bottom of the fixing block (120), an extension rod (140) sleeved on the top of the main rod (110), a base (150) sleeved on the outer circumference of the extension rod (140), a limiting post (153) fixed on the top of the base (150), a plurality of fixing blocks (152) fixed on the top of the base (150), fixing clips (160) on both sides of the fixing blocks (152), a tension rod (170) on the side of the fixing clips (160), a support member (180) fixed on the top of the extension rod (140), and a plurality of protruding posts (190) fixed on the side of the support member (180). A sealing assembly (200) includes a waterproof seat (210) disposed on the outer circumference of the main rod assembly (100), a silicone ring (230) is sleeved on the top of the waterproof seat (210), and a fixing ring (240) is fixed on the bottom of the waterproof seat (210). The fixing component (300) includes a fixing ring (310) disposed on the outer circumferential wall of the main rod assembly (100).
2. The foam stopper according to claim 1, characterized in that: A fixing post (111) is fixedly provided on the outer circumference of the main rod (110), a limiting ring (112) is fixedly provided on the top of the fixing post (111), an extension post (113) is fixedly provided on the top of the limiting ring (112), and a thread is provided on the outer circumference of the fixing post (111).
3. A foaming plug according to claim 2, characterized in that: The bottom of the base (150) is provided with a rubber ring (151), the size of which matches the base (150).
4. A foaming plug according to claim 3, characterized in that: A support block is fixed to the side of the tension rod (170), and the length of the support block matches that of the fixing clip (160).
5. A foaming plug according to claim 4, characterized in that: The top of the waterproof seat (210) is fixed with an extension edge (220), the size of which matches the size of the silicone ring (230).
6. A foaming plug according to claim 5, characterized in that: The inner cavity sidewalls of the first fixing ring (240) and the second fixing ring (310) are provided with threaded grooves, which match the threads on the outer circumference of the fixing column (111).
7. A foaming plug according to claim 6, characterized in that: The second fixing ring (310) has an inner hole groove (320) inside, and the outer circumferential wall of the second fixing ring (310) has multiple strip grooves (330).