Threaded sealing accessory suitable for glassware
By employing a double-sealing structure and all-PTFE sealing material on glassware, the problems of wear and aging of sealing components are solved, achieving long-term stable sealing performance and reducing maintenance costs and the need for frequent replacements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-03-31
AI Technical Summary
Existing sealing fittings for glassware are prone to wear, aging, or deformation during long-term use, leading to a decline in sealing performance and increased maintenance and usage costs.
It adopts a double sealing structure, including a plug, sealing assembly and connecting spring. The relative movement of the upper and lower sealing discs is achieved by tightening the plug. Combined with full PTFE sealing material and anti-corrosion coating, it ensures sealing stability.
It achieves long-term sealing stability of glassware, avoids leakage and experimental data deviation, reduces maintenance and replacement frequency, and improves service life and sealing effect.
Smart Images
Figure CN224064824U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of glassware, and in particular to a threaded sealing fitting suitable for glassware. Background Technology
[0002] Glassware (such as reagent bottles and reaction vessels) is widely used in laboratories and industries, and its sealing performance directly affects the safety of stored substances. In existing technologies, common sealing fittings mostly use a single rubber gasket or a rigid threaded cap structure. These replaceable single rubber gaskets are prone to wear, aging, or deformation over long-term use, leading to a decline in sealing performance. This increases maintenance costs for users and may shorten the overall lifespan of the glassware. Insufficient durability may also require frequent replacement of the gasket within a short period, increasing both operating and time costs. Therefore, we propose a threaded sealing fitting suitable for glassware. Utility Model Content
[0003] To address the technical problem that existing replaceable single rubber gaskets are prone to wear, aging, or deformation during long-term use, this utility model provides a threaded sealing fitting suitable for glassware.
[0004] This utility model is achieved using the following technical solution: a threaded sealing fitting suitable for glassware, comprising:
[0005] The stopper has an external thread on its outer surface that matches the internal thread of the glassware opening.
[0006] A sealing assembly is fitted onto the surface of a plug head and includes, from top to bottom, a sealing head, an upper sealing ring, an upper sealing disc, a connecting spring, a lower sealing disc, and a lower sealing ring; the upper and lower sealing discs are elastically connected by the connecting spring, and the upper and lower sealing rings are respectively embedded in the annular grooves of the upper and lower sealing discs.
[0007] The upper and lower sealing discs are elastically connected by a connecting spring, and the upper and lower sealing rings are respectively embedded in the annular grooves of the upper and lower sealing discs.
[0008] As the stopper continues to tighten, the connecting spring is compressed, causing the upper and lower sealing discs to move relative to each other. This causes the upper sealing ring to deform against the inner wall of the stopper, and the lower sealing ring to deform against the end face of the vessel, thus achieving a double seal.
[0009] As a further improvement to the above solution, the stopper has an external thread on its outer surface that matches the internal thread of the glass vessel's opening. When the stopper is screwed into the opening of the glass vessel, the external thread engages with the internal thread of the vessel, pushing the sealing assembly downwards. The lower sealing ring first contacts the end face of the vessel's opening, forming an initial radial seal.
[0010] As a further improvement to the above solution, the sealing head is connected to the inner wall of the plug by a thread, and can be disassembled and replaced.
[0011] As a further improvement to the above solution, the elastic force of the connecting spring can automatically compensate for the deformation caused by wear of the sealing ring or temperature changes, ensuring long-term sealing stability.
[0012] As a further improvement to the above solution, the upper and lower sealing discs are annular metal discs with anti-corrosion coatings on their surfaces to prevent corrosion by chemical reagents.
[0013] As a further improvement to the above solution, O-rings are provided on the inner walls of both the upper and lower sealing discs. The O-rings, as well as the upper and lower sealing rings, are made entirely of PTFE sealing material. This improves the sealing performance and stability of the sealing rings, ensuring they maintain a good sealing effect even after long-term use and frequent replacements, thus preventing leakage and deviations in experimental data.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. This utility model, by continuously tightening the stopper, compresses the connecting spring, causing the upper and lower sealing discs to move relative to each other. This causes the upper sealing ring and the inner wall of the stopper, and the lower sealing ring and the end face of the vessel to be deformed simultaneously under pressure, achieving a double seal and ensuring the tightness of the seal.
[0016] 2. Both the upper and lower sealing discs of this utility model are provided with O-rings on their inner walls. The O-rings, as well as the upper and lower sealing rings, are made of PTFE sealing material. This improves the sealing performance and stability of the sealing rings, ensuring that they maintain a good sealing effect even after long-term use and frequent replacement, thus avoiding leakage and deviations in experimental data. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the disassembly and assembly structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the connection structure of the sealing assembly of this utility model.
[0020] Explanation of key symbols:
[0021] 1. Plug; 2. Sealing assembly; 21. Sealing head; 22. Upper sealing ring; 23. Upper sealing disc; 24. Connecting spring; 25. Lower sealing disc; 26. Lower sealing ring. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example 1:
[0023] Please combine Figures 1-3 This embodiment proposes a threaded sealing fitting suitable for glassware, comprising:
[0024] Stopper 1, the outer surface of stopper 1 is provided with an external thread that matches the internal thread of the mouth of the glassware;
[0025] The sealing assembly 2 is fitted onto the surface of the plug head 1 and includes a sealing head 21, an upper sealing ring 22, an upper sealing disc 23, a connecting spring 24, a lower sealing disc 25, and a lower sealing ring 26 connected sequentially from top to bottom.
[0026] Specifically, when the stopper 1 is screwed into the mouth of the glass vessel, the external thread engages with the internal thread of the vessel, pushing the sealing assembly 2 downward; the lower sealing ring 26 first contacts the end face of the vessel mouth, forming an initial radial seal; as the stopper 1 continues to tighten, the connecting spring 24 is compressed, causing the upper sealing plate 23 and the lower sealing plate 25 to move relative to each other, so that the upper sealing ring 22 and the inner wall of the stopper 1, and the lower sealing ring 26 and the end face of the vessel are simultaneously compressed and deformed, achieving a double seal;
[0027] It should be noted that the sealing head 21 is connected to the inner wall of the plug head 1 by threads and can be disassembled and replaced.
[0028] The upper sealing disc 23 and the lower sealing disc 25 are elastically connected by a connecting spring 24. The upper sealing ring 22 and the lower sealing ring 26 are respectively embedded in the annular grooves of the upper sealing disc 23 and the lower sealing disc 25. The elastic force of the connecting spring 24 can automatically compensate for the deformation caused by wear of the sealing ring or temperature changes, ensuring long-term sealing stability.
[0029] It should be noted that the upper sealing disc 23 and the lower sealing disc 25 are annular metal discs with anti-corrosion coatings on their surfaces to prevent corrosion by chemical reagents.
[0030] Furthermore, O-rings are provided on the inner walls of both the upper sealing disc 23 and the lower sealing disc 25. The O-rings, as well as the upper sealing ring 22 and the lower sealing ring 26, are all made of PTFE sealing material. This improves the sealing performance and stability of the sealing rings, ensuring that they maintain a good sealing effect even after long-term use and frequent replacements, thus avoiding leakage and deviations in experimental data.
[0031] Specific implementation steps of this utility model:
[0032] When the stopper 1 is screwed into the mouth of the glassware, the external thread engages with the internal thread of the glassware, pushing the sealing assembly 2 downwards. The lower sealing ring 26 first contacts the end face of the glassware mouth, forming an initial radial seal. As the stopper 1 continues to tighten, the connecting spring 24 is compressed, causing the upper sealing plate 23 and the lower sealing plate 25 to move relative to each other, so that the upper sealing ring 22 and the inner wall of the stopper 1, and the lower sealing ring 26 and the end face of the glassware are simultaneously compressed and deformed, achieving a double seal.
[0033] Both the upper sealing disc 23 and the lower sealing disc 25 are equipped with O-rings on their inner walls. The O-rings, as well as the upper sealing ring 22 and the lower sealing ring 26, are made of PTFE sealing material. This improves the sealing performance and stability of the sealing rings, ensuring that they maintain a good sealing effect even after long-term use and frequent replacement, thus avoiding leakage and deviations in experimental data. The elastic force of the connecting spring 24 can automatically compensate for the deformation caused by wear or temperature changes of the sealing rings, ensuring long-term sealing stability.
[0034] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A threaded sealing fitting suitable for use with glassware, characterized in that, The application relates to a glassware sealing plug, which comprises the following parts: a plug head (1) with an outer thread matched with the inner thread of the mouth of a glassware; a sealing assembly (2) sleeved on the surface of the plug head (1) and comprising, from top to bottom, a sealing head (21), an upper sealing ring (22), an upper sealing disc (23), a connecting spring (24), a lower sealing disc (25) and a lower sealing ring (26); the upper sealing disc (23) and the lower sealing disc (25) are elastically connected through the connecting spring (24), and the upper sealing ring (22) and the lower sealing ring (26) are respectively embedded in annular grooves of the upper sealing disc (23) and the lower sealing disc (25).
2. A threaded sealing fitting for glassware as defined in claim 1, wherein, The upper sealing disc (23) and the lower sealing disc (25) are annular metal discs, and the surfaces of the upper sealing disc (23) and the lower sealing disc (25) are provided with anticorrosion coating.
3. A threaded sealing fitting for glassware as defined in claim 1, wherein, The inner walls of the upper sealing disc (23) and the lower sealing disc (25) are respectively provided with O-shaped sealing rings, and the O-shaped sealing rings, the upper sealing ring (22) and the lower sealing ring (26) are all made of full-tetrafluoro sealing material.
4. A threaded sealing fitting for glassware as defined in claim 1, wherein, The sealing head (21) is threadedly connected with the inner wall of the plug head (1) and can be replaced.