A quick-sealing device for pipe ends with flanges
By designing a quick-sealing device with flanged pipe ends, and utilizing a combination of C-hooks and eccentric handles, the problem of unreliable sealing of flanged pipe ends in high-temperature and strong acid/alkali environments is solved. This achieves easy disassembly and assembly, as well as efficient sealing, thus expanding the application range.
Patent Information
- Application Number
- CN202522552702.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-01
AI Technical Summary
The existing flange sealing method is easily damaged or contaminated in high temperature and strong acid and alkali environments, and disassembly is cumbersome, affecting production efficiency.
A quick sealing device including a pressure plate and a clamping device was designed. It uses a C-hook, an eccentric handle and a rotating pin to achieve sealing and disassembly. It adopts a high-temperature and corrosion-resistant sealing gasket material and incorporates a self-locking design to adapt to different working environments.
It achieves effective sealing in high temperature and strong acid and alkali environments, and is easy to disassemble and assemble, thus improving production efficiency and application range.
Smart Images
Figure CN224944443U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to sealing devices, and more particularly to a quick sealing device with a flanged pipe. Background Technology
[0002] Currently, many devices connect to other pipelines or equipment via flanged metal pipes, forming a closed cavity inside. During processing or when testing for tightness, it is necessary to temporarily plug the pipe opening. A common method is to add a soft plug or a cap to the pipe opening and bolt it to the flange. The plug or cap is then removed after processing or testing. However, soft plugs, due to material limitations, may not withstand high temperatures or corrosion from strong acids and alkalis, and may even contaminate industrial reagents used in surface treatment. Locking caps is too cumbersome to disassemble, reducing production or testing efficiency. This invention designs a convenient sealing solution that can withstand high temperatures and corrosion from strong acids and alkalis, without contaminating the industrial surface treatment process. It overcomes the shortcomings of traditional sealing solutions and improves production or testing efficiency. Summary of the Invention
[0003] The purpose of this invention is to provide a quick sealing device for pipe ends with flanges, which has a good sealing effect and is easy to install and disassemble.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A quick-sealing device for a flanged pipe end includes a pressure plate and a clamping device. The pressure plate includes a pressure block, a positioning pin, and a sealing gasket. The pressure block is hollow, and the sealing gasket is placed inside the pressure block and fixed in the pressure block by the positioning pin thread. The clamping device includes a C-shaped hook, an eccentric handle, and a rotating pin. The C-shaped hook is C-shaped with a hole at one end. The eccentric wheel on the eccentric handle is hinged to the hole on the C-shaped hook through the rotating pin.
[0005] The upper part of the pressure block has a groove, and the inner side of the C-shaped hook opening is stepped.
[0006] The bottom of the eccentric handle and eccentric wheel is a flat surface.
[0007] The beneficial effects of this utility model are as follows: This invention features a simple structure and easy operation, requiring no external tools and significantly improving installation and disassembly efficiency. The addition of a self-locking design allows it to be used in environments with vibration, motion, and rotation, expanding its application range. It is also resistant to high temperatures and strong acids and alkalis, making it suitable for industrial production processes involving heating, drying, and strong acids or alkalis, such as spraying, impregnation with treatment agents, anodizing, and electrophoresis. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the exploded structure of this utility model; Figure 2 This is a schematic diagram of the pressure plate structure; Figure 3 This is a schematic diagram of the clamping device. Detailed Implementation
[0009] The present invention will be further described below with reference to the accompanying drawings.
[0010] See Figure 1-3 This utility model includes a pressure plate and a clamping device. The pressure plate includes a pressure block 1, a positioning post 2, and a sealing gasket 3. The pressure block 1 is hollow, and the sealing gasket 3 is placed inside the pressure block 1 and fixed in the pressure block 1 by the positioning post 2 through threads. The clamping device includes a C-shaped hook 4, an eccentric handle 5, and a rotating pin 6. The C-shaped hook 4 is C-shaped with a hole at one top. The eccentric wheel on the eccentric handle 5 is hinged to the hole on the C-shaped hook through the rotating pin 6. The pressure block 1 has a groove on its upper part, and the inner side of the opening side of the C-shaped hook 4 is stepped. The bottom of the eccentric wheel on the eccentric handle 5 is a flat surface.
[0011] In use, first place the pressure plate on the flange opening, with the positioning pin 2 acting as a guide, ensuring the sealing ring is aligned with the opening. Then, hook one end of the C-hook onto the flange face of the opening, and align the other end with the groove on the pressure block 1 via its stepped protrusion, providing guidance and fixation. The eccentric handle 5 is connected to the C-hook 4 via a rotating pin. The eccentric wheel of the eccentric handle presses against the outer surface of the pressure plate. Rotating the handle tightens the pressure plate, compressing the sealing ring and achieving a seal on the flange face of the opening.
[0012] Rotating the handle in the opposite direction gradually moves the eccentric wheel away from the pressure plate, releasing the pressure plate. Remove the C-hook 4 and pressure plate 1 to complete disassembly. The rotating pin 6 is fitted with a bushing 7, made of a self-lubricating and self-cleaning material that resists high temperatures and acid / alkali corrosion, leaving no chemical residue and ensuring smooth rotation. To maintain the relative positions of the pressure plate and the pipe opening, a positioning post is designed on pressure plate 1, extending into the pipe opening. To prevent the eccentric handle 5 from automatically springing open, the bottom plane of the eccentric wheel is a self-locking plane. To open the handle, the sealing ring must be tightened further to overcome its greater rebound force. As the handle's rotation angle gradually increases, the rebound force gradually rises until the handle reaches a critical angle, at which point the rebound force reaches its peak. Changing the elasticity and hardness of the sealing ring, as well as the size and position of the self-locking plane, can alter the peak value. If this sealing device is suitable for different vibration or centrifugal rotation environments, a corresponding peak self-locking force needs to be matched. Appropriate materials can be selected from the above factors, or the design can be modified.
[0013] The sealing ring 3 has a certain degree of elasticity; its thickness decreases under pressure and returns to its original thickness after the pressure is released. The shape of the sealing ring is basically the same as the flange face of the pipe opening. The sealing ring is made of a special inert silicone foam material, which can withstand high temperatures of 200-300 degrees Celsius and is not corroded in strong acid and alkali solutions.
[0014] This utility model has a wide range of applications, and is easy to assemble and disassemble with good sealing effect.
Claims
1. A flange-faced pipe spud quick seal apparatus, characterized by: It includes a pressure plate and a clamping device; the pressure plate includes a pressure block, a positioning pin, and a sealing gasket. The pressure block is hollow, and the sealing gasket is placed inside the pressure block and fixed in the pressure block by the positioning pin thread; the clamping device includes a C-shaped hook, an eccentric handle, and a rotating pin. The C-shaped hook is C-shaped with a hole at the top of one side. The eccentric wheel on the eccentric handle is hinged to the hole on the C-shaped hook through the rotating pin.
2. A flange-faced pipe nipple quick-seal device according to claim 1, characterized in that: The upper part of the pressure block has a groove, and the inner side of the C-shaped hook opening is stepped.
3. A flanged spout quick seal device according to claim 1 or 2, characterised in that: The bottom of the eccentric handle and eccentric wheel is a flat surface.