Highly sealed flange connection structure of float ball liquid level meter

Through innovative design of locking and sealing components, the problems of cumbersome installation and insufficient sealing of traditional float level gauge flange connection structures have been solved, achieving high sealing performance and stability, and ensuring safe operation in corrosive and explosive environments.

CN224364513UActive Publication Date: 2026-06-16SHANDONG HECHUANG AUTOMATIC CONTROL INSTR CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG HECHUANG AUTOMATIC CONTROL INSTR CO LTD
Filing Date
2025-08-28
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Traditional float level gauges with flange connections are cumbersome to install, and their sealing performance is easily affected by deviations. They are difficult to guarantee sealing performance in corrosive and explosive liquid environments, posing safety hazards.

Method used

The design incorporates a combination of locking and sealing components, including a fixing rod, fixing plate, button, moving block, spring, rotating shaft, and sealing gasket. The button operation enables quick flange fixing and multi-layer sealing, while the spring's rebound force and the sealing gasket's tight fit within the groove enhance the sealing effect.

Benefits of technology

It simplifies the flange connection process, improves sealing and stability, reduces the impact of installation deviations on the seal, and ensures safety and product quality in corrosive and explosive environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to mechanical engineering technical field discloses a kind of high sealing's float ball liquid level meter flange connecting structure, including connecting shaft, the connecting shaft outer wall is provided with locking assembly, the connecting shaft outer wall is provided with sealing assembly, the locking assembly includes fixed rod, the fixed rod is arranged in connecting shaft outer wall, the fixed rod outer wall is threadedly connected with fixed disc, the fixed disc outer wall is fixedly connected with handle two, the fixed rod one end is fixedly connected with circular module, the circular module upper surface is fixedly connected with handle one, the circular module inner wall is slidably connected with button. In the utility model, button is connected with fixed rod, fixed movement is carried out through fixed rod, synchronous movement is driven by closely connected moving round block when button is pressed, solve the problem that traditional flange connection installation process is complicated, bolt hole needs accurate alignment, any one link deviation can affect sealing effect.
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Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and in particular to a high-sealing float level gauge flange connection structure. Background Technology

[0002] Accurate liquid level measurement is crucial for ensuring the stable and efficient operation of industrial processes in numerous stages of production. Float level gauges, as commonly used liquid level measuring instruments, are widely applied in industries such as chemical, petroleum, and food and beverage. The sealing mechanism within their flange connection structure is a key component ensuring the reliable operation of the level gauge. In chemical production, many liquids possess corrosive, flammable, and explosive properties. Failure of the sealing mechanism can lead to serious safety accidents, such as chemical leaks and explosions, threatening not only human lives but also causing irreparable environmental damage. In the food and beverage industry, poor sealing can result in product contamination, affecting product quality and consumer health. Therefore, developing a highly effective sealing mechanism for the flange connection structure of float level gauges is of significant practical importance for improving the accuracy of liquid level measurement, ensuring production safety, and maintaining product quality.

[0003] The sealing mechanism in a traditional float level gauge flange connection primarily relies on a flat gasket and a bolt fastening system. The gasket, typically made of rubber, asbestos rubber, or PTFE, is placed between the sealing surfaces of the two connected flanges. These materials have a degree of elasticity, capable of filling minor gaps in the flange sealing surfaces to some extent and preventing liquid leakage. The bolt fastening system applies pressure to the gasket by tightening the bolts to ensure a tight fit between the two flanges. In practical operation, when the float level gauge is installed on a container, the liquid pressure inside the container acts on the flange connection.

[0004] Traditional flange connection installation is cumbersome, requiring precise alignment of bolt holes and tightening of bolts one by one. Any deviation in any step may affect the sealing effect. Because it is difficult to achieve absolute flatness during the processing of flange sealing surfaces, the gasket and flange sealing surfaces cannot be completely tightly fitted. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-sealing float level gauge flange connection structure, which aims to improve the problem that the traditional flange connection installation process is cumbersome, requires precise alignment of bolt holes and tightening of bolts one by one, and any deviation in any step may affect the sealing effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-sealing float level gauge flange connection structure, including a connecting shaft, a locking component and a sealing component provided on the outer wall of the connecting shaft, the locking component including a fixing rod, the fixing rod being disposed on the outer wall of the connecting shaft, a fixing disc being threadedly connected to the outer wall of the fixing rod, a second handle being fixedly connected to the outer wall of the fixing disc, a circular module being fixedly connected to one end of the fixing rod, a first handle being fixedly connected to the upper surface of the circular module, a button being slidably connected to the inner wall of the circular module, a movable circular block being fixedly connected to the outer wall of the button, a first spring being fixedly connected to the outer wall of the movable circular block, a fixing rod being fixedly connected to the other end of the first spring, a rotating shaft being rotatably connected to the inner wall of the fixing rod, and a locking module being fixedly connected to the outer wall of the rotating shaft.

[0007] Furthermore, the sealing assembly includes a flange module, which is fixedly connected to the outer wall of the connecting shaft. A second spring is fixedly connected to the inner wall of the flange module, and a sealing gasket is fixedly connected to one end of the second spring. The outer wall of the sealing gasket is fitted with the flange module. A fixing module is slidably connected to the inner wall of the flange module. A sealing strip is fixedly connected to the upper surface of the flange module, and a groove is formed inside the flange module.

[0008] Furthermore, a sealing gasket is provided inside the flange module, and the sealing gasket is fixedly connected to the outer wall of the connecting shaft.

[0009] Furthermore, the connecting shaft is fixedly connected to the inner wall of the sealing strip, and the connecting shaft is disposed on one side of the outer wall of the fixed module.

[0010] Furthermore, the connecting shaft is disposed on one side of the outer wall of the second spring, and the second spring is fixedly connected to the inner wall of the flange module.

[0011] Furthermore, the fixing rod is slidably connected to the inner wall of the button, the button is located above the locking module, and the locking module is located on the outer wall of the moving circular block.

[0012] Furthermore, the flange module is fixedly connected to the outer wall of the fixing rod, and the flange module is attached to the outer wall of the fixing plate.

[0013] Furthermore, the fixing rod is positioned below the first handle, and the outer wall of the fixing rod is provided with a second handle.

[0014] This utility model has the following beneficial effects:

[0015] In this invention, when using a high-sealing float level gauge flange connection structure, first press the button. The button is connected to the fixed rod, which is fixed and moved by the fixed rod. Pressing the button will drive the moving block that is tightly connected to it to move synchronously. The moving block will squeeze the first spring. At the same time, the moving block will drive the locking module to move. The locking module is fixed and rotated by the rotating shaft, which is also firmly fixed by the fixed rod. When the button is released, the first spring will rebound. The rebound of the first spring will drive the moving block to move in the opposite direction. During the movement, the moving block will squeeze the locking module. When the locking module is squeezed, it can expand outward. By rotating the second handle, the fixed plate can be rotated to effectively fix the upper surface of the flange.

[0016] In this invention, when connecting the flange, the fixing module is first moved by pushing it. After the fixing module moves, the spring will squeeze the sealing gasket, squeezing it into a specific groove in the flange module. When the sealing gasket is squeezed into the groove, it can fit tightly against the groove wall, thereby achieving an internal sealing effect. When it is necessary to retract the sealing gasket, press the sealing gasket back to its initial position, and then pull out the fixing module. The pulling out action of the fixing module can release the squeezing of the sealing gasket. Sealing strips are provided on both the top and bottom of the flange module to form a multi-layer sealing effect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a high-sealing float level gauge flange connection structure proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the fixed rod portion of the flange connection structure of a high-sealing float level gauge proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the locking module of the flange connection structure of a high-sealing float level gauge proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of the flange portion of a high-sealing float level gauge flange connection structure proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the sealing gasket portion of the flange connection structure of a high-sealing float level gauge proposed in this utility model.

[0022] Legend:

[0023] 1. Connecting shaft; 2. Flange module; 3. Fixing rod; 4. Handle one; 5. Button; 6. Handle two; 7. Fixing plate; 8. Locking module; 9. Rotating shaft; 10. Spring one; 11. Moving round block; 12. Sealing strip; 13. Fixing module; 14. Sealing gasket; 15. Spring two; 16. Circular module. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1-3 This utility model provides an embodiment of a high-sealing float level gauge flange connection structure, including a connecting shaft 1. A locking assembly and a sealing assembly are provided on the outer wall of the connecting shaft 1. The locking assembly includes a fixing rod 3, which guides the movement of a fixing button 5 and provides fixed support for a rotating shaft 9, ensuring the stability of the entire structure during operation. The fixing rod 3 is located on the outer wall of the connecting shaft 1, and a fixing disc 7 is threadedly connected to its outer wall. The fixing disc 7, driven by a second handle 6, adheres to and fixes the upper surface of the flange, working together with the locking module 8 to ensure a stable flange connection. A second handle 6 is fixedly connected to the outer wall of the fixing disc 7. A circular module 16 is fixedly connected to one end of the fixing rod 3. A first handle 4 is fixedly connected to the upper surface of the circular module 16. A button 5 is slidably connected to the inner wall of the circular module 16, allowing the operator to apply external force. A movable circular block 11 is fixedly connected to the outer wall of button 5. The movable circular block 11 moves under the action of button 5, compressing spring 10 and driving locking module 8. When spring 10 rebounds, it compresses locking module 8, thereby fixing locking module 8 to the lower surface of flange. Spring 10 is fixedly connected to the outer wall of movable circular block 11. Spring 10 stores and releases elastic potential energy to provide power for the reverse movement of movable circular block 11, thereby realizing the key action of locking module 8. A fixed rod 3 is fixedly connected to the other end of spring 10. A rotating shaft 9 is rotatably connected to the inner wall of fixed rod 3. The rotating shaft 9 provides a stable rotation axis for locking module 8, ensuring that the rotation action of locking module 8 is accurate and reliable. Locking module 8 is fixedly connected to the outer wall of rotating shaft 9. Under the action and compression of movable circular block 11, locking module 8 rotates around rotating shaft 9 and expands outward to fix the lower surface of flange.

[0026] Reference Figures 1-5The sealing assembly includes a flange module 2, which serves as the main part of the flange connection structure. A specific groove is provided in the flange module 2 for installing a gasket 14. Sealing strips 12 are positioned above and below the flange module 2 to enhance the sealing effect. The flange module 2 is fixedly connected to the outer wall of the connecting shaft 1. A spring 15 is fixedly connected to the inner wall of the flange module 2, and a gasket 14 is fixedly connected to one end of the spring 15. The outer wall of the gasket 14 is fitted with the flange module 2. A fixing module 13 is slidably connected to the inner wall of the flange module 2. A sealing strip 12 is fixedly connected to the upper surface of the flange module 2. A groove is provided inside the flange module 2, and the sealing strip 12 is positioned on the upper and lower surfaces of the flange module 2, filling the tiny gaps and forming a multi-layer seal with the gasket 14, improving the overall sealing performance. The gasket 14 is located inside the flange module 2. Under the compression of the spring 15, the gasket 14 fills the groove of the flange module 2, which is the core component for achieving internal sealing and directly preventing... To prevent media leakage, the sealing gasket 14 is fixedly connected to the outer wall of the connecting shaft 1, which is fixedly connected to the inner wall of the sealing strip 12. The connecting shaft 1 is located on one side of the outer wall of the fixing module 13. The fixing module 13 pushes to control the compression of the second spring 15, thereby controlling the position of the sealing gasket 14, facilitating sealing and replacement of the sealing gasket 14. The connecting shaft 1 is located on one side of the outer wall of the second spring 15, which provides compression force to the sealing gasket 14, enabling it to tightly fit into the groove of the flange module 2, achieving internal sealing. The second spring 15 is fixedly connected to the inner wall of the flange module 2. The fixing rod 3 is slidably connected to the inner wall of the button 5, which is located above the locking module 8. The locking module 8 is located on the outer wall of the moving round block 11. The flange module 2 is fixedly connected to the outer wall of the fixing rod 3 and fits against the outer wall of the fixing plate 7. The fixing rod 3 is located below the first handle 4, and the second handle 6 is located on the outer wall of the fixing rod 3.

[0027] Working principle: When using a high-sealing float level gauge flange connection structure, pressing button 5 moves the moving block 11. Button 5 is fixed by the fixed rod 3. The moving block 11 presses against the spring 10, and at the same time, it moves the locking module 8. The locking module 8 is fixed by the rotating shaft 9, which is fixed by the fixed rod 3. When button 5 is released, the spring 10 rebounds and moves the moving block 11. The moving block 11 presses against the locking module 8. When the locking module 8 is pressed, it expands outward to fix the lower surface of the flange. Rotating handle 6 moves the fixing plate 7 to fix the upper surface of the flange.

[0028] Furthermore, when the flange is connected, by pushing the fixing module 13 to move, the spring 15 squeezes the sealing gasket 14 after the fixing module 13 moves, squeezing the sealing gasket 14 into the groove opened in the flange module 2 to achieve an internal sealing effect. When it is necessary to retract the sealing gasket 14, the sealing gasket 14 is pressed back to its original position, and then the fixing module 13 is pulled out to fix the sealing gasket 14. Sealing strips 12 are provided on both the top and bottom of the flange module 2 to achieve a multi-layer sealing effect.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-sealing float level gauge flange connection structure, comprising a connecting shaft (1), characterized in that: The outer wall of the connecting shaft (1) is provided with a locking component, and the outer wall of the connecting shaft (1) is provided with a sealing component; The locking assembly includes a fixing rod (3), which is disposed on the outer wall of the connecting shaft (1). A fixing disc (7) is threadedly connected to the outer wall of the fixing rod (3). A handle (6) is fixedly connected to the outer wall of the fixing disc (7). A circular module (16) is fixedly connected to one end of the fixing rod (3). A handle (4) is fixedly connected to the upper surface of the circular module (16). A button (5) is slidably connected to the inner wall of the circular module (16). A movable circular block (11) is fixedly connected to the outer wall of the button (5). A spring (10) is fixedly connected to the outer wall of the movable circular block (11). A fixing rod (3) is fixedly connected to the other end of the spring (10). A rotating shaft (9) is rotatably connected to the inner wall of the fixing rod (3). A locking module (8) is fixedly connected to the outer wall of the rotating shaft (9).

2. The high-sealing float level gauge flange connection structure according to claim 1, characterized in that: The sealing assembly includes a flange module (2), which is fixedly connected to the outer wall of the connecting shaft (1). A second spring (15) is fixedly connected to the inner wall of the flange module (2). A sealing gasket (14) is fixedly connected to one end of the second spring (15). The flange module (2) is attached to the outer wall of the sealing gasket (14). A fixing module (13) is slidably connected to the inner wall of the flange module (2). A sealing strip (12) is fixedly connected to the upper surface of the flange module (2). A groove is opened inside the flange module (2).

3. The high-sealing float level gauge flange connection structure according to claim 2, characterized in that: The flange module (2) is provided with a sealing gasket (14), which is fixedly connected to the outer wall of the connecting shaft (1).

4. The high-sealing float level gauge flange connection structure according to claim 2, characterized in that: The connecting shaft (1) is fixedly connected to the inner wall of the sealing strip (12), and the connecting shaft (1) is set on one side of the outer wall of the fixed module (13).

5. The high-sealing float level gauge flange connection structure according to claim 2, characterized in that: The connecting shaft (1) is located on one side of the outer wall of the second spring (15), and the second spring (15) is fixedly connected to the inner wall of the flange module (2).

6. The high-sealing float level gauge flange connection structure according to claim 1, characterized in that: The fixing rod (3) is slidably connected to the inner wall of the button (5), the button (5) is located above the locking module (8), and the locking module (8) is located on the outer wall of the moving round block (11).

7. The high-sealing float level gauge flange connection structure according to claim 2, characterized in that: The flange module (2) is fixedly connected to the outer wall of the fixing rod (3), and the flange module (2) is attached to the outer wall of the fixing plate (7).

8. The high-sealing float level gauge flange connection structure according to claim 1, characterized in that: The fixing rod (3) is located below the handle one (4), and the outer wall of the fixing rod (3) is provided with the handle two (6).