Water level gauge sealing structure

Abstract

The utility model discloses a water level gauge sealing structure, which relates to the technical field of water level gauges, and comprises an inner sleeve and a communicating pipe used for installing the inner sleeve, the inner sleeve is installed inside the communicating pipe, the communicating pipe is in threaded connection with the inside of a connecting seat, and the connecting seat is fixedly installed outside a water level gauge pipe body. The two ends of the inner sleeve are fixedly sleeved with a first convex edge and a second convex edge respectively, a second sealing ring is arranged between the second convex edge and the communicating pipe, the communicating pipe is sleeved with the connecting base in a threaded mode, the inner wall of one end of the connecting base is fixedly sleeved with a check ring, and a first sealing ring is arranged between the second convex edge and the check ring. By arranging a double-layer sealing structure of the inner sleeve, the first sealing ring and the second sealing ring, the double-layer sealing effect is achieved, and the problem that a traditional water level gauge is not convenient to use due to the fact that single-layer sealing is adopted, and the sealing rings need to be detached and replaced more frequently is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water level gauges, in particular to a sealing structure of a water level gauge. Background Art

[0002] The water level gauge is also called a "liquid level gauge" or "liquid surface gauge". Because the water in the boiler vaporizes at high temperature for heating, the loss of water and steam is large, and water must be constantly added to keep the water level in the boiler at a certain height. If the water level is too low, the boiler will be in danger of exploding. In order to keep track of the water level in the boiler at any time, a water level gauge is installed on the boiler, and the water level gauge and the boiler form a connecting vessel.

[0003] Due to the high water temperature in the boiler, the sealing ring may be oxidized and corroded at high temperature. The existing water level gauge generally installs a layer of sealing ring on the contact surface between the connecting pipe and the connecting seat for sealing. Since only a single-ring seal is used, the sealing ring needs to be disassembled and replaced more frequently, which is not convenient. Based on this, we propose an improved sealing structure of the water level gauge. Utility Model Content

[0004] The main purpose of the utility model is to provide a water level gauge sealing structure, which can effectively solve the technical problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A water level gauge sealing structure comprises an inner sleeve and a connecting pipe for installing the inner sleeve, the inner sleeve being installed inside the connecting pipe, the connecting pipe being threadedly connected inside a connecting seat, the connecting seat being fixedly installed outside a tube body of the water level gauge, the two ends of the inner sleeve being respectively fixedly sleeved with a convex edge 1 and a convex edge 2, a sealing ring 2 being arranged between the convex edge 2 and the connecting pipe, the connecting pipe being threadedly sleeved in the connecting seat, a retaining ring being fixedly sleeved on the inner wall of one end of the connecting seat, and a sealing ring 1 being arranged between the convex edge 2 and the retaining ring.

[0007] As a further solution of the utility model, a flange 2 is fixedly sleeved on the outer wall of the connecting pipe, a positioning rod is slidably sleeved on the flange 2, a rotating cap is fixedly connected to one end of the positioning rod, and a compression spring is arranged between the rotating cap and the flange 2.

[0008] As a further solution of the utility model, the compression spring is movably sleeved on the outer wall of the positioning rod, a thread groove is provided on the outer wall of the convex edge, and the other end of the positioning rod is threadedly sleeved in the thread groove.

[0009] As a further solution of the utility model, two connecting seats are provided, and the two connecting seats are respectively fixedly sleeved on the water level gauge tube body near the upper and lower ends.

[0010] As a further solution of the utility model, the sealing ring 1 and the sealing ring 2 are both sleeved on the inner end of the connecting seat, and the sealing ring 2 is sleeved on the outer wall of the inner sleeve.

[0011] As a further solution of the utility model, the inner diameters of the convex edge 1 and the convex edge 2 are equal to the inner diameter of the inner sleeve, and the outer diameter of the convex edge 1 is larger than the outer diameter of the convex edge 2.

[0012] As a further solution of the utility model, flanges 1 are fixedly sleeved on the upper and lower ends of the water level gauge tube body, and a liquid level scale is fixedly provided on the front end surface of the water level gauge tube body.

[0013] The beneficial effects of the utility model are as follows:

[0014] By providing a double-layer sealing structure of an inner sleeve, a sealing ring 1 and a sealing ring 2, when the connecting pipe is rotated to sleeve the connecting seat, the inner sleeve compresses and seals the sealing ring 1, and at the same time, the connecting pipe compresses and seals the sealing ring 2 between the convex edge 2 and the connecting pipe, thereby forming a double-layer seal, which can effectively improve the sealing performance of the device, and the sealing ring 2 is sleeved on the outer end of the inner sleeve and located between the convex edge 2 and the connecting pipe, avoiding direct contact with hot water over a large area, and having a longer service life, and reducing the frequency of replacing the sealing ring;

[0015] The positioning rod passes through flange two and is threadedly sleeved in the thread groove of convex edge one. When the connecting pipe is rotated to compress the sealing ring two, the distance between the convex edge two and the connecting pipe is reduced, while the distance between the convex edge one and the connecting pipe is increased. Conversely, the positioning rod pulls the rotating cap to further pressurize the compression spring. The buffering effect of the compression spring can prevent the sealing ring two from being seriously deformed due to excessive pressure when the connecting pipe is rotated, resulting in loss of effect. The sealing ring is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the external structure of a water level gauge sealing structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a water level gauge sealing structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the main structure of a water level gauge sealing structure of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the main structure of the sealing structure of a water level gauge.

[0020] In the figure: 1. Water level gauge tube body; 2. Connecting seat; 3. Connecting pipe; 4. Flange 1; 5. Liquid level scale; 6. Retaining ring; 7. Sealing ring 1; 8. Compression spring; 9. Inner sleeve; 10. Convex edge 1; 11. Convex edge 2; 12. Threaded groove; 13. Sealing ring 2; 14. Flange 2; 15. Positioning rod; 16. Turn cap. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-4 As shown, a water level gauge sealing structure includes an inner sleeve 9 and a connecting pipe 3 for installing the inner sleeve 9, the inner sleeve 9 is installed inside the connecting pipe 3, the connecting pipe 3 is threadedly connected to the inside of the connecting seat 2, the connecting seat 2 is fixedly installed on the outside of the water level gauge body 1, the two ends of the inner sleeve 9 are respectively fixedly sleeved with a convex edge 10 and a convex edge 2 11, a sealing ring 2 13 is arranged between the convex edge 2 11 and the connecting pipe 3, the connecting pipe 3 is threadedly sleeved in the connecting seat 2, a retaining ring 6 is fixedly sleeved on the inner wall of one end of the connecting seat 2, and a sealing ring 1 7 is arranged between the convex edge 2 11 and the retaining ring 6.

[0023] In this embodiment, a flange 2 14 is fixedly sleeved on the outer wall of the connecting pipe 3, a positioning rod 15 is slidably sleeved on the flange 2 14, a rotating cap 16 is fixedly connected to one end of the positioning rod 15, and a compression spring 8 is arranged between the rotating cap 16 and the flange 2 14. The compression spring 8 can buffer the pressure on the sealing ring to avoid serious deformation caused by excessive pressure on the sealing ring.

[0024] In this embodiment, the compression spring 8 is movably sleeved on the outer wall of the positioning rod 15, and a threaded groove 12 is provided on the outer wall of the convex edge 10. The other end of the positioning rod 15 is threadedly sleeved in the threaded groove 12, which facilitates the later disassembly of the positioning rod 15 to remove the compression spring 8.

[0025] In this embodiment, sealing ring 1 7 and sealing ring 2 13 are both sleeved on the inner end of the connecting seat 2, sealing ring 2 13 is sleeved on the outer wall of the inner sleeve 9, and sealing ring 2 13 is located between convex edge 2 11 and connecting pipe 3, with a small contact area with hot water and a longer service life.

[0026] In this embodiment, the inner diameters of flange 10 and flange 2 11 are equal to the inner diameter of inner sleeve 9, the outer diameter of flange 10 is larger than the outer diameter of flange 2 11, and the outer diameter of flange 2 11 is not larger than the outer diameter of connecting tube 3, so that flange 2 11 can be conveniently inserted into connecting seat 2.

[0027] In this embodiment, flanges 4 are fixedly sleeved on the upper and lower ends of the water level gauge tube body 1, a liquid level scale 5 is fixedly arranged on the front end surface of the water level gauge tube body 1, and the front end of the water level gauge tube body 1 is made of transparent material.

[0028] It should be noted that the utility model is a water level gauge sealing structure. When in use, the sealing ring 1 7 is placed in the connecting seat 2, and then the connecting pipe 3 is rotated to thread the connecting seat 2, and the connecting pipe 3 drives the convex edge 2 11 of the inner sleeve 9 to move toward the retaining ring 6, and finally the sealing ring 1 7 is pressed. At the same time, during the pressing process, the distance between the convex edge 2 11 and the connecting pipe 3 becomes smaller, and the sealing ring 2 13 is pressed, so that a double-layer seal is formed by the sealing ring 1 7 and the sealing ring 2 13, thereby improving the sealing effect;

[0029] In the process that the distance between the above-mentioned flange 2 11 and the connecting pipe 3 becomes smaller, the distance between the flange 10 and the connecting pipe 3 becomes larger, and the positioning rod 15 is pulled, thereby driving the compression spring 8 to be further compressed through the rotating cap 16. The buffering effect of the compression spring 8 can effectively prevent the sealing ring from being subjected to excessive force and causing serious deformation, thereby causing the loss of sealing effect.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A water level gauge sealing structure, comprising an inner sleeve (9) and a connecting pipe (3) for mounting the inner sleeve (9), wherein the inner sleeve (9) is mounted inside the connecting pipe (3), the connecting pipe (3) is threadedly connected inside a connecting seat (2), and the connecting seat (2) is fixedly mounted outside a water level gauge tube body (1), characterized in that: The two ends of the inner sleeve (9) are respectively fixedly sleeved with a convex edge 1 (10) and a convex edge 2 (11), a sealing ring 2 (13) is provided between the convex edge 2 (11) and the connecting pipe (3), the connecting pipe (3) is threadedly sleeved in the connecting seat (2), a retaining ring (6) is fixedly sleeved on the inner wall of one end of the connecting seat (2), and a sealing ring 1 (7) is provided between the convex edge 2 (11) and the retaining ring (6).

2. A water level gauge sealing structure according to claim 1, characterized in that: A second flange (14) is fixedly sleeved on the outer wall of the connecting pipe (3), a positioning rod (15) is slidably sleeved on the second flange (14), one end of the positioning rod (15) is fixedly connected to a rotating cap (16), and a compression spring (8) is arranged between the rotating cap (16) and the second flange (14).

3. A water level gauge sealing structure according to claim 2, characterized in that: The compression spring (8) is movably sleeved on the outer wall of the positioning rod (15); a thread groove (12) is provided on the outer wall of the convex edge (10); and the other end of the positioning rod (15) is threadedly sleeved in the thread groove (12).

4. A water level gauge sealing structure according to claim 1, characterized in that: A total of two connecting seats (2) are provided, and the two connecting seats (2) are respectively fixedly sleeved on the water level gauge tube body (1) near the upper and lower ends.

5. The water level gauge sealing structure according to claim 1, characterized in that: The sealing ring 1 (7) and the sealing ring 2 (13) are both sleeved on the inner end of the connecting seat (2), and the sealing ring 2 (13) is sleeved on the outer wall of the inner sleeve (9).

6. A water level gauge sealing structure according to claim 1, characterized in that: The inner diameters of the convex edge 1 (10) and the convex edge 2 (11) are equal to the inner diameter of the inner sleeve (9), and the outer diameter of the convex edge 1 (10) is greater than the outer diameter of the convex edge 2 (11).

7. The water level gauge sealing structure according to claim 1, characterized in that: The upper and lower ends of the water level gauge tube body (1) are fixedly sleeved with flanges 1 (4), and a liquid level scale (5) is fixedly provided on the front end surface of the water level gauge tube body (1).

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