Large-compensation elastic mechanical sealing structure

Abstract

The utility model discloses a large-compensation elastic mechanical sealing structure which comprises two shoe-shaped plates, the two shoe-shaped plates are symmetrically fixed, a filler plate is fixedly inserted between the two shoe-shaped plates, diaphragms are fixed to the inner walls of the shoe-shaped plates and the filler plate through symmetrically-installed spring plates, and the inner walls of the two shoe-shaped plates and the inner wall of the filler plate are fixedly provided with the spring plates. Membrane supports are installed on the inner wall of the diaphragm at equal intervals, a baffle is fixed to the top of the shoe-shaped plate and the top of the filler plate, a V-shaped inserting groove is integrally formed in the bottom of the shoe-shaped plate, and an inserting plate at the bottom of the shoe-shaped plate is fixedly inserted into the V-shaped inserting groove. The utility model has the advantages of exquisite structure, high strength, good sealing property and reasonable design, can be suitable for various media such as olefin and aromatic hydrocarbon alcohol, can effectively reduce the evaporation loss of oil products, saves the oil products, and improves the safety at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a large-compensation elastic mechanical seal structure. Background Art

[0002] The internal float is a normal pressure storage tank accessory that floats on the surface of the medium through its own buoyancy and floats up and down with the medium. It is currently recognized as the most economical and reliable chemical energy-saving and emission-reduction storage tank accessory for reducing the volatilization loss of oil and other chemical media.

[0003] Most of the domestic internal floating roof annular flexible seals generally adopt three types of sealing: bladder seals are close to the tank wall and rise and fall freely; when the floating roof is in long-term operation, oil may enter the bladder seal bag, and the tongue seal will sag and not reverse due to poor rigidity, affecting the sealing effect; tubular liquid-filled seals are used in small quantities on steel floating roofs and are not suitable for internal floating roofs. Because the tubular liquid-filled seal is filled with salt water or diesel in the bag, the liquid filling in each meter of the bag is as high as 80KG, which exceeds the weight that the internal floating roof can bear. Therefore, it is necessary to design a large compensation elastic mechanical seal structure. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a large compensation elastic mechanical seal structure. The elastic mechanical seal structure has a sophisticated structure, high strength, good sealing performance and reasonable design, and can be used for various media such as olefins and aromatic alcohols. It can effectively reduce the evaporation loss of oil products, save oil products and improve safety.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large compensation elastic mechanical sealing structure, including a shoe-shaped plate, wherein two shoe-shaped plates are provided and the two shoe-shaped plates are symmetrically fixed, a filler plate is inserted and fixed between the two shoe-shaped plates, a diaphragm is fixed to the inner wall of the shoe-shaped plate and the filler plate through a symmetrically installed spring plate, a membrane support is installed at an equal distance on the inner wall of the diaphragm, and a baffle is fixed on the top of the shoe-shaped plate and the filler plate.

[0006] Preferably, a V-shaped slot is integrally formed at the bottom of the shoe-shaped plate, and the plug-in plate at the bottom of the shoe-shaped plate is plugged and fixed inside the V-shaped slot.

[0007] Preferably, the diaphragm is a polytetrafluoroethylene material component.

[0008] Preferably, the shoe-shaped plate, spring plate and filler plate are all made of a stainless steel material.

[0009] Preferably, the baffle is a galvanized steel material component.

[0010] The beneficial effects of the utility model are:

[0011] It has exquisite structure, high strength, good sealing and reasonable design. It can be used for various media such as olefins and aromatic alcohols. It can effectively reduce the evaporation loss of oil, save oil and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the overall front view structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the overall left-side structure of the utility model;

[0015] Numbers in the figure: 1, shoe-shaped plate; 2, membrane support; 3, spring plate; 4, filler plate; 5, plug plate; 6, V-shaped slot; 7, baffle; 8, diaphragm. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0017] Depend on Figure 1 and Figure 2The utility model provides the following technical solutions: a large compensation elastic mechanical sealing structure, including a shoe-shaped plate 1, two shoe-shaped plates 1 are provided, and the two shoe-shaped plates 1 are symmetrically fixed, a filler plate 4 is inserted and fixed between the two shoe-shaped plates 1, the inner walls of the shoe-shaped plate 1 and the filler plate 4 are fixed with a diaphragm 8 through a symmetrically installed spring plate 3, and the inner wall of the diaphragm 8 is equidistantly installed with a membrane support 2, and a baffle 7 is fixed on the top of the shoe-shaped plate 1 and the filler plate 4. The elastic mechanical sealing structure is formed by overlapping the shoe-shaped plate 1, the spring plate 3 and the filler plate 4 with each other, the top end is fixed on the four sides of the floating plate, and the bottom end is against the tank wall. The compensation amount is large, there is no aging problem, and the service life is long. The effective expansion and contraction of the diaphragm 8 is controlled by the spring plate 3, and the filler plate 4 is inserted between the two shoe-shaped plates 1, which generates a sufficiently large force on the tank wall, so that the diaphragm 8 is closely fitted to the tank wall, preventing gas leakage, achieving zero volatilization, and ensuring the sealing effect. Moreover, the setting of the baffle 7 effectively blocks the influence of the deformation of the tank wall on the floating plate.

[0018] Preferably, the diaphragm 8 is a component made of polytetrafluoroethylene material, which is suitable for storing media such as olefins, aromatic hydrocarbons and alcohols.

[0019] Preferably, the shoe-shaped plate 1, the spring plate 3 and the filler plate 4 are all made of a stainless steel material and have a long service life.

[0020] Preferably, the baffle 7 is a galvanized steel material component with a long service life.

[0021] Embodiment 2

[0022] In the first embodiment, the connection stability between the shoe-shaped plate 1 and the filler plate 4 is poor. Figure 1 As another preferred embodiment, the difference from the first embodiment is that a V-shaped slot 6 is integrally formed at the bottom of the shoe-shaped plate 1, and the plug-in plate 5 at the bottom of the shoe-shaped plate 1 is plugged and fixed inside the V-shaped slot 6, so the connection stability is good.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A large compensation elastic mechanical seal structure, comprising a shoe-shaped plate (1), characterized in that: Two shoe-shaped plates (1) are provided, and the two shoe-shaped plates (1) are symmetrically fixed, a filling plate (4) is inserted and fixed between the two shoe-shaped plates (1), the inner walls of the shoe-shaped plates (1) and the filling plates (4) are fixed with diaphragms (8) through symmetrically installed spring plates (3), the inner walls of the diaphragms (8) are equidistantly installed with membrane supports (2), and baffles (7) are fixed on the tops of the shoe-shaped plates (1) and the filling plates (4).

2. A large compensation elastic mechanical seal structure according to claim 1, characterized in that: A V-shaped slot (6) is integrally formed at the bottom of the shoe-shaped plate (1), and the inserting plate (5) at the bottom of the shoe-shaped plate (1) is inserted and fixed inside the V-shaped slot (6).

3. A large compensation elastic mechanical seal structure according to claim 1, characterized in that: The diaphragm (8) is a component made of polytetrafluoroethylene material.

4. A large compensation elastic mechanical seal structure according to claim 1, characterized in that: The shoe-shaped plate (1), the spring plate (3) and the filler plate (4) are all components made of stainless steel.

5. A large compensation elastic mechanical seal structure according to claim 1, characterized in that: The baffle (7) is a galvanized steel material component.

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