Sealing Device for Oil Tank
A sealing device for an oil tank is mounted between a tank body and a floating roof and includes a fixed bracket, an inner layer plate secured to the fixed bracket, at least one inner spring plate secured on an annular inner diameter of the inner layer plate and applying a force directed toward an outer diameter of the inner layer plate, an outer layer plate arranged on an exterior face of the inner layer plate, with a gap being defined between an interior face of the outer layer plate and the exterior face of the inner layer plate, and at least one outer spring plate arranged in the gap between the outer layer plate and the inner layer plate and applying a force directed toward an outer diameter of the outer layer plate.
The present invention relates to a sealing device and, more particularly, to a sealing device for an oil tank.
2. Description of the Related ArtA conventional oil tank in accordance with the prior art shown in
The primary objective of the present invention is to provide a sealing device that has an excellent sealing effect, has a greater structural strength, has a longer lifetime, and has a wearproof feature.
In accordance with the present invention, there is provided a sealing device for an oil tank, comprising a fixed bracket, an inner layer plate secured to the fixed bracket, at least one inner spring plate secured on an annular inner diameter of the inner layer plate and applying a force directed toward an outer diameter of the inner layer plate, an outer layer plate arranged on an exterior face of the inner layer plate, with a gap being defined between an interior face of the outer layer plate and the exterior face of the inner layer plate, and at least one outer spring plate arranged in the gap between the outer layer plate and the inner layer plate and applying a force directed toward an outer diameter of the outer layer plate. The inner layer plate has a radially sectional face that is curved to form a closed annular shape. The inner layer plate forms a circle surrounding the fixed bracket. The outer layer plate forms a circle surrounding the inner layer plate. The interior face of the outer layer plate and the exterior face of the inner layer plate are locally separated to form the gap.
Preferably, the at least one inner spring plate has a radially sectional face having a vortex shape.
Preferably, the outer layer plate has a free end spaced from the inner layer plate to form the gap.
Preferably, the at least one outer spring plate has a substantially U-shaped configuration, and has a first end secured to the fixed bracket and a second end contacting the interior face of the outer layer plate.
Preferably, the sealing device includes multiple inner spring plates that are centered at a center of the inner layer plate and are arranged in a radiating shape.
Preferably, the sealing device includes multiple outer spring plate that are centered at a center of the inner layer plate and are arranged in a radiating shape.
Preferably, the outer layer plate includes a metallic sheet plate and a fiber layer mounted on an exterior face of the metallic sheet plate.
Preferably, the fiber layer is made of carbon fiber.
Alternatively, the fiber layer is made of glass fiber.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
Referring to the drawings and initially to
Referring now to
The fixed bracket 31 is made of a steel sheet that is bent to have a circular shape corresponding to the inner diameter of the tank body 2. The support seat 32 and the fixed bracket 31 are combined to construct a combination that is secured to the outer diameter of the floating roof 1.
The inner layer plate 34 is made of a steel sheet that is bent to have a circular shape corresponding to the inner diameter of the tank body 2. The inner layer plate 34 has a radially sectional face that is curved to form a closed annular shape. The inner layer plate 34 forms a circle surrounding the fixed bracket 31. Preferably, the inner layer plate 34 has the shape of a water drop.
The outer layer plate 36 has an arcuate shape and forms a circle surrounding the inner layer plate 34. The interior face of the outer layer plate 36 and the exterior face of the inner layer plate 34 are locally separated to form the gap S.
In the preferred embodiment of the present invention, the at least one inner spring plate 35 has a radially sectional face having a vortex shape. Thus, the at least one inner spring plate 35 has a vortex shape with an elastic force applied on the interior face of the inner layer plate 34, so that the inner layer plate 34 is expanded toward the outer diameter of the inner layer plate 34. The sealing device 3 further includes a roll 33 pressing and guiding the at least one inner spring plate 35 to stabilize the position of the at least one inner spring plate 35, and a steel cable extending through the vortex center 351 of the at least one inner spring plate 35 to enhance the whole structural strength of the at least one inner spring plate 35. The roll 33 is disposed in the inner layer plate 34 and located outside of the fixed bracket 31. Each of the inner layer plate 34 and the at least one outer spring plate 37 is provided with a through hole (not shown). The roll 33 is secured to the fixed bracket 31 by a fastening member (not shown) which extends through the through hole of each of the inner layer plate 34 and the at least one outer spring plate 37.
In the preferred embodiment of the present invention, the outer layer plate 36 has a fixed end secured to the inner layer plate 34 and has a free end spaced from the inner layer plate 34 to form the gap S.
In the preferred embodiment of the present invention, the at least one outer spring plate 37 has a substantially U-shaped configuration. The at least one outer spring plate 37 has a first end secured to the fixed bracket 31 and a second end contacting the interior face of the outer layer plate 36.
In another preferred embodiment of the present invention, the sealing device 3 includes multiple inner spring plates 35 that are centered at a center of the inner layer plate 34 and are arranged in a radiating shape.
In another preferred embodiment of the present invention, the sealing device 3 includes multiple outer spring plate 37 that are centered at a center of the inner layer plate 34 and are arranged in a radiating shape.
In the preferred embodiment of the present invention, as shown in
In the preferred embodiment of the present invention, the fiber layer 362 is made of carbon fiber, glass fiber or the like.
In assembly, referring to
Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the scope of the invention.
Claims
1. A sealing device for an oil tank, comprising:
- a fixed bracket;
- an inner layer plate secured to the fixed bracket;
- at least one inner spring plate secured on an annular inner diameter of the inner layer plate and applying a force directed toward an outer diameter of the inner layer plate;
- an outer layer plate arranged on an exterior face of the inner layer plate, with a gap being defined between an interior face of the outer layer plate and the exterior face of the inner layer plate; and
- at least one outer spring plate arranged in the gap between the outer layer plate and the inner layer plate and applying a force directed toward an outer diameter of the outer layer plate;
- wherein:
- the inner layer plate has a radially sectional face that is curved to form a closed annular shape;
- the inner layer plate forms a circle surrounding the fixed bracket;
- the outer layer plate forms a circle surrounding the inner layer plate; and
- the interior face of the outer layer plate and the exterior face of the inner layer plate are locally separated to form the gap.
2. The sealing device for an oil tank of claim 1, wherein the at least one inner spring plate has a radially sectional face having a vortex shape.
3. The sealing device for an oil tank of claim 1, wherein the outer layer plate has a free end spaced from the inner layer plate to form the gap.
4. The sealing device for an oil tank of claim 1, wherein the at least one outer spring plate has a substantially U-shaped configuration, and has a first end secured to the fixed bracket and a second end contacting the interior face of the outer layer plate.
5. The sealing device for an oil tank of claim 1, wherein the sealing device includes multiple inner spring plates that are centered at a center of the inner layer plate and are arranged in a radiating shape.
6. The sealing device for an oil tank of claim 1, wherein the sealing device includes multiple outer spring plate that are centered at a center of the inner layer plate and are arranged in a radiating shape.
7. The sealing device for an oil tank of claim 1, wherein the outer layer plate includes a metallic sheet plate and a fiber layer mounted on an exterior face of the metallic sheet plate.
8. The sealing device for an oil tank of claim 7, wherein the fiber layer is made of carbon fiber.
9. The sealing device for an oil tank of claim 7, wherein the fiber layer is made of glass fiber.
Type: Application
Filed: Oct 2, 2018
Publication Date: Apr 11, 2019
Inventors: Ming-Chun Weng (New Taipei City), Ming-Tsang Yu (New Taipei City), Wen-Pin Pan (New Taipei City)
Application Number: 16/149,329