Floating disc sealing structure

Abstract

The invention relates to the technical field of liquid storage equipment, in particular to a floating disc sealing structure which comprises a storage tank and a floating disc, the floating disc is movably arranged in the storage tank, a sealing assembly is arranged between the floating disc and the storage tank and comprises an arc-shaped elastic sealing plate, one end of the elastic sealing plate is fixedly connected with the edge of the floating disc, and the other end of the elastic sealing plate abuts against the inner wall of the storage tank. A sealing elastic piece is arranged above the elastic sealing plate, a flexible diaphragm is arranged between the sealing elastic piece and the elastic sealing plate, one end of the flexible diaphragm is fixedly connected with the floating disc, the other end of the flexible diaphragm abuts against the inner wall of the storage tank and freely reciprocates up and down, and the space between the sealing elastic piece and the elastic sealing plate is divided into a first cavity and a second cavity through the flexible diaphragm. An exhaust port communicated with the first cavity is formed in one side of the closed elastic piece. The device has the advantages that harmful gas is collected, environmental pollution is avoided, the device is simple in structure and easy and convenient to use, and the sealing performance between the floating disc and the storage tank is improved.

Description

Technical Field

[0001] The present application relates to the technical field of liquid storage equipment, and in particular to a floating disk sealing structure. Background Art

[0002] A floating tray is a device used to store liquids, especially in the petrochemical industry. It is a large tray that floats on the surface of the liquid and is usually used to reduce the evaporation loss of the liquid. The floating tray can effectively cover the surface of the liquid, thereby reducing the contact area between the liquid and the air, and thus reducing the evaporation rate. In addition, the floating tray can also help prevent pollution and reduce the risk of fire. When designing and using a floating tray, factors such as the nature of the liquid, storage conditions, and the material and structure of the floating tray need to be considered to ensure that it works safely and effectively.

[0003] On large ships, the liquid in the oil tank will move with the ship, and the float will also move up and down with the liquid inside the tank. During the movement of the liquid, part of the liquid will adhere to the inner wall of the tank. When the float moves, this part of the liquid will evaporate after coming into contact with the air to produce harmful gases. Harmful gases entering the air and water will endanger the surrounding environment. Therefore, there is an urgent need for a sealing structure that can collect and discharge harmful gases. Summary of the invention

[0004] In order to solve the problem in the prior art that during the movement of liquid in existing storage tanks, part of the liquid will adhere to the inner wall of the tank. When the float moves, this part of the liquid will evaporate and produce harmful gases after coming into contact with the air. The harmful gases enter the air and water and endanger the surrounding environment. The present application provides a floating plate sealing structure.

[0005] A floating plate sealing structure provided in the present application adopts the following technical solution: a floating plate sealing structure, comprising a storage tank and a floating plate, wherein the floating plate is movably arranged inside the storage tank, and a sealing assembly is arranged between the floating plate and the storage tank, wherein the sealing assembly comprises an arc-shaped elastic sealing plate, wherein one end of the elastic sealing plate is fixedly connected to the edge of the floating plate, and the other end abuts against the inner wall of the storage tank, a closing spring sheet is arranged above the elastic sealing plate, a flexible diaphragm is arranged between the closing spring sheet and the elastic sealing plate, wherein one end of the flexible diaphragm is fixedly connected to the floating plate, and the other end abuts against the inner wall of the storage tank and can freely reciprocate up and down, the flexible diaphragm separates the closing spring sheet and the elastic sealing plate into a first cavity and a second cavity, and an exhaust port connected to the first cavity is arranged on one side of the closing spring sheet.

[0006] By adopting the above technical solution, the floating plate reciprocates up and down inside the storage tank during liquid storage. When the floating plate moves upward inside the storage tank, the flexible diaphragm moves toward the side of the elastic sealing plate under the action of the inner wall of the storage tank, and the volume of the second cavity between the elastic sealing plate and the flexible diaphragm is reduced. The flexible diaphragm squeezes the air inside the second cavity so that harmful gases enter the first cavity between the closed spring sheet and the flexible diaphragm. When the floating plate moves downward inside the storage tank, the flexible diaphragm moves toward the side of the closed spring sheet under the action of the inner wall of the storage tank, and the volume of the first cavity between the closed spring sheet and the flexible diaphragm is reduced. The flexible diaphragm squeezes the air inside the first cavity so that harmful gases are discharged from the exhaust port connected to the first cavity, thereby realizing the recovery of harmful gases.

[0007] Optionally, a mounting frame is extended upward from the edge of the floating plate, and the elastic sealing plate, the flexible diaphragm and the closing spring are fixedly connected to the mounting frame by bolts.

[0008] By adopting the above technical solution, the elastic sealing plate, the flexible diaphragm and the closing spring are fixedly connected to the mounting frame by bolts, so that the disassembly and assembly of the sealing assembly are convenient.

[0009] Optionally, the closing spring sheet has the same arc bending direction as the elastic sealing plate, the end of the closing spring sheet is spaced a set distance from the inner wall of the storage tank, a flexible sealing gasket is provided on the inner wall surface of the closing spring sheet, and the end of the flexible sealing gasket abuts against the inner wall of the storage tank.

[0010] By adopting the above technical solution, the flexible sealing gasket closes the gap between the closing spring sheet and the inner wall of the storage tank, thereby improving the sealing performance between the closing spring sheet and the inner wall of the storage tank. At the same time, when the gas inside the first cavity is discharged, a negative pressure is generated inside the first cavity. Under the action of the negative pressure, the flexible sealing sheet will separate from the inner wall of the storage tank, thereby allowing outside air to enter the first cavity, so as to ensure that the pressure inside the first cavity is constant, thereby facilitating the discharge of harmful gases.

[0011] Optionally, the exhaust port is connected to an exhaust fan via a pipeline.

[0012] By adopting the above technical solution, the exhaust fan continuously runs to discharge the harmful gas in the first cavity through the exhaust port, effectively avoiding the leakage of harmful gas to pollute the environment and improving the recovery efficiency of harmful gas.

[0013] Optionally, the closing spring sheet and the elastic sealing plate are symmetrically arranged in opposite arc bending directions, a mounting ring is arranged in the middle of one end where the closing spring sheet and the elastic sealing plate are connected, one end of the flexible diaphragm is fixedly connected to the mounting ring, an exhaust duct connected to the first cavity and an air intake duct connected to the second cavity are arranged inside the mounting ring, an exhaust check valve is arranged in the exhaust duct, and an air intake check valve is arranged in the air intake duct.

[0014] By adopting the above technical solution, the floating plate reciprocates up and down inside the storage tank during the liquid storage process. When the floating plate moves upward inside the storage tank, the flexible diaphragm moves toward the side of the elastic sealing plate under the action of the inner wall of the storage tank, the volume of the second cavity between the elastic sealing plate and the flexible diaphragm decreases, the volume of the first cavity increases, and the harmful gas in the second cavity enters the first cavity. When the floating plate moves downward inside the storage tank, the flexible diaphragm moves toward the side of the closed spring sheet under the action of the inner wall of the storage tank, the volume of the first cavity between the closed spring sheet and the flexible diaphragm decreases, the volume of the second cavity increases, and negative pressure is generated inside the second cavity. The outside air enters the second cavity through the air intake pipe and the air intake check valve, and the harmful gas inside the first cavity is discharged through the exhaust pipe and the exhaust check valve under the action of the flexible diaphragm.

[0015] Optionally, a plurality of one-way exhaust holes are evenly spaced in the circumferential direction in the middle of the flexible diaphragm.

[0016] By adopting the above technical solution, a one-way exhaust hole is provided to allow harmful gases in the second cavity to enter the first cavity.

[0017] Optionally, the one-way exhaust hole comprises a through hole, a mounting seat is arranged in the middle of the through hole, a valve plate is arranged on a surface of the through hole facing the first cavity, and the middle of the valve plate is connected to the mounting seat via a connecting rod.

[0018] By adopting the above technical solution, when the flexible diaphragm moves toward the side of the elastic sealing plate, the volume of the second cavity decreases, the gas pressure increases, the valve plate separates from the through hole under the action of the gas pressure, and the gas enters the first cavity through the through hole; when the flexible diaphragm moves toward the side of the closed spring plate, the volume of the first cavity decreases, and the gas pressure increases; since the mounting seat limits the valve plate, the valve plate closes the through hole under the action of pressure, so that the gas in the first cavity cannot enter the through hole, thereby realizing unidirectional gas transportation.

[0019] Optionally, a connecting ring is connected to the side of the mounting ring away from the flexible diaphragm, a collecting chamber connected to the exhaust pipe and an air inlet connected to the air inlet pipe are arranged inside the connecting ring, and an exhaust port connected to the collecting chamber is arranged above the connecting ring.

[0020] By adopting the above technical solution, the gas exhausted from the exhaust pipe is collected inside the collecting chamber, and then discharged and collected through the exhaust port above the collecting chamber, thereby improving the collection efficiency and avoiding leakage.

[0021] Optionally, a flexible scraper is provided at the edge of one end of the closing spring sheet that contacts the inner wall of the storage tank.

[0022] By adopting the above technical solution, the floating plate drives each closing spring to move up and down when it moves up and down inside the storage tank. The flexible scraper at the end of the closing spring scrapes off the liquid attached to the inner wall of the storage tank during the movement, thereby avoiding liquid leakage and preventing the liquid from contacting the air over a large area and volatilizing into the air to produce harmful gases.

[0023] Optionally, a fiber membrane is provided on a surface of the elastic sealing plate that contacts the inner wall of the storage tank.

[0024] By adopting the above technical solution and arranging the fiber membrane, the sealing performance between the elastic sealing plate and the storage tank is improved.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: In the present application, a closing spring is arranged above the elastic sealing plate between the floating plate and the storage tank, and a flexible diaphragm is arranged between the closing spring and the elastic sealing plate. The floating plate drives the flexible diaphragm to move during the movement so that harmful gases generated between the closing spring and the elastic sealing plate are discharged and collected, thereby effectively collecting harmful gases and avoiding environmental pollution. The device has a simple structure and is easy to use, and improves the sealing performance between the floating plate and the storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic cross-sectional structure diagram of a floating disk sealing structure in Example 1 of the present application.

[0027] Figure 2 It is a floating disc sealing structure in the first embodiment of the present application. Figure 1 A magnified schematic diagram of local A.

[0028] Figure 3 It is a schematic cross-sectional structure diagram of a floating disk sealing structure in the second embodiment of the present application.

[0029] Figure 4 It is a floating disc sealing structure in the second embodiment of the present application. Figure 3 A magnified schematic diagram of local B.

[0030] Figure 5 It is a schematic diagram of the connection structure between a flexible diaphragm and a mounting ring of a floating plate sealing structure in the second embodiment of the present application.

[0031] Figure 6 It is a schematic diagram of a top view of a flexible diaphragm of a floating disk sealing structure in the second embodiment of the present application.

[0032] Explanation of the accompanying drawings: 1. Storage tank; 2. Floating plate; 3. Sealing assembly; 4. Elastic sealing plate; 5. Flexible diaphragm; 6. Closing spring; 7. Flexible sealing gasket; 8. Exhaust port; 9. First cavity; 10. Second cavity; 11. Mounting ring; 12. Connecting ring; 13. Mounting frame; 14. Collecting chamber; 15. Air inlet; 16. Exhaust duct; 17. Intake duct; 18. Exhaust check valve; 19. Intake check valve; 20. One-way exhaust hole; 21. Through hole; 22. Mounting seat; 23. Valve plate; 24. Flexible scraper. DETAILED DESCRIPTION

[0033] The following is an explanation of the implementation of the present application by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0034] See also Figure 1-6 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions for the implementation of this application, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical content disclosed in this application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this application. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this application without substantially changing the technical content.

[0035] The following is combined with Figure 1-6 This application is described in further detail.

[0036] Embodiment 1: This embodiment discloses a floating plate sealing structure.

[0037] Reference Figure 1 A floating plate sealing structure includes a storage tank 1 and a floating plate 2. The floating plate 2 is movably arranged inside the storage tank 1, and a sealing component 3 is arranged between the edge of the floating plate 2 and the storage tank 1.

[0038] Reference Figure 2The sealing assembly 3 includes an elastic sealing plate 4 and a closed spring 6. An annular mounting bracket 13 is extended upward from the edge of the floating plate 2. The elastic sealing plate 4 and the closed spring 6 are both arranged in an arc shape and extend downwardly. One end of the elastic sealing plate 4 and the closed spring 6 are fixedly connected to the mounting bracket 13 by bolts. One side of the elastic sealing plate 4 abuts against the inner wall of the storage tank 1. A fiber membrane is arranged on the surface of the side where the elastic sealing plate 4 abuts against the inner wall of the storage tank 1. A gap is set between one end of the closed spring 6 and the inner wall of the storage tank 1. A flexible sealing gasket 7 is arranged on the inner wall of the closed spring 6. The flexible sealing gasket 7 closes the gap between one end of the closed spring 6 and the inner wall of the storage tank 1. The gap is closed, a flexible scraper 24 is arranged on the outer side of one end of the closing spring piece 6 close to the inner wall of the storage tank 1, one end of the flexible scraper 24 abuts against the inner wall of the storage tank 1, a flexible diaphragm 5 is arranged between the closing spring piece 6 and the elastic sealing plate 4, one end of the flexible diaphragm 5 is fixedly arranged between the closing spring piece 6 and the elastic sealing plate 4 and fixedly connected to the mounting frame 13, and the other end abuts against the inner wall of the storage tank 1 and is curved, a first cavity 9 is formed between the flexible diaphragm 5 and the closing spring piece 6, a second cavity 10 is formed between the flexible diaphragm 5 and the elastic sealing plate 4, an exhaust port 8 connected to the first cavity 9 is arranged on the side of the closing spring piece 6, and the exhaust port 8 is connected to the exhaust fan through a pipeline.

[0039] The implementation principle of a floating plate sealing structure in this embodiment is: When the liquid inside the storage tank 1 shakes, the floating plate 2 moves up and down with the liquid inside the storage tank 1. When the floating plate 2 moves downward, the liquid adheres to the inner wall of the storage tank 1 and enters between the elastic sealing plate 4 and the closed spring 6. The liquid evaporates into the air and forms harmful gas between the elastic sealing plate 4 and the closed spring 6. At the same time, the flexible scraper 24 scrapes the liquid on the inner wall of the storage tank 1 to prevent the liquid from contacting with the outside air and volatilizing into the air to produce harmful gas. During the downward movement of the floating plate 2, the flexible diaphragm 5 moves between the elastic sealing plate 4 and the closed spring 6 toward the side of the closed spring 6, and the volume of the first cavity 9 between the closed spring 6 and the flexible diaphragm 5 is reduced. The flexible diaphragm 5 squeezes the air inside the first cavity 9 so that the harmful gas is discharged from the exhaust port 8 connected to the first cavity 9, and the exhaust fan extracts the harmful gas from the exhaust port 8 and collects it to avoid pollution. Environment, at the same time, when the gas inside the first cavity 9 is discharged, negative pressure is generated inside the first cavity 9. Under the action of negative pressure, the flexible sealing gasket 7 will separate from the inner wall of the storage tank 1, so that the outside air enters the first cavity 9 to ensure that the pressure inside the first cavity 9 is constant, which is convenient for discharging harmful gases. When the floating plate 2 moves upward inside the storage tank 1, the flexible diaphragm 5 moves toward the side of the elastic sealing plate 4 under the action of the inner wall of the storage tank 1, and the volume of the second cavity 10 between the elastic sealing plate 4 and the flexible diaphragm 5 is reduced. The flexible diaphragm 5 squeezes the air inside the second cavity 10 so that the harmful gas enters the first cavity 9 between the closing spring sheet 6 and the flexible diaphragm 5. When the floating plate 2 moves downward again, the harmful gas inside the first cavity 9 is discharged by squeezing the flexible diaphragm 5, and the cycle is repeated, thereby realizing the collection and treatment of harmful gases.

[0040] Embodiment 2: The difference between this embodiment and the first embodiment is that in this embodiment, the arc bending direction of the closed spring piece 6 and the elastic sealing plate 4 are opposite and symmetrical, a mounting ring 11 is arranged in the middle of one end where the closed spring piece 6 and the elastic sealing plate 4 are connected, one end of the flexible diaphragm 5 is fixedly connected to the mounting ring 11, an exhaust pipe 16 connected to the first cavity 9 and an intake pipe 17 connected to the second cavity 10 are arranged inside the mounting ring 11, an exhaust check valve 18 is arranged in the exhaust pipe 16, an intake check valve 19 is arranged in the intake pipe 17, and the middle of the flexible diaphragm 5 is provided with a circumferential A plurality of one-way exhaust holes 20 are evenly spaced apart, the one-way exhaust holes 20 include a through hole 21, a mounting seat 22 is arranged in the middle of the through hole 21, a valve plate 23 is arranged on the surface of the through hole 21 facing the first cavity 9, the middle of the valve plate 23 is connected to the mounting seat 22 through a connecting rod, a connecting ring 12 is connected to the side of the mounting ring 11 away from the flexible diaphragm, a collecting chamber 14 connected to the exhaust pipe 16 and an air inlet 15 connected to the air inlet pipe 17 are arranged inside the connecting ring 12, and an exhaust port 8 connected to the collecting chamber 14 is arranged above the connecting ring 12; When the floating plate 2 moves upward inside the storage tank 1, the flexible diaphragm 5 moves toward the side of the elastic sealing plate 4 under the action of the inner wall of the storage tank 1, the volume of the second cavity 10 between the elastic sealing plate 4 and the flexible diaphragm 5 decreases, and the volume of the first cavity 9 increases. The harmful gas in the second cavity 10 enters the first cavity 9 through the one-way exhaust hole 20 on the flexible diaphragm 5. When the floating plate 2 moves downward inside the storage tank 1, the flexible diaphragm 5 moves toward the side of the closed spring sheet 6 under the action of the inner wall of the storage tank 1, the volume of the first cavity 9 between the closed spring sheet 6 and the flexible diaphragm 5 decreases, and the volume of the second cavity 10 increases. Negative pressure is generated inside the second cavity 10, and the outside air enters the second cavity 10 through the air inlet 15, the air inlet pipe 17 and the air inlet one-way valve 19. The harmful gas inside the first cavity 9 is discharged to the collecting cavity 14 through the exhaust pipe 16 and the exhaust one-way valve 18 under the action of the flexible diaphragm 5. The harmful gas is collected and stored in the collecting cavity 14, and then discharged through the exhaust port 8 for collection.

[0041] In summary, in the present application, a closed spring is arranged above the elastic sealing plate between the floating plate and the storage tank, and a flexible diaphragm is arranged between the closed spring and the elastic sealing plate. The floating plate drives the flexible diaphragm to move during the movement so that the harmful gas generated between the closed spring and the elastic sealing plate is discharged and collected, which effectively realizes the collection of harmful gas and avoids environmental pollution. The device has a simple structure and is easy to use, and improves the sealing performance between the floating plate and the storage tank. Therefore, the present application effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0042] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present application shall still be included in the protection scope of the present application.

Claims

1. A floating plate sealing structure, comprising a storage tank (1) and a floating plate (2), wherein the floating plate (2) is movably arranged inside the storage tank (1), and a sealing component (3) is arranged between the floating plate (2) and the storage tank (1), characterized in that: The sealing assembly (3) comprises an arc-shaped elastic sealing plate (4), one end of the elastic sealing plate (4) is fixedly connected to the edge of the floating plate (2), and the other end is in contact with the inner wall of the storage tank (1). A closing spring (6) is arranged above the elastic sealing plate (4), and a flexible diaphragm (5) is arranged between the closing spring (6) and the elastic sealing plate (4). One end of the flexible diaphragm (5) is fixedly connected to the floating plate (2), and the other end is in contact with the inner wall of the storage tank (1) and can freely reciprocate up and down. The flexible diaphragm (5) separates the closing spring (6) and the elastic sealing plate (4) to form a first cavity (9) and a second cavity (10). An exhaust port (8) communicating with the first cavity (9) is arranged on one side of the closing spring (6).

2. A floating plate sealing structure according to claim 1, characterized in that: A mounting frame (13) extends upward from the edge of the floating plate (2), and the elastic sealing plate (4), the flexible diaphragm (5) and the closing spring sheet (6) are fixedly connected to the mounting frame (13) by means of bolts.

3. A floating plate sealing structure according to claim 1, characterized in that: The arc bending direction of the closing spring piece (6) is consistent with that of the elastic sealing plate (4); the end of the closing spring piece (6) is spaced apart from the inner wall of the storage tank (1) by a set distance; a flexible sealing gasket (7) is provided on the inner wall surface of the closing spring piece (6); and the end of the flexible sealing gasket (7) abuts against the inner wall of the storage tank (1).

4. A floating plate sealing structure according to claim 3, characterized in that: The exhaust port (8) is connected to the exhaust fan via a pipeline.

5. A floating plate sealing structure according to claim 1, characterized in that: The arc-shaped bending directions of the closing spring sheet (6) and the elastic sealing plate (4) are opposite and they are symmetrically arranged. A mounting ring (11) is arranged in the middle of one end where the closing spring sheet (6) and the elastic sealing plate (4) are connected. One end of the flexible diaphragm (5) is fixedly connected to the mounting ring (11). An exhaust pipe (16) connected to the first cavity (9) and an intake pipe (17) connected to the second cavity (10) are arranged inside the mounting ring (11). An exhaust check valve (18) is arranged in the exhaust pipe (16), and an intake check valve (19) is arranged in the intake pipe (17).

6. A floating plate sealing structure according to claim 5, characterized in that: A plurality of one-way exhaust holes (20) are evenly spaced in the circumferential direction in the middle of the flexible diaphragm (5).

7. A floating plate sealing structure according to claim 6, characterized in that: The one-way exhaust hole (20) comprises a through hole (21), a mounting seat (22) is arranged in the middle of the through hole (21), a valve plate (23) is arranged on a surface of one side of the through hole (21) facing the first cavity (9), and the middle of the valve plate (23) is connected to the mounting seat (22) via a connecting rod.

8. A floating plate sealing structure according to claim 5, characterized in that: A connecting ring (12) is connected to the side of the mounting ring (11) away from the flexible diaphragm (5); a collecting chamber (14) connected to the exhaust pipe (16) and an air inlet (15) connected to the air inlet pipe (17) are arranged inside the connecting ring (12); an exhaust port (8) connected to the collecting chamber (14) is arranged above the connecting ring (12).

9. A floating plate sealing structure according to claim 1, characterized in that: A flexible scraper (24) is provided at the edge of one end of the closing spring sheet (6) that contacts the inner wall of the storage tank (1).

10. The floating plate sealing structure according to claim 1, characterized in that: A fiber membrane is provided on the surface of the elastic sealing plate (4) on the side in contact with the inner wall of the storage tank (1).

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