A novel pneumatic tire sealing device for a trailing suction hopper dredger

Abstract

This utility model discloses a novel pneumatic tire sealing device for a trailing suction hopper dredger, belonging to the technical field of sealing devices. The novel pneumatic tire sealing device for a trailing suction hopper dredger includes a sealing structure fixed to the slider body. The sealing structure includes a sealing seat fixed to the slider body; an outer bushing fixed to the top outer ring of the sealing seat; a suction inlet wear-resistant ring fixed to the top inner ring of the sealing seat; and a pneumatic tire sealing ring disposed on top of the sealing seat and positioned between the outer bushing and the suction inlet wear-resistant ring. The outer bushing, the suction inlet wear-resistant ring, and the pneumatic tire sealing ring are on the same plane away from the sealing seat, forming a sealing surface that abuts against the hull side inlet end face. This utility model allows the pneumatic tire sealing ring to be directly installed between the outer bushing and the suction inlet wear-resistant ring, increasing the pneumatic tire sealing area, improving sealing performance and service life, extending the repair cycle of the wear-resistant blocks, simplifying the disassembly and assembly process, and reducing installation and maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of sealing device technology, and in particular to a novel pneumatic tire sealing device for a trailing suction dredger. Background Technology

[0002] The sliding block air tire sealing device of the trailing suction dredger serves as the end sealing component of the rake arm pipe system, and its sealing performance is highly demanding, as it is related to the sand and soil conveying efficiency of the entire rake arm pipe system; the sliding block wear-resistant block serves as the end connecting component of the rake arm pipe system, and directly seals against the hull side inlet.

[0003] However, the existing pneumatic tire seal ring is inconvenient to disassemble and assemble. When replacing it, the outer bushing, suction wear ring, sealing seat and other components need to be removed. The process is complicated, time-consuming, labor-intensive and difficult to maintain. In addition, the gaseous sealing area is small and the sealing effect is poor. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a new type of pneumatic tire sealing device for a trailing suction dredger.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A novel pneumatic tire sealing device for a trailing suction hopper dredger includes a sealing structure fixed to the slider body, the sealing structure comprising:

[0007] A sealing seat, which is fixedly mounted on the slider body;

[0008] An outer bushing, which is fixed to the top outer ring of the sealing seat;

[0009] A wear-resistant ring for the suction port is fixedly disposed on the top inner ring of the sealing seat;

[0010] And a pneumatic tire seal ring, which is disposed on top of the sealing seat and positioned between the outer liner and the suction port wear ring;

[0011] The outer bushing, the suction inlet wear-resistant ring, and the pneumatic tire sealing ring are on the same plane on the side away from the sealing seat, and form a sealing surface that abuts against the side inlet end face.

[0012] Preferably, a first fastening bolt is provided between the slider body, the sealing seat and the outer bushing, and a second fastening bolt is provided between the sealing seat and the suction port wear ring.

[0013] Preferably, the sealing structure further includes a water seal pressure ring fixed on the lower side of the sealing seat, and a water seal rubber ring is provided between the water seal pressure ring and the sealing seat. The water seal pressure ring is fixedly connected to the sealing seat by a third fastening bolt.

[0014] Preferably, a curved tube is rotatably connected within the slider body, and the outer wall of the curved tube abuts against the water seal ring.

[0015] Preferably, the water seal ring is made of fluororubber and has a V-shaped cross-section.

[0016] Preferably, a gas pressure channel is provided inside the sealing seat, one end of which is connected to the pneumatic tire sealing ring. After being pressurized, the outer wall of the pneumatic tire sealing ring is tightly fitted to the outer liner and the suction port wear ring.

[0017] Preferably, the pneumatic tire seal ring adopts a multi-layer composite rubber structure, with a metal skeleton layer on the inner side and a wear-resistant polyurethane coating on the outer side.

[0018] Compared with the prior art, this utility model provides a novel pneumatic tire sealing device for trailing suction hopper dredgers, which has the following beneficial effects:

[0019] 1. The new pneumatic tire sealing device of this trailing suction dredger increases the sealing area of ​​the pneumatic tire by directly installing the pneumatic tire sealing ring at the wear ring of the suction port, which is more conducive to improving the sealing performance and service life, extending the repair cycle of the wear block, and reducing installation and maintenance costs.

[0020] 2. The new type of pneumatic tire sealing device of this trailing suction dredger allows for direct installation of the pneumatic tire sealing ring onto the suction port wear ring. The pneumatic tire sealing ring can be replaced simply by unscrewing the second bolt and disassembling the suction port wear ring. The disassembly and assembly process is simple and convenient, improving the work efficiency of the staff. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 For the present utility model Figure 1 Enlarged structural diagram of section A in the middle;

[0023] Figure 3 This is a schematic diagram of the sealing seat of this utility model;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the sealing seat of this utility model. Figure 1 ;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the sealing seat of this utility model. Figure 2 .

[0026] In the diagram: 1. Slider body; 2. Pneumatic tire sealing ring; 3. Suction port wear-resistant ring; 4. Water seal rubber ring; 5. Water seal pressure ring; 6. Outer liner ring; 7. Sealing seat; 8. Bend; 9. First fastening bolt; 10. Second fastening bolt; 11. Third fastening bolt; 12. Gas pressure channel. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 Figure 5As shown, this embodiment proposes a novel pneumatic tire sealing device for a trailing suction hopper dredger, including a sealing structure fixed on the slider body 1. The sealing structure includes: a sealing seat 7, an outer bushing 6, a suction port wear-resistant ring 3, and a pneumatic tire sealing ring 2. The sealing seat 7 is fixed on the slider body 1; the outer bushing 6 is fixed on the top outer ring of the sealing seat 7, and the suction port wear-resistant ring 3 is fixed on the top inner ring of the sealing seat 7. The suction port wear-resistant ring 3 is made of high-strength alloy to resist friction. The pneumatic tire sealing ring 2 is set on the top of the sealing seat 7 and placed between the outer bushing 6 and the suction port wear-resistant ring 3. The outer bushing 6, the suction port wear-resistant ring 3, and the pneumatic tire sealing ring 2 are on the same plane on the side away from the sealing seat 7, and form a sealing surface that abuts against the side inlet end face.

[0031] Furthermore, a first fastening bolt 9 is provided between the slider body 1, the sealing seat 7 and the outer bushing 6, and a second fastening bolt 10 is provided between the sealing seat 7 and the suction port wear-resistant ring 3.

[0032] Furthermore, a gas pressure channel 12 is provided inside the sealing seat 7. One end of the gas pressure channel 12 is connected to the air tire sealing ring 2. After being pressurized, the outer wall of the air tire sealing ring 2 is tightly attached to the outer liner ring 6 and the suction port wear-resistant ring 3.

[0033] Specifically, the sealing seat 7 is fixed to the slider body 1 by the first fastening bolt 9, serving as the base of the entire sealing device; the outer liner 6 and the suction port wear-resistant ring 3 are respectively fixed to the outer ring and inner ring at the top of the sealing seat 7 by bolts, forming an annular support frame; the pneumatic sealing ring 2 is embedded between the outer liner 6 and the suction port wear-resistant ring 3, and expands after being inflated; the outer liner 6, the suction port wear-resistant ring 3 and the top of the pneumatic sealing ring 2 are flush, together forming a sealing plane that tightly abuts against the end face of the suction port on the side of the ship;

[0034] During operation: The suction pipe is lowered, and the slider body 1 moves along the ship's side rail to the suction port position on the side of the ship. The mechanical positioning device ensures initial alignment. Compressed air is injected into the air tire seal ring 2 through the gas pressure channel 12. The air tire seal ring 2 expands and, together with the outer liner ring 6 and the suction port wear-resistant ring 3, presses against the end face of the suction port on the side of the ship, forming a sealing barrier. The suction port wear-resistant ring 3 bears the main friction, protecting the air tire seal ring 2 from mechanical wear. After the operation is completed, the control system switches to the venting mode, and the gas in the air tire seal ring 2 is discharged through the solenoid valve. This allows the air tire seal ring 2 to be directly installed at the suction port wear-resistant ring 3, increasing the air tire sealing area, which is more conducive to improving sealing performance and service life, and extending the repair cycle of the wear-resistant block. The air tire seal ring 2 can be replaced simply by unscrewing the second fastening bolt 10 and disassembling the suction port wear-resistant ring 3. The disassembly and assembly process is simple and convenient, which can improve the work efficiency of the staff and reduce the installation and maintenance costs.

[0035] like Figure 1 , Figure 2 and Figure 3As shown, in a preferred embodiment, based on the above method, the sealing structure further includes a water seal pressure ring 5 fixed on the lower side of the sealing seat 7, a water seal rubber ring 4 is provided between the water seal pressure ring 5 and the sealing seat 7, and the water seal pressure ring 5 is fixedly connected to the sealing seat 7 by a third fastening bolt 11.

[0036] Furthermore, a bent tube 8 is rotatably connected inside the slider body 1, and the outer wall of the bent tube 8 moves against the water seal ring 4.

[0037] Specifically, the water seal pressure ring 5 is fixed to the bottom of the sealing seat 7 by the third fastening bolt 11, forming an annular water seal chamber together with the sealing seat 7. Its inner edge adopts a bevel design, forming a compression fit with the water seal rubber ring 4. After installation, the water seal rubber ring 4 dynamically fits against the outer wall of the bend 8. An annular groove can be opened at the bottom of the sealing seat 7 to accommodate the water seal rubber ring 4. The water seal assembly can be disassembled and installed independently without disassembling the air tire sealing ring 2 or the suction port wear ring 3. The air tire sealing ring 2 solves the static end face sealing, while the water seal rubber ring 4 responds to the dynamic displacement of the bend 8. The division of labor is clear and they serve as backups for each other. The water seal structure prevents the wear of mud and sand on the air tire. When the air tire fails, the water seal rubber ring 4 can still maintain the sealing ability, providing emergency protection for the system.

[0038] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, the water seal ring 4 is further made of fluororubber with a V-shaped cross-section. The V-shaped cross-section generates radial expansion force when under pressure, making the water seal ring 4 fit more tightly against the surface of the bend 8, compensating for gap fluctuations caused by vibration or eccentricity, and improving dynamic sealing reliability. In addition, the water seal ring 4 can be provided with a spiral guide groove on the contact surface with the bend 8. When rotating, the spiral groove guides the water flow to form a directional flow, generating a dynamic pressure effect at the sealing interface, converting contact friction into non-contact liquid film lubrication, reducing wear and lowering frictional temperature rise, and ensuring the service life and sealing performance of the water seal structure.

[0039] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, the pneumatic tire sealing ring 2 further adopts a multi-layer composite rubber structure, with a metal skeleton layer on the inner side and a wear-resistant polyurethane coating on the outer side; the metal skeleton can provide rigid support for the pneumatic tire, resist the radial expansion force generated by the air pressure of 0.3-0.5MPa, and prevent the rubber layer from excessively deforming and failing. The wear resistance of the polyurethane coating is 3-5 times that of the rubber, and it is used to resist the erosion of mud and sand, thereby ensuring the service life and sealing performance of the sealing device.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel air tire seal for a trailing suction dredger, comprising a seal structure fixed to a slider body (1), characterized in that, The sealing structure includes: A sealing seat (7) is fixed on the slider body (1); Outer bushing (6), the outer bushing (6) is fixed to the top outer ring of the sealing seat (7); A suction port wear-resistant ring (3) is fixed to the top inner ring of the sealing seat (7); And a pneumatic tire seal ring (2), which is disposed on the top of the sealing seat (7) and placed between the outer liner (6) and the suction port wear ring (3); Among them, the outer liner (6), the suction port wear-resistant ring (3) and the pneumatic tire sealing ring (2) are on the same plane away from the sealing seat (7), and form a sealing surface that abuts against the side entrance end face of the hull.

2. A novel air tire seal for a trailing suction dredger according to claim 1, characterized in that, A first fastening bolt (9) is provided between the slider body (1), the sealing seat (7) and the outer bushing (6), and a second fastening bolt (10) is provided between the sealing seat (7) and the suction port wear ring (3).

3. A novel air tire seal for a trailing suction dredger according to claim 1, characterized in that, The sealing structure also includes a water seal pressure ring (5) fixed on the lower side of the sealing seat (7). A water seal rubber ring (4) is provided between the water seal pressure ring (5) and the sealing seat (7). The water seal pressure ring (5) is fixedly connected to the sealing seat (7) by a third fastening bolt (11).

4. A novel air tire seal for a trailing suction dredger according to claim 3, characterized in that, The slider body (1) is rotatably connected to a bent tube (8), and the outer wall of the bent tube (8) is in contact with the water seal ring (4).

5. A novel air tire seal for a trailing suction dredger according to claim 3, characterized in that, The water seal ring (4) is made of fluororubber and has a V-shaped cross-section.

6. A novel air tire seal for a trailing suction dredger according to claim 3, characterized in that, A gas pressure channel (12) is provided inside the sealing seat (7). One end of the gas pressure channel (12) is connected to the pneumatic tire sealing ring (2). After being pressurized, the outer wall of the pneumatic tire sealing ring (2) is tightly fitted to the outer liner (6) and the suction port wear ring (3).

7. A novel air tire seal for a trailing suction dredger according to claim 5, characterized in that, The pneumatic tire seal ring (2) adopts a multi-layer composite rubber structure, with a metal skeleton layer on the inner side and a wear-resistant polyurethane coating on the outer side.

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