CN201800890U - Ship division end face sealing device - Google Patents

Abstract

The utility model relates to a sealing device for the end face of a ship's compartment, which is used for water sealing between shafting compartments of various ships. The shell is connected with the bulkhead of the ship, and the diaphragm is driven by the collar fixed on the shaft to rotate synchronously with the shaft. The two ends of the diaphragm can respectively form a sealing friction pair with the two ends of the inner side of the shell with the function of water sealing. When water enters any compartment on both sides of the bulkhead, the end surface of one side of the membrane disc will be in close contact with the end surface of one side of the shell under the thrust of the water pressure, automatically isolating the flow of water to the other compartment. There is no mutual sliding between the O-ring seal in the groove of the membrane disc and the shaft surface, which reduces the wear of the O-ring seal, prolongs the service life of the O-ring seal, and improves the sealing performance of the device. The shell, diaphragm and collar all adopt the Huff structure, which is convenient for emergency maintenance and replacement when the ship is underway. Compact structure, reliable sealing and long service life.

Description

Ship compartment end face sealing device

technical field

The utility model relates to a sealing device for the end face of a ship's compartment, which is used for water sealing between shafting compartments of various ships.

Background technique

As a compartment end face sealing device, it should be able to function as a water seal when any compartment on both sides of the bulkhead of the ship is flooded, preventing water from entering the other compartment.

In the existing compartment end face sealing device, the diaphragm disc is set on the shaft, and the water seal between the diaphragm disc and the shaft surface is realized by means of the O-ring in the groove of the diaphragm disc; Under the action of the thrust, the end face is tightly attached to the inner end face of the shell, automatically preventing water from flowing to the other side of the bulkhead through the gap between the end faces, so as to realize the water seal of the shafting between the ship's compartments. Since the power transmission between the diaphragm (together with the O-ring in the groove) and the shaft is only maintained by the sliding friction between themselves, in the normal working process due to the change of the transmitted power or the inertia of the diaphragm, it will frequently The relative sliding between the diaphragm disc (together with the O-ring in the groove) and the shaft surface will cause rapid wear of the O-ring, and eventually the device will lose its sealing function.

Utility model content

The purpose of this utility model is to overcome the above-mentioned disadvantages and provide a new type of power transmission structure of the membrane disc, so as to avoid abrasion caused by relative sliding between the membrane disc (together with the O-ring in the groove) and the shaft surface during operation.

The main solution of the utility model is achieved in this way:

The shell is connected with the bulkhead of the ship, and the collar is fixedly connected to the shaft by bolts. The diaphragm set on the shaft (together with the O-ring sealing ring in the groove) is driven by the collar to rotate synchronously with the shaft. The two ends of the diaphragm can be separated A sealing friction pair with a water sealing function is formed with the two inner sides of the housing. When water enters any compartment on both sides of the bulkhead, one side of the membrane disc will be tightly attached to the end surface of one side of the shell under the thrust of the water pressure, and the water will be automatically isolated from flowing to the other compartment. Due to the synchronous rotation of the diaphragm and the shaft, there is no relative sliding between the diaphragm (together with the O-ring in the groove) and the surface of the shaft, which reduces the wear of the O-ring, prolongs the service life, and improves the safety of the device. Sealing performance. The shell, membrane disc and collar all adopt the Huff structure, and are connected as a whole by bolts and taper pins, which is convenient for emergency repair and replacement when the ship is underway.

Compared with the prior art, the utility model has the following advantages:

The utility model is suitable for the compartment seal of various types of ship shafting, and adopts a new type of membrane disc power transmission structure, which can avoid the relative sliding between the membrane disc (together with the O-shaped sealing ring in the groove) and the shaft surface during operation. wear and tear. Compact structure, reliable sealing and long service life.

Description of drawings

Fig. 1 is the general assembly drawing of the utility model ship compartment end face sealing device;

Fig. 2 is the front view of the component assembly structure of the collar in the utility model;

Fig. 3 is a cross-sectional view of the component assembly structure of the collar in the present invention.

Detailed ways

Below the utility model will be further described in conjunction with the embodiment in the accompanying drawing:

As shown in accompanying drawing 1, the utility model is made up of parts such as housing 1, clamp ring 2, diaphragm 3, nylon sleeve 4, cylindrical pin 5, O-ring 6 and some bolts, pins. The shell 1 is connected with the bulkhead by screws, and the end surface of the diaphragm 3 is evenly distributed with dimples matching with the cylindrical pins 5, and nylon sleeves 4 are arranged in each dimple. An O-ring 6 is used for water sealing between the diaphragm 3 and the shaft surface, and the O-ring 6 is installed in the groove of the diaphragm 3 . The diaphragm 3 (together with the O-ring 6 in the groove) is set on the shaft, and the clamp ring 2 fixed on the shaft drives the diaphragm 3 (together with the O-ring 6 in the groove) through the cylindrical pin 5 The shaft rotates synchronously, avoiding the sliding between the diaphragm 3 (together with the O-ring 6 in the groove) and the shaft surface, reducing the wear of the O-ring 6 and prolonging the service life of the O-ring 6. The sealing performance of the device is improved. When water enters any compartment on both sides of the compartment, the end surface of the membrane disc 3 is closely attached to the inner end surface of the housing 1 under the thrust of the water pressure, and the water is automatically isolated from flowing to the other compartment. The nylon sleeve 4 is used to protect the film disc 3 from being worn by the cylindrical pin 5 . The shell 1, collar 2, and membrane disc 3 all adopt the Huff structure, and are connected as a whole by screws and pins, which is convenient for emergency maintenance of equipment failure and replacement of parts during the ship's navigation. The shell 1 and collar 2 are made of aluminum-nickel bronze, tin bronze, aluminum bronze or cast steel, and the diaphragm 3 is made of filled PTFE or rubber.

As shown in Figure 2 and Figure 3, it is a schematic diagram of the component assembly structure of the collar 2 in the present invention. The collar 2 adopts the Huff type, which is fixedly connected to the shaft by screws. The clamp ring 2 is evenly distributed circumferentially with no less than 4 cylindrical pins 5, which are used to drive the diaphragm 3 (together with the O-ring 6 in the groove) to rotate synchronously with the shaft.

Claims (4)

1. boats and ships separation face seals of forming by housing (1), collar (2), membranous disc (3), nylon jacket (4), straight pin (5), O RunddichtringO (6) and parts such as some bolts, pin, it is characterized in that housing (1) connects with the ship boundary bulkhead, membranous disc (3) rotates with axle by collar (2) drive that connects firmly on axle synchronously together with the O-ring seals in the groove (6), and the both ends of the surface of membranous disc (3) can respectively and form the sealing friction pair with water-stop function between the inboard both ends of the surface of housing (1).

2. boats and ships separation face seals according to claim 1 is characterized in that described collar (2) is Hough formula structure, by bolt itself and axle is fixedly connected, and circumferential uniform being fastened with of collar (2) is no less than 4 straight pins (5).

3. boats and ships separation face seals according to claim 1 is characterized in that being evenly equipped with the pit that matches with straight pin (5) on the described membranous disc (3), respectively is provided with nylon jacket (4) in the pit.

4. boats and ships separation face seals according to claim 1 is characterized in that described housing (1) and collar (2) adopt yorcalnic, tin bronze, albronze or cast steel material to make; Membranous disc (3) adopts filling tetrafluoro or elastomeric material to make.

Images