CN202674317U - End face sealing device for stern shaft of spray-type ship - Google Patents

Abstract

The utility model relates to an end face sealing device for a stern shaft of a spray-type ship. The end face sealing device for the stern shaft of the spray-type ship comprises a stern shaft, a stern tube base, mounting base, a sealing ring bracket, a sealing ring, a supporting ring and a transmission chuck. A wear-resisting groove is arranged on the end surface of the supporting ring contacting with the sealing ring around the circumferential direction of the end surface. A wear-resisting layer is sprayed inside the wear-resisting groove. The end face of the wear-resisting layer is flush with the end face of the supporting ring. The end face sealing device for the stern shaft of the spray-type ship is wear-resisting and strong in adaptability to silt and other terrible conditions in the operating environment of a ship. Service life of the end face sealing device for the stern shaft is prolonged; maintenance frequency of shafting seal of the ship is reduced; and time of ship navigation is prolonged.

Description

Spraying type marine stern shaft end face sealing device

technical field

The utility model relates to a water sealing device for various ship propulsion shafting stern tubes, in particular to a spray-painted ship stern shaft end face sealing device.

Background technique

The traditional anti-shock type end face sealing device of ship stern shaft (see patent No. 200810024665.0) will lead to a gradual increase in the amount of water leakage due to the increase in the wear of the relative moving surface of the sealing friction pair, and it is harmful to the harsh environment in the water, such as sediment Poor adaptability, etc., reduces the life of the stern shaft sealing device, and will affect the normal navigation of the ship in severe cases.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a spray-painted ship stern shaft end face sealing device which has the function of wear resistance and adapts to the working conditions of axial and radial large impact deformation.

According to the technical solution provided by the utility model, the spray-painted ship stern shaft end face sealing device includes a stern shaft, a stern tube seat, an installation base, a seal ring bracket, a seal ring, a support ring and a transmission chuck, a stern tube seat, The installation base, sealing ring bracket, sealing ring, support ring and transmission chuck are all sleeved on the stern shaft, the stern tube seat is fixed on the installation base, the first main collar is installed on the installation base, and the sealing ring support The second main collar is installed on the frame, and an elastic compensation body is arranged between the first main collar and the second main collar. The first main collar and the second main collar are connected by an adjusting screw. The positioning pin is fixed on the ring bracket, the sealing ring is installed on the positioning pin, the sealing ring is in contact with the end face of the support ring, and the transmission chuck is fixed on the support ring; the inner wall of the installation base and the A first cooling water cavity is formed between the outer walls of the stern shaft, a second cooling water cavity is formed between the inner wall of the seal ring bracket and the outer wall of the stern shaft, and a cooling water that communicates with the first cooling water cavity is opened on the mounting base The channel is provided with a wear-resistant groove around its circumference on the end surface of the support ring in contact with the sealing ring, and a wear-resistant layer is sprayed in the wear-resistant groove, and the end surface of the wear-resistant layer is flush with the corresponding end surface of the support ring.

The depth of the wear-resistant groove is 0.5-0.7mm.

A compression ring is fixed on the installation base, and an inflatable sealing body is fixed in the installation base through the compression ring. A supporting air nozzle is fixed in the inflatable sealing body, and an air channel connected with the supporting air nozzle is provided on the installation base.

A splash guard is sleeved and fixed on the sealing ring bracket.

The utility model is wear-resistant, and has stronger adaptability to harsh conditions such as sediment in the ship operating environment. Extend the service life of the stern shaft sealing device, reduce the maintenance frequency of the shaft seal, and prolong the sailing time of the ship.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Below in conjunction with specific accompanying drawing and embodiment the utility model is further described.

As shown in the figure, the spray-painted ship stern shaft end face sealing device includes a stern shaft 6, a stern tube seat 3, an installation base 1, a seal ring bracket 12, a seal ring 13, a support ring 15 and a transmission chuck 4, and the stern tube Seat 3, installation base 1, sealing ring bracket 12, sealing ring 13, support ring 15 and transmission chuck 4 are all set on the stern shaft 6, and the stern tube seat 3 is fixed on the installation base 1, and on the installation base 1 The first main collar 8 is installed, the second main collar 9 is installed on the sealing ring bracket 12, and the elastic compensation body 7 is arranged between the first main collar 8 and the second main collar 9, the first The main collar 8 and the second main collar 9 are connected by an adjusting screw 20, and a positioning pin 14 is fixed on the sealing ring bracket 12, and the sealing ring 13 is installed on the positioning pin 14, and the sealing ring 13 and The end faces of the support ring 15 are in contact, and the transmission chuck 4 is fixed on the support ring 15; the first cooling water chamber 2 is formed between the inner wall of the mounting base 1 and the outer wall of the stern shaft 6, and the sealing ring bracket A second cooling water cavity 26 is formed between the inner wall of 12 and the outer wall of the stern shaft 6, and a cooling water channel 25 communicating with the first cooling water cavity 2 is opened on the installation base 1, and a supporting ring in contact with the sealing ring 13 15 is provided with a wear-resistant groove 10 around its circumference, and a wear-resistant layer 11 is sprayed in the wear-resistant groove 10. The end surface of the wear-resistant layer 11 is flush with the corresponding end surface of the support ring 15, as shown in FIG. 1 The left end surface of the wear-resistant layer 11 is flush with the left end surface of the support ring 15 , and the groove width of the wear-resistant groove 10 is larger than that of the seal ring 13 at the contact position with the end surface of the support ring 15 .

The depth of the wear-resistant groove 10 is 0.5-0.7mm.

A pressure ring 21 is fixed on the installation base 1 , and an inflatable sealing body 23 is fixed in the installation base 1 through the pressure ring 21 . A supporting air nozzle 28 is fixed inside the inflatable sealing body 23 , and an air channel 24 connected with the supporting air nozzle 28 is opened on the installation base 1 .

A splash guard 27 is sleeved and fixed on the sealing ring bracket 12 .

In the utility model, a wear-resistant groove 10 of 0.5-0.7 mm is processed on the end surface of the support ring 15 in contact with the sealing ring 13, and the wear-resistant layer 11 is sprayed in the wear-resistant groove 10. When the friction pair is a split structure , the wear-resistant groove 10 leaves a certain gap on both sides of the Huff surface, so that the sprayed layer is broken, and the sprayed layer is prevented from being broken due to the removal of the workpiece. Finishing after the cemented carbide spraying is finished so that the left end surface of the wear-resistant layer 11 and the support ring 15 are on the same plane.

Claims (5)

1. A spray-painted ship stern shaft end face sealing device, including a stern shaft (6), a stern tube seat (3), an installation base (1), a seal ring bracket (12), a seal ring (13), a support ring ( 15) and transmission chuck (4), stern tube seat (3), installation base (1), sealing ring bracket (12), sealing ring (13), support ring (15) and transmission chuck (4) Sleeved on the stern shaft (6), the stern tube seat (3) is fixed on the installation base (1), the first main collar (8) is installed on the installation base (1), and the sealing ring bracket (12 ) is installed with the second main collar (9), and an elastic compensation body (7) is arranged between the first main collar (8) and the second main collar (9). The first main collar (8) It is connected with the second main collar (9) through the adjustment screw (20), and the positioning pin (14) is fixed on the sealing ring bracket (12), and the sealing ring is installed on the positioning pin (14) (13), the sealing ring (13) is in contact with the end surface of the support ring (15), and the transmission chuck (4) is fixed on the support ring (15); the inner wall of the installation base (1) and the stern shaft The first cooling water cavity (2) is formed between the outer walls of (6), and the second cooling water cavity (26) is formed between the inner wall of the seal ring bracket (12) and the outer wall of the stern shaft (6). (1) is provided with a cooling water channel (25) communicating with the first cooling water cavity (2), which is characterized in that: on the end surface of the support ring (15) in contact with the sealing ring (13), it surrounds its circumference A wear-resistant groove (10) is provided, and a wear-resistant layer (11) is sprayed in the wear-resistant groove (10), and the end face of the wear-resistant layer (11) is flush with the corresponding end face of the support ring (15). 2. The spray-painted ship stern shaft end face sealing device according to claim 1, characterized in that: the wear-resistant groove (10) has a depth of 0.5-0.7mm. 3. The spray-painted ship stern shaft end face sealing device according to claim 1, characterized in that: a pressure ring (21) is fixed on the installation base (1), and the pressure ring (21) passes through the installation base (1) An inflatable sealing body (23) is fixed. 4. The spray-painted ship stern shaft end face sealing device according to claim 3, characterized in that: a supporting air nozzle (28) is fixed in the inflatable sealing body (23), and a supporting air nozzle (28) is provided on the installation base (1). The air duct (24) that the valve (28) is connected to. 5. The spray-painted ship stern shaft end face sealing device according to claim 1, characterized in that: a splash guard (27) is sleeved and fixed on the seal ring bracket (12).

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