CN215972056U

CN215972056U - Marine propeller

Info

Publication number: CN215972056U
Application number: CN202122184699.XU
Authority: CN
Inventors: 陈倩清; 李云; 金涛
Original assignee: Zhejiang International Maritime College
Current assignee: Zhejiang International Maritime College
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-03-08
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses a marine propeller, and particularly relates to the technical field of ship parts, which comprises a propeller guide pipe, wherein a propeller main shaft is arranged in the propeller guide pipe, a cutting knife group and a propeller hub are sequentially arranged on the propeller main shaft from outside to inside, a plurality of propeller blades are fixed on the propeller hub, a filter screen is arranged between the cutting knife group and the propeller hub, the cutting knife group fully cuts a winding object in water, the filter screen blocks the winding object to prevent the winding object from winding the propeller blades, the normal operation of propeller equipment is ensured, and the safety is improved.

Description

Marine propeller

Technical Field

The utility model relates to the technical field of ship parts, in particular to a marine propeller.

Background

The propeller is a device which rotates in the air or water by means of blades and converts the rotating power of an engine into propulsive force, and can be a propeller with two or more blades connected with a hub, wherein the backward surface of each blade is a spiral surface or a surface similar to the spiral surface. The propellers are divided into a plurality of types and are widely applied, such as propellers of aircrafts and ships.

Different from the situation that an airplane flies in the air, when the ship sails in water, various winding objects can affect the operation of the propeller, when the propeller is wound by the winding objects, the problem that the ship can not sail can be solved in time, the winding objects are cut by sailing personnel, the efficiency is low, and certain danger exists.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a marine propeller.

The technical scheme provided by the utility model is as follows:

the utility model provides a marine propeller, includes the screw pipe, be equipped with the screw main shaft in the screw pipe, the screw main shaft is equipped with cutting knife tackle, propeller hub from outer to interior in proper order, fixed a plurality of propeller blades on the propeller hub, be equipped with the filter screen between cutting knife tackle and propeller hub.

The edge of the filter screen is in interference fit with the inner wall of the propeller guide pipe, and a through hole for passing through a propeller main shaft is formed in the middle of the filter screen.

The filter screen is hemispherical.

The filter screen is equipped with the cutting blade towards the outside surface.

The cutting knife group comprises a cutting knife hub sleeved on the propeller main shaft, and a plurality of centrosymmetric radian spiral cutting edges are fixed on the cutting knife hub.

The propeller blade is provided with a trailing edge and a leading edge, and the trailing edge is in a comb tooth shape.

The propeller blade is provided with a through hole close to the end of the propeller hub.

The filter screen is stainless steel.

The utility model has the beneficial effects that: according to the utility model, the cutting knife set and the filter screen are arranged, so that the winding objects in water are fully cut and blocked, the winding objects are prevented from winding the propeller blades, the normal operation of the propeller equipment is ensured, and the safety is improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a projected profile view of an propeller blade according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be further described with reference to the accompanying drawings.

As shown in the figure, a marine propeller, including

screw pipe

1, 1 is equipped with screw main shaft 2 in the screw pipe, screw main shaft 2 is by being equipped with cutting knife tackle 6, propeller hub 3 in proper order outward, fixed a plurality of propeller blades 4 on the propeller hub 3, be equipped with filter screen 7 between cutting knife tackle 6 and propeller hub 3, cutting knife tackle 6 can cut the winding, and the filter screen can block the winding, ensures screw normal operating.

In this embodiment, the edge of the filter screen 7 is in interference fit with the inner wall of the propeller guide pipe 1, and the middle of the filter screen 7 is provided with a through hole 9 for passing through the propeller main shaft 2. The filter screen 7 is the hemisphere, the filter screen is equipped with cutting blade 8 towards the outside surface, its surface area of hemispherical filter screen is big, the winding is after 6 cutting of cutting knife tackle, if the size of filter screen 7 filtration pore is not reached, then blocked outside filter screen 7, cutting blade 8 on the filter screen 7 can further cut the winding, the winding can not contact with propeller blade 4, if the winding reaches enough little filtration pore that can pass through filter screen 7 through the cutting, also can not exert an influence to the normal operating of screw, thereby guarantee the normal operating of screw equipment, and the security is improved. Because the filter screen is in the aquatic for a long time, the filter screen is stainless steel material, improves its ability of being corroded.

In this embodiment, the cutter unit 6 includes that the cutter hub 5 of screw main shaft 2 is located to the cover, fixed a plurality of centrosymmetric radian spiral cutting edges on the cutter hub 5, cutter unit 6 cuts along with the rotation of main shaft, need not to set up motor drive alone, has practiced thrift power resource.

In the present embodiment, the propeller blade 4 has the trailing edge 41 and the leading edge 43, and the trailing edge 41 has a comb-tooth shape, which is more helpful to divide the discrete concentrated vortexes, suppress cavitation bubbles, and reduce noise generated when the propeller blade rotates.

In this embodiment, the end of the propeller blade 4 close to the propeller hub 3 is provided with a through hole 42, the through hole 42 forms a water flow from the blade surface to the blade back, and the water flow forms a cavitation pad on the blade back, so that cavitation generated by the blade does not directly contact with the blade back, and the propeller propulsion efficiency is improved.

The examples should not be construed as limiting the utility model, and any non-inventive modifications made based on the spirit of the utility model should be construed as being within the scope of the utility model.

Claims

1. A marine propeller characterized by: including screw pipe (1), be equipped with screw main shaft (2) in screw pipe (1), screw main shaft (2) are by outer to interior cutting knife tackle (6), propeller hub (3) of being equipped with in proper order, fixed a plurality of propeller blade (4) on propeller hub (3), be equipped with filter screen (7) between cutting knife tackle (6) and propeller hub (3).

2. A marine propeller as claimed in claim 1, wherein: the edge of the filter screen (7) is in interference fit with the inner wall of the propeller guide pipe (1), and a through hole (9) used for passing through the propeller main shaft (2) is formed in the middle of the filter screen (7).

3. A marine propeller as claimed in claim 1, wherein: the filter screen (7) is hemispherical.

4. A marine propeller as claimed in claim 1, wherein: and the outward side surface of the filter screen (7) is provided with a cutting blade (8).

5. A marine propeller as claimed in claim 1, wherein: the cutting knife group (6) comprises a cutting knife hub (5) sleeved on the propeller main shaft (2), and a plurality of centrosymmetric radian spiral cutting edges are fixed on the cutting knife hub (5).

6. A marine propeller as claimed in claim 1, wherein: the propeller blade (4) is provided with a following edge (41) and a guide edge (43), and the following edge (41) is in a comb tooth shape.

7. A marine propeller as claimed in claim 1, wherein: the end, close to the propeller hub (3), of the propeller blade (4) is provided with a through hole (42).

8. A marine propeller as claimed in claim 1, wherein: the filter screen (7) is made of stainless steel.