CN219257661U

CN219257661U - Annular propeller

Info

Publication number: CN219257661U
Application number: CN202320207129.4U
Authority: CN
Inventors: 梁伟聪
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-06-27
Anticipated expiration: 2033-02-10

Abstract

The utility model discloses an annular propeller, which comprises a unit annular propeller, wherein the unit annular propeller comprises: the central axis of the propeller shaft is the rotation axis of the unit annular propeller, the blades are provided with an upper side end and a lower side end which are respectively connected with the propeller shaft, the upper side end and the lower side end extend outwards from the side part of the propeller shaft and are connected outside the propeller shaft to form a ring with holes on the propeller shaft, the number of the blades is multiple, and the blades are arranged on the side part of the propeller shaft around the central axis of the propeller shaft. The utility model can be used on ships such as rubber boats, yachts, ships, etc., when the paddle shaft rotates, the paddle can rotate along with the rotation, and the holes on the annular paddle can allow water flow to pass through, so that the water flow discharging efficiency is improved, the cavitation is reduced, the noise of the annular screw propeller when in use is reduced, the resistance of the annular screw propeller can be reduced, and the propulsion efficiency of the annular screw propeller is improved.

Description

Annular propeller

Technical Field

The utility model relates to the field of propeller design, in particular to an annular propeller.

Background

Screw propellers are often arranged on ships such as rubber boats, yachts and ships, and the blades of the screw propellers can rotate in water under the drive of an engine so as to convert the rotation power of the engine into propelling force.

The blades of the propeller commonly used on ships today are often in the form of twisted blades, as shown in fig. 1. However, the front surface of the propeller in the shape has large area, and the water flow is discharged with low efficiency, so that more cavitation bubbles are formed on the propeller, and particularly the cavitation bubbles are formed obviously when the propeller runs at a high speed.

The existence of a large amount of cavitation bubbles can increase the resistance and reduce the thrust of the propeller, so that the propulsion efficiency of the propeller is greatly reduced, and the cavitation bubbles can generate sound when being broken, so that the noise of the propeller when in use is increased.

Disclosure of Invention

The object of the present utility model is to provide a ring propeller which solves one or more of the above mentioned problems.

According to an aspect of the present utility model, there is provided an annular propeller including a unit annular propeller including:

a paddle shaft, the central axis of the paddle shaft is the rotation axis of the unit annular propeller,

the paddle, the paddle has the upside end and the downside end that are connected with the oar axle respectively, upside end and downside end outwards extend from the lateral part of oar axle to be connected in the oar axle outside in order to form foraminiferous ring on the oar axle, the paddle is a plurality of, a plurality of paddles arrange around the central axis of oar axle on the lateral part of oar axle.

The beneficial effects of the utility model are as follows: the utility model can be used on ships such as rubber boats, yachts, ships, etc., when the paddle shaft rotates, the paddle can rotate along with the rotation, and the holes on the annular paddle can allow water flow to pass through, so that the water flow discharging efficiency is improved, the cavitation is reduced, the noise of the annular screw propeller when in use is reduced, the resistance of the annular screw propeller can be reduced, and the propulsion efficiency of the annular screw propeller is improved.

In some embodiments, the helical direction of a plurality of said paddles is the same.

In some embodiments, after a certain rotation of the shaft, the blades can be moved to and overlap adjacent blades. Therefore, the balance of the plurality of paddles arranged on the paddle shaft can be guaranteed to be good, and the propelling power is stable during use.

In some embodiments, the number of the unit annular propellers is several, the propeller shafts of the several unit annular propellers are sequentially connected, and the rotation axes of the several unit annular propellers are all on the same straight line.

In some embodiments, the number of the unit annular propellers is two, and the spiral directions of the blades of the two unit annular propellers are opposite. In this way, the two unit annular propellers can rotate synchronously, and the water flow sent by the front unit annular propellers can be effectively utilized by the rear unit annular propellers, so that interference is reduced, and propulsion efficiency is improved.

In some embodiments, the number of blades of two said unit annular propellers is the same, and the plurality of blades of one said unit annular propeller are in one-to-one correspondence with the plurality of blades of the other said unit annular propeller. Therefore, the annular propeller can better ensure that the propulsion power is more stable when in use.

In some embodiments, the inner wall of the bore of the ring is provided with a guide groove. The guide groove can guide the direction of water flow.

In some embodiments, the ring has a hole size that is one third or more of the entire blade. This ensures that the effect of the annular blade is sufficiently pronounced.

Drawings

Fig. 1 is a schematic structural view of a unit annular propeller of an annular propeller according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a blade of an annular propeller according to an embodiment of the present utility model.

Fig. 3 is a schematic structural view of an annular propeller according to an embodiment of the present utility model.

In the figure: 1. the unit ring propellers, 11, propeller shafts, 12, paddles, 13, holes, 121, upper side ends, 122, lower side ends and 131, guide grooves.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

Example 1

Referring to fig. 1 and 2, an annular propeller of the present embodiment includes a unit annular propeller 1, and the unit annular propeller 1 is preferably one.

The unit annular propeller 1 comprises a propeller shaft 11, the propeller shaft 11 is cylindrical, the inside of the propeller shaft 11 is hollow, the central axis of the propeller shaft 11 is the rotation axis of the unit annular propeller 1, and one end of the propeller shaft 11 can be provided with a groove, so that when the propeller shaft 11 is connected with an external driving device such as a motor or a plurality of propeller shafts 11, the connection area between the propeller shaft 11 and the external driving device or the plurality of propeller shafts 11 is increased, and the connection reliability between the propeller shafts is improved.

The unit annular propeller 1 further comprises a blade 12, the blade 12 having an upper end 121 and a lower end 122, the upper end 121 and the lower end 122 being respectively fixedly connected with the sides of the propeller shaft 11 in an integrally formed manner, and the upper end 121 and the lower end 122 extending outwardly from the sides of the propeller shaft 11 and being integrally connected outside the propeller shaft 11 to form a ring with holes 13 on the propeller shaft 11.

The number of the blades 12 on the unit annular propeller 1 can be plural, in this embodiment, the number of the blades 12 is preferably three, the three blades 12 are arranged on the side of the propeller shaft 11 around the central axis of the propeller shaft 11, and the spiral directions of the three blades 12 are the same, that is, when the central axis of the propeller shaft 11 is arranged perpendicular to the horizontal plane, the highest points of the three blades 12 are all the same on the side of the lowest point thereof, in this embodiment, the highest points of the three blades 12 are all located on the right side of the lowest point thereof.

The three blades 12 are all identical in shape and are uniformly distributed on the same height of the shaft 11, so that the shaft 11 can be rotated by a certain angle, preferably 120 degrees, and the blades 12 can be moved to and overlapped with the adjacent blades 12.

The inner wall of the ring hole 13 on the blades 12 of the unit annular propeller 1 is also provided with a guide groove 131, the guide groove 131 being capable of guiding the flow of water passing through it. And the size of the holes 13 of the ring is one third or more of the whole blade 12 to ensure that the holes 13 have a sufficient effect.

The annular propeller of the embodiment can be used on ships such as rubber boats, yachts and ships, when the propeller shaft 11 rotates, the propeller blades 12 can rotate along with the ships, and the holes 13 on the annular propeller blades 12 can allow water flow to pass through, so that the water flow discharging efficiency is improved, cavitation is reduced, the noise of the annular propeller when the annular propeller is used is reduced, the resistance of the annular propeller can be reduced, and the propulsion efficiency of the annular propeller is improved.

Example 2

Referring to fig. 1, 2 and 3, an annular propeller of the present embodiment includes a plurality of unit annular propellers 1, and in the present embodiment, the number of unit annular propellers 1 can be two.

Each unit annular propeller 1 comprises a propeller shaft 11, the propeller shaft 11 is cylindrical, the inside of the propeller shaft 11 is hollow, the central axis of the propeller shaft 11 is the rotation axis of the unit annular propeller 1, and one end of the propeller shaft 11 can be provided with a groove, so that when the propeller shaft 11 is connected with an external driving device such as a motor or a plurality of propeller shafts 11, the connection area between the propeller shaft 11 and the external driving device or the plurality of propeller shafts 11 is increased, and the connection reliability between the propeller shafts is improved.

The propeller shafts 11 of the two unit annular propellers 1 are sequentially connected, so that the two unit annular propellers 1 can synchronously rotate, and the rotation axes of the two connected unit annular propellers 1 are all on the same straight line.

The directions of the propellers 12 of the two unit annular propellers 1 are opposite, that is, when the central axis of the propeller shaft 11 is arranged perpendicular to the horizontal plane, the highest point of the propellers 12 of the two unit annular propellers 1 is located on the opposite side of the lowest point, in the embodiment, the highest point of one of the propellers 12 of the one unit annular propeller 1 is located on the right side of the lowest point, and the highest point of one of the propellers 12 of the other unit annular propeller 1 is located on the left side of the lowest point.

And the number of the blades 12 of the two unit annular propellers 1 is the same, and is preferably three, and after the propeller shafts 11 of the two unit annular propellers 1 are connected, the plurality of blades 12 of one unit annular propeller 1 are opposite to the plurality of blades 12 of the other unit annular propeller 1 in a one-to-one correspondence manner, namely when the central axis of the propeller shaft 11 is perpendicular to the horizontal plane, the plurality of blades 12 of one unit annular propeller 1 can be positioned above the plurality of blades 12 of the other unit annular propeller 1 in a one-to-one correspondence manner.

The utility model can be used on boats such as rubber boats, yachts, ships, etc., when the propeller shaft 11 of each unit annular propeller 1 rotates, the blades 12 can rotate along with the rotation, and the holes on the annular blades 12 can allow water flow to pass through, so that the water flow discharging efficiency is improved, cavitation is reduced, the occurrence of noise is reduced, the resistance to the unit annular propeller 1 can be reduced, and the propulsion efficiency of the unit annular propeller 1 is improved. Simultaneously, two unit annular propellers 1 can rotate synchronously to the rivers that the unit annular propellers 1 in place ahead sent can be effectively utilized by the unit annular propellers 1 in place behind, reduce the interference and improve propulsion efficiency.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. The annular screw, its characterized in that includes the annular screw of unit, the annular screw of unit includes:

2. The ring propeller of claim 1, wherein the helical directions of a plurality of the blades are the same.

3. The ring propeller of claim 2, wherein the blades are movable to and overlap adjacent blades after a certain rotation of the shaft.

4. The annular propeller according to claim 1, wherein the number of the unit annular propellers is several, the propeller shafts of the several unit annular propellers are connected in sequence, and the rotation axes of the several unit annular propellers are all on the same straight line.

5. The ring propeller of claim 4, wherein the number of the unit ring propellers is two, and the spiral directions of the blades of the two unit ring propellers are opposite.

6. The ring propeller of claim 5, wherein the number of blades of two of the unit ring propellers is the same, and the plurality of blades of one of the unit ring propellers are opposite to the plurality of blades of the other of the unit ring propellers in one-to-one correspondence.

7. The ring propeller according to claim 1, wherein the inner wall of the bore of the ring is provided with a guiding groove.

8. The ring propeller of claim 1, wherein the ring has a hole size of one third or more of the entire blade.