CN214985994U

CN214985994U - Propeller for water jet propeller

Info

Publication number: CN214985994U
Application number: CN202120504546.6U
Authority: CN
Inventors: 周华
Original assignee: Changzhou Tuke Intelligent Technology Co ltd
Current assignee: Changzhou Tuke Intelligent Technology Co ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-12-03
Anticipated expiration: 2031-03-09

Abstract

The utility model relates to a screw for water jet propulsion ware, including rotation axis and paddle, paddle and rotation axis fixed connection, the paddle adopts carbon fiber prepreg cloth curing molding. The paddle is formed by curing the conventional carbon fiber prepreg cloth instead of the conventional metal material, so that the strength and the hardness of the paddle are improved, and the weight of the paddle is reduced, so that the rotating speed of the propeller during operation can be increased, the rotating speed can reach 8000-8500 revolutions per minute under the condition of the same output power, and the generated static thrust reaches 75-80 kg.

Description

Propeller for water jet propeller

Technical Field

The utility model relates to a water jet propulsion ware technical field, concretely relates to screw for water jet propulsion ware.

Background

The performance of the water jet propeller, which is used as a core power component on the electric surfboard, directly determines the performance of the whole electric surfboard.

The water jet propeller comprises a shell and an internal propeller, and water is introduced from an inlet of the shell and then is sprayed out from an outlet of the shell through the high-speed rotation of the propeller, so that the propelling force is obtained.

The problems of the existing water jet propeller are as follows: the shell and the propeller are made of metal materials, the machining center is adopted to manufacture the shell and the propeller, the whole mass of the water-jet propeller is large, the rotating speed is difficult to be increased, the rotating speed of the water-jet propeller needs to be very high when the water-jet propeller works, and the weight of the whole water-jet propeller needs to be reduced for increasing the rotating speed and the propelling force of the water-jet propeller.

At present, in order to reduce the weight of the water jet propeller, the water jet propeller is mainly manufactured by adopting aluminum alloy or carbon alloy, but the highest rotating speed can only reach 7500 revolutions per minute, and compared with foreign countries, the difference still exists, and a larger improvement rising space still exists.

In summary, the existing water-jet propeller has the problems that the shell and the propeller have large mass and the rotating speed cannot be increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, the screw propeller for the water jet propeller is provided, and the problems that the weight is large and the rotating speed cannot be increased due to the fact that the screw propeller is made of metal materials in the existing water jet propeller are solved.

The utility model provides a technical scheme that its technical problem adopted is:

there is provided a propeller for a water jet propeller comprising

The blade is fixedly connected with the rotating shaft and is formed by curing carbon fiber prepreg cloth.

Furthermore, a positioning sleeve is fixedly arranged on the rotating shaft, and a pair of positioning grooves is formed on the positioning sleeve;

the paddle is arranged outside the positioning sleeve, and the positioning inner protrusion on the paddle is matched with the positioning groove, so that the rotating shaft and the paddle rotate synchronously.

Further, the blade comprises a connecting sleeve and at least two blades, and the connecting sleeve is formed by winding and curing carbon fiber prepreg cloth outside the positioning sleeve;

the blade is made of carbon fiber prepreg cloth, and the root of the blade and the connecting sleeve are integrally cured and molded.

Furthermore, the front end of the connecting sleeve is connected with a flow guide cover, and the rotating shaft penetrates out of the flow guide cover.

Furthermore, at least one pin hole is formed in each of the positioning sleeve and the rotating shaft, and each pin is inserted into the pin hole of each positioning sleeve and the pin hole of each rotating shaft, so that the pins and the rotating shafts are fixedly connected.

The utility model has the advantages that:

the propeller for the water jet propeller is provided, the paddle is formed by curing the conventional carbon fiber prepreg cloth instead of the conventional metal material, the strength and the hardness of the paddle are improved, and the weight of the paddle is reduced, so that the rotating speed of the propeller during operation can be increased, the rotating speed can reach 8000-8500 revolutions per minute under the condition of the same output power, and the generated static thrust reaches 75-80 kg.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

FIG. 1 is a perspective view of a propeller;

FIG. 2 is a front view of the propeller;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is a view showing the construction of the position sleeve and the rotation shaft;

the device comprises a rotating shaft, a rotating blade, a connecting sleeve, a blade, a guide cover, a positioning sleeve, a positioning groove, a pin and a guide cover, wherein the rotating shaft is 2, the rotating blade is 3, the blade is 31, the connecting sleeve is 32, the blade is 33, the guide cover is 4, the positioning sleeve is 41, and the positioning groove is 42.

Detailed Description

The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

Screw among water jet propulsion adopts the metal material to make out through machining center, then through the bolt-up on rotation axis 2, and traditional this kind of manufacturing method has increased the weight of screw, has restricted the promotion of rotational speed, consequently, has developed a screw that adopts carbon fiber prepreg cloth to make.

As shown in fig. 1 to 4, the propeller for the water jet propeller comprises a rotating shaft 2 and blades 3, wherein the blades 3 are fixedly connected with the rotating shaft 2, and the blades 3 are formed by curing carbon fiber prepreg cloth.

Specifically, as an optional implementation manner in this embodiment, as shown in fig. 4, a positioning sleeve 4 is fixedly disposed on the rotating shaft 2, and a pair of positioning grooves 41 is formed on the positioning sleeve 4; the paddle 3 is arranged outside the positioning sleeve 4, and the positioning inner protrusion on the paddle 3 is matched with the positioning groove 41, so that the rotating shaft 2 and the paddle 3 rotate synchronously.

Specifically, as an optional implementation manner in this embodiment, the blade 3 includes a connecting sleeve 31 and at least two blades 32, and the connecting sleeve 31 is formed by winding carbon fiber prepreg cloth outside the positioning sleeve 4 and curing; the blade 32 is made of carbon fiber prepreg cloth, and the root of the blade 32 and the connecting sleeve 31 are integrally cured and molded.

In this embodiment, the number of the blades 3 is three.

Specifically, as an optional implementation manner in this embodiment, the front end of the connecting sleeve 4 is connected to the air guide sleeve 33, and the rotating shaft 2 penetrates through the air guide sleeve 33.

The flow guide sleeve 33 is arranged to guide the water flow to the blades 32.

Specifically, as an optional implementation manner in this embodiment, at least one pin hole is formed in each of the positioning sleeve 4 and the rotating shaft 2, and each pin 42 is inserted into the pin hole of each of the positioning sleeve 4 and the rotating shaft 2, so that the pin 42 and the rotating shaft 2 are fixedly connected.

In this embodiment, the number of the pin holes is three, and three pins 42 are inserted into the positioning sleeve 4 and the rotating shaft 2, so that the positioning sleeve 4 is fixedly connected with the rotating shaft 2.

In the present embodiment, the first and second electrodes are,

the manufacturing process of the propeller comprises the following steps: firstly, a rotating shaft 2 and a positioning sleeve 4 are machined, the positioning sleeve 4 is fixed on the rotating shaft 2, carbon fiber prepreg cloth is directly purchased and obtained in the market, the carbon fiber prepreg cloth is wound on the positioning sleeve 4 to form a connecting sleeve 31 of a blade 3, because the positioning sleeve 4 is provided with a positioning groove 41, the positioning groove 41 is filled and buried in the carbon fiber prepreg cloth during winding, the cylindrical connecting sleeve 31 is obtained, then three carbon fiber prepreg cloths used for manufacturing the blade 32 are selected, the root of the blade 32 is connected with the connecting sleeve 31, when in connection, the resin in the blade 32 and the resin in the connecting sleeve 31 are mutually fused, then the pressure and the heat are applied in a forming mold to cure and form the resin in the carbon fiber prepreg cloth of the connecting sleeve 31 and the blade 32, and the mold for preparing the blade 3 and the mold pressing parameters are not specifically disclosed, after curing, the propeller is taken out, the structures of the connecting sleeve 31 and the blades 32 on the connecting shaft are fixed, the connecting sleeve 31 and the blades 32 are both formed by curing carbon fiber prepreg cloth, the integral quality is reduced, the strength and the hardness of the cured blade 3 are higher than those of metal, higher rotating speed can be output during operation, the rotating speed can reach 8000 plus 8500 revolutions per minute under the condition of the same output power, and the generated static thrust reaches 75-80 kg.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A propeller for a water jet propeller is characterized by comprising

The paddle is fixedly connected with the rotating shaft;

the rotating shaft is fixedly provided with a positioning sleeve, and a pair of positioning grooves are formed in the positioning sleeve;

2. The propeller for a water jet propeller as claimed in claim 1,

the blade comprises a connecting sleeve and at least two blades, and the connecting sleeve is formed by winding, curing and molding carbon fiber prepreg cloth outside the positioning sleeve;

3. The propeller for a water jet propeller as claimed in claim 2, wherein,

the front end of the connecting sleeve is connected with the air guide sleeve, and the rotating shaft penetrates out of the air guide sleeve.

4. The propeller for a water jet propeller as claimed in claim 1,

at least one pin hole is formed in each of the positioning sleeve and the rotating shaft, and each pin is inserted into the pin hole of each positioning sleeve and the pin hole of each rotating shaft respectively so that the pins and the rotating shafts are fixedly connected.