CN2771100Y

CN2771100Y - Hydrojet propeller

Info

Publication number: CN2771100Y
Application number: CN 200520101094
Authority: CN
Inventors: 胡济荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-22
Filing date: 2005-03-22
Publication date: 2006-04-12
Anticipated expiration: 2015-03-22

Abstract

The utility model relates to a hydraulic propeller arranged at the tail of a ship. The utility model comprises a spray pipe (14) arranged in the tail of the ship, a water inlet (6) arranged on the lower part of the tail of the ship and connected with the front of the spray pipe, and a converging pipe (15) arranged at the tail of the ship and connected with the back of the spray pipe. The inner parts of a water inlet pipe (5) and the spray pipe (14) are respectively provided with a front bearing bracket (3) and a back bearing bracket (12). The bearing brackets are provided with drive shafts fixed by airscrews (10), and a plurality of flow guiding sheets (16) are fixed along the circumference of the spray pipe behind the airscrews. Flow adjusting caps (17) are arranged in the central position behind the flow guiding sheets (16). The utility model can effectively solve the problems of easy damage to the airscrews, low propulsion efficiency, and big interference to the traveling ships when the ship travels and particularly travels in shallow water areas. The utility model has the advantages of simple structure, reliable work, and convenient dismounting and maintenance.

Description

A kind of pump jet

Technical field

The utility model relates to a kind of propelling unit, especially relates to a kind of pump jet.

Background technology

At present, the propelling unit of water craft or other marine communication means generally is to adopt stern that the tail propulsion mode of propeller is installed.This angle of rake screw propeller and rudder all expose in the hull outside, and require screw propeller to insert the suitable depth of water, just can give full play to the efficient of screw propeller, and be not too suitable in the shallow water territory; Boats and ships under sail, when particularly navigating by water in the shallow water territory, foreign material such as branch in the water, wood, rivers bottom sandstone etc. easily collide screw propeller, make screw propeller impaired.In the prior art as on September 13rd, 2000 Granted publication name be called the ZL99215811.7 utility model patent of " water jet boats and ships model propelling unit ", solved the exposed easily impaired outside problem of screw propeller, but very effectively not improve and form huge eddy current meiobar when angle of rake propulsion coefficient and solution boats and ships or other marine communication means speed of a ship or plane improve on the quarter, influence the propulsion coefficient and the operating characteristic of boats and ships itself, the sinuous flow wave of this eddy current meiobar formation is big simultaneously, shippping traffic is caused the problem of very big interference.

Summary of the invention

Technical problem to be solved in the utility model provide a kind of can be in shallow water territory work, can be antiwind, anticollision, the propulsion coefficient height forms the pump jet of the little and easy accessibility of ripples during navigation.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted provides a kind of pump jet, be arranged on the hull afterbody, it comprises the water jet standpipe that is located in the hull afterbody, be arranged on the water inlet that links to each other with water jet standpipe the place ahead and the convergence pipe that is arranged on stern and links to each other of stern bottom with the water jet standpipe rear, before in coolant inlet pipe and water jet standpipe, being respectively equipped with, rear bearing rack, bearing support is provided with transmission shaft, on transmission shaft, be fixed with screw propeller, rear at screw propeller is fixed with n flow deflector along the water jet standpipe circumference, is fixed with the rectification cap in the center at flow deflector rear;

Between the outer wall of inwall of restraining pipe and rectification cap, be provided with n sheet riser bar;

Inlet end face at water inlet is provided with grille guard;

Rear at the front bearing support is provided with water seal, is provided with water seal in the place ahead of rear bearing rack; At front bearing

The place ahead of support is provided with O type circle, is provided with O type circle at the rear of rear bearing rack;

Convergence pipe outlet middle position hinged a deflector, in deflector, vertically be provided with a water conservancy diversion

Plate;

Transmission shaft is made up of front propeller shaft and rear propeller shaft, and they are connected by plunging joint;

N=2-16 in flow deflector and the riser bar;

N=12 in flow deflector and the riser bar.

Adopt the utility model can effectively solve boats and ships when navigation, screw propeller is fragile when navigate by water in the shallow water territory especially, propulsion coefficient is low, and to the big problem of passing ships interference, the utility model is simple in structure, reliable operation, dismounting are easy to maintenance.

The utility model will be elaborated in conjunction with the accompanying drawings by embodiment.

Description of drawings

Fig. 1: the utility model example structure scheme drawing.

The specific embodiment

In conjunction with the accompanying drawings 1, be described in detail specific embodiments of the present utility model.

In Fig. 1, a kind of pump jet, be arranged on the hull afterbody, it comprises water jet standpipe 14, water inlet 6 that links to each other with water jet standpipe the place ahead that is arranged on the stern bottom and the convergence pipe 15 that is arranged on stern and links to each other with the water jet standpipe rear that is located in the hull afterbody, in coolant inlet pipe 5 and water jet standpipe 14, be respectively equipped with forward and backward bearing

support

3,12, bearing support is provided with transmission shaft, on transmission shaft, be fixed with screw propeller 10, rear at screw propeller is fixed with 12 flow deflectors 16 along the water jet standpipe circumference, is fixed with rectification cap 17 in the center at flow deflector 16 rears.Be provided with 12 riser bars 18 between the outer wall of inwall of restraining pipe 15 and rectification cap 17, flow deflector 16 and riser bar 18 should align when mounted.Inlet end face at water inlet 6 is provided with grille guard 7; Be provided with water seal 4 at the rear of front bearing support 3, be provided with water seal 11 in the place ahead of rear bearing rack 12, be provided with O type circle 2 in the place ahead of front bearing support 3, be provided with O type circle 13 at the rear of rear bearing rack 12, can prevent that effectively sealing enters bearing by water seal and O type circle, prevent that the bearing rust rotation is ineffective.Convergence pipe 15 outlet middle positions hinged a deflector 19, in deflector 19, vertically be provided with a deflecting plate 20, can play little rotation of deflector and cause the corresponding rotational angle of boats and ships fast.Be made up of front propeller shaft 1 and rear propeller shaft 9 at transmission shaft, they are connected by spline adapter sleeve 8.Be convenient to the dismounting and the maintenance of each several part on the transmission shaft.

Whole pump jet is arranged in the boats and ships body, and screw propeller is arranged in the angle of rake water jet standpipe, the exposed outward screw propeller of hull, in the time of can effectively avoiding navigating by water with foreign material in the water and under water firmly thing collide the damage screw propeller.Boats and ships allow the screw propeller twirl by aboard ship power system of dress, water is sucked from water inlet 6, move after the effect sharply by 10 high speed revolutions of the screw propeller in the water jet standpipe 14, through flow deflector 16, the water conservancy diversion of rectification cap 17 and riser bar 18 and valve action, effectively improve the sinuous flow in the huge eddy current meiobar that forms behind the screw propeller high speed revolution, make the huge sinuous flow of this strand form the current that direction is roughly the same, again through the 15 convergence pressurizations of convergence pipe, will sharply behind ship, spray from the water outlet of restraining pipe with bigger impulse force and more speed, make boats and ships obtain very high propulsion coefficient and fltting speed.So not only improve propulsion coefficient, increase the speed of a ship or plane, can also reduce the vibrations of stern and reduce the wave stirring, reduce interference passing ships.By deflector 19 effects, can change the direction of ejection water, thrust is convertible into rudder power, and ship can be bent to right left.In the ship's navigation process, water inlet 6 usefulness grille guard nets are sealed, and can block that foreign material enter water jet standpipe in the water, avoid the screw propeller in the water jet standpipe to be wound, and are collided; Current pass through water jet standpipe, screw propeller rotates after flow deflector, rectification cap and riser bar rectification, screw propeller can be rotated the back is improved at the sinuous flow of the eddy current meiobar of its rear portion formation, so not only improve propulsion coefficient, increase the speed of a ship or plane, can also reduce the vibrations of stern and reduce the wave stirring, reduction is to the interference of passing ships, again through restraining the pressurization of pipe, because of the caliber of convergence pipe less than the caliber of water jet standpipe, current will sharply spray behind ship from the water outlet of restraining pipe with bigger impulse force and more speed, the antagonistic force of water promptly is a thrust, can effectively improve the propulsion coefficient and the fltting speed of boats and ships.

Claims

1. pump jet, be arranged on the hull afterbody, it comprises the water jet standpipe (14) that is located in the hull afterbody, be arranged on the water inlet (6) that links to each other with water jet standpipe the place ahead and the convergence pipe (15) that is arranged on stern and links to each other of stern bottom with the water jet standpipe rear, before in coolant inlet pipe (5) and water jet standpipe (14), being respectively equipped with, rear bearing rack (3), (12), bearing support is provided with transmission shaft, on transmission shaft, be fixed with screw propeller (10), it is characterized in that being fixed with n flow deflector (16) along the water jet standpipe circumference, be fixed with rectification cap (17) in the center at flow deflector (16) rear at the rear of screw propeller.

2. pump jet according to claim 1 is characterized in that being provided with n sheet riser bar (18) between the outer wall of inwall of restraining pipe (15) and rectification cap (17).

3. pump jet according to claim 1 is characterized in that being provided with grille guard (7) in the inlet end face of water inlet (6).

4. pump jet according to claim 1 is characterized in that being provided with water seal (4) at the rear of front bearing support (3), is provided with water seal (11) in the place ahead of rear bearing rack (12).

5. pump jet according to claim 1 is characterized in that being provided with O type circle (2) in the place ahead of front bearing support (3), is provided with O type circle (13) at the rear of rear bearing rack (12).

6. pump jet according to claim 1, it is characterized in that convergence pipe (15) outlet middle position hinged a deflector (19), in deflector (19), vertically be provided with a deflecting plate (20).

7. pump jet according to claim 1 is characterized in that being made up of front propeller shaft (1) and rear propeller shaft (9) at transmission shaft, and they are connected by plunging joint (8).

8. pump jet according to claim 1 and 2 is characterized in that n=2-16.

9. pump jet according to claim 8 is characterized in that at n=12.