CN203717408U

CN203717408U - Adjustable nozzle of water-spray boosting axial flow pump

Info

Publication number: CN203717408U
Application number: CN201320790443.6U
Authority: CN
Inventors: 李臣
Original assignee: Dalian Maritime University
Current assignee: Dalian Maritime University
Priority date: 2013-12-05
Filing date: 2013-12-05
Publication date: 2014-07-16
Anticipated expiration: 2023-12-05

Abstract

The utility model discloses an adjustable nozzle of a water-spray boosting axial flow pump. First rolling bearings (6) are respectively arranged at an upper end and a lower end of a main nozzle of the water-spray boosting axial flow pump; second rolling bearings (9) are respectively arranged at an upper end and a lower end of an attached nozzle (4); the first rolling bearings (6) and the second rolling bearings (9) at the upper ends and the lower ends are connected through connecting rods (5); a first thread (7) is arranged on the outer edge of the main nozzle; a second thread (8) which is fit with the first thread (7) is arranged on the inner edge of the tail end of the attached nozzle (4).

Description

The adjustable spout of axial flow pump for water jet propulsion

Technical field

The utility model relates to the adjustable spout of a kind of axial flow pump for water jet propulsion.

Background technique

At present, the raising of the hydraulic jet propulsion speed of a ship or plane is main still by improving main engine power, increasing engine speed realizes, speed increasing method is single, Security and the maneuverability of the naval vessels of applying hydraulic jet propulsion are subject to certain restrictions, if particularly in case of emergency engine speed raising does not get on to injure the safety of naval vessels.

Model utility content

The purpose of this utility model is: in order to solve the problem of above-mentioned prior art, provide a kind of axial flow pump for water jet propulsion adjustable spout.

For achieving the above object, the technical solution adopted in the utility model is: at upper and lower two ends, axial flow pump for water jet propulsion main injection jet place, the first rolling bearing 6 is set respectively, the two ends up and down of additional spout 4 arrange respectively the second rolling bearing 9, between first rolling bearing 6 at upper and lower two ends and the second rolling bearing 9, be connected by a connecting rod 5, main injection jet place outer rim arranges the first screw thread 7, the second screw thread 8 that the tail end inner edge setting of additional spout 4 coordinates with the first screw thread 7, the bore of additional spout 4 is less than main injection jet.

The beneficial effects of the utility model are: reduce jet pipe sectional area and improve discharge velocity, driving mechanism is simple and practical, easily realizes, workable, good airproof performance.

Brief description of the drawings

Fig. 1 is the structural drawing of the adjustable spout of the utility model axial flow pump for water jet propulsion.

Accompanying drawing mark: 4-adds spout, 5-connecting rod, 6-the first rolling bearing, 7-the first screw thread, 8-the second screw thread, 9-the second rolling bearing.

Embodiment

Below in conjunction with drawings and Examples, the utility model is elaborated.

As shown in Figure 1, at upper and lower two ends, axial flow pump for water jet propulsion main injection jet place, the first rolling bearing 6 is set respectively, the two ends up and down of additional spout 4 arrange respectively the second rolling bearing 9, between first rolling bearing 6 at upper and lower two ends and the second rolling bearing 9, be connected by a connecting rod 5, main injection jet place outer rim arranges the first screw thread 7, the second screw thread 8 that the tail end inner edge setting of additional spout 4 coordinates with the first screw thread 7, the bore of additional spout 4 is less than main injection jet.

Specification: connecting rod is set, regulates spout, add and regulate spout to link together by connecting rod, the first rolling bearing, the second rolling bearing and main injection jet at main injection jet afterbody, connect to reduce surface friction drag by rolling bearing and ensure manual dexterity, when work, sealing is engaged to ensure by the first screw thread and the second screw thread place, prevent fluid leakage, the area of efflux of additional spout reduces, thereby improves discharge velocity.

Above content is the further description of the utility model being done in conjunction with optimal technical scheme, can not assert that the concrete enforcement of model utility only limits to these explanations.Concerning the utility model person of an ordinary skill in the technical field, not departing under the prerequisite of design of the present utility model, can also make simple deduction and replacement, all should be considered as protection domain of the present utility model.

Claims

1. the adjustable spout of axial flow pump for water jet propulsion, it is characterized in that, at upper and lower two ends, axial flow pump for water jet propulsion main injection jet place, the first rolling bearing (6) is set respectively, the two ends up and down of additional spout (4) arrange respectively the second rolling bearing (9), between first rolling bearing (6) at upper and lower two ends and the second rolling bearing (9), be connected by a connecting rod (5), main injection jet place outer rim arranges the first screw thread (7), the second screw thread (8) that the tail end inner edge setting of additional spout (4) coordinates with the first screw thread (7), the bore of additional spout (4) is less than main injection jet.