阅读说明：本技术 一种用于船舶的喷射水泵 (Jet water pump for ship ) 是由 方德宇 徐洁 于 2021-09-22 设计创作，主要内容包括：本发明涉及流体机械领域,具体是指一种用于船舶的喷射水泵,包括第一泵壳及第二泵壳,所述第一泵壳内部安装设有第一叶轮,所述第二泵壳内部安装设有第二叶轮,所述第一叶轮由轮盘及与轮盘同轴连接的轮轴组成,所述轮盘设有轮轴一侧盘面沿径向设有叶槽,所述轮轴外周面沿轴线设有叶片,所述第一泵壳靠近轮轴一侧与进口管道连接,所述第一叶轮远离叶槽一侧与设置于第一泵壳外部的驱动装置输出端轴连接,所述第二泵壳出口设有喷射管,所述第一泵壳靠近轮盘边缘处壳体通过导流管与第二泵壳进口连接。(The invention relates to the field of fluid machinery, in particular to an injection water pump for a ship, which comprises a first pump shell and a second pump shell, wherein a first impeller is arranged in the first pump shell, a second impeller is arranged in the second pump shell, the first impeller consists of a wheel disc and a wheel shaft coaxially connected with the wheel disc, a blade groove is arranged on the disc surface on one side, provided with the wheel shaft, of the wheel disc in the radial direction, blades are arranged on the peripheral surface of the wheel shaft in the axial direction, one side, close to the wheel shaft, of the first pump shell is connected with an inlet pipeline, one side, far away from the blade groove, of the first impeller is connected with an output end shaft of a driving device arranged outside the first pump shell, an outlet of the second pump shell is provided with an injection pipe, and the shell, close to the edge of the wheel disc, of the first pump shell is connected with an inlet of the second pump shell through a guide pipe.)

1. A jet water pump for a marine vessel, characterized by: comprises a first pump shell (1) and a second pump shell (4), a first impeller (7) is arranged in the first pump shell (1), a second impeller (8) is arranged in the second pump shell (4), the first impeller (7) consists of a wheel disc (701) and a wheel shaft (702) which is coaxially connected with the wheel disc (701), the disk surface of one side of the wheel disk (701) provided with the wheel axle (702) is provided with a blade groove (703) along the radial direction, blades (704) are arranged on the outer peripheral surface of the wheel shaft (702) along the axial line, one side of the first pump shell (1) close to the wheel shaft (702) is connected with the inlet pipeline (3), one side of the first impeller (7) far away from the impeller groove (703) is connected with an output end shaft of a driving device (2) arranged outside the first pump shell (1), an outlet of the second pump shell (4) is provided with an injection pipe (5), and the shell, close to the edge of the wheel disc (701), of the first pump shell (1) is connected with an inlet of the second pump shell (4) through a flow guide pipe (10).

2. The jet water pump for a ship according to claim 1, characterized in that: and the central shaft of the second impeller (8) is in power connection with a transmission shaft of the ship.

3. The jet water pump for a ship according to claim 1, characterized in that: the outer peripheral surface of the second impeller (8) is provided with a spiral groove along the axial direction.

4. The jet water pump for a ship according to claim 1, characterized in that: the blade profile of the blade (704) is a spiral sheet structure around the outer circumferential surface of the wheel shaft (702).

5. The jet water pump for a ship according to claim 1, characterized in that: the body of the injection pipe (5) is provided with an adjusting valve (9).

6. The jet water pump for a ship according to claim 1, characterized in that: the inlet pipeline (3) is of an L-shaped structure.

7. The jet water pump for a ship according to claim 1, characterized in that: and the bottom of the driving device (2) is provided with a mounting base (6) for connecting a ship.

Technical Field

The invention relates to the field of fluid machinery, in particular to an injection water pump for a ship.

Background

The propeller is installed on the blade propeller thruster product at the tail part of the ship body of an aircraft carrier, a warship and a civil ship close to the lower part of the waterline, the blade propeller thruster product is very heavy and has large cost, two fifths of blades are blocked on the ship body, and two fifths of water flow columns are scattered on the ship body in operation, so that the problem of two fifths of back-flushing resistance can be solved; secondly, the pump-spraying type propeller product has the advantages of light weight, quick effect and low investment, but the pump-spraying type propeller product is the same as a vane propeller, is used for water dispersion movement and does not have a certain effective range function for water flow column propulsion, no matter the pump-spraying type propeller product is used for water dispersion movement, no matter the pump-spraying type propeller product is used for water intake with three inlets and five outlets when drinking water, if a water outlet pipe is arranged, the cubic volume of water is larger than the pipe diameter but has resistance, and if the pump-spraying type propeller product is used for water intake with five inlets and three outlets, the pump-spraying type propeller product also has no too large range effect for water flow column propulsion; when a traditional ship turns, the course of the ship can be adjusted only by depending on a rudder arranged at the tail of a ship body, the turning radius is large, the course is difficult to change rapidly in case of emergency, and then the two conventional propeller products have the problems existing in the facts in the use and operation processes.

Disclosure of Invention

In order to solve the technical problems, the technical scheme provided by the invention is as follows: the injection water pump for the ship comprises a first pump shell and a second pump shell, wherein a first impeller is arranged in the first pump shell, a second impeller is arranged in the second pump shell, the first impeller is composed of a wheel disc and a wheel shaft coaxially connected with the wheel disc, a blade groove is formed in the disc surface on one side, provided with the wheel shaft, of the wheel disc along the radial direction, blades are arranged on the outer peripheral surface of the wheel shaft along the axial line, one side, close to the wheel shaft, of the first pump shell is connected with an inlet pipeline, one side, far away from the blade groove, of the first impeller is connected with an output end shaft of a driving device arranged outside the first pump shell, an injection pipe is arranged at an outlet of the second pump shell, and the shell, close to the edge of the wheel disc, of the first pump shell is connected with an inlet of the second pump shell through a flow guide pipe.

As an improvement, the central shaft of the second impeller is in power connection with a transmission shaft of the ship.

As an improvement, the outer peripheral surface of the second impeller is provided with a spiral groove along the axial direction.

As an improvement, the blade profile is a spiral sheet structure around the outer circumferential surface of the wheel shaft.

As an improvement, the body of the injection pipe is provided with a regulating valve.

As an improvement, the inlet pipeline is of an L-shaped structure.

As an improvement, the bottom of the driving device is provided with a mounting base for connecting a ship.

After adopting the structure, the invention has the following advantages:

after adopting the structure, the invention has the following advantages:

1. the cavitation phenomenon at the contact position of the blade and water can be prevented in the working process of the propulsion device, and the fatigue damage of the surface material of the blade is reduced;

2. the device has the advantages of compact structure, high transmission efficiency and large driving force generated by unit volume, and the device is easy to produce and manufacture according to the actual requirement of the ship on matching the power and the rotating speed of the engine.

3. Compared with the traditional ship propeller, the jet devices are arranged on two sides of the ship body, and the output power of the jet devices on the two sides is changed to drive the ship to quickly steer.

Drawings

FIG. 1 is a schematic view of a first perspective of the exterior of a jet water pump;

FIG. 2 is a schematic diagram of a second perspective view of the exterior of the jet pump;

FIG. 3 is a schematic view of the internal structure of the jet water pump;

fig. 4 is a schematic view of the first impeller structure.

As shown in fig. 1-4: 1. the device comprises a first pump shell, a second pump shell, a driving device, a first pump shell, a second pump shell, a third pump shell, a fourth pump shell, a fifth pump shell, a sixth pump shell, a seventh pump shell, a sixth pump shell, a seventh pump shell, a sixth pump shell, a seventh pump shell, a sixth pump shell, a mounting base, a fifth pump shell, a fourth pump shell, a sixth pump shell, a fourth pump shell, a fourth pump, a sixth pump, a fourth pump, a sixth pump, a fourth pump.

Detailed Description

With reference to fig. 1-4, an injection water pump for a ship includes a first pump housing 1 and a second pump housing 4, a first impeller 7 is installed inside the first pump housing 1, a second impeller 8 is installed inside the second pump housing 4, the first impeller 7 is composed of a wheel disc 701 and a wheel shaft 702 coaxially connected with the wheel disc 701, a vane groove 703 is radially formed in the disc surface on the side where the wheel shaft 702 is arranged on the wheel disc 701, vanes 704 are axially arranged on the outer peripheral surface of the wheel shaft 702, the side of the first pump housing 1 close to the wheel shaft 702 is connected with an inlet pipeline 3, the side of the first impeller 7 far away from the vane groove 703 is connected with an output end shaft of a driving device 2 arranged outside the first pump housing 1, an outlet of the second pump housing 4 is provided with an injection pipe 5, and a housing close to the edge of the wheel disc 701 of the first pump housing 1 is connected with an inlet of the second pump housing 4 through a guide pipe 10.

As a preferred embodiment of the present embodiment, the central shaft of the second impeller 8 is in power connection with the transmission shaft of the ship.

As a preferred embodiment of this embodiment, the outer peripheral surface of the second impeller 8 is provided with a spiral groove along the axial direction.

In the preferred embodiment, the blades 704 are spiral blades around the outer circumference of the axle 702.

In the preferred embodiment of this embodiment, the pipe body of the injection pipe 5 is provided with a regulating valve 9.

As a preferred embodiment of the present embodiment, the inlet duct 3 is provided in an L-shaped configuration.

As a preferred embodiment of the embodiment, the bottom of the driving device 2 is provided with a mounting base 6 for connecting with a ship.

In the specific implementation of the invention, as shown in fig. 1-4, the driving device 2 drives the first impeller 7 to rotate, water flow enters the first pump housing 1 through the inlet pipe 3, the water flow firstly passes through the blades 704 and is accelerated along the axial direction of the wheel shaft 702 to enter the blade groove 703, then the water flow is accelerated radially through the blade groove 703 to become high-pressure high-speed fluid, the fluid enters the second pump housing 4 through the guide pipe 10, and is accelerated twice through the second impeller 8 and is sprayed out from the spray pipe 5, the sprayed water applies a reaction force to the spray water pump, and the reaction force pushes the ship to run.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.