Double-suction five-screw pump
A five-screw and screw technology, applied to pumps, pump components, rotary piston pumps, etc., can solve the problems of large structural shape, large rotor size, large axial force, etc., to increase area, improve vibration level, and reduce displacement Effect
Pending Publication Date: 2020-12-01
中国船舶重工集团公司第七0四研究所
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Problems solved by technology
[0010] The purpose of the present invention is to overcome the disadvantages of general five-screw pumps such as relatively large axial force, larger structural shape after capacity expansion, and difficult processing of large rotors, further optimize the vibration and noise level of five-screw pumps, and provide a new type of double-suction five-screw pump. The structure of the screw pump improves the installation and maintainability of the five-screw pump, and the structure for transmitting the axial force of the driven screw is separated from the main rod of the driven screw as a separate part, which effectively improves the maintainability of the part and cancels the driven screw. The upper and lower bearings of the screw make the structure simpler and achieve the purpose of improving the vibration and noise of the five-screw pump to a certain extent
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[0029] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and processes are provided, but the protection scope of the present invention is not limited to the following implementations example.
[0030] like Figure 2 to Figure 4 As shown, the double-suction five-screw pump of the present invention includes a seal 1 , a pump body 2 , a driving screw 3 , a driven screw 4 , a driven screw axial force transmission device 5 , an auxiliary bearing device 6 , and a screw bushing 7 . The pump body 2 is equipped with a driving screw 3 and four driven screws 4 meshed with the driving screw 3. A seal 1 is provided between the upper end of the driving screw 3 and the pump body upper cover at the upper end of the pump body 2. The driving screw 3 The upper end is connected with the pum...
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The invention relates to a double-suction five-screw pump. A driving screw and four driven screws meshed with the driving screw are mounted in a pump body, and the driven screws and the pump body areconnected by screw bushings instead of bearings to reduce vibration of the bearings. Driven screw axial force transmission devices are connected between the driving screw and the driven screws, and axial force borne by the driven screws is transmitted to the driving screw through the driven screw axial force transmission devices. The lower end of the driving screw is connected with a pump body lower cover through an auxiliary bearing device. Suction inlets or discharge outlets are formed in two sides of the pump body to form a double-suction structure. The double-suction structure is adopted,so that the axial force generated by the driven screws of a five-screw pump can be effectively reduced, and uniform stress of the driven screws is ensured. Bearings at two ends of the driven screws are omitted, areas of an inlet cavity and an outlet cavity are increased, displacement of the inlet cavity and the outlet cavity is reduced, vibration level can be effectively improved, and outlet liquid flow unevenness caused by outlet displacement is reduced.
Description
technical field [0001] The invention relates to a double-suction five-screw pump, in particular to a double-suction five-screw pump used for transporting lubricating oil or other media. Background technique [0002] Five-screw pump is used as medium conveying equipment such as lubricating oil. It has the advantages of compact overall structure, small size and weight. It is often used as lubricating oil conveying in ship power system. Active screw, four driven screws), and bearings are arranged on the upper and lower sides of each rotor to ensure the reliable operation of each screw rotor. When the driving device is used to drive the active screw to rotate, it will drive the driven screw to rotate to complete the delivery of lubricating oil. [0003] Conventional five-screw pump structure, such as figure 1 As shown, due to the pressure difference between the inlet and outlet chambers and the weight of the rotor, an axial force is generated from the outlet to the inlet, and ...
Claims
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IPC IPC(8): F04C2/16F04C15/06F04C15/00
CPCF04C2/165F04C15/0042F04C15/06
Inventor朱殿璞吕伟领李兵魏丹丹聂书彬张维勇刘瑞青
Owner中国船舶重工集团公司第七0四研究所