CN-224233489-U - Sealing structure of underwater propulsion motor

CN224233489UCN 224233489 UCN224233489 UCN 224233489UCN-224233489-U

Abstract

The utility model provides a sealing structure of an underwater propulsion motor, which comprises a cylindrical shell, rotor paddles, driving components, sealing covers and oil seals, wherein the mounting base is arranged on the side wall of the upper end of the shell, mounting holes and wire holes are formed in the mounting base, the rotor paddles comprise a cylinder body which is rotatably arranged in the shell, paddles are circumferentially uniformly distributed on the inner wall of the cylinder body, the driving components comprise coil windings and permanent magnets, sealing plugs or filling sealing glue are arranged in the wire holes, the sealing covers are two and are fixed at two ends of the shell through bolts, sealing rings and/or sealing gaskets are arranged between the sealing covers and the shell, the oil seals are arranged on the sealing covers, sealing lips of the oil seals are in contact with the outer wall of the cylinder body to realize sealing, and sealing cavities are formed among the shell, the rotor paddles and the sealing covers. The sealing structure of the underwater propulsion motor has the advantages of compact structure, strong driving force, high use safety, long service life, low working noise, good use experience and wide application scene.

Inventors

LU XINCHUN
ZHU QINQING
ZHANG SHIWEI
GUO SHIHAN
Sun Peidan
ZHAO HUALI
OUYANG ZHE
XIE XUBO

Assignees

宁波元辰新材料有限公司

Dates

Publication Date: 20260512
Application Date: 20250530

Claims (10)

1. A sealing structure of an underwater propulsion motor, comprising: The shell is horizontally arranged and is cylindrical with two open ends, the side wall of the upper end of the shell is provided with a mounting seat, and the mounting seat is provided with a mounting hole and a wire hole; The rotor paddle comprises a cylinder body which is coaxial with the shell and is provided with two open ends, the cylinder body is rotatably arranged in the shell through a bearing, and a plurality of paddles are uniformly distributed on the circumference of the inner wall of the cylinder body; The driving assembly comprises a coil winding arranged on the inner wall of the shell and a permanent magnet arranged on the outer wall of the cylinder body and positioned on the same radial surface with the coil winding, a wire on the coil winding passes through the wire hole and then extends out of the shell, and a sealing plug or filling sealant is arranged in the wire hole; The two sealing covers are fixed at two ends of the shell through bolts, and sealing rings and/or sealing gaskets are arranged between the sealing covers and the shell; The oil seal is arranged on the sealing cover, and a sealing lip of the oil seal is contacted with the outer wall of the cylinder body to realize sealing; And a sealing chamber is formed among the shell, the rotor paddle and the sealing cover.
2. The underwater propulsion motor sealing structure as claimed in claim 1, wherein the sealing chamber is filled with inert gas.
3. The underwater propulsion motor sealing structure as claimed in claim 2, wherein the inert gas is nitrogen, argon or carbon dioxide.
4. The underwater propulsion motor sealing structure as claimed in claim 1, wherein the end portion of the sealing cover extends axially inwards and forms a first connecting portion which can be just inserted into the open end of the housing, one or more sealing rings are arranged between the outer wall of the first connecting portion and the inner wall of the housing, and a sealing gasket is arranged between the end face of the sealing cover and the end face of the housing.
5. The seal structure of an underwater propulsion motor as claimed in claim 4, wherein both end portions of the cylinder are extended axially outwardly and form a second connection portion, and the bearing is installed between the first connection portion and the second connection portion.
6. The seal structure of an underwater propulsion motor as claimed in claim 5, wherein an end portion of the second connecting portion extends axially outwardly and forms a seal portion, and a seal lip of the oil seal is in contact with an outer wall of the seal portion.
7. The underwater propulsion motor sealing structure as claimed in claim 5, wherein a sealing sleeve is fixed on the outer wall of the end portion of the second connecting portion through a sealing glue, and a sealing lip of the oil seal is in contact with the outer wall of the sealing sleeve.
8. The underwater propulsion motor's seal as in claim 7, wherein the inner wall of the sealing sleeve is a bevel.
9. The underwater propulsion motor's seal as claimed in claim 7, wherein the seal cartridge is made of stainless steel or aluminum alloy.
10. The underwater propulsion motor sealing structure as claimed in claim 1, wherein the outer end of the sealing cover is an arc surface protruding outwards and forms a diversion surface.

Description

Sealing structure of underwater propulsion motor Technical Field The utility model relates to a propeller, in particular to a sealing structure of an underwater propulsion motor. Background With the development of Chinese economy, the income level and the consumption level of people are obviously improved, the continuous development and maturity of third industry and tourism industry are promoted, and the entertainment projects pursued by people are also confusing and eight. In recent years, the amusement projects on water mainly comprise coastal cities, and the amusement projects on water are continually touted by people, so that the amusement facilities on water are continually updated and iterated. Most of the existing water entertainment facilities depend on water projects irrelevant to swimming to obtain the pleasure of tourists, and the main purpose of people going to seaside or river and lake is to reduce summer heat, but the existing water entertainment facilities can be soaked in water, and swimming projects for watching normally invisible underwater landscapes are not changed greatly. The underwater swimming consumes a great deal of physical strength, which causes the problem that tourists cannot feel the best because of the exhaustion of force or the large swimming action. When people play on the water, most people who cannot swim use the swim ring to play on the water, and the swimming ring cannot be mastered to advance and retreat well, so that a lot of physical power is wasted in the sliding process of the water surface. With the progress of electric power technology, the energy density and performance of the battery are continuously improved, and the technology of the motor is perfect, so that the underwater propeller has feasibility, people can go forward and backward on water by virtue of any offshore entertainment equipment, and the diversity of offshore/underwater entertainment is increased. The existing propeller is usually a common propeller, has certain potential safety hazard in the use process, has low transmission efficiency and high noise, and is limited in use scene. Disclosure of Invention The utility model aims to solve the technical problem of providing an underwater propulsion motor sealing structure which has the advantages of strong driving force, safe use, high sealing performance and low noise. The utility model provides a sealing structure of an underwater propulsion motor, which comprises: The shell 1 is used as an installation carrier, the shell 1 is in a cylinder shape with two open ends, an installation seat is arranged on the side wall of the upper end of the shell 1, and an installation hole 121 and a wire hole 10 are formed in the installation seat; The rotor paddle 4 comprises a cylinder 41 which is coaxial with the shell 1 and is open at two ends, the cylinder 41 is rotatably arranged in the shell 1 through a bearing 5, and a plurality of paddles 42 are uniformly distributed on the inner wall of the cylinder 41 in the circumferential direction; the driving assembly comprises a coil winding 21 arranged on the inner wall of the shell 1 and a permanent magnet 22 arranged on the outer wall of the cylinder 41 and positioned on the same radial surface with the coil winding 21, wherein a wire on the coil winding 21 passes through the wire hole 10 and then extends out of the shell 1, and a sealing plug 13 or filling sealant is arranged in the wire hole 10; the two sealing covers 3 are fixed at two ends of the shell 1 through bolts, and sealing rings and/or sealing gaskets are arranged between the sealing covers 3 and the shell 1; An oil seal 63 provided on the seal cover 3, a seal lip of the oil seal 63 being in contact with an outer wall of the cylinder 41 and effecting sealing; a sealing chamber is formed among the shell 1, the rotor blade 4 and the sealing cover 3. Compared with the traditional propeller, the underwater propulsion motor disclosed by the application has the advantages that the motor rotor and the propeller are integrated by eliminating the traditional mechanical transmission shaft system, so that the overall performance of an underwater propulsion system is obviously improved in various aspects such as the advantage coverage efficiency, stealth, safety, reliability and the like. The traditional propeller adopts a bearing, a gear box and a long shaft for transmission, the mechanical loss reaches 10% -15%, the electromagnetic field direct-driven blade is adopted in the application, the transmission efficiency is nearly 100%, the energy loss is greatly reduced, meanwhile, the abrasion of the traditional structure is avoided after the traditional transmission structure is omitted, the whole service life is prolonged, the reliability is good, the working noise can be greatly reduced after the traditional transmission structure is eliminated, and the use experience is good. Make the paddle rotate inside, realize hiding the paddle design, reduce outside risk,