Low-noise high-speed diagonal flow fan for ship

Abstract

The utility model discloses a low-noise high-speed diagonal flow fan for a ship, and belongs to the field of diagonal flow fans. A low-noise high-speed diagonal flow fan for ships and warships comprises a first air duct and a second air duct. The first air duct is fixedly connected with the second air duct; the driving motor is mounted in the first air duct; the impeller part is mounted on the driving motor; the mounting ring is fixedly connected to the inner wall of the second air duct; the mounting groove is formed in the inner ring wall of the mounting ring; the sound-absorbing cotton is clamped in the mounting groove; the movable groove is formed in the mounting ring and is communicated with the mounting groove; the air bag is arranged in the movable groove; the air pump is movably mounted in the movable groove; the movable part is movably installed in the movable groove and used for driving the air bag to move. An air outlet of the air pump communicates with an air inlet of the air bag. The low-noise high-speed diagonal flow fan for the ship has the beneficial effects that the sound-absorbing cotton can be ejected out, and the sound-absorbing cotton is convenient to replace.

Description

Technical Field

[0001] This application relates to the field of mixed-flow fans, and more particularly, to a low-noise high-speed mixed-flow fan for ships. Background Art

[0002] A mixed-flow fan, also known as an obliquely mounted axial fan, is a type of fan that lies between an axial fan and a centrifugal fan. The impeller of a mixed-flow fan causes air to move both centrifugally and axially, and the air movement inside the casing combines both axial and centrifugal forms of movement. Currently, the mixed-flow fans used in ships are subject to long-term erosion by seawater or river water. The noise reduction effect of the sound-absorbing cotton that has been eroded deteriorates, and the sound-absorbing cotton needs to be replaced regularly. However, the sound-absorbing cotton is usually fixed or clamped inside the air duct, making it difficult to remove.

[0003] Now, a low-noise high-speed mixed-flow fan for ships is provided. Summary of the Utility Model

[0004] This section of the application is used to briefly introduce concepts that will be described in detail in the subsequent Detailed Description section. This section of the application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0005] To solve the technical problems mentioned in the above Background Art section, some embodiments of this application provide a low-noise high-speed mixed-flow fan for ships, including: a first air duct and a second air duct;

[0006] Characterized in that: the first air duct and the second air duct are fixedly connected;

[0007] The low-noise high-speed mixed-flow fan for ships further includes:

[0008] A driving motor, installed inside the first air duct;

[0009] An impeller member, installed on the driving motor;

[0010] An installation ring, fixedly connected to the inner wall of the second air duct;

[0011] An installation groove, provided on the inner circumferential wall of the installation ring;

[0012] Sound-absorbing cotton, snap-fitted into the installation groove;

[0013] An activity groove, provided inside the installation ring and communicating with the installation groove;

[0014] An airbag, provided inside the activity groove;

[0015] An air pump, movably installed inside the activity groove;

[0016] An activity member, movably installed inside the activity groove for driving the airbag to move;

[0017] Among them, the air outlet of the air pump is communicated with the air inlet of the airbag.

[0018] Furthermore, the impeller part includes:

[0019] A hub fixedly connected to the output rotating shaft of the driving motor;

[0020] Axial-flow blades, multiple of which are provided and fixedly connected to the hub at equal intervals;

[0021] An orifice plate installed on the driving motor;

[0022] An inner guide ring sleeved on the orifice plate;

[0023] Guide vanes, multiple of which are provided and fixedly connected to the outer wall of the inner guide ring at equal intervals;

[0024] An outer guide ring fixedly connected to the guide vanes.

[0025] Furthermore, a plurality of through holes are provided on the orifice plate at equal intervals, and the orifice plate is sleeved on the outer shell of the driving motor and fixedly connected to the outer shell of the driving motor.

[0026] Furthermore, there are two second air ducts, and the second air ducts are fixedly connected to both ends of the first air duct symmetrically, and the second air duct is a conical cylinder.

[0027] Furthermore, the outer wall of the outer guide ring is fixedly connected to the inner wall of the first air duct, and one end of the guide vane is fixedly connected to the inner wall of the outer guide ring.

[0028] Furthermore, the low-noise high-speed axial-flow fan for ships further includes:

[0029] Two isolation grilles, which are symmetrically installed on the two second air ducts.

[0030] Furthermore, the isolation grille is fixedly connected to the end wall of the second air duct through bolts and nuts, and the first air duct and the second air duct are fixedly connected through bolts and nuts.

[0031] Furthermore, the movable part includes:

[0032] A slider slidably connected in the movable groove;

[0033] A threaded rod rotatably connected to the wall of the movable groove;

[0034] A bottom plate fixedly connected to the side wall of the slider;

[0035] A convex block fixedly connected to the top wall of the bottom plate;

[0036] Among them, the threaded rod passes through the slider and is threadedly connected to the slider. The side wall of the slider is in sliding contact with the wall of the movable groove, and the air pump is fixedly connected inside the slider.

[0037] Further, the side wall of the slider is in sliding contact with the wall of the movable groove. There are multiple bumps, and the heights of the bumps are different.

[0038] Further, the airbag is mounted on multiple bumps, and a part of the outer wall of the airbag is fixedly connected to the air outlet port of the air pump.

[0039] The beneficial effect of this application is that it provides a low-noise high-speed diagonal flow fan for ships, which can eject the sound-absorbing cotton, facilitating the replacement of the sound-absorbing cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings that form a part of this application are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more obvious. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application.

[0041] In addition, throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic, and the elements and components are not necessarily drawn to scale.

[0042] In the drawings:

[0043] Figure 1 is the overall schematic diagram according to the embodiment of this application;

[0044] Figure 2 is the structural cross-sectional schematic diagram of a part of the embodiment, mainly showing the structure of the outer guide ring;

[0045] Figure 3 is the structural cross-sectional schematic diagram of a part of the embodiment, mainly showing the structure of the orifice plate;

[0046] Figure 4 is the structural cross-sectional schematic diagram of a part of the embodiment, mainly showing the structure of the mounting ring;

[0047] Figure 5 is Figure 4 the enlarged schematic diagram of part A in

[0048] Figure 6 is the structural cross-sectional schematic diagram of a part of the embodiment, mainly showing the structure of the bump.

[0049] Reference numerals:

[0050] 11. First air duct; 12. Second air duct; 13. Isolation mesh cover; 14. Mounting ring; 15. Outer flow guide ring; 16. Inner flow guide ring; 17. Flow guide vane; 18. Orifice plate; 19. Driving motor; 20. Hub; 21. Oblique flow vane; 22. Mounting groove; 23. Sound-absorbing cotton; 24. Movable groove; 25. Threaded rod; 26. Slide block; 27. Air pump; 28. Airbag; 29. Base plate; 30. Bump. Detailed implementation mode

[0051] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0052] In addition, it should be noted that, for the sake of convenience of description, only the parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0053] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or mutual dependence relationship of the functions performed by these devices, modules or units.

[0054] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that, unless clearly stated otherwise in the context, it should be understood as "one or more".

[0055] The present disclosure will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0056] Refer to Figures 1 - 6 , a low-noise high-speed axial-flow fan for ships, comprising: a first air duct 11, a second air duct 12, a driving motor 19, a mounting ring 14, a sound-absorbing cotton 23, an airbag 28, an air pump 27, and an isolation mesh cover 13.

[0057] There are two second air ducts 12, and the second air ducts 12 are symmetrically installed at both ends of the first air duct 11. The second air duct 12 is a conical cylinder, and the first air duct 11 and the second air duct 12 are fixedly connected by bolts and nuts. There are two isolation mesh covers 13, which are symmetrically installed on the two second air ducts 12, and the isolation mesh cover 13 is fixedly connected to the end wall of the second air duct 12 by bolts and nuts.

[0058] The mounting ring 14 is fixedly connected to the inner wall of the second air duct 12. An installation groove 22 is provided on the inner ring wall of the mounting ring 14, and the sound-absorbing cotton 23 is snap-fitted into the installation groove 22. An activity groove 24 is provided in the mounting ring 14 and the activity groove 24 communicates with the installation groove 22.

[0059] In order to achieve the diagonal flow operation of the fan, an impeller member is also provided. The impeller member includes: a hub 20, diagonal flow blades 21, an orifice plate 18, an inner guide ring 16, guide vanes 17, and an outer guide ring 15.

[0060] The outer wall of the outer guide ring 15 is fixedly connected to the inner wall of the first air duct 11. One end of the guide vane 17 is fixedly connected to the inner wall of the outer guide ring 15. The inner guide ring 16 is fixedly connected to the other end of the guide vane 17. A plurality of guide vanes 17 are provided and are fixedly connected to the outer wall of the inner guide ring 16 at equal intervals. A plurality of through holes are provided on the orifice plate 18 at equal intervals. The orifice plate 18 is sleeved on the outer shell of the driving motor 19 and is fixedly connected to the outer shell of the driving motor 19. The hub 20 is fixedly connected to the output rotating shaft of the driving motor 19. A plurality of diagonal flow blades 21 are provided and are fixedly connected to the hub 20 at equal intervals.

[0061] In order to drive the airbag 28 to move, an activity member is also provided. The activity member includes: a slider 26, a threaded rod 25, a bottom plate 29, and a convex block 30.

[0062] The slider 26 is slidably connected to the activity groove 24. The threaded rod 25 is rotatably connected to the groove wall of the activity groove 24. The bottom plate 29 is fixedly connected to the side wall of the slider 26. The convex block 30 is fixedly connected to the top wall of the bottom plate 29. The threaded rod 25 passes through the slider 26 and is threadedly connected to the slider 26. The side wall of the slider 26 is in sliding contact with the groove wall of the activity groove 24. The air pump 27 is fixedly connected to the slider 26. The side wall of the slider 26 is in sliding contact with the groove wall of the activity groove 24. A plurality of convex blocks 30 are provided and the heights of the convex blocks 30 are different. The airbag 28 is mounted on the plurality of convex blocks 30. The air outlet of the air pump 27 is communicated with the air inlet of the airbag 28. A part of the outer wall of the airbag 28 is fixedly connected to the air outlet port of the air pump 27.

[0063] The diagonal flow blades 21 are noise-reducing fan blades. Through the second air ducts 12 at both ends of the first air duct 11, the inner wall of the second air duct 12 is conical and the bending of the diagonal flow blades 21, the output rotating shaft of the driving motor 19 drives the hub 20 to rotate. After the hub 20 drives the plurality of diagonal flow blades 21 to rotate, the generated air flow makes both centrifugal motion and axial motion, and the fan is subjected to noise reduction treatment through the sound-absorbing cotton 23 provided on both sides.

[0064] Working or installation process:

[0065] After a long - term operation, some seawater enters the interiors of the first air duct 11 and the second air duct 12. Since seawater is corrosive, some of the seawater that enters the first air duct 11 and the second air duct 12 will corrode the sound - absorbing cotton 23. After the sound - absorbing cotton 23 is corroded by seawater for a long time, the noise - reduction effect of the sound - absorbing cotton 23 will be reduced. At this time, it is necessary to replace the sound - absorbing cotton 23. Remove the bolts and nuts used to connect the second air duct 12 and the isolation mesh cover 13, and remove the isolation mesh cover 13 from the second air duct 12. Rotate the threaded rod 25. The threaded rod 25 rotates and is threadedly connected to the slider 26. The slider 26 moves along the extending direction of the groove wall of the movable groove 24. The slider 26 drives the airbag 28 and the bottom plate 29 to move synchronously until the airbag 28 moves below the sound - absorbing cotton 23. At this time, the air pump 27 is started. The air outlet of the air pump 27 injects gas into the airbag 28 and causes the airbag 28 to expand. Since the airbag 28 is supported on a plurality of bumps 30 and the heights of the bumps 30 are different, the airbag 28 bulges unevenly upward. And during the expansion process of the airbag 28, continuously rotate the threaded rod 25, so that the airbag 28 continuously pushes different areas of a part of the sound - absorbing cotton 23 upward during the horizontal movement; the airbag 28 bulges upward and pushes a part of the sound - absorbing cotton 23. After the sound - absorbing cotton 23 is pushed by the airbag 28, it is pushed out of the installation groove 22 by the airbag 28. The maintenance personnel directly pinch a part of the sound - absorbing cotton 23 that protrudes upward and directly pull the entire sound - absorbing cotton 23 out of the installation groove 22;

[0066] After the entire sound - absorbing cotton 23 is pulled out of the installation groove 22, the air pump 27 starts in the reverse direction and pumps out the gas in the airbag 28, causing the airbag 28 to deflate. The airbag 28 contracts and completely contracts into the movable groove 24. Then, a new sound - absorbing cotton 23 is stuffed into the installation groove 22 to complete the replacement of the sound - absorbing cotton 23;

[0067] After that, place the isolation mesh cover 13 on the end wall of the second air duct 12 and fix the isolation mesh cover 13 to the second air duct 12 again through bolts and nuts.

[0068] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above - mentioned technical features. At the same time, it should also cover other technical solutions formed by any combination of the above - mentioned technical features or their equivalent features without departing from the above - mentioned inventive concept. For example, technical solutions formed by mutually replacing the above - mentioned features with technical features having similar functions (but not limited to) disclosed in the embodiments of the present disclosure.

Claims

1. A low-noise, high-speed diagonal flow fan for ships, comprising: A first air cylinder (11) and a second air cylinder (12); The invention is characterized in that: the first air duct (11) and the second air duct (12) are fixedly connected; The low-noise high-speed oblique flow fan for ships also includes: A driving motor (19) installed in the first air cylinder (11); An impeller component mounted on the driving motor (19); A mounting ring (14) fixedly connected to the inner wall of the second air cylinder (12); A mounting groove (22) is provided on the inner ring wall of the mounting ring (14); The sound-absorbing cotton (23) is clamped in the installation groove (22); A movable groove (24) is provided in the mounting ring (14) and communicated with the mounting groove (22); An air bag (28) is arranged in the movable groove (24); An air pump (27) movably mounted in the movable groove (24); A movable member, movably mounted in the movable groove (24), and used to drive the airbag (28) to move; Wherein, the air outlet of the air pump (27) is communicated with the air inlet of the air bag (28).

2. The low-noise, high-speed diagonal flow fan for ships according to claim 1, characterized in that: The impeller member comprises: A wheel hub (20) fixedly connected to the output shaft of the driving motor (19); A plurality of oblique flow blades (21) are provided and fixedly connected to the hub (20) at equal intervals; An orifice plate (18) mounted on the driving motor (19); An inner guide ring (16) sleeved on the orifice plate (18); A plurality of guide blades (17) are provided and fixedly connected to the outer wall of the inner guide ring (16) at equal intervals; The outer guide ring (15) is fixedly connected to the guide blade (17).

3. The low-noise, high-speed diagonal flow fan for ships according to claim 2, characterized in that: The orifice plate (18) is provided with a plurality of through holes at equal intervals. The orifice plate (18) is sleeved on the outer shell of the drive motor (19) and is fixedly connected to the outer shell of the drive motor (19).

4. The low-noise, high-speed oblique flow fan for ships according to claim 1, characterized in that: Two second air cylinders (12) are provided, and the second air cylinders (12) are symmetrically fixedly connected to the two ends of the first air cylinder (11), and the second air cylinder (12) is a conical cylinder.

5. The low-noise, high-speed oblique flow fan for ships according to claim 2, characterized in that: The outer wall of the outer guide ring (15) is fixedly connected to the inner wall of the first wind tube (11), and one end of the guide blade (17) is fixedly connected to the inner wall of the outer guide ring (15).

6. The low-noise, high-speed diagonal flow fan for ships according to claim 4, characterized in that: The low-noise high-speed oblique flow fan for ships also includes: Two isolation mesh covers (13) are provided and are symmetrically installed on the two second air cylinders (12).

7. The low-noise, high-speed oblique flow fan for ships according to claim 6, characterized in that: The isolation mesh cover (13) is fixedly connected to the end wall of the second air duct (12) via bolts and nuts, and the first air duct (11) and the second air duct (12) are fixedly connected via bolts and nuts.

8. The low-noise, high-speed oblique flow fan for ships according to claim 1, characterized in that: The movable parts include: A slider (26) slidably connected in the movable groove (24); A threaded rod (25) rotatably connected to the groove wall of the movable groove (24); A bottom plate (29) fixedly connected to the side wall of the slider (26); A convex block (30) fixedly connected to the top wall of the bottom plate (29); The threaded rod (25) passes through the slider (26) and is threadedly connected to the slider (26); the side wall of the slider (26) is in sliding contact with the groove wall of the movable groove (24); and the air pump (27) is fixedly connected to the slider (26).

9. The low-noise, high-speed diagonal flow fan for ships according to claim 8, characterized in that: The side wall of the sliding block (26) is in sliding contact with the groove wall of the movable groove (24); a plurality of protrusions (30) are provided, and the heights of the protrusions (30) are different.

10. The low-noise, high-speed oblique flow fan for ships according to claim 9, characterized in that: The air bag (28) is mounted on the plurality of protrusions (30), and a portion of the outer wall of the air bag (28) is fixedly connected to the air outlet port of the air pump (27).

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