Maintainable marine open-type axial flow fan

Abstract

The utility model provides a maintainable marine open-type axial flow fan which comprises a machine shell, a motor is arranged in the machine shell, a driving shaft of the motor is connected with an impeller shaft through a bearing assembly, an impeller is arranged on the impeller shaft, and multiple sets of blades evenly distributed in the circumferential direction of the impeller are arranged on the impeller. The center lines of every two adjacent sets of blades continuously extend towards the circle center of the impeller and intersect to form an included angle of 45 degrees. An oil inlet and an oil outlet of the motor are communicated with oil pipes respectively, and the oil pipe far away from the oil port extends out of the machine shell and is communicated with an oil nozzle assembly. The open-type axial flow fan motor is simple in overall structure, the oil nozzle is convenient to maintain and replace, meanwhile, the fault probability of the open-type axial flow fan motor can be reduced, and the service life of equipment is prolonged. Due to the fact that the oil nozzle is independently arranged, if the oil nozzle is blocked or damaged, only the oil nozzle needs to be detached, and the damaged oil nozzle is replaced.

Description

Technical Field

[0001] This utility model belongs to the field of marine fan technology, and specifically relates to a maintainable marine open-type axial flow fan. Background Technology

[0002] With the increasing demand for ventilation in industrial production and various venues, axial flow fans are widely used as an important ventilation device. Marine open-type axial flow fans are ventilation devices specifically designed for ships, mainly used for air circulation and ventilation inside the vessel.

[0003] Existing marine open-type axial flow fans typically operate in harsh environments, such as high temperatures, high corrosion, and high dust levels. This can lead to blockages in the motor's lubrication ports, resulting in damage to the oil circuit system. Since the existing oil circuit system is located inside the open-type axial flow fan, it is difficult to replace when damaged, leading to high maintenance costs and time-consuming processes.

[0004] Therefore, how to solve the defects in the above-mentioned technical solutions has become one of the urgent problems to be solved in the field of marine wind turbine technology. Utility Model Content

[0005] In view of the problems existing in the background art, the present invention provides a maintainable marine open-type axial flow fan, including a casing, and a motor is installed inside the casing. The drive shaft of the motor is connected to an impeller shaft through a bearing assembly. An impeller is installed on the impeller shaft, and multiple sets of blades are evenly distributed around its circumference on the impeller. The center lines of two adjacent sets of blades extend continuously toward the center of the impeller and intersect to form an angle of 45°. The oil inlet and oil outlet of the motor are respectively connected to oil pipes, and the oil pipes away from the oil inlets extend out of the casing and are connected to an oil nozzle assembly. The oil nozzle assembly includes an oil nozzle located outside the casing.

[0006] Optionally, the motor wiring port is connected to a cable, and a motor outlet pipe is provided on the outside of the cable. The motor outlet pipe is detachably connected to the motor housing. The cable located in the motor outlet pipe passes through the housing and is electrically connected to the junction box.

[0007] Optionally, the nozzle assembly further includes an oil seat. The nozzle is fixedly connected to the outer wall of the housing. The oil seat has a positioning hole for the nozzle to extend into, and the nozzle is installed on the nozzle by a locking nut. The other end of the nozzle extends into the housing and is connected to the oil pipe.

[0008] Optionally, the nozzle is provided with an integrated sleeve, and a screen is provided in the sleeve near the oil inlet of the nozzle. The outer wall of the screen is provided with an outwardly protruding sealing ring, and multiple sets of sealing rings are evenly distributed along the longitudinal direction of the screen. The outwardly protruding sealing rings are engaged in the groove of the sleeve for sealing connection, so that the screen and the sleeve can be detachably connected.

[0009] Optionally, the screen may be a precision screen.

[0010] Optionally, the sleeve is provided with a valve body, and the valve body is provided with a needle valve. A locking clip is provided on the valve body away from the oil outlet of the needle valve. The inner wall of the sleeve is provided with a groove for the locking clip to extend into and lock into the groove. The outer wall of the locking clip is provided with a non-penetrating threaded hole, and a fastening bolt is connected to the threaded hole.

[0011] In summary, the beneficial effects of this utility model are:

[0012] This utility model has a simple overall structure, making it easy to maintain and replace the oil nozzles. It also reduces the probability of motor failure in open-type axial flow fans, extending the service life of the equipment. Because the oil nozzles are independently installed, if a nozzle becomes clogged or damaged, it can simply be removed and replaced. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a maintainable marine open-type axial flow fan according to the present invention;

[0014] Figure 2 This is a schematic diagram of another orientation of an embodiment of a maintainable marine open-type axial flow fan according to the present invention.

[0015] Figure 3 This utility model Figure 1 Enlarged view of the structure at position A in the middle;

[0016] Figure 4 This is an exploded view of the nozzle assembly of an embodiment of a maintainable marine open-type axial flow fan according to this utility model.

[0017] Figure label:

[0018] 100. Open-type axial flow fan; 10. Casing; 201. Impeller shaft; 202. Impeller; 203. Blade; 30. Junction box; 40. Motor outlet pipe; 50. Oil pipe; 60. Oil nozzle assembly; 601. Oil nozzle; 602. Locking nut; 603. Oil seat; 605. Sleeve; 6051. Coil; 6052. Screen; 607. Needle valve; 608. Locking clip; 6081. Fastening bolt; 70. Motor. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Although exemplary embodiments are disclosed in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to facilitate a more thorough understanding of the present utility model and to fully convey the concept of the present utility model to those skilled in the art.

[0020] In the description of this specification, the references to terms such as "certain embodiments," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0021] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Example 1

[0023] like Figure 1-4 As shown, this embodiment provides a maintainable marine open-type axial flow fan 100, including a housing 10, and a motor 70 is installed inside the housing 10. The drive shaft of the motor 70 is connected to an impeller shaft 201 through a bearing assembly. An impeller 202 is installed on the impeller shaft 201, and multiple sets of blades 203 are evenly distributed around its circumference on the impeller 202. The center lines of two adjacent sets of blades 203 extend towards the center of the impeller 202 and intersect to form an angle of 45°.

[0024] The motor 70 has a wiring port connected to a cable, and a motor outlet pipe 40 is provided on the outside of the cable. The motor outlet pipe 40 is detachably connected to the outer casing of the motor 70. The cable located in the motor outlet pipe 40 passes through the casing 10 and is electrically connected to the junction box 30.

[0025] Existing marine open-type axial flow fans typically operate in harsh environments, such as high temperature, high corrosion, and high dust levels. This can lead to blockage of the motor's lubrication ports, resulting in damage to the oil circuit system. Since the existing oil circuit system is located inside the open-type axial flow fan, it is difficult to replace when damaged, leading to high maintenance costs and time consumption. To address these technical shortcomings, please refer to [link to relevant documentation]. Figure 1-4 As shown, the oil inlet and oil outlet of the motor 70 are respectively connected to the oil pipe 50, and the oil pipe 50, which is away from the oil port (oil inlet or oil outlet), extends out of the housing 10 and is connected to the oil nozzle assembly 60. The oil nozzle assembly 60 includes an oil nozzle 601, which is located outside the housing 10.

[0026] This utility model has a simple overall structure, making it easy to maintain and replace the oil nozzle. It can also reduce the probability of motor failure in open-type axial flow fans and extend the service life of the equipment.

[0027] Furthermore, the nozzle assembly 60 also includes an oil seat 603. The nozzle 603 is fixedly connected to the outer wall of the housing 10 by means of fastening screws or the like. The oil seat 603 has a positioning hole for the nozzle 601 to extend into, and the nozzle 601 is installed on the nozzle 603 by a locking nut 602. The other end of the nozzle 601 extends into the housing 10 and is connected to the oil pipe 50.

[0028] In this embodiment, if the nozzle becomes clogged or damaged, it is only necessary to remove the nozzle 601 and replace the damaged nozzle 601.

[0029] Example 2

[0030] In practical applications, marine open-type axial flow fans typically operate in harsh environments, such as high temperature, high corrosion, and high dust conditions. Therefore, grease fittings frequently fail. Replacing the entire grease fitting unit is costly. To address these technical issues, please refer to [link to relevant documentation]. Figure 4As shown, the oil nozzle 601 has an integrated sleeve 605 inside, and a screen 6052 is provided inside the sleeve 605 near the oil inlet of the oil nozzle 601. The outer wall of the screen 6052 is provided with an outwardly protruding sealing ring, and multiple sets of sealing rings are evenly distributed along the longitudinal direction of the screen 6052. The outwardly protruding sealing rings are engaged in the groove of the sleeve 605 to form a sealing connection. This allows the screen 6052 and the sleeve 605 to be detachably connected. The screen 6052 is an ultra-precision screen, which filters out coarser impurities in the lubricating oil.

[0031] Furthermore, a valve body is provided inside the sleeve 605, and a needle valve 607 is provided inside the valve body. A locking member 608 is provided on the valve body away from the oil outlet of the needle valve 607. The inner wall of the sleeve 605 is provided with a groove into which the locking member 608 extends and is locked and engaged. A non-penetrating threaded hole is provided on the outer wall of the locking member 608, and a fastening bolt 6081 is threadedly connected inside the threaded hole.

[0032] In this embodiment, when the needle valve is damaged, it is not necessary to disassemble the entire nozzle. Only the screen needs to be removed with a tool, and then the fastening bolt 6081 needs to be loosened. During installation, the fastening bolt 6081 passes through the threaded holes of the nozzle assembly 601 and the sleeve in sequence, and extends into the threaded hole of the locking clip 608 to form a threaded connection. Therefore, during disassembly, only the fastening bolt 6081 needs to be loosened, and then the bolt needs to be removed to release the restriction between the sleeve and the locking clip. The valve body can then be removed with a tool, thereby allowing the needle valve inside the valve body to be replaced.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not restrictive. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model do not depart from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A maintainable open-type axial flow fan for marine use, characterized by, The utility model provides a kind of marine open type axial flow fan, including shell, and the shell is internally provided with motor, and the driving shaft of the motor is connected impeller shaft by bearing assembly, the impeller shaft is provided with impeller, and the impeller is provided with multiple groups of blades that are evenly distributed along its circumferential direction, the center line of adjacent two groups of blades continuously extends towards the center of impeller, and intersect to form an included angle, and the angle is 45 °;The oil inlet and oil outlet of the motor are communicated with oil pipe respectively, and the oil pipe away from oil port extends out of the shell, and is communicated with oil nozzle assembly, and the oil nozzle assembly includes oil nozzle, and the oil nozzle is located outside the shell.

2. The marine open type axial flow fan according to claim 1, wherein, The motor wiring port is communicated with cable, and the cable outside is provided with motor outlet tube, and the motor outlet tube is detachably connected with the motor shell, the cable in the motor outlet tube passes through the shell, and is electrically connected with terminal box.

3. The marine open type axial flow fan according to claim 1, wherein, The oil nozzle assembly further includes oil seat, the oil nozzle is installed on the outer wall of the shell by fixed connection, the oil seat is provided with positioning hole for the oil nozzle to extend into, and the oil nozzle is installed on the oil seat by lock nut, the other end of the oil nozzle extends into the shell and is communicated with the oil pipe.

4. The marine open type axial flow fan according to claim 3, wherein, The oil nozzle is internally provided with sleeve integrated with the oil nozzle, and the sleeve near the oil inlet of the oil nozzle is provided with screen, the outer wall of the screen is provided with outwardly protruding sealing ring, and the sealing ring is provided in multiple groups and evenly distributed along the longitudinal direction of the screen, and the outwardly protruding sealing ring is clamped into the groove of the sleeve for sealing connection, so that the screen and the sleeve are detachably connected.

5. The marine open type axial flow fan according to claim 4, wherein, The screen is a precision screen.

6. The marine open type axial flow fan according to claim 4, wherein, The sleeve is internally provided with valve body, and the valve body is provided with needle valve, the valve body away from the oil outlet of the needle valve is provided with locking clamping piece, and the inner wall of the sleeve is provided with groove for the locking clamping piece to extend into and lock clamping connection, the outer wall of the locking clamping piece is provided with non-through threaded hole, and the threaded hole is screwed with fastening bolt.

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