Waste oil collecting device for main shaft of fan

Abstract

The utility model relates to the technical field of fan waste oil collection, in particular to a fan main shaft waste oil collection device which comprises a fan main shaft which is an assembly carrier of the device. The device further comprises oil collecting pipes and the like, the oil collecting pipes are communicated with a plurality of waste grease discharging small holes distributed in the circumferential direction of a bearing of the fan main shaft, the oil collecting pipes are communicated to the same annular oil collecting ring, and a circle of open sliding groove is formed in the outer wall of the oil collecting ring. A mounting plate is fixedly arranged under the machine body at the mounting position of the fan main shaft, and a supporting rod is fixedly arranged on the mounting plate. Through the design of the oil collecting pipe, the oil collecting ring and the flow guide pipeline, waste oil discharged by a plurality of bearings is uniformly collected to one position, the workload of frequent disassembly and cleaning of maintenance personnel is reduced, and the problem of pipeline blockage caused by overhigh viscosity of the waste oil is effectively avoided by utilizing negative pressure generated in the flow guide pipeline by the negative pressure oil pumping piece.

Description

Technical Field

[0001] This utility model relates to the field of waste oil collection technology for fans, and in particular to a waste oil collection device for fan main shaft. Background Technology

[0002] With the increasing global demand for renewable energy, wind power has rapidly developed as an important component of clean energy. However, wind turbines require regular lubrication oil changes during long-term operation to ensure the lubrication and cooling of their internal mechanical components, especially the main shaft. Currently, the industry practice is to install oil collection bottles on the waste grease drain holes around the bearings of the main shaft to collect old grease. Whenever new grease is injected, the old grease is squeezed into these collection bottles, after which workers need to manually clean each bottle.

[0003] However, this method has some significant problems. First, the bearings of each wind turbine main shaft are usually equipped with multiple waste grease discharge holes, which means that a corresponding number of oil collection bottles need to be installed and removed one by one. The entire cleaning process includes climbing the wind turbine tower, disassembling and resetting the oil collection bottles, and cleaning the grease, which is time-consuming. Frequent shutdowns for cleaning greatly affect the power generation efficiency. In addition, since the oil collection bottles have limited capacity, they must be replaced in time when they are full of old grease, which leads to a high maintenance frequency. This high frequency of manual maintenance not only consumes a lot of manpower, but also makes labor costs account for a considerable proportion of the total maintenance cost. Therefore, we propose a waste oil collection device for wind turbine main shaft to solve the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a waste oil collection device for the main shaft of a fan.

[0005] The technical solution is: a waste oil collection device for a fan main shaft, comprising a fan main shaft, which serves as the assembly carrier for this device; it also includes an oil collecting pipe, an oil collecting ring, a fixing ring, a guide pipe, a collection box, and a negative pressure oil extraction component. Multiple waste oil discharge holes circumferentially distributed on the bearings of the fan main shaft are connected to oil collecting pipes, and all the oil collecting pipes are connected to the same annular oil collecting ring. An open groove is formed on the outer wall of the oil collecting ring. An installation plate is fixedly installed directly below the fan main shaft mounting location. A support rod is fixedly mounted on the plate, and a fixing ring is fixedly installed on the support rod. The fixing ring is rotatably and sealingly embedded in the sliding groove on the outer wall of the oil collecting ring. The fixing ring does not affect the normal rotation of the fan main shaft and the oil collecting ring. An oil outlet is opened at the bottom of the fixing ring, and the oil outlet of the fixing ring is connected to a guide pipe downward. A collection box for collecting waste oil is installed on the mounting plate, and the guide pipe is connected to the collection box. A negative pressure oil suction device is installed on the guide pipe, and the negative pressure oil suction device is used to unclog the waste oil in the oil collecting ring and the oil collecting pipe under negative pressure.

[0006] Furthermore, the guide pipe is a vertical pipe with smaller diameters at both ends. The negative pressure oil extraction component is located on the upper part of the guide pipe wall. When the negative pressure oil extraction component extracts oil under negative pressure in the guide pipe, the waste oil in the collection box cannot flow back up through the guide pipe.

[0007] Furthermore, the negative pressure oil extraction component includes a piston tube, a one-way valve, and a driving component. The piston tube is connected to the upper middle section of the guide pipe through an opening. The piston tube is a pipe with openings at both ends. The end of the piston tube away from the guide pipe is internally connected to a one-way valve with a sliding seal. The one-way valve guides the flow from the guide pipe to the piston tube. The mounting plate is equipped with a driving component for driving the one-way valve to slide and extract pressure within the piston tube. The driving component drives the one-way valve to reciprocate within the piston tube. When the one-way valve pushes the guide pipe within the piston tube, it is in the open state. When the one-way valve is pulled back to its original position, it is in the closed state. The piston tube, in conjunction with the one-way valve, performs negative pressure oil extraction on the oil collection pipe and the oil collection ring.

[0008] Furthermore, the driving component includes an electric push rod and a support plate. The support plate is fixedly connected to the mounting plate, and the electric push rod is fixedly installed on the support plate. The push rod of the electric push rod is connected to a one-way valve. The one-way valve is automatically pushed and pulled in the piston tube by the push rod of the electric push rod, which can continuously generate negative pressure in the piston tube, thereby clearing the waste grease blocked in the oil collection pipe and oil collection ring through negative pressure.

[0009] Furthermore, each of the outer walls of the oil collecting pipe is equipped with a heating wire, which is used to appropriately heat the waste oil in the oil collecting pipe, reducing the risk of the waste oil solidifying and becoming difficult to clear if it gets stuck in the oil collecting pipe, so that the waste oil in the oil collecting pipe can flow smoothly into the oil collecting ring.

[0010] Furthermore, it also includes a first insulation layer and a second insulation layer. The heating wire of the oil collecting pipe is also surrounded by a first insulation layer, which is used to isolate the temperature transfer between the inside and outside of the oil collecting pipe. The outer wall of the oil collecting ring is also provided with a second insulation layer, which is used to insulate the oil collecting ring. Through the insulation effect of the first insulation layer and the second insulation layer on the oil collecting pipe and the oil collecting ring respectively, the solidification of the discharged waste oil is prevented from being accelerated by the low temperature environment, so that the waste oil can flow in liquid form in the oil collecting pipe and the oil collecting ring.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model uses the design of oil collection pipe, oil collection ring and flow guide pipe to collect the waste grease discharged from multiple bearings into one place, reducing the workload of maintenance personnel to frequently disassemble and clean. In addition, the negative pressure oil extraction component generates negative pressure in the flow guide pipe, which effectively avoids the problem of pipe blockage caused by excessive viscosity of waste oil.

[0013] 2. This utility model can drive a one-way valve to perform automatic reciprocating motion through an electric push rod, saving the workload of manually clearing pipes, realizing automatic extraction of waste oil, and improving work efficiency and ease of operation.

[0014] 3. The heating wire on the outer wall of the oil collecting pipe and the first insulation layer, as well as the second insulation layer outside the oil collecting ring, work together to reduce the risk of waste oil solidifying in a low-temperature environment and ensure that the waste oil can flow smoothly to the collection point. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This diagram shows the connection relationship between the main shaft of the blower, the oil collection pipe, the oil collection ring, and the fixing ring of this utility model.

[0017] Figure 3 This is a schematic diagram showing the relationship between the oil collecting pipe, oil collecting ring, fixing ring, and guide pipe of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the electric push rod and one-way valve of this utility model.

[0019] Reference numerals: 1_Fan main shaft, 2_Oil collection pipe, 3_Oil collection ring, 4_Fixing ring, 41_Mounting plate, 42_Support rod, 5_Guide pipe, 6_Collection box, 7_Heating wire, 8_Insulation layer one, 9_Insulation layer two, 10_Piston tube, 11_Electric push rod, 12_One-way valve, 13_Support plate. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0021] A waste oil collection device for the main shaft of a wind turbine, such as Figures 1-4As shown, the device includes a fan main shaft 1, which serves as the assembly carrier for the device; it also includes an oil collecting pipe 2, an oil collecting ring 3, a fixing ring 4, a guide pipe 5, a collection box 6, and a negative pressure oil extraction component. Multiple waste grease discharge holes distributed circumferentially around the bearings of the fan main shaft 1 are connected to oil collecting pipes 2, and all oil collecting pipes 2 are connected to the same annular oil collecting ring 3. The outer wall of the oil collecting ring 3 has a circular groove. A mounting plate 41 is fixedly installed directly below the machine body at the mounting location of the fan main shaft 1. A support rod 42 is fixedly mounted on the mounting plate 41, and a fixing ring 4 is fixedly installed on the support rod 42. The fixing ring 4 rotates and is sealed within the groove on the outer wall of the oil collecting ring 3. The fixing ring 4 does not affect the normal rotation of the fan main shaft 1 and the oil collecting ring 3. The fixed ring 4 has an oil outlet at its bottom, which is connected to a guide pipe 5. A collection box 6 for collecting waste oil is installed on the mounting plate 41. The guide pipe 5 is connected to the collection box 6. A negative pressure oil suction device is installed on the guide pipe 5. The negative pressure oil suction device is used to unclog the waste oil in the oil collecting ring 3 and the oil collecting pipe 2 under negative pressure, preventing the discharged waste oil from clogging the pipe due to excessive viscosity. The old grease is squeezed out from the bearing cavity through the waste oil discharge hole by the newly added grease, and flows through the oil collecting pipes 2 to the oil collecting ring 3. Finally, it flows through the guide pipe 5 and into the collection box 6 for centralized collection, saving maintenance personnel the workload of frequently disassembling and resetting the oil collecting bottle and cleaning the grease.

[0022] like Figure 2 and Figure 3 As shown, the guide pipe 5 is a vertical pipe with smaller diameters at both ends. The negative pressure oil extraction component is located on the upper part of the guide pipe 5. When the negative pressure oil extraction component extracts oil under negative pressure in the guide pipe 5, the waste oil in the collection box 6 cannot flow back up through the guide pipe 5.

[0023] like Figure 1 , Figure 2 and Figure 4 As shown, the negative pressure oil extraction component includes a piston tube 10, a one-way valve 12, and a driving component. The piston tube 10 is connected to the upper part of the middle section of the guide pipe 5 through an opening. The piston tube 10 is a pipe with openings at both ends. The one-way valve 12 is slidably sealed inside the end of the piston tube 10 away from the guide pipe 5. The one-way valve 12 is open in the direction from the guide pipe 5 to the piston tube 10. The mounting plate 41 is equipped with a driving component for driving the one-way valve 12 to slide and pump pressure inside the piston tube 10. The driving component drives the one-way valve 12 to reciprocate inside the piston tube 10. When the one-way valve 12 pushes the guide pipe 5 inside the piston tube 10, the one-way valve 12 is in the open state. When the one-way valve 12 is pulled back to its original position, the one-way valve 12 is in the closed state. The piston tube 10, in conjunction with the one-way valve 12, performs negative pressure oil extraction on the oil collection pipe 2 and the oil collection ring 3.

[0024] like Figure 1As shown, the driving component includes an electric push rod 11 and a support plate 13. The support plate 13 is fixedly connected to the mounting plate 41, and the electric push rod 11 is fixedly installed on the support plate 13. The push rod of the electric push rod 11 is connected to the one-way valve 12. The one-way valve 12 is automatically pushed and pulled in the piston tube 10 by the push rod of the electric push rod 11, which can continuously generate negative pressure in the piston tube 10, thereby clearing the waste grease blocked in the oil collection pipe 2 and the oil collection ring 3 through negative pressure.

[0025] like Figure 1 and Figure 2 As shown, each of the outer walls of the oil collecting pipe 2 is equipped with a heating wire 7. The heating wire 7 is used to appropriately heat the waste oil in the oil collecting pipe 2, reducing the risk of the waste oil solidifying and becoming difficult to clear if it gets stuck in the oil collecting pipe 2. This allows the waste oil in the oil collecting pipe 2 to flow smoothly into the oil collecting ring 3. It also includes a heat insulation layer 1 8 and a heat insulation layer 2 9. The heating wire 7 of the oil collecting pipe 2 is surrounded by a heat insulation layer 1 8, which is used to isolate the temperature transfer between the inside and outside of the oil collecting pipe 2. The outer wall of the oil collecting ring 3 is also equipped with a heat insulation layer 2 9, which is used to insulate the oil collecting ring 3. Through the heat insulation effect of the heat insulation layer 1 and the heat insulation layer 2 9, the solidification of the discharged waste oil is prevented from being accelerated by the low temperature environment, so that the waste oil can flow in liquid form in the oil collecting pipe 2 and the oil collecting ring 3.

[0026] As the old grease in the bearing of the main shaft 1 of the blower is gradually squeezed out by the newly injected grease, the waste grease enters each oil collection pipe 2 through the waste oil discharge holes distributed around the bearing. The oil collection pipe 2 is heated by the heating wire 7 and maintained at the temperature by the insulation layer 8, so that the viscous waste oil remains fluid and flows smoothly into the annular oil collection ring 3. The oil collection ring 3 rotates with the main shaft, and its outer wall groove forms a dynamic sealing connection with the fixed ring 4, ensuring that the waste oil can continuously flow into the vertical guide pipe 5 through the oil outlet at the bottom of the fixed ring 4 during rotation. The negative pressure oil extraction component in the middle of the guide pipe 5 drives the one-way valve 12 to reciprocate in the piston tube 10 through the electric push rod 11. When the push rod pushes the one-way valve 12 to move in the guide pipe 5, the valve port of the one-way valve 12 opens, allowing the gas in the oil collection ring 3 and the oil collection pipe 2 to enter the piston tube 10; when the push rod is pulled back, the one-way valve 12 closes, and the piston tube 10... The negative pressure generated accelerates the extraction of waste oil from the oil collecting ring 3 and the oil collecting pipe 2 into the pipeline. The small diameter design of the upper and lower sections of the guide pipe 5 prevents the backflow of waste oil. Combined with the negative pressure, the efficiency of oil flow is further enhanced. Finally, the waste oil flows into the collection box 6 for centralized storage under the action of negative pressure and gravity. The insulation layer 9 on the outer layer of the oil collecting ring 3 can reduce the impact of ambient temperature on the fluidity of oil. This process realizes the automatic collection of waste oil and avoids frequent manual cleaning. At the same time, the dual anti-clogging mechanism of heating and negative pressure ensures the long-term stable operation of the system.

[0027] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation in order to cover all variations and equivalent structures and functions.

Claims

1. A waste oil collection device for a fan main shaft, comprising a fan main shaft (1); Its features are, It also includes an oil collecting pipe (2), an oil collecting ring (3), a fixing ring (4), a guide pipe (5), a collection box (6), and a negative pressure oil extraction component. The multiple waste grease discharge holes distributed circumferentially on the bearing of the blower main shaft (1) are all connected to the oil collecting pipe (2). The multiple oil collecting pipes (2) are all connected to the same annular oil collecting ring (3). The outer wall of the oil collecting ring (3) has a circular groove. A mounting plate (41) is fixedly installed directly below the body of the blower main shaft (1). A support rod (42) is fixedly installed on the mounting plate (41). A fixing ring (4) is fixedly installed on the support rod (42). The fixing ring (4) is rotatably sealed and embedded in the outer wall groove of the oil collecting ring (3). An oil outlet is opened at the bottom of the fixing ring (4). The oil outlet of the fixing ring (4) is connected downward to a guide pipe (5). A collection box (6) is installed on the mounting plate (41). The guide pipe (5) is connected to the collection box (6). A negative pressure oil extraction component is provided on the guide pipe (5). The negative pressure oil extraction component is used to unclog the waste oil in the oil collecting ring (3) and the oil collecting pipe (2) under negative pressure.

2. The waste oil collection device for the main shaft of a fan according to claim 1, characterized in that, The guide pipe (5) is a vertical pipe with smaller diameters at both ends. The negative pressure oil extraction component is located on the upper part of the guide pipe (5).

3. The waste oil collection device for the main shaft of a fan according to claim 2, characterized in that, The negative pressure oil extraction component includes a piston tube (10), a one-way valve (12), and a driving component. The piston tube (10) is connected to the upper part of the middle section of the guide pipe (5) through an opening. The piston tube (10) is a pipe with openings at both ends. The one-way valve (12) is slidably sealed at the end of the piston tube (10) away from the guide pipe (5). The one-way valve (12) is open from the guide pipe (5) to the piston tube (10). The mounting plate (41) is provided with a driving component for driving the one-way valve (12) to slide and pump pressure inside the piston tube (10).

4. The waste oil collection device for the main shaft of a fan according to claim 3, characterized in that, The driving component includes an electric push rod (11) and a support plate (13). The support plate (13) is fixedly connected to the mounting plate (41). The electric push rod (11) is fixedly installed on the support plate (13). The push rod of the electric push rod (11) is connected to a one-way valve (12).

5. The waste oil collection device for the main shaft of a fan according to claim 4, characterized in that, Each of the oil collecting pipes (2) is provided with an electric heating wire (7) on its outer wall. The electric heating wire (7) is used to heat the waste oil in the oil collecting pipe (2) appropriately.

6. The waste oil collection device for the main shaft of a fan according to claim 5, characterized in that, It also includes a first insulation layer (8) and a second insulation layer (9). The heating wire (7) of the oil collecting pipe (2) is also provided with a first insulation layer (8), and the outer wall of the oil collecting ring (3) is also provided with a second insulation layer (9).

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