A dust-proof device for fan cabin

Abstract

The present invention relates to the field of cabin dust removal technology, and is a fan cabin dust prevention device, comprising a frame; an active roller and a passive roller installed on both sides of the frame symmetrically connected to the frame through a rotating connector; two clamping wheels and a filter screen installed on the inner side of the frame and arranged in parallel with the active roller and the passive roller; the rotating connector is placed in a slot at both ends of the active roller or the passive roller through an adjustment shaft with a retaining column at one end, the adjustment shaft includes a retaining ring arranged on one side of the retaining column, the adjustment shaft passes through a bearing seat bearing channel fixed on the frame, and a cavity is formed through the retaining ring and a cap on the other side of the bearing channel, and a compression spring is sleeved on the adjustment shaft in the cavity. The present invention replaces the filter screen by rotating the active roller and the passive roller, and the active roller and the passive roller can be manually rotated by the rotating connector for manual adjustment, and the active roller and the passive roller can be conveniently disassembled and replaced by connecting the rotating connector with the active roller and the passive roller.

Description

Technical Field

[0001] The present invention relates to the technical field of cabin dust removal, and specifically to a fan cabin dust prevention device. Background Art

[0002] Wind turbine cabin pollution and gearbox oil temperature failure are currently cooled by manual dust removal and cleaning of the gearbox heat exchanger. This has greatly increased the workload of the operation and maintenance personnel. At the same time, due to factors such as maintenance effectiveness and delayed fault judgment, the number of unavailable hours of wind turbines has increased, causing economic losses to the wind farm.

[0003] At present, there are a huge number of wind turbines in operation in China. Cabin pollution and overheating of gearboxes are common, especially in the three northeastern provinces and eastern Inner Mongolia. During the operation of the wind turbine cabin, it is greatly affected by the natural environment. Dust, sand and catkins in the air can cause the cabin to be polluted. This causes the heat dissipation performance of the cabin gearbox heat sink to decrease. During daily maintenance, operation and maintenance personnel need to clean the cabin environment regularly.

[0004] Traditional cabin dust removal methods rely solely on maintenance personnel to board the aircraft for processing. Manual cleaning of cabin equipment and gearbox heat exchangers is often used. When the cabin ambient temperature is high, the cabin skylight can only be opened to cool down with natural wind. This consumes manpower and material resources, and the downtime is long. The dust removal and heat dissipation effect is limited, and the cleaning of the gearbox heat exchanger is only a temporary solution. At the same time, the repeated flushing of the gearbox oil cooling heat exchanger surface seriously affects the service life of the gearbox oil cooling fan oil circuit board.

[0005] The second is to replace the high-power cooler. When the gearbox is overheated, the heat exchange capacity of the lubrication system is improved, and the equivalent cooling power of the "air / oil cooler" in the system is increased. Without changing the original oil circuit and fan structure, a higher-power cooler is designed to reduce the oil temperature of the gearbox.

[0006] Third, add a cooler. To improve the heat exchange capacity of the lubrication system, add an independent air-cooled oil cooler to the original cooling system to work with the original cooler. The oil circuit is connected in series with the original cooler.

[0007] At present, none of the above methods can effectively and fundamentally solve the problem of cabin pollution and gearbox heat exchanger blockage. After running for a period of time, the heat dissipation performance of the gearbox decreases, the gearbox oil temperature is still high, and the cabin pollution problem has not been effectively solved, which is not conducive to the normal operation of the equipment. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a fan cabin dust prevention device with easy replacement of filter screen.

[0009] The present invention is achieved in this way.

[0010] A fan cabin dust prevention device, the device comprising:

[0011] A frame installed at the air inlet of the fan nacelle and matching the size of the air inlet of the fan nacelle;

[0012] Active rollers and passive rollers are installed on both sides of the frame and connected to the frame through rotating connecting pieces;

[0013] A motor mounted on one end of the active roller;

[0014] Two pinch rollers installed on the inner side of the frame and arranged parallel to the active roller and the passive roller;

[0015] One end is fixed to the passive roller and wound on the surface of the passive roller, and the other end passes through the filter screen covered on the frame by the pressure wheel and fixed on the active roller;

[0016] The rotating connecting member is placed in the grooves at both ends of the active roller or the passive roller through an adjustment shaft with a stop column at one end. The adjustment shaft includes a stop ring arranged on one side of the stop column. The adjustment shaft passes through a bearing channel of a bearing seat fixed on the frame, and a cavity is formed by the stop ring and the cover cap on the other side of the bearing channel. A compression spring is sleeved on the adjustment shaft in the cavity.

[0017] Furthermore, resistors are provided on bearing seats at both ends or one end of the passive roller to be in pressure contact with the passive roller.

[0018] Furthermore, the resistor is a screw threadedly connected to the bearing seat, and a contact pad is provided at one end of the screw that contacts the passive roller.

[0019] Furthermore, the pressing wheel is rotatably connected to the frame, and its height is lower than the plane formed by the frame.

[0020] Furthermore, the motor is fixed on the frame by being installed on a motor seat, a rotating wheel is provided on the adjusting shaft of the rotating connecting piece connected to one side of the motor, the output shaft of the motor drives the rotating wheel to rotate through a synchronous output belt, and a backstop is installed on the free end of the adjusting shaft.

[0021] Furthermore, the backstop includes a backstop wheel fixed to the adjustment shaft and a pressure plate installed on the frame and connected to the backstop wheel to prevent the backstop wheel from rotating.

[0022] Furthermore, filter screen pressing plates are installed on the frames on both sides of the filter screen.

[0023] Furthermore, a bearing is arranged between the adjustment shaft and the cavity in the cavity.

[0024] Furthermore, the heights of the active roller and the passive roller are lower than the plane formed by the filter screen on the frame.

[0025] Compared with the prior art, the present invention has the following beneficial effects: the dust-proof device provided by the present invention replaces the filter screen by rotating the active roller and the passive roller, the active roller and the passive roller can be manually rotated by rotating the connecting piece for manual adjustment, and the active roller and the passive roller can be conveniently disassembled and replaced by connecting the rotating connecting piece with the active roller and the passive roller. By providing a resistor, a certain resistance is given to the passive roller, and by adjusting the contact force with the passive roller, a certain rotation resistance is given to the passive roller, thereby preventing the filter screen from being loosened due to excessive rotation of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a device provided in an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the side structure provided by an embodiment of the present invention;

[0028] Figure 3 A schematic structural diagram of a rotating connection member provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] See also Figure 1 Combination Figure 2 and Figure 3 The present invention provides a fan cabin dust prevention device, which comprises: a frame 1, an active roller 4, a passive roller 5, a motor 11 for driving the active roller, a clamping wheel (6, 7) and a filter screen, wherein the frame 1 is installed at the air inlet of the fan cabin, and its size matches the air inlet; the frame 1 plays a supporting and mounting role, the active roller 4 and the passive roller 5 are arranged in parallel, and are respectively installed on the symmetrical sides of the outside of the frame and connected to the frame 1 through a rotating connecting piece 10; the active roller 4 and the passive roller 5 have the same diameter, and the active roller 4 and the passive roller 5 are connected to the frame 1 in a detachable structure, and both ends of the active roller 4 and the passive roller 5 are connected through a rotating connecting piece.

[0031] Taking the passive roller as an example, baffles 103 are provided at both ends of the passive roller 5, and a connecting column with a slot is provided coaxially with the passive roller 5 outside the baffle 106. The diameter of the connecting column is smaller than the diameter of the passive roller. The rotating connecting member is placed in the slots at both ends of the passive roller through an adjusting shaft 104 with a baffle column 107 at one end. When clamped and rotated, the adjusting shaft 104 drives the passive roller to rotate together. The adjusting shaft 104 includes a baffle ring 106 provided on one side of the baffle column 107. In order to provide strength, a connecting rod 108 between the baffle ring and the baffle column is a column with a diameter larger than the adjusting column. A hole is opened on the adjusting shaft 104, and a lever 105 is inserted into the hole for manually rotating the adjusting rod. The adjusting shaft passes through a channel 102 on a bearing 9 of a bearing seat fixed on the frame, and a cavity is formed through the baffle ring 106 and the cap 101 on the other side of the bearing channel. A compression spring is sleeved on the adjusting shaft in the cavity. In this way, when the adjusting shaft is pulled, the compression spring is compressed. At this time, the baffle column is detached from the slot, and then the passive roller is taken out. The active roller can be taken out and replaced in the same way.

[0032] The surfaces of the active roller and the passive roller are provided with pressing grooves from one end to the other end, and the filter net can be pressed into the pressing groove, so that one end of the filter net is fixed to the passive roller and wound around the surface of the passive roller, covered on the frame and fixed on the active roller.

[0033] In order to compress the filter screen and make the filter screen flat, two pressing wheels are arranged on the inner side of the frame in parallel with the active roller and the passive roller. The setting requirements of the pressing wheels are: the pressing wheels (6, 7) are rotatably connected to the frame 1, the height of the pressing wheels is lower than the plane formed by the frame 1, and the height of the active roller and the passive roller is lower than the plane formed by the filter screen on the frame, so that the filter screen transitions from the frame to the pressing wheels to form a slope, thereby giving the filter screen a certain pulling force to both sides.

[0034] The active roller 4 is driven to rotate by a motor provided at a rotating connection at one end. The motor is installed on a motor seat, and the motor seat is fixedly connected to the frame. A rotating wheel is provided on the adjusting shaft 104 of the rotating connection on one side of the motor. The output shaft of the motor drives the rotating wheel 111 to rotate through a synchronous output belt 110, thereby driving the active roller to rotate. When the active roller rotates, the passive roller is driven to rotate. In order to prevent the active roller from rotating, a backstop is installed at the free end of the adjusting shaft connected to the motor.

[0035] Further, the check device comprises a check wheel 12 fixed with an adjustment shaft and a pressing plate 13 installed on the frame and the check wheel to prevent the check wheel from rotating. When the check wheel 12 is to rotate, the pressing plate 13 blocks the check wheel from rotating.

[0036] In order to prevent the passive roller from continuing to rotate after the active roller stops due to inertia, a resistor 14 is provided on the bearing seat at both ends or one end of the passive roller to contact the side of the passive roller with pressure. In one embodiment, the resistor 14 can be a screw 141 threadedly connected to the bearing seat, and a contact pad 142 is provided at one end of the screw that contacts the passive roller. By adjusting the length of the screw to control the friction force in contact with the passive roller, the purpose of preventing the passive roller from continuing to rotate due to inertia is achieved.

[0037] In one embodiment, filter screen pressing plates (2, 3) are installed on the frames on both sides of the filter screen. The filter screen pressing plates can be a whole or several separate parts to press the two free sides of the filter screen.

[0038] In a preferred embodiment, a bearing is arranged between the adjustment shaft and the cavity in the cavity, so that the cavity can be used as two cavities, one is the bearing cavity and the other is the compression spring cavity.

[0039] The working process is controlled intelligently. By collecting the environmental parameters in the cabin, it is determined whether the filter needs to be replaced. When the filter needs to be replaced, the motor drives the active roller to rotate and the used filter is wound around the active roller. When the active roller and passive roller need to be replaced, the adjustment shaft is pulled. At this time, the blocking column is separated from the card slot. After placing the new active roller or passive roller in the correct position and finding the position of the card slot, the adjustment shaft is released. Under the action of the compression spring, the adjustment shaft presses the active roller or passive roller. The filter is fixed to the active roller after passing through the clamping wheel.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fan cabin dust prevention device, characterized in that: The device includes: A frame installed at the air inlet of the fan nacelle and matching the size of the air inlet of the fan nacelle; Active rollers and passive rollers are installed on both sides of the frame and connected to the frame through rotating connecting pieces; A motor mounted on one end of the active roller; Two pinch rollers installed on the inner side of the frame and arranged parallel to the active roller and the passive roller; One end is fixed to the passive roller and wound on the surface of the passive roller, and the other end passes through the filter screen covered on the frame by the pressure wheel and fixed on the active roller; The rotating connecting member is placed in the slots at both ends of the active roller or the passive roller through an adjustment shaft with a stop column at one end, the adjustment shaft includes a stop ring arranged on one side of the stop column, the adjustment shaft passes through a bearing channel of a bearing seat fixed on the frame, and a cavity is formed by the stop ring and the cap on the other side of the bearing channel, and a compression spring is sleeved on the adjustment shaft in the cavity; The motor is fixed on the frame by being mounted on a motor seat, a rotating wheel is arranged on the adjusting shaft of the rotating connecting member connected to one side of the motor, the output shaft of the motor drives the rotating wheel to rotate through a synchronous output belt, and a backstop is arranged on the free end of the adjusting shaft; The backstop comprises a backstop wheel fixed to the adjustment shaft and a pressure plate mounted on the frame and preventing the backstop wheel from rotating; A bearing is arranged between the adjusting shaft and the cavity in the cavity.

2. The device according to claim 1, characterized in that Resistors are arranged on bearing seats at both ends or one end of the passive roller and are in pressure contact with the passive roller.

3. The device according to claim 2, characterized in that The resistor is a screw connected to the bearing seat through a thread, and a contact pad is arranged at one end of the screw that contacts the passive roller.

4. The device according to claim 1, characterized in that The pressing wheel is rotatably connected to the frame, and its height is lower than the plane formed by the frame.

5. The device according to claim 1, characterized in that Filter screen pressing plates are installed on the frames at both sides of the filter screen.

6. The device according to claim 1, characterized in that The heights of the active roller and the passive roller are lower than the plane formed by the filter screen on the frame.

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