Centralized lubricating device for reamer equipment
By installing a controller and rotary encoder on the screw conveyor, combined with a flow sensor and a level sensor, the grease replenishment interval can be dynamically adjusted, solving the problem of uneven grease replenishment in the existing technology and achieving stable operation and extended service life of the equipment.
Patent Information
- Application Number
- CN202520602705.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-04-01
AI Technical Summary
Existing automatic grease replenishment equipment cannot adjust the grease replenishment interval according to the speed of the screw conveyor, resulting in excessive or insufficient grease replenishment, which affects the operation of the equipment.
By employing a controller and rotary encoder, the operation of the oil pump is dynamically controlled by monitoring the number of rotations of the screw shaft. Combined with a flow sensor and a level sensor, the oil replenishment interval can be intelligently adjusted.
To ensure the stable operation of screw conveyors, extend their service life, avoid uneven wear, and improve equipment reliability.
Smart Images
Figure CN223690818U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to lubricating device technical field, concretely relates to a centralized lubricating device of reamer equipment. BACKGROUND
[0002] The coal powder reamer hanging bearing bush is a key component in the coal powder conveying equipment (such as a screw conveyor), which bears the weight of the coal powder reamer (screw blade) and the screw shaft, and plays the role of supporting and reducing wear during the operation of the equipment, in order to ensure the normal operation of the hanging bearing bush and prolong the service life, it is necessary to regularly supplement the lubricating oil, for the screw conveyor with a long length, in order to prevent the screw shaft from sagging and deforming due to its own gravity and the weight of the material, a plurality of hanging bearing bushes need to be arranged to support the screw shaft, so that the screw shaft is kept in the correct position, the automatic supplementing equipment is commonly used in the prior art to replace the traditional manual supplementing, to realize the regular automatic supplementing of the plurality of hanging bearing bushes, and reduce the labor of manual supplementing.
[0003] The existing automatic supplementing equipment mainly sets the supplementing time period according to the running time of the screw conveyor or through a timer, when the screw conveyor runs for a certain time or the fixed time length set by the timer, the control system passes through the oil pump and makes the lubricating oil in the oil tank pass into each lubricating point along the oil pipe and the oil injection hole, but the running speed of the screw conveyor is not fixed, when the screw conveyor runs at a high speed within a certain time, the number of rotations of the reamer and the screw shaft is large, the relative motion speed between the bearing bush and the screw shaft increases, the bearing bush and the screw shaft have more contact and more interaction, which usually causes the wear between the two to increase, and the supplementing interval needs to be shortened, when the screw conveyor runs at a low speed, the number of rotations of the reamer and the screw shaft is small, the relative motion speed between the bearing bush and the screw shaft decreases, the bearing bush and the screw shaft have less contact and less interaction, which usually causes the wear between the two to decrease, and the supplementing interval needs to be extended, and the automatic supplementing equipment in the prior art is not convenient for adjusting the supplementing interval according to the friction between the bearing bush and the screw shaft and the rotating speed of the screw conveyor, so that the supplementing is excessive or insufficient, and the operation of the equipment is affected. CONTENT OF THE UTILITY MODEL
[0004] In view of the above problems, the utility model aims at providing a centralized lubricating device of reamer equipment, which solves the problems in the background art.
[0005] The utility model provides a kind of reamer equipment centralized lubricating device, including the oil tank for storing lubricating oil, oil pump being arranged above oil tank, oil outlet pipe for connecting the input end of oil pump and the output end of oil tank and the oil supply branch pipe for carrying out greasing to each hanger bearing bush lubrication point and its near end being connected with the output end of oil pump is connected with spiral conveyor, still including controller and the rotary encoder of reamer being installed on spiral conveyor, the output end of rotary encoder is connected with the signal input end of controller, for providing the signal of spiral conveyor reamer rotation circle number to controller, the output end of controller is used to output control signal, and the control signal is used to control the operation of oil pump.
[0006] Preferably, when the controller monitors that the driving device starts, the controller controls the operation of the oil pump.
[0007] Preferably, when the controller monitors that the driving device is closed, the controller controls the operation of the oil pump.
[0008] Preferably, an electromagnetic valve and a flow sensor are installed on each of the oil supply branch pipes, and the controller dynamically controls the opening and closing of the electromagnetic valve according to the comparison between the actual oil flow monitored by the flow sensor and the preset greasing amount.
[0009] Preferably, a liquid level sensor and an alarm are further installed at the top cover of the oil tank, and when the liquid level sensor monitors that the oil amount in the oil tank is lower than a preset threshold, the controller controls the operation of the alarm.
[0010] Preferably, the alarm is an acoustic and / or optical alarm.
[0011] The utility model has the beneficial effects that: by setting the controller and the rotary encoder, the controller outputs a control signal to control the operation of the oil pump according to the rotation circle number signal of the spiral shaft and the reamer provided by the rotary encoder, so as to intelligently adjust the greasing interval according to the actual wear condition between the spiral shaft and the bearing bush, ensure the stable operation of the spiral conveying equipment, and prolong the service life. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is the first perspective structural diagram of the utility model;
[0013] Figure 2 It is the enlarged structural diagram of A in the utility model;
[0014] Figure 3 It is the second perspective structural diagram of the utility model;
[0015] Figure 4 It is the first sectional structural diagram of the utility model;
[0016] Figure 5The second section view structure schematic diagram of the utility model is shown in the figure.
[0017] Figure 6 The enlarged structure schematic diagram of B in the utility model is shown in the figure.
[0018] In the figure: 1, oil tank; 2, oil pump; 3, oil outlet pipe; 4, hanging bearing bush; 5, oil supply branch pipe; 6, screw conveyor; 7, controller; 8, reamer; 9, rotary encoder; 10, electromagnetic valve; 11, flow sensor; 12, liquid level sensor; 13, driving device; 14, screw shaft; 15, oil injection hole. DETAILED DESCRIPTION
[0019] In order to make the skilled in the art better understand the technical scheme of the utility model, the utility model is described in detail below in combination with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the utility model.
[0020] The existing reamer equipment centralized lubricating device of the utility model mainly includes an oil tank 1 for storing lubricating oil, an oil pump 2 connected with the oil tank 1 through an oil outlet pipe 3, and an oil supply branch pipe 5 connected with the output end of the oil pump 2 and having one end close to the screw conveyor 6 for supplementing grease to each hanging bearing bush 4 lubrication point, wherein the hanging bearing bush 4 is usually installed in the inside of a hanging bearing, the hanging bearing is installed on the machine barrel of the screw conveyor 6 through a hanging seat, the connection mode of the hanging bearing bush 4 and the screw shaft 14 is commonly an oil sliding block connection, an embedded tongue type connection and the like, mainly plays the role of fixing and stabilizing the screw shaft 14, ensures the stable rotation of the screw shaft 14 in a specific groove body (such as a U-shaped groove body), so as to push the material forward, further includes a time relay (not shown in the figure) and an electromagnetic valve 10, the time relay and the electromagnetic valve 10 are connected, the time relay can control the oil injection time interval and the oil injection time length, during the operation of the screw conveyor 6, the oil pump 2 is started once every interval, the oil pump 2 delivers the oil in the oil tank 1 to each oil supply branch pipe 5 through the oil outlet pipe 3, and then delivers the oil to each lubrication point along each oil supply branch pipe 5, realizes the timed and quantitative supplement of the hanging bearing bush 4, and the above is the introduction of the existing reamer equipment centralized lubricating device.
[0021] Generally speaking, the screw conveyor 6 can work continuously for 8-16 hours per day, but the coal powder screw conveyor 6 used in the chemical production process such as thermal power plant, steel plant, coal powder preparation workshop and coal gasification is generally working continuously. Taking the thermal power plant as an example, after the coal is ground into coal powder by the coal mill, the coal powder needs to be continuously conveyed to the burner of the boiler by the coal powder screw conveyor 6 to ensure the stable combustion of the boiler, so that the power generation can be continued. Once the screw conveyor 6 stops working, it may cause the coal supply of the boiler to be interrupted, affect the power generation efficiency and even cause shutdown accident. At the same time, the running speed of the screw conveyor 6 needs to be adjusted according to the production demand in the use process. For example, when a large amount of coal powder needs to be conveyed quickly, the conveying speed can be increased; and when the coal powder conveying amount needs to be controlled finely, the conveying speed can be reduced. As known from the above, the existing central lubricating device of the reamer has the following defects, that is, the existing automatic grease supplementing device mainly sets the supplementing interval and supplementing amount of grease according to the running time of the screw conveyor 6. The control system passes through the starting of the oil pump 2 to pass the lubricating oil in the oil tank into each lubricating point along the oil pipe and the oil injection hole 15. However, the running speed of the screw conveyor 6 is not fixed. In a certain period of time, when the rotating speed of the screw conveyor 6 is fast, the rotating number of the reamer 8 and the screw shaft 14 is more, the relative movement speed between the bearing bush and the screw shaft 14 is increased, the bearing bush and the screw shaft 14 have more contact and more interaction, which usually causes the abrasion between the bearing bush and the screw shaft 14 to be increased, and the supplementing interval of the grease needs to be shortened. When the rotating speed of the screw conveyor 6 is slow, the rotating number of the reamer 8 and the screw shaft 14 is less, the relative movement speed between the bearing bush and the screw shaft 14 is reduced, the bearing bush and the screw shaft 14 have less contact and less interaction, which usually causes the abrasion between the bearing bush and the screw shaft 14 to be reduced, and the supplementing interval of the grease needs to be prolonged. The automatic grease supplementing device in the prior art is not convenient for adjusting the supplementing interval of the grease according to the friction between the bearing bush and the screw shaft 14 and the rotating speed of the screw conveyor 6, so that the supplementing of the grease may be excessive or insufficient, which affects the operation of the equipment.
[0022] Based on the above problems, the utility model adopts the following improvement mode to solve, such as Figures 1-6As shown, the central lubricating device of the reamer device is improved according to the interval of the supplement of the hanging bearing 4, which is different from the prior art. The controller 7 and the rotary encoder 9 are added on the basis of the prior art. The rotary encoder 9 is installed on the screw shaft 14 of the screw conveyor 6. When the motor of the driving device 13 is started, the screw shaft 14 and the reamer 8 are rotated. The rotary encoder 9 accurately calculates the number of rotations of the reamer 8 and the screw shaft 14 by monitoring the rotation of the screw shaft 14. The corresponding parameters are set in advance on the controller 7, that is, when the screw shaft 14 rotates to a certain number of turns, the lubricating device supplements the hanging bearing 4 once. For example, when the screw shaft 14 rotates 10,000 turns (calculated from the start of the driving device 13, when the screw conveyor 6 is closed, the rotary encoder 9 is also closed and the calculated number of turns is zero, and when the screw conveyor 6 is opened next time, the counting is restarted), the hanging bearing 4 is supplemented once; when the screw shaft 14 rotates to 20,000 turns, the hanging bearing 4 is supplemented again; when the screw shaft 14 rotates to 30,000 turns, the hanging bearing 4 is supplemented again, and so on according to the above rule. Specifically, when the rotary encoder 9 monitors that the screw shaft 14 rotates to the corresponding number of turns, the signal is transmitted to the controller 7, the controller 7 controls the operation of the oil pump 2, the oil pump 2 transports the oil in the oil tank 1 to each oil supply branch pipe 5 through the oil outlet pipe 3, and then transports the oil to each lubricating point along each oil supply branch pipe 5, so as to ensure that each bearing gap is full of lubricating grease. In order to quantitatively supplement the oil each time, the amount of each supplement is set in advance on the controller 7. The electromagnetic valve 10 and the flow sensor 11 are installed on each oil supply branch pipe 5. When the flow sensor 11 on one of the oil supply branch pipes 5 monitors that the actual oil flow is equal to the preset supplement amount, the signal is transmitted to the controller 7, the controller 7 controls the electromagnetic valve 10 on the oil supply branch pipe 5 to close, and when the flow sensors 11 on all the oil supply branch pipes 5 monitor that the actual oil flow is equal to the preset supplement amount, the controller 7 closes all the electromagnetic valves 10 and the oil pump 2 at the same time (for example Figure 5 As shown, the number of hanging bearings 4 is three, and the number of oil supply branch pipes 5 is three).
[0023] Furthermore, for screw conveyors 6 used for extended periods, if a shutdown occurs due to equipment failure, the time interval between the shutdown and the last lubrication or restart time may be considerable. Lubricating the bearing 4 during shutdown can prevent rust due to insufficient grease. During the shutdown, the bearing 4 may gradually dry out due to lack of lubrication, leading to increased friction. Additionally, shutdowns may involve equipment disassembly and maintenance, which can also affect the lubrication of the bearing 4. Therefore, lubrication should be performed on screw conveyors 6 upon restarting. When the drive device 13 is started, it drives the screw shaft 14 to rotate, which in turn drives the rotary encoder 9 to generate a corresponding signal, that is, the number of rotations increases from 0 to a certain value. The controller 7 can determine that the drive device 13 is in the start state based on the signal monitored by the rotary encoder 9. At this time, the controller 7 controls the lubrication device to work and replenish grease to the bearing 4. When the drive device 13 is turned off, the screw shaft 14 stops working, and the rotary encoder 9 detects that the number of rotations of the screw shaft 14 decreases from a certain value to 0. The controller 7 can determine that the drive device 13 is in the off state based on the signal monitored by the rotary encoder 9. At this time, the controller 7 controls the lubrication device to work and replenish grease to the bearing 4.
[0024] Furthermore, such as Figures 3-4 As shown, in order to avoid affecting the normal use of the lubrication device, a liquid level sensor 12 and an alarm are installed on the top cover of the oil tank 1. When the liquid level sensor 12 detects that the oil level in the oil tank 1 is lower than the preset threshold, it transmits the signal to the controller 7. The controller 7 controls the alarm to run, so as to remind the staff to replenish the lubricating oil in the oil tank 1 in time. The alarm can be an audible and / or visual alarm. Using audible and / or visual alarms can intuitively and quickly remind the operators to pay attention to abnormal cardboard position or transmission failure. This design enables the operators to react quickly and take corresponding measures.
Claims
1. A centralized lubrication device for a auger machine, comprising an oil tank (1) for storing lubricating oil, an oil pump (2) disposed above the oil tank (1), an oil outlet pipe (3) for connecting the input end of the oil pump (2) to the output end of the oil tank (1), and an oil supply branch pipe (5) connected to the output end of the oil pump (2) and having its end near the screw conveyor (6) connected to replenish grease to the lubrication points of each hanger bearing (4), characterized in that: The controller (7) and a rotary encoder (9) installed on the screw shaft (14) of the screw conveyor (6) are further included, an output end of the rotary encoder (9) is connected with a signal input end of the controller (7), and the rotary encoder (9) is used for providing a signal of the number of rotations of the screw shaft (14) of the screw conveyor (6) to the controller (7), and an output end of the controller (7) is used for outputting a control signal, and the control signal is used for controlling the operation of the oil pump (2).
2. A centralized lubrication device for a reamer apparatus as claimed in claim 1, characterized in that: When the controller (7) monitors that the screw conveyor (6) is started, the controller (7) controls the operation of the oil pump (2).
3. A centralized lubrication device for a reamer apparatus as claimed in claim 1, characterized in that: When the controller (7) monitors that the screw conveyor (6) is closed, the controller (7) controls the operation of the oil pump (2).
4. A device for centralized lubrication of a reamer according to claim 1, 2 or 3, characterized in that: The electromagnetic valve (10) and the flow sensor (11) are installed on each of the oil supply branch pipes (5), and the controller (7) dynamically controls the opening and closing of the electromagnetic valve (10) according to the comparison between the actual oil flow monitored by the flow sensor (11) and the preset oil supplement amount.
5. A centralized lubrication device for a reamer apparatus as defined in claim 1, characterized in that: The liquid level sensor (12) and the alarm installed on the top cover of the oil tank (1) are further included, and when the liquid level sensor (12) monitors that the oil amount in the oil tank (1) is lower than a preset threshold, the controller (7) controls the operation of the alarm.
6. A centralized lubrication device for a reamer apparatus as claimed in claim 5, characterized in that: The alarm is an acoustic and / or optical alarm.