CN107747674B - Lubrication system of sand making machine and sand making machine - Google Patents
Lubrication system of sand making machine and sand making machine Download PDFInfo
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- CN107747674B CN107747674B CN201711177457.XA CN201711177457A CN107747674B CN 107747674 B CN107747674 B CN 107747674B CN 201711177457 A CN201711177457 A CN 201711177457A CN 107747674 B CN107747674 B CN 107747674B
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- lubrication
- heating
- making machine
- lubrication system
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/36—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with feed by pumping action of the member to be lubricated or of a shaft of the machine; Centrifugal lubrication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/02—Arrangements for conditioning of lubricants in the lubricating system by cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/04—Arrangements for conditioning of lubricants in the lubricating system by heating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a lubrication system of a sand making machine and the sand making machine. The lubrication system comprises a lubrication oil tank, a delivery pump and a lubrication oil port for outputting lubrication oil, an oil inlet of the delivery pump is connected with the lubrication oil tank, an oil outlet of the delivery pump is connected with the lubrication oil port, the lubrication system further comprises a lubrication oil heat dissipation device arranged between the oil outlet of the delivery pump and the lubrication oil port, the lubrication oil heat dissipation device comprises a heat exchanger and a fan for heat dissipation of the heat exchanger, an oil inlet of the heat exchanger is connected with the oil outlet of the delivery pump, and the oil outlet of the heat exchanger is connected with the lubrication oil port. According to the lubricating system, the lubricating oil heat dissipation device is arranged to conduct heat dissipation on the circularly lubricated lubricating oil, so that the excessive temperature of the lubricating oil is effectively avoided, the lubricating effect of the lubricating oil is guaranteed, and the performance of the sand making machine is improved.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a lubrication system of a sand making machine and the sand making machine.
Background
The movable sand making machine is a key device in the fields of sand production, metal mines and the like. The crushing main machine of the movable sand making machine is driven by a hydraulic motor or a motor, and power is transmitted to the crushing main shaft through a belt to drive the crushing main shaft to rotate at a high speed. The materials entering the crushing cavity are thrown out at high speed, and the materials moving at high speed collide with the impact plate or collide with each other to realize crushing.
When the movable sand making machine breaks materials, the breaking main shaft and the motor driving shaft which rotate at high speed are simultaneously subjected to radial and axial loads, and the loads directly act on the bearings of the two shafts, so that the bearings are worn and a large amount of heat is generated. If heat cannot be timely dissipated, the bearing can be burnt out due to the fact that the temperature of the bearing continuously rises, and the host cannot work normally. In addition, if the bearing cannot be well lubricated, metal particles generated by abrasion can aggravate the abrasion of the bearing, and the service life of the bearing is shortened. The lubrication system is therefore critical to the performance and service life of the mobile sand making machine.
When the thin oil lubrication system is applied to the fixed sand making machine, the thin oil lubrication system pumps lubricating oil to the upper part of a main shaft of the sand making machine through an alternating current motor driving oil pump, and the lubricating oil returns to a lubricating oil tank through an oil port at the lower part of the main shaft after flowing through a bearing. Because the thin oil lubrication system needs to be driven by a 380V alternating current motor, and the mobile sand making machine generally works in the field and can not provide 380V industrial electricity, the thin oil lubrication system is not used on the mobile sand making machine. Secondly, because the movable sand making machine generally works in an outdoor place, when working in winter or cold northern areas, the lubricating oil is high in load and even can not be started due to the fact that the temperature is low, and the viscosity of the lubricating oil is increased and the fluidity of the lubricating oil is reduced; and the excessive viscosity of the lubricating oil also can cause poor heat dissipation effect of the bearing, and the temperature rise of the main shaft bearing is rapid. In addition, the lubricating oil is subjected to heat exchange with the bearing continuously in the forced circulation process, so that the lubricating oil temperature can be increased continuously, the viscosity of the lubricating oil is reduced, the bearing capacity is reduced, and the lubricating effect is reduced.
Disclosure of Invention
The invention aims to provide a lubrication system of a sand making machine and the sand making machine so as to realize heat dissipation on lubricating oil.
The first aspect of the invention provides a lubrication system of a sand making machine, which comprises a lubrication oil tank, a delivery pump, a lubrication oil port for outputting lubrication oil, an oil inlet of the delivery pump connected with the lubrication oil tank, an oil outlet of the delivery pump connected with the lubrication oil port, and a lubrication oil heat dissipation device arranged between the oil outlet of the delivery pump and the lubrication oil port, wherein the lubrication oil heat dissipation device comprises a heat exchanger and a fan for heat dissipation of the heat exchanger, an oil inlet of the heat exchanger is connected with the oil outlet of the delivery pump, and the oil outlet of the heat exchanger is connected with the lubrication oil port.
Further, the lubricating oil heat dissipation device further comprises a pressure protection valve which is arranged in parallel with the heat exchanger, the pressure protection valve has a preset opening pressure, and when the oil pressure of the oil outlet of the conveying pump is larger than the preset opening pressure, the oil flows to the lubricating oil port through the pressure protection valve.
Further, the lubrication system further comprises a first pressure sensor arranged between the oil outlet of the heat exchanger and the lubrication oil port.
Further, the lubrication system further comprises a first temperature sensor arranged on the oil return path of the lubrication oil port and a control device coupled with the second temperature sensor, and the control device controls the rotating speed of the fan according to the temperature measured by the first temperature sensor.
Further, the lubrication system further comprises a lubrication oil heating device, the lubrication oil heating device comprises a heat pump and a heating overflow valve, an oil inlet of the heat pump is communicated with the lubrication oil tank, and an oil outlet of the heat pump is communicated with the lubrication oil tank through the heating overflow valve so as to heat lubrication oil in the lubrication oil tank.
Further, the lubricating oil heating device further comprises a second temperature sensor for measuring the temperature of the lubricating oil in the lubricating oil tank, and the lubricating system comprises a control device which is coupled with the second temperature sensor and controls the overflow pressure of the heating overflow valve according to the temperature measured by the second temperature sensor.
Further, the lubricating oil heating device further comprises a second pressure sensor arranged between the oil outlet of the heating pump and the heating overflow valve.
Further, the lubrication system further comprises a hydraulic control system, wherein the hydraulic control system comprises a hydraulic pump and a multi-way valve, and the multi-way valve comprises a first working link for controlling the heating pump, a second working link for controlling the conveying pump and a third working link for controlling the fan.
Further, the hydraulic control system further includes an engine for driving the hydraulic pump.
A second aspect of the present invention provides a sand making machine, comprising a main machine main shaft, a driving motor shaft for driving the main machine main shaft to rotate, and a lubrication system of the sand making machine provided by the first aspect of the present invention, wherein a lubrication oil port is used for conveying lubrication oil into the main machine main shaft and/or the motor shaft to lubricate the main machine main shaft/motor shaft.
The lubrication system comprises a lubrication oil tank, a delivery pump, a lubrication oil port for outputting lubricating oil, an oil inlet of the delivery pump is connected with the lubrication oil tank, an oil outlet of the delivery pump is connected with the lubrication oil port, the lubrication system further comprises a lubricating oil heat dissipation device arranged between the oil outlet of the delivery pump and the lubrication oil port, the lubricating oil heat dissipation device comprises a heat exchanger and a fan for heat dissipation of the heat exchanger, an oil inlet of the heat exchanger is connected with the oil outlet of the delivery pump, and the oil outlet of the heat exchanger is connected with the lubrication oil port. According to the lubricating system, the lubricating oil heat dissipation device is arranged to conduct heat dissipation on the circularly lubricated lubricating oil, so that the excessive temperature of the lubricating oil is effectively avoided, the lubricating effect of the lubricating oil is guaranteed, and the performance of the sand making machine is improved.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
fig. 1 is a schematic structural diagram of a lubrication system of a sand making machine according to an embodiment of the present invention.
Each reference numeral represents:
1-a hydraulic oil tank; 2-a hydraulic oil filter; 3-engine; 4-hydraulic pump; 5-multiway valve; 6-a lubricating oil tank; 7-a heating motor; 8-heating a pump; 9-a second pressure sensor; 10-an oil absorption filter; 11-a second temperature sensor; 12-heating an overflow valve; 13-a conveying motor; 14-a transfer pump; 15-a delivery overflow valve; 16-a double cartridge filter; 17-lubricating oil heat dissipation device; 171-heat exchanger; 172-a pressure protection valve; 173-a fan; 18-a first pressure sensor; 19-spindle flow sensor; 20-a motor shaft flow sensor; 21-a second temperature sensor; 22-an oil return filter; 23-two-position hydraulic switch.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The sand making machine comprises a main machine main shaft S1, a driving motor shaft S2 for driving the main machine main shaft S1 to rotate and a lubricating system for lubricating the main machine main shaft S1 and the driving motor shaft S2. The lubrication system has a function for feeding lubrication oil into the main machine shaft S1 and the drive motor shaft S2 to lubricate the main machine shaft S1 and the drive motor shaft S2.
The sand making machine of the embodiment is a mobile sand making machine.
The structure of the lubrication system of the sand making machine of the present embodiment will be described in detail with reference to fig. 1.
The lubrication system of the sand making machine of the present embodiment includes a lubrication oil tank 6, a transfer pump 14, and a lubrication oil port for outputting lubrication oil. An oil inlet of the delivery pump 14 is connected with the lubricating oil tank 6, and an oil outlet of the delivery pump 14 is connected with the lubricating oil port. The transfer pump 14 pumps the lubricating oil in the lubricating oil tank 6 to the lubricating oil port to output the lubricating oil from the lubricating oil port to lubricate the main machine spindle and the drive motor shaft. The lubrication system of this embodiment includes two lubrication ports that lubricate the main shaft of the host and the drive motor shaft, respectively.
In order to monitor the flow rates at the two lubrication ports in real time, the lubrication system of the present embodiment further includes a main shaft flow sensor 19 and a motor axial flow sensor 20 respectively disposed at the two lubrication ports.
Specifically, the conveying pump 14 of the present embodiment is driven by the conveying motor 13.
Because the lubricating oil is continuously in heat exchange with the bearing in the process of lubrication circulation, the temperature of the lubricating oil is continuously increased, so that the viscosity of the lubricating oil is reduced, and the bearing capacity is reduced. In order to enable the lubricating oil to dissipate heat during circulation, the lubrication system of the present embodiment further includes a lubricating oil heat dissipating device 17 disposed between the oil outlet of the transfer pump 14 and the lubricating oil port. The lubricating oil heat dissipating device 17 includes a heat exchanger 171 and a fan 172 for dissipating heat from the heat exchanger 171. An oil inlet of the heat exchanger 171 is connected with an oil outlet of the transfer pump 14, and an oil outlet of the heat exchanger 171 is connected with a lubrication oil port. The lubricating system of this embodiment dispels the heat to the lubricating oil of circulation lubrication through setting up lubricating oil heat abstractor so that effectively avoid the too high lubrication effect of lubricating oil of temperature assurance lubricating oil, and then improves the performance of sand making machine.
In order to better control the temperature of the lubricating oil, the lubrication system of the present embodiment further includes a first temperature sensor 21 disposed on the oil return path of the lubricating oil port, and a control device coupled to the second temperature sensor 21. The control device controls the rotational speed of the fan based on the temperature measured by the first temperature sensor 21. The first temperature sensor 21 is provided between the lubrication oil outlet of the main machine spindle and/or the drive motor shaft and the lubrication oil tank to measure the temperature of the lubrication oil after lubrication of the main machine spindle and/or the drive motor shaft. The control device controls the rotational speed of the fan after receiving the temperature measured by the first temperature sensor 21.
Specifically, when the actual return oil temperature measured by the first temperature sensor 21 is lower than the set return oil temperature, the control device decreases the rotation speed of the fan; when the actual return oil temperature measured by the first temperature sensor 21 is higher than the set return oil temperature, the control device increases the rotation speed of the fan.
The fan of the present embodiment is driven by a fan motor, and the control device controls the rotational speed of the fan by controlling the rotational speed of the fan motor.
Specifically, the present embodiment includes a control valve for controlling the rotational speed of the fan motor. The control valve is a proportional control valve, and the opening of the valve port of the control valve is adjustably arranged to realize stepless adjustment of the rotating speed of the fan, so that the temperature of the lubricating oil is controlled within a set range.
In order to measure the pressure of the lubricating oil at the lubricating oil port so that the worker monitors the lubricating oil pressure of the lubrication system, the lubrication system of the present embodiment further includes a first pressure sensor 18 provided between the oil outlet of the heat exchanger 171 and the lubricating oil port.
The lubricating oil heat dissipating device 17 of the present embodiment further includes a pressure protection valve 172 provided in parallel with the heat exchanger 171. The pressure protection valve 172 has a preset opening pressure, and when the oil pressure of the oil outlet of the transfer pump 14 is greater than the preset opening pressure, the oil pressure is circulated to the oil port through the pressure protection valve 172.
Specifically, the pressure protection valve 172 of the present embodiment is a check valve. The preset opening pressure of the one-way valve is the pressure of the spring. When the pressure of the lubricating oil at the oil outlet of the transfer pump 14 is smaller than the pressure of the spring, the lubricating oil circulates to the lubricating oil port through the heat exchanger 171; when the oil pressure of the oil outlet of the delivery pump 14 is greater than the pressure of the spring, the oil can be delivered to the lubricating oil port through the one-way valve, so that the heat exchanger is prevented from being damaged due to the fact that the lubricating oil is flowed through the heat exchanger due to the fact that the pressure of the lubricating oil is too high.
The oil return path of the lubricating oil of the present embodiment is also provided with an oil return filter 22.
In order to improve the reliability of the system, a double-cylinder filter 16 is provided between the oil outlet of the transfer pump 14 and the oil inlet of the heat exchanger 171 of the present embodiment.
Because the mobile sand making machine generally works in outdoor places, when working in winter or cold northern areas, the temperature is lower, the viscosity of lubricating oil is higher, the fluidity is reduced, and the load of a conveying pump is high and even the conveying pump cannot be started.
In order to solve the problem that the lubrication system is difficult to start before starting lubrication due to low temperature, the lubrication system of the present embodiment further includes a lubrication oil heating device including a heat pump 8 and a heating relief valve 12. The oil inlet of the heat pump 8 is communicated with the lubricating oil tank 6, and the oil outlet of the heat pump 8 is communicated with the lubricating oil tank 6 through a heating relief valve 12 to heat the lubricating oil in the lubricating oil tank 6. Wherein the heating pump 8 is driven by a heating motor 7. During the process that the lubricating oil is sucked out of the lubricating oil tank 6 by the heating pump 8 and returned to the lubricating oil tank through the heating relief valve 12, the relief loss of the lubricating oil is converted into heat, thereby realizing the heating of the lubricating oil.
An oil suction filter 10 is arranged between the oil inlet of the heating pump 8 and the lubricating oil tank 6.
In order to facilitate monitoring of the pressure of the lubricating oil, the lubrication system of the present embodiment further comprises a second pressure sensor 9 arranged between the oil outlet of the heat pump 8 and the heating spill valve 12.
In order to accurately control the temperature of the lubricating oil in the lubricating oil tank, the lubricating oil heating apparatus of the present embodiment further includes a second temperature sensor 11 for measuring the temperature of the lubricating oil in the lubricating oil tank. The lubrication system comprises a control device coupled to the second temperature sensor 11, which controls the relief pressure of the heating relief valve 12 in dependence of the temperature measured by the second temperature sensor 11. In actual engineering use, heating power can be improved by adjusting the overflow pressure of the heating overflow valve, so that heating time is shortened.
Specifically, the heating relief valve may be an electromagnetic proportional relief valve. The control device controls the voltage of the electromagnetic proportional relief valve to control the relief pressure. The present embodiment improves the automation of the whole lubrication system by coupling the second temperature sensor 11 with the control device and the heating relief valve, thereby enabling the temperature of the lubrication tank of the lubrication system to be precisely controlled.
Specifically, the heat pump 8 of the present embodiment is driven by the heating motor 7. The controller controls the heating motor to be turned on or off according to the temperature measured by the second temperature sensor 11.
Since the mobile sand making machine generally works in outdoor environments such as the field, it is difficult to provide 380V industrial power. In order to adapt to the limitation of the working environment to improve the applicability of the mobile sand making machine of the present embodiment, the lubrication system of the present embodiment further includes a hydraulic control system. The present embodiment controls the operations of the heating motor 7, the conveying motor 13, and the fan driving motor by a hydraulic control system.
Specifically, as shown in fig. 1, the hydraulic control system of the present embodiment includes a hydraulic pump 4 and a multiplex valve 5. The multiplex valve 5 comprises a first work unit 51 for controlling the heat pump 7, a second work unit 52 for controlling the feed pump 13 and a third work unit 53 for controlling the fan 173. In this embodiment, the operation of the three motors is controlled by adopting the multiple-way valve 5, so that the system is simple and compact in structure.
Further, the hydraulic control system of the present embodiment further includes an engine 3 for driving the hydraulic pump. The engine 3 is used as a power source to meet the requirements of working sites lacking an industrial power supply in the field and the like. Moreover, the lubrication system of the embodiment adopts full hydraulic drive, has compact structure and small volume, and is more suitable for being applied to mobile equipment.
The hydraulic pump 4 of the present embodiment is a variable displacement pump. The hydraulic pump 4 pumps hydraulic oil in the hydraulic tank 1 into the multiplex valve 5 to supply the multiplex valve with high-pressure oil. A hydraulic oil filter 2 is arranged between the oil inlet of the hydraulic pump 4 and the hydraulic oil tank 1.
As shown in fig. 1, the lubrication system of the present embodiment further includes a two-position liquid level switch 23 provided in the lubrication tank 6. The control device judges whether the lubrication system leaks oil or not through detection of the two-position liquid level switch 23.
The following describes in detail the operation of the lubrication system of the sand making machine of this embodiment:
as shown in fig. 1, the engine 3 is drivingly connected to a variable displacement pump to power the entire lubrication system. The system adopts engine driving, gets rid of dependence on an industrial power supply, and simultaneously adopts full hydraulic driving, so that the volume of the system is greatly reduced compared with that of a same-power electric driving system, and the system is more suitable for being applied to a mobile sand making machine.
The variable pump is driven by the engine 3 to suck out oil from the hydraulic oil tank 1 and the control device controls the multi-way valve 5 to act. The multi-way valve 5 drives the heating motor 7, the conveying motor 13 and the fan motor to operate, respectively. The heating pump 8 is driven by the heating motor 7, and the lubricating oil returns to the lubricating oil tank 6 through the heating relief valve 12 to realize the heating function. In the actual use process, the heating power can be improved and the heating time can be shortened by increasing the overflow pressure of the heating overflow valve 12.
The delivery pump 14 is driven by the delivery motor 13, lubricating oil enters the drive motor shaft S2 and the main machine main shaft S1 through the double-cylinder filter 16 and the lubricating oil heat dissipation device 17 respectively, and the lubricating oil flows back from the bottom of the shaft after lubricating the upper and lower bearings of the drive motor shaft and the main machine main shaft and is filtered by the oil return filter 22 to the lubricating oil tank 6, so that the lubricating function is realized.
Preferably, the lubrication system of the sand making machine of the present embodiment further includes a display and a memory coupled to the control device. The display is used for displaying parameters such as pressure, flow, temperature, liquid level and the like of the lubricating oil of the lubricating system in real time. The memory is coupled with the control device and is used for storing monitoring data, fault information and the like of the lubricating system and providing a data downloading function. The operator can download and analyze the monitoring data and fault information of the lubrication system to better control the lubrication system. In addition, the lubrication system of the embodiment comprises a display device, so that an operator can intuitively see each parameter of the lubrication system and discover the fault type in time, thereby being beneficial to quickly making countermeasures and improving the man-machine interaction performance of the lubrication system.
The control device of the lubrication system of the present embodiment is also capable of sending an alarm signal or a stop signal to prevent damage to the lubrication system when the parameter of the lubrication system is below the set value range. For example, when the level of the lubricant tank is below a set point, the control device sends level data to the display and prompts a low level alarm. At the moment, operators remove the oil leakage fault of the system and fill lubricating oil to a set value after receiving the low liquid level alarm. At this point, the control device will send a signal to the display to deactivate the low level alarm.
In addition, the lubricating system of the embodiment heats the lubricating oil before the lubricating system is started up through the heating overflow valve. After the heating relief valve heats the lubricating oil in the lubricating oil tank, the control device calculates the temperature of the lubricating oil in the lubricating oil tank and the liquid level of the lubricating oil in real time, and only when the temperature and the liquid level of the lubricating oil simultaneously meet corresponding set values, the control device sends a signal to the second working unit 52 to control the start of the conveying pump to realize lubrication.
After the transfer pump 14 is started, the first pressure sensor 18, the spindle flow sensor 19, the motor axial flow sensor 20, and the two-position liquid level switch 23 transmit data such as the lubricating oil pressure, the spindle flow, the motor axial flow, the lubricating oil tank liquid level, etc. to the control device in real time. The control device compares and calculates the real-time monitoring value of each monitored parameter with the set value, and displays the real-time monitoring value and the set value on a display in real time, and when any parameter is lower than the set value, the control device sends a signal to the multi-way valve to stop the operation of the delivery pump 14. And controlling the lubrication system to start after the operator stops and removes the fault.
The lubrication system of the sand making machine provided by the embodiment of the invention has at least the following advantages:
1. the engine is used as a power source, so that the requirements of working sites lacking an industrial power supply in the field and the like are met.
2. The lubricating system can monitor parameters such as temperature, pressure, flow, liquid level and the like of lubricating oil in real time, and has high reliability.
3. The lubrication system adopts overflow heating, so that the heating speed is high, and the starting time is greatly shortened;
4. the lubrication system monitors the temperature of the lubricating oil by using the temperature sensor and feeds the temperature back to the control device, and the control device controls the multi-way valve according to the monitored temperature of the lubricating oil so as to realize stepless regulation of the rotating speed of the fan, so that the temperature of the lubricating oil is controlled in a set range, and the heat dissipation effect is good.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (7)
1. The lubrication system of the sand making machine comprises a lubrication oil tank, a delivery pump and a lubrication oil port for outputting lubrication oil, wherein an oil inlet of the delivery pump is connected with the lubrication oil tank, an oil outlet of the delivery pump is connected with the lubrication oil port, the lubrication system is characterized by further comprising a lubrication oil heat dissipation device arranged between the oil outlet of the delivery pump and the lubrication oil port, the lubrication oil heat dissipation device comprises a heat exchanger and a fan for heat dissipation of the heat exchanger, an oil inlet of the heat exchanger is connected with the oil outlet of the delivery pump, the oil outlet of the heat exchanger is connected with the lubrication oil port, the lubrication system further comprises a first temperature sensor arranged on an oil return path of the lubrication oil port, a control device coupled with the first temperature sensor, a display and a memory coupled with the control device, the control device controls the rotation speed of the fan according to the temperature measured by the first temperature sensor, the display is used for displaying the pressure, the flow, the temperature and the fault information of the lubrication oil of the lubrication system in real time, the memory is used for storing the monitoring data and fault information of the lubrication system, the memory is connected with the lubrication oil tank, the lubrication system is further comprises a heating valve, the lubrication oil tank is used for heating the lubrication oil tank is connected with the heating valve, the lubrication system is further connected with the heating oil tank through the heating valve, the heating the lubrication oil tank is in the heating device, the lubrication system is in the heating up, the lubrication system is further connected with the oil tank, the control device is coupled with the second temperature sensor and controls the overflow pressure of the heating overflow valve according to the temperature measured by the second temperature sensor.
2. The lubrication system of a sand making machine according to claim 1, wherein the lubricating oil heat dissipating device further includes a pressure protection valve provided in parallel with the heat exchanger, the pressure protection valve having a preset opening pressure, and when the oil pressure of the oil outlet of the delivery pump is greater than the preset opening pressure, oil is circulated from through the pressure protection valve to the lubrication port.
3. The lubrication system of a sand making machine of claim 2, further comprising a first pressure sensor disposed between the oil outlet of the heat exchanger and the lubrication port.
4. The lubrication system of a sand making machine of claim 1, wherein the lube oil heating unit further comprises a second pressure sensor disposed between the oil outlet of the heat pump and the heating relief valve.
5. A lubrication system for a sand making machine according to claim 1, further comprising a hydraulic control system comprising a hydraulic pump and a multi-way valve comprising a first work string for controlling the heat pump, a second work string for controlling the transfer pump and a third work string for controlling the fan.
6. The lubrication system of a sand making machine of claim 5, wherein the hydraulic control system further comprises an engine for driving the hydraulic pump.
7. A sand making machine comprising a main machine main shaft, a driving motor shaft for driving the main machine main shaft to rotate and a lubrication system of the sand making machine as claimed in any one of claims 1 to 6, wherein the lubrication oil port is used for conveying lubrication oil into the main machine main shaft and/or the motor shaft to lubricate the main machine main shaft/the motor shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711177457.XA CN107747674B (en) | 2017-11-23 | 2017-11-23 | Lubrication system of sand making machine and sand making machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711177457.XA CN107747674B (en) | 2017-11-23 | 2017-11-23 | Lubrication system of sand making machine and sand making machine |
Publications (2)
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| CN114753999A (en) * | 2022-03-10 | 2022-07-15 | 烟台杰瑞石油装备技术有限公司 | Lubrication system |
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| US2802548A (en) * | 1955-04-19 | 1957-08-13 | Marley Co | Gear box lubricating system with oil filter and cooler |
| CN202579466U (en) * | 2011-12-30 | 2012-12-05 | 一重集团大连设计研究院有限公司 | Heating loop of hydraulic lubricating system |
| CN204533471U (en) * | 2015-03-13 | 2015-08-05 | 中船重工(重庆)海装风电设备有限公司 | A kind of lube oil cooler, step-up gear cooling and lubricating system and Wind turbines |
| CN204901305U (en) * | 2015-08-05 | 2015-12-23 | 宝鸡石油机械有限责任公司 | Triple pressure protection's fracturing pump lubrication oil circuit structure |
| CN205447206U (en) * | 2015-12-21 | 2016-08-10 | 四川宝石机械专用车有限公司 | Lubricating system suitable for fracturing pump power end |
| CN205260789U (en) * | 2015-12-25 | 2016-05-25 | 三一重型能源装备有限公司 | Aerogenerator and gear box lubricating system thereof |
| CN207687645U (en) * | 2017-11-23 | 2018-08-03 | 徐工集团工程机械有限公司 | The lubricating system and sand making machine of sand making machine |
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