CN108662417B - Environment-friendly high-flow grease supply device and method for dry oil - Google Patents
Environment-friendly high-flow grease supply device and method for dry oil Download PDFInfo
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- CN108662417B CN108662417B CN201710196270.8A CN201710196270A CN108662417B CN 108662417 B CN108662417 B CN 108662417B CN 201710196270 A CN201710196270 A CN 201710196270A CN 108662417 B CN108662417 B CN 108662417B
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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
- F16N7/38—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 a separate pump; Central lubrication 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
- F16N23/00—Special adaptations of check valves
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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
- F16N2270/00—Controlling
- F16N2270/20—Amount of lubricant
Abstract
An environment-friendly high-flow grease supply device for dry oil comprises a two-position four-way electromagnetic reversing valve, a two-position five-way hydraulic control reversing valve, a pressure relay, a time relay and a high-flow pump body, wherein an oil outlet A of the two-position four-way electromagnetic reversing valve is connected with an oil inlet P of the two-position five-way hydraulic control reversing valve, an oil outlet B of the two-position four-way electromagnetic reversing valve is connected with an oil inlet T of the two-position five-way hydraulic control reversing valve, two oil outlets A, B on the two-position five-way hydraulic control reversing valve are respectively connected with two cavities of the high-flow1Connecting a field device; the pressure relay detects the pressure in the oil path and controls the motor to stop and the two-position four-way electromagnetic directional valve to change direction, and the time relay controls the motor to start. The invention can realize constant pressure control, ensure continuous grease supply within a certain time, adjust the flow according to the actual application equipment on site, and achieve the effects of reducing dry oil discharge, saving energy and protecting environment on the premise of ensuring sufficient lubrication.
Description
Technical Field
The invention relates to lubrication of mechanical equipment, in particular to an environment-friendly large-flow grease supply device and method for dry oil, which are suitable for equipment needing lubricating grease and lubricating oil lubrication operation.
Background
In a 1780 line finishing mill unit of a certain hot strip mill, because special steel plates such as silicon steel are not considered in the design, the impact problem of the steel plates on the frame roller caused by the plate type reasons when the special steel plates are rolled is inevitable, and the fault of bearing locking frequently occurs due to large impact, so that the problem is urgently solved by technical means.
The problems are as follows: the accidents caused by the locking of the roller bearing of the frame frequently occur at the beginning of the operation, and the secondary accidents of the damage of the gear joint can occur after the bearing is locked. The accident of the frame roller needs more than 6 hours each time, and the service cycle of part of roller ways is only about 3 months. Due to the short service cycle and the long replacement time in case of accidents, the problem of bottleneck restricting production is urgently needed to be solved.
Upon a disassembly check of the damaged frame roll, it was found that poor lubrication was a direct cause of bearing damage. For the condition of poor roller way lubrication, the following attempts are successively made to improve:
first, an attempt was made to replace the VS-42 oil feeder (1.2 ml per stroke) used in the original design with two VS-62 oil feeders (14 ml per stroke) in parallel. The shaft neck oil outlet condition of the frame roller is still not good when the shaft neck is checked by daily repair time after replacement.
Then, the machine frame roller is subjected to parallel point transformation of a dry oil pipeline, and an independent pipeline is specially manufactured from a dry oil main station to supply grease to the machine frame roller independently. The dry oil pipeline after transformation has good lubrication state and can meet the actual use requirement of the frame roller. However, the problem also comes along, because the time for opening and closing the valve is manually controlled by personnel, the oil pumping time of each person is not fixed, and the situation that the valve is forgotten to be closed also often occurs, so that the waste of the dry oil medium is greatly caused. The environmental protection requirement advocated by the state is not utilized, and the cost control purpose of enterprises is not facilitated.
Disclosure of Invention
The invention aims to provide an environment-friendly large-flow grease supply device and method for dry oil, which can effectively control the system pressure and the oil supply time, realize automatic oil supply operation, continuously supply grease within a certain time, reduce the discharge of the dry oil on the premise of ensuring sufficient lubrication, save energy and protect environment.
In order to achieve the purpose, the invention adopts the following technical scheme:
an environment-friendly high-flow grease supply device for dry oil comprises a dry oil supply system and a pressure reducing valve; the dry oil supply system is connected with an oil inlet P of the two-position four-way electromagnetic reversing valve through a pressure reducing valve through an oil way, an oil outlet A of the two-position four-way electromagnetic reversing valve is connected with the oil inlet P of the two-position five-way hydraulic control reversing valve, an oil outlet B of the two-position four-way electromagnetic reversing valve is connected with an oil inlet T of the two-position five-way hydraulic control reversing valve, two oil outlets A, B on the two-position five-way hydraulic control reversing valve are respectively connected with two cavities of the high-flow pump body, and a terminal oil outlet P on the two-position five-way hydraulic control reversing valve1The oil way is connected with field equipment; pressure relay detection deviceThe pressure in the oil way is connected with a motor for controlling the dry oil feeding system to stop and the two-position four-way electromagnetic directional valve to change direction through a circuit, and the time relay is connected with the motor for controlling the dry oil feeding system to start.
A method for supplying oil and lubricating field equipment by adopting an environment-friendly large-flow grease supply device with dry oil comprises the following steps:
1) a of the two-position four-way electromagnetic reversing valve is electrified, the electromagnetic valve moves leftwards for reversing, grease output by a dry oil pump in a dry oil feeding system passes through a pressure reducing valve and then is conveyed to the A port through a P port of the two-position four-way electromagnetic reversing valve, the two-position five-way hydraulic control reversing valve is pushed to move leftwards through a hydraulic control port B, the dry oil enters a cavity on one side of the externally-hung large-flow pump body through an external oil pipe from the P port to the B port of the two-position five-way hydraulic control reversing valve, pressure difference can be generated on two sides of a plunger after oil is fed into the cavity on one side of the large-flow pump body, the grease at an oil feeding end pushes the plunger to move towards the side with small pressure, and the grease in the cavity1Pushing to the field device;
2) when the plunger of the large-flow pump body is pushed to the limit of the other side, the pressure of the whole system is increased, after the rated pressure of the pressure relay is reached, the pressure relay acts, the motor stops running, and the two-position four-way electromagnetic reversing valve B is powered on for reversing after about 5 seconds of delay;
3) the time relay starts to count down, when 3-5 hours are reached, the motor is restarted, after the last action is finished, the two-position four-way electromagnetic directional valve B is electrified, the electromagnetic directional valve is moved rightwards for reversing, grease from a dry oil supply system is conveyed to the two-position five-way hydraulic control directional valve after passing through a port P of the two-position four-way electromagnetic directional valve to a port B, the two-position five-way hydraulic control directional valve is pushed to move rightwards through a hydraulic control port a, and the grease enters the cavity on the other side of the large-flow pump body through an external oil pipe from a port T to a port A of the two-position five-way hydraulic; after oil is fed into the cavity on the other side of the large-flow pump body, pressure difference is generated on two sides of the plunger, grease at the oil inlet end pushes the plunger to move to the side with small pressure, and the grease in the cavity on the side with small pressure passes through the terminal on the two-position five-way hydraulic control reversing valveOil outlet P1Pushed to the field device.
4) When the plunger is pushed to the limit of one side, the pressure of the whole system is increased, after the rated pressure of the pressure relay is reached, the pressure relay acts, the motor stops running, and the two-position four-way electromagnetic reversing valve A is electrified for reversing after about 5 seconds of delay;
5) the time relay starts to count down, and when the time reaches 3-5 hours, the motor is started again, so that the reciprocating circular motion of the large-flow pump body is achieved.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention breaks through the inherent thinking mode and changes the mode that the flow can be increased only by connecting a plurality of oil feeders in parallel in order to realize the increment of the dry oil. The working principle of three-stage amplification is adopted, and the quantity of the dry grease is amplified step by automatically moving the positions of all valve cores of the reversing valve. The grease supply amount is increased to 800ml per stroke from 1.4ml per stroke of the traditional oil feeder, and the problems that the grease supply amount of a single oil feeder is insufficient, a plurality of oil feeders connected in parallel are easy to leak, the grease supply amount is uncontrollable and the like in the field are solved.
2) The invention can realize constant pressure control, ensure continuous grease supply within a certain time and adjust the flow according to the actual application equipment on site, thereby achieving the effects of reducing dry oil discharge, saving energy and protecting environment on the premise of ensuring sufficient lubrication.
3) The original mode that the switch valve is manually controlled by a person to lubricate the equipment is changed, the automatic operation is realized, and the labor intensity is reduced. The external discharge of the dry oil is also reduced, and the energy-saving and environment-friendly requirements advocated by the state are realized.
4) After the invention is implemented, the service life of the lubricated equipment is substantially prolonged, the maintenance cost is saved, the equipment accident time is reduced, the production operation rate is improved, and the major problems are solved by a small method. According to the using effect, the lubricating grease can not only meet the use requirements of equipment with special requirements on grease supply amount of dry oil in our factory, but also be popularized in the technical field of metallurgy, and can be widely used for various equipment needing full lubricating operation.
Drawings
Fig. 1 is a working principle diagram of the environment-friendly high-flow grease supply device (when a two-position four-way electromagnetic directional valve A is electrified).
FIG. 2 is an action state diagram of the start-up of the environment-friendly large-flow grease supply device after the motor is stopped and delayed for 3-5 h.
Fig. 3 is a working schematic diagram of the environment-friendly high-flow grease supply device (when the two-position four-way electromagnetic directional valve B is electrified).
Fig. 4 is a working state diagram of the reversing valve set and the large-flow pump body when the two-position four-way electromagnetic reversing valve A is powered on.
Fig. 5 is a working state diagram of the reversing valve set and the large-flow pump body when the two-position four-way electromagnetic reversing valve B is electrified.
In the figure: the hydraulic control system comprises a 1-pressure relay, a 2-filter, a 3-pressure reducing valve, a 4-two-position four-way electromagnetic directional valve, a 5-flow control valve, a 6-two-position five-way hydraulic control directional valve, a 7-large-flow pump body, an 8-overflow valve, a 9-first-stage plunger, a 10-second-stage plunger and a 11-third-stage plunger.
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
referring to fig. 1-5, an environment-friendly large-flow grease supply device for dry oil comprises a dry oil supply system and a pressure reducing valve 3; the dry oil supply system is connected with an oil inlet P of the two-position four-way electromagnetic reversing valve 4 through a pressure reducing valve 3 through an oil way, an oil outlet A of the two-position four-way electromagnetic reversing valve 4 is connected with an oil inlet P of the two-position four-way electromagnetic reversing valve 6, an oil outlet B of the two-position four-way electromagnetic reversing valve 4 is connected with an oil inlet T of the two-position five-way hydraulic control reversing valve 6, two oil outlets A, B on the two-position five-way hydraulic control reversing valve 6 are respectively connected with two cavities of the large-flow pump body 7, and a terminal oil outlet P on the two-position five-way hydraulic control reversing valve 61The oil way is connected with field equipment; the pressure relay 1 detects the pressure in the oil path of the device and controls the electricity of the dry oil feeding system through circuit connectionThe machine stops, the two-position four-way electromagnetic directional valve 4 is reversed, and the time relay is connected with and controls the starting of a motor of the dry oil supply system.
The invention relies on the original dry oil supply system of the equipment, a pressure relay 1 is arranged on an output pipeline of an oil pump of the dry oil supply system, the total pressure of an oil circuit in the whole system is detected, the power failure of an oil pump motor is controlled, and meanwhile, a two-position four-way electromagnetic directional valve 4 is controlled for delayed reversing. The oil pump motor of the dry oil supply system is controlled by the time relay to be started after being stopped for a period of time (set time value).
An overflow valve 8, a filter 2 and a pressure reducing valve 3 are also arranged on an oil pump output oil way of the original dry oil feeding system.
A method for supplying oil and lubricating field equipment by adopting an environment-friendly large-flow grease supply device with dry oil comprises the following steps:
1) referring to fig. 1, a of a two-position four-way electromagnetic directional valve 4 is powered on, an electromagnetic valve moves leftwards for reversing, grease output by a dry oil pump in a dry oil supply system passes through a pressure reducing valve 3 and then is conveyed to a two-position five-way hydraulic control directional valve 6 after passing through a port P of the two-position four-way electromagnetic directional valve 4 to a port A, the two-position five-way hydraulic control directional valve is pushed to move leftwards through a hydraulic control port B, the dry oil enters a cavity on one side of an externally-hung large-flow pump body 7 through an external oil pipe from the port P to the port B of the two-position five-way hydraulic control directional valve 6, pressure difference is generated on two sides of a plunger after oil is fed into the cavity on one side of the large-flow pump body 7, the grease at an oil feeding end pushes1Pushing to the field device;
as shown in fig. 4, the two-position four-way electromagnetic directional valve 4A is in an electrified working state: it can be seen that after the plunger in the two-position four-way electromagnetic directional valve 4 moves downwards, the grease enters the upper end (port P) of the two-position five-way hydraulic control directional valve 6, the two-position five-way hydraulic control directional valve (the first-stage plunger 9) moves downwards, the grease pushes the plunger (the second-stage plunger 10) in the two-position five-way hydraulic control directional valve 6 to move downwards and enter the upper end of the large-flow pump body 7, and finally, after the plunger (the third-stage plunger 11) in the large-flow pump body 7 is pushed to move downwards, the grease at the lower part of the third-stage plunger 11 is pushed to passOil outlet P of reversing valve 61And the oil is discharged and sent to field equipment, so that the aim of lubricating the equipment at a large flow is fulfilled.
2) When the plunger of the large-flow pump body 7 is pushed to the limit of the other side, the pressure of the whole system is increased, after the rated pressure of the pressure relay 1 is reached, the pressure relay 1 acts, the motor stops running, and the valve 4B of the two-position four-way electromagnetic reversing valve is electrified for reversing after about 5 seconds of delay;
3) when the time relay starts to count down, the motor is restarted when 3-5 hours are reached, after the last action is finished, the two-position four-way electromagnetic directional valve 4B is powered on, the electromagnetic directional valve is moved rightwards for reversing, grease from a dry oil supply system is conveyed to the two-position five-way hydraulic control directional valve 6 after passing through the port 4P of the two-position four-way electromagnetic directional valve to the port B, the two-position five-way hydraulic control directional valve is pushed to move rightwards through the hydraulic control port a, the grease passes through the port T of the two-position five-way hydraulic control directional valve 6 to the port A, and enters the cavity on the other side of the large-flow pump body 7 through an external oil; after oil is fed into the cavity on the other side of the large-flow pump body 7, pressure difference is generated on two sides of the plunger, grease at the oil feeding end pushes the plunger to move to the side with small pressure, and the grease in the cavity on the side with small pressure passes through the terminal oil outlet P on the two-position five-way hydraulic control reversing valve 61Pushed to the field device.
4) When the plunger is pushed to the limit of one side, the pressure of the whole system is increased, after the rated pressure of the pressure relay 1 is reached, the pressure relay 1 acts, the motor stops running, and the two-position four-way electromagnetic reversing valve 4A is powered on for reversing after about 5 seconds of delay.
As shown in fig. 5, the two-position four-way electromagnetic directional valve 4B is in an electrified working state: it can be seen that after the plunger in the two-position four-way electromagnetic directional valve 4 moves upwards, grease enters the lower end (T port) of the two-position five-way hydraulic control directional valve 6, the two-position five-way hydraulic control directional valve 6 (the first-stage plunger 9) moves upwards, the grease pushes the plunger (the second-stage plunger 10) in the two-position five-way hydraulic control directional valve 6 to move upwards and simultaneously enters the lower end of the large-flow pump body 7, and finally after the plunger (the third-stage plunger 11) in the large-flow pump body 7 is pushed to move upwards, the grease on the upper portion of the third-stage plunger 11 is pushed to pass through the oil outlet P1And the oil is discharged and sent to field equipment, so that the aim of lubricating the equipment at a large flow is fulfilled.
5) The time relay starts to count down, and when the time reaches 3-5 hours, the motor is started again, so that the reciprocating circular motion of the large-flow pump body is achieved.
And a flow control valve 5 is also arranged on an oil way of the reversing valve group to the equipment and used for adjusting the flow of the dry oil.
Claims (1)
1. An environment-friendly high-flow grease supply device for dry oil comprises a dry oil supply system and a pressure reducing valve; the dry oil supply system is connected with an oil inlet P of the two-position four-way electromagnetic reversing valve through a pressure reducing valve through an oil way, an oil outlet A of the two-position four-way electromagnetic reversing valve is connected with the oil inlet P of the two-position five-way hydraulic control reversing valve, an oil outlet B of the two-position four-way electromagnetic reversing valve is connected with an oil inlet T of the two-position five-way hydraulic control reversing valve, two oil outlets A, B on the two-position five-way hydraulic control reversing valve are respectively connected with two cavities of the large-flow pump body, and a terminal oil outlet P on the two-position five-way hydraulic control reversing valve1The oil way is connected with field equipment; the pressure relay detects the pressure in an oil path of the device, and controls the motor of the dry oil supply system to stop and the two-position four-way electromagnetic directional valve to change direction through circuit connection, and the time relay controls the motor of the dry oil supply system to start; the method for supplying oil and lubricating the field equipment by the environment-friendly high-flow grease supply device with the dry oil comprises the following specific steps:
1) a of the two-position four-way electromagnetic reversing valve is electrified, the electromagnetic valve moves leftwards for reversing, grease output by a dry oil pump in a dry oil feeding system passes through a pressure reducing valve, passes through a port P of the two-position four-way electromagnetic reversing valve to a port A and then is conveyed to the two-position five-way hydraulic control reversing valve, the two-position five-way hydraulic control reversing valve is pushed to move leftwards through a hydraulic control port B, the dry oil enters a cavity on one side of the externally-hung large-flow pump body through an external oil pipe from the port P to the port B of the two-position five-way hydraulic control reversing valve, pressure difference can be generated on two sides of a plunger after oil enters the cavity on one sideThe grease in the cavity at one side with small pressure flows through a terminal oil outlet P on the two-position five-way hydraulic control reversing valve1Pushing to the field device;
2) when the plunger of the large-flow pump body is pushed to the limit of the other side, the pressure of the whole system is increased, after the rated pressure of the pressure relay is reached, the pressure relay acts, the motor stops running, and the two-position four-way electromagnetic reversing valve B is powered on for reversing after about 5 seconds of delay;
3) the time relay starts to count down, when 3-5 hours are reached, the motor is restarted, after the last action is finished, the two-position four-way electromagnetic directional valve B is electrified, the electromagnetic directional valve is moved rightwards for reversing, grease from a dry oil supply system is conveyed to the two-position five-way hydraulic control directional valve after passing through a port P of the two-position four-way electromagnetic directional valve to a port B, the two-position five-way hydraulic control directional valve is pushed to move rightwards through a hydraulic control port a, and the grease enters the cavity on the other side of the large-flow pump body through an external oil pipe from a port T to a port A of the two-position five-way hydraulic; after oil is fed into the cavity on the other side of the large-flow pump body, pressure difference is generated on two sides of the plunger, grease at the oil inlet end pushes the plunger to move to the side with small pressure, and the grease in the cavity on the side with small pressure passes through the terminal oil outlet P on the two-position five-way hydraulic control reversing valve1Pushing to the field device;
4) when the plunger is pushed to the limit of one side, the pressure of the whole system is increased, after the rated pressure of the pressure relay is reached, the pressure relay acts, the motor stops running, and the two-position four-way electromagnetic reversing valve A is electrified for reversing after about 5 seconds of delay;
5) the time relay starts to count down, and when the time reaches 3-5 hours, the motor is started again, so that the reciprocating circular motion of the large-flow pump body is achieved.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710196270.8A CN108662417B (en) | 2017-03-29 | 2017-03-29 | Environment-friendly high-flow grease supply device and method for dry oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710196270.8A CN108662417B (en) | 2017-03-29 | 2017-03-29 | Environment-friendly high-flow grease supply device and method for dry oil |
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| CN108662417A CN108662417A (en) | 2018-10-16 |
| CN108662417B true CN108662417B (en) | 2020-01-07 |
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Families Citing this family (1)
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| CN109854625A (en) * | 2018-11-18 | 2019-06-07 | 中国电建集团铁路建设有限公司 | A kind of shield automatic adjustment main shaft seals rouge injected system |
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| CN103470565A (en) * | 2013-09-24 | 2013-12-25 | 徐州重型机械有限公司 | Rotary cushion valve and rotary system for crane |
| CN204828114U (en) * | 2015-08-13 | 2015-12-02 | 北京中金泰达电液科技有限公司 | Your five -way switching -over valve that surges |
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|---|---|---|---|---|
| US4097200A (en) * | 1977-01-03 | 1978-06-27 | Sundstrand Corporation | Self-pressurization system for gearboxes and the like |
| DE3112927A1 (en) * | 1981-03-31 | 1982-10-07 | Joseph Vögele AG, 6800 Mannheim | Distributing device for double circuit central lubricating system |
| CN1141396A (en) * | 1995-04-25 | 1997-01-29 | 速睦喜股份有限公司 | Driving loop with fluid presure as power device |
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| CN201954235U (en) * | 2011-04-21 | 2011-08-31 | 钱玉芳 | Glycerol lubricating device |
| CN202833378U (en) * | 2012-08-20 | 2013-03-27 | 东莞市神煜机械有限公司 | Electro-hydraulic directional control valve |
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| CN108662417A (en) | 2018-10-16 |
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