The specific embodiment
With reference to the accompanying drawings, the present invention is described in detail.
Automatic lubrication mechanism for conveyor chain provided by the invention comprises gas-liquid combination cylinder 1, sensor 2, electromagnetic valve 3, gas circuit 4 and pipeline 12, as shown in Figure 1.
Wherein, as shown in Figure 2, gas-liquid combination cylinder 1 comprises cylinder body 5, cylinder cap 6, piston 7 and return spare 8.Comprise air extractor vent 9 on the cylinder cap 6.Under the preferable case, the air extractor vent 9 fitted around sealing members 14 at cylinder cap 6 are used for the inflatable chamber of cylinder body is sealed.Described sealing member 14 can be selected various known sealing members for use, as oil sealing apron, rubbery flat gasket, O RunddichtringO etc., is preferably the oil sealing apron.Comprise on the cylinder body 5 and the partially communicating fuel feed hole 10 of inner chamber of cylinder block and the oil outlet 11 of assembling return spare 8 that the size of fuel feed hole 10 and oil outlet 11 can be decided as required.The oil outlet 11 of gas-liquid combination cylinder 1 links to each other with pipeline 12, and the internal diameter of pipeline 12 should be as far as possible little, so that fluid forms the effect of spraying torrent, generally speaking, the internal diameter of pipeline 12 is the 1-6 millimeter, is preferably the 1-4 millimeter, more preferably 2 millimeters.Cylinder body 5 and cylinder cap 6 be by various known mode mechanical connections, as be threaded, jackscrew is fastening etc., preferably connect by screw thread fit.
Piston 7 is assemblied in the cylinder body 5.Under the preferable case, between the inwall of piston 7 and cylinder body 5, be equipped with one or more seal rings 13, be used to prevent that gas leak phenomenon from taking place, to guarantee required draught head in the cylinder body 5.Described seal ring 13 can be various known seal rings, as O RunddichtringO, square co-axial seals, QY RunddichtringO etc., is preferably the O RunddichtringO.
Return spare 8 is assemblied between the end and piston 7 away from cylinder cap 6 in the cylinder body 5.Preferably, described return spare 8 is a spring.When entering cylinder body 5 gas inside pressure by the air extractor vent on the cylinder cap 69 and increase, piston 7 will be towards the direction motion away from cylinder cap 6 under the effect of air pressure, so that cylinder body 5 in-to-in fluid are extruded by oil outlet 11, makes length of spring compressed simultaneously.When entering cylinder body 5 gas inside pressure by the air extractor vent on the cylinder cap 69 and reduce, spring will utilize the elastically-deformable elastic force of self-recovery to promote piston 7 towards the motion of cylinder cap 6 directions, so that piston 7 resets.Therefore, the difference of pressure sum between piston 7 both sides that should cause of the initial compressive force after described spring requires to assemble greater than, the friction force between piston 7 and cylinder body 5 inwalls and by draught head.Described spring can be selected various known springs for use, as hot rolling stage clip, cold coiling stage clip etc., is preferably the cold coiling stage clip.
Under the preferable case, described gas-liquid combination cylinder 1 also comprises stroke regulating lever 15.Described stroke regulating lever 15 is assemblied in the end away from cylinder cap 6 of cylinder body 5, and return spare 8 is sleeved on being positioned on the cylinder body 5 in-to-ins parts of stroke regulating lever 15, and the end of the close cylinder cap 6 of stroke regulating lever 15 leans on piston 7.Under the preferable case, between stroke regulating lever 15 and the cylinder body 5 by being threaded.The size of stroke regulating lever 15 can be decided as required.Stroke regulating lever 15 is used for the movement travel of control plunger 7, and the fluid amount that oil outlet 11 extrudes is passed through in the effect that therefore can be controlled at piston 7 down.That is, when stroke regulating lever 15 precessions, can reduce oil pump capacity, when stroke regulating lever 15 screws out, can increase oil pump capacity, thereby can control exactly the feed amount of lubricant according to actual needs.
Under the preferable case, between the inwall of stroke regulating lever 15 and cylinder body 5, be equipped with seal ring 16 away from the end of cylinder cap 6, be used for the oil pocket of cylinder body is sealed at cylinder body 5.Described seal ring 16 can be selected various known seal rings for use, as QY RunddichtringO, Yx RunddichtringO, A RunddichtringO etc., is preferably the QY RunddichtringO.
Under the preferable case, described gas-liquid combination cylinder 1 also comprises contiguous block 17 and supporting seat 18, is used for fixing and supports described stroke regulating lever 15.Contiguous block 17 is assemblied in an end of the assembling stroke regulating lever 15 of cylinder body 5, and supporting seat 18 is assemblied on the contiguous block 17.Under the preferable case, between stroke regulating lever 15 and the contiguous block 17 by being threaded.Supporting seat 18, contiguous block 17 and cylinder body 5 can preferably connect by screw by various known mode mechanical connections.
Sensor 2 is positioned at the top of the some rollers 19 on the conveyer chain, and generally speaking, the detecting head of sensor 2 is positioned at 8-35 millimeter place, roller 19 top, and under the preferable case, the detecting head of sensor 2 is positioned at 15-25 millimeter place, roller 19 top.Described sensor 2 can be preferably opto-electronic pickup for various known sensors.
Electromagnetic valve 3 links to each other with sensor 2.Under the preferable case, between electromagnetic valve 3 and sensor 2, be connected switch 20, be used to control the opening and closing of automatic lubrication mechanism.Described switch 20 can be preferably air switch for various known switches.The turnover gas common interface of electromagnetic valve 3 links to each other with the air extractor vent 9 of gas-liquid combination cylinder 1 by gas circuit 4.Described electromagnetic valve 3 can be preferably two-position three way magnetic valve for various known electromagnetic valves.
Under the preferable case, described automatic lubrication mechanism for conveyor chain also comprises source of the gas 21.Source of the gas 21 is connected with the intake interface of electromagnetic valve 3.Under the preferable case, described automatic lubrication mechanism for conveyor chain also comprises pipeline 25 and feed apparatus 22.Feed apparatus 22 is connected with the fuel feed hole 10 of gas-liquid combination cylinder 1 by pipeline 25.
Under the preferable case, be connected spraying nipple 24, be used for fluid is sprayed onto roller 19 equably at the end of the pipeline 12 that is communicated with the oil outlet 11 of gas-liquid combination cylinder 1.Generally speaking, spraying nipple 24 is positioned at 2-18 millimeter place, roller 19 top, and under the preferable case, spraying nipple 24 is positioned at 5-10 millimeter place, roller 19 top.
Under the preferable case, on described pipeline 12 and pipeline 25, check valve 23 is installed respectively, is used to control the fluid nonreturn flow.That is, being installed on the pipeline 25 is check valve 23 between the fuel feed hole 10 of feed apparatus 22 and gas-liquid combination cylinder 1, and being used to control fluid can only flow to fuel feed hole 10 from feed apparatus 22.Being installed on the pipeline 12 is check valve 23 between the oil outlet 11 of spraying nipple 24 and gas-liquid combination cylinder 1, and being used to control fluid can only flow to spraying nipple 24 from oil outlet 11.Described check valve 23 can be selected various known check valves for use, but owing to require the pressure of the unidirectional unlatching of check valve should be not excessive, can't make one-way valve opens with the draught head that prevents to form, and therefore preferably selects response pressure adjustable type check valve for use.
Under the preferable case, automatic lubrication mechanism for conveyor chain provided by the invention also comprises automatic timer, and this automatic timer links to each other with sensor 2, is used for regularly closing this automatic lubrication mechanism.The time that described timer device limited equals the running velocity of the length of whole conveyer chain divided by conveyer chain.When described automatic lubrication mechanism starts, close switch 20, and this timer device opened, this moment, sensor 2 chargedly began to carry out work; When running to the time that sets, the timer device SELF CL, sensor 2 outages, thus automatic lubrication mechanism is out of service immediately.
When automatic lubrication mechanism for conveyor chain provided by the invention is installed, under the preferable case, should guarantee that the detecting head of sensor 2 and the installation site of spraying nipple 24 differ an integer complete chain pitch number, and should guarantee the leak tightness of each joint of cylinder body and entire mechanism.
Below with reference to Fig. 1, be described utilizing automatic lubrication mechanism for conveyor chain provided by the invention to carry out the lubricated process of conveyer chain.
When sensor 2 sensed roller 19 by the time, electromagnetic valve 3 is charged to begin action, and source of the gas 21 is communicated with gas circuit 4, ventilates to the right chamber of gas-liquid combination cylinder 1 to pass through gas circuit 4.Under the effect of air pressure, the piston 7 in the gas-liquid combination cylinder 1 is to left movement, and the air pressure in the gas-liquid combination cylinder 1 left chamber increases, and this moment, the check valve 23 at oil outlet 11 places was got through by unidirectional, so that a part of gas in the gas-liquid combination cylinder 1 left chamber is discharged by pipeline 12.After roller 19 passed through, sensor 2 inductions were less than roller, and then electromagnetic valve 3 resets, and this moment, gas circuit 4 was not communicated with source of the gas 21, and was communicated with atmosphere.Because the right chamber of gas-liquid combination cylinder 1 communicates with atmosphere by gas circuit 4, therefore the gaseous tension in the right chamber reduces, and is returned to initial position under the effect of the piston 7 return spare 8 in cylinder in the gas-liquid combination cylinder 1 simultaneously.Gas volume increase in this moment gas-liquid combination cylinder 1 left chamber and pressure reduces, therefore the air pressure in the chamber, a cylinder body left side will and external pressure between form draught head, cause the check valve 23 at oil outlet 11 places to be closed, and the check valve 23 at fuel feed hole 10 places is opened by unidirectional, thereby the fluid in the feed apparatus 22 will be fed in the left chamber of gas-liquid combination cylinder 1 by pipeline 25.Air pressure in the fluid amount that enters gas-liquid combination cylinder 1 left chamber makes left chamber goes back up to barometric pressure when almost equal, and the check valve 23 at oil inlet 10 places is closed.So far, the action first time after whole automatic lubrication mechanism has just installed, promptly the exhaust oil-absorbing process is finished.
Be the process of automatic lubrication mechanism oil spout below: when sensor 2 sensed again roller 19 by the time, electromagnetic valve 3 begins action with charged, and source of the gas 21 is communicated with gas circuit 4, ventilates to the right chamber of gas-liquid combination cylinder 1 to pass through gas circuit 4.Under the effect of air pressure, piston 7 beginnings in the gas-liquid combination cylinder 1 are to left movement, air pressure in the gas-liquid combination cylinder 1 left chamber increases, and this moment, the check valve 23 at oil outlet 11 places was got through by unidirectional, so that the fluid in the gas-liquid combination cylinder 1 left chamber is discharged to spraying nipple 24 places by pipeline 12.Because the detecting head of sensor 2 and the installation site of spraying nipple 24 just in time differ an integer complete chain pitch number, therefore below spraying nipple 24, also just in time there is roller 19 to pass through this moment, thereby fluid can be ejected on the roller, to be lubricated.After roller 19 passed through, sensor 2 inductions were less than roller, and then electromagnetic valve 3 resets, and this moment, gas circuit 4 was not communicated with source of the gas 21, and was communicated with atmosphere.Because the right chamber of gas-liquid combination cylinder 1 communicates with atmosphere by gas circuit 4, therefore the gaseous tension in the right chamber reduces, and is returned to initial position under the effect of the piston 7 return spare 8 in cylinder in the gas-liquid combination cylinder 1 simultaneously.Owing to part fluid be discharged from make pressure reduce in the gas-liquid combination cylinder 1 left chamber this moment, therefore form draught head between the air pressure in chamber, a cylinder body left side and the external pressure, cause the check valve 23 at oil outlet 11 places to be closed, and the check valve 23 at oil-feed 10 places is opened by unidirectional under atmospheric effect, thereby the fluid in the feed apparatus 22 will be fed in the left chamber of gas-liquid combination cylinder 1 by pipeline 25.Fluid amount in entering gas-liquid combination cylinder 1 left chamber makes the air pressure in the chamber, a cylinder body left side go back up to barometric pressure when almost equal, and the check valve 23 at oil inlet 10 places will be closed.So far, whole automatic lubrication mechanism is finished an oil extraction oil-absorbing process.When sensor 2 sensed again roller 19 by the time, automatic lubrication mechanism will repeat above the action.
Need to prove that at last the driving gas circuit of described gas circuit 4 in the automatic lubrication mechanism of the present invention and 9 formed driven plunger 7 motions of the air extractor vent of gas-liquid combination cylinder 1 also can directly be replaced with cylinder.In this case, only the piston rod end of cylinder need be connected with piston 7, with the turnover gas interface on the electromagnetic valve 3 respectively with the corresponding connection of turnover tracheae of cylinder, get final product the motion of driven plunger 7.