CN209621704U - A kind of inserted disc - Google Patents

Abstract

The utility model discloses a kind of inserted disc, the disc includes the disc ontology of polytetrafluoroethylene (PTFE)；The outer surface of the disc ontology is circumferentially equipped with annular groove；Copper ring is inlaid in the annular groove；The depth of the annular groove is less than the height of copper ring.The inner surface of the disc ontology is circumferentially equipped with oil storage tank, and the oil storage tank is the oil storage tank of double concave type.The inserted disc of the utility model design, it is that copper ring is embedded in polytetrafluoroethylene (PTFE) groove ring, the weight of inserted disc is also increased simultaneously, increase rotation revolution, to eliminate the presence of brass powder, enough lubricating oil can be made to take on axis, lubricate pump shaft and bearing shell (or sliding bearing) abundant, lubrication temperature is reduced, to extend the service life of pump.

Description

A kind of inserted disc

Technical field

The utility model relates to lubricating device fields, and in particular to a kind of inserted disc.

Background technique

Disc is also referred to as ring oiler, is the accessory of bearing, is determined by the upper oil ring locating slot of bearing shell Position, the effect of the slot are that disc is avoided to move along the direction of axis.Disc lower part is immersed in bearing seat oil tank, when axis revolves When turning, drag force rotates with it disc, and the oil in bearing housing is taken up, and is splashed to the surrounding of bearing shell, has reached lubrication Effect.Disc also has the function of reducing a watt mild protection bearing shell simultaneously.Disc is often manufactured by die case zinc or brass end, Ring diameter is less than twice of journal diameter.Disc is set on axis or axle journal, the disc upper half by axis top half groove Its position is fixed, effect is that disc is prevented to be axially moveable.The lower half portion of disc is dipped among grease-box.When axis revolves When turning, drag drives disc rotation, and lubricating oil during rotation, is brought to bearing (bearing shell) by disc.

In the installation of centrifugal multistage pump multiple centrifugal pump, in order to guarantee the lubrication of bearing shell (bearing), prevent brass powder immerse bearing shell (or Bearing) in, fueller is designed, guarantees the cleaning lubricating oil of bearing shell (or bearing) grease chamber being endlessly transported to bearing shell Between (or sliding bearing) and pump shaft, if for shortage of oil or having brass powder immersion, pump shaft and bearing shell (sliding axle are easily caused Hold) abrasion aggravation, or even damage.

The P6002/1.2 multistage pump of certain the 4th combined workshop's MTBE device of petro-chemical corporation operation, using sliding bearing.Because of copper Matter disc grinds the defect in design, and serious wear in operation leads to lubricant pollution blackening, and the bearing shell cycle of operation shortens.Have Shi Yunhang needed termination of pumping cleaning, repairs, more oil change, and seriously affected the normal production of MTBE device less than 2-3 weeks.

Utility model content

In view of the above technology the problem of, the utility model provide a kind of inserted disc, and main purpose is to provide one Kind structure is simple, reduces pump lubricating oil temperature, mitigates bearing shell (or bearing) abrasion, extends the pump shaft service life.

The purpose of this utility model is achieved through the following technical solutions: a kind of inserted disc, the disc packet Include the disc ontology of polytetrafluoroethylene (PTFE)；The outer surface of the disc ontology is circumferentially equipped with annular groove；The annular Copper ring is inlaid in groove；The depth of the annular groove is less than the height of copper ring.

Further, the rectangular in cross-section of the annular groove.

Further, the inner surface of the disc ontology is circumferentially equipped with oil storage tank.

Further, the oil storage tank is the oil storage tank of double concave type.

The specific size of the disc ontology and the copper ring inlayed is matched from the bearing shell (or bearing) of different pumps.Often The oil slinger size of platform machine original not sample, in different size, weight is also different.

The size of the size of diameter is identical as existing disc outside the disc ontology, and width can be more existing It is wide a bit, disc ontology inner face diameter can more existing dot, finally making inserted disc, (polytetrafluoroethylene (PTFE) gets rid of oil Ring body and copper ring) weight and the weight of existing disc be consistent, keep its linear velocity equal, coefficient of friction is consistent.Edge After embedding oil slinger as former brass disc weight.Band oil mass is same.

The utility model is processed into concave circle for the disc ontology of polytetrafluoroethylene (PTFE), then inlays copper ring, and outer ring is set Convex shape is counted, interior sub- design double concave type oil storage tank is mounted on bearing shell (or sliding bearing) the lubrication assembly of multistage pump, preferably Give bearing shell (or bearing) fuel feeding.

Copper ring is embedded on tetrafluoroethene groove ring, copper ring outer diameter forms convex circle slightly larger than tetrafluoroethene, interior Surface processes double concave type oil storage tank circle, as inserted disc.

The utility model is analyzed the dirty reason of its lubricating oil, is proposed to disc structure by observation pump operation rule It is transformed, the defect of copper disc is solved from source, it is ensured that disc extends multistage pump fortune without abrasion, lubricating oil cleaning The row period extends the service life of equipment.

The inserted disc of the utility model is to increase fuel delivery, and devising outer surface is convex shape, and inner surface is concave-concave Type shape meets pump shaft and bearing shell (or sliding bearing) lubrication, reduces lubricating oil temperature.

Disc ontology described in the utility model is mounted in centrifugal multistage pump multiple centrifugal pump, and work is simple, when working operation, pump While axis rotation drives disc to follow rotation, the adhesion strength by disc and lubricating oil takes lubricating oil on pump shaft to, by It is changed to inserted disc in disc, to eliminate brass powder.If using common disc, since brass disc rubs It wipes and generates brass powder, fall into tank bottoms, because multistage pump design bearing housing lubricating oil bath is too small, oil sump bottom and disc The hypotelorism of lower end causes disc when operation that the brass powder being immersed in bearing housing is stirred to come, is splashed on axis, into It is internal to enter bearing shell (or bearing), to accelerate bearing shell (or bearing) abrasion, or even damage.

The positive progress of the utility model, effect are that disc provided by the utility model has the advantage that this reality It is that copper ring is embedded in polytetrafluoroethylene (PTFE) groove ring, while also increasing inserted get rid of with the inserted disc of new design The weight of oil ring, increasing rotation revolution can be such that enough lubricating oil takes on axis, make to eliminate the presence of brass powder Pump shaft and bearing shell (or sliding bearing) lubrication sufficiently, reduce lubrication temperature, to extend the service life of pump.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the main view of the inserted disc of the utility model.

Fig. 2 is the A-A the schematic diagram of the section structure of the inserted disc of the utility model.

Fig. 3 is the relational graph of coefficient of friction and vertical load.

In figure: 1, disc ontology, 2, copper ring, 3, oil storage tank.

Specific embodiment

Following nonlimiting examples can make those skilled in the art that the utility model be more fully understood, but The utility model is not limited in any way.

Embodiment

As shown in Figure 1, 2, a kind of inserted disc, the disc include the disc ontology 1 of polytetrafluoroethylene (PTFE)；Institute The outer surface for stating disc ontology is circumferentially equipped with annular groove；Copper ring 2 is inlaid in the annular groove；The annular is recessed The depth of slot is less than the height of copper ring 2.The rectangular in cross-section of the annular groove.The inner surface of the disc ontology is circumferentially It is equipped with oil storage tank.The oil storage tank is the oil storage tank 3 of double concave type.The width of the disc ontology 1 is 14.5mm, and outside is straight Diameter is 115mm, and inner face diameter is 103mm；The annular groove of disc ontology 1 and the width of copper ring 2 are 9.5mm, disc Edge Distance of the edge of ontology 1 away from nearest annular groove is 2.5mm；The diameter of the annular groove is 109mm, and depth is 3mm；The outside diameter of the copper ring 2 is 118mm, and it is highly 4.5mm that inner face diameter, which is 109mm, and the copper ring 2 is more recessed than annular The high 1.5mm of slot；The oil storage tank 3 is the oil storage tank 3 of double concave type, i.e., 2 parallel concave oil storage tanks 3, each concave oil storage tank 3 For annular groove, section is rectangle, and the diameter of each annular groove of two oil storage tanks 3 is 106 mm, depth 1.5mm, Width is 3mm, and the edge of disc ontology 1 is 2mm away from the Edge Distance of nearest 3 annular groove of oil storage tank.Disc ontology 1 The annular groove of outer surface is of same size with copper ring 2, first adds the disc ontology 1 of polytetrafluoroethylene (PTFE) during installation Heat, then copper ring 2 is mounted to heat polytetrafluoroethylene (PTFE) disc ontology 1 in be assembled into inserted disc, this is inserted to get rid of It is convex shape that oil ring, which has outer surface, and inner surface is the structure of double concave type shape.

Two P6001/1.2 multistage pumps that certain the 4th combined workshop's MTBE device of petro-chemical corporation is run in the present embodiment, this Two multistage pumps are the model DYJ135-65*4 type multistage pump that China Tech pump industry in Shenyang is voluntarily developed, and are 4 grades of both ends branch Hold centrifugal multistage pump multiple centrifugal pump.Lubricating oil model used at present are as follows: LAN32.Through operation in 3 months on multistage pump P6001/1.2, make Obvious with the bearing shell damage of unmodified copper disc (disc of the prior art), tungsten layer gold large area is peeled off, and uses this Lower watt of the inserted disc anti-drive end of utility model has no apparent damage, and bearing shell has no apparent damage, and effect is fine.Lubricating oil Cleaning, tank temperature is normal, extends service life of equipment, reduces the labor intensity of worker, achieves the desired results.

The utility model analyzes the dirty reason of its lubricating oil, and then analyze and generate bearing shell by observation pump operation rule The reason of abrasion, is analyzed, as follows:

Disc is also referred to as ring oiler, is the accessory of bearing, is determined by the upper oil ring locating slot of bearing shell Position, the effect of the slot are that disc is avoided to move along the direction of axis.Disc lower part is immersed in bearing seat oil tank, when axis revolves When turning, drag force rotates with it disc, and the oil in bearing housing is taken up, and is splashed to the surrounding of bearing shell, has reached lubrication Effect.Disc also has the function of reducing a watt mild protection bearing shell simultaneously.Disc is often manufactured by die case zinc or brass end, Ring diameter is less than twice of journal diameter.Disc is set on axis or axle journal, the disc upper half by axis top half groove Its position is fixed, effect is that disc is prevented to be axially moveable.The lower half portion of disc is dipped among grease-box.When axis revolves When turning, drag drives disc rotation, and lubricating oil during rotation, is brought to bearing (bearing shell) by disc.

Disc surface shows numerous micro-bulges (outer surface) and trench (inner surface) especially, and this rough surface rubs to machinery Wiping, wearing and lubricating has larger impact, and when piece surface contact, real contact area is more much smaller than apparent area, stress It extremely concentrates, under high load effect, the micro-bulge of piece surface interacts, and leads to that adhesion mill occurs between disc axle journal Damage.By adhesive wear law it is found that the abrasion loss of material is directly proportional to load, it increases then metal transfer amount and increases.Work as entrance When the sharp wear stage, abrasion is sharply increased, and metal transfer amount increases, and disc is gone out after going to a certain degree with flakey abrasive dust It now combines in oil, deposit separation constantly carries out, so that lubricating oil seriously be polluted.Due to the presence of copper powder grain in lubricating oil, Abrasive material and plough bits abrasion are exacerbated again, accelerate the abrasion of bearing shell and disc.

The 4th combined workshop MTBE of certain petro-chemical corporation is installed in the operational process that goes into operation in June, 2014, two multistage pumps Occurs bearing shell damage phenomenon for P6002/1.2 more times.This four multistage pumps be 4 grades of two supports centrifugal multistage pump multiple centrifugal pumps, model: DYJ135-65*4 type multistage pump.The pump both ends are using removable metal as radial support, and bearing shell is positioned by balancing drum, rolling Dynamic bearing auxiliary positioning pumps sliding bearing part without subsidiary petrol station, brings lubricating oil into bearing shell lubrication assistant by disc.It should The disc material that the former design of pump uses is by brass and kirsite PH62, and this alloy material intensity is big, hardness is big, chemically-resistant Corrosion is strong but wearability is general, a large amount of brass powders is also easy to produce after abrasion, copper powder is fallen into lubricating oil, by lubricant pollution. Graininess impurity is present in oil, accelerates the abrasion of disc and bearing shell, causes vicious circle, and disc is made to wear mistake quickly Effect.In operation, disc and axis friction and the friction between axis on watt slot two sides produce brass powder to pump simultaneously End, powder fall into tank bottoms.Because design upper bearing (metal) cabinet lubricating oil bath it is too small, between oil sump bottom and disc lower end away from It is close from excessively, cause disc when operation that the brass powder of immersion is stirred to come, be splashed on axis, into bearing shell inside to accelerate Bearing bush abrasion.Analyze bearing shell wear reason mainly as caused by metal powder, and metal powder be disc in operation It is generated with the positioning groove abrasion on axis, bearing shell.By the understanding and analysis to babbitt block, tungsten fitting has anti-attrition characteristic, is It is suitble to the axis relative to soft to rotate material extensively at present, compared with other materials, there is preferable practicability.It was running The friction of Cheng Dangzhong, copper powders and babbitt block can cause the abrasion of babbitt block, and as abrasion aggravates, more tungsten layer gold are peeled off, Bearing bush abrasion is increasingly severe.Therefore, in operational process, the friction of copper powders and babbitt block can cause the mill of babbitt block Damage, as abrasion aggravates, more tungsten layer gold are peeled off, and bearing bush abrasion is increasingly severe.

Generate the original of brass particulate powder in the process of running by the working principle of analysis disc, brass disc Cause, pollution condition of the brass powder to grease and the abrasion condition to bearing shell (bearing)；And brass disc is run in pump Present in defect, design trendy inserted disc and substitute brass disc, above-mentioned phenomenon can be eliminated.Therefore, this is practical new Type proposes improvement project according to above-mentioned analysis, and the design of inserted disc is according to the abrasion condition between disc and bearing shell Analysis, the abrasion of disc inner ring and the left and right sides wrap up one layer of polytetrafluoroethylene (PTFE) material in former brass material outer surface, thus Eliminate copper powders.

Inserted disc application material is polytetrafluoroethylene (PTFE).Polytetrafluoroethylene (PTFE) has excellent chemical stability, has very High heat resistance, cold resistance, it is fabulous self-lubricating material, but mechanical performance is lower that coefficient of friction is very low, poor fluidity, heat Expansion is big.Simple polytetrafluoroethylene (PTFE) material property is softer, and intensity, hardness are insufficient, density is smaller, is not enough to individually make here For disc use.But after being used cooperatively with the disc of former brass material, the abrasion of disc can be effectively reduced.Meanwhile The weight and kinetic characteristic of disc are remained again.

Mutual coefficient of friction is 0.1-0.2 between tetrafluoride material, is 0.1-0.3 with intermetallic dry friction coefficient, has It is 0.02-0.04 in the case of hydrodynamic lubrication, static and dynamic friction coefficient is all smaller, and its static friction and dynamic friction coefficient almost one Sample, the linear resonance surface velocity of polytetrafluoroethylene (PTFE) disc may be up to 30-33m/s, and polytetrafluoroethylene (PTFE) disc and brass disc are special Property comparison, as shown in table 1.

The size of force of sliding friction is directly proportional with the mutual normal pressure for the object that is in contact with each other, i.e. f=MN.Calculate analysis Surface: coefficient of sliding friction Sui relative sliding velocity increases and increases；When frictional interface real contact area and load are linear When relationship, the coefficient of sliding friction is unrelated with contact area.When real contact area is close to nominal contact area, sliding friction system Number reduces with the increase of load.In addition, coefficient of sliding friction Sui lattice constant increases and reduces, reduce with atomic mass. The relationship of coefficient of friction and vertical load is as shown in Figure 3.

1 polytetrafluoroethylene (PTFE) disc of table and brass disc Character Comparison

If polytetrafluoroethylene (PTFE) disc is equal with brass disc linear velocity, it is necessary to increase the weight of polytetrafluoroethylene (PTFE), Same frictional force can be just obtained, f=MN, calculation method: having oil lubrication coefficient of friction, and polytetrafluoroethylene (PTFE) is identical as brass.Therefore Copper ring is inlayed in polytetrafluoroethylene (PTFE) disc, keeps weight suitable with the weight of brass.

W3=W1-W2

W3 is to inlay rear disc self weight, and W1 is the brass billet self weight in design, and W2 is oneself of recessed tetrafluoroethene disc Weight.

W1=W2+W3

Delivery rate: when disc speed is lower than conveying speed, delivery rate presses following calculation Qt=0.018 (DN)^1.5Wr^0.65

Wherein W --- axle journal oils ring width

The width of the inserted disc of the utility model is greater than brass disc.Therefore improved inserted disc is Fuel delivery should be greater than brass disc, and 2 concave oil storage tanks of ring design in inserted disc, substantially increase fuel feeding Amount.

The inserted disc of the utility model is polytetrafluoroethylene (PTFE) to be processed into concave circle, then inlays copper ring, such as Shown in Fig. 1-2.

The design concept of the utility model: the outer surface design of inserted disc is convex shape, is winged in order to improve The fuel delivery splashed, Widening Design also improve fuel delivery, and inner surface can preferably pass through oil using double concave type oil storage tank High speed rotation is brought into bearing shell, and this unique design can reach good lubricant effect, meanwhile, also reduce bearing shell temperature Degree plays the role of protecting bearing shell.

The utility model inlays the evaluation of disc running effect:

As shown in figure 3, inlay disc using the operation on multistage pump P6001/1.2 through 3 months, effect is fine. Lubricating oil cleaning, tank temperature is normal, extends service life of equipment, reduces the labor intensity of worker, achieves the desired results.

High evaluation, machine are given to the multistage pump to come into operation after improvement using workshop leader, the equipment personnel of unit Dynamic person in charge gives affirmative to the scheme of design, and promotes the use of in full company.

The utility model inlays disc and is applicable not only to P6002/1.2 multistage pump, can use, be also suitable on bearing shell In P6001/1.2 multistage pump, can be used on bearing.It can solve through observation pump operation rule, analyze the change of its lubricating oil Dirty reason, proposition are transformed disc structure, the defect of copper disc are solved from source, extends the operation of equipment Service life.

Disc is generally made of simple brass, cast iron or polytetrafluoroethylene (PTFE) material, and the utility model is by brass Disc is made with polytetrafluoroethylene (PTFE) two kinds of materials combination, takes the chief of two kinds of materials, both ensure that brass material intensity and Oily effect is got rid of in hardness, guarantee, is in turn avoided brass abrasion and is generated copper powders, to keep the cleaning of lubricating oil, extends the bearing shell longevity Life.It is improved by this, provides a kind of new design concept.

Claims (4)

1. a kind of inserted disc, which is characterized in that the disc includes the disc ontology of polytetrafluoroethylene (PTFE)；

The outer surface of the disc ontology is circumferentially equipped with annular groove；

Copper ring is inlaid in the annular groove；

The depth of the annular groove is less than the height of copper ring.

2. inserted disc according to claim 1, which is characterized in that the rectangular in cross-section of the annular groove.

3. inserted disc according to claim 1, which is characterized in that the inner surface of the disc ontology is circumferentially It is equipped with oil storage tank.

4. inserted disc according to claim 3, which is characterized in that the oil storage tank is the oil storage tank of double concave type.