CN1041546C

CN1041546C - Wobble plate machine

Info

Publication number: CN1041546C
Application number: CN94107592A
Authority: CN
Inventors: F·赖斯
Original assignee: HOFMANN HOFMANN SOENDGEN PAULY GDBR
Current assignee: HOFMANN HOFMANN SOENDGEN PAULY GDBR
Priority date: 1994-05-16
Filing date: 1994-05-16
Publication date: 1999-01-06
Anticipated expiration: 2014-05-16
Also published as: CN1114004A

Abstract

The present invention relates to a wobble plate machine which is provided with a spherical working chamber which is divided into a high pressure chamber and a low pressure chamber. A working medium is conveyed from a pipeline; a separating wall extends to a piston support to be matched with a sealing strip, and is provided with a swinging piston which is supported on a working shaft; a radial gap is arranged on the piston, and a guiding shaft neck which is matched with the separating wall is inserted into the gap. The circumferential direction of the piston shrinks outwards, and the end surface of the piston is in contact with a side surface which is perpendicular to a shaft line of the working shaft and limits the working chamber from a side direction. The guiding shaft neck which is arranged in the radial gap conducts guidance in a guide groove in the separating wall, and the radial gap is provided with a side wall with a certain angle. An open angle is matched with the swinging stroke of the piston, the guiding shaft neck is matched with a sealing member which is arranged in the piston support, and the open angle is matched with the radial gap.

Description

Skew-plate machines

The present invention relates to a kind of skew-plate machines, it has the active chamber of a hollow ball shape, it is divided at least one high pressure side and a low voltage side by a partition wall, working medium can be by a pipe-line system input wherein, partition wall stretch reach a piston support and with the Stamping Steel Ribbon collaborative work of a plate shape, also has a tool ring, piston with the diameter of active chamber coupling, it is connected with space outerpace by a live axle that is being supported, this live axle causes piston to do the capstan motion, this piston has at least one piston line of rabbet joint from circumferential extension to about piston support diametrically, wherein pack into one and guide axle journal, it and partition wall collaborative work; And piston is outwards towards the circumferencial direction convergent, and the end surfaces of piston is with opposed and contact perpendicular to the spin axis side surface that stretch and limit active chamber on the side of live axle.

The present invention relates to be used to carry the field of swash plate-working machine of the medium of liquids and gases, as the grouping in working machine field, particularly swash plate pump and slant plate type compressor.

A kind of such swash plate-working machine has been disclosed in German patent DE 3542648C ₂In.Disclosed therein technological scheme relates to a skew-plate machines with ring piston, and piston is arranged in the active chamber of a hollow ball shape.Piston is supported on the piston support and by a live axle and makes it to do the capstan motion, is connected with the piston forming shape by the direct loaded piston supporting of this axle, and makes piston carry out the capstan motion.By the partition wall that engages with a piston branch active chamber that constitute, that be positioned at the piston both sides, according to the sense of rotation of the live axle that piston support is driven and with the mode work of hyperbaric chamber and low-pressure cavity, wherein, the corresponding work medium is transfused to and discharges.

For full-bodied medium, for example molasses or heavy oil, then herein sealing is enough and can only guarantees to rub to be appropriate.In contrast, for low viscous medium, then may produce blow-by and strong wearing and tearing owing to occur in the friction between piston guide device and the partition wall inevitably.

Herein, piston this lead device comprise one put into the piston radial line of rabbet joint, basic shape is designed to that the guiding axle journal of cylindrical column piece and one are corresponding to the partition wall wall thickness, partition wall engages the line of rabbet joint within it.Follow by by corresponding with stagger in the rotation capstan motion of the piston that piston support produced that is provided with of live axle, this guiding axle journal slides along partition wall.

A kind ofly often adopt the measure of eliminating above-mentioned defective in such cases, that is on known machine the minification tolerance, particularly have the tolerance of the member of relative movement, for example guide the width tolerance of axle journal in the line of rabbet joint, proved unpractiaca.The minification tolerance can only cause improving wearing and tearing on the contrary, and perhaps even cause malfunctioning machine, for example because excessive friction can cause killing, therefore this measure has been excluded.

The objective of the invention is to avoid this paper to start the shortcoming of the skew-plate machines of described type, thereby the friction between a kind of member that reduces to have relative movement is provided and can damage therebetween sealing and make the skew-plate machines that all fluids can the operation of fault-free ground.

Purpose of the present invention realizes by following technological scheme: the cylindrical guiding axle journal that is arranged on rotationally in the radially line of rabbet joint of piston is guided in a guide slot that is located in the partition wall; This radially the line of rabbet joint be provided with the sidewall of band angle, its subtended angle is complementary with the oscillating stroke of piston; And the guiding axle journal is with a black box mating reaction that is located in the piston support, and the sealing assembly is suitable with the subtended angle of the radially line of rabbet joint of piston.

This above-cited solution is specially adapted to the high-speed operating conditions of skew-plate machines of the present invention, because these are in each other that the surface that engages or recline compares with known skew-plate machines is to have dwindled significantly, in addition, it also is possible further reducing the measure that rubs.

According to favourable structural development scheme of the present invention, rotating guiding axle journal is bearing in the radially bottom of the line of rabbet joint by a thrust-bearing.Can cause thus rubbing and further reduce, because there is not adhesion friction, and the cylindrical guiding axle journal that just rotates when piston is done the capstan motion produces smaller significantly rolling resistance at partition wall in the distolateral guide slot of active chamber.In the case, the real friction that occurs may be sliding friction at most, and also being cylindrical guiding axle journal is just producing when on the pressure side Line of contact slides with linear fashion on the inwall that the tangent direction with respect to this axle journal of guide slot stretches.

Therefore this configuration is particularly suitable for the operation of skew-plate machines of the present invention as high-pressure service pump or compressor.In both cases, and special under situation, verified as compressor, the guide device of radial piston of the present invention in the guide slot of partition wall, because by means of the guiding axle journal of the rotation of in the line of rabbet joint radially, settling, so be insensitive and also like this under high revolution to wearing and tearing.

Another is implemented in the structure in the present invention, being bonded on partition wall in the radially line of rabbet joint that is arranged in the piston has certain tolerance ground by its guide slot with two opposed sidewall and will guide axle journal and surround, like this, just two may abutment surfaces a side that is the corresponding inwall side of the guide slot in partition wall be stressed loading, and that relative side does not have is stressed.Thus in structural development scheme of the present invention, reach and cause very favourable wearing and tearing and reduce, this is because quite little and almost insignificant friction causes.

According to another solution of the present invention, piston has a radially line of rabbet joint, this radially the line of rabbet joint have the sidewall of chamfering in the opposite direction, the subtended angle of sidewall and the oscillating stroke of piston are complementary, and, at the bottom of the line of rabbet joint and be bonded on the end face of the partition wall in the line of rabbet joint radially corresponding be provided with one that coordinate mutually and with the spherical arch face of radius coupling at the bottom of the line of rabbet joint.

Be, not guide axle journal with the difference of first solution though piston has a radially line of rabbet joint equally.In other words, the guide function of radial piston is realized by the sidewall that the oscillating stroke with piston is complementary.In order to reduce the friction that occurs thus, the shape of the common contact surface of piston and partition wall end face is mated mutually.Reach thus and cause good seal action, yet when using the skew-plate machines of the present invention of this spline structure, can only carry out operating mode with the slow speed operation.

In suitable structural development scheme of the present invention, be arranged on the radially both sides of the line of rabbet joint by the application of force with sealing roller in the radially line of rabbet joint that partition wall is bonded on piston, that in the line of rabbet joint radially, do the tangent direction operation, roller abuts on the partition wall.

This sealing roller has double action at this.On the one hand it be used for, as shown in drawings, two relative pressure chambers of sealing; It also is used for guidance piston on the other hand, wherein, because the cylindrical rollers shape of sealing roller, thereby sealing the contact surface that always only has a linearity between roller and the piston.Therefore, the friction that causes thus almost can be ignored.

But also can seal roller and sealing lip is set, it have equally a rounding, be equivalent to the semi-cylindrical surface that reclines for partition wall, can be that tangent direction motion ground is provided with in addition equally, therefore, it always is close on the partition wall.In order further to reduce the sliding friction that takes place thus, the material pairing of sealing lip and partition wall can be chosen to make it to form certain lubrication, can improve seal action again simultaneously, for example is suitable for the bearing metal of sealing lip by employing.

In another organization plan of the present invention, the sealing roller can be loaded by pressure spring, will seal roller and be pressed onto on the partition wall.

According to particularly advantageous structural development scheme of the present invention, the sealing roller is to be loaded by the pressure medium that active chamber comes, and can also add in case of necessity mechanical spring is set.

According to advantageous embodiment of the present invention, Stamping Steel Ribbon is arranged on as a piston ring in the circumferential groove of piston.According to the purpose requirement, the sealing bar is made and is embedded in by flexible material it always can be abutted on the inwall of active chamber with sufficiently high impacting force.

According to another favourable structural development scheme of the present invention, the sealing bar can additionally or just be pressed onto on the housing by working medium uniquely, has improved seal action thus significantly, and can not produce unallowed high frictional force.

By the measure that is used to improve known skew-plate machines of the present invention, can also carry low viscous and medium gaseous state, and not exist movable part to cause the danger of too high friction owing to lack of lubrication.Here should consider that for those frictions that move relative to each other and stressed especially zone, the sidewall surfaces of the piston guide device in the partition wall and the radially line of rabbet joint in the piston for example should be by special measure to prevent to produce unallowed friction.

A kind of like this measure, according to the present invention can be the member that roller shape structure tangential motion, that loaded by the application of force is set on the side surface of the line of rabbet joint radially, and these members are used to make piston along the mutual sealing of branch active chamber that is bonded on partition wall guiding wherein and is used for simultaneously being made of piston and partition wall.

In structural development scheme of the present invention, these guiding body or sealing roller are pressed onto on the partition wall by pressure spring, like this, just contact and provide good sealing constantly with partition wall.And spring force is specified to and makes one side should produce enough impacting forces, can not cause unallowed high friction on the other hand again.

But can use from the pressure medium loading of corresponding minute active chamber the sealing roller without spring, thereby always only need apply the required impacting force of the regnant pressure of sealing.

In addition; in another favourable organization plan of the present invention; be used to compress the pressure spring of sealing roller and loading acting in conjunction, even so that guarantee under the pressure-less state, for example when skew-plate machines is shut down, also guarantee a sealing of resisting a minimum pressure with this mode by working medium.

According to organization plan of the present invention, because it is special the setting in order to be used for carrying unclean fluid, so the piston that is used for this skew-plate machines at least one end face, and be provided with the groove of circumferentially extending at least regionally, these grooves are limited by the rib spare of cutter shape.Just can realize thus, impurity, for example the smear metal when paper is produced and wood chip or fish add man-hour bone or fruit and grape residue when wine brewing and fruit juice are made, just can between the inwall of piston and active chamber, not block, like this, the pumping function of skew-plate machines just can not be affected.

In suitable structural development scheme, the zone that is provided with radial groove in piston is a circular sector section, and its angular bisector stretches perpendicularly with the axis of the piston line of rabbet joint.At this, can on two end faces of piston, radial slot be set according to advantageous embodiment of the present invention, the groove on these piston respective end surfaces is arranged in the fan section, and its side and the piston line of rabbet joint are adjacent.

Proved advantageously that herein the zone that piston is provided with groove always is arranged so that on the opposed end surfaces of piston that one is divided into an edge with this piston and has the first piston branch of cutter shape rib spare of radial groove and circumferentially extending and second piston, half one of a smooth piston face that does not have groove and rib along the sew cloth piston separating plane put of piston groove.

For failure-free operation, importantly, this smooth piston area is arranged on the suction side at this, is arranged on it on the pressure side and piston is provided with the groove district of cutter shape rib spare.This means, should avoid the change of sense of rotation and thing followed suction side on the pressure side variation, vice versa, because, if not, just the intermediate cavity that may cause owing to groove in aspiration procedure makes between piston face and active chamber blow-by takes place, and this blow-by meeting causes for carrying the necessary low pressure of relevant medium not produce.

According to the present invention, these grooves preferably only are arranged on the beveled end surface of piston, and they contact with the active chamber wall.In contrast, remaining piston end surface is smooth, that is does not have groove and rib spare.

Be preferably in the maximum groove width that an inner width is 15mm is set on the inner circumference, that is begin to tilt at this radius upper piston.Groove depth becomes a definite ratio with respect to groove width, and according to favourable organization plan of the present invention, for example groove depth is 4mm, is equivalent to 40% of affiliated groove width.

But basic principle is the width of the groove that radially is provided with should be provided with to such an extent that be equivalent to 7.5 ° ± 2.5 ° of angular spacings, follows in addition, and according to the corresponding piston diameter, the inner width of groove matches, and under the situation of large scale piston, also wide groove should be set.This point shows that operation is favourable in this scope, and the skew-plate machines of big piston diameter is commonly used to carry big rate-of flow, usually also has relatively large impurity.

For the structure of groove, particularly advantageous when demonstrate,proving is that groove has tetragonal profile.As optimal way, it can be a rectangular profile, and it becomes smooth on the y direction of groove or camber stretches.Groove has a trapezoidal profile with smooth bottom land and tipper sidewall but at this to the intensity of the rib spare that limits groove toward each other also advantageously.

This may be an additional advantage, and groove is asymmetric moulding with respect to its longitudinal axis, and has the sidewall of and identical or different gradient wide with the V-arrangement type of narrow bottom land.The simultaneously advantageously sidewall of the piston line of rabbet joint side of each groove, those sidewalls, steeper just than sidewall opposed with it near the piston lines of rabbet joint.Just can realize that thus when piston rolled, the conveying material of solid just looked like to be taken away by a scoop, and can not fall on the active chamber wall.

In particularly advantageous embodiment of the present invention, the groove sidewall of piston line of rabbet joint side is 105 ° to 120 °, is preferably 112 ° with respect to the drift angle of bottom land, groove sidewall opposed with it with respect to the drift angle of bottom land then greater than 135 °.

Further mode of structure about the groove sidewall, help carrying the structure of the flowing medium that contains a large amount of solid matters to be, the outer edge that the rib spare that limits the cutter shape of groove has a knife-edge with one to compare with outer edge be the base portion that is positioned at bottom land than broad, this base portion has strengthened corresponding rib spare.

For reducing piston and being provided with the wearing and tearing of the piston face of groove and rib spare, proved that the rib spare surface of cutter shape is favourable through cure process.Another program or the scheme that can add where necessary are the coatings that the rib spare of cutter shape has a high-abrasive material.

Another organization plan is that the discrete inserts that rib spare is made as cemented carbide embeds on the piston.

The organization plan that is specially adapted to wine-making industry is that piston is made by non-corrosive material, preferably by the stainless steel manufacturing.

In addition, special under the situation of enlarged bore piston, hold the cutter shape rib spare bottom land partly the design mix piston component of opening manufacturing be favourable, it is connected with piston.

In service in reality, the effect of the outer edge of the knife-edge of each rib spare is, at piston on the active chamber inwall during continuous rolling, be in solid constituent between active chamber and the piston and be not and only be extruded as before and cause active chamber may produce blow-by thus, but be cut open pulverizing by the sharp blade of each rib spare.At this, the inwall of active chamber just plays the effect of the cutting bearing of a similar anvil.For this reason, all flowing mediums that this skew-plate machines without a doubt can conveyor belt solid matter component, the wood chip slurry in paper industry or in wine-making industry, be mingled with the pulp juice of so-called grape stem bits for example.The piston area when being provided with groove that this front has been mentioned may cause the problem of trouble when being placed on the suction side, for on the pressure side then being inessential, because the solid matter component that has transported here is present in the pistons work chamber, groove is full of thereby help the sealing.

The target of another organization plan of the present invention is, avoids being out of order when conveying has the medium of granule foreign, and for this reason, this piston is being provided with the soft bed of material on the zone that is preferably just tilting on its piston face.This soft bed of material can by rubber constitute and the steel piston base on vulcanize.A flexibility can also be set without rubber but wear-resisting plastics, for example ABS as the soft bed of material.Under any circumstance, just can make such as sand, pellet, stone or blow-by when similarly particulate contamination can not cause pump operation by the soft bed of material, because, piston always abuts on the active chamber wall with its sealing surface, may exist impurity therebetween just to be pressed in the soft bed of material, as removing with a scraper in advance.

Below, by the embodiment who describes in the accompanying drawing, the present invention and preferred construction of the present invention and improvement project and special advantage are elaborated.In the accompanying drawings:

Fig. 1 is the longitudinal section that has the skew-plate machines that imports inner guiding axle journal of the present invention;

Fig. 2 is the sectional view of getting along line I-I of Fig. 1 (overlooking piston);

Fig. 3 is the longitudinal section by active chamber, and the piston and the piston guide device of skew-plate machines of the present invention wherein is housed;

Fig. 4 is the side view of not guiding the piston of axle journal, and has described piston-divider wall section with broken section;

Fig. 5 describes a piston apparatus with first kind of black box in the exploded view mode, has the guiding axle journal that is housed to and the line of rabbet joint sidewall of side direction;

Fig. 6 illustrates second kind of black box;

Fig. 7 illustrates the third black box with integrally formed guiding axle journal;

Fig. 8 is the longitudinal section by the active chamber of skew-plate machines shown in Figure 1, has the new piston of a band radial groove;

Fig. 9 illustrates the side view of a new piston;

Figure 10 is new piston end face plan view, is combined by two views that draw at the direction of observation of 90 ° of mutual dislocation.

Figure 1 illustrates the longitudinal section of skew-plate machines 10 of the present invention, it has a housing 12 that is made of left side housing branch 13 and the right housing branch 14, wherein is provided with an active chamber 16.These two the housing branches the 13, the 14th that form housing 12 fit together with being threaded with known manner.

In being designed to spherical active chamber 16, be placed with a partition wall 18, it is divided into a hyperbaric chamber 23 and a low-pressure cavity 24 with the piston 20 of a ring with active chamber 16.

Piston 20 is held on by a piston support 26, and this piston support 26 is sleeved on the live axle 28.This live axle 28 is outwards derived from the side, and therefore, this live axle can be by a motoring of not describing in detail.

This piston support 26 is to be assembled by two and half ones with known manner, its branch gap tilts, that is to say and install at an angle with respect to live axle 28, therefore, the piston 20 that sandwiches between these two piston support half ones becomes to tilt to install with the longitudinal axis of live axle 28 too in known manner.For this reason; the neighboring area of piston 20; that is to say that near the zone its circumference is that tilt and consistent with the full swing position that causes when capstan moves; thus; can guarantee that on the one hand piston realizes moving fully in active chamber, for the known skew-plate machines of prior art, also can realize the manufacturing of simplifying on the other hand.

On the side of partition wall 18 directions, piston 20 has a radially line of rabbet joint 30, and this partition wall 18 is bonded on wherein.This is the

sidewall

32,33 of the line of rabbet joint 30 radially, is that the oscillating stroke with piston 20 consistently tilts as shown in Figure 2.At the bottom of the line of rabbet joint of the line of rabbet joint 30 radially 34, place one with thrust-bearing, at this black box 37 that is designed to rolling bearing structure, is supporting, a guiding axle journal 38 is housed on it.

This guiding axle journal 38 is cylinders, and it is installed at the bottom of the line of rabbet joint 34 middle part, and in the guiding of the both sides of a guide slot 40, this guide slot 40 is those distolateral the processing facing to piston 20 at partition wall 18.The guiding axle journal 38 of guiding is used for realizing that by the piston support 26 of rotating the piston 20 of capstan motion limits, and makes one play rotation in guide slot 40.In other words, this piston causes because guiding axle journal 38 is guided institute in guide slot 40, carry out a to-and-fro motion, wherein, piston carry out one with the angle loxosis corresponding to oscillating motion of piston support 26 with respect to live axle 28, the capstan that shows as that this motion is total moves.The swing distance of piston or in addition the mode oscillating stroke of expressing be according to the rules application purpose, for example determine as high-pressure service pump or as compressor, that is to say, the high more words of driving revolution for the live axle setting, then the frequency of swing or capstan is also high more, and swing distance or oscillating stroke are also more little, to guarantee the performance of reliable skew-plate machines 10.

In order to improve the sealing of piston 20 on active chamber 16 inwalls, the Stamping Steel Ribbon 21 of in the circumferential groove 22 of piston 20, packing into.These Stamping Steel Ribbon 21 similar piston rings abut on the inwall of active chamber 16 like that, and the good seal performance of low-pressure cavity 23 with respect to hyperbaric chamber 24 is provided under less rubbing action like this.

In Fig. 2 with the top cross-sectional view mode from above skew-plate machines 10 depiction 1, here, the cross section is to analyse and observe along the line I-I among Fig. 1.For illustrate and understand better for the purpose of, for identical feature at the identical label of this application drawing 1.

Especially in this view, guide slot 40 is at the configuring condition of partition wall 18 on the end face of piston 20 directions as can be seen, and this guide slot 40 surrounds the guiding axle journal in both sides, and, always idealizedly only on tangent line, contact.Understand easily thus, use this solution, in terms of existing technologies, realizing a tangible advantage aspect the reduction friction, because this contact surface that is in contact mutually is under the situation of skew-plate machines of the present invention, it always only is the straight line of a very small extension, in contrast, in the prior art, the contact surface between the guiding axle journal of partition wall and setting there is to be made of their total line of rabbet joint surfaces.

Not only in Fig. 1 but also at Fig. 2 and 3, all show lubrication channel or lubrication hole 54 and venting channels or vent 56, they are used for, make the slidingsurface that relative movement is arranged each other on the one hand, for example guide axle journal 38 and guide slot 40, and bearing position, first and second piston bearings 42 in piston support 26 for example, 44, perhaps all supply enough lubricant mediums at thrust-bearing 36 in 34 at the bottom of the line of rabbet joint and the block bearing 46 that is used for supporting driving shaft 28, simultaneously prevent from excessively to provide lubricious medium on the other hand, wherein, unnecessary lubricant medium can be automatically by being sucked from the negative pressure in the swash plate movement process.

The housing screw that indicates with label 58 is used for two

housing branches

13,14 of skew-plate machines housing 12 are coupled together.They are provided with around active chamber 16 centerings, in order to ensure the blow-by or the housing dislocation that negative consequence can not occur operation is had.

Be the view of a similar Fig. 3 in Fig. 4, that is the side view of a ring piston 20, what divide is to have other being specifically designed to lowly to drive the operation of revolution and be arranged on piston guide device on the partition wall 18 but this piston is different herein.Replace non-existent guiding axle journal 38 herein, the guide device of this piston 20 only is to realize by the

sidewall

32,33 of the line of rabbet joint 30 radially, and sidewall closely abuts on the partition wall 18 that is bonded in the line of rabbet joint 30 radially.

For further reducing friction, between the top, two opposed angles of the

sidewall

32,33 of chamfering in the opposite direction so-called sealing roller 60 is set, they load and cling on the partition wall 18 by a pressure spring that is not shown specifically and/or by the corresponding work medium respectively.

One embodiment of the invention of having mentioned based on the front, in hyperbaric chamber 23 and low-pressure cavity 24 corresponding configuration lubrication hole or lubrication channel 54 and vent or venting channels 56, thereby can in housing 12 and piston 20, lubricate bearing

position

42,44,46 equably, as if do not fix one for sealing seal mouth ring 51 and a stuffing box 53 or slide ring seal 52 that replaces these two kinds of seal arrangements to use that axle bush is provided with having pressure in addition, that is to say that pressure medium is laid down.For this purpose, at the deepest point place of each

relevant seal arrangement

50,51,52 vent 56 is set respectively.In order to protect these is that the seal arrangement 51 sealing axle bush setting and that directly loaded by lubricant medium or the pressure injection of 52 unlikely lubricated media cause mechanical failure; in a favourable development scenario of the present invention; a so-called strike plate 50 is installed; it is made by metallic material, causes the mechanical stress of

seal arrangement

51 and 52 obviously to reduce.

Traditional slide ring seal 52 of herein using is because the lubricant medium that is in high pressure under sprays the mechanical stress that causes, can only be without a doubt or the operation of fault-free ground do not have the operating life of individual hour weak point of hundreds of.Therefore operating cost since essential the forcing of purchasing and replace of spare part stop work and improve significantly.On the contrary, use given protecting against shock dish 50, it lives live axle 28 with enough gap encircles, just can realize working life of improving significantly, and this is verified in all respects all to be favourable.The protecting against shock dish of having carried or the gap of strike plate 50 can stop the pump efficiency of not wishing the lubricant medium that occurs should, this pump efficiency should then unavoidably can take place when the passage between live axle 28 and the impact disc 50 is narrow, lubricant medium is transported to by housing in the sealing area of axle bush of live axle 28 and will causes leakage, but this has been prevented from.

When skew-plate machines 10 being used as compressor according to possibility mode of the present invention, in suitable structural development scheme, bearing

position

42,44,46 lubricated be by a lubricant medium joint 62, for example the lubricant medium of outer confession realizes for the member of spherical valve form is brought into, on this joint, can dispose one be with the plug link, detailed description but be general known lubricant medium flexible pipe in the prior art herein.By this outside lubricant medium supplier, by the lubrication channel that is designed to center hole 64 that in live axle 28, is provided with, single bearing position 42 and 44 in piston 20, comprise guiding axle journal 38 and the block bearing 46 that in housing 12, is used for supporting driving shaft 28, the lubricant medium amount supply of enough deals can be arranged.In addition, except the guiding axle journal 38 in the piston 20, guide slot 40 in partition wall 18 is distolateral also is included in this lubricated circulation, lubricant medium is carried with enough pressure by lubricant medium joint 62, and can discharge again by the vent of having carried in low voltage side, so that pressure chamber does not keep lubricant medium, so also just avoided pressurized air to contain not wishing the too much lubricant medium as oil that occurs.

According to the present invention, when live axle 28 counter-rotatings, 54 pairs of skew-plate machiness 10 of lubrication channel are talked about the effect of vent 56, and vent 56 plays lubrication channel 54 conversely.In view of the situation of this dual-use, this lubrication system can be provided with pore-forming 54,56, or the spherical valve that is not described in detail, or similar corresponding construction.

An additional advantage, it is because a favourable structural development scheme of the present invention, the measure that also is about in guide shaft neck 38 is placed in partition wall with enough big gap the groove are produced, show, because the aerating system 56 that the front has been described, the recline pressure of guiding axle journal 38 on the inwall of guide slot 40 is reduced, so the possible fretting wear based on this has just reduced greatly, and then prolonged the working life of skew-plate machines of the present invention significantly.

In Fig. 5, a piston apparatus with first kind of black box 37 that is contained in the skew-plate machines shown in Figure 1 is shown in so-called exploded view mode and with vertical profile and side-looking.Sealing assembly 37 comprises an inserting member 39, one radially line of rabbet joint spare 31 and the guiding axle journal 38 that is provided with in this line of rabbet joint spare, this guiding axle journal is provided with and is used for being bonded on guide groove 40, this guide slot 40 is formed in the pressure chamber side wall of partition wall 18, and this axle journal 38 by removably connect, for example screw thread or screw connect radially that line of rabbet joint spare 31 is connected with piston 20 with inserting member 39.The advantage of this solution is, the material pairing of the partition wall 18 by suitably selecting guiding axle journal 38 and band guide slot 40 perhaps is provided with the fretting wear that coating just can make the front describe in case of necessity and reduces further on the guide slot inwall.

37 1 other performances of black box are, except the maintenance function to guiding axle journal 38, also are to be contained in this radially in the line of rabbet joint 30.By means of being shaped as the radially line of rabbet joint 30 X-shaped and that have the line of rabbet

joint sidewall

32,33 that on side direction, is in the angle setting, partition wall 18 engages within it with precision-fit, as describing in Fig. 1, the angle of oscillation of this piston 20 and its oscillating stroke just have been defined.Also provide such possibility at this, promptly select to improve required seal action by suitable material, and the fretting wear that reduces to occur.

In addition as can be seen from Figure 5, piston 20 has a groove 35 radially with the radially line of rabbet joint 30 or black box opposite edges, and the cylinder 65 with circular cross section is established within it.This groove 35 radially be used for equalizing piston 20 because the imbalance that the material bite that radially produces during the line of rabbet joint 30 at the processing X-shaped causes, simultaneously, by counterweight 65 being inserted in the groove 35 radially, even have the radially line of rabbet joint of other geometrical shape and thereby cause also realizing weight balancing under the materials with smaller bite situation using one.

With side-looking and plan view second kind of black box is shown in Fig. 6, it can replace black box shown in Figure 5 37 to use.Be in the black box 37 shown in Fig. 5 different and do not have radially line of rabbet joint spare in, sealing assembly 66 and have only an inserting member 67.In this case, the oscillating stroke of piston 20 limits by a radially line of rabbet joint 30 that is provided with line of rabbet

joint sidewall

32,33 and is shaped in piston.For improving the sealing between partition wall 18 and piston 20, this inserting member 67 is arch face spherical in shape on the surface of its supporting guiding axle journal 38, and simultaneously, this arch face is with partition wall 18 corresponding distolateral configuration unanimities.In order to fix clearly in piston 20, this inserting member 67 has the configuration of V-arrangement on two opposed sides, and radially the line of rabbet joint 30 is harmonious for the X-shaped in it and the piston 20.

With side-looking and plan view the third black box 68 is shown in Fig. 7, it can replace the black box 37 or 66 shown in Fig. 5 or 6 to use.Not existing together with the black box 37 or 66 shown in Fig. 5 or 6 is, shown in black box 68 with guiding axle journal 38 structure that links into an integrated entity.In its another structure, it is consistent with second kind of black box 66 shown in Fig. 6.Therefore it does not have radially line of rabbet joint spare equally, but configuration with a sphere arcuate surface and the V-arrangement on limit, two opposed longitudinal sides, radially the line of rabbet joint 30 is mutually harmonious for X-shaped in this V-arrangement configuration and the piston 20, therefore guarantees that a firm cooperation is arranged in piston 20.

Add up to, in the lubrication system in being arranged on skew-plate machines of the present invention, it has utilized the different pressures of pumping system, by by the suction that negative pressure realized to unnecessary lubricant medium, and just can be very neatly, work frugally and effectively.

Figure 8 illustrates a sectional view by the skew-plate machines of Fig. 1, this skew-plate machines 10 has a new piston 20 in its active chamber 16.The

housing branch

13,14 of two formation housings 12 connects by the screw that is not shown specifically with known manner and fits together.

Be provided with a partition wall 18 in being designed to spherical active chamber 16, it is divided into active chamber 16 with the piston 20 of ring and is positioned at following hyperbaric chamber 23 and is positioned at top suction or low-pressure cavity 24.

Piston 20 is clamped by piston support 26, and this piston support 26 is sleeved on the live axle 28.This live axle 28 is outwards derived on side direction, and can be by a motoring that does not describe in detail in the outside.

This piston support 26 is also assembled by two and half ones in the known mode that is not shown specifically at this, its branch gap be tilt, that is to say located at an anglely with respect to live axle 28, therefore the piston 20 that sandwiches between two and half ones of piston support 26 also is obliquely installed with the longitudinal axis of same known mode and live axle 28.Near the neighboring area of this piston 20 that is its circumference zone tilts, therefore, piston could abut on the inwall of active chamber 16 with the swing position of its piston face corresponding to the corresponding maximum of carrying out causing when capstan moves, thus, the complete exercise performance of piston in active chamber 16 just guaranteed.

On the side of partition wall 18 directions, this piston 20 has a radially line of rabbet joint 30, and partition wall 18 just engages within it.Radially in the line of rabbet joint 30 a guiding axle journal 32 is being housed, it bears the swing active force of piston 20.Guiding axle journal 32 that should guiding in the line of rabbet joint 30 radially is used to stop by the piston support 26 of rotating brings the piston 20 of capstan motion into along with rotation.In other words, piston 20 and since guiding axle journal 32 in the line of rabbet joint 30 radially guiding so carry out a to-and-fro motion, in this moves, piston carry out one with piston support 26 with respect to the corresponding to oscillating motion in the angular orientation of live axle 28, it is generically and collectively referred to as capstan and moves.

Avoid being out of order when having the flowing medium of a large amount of solid constituents as fiber, smear metal, burr, cane, particle, sheet bits or analog in conveying, this piston 20 has the groove 76 that is limited by the rib spare 78 of cutter shape on two belongs to the pressure-piston face 72 of pressure chamber 23.Here, the task of the rib spare 78 of cutter shape is, those solid constituents that fall into when piston 20 is done oscillating motion between the inwall of piston face 72 and active chamber 16 are successfully shredded.Simultaneously, the cavity of groove 76 also is respectively applied for the foreign material of temporarily those being broken into pieces and accommodates, and reaches certain seal action thus, and is straight till the component that these are broken into pieces transfers out successively.

In contrast, this suction-piston face 74 keeps smooth, that is does not have groove or rib spare.Its reason is to set up an enough low pressure, so that the fluid of corresponding conveying is taken away.If here the type exterior feature of the piston face 74 on the suction side causes noisy blow-by, it hinders and produces required low pressure.Between the inwall of piston face 74 and active chamber 16, may have the situation of clamping solid constituent, but be that problem is very little comparatively speaking.In any case, the sealing that is reached all is enough to guarantee to set up desirable low pressure.

The piston 20 of Fig. 8 is shown with side view in Fig. 9, that is to say pressure-piston face 72 with a trough of belt 76 and rib spare 78 and piston 20 with a smooth suction-piston face 74.In order to explain and to understand better, in this figure, identical feature adopts as the same numeral among Fig. 8.

Especially in this view, the configuration of groove 76 and rib spare 78 and they radial oriented and they can find out all that with respect to the position of the line of rabbet joint 30 radially this line of rabbet joint 30 encases in both sides at this unshowned guiding axle journal 32.The width of groove depends on the corresponding piston diameter and can be about 7.5 ° ± 2.5 ° with angle intervals approx to be determined.

A last view of seeing from both direction on the end surfaces of piston 20 shown in Figure 10 has the local display by piston face, therefrom can find out the groove longitudinal type exterior feature of groove 76.Above the separate planes of representing with dotted line, provided the radially view of the line of rabbet joint 30 again.A view that has rotated 90 ° is shown below.

According to this, this groove 76 both can be designed to the groove of continuous band straight line that is smooth bottom land, also can be designed to the groove of the bottom land (curve shown in the dotted line) with arc.Aspect the dissection of the rib spare of being sought, limit groove 76 78, a back embodiment is littler than previous scheme with smooth bottom land; For this reason, this organization plan has favourable wear life, thereby its application life has just improved.

During pump operation, the fed sheet of a media on the suction side of piston 20 is sucked, and because capstan moves and is transported to the pressure chamber 23 from suction chamber 24, herein, as long as need, the rib spare 78 of this cutter shape just shreds the solid constituent in the fed sheet of a media.

This groove 7 had mentioned it being radial oriented, and the rib spare 78 that limits it also is the same, and the groove width on excircle can be 5-10mm according to piston diameter.Capstan motion in conjunction with piston 20, radial oriented groove 76 and the groove sidewall that limits its rib spare 78 be used for making conveying material, particularly solid constituent, operation and similarly remain on a bag together automatically when piston 20 rolls on the wall of active chamber 16, therefore, conveying material can not stop and can not cause flowing backwards, but constantly continues to carry.Just can realize that in this way the medium that will be difficult to especially carry pumps.

The thickness of rib spare is 1mm ± 0.5mm preferably, and by corresponding processing, the cross section of this rib spare can be set taper for, has wide substrate and narrow outer edge.Therefore, the shear action of rib spare 78 improves on the one hand, and its wear life is improved on the other hand simultaneously.

Claims

1. a skew-plate machines (10), it has the active chamber (16) of a hollow ball shape, it is divided at least one hyperbaric chamber (23) and a low-pressure cavity (24) by a partition wall (18), working medium can be by the input of pipe-line system wherein, partition wall (18) can stretch reach a piston support (26) and with Stamping Steel Ribbon (21) collaborative work of a plate shape;

Also has piston (a 20) ring, that be complementary with active chamber (16), it is connected with space outerpace by a live axle that is being supported (28), this live axle (28) causes piston (20) to do the capstan motion, this piston (20) has at least one diametrically from circumferential extension to the radially line of rabbet joint (30) of piston support (26) roughly, wherein pack into one and guide axle journal (38), it and partition wall (18) collaborative work; And

Piston (20) is outwards towards the circumferencial direction convergent;

The end surfaces of piston (20) is with opposed and contact perpendicular to the spin axis of live axle (28) side surface that stretch and limit active chamber (16) on the side;

It is characterized in that,

Be arranged on guiding axle journal (38) guiding in a guide slot (40) that is located in the partition wall (18) in the line of rabbet joint (30) radially;

This radially the line of rabbet joint (30) be provided with the band angle sidewall (32,33), the oscillating stroke of its subtended angle and piston (20) is complementary; And this guiding axle journal (38) is with black box (a 37) mating reaction that is located in the piston support (26), and black box (37) is suitable with the subtended angle of the radially line of rabbet joint (30) of piston (20).

2. by the described skew-plate machines of claim 1, it is characterized in that partition wall (18) surrounds guiding axle journal (38) and is bonded on two opposed sides of guide slot (40) and is arranged in the interior radially line of rabbet joint (30) of piston (20).

3. a skew-plate machines (10),

Active chamber (16) with a hollow ball shape, it is divided at least one hyperbaric chamber (23) and a low-pressure cavity (24) by a partition wall (18), working medium can be by the input of pipe-line system wherein, partition wall (18) stretch reach a piston support (26) and with Stamping Steel Ribbon (21) collaborative work of a plate shape;

Also have a ring, with the piston (20) of the diameter of active chamber (26) coupling, it is connected with space outerpace by a live axle that is being supported (28), this live axle (28) causes piston (20) to make capstan moving;

This piston (20) has at least one diametrically from circumferential extension to the radially line of rabbet joint (30) of piston support (26) roughly; And

This piston (20) is outwards towards the circumferencial direction convergent;

It is characterized in that,

Piston (20) has a radially line of rabbet joint (30), this radially the line of rabbet joint have the sidewall of chamfering (32,33) in the opposite direction, the subtended angle of sidewall and the oscillating stroke of piston are complementary, and at the bottom of the line of rabbet joint (34) and be bonded on the end face of the partition wall (18) in the line of rabbet joint (30) radially corresponding be provided with one that coordinate mutually and with the spherical arch face of the radius coupling of (34) at the bottom of the line of rabbet joint.

4. by claim 1 or 3 described skew-plate machiness, it is characterized in that Stamping Steel Ribbon (21) is arranged in the circumferential groove (22) of piston.

5. by claim 1 or 3 described skew-plate machiness, it is characterized in that sealing bar (21) is pressed onto on the housing (12) by working medium.

6. by claim 1 or 3 described skew-plate machiness, it is characterized in that the sidewall design globulate of active chamber (16).

7. by the described skew-plate machines of claim 3, it is characterized in that, in the radially line of rabbet joint (30) of piston (20), be provided with sealing roller (60) to the dual-side application of force of partition wall (18).

8. by the described skew-plate machines of claim 7, it is characterized in that sealing roller (60) comes the application of force by pressure spring, this spring will seal roller (60) and be pressed onto on the partition wall (18).

9. by claim 7 or 8 described skew-plate machiness, it is characterized in that sealing roller (60) loads by the pressure medium that comes from active chamber (16).

10. by claim 1 or 3 described skew-plate machiness, it is characterized in that piston (20) is guided in piston support (26) by means of first and second piston bearings that are arranged on both sides (42,44).

11., it is characterized in that first and second piston bearings (42,44) are designed to rolling bearing by the described skew-plate machines of claim 10.

12. by claim 1 or 3 described skew-plate machiness, it is characterized in that, in housing (12), be provided with lubrication channel and venting channels (54,56).

13., it is characterized in that the lubricant medium of outer confession infeeds lubrication channel (54) from the outside of housing (12) by the described skew-plate machines of claim 12.

14., it is characterized in that for the lubricant medium of importing outer confession is provided with at least one lubricant medium joint (62), it is connected with lubrication hole (54) with lubrication channel in the housing (12) by the described skew-plate machines of claim 13.

15. by claim 13 or 14 described skew-plate machiness, it is characterized in that, be the lubricant medium of importing outer confession distolateral at least one lubricant medium joint (62) that is provided with at live axle (28), this live axle (28) is equipped with a lubricant medium passage (64) that is designed to center hole.

16. by claim 1 or 3 described skew-plate machiness, it is characterized in that venting channels (56) bears the negative pressure from low-pressure cavity (23), unnecessary lubricant medium is discharged from the lubricated position of being supplied with.

17. by claim 1 or 2 described skew-plate machiness, it is characterized in that, piston (20) is equipped with one by many black boies that constitute (37,66), it has an inserting member (39,67) and a guiding axle journal (38), and this guiding axle journal connects by means of screw inserting member (37,66) is connected with piston (20).

18., it is characterized in that this piston (20) is equipped with an all-in-one-piece black box (68) by claim 1 or 2 described skew-plate machiness, it is made of an inserting member (69) and integrally formed guiding axle journal (38).

19., it is characterized in that piston (20) has a groove (35) radially with opposed that side of the line of rabbet joint (30) radially by claim 1 or 3 described skew-plate machiness, it is used for weight balancing to avoid piston (20) imbalance.

20., it is characterized in that, for the imbalance of avoiding piston (20) is provided with at least one counterweight (65) as weight balancing by claim 1 or 3 described skew-plate machiness.

21., it is characterized in that radial groove (35) is used to hold at least one counterweight (65) by the described skew-plate machines of claim 19.

22. by claim 1 or 3 described skew-plate machiness; it is characterized in that; in live axle (28) passes the perforation zone of housing (12) strike plate (50) is set, it is protecting applied shaft sealer, make it to avoid the mechanicalness infringement that caused by the lubricant medium pressure injection as the seal mouth ring (51) of band stuffing box (53) or slide ring seal (52).

23. by the described skew-plate machines of claim 22, it is characterized in that the axle pass-through zone that live axle (28) passes housing (12) does not occur leaking with maintenance by the vent (56) that adopts strike plate (50) and the setting of the minimum point below seal arrangement (51,52,53) respectively.

24. by claim 1 or 3 described skew-plate machiness, it is characterized in that this piston (20) has the groove (76) of circumferentially extending at least at least one distolateral piston face (72) on a part of zone, they are limited by the rib spare (78) of cutter shape.

25. by the described skew-plate machines of claim 24, it is characterized in that the zone that is provided with radial groove (76) (70) of this piston (20) is a circular sector district, its angular bisector stretches perpendicular to the axis of the radially line of rabbet joint (30) in the piston (20).

26., it is characterized in that radial groove (76) is arranged on two piston faces (72) by the described skew-plate machines of claim 25.

27. by the described skew-plate machines of claim 26, it is characterized in that the groove (76) on the relevant pressure surface (72) of piston (20) is arranged in the fan section (70), a side adjacency in this fan section is the line of rabbet joint (30) radially.

28., it is characterized in that this radial groove (76) is separately positioned on piston (20) and is provided with in the zone (70) partly by the described skew-plate machines of claim 27, this zone (70) contact with the inwall of active chamber (16).

29., it is characterized in that this groove (76) has four jiaos of type exterior features by described skew-plate machines one of in the claim 25 to 28.

30., it is characterized in that this groove (76) has a rectangle type exterior feature by described skew-plate machines one of in the claim 25 to 28.

31., it is characterized in that this groove (76) has a rectangle type exterior feature with smooth bottom land by described skew-plate machines one of in the claim 25 to 28.

32., it is characterized in that this groove (76) has the bottom land of arc with respect to its longitudinal axis by described skew-plate machines one of in the claim 25 to 28.

33., it is characterized in that this groove (76) has the groove sidewall of inclination by described skew-plate machines one of in the claim 25 to 28.

34., it is characterized in that this groove has asymmetric tipper sidewall by described skew-plate machines one of in the claim 25 to 28.

35., it is characterized in that this groove (76) has a V-arrangement type exterior feature with narrow bottom land by described skew-plate machines one of in the claim 25 to 28.

36., it is characterized in that the sidewall of the piston line of rabbet joint side of each groove (76) is arranged to steeper than sidewall opposed with it by described skew-plate machines one of in the claim 25 to 28.

37. by described skew-plate machines one of in the claim 25 to 28, it is characterized in that, the drift angle with respect to bottom land of the groove sidewall of this piston line of rabbet joint side is 105 ° to 120 °, is preferably 112 °, and groove sidewall opposed with it with respect to the drift angle of groove substrate greater than 135 °.

38. by described skew-plate machines one of in the claim 25 to 28, it is characterized in that the rib spare (78) of the cutter shape of this qualification groove (76) has the outer edge of a tooth shape and compares the wideer base portion that is positioned at bottom land with one with it, this base portion strengthens corresponding rib spare.

39., it is characterized in that the rib spare of this cutter shape (78) is handled through surface hardening by described skew-plate machines one of in the claim 25 to 28.

40., it is characterized in that the rib spare of cutter shape (78) has a coating made from high-abrasive material by described skew-plate machines one of in the claim 25 to 28.

41., it is characterized in that piston (20) is by stainless material, preferably made by stainless steel by claim 1 or 3 described skew-plate machiness.

42. by described skew-plate machines one of in the claim 25 to 28, it is characterized in that, hold the cutter shape rib spare (78) bottom land partly design mix open the piston component of manufacturing, this member is connected with piston (20).

43., it is characterized in that the rib spare of cutter shape (78) is made discrete inserts with cemented carbide, and be inlaid in the tilting zone (22) of piston (20) by described skew-plate machines one of in the claim 25 to 28.

44., it is characterized in that piston (20) is provided with soft material coating at least by claim 1 or 3 described skew-plate machiness in certain zone.

45., it is characterized in that this soft material coating is made by rubber by the described skew-plate machines of claim 44.

46. by the described skew-plate machines of claim 44, it is characterized in that piston is formed from steel, soft material coating is made by rubber and in the up sulfuration of piston (20).

47., it is characterized in that this soft material coating is a kind of shock proof plastics, for example ABS plastic by the described skew-plate machines of claim 44.