CN103221638A - Rotary piston pump and rotary piston - Google Patents
Rotary piston pump and rotary piston Download PDFInfo
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- CN103221638A CN103221638A CN2011800438909A CN201180043890A CN103221638A CN 103221638 A CN103221638 A CN 103221638A CN 2011800438909 A CN2011800438909 A CN 2011800438909A CN 201180043890 A CN201180043890 A CN 201180043890A CN 103221638 A CN103221638 A CN 103221638A
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- Prior art keywords
- groove
- rotary
- pallet
- piston pump
- piston
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C19/00—Sealing arrangements in rotary-piston machines or engines
- F01C19/005—Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/005—Removing contaminants, deposits or scale from the pump; Cleaning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/126—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2210/00—Fluid
- F04C2210/24—Fluid mixed, e.g. two-phase fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention relates to a rotary piston pump (10) for conveying fluids, in particular liquids laden with solid matter, having a housing (45) and having at least one pair of intermeshing rotary pistons (1) arranged within the housing (45), wherein a rotary piston (1) has in each case at least one recess (13, 43) formed on the circumferential surface (5) thereof and/or at least one recess (41) formed on an end surface (7, 9). The invention relates in particular to a rotary piston pump in which at least one driver (15, 17, 39, 51) is arranged in the at least one recess (13, 41, 43) and is designed for collecting solid matter. The invention also relates to a rotary piston for a rotary piston pump (10) for conveying fluids, in particular liquids laden with solid matter, having at least one recess (13, 43) formed on the circumferential surface (5) thereof and/or at least one recess (41) formed on an end surface (7, 9).
Description
Technical field
The present invention relates to a kind of be used for conveyance fluid, particularly contain the rotary piston pump of the liquid of decorating film.It comprises that a housing and at least one pair of are intermeshing, is arranged in the rotary-piston in the housing.At this, each rotary-piston respectively has at least one to be made in groove on its circumferential surface and/or at least one to be made in groove on the front.
In addition, the invention still further relates to a kind of be used in be used for conveyance fluid, particularly contain piston on the rotary piston pump of liquid of decorating film.
Background technique
The rotary piston pump of aforementioned type is used to carry various liquid, but especially also is used to carry mud, waste water, sewage, industrial water, mud, bilge water, ight soil, liquid dung, chemical product or feed.
Known rotary piston pump has self-absorption function and changes insensitive to doing at present.It moves based on following principle: the rotary piston pump of working as extrusion pump causes the wall of fluid along housing by at least two rotary-pistons
Be transported to the outflow opening of pump from the inflow entrance of pump.In this course, at least two rotary-pistons in the middle of the housing abut against together with the fluid-tight state, and the opposite spin that is being meshing with each other.
In order to realize FLUID TRANSPORTATION, between two adjacent piston points and shell body wall, formed hollow cavity respectively.In hollow cavity, the inflow entrance of fluid along shell body wall from pump is directed to the outflow opening of pump.In order to ensure reliable conveying function, the gap between piston point and the shell body wall is done minimumly as far as possible.But particularly when conveying contained the liquid of decorating film, this design just caused the surface of piston point or the load of shell body wall to increase.The meeting generation decorating film that is in operation is stuck in the situation between piston point and the shell body wall.Dissimilar according to decorating film, this situation may cause the damage on surface.Next, the sealing of pump reduces, and the refluence phenomenon can take place more and more continually, and pump performance descends.Because shell body wall or piston be safeguarded or be changed to this situation must to pump.
In order to prolong the working life of rotary piston pump, and prolong service intervals, we will the idea of provided with recesses be committed to practice on the circumferential surface of rotary-piston thereupon.The purpose of doing like this is that the decorating film that exists in the fluid is extruded in the groove, thereby can slow down the wearing and tearing on piston face or inner walls surface.For example, printedmatter WO2007/026109 has showed this rotary piston pump with corresponding rotary-piston.The rotary piston pump of a lot of grooves of a kind of its rotary-piston band also is proposed employing in printedmatter DE4218855A1.
But practice shows, these known devices are only being not that gratifying degree has produced positive impact to wear condition.
Summary of the invention
Therefore, the present invention is based on following task, a kind of rotary piston pump and rotary-piston with higher abrasion resistance properties promptly is provided.
In the rotary piston pump of the described type of beginning, the present invention has finished its task in the following manner, promptly arranges to be used to collect decorating film by at least one pallet at least one groove.Fact proved that when in groove a pallet being installed, the collection of decorating film will significantly improve in the groove of rotary-piston.Although this can reduce the available space of rotary-piston groove, pallet is being collected more substantial decorating film and brought into play positive role aspect their importing groove.At this, some is squeezed in the groove by follow-up decorating film decorating film certainly.
By constantly collecting decorating film by pallet, increasing decorating film material is pooled in the groove gradually.So just caused compressing of decorating film material.Consequently, it seems that the also compacted decorating film material seal of the circumferential surface of rotary-piston and the clearance space between the shell body wall is lived mid-term.Because this situation, though must stand the increase of rotary-piston rotary driving resistance, reflux ratio is minimized.
The most handy high-abrasive material of pallet is made, thereby makes pallet have certain resistivity with respect to the higher decorating film of intensity that clamp-on, own.Tending to pallet especially makes with Chilled Hardened Steel.Compare with the damage of rotary-piston or shell body wall, the maintenance cost of the damage of the pallet that causes owing to this class decorating film is obviously much lower.Pallet of the present invention preferably is arranged in the groove in removable mode.
In a first-selected structural type of the present invention, between the edge of at least one groove and at least one pallet, formed a gap.Therefore, this gap one side is by the type at edge, and the shape by pallet decides on the other hand.Pallet is more little with respect to the size of groove, and the distance between pallet and the edge is big more usually, is like this on the segment section at edge at least.The benefit that the gap is set is the decorating film of being collected by pallet in order to hold.Enter into that time in gap from the decorating film of being collected by pallet, decorating film preferably is squeezed in the depths of groove by follow-up decorating film and goes.
In the first-selected structural type of another kind of the present invention, there is wedge shape extension section in the gap.Identical shaped gap is not set on the whole length in gap is proved to be beneficial especially.On the section of those wedge gaps that distributing, the amount of the decorating film of being collected by pallet increases.Wedge shape extension section preferably is arranged in such a way between the edge of pallet and groove, promptly on the sense of rotation of the rotary-piston of rotary piston pump, decorating film at first arrives on wide section of wedge-shaped segment, so that be driven into therefrom between the flank of tooth that wedge-shaped segment more and more narrows.
Preferably at least one groove is made into groove, have one rectangular basically with and/or towards the bottom of groove to the cross section that the small part taper attenuates, perhaps this cross section towards the bottom of groove to small part taper chap.From the manufacturing technology angle, groove cross section rectangular design helps saving time and cost when implementing.The side of groove is made the design that attenuates towards the bottom portion of groove direction and is helped the depths that decorating film enters into groove, and the side of groove then can increase the difficulty that decorating film is run out towards the shape of the tapered chap of bottom portion of groove direction from groove.But, also can increase the cleaning difficulty towards the conical in shape of bottom portion of groove direction chap.The optimal design of groove results from groove and is installed in coupling between the pallet in the groove, difference that can circumstantially and difference.Also fibrous root comes the different geometrical shape of regulation according to the main medium of carrying.
At least one pallet is made the bluff body pattern according to the first first-selected possibility.At this, the height of bluff body is less than or equals to hold the degree of depth of the groove of at least one pallet.Be lower than the mode of the degree of depth of the groove that holds it by the height of bluff body, thereby can prevent that bluff body oneself is absorbed in the situation generation that damages the latter with the shell body wall rubbing contact.Simultaneously, guaranteed again that in this way decorating film also converges in pallet top itself with form closely.In this way, just protected pallet self to exempt from further wearing and tearing.But, if the piston in the rotary piston pump has reached this situation, just must stand its shortcoming, promptly pallet can not be fulfiled its original responsibility again, promptly more decorating film is got groove.
The first first-selected possibility obtains favourable expansion in the following manner, promptly at least one side of at least one pallet of recess edge one or more wedge-shape notch is being set.Wedge-shape notch is to the edge of small part definition groove and a wedge shape extension section between the pallet.Wedge-shape notch distribution, layout and the shape of pallet preferably optimized according to the personalized predominant use of rotary piston pump.Wedge-shape notch preferably not only diametrically but also on tangent direction (when in the rotary-piston pallet being installed) extend.This design helps by follow-up decorating film decorating film to be extruded into the depths of groove.
According to another first-selected structural type, the projection of the adjacent layout of at least one pallet band has respectively formed a gap between projection.The pallet that is preferably made the bluff body pattern preferably works the mode of comb with similar one with a plurality of projectioies.Can make cylindrical or prismatic projection and preferably extend from the bottom of groove towards the piston face direction, the wedge shape that definition is extended between recess edge and two adjacent projectioies respectively extends section.
But according to the second first-selection possibility of the present invention, at least one pallet is made into fixing pin, threaded or band cap screw.Best a plurality of pallet is fixed at least one groove with adjacent mode and reverse dismountable mode.Tend between adjacent separately pallet, form a gap especially.Tend to the pallet that is made into fixing pin, threaded or the band cap screw pattern wedge shape in gap section that extends between definition recess edge and the pallet between self and recess edge in addition especially.Alternative as aforementioned components, pallet can be made the element with cylindrical, ellipse or polygonal cross-section, and these elements can be arranged separately and be fixed in the groove.Tend to be arranged in such a way these elements, promptly decorating film is collected and converges between the adjacent element.
The pattern of fixing pin, threaded or band cap screw or other said elements is for example made in the design of a plurality of pallets of each groove band among the present invention, tends to be used for oblique rotary-piston-also the be called circumferential surface of spiral piston especially.With must compare by the personalized bluff body of making, with single pallet position accurately and the possibility that is arranged in exactly in the groove of coupling have tangible manufacturing advantage, particularly because the former must make to entirely accurate the shape of the circumferential surface that meets the piston bending.
Some or a plurality of pallets that are made into band cap screw pattern, are fixed in one or more grooves preferably are not with stretch section, and/or be screwed to respectively in the screw, the screw thread of this screw extends to the ailhead supporting surface place of bolt at most under the state that bolt is screwed into.In this way, bolted clamping length is kept minimum.The clamping effect that the needs fraction of trying one's best extends by the length of bolt and produces.This means conversely, only need the rotation several years just can unload bolt.For example, owing to damage or stained unrenewable spanner when clamping, also can come demounting bolt by the way of pounding with comparalive ease when bolt head.
According to the 3rd first-selected possibility, at least one pallet is made into the helical spring pattern, and this helical spring major part at least is disposed in the groove.At this, the helical spring longitudinal axis is arranged to be parellel with the bottom of groove.A lot of decorating films are collected between helical spring each spiral with comparalive ease.By helical spring being lain in the mode in the groove, helical spring spiral just can play following effect, and the decorating film that promptly is collected is directed in the groove along spiral.In addition, helical spring preferably also can be done resiliently deformable diametrically except flexible in the vertical.In this way, helical spring also can partly extend to the groove outside.Because the helical spring major part is arranged in the groove, have only fraction to extend to the groove outside, when helical spring was run into shell body wall with tangential way, helical spring generation resiliently deformable was pressed into inside grooves.
According to another first-selected washability structural type of the present invention, each have a sealing lines on each blade of rotary-piston, rotary-piston keeps minimum range along the inner walls of this sealing lines and rotary piston pump.A plurality of grooves are in adjacent mode with potted line, and preferably parallel with it mode is arranged on the circumferential surface.At this, preferably adopt the seal of elastically deformable to serve as pallet, the seal part is extended towards the shell body wall direction outside groove.The same with the said spiral spring, the pallet of making the seal pattern of elastically deformable also keeps minimum range with inner walls, or contacts with inner walls.In this way, formed more potted line by the elastically deformable seal with regard to corresponding.
The elastically deformable seal is preferably made and can satisfies following requirement, and promptly it is extruded to the inside of groove when contacting with other rotary-piston that is arranged in its opposite, and then bounces back into the initial position before being extruded.In addition, the elastically deformable seal preferably also is in order to reach following purpose, promptly when running into the decorating film that acts on it, bounce back, thereby make decorating film to pass through, be subjected to follow-up decorating film extruding and the depths that enters into groove is gone from the seal that is extruded next door.In addition, this structural type of serving as pallet with elastic sealed body also has following advantage, promptly as long as the distance between piston face and the inner walls is not more than the extension value of seal in the outside of the groove that holds it at the groove of elastic sealed body, when layout is held the groove of seal, just created extra potted line so in the place of next-door neighbour's potted line.
Start in the rotary piston pump of described type at this paper, promptly there is at least one to be configured in groove on its circumferential surface and/or at least one is configured in the rotary piston pump of the groove on its front, the present invention has finished its basic task in the following manner, promptly at least one groove, arrange at least one pallet, be used to collect decorating film.Other well-designed form about rotary-piston of the present invention sees also the argumentation about the aforementioned structure form of rotary piston pump.
In addition, the invention still further relates to the method that seals between a kind of inner walls that is used for to rotary-piston and rotary piston pump, may further comprise the steps:
By the rotary piston pump conveyance fluid, particularly contain the liquid of decorating film; Collect the decorating film in the fluid that is transferred by one or more pallets, pallet is arranged in one or more grooves of rotary-piston.About the advantage of method of the present invention and favourable Extended forms thereof, see also aforementioned explanation about rotary piston pump and rotary-piston.
Description of drawings
Below the present invention will be further described by first-selected structural type and with reference to appended drawing.At this, what each illustration showed is respectively:
Fig. 1 is used for the stereogram of the rotary-piston of the present invention of rotary piston pump of the present invention;
Fig. 2 is used for the sectional drawing of the pallet of rotary-piston of the present invention;
Fig. 3 a is used for the stereogram that of rotary-piston of the present invention can select the pallet that adopts;
Fig. 3 b be used for rotary-piston of the present invention another can select the stereogram of the pallet that adopts;
Fig. 4 is used for the stereogram of another optional pattern of the pallet of rotary-piston of the present invention;
The sectional drawing of a thin portion of a first-selected structural type of Fig. 5 rotary-piston of the present invention;
The sectional drawing of an optional structural type of Fig. 6 rotary-piston of the present invention;
The sectional drawing of a thin portion of another optional pattern of Fig. 7 rotary-piston of the present invention;
The sectional drawing of a thin portion of another optional structural type of Fig. 8 rotary-piston of the present invention;
The stereogram of the rotary-piston in Fig. 9 another first-selected structural type of the present invention;
The stereogram of another first-selected structural type of Figure 10 rotary-piston of the present invention;
Another structural type of Figure 11 rotary-piston of the present invention;
The partial view of Figure 12 rotary piston pump of the present invention;
The sectional drawing of the rotary piston pump among Figure 13 Figure 12; And
Illustrated detail drawing among Figure 14 Figure 12.
Embodiment
What Fig. 1 described is the rotary-piston of the present invention that designs according to first kind of first-selected structural type.Rotary-piston 1 is with three oblique blades, and they respectively have a tip 3. rotary-pistons 1 that a circumferential surface 5 is arranged,, front upper 7 and positive basifacial 9.A groove 11 extends to positive basifacial 9 from front upper 7, is used to install live axle.Along the circumference of rotary-piston 1, on each tip 3 of blade, disposed groove 13 respectively.
Figure one has exemplarily described two optional structural types of rotary-piston of the present invention.In the groove 13 that Fig. 1 left side is described, arranged a pallet of making bluff body 15 patterns.Between the edge of bluff body 15 and groove 13, formed a uniform basically gap 19.
Fig. 1 has described on the right side groove 13, and many pallets of making bolt 17 patterns have been installed in the groove.Bolt 17 is screwed into respectively in the screw thread of groove 13 bottoms with minimum grip length.Because the clamping length minimum, even the spanner scarf damages or gross distortion, bolt 17 also can be removed.Fig. 1 right side has formed a gap between the edge of the pallet of making bolt 17 patterns and groove 13, but the shape in this gap and inequality.Between the edge of adjacent separately bolt 17 and groove 13, formed wedge shape extension section.The effect of wedge shape extension section 21 is to keep the decorating film of being collected by pallet here, and they are brought in the groove.
Described to be used for the various structural type of the pallet of rotary-piston 1 of the present invention among Fig. 2 to Fig. 4.What describe among Fig. 2 is the sectional drawing of making the pallet of bluff body 15 patterns.When pallet was placed into, line of vision was equivalent to the radial direction of the running shaft of relative rotary-piston basically.Bluff body 15 has a matrix 23.In the relative side of matrix 23, a plurality of wedge-shaped impressions 25 have been laid respectively.It is in order to block decorating film that wedge-shaped impression 25 is set.
What Fig. 3 a described is the stereogram of making the pallet of bluff body 15 patterns according to an optional structural type.As the pallet that Fig. 2 described, the pallet of describing among Fig. 3 a has a matrix 23 equally.Matrix 23 among Fig. 3 a has a trapezoidal basically cross section.Two tapered each other trends in relative side 26.When pallet was placed into, 27 than 29 wideer below the bottom of the groove that holds it above the pallet of shell body wall.In the side of the matrix 23 of bluff body 15, a plurality of wedge-shaped impressions 25 have been laid.Wedge-shaped impression staggers mutually, to guarantee the overall dimensions of wedge-shaped impression.The bluff body in Fig. 4, the bluff body 15 among Fig. 3 a equally also is fixed in the groove by (not marking) fixing device along axle 30.
The difference of the pallet among the pallet among Fig. 3 b and Fig. 3 a is, above the side 26(wedge-shaped impression 25 of matrix 23 is laid in the mode that staggers mutually) be parallel to each other.This parallel can be by matrix the rectangular cross-section or parallelogram section both select one mode to realize.In addition, Fig. 3 b has also described two countersinks 28 that are arranged in top 27 places, to hold a corresponding bolts head.As Fig. 1 or 9, on the circumferential surface that is applied to rotary-piston, the piston of describing among Fig. 3 b is optimised.It is crooked in the vertical, with guarantee it with the circumferential surface of this rotary-piston on same crooked groove realization optimum Match.
What describe among Fig. 4 is the another kind of structural type of pallet, promptly makes bluff body 15.Bluff body 15 among Fig. 4 has a matrix 23.From matrix, a plurality of protruding 31 protrude upward on 27 on matrix.After rotary-piston installed, projection 31 was the layout that is parallel to each other basically, and towards the shell body wall direction of rotary piston pump.Projection 31 can select to arrange in structure mode at an angle each other that so that form V-arrangement or A shape gap 33 between adjacent projection 31, these two kinds of shapes are favourable to collecting decorating film.In order to make the pallet of bluff body 15 patterns among fixing Fig. 4, projection 31 preferably is made into the part of bolt, during this bolt passes at the bottom of the groove that matrix 23 is screwed into pallet along axle 30.
What Fig. 5 to 8 showed is the various favourable design form that holds the groove of pallet.What Fig. 5 described is the groove 13 that its cross section is rectangle basically.Can select groove 13 is configured in circumferential surface 5 or two fronts 7,9 one, it has two substantially parallel sides 35. Pallet 15 or 17 height that the depth ratio of the groove 13 on the rotary-piston 1 is placed in the groove are more bigger.When pallet 15,17 is disposed in the bosom of groove 13, the following best bottom 37 of pallet 15,17 near groove 13.Fig. 5 to 8 has described one respectively and has been formed at the edge of groove 13 and the gap 19 between the pallet 15,17.
Different with Fig. 5, what Fig. 6 described is the groove 13 that its cross section is not complete rectangle.The substitute is, the cross section of the groove among Fig. 6 is a segment rectangle.From face 5,7,9, the cross section of groove 13 is tapered attenuating in the substrate 37 of groove at first, forms a rectangular shape then.
Observe from face 5,7,9 angles, the tapered at first basically chap in the cross section of the groove of describing among Fig. 7 13 just forms rectangle what link to each other therewith then on the direction of grooved substrate 37.In contrast to this, the cross section of the groove among Fig. 8 13 is made into basically fully towards the shape of the tapered chap of substrate direction of groove 37.
Be essentially columniform pallet for sectional shape, for example the seal 39 of elastically deformable or the helical spring 51(that keeps flat see Figure 14), tend to adopt the cross section of showing in Fig. 7 and 8 especially.But, must see, the pallet of making bluff body 15 or bolt 17 patterns also can be arranged into Fig. 78 or other figure in the groove 13 of corresponding geometrical shape.
The rotary-piston that shows in Fig. 1 only is used on the circumferential surface holding the groove of pallet with being arranged in, and has shown other first-selected structural type of rotary-piston 1 of the present invention among Fig. 9 to 11.At this, also has other with the preferred manner of groove arrangement on rotary-piston.
For example, Fig. 9 shows is a kind of three blade type rotary pistons 1 with three blade tip 3 and a kind of in the others design similar to Fig. 1.But different with the rotary-piston among Fig. 1 is, on the rotary-piston 1 in Fig. 9, the groove 13 of band pallet 17, also the positive 7(at each blade also can select to do like this on the positive basifacial 9 on being arranged in circumference) on arranged groove 41.In groove 41, can with circumferential surface 5 on groove 13 similar modes arrange pallet, pallet can be made the pattern of bolt 17 or bluff body 15 or other pallet of the present invention.The groove 41 that shows among Fig. 9 is positioned opposite radially on the axle of groove 11 basically.Another kind of optional mode is, tends to groove 41 is arranged in outside the radial ray, and/or be an angle with radial ray.
What Figure 10 described is one two blade rotary-piston 1, and it respectively has an apical segment 3 on two blades.Two blade rotary-pistons, 1 band among Figure 10 is directly to blade.In apical segment 3, each comfortable potted line area arrangements a groove 13, it is extending to above positive basifacial 9 below front upper 7 on the circumferential surface 5 always.On the front 7 of the rotary-piston 1 in Figure 10, on each blade, all arranged groove 41.As groove 13, groove 41 also has (a not marking) longitudinal axis.According to the arrangement of the structural type that shows among Figure 10, to observe from the angle of each blade, groove 13 and 41 axle are not tangent.Just the length of groove 13,41 can be extended down to the edge of face separately in this way, and not conflict mutually of groove 13,41.About pallet laying in groove 13,41, see also the explanation of front to Fig. 1 to 9.
What Figure 11 described is the another kind of structural type of rotary-piston 1 of the present invention; According to Figure 11, rotary-piston 1 is straight two vane-pistons to piston of band equally.Rotary-piston 1 among Figure 11 also has an apical segment 3, circumferential surface 5 and a front upper and positive basifacial 7,9 on the piston blade.Different with the rotary-piston among Figure 10 is, on positive 7, on each blade of rotary-piston 1 all with substantially radially towards having arranged two grooves 41.Groove 41 on positive 7 is single row type respectively.In contrast, on the circumferential surface 5 of the piston 1 in Figure 11, on each blade, all designed a kind of many rows formula groove 43 in the potted line zone.According to Figure 11, arranged that in groove 43 two rows make the pallet of bolt 17 patterns.Bolt 17 is arranged in many rows formula groove 43 in the mode that staggers mutually with the side side by side.In this way, the quantity in the gap that forms between the bolt 17, particularly its performance of collecting and firmly blocking decorating film improves.
Described a part of rotary piston pump 10 of the present invention among Figure 12.Rotary piston pump 10 has a rotary-piston 1 of the present invention, and the latter is arranged in the housing, and is rotatable.Housing has one to make semi-cylindrical section 45.In section 45, inwall 47 is made into rotary-piston 1 concentric.When rotary-piston 1 rotation, formed hollow cavity between piston 1 and the inner walls 47, fluid is transported to the outflow opening of pump from the inflow entrance of pump in hollow cavity.On the one hand by the face of inwall 47, the circumferential surface 5 that is rotated piston 1 on the other hand defines hollow cavity separately.In order to prevent that liquid from flowing to another hollow cavity from a hollow cavity, must make the distance between the rotary-piston 1 of housing section 45 keep minimum as far as possible.In seal section 49, be preferably formed as sealing function.
Owing to fluid also may flow out by the front 7 of the piston 1 between the hollow cavity, preferably also front 7 is made to have sealing function.In a first-selected especially structural type, positive sealing function guarantees by pallet 39,51.This point is depicted as in Figure 13, and Figure 13 has described the sectional drawing of the piston among Figure 12.On positive 7 and positive 9, be provided with a groove 41 respectively.A pallet has been installed in the low groove 41 that Figure 13 describes.Pallet has a cylindrical basically cross section.Pallet or make the seal 39 of elastically deformable, or make helical spring 51.The seal 39 of elastically deformable has improved sealability.In contrast, the pallet tool of making helical spring 51 styles has the ability of higher collection decorating film.
Figure 14 has carried out amplification to a thin portion among Figure 12 to be described.The seal section 49 of rotary-piston 1 has one first potted line 53.Along potted line 53, the clearance distance between the circumferential surface 5 of rotary-piston 1 and the internal surface 47 of housing section 45 is insignificant, in the ideal case near 0.Two pallets that the right and left of potted line 53 is arranged in the groove 13 separately also link to each other with the inwall 47 of housing section 45 along line 55, or keep minimum range with inwall 47.In this way, line 55 has formed potted line equally.The direction of these potted lines is parallel with first potted line 53 basically.By additional seal line 55, the sealing of the rotary-piston 1 of rotary piston pump 10 improves, thereby has improved its efficient.
Claims (13)
1. be used for conveyance fluid, particularly contain the rotary piston pump (10) of the liquid of decorating film,
Intermeshing with a housing (45) and at least one pair of, be arranged in the rotary-piston (1) in the housing (45).At this, a rotary-piston (1) respectively has at least one to be made in groove (13,43) on its circumferential surface (5) and/or at least one to be made in groove (41) on the front (7,9).
It is characterized in that at least one pallet (15,17,39,51) is disposed at least one groove (13,41,43), is used to collect decorating film.
2. the rotary piston pump (10) that meets the 1st claim,
It is characterized in that, between the edge and at least one pallet (15,17,39,51) of at least one groove (13,41,43), formed a gap (19).
3. the rotary piston pump (10) that meets the 1st or the 2nd claim,
It is characterized in that gap (19) have wedge shape extension section (21).
4. the rotary piston pump (10) that meets one of aforementioned claim,
It is characterized in that at least one groove (13,41,43) is made into channel form, and a following cross section arranged:
-rectangular basically, and/or
-attenuate to the small part taper at the bottom of the groove, or
-at the bottom of the groove to small part taper chap.
5. the rotary piston pump (10) that meets one of aforementioned claim,
It is characterized in that at least one pallet is made bluff body (15).At this, the height of bluff body (15) is less than or equal to the degree of depth of the groove (12,41,43) that holds a pallet at least.
6. the rotary piston pump (10) that meets the 5th claim,
It is characterized in that, at least one side (26) of at least one pallet of the edge direction of groove (13,41,43), disposing one or more wedge-shape notch (25).
7. the rotary piston pump (10) that meets the 5th or the 6th claim,
It is characterized in that the projection (31) of a plurality of adjacent layouts of at least one pallet band, a gap of each self-forming (33) between projection.
8. the rotary piston pump (10) that meets one of the aforementioned the 1st to the 4th claim,
It is characterized in that at least one pallet is made into fixing pin, threaded or band cap screw (17).At this, preferably a plurality of pallets are fixed at least one groove (13,41,43) in mode adjacent and can reverse dismounting.At this, form a gap between the adjacent pallet respectively.
9. the rotary piston pump that meets one of the aforementioned the 1st to the 4th claim,
It is characterized in that at least one pallet is made into helical spring (51) pattern, this helical spring major part at least is disposed in the groove (13,41,43).At this, the helical spring longitudinal axis is arranged to be parellel with the bottom of groove.
10. the rotary piston pump (10) that meets one of the aforementioned the 1st to the 4th claim,
At this, rotary-piston (1) has a potted line (53) respectively on each blade, and rotary-piston (1) keeps minimum range along the inwall (47) of potted line and housing (45).A plurality of grooves (13) on circumferential surface with the adjacent mode of potted line (53), preferably parallel with it mode is arranged.
It is characterized in that, disposed elastically deformable seal (39) as pallet, its part is extended towards the direction of the inwall (47) of housing (45) in the outside of groove (13).
11. meet the rotary piston pump (10) of one of the aforementioned the 8th to the 10th claim,
It is characterized in that one or more pallets of making band cap screw (17) shape are fixed at least one groove (13,41,43).At this, the band cap screw (17) preferably be not with stretch section, with and/or
Be screwed into respectively in the tapped hole.Under the state that screw is screwed into, the screw thread of screw extends on the nut supporting surface of band cap screw.
12. be used for conveyance fluid, particularly contain the rotary-piston (1) of the rotary piston pump (10) of the liquid of decorating film, be made in groove (13,43) on the circumferential surface (5) and/or at least one with at least one and be made in groove (41) on the front (7,9),
It is characterized in that at least one pallet (15,17,39,51) is disposed at least one groove (13,41,43), is used to collect decorating film.
13. the method that seals between the inwall (47) that a kind is used for to the housing (45) of rotary-piston (1) and rotary piston pump (10) may further comprise the steps:
-by rotary piston pump (10) conveyance fluid, particularly contain the liquid of decorating film,
-collect the decorating film in the fluid be transferred by at least one pallet (15,17,39,51), pallet is arranged at least one groove (13,41,43) of rotary-piston (1).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202010012494U DE202010012494U1 (en) | 2010-09-13 | 2010-09-13 | Rotary pump and rotary piston |
| DE202010012494.8 | 2010-09-13 | ||
| PCT/EP2011/065798 WO2012034985A2 (en) | 2010-09-13 | 2011-09-13 | Rotary piston pump and rotary piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103221638A true CN103221638A (en) | 2013-07-24 |
Family
ID=44653311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800438909A Pending CN103221638A (en) | 2010-09-13 | 2011-09-13 | Rotary piston pump and rotary piston |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20130209300A1 (en) |
| EP (1) | EP2616640B1 (en) |
| CN (1) | CN103221638A (en) |
| DE (1) | DE202010012494U1 (en) |
| ES (1) | ES2812504T3 (en) |
| WO (1) | WO2012034985A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002669A (en) * | 2014-11-24 | 2017-08-01 | 耐驰泵及***有限公司 | Rotary piston pump, the method for rotary-piston for fixing rotary piston pump and for the method for the rotary-piston for dismantling rotary piston pump |
| CN107208529A (en) * | 2015-01-23 | 2017-09-26 | 罗伯特·博世有限公司 | Booster for engine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014151057A2 (en) * | 2013-03-15 | 2014-09-25 | Eaton Corporation | Low inertia laminated rotor |
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- 2011-09-13 EP EP11757838.5A patent/EP2616640B1/en active Active
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- 2011-09-13 US US13/822,640 patent/US20130209300A1/en not_active Abandoned
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| CN107002669A (en) * | 2014-11-24 | 2017-08-01 | 耐驰泵及***有限公司 | Rotary piston pump, the method for rotary-piston for fixing rotary piston pump and for the method for the rotary-piston for dismantling rotary piston pump |
| CN107002669B (en) * | 2014-11-24 | 2019-10-11 | 耐驰泵及***有限公司 | The method of rotary piston pump, the method for fixed rotary-piston and disassembly rotary-piston |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2012034985A3 (en) | 2013-04-25 |
| EP2616640A2 (en) | 2013-07-24 |
| ES2812504T3 (en) | 2021-03-17 |
| US20130209300A1 (en) | 2013-08-15 |
| DE202010012494U1 (en) | 2011-12-15 |
| WO2012034985A2 (en) | 2012-03-22 |
| EP2616640B1 (en) | 2020-07-08 |
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| C06 | Publication | ||
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Application publication date: 20130724 |