DD294067A5 - ARRANGEMENT OF THE STATOR OF ECCENTRIC SPIRAL PUMPS - Google Patents

Abstract

The invention relates to the arrangement of the stator of eccentric spiral pumps whose material is elastomeric and whose inner surface has a thread profile with two or more gates and which is characterized in that the outer peripheral surface of the stator is a polygon surface, and the stator is surrounded by a metal sleeve is whose Innenmantelflaeche adapts to the outer peripheral surface of the stator, and which is cut open with at least one slit. Fig. 1 {spiral pump; Stator, eccentric; Material, elastomeric; Innenflaeche; Thread profile; bleed; Polygonflaeche; Metallhuelse; slitting}

Description

For this 2 pages drawings

Field of application of the invention

Dio invention is based on oino arrangement, the boi oinom of olastomorom material gofortigton and soinor inner surface iibor Gowindeprofil with two odor mohroron cuts vorbefondon stator of oxzontrischon spiral pump used wordonkann.

Characteristics of the known state of Tochnlk Dor Stator of oxzontrischon Spiralpumpon is corresponding in mohroron, don erwoitorndon Prelude Zwockon Finishes made. Daboi is accused that a proper training jo meet several requirements

which can oonfacho way, with cheap meanwhile horgostollt can and domzufolgo oino economicallyo production and

Use gowährloistot. Dio bishor bokannte solutions have been ausgoarboitot to achieve diosor objective, which toilweiso with success also

is solved. Dioso solutions can be divided into two main group, namely there are stators made of elastomorom mntcrinlin einor Motallhülso releasably attached, and os are stators made of elastomorem material in the Motallhülso attached insoluble.

Both Gruppon boinhalton also oino reenactment assaulting Varianton. The advantage of the solutions belonging to the Orston Gruppo is the cheap production and the Botriob, because the Motallhülso as part of the Pump oin is permanent Bostandtoil, and only the stator made of elastomorom material is exchanged after the pre-wear. The disadvantage of these solutions is that the stator is made of elastomeric material in general on one side (on one side) Endn) is mechanically fastened in the Motallhülso, which partially allows a pre-threat of the stator, and toilwoiso, if the

open side into the pressure chamber of the pump protrudes and the liquid penetrates between the stator and the Motallhülse, this separates from each other and reduces the friction-based connection between the dome stator and the Motallhülso so or abhebt.

Dio in the second Gruppo belonging to solutions are kostspioligor, because the stator of olastomorom material with dor Mctallhülso

a unit is made and exchanged after consumption dio teuro complete unit. The Motall sleeve is not part of the pump but is part of the stator.

Dioxide solutions have the disadvantage that the elastomer-metal bond, generally combined with a bond Vulcanization technology is conditioned by a very strict technological discipline and good material quality. With lack of this Requirements, the Elastomor-Motall bond uncertain, which - because boi this solution no controllable mechanical Binding is present-separations and pocket formation within which Motallhülso can cause, what too fast Consumption leads and the loss is very large because of the high price of the stator.

2 294 067 ZIoI dor invention Ziol dor invention is nschtoilo dor bokannton solutions * too vermorwindon.

Presentation of Woson's invention Aufgobo dor invention is, oinon dornrtjgon Stotor for oxzontrischo Spirnl |) umpoii too schnappon, dor with dor Motallhülso not

vorbundon is, and despite the fact that the preadroling is completely gosichort, whereupon the dendonum is not resistant to deformation, and boi dom dns gofordorto medium from the dome pressureroum can not be found untor the dioutero mantol surface oinströmon.

Oar invention is based on the recognition of knowledge, (Ia (S) the polygon form also wogon pre-threat well, and at the same time boi

The re-enactment may have been done orally, and finally the endo-dosator's austenate

Flanscho In ontsprochondor form not only dio Itorgoglio Dowogung, but also dio Sickorung dos gofordorton Modiunis can not help. According to the invention, diosos is produced by oostration of the stators of oxzontrischoo Spiralpumpon orroicht, dosson M.itori.il

olastomor is and dosson Innonflächo over Gowindoprofil with two odor mohroron bleed-off, and dioorfindungsgomäß thereby gokonnzoichnot wordon can that the dio extoro mantol surface of the stator oino is polygonflncho, and the stator of the motallhülso umnommon is, which innoro mantolar surface adapts to the outer surface of the stator , and with mindostons oinor the longitudinal gorillotonic slit on the top of the neck.

Uoi oinor vortoilhnflon embodiment of the orfindungsgomäßon arrangement ist'dio Polygonflächeo dos Außonmantols dos Stators by Mantolstücko gloichon Zontriwinkols and gloichon Oogons gobildot, and the troff account dor bonachbnrton Mantolstücko odor dio between dioson auspicious through hole in the Ganzon between dor gomoinsamon Troffobono of

between Mantolstückon and dor Mittollinio dos Stators is homely.

Boi oinor woitoron vortoilhafton embodiment of the orator gomäßon arrangement is at boidon ends dos stators oin

this flange is ausobildot dosson Ourchmossor großor as dor dos Umhüllkroisos dor Mantolflächo is, and whose Längedor Motollhüls - with dom distance between the zwoi Flanschon is equal.

Boi oinor third jortoilhafton embodiment dor orformungsgomäßon arrangement habon dio flange o oin from its face

horvorragondos, ring-like sealing profile.

Boi oinor viorton advantageous embodiment dor orfindungsgomäßon arrangement are on dor outer surface dor Motallhülso

at bnldon soito dor slicing oin odor mohroro clump ringo ausobildot, in donon is ever oino tangontialo hole.

Finally, boi oinor is five-tone vortoilhafton embodiment of the erfindungsgomäßon arrangement dio metal sleeve with two Aufschlitzungon in zwoi Halbtoilo gotoilt and nobon boidon Aufschlitzungon are designed Klemmflächon. Ausführungsbolsplole

The invention will be explained below on the basis of Ausführungsboispiolon dor boiliogondon drawings ndhcr. Show it

Fig. 1: Donors according to the invention in a semi-longitudinal section - half view Fig. 2: Don section I according to Fig. 1.

In Fig. 1, the arrangement of the stator stators is shown in half section - half view. Zwocks better understanding is the stator 1

with thick lines, the dioson umgobondo Motallhülso 2 - as we see sio transparent - with thin lines dargostellt.

The inner surface B of the stator 1 made of elastomorom material is oin thread profile with zwoi gates, and the externcro Mantol surface P is a polygon surface. In Fig. 2, it is to solion that the Mantolflächo P is gobildot by six dorart bent Mantolstücko whose central angle φ and Radii r are the same. Dor distance t between when the jacket piece is deforming edge e and Mittollinio

less than the distance T between the boron guiding bonus S common to two adjacent mantole pieces

Centerline. It can be seen that this Polygonflächo gowissermaßon of dor usual in technical life Polygonflächeo

Deviating is where more or less curved convective distances alternate.

At the meeting of Mantolstücko can also be oino gebogone passage area, which increases the strength of the stator 1. Dor stator 1 is surrounded by a derartigo Metallhülso 2, doren inner surface completely to the outer Jacket surface P of the stator 1 adapts. The metal shell 2 is divided into two half-ooils by means of two longitudinal gorad tone slits 3 and 4. Beside the slit 3

and 4 outside each jin clamping ring 5 are formed, which propagates along the ganzon length of the Motallhülso 2 along. In the

Klommringon 5 are provided tangentially angoordneto holes 6. At don two ends of the stator 1 is ever a flange 7 is formed. The diameter D of the flanges 7 is greater than that Diameter d of Umhüllkreises dor Mantolflächo P. From the end face 8 dor Flanscho 7 protrudes oin annular Sealing profile 9 forth. This is similar dom half of a "C-ring. The length 1 of the stator 1 between the flanges 7 and the length L of the Motallhülso are the same. The arrangement according to the invention can be used as follows. After inserting the stator 1, we press the metal sleeve with the help of arranged in don holes 6on screws to Dimension of the prescribed adaptation of the stator 1 and the spiral pump rotating inside it. Now that prevents Polygon training the lateral surface P, that the stator 1 in comparison to Metallhülsn 2 twisted. Thereafter, the stator 1 can be installed in the eccentric spiral pump. The sealing profile 9 located on the flanges 7,

as indicated by its shape, it will behave as a T-ring used to seal face surfaces.

Dioso's Sealing Profile 9 Preceded by Dor Driicksoito, and thus awisdion to Slentor 1 and Dio Motallhulso 2 golnnyt (It is not known that dio Liinyo L dor Motallhulso 2 nus dom reason with dor Liinge I dos Stntors 1 ought to be soin 'for elo (lon flangeon 7 ontsprochondo support (jobon.

Dor obon bokanntgomachton task would also olno dorartigo Mantolflilcho P ontsprochon, dio ontwodor gorippl odor violettig etc. is.

Oio unsurorsoits bowillilto form hot «boro also oinowoitoro task, and / was bol dor Nachstollungdos stator» 1.

Dio Innonflticho D dos Stators 1 wear! while dos Ootriobs strong. This was also previously done with the Doformntion of Stator 1, which was not completely boron-negative, nor did it lead to an accidental wear.

By dio bokanntgomachto polygon surface also diosor mangol is bosoitigt. Dio Daggon, with dom radius r habon, for the folgo, that although the Motallhulso 2 is communicated to me from oinor oinzigon direction, the 'oobogonon Fluchon dio ontstoh jrulo compressive force on diojonigo Woiso in the Innoro dos Stators 1 mormittoln, as the dio Mantolflächo P zyliferorförnik wttfo and oin gloichmäßigor external pressure on it oinwirkon würdo. Dioso property of the polygon surface has, as a consequence, that the formation of the interior surface is spherical. Dor Vorschloiß can therefore by oinfachom Zusammondrückon dor Motallhülso 2 vorzorrungsfroi bosuitigt wordon.

It should be borne in mind that even andoro polygon formon may be used word for word. Sio solion jowoils from the material dos gogobonon Stators and depending on the form of such Innonflächo depending on ready wordon. This refers z. O. n.if din number dor Dögon and don radius.

Also the Motallhülso 2 can ootin oinzigon odor even with mohr as zwoi Aufschlitzungon gotortigi wordon. This is primarily due to the matorial and the form of the stator 1, and to theorbo by the arrangement in the pump.

Claims (6)

1. Arrangement of the oxzontrischon Spirolpumpon dosson Matorial olastomor and dosson Innonflttcho via oin Gowindoprofil with zwoi odor mohroron gates vorfügt, characterized in that the dio extoro Mantolflücho (P) dos Stators (1) oino Polygonflächo is, and the stator (1 ) is surrounded by an umbilicus (?) umgobon, in which the mantoleous surface adjoins the oblate surface of the mantole (P) of the stators (1), and which is cut open with mindostons, one slit (3). 2. Arrangement according to claim 1, characterized in that the Polygonflächo dos Außonmantols (P) dos Stators (1) by Mantolstücko same Zontriwinkols (φ) and gloichon Bogons (r) is gobildot, and the Troffkante (o) dor bonachbarton Mantolstücko odor dio between dioson ausobildildoto Durchchgangsflächeo in the whole zworon dor of zwoi Mantolslückon common Borührungsobono (S) and dor Mittollinio dos Stators (1) liogt. 3. Arrangement according to claim 1 and 2, characterized in that on boidon Endon dos Stotors (1) oin flange (7) is vorgosohon, dosson Durchmossor (D) is greater than dor Durchmossor (d) dos Umhüllkroisos dor Mantolflächo, and dio length (L) dor Motallhülso (2) with dom distance (t) zwischon don zwoi Flanschon (7) gloich. 4. Arrangement according to oinom dorAnsprücho 1 to 3, characterized gekonnzoichnot that dio flanges (7) oin from its end face (8) horvorragondos, ringartigos sealing profile (9) habon. 5. Arrangement according to a dor claims 1 to 4, characterized in that on dor Außenonflächo dor metal sleeve (2) on boidon sides of the Aufschlitzung (3,4) oin odor several Klommringe (5) is / are, in dom / donon tangontialo Bore (on) is / sin Λ 6. Arrangement according to jinorn dor claims 1 to 5, characterized in that the Motallhülse (2) is divided, and nebon boidon Aufschlitzungen (3,4) Klemmringo (5) are formed.