DE1678604C - Liquid ring gas pump - Google Patents

Description

see - to at least one ocnauieiteung opposite the end of the suction opening is offset and connected to a separate suction nozzle. Closes another apparatus is attached to the second suction nozzle, which is under a slightly higher suction roof should be vented, e.g. B. suction rolls for the paper industry, Rotary filters etc., the an and Rh needed two different pumps through one replaces the only pump that has a significant overall efficiency - · »- = * - * ·· -

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In addition, kS ^ KJS increases thereby a lower BaSLn f efficiency and difVerme? d ^ on A further enlargement dSΑΙ3ΐίΐ ■ Trfner such a pump 3 SÄ when S th suction opening a gas orflr nf 'f. u, ^dei " ^TWO " e hold wh3 Mü can benefitÄ ^6Γ !, ^ ⁸ '-

Rays and the ^ cie Saugöffnun, MKT ™, ^ are to be evacuated verbündt Raun ^^ ⁸ δη therethrough results ΐη ^ ^ Χ Γη Jn ₆ Ah "hung the intake amount and thus _it wfrlf d t of the pump grades Wirkungs-

^oF Arbeitsrau.es sucked ^ f WWgi described, during rotation of ^{the impeller} ** ^compacted ™ ^d by the Drucköff ⁿ "5 ^{g of 4 Steuerechei} be ¹ ^ bodice ejected, ^aT ~ ™ ™ ^{e tei} vacuum ί usual - ^{on the} ^ ver Β ™ *** "** the pump 9 mr ^ P ^{atmos härisc} hen pressure. · ^{Zusätzllch to} suction port S and Drucköffhung 4 * 'Τ' ^{4 'invent} ^ gsgemäß another Saugöff- ° ^Un8 i ^{m the rudder} cheibe 16 is provided. The loading ψ ™ ^{in this loading} area of the blades of the impeller 2 ^ g ^{Sau opening of Lu} "° s6, which with a SaugΤ - ^{is ge} S ^{enOber the end} suction opening S ^V _ff ^erbUnden ™ ^d> - seen in the direction of rotation -

T ^{offset by the blade} pitch t so that ^ö ^^ genS ^{and 6 always remain} separated from each other by min-κίΤ ^ ^ »^^ ele · ^It extends - in the direction of rotation ^{£ eSehen} ~ ^{approximately into the area of} re-entry ^ T ^ ^{Water ring} S ^{19 in the impeller} . ^{opening of Lu a} '* ° "" η ^"d ^ * c ^{erekh of} 8 ^{be held ends} compression. In f ™ £ * ^Sa ^. ^un g ⁶ elapsing Laufradzel-

^ ^ ^S ° ^mt ' ^Who " ^{kdn GaS durdl the Sau} S" opening 6 would be sucked in, roughly the gas pressure

unt.r conclusion of keitsringes use fleeds _Ig. The two gaseous or vaporous reactor partners are introduced into the pump through the two suction openings

Fin another major advantage of the additional ' The sucking opening consists in the fact that there is so much through this suckable

changeable wkverhäi ^
opening and pressure opening the ejected gas "amount remains constant, thus the öSffiS e? ™""single constant AbSSKJ In this case, then VentieTg _e Td _we hfr A second t

^included

'^ ^Ansau S ^men 8 ^e ' Pi ^the suction pressure, V ₁ = P ₁ - P ₄ ,

^ Pressure difference between suction pressure and partial steam pressure in the area of suction opening 5 and 9 "ϊ ^Ψ ^ ^{depending on the} P ^{calculated Gtö} ^ ™ area ί ^Sau 8 ^open , ^{and 6 mean} · ^D ™ h suction nozzle 7 can som.t de additional gas quantity Q ₂ when

= 7

to connect space of the pump

Finally it should be mentioned _a R d, the above-described Kons Ruktion also H ^ ₃ can be used to introduce in to Sannt WefsczusS Liche air into the pump Λ Z in condensing the 3ST LaEdtSen

explains ^{8 inventions in more detail}

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^den · _c ^{With e} '" ^{em such a} ' g ^{en Strah} 'er this is indicated by τ" -iS? ¹¹⁶¹ ?? ¹ ? ¹¹ 5! ^nstr . ^ömende propellant in the T ^{reibduse ll} beschleun.gt and tears upon entering

SnH riff "" ¹ ^ ^Fö ? ^e ™ ^{edium with} · ° he subse- ^ ^diffuser 13 dil _IC htet the mixture of conveyor

s ^ ^{is the} "out- ^{room of the spotlight with d} -

Suction nozzle 8 * or. connected to room 10, then

il

The two gas quantities Q _i and ß ₂ which have flowed are pushed out together through the pressure opening 4.

The amount of gas additionally supplied to the suction opening 6 can still be controlled by the throttle valve 18 be so that z. B. regardless of the front pressure on the suction port 8 always the same amount of gas the pressure opening 4 is pushed out.

All of the arrangements described above result in an overall improvement the overall efficiency of the pump. The power requirement of the pump is in fact far Extent due to the water ring friction, gap and other losses. Since this in the above Arrangement remain largely constant, is only the pure compressor work for the suction nozzle 7 incoming additional gas or the mixture of propellant and conveying gas.

As mentioned at the outset, the invention is not limited to the embodiment described and illustrated limited, it can be used in any other version of a water ring gas pump will. This includes designs in which two or more work areas are provided on the circumference of the housing each of which contains a suction and pressure slot.

This also includes all those designs in which the suction and pressure slots are not as described, are contained in the lateral control discs, but in control cylinders or control S cones, which protrude laterally into the impeller, the special design chosen for the description contains two impeller halves, each with an associated control disc. Both halves of the impeller can but also in a known manner by separating ribs

ίο in the middle of the impeller and the cylindrical housing be separated from each other, so that - when applying the principle of the invention - four suction openings with four different suction pressures.

Furthermore, it is also possible to have several additional suction openings between the usual suction and provide pressure openings. Each of these openings is in the direction of travel of the impeller seen - with a room of higher pressure than that

ao to connect previous.

As indicated by dashed lines, instead of the radiator 11 or in addition, a further one can also be used Room 15 to be evacuated is connected to suction nozzle 7 with a slightly higher pressure than room 10

as will be.

1 sheet of drawings

Claims (6)

At the points where the cells are enlarged Claims: are, d. H. the water recedes, suction slots are provided in the control disks through which 1. Liquid ring gas pump, in particular the gas to be pumped is sucked into the cells. Vacuum pump, each with one with a suction 5 In the further rotation of the eccentric in the housing or pressure port connected suction or arranged impeller, the water penetrates again tie-pressure opening and one between suction and fer in the connected cells and compresses Pressure opening arranged additional suction the gas located therein. Through at an angle opening, characterized in that. offset by about 180 ° against the intake slots the additional suction opening (6) - in the direction of rotation io pressure slots in the control disks then becomes the direction of the impeller - pushed out again by at least compressed gas. be a blade division (/) opposite the end of the vacuum pumps of the type described Suction line (5) offset and with a special one in one stage for pressure ratios of about 1.5 th suction nozzle (7) is connected. (e.g. 500 Torr to 760 Torr) to about 25 (e.g. 2. Liquid ring gas puropes according to claim 1, 15 30 torr to 760 torr) used at low pressure thereby marked that the additional ratio is the push-out pressure (e.g. 760 Torr) Suckling opening (6) up to the area of the again reached relatively early; should accordingly entering water ring (19) extends. the print slot also start earlier, thus 3. Liquid ring gas pump according to claim 1 - seen in the circumferential direction - made longer and 2, characterized in that the additional 20 will be. The pressure slot would have to be analogous for a large borrowed suction opening (6) so much flowable pressure ratio are designed much shorter, compressible medium can be supplied that the For economic reasons, one sets the sickle gas amount at the pressure opening (4) even with a shaped pressure opening for a larger pressure ratio, The different suction pressures at the suction opening are therefore relatively small. About over-compression and tion (5) remains approximately constant. 25 Eddy losses at lower pressure ratios 4. To avoid liquid ring gas pump according to claim 1 (higher suction pressure) will be something to 3, characterized in that the before the beginning of the sickle-shaped pressure opening Suction nozzle (7) connected to the suction opening (6) - also seen in the direction of rotation - some Bohsene Tangled up the pipeline with a throttle valve. Those holes in the can be seen with the manual or pressure-dependent 30 range of the push-out pressure, let the gas the gas flowing through the suction nozzle (7) easily flow through, while that on the return flow is changeable. side of the control disc, all other 5. Liquid ring gas pump according to claim 1 gene closes holes (which are in an area and / or 2 and 3, characterized in that lower pressure are located). One gets through the additional suction opening (6) a Vorverdich- 35 this arrangement a kind of water valve effect, there ter, e.g. B. a steam and / or gas operated flow resistance in the bores for Wasbener Radiator (11) is connected upstream. ser is much larger than for gas. 6. Liquid ring gas pump according to claim 5, the valve action is even more effective when the characterized in that the suction chamber of the above-mentioned bores is provided with ball valves (11) with the suction port (8) of the suction 40 can be seen, the balls of which are depending on the pressure opening (S) is connected. Open or remain closed. This "pump play" described in this way therefore sets an exit from the rotating impeller and re-entering liquid ring as well as one each 45 suction and pressure opening ahead, which are arranged at the entry and exit points of the water ring The invention relates to a liquid ring gas are. On this basic principle are all based liquid pump, in particular vacuum pump, each with a keitsring gas pumps, also covers all derivatives diemit a suction or discharge nozzle ^ser pumps genus related. Suction or pressure opening and one between suction 50 To avoid disturbing noises at and pressure opening arranged additional suction liquid ring pumps, it is already known to the opening. Conveying chamber at one of the suction openings Such a pump can, for. B. from a blocked point immediately in front of the pressure opening approximately cylindrical, partially with liquid in contact with the atmosphere, e.g. B. by means of a pipe, to be filled housing, in which an impeller connect eccentrically, so that at a high vacuum, air is arranged in the trisch, and from both sides of the Ge pumping chamber can enter. This then ensures that the control discs closing the housing, of which, together with the pumped gas, there is atmospheric pressure when reaching the pressure opening at a certain angle to each other, approximately in the wheel-offset suction and pressure openings for the to be cells, so that the pressure is reached Medium is provided. By turning the ⁶ ° ventilation of the barrier fluid at the pressure opening of the impeller, the fluid is - in the following and thus noises are avoided,
Assumed water for the sake of simplicity - on the other hand, the task of the present project is thrown and thus forms a coherent invention, a liquid ring gas pump running water ring, which the housing and the relatively small structural change on the control discs guide. The water ring 65 stanchions and additions to form such that only one delimits cells between the impeller blades, the pump with improved overall efficiency which increase with the rotation of the impeller and the function of two pumps for different users. suction pressures can take over. This task will