DE2332455A1 - Cleaning mechanism for ultra-violet irradiation appts. - is held in reception chamber by dynamic pressure of liq. - Google Patents

Abstract

In an appts. for ultra violet irradiation of a flowing liq., partic. water circulating through a swinning bath, e.g. for sterilisation, in which a radiation pipe extends between two pipe connexions serving for the feed and discharge of the liq. and has a cleaning carriage having a cleaning surface adjacent to, and able to slide reciprocatable along its outerperiphery, with >=1 reception chamber for the centre fo the pipe, and in in its rest position opening into the centre of the pipe, and in flow connexion with the pipe connexions, incorporating the further improvements whereby (a) a reception chamber is formed in the region of the two connecting branches, and one or other of these can be selectively supplied with liq. as the liq. inlet so that the direction of flow in the pipe can be reversed, (b) the cleaning carriage held in one or other of the reception chambers by the dynamic pressure of the liq. into according to its direction of flow, is carried by the liq. into the oppositely situated reception chamber when flow direction is reversed.

Description

DR. BERG ü'Pl.-ING. STAPF DIPL.-ING. SCHWABE DK. DR S ^ HDMAIR

PATENT LAWYERS

8 MUNICH 86, POST BOX 86 02 45

Dr. Berg Dipl -Ing. Stapf. 8 Munich 86, P.O. Box 86 02 45

Your sign Your ref.

Our mark Our ref.

8 MUNICH 80 O 6 JUHJ 1973

MauerkircherstraBe 45

Λ η wa 11 sakts 24 LJ20

L u du ig Rauh, Roden iib-ar

Device, especially for irradiating won ströriondsm or with ultraviolet rays.

Dia invention relates to a l ^ erlit for irradiating einar strönonden liquid insbesund "re strümsndöffl for irradiating water with van ulbrav / iolütten radiation for the sterilization of an enemy with a liquid between two and as FlüsäigksitscinlaG Flüssigkei bsauslaG diunsrn! ii to

409883 / 11b5

schlui.i3tut2.3n f "round tube and one sicn in the longitudinal direction the pipe in this at least too close to the connecting piece Extending radiation tube, on which it can be pushed back and forth in front of an outer circumference of the radiation tube with a cleaning sheet of sliding cleaning is arranged slides, and with at least one to the center of the pipe Open space for the cleaning slide in its Wuhelage, in which both connecting pieces with the The pipe is in the direction of the flow.

The device according to the invention is particularly suitable for water disinfection. muddy intended for the circulation of bath water for swimming pools, but is also suitable for other corresponding applications, boi uclchen a flowing liquid means irradiated with a jet stirrer

One known device for treating flowing water with ultraviolet rays is a pipe that carries the water with two lateral connection pieces arranged at a distance from one another provided and in the tube extends concentrically a radiation tube, usually from a tubular discharge lamp consists of a cylindrical jacket permeable to ultraviolet rays, usually a Uuarzglasrohr, is surrounded. However, since after a certain operating time of the cerate on the tube jacket

409883/1156

Sedimentations form, increasing the effectiveness of the irradiation According to the known device, a cleaning slide is provided that is slidably seated on the tube jacket, which consists essentially of a sponge or the like that slidably rests against the tube jacket. The cleaning carriage is made by means of an end face; of the pipe slidably guided out rod, or by means of a cooperating with the magnetizable housing of the cleaning carriage through the pipe wall Magnets moved manually from the outside along the radiation tube as required, wiping off the sedimentation will. In the rest position, the cleaning slide is in a at the one outer end of the tube behind the connecting piece located there is shifted receiving space, so daO in the rest position it is arranged essentially outside the flow path for the water.

In contrast, the invention provides a device for irradiating created a liquid which allowed the cleaning of the radiation tube more conveniently and with simpler means

This is done according to the invention on a device of the type mentioned at the beginning achieved in that in the area of both connecting pieces a receiving space is gebi.ll nt that optionally ■ J? R in ': or other connections than liquid; its inlet

40988 3/1155

can be acted upon by the liquid, so that the direction of flow of the liquid in the tube can be reversed, and that depending on the direction of flow of the liquid in one or the other receiving space due to the dynamic pressure of the liquid held cleaning carriage after switching the direction of flow through the liquid to the opposite one in each case Recording space can be taken along.

The invention provides external actuation means for displacement of the cleaning carriage is superfluous, as it vanishes from the liquid itself after the direction of flow is switched taken from the respective recording room and in the other recording located at the opposite end of the pipe. holding room is held. To initiate the cleaning process, d. H. the displacement of the cleaning carriage, it is only necessary to change the direction of flow of the liquid toggle in the pipe. All that is required for this is a simple liquid switch.

The receiving spaces for the cleaning carriage, the z. B. by corresponding stops are defined on the inner circumference of the tube or on the outer circumference of the radiation tube, can in this way be arranged so that they are essentially completely outside of the flow path are at least the outflowing liquid. For example, the recording rooms can through

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23324S5

Extensions of the pipe can be formed beyond the laterally connected connecting pieces. However, measures must then be taken to ensure that when the direction of flow is switched over to the inlet stream of the liquid, the cleaning slide easily emerges from the respective receiving space, and the dynamic pressure in each case falls on the end face of the cleaning slide facing towards the wall, since it can be carried along by the entering liquid . For this purpose, for example, on the outside of the storage spaces, a weak helical spring interacting with the associated end face of the cleaning carriage can be arranged, which is designed in such a way that the cleaning carriage is pressed together under the back pressure by the cleaning carriage, and this after it has ceased to exist Back pressure au ^c ; pushes out enough of the relaxation room.

However, it is preferred for the cleaning carriage to be pushed out of its respective receiving space that on the at least one outer side facing away from the center of the pipe The receiving spaces have a passage connected to the associated connection port, so that a substantial Part of the respective outer face of the Rainigungsschlittene in its rest position in this receiving space of the liquid is exposed. After switching the direction of flow, the incoming liquid flow takes the cleaning

409883 / 1166-

- 6 sledges automatically from the respective recording room.

It may be sufficient if only one of the recording rooms is used is provided on its outside with a passage and the cleaning carriage from the other receiving space due to its own weight after the back pressure has ceased to exist in the inlet stream of the liquid uird. However, this assumes that the device is arranged in such a way that the pipe is vertical or at least runs diagonally downwards, including the recording room which is connected to the passage on its outside is arranged, arc lower pipe end uird. Here, however, must the Reinijungaschlitten has a sufficient weight have, so that after an entry of the liquid into the upper connection stub reliably from the there Quiet entrance steps out.

The cleaning carriage can have an outer diameter, This essentially corresponds to the inside diameter of the frame. In particular, a cleaning surface can then also be present on the outer circumference of the cleaning carriage be, which rests slidably on the inner surface of the tube, so that it is also cleaned when the cleaning carriage is moved.

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233 ^ 455

However, the cleaning carriage can also be a smaller one Have outer diameters than the pipe so that the liquid passes between the cleaning carriage and the pipe can. Axial passage openings can also be used for the same purpose be formed in the cleaning carriage. The creation of a passage for the liquid in the Cleaning carriage or to mix this and the pipe surrounding it is particularly necessary, uenn the or the The receiving spaces are each located in the direction of flow in front of the associated connecting piece or at its height in such a way that that the cleaning carriage protrudes in its rest position in the area of the pipe to admix the connection piece. The location the recording room should always be such that the gungsschlittan in its rest position outside the range of the Radiation emitted by the radiation tube lies, for example, on the cleaning surface of the cleaning carriage a sponge, under the influence of radiation can become unusable over time.

So that the rain sledge is largely outside of the current the liquid can be held »it is It is advantageous to provide a connection piece for the connection piece assigned to the receiving space with the passage on its outside To form the flow passage, uelcher outside this receiving space on the side facing the longitudinal center of the pipe opens directly into the pipe. The leaking liquid

409883/1155 " ⁸ "

then emerges in front of the cleaning slide into the associated anchoring nozzle and after switching over the direction of flow through the meander. ¹ de? recording rooms located there under Hitnahmt? .J-jg cleaning carriage. The Aiuirdnun'j fjines -eiteren flow passages from the JGuci.liijf.9n Aijfnahrperaun, however, require that a sufficient proportion of the liquid actually through the öijio ¹ 13 ⁿ in the "* outside on the part of the 'u ^ n ^ hninrsuniGS through - step through,: 3o: ■ '!. ■ "the sledge is taken along -' is taken. Dii _: r; \ -r \ r, z, 3. rJurc "· corresponding 'Jahl der 5trcrnunr _; · -.; - qur-i cuts gevj ^ hr lei ^ t et'.'orden.

A ..md'jr ^r;. An advantageous option, however, is to provide a non-return valve that opens to the connection port, in the direction of the valve. -loch the switching of the flow direction ^ we ..? by] ■ non-return valve, the second-StrrJr ungidurcli. 'national accounts? chlo.v.3f3n,' .c there (? the fluid entering now vcllst'indig By J ^ * ^ n Ίηη the outside of Recordin ^r neraunie "trained üurchlaH hindurchströnt .

The cleaning effect of the cleaning slide can thereby increased t'nrden that he u. "during his shift on the Radiation rührf: - · to ^ Htzlinh rotated around its axis we ti.

A09883 / .1155

It can be achieved, for example, by a helical guide groove or guide rib on the inner circumference of the pipe, which interact with a corresponding counter-guide on the circumference of the cleaning carriage. Another advantageous possibility is to contact U ^ fan:] dos ^; The cleaning slide should be designed at an angle to the pipe axis, so that the cleaning slide can be turned on its way to the opposite receiving space under the junction of the shovels to be mixed.

D.'i ^r i switching the direction of flow characteristic by itself loading kannto i'attel bnuarkstelligt be. It is preferred that the / incl This means that the flow control is switched over by a single valve with a single handle,

■ J t-3 Ur ,, switching the flow direction to initiate the n.jir.iguniTUOLijanqes can be carried out manually nnrdnn, Dn- - it jTiooh switching reliably in good time, uir 1 \ / orgG;: ogen, to the listening tone of the 3LrumunQjrichtunQ '. -lnon to provide what yarzugi.-eise once; 1 Ti. · _; .r

A09883 / 1 155

Other features and liortgile represent invention will become ^au:. J the following description v / on Execute "currency embodiments with reference to the -jichr-ri ^ bii ■ ch s drawing in d" r drawing shows

Fig. 1 shows the current structure of a
T-3r! Jtes in J ^ r AuHen-in

Fi <j,? a toill "i-js-iohnitt through the device in Höho ainss ■ ^: 'η 5 2 h 1 u; _ ■ stut : ■: β η 3,

Fin - "5 '3in .-> n partial section gev,';.: Fig. 2 for his other details f''uhrungsforni,

~ ig. A rare view of the variant in the embodiment shown in FIG. 3, cleaning sciilittans, and

Fig. H causing the connection of the device to a d-! 3 changeover of the direction of flow
3ehalttr.

The device shown in Fig. I consists essentially of a tube resistant to ultrauiul: -tt, 2 rays,
Zo B. au-3 Pul / vinyiof-.larid, on uelches at both tincion
T-Sf ick η 2 f; it; ti tiiciicn An:; chluüstutzen 3, 4 from dem- ■: t-lbön Γ '»-. Fc _> ri -1 auf ^ filott, ino. At the free ends of the T-3tückü λ sine 'Oi -'; üog .oinlL-ijen fi'r dao the coat of the

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409883/1155

A quartz glass tube forming the radiation source is provided. Inside this dumbbell, in the execution office, there is a tubular discharge lamp, which is operated by 3ΐι'3 · ^; π hpr "iu: - 'jeHenh:; r 11' can orden ·

. In embodiment gemriG 2 is clip of the terminal - ■ divided by a Ritteiuand 6 in Z ei 3tr ^"(r 'Ung.3kanäle 7 and 8" Dii3 flitteluanti extends perpendicular to the axis represents Strahlumjc tube 5 partly inside:'. ' ^A ^ ^r · An ~ -: hlu ^! V-tutzrn · 3 and teilucir-e across the pipe 1 Mn- ^{! I} jrc ^: i. In ii ^j " ^r . I ⁿ " pipe 1 lying area is in the hittc- .Kiano ß, -> formed in Durclile ^r 9, through which itr-Vilungsrohre 5 extends through. Through the . Ausführungsbeiepiel of an inner fi inset at the Außenunfang the Strahlungsrübrc Innrjnschi.'amir 12 a of the pipe 1 dan üurohnesser aufueisenden AuHpnschuani- in a housing 13 and, '[t beofcnht Da.- housing 13 is ausgebilcJet such as ^(.; it interacts with the stop 1Π. The housing 11 is radially spaced from the radiation ring 5 and the pipe 1 arranged so that the radiation tube Γι or the tube 1 cannot be scratched by the housing 13 made of a rigid material. The cleaning carriage 11 is centered by the inner chamber 12.

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409883/1155

Through the flow channel 7 in the connection piece 3 is a second flow passage 15 is formed, which is formed directly in the tube 1 in front of the cleaning slide by the width of the.3 11 and the stop 10 defined receiving space for the cleaning carriage opens. A check valve in the form of a ball 16 is seated in the flow channel 7 and a valve seat 17 at the tubular end of the flow channel 7. The Uerschiebeweg for the ball 16 is through on Connection piece 3 or 6 formed on the central turn, projections 18 protruding into the flow channel 7 are limited.

In the position shown in Fig. 2, the connection piece is 3 switched as an outlet port. The cleaning carriage 11 rests with its housing 13 on the stop 10 Perimeter of the passage 9 in the Hitteluand 6, so that he the passage 9 with the housing 13 is completely closed. In this position the cleaning slide is through the Back pressure of the liquid flowing in according to the arrows 19 is maintained. The liquid emerges according to the arrows 20 the pipe 1 into the flow channel 7 and from there out of the connecting piece 3 out. The flow channel 8 is here in the shadow of the outlet flow, so that on the outside of the cleaning carriage 11 only the static Liquid pressure, which is smaller than the dynamic pressure, acts »Under the effect of the escaping liquid

409883/1155 - 13 -

flow, the ball 16 is held on the projections 13.

The direction of flow for the liquid has now been switched and thus the connecting piece 3 now becomes the inlet nozzle, the ball 16 becomes under the effect of the inflowing liquid is pressed against the valve seat 17, so that the upstream flow through IaG 15 v / opened up uird ,. The incoming liquid can then only through the open flow channel 8 according to the dashed arrow 21 step through them according to the dashed lines Pfeilon 22 passes through the passage 9 and the cleaning carriage 11 to the opposite end of the Tube moves into the receiving space located there, so that the radiation tube 5 through the inner foam and the tube 1 wiped through the outer foam 14.

The device is in the area of the other connection piece 4 also designed, uie shown in Fig. 2 for the connection piece. Instead of a ball valve, another conventional one can be used Check valve is used. The projections can be replaced by a corresponding ball cage « The device designed according to FIG. 2 forms the preferred solution of the invention.

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2332415

Let the simplified embodiment according to FIG. 3 be omitted the non-return valve in the connection piece completely. This is where the stop 23 or the dashed line is located Marked stop 2.1a defines the receiving space for the cleaning carriage 11 on the longitudinal sections of the pipe facing side of the connection piece 3 bzu. in the Height of the half of the connection piece facing the longitudinal center of the pipe 3, uia it is indicated by the cleaning carriage 11a shown in dashed lines. The cleaning carriage 11 consists of one on the radiation tube adjacent inner foam 12 encompassing housing 24 with an outer diameter which is smaller than the inner diameter of the pipe 1 is. On the housing 24 a plurality of blades 25 are distributed around its circumference, which are extend obliquely to a plane containing the axis of the radiation tube 5 and thus obliquely to the direction of flow of the Liquid are employed. This can be seen from Fig. 4, such as the plan view of the cleaning carriage according to Fig. 3 represents. The attacks 23 bzu. 23a are in the embodiment according to FIG. 3 on the radiation tubes attached.

In the position shown, the liquid flows from left to right, so that the cleaning carriage 11 bzu, 11a at stop 23 bzu. 23a is held under the action of the dynamic pressure of the liquid. The liquid escapes

409883/1155 - 15 -

through the channels formed by the blades 25 on the circumference of the cleaning carriage 11 and into the connecting piece 3, which is connected as an outlet nozzle
The direction of flow is switched and the connecting piece 3 is now switched as an inlet nozzle,
the entering liquid runs against the face of the cleaning carriage 11 or 11a facing it, so that this runs to the left to the opposite end of the device
towards cleaning the radiation tube 3 v / uird. During the shift, part of the liquid flows
at the same time through the channels formed between the blades 25 on the outer circumference of the Reinigungsschiittons 11, so that
this is twisted under the action of the liquid passing through. This improves the cleaning effect of the cleaning carriage 11.

In FIG. 5, a two-way valve 26 for switching the direction of flow in the pipe 1 is shown schematically. The flow switch 26 has a rotatable core 27 in a housing. On the circumference of the housing, four connections are arranged offset from one another by 90. In the core 27 of the
Valve are two curved channels 28 and 29 designed,
through which two adjacent connections can be connected to one another. The liquid is fed to the multiway valve according to the arrow 30 and exits
the valve via the channel 28 from the adjacent connection

409883/1155

- 16 -

according to arrow 31 and into the connecting piece 4 of the pipe 1. Accordingly, the drawn in the tube arrow the liquid then flows to the connection piece 3, won this through the terminal 31 gegenüberlip? N _Bn rj _e n terminal 32 fiehrweneventil 26 and from this through the curved passage 29 from the gegenüberliegen- the FlüssigkeitseinlaO 30 in the

the liquid outlet 33, the core 27 is rotated by 90, then the connections 31 and 32 are inoperative v / exchanged, so that the liquid is now through the connecting piece 3 enters the pipe and exits the connecting piece 4 from the pipe.

The multi-way valve 26 shown in Fig. 5 is only nine possible training of the valve again. Of course, other suitable valves can also be used.

- patent claims -

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409883/1155

Claims (7)

Patent claims: Device for irradiating a flowing liquid, in particular for irradiating flowing water with ultraviolet rays to disinfect the water, with one adding the liquid as a liquid inlet and fluid outlet serving connecting piece leading to the longitudinal direction of the pipe Tube in this at least to the connection piece extending radiation tube, on which along this a back and forth displaceable on the outer circumference of the radiation tube with a cleaning surface slidingly adjacent Cleaning carriage is arranged, and with at least one open to the pipe longitudinal center up- Acceptance space for the cleaning carriage in its rest position, in which both connecting pieces are in flow connection with the pipe are, characterized in that in the area of both connecting pieces (3, 4) each have a receiving port is formed that either one or the other connecting piece (3, 4) as a liquid inlet with the liquid can be acted upon, so that the direction of flow of the liquid in the tube (1) is reversible is, and that depending on the direction of flow of the liquid in one or the other receiving area through the Back pressure of the liquid held cleaning carriage 409883/1155 - 18 - (11) after changing the direction of flow the liquid can be taken to the opposite receiving space. 2. Apparatus according to claim 1, characterized in that on the outside facing away from the pipe lengths at least one of the receiving spaces has a passage (g) connected to the associated connecting piece (3, 4) is present, so that a substantial part of the respectively outer end face of the cleaning carriage (11) in its rest position in this receiving space of the liquid is exposed. 3. Apparatus according to claim 1 or 2, characterized in that in the cleaning carriage (11) or between this and at least one passage opening for the liquid is formed in the tube surrounding it. 4. Apparatus according to claim 3, characterized in that at least one of the recording rooms by one with the Cleaning slide (11, 11a) interacting stop (1O, 23, 23a) on the pipe longitudinal center facing Side of the associated connecting piece (o, 4) farthest from this or in front of the v / at the center of the pipe distant limitation of the side connected to the pipe - 19 409883/1155 Connection piece (3, 4) is formed. 5. Device according to one of claims 2 to 4, characterized in that daG for the connection piece assigned to the receiving space with the passage (9) on its outside (3) a second flow passage (15) is formed, which outside of this receiving space on the side facing the pipe longitudinal center opens directly into the tube (1). 6. Apparatus according to claim 5, characterized in that in the second flow passage (15) to the associated Connection piece (3) opening check valve (16, 17) is arranged. 7. Device according to one of claims 1 to 6, characterized in that daG means (blades 25) for automatically rotating the cleaning carriage (11) during this Shift on the radiation stirrer (5) are provided. 3. Apparatus according to claim 7, characterized in that on The circumference of the cleaning carriage (11) is formed by blades (25) which are set at an angle to the pipe axis. - 20 - 409883/1155 9, device according to claim 2 or 5, characterized in that both receiving spaces on their outside with the Passage (9), and optionally with the second flow passage (15) are provided, 10, device according to one of claims 1 to 9, characterized in that that the connecting pieces (3, 4) are each connected to a connection (31, 32) of a two-way valve (26) are, which also each have a liquid inlet (30) and a liquid outlet (33), which can be alternately connected to the connections (31, 32), 11, .Device according to one of claims 1 to 10, characterized in that that a timer is provided to switch the direction of flow. 409883 / 115B -34 ' Blank page