SI9200122A

SI9200122A - An apparatus for inside sanding, particulary the tubes

Info

Publication number: SI9200122A
Application number: SI9200122A
Authority: SI
Inventors: Ivan Markocic; Aleksander Gerbec
Original assignee: Ivan Markocic; Aleksander Gerbec
Priority date: 1992-06-19
Filing date: 1992-06-19
Publication date: 1993-12-31

Abstract

Izum se nanaša na napravo za notranje peskanje, zlasti cevi, ki je značilna po tem, da je prvemu vzdolžnemu vstopnemu koncu difuzorja (1) prigrajen cevni nastavek (2), drugemu vzdolžnemu vstopnemu koncu difuzorja (1) pa je prigrajena transportna cev (3). Prosti konec cevi (3) je zaprt s košarastim zbiralnikom (4), katerega plaščna stena divergira v smeri proti difuzorju (1). V območju povezave z dnom zbiralnika (4) je cev (3) zasnovana z nizom radialnih izrezov (5), pri čemer sta notranjost nastavka (2) in cevi (3) medsebojno povezani z vezno-podpihovalno cevjo (6). Slednja je v cev (3) razporejena v bistvu štrleče skozi dno zburalnika (4). Na zunanji steni nastavka (2) in v območju njegovega prostega konca je diametralno nasproti ležeče si razporejen par reber (10), na katerih je vsakokrat razporejen vodilni kolesni sklop (10’).The invention relates to a device for internal sandblasting, especially the tube, characterized in that it is the former fitted to the longitudinal inlet end of the diffuser (1) pipe nozzle (2), the second longitudinal inlet and a conduit is attached to the end of the diffuser (1) (3). The free end of the tube (3) is closed by a basket a collector (4) whose sheath wall diverges into towards the diffuser (1). In the bottom link area of the collector (4) the tube (3) is designed with a series of radials notches (5), the interior of the extension (2) and tubes (3) interconnected with the connection-blower tube (6). The latter is arranged essentially in the tube (3) protruding through the bottom of the reservoir (4). On the outer wall nozzle (2) and in the area of its free end is a pair of ribs diametrically opposite to the lying (10), each having a guide wheel assembly (10 ').

Description

Ivan MARKOČIČ Aleksander GERBECIvan MARKOČIČ Alexander GERBEC

Naprava za notranje peskanje, zlasti ceviInternal sandblasting apparatus, in particular pipes

Predloženi izum spada na področje delovnih postopkov, konkretneje brušenja in/ali poliranja. Podrobneje se predmet izuma lahko uvrsti na področje obdelave s curkom za brušenje ali podobnim curkom, z materiali v obliki delcev. Povsem konkretno pa spada izum na področje strojev in naprav za obdelavo s curkom za brušenje za obdelavo notranjih površin. V mednarodni razvrstitvi patentov je predmet izuma uvrščen v razred B 24 C 3/16.The present invention falls within the field of working methods, more specifically grinding and / or polishing. The subject matter of the invention may be further classified within the field of treatment with a grinding jet or similar jet, with particulate materials. More specifically, the invention relates to the field of jet grinding machines and devices for surface treatment. In the international patent classification, the subject matter of the invention is classified in class B 24 C 3/16.

Naprava za notranje peskanje cevi uvodoma omenjene vrste je že znana iz US 3,824,738. Pri tej napravi se peskalni material in material, ki se ga je očistilo s cevi, med čistilno operacijo odvaja od odprtega konca cevi z zračnim tokom, ki ga proizvaja vrteče se kolo. Naprava obsega voziček, ki je premakljiv v in iz cevi, peskalno kolo, ki je vrtljivo nameščeno na cevastem ohišju, razporejenem na prednjem delu vozička, polžasti transporter za oskrbovanje peskalnega kolesa z abrazivnim peskalnim sredstvom, in zastiralo za zmanjšanje efektivnega prečnega prereza cevi, razporejeno za peskalnim kolesom. Vrteče se peskalno kolo je vstavljeno v odprti konec cevi in, medtem ko se giblje skozi cev, ustvarja zračni tok, ki premika peskalni material in material, ki se ga je očistilo s cevi, ven iz nasprotnega odprtega konca cevi. Peskalni material se zatem loči od materiala, ki se ga je očistilo s cevi, za ponovno uporabo na naslednjih ceveh.The device for internal pipe blasting of the above mentioned type is already known from US 3,824,738. With this device, sandblasting material and pipe-cleaned material are separated from the open end of the pipe by the airflow produced by the rotating wheel during the cleaning operation. The apparatus comprises a trolley which is movable in and out of the pipe, a blasting wheel mounted on a tubular housing arranged at the front of the cart, a worm conveyor for supplying a blasting wheel with an abrasive blasting agent, and a shutter to reduce the effective cross-section of the pipe arranged behind the blasting wheel. The rotating blasting wheel is inserted into the open end of the pipe and, as it moves through the pipe, generates an air stream that moves the blasting material and material that has been cleaned from the pipe out of the opposite open end of the pipe. The sandblasting material is then separated from the material that has been cleaned from the pipes for reuse on the following pipes.

Pomanjkljivost navedene znane naprave je v tem, da pri peskanju cevi, katerih dolžina leži običajno v mejah med 6 in 12 m, zavzema sorazmerno veliko tlorisnoA disadvantage of this known device is that it takes up relatively large floor plans for sandblasting pipes, the length of which generally lies between 6 and 12 m.

21924PP0.IV površino. Namreč, dolžina naprave je enaka vsaj dvakratni dolžini cevi, tj. dolžini cevi plus dolžini trna, na katerem je pritrjen voziček, kar pogojuje sorazmerno velike prostore za namestitev tovrstnih naprav.21924PP0.IV surface. Namely, the length of the device is at least twice the length of the pipe, ie. the length of the pipe plus the length of the mandrel on which the trolley is attached, which causes relatively large spaces for the installation of such devices.

Nadaljnja pomanjkljivost znane naprave leži v tem, da je dolžina transportne poti, po kateri se peskalno sredstvo vrača od izstopa iz cevi do zbiralnega bunkerja, sorazmerno velika in obsega tudi tri do štiri kratno dolžino cevi, ki se jo peska. Posledica tega je, da so posamezni sestavni deli te transportne poti izpostavljeni močni obrabi s peskalnim sredstvom, s čimer se bistveno skrajša njih življenska doba.A further disadvantage of the known device is that the length of the conveyance along which the blasting agent returns from the outlet of the pipe to the collecting hopper is relatively large and also extends three to four times the length of the pipe to be sandblasted. As a result, individual components of this transport route are exposed to severe abrasion by sandblasting, thereby significantly shortening their life span.

Na osnovi zgoraj opisanih pomanjkljivosti je predmet izuma zasnovan na problemu, kako znano napravo za peskanje nadalje modificirati, da se zmanjša dolžino transportne poti za peskalno sredstvo in s tem bistveno zmanjša število obrabi izpostavljenih delov, in da se ob nespremenjeni dolžini obdelovanih cevi zmanjša tlorisno površino naprave.Based on the drawbacks described above, the object of the invention is based on the problem of how to modify a known blasting device in order to reduce the length of the conveyor for the blasting agent and thereby significantly reduce the number of wear exposed parts, and to reduce the floor surface with unchanged length of treated pipes devices.

Zastavljeni problem je po izumu rešen tako, da naprava za notranje peskanje, zlasti cevi, obsega injektorski peskalni difuzor, kateremu je na prvem vzdolžnem vstopnem koncu prigrajen cevni nastavek, njegovemu drugemu vzdolžnemu vstopnemu koncu pa je prigrajena transportna cev. Prosti konec slednje je zaprt s košarastim zbiralnikom, katerega plaščna stena divergira v smeri proti difuzorju, transportna cev pa je v območju povezave z dnom zbiralnika zasnovana z nizom radialnih izrezov. Notranjost cevnega nastavka in transportne cevi sta medsebojno povezani z vezno-podpihovalno cevjo, ki v transportno cev v bistvu štrli skozi dno zbiralnika. Na zunanji steni cevnega nastavka in v območju njegovega prostega konca je diametralno nasproti ležeče si razporejen par reber, na katerih je vsakokrat razporejen vodilni kolesni sklop. Le-ta obsega v radialni smeri cevi, ki jo je potrebno peskati, zasukljivo uležajen in vzmetno podprt vzvod, na katerega prostem koncu je vrtljivo uležajeno oporno kolo. Vsakokraten vzvod je radialno voden s paličastim vodilom, zasukljivo uležajenim na vsakokratnem rebru, in na katerega je nataknjena tlačna vzmet, ki je razporejena med vsakokratnim vzvodom in rebrom.The problem according to the invention is solved by the fact that the device for internal blasting, in particular the pipes, comprises an injector blast diffuser, to which a pipe nozzle is attached at the first longitudinal inlet end and a transport pipe is attached to its second longitudinal inlet end. The free end of the latter is enclosed by a basket collector whose sheath wall diverges towards the diffuser and the conveyor tube is formed by a series of radial cutouts in the area of connection with the bottom of the collector. The inside of the hose fitting and the transport hose are interconnected by a connection-blowing hose that essentially protrudes into the transport hose through the bottom of the reservoir. A pair of ribs are arranged diametrically opposite to the outer wall of the tube adapter and in the area of its free end, each having a guide wheel assembly. It comprises, in the radial direction of the pipe to be sandblasted, a pivotally mounted and spring-supported lever with a pivotally mounted support wheel at its free end. Each lever is radially guided by a rod guide rotatably mounted on each rib, and to which is attached a pressure spring arranged between each lever and the rib.

Nadaljnji izvedbeni primer naprave po izumu obsega turbinsko peskalno napravo, sestoječo se iz statorja in npr. pnevmatsko ali električno gnanega rotorja, ki mu je v osni smeri prigrajena rotacijsko toga transportna cev. Slednja je v območjuA further embodiment of the device according to the invention comprises a turbine blasting device consisting of a stator and e.g. a pneumatically or electrically driven rotor to which a rotary rigid conduit is attached in the axial direction. The latter is in the area

21924PP0.IV svojega prostega konca zasnovana z nizom radialnih izrezov. S svojim prvim koncem je transportna cev pritrjena na sesalno stran turbinske naprave, drugi, tj. prosti konec transportne cevi pa je pritrjen na dno košarastega zbiralnika. Koaksialno s transportno cevjo je z ohlapnim ujemom razporejena z rotorjem togo povezana vrtljiva rahljalna cev, ki je na svojem prostem koncu, v območju izrezov na transportni cevi, na čelni strani zasnovana z nizom enakomerno razmaknjenih rahljalnih zob. Zbiralnik je pri tem na tisti strani svojega dna, ki je obrnjena proč od izrezov na transportni cevi, stator pa na tisti svoji strani, ki je obrnjena proč od sesalne strani turbinske peskalne naprave, vsakokrat zasnovan s štrlino, obsegajočo po par radialno štrlečih reber, katero vsakokrat nosi kolesni sklop.21924PP0.IV its free end is designed with a series of radial cutouts. With its first end, the conduit is attached to the suction side of the turbine device, the second, ie. and the free end of the transport pipe is attached to the bottom of the basket. Coaxial to the conveyor tube is a loosely matched rotor with a rigidly connected rotating looseness tube which is formed at its free end, in the region of the cutouts on the conveyor tube, at the front with a series of evenly spaced loosening teeth. The reservoir is at each side of its bottom facing away from the cutouts on the conveyor tube, and the stator on its side facing away from the suction side of the turbine blasting device is each designed with a projection consisting of a pair of radially projecting ribs, which the wheel assembly always carries.

Še nadaljnji izvedbeni primer naprave po izumu je značilen po tem, da je rotorju v osni smeri prigrajena rotacijsko toga cev, ki na svojem nasprotnem koncu predira dno zbiralnika in je z njim v togi zvezi. Koaksialno z omenjeno cevjo je razporejena vrtljiva ekvatorska cev, ki je po svoji notranji steni zasnovana z notranjim polžem. Ekvatorska cev je v togi povezavi z rotorjem in se v vzdolžni smeri razteza v bistvu do območja dna zbiralnika, pri čemer je med slednjim in prostim koncev cevi vsakokrat zagotovljen razmik. Zbiralnik je na tisti strani svojega dna, ki je obrnjena proč od prostega konca ekvatorske cevi, stator pa na tisti svoji strani, ki je obrnjena proč od sesalne strani turbinske sesalne naprave, vsakokrat zasnovan s po parom radialno štrlečih reber, katero vsakokrat nosi kolesni sklop.A further embodiment of the device according to the invention is characterized in that a rotary rigid tube is mounted in the axial direction, which at its opposite end penetrates the bottom of the reservoir and is rigidly connected therewith. Coaxially with said tube is a rotating equatorial tube arranged along its inner wall with an internal snail. The equatorial tube is rigidly connected to the rotor and extends substantially in the longitudinal direction to the area of the bottom of the reservoir, with a separation between the latter and the free ends of the tube. The reservoir is on each side of its bottom facing away from the free end of the equatorial tube, and the stator on its side facing away from the suction side of the turbine suction device, each designed with a pair of radially projecting ribs, each carried by a wheel assembly. .

Vsi izvedbeni primeri naprave za peskanje po izumu so značilčni po tem, da je tisti del plaščne stene košarastega zbiralnika, ki v osni smeri leži bližje peskalni napravi, zasnovan v bistvu kot radialno upogljiva fina mreža, kateri je nadalje v osni smeri prigrajen iz elastičnega materiala zasnovan in radialno upogljiv lijakast ščitnik.All embodiments of the blasting device of the invention are characterized in that the part of the mantle wall of the basket that lies in the axial direction is closer to the blasting device, designed essentially as a radially flexible fine mesh, which is further mounted in the axial direction by an elastic material designed and radially bendable funnel shield.

Izum v nadaljnjem konkretiziramo na osnovi izvedbenih primerov, prikazanih v priloženem načrtu, v katerem kaže sl. 1 napravo za notranje peskanje, zlasti cevi, po izumu, v vzdolžnem prerezu, sl. 2 drugi izvedbeni primer naprave s sl. 1 v vzdolžnem prerezu, in sl. 3 nadaljnji izvedbeni primer naprave s sl. 1, prav tako v vzdolžnem prerezu.The invention is further concretized on the basis of the embodiments shown in the accompanying plan, in which FIG. 1 shows a device for internal blasting, in particular pipes, according to the invention, in longitudinal section; 2 shows another embodiment of the apparatus of FIG. 1 in longitudinal section, and FIG. 3 is a further embodiment of the apparatus of FIG. 1, also in longitudinal section.

21924PP0.IV21924PP0.IV

Naprava za notranje peskanje cevi sestoji iz injektorskega peskalnega difuzorja 1, kateremu je na prvi vzdolžni vstopni konec, v danem primeru zgornji, prigrajen cevni nastavek 2. Prosti konec le-tega je namenjen sprejemu po sebi znane a na načrtu neprikazane gibke dovodne cevi stisnjenega pogonskega zraka. Drugemu vzdolžnemu vstopnemu koncu injektorskega difuzorja 1, v danem primeru spodnjemu, je prigrajena transportna cev 3, katere prosti konec je tako zaprt s košarastim zbiralnikom 4 za peskalno sredstvo, da je cev 3 centrično razporejena na dnu zbiralnika 4, plaščna stena le-tega pa divergira v smeri proti difuzorju 1. Cev 3 je v območju povezave z dnom zbiralnika 4 zasnovana z nizom radialnih izrezov 5, ki so namenjeni vstopu peskalnega sredstva. Notranjost cevnega nastavka 2 in transportne cevi 3 sta povezani z vezno-podpihovalno cevjo 6, pri čemer je slednja na cevni nastavek 2 priključena v območju zgornjega konca injektorskega difuzorja 1, v transportno cev 3 pa štrli v bistvu skozi dno zbiralnika 4.The device for internal pipe blasting consists of an injector blast diffuser 1, to which there is at the first longitudinal inlet end, optionally the upper, attached pipe nozzle 2. The free end thereof is intended for receiving a known but not shown flexible feed tube of a compressed drive air. The second longitudinal inlet end of the injector diffuser 1, optionally the lower one, is fitted with a conduit 3, the free end of which is closed by a basket sandblasting container 4 such that the tube 3 is centrally disposed at the bottom of the reservoir 4 and the mantle wall thereof. diverges in the direction of the diffuser 1. The tube 3 is designed in the area of connection with the bottom of the reservoir 4 with a series of radial cutouts 5 intended for the inlet of the blasting agent. The interior of the tube nozzle 2 and the conduit 3 are connected to the conduit 6, the latter being connected to the conduit 2 in the area of the upper end of the injector diffuser 1 and projecting substantially through the bottom of the reservoir 4.

Tisti del plaščne stene košarastega zbiralnika 4, ki leži bližje injektorskemu difuzorju 1, je, gledano v osni smeri, zasnovan v bistvu kot radialno upogljiva fina mreža 7, ki je prepustna le za prašnate delce, nastale pri peskanju. Omenjeni mreži 7 je nadalje v osni smeri prigrajen iz elastičnega materiala zasnovan in prav tako radialno upogljiv lijakast ščitnik 8, ki pri delovanju naprave po izumu tesno nalega na notranjo steno cevi 9, ki se jo peska.That part of the mantle wall of the basket 4, which is closer to the injector diffuser 1, is designed, in the axial direction, essentially as a radially bent fine mesh 7, which is permeable only to dust particles generated by blasting. Said mesh 7 is further mounted in an axial direction by an elastic material designed and also radially bent funnel shield 8 which, when operating the device according to the invention, rests tightly on the inner wall of the sandblasted pipe 9.

Na zunanji steni cevnega nastavka 2 in v območju njegovega prostega konca je diametralno nasproti ležeče si razporejen par reber 10, na katerih je vsakokrat razporejen vodilni kolesni sklop 10’. Le-ta obsega na po sebi znan način, v radialni smeri cevi 9 zasukljivo uležajen in vzmetno podprt vzvod 11, na katerega prostem koncu je vrtljivo uležajeno oporno kolo 12. Vsakokraten vzvod 11 je radialno voden s paličastim vodilom 13, zasukljivo uležajenim na vsakokratnem rebru 10, in na katerega je nataknjena tlačna vzmet 14, razporejena med vsakokratnim vzvodom 11 in rebrom 10. Nadalje je na tisti strani dna zbiralnika 4, ki je obrnjena proč od radialnih izrezov 5 transportne cevi 3, razporejena pritrdilna štrlina 15, obsegajoča par diametralno nasproti si ležečih reber 16, na katerih je vsakokrat razporejen že opisani kolesni sklop 10’.A pair of ribs 10 are arranged diametrically opposite to the outer wall of the tube 2 and in the area of its free end, each having a guide wheel assembly 10 '. It comprises in a known manner, in the radial direction of the pipe 9, a pivotally supported and spring-supported lever 11, at which the pivot bearing wheel 12 is rotatably mounted at the free end. Each lever 11 is radially guided by a rod guide 13 rotatably mounted on each rib. 10, and to which a pressure spring 14 is disposed, arranged between the respective lever 11 and the rib 10. Further, on the side of the bottom of the reservoir 4 facing away from the radial recesses 5 of the conveyor tube 3, a mounting projection 15 is arranged, having a pair diametrically opposite and the recessed ribs 16, each having the wheel assembly 10 'already described.

Notranjo steno cevi 9 se peska v bodisi v vodoravnem ali navpičnem položaju, in sicer tako, da se v slednjo potisne predmetno napravo po izumu, pri čemer je le-taThe inner wall of the pipe 9 is sandblasted in either a horizontal or vertical position by pushing the object device according to the invention into the latter, the latter being

21924PP0.IV s pari kolesnih sklopov 10’ in radialno upogljivim ščitnikom 8 tesno naslonjena na steno cevi 9. Po pobliže neprikazani dovodni cevi se v cevni nastavek 2 dovaja tok stisnjenega zraka (puščica A), ki deloma steče preko vezne-podpihovalne cevi 6 skozi dno zbiralnika 4 (puščica B). Ta, ti. primarni tok stisnjenega zraka pri tem posesa peskalno sredstvo skozi radialne izreze 5 transportne cevi 3 in ga potisne po slednji navzgor. Temu pripomore tudi sekundarni tok stisnjenega zraka, tj. tok stisnjenega zraka, ki ostane v cevnem nastavku 2 po oclvodu primarnega toka stisnjenega zraka skozi vezno-podpihovalno cev 6. Sekundarni tok stisnjenega zraka teče pri tem skozi difuzor 2 (puščica C), pri čemer ustvarja nadtlak v zbiralniku 4, ki, kot že omenjeno, dodatno potiska peskalno sredstvo skozi izreze 5 (puščica D). Sekundami tok stisnjenega zraka, ki teče skozi difuzor 2, povzroča tudi podtlak v transportni cevi 3, kar dodatno pospeši tok peskalnega sredstva, ki ga ta hitri tok stisnjenega zraka vrže radialno na notranjo steno cevi 9 (puščica E). Peskalno sredstvo pade zatem v zbiralnik 4, prašnate delce pa tok stisnjenega zraka potisne skozi fino mrežo 7. Peskalno napravo po izumu se potiska vzdolž cevi 9, dokler ni vsa notranjost opeskana.21924PP0.IV With pairs of wheel assemblies 10 'and a radially bent shield 8, resting tightly on the wall of the pipe 9. After a closer inlet of the supply pipe, a stream of compressed air (arrow A) is fed into the pipe connection 2, partly flowing through the connecting-blowing pipe 6 through bottom of collector 4 (arrow B). This one, you. the primary compressed air stream thus sucks the blasting agent through the radial recesses 5 of the conveyor tube 3 and pushes it upwards. This is also aided by the secondary flow of compressed air, ie. the compressed air flow remaining in the conduit 2 after the primary compressed air flow through the conduit 6. The secondary compressed air flows through the diffuser 2 (arrow C), creating overpressure in the reservoir 4, which, as already mentioned, further pushes the blasting agent through the recesses 5 (arrow D). Seconds, the flow of compressed air flowing through the diffuser 2 also causes a pressure in the conveyor tube 3, further accelerating the flow of the blasting agent, which is thrown radially to the inner wall of the tube 9 (arrow E). The blasting agent is then dropped into the reservoir 4 and the dust particles are displaced by a stream of compressed air through a fine mesh 7. The blasting device of the invention is pushed along the pipe 9 until the entire interior is sanded.

Drugi izvedbeni primer naprave po izumu obsega po sebi znano turbinsko peskalno napravo 16, sestoječo se iz statorja 17 in pnevmatsko gnanega rotorja 18 (na sl. 2 detajlno neprikazano). Rotorju 18 je, gledano v osni smeri, prigrajena rotacijsko toga transportna cev 3, ki je enako kot v prvem izvedbenem primeru v območju svojega prostega konca zasnovana z nizom radialnih izrezov 5, in ki je s svojim prvim koncem pritrjena na sesalno stran turbinske naprave 16. Drugi, tj. prosti konec cevi 3 je pritrjen na dno košarastega zbiralnika 4, ki mu je enako kot v prvem izvedbenem primeru prigrajena v bistvu radialno upogljiva fina mreža 7, ki je prepustna le za prašnate delce, nastale pri peskanju. Omenjeni mreži 7 je nadalje v osni smeri prigrajen iz elastičnega materiala zasnovan in prav tako radialno upogljiv lijakast ščitnik 8, ki pri delovanju naprave po izumu tesno nalega na notranjo steno cevi 9, ki sejo peska.Another embodiment of the device according to the invention comprises a known turbine blasting device 16 consisting of a stator 17 and a pneumatically driven rotor 18 (not shown in detail in Fig. 2). Rotary 18, in the axial direction, is fitted with a rotary rigid conduit 3, which, in the same embodiment as in the first embodiment, is formed by a series of radial cutouts 5 at its free end, and which is attached to the suction side of the turbine device 16 by its first end. The second, ie. the free end of the tube 3 is attached to the bottom of the basket 4, to which, essentially as in the first embodiment, a substantially radially bent fine mesh 7 is permeable, which is permeable only to dust particles formed by blasting. Said mesh 7 is further mounted in an axial direction by an elastic material designed and also radially bent funnel shield 8, which, when operating the device according to the invention, rests tightly on the inner wall of the sand-forming pipes 9.

Koaksialno s transportno cevjo 3 je z ohlapnim ujemom razporejena tudi vrtljiva rahljalna cev 19, ki je v togi povezavi z rotorjem 18. Na svojem prostem koncu, tj. v območju izrezov 5 na cevi 3, je cev 19 na čelni strani zasnovana z nizom enakomerno razmaknjenih rahljalnih zob 20. Zbiralnik 4 je na tisti strani svojega dna, ki je obrnjena proč od izrezov 5 na cevi 3, stator 17 pa na tisti svoji strani, ki je obrnjena proč od sesalne strani naprave 16, vsakokrat zasnovan s štrlino 20, 21,Coaxially with conveyor tube 3, a rotary loosening tube 19 is arranged with a loose fit, which is rigidly connected to the rotor 18. At its free end, i.e. in the area of the recesses 5 on the tube 3, the tube 19 on the front is formed by a series of evenly spaced loosening teeth 20. The collector 4 is on the side of its bottom facing away from the recesses 5 on the tube 3 and the stator 17 is on its side , facing away from the suction side of device 16, each designed with projection 20, 21,

21924PP0.IV obsegajočo po par radialno štrlečih reber 22, katero vsakokrat nosi že opisan kolesni sklop 10’.21924PP0.IV comprising a pair of radially projecting ribs 22, each bearing the wheel assembly 10 'already described.

Tudi pri tem drugem izvedbenem primeru se notranjo steno cevi 9 peska v bistvu v navpičnem položaju. Peskalno napravo po izumu se namesti v cev 9, tako da s pari kolesnih sklopov 10’ in radialno upogljivim ščitnikom 8 tesno nalega na notranjo steno cevi 9. Hkrati z rotorjem 18 turbinske naprave 16 se prične vrteti tudi rahljalna cev 19, ki z nizom rahljalnih zob 20 vrtinči in rahlja v zbiralniku 4 nahajajoče se peskalno sredstvo. Vrtenje rotorja 18 povzroči pri tem padec tlaka v transportni cevi 3, zaradi česar je peskalno sredstvo posesano vanjo (puščica F) in dalje v rotor 18 ter nato z lopaticami le-tega vrženo radialno navzven v steno cevi 9 (puščica G). Peskalno sredstvo pade zatem v zbiralnik 4, prašnate delce pa zračni tok potisne skozi fino mrežo 7. Peskalno napravo po izumu se potiska vzdolž cevi 9, dokler ni vsa notranjost opeskana.Even in this second embodiment, the inner wall of the sand pipe 9 is substantially in a vertical position. The blasting device according to the invention is mounted in a pipe 9 so that, with the pairs of wheel assemblies 10 'and the radially flexible guard 8, it rests tightly on the inner wall of the pipe 9. At the same time as the rotor 18 of the turbine device 16, the loosening tube 19 starts rotating, with a series of loosening the tooth 20 swirls and loosens the sandblasting agent 4 in the reservoir. Rotation of the rotor 18 causes the pressure in the conveyor tube 3 to fall, causing the blasting agent to be sucked into it (arrow F) and further into the rotor 18 and then thrown radially outward into the wall of the pipe 9 (arrow G) with the blades. The blasting agent is then dropped into the reservoir 4 and the dust particles are blown through the fine mesh 7. The blasting device of the invention is pushed along the pipe 9 until the entire interior is sanded.

Nadaljnji izvedbeni primer naprave za notranje peskanje po izumu sestoji iz po sebi znane turbinske peskalne naprave 16, sestoječe se iz statorja 17 in npr. pnevmatsko ali električno gnanega rotorja 18 (na sl. 3 detajlno neprikazano). Rotoiju 18 je, gledano v osni smeri, prigrajena rotacijsko toga cev 23, ki na svojem nasprotnem koncu predira dno zbiralnika 4 in je z njim v togi zvezi. Zbiralniku 4 je enako kot v obeh poprej opisanih izvedbenih primerih prigrajena v bistvu radialno upogljiva fina mreža 7, kije prepustna le za prašnate delce, nastale pri peskanju. Omenjeni mreži 7 je nadalje v osni smeri prigrajen iz elastičnega materiala zasnovan in prav tako radialno upogljiv lijakast ščitnik 8, ki pri delovanju naprave po izumu tesno nalega na notranjo steno cevi 9, ki se jo peska. Koaksialno s cevjo 23 je razporejena vrtljiva ekvatorska cev 24, kije po svoji notranji steni zasnovana z notranjim polžem 25, in ki je v togi povezavi z rotorjem 18. Ekvatorska cev 24 se v vzdolžni smeri razteza v bistvu do območja dna zbiralnika 4, pri čemer je med slednjim in prostim koncev cevi 24 vsakokrat zagotovljen razmik, ki omogoča prost prehod peskalnega sredstva.A further embodiment of the internal blasting device of the invention consists of a known turbine blasting device 16 consisting of a stator 17 and e.g. pneumatically or electrically driven rotor 18 (not shown in detail in Fig. 3). Rotary 18, in the axial direction, is fitted with a rotary rigid tube 23 which at its opposite end penetrates the bottom of the reservoir 4 and is rigidly connected therewith. As in the two embodiments described above, collector 4 is fitted with a substantially radially flexible fine mesh 7, which is permeable only to dust particles generated by blasting. Said mesh 7 is further mounted in an axial direction by an elastic material designed and also radially bent funnel shield 8 which, when operating the device according to the invention, rests tightly on the inner wall of the sandblasted pipe 9. Coaxially with tube 23 is arranged a rotating equatorial tube 24, which is formed on its inner wall by an internal snail 25, and which is rigidly connected to the rotor 18. The equatorial tube 24 extends substantially longitudinally to the area of the bottom of the reservoir 4, wherein a gap is provided between the latter and the free ends of the pipe 24 to allow the free passage of the blasting agent.

Zbiralnik 4 je na tisti strani svojega dna, ki je obrnjena proč od prostega konca ekvatorske cevi 24, stator 17 pa na tisti svoji strani, ki je obrnjena proč od sesalne strani naprave 16, vsakokrat zasnovan s po parom radialno štrlečih reber 25, 26, katero vsakokrat nosi že opisan kolesni sklop 10’.The reservoir 4 is on each side of its bottom facing away from the free end of the equatorial tube 24, and the stator 17 on each side facing away from the suction side of the device 16 is each designed with a pair of radially projecting ribs 25, 26, each bearing the already described wheel assembly 10 '.

21924PP0.IV21924PP0.IV

Kot pri obeh že opisanih primerih se tudi pri tem izvedbenem primeru notranjo steno cevi 9 peska v bistvu v navpičnem položaju. Peskalno napravo po izumu se namesti v cev 9, tako da s pari kolesnih sklopov 10’ in radialno upogljivim ščitnikom 8 tesno nalega na notranjo steno cevi 9. Hkrati z rotorjem 18 turbinske naprave 16 se prične vrteti tudi elevatorska cev 24 z notranjim polžem 25, ki transportira v zbiralniku 4 nahajajoče se peskalno sredstvo v turbinsko napravo 16 (puščica H). Vrtenje rotorja 18 povzroči, da je peskalno sredstvp z lopaticami le-tega vrženo radialno navzven v steno cevi 9 (puščica J). Peskalno sredstvo pade zatem v zbiralnik 4, prašnate delce pa zračni tok potisne skozi fino mrežo 7. Peskalno napravo po izumu se potiska vzdolž cevi 9, dokler ni vsa notranjost opeskana.As in the two examples already described, the inner wall of the sand pipe 9 is substantially in a vertical position in this embodiment. The blasting device of the invention is mounted in a pipe 9 so that, with the pairs of wheel assemblies 10 'and the radially flexible guard 8, it rests tightly on the inner wall of the pipe 9. At the same time as the rotor 18 of the turbine device 16, an elevator tube 24 with an internal snail 25 is rotated. which transports the sandblasting agent located in the reservoir 4 to the turbine device 16 (arrow H). Rotation of the impeller 18 causes the blasting means with the blades to be thrown radially outward into the wall of the pipe 9 (arrow J). The blasting agent is then dropped into the reservoir 4 and the dust particles are blown through the fine mesh 7. The blasting device of the invention is pushed along the pipe 9 until the entire interior is sanded.

Claims

PATENT APPLICATIONS

1. An internal blasting device, in particular a pipe comprising in the pipe to be cleaned, arranged either a blasting turbine or an injector diffuser, which moves along the pipe, the blasting turbine or diffuser spraying the blasting agent radially to the inner walls of the pipe, marked the first longitudinal inlet end of the injector blast diffuser (1) having a tubular attachment (2) and the second longitudinal inlet end of the diffuser (1) a transport tube (3), the free end of which is closed by a basket container (4) whose diaphragm wall diverges towards the diffuser (1) and the tube (3) is designed in the connection area with the bottom of the reservoir (4) with a series of radial cutouts (5), with the interior of the attachment (2) and the tubes (3) connected by a connecting-blowing pipe (6) projecting substantially through the bottom of the reservoir (4), with a pair of ribs (10) diametrically opposite to the outer wall of the attachment (2) and in the area of its free end kate The guide wheel assembly (10 ') is arranged each time.

2. An internal blasting device, in particular a pipe, characterized in that it comprises a turbine blasting device (16), with a rotary rigid conveying tube (3) fitted in its axis in its axis in the region of its own the free end is designed by a series of radial cutouts (5), and which with its first end is attached to the suction side of the turbine device (16), the second, ie. the free end of the tube (3) is fixed to the bottom of the basket collector (4), with a coaxially rotating loosening tube (19) disposed coaxially with the hose (3) by a rotor (18), which is disposed at its free end , in the region of the recesses (5) on the tube (3), formed on the front by a series of evenly spaced tines (20), the collector (4) on the side of its bottom facing away from the recesses (5) at tubes (3), and the stator (17) on each side facing away from the suction side of the device (16), each designed with a projection (20, 21) comprising a pair of radially projecting ribs (22), which it carries each time wheel assembly (10 ').

3. An internal blasting device, in particular a pipe, characterized in that a rotary rigid pipe (23) is inserted in the axial direction, which at its opposite end penetrates the bottom of the reservoir (4) and is rigidly connected thereto; whereby the coaxial s

21924PP0.IV A rotating elevator tube (24) arranged along its inner wall with an inner snail (25) arranged in a rigid connection with the rotoi (18), extending substantially to the tube (23) areas of the bottom of the collector (4), each providing a space between the latter and the free ends of the tube (24), and the reservoir (4) being on the side of its bottom facing away from the free end of the elevator tube (24), the stator (17), on its side facing away from the suction side of the device (16), is each designed with a pair of radially projecting ribs (25, 26), which is each supported by a wheel assembly (10 ').

Internal blasting device according to claims 1 to 3, characterized in that the part of the mantle wall of the basket collector (4) which lies axially closer to the blasting device (1,16) is designed essentially as a radially flexible fine mesh (7), which is further supported in an axial direction by an elastic material designed and radially bent funnel guard (8).

5. Internal blasting device according to claims 1 to 3, characterized in that the wheel assembly (10 ') comprises a pivotally mounted and spring-supported lever (11) in the radial direction of the pipe (9), on which a support wheel is rotatably mounted on the free end. (12), wherein each lever (11) is radially guided by a rod guide (13) pivotally mounted on each rib (10, 16, 22, 25, 26) and to which a pressure spring (14) is disposed between each lever (11) and the rib (10,16, 22, 25, 26).