CH314063A - Apparatus for projecting solid abrasive particles onto a work to be treated - Google Patents
Apparatus for projecting solid abrasive particles onto a work to be treatedInfo
- Publication number
- CH314063A CH314063A CH314063DA CH314063A CH 314063 A CH314063 A CH 314063A CH 314063D A CH314063D A CH 314063DA CH 314063 A CH314063 A CH 314063A
- Authority
- CH
- Switzerland
- Prior art keywords
- cover
- sub
- treated
- work
- hood
- Prior art date
Links
- 239000002245 particle Substances 0.000 title claims description 25
- 239000007787 solid Substances 0.000 title claims description 4
- 238000011084 recovery Methods 0.000 claims description 8
- 230000005291 magnetic effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 210000000056 organ Anatomy 0.000 claims 1
- 239000003082 abrasive agent Substances 0.000 description 7
- 239000004576 sand Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000656145 Thyrsites atun Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- -1 shot Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
- B24C3/06—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable
- B24C3/065—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable with suction means for the abrasive and the waste material
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Appareil <B>ä</B> projeter <B>des</B> particules abrasives <B>solides</B> sur un ouvrage <B>ä</B> traiter La presente invention a pour objet un ap- pareil ä projeter des particules abrasives soli des sur un ouvrage ä traiter, par exemple pour 1e debarrasser de la rouille, de la boue, de la peinture, ou d'autres depöts. Apparatus <B>ä</B> for projecting <B>solid</B> abrasive particles onto a work <B>ä</B> to treat The subject of the present invention is an apparatus projecting solid abrasive particles onto a work to be treated, for example to rid it of rust, mud, paint, or other deposits.
Cet appareil, muni d'un capot en forme de caisson pour retenir les particules abrasives et les debris eventuels, est caracterise par 1e fait qu'il comprend des moyens capables de faire adherer automatiquement ledit appareil ä 1'ou- vrage dont il s'agit de traiter la surface. This apparatus, provided with a cover in the form of a box to retain the abrasive particles and any debris, is characterized by the fact that it comprises means capable of causing said apparatus to adhere automatically to the work from which it is attached. acts to treat the surface.
0n a dejä propose un appareil comprenant un capot conique ou en forme de caisson, en- tourant 1e jet de particules abrasives et se trou- vant en contact avec la surface ä traiter 1e long des Bords dune ouverture laterale du capot. Dans une forme de realisation de cet appareil, les particules abrasives sont projetees par une tuyere dans un courant d'air comprime alors que la matiere abrasive et les dechets sont eva- cu6s du capot au moyen d'un tuyau dans lequel Pair du capot est aspire en meme temps que les particules abrasives. Afin d'assurer un en- levement efficace des particules flottantes hors du capot et d'empecher qu'elles s'accumulent dans ce dernier, 1e debit d'air passant par 1e tuyau d'echappement ou d'extraction est supe- rieur ä celui de fair qui est introduit dans 1e capot par la tuyere d'ejection. La difference entre ces volumes d'air est compensee au moyen d'orifices disposes autour de Pembou- chure du capot et par des interstices entre 1e Bord de 1'embouchure et la surface de Pouvrage ä traiter, ou bien seulement de cette derniere maniere. Apparatus has already been proposed comprising a conical or box-shaped cover surrounding the jet of abrasive particles and being in contact with the surface to be treated along the edges of a side opening of the cover. In one embodiment of this apparatus, the abrasive particles are ejected through a nozzle in a stream of compressed air while the abrasive material and waste material is evacuated from the hood by means of a pipe in which the air of the hood is vacuums along with the abrasive particles. In order to ensure effective removal of floating particles from the hood and to prevent their accumulation in the hood, the airflow through the exhaust or extraction pipe is greater than that of fair which is introduced into the 1st cover by the ejection nozzle. The difference between these air volumes is compensated by means of orifices arranged around the mouth of the cover and by interstices between the edge of the mouth and the surface of the work to be treated, or else only in the latter way.
Cette construction connue convient parfai- tement lorsque la surface ä traiter est rigou- reusement ou sensiblement horizontale et que Pappareil peut reposer sur cette surface par tout son poids, mais si les surfaces ä nettoyer sont verticales ou constituent une partie ä face tournee vers 1e bas de 1'objet ä traiter, 1'appa- reil doit etre soutenu dune maniere quelcon- que pendant tont 1e temps qu'il est- en fonction- nement, sofft parce qu'on 1e maintient avec les mains, sofft parce qu'il est suspendu ou qu'il est supporte directement ou indirectement par 1e sol. This known construction is perfectly suitable when the surface to be treated is strictly or substantially horizontal and the apparatus can rest on this surface by all its weight, but if the surfaces to be cleaned are vertical or constitute a downward-facing part. of the object to be treated, the apparatus must be supported in some way during the whole time that it is in operation, sofft because it is held with the hands, sofft because it is is suspended or supported directly or indirectly by the ground.
Le dessin RTI ID="0001.0274" WI="11" HE="4" LX="1207" LY="1692"> annexe reprAente, ä titre d'exem- ple, plusieurs formes d'execution de Pobjet de 1'invention. Drawing RTI ID="0001.0274" WI="11" HE="4" LX="1207" LY="1692"> appendix represents, by way of example, several embodiments of the object of the invention.
La fig. 1 est une vue en elevation exte- rieure dune premiere forme d'execution. fig. 1 is an exterior elevational view of a first embodiment.
La fig. 2 est une coupe verticale suivant la ligne 2-2 de la fig. 1. fig. 2 is a vertical section along line 2-2 of FIG. 1.
La fig. 3 est une coupe partielle dune autre forme d'execution. fig. 3 is a partial section of another form of execution.
La fig. 4 represente en coupe un dispositif pourvu de ventouses en forme de coupelles exterieures d'aspiration. La fig. 5 est une coupe partielle dune autre forme d'ex6cution utilisable Sur des surfaces courbes. fig. 4 shows in section a device provided with suction cups in the form of external suction cups. fig. 5 is a partial section of another form of execution usable on curved surfaces.
La fig. 6 reprAente en 616vation une va- riante comprenant un chässis de Support de Pappareil. fig. 6 shows in 616 vation a variant comprising a Support frame of the apparatus.
Les fig. 7, 8, 9 et 10 representent diffe rentes formes de capots pouvant equiper 1'ap- pareil. Figs. 7, 8, 9 and 10 represent different forms of covers which can be fitted to the apparatus.
L'appareil represent6 aux fig. 1 et 2 com- prend une tuyere 1 de forme connue reli6e ä 1'extr6mite d'un tuyau rigide 2 auquel aboutit un tuyau flexible (non repr6sent6), relie ä une conduite communiquant avec une source d'air comprim6. Le tuyau 2 est support6 de maniere ä pouvoir effectuer un mouvement angulaire et une translation horizontale dans une suspension ä cardan 4 support6e vers 1e sommet d'un ca- pot 5 en forme de tronc de Pyramide. Un joint 6tanche au gaz est plac6 entre 1e. capot et 1e tuyau 2, ce joint 6tant constitu6 par un man- chon flexible ä ondulations 3 qui permet ä la tuyere d'etre dirig6e vers n'importe quel point de la surface ä traiter, de fagon ä y projeter des particules abrasives charri6es par de Pair sous Pression. The apparatus represented in figs. 1 and 2 comprises a nozzle 1 of known shape connected to the end of a rigid pipe 2 which terminates in a flexible pipe (not shown), connected to a pipe communicating with a source of compressed air. The pipe 2 is supported in such a way as to be able to effect an angular movement and a horizontal translation in a gimbal suspension 4 supported towards the top of a cover 5 in the form of a truncated Pyramid. A gastight seal is placed between the 1e. cover and the pipe 2, this joint being constituted by a flexible sleeve with undulations 3 which allows the nozzle to be directed towards any point of the surface to be treated, so as to project thereon abrasive particles carried by of Peer Pressure.
La grande base ouverte du capot tronco- nique est en contact avec 1'ouvrage ä traiter car elle presente ä cet effet des Organes de scel- lement pour eviter les fuites de sable hors du capot. Les Organes de scellement represent6s comprennent deux Parties : une brosse annu- laire 6 et un anneau 7 en caoutchouc tres sou- ple. La brosse est perm6able ä Pair mais impermeable aux particules abrasives, ä la gre- naille, au sable et aux particules analogues. Elle est construite de telle maniere que 1e capot puisse Ure deplac6 Sur 1e pourtour de 1'ouvrage tout en empechant 1e sable de se r6pandre. Cette brosse annulaire est montee de telle Sorte que Fon puisse la mouvoir vers 1'int6rieur du capot contre Paction de ressorts 8, ce qui per- met ä. Panneau de caoutchouc 7 de venir en contact avec la surface de 1'ouvrage et de for men avec celle-ci un joint 6tanche. Ce montage permet donc que Fon puisse appliquer, sofft seulement la brosse 6, sofft la brosse et la gar- niture elastique 7 sur 1'ouvrage. Le joint de cet Organe 7 avec la surface peut eire complet ou seulement partiel, ä volonte, suivant que Pac- tion de nettoyage exercee par Pair p6netrant dans 1e capot pour recup6rer 1e sable usag6, est assuree par la brosse annulaire 6, ou bien quelle s'effectue au moyen dune ou plusieurs soupapes de d6compression situees Jans 1e RTI ID="0002.0276" WI="7" HE="4" LX="1835" LY="513"> c6t6 du capot. Dans les deux cas, an maintient une diff6rence de Pression suffisante entre 1'inte- rieur et 1'ext6rieur du capot pour que 1'appareil sofft r6ellement en contact avec 1'ouvrage. The large open base of the frustoconical hood is in contact with the work to be treated because it has Sealing Devices for this purpose to prevent sand from leaking out of the hood. The Sealing Devices represented comprise two Parts: an annular brush 6 and a very flexible rubber ring 7. The brush is permeable to air but impervious to abrasive particles, shot, sand and the like. It is constructed in such a way that the cover can be moved around the perimeter of the structure while preventing the sand from spreading. This annular brush is mounted in such a way that Fon can move it towards the interior of the cover against the action of springs 8, which allows ä. Rubber panel 7 to come into contact with the surface of the work and to form a watertight seal therewith. This assembly therefore allows Fon to be able to apply, sofft only the brush 6, sofft the brush and the elastic gasket 7 on the work. The seal of this member 7 with the surface can be complete or only partial, as desired, depending on whether the cleaning action exerted by the air penetrating into the cover to recover the used sand, is ensured by the annular brush 6, or else what is carried out by means of one or more decompression valves located on the 1st RTI ID="0002.0276" WI="7" HE="4" LX="1835" LY="513"> side of the cover. In both cases, a sufficient pressure difference is maintained between the inside and the outside of the cover for the device to be really in contact with the work.
Des roulettes d'appui designees par 1e chif- fre de r6ference 9 sont mont6es Sur 1'appareil et peuvent se mouvoir vers le capot contre 1'ac- tion d'un ressort 10 de Sorte que si la Pression tombe, 1'appareil peut etre deplac6 par roule- ment sur les roulettes d'appui. Lorsque 1'appa- reil est deplace pour changer de Position, la difference de Pression peut ne pas etre suffi- sante pour faire supporter 1'appareil par 1'ou- vrage, mais an maintient en tout cas un courant d'air convenable pour recuperer les particules abrasives. La garniture d'6tanch6it6 entre la brosse et 1'ouvrage peut etre r6alisee sous forme d'un tissu de caoutchouc 11 tendu comme cela est repr6sent6 ou bien sous forme de soufflet. Les soufflets peuvent eire construits pour exer- cer une Pression elastique en remplacement des ressorts B. Support rollers designated by the reference numeral 9 are mounted on the apparatus and can move towards the cover against the action of a spring 10 so that if the pressure drops, the apparatus can be moved by rolling on the support rollers. When the device is moved to change position, the pressure difference may not be sufficient to support the device by the work, but in any case maintains a suitable air current for collect the abrasive particles. The seal between the brush and the work can be made in the form of a stretched rubber fabric 11 as shown or else in the form of a bellows. The bellows can be constructed to exert an elastic pressure in place of the springs B.
Les roulettes peuvent etre 6quipees d'un micro-interrupteur 6tabli de maniere ä com- mander 1'arret du courant de matieres abrasi- ves lorsque la charge n'est plus appliqu6e sur les ressorts des roulettes. The rollers can be equipped with a micro-switch established in such a way as to control the stopping of the flow of abrasive materials when the load is no longer applied to the springs of the rollers.
La r6cuperation des matieres abrasives et 1e ramassage des particules de dechets s'effec- tuent par Tune ou Pautre des tubulures de rac- cord 12 ou 13. Les matieres solides tombent 6videmment au fond du capot ; c'est pourquoi, lorsque 1'appareil est utilis6 sur une surface verticale, la majeure Partie de ces maueres est evacu6e par la tubulure de raccord 12 tandis que si Pappareil est utilis6 en contact avec la face inf6rieure dune aire horizontale, ces ma- tieres sont evacuees en majeure Partie par la tubulure 13. Afin de bien repartir 1e courant d'air et d'6viter les obstructions de la conduite de recup6ration par les matieres abrasives, une plaque r6ductrice de d6bit 14 est dispos6e dans Tune des branches dune bifurcation en Y 15, les connexions Aant permutees lorsque 1'on passe dune surface verticale ä une surface ho rizontale. La pike de base 18 de la bifurcation (conduite de r6cup6ration) communique avec un collecteur ä poussiere en passant par un ap- pareil recup6rateur des matieres abrasives dans lequel ces matieres sont separees afin d'etre utilis6es ä nouveau. The recovery of abrasive materials and the collection of waste particles take place via one or the other of the connection pipes 12 or 13. The solid materials obviously fall to the bottom of the cover; this is why, when the apparatus is used on a vertical surface, the major part of these materials is evacuated by the connecting pipe 12 whereas if the apparatus is used in contact with the lower face of a horizontal surface, these matters are evacuated for the most part by the pipe 13. In order to properly distribute the air current and to avoid obstructions of the recovery pipe by abrasive materials, a flow-reducing plate 14 is placed in one of the branches of a bifurcation in Y 15, the Aant connections switch when passing from a vertical surface to a horizontal surface. The base pike 18 of the bifurcation (recovery line) communicates with a dust collector via an abrasive material recovery device in which these materials are separated in order to be used again.
0n peut pr6voir une tubulure arqu6e courte 17 ä une extr6mit6 de laquelle peut se brancher la tuyere 1 qui est maintenue au moyen d'un collier ä ressort 17a si Fon d6sire fiter 1e capot de 1'ouvrage sans interrompre 1e jet de particu- les abrasives ; dans ce cas, an dirige ce jet directement vers 1'appareil de recuperation. Cette disposition exclut tout risque d'avarie causde accidentellement par la matiere abrasive volante. Lorsque Fon pr6voit un interrupteur automatique, par exemple tel que celui dont il a 6t6 question au Sujet des roulettes, la tubu- lure arquee 17 devient superflue. A short arcuate pipe 17 can be provided at one end of which the nozzle 1 can be connected, which is held by means of a spring collar 17a if it is desired to fit the cover of the work without interrupting the jet of abrasive particles. ; in this case, an directs this jet directly towards the recovery device. This provision excludes any risk of damage caused accidentally by the flying abrasive material. Where an automatic switch is provided, for example such as that discussed in connection with rollers, arcuate tubing 17 becomes superfluous.
Pour maintenir Jans 1e capot une pression absolue notablement au-dessous de la pression atmosphdrique afin que 1e capot adhere ä Fou- vrage, an retire par la conduite de r6cup6ration 18 un volume d'air plus grand que celui qui passe par la conduite d'alimentation de la tuyere 1 au moyen d'un aspirateur par exem- ple. Une fraction de la diff6rence de volume resultante est constituee par Fair qui p6netre dans 1e capot autour de son embouchure, tandis que la partie restante de cette diff6rence entre dans 1e capot au moyen dune soupape de de- compression 19 charg6e par un ressort, sou- pape qui est reglee pour maintenir la pression absolue ä 1'int6rieur du capot, ä la valeur dd- siree au-dessous de la pression atmosphe- rique. In order to maintain in the cowl an absolute pressure substantially below atmospheric pressure so that the cowl adheres to the work, a greater volume of air is withdrawn through the recovery line 18 than that which passes through the exhaust pipe. supply of the nozzle 1 by means of a vacuum cleaner for example. A fraction of the resulting volume difference is made up of air which enters the cowl around its mouth, while the remainder of this difference enters the cowl by means of a spring-loaded decompression valve 19, under pressure. which is regulated to maintain the absolute pressure inside the cowl at the desired value below atmospheric pressure.
Quand 1e capot doit etre ddplac6 Sur la sur- face ä traiter, Fair y p6netre par une soupape 20 compensatrice de vide commandde manuel- lement, cette commande s'effectuant au moyen d'un cäble flexible 21 et d'un levier ä manette 22 fix6 ä un manche (collier) 23. La soupape de d6compression 19 et la soupape 20 com- pensatrice de vide peuvent 6videmment etre group6es en une seule soupape. When the hood is to be moved onto the surface to be treated, air enters it through a manually controlled vacuum compensating valve 20, this control being effected by means of a flexible cable 21 and a joystick lever 22 attached to a handle (collar) 23. The pressure relief valve 19 and the vacuum compensating valve 20 can of course be combined into a single valve.
Le capot presente des fenetres d'observa- tion 24 garnies d'un grillage m6talhque protec- teur 25 comme cela est reprdsent6. En variante, les fenetres d'observation peuvent eire 6quip6es dune feuille de matiere transparente flexible qui rdsiste ä 1'attaque par les particules RTI ID="0003.0275" WI="8" HE="4" LX="1643"LY="476"> abra- sives. Des lampes eleetriques d'inspection 26 aident ä 1'examen de la surface en traitement ; elles sont aussi prot6gees. The cover has viewing windows 24 lined with a protective metal mesh 25 as shown. Alternatively, viewing windows may be fitted with a sheet of flexible transparent material which resists attack by RTI particles ID="0003.0275" WI="8" HE="4" LX="1643"LY=" 476"> abrasives. Electric inspection lamps 26 aid in the examination of the surface being treated; they are also protected.
Afin que la surface traitee soit recouverte 1e plus 6conoiniquement possible et pour ga- gner ainsi du temps, 1'appareil comprend aussi un chässis de guidage 27 support6 ä 1'int6rieur du capot et portant une s6rie de tiges paralleles 28 fixees par une extrdmit6 seulement. Gräce ä ces tiges, la tuyere de projection est obhg6e de suivre une trajectoire sinueuse, de Sorte que la bande de surface trait6e en une passe se raccorde correctement avec la bande balayee lors de la passe prdc6dente, sans laisser des zones de recouvrement inutiles ou un espace entre les bandes. Ce chässis 27 est incurv6 afin de maintenir la tuyere ä distance constante de la surface ä traiter et de realiser ainsi une lar- geur constante du jet conique ä Fendroit de son impact avec la surface. In order that the treated surface be covered as economically as possible and thus to save time, the apparatus also comprises a guide frame 27 supported inside the cover and carrying a series of parallel rods 28 fixed at one end only. . Thanks to these rods, the projection nozzle is obliged to follow a sinuous trajectory, so that the strip of surface treated in one pass joins correctly with the strip swept during the previous pass, without leaving unnecessary overlapping zones or a space between strips. This frame 27 is curved in order to maintain the nozzle at a constant distance from the surface to be treated and thus to achieve a constant width of the conical jet at the point of its impact with the surface.
Pour faciliter 1e r6glage en position du capot au commencement du traitement de cha- que aire et pour 6viter un recouvrement des aires, ou 1'existence d'un intervalle entre elles, an peut utiliser des reperes affectant par exem- ple la forme de fleches 29 qui d6terminent la surface couverte par 1e jet de la tuyere et par 1e moyen desquels la position du capot peut etre ajust6e ä partir de marques ä la craie Sur la surface de 1'ouvrage. En variante, an peut utiliser des ventouses de demarcation fixdes ä la surface de 1'ouvrage. Suivant une autre forme d'execution, an peut prevoir, ä 1'int6rieur du capot, des reperes au moyen desquels il peut eire mis en regard de faire ä traiter. Une autre possibilite consiste ä utiliser un cadre retractile 30 gräce auquel 1e capot peut etre plac6 en face dune aire dont an vient d'achever 1e trai- tement. Le cadre r6tractile 30 peut etre form6 d'eldments phants pour etre mis de cöt6 par 1'action des ressorts 31 lorsque Fon ne s'en sert pas. To facilitate adjustment of the position of the cover at the start of the treatment of each area and to avoid overlapping of the areas, or the existence of a gap between them, reference marks may be used, for example in the form of arrows. 29 which determine the area covered by the jet from the nozzle and by means of which the position of the cowl can be adjusted from chalk marks on the surface of the work. Alternatively, one can use demarcation suction cups attached to the surface of the work. According to another form of execution, an can provide, inside the cover, marks by means of which it can be placed opposite to do to be treated. Another possibility is to use a retractable frame 30 whereby the cover can be placed in front of an area which has just been treated. The retractable frame 30 can be made of thin elements to be set aside by the action of the springs 31 when not in use.
Dans une autre forme d'execution repr6sen- t6e ä la fig. 3, 1'appareil comprend des dlectro- aimants 32 relids au capot 5, lorsque 1'ouvrage ä traiter est en matiere ferro-magnetique. Ces electro-aimants peuvent supporter tout 1e poids de 1'appareil ou contribuer ä supporter ce poids en coopdration avec les organes de succion. 0n peut faire varier 1e courant d'excitation des dlectro-aimants afin de modifier 1e degr6 d'at- traction rdalisd. Lorsque les aimants doivent assumer completement 1e röle de Supports, la garniture d'dtanchditd en caoutchouc 7 West pas indispensable. Le courant est amen6 aux dlectro-aimants par des conducteurs flexibles 33. En variante, an peut pr6voir des aimants permanents dispos6s par paires, de teile ma- niere que leurs champs puissent etre opposds lorsque 1'on doit enlever 1'appareil de la sur- face ä traiter. In another embodiment shown in FIG. 3, the apparatus comprises electromagnets 32 connected to cover 5, when the work to be treated is of ferro-magnetic material. These electromagnets can support the entire weight of the apparatus or contribute to supporting this weight in cooperation with the suction members. The excitation current of the electromagnets can be varied to alter the degree of attraction achieved. When the magnets have to completely assume the role of Supports, the rubber gasket 7 is not essential. Current is supplied to the electromagnets by flexible conductors 33. Alternatively, permanent magnets can be provided arranged in pairs so that their fields can be opposed when the apparatus is to be removed from the surface. - side to be treated.
Dans une autre forme d'exficution, an peut utiliser des ventouses 34 montees Sur 1e capot comme 1e montre la fig. 4, ces ventouses dtant relides ä une source de vide. Tout comme les moyens magn6tiques, ces ventouses peuvent supporter 1e poids entier ou seulement une par- tie de ce poids. De meme, an peut omettre la garniture d'dtanchditd en caoutchouc lorsqu'elle West pas indispensable. In another form of execution, one can use suction cups 34 mounted on the first cover as shown in FIG. 4, these suction cups being connected to a vacuum source. Like magnetic means, these suction cups can support the whole weight or only part of it. Similarly, the rubber sealing gasket can be omitted when it is not essential.
L'embouchure du capot peut etre confor- m6e de la maniere reprdsentde ä la fig. 5, qui s'adapte particulierement bien ä des surfaces courbes, alors que, si Fon a des organes d'at- tache magndtique, ou des ventouses, avec cette forme d'embouchure, il peut etre ddsirable que ces organes magndtiques et ventouses soient mont6s Sur des joints d'articulation universelle pour leur permettre de se preter ä la surface courbe. The mouth of the hood can be shaped as shown in FIG. 5, which adapts particularly well to curved surfaces, whereas, if one has magnetic attachment members, or suction cups, with this shape of mouthpiece, it may be desirable for these magnetic members and suction cups to be mounted on universal joints to allow them to lend themselves to the curved surface.
Une variante d'exdcution est appliqude ä un chässis de Support tel que celui reprdsente dans la fig. 6 et qui possede des organes de Support magndtiques ou ä ventouses 34 placds aux angles du chässis Sur lequel 1e capot peut coulisser afin d'etre amen6 en face des diffd- rentes aires ä traiter. Les longerons 35 de ce chässis peuvent avoir une section circulaire et s'emmancher exactement dans un organe tubu- laire 36 au-dessus et au-dessous du capot. Si les longerons 35 sont tubulaires, an peut s'en servir pour transmettre la ddpression aux ven- touses situdes aux angles, ä partir dune tubu- lure de raccord 37. An alternative embodiment is applied to a Support frame such as that shown in FIG. 6 and which has magnetic or suction cup support members 34 placed at the corners of the frame on which the cover can slide in order to be brought in front of the different areas to be treated. The longitudinal members 35 of this frame can have a circular section and fit exactly into a tubular member 36 above and below the bonnet. If the beams 35 are tubular, they can be used to transmit the vacuum to the suction cups located at the corners, from a connection pipe 37.
Comme an 1'a dficrit en regard des fig. 4 et 5, les aimants ou les ventouses RTIID="0004.0276" WI="12" HE="4" LX="1694" LY="515"> peuvent sup- porter tout ou partie du poids et, dans ce der- nier cas, la garniture d'etanchditd en caout- chouc 7 West pas indispensable. As described with reference to figs. 4 and 5, the magnets or suction cups RTIID="0004.0276" WI="12" HE="4" LX="1694" LY="515"> can support all or part of the weight and, in this der- In any case, the rubber gasket 7 West is not essential.
Dans les exemples ddcrits ci-dessus, 1e ca- pot a une embouchure carree, mais an peut prevoir des capots de diverses formes telles que celles reprdsentees aux fig. 7 ä 10. Ils peu- vent eire rigides ou en un matdriau flexible qui permet au capot de se preter facilement ä la forme du contour limitant la surface ä traiter. In the examples described above, the cover has a square mouth, but covers of various shapes such as those represented in FIGS. 7 to 10. They can be rigid or of a flexible material which allows the cover to easily adapt to the shape of the contour limiting the surface to be treated.
Lorsque 1'appareil est en fonctionnement, 1'extrdmite la plus large du capot est appliquee sur la surface ä traiter et Fon commande 1'as- piration afin de provoquer une forte adhdrence du capot ä la surface sous 1'action de la pres- sion atmosphdrique. 0n met en action 1e jet de particules abrasives et Fon ddplace la tuyere selon les exigences du travail jusqu'ä ce que toute la surface limitee par la garniture d'dtan- ch6it6 au bord du capot ait 6t6 soumise ä 1'im- pact des particules abrasives et nettoyde au de-r6 voulu, ce que Fon peut vdrifier en obser- vant la surface de temps en temps par les fene- tres d'observation. Ort notera que la capacit6 de 1'appareil produisant 1'aspiration est & ter- min6e de teile maniere que la ddpression con- venable soit maintenue ä 1'intdrieur du capot malgre 1'admission d'un courant d'air par la tuyere de soufflage et malgrd de faibles infil- trations qui peuvent se produire entre la gar- niture d'dtanchdite et la surface en traitement. Si de telles infiltrations Wont pas lieu, la sou- pape de ddcompression sera maintenue en posi- tion ouverte. En raison de 1'dpaisseur relative- ment grande de la garniture d'dtanchditd, et de sa souplesse, 1e capot peut eire appliqud de fa@on satisfaisante, meme sur des parties d'un plaquage de bateau ou Sur d'autres surfaces qui sont traversees par des rangfies de tetes de rivets ou par des bandes de recouvrement ou par des joints, sans qu'il en resulte des rentrees d'air sensibles vers Fespace interne delimite par 1e capot. When the apparatus is in operation, the wider end of the hood is applied to the surface to be treated and the suction is controlled in order to cause a strong adhesion of the hood to the surface under the action of the pressure. atmosphere. The jet of abrasive particles is activated and the nozzle is moved according to the requirements of the work until the entire surface bounded by the gasket at the edge of the bonnet has been subjected to the impact of the nozzles. abrasive particles and cleaned as required, which can be checked by observing the surface from time to time through the observation windows. Ort will note that the capacitance of the apparatus producing the suction is terminated in such a way that the suitable vacuum is maintained inside the cowl despite the admission of a current of air through the exhaust nozzle. blowing and despite slight infiltrations which may occur between the sealing gasket and the surface being treated. If such seepage does not occur, the decompression valve will be kept in the open position. Due to the relatively large thickness of the gasket, and its flexibility, the cover can be satisfactorily applied even to parts of a boat's plating or other surfaces which are traversed by rows of rivet heads or by covering strips or by seals, without this resulting in significant air inflows towards the internal space delimited by the first cover.
Ort peut constater aussi que 1'appareil de soufflage comprend un capot pourvu d'organes collecteurs des particules abrasives, comme an 1'a decrit ci-dessus, mais dans lequel la diffe- rence de pression ä 1'interieur du capot et ä 1'exterieur West pas utilisde pour maintenir 1'appareil en contact avec la surface ä traiter, cet appareil etant monte sur un chässis de Sup port et pourvu d'au moins deux Organes d'aspi- ration en forme de coupelles dont chacune est relide ä la conduite d'aspiration afin d'y main- tenir une ddpression qui les fait adherer ä la surface de Fouvrage en dehors de Faire de cet ouvrage qu'il s'agit de nettoyer. Dans cette forme d'execution, la position du capot peut etre reglee librement par rapport aux coupelles d'aspiration et Fon peut ainsi fixer 1e capot en toutes positions ddsirees. Les coupelles d'aspi- ration portent, de pref6rence, des soupapes rd- ductrices de vide afin qu'elles puissent etre facilement detachees de la surface lorsqu'on doit mettre 1'appareil dans une nouvelle posi- tion. Les coupelles d'aspiration sont consti- tu6es de preference par un manchon elastique, en caoutchouc par exemple, dopt 1'epaisseur est suffisante pour parer aux inegalites ou ä la courbure de la surface Sur lesquelles elles doi- vent etre appliquees. It can also be seen that the blower apparatus comprises a cover provided with members for collecting the abrasive particles, as described above, but in which the difference in pressure inside the cover and 1 the exterior is not used to maintain the apparatus in contact with the surface to be treated, this apparatus being mounted on a support frame and provided with at least two Suction members in the form of cups, each of which is connected to the suction pipe in order to maintain a depression there which causes them to adhere to the surface of the work outside of Make this work which it is a question of cleaning. In this embodiment, the position of the cover can be adjusted freely with respect to the suction cups and Fon can thus fix the first cover in any desired position. The suction cups preferably carry vacuum reducing valves so that they can be easily detached from the surface when the apparatus has to be moved to a new position. The suction cups are preferably constituted by an elastic sleeve, of rubber for example, of sufficient thickness to compensate for unevenness or curvature of the surface to which they are to be applied.
Les formes d'execution decrites plus haut comprennent une tuyere au moyen de laquelle les particules abrasives sont projetdes Sur Fou- vrage par 1'action d'un courant d'air. Ort peut enfin prevoir des moyens tels qu'une roue tour- nante pour lancer les particules abrasives sur 1'ouvrage. The embodiments described above comprise a nozzle by means of which the abrasive particles are projected onto the work by the action of an air current. Ort can finally provide means such as a rotating wheel to throw the abrasive particles on the work.
Claims (26)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB314063X | 1952-05-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH314063A true CH314063A (en) | 1956-05-31 |
Family
ID=10322626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH314063D CH314063A (en) | 1952-05-15 | 1953-05-15 | Apparatus for projecting solid abrasive particles onto a work to be treated |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH314063A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3981104A (en) * | 1975-03-20 | 1976-09-21 | Texstar, Inc. | Grit blasting machine and method |
| US4232487A (en) * | 1978-05-25 | 1980-11-11 | Knox Manufacturing Co. | Abrading device |
| FR2537033A1 (en) * | 1982-12-03 | 1984-06-08 | Bruneau Edward | Anti-theft marking device for glass surfaces |
| US5588900A (en) * | 1993-05-23 | 1996-12-31 | Urakami Research & Development | Surface treating device |
| WO1999020435A1 (en) * | 1997-10-19 | 1999-04-29 | Gerard Pieper | Method and device for treating, especially cleaning, abrasive clearing or stripping of coatings, graffiti or other superficial soiling on parts, work pieces or surfaces |
-
1953
- 1953-05-15 CH CH314063D patent/CH314063A/en unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3981104A (en) * | 1975-03-20 | 1976-09-21 | Texstar, Inc. | Grit blasting machine and method |
| US4232487A (en) * | 1978-05-25 | 1980-11-11 | Knox Manufacturing Co. | Abrading device |
| FR2537033A1 (en) * | 1982-12-03 | 1984-06-08 | Bruneau Edward | Anti-theft marking device for glass surfaces |
| US5588900A (en) * | 1993-05-23 | 1996-12-31 | Urakami Research & Development | Surface treating device |
| WO1999020435A1 (en) * | 1997-10-19 | 1999-04-29 | Gerard Pieper | Method and device for treating, especially cleaning, abrasive clearing or stripping of coatings, graffiti or other superficial soiling on parts, work pieces or surfaces |
| US6390898B1 (en) | 1997-10-19 | 2002-05-21 | Gerard Pieper | Method and device for treating, especially cleaning, abrasive clearing or stripping of coatings, graffiti or other superficial soiling on parts, work pieces or surfaces |
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