DE2103458C - Conveyor and sprayer for concrete mixes - Google Patents

Description

LindtmgsgemäK pressure regulator arranged. This rcüie; are Jii known and as such not Cienensiand der F.riindimg. In the present -> vndcn WtWc , however, they allow the air supply to be switched off in the case of

\ n Hand of the drawings is, for example, a guiding tower of the erliiulunüsnemiilsen FörJeriiru! Spi it / device described. F.s / eiut

i ι g. I cut through m lliiss v'.is demand and see

I; _ 2 a F.iiizcldars.icHunn eini · .ers beselileuiiwill; in the area of Voibc-schlcimigc- ■ Great! it 2 remains negligible. In other words

I raiispi> rtuesch \ undiukeH dart Reibimüs \ lusie above

■ sleii- uen ise.

ii.m.ill I i '_'- ■ i has the conveying ".ü em lordci-' ■■ r 1 aiii, the aiii sealer inside:;>: i a vcr-YiLKirnien armor or with -.ir.ci \ rv:;;:. -;: De arranged -.- ide screw conveyor 4 'not ^K: - ..' mc. i ;; i ■, is seen in the I-ordcrrohr I. '.!. urs ciariie-sielUe Am lieb cici Sehn.Λ. t kn-.:i ■■■ borrowed Weis ,, with a fuel ^ :;, L, FLV •! ". oior or alvr also depending on the n Guild standing Inc-ru'elo .n pneumatically or,: ·.:. Be driven automatically. s ·. dal 'dre 1 "nler-.:; corner 4 by switching off the l'ilViiluhr can be quiet ..i / t.

D.r in the drawing only aiiLvdcuU '.. -Xuliiab «.-. Hicr 6 can be used to facilitate transport of the (,,. on the conveyor pipe screwless / B with Ue's flanks and Fxzcntklcmmen. detachable

25 th. The gain
not by increased
ground α.

In operation, the tertiary arrives. mixed with water and if necessary with the necessary additives preconditioned concrete or mottled -mixed in the funnel 6 is that (ionic to be counted the uniform slipping of the Misciiiiiii; sniasse supported by vibrations of the vibrator 7.

Kt a heat effect aiii ervvimschi the mixture mass. the Yorhcschleiinigerrohr can - "are provided in a resistance or high frequency heating Natüihch cmc is also known per se by means of steam heating, however, \ eibrenniiiigsgasen ..of Thermool d \ irch coils conceivable ware cmc iemtiuhUgc ThenuosUltegelunu in the IctztLienamilcn cases less easy n.:. accomplish than with a primary electrical heating method. If electrical heating is to be carried out, the accelerator tube 2 is provided with a tubular PI FF l-.ins.itz, in which heating wires are embedded around! the together with the \ orbcschlumgcrrohr 2 with its own flange when the (iewind Hn is attached to the AussioBkoiHis. The heating wires are designed for a low voltage of eiwa -U> V and run through the ΓI FF insert in a pull-out

\ n known mechanical or electrical 3 "stand of about .Vl cm at a lempcratur of

\ brators 7 make it easier for the !. !! ■.! Vien concrete mix.

The fiirder pipe 1 connects a compressed air ring nozzle IO <j in the conveying direction and an accelerator pipe 2 connected to it. the two compressed air rlingdüscn 10 and! Ου are identical in their construction FinzelheiKn in weseiu ¹ ^ ¹ ICiI, although in Fig. 1, two slightly different abbweichende construction .mc ind shown they check out of a possible different \ UTHORISATION the nozzle as part of the ( iesamtgciat.s surrendered.

The basic construction of the compressed air ring lon C "is a drying out of the concrete mass not to be feared, because the F. action time only briefly / and evaporating water cannot escape

I mc similar arrangement results in a High frequency heating. In contrast to the aforementioned Resistance radiant heating. in which the heat effect from aul.ien progresses inwards, this goes in the opposite direction with high-frequency heating. The warmth is inside d. H. in the core of the accelerator pipe 2 transport MörteNtroius generated and Vimi wanders inside out. The intense high Frequent electric field effect can be capacitive

du se η 10 or 10u can be found in Fig. 2. The 45 with a con-ring nozzle embedded in the PTFT 10 "has a socket 9". which are used as a capacitor or inductive with one inside Flanged extension of the conveyor pipe 1 from the coil are used. Because of the

is formed. In the case of the ring nozzle 10, the nozzle 9 is axial '-: -: -

passed through an air collecting space 11 surrounding it and then has a corresponding one (iewind for screwing to the accelerator tube 2. The air collecting space of the Riimüuse I0 </ is denoted by 11a. Each air collecting space has a connection piece for the compressed air .... _ ..

Infeeds 3 or 3 <j and at a front end 55 tend compact stream of material is torn and

One (iewind to take up the Überwurf-Hegen- strongly accelerated and arrives about in the second

thread 5 on the ejection cone. The ejection cone is the part of the pre-accelerator tube with the suction of the

via tin thread 8 or 8 "with the spray hose second compressed air ring nozzle 10. where it is under the

or to connect to the pre-accelerator pipe. Thrust of the air entering at about 5 to 6 atmospheres

The 60 located between the two ring nozzles is accelerated to its final speed. Pre-accelerator pipe 2 (Fig. I) is usually zy- In the event of a blockage on the pressure side

Lindrian, but in special cases it can be kept conical pressure, not shown, which is known per se. The extent of the taper. regulator in the air lines 3 and 3 «to ensure that two. H. the ratio of the inlet to the outlet see the nozzles 10 and 10a a pressure equalization cross-section at a certain pipe length, depends 65 and the screw conveyor instantly depends on the extent to which the increased friction is stopped. The screw 4 itself is in front of the screw 4 itself because of the losses then in the discharge cone compared to the total mortar plug produced by the thrust of the nozzle of the annular nozzle 10a in front of the screw conveyor 4 and the suction of the nozzle 10

The rounding of the accelerator 2 is an induction Coil cheaper.

The from the screw conveyor 4 in the Vorbeschleiinigerrohr The printed mixture mass experiences a first additional acceleration from the ring nozzle 10a air entering, the pressure of which is reduced to about 2.5 atmospheres.

the effects of a pressure flashback to a large extent safe, because the same pressures act on the mortar stopper from both sides. To restart After the malfunction has been eliminated, the ring nozzle is enlarged by simply turning the ejection cone of the nozzle IO, so that a larger amount of air is generated can set the stopper in motion. If the mixture delivery is started again, the Nozzle 10 set back to normal opening width.

At the end of the spraying operation, it is common to Blow through the pipe and hose system with rough grit for the purpose of cleaning. The screw conveyor in particular is subject to heavy wear and tear exposed. For this purpose, the pre-accelerator pipe 2 can be equipped with a split tank (not specifically shown) which is under compressed air and which is removed from the pipe through a simple shut-off device, for example a Schicber flap, can be shut off.

1 sheet of drawings

Claims (1)

1 2 and an essential Patent claims: borrowed izerinp-Ten compressed air consumption. As a disadvantage sees the need for two separate ones I. Conveyor and spraying device for concrete mix- tendon drives and a certain susceptibility to failure gen. especially for fiber, Leichiaüsireüat- 5 when clogged! opposite to. Especially the let / t- and or KunstsiolT concrete mixes. with a named defect expresses that at lying delivery pipe and a rotatable blockage of the spray / hose in it of the \ olle pressure stored conveyor tendons and a feed - the conveyor air strikes back and the bearings of the feed hopper and one at the ejection end of the finder worm and the drive in the axial direction raw res attached compressed air ring nozzle. d .ι - io heavily loaded, which in the case of accumulations / u Belriebs Störruiidurch marked so that the rings can lead. nozzle (K) (O in a cylinder or in a conveyor. towards the slightly conical pre-accelerator pipe, a feed and spray device to the entrance (2) opens out, at the other end of which a toilet can be simplified aniricbsicchncn and The larger compressed air ring nozzle (10) resembles or equals the harmful foils of a compressed air blowback Speaking of the conicity of the accelerator - hot e \ entual blockages of the spray nozzle or pipe with a slightly reduced cross-section of the outer hose. is stolen. to which then in well-known Die l.i ^ urn; thick AiitgaU: it follows with a sul- Way d> · 'spray hose then connects the delivery and spraying device for concrete mixes. 2. (ier and a rotatably mounted For Dusen-Rmgspalt. the screw and a feed hopper as well as with -V Cierat after \ ns; uch 2. thereby gek.nn- one attached to the ejection end of the delivery pipe. that an ejection cone with a top compressed air ring nozzle is fastened in such a way that the ring nozzle throwing thread (5) is rotatably attached to the wall of the air m cm cylindrical or slightly in the conveying direction collecting space (11.11 ") and the conical Besehleui.igerrohr opens, at its andamit opposite the nozzle nozzle (9.9 ”) axially L ^; nde another compressed air ring nozzle can be slid. _c | _{K. n orcr,.} ^ speaking of the conicity of the 4. Gene according to one of claims I to 3. 30 accelerates its slightly reduced cross-section as a result marked, ^ ß the pre-accelerator section is screwed to "which is then in pipe (2) is connected to the spray hose via a shut-off device with a known V-way, The split container under air pressure has the advantage that on the one hundred is feed screw that is used in the known device .v device according to one of claims I to 4. 35 is required. can be dispensed with, characterized in that the pre-accelerator is further proposed that gerrohr (2) is heatable. _{cinc or b;. ldc} compressed air ri-.g nozzles one stepless 6. Device according to one of claims I to 5. have adjustable nozzle annular gap. This is characterized in that the pressure regulator in the annular gap adjustment can be arranged in an advantageous manner air supplies (3. 3a) . . _o achieve by having the discharge cone a union thread on the wall of the air plenum rotatably attached. It is thus axially displaceable with respect to the nozzle nozzle. For cleaning the spray equipment, especially the _. 45 hoses, is usually broken chippings The t-.rrind relates to a conveying and spraying device of medium grain size after completion of the spraying work ι- ^BctonmiSL ' ^now i ^{: cn} · especially for fiber. blown through the pipes. So as not to avoid unnecessary wear and tear from the light-weight aggregate and / or plastic-concrete mix pipe and screw conveyor with a hanging conveyor pipe and a d-aria. add, the pre-accelerator pipe via a discharge funnel and a compressed air ring nozzle attached to the discharge end of the conveyor shut-off member with a pipe under air pressure is furthermore, according to the invention, rotatably mounted conveyor screw and an opener. Spl.tt container to connect. For wet spraying are primarily KoI- According to a further advantageous embodiment benpumping. Screw conveyors and driving devices. of the device designed according to the invention is that (Double boiler) has been used. Around their post-accelerator tube can be heated. This is an advantage Avoid letl intermittent loading when cold-curing or thermoplastic plastics and the feeding and splitting process to be used continuously, or under-design when used in cold, is also already a conveyor device for rooms exposed to spraying, when the early strength of the concrete capable concrete mixes have been developed in which or mortar is increased by heat treatment the forward air of the concrete mix should be at the transition from 60. However, this only works if you have the the machine is fed to the spray hose. already when starting the concrete mix with Uieses Device consists of a delivery pipe with a given heat in the mixture for as long as possible transport screw, a feed hopper with a can hold. further the funnel shape adapted mixing and finally it is for conveying reasons Feed screw and a compressed air ring nozzle on the 65 are advantageous, which come from a common compressed air outlet of the delivery pipe to the fuel hose line fed feed lines to the nozzles (German disclosure document 1 684 204). This differing, but maximally limited, subject matter already has the advantage of one-man operation to load ken. In the supply lines there are therefore