EP0303641A1 - Transport ventilator. - Google Patents
Transport ventilator.Info
- Publication number
- EP0303641A1 EP0303641A1 EP19880901531 EP88901531A EP0303641A1 EP 0303641 A1 EP0303641 A1 EP 0303641A1 EP 19880901531 EP19880901531 EP 19880901531 EP 88901531 A EP88901531 A EP 88901531A EP 0303641 A1 EP0303641 A1 EP 0303641A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan wheel
- cone
- fan
- blower
- drive motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D23/00—Other rotary non-positive-displacement pumps
- F04D23/001—Pumps adapted for conveying materials or for handling specific elastic fluids
- F04D23/003—Pumps adapted for conveying materials or for handling specific elastic fluids of radial-flow type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
Definitions
- blowers In particular in the woodworking industry, blowers are used which extract chips, dust and sawdust generated at work at the workplace and convey them via separators in silos. Often, several suction devices are connected to one blower. Before the air, shavings and / or shegemehlgemir.ch is passed through the actual blower, it passes through a separator in which larger and in particular heavy parts are separated out by gravity.
- the present invention relates to a blower for converting air or for conveying bulk material, with a fan wheel, a drive motor and an intake pipe.
- Blowers of this type are known. They work as a centrifugal fan in that the sucked-in air or the sucked-in mixture enters the fan in the axial direction with respect to the fan axis, is deflected there and accelerated in the radial direction, after which the Air or the bulk material carried in it is thrown out of the blower in the tangential direction and conveyed onward.
- blowers have been in operation for many years, especially as transport blowers for hay, for example, but also in the woodworking industry.
- a second disadvantageous point of such centrifugal blowers is that any large, solid parts which were not separated out by the separator are enormously accelerated radially and tangentially therein after entering the blower and subsequently hit the wall of the outlet pipe like a bullet.
- the abrasive effect of the impact leads to severe wear of the material and even deformation of the wall in older installations. In the most extreme case, it even leads to perforations in the wall.
- a blower which works like a radial fan and avoids the aforementioned disadvantages.
- This problem is solved by a blower according to the preamble of claim 1, which is characterized in that the suction pipe in front of the fan wheel is branched into two separate pipes, which together have a cross-sectional area which corresponds at least to the cross section of the suction pipe before the branching, and that the branched pipes open into the larger opening of a common cone, the fan wheel being arranged on the output side in front of the cone, and that the drive shaft of the fan wheel is guided in the axial direction towards the cone outwards into the area between the two branched pipes and from outside the drive motor located is driven.
- It is the merit of the present invention to provide a fan which is hardly prone to clogging and is therefore extremely maintenance-friendly.
- An example of the blower according to the invention is shown in simplified form in the drawings and is explained on the basis of the following description.
- Figure 1 An overall view of the blower in elevation;
- Figure 2 shows a section along the line A-A in Figure 1;
- Figure 3 a view of the fan in Figure 1 from above in plan and partially in section along the line B-B in Figure 1;
- Figure 4 the fan wheel;
- FIG. 5 the blower with associated distributor bell.
- a blower for converting air or for conveying bulk material is understood to mean the entire system, which comprises at least one suction pipe, a blower with drive motor and fan wheel, and possibly a blowing or delivery pipe.
- the suction pipe which leads from the suction point or into the area of the actual fan, is designated by 1.
- the intake pipe 1 branches into two separate pipes 2. Both pipes each form an arc, which, however, can also be composed of straight pipe sections.
- the two pipes reunite by opening into the larger opening of a cone 4.
- the cone 4 then opens into the housing of the fan, which in turn can open into a blowing or delivery pipe.
- the fan wheel 8 can, however, also be open, that is to say not be enclosed in a housing, as is shown in FIG. 1.
- the fan wheel 8 is now driven by means of a drive shaft 5, which is guided outwards in the axial direction against the cone into the region 7 between the two branched tubes 2.
- the drive shaft 5 passes through the mounting plate 11, in which it is held and supported by means of a bearing tube 3.
- this bearing tube 3 is again supported between the tubes 2 and the shaft 5 is equipped with toothed belt or V-belt wheels 6.
- the bearing tube which can be extended upwards is in turn held with the brackets 16 and 17 on the mounting plate 11 or on the two tubes 2.
- a suitable drive motor which can be mounted some distance from the fan, drives the Shaft 5 via toothed belt or V-belt.
- this motor can also be arranged directly between the two branched tubes 2, from where it drives the drive shaft 5 directly or via a belt or gear transmission.
- the blower can also have a motor platform 15 over the branching of the intake pipe 1, which is fixedly mounted there and can support the motor.
- a blower of this type is particularly suitable for the transport of bulk goods that have to be introduced from above into a silo, for example.
- the same arrangement as shown in Figure 1 is also advantageously used as a transport blower for the disposal of sawdust, wood shavings and the like material from workshops in the woodworking industry or from the woodworking industry. So far, silo systems have already been used for such disposal.
- Such a silo has an accessible floor 10 in the upper area.
- the pipe by means of which the wood waste is fed to the silo, leads through this intermediate floor 10 into the actual interior of the silo.
- the intermediate floor 10 also has further openings, each of which has a filter bag sealing are attached with their opening towards the bottom. The bottom of these filter bags is suspended from the top.
- Another pipe leads from the space above the intermediate floor 10 of the silo back to the workshop.
- the efficient operation of such a waste disposal system now requires a powerful fan, which ensures the necessary air turnover.
- the air heated in the workshop in the winter half-year is sucked in together with the wood waste and pumped into the interior of the silo.
- the blower shown in Figure 1 is particularly suitable for the device just described. For this purpose, it is inserted into the recess in the intermediate floor 10 in the vertical conveying direction. In the area of the two separate tubes 2, it is provided with a mounting plate 11 which is screwed firmly onto the intermediate floor 10 and in which the holder 16 of the bearing tube 3 is also mounted. Struts 12 are provided between the mounting plate 11 and the tubes 2 for reinforcement. This ensures that the entire fan has a secure hold on the mounting plate 11 finds.
- a special vibration and vibration can be inserted between the mounting plate 11 and the intermediate floor 10 as an absorbent sealing material.
- the fan wheel 8 is openly mounted on the drive shaft 5. The from above on the drive shaft 5. The material arriving from above and sucked in by the fan wheel 8 is thrown radially away from the fan axis by the rotation of the blades 8, so that the silo is filled evenly.
- a flange 13 is arranged in the conveying direction in front of the fan wheel 8, which flange forms a fixed fan wall to the fan wheel 8 and is fastened to the cone 4 by means of the flange struts 14.
- This flange also serves as a connection element for any blow or delivery pipe which is to be connected to the blower. This is particularly necessary when the air or any bulk material is to be conveyed further by the blower.
- FIG. 2 shows the fan described in section along the line AA of Figure 1. It can be seen how the drive shaft 5 is mounted in a tube, which in turn is connected to the pipe holder 16 with the pipes 2. The motor platform 15 above the branching of the intake pipe 1 can also be seen again.
- FIG. 3 finally shows the fan according to the invention in plan view, which shows an arrangement of the struts 12, for example.
- the fan wheel 8 is covered on the side remote from the cone 4 with a disk 9, which acts as a centrifugal disk.
- the blower according to the invention can not only be installed vertically, as shown in FIG. 1, but also a horizontal or inclined installation position is conceivable, especially if it is only intended to convert air. Such an application is primarily intended for the ventilation of street tunnels.
- a blower with the features essential to the invention brings an increased air conversion with the same engine power. Furthermore, the conveying performance of bulk material is better in comparison to centrifugal blowers. Damage to the housing is also impossible because the. transported goods are not forced to change direction abruptly. Across from Centrifugal blowers also have no material deposits or even blockages from the material being conveyed.
- the solid parts are distributed more evenly in the silo room because the discharge takes place in all directions by 360 °.
- a swirling device is therefore superfluous.
- the fan wheel thus acts like a centrifugal disc with regard to the solids.
- a distribution bell 18 is advantageously mounted on the intermediate silo floor 10 by means of a tube 20 welded to its upper opening 19.
- the conveying fan can then be removed for inspection work independently of the distributor bell 18.
- the distributor bell 18 shields the fan wheel 8 from the silo room. With the fan wheel 8 running, the material to be conveyed is thrown against the inner wall of the distributor bell 18. Due to the rotation of the fan wheel 8, a circulating flow is simultaneously superimposed on the conveyed air, so that the air within the bell 18 spirals downward moved down. The extracted solids are actively dragged down.
- the material to be conveyed would only be accelerated radially outwards and would only fall down due to gravity.
- the dust density near the filters would be too great, so that they would dust up too soon.
- the distributor bell 18 With the distributor bell 18, however, the material to be conveyed in the silo room is accelerated downwards. The air blown down is redirected before the filling level of the silo, whereby the carried parts are deposited. The air then rises again in the outer area of the silo interior and flows outside around the distributor bell 18 to the filter bags.
Abstract
La soufflante comprend un conduit d'aspiration (1) se divisant en deux conduits (2) qui débouchent dans un cône (4) suivi d'un rotor de ventilateur (8). Le rotor est entraîné par un arbre (5) qui traverse le cône (4) et aboutit dans l'espace (7) situé entre les deux conduits (2). L'arbre (5) est entraîné soit directement par un moteur, soit par l'intermédiaire d'une transmission à engrenages ou à courroie.The blower comprises a suction duct (1) dividing into two ducts (2) which open into a cone (4) followed by a fan rotor (8). The rotor is driven by a shaft (5) which passes through the cone (4) and ends in the space (7) located between the two ducts (2). The shaft (5) is driven either directly by a motor or through a gear or belt transmission.
Description
T R A N S P O R T G E B L A E S E T R A N S P O R T G E B L A E S E
Insbesondere in der holzbearbeitenden Industrie werden Gebläse eingesetzt, die bei der Arbeit anfallende Späne, Staub und Sägemehl am Arbeitsplatz absaugen und über Ab¬ scheider in Silos fördern. Oftmals sind an einem Gebläse mehrere Absaugvorrichtungen angeschlossen. Bevor das Luft-, Späne-, und/oder Sägemehlgemir.ch durch das eigent¬ liche Gebläse geführt wird, passiert es einen Abscheider, in dem grössere und insbesondere schwere Teile durch die Schwerkraft ausgesondert werden.In particular in the woodworking industry, blowers are used which extract chips, dust and sawdust generated at work at the workplace and convey them via separators in silos. Often, several suction devices are connected to one blower. Before the air, shavings and / or Sägemehlgemir.ch is passed through the actual blower, it passes through a separator in which larger and in particular heavy parts are separated out by gravity.
Die vorliegende Erfindung betrifft ein Gebläse zur Um¬ setzung von Luft oder zur Beförderung von Schüttgut, mit einem Ventilatorrad, einem Antriebsmotor und einem An¬ saugrohr. Gebläse dieser Art sind bekannt. Sie arbeiten als Zentrifugalgebläse, indem die angesaugte Luft oder das angesaugte Gemisch bezüglich der Ventilatorachse in axialer Richtung in das Gebläse eintritt, dort umgelenkt und in radialer Richtung beschleunigt wird, wonach die
Luft beziehungsweise das in ihr mitgeführte Schüttgut in tangentialer Richtung aus dem Gebläse ausgeschleudert und weiterbefördert wird. Solche Gebläse sind seit vielen Jahren in Betrieb, besonders als Transportgebläse zum Beispiel für Heu, aber auch in der holzverarbeitenden Industrie. Ein zweiter nachteiliger Punkt solcher Zentri¬ fugalgebläse besteht darin, dass allfällige grössere feste Teile, die vom Abscheider nicht ausgeschieden wurden, nach Eintritt im Gebläse darin radial und auch tangential enorm beschleunigt werden und in der Folge geschossartig auf die Wandung des Austrittsrohrs auf¬ schlagen. Entsprechend kommt es durch die abrasive Wirkung des Aufschlages zu einer starken Abnutzung des Materials und bei älteren Einrichtungen sogar zu Defor¬ mierungen der Wandung. Im extremsten Fall führt es gar zu Perforierungen der Wandung.The present invention relates to a blower for converting air or for conveying bulk material, with a fan wheel, a drive motor and an intake pipe. Blowers of this type are known. They work as a centrifugal fan in that the sucked-in air or the sucked-in mixture enters the fan in the axial direction with respect to the fan axis, is deflected there and accelerated in the radial direction, after which the Air or the bulk material carried in it is thrown out of the blower in the tangential direction and conveyed onward. Such blowers have been in operation for many years, especially as transport blowers for hay, for example, but also in the woodworking industry. A second disadvantageous point of such centrifugal blowers is that any large, solid parts which were not separated out by the separator are enormously accelerated radially and tangentially therein after entering the blower and subsequently hit the wall of the outlet pipe like a bullet. Correspondingly, the abrasive effect of the impact leads to severe wear of the material and even deformation of the wall in older installations. In the most extreme case, it even leads to perforations in the wall.
Es wurden öfters Ueberlegungen angestellt, die Zentrifu¬ galgebläse durch andere, beispielsweise Axialgebläse zu ersetzen. Folgende Ueberlegungen führten jedoch immer von einem Axialgebläse weg. Einerseits wird nämlich durch einen Antriebsmotor im Rohr eine erhebliche Querschnitts¬ verengung bewirkt, zum anderen ist ein solcherart einge¬ bauter Motor ständig den Einschlägen der Festteile ausge-
setzt und somit durch solche Schläge gefährdet. Andrer¬ seits bietet er selbst Halt für sich daran aufbauendes Material, das im ungünstigsten Fall zu einer Verstopfung des Gebläses führen kann. Ein weiterer Nachteil eines axial ins Rohr eingebauten Motors ist darin zu sehen, dass es für allfällige Wartungs- und Reparaturarbeiten schlecht zugänglich ist.Considerations were often made to replace the centrifugal fans with other, for example axial, fans. However, the following considerations always led away from an axial fan. On the one hand, a drive motor in the tube causes a considerable cross-sectional constriction; on the other hand, a motor installed in this way is constantly exposed to the impacts of the solid parts. sets and thus endangered by such blows. On the other hand, it itself provides support for the material that builds on it, which in the worst case can lead to a blockage of the fan. Another disadvantage of an axially installed motor in the pipe is that it is difficult to access for any maintenance and repair work.
Es ist die Aufgabe der vorliegenden Erfindung, ein Ge¬ bläse zu schaffen, welches wie ein Radialventilator arbeitet und die vorgenannten Nachteile vermeidet. Diese Aufgabe löst ein Gebläse gemäss Oberbegriff des Patentanspruches 1, welches sich dadurch auszeichnet, dass das Ansaugrohr vor dem Ventilatorrad in zwei ge¬ trennte Rohre verzweigt ist, die zusammen eine Quer¬ schnittsfläche aufweisen, die mindestens dem Querschnitt des Ansaugrohres vor der Verzweigung entspricht, und dass die verzweigten Rohre in die grössere Oeffnung eines gemeinsamen Konus münden, wobei ausgangsseitig vor dem Konus das Ventilatorrad angeordnet ist, und dass die Antriebswelle des Ventilatorrades in Axialrichtung gegen den Konus hin nach aussen in den Bereich zwischen den beiden verzweigten Rohren geführt und vom ausserhalb der Rohre befindlichen Antriebsmotor getrieben ist.
Es ist das Verdienst der vorliegenden Erfindung, ein Ge¬ bläse zu schaffen, welches kaum zu Verstopfungen neigt und somit äusserst unterhaltsfreundlich ist. In den Zeichnungen ist ein Beispiel des erfindungsge- mässen Gebläses vereinfacht dargestellt und anhand der nachfolgenden Beschreibung erläutert.It is the object of the present invention to provide a fan which works like a radial fan and avoids the aforementioned disadvantages. This problem is solved by a blower according to the preamble of claim 1, which is characterized in that the suction pipe in front of the fan wheel is branched into two separate pipes, which together have a cross-sectional area which corresponds at least to the cross section of the suction pipe before the branching, and that the branched pipes open into the larger opening of a common cone, the fan wheel being arranged on the output side in front of the cone, and that the drive shaft of the fan wheel is guided in the axial direction towards the cone outwards into the area between the two branched pipes and from outside the drive motor located is driven. It is the merit of the present invention to provide a fan which is hardly prone to clogging and is therefore extremely maintenance-friendly. An example of the blower according to the invention is shown in simplified form in the drawings and is explained on the basis of the following description.
Es zeigt,It shows,
Figur 1: Eine Gesamtansicht des Gebläses im Aufriss; Figur 2: einen Schnitt längs der Linie A-A in Figur 1; Figur 3: eine Ansic-ht des Gebläses in Figur 1 von oben im Grundriss und teilweise im Schnitt längs der Linie B-B in Figur 1; Figur 4: das Ventilatorrad;Figure 1: An overall view of the blower in elevation; Figure 2 shows a section along the line A-A in Figure 1; Figure 3: a view of the fan in Figure 1 from above in plan and partially in section along the line B-B in Figure 1; Figure 4: the fan wheel;
Figur 5: das Gebläse mit zugehöriger Verteilerglocke. In der Praxis wird unter einem Gebläse zur Umset-zung von Luft oder zur Beförderung von Schüttgut die gesamte Anla¬ ge verstanden, welche mindestens ein Ansaugrohr, ein Ge¬ bläse mit Antriebsmotor und Ventilatorrad, sowie unter Umständen ein Blas- oder Förderrohr umfasst. In der Zeichnung ist das Ansaugrohr, welches von der'oder den Ansaugstellen bis in den Bereich des eigentlichen Ge¬ bläses führt, mit 1 bezeichnet. Vor dem Ventilatorrad δ
verzweigt sich das Ansaugrohr 1 in zwei getrennte Rohre 2. Beide Rohre bilden je einen Bogen, welcher jedoch auch aus geraden Rohrabschnitten zusammengesetzt sein kann. Unmittelbar vor dem Ventilatorrad 8 vereinigen sich die beiden Rohre wieder, .indem sie in die grössere Oeffnung eines Konus 4 münden. Der Konus 4 mündet dann in das Gehäuse des Ventilators, welches seinerseits in ein Blas¬ oder Förderrohr münden kann.Figure 5: the blower with associated distributor bell. In practice, a blower for converting air or for conveying bulk material is understood to mean the entire system, which comprises at least one suction pipe, a blower with drive motor and fan wheel, and possibly a blowing or delivery pipe. In the drawing, the suction pipe, which leads from the suction point or into the area of the actual fan, is designated by 1. In front of the fan wheel δ the intake pipe 1 branches into two separate pipes 2. Both pipes each form an arc, which, however, can also be composed of straight pipe sections. Immediately in front of the fan wheel 8, the two pipes reunite by opening into the larger opening of a cone 4. The cone 4 then opens into the housing of the fan, which in turn can open into a blowing or delivery pipe.
Das Ventilatorrad 8 kann aber auch offen, das heisst nicht in einem Gehäuse eingefasst sein, wie das in der Figur 1 gezeigt ist. Das Ventilatorrad 8 wird nun mittels einer Antriebswelle 5 angetrieben, die in Axialrichtung gegen den Konus hin nach aussen in den Bereich 7 zwischen die beiden verzweigten Rohre 2 geführt ist. Die Antriebs¬ welle 5 führt durch die Montageplatte 11, in welcher sie mittels einem Lagerrohr 3 gehalten und gelagert ist. Endseitig ist dieses Lagerrohr 3 nochmals zwischen den Rohren 2 gelagert und die Welle 5 ist mit Zahnriemen¬ oder Keilriemenrädern 6 ausgerüstet. Das nach oben ausfahrbare Lagerrohr wiederum ist mit den Halterungen 16 und 17 an der Montageplatte 11 bzw. an den beiden Rohren 2 gehalten. Ein geeigneter Antriebsmotor, der in einiger Entfernung vom Gebläse montiert sein kann, treibt die
Welle 5 über Zahnriemen oder Keilriemen an. Es ist auch denkbar, diesen Motor auf der Montageplatte 11 zu mon¬ tieren. Bei einer weiteren Ausführung kann er auch direkt zwischen den beiden verzweigten Rohren 2 angeordnet sein, von wo er die Antriebswelle 5 direkt oder über ein Riemen- oder Zahnradgetriebe antreibt. Das Gebläse kann auch über der Verzweigung des Ansaugrohres 1 eine Motorplattform 15 aufweisen, die dort fest montiert ist und den Motor tragen kann. Ein Gebläse dieser Art eignet sich besonders zur Beförderung von Schüttgut, das von oben zum Beispiel in ein Silo eingebracht werden muss . Die gleiche Anordnung wie in Figur 1 gezeigt findet auch vorteilhaft Verwendung als Transportgebläse für die Entsorgung von-- Sägemehl, Hobelspänen und dergleichen Material aus Werkstätten des holzverarbeitenden Gewerbes oder aus der holzverarbeitenden Industrie. Für eine solche Entsorgung stehen bisher schon Siloanlagen im Einsatz. Ein solches Silo weist im oberen Bereich einen begehbaren Zwischenboden 10 auf. Das Rohr, mittels welchem der Holzabfall dem Silo zugeführt wird, führt durch diesen Zwischenboden 10 hindurch ins eigentliche Siloinnere. Der Zwischenboden 10 weist daneben weitere Oeffnungen auf, über denen jeweils dichtend Filtersäcke
mit ihrer Oeffnung gegen unten angebracht sind. Der Sackboden dieser Filtersäcke ist jeweils oben aufgehängt. Aus dem Raum über dem Zwischenboden 10 des Silos führt dann ein weiteres Rohr wieder zurück in die Werkstatt. Der effiziente Betrieb einer solchen Entsorgungsanlage erfordert nun .ein kräftiges Gebläse, welches für den nötigen Luftumsatz sorgt. Die im Winterhalbjahr geheizte Luft in der Werkstatt wird ja mitsamt dem Holzabfall angesaugt und ins Siloinnere gepumpt. Der Holzabfall verbleibt im Silo, während die als Fördermittel dienende Luft durch die Filtersäcke wiede'r zurück in die Werkstatt geblasen wird, sodass ihre Wärme nicht verlorengeht'. Das in der Figur 1 gezeigte Gebläse ist für die eben beschriebene Einrichtung besonders geeignet. Hierzu wird es in vertikaler Förderrichtung in die dafür vorgesehene Aussparung im Zwischenboden 10 eingesetzt. Im Bereich der beiden getrennten Rohre 2 ist es mit einer Montageplatte 11 versehen, die fest auf den Zwischenboden 10 geschraubt wird und in der auch die Halterung 16 des Lagerrohres 3 montiert ist. Zur Verstärkung sind Verstrebungen 12 zwischen der Montageplatte 11 und den Rohren 2 vorgesehen. Damit wird sichergestellt, dass das ganze Gebläse einen sicheren Halt auf der Montageplatte 11
findet. Um die Uebertragung von Schwingungen des Gebläses auf den Zwischenboden 10 zu vermeiden, kann zwischen die Montageplatte 11 und den Zwischenboden 10 ein spezielles, Erschütterungen und Schwingungen als absorbierendes Dichtungsmaterial eingelegt sein. Unten am Gebläse ist das Ventilatorrad 8 offen auf der Antriebswelle 5 montiert. Das von oben auf der Antriebswelle 5. Das von ober her ankommende, durch das Ventilatorrad 8 angesaugte Material wird durch die Rotation der Schaufeln 8 radial von der Ventilatorachse weggeschleudert, sodass das Silo ebenmässig gefüllt wird. Weiter ist in Föfderrichtung vor dem Ventilatorrad 8 ein Flansch 13 angeordnet, der eine feststehende Ventilatorwand zum Ventilatorrad 8 bildet und am Konus 4 mittels den Flanschverstrebungen 14 befestigt ist. Dieser Flansch er dient weiter als Anschlusselement für ein allfälliges Blas- oder Förder¬ rohr, welches an das Gebläse angeschlossen werden soll. Dies ist vor allem dann erforderlich, wenn die Luft oder allfälliges Schüttgut vom Gebläse aus noch weiterbe¬ fördert werden soll.The fan wheel 8 can, however, also be open, that is to say not be enclosed in a housing, as is shown in FIG. 1. The fan wheel 8 is now driven by means of a drive shaft 5, which is guided outwards in the axial direction against the cone into the region 7 between the two branched tubes 2. The drive shaft 5 passes through the mounting plate 11, in which it is held and supported by means of a bearing tube 3. At the end, this bearing tube 3 is again supported between the tubes 2 and the shaft 5 is equipped with toothed belt or V-belt wheels 6. The bearing tube which can be extended upwards is in turn held with the brackets 16 and 17 on the mounting plate 11 or on the two tubes 2. A suitable drive motor, which can be mounted some distance from the fan, drives the Shaft 5 via toothed belt or V-belt. It is also conceivable to mount this motor on the mounting plate 11. In a further embodiment, it can also be arranged directly between the two branched tubes 2, from where it drives the drive shaft 5 directly or via a belt or gear transmission. The blower can also have a motor platform 15 over the branching of the intake pipe 1, which is fixedly mounted there and can support the motor. A blower of this type is particularly suitable for the transport of bulk goods that have to be introduced from above into a silo, for example. The same arrangement as shown in Figure 1 is also advantageously used as a transport blower for the disposal of sawdust, wood shavings and the like material from workshops in the woodworking industry or from the woodworking industry. So far, silo systems have already been used for such disposal. Such a silo has an accessible floor 10 in the upper area. The pipe, by means of which the wood waste is fed to the silo, leads through this intermediate floor 10 into the actual interior of the silo. The intermediate floor 10 also has further openings, each of which has a filter bag sealing are attached with their opening towards the bottom. The bottom of these filter bags is suspended from the top. Another pipe leads from the space above the intermediate floor 10 of the silo back to the workshop. The efficient operation of such a waste disposal system now requires a powerful fan, which ensures the necessary air turnover. The air heated in the workshop in the winter half-year is sucked in together with the wood waste and pumped into the interior of the silo. The wood waste remains in the silo, while serving as conveying air is blown through the filter bags wiede'r back to the workshop, so that their heat is not lost '. The blower shown in Figure 1 is particularly suitable for the device just described. For this purpose, it is inserted into the recess in the intermediate floor 10 in the vertical conveying direction. In the area of the two separate tubes 2, it is provided with a mounting plate 11 which is screwed firmly onto the intermediate floor 10 and in which the holder 16 of the bearing tube 3 is also mounted. Struts 12 are provided between the mounting plate 11 and the tubes 2 for reinforcement. This ensures that the entire fan has a secure hold on the mounting plate 11 finds. In order to avoid the transmission of vibrations of the fan to the intermediate floor 10, a special vibration and vibration can be inserted between the mounting plate 11 and the intermediate floor 10 as an absorbent sealing material. At the bottom of the fan, the fan wheel 8 is openly mounted on the drive shaft 5. The from above on the drive shaft 5. The material arriving from above and sucked in by the fan wheel 8 is thrown radially away from the fan axis by the rotation of the blades 8, so that the silo is filled evenly. Furthermore, a flange 13 is arranged in the conveying direction in front of the fan wheel 8, which flange forms a fixed fan wall to the fan wheel 8 and is fastened to the cone 4 by means of the flange struts 14. This flange also serves as a connection element for any blow or delivery pipe which is to be connected to the blower. This is particularly necessary when the air or any bulk material is to be conveyed further by the blower.
In Figur 2 ist das beschriebene Gebläse im Schnitt längs der Linie A-A von Figur 1 gezeigt. Dabei ist ersichtlich, wie die Antriebswelle 5 in einem Rohr gelagert ist,
welches seinerseits mit der Rohrhalterung 16 mit den Rohren 2 verbunden ist. Man erkennt auch wieder die Mo¬ torplattform 15 über der Verzweigung des Ansaugrohres 1. Figur 3 zeigt schliesslich das erfindungsgemässe Gebläse im Grundriss, wodurch eine beispielsweise Anordnung der Verstrebungen 12 gezeigt ist.In Figure 2, the fan described is shown in section along the line AA of Figure 1. It can be seen how the drive shaft 5 is mounted in a tube, which in turn is connected to the pipe holder 16 with the pipes 2. The motor platform 15 above the branching of the intake pipe 1 can also be seen again. FIG. 3 finally shows the fan according to the invention in plan view, which shows an arrangement of the struts 12, for example.
Ein Ventilatorrad 8, wie es in einem erfindungsgemässen Gebläse verwendet werden kann, zeigt Figur 4. Das Ven¬ tilatorrad 8 ist auf der dem Konus 4 abgelegenen Seite mit einer Scheibe 9 abgedeckt, die als Schleuderscheibe wirkt. Das erfindungsgemässe Gebläse kann nicht nur vertikal eingebaut werden, wie das in der Figur 1 gezeigt ist, sondern auch eine horizontale oder geneigte Einbaulage ist denkbar, besonders dann, wenn es bloss zur Umsetzung von Luft dienen soll. Eine solche Anwendung ist vor allem zur Ent- bzw. Belüftung von Strassentunnels vorgesehen. Ein Gebläse mit den erfindungswesentlichen Merkmalen bringt bei gleicher Motorleistung einen erhöhten Luftumsatz. Weiter ist auch die erzielte Förderleistung von Schüttgut im Vergleich zu Zentrifugal¬ gebläsen besser. Zudem sind Gehäusebeschädigungen verun öglicht, da die. beförderten Güter zu keinen abrupten Richtungsänderungen gezwungen werden. Gegenüber
Zentrifugalgebläsen treten auch keine Material¬ ablagerungen oder gar Verstopfungen durch das Fördergut auf.A fan wheel 8, as can be used in a fan according to the invention, is shown in FIG. 4. The fan wheel 8 is covered on the side remote from the cone 4 with a disk 9, which acts as a centrifugal disk. The blower according to the invention can not only be installed vertically, as shown in FIG. 1, but also a horizontal or inclined installation position is conceivable, especially if it is only intended to convert air. Such an application is primarily intended for the ventilation of street tunnels. A blower with the features essential to the invention brings an increased air conversion with the same engine power. Furthermore, the conveying performance of bulk material is better in comparison to centrifugal blowers. Damage to the housing is also impossible because the. transported goods are not forced to change direction abruptly. Across from Centrifugal blowers also have no material deposits or even blockages from the material being conveyed.
Im -Gegensatz zu den Zentrifugalgebläsen verteilen sich die Festteile im Siloraum gleichmässiger, weil die Aus¬ tragung in allen Richtungen um 360° gestreut erfolgt. Eine Verwirbelungsvorrichtung ist somit überflüssig. Das Ventilatorrad wirkt somit bezüglich den Feststoffen gleich einem Schleuderteller.In contrast to the centrifugal blowers, the solid parts are distributed more evenly in the silo room because the discharge takes place in all directions by 360 °. A swirling device is therefore superfluous. The fan wheel thus acts like a centrifugal disc with regard to the solids.
Handelt es sich bei dem Fördergut um leichte Teilchen, so ist der. zusätzliche Einbau einer Verteilerglocke 18 ratsam, wie das in Figur 5 im Schnitt gezeigt ist. Eine solche Verteilerglocke 18 wird vorteilhaft mittels eines an ihrer oberen Oeffnung 19 angeschweissten Rohres 20 am Silo-Zwischenboden 10 montiert. Das Fördergebläse kann dann unabhängig von der Verteilerglocke 18 zu Revisionsarbeiten ausgebaut werden. Die Verteilerglocke 18 schirmt das Ventilatorrad 8 gegenüber dem Siloraum ab. Bei laufendem Ventilatorrad 8 wird das Fördergut an die Innenwand der Verteilerglocke 18 geschleudert. Durch die Rotation des Ventilatorrades 8 wird der geförderten-Luft gleichzeitig eine Zirkulationsströmung überlagert, sodass sich die Luft innerhalb der Glocke 18 spiralförmig nach
unten bewegt. Die geförderten Feststoffe werden dabei aktiv mit nach unten gerissen. Ohne Verteilerglocke 18 würde das Fördergut bloss radial nach aussen hin beschleunigt und nur durch die Schwerkraft nach unten fallen. Bei leichtem Fördergut wie Sägemehl oder ähnlichem würde die Staubdichte in der Nähe der Filter zu gross, sodass jene allzubald verstauben würden. Mit der Verteilerglocke 18 hingegen wird das Fördergut im Siloraum kräftig nach unten beschleunigt. Die nach unten geblasene Luft wird vor dem Füllniveau des Silos umgelenkt, wobei die mitgeführten Teile abgelagert werden. Die Luft steigt dann im äusseren Bereich des Siloinnern wieder auf und fliesst aussen um die Verteilerglocke 18 herum zu den Filtersäcken.
If the material being conveyed is light particles, it is. Additional installation of a distribution bell 18 advisable, as shown in section in Figure 5. Such a distributor bell 18 is advantageously mounted on the intermediate silo floor 10 by means of a tube 20 welded to its upper opening 19. The conveying fan can then be removed for inspection work independently of the distributor bell 18. The distributor bell 18 shields the fan wheel 8 from the silo room. With the fan wheel 8 running, the material to be conveyed is thrown against the inner wall of the distributor bell 18. Due to the rotation of the fan wheel 8, a circulating flow is simultaneously superimposed on the conveyed air, so that the air within the bell 18 spirals downward moved down. The extracted solids are actively dragged down. Without the distribution bell 18, the material to be conveyed would only be accelerated radially outwards and would only fall down due to gravity. In the case of light goods to be conveyed, such as sawdust or the like, the dust density near the filters would be too great, so that they would dust up too soon. With the distributor bell 18, however, the material to be conveyed in the silo room is accelerated downwards. The air blown down is redirected before the filling level of the silo, whereby the carried parts are deposited. The air then rises again in the outer area of the silo interior and flows outside around the distributor bell 18 to the filter bags.
Claims
1. Gebläse zur Umsetzung von Luft oder zur Beförderung von Schüttgut mit einem Ventilatorrad, einem Antriebs¬ motor und einem Ansaugrohr, dadurch gekennzeichnet, dass das Ansaugrohr (1) vor dem Ventilatorrad (8) in zwei getrennte Rohre (2) verzweigt ist, die zusammen eine Querschnitts läche aufweisen, die mindestens dem Querschnitt des Ansaugrohres (1) vor der Verzweigung entspricht, und dass die verzweigten Rohre (2) in die grössere Oeffnung eines gemeinsamen Konus (4) münden, wobei ausgangsseitig nach dem Konus (4) das Venti¬ latorrad (8) angeordnet ist, und dass die Antriebs¬ welle (5) des Ventilatorrades (8) in Axialrichtung gegen den Konus (4) hin nach aussen in den Bereich (7) zwischen den beiden verzweigten Rohren (2) geführt und vom ausserhalb der Rohre (1, 2, 3) befindlichen Antriebsmotor getrieben ist.1. Blower for converting air or for transporting bulk material with a fan wheel, a drive motor and an intake pipe, characterized in that the intake pipe (1) in front of the fan wheel (8) is branched into two separate pipes (2) together have a cross-sectional area which corresponds at least to the cross-section of the intake pipe (1) before the branching, and that the branched pipes (2) open into the larger opening of a common cone (4), the venti being on the output side after the cone (4) ¬ latorrad (8) is arranged, and that the drive shaft (5) of the fan wheel (8) in the axial direction against the cone (4) outwards into the area (7) between the two branched tubes (2) and from drive motor located outside the pipes (1, 2, 3).
2. Gebläse nach Anspruch 1, dadurch gekennzeichnet, dass der Antriebsmotor die Antriebswelle (5) mittels Zahnriemen über Zahnriemenräder antreibt.2. Blower according to claim 1, characterized in that the drive motor means the drive shaft (5) Drives toothed belt over toothed belt wheels.
3. Gebläse nach Anspruch 1, dadurch gekennzeichnet, dass der Antriebsmotor die Antriebswelle (5) mittels Keilriemen über Keilriemenräder (6) antreibt.3. Blower according to claim 1, characterized in that the drive motor drives the drive shaft (5) by means of V-belts via V-belt wheels (6).
4. Gebläse nach Anspruch 1, dadurch gekennzeichnet, dass das Ventilatorrad (8) an der vom Konus (4) abgelegenen Seite durch eine Scheibe (9) geschlossen ist, die als Schleuderscheibe wirkt, wobei der .Flansch (13) eine feststehende Ventilatorradwand darstellt.4. Blower according to claim 1, characterized in that the fan wheel (8) on the side remote from the cone (4) is closed by a disc (9) which acts as a centrifugal disc, the flange (13) representing a fixed fan wheel wall .
5. Gebläse nach Anspruch 1, dadurch gekennzeichnet, dass das Ventilatorrad (8) im Inneren einer Verteilerglocke (18) angeordnet ist, mittels deren Innenwand das radial aus dem Ventilatorrad (8) ausgeschleuderte Fördergut umlenkbar ist. 5. Blower according to claim 1, characterized in that the fan wheel (8) is arranged inside a distributor bell (18), by means of the inner wall of which the material to be conveyed radially ejected from the fan wheel (8) can be deflected.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH582/87A CH671753A5 (en) | 1987-02-17 | 1987-02-17 | |
| CH582/87 | 1987-02-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0303641A1 true EP0303641A1 (en) | 1989-02-22 |
| EP0303641B1 EP0303641B1 (en) | 1991-04-10 |
Family
ID=4190339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88901531A Expired - Lifetime EP0303641B1 (en) | 1987-02-17 | 1988-02-16 | Transport ventilator |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4883406A (en) |
| EP (1) | EP0303641B1 (en) |
| JP (1) | JPH03500560A (en) |
| CH (1) | CH671753A5 (en) |
| WO (1) | WO1988006240A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5379881A (en) * | 1994-04-22 | 1995-01-10 | Andritz Sprout-Bauer, Inc. | Stream splitting apparatus |
| US5452853A (en) * | 1994-05-04 | 1995-09-26 | Action Products Marketing Corporation | Method and apparatus for spraying grout onto the interior surface of an enclosed elongated cavity |
| US5782605A (en) * | 1996-07-19 | 1998-07-21 | Andritz Sprout-Bauer, Inc. | Impeller for separating a conveyed stream of material |
| BRPI0704378B1 (en) * | 2007-10-30 | 2014-10-29 | Otalicio Pacheco Da Cunha | INTEGRATED AIR CLEANER FOR STORAGE AND DRYER SILOS |
| GB0803674D0 (en) * | 2008-02-28 | 2008-04-09 | Hendrickson Thor | Ventilation system |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US139854A (en) * | 1873-06-17 | Improvement in means for creating artificial currents | ||
| US6086A (en) * | 1849-02-06 | Cooking-stove | ||
| US1566493A (en) * | 1925-12-22 | Alexander mckay | ||
| US2242278A (en) * | 1940-04-19 | 1941-05-20 | Jr Edward H Yonkers | Suction cleaner |
| US2513466A (en) * | 1947-04-07 | 1950-07-04 | Vernon W Fleming | Grain pickup machine |
| US2847156A (en) * | 1954-05-10 | 1958-08-12 | Stewart Ind Inc | Fan assembly |
| GB781348A (en) * | 1954-08-16 | 1957-08-21 | Heinrich Schloz | Improvements in blowers for pneumatic conveyor installations |
| FR1438867A (en) * | 1964-07-03 | 1966-05-13 | Alfa Laval Ab | Apparatus for distributing materials into storage containers, such as silos |
| US3312386A (en) * | 1964-12-21 | 1967-04-04 | Ametek Inc | Fan |
| SU676207A1 (en) * | 1977-01-24 | 1979-07-30 | Кировоградский институт сельскохозяйственного машиностроения | Seeder |
| AT356690B (en) * | 1977-07-06 | 1980-05-12 | Veitscher Magnesitwerke Ag | DEVICE FOR CONSTRUCTING AND REPAIRING THE FIREPROOF LINING OF INDUSTRIAL OVENS AND HEATING VESSELS |
| DE2736074A1 (en) * | 1977-08-10 | 1979-02-15 | Kraftwerk Union Ag | INTAKE SYSTEM FOR THE COMPRESSOR OF A GAS TURBINE |
| SU880305A1 (en) * | 1980-06-09 | 1981-11-15 | Научно-Исследовательский Конструкторско-Технологический Институт По Машинам Для Подготовки И Внесения В Почву Минеральных Удобрений | Working member of fluent materil distributor |
| IN166220B (en) * | 1984-12-07 | 1990-03-31 | Chevron Res | |
| US4795095A (en) * | 1986-09-08 | 1989-01-03 | Shepard Industries, Inc. | Rotary atomizer |
-
1987
- 1987-02-17 CH CH582/87A patent/CH671753A5/de not_active IP Right Cessation
-
1988
- 1988-02-16 WO PCT/CH1988/000037 patent/WO1988006240A1/en active IP Right Grant
- 1988-02-16 EP EP88901531A patent/EP0303641B1/en not_active Expired - Lifetime
- 1988-02-16 JP JP63501422A patent/JPH03500560A/en active Pending
- 1988-02-16 US US07/279,154 patent/US4883406A/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8806240A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CH671753A5 (en) | 1989-09-29 |
| WO1988006240A1 (en) | 1988-08-25 |
| EP0303641B1 (en) | 1991-04-10 |
| US4883406A (en) | 1989-11-28 |
| JPH03500560A (en) | 1991-02-07 |
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