EP0200026A2 - Pompe - Google Patents
Pompe Download PDFInfo
- Publication number
- EP0200026A2 EP0200026A2 EP86104612A EP86104612A EP0200026A2 EP 0200026 A2 EP0200026 A2 EP 0200026A2 EP 86104612 A EP86104612 A EP 86104612A EP 86104612 A EP86104612 A EP 86104612A EP 0200026 A2 EP0200026 A2 EP 0200026A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- hose
- support
- support elements
- conveyor
- delivery
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
- F04B43/1223—Machines, pumps, or pumping installations having flexible working members having peristaltic action the actuating elements, e.g. rollers, moving in a straight line during squeezing
Definitions
- the invention relates to a pump for conveying in particular viscous media, such as cement mixtures, with a conveyor hose and along this movable and pressing the hose against a press wall pressing rollers, with the hose bringing its original shape to support elements and the delivery hose on the press wall in its predetermined position holding centering device.
- viscous media such as cement mixtures
- rollers are used to bring the conveying hose, which was compressed with the squeeze rollers shortly before, into its original shape.
- the rotors of such pumps rotate at a speed of 60 rpm and furthermore that the delivery hoses used in such pumps are very slow or slow in their movement
- the through the squeeze rollers depressed hose is not laterally grasped by the rollers that follow at a short distance behind them, but rather that it is rather damaged by the rollers, in particular torn open laterally. This happens in particular because the tube is very sluggish after being squeezed due to the vacuum in it and straightens up very slowly.
- the hose for renewing it is very difficult to access.
- the object of the invention is to provide a pump of the type described in the introduction, which avoids the disadvantages mentioned and, with the most gentle handling of the delivery hose, can achieve a satisfactory delivery rate.
- This object is achieved in that as a centering device on both sides of the delivery hose, radial pressure is exerted on this, arranged on the pump housing resilient support elements which can be pushed back by the flattened hose when the press roll passes.
- Such a design of the support members makes it possible to design the support elements that can be tailored precisely to the delivery hose, regardless of the rotor speed. This has the advantageous result that the delivery hose is reliably erected into its cylindrical shape in a gentle manner. The uprighting force of the support elements is formed by pushing them back when the delivery hose is pressed flat by the press roller.
- a preferred embodiment of the invention consists in that the support elements are arranged so as to be pivotable about an axis parallel to the longitudinal axis of the hose.
- the support elements arranged laterally with respect to the squeezing direction can take part in the change in height of the hose means from the uncrushed to the crimped state without hindrance, so that the hose elements are optimally centered in both states by the support elements.
- the support elements are fastened on one long side to a cover plate which is detachably connected to the pump housing.
- a preferred embodiment of the invention is characterized by claim 4.
- This precise adjustment which moves with the speed of the press roll, has the result that pressure is exerted on the entire pinched edge of the delivery hose in order to re-erect it.
- a preferred embodiment of the invention is also described by claim 5. With such a curvature of the support surfaces, a more precise adaptation to the squeeze profile of the conveyor hose is possible while avoiding a sharp-edged contact with the conveyor hose. It is also of particular advantage that tilting and thus increased friction of the prestressed support elements with one another can be excluded by the support of the support elements which can be achieved with the curvature.
- Another preferred embodiment of the invention is characterized by claim 6.
- Such a ring-shaped design of the support elements enables easier displacement with a substantial saving in weight.
- the friction between the support elements, which only adjoin one another along their cross-sectional area, can thus be reduced.
- Another embodiment of the invention is characterized by claim 7.
- an exact limitation of the sliding path of the support elements and an associated exact centering of the delivery hose on the support plate can be achieved.
- the support elements can thus also be held in their foremost position under pretension, which can be precisely adjusted and changed in accordance with the various working parameters, in particular depending on the type of material being transported. This ensures that the delivery hose is brought exactly into its original cylindrical shape and is also held in it.
- This design for pretensioning the support elements is structurally particularly simple and, above all, enables an exact transfer of the squeeze profile from the conveying hose to the pneumatic hose. This automatically creates the already mentioned pressure drop from the most displaced to the less displaced support element. With such a pressure gradient, a gentle and rapid erection of the conveying hose in the squeezing direction of the squeezing rollers is largely free of flexing work. With the possibility of changing the pressure in the pneumatic hose, the re-erection of the delivery hose can advantageously be carried out independently of the speed of the pinch roller.
- a further advantageous embodiment of the invention is also characterized by claim 9. With such a length / width ratio of the support elements, extensive adaptation to the squeeze profile is possible, but there is still sufficient contact or. Avoid contact area between the individual support blocks. of canting which increases the friction and complicates the sliding movements.
- a preferred embodiment of the invention is characterized by claim 10. With this one-sided articulation of the conveyor chain and the press rollers attached to it, the conveyor hose for inspection or cleaning is particularly quickly accessible by actuating the height adjustment device accordingly. On the other hand, it is also possible to change the distance between the support bench and the press rolls, which distance depends on the material being conveyed, quickly and easily.
- the support members are specially designed. Support members designed in this way are structurally particularly simple and therefore also inexpensive, and the comb-like design and end-to-end mounting on hoses optimally adapt to the bead formation of the conveying hose which moves with the press rolls, with both a reduction in distance between edge beads and support members and, at the same time, a reduction in the height of the edge beads is achievable.
- the comb sections of the comb plate pressed into the elastic hose in this area result in a radially acting uprighting force acting on the conveying hose and restoring it to its original cylindrical shape. At the same time, material is sucked in from the end of the feed hose on the input side.
- a pump 1 shown in FIGS. 1, 4 and 5 consists of a pump housing 2, a mater i altrog 2 with an agitator 3 and a rectilinearly arranged delivery hose 4. This rests on a level support bench 5, which is above two strips 6 on the pump housing 2 is supported. A pad rubber 7 is provided on the top of the support bench to dampen the squeezing movements. Above the conveyor hose 4, an endless conveyor chain 9, which is guided around deflection rollers 8, is arranged. This is connected to three press rolls 10 which are arranged at the same distance from one another and have supporting disks 11 on both sides. These can be unrolled on runners 12 which, like the two deflecting rollers 8, are connected to a supporting beam 13.
- This is pivotally mounted about an axis 14 on the pump housing 2 and is connected to a height adjustment device 15 in the region of the opposite end.
- the deflection roller 8 or the conveyor chain 9 is driven by a hydraulic motor 16.
- the direction of rotation is indicated by an arrow 17.
- the conveying hose 4 has triangular support strips 18 on diametrically opposite and between the support bench 5 and the press rolls 10, which are formed from rubber and vulcanized.
- hoses 21 are provided on both sides of the pump housing 2 in semicircular half-shells 20 and are filled with compressed air, on which comb plates 22 made of rubber are vulcanized. In the region of the end adjacent to the support strip 18, these have a notch 23 of opposite design and a plurality of cuts 24 arranged parallel to one another and perpendicular to the longitudinal extension of the hose.
- the conveyor hose 4 is squeezed together to form an edge bead 25 projecting laterally beyond the support bench 5, then the resulting increase in the width of the hose means that in this area the Support bar 18 adjacent comb parts 26 of the comb plate 22 pressed against the hoses 21 filled with compressed air and thereby store the force required for the straightening up. If the squeezing pressure decreases as the squeezing roller 10 moves further in the direction shown by the arrow 17, the stored force automatically causes the comb parts pressed into the hoses 21 to press against the edge beads 25 and consequently to a straightening up of the squeezed conveyor hose 4 in its original cylindrical shape.
- the conveyed material located in the material trough 2 is sucked in at the same time, e.g. Mortar or the like. Since all parts of the support members 19 are made of rubber, there is no risk of breakage and, in addition, damage to the delivery hose 4 is reliably excluded.
- the delivery hose 30 rests on a support bench 31, which in turn is arranged on a base plate of a pump housing 32.
- Hose clamps 33 arranged at the end serve for fastening to the pump housing 32 and also hold the inserted steel sleeves 34 for the further transport of the viscous material being conveyed.
- a plurality of support elements 35 arranged next to one another are provided on both longitudinal sides of the conveying hose 30. These support elements 35, which have two sliding surfaces 36 running parallel to one another are clamped between a base plate 37 and a cover plate 38 for displacement in the direction of the axis 39 of a press roll 40.
- the two sliding surfaces 36 of each support element 35 are connected to one another by a bulging support surface 41 or pressure surface 42.
- Each support element 35 has a recess 43 with a vertical stop 44 in its lower end region of the support surface 41.
- the height of this stop 44 corresponds at least to the height of the support bench 31, the size of the recess 43 being designed in such a way that the conveying hose 30 is held in its cylindrical shape in the foremost end position of the support elements 35 (see FIG. 7) and in contact with it the support surfaces 41 is given.
- a pneumatic hose 46 is arranged between each side wall 45 of the pump housing 32 and the pressure surface 42 of each support element 35.
- These pneumatic hoses 46 can be pressurized with compressed air via a valve 47 and connected to one another by a tube 48.
- the support elements 35 are prestressed by the compressed air in the pneumatic hoses 46 by abutment of the stop 47 against the support bench 31, without the delivery hose 30 being pressed in the process. This ensures that the conveying hose 30 comes to rest centrally on the support bench 31 and is also held in its cylindrical shape against the effects of fatigue.
- the delivery hose 30, which is filled with a viscous medium, e.g. Concrete is filled, pressed together by the pressing roller 40 (see FIG.
- this area of the squeeze profile 49 automatically displaces the adjacent support elements 35, which in turn deform the pneumatic hose 46 with their pressure surface 42.
- the conveyor hose 30 is arranged lying in one plane. According to the invention, however, the conveying hose 30 can also be arranged in an arc and squeezed by a press roll arranged on a rotor. With such an arch formation of the conveying hose, however, the support elements 35 must be conically shaped in accordance with the curvature of the arch.
- the pump 60 shown in FIG. 11 consists of a pump housing or frame box 61, in which a rotor 63 is rotatably mounted in the center about a horizontal shaft 62. This is composed of two mutually parallel support arms 64, between each of which a press roller 65 is arranged at the ends. These are rotatably mounted about an axis 66 coaxial to the axis of the shaft 62.
- the shaft 62 of the rotor 63 which is mounted in a bearing housing 68 arranged on the rear wall of the frame box 61, is set into a rotational movement by means of a gear and hydraulic motor, not shown.
- a delivery hose 69 is arranged around the rotor 63 with an end on the suction side and one end on the delivery side. While the suction-side end of the delivery hose 69 is connected to a trough having an agitator, the delivery-side end connects to a pipeline.
- the conveyor hose 69 lies with its area on the outside of the curve on a semicircular press wall 70 made of rubber, which is glued to a support bench 71 connected to the frame box 61.
- the distance between the outer edge of the press roll and the press wall 70 corresponds to twice the wall thickness of the conveying hose 69.
- Both the width of the press wall 70 and the width of the press rolls 65 are twice that when the conveying hose 69 is pressed together resulting crush edge 72 smaller than the length of the to. compressed hose 69, d.i. at least twice its wall thickness.
- centering devices designed as support elements 73 are also provided on both sides of the conveying hose 69 at equal distances from one another and are fastened on the rear wall or on a cover plate 74. This is detachably connected to the pump housing 61 via screw connections 75.
- the support or. Centering elements 73 are pivotally mounted on the pump housing 61 about an axis 76 parallel to the longitudinal direction of the hose and are connected at their hose-side end to the curvature of the delivery hose 69 corresponding circular arc segments 77.
- the circular arc segments 77 of the support and centering elements 73 are connected via two steel springs 78 to a link body 79 which is pivotably articulated on the frame box via the axis 76.
- a clip 80 connected to the articulation body 79 is provided in the center and bends the two steel springs 78 away from one another.
- the length of the support or. the centering elements 73 are selected so that, in the relaxed state, the circular arc segments 77 just abut the cylindrical conveyor hose 69 and center them precisely on a central position with respect to the press wall 70 and the press rollers 65.
- the rotor 63 As soon as the trough with e.g. liquid concrete is filled, the rotor 63 is rotated.
- the press rollers 65 hit the conveyor hose 69 and press it against the press wall 70 (upper part of FIG. 11) while the concrete is continuously conveyed from the suction end to the discharge end.
- the pressure energy stored by the steel springs 78 causes a force to be exerted on the pinch edges 72, as a result of which they are moved towards one another and the hose 69 regains its original cylindrical shape. This creates a vacuum in the end area on the suction side, which in turn causes the concrete in the trough to be sucked in.
- a particular advantage of the embodiment according to the invention is the easy accessibility to the delivery hose 69, which can be achieved by a few hand movements, for thorough checking or rapid interchangeability. For this purpose, only a loosening of the screw connection 75 is required, and with the removal of the cover plate 74 the numerous support and centering elements 73 attached to it are also removed at the same time. In order to be able to replace the conveying hose 69, a displacement of the one press roller 65 in the radial direction by actuating a transfer device is also necessary.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT116085A AT381990B (de) | 1985-04-17 | 1985-04-17 | Pumpe zur foerderung von zaehfluessigen medien |
AT1160/85 | 1985-04-17 | ||
AT2312/85 | 1985-08-07 | ||
AT231285 | 1985-08-07 | ||
AT32486 | 1986-02-10 | ||
AT324/86 | 1986-02-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0200026A2 true EP0200026A2 (fr) | 1986-11-05 |
EP0200026A3 EP0200026A3 (fr) | 1987-03-04 |
Family
ID=27146156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86104612A Withdrawn EP0200026A3 (fr) | 1985-04-17 | 1986-04-04 | Pompe |
Country Status (2)
Country | Link |
---|---|
US (1) | US4735557A (fr) |
EP (1) | EP0200026A3 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0378437A2 (fr) * | 1989-01-13 | 1990-07-18 | Con-Tech Services Limited | Méthode pour appliquer un mortier sur une surface |
US5380172A (en) * | 1993-12-29 | 1995-01-10 | Ulbing; Otmar | Peristaltic action precision pump filler |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2238083A (en) * | 1989-11-02 | 1991-05-22 | Danby Medical Ltd | Peristaltic pump |
US6234773B1 (en) | 1994-12-06 | 2001-05-22 | B-Braun Medical, Inc. | Linear peristaltic pump with reshaping fingers interdigitated with pumping elements |
US5660529A (en) * | 1994-12-06 | 1997-08-26 | Mcgaw, Inc. | Linear peristaltic pump with reshaping fingers interdigitated with pumping elements |
US8308278B2 (en) | 2010-04-02 | 2012-11-13 | Xerox Corporation | System and method for operating a conduit to transport fluid through the conduit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3712762A (en) * | 1971-03-19 | 1973-01-23 | Hansmann A | Concrete pump |
FR2537220A1 (fr) * | 1982-06-03 | 1984-06-08 | Sermem Sa | Pompe peristaltique |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2899905A (en) * | 1959-08-18 | becher | ||
US2002862A (en) * | 1935-05-28 | Rotary pump | ||
US2466618A (en) * | 1945-09-18 | 1949-04-05 | Stocks Ronald Kingsley | Pump suitable for moving sludges and the like |
US2898864A (en) * | 1956-12-27 | 1959-08-11 | Nicotron Developments Ltd | Rotary pumps |
US3431864A (en) * | 1966-12-22 | 1969-03-11 | Charles B Jones Jr | Peristaltic pump |
-
1986
- 1986-04-04 EP EP86104612A patent/EP0200026A3/fr not_active Withdrawn
- 1986-04-10 US US06/850,277 patent/US4735557A/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3712762A (en) * | 1971-03-19 | 1973-01-23 | Hansmann A | Concrete pump |
FR2537220A1 (fr) * | 1982-06-03 | 1984-06-08 | Sermem Sa | Pompe peristaltique |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0378437A2 (fr) * | 1989-01-13 | 1990-07-18 | Con-Tech Services Limited | Méthode pour appliquer un mortier sur une surface |
EP0378437A3 (fr) * | 1989-01-13 | 1991-01-16 | Con-Tech Services Limited | Méthode pour appliquer un mortier sur une surface |
US5380172A (en) * | 1993-12-29 | 1995-01-10 | Ulbing; Otmar | Peristaltic action precision pump filler |
Also Published As
Publication number | Publication date |
---|---|
US4735557A (en) | 1988-04-05 |
EP0200026A3 (fr) | 1987-03-04 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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RHK1 | Main classification (correction) |
Ipc: F04B 43/12 |
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17P | Request for examination filed |
Effective date: 19870520 |
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17Q | First examination report despatched |
Effective date: 19880816 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19900117 |