WO1994007667A1 - Misch- und fördergerät - Google Patents
Misch- und fördergerät Download PDFInfo
- Publication number
- WO1994007667A1 WO1994007667A1 PCT/EP1993/002593 EP9302593W WO9407667A1 WO 1994007667 A1 WO1994007667 A1 WO 1994007667A1 EP 9302593 W EP9302593 W EP 9302593W WO 9407667 A1 WO9407667 A1 WO 9407667A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- line
- pressure
- air
- delivery line
- mixing vessel
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
- B28C5/1223—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers discontinuously operating mixing devices, e.g. with consecutive containers
- B28C5/123—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers discontinuously operating mixing devices, e.g. with consecutive containers with pressure or suction means for discharging
Definitions
- the invention relates to a device for mixing and conveying mortar, concrete and similar thick matter with a mixing vessel, a delivery line connected to the mixing bowl near the ground and a respective upper air line and lower air line which can be pressurized with compressed air via a compressor, the upper air ⁇ line in the air space of the upper boiler area and the sub-air line opens into the delivery line at a connection point near the boiler.
- the invention further relates to a method for conveying thick matter from the mixing vessel into the delivery line.
- a throttle designed as a valve is arranged for the purpose of correct distribution the compressed air can be adjusted by hand.
- the compressor designed as a screw compressor is switched on and off via a shut-off valve arranged in the suction line. Since the device is frequently operated by untrained personnel, the throttles arranged in the upper air line and in the lower air line are brought into a predetermined position and left in this position when the system is started up.
- the mixing tank filled with the material to be mixed and conveyed is closed pressure-tight and the compressor is opened by opening the shut-off valve in the Saugleitu ⁇ g turned on.
- the engine speed is increased at the same time.
- the delivery pressure of about 4 to 5 bar gradually builds up in the boiler, especially via the upper air line.
- this build-up of pressure is delayed by the fact that the compressed air supplied via the sub-air line can initially escape via the delivery line without conveying mixed material until material is pressed into the delivery line via the boiler pressure and the injection air supplied via the sub-air line is used for conveying plugs.
- One consequence of this is a not inconsiderable extension of the delivery process and thus increased boiler wear and fuel consumption.
- the compressed air supply is switched off again when a boiler filling is discharged and the conveyance is ended. As soon as the boiler pressure falls below 1 bar, the boiler can be relieved by opening a vent valve and opened for refilling.
- the agitator driven by the compressor motor continues to run when the compressed air supply is switched off and ensures rapid mixing of the material to be mixed and conveyed during the mixing phase.
- the invention is based on the object of a mixing and conveying device and a method to develop thick materials, with which the conveying process can be optimized in terms of energy consumption and operational safety.
- the solution according to the invention is based on the idea of controlling the compressed air supply to the lower air line and to the upper air line in such a way that the pressure build-up and the material transport in the delivery line are optimized during the entire delivery phase.
- a shut-off or, designed as an opener is connected in the sub-air line on the pilot side to the connection point of the delivery line or the air space of the upper boiler area, which responds when a predetermined control pressure is exceeded
- Directional control valve is arranged.
- the connection to the air space of the upper boiler area can be made via the overhead air line.
- a bypass line connected in parallel with the shut-off or directional valve in which a throttle element is arranged.
- Measured air passes from the compressor to the delivery line via the throttle element.
- the measuring air is preferably branched off on the delivery line side of the throttle element for pilot control of the opener, so that it is ensured that the opener is only turned on when material from the mixing vessel is pressed into the delivery line and the pressure in the sub-air line required for removal (Injection line) is constructed.
- the break contact is advantageously controlled when a control pressure of 1.5 to 2.5 bar is exceeded and is blocked when the pressure falls below 1.4 to 0.5 bar.
- a preferred or alternative embodiment of the invention provides that a shut-off or directional valve designed as a closer is arranged in the upper air line, which is connected on the pilot side to the lower air line or the air space of the upper boiler area and is responsive to a predetermined control pressure .
- a bypass line connected in parallel to the shut-off or directional valve is also expediently provided in the upper air line, in which a throttle element is arranged.
- the throttle element primarily has the task of keeping the boiler-side part of the upper air duct free of impurities or of blowing it off.
- the pressure tap for controlling the upper air valve tils is conveniently located on the compressor side of the throttle element and therefore communicates directly with the lower air line.
- the lowest response pressure of the closer in the upper air line is therefore advantageously chosen to be higher than the highest response pressure of the opener in the lower air line. It has proven to be particularly advantageous if the closer is blocked when a control pressure of 4 to 5 bar is exceeded and is controlled again when the pressure falls below 3.9 to 3 bar.
- FIG. 1 shows a circuit diagram of a first exemplary embodiment of a compressed air mixing and conveying device
- Fig. 2 is a circuit diagram of a second preferred embodiment of a compressed air mixing and conveying device.
- the mixing and conveying devices shown in the drawing in the form of circuit diagrams essentially consist of a mixing vessel 1 which can be pressurized with compressed air by a compressor 8, 11 and which has an agitator driven by a shaft 2.
- the compressor 8 and the agitator 2 are driven by a common motor 7, which can be designed as a diesel motor or as an electric motor.
- the agitator shaft 2 is driven via the output shaft 21 of the motor 7, a V-belt drive 22, a cardan shaft 23 and a reduction gear 6.
- the compressor 8 receives its air through a suction line 18 in which a shut-off valve 19 and an air filter 29 are arranged.
- oil is injected on the suction side, which enters the housing of the compressor 8 via an oil circuit (not shown in the drawing) from the oil separator 11 or from an oil cooler connected downstream.
- the oil-air mixture passes through a check valve 10 arranged in line 9 into oil separator 11, from whose filter cartridge 12 largely oil-free compressed air flows into pressure line 13.
- a sub-air line 14 branches off from the pressure line 13 and opens into the delivery line 24 communicating with the mixing vessel 1 near the bottom.
- An upper air line 15 branches off from the pressure line 13 and opens into the air space of the mixing vessel 1 in the upper region at point 25.
- a directional valve 26 in the form of a minimum pressure valve 26 in the lower air line 14, the control input of which communicates with the air space of the mixing boiler 1 via the upper air line and which controls when a predetermined minimum pressure in the mixing tank is reached .
- a throttle 16 is also arranged in the upper air line, which is set by hand for the purpose of correct air distribution when the device is adjusted and remains in this position.
- the check valves 27 ', 27'' ensure that no air and therefore no impurities 13 can get into the pressure lines 14, 15 from the mixing vessel 1.
- FIG. 1 In the exemplary embodiment shown in FIG.
- a spring-centered directional valve 26 designed as an opener is arranged in the lower air line, which can be acted upon on the pilot side by the pressure prevailing at the connection point of the delivery line 24 and that the compressed air supply to the delivery line 24 is exceeded when a predetermined one is exceeded Pressure switches on at the connection point and blocks when the pressure falls below a predetermined value.
- a bypass line 29 with a measuring throttle 28 ' is connected in parallel to the directional control valve 26.
- a spring-centered directional valve 30 designed as a closer the pilot control input of which is connected via the lower air line 14 to the injection point of the delivery line 24 and to which a bypass line with throttle element 28 ′′ is connected in parallel.
- the lid 4 and the vent valve 5 are closed and then the shut-off valve 19 is preferably opened by hand.
- the pressure thereupon initially rises slowly as a result of the pre-compression in the dead space and in the oil separator 11, which has the advantage that the agitator 2 is not overstressed or blocked by a sudden compression of the mixture and an associated stiffening of the consistency.
- the opener 26 in the lower air line 14 is initially closed, so that the pressure build-up in the mixing vessel 1 takes place only via the upper air line 15 and the open closer 30.
- the delivery line 24 As soon as a minimum pressure of about 1.5 to 2 bar is reached in the delivery line 24 is, it opens the opener 26 automatically in its open position so that there is now enough pressure available at the inlet of the feed line to discharge the mix. Due to the agitator 2, which is also moved during the conveying process, the material supply to the conveying line 24 is periodically interrupted, so that the mixed material is transported in a pulsed manner through the conveying line 24. If in the course of the conveying process the pressure at the pilot control valve of the closer 30 exceeds a value of 4.5 to 5 bar, the closer 30 is blocked and thus the supply of new conveyed material from the mixing bowl 1 into the conveying line 24 is reduced. In this state, the majority of the compressed air coming from the compressor (over 90%) reaches the delivery line 24 via the under-air line 14, so that clogging of the delivery line is largely avoided (FIG. 2).
- the compressor is switched off manually or automatically by closing the shut-off valve 19.
- the opener 26 then returns to its closed position.
- the vent valve 5 is opened either by hand or automatically, so that the remaining air still escapes quickly and the cover 4 can be opened for a new charge.
- the invention relates to a compressed air conveying device for thick matter, such as mortar or concrete.
- the compressed air conveyor comprises a mixing tank 1 having a motor-driven mixing unit 2, a delivery line 24 connected to the mixing tank 1 near the ground, and in each case one lower air line 14 and upper air line 15 which can be pressurized with compressed air via a compressor 8, 11, 12.
- the upper air line 15 opens into the upper one Boiler area, while the lower air line 14 opens into the delivery line 24 at an injection point.
- the injection air supplied via the under-air line 14 only at a predetermined minimum resistance in the delivery line is switched on, while the compressed air supply in the boiler 1 is blocked when a preset maximum resistance in the delivery line 24 is reached.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Accessories For Mixers (AREA)
- Air Transport Of Granular Materials (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950701269A KR950703438A (ko) | 1992-10-02 | 1993-09-24 | 혼합-운반장치(mixer-conveyor) |
EP93921847A EP0662875B1 (de) | 1992-10-02 | 1993-09-24 | Misch- und fördergerät |
SK426-95A SK279890B6 (sk) | 1992-10-02 | 1993-09-24 | Spôsob transportu malty, betónu a podobných hustýc |
DE59307832T DE59307832D1 (de) | 1992-10-02 | 1993-09-24 | Misch- und fördergerät |
AU51222/93A AU5122293A (en) | 1992-10-02 | 1993-09-24 | Mixer-conveyor |
PL93308210A PL172465B1 (pl) | 1992-10-02 | 1993-09-24 | Urzadzenie mieszajaco-podajace PL PL PL PL PL |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4233160.9 | 1992-10-02 | ||
DE4233160 | 1992-10-02 | ||
DE4301474A DE4301474A1 (de) | 1992-10-02 | 1993-01-21 | Misch- und Fördergerät |
DEP4301474.7 | 1993-01-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994007667A1 true WO1994007667A1 (de) | 1994-04-14 |
Family
ID=25919119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1993/002593 WO1994007667A1 (de) | 1992-10-02 | 1993-09-24 | Misch- und fördergerät |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0662875B1 (de) |
AT (1) | ATE160967T1 (de) |
AU (1) | AU5122293A (de) |
CZ (1) | CZ287601B6 (de) |
ES (1) | ES2111182T3 (de) |
PL (1) | PL172465B1 (de) |
SK (1) | SK279890B6 (de) |
WO (1) | WO1994007667A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110201580A (zh) * | 2019-06-27 | 2019-09-06 | 佛山市南海东方澳龙制药有限公司 | 膏剂的混合配制设备及方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103878881B (zh) * | 2014-03-05 | 2016-04-13 | 盘锦兴海宏大发光科技有限公司 | 双发泡泡沫混凝土设备 |
CN111941638B (zh) * | 2020-09-10 | 2021-09-07 | 广东洁冠科技有限公司 | 一种冶炼废弃物制砖方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB831658A (en) * | 1956-01-12 | 1960-03-30 | Max Marion True | Mobile mixers of the type carrying spray or other delivery means for concrete or the like |
DE2946813A1 (de) * | 1979-11-20 | 1981-05-21 | Karl Dipl.-Ing. 7000 Stuttgart Schlecht | Misch- und foerdergeraet |
EP0037555A2 (de) * | 1980-04-05 | 1981-10-14 | SCHLECHT, Karl | Misch- und Fördergerät |
EP0367912A1 (de) * | 1988-10-29 | 1990-05-16 | Putzmeister-Werk Maschinenfabrik Gmbh | Misch- und Druckluftfördergerät |
-
1993
- 1993-09-24 AU AU51222/93A patent/AU5122293A/en not_active Abandoned
- 1993-09-24 SK SK426-95A patent/SK279890B6/sk unknown
- 1993-09-24 EP EP93921847A patent/EP0662875B1/de not_active Expired - Lifetime
- 1993-09-24 PL PL93308210A patent/PL172465B1/pl not_active IP Right Cessation
- 1993-09-24 AT AT93921847T patent/ATE160967T1/de not_active IP Right Cessation
- 1993-09-24 WO PCT/EP1993/002593 patent/WO1994007667A1/de active IP Right Grant
- 1993-09-24 ES ES93921847T patent/ES2111182T3/es not_active Expired - Lifetime
- 1993-09-24 CZ CZ1995724A patent/CZ287601B6/cs not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB831658A (en) * | 1956-01-12 | 1960-03-30 | Max Marion True | Mobile mixers of the type carrying spray or other delivery means for concrete or the like |
DE2946813A1 (de) * | 1979-11-20 | 1981-05-21 | Karl Dipl.-Ing. 7000 Stuttgart Schlecht | Misch- und foerdergeraet |
EP0037555A2 (de) * | 1980-04-05 | 1981-10-14 | SCHLECHT, Karl | Misch- und Fördergerät |
EP0367912A1 (de) * | 1988-10-29 | 1990-05-16 | Putzmeister-Werk Maschinenfabrik Gmbh | Misch- und Druckluftfördergerät |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110201580A (zh) * | 2019-06-27 | 2019-09-06 | 佛山市南海东方澳龙制药有限公司 | 膏剂的混合配制设备及方法 |
Also Published As
Publication number | Publication date |
---|---|
ES2111182T3 (es) | 1998-03-01 |
EP0662875B1 (de) | 1997-12-10 |
SK42695A3 (en) | 1995-08-09 |
SK279890B6 (sk) | 1999-05-07 |
CZ72495A3 (en) | 1995-09-13 |
EP0662875A1 (de) | 1995-07-19 |
PL172465B1 (pl) | 1997-09-30 |
ATE160967T1 (de) | 1997-12-15 |
PL308210A1 (en) | 1995-07-24 |
CZ287601B6 (en) | 2001-01-17 |
AU5122293A (en) | 1994-04-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2625591B2 (de) | Pneumatisch arbeitende Schüttgutförderanlage | |
DE2650107A1 (de) | Verfahren und vorrichtung zum abscheiden von luft oder gas aus einer unter ueberdruck durch rohrleitungen stroemenden fluessigkeit | |
DE3131002A1 (de) | Automatische druckstrahlanlage mit genauer und reproduzierbarer dosierung des strahlmittels und kontinuierlichem betrieb | |
WO1994007667A1 (de) | Misch- und fördergerät | |
EP0367912B1 (de) | Misch- und Druckluftfördergerät | |
EP0874769B1 (de) | Container für fliess- oder rieselfähige materialien, insbesondere für putze, mörtel oder dergleichen | |
DE4301474A1 (de) | Misch- und Fördergerät | |
EP0037555B1 (de) | Misch- und Fördergerät | |
EP0986520B1 (de) | Silo für schlämme | |
AT385683B (de) | Vorrichtung zum aufbringen eines isolierenden ueberzuges | |
DE4403875C2 (de) | Druckförderer zum Fördern von Sand, insbesondere von Gießereisand | |
DE2056145B2 (de) | Betonspritzmaschine | |
EP0294496A1 (de) | Einrichtung zur Bereitung von Mörtel und Estrich | |
DE886126C (de) | Vorrichtung fuer den pneumatischen Transport von pulverisiertem oder koernigem Gut | |
CH657408A5 (en) | Plaster-spraying machine, in particular for textured plasters | |
AT214842B (de) | Vorrichtung zum Fördern pulverförmigen Gutes | |
WO1995005985A1 (de) | System zur handhabung von schüttgütern | |
DE29509569U1 (de) | Vorrichtung zur pneumatischen Förderung von trockenem Fördergut | |
DE2612385C2 (de) | Vorrichtung zum Entwässern von Schlamm | |
DE4212942C2 (de) | Einrichtung zum Entleeren und Umfüllen des Inhalts von Baustoffcontainern | |
DE2938626C2 (de) | Schüttgutaufnahmevorrichtung für einen pneumatischen Druckförderer | |
EP0707931A2 (de) | Vorrichtung zur pneumatischen Förderung von trockenem Fördergut | |
CH655862A5 (de) | Verfahren zur beschleunigung des luftaustausches beim befuellen oder entleeren eines druckraumes und vorrichtung zur durchfuehrung desselben. | |
DE2418430A1 (de) | Betonwaschanlage | |
DE1904634C3 (de) | Vorrichtung zum Mischen und Ausgeben organischer oder anorganischer plastischer Stoffe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AT AU BB BG BR BY CA CH CZ DK ES FI GB HU JP KP KR KZ LK LU LV MG MN MW NL NO NZ PL PT RO RU SD SE SK UA US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1993921847 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: PV1995-724 Country of ref document: CZ |
|
WWE | Wipo information: entry into national phase |
Ref document number: 42695 Country of ref document: SK |
|
WWP | Wipo information: published in national office |
Ref document number: 1993921847 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: PV1995-724 Country of ref document: CZ |
|
NENP | Non-entry into the national phase |
Ref country code: CA |
|
WWG | Wipo information: grant in national office |
Ref document number: 1993921847 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: PV1995-724 Country of ref document: CZ |