WO1995024966A1 - Combined pressure milling pump - Google Patents

Combined pressure milling pump Download PDF

Info

Publication number
WO1995024966A1
WO1995024966A1 PCT/CZ1995/000003 CZ9500003W WO9524966A1 WO 1995024966 A1 WO1995024966 A1 WO 1995024966A1 CZ 9500003 W CZ9500003 W CZ 9500003W WO 9524966 A1 WO9524966 A1 WO 9524966A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
rotor
mill
area
passage holes
Prior art date
Application number
PCT/CZ1995/000003
Other languages
French (fr)
Inventor
Jan S^¿IML
Jaroslav PODUS^¿KA
Václav PILOUS
Petr Andrysek
Original Assignee
Vodní Stavby Praha
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vodní Stavby Praha filed Critical Vodní Stavby Praha
Priority to SK1505-95A priority Critical patent/SK150595A3/en
Priority to PL95311559A priority patent/PL311559A1/en
Priority to EP95911189A priority patent/EP0697915A1/en
Publication of WO1995024966A1 publication Critical patent/WO1995024966A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
    • B02C18/0092—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage for waste water or for garbage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
    • F04D7/045—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous with means for comminuting, mixing stirring or otherwise treating

Definitions

  • the invention concerns the combined pressure milling pump which consists of a pump and a mill.
  • the above mentioned disadvantages are suppressed with the combined pressure milling pump according to the invention, said milling pump being composed of a pump and a mill which are situated in a housing.
  • the mill consists of at least one stator and at least two rotors, said stator and said rotor being fitted with passage holes and said rotor being mounted on the shaft passing through the entire arrangement.
  • Substance of the invention is rooted therein that the longitudinal axes of the retarding stator holes of the mill are inclined in a negative angle of 0 minutes up to 75 degrees with respect to the shaft and the longitudinal axes of the accelerating rotor holes of the mill are inclined in a positive angle of 0 minutes up to 75 degrees with respect to the shaft.
  • the area of the stator retarding hole and, subsequently in the discontinuous streaming direction, the area of the accelerating rotor hole or the area of the rotor accelerating hole and, subsequently in the discontinuous streaming direction, the area of retarding stator hole always decreases in accordance with the ratio 1 - 2.
  • the sum of hole areas increases from 0 up to 100 percent in the discontinuous streaming direction and the distances between stator and rotor always change in the decreasing ratio one to one tenth.
  • the solution according to the invention results in an arrangement which provides a necessary as well as steady pressure.
  • the device does not get filled with air but disperges and mills the particles in the liquid in order to reach the demanded size.
  • the arrangement operates in such a way that the polluted liquid enters the pump where its passage is accelerated with simultaneous pressure increasing.
  • the liquid passes through individual stators as well as through rotors of the mill.
  • it is retarded and accelerated during simultaneous milling which is performed by means of the movement of rotors with regard to stator.
  • the particle size is determined by means of the distance between stator and rotor.
  • the final particle size is determined by the distance between the last rotor and the last stator.
  • the liquid with the particles of final and demanded size is driven out on one hand by means of a pump pressure and on the other hand by means of increasing pressure of the proper mill through the output opening out of the arrangement.
  • the pumping part generates a steady pressure of the conveyed liquid which lies within the interval 0.1 up to 0.3 MPa.
  • the device according to the invention is simple and cheaper than hitherto used pump types.
  • Fig.1 the layout according to the invention is explained in more detail by means of drawings where the stator and rotor of the mill are illustrated with holes and discontinuous streaming direction is indicated.
  • Fig.2 the layout of the pump and the mill inside the device is illustrated and the discontinuous streaming direction is indicated.
  • the combined pressure mill pump has been fabricated which included the pump 4 and the mill in one unit. Both of them are situated in the housing 7.
  • the mill consists of one stator 2 and two rotors 3. These are located on the shaft 8 which passes through the entire arrangement. Both stator 2 and rotor 3 are fitted with passage holes 1 , 6.
  • the longitudinal axes of the retarding holes 1 of the mill stator 2 are inclined in a negative angle of 10 minutes with respect to the shaft 8.
  • the longitudinal axes of the accelerating holes 6 of the rotor 3 of the mill are inclined in a positive angle of 10 minutes with respect to the shaft 8 as can be seen in Fig.1.
  • the sum of areas of the retarding holes 1 of the first stator 2 equalled 1 000 mm 2
  • the sum of areas of the acceleratingholes 6 of the rotor 3 equalled 1 100 mm 2
  • the sum of areas of the retarding holes 1, in the discontinuous streaming direction of the liquid, of the second stator 2 equalled 1 200 mm 2 .
  • the distance 5 between the first rotor 3 and the stator 2 equalled 1 mm and the distance 5 between the stator 2 and the second rotor 3 equalled 0.1 mm.
  • the arrangement operates in such a way that a liquid contaminated with oil and with functional medium is retarded in the arrangement part with stators 2, further it is milled in the gap between the rotor 3 and the stator 2, and finally it is accelerated again in the rotors 3. In this way the milling of course bentonite and its dispersion in water, contaminated with oil, was accomplished.

Abstract

Combined pressure milling pump consists of the pump (4) and the mill. The mill consists of at least one stator (2) and at least two rotors (3), both said stator (2) and said rotor (3) being fitted with passage holes (1, 6) and said rotor (3) being mounted on the shaft (8), which passes through the entire arrangement. The longitudinal axes of said retarding passages holes (1) of said stator (2) of the mill are inclined in a negative angle of 0 minutes up to 75 degrees with respect to said shaft (8), and the longitudinal axes of said accelerating passage holes (6) of said rotor (3) are inclined in a positive angle of 0 minutes up to 75 degrees with respect to said shaft (8). The area of said retarding passage hole (1) of said stator (2) and, subsequently in the discontinuous streaming direction, the area of said accelerating passage hole (6) of said rotor (3) or the area of said accelerating passage hole (6) of said rotor (3) and, subsequently in the discontinuous streaming direction, the area of said retarding passage hole (1) of said stator (2) always decrease in accordance with the ratio 1:2. In the discontinuous streaming direction, the sum of areas of passage holes (1, 6) increases from 0 to 100 percent and the distances (5) between said stator (2) and said rotor (3) always change in the decreasing ratio one to one tenth.

Description

Combined pressure milling pump
The invention concerns the combined pressure milling pump which consists of a pump and a mill.
Hitherto known milling pumps are composed of a milling part only and therefore they do not make sure any continuous suction of the medium to be milled. They operate on brought in solution the overpressure of which is approximately 0.2 MPa. If this is not the case, they get filled with air and make difficult a continous operation of the milling pump. Foregoing disadvantages occur with pumps which make use of the segmental principle or of the endless screw principle, or with other similar pumps.
Filling with air aggravates the milling pump operation and therefore a pressure pump is needed to provide a steady supply of liquid with mixture at a pressure of 0.2 MPa. A combination of a pump with a milling device is fastidious from the economical point of view.
Due to positive inclination of holes of stator and rotor holes or segments only, the hitherto known milling pumps do not provide any perfect dispersion of milled particles.
As by the way of another imperfection, they do not have exactly defined distance ratios between stators and rotors and therefore they do not provide the accurate milled particles size. Equally because of their not exactly defined ratios of passage hole areas of stators and rotors, they do not make provide perfect hydraulic flow passage of the medium to be milled.
To a considerable extent, the above mentioned disadvantages are suppressed with the combined pressure milling pump according to the invention, said milling pump being composed of a pump and a mill which are situated in a housing. The mill consists of at least one stator and at least two rotors, said stator and said rotor being fitted with passage holes and said rotor being mounted on the shaft passing through the entire arrangement. Substance of the invention is rooted therein that the longitudinal axes of the retarding stator holes of the mill are inclined in a negative angle of 0 minutes up to 75 degrees with respect to the shaft and the longitudinal axes of the accelerating rotor holes of the mill are inclined in a positive angle of 0 minutes up to 75 degrees with respect to the shaft. The area of the stator retarding hole and, subsequently in the discontinuous streaming direction, the area of the accelerating rotor hole or the area of the rotor accelerating hole and, subsequently in the discontinuous streaming direction, the area of retarding stator hole always decreases in accordance with the ratio 1 - 2. At the same time, the sum of hole areas increases from 0 up to 100 percent in the discontinuous streaming direction and the distances between stator and rotor always change in the decreasing ratio one to one tenth.
Advantageously, the solution according to the invention results in an arrangement which provides a necessary as well as steady pressure. The device does not get filled with air but disperges and mills the particles in the liquid in order to reach the demanded size.
The arrangement operates in such a way that the polluted liquid enters the pump where its passage is accelerated with simultaneous pressure increasing. In this state the liquid passes through individual stators as well as through rotors of the mill. Here it is retarded and accelerated during simultaneous milling which is performed by means of the movement of rotors with regard to stator. In the liquid the particle size is determined by means of the distance between stator and rotor. In the liguid the final particle size is determined by the distance between the last rotor and the last stator. The liquid with the particles of final and demanded size is driven out on one hand by means of a pump pressure and on the other hand by means of increasing pressure of the proper mill through the output opening out of the arrangement. The pumping part generates a steady pressure of the conveyed liquid which lies within the interval 0.1 up to 0.3 MPa.
The device according to the invention is simple and cheaper than hitherto used pump types.
In Fig.1 the layout according to the invention is explained in more detail by means of drawings where the stator and rotor of the mill are illustrated with holes and discontinuous streaming direction is indicated. In Fig.2 the layout of the pump and the mill inside the device is illustrated and the discontinuous streaming direction is indicated.
EXAMPLE
According to the invention, the combined pressure mill pump has been fabricated which included the pump 4 and the mill in one unit. Both of them are situated in the housing 7. The mill consists of one stator 2 and two rotors 3. These are located on the shaft 8 which passes through the entire arrangement. Both stator 2 and rotor 3 are fitted with passage holes 1 , 6. The longitudinal axes of the retarding holes 1 of the mill stator 2 are inclined in a negative angle of 10 minutes with respect to the shaft 8. The longitudinal axes of the accelerating holes 6 of the rotor 3 of the mill are inclined in a positive angle of 10 minutes with respect to the shaft 8 as can be seen in Fig.1. Each area of the retarding hole 1 of the mill stator 2, the first one in the discontinuous streaming direction of the liquid, equalled 100 mm2, and the area of each accelerating hole 6 of the mill rotor 3 equalled 50 mm2, and finally the area of each retarding hole 1, in the discontinuous streaming direction of the liquid, equalled 25 mm3 in the second stator 2.
The sum of areas of the retarding holes 1 of the first stator 2 equalled 1 000 mm2, the sum of areas of the acceleratingholes 6 of the rotor 3 equalled 1 100 mm2, and the sum of areas of the retarding holes 1, in the discontinuous streaming direction of the liquid, of the second stator 2 equalled 1 200 mm2. The distance 5 between the first rotor 3 and the stator 2 equalled 1 mm and the distance 5 between the stator 2 and the second rotor 3 equalled 0.1 mm.
The arrangement operates in such a way that a liquid contaminated with oil and with functional medium is retarded in the arrangement part with stators 2, further it is milled in the gap between the rotor 3 and the stator 2, and finally it is accelerated again in the rotors 3. In this way the milling of course bentonite and its dispersion in water, contaminated with oil, was accomplished.

Claims

C L A I M S
Combined pressure milling pump consisting of the pump (4) and a mill which are located in the housing (7), where said mill consists of at least one stator (2) and at least two rotors (3), both said stator (2) and said rotor (3) being fitted with passage holes (1, 6) and said rotor (3) being mounted on the shaft (8) which passes through the entire arrangement, c h a r a c t e r i s e d t h e r e i n, that the longitudinal axes of said retarding passage holes (1) of said stator (2) of the mill are inclined in a negative angle of 0 minutes up to 75 degrees with respect to said shaft (8) and the longitudinal axes of said accelerating passage holes (6) of said rotor (3) of said mill are inclined in a positive angle of 0 minutes up to 75 degrees with respect to said shaft (8), while the area of said retarding passage holes (1) of said stator (2) and, subsequently in the discontinuous streaming direction, the area of said accelerating passage holes (6) of said rotor (3) or the area of said accelerating passage holes (6) of said rotor (3) and, subsequently in the discontinuous streaming direction, the area of said retarding passage hole (1) of said stator (2) always decrease in accordance with ratio 1 2, and at the same time in the discontinuous streaming direction the sum of areas of said passage holes (1, 6) increases from 0 to 100 percent and the distances (5) between said stator (2) and said rotor (3) always change in the decreasing ratio one to one tenth.
PCT/CZ1995/000003 1994-03-16 1995-03-14 Combined pressure milling pump WO1995024966A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SK1505-95A SK150595A3 (en) 1994-03-16 1995-03-14 Combined pressure and milling pump
PL95311559A PL311559A1 (en) 1994-03-16 1995-03-14 Disintegrating force pump
EP95911189A EP0697915A1 (en) 1994-03-16 1995-03-14 Combined pressure milling pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ59894A CZ279892B6 (en) 1994-03-16 1994-03-16 Combined pressure and milling pump
CZPV598-94 1994-03-16

Publications (1)

Publication Number Publication Date
WO1995024966A1 true WO1995024966A1 (en) 1995-09-21

Family

ID=5461958

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ1995/000003 WO1995024966A1 (en) 1994-03-16 1995-03-14 Combined pressure milling pump

Country Status (5)

Country Link
EP (1) EP0697915A1 (en)
CZ (1) CZ279892B6 (en)
PL (1) PL311559A1 (en)
SK (1) SK150595A3 (en)
WO (1) WO1995024966A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB584395A (en) * 1942-12-30 1947-01-14 Sulzer Ag Improvements in or relating to pumps for dealing with liquids containing solid substances
US4015784A (en) * 1976-02-05 1977-04-05 Hughes Alvin W Emulsifier for sausage batter and the like
US4408724A (en) * 1981-04-17 1983-10-11 Meyer Charles R Pulverizer device for handling liquids containing solid and semi-solid materials
US5273220A (en) * 1991-11-05 1993-12-28 Rineco Chemical Industries Apparatus and methods for comminuting

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB584395A (en) * 1942-12-30 1947-01-14 Sulzer Ag Improvements in or relating to pumps for dealing with liquids containing solid substances
US4015784A (en) * 1976-02-05 1977-04-05 Hughes Alvin W Emulsifier for sausage batter and the like
US4408724A (en) * 1981-04-17 1983-10-11 Meyer Charles R Pulverizer device for handling liquids containing solid and semi-solid materials
US5273220A (en) * 1991-11-05 1993-12-28 Rineco Chemical Industries Apparatus and methods for comminuting

Also Published As

Publication number Publication date
EP0697915A1 (en) 1996-02-28
PL311559A1 (en) 1996-02-19
SK150595A3 (en) 1996-03-06
CZ59894A3 (en) 1995-08-16
CZ279892B6 (en) 1995-08-16

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