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
  • F04D3/00—Axial-flow pumps
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/18—Rotors
  • F04D29/22—Rotors specially for centrifugal pumps
  • F04D29/2261—Rotors specially for centrifugal pumps with special measures
  • F04D29/2288—Rotors specially for centrifugal pumps with special measures for comminuting, mixing or separating
• • 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 present invention relates to a sanitary crusher for installation for lifting waste water and solid waste, of the type comprising a box receiving water and an electric motor, the axis of which has at one end a rotor rotor pump and grinding means. opposite a shredding chamber defined between the bottom of the box and a peripheral wall provided with an inlet opening.
• sanitary disposers are usually placed behind the toilet bowl. They can also receive wastewater from other sanitary devices. They can also be built into a technical partition.
• Some sanitary shredders have a solid material shredding blade mounted at the end of an axis of the engine near the outlet of the toilet bowl. Only water and sufficiently ground solids pass through the holes of a cylindrical strainer to a tank to be sucked in by a pump located in the bottom of the tank and mounted at the other end of the engine.
• This type of device has a number of disadvantages: fibrous products such as wipes or sanitary napkins which are difficult to grind tend to accumulate inside the strainer, which can end up blocking the device . It is then necessary to disassemble the assembly to restore it to operating condition.
• the shredding system consists of a few cutting blades mounted on the rotor, inside the centrifugal pump.
• the latter has an axial inlet of relatively small diameter to function properly.
• some solid waste such as paper towels, towels or sanitary pads thrown into the toilet bowl, can become blocked at the inlet of the pump and cling to the rotor, which also eventually blocks the rotor. -this.
• the grinding device has a blade and a counterblade arranged at the inlet of the pump, one being driven in rotation by the pump rotor and 1 ' the other being fixed around the perimeter to act in the manner of shears.
• the device however has the drawback of generating a noise of friction of the blades which is annoying for the user, as well as risks of blocking in the event of accidental penetration of hard objects.
• a sanitary crusher for installation for lifting wastewater and solid waste, of the type comprising at least one channel for supplying water into a box, an electric motor whose axis has one end a rotor rotor pump and grinding means opposite a grinding chamber provided with an inlet opening, characterized in that the front face of the rotor is substantially planar and has a plurality of passages for the 'water, arranged substantially radially and opening onto the circumference of the rotor, and in that each passage of the rotor is extended by a channel delimited by helical blades, said rotor being housed in the body of the pump so that its front face is at least substantially in the plane of the opening of the pump body, shredding members being arranged in axial projection relative to said front face.
• the shredding devices are completed by a circular cutting blade, arranged in the plane of the opening of the body, and which defines with the front face of the rotor the inlet opening of the pump.
• the solid waste entrained by the movement of the water sucked in by the pump arrives on the front face of the rotor where they are cut and / or shredded by the shredding members, while at the same time being pushed back from the rotor in a turbulent movement due to the successive shocks of the projecting shredding members, and sucked in by the overall movement of the water.
• This movement of turbulence is generated by the rotor of the helico-centrifugal type, the helical shaped blades of which drive the water both towards the periphery of the rotor, due to the centrifugal force, and towards the rear part of the rotor, the inclination of the blades relative to an axial plane.
• the centrifugal force exerted by the rotor drives the residue to the outer cutting blade.
• the front part of the rotor is therefore closed with the exception of the passage (s) formed on the front face and which, of straight or curved elongated shape and arranged substantially radially, therefore open onto the periphery of the front face of the rotor.
• the width of these passages is in a range of 2 to 15 mm, the width of the passages preferably being constant or increasing from the center of the rotor to the outside of the rotor.
• the shredding members are arranged in an axial projection of 1 to 10 mm on the front face of the rotor. These shredding members are made of a hard, wear-resistant material, such as a metal for example, and are sized and shaped so as to cut and / or lacerate the solid waste without retaining it.
• the shredding members can be of substantially conical, straight or inclined shape or preferably be flat either in sawtooth or in cutting strips, as soon as the leading face is sufficiently inclined to avoid retaining and driving in rotation fibrous substances.
• the shredding members can be arranged on an insert on which the rotor is molded or said insert, such as a metal plate, is attached to the front face of the rotor, the metal plate being cut so as to leave the passages for the rotor free when affixed to the front face of said rotor.
• These shredding organs can also be fixed in compartments provided for this purpose on the front face of the rotor.
• the opening of the pump body is provided with a circular cutting blade with an inside diameter slightly greater than the outside diameter of the front face of the rotor.
• the grinding chamber is defined between the front face of the rotor provided with grinding members, the front face of the pump body, a bottom and a peripheral wall.
• This non-closed peripheral wall is preferably substantially circular and has a shape bringing the water and the solids in vortex movement towards the center of the rotor.
• said peripheral wall has an end in the shape of a curved spout pointing in the direction of the axis of rotation of the rotor.
• This spout is disposed adjacent to the inlet of the water and waste towards the grinding chamber, so as to bring the direction of the vortex flow substantially parallel and in the same direction as the flow entering the grinding chamber.
• the bottom of the grinding chamber has at least one protuberance which is arranged eccentric with respect to the axis of rotation of the rotor. This or these protuberances help the movement of the solids towards the rotor and the shredding members in the vortex movement generated in the shredding chamber.
• the motor and the pump as well as the electrical components of the mill are enclosed in a watertight compartment of a box in which it is housed and which has a substantially parallelepipedic or cylindrical shape.
• this sealed compartment is produced in the form of a cassette which can be fitted into the box and can be dismantled, said cassette being in particular adaptable to the end of said box, the bottom of which constitutes the bottom of the shredding chamber, the peripheral wall also defining the maceration chamber.
• a part of the box located immediately behind the toilet bowl serves as a reserve chamber for quickly collecting water from the toilet.
• the wastewater supply channel can be in the form of a bent pipe passing through the box and bringing the water and solid waste out of the toilet bowl to the inlet opening of the grinding chamber. This ensures that the solids are immediately sucked up and contained in the grinding chamber, while the excess water which cannot be immediately contained in the latter flows towards the reserve chamber provided in the box and acting as a buffer tank. . We This avoids the accumulation of solid waste in the box.
• the pipe receiving the wastewater can be positioned directly on the pumping and grinding member.
• FIG. 1 represents a sectional view of a grinder according to the invention (without its covers),
• FIG. 2 represents a perspective view of the crusher casing according to FIG. 1,
• FIG. 3 represents a top view of the crusher casing according to FIG. 1,
• FIG. 4 represents a front perspective view of a rotor of the mill according to the invention, equipped with shredding members,
• FIG. 5 represents a front perspective view of the rotor according to FIG. 4 in the pump body
• FIG. 6 represents a side perspective view of another rotor according to the invention.
• Figure 7 shows a perspective view from below of a shredding insert intended to be included in a rotor.
• the sanitary crusher for installation for lifting wastewater and solid waste comprises a box 1 receiving the water, a sealed compartment 2 containing the electrical members E, as well as an electric motor M arranged vertically along an axis X.
• This motor M drives at its lower end a rotor 5 with blades 6 of a lifting pump.
• the rotor 5 is provided with shredding means arranged opposite a shredding chamber 3 defined between the bottom of the box 1 and a peripheral wall 4 provided with an inlet opening 4a.
• the front face 5a of the rotor 5 is substantially planar and has a plurality of passages 7 for water, arranged substantially radially and opening onto the periphery of the rotor 5. At each passage 7 corresponds to a helical blade 6 of the rotor 5.
• the rotor 5 is housed in the body 8 of the pump so that its front face 5a is substantially in the plane of the opening of the pump body 8 (cf. FIG. 1) or slightly projecting from this plane (cf. Figure 5).
• the opening of the pump body 8 with an inside diameter slightly greater than the outside diameter of the front part 5a of the rotor 5 is preferably materialized by a circular cutting blade 11.
• the shredding means are formed by members 9, of conical shape inclined to FIGS. 4 and 5, arranged in axial projection relative to said front face 5a.
• FIGS 6 and 7 an alternative embodiment of shredding members 9. These are formed on a metal insert 10 then attached to the face before 5a of the rotor 5 or the rotor can be overmolded on said insert 10.
• the insert is made in a star whose branches 10 'are housed between the passages 7 for water.
• the end of each branch 10 ' is cut into a point and this point is folded back to form a shredding member 9.
• each point 9 is arranged at near a passage 7.
• the motor M and the pump as well as the electrical members E are housed in a sealed compartment 2 made in the form of a cassette (see FIG. 1) in the bottom of which is housed the pump body 8 with the rotor 5.
• This cassette 2 is placed in the box 1 so that the rotor 5 faces the bottom of the box 1 at the level of the shredding chamber 3 defined by the peripheral wall 4.
• This peripheral wall 4 is substantially circular and therefore delimits the shredding chamber 3, containing the vortex movement (according to arrow C) of the water and the solids entering said chamber 3 (cf. FIG. 3).
• the peripheral wall 4 has an end in the shape of a curved beak 4b pointing substantially in the direction of the axis of rotation X of the rotor 5. This particular shape of the end of the peripheral wall promotes the entry of waste into the grinding chamber 3 but also prevents the exit of this waste, the redirection of the water induced by this spout 4b tending to bring the waste back to the center of the shredding chamber 3.
• the bottom of the box 1 can comprise in the said grinding chamber 3 raised portions acting on the movement of the waste, so as to improve the grinding process.
• One of the protrusions 12 is located near said axis X of the rotor while the other protrusion 13 is disposed substantially at the junction of incoming and swirling flows in the grinding chamber 3.
• the cassette 2 being preferably positioned at one end of the box 1, the discharge of waste water and solid waste at the outlet of a toilet bowl, for example, is not opposite the grinding chamber 3.
• a water supply channel is put in place, for example an angled pipe 14, which brings the water and solid waste out of a discharge to the opening 4a of the shredding chamber 3.
• the end of the wall 4 also has a spout 4c in a direction substantially opposite to that of the spout 4b so that, at the outlet of the pipe 14, this spout 4c and the spout 4b guide the solid waste towards the 'inlet 4a of the shredding chamber 3.
• the spout 4c also makes it possible to define a zone of non-turbulence for capturing the height of water detected by a pressure switch.
• the solid waste entrained by the movement of the water sucked in by the pump arrives on the front face of the rotor 5 where it undergoes cutting and / or shredding by the shredding members 9, while at the same time being repelled from the rotor 5 in a movement of turbulence due to the successive shocks of the organs ' of shredding 9 projecting, and sucked by the overall movement of the water.
• This turbulence movement is generated by the rotor 5 of the helico-centrifugal type.
• the blades 6 of helical shape drive the water both towards the periphery of the rotor 5 due to the force centrifugal and towards the rear part of the rotor 5 due to the inclination of the blades 6 relative to an axial plane.
• the cassette 2 has an outlet 15 from the pump body 8 which can be connected by the outlet manifold 15 to a discharge pipe 16.
• This discharge pipe 16 is preferably extended by a non-return valve secured to the discharge pipe.
• the box 1 has connections 20 for other water and waste arrivals so that it is connectable to other wastewater lifting installations such as sink, bidet, shower, etc.
• hood system enclosing the upper part of the engine, provided with fins, and channeling the air flow.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Crushing And Pulverization Processes (AREA)
• Absorbent Articles And Supports Therefor (AREA)
• Grinding-Machine Dressing And Accessory Apparatuses (AREA)
• Orthopedics, Nursing, And Contraception (AREA)
• Dental Preparations (AREA)
• Reciprocating Pumps (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=8852869

Family Applications (1)

Country Status (15)

Families Citing this family (10)

Family Cites Families (7)

• 2000
  • 2000-07-25 FR FR0009709A patent/FR2812312B1/fr not_active Expired - Fee Related
• 2001
  • 2001-07-24 CN CNB018133835A patent/CN1193169C/zh not_active Expired - Fee Related
  • 2001-07-24 AU AU2001279902A patent/AU2001279902A1/en not_active Abandoned
  • 2001-07-24 AT AT01958170T patent/ATE300675T1/de not_active IP Right Cessation
  • 2001-07-24 PL PL358553A patent/PL201866B1/pl unknown
  • 2001-07-24 CA CA002412597A patent/CA2412597A1/fr not_active Abandoned
  • 2001-07-24 RU RU2003101339/06A patent/RU2241857C2/ru active
  • 2001-07-24 US US10/332,813 patent/US6969018B2/en not_active Expired - Fee Related
  • 2001-07-24 DK DK01958170T patent/DK1303703T3/da active
  • 2001-07-24 WO PCT/FR2001/002414 patent/WO2002008610A1/fr active IP Right Grant
  • 2001-07-24 ES ES01958170T patent/ES2246335T3/es not_active Expired - Lifetime
  • 2001-07-24 DE DE60112299T patent/DE60112299T2/de not_active Expired - Lifetime
  • 2001-07-24 EP EP01958170A patent/EP1303703B1/de not_active Expired - Lifetime
  • 2001-07-24 NZ NZ523163A patent/NZ523163A/en not_active IP Right Cessation
• 2003
  • 2003-01-23 NO NO20030351A patent/NO20030351L/no not_active Application Discontinuation

Non-Patent Citations (1)

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