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
  • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
  • B02C17/02—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with perforated container

Definitions

• the present invention relates to a rotary drum crusher.
• the field of the invention is that of crushing to reduce the size of solid bodies.
• This apparatus comprises a pressure means bearing on a receptacle.
• This receptacle takes the form of a drum whose wall is perforated, this curved wall being movable along the axis of the drum.
• the pressure means is inside the drum and comprises a roller integral with a lever.
• This roller is not free to circulate in the drum and again a significant proportion of the solid body treated can be reduced to dust.
• the object of the present invention is therefore to reduce the size of solid bodies by optimizing the proportion of fragments produced during the treatment of these bodies.
• a crusher comprises a pressure means resting on a receptacle, a crusher provided for shearing solid bodies between this pressure means and the receptacle, the latter being in the form of a drum whose curved wall is perforated, this curved wall being movable in rotation along a reference axis; in addition, the pressure means takes the form of a carriage having two movable rollers, this carriage being freely mounted in the drum.
• the reference axis is inclined relative to the horizontal.
• the carriage is optionally provided with an arm supporting a third roller.
• one of the sides of the drum has an opening allowing the introduction of solid bodies.
• the crusher comprises guiding means for maintaining the pressure means within the drum.
• the curved wall is formed of a plurality of regularly spaced spacers.
• the drum can be mounted on rollers subject to a frame.
• the advantageous application of the crusher is the crushing of solid bodies made of cellular glass.
• FIG. 1 represents a sectional view of the crusher
• Figure 2 shows a perspective view of the crusher.
• the crusher comprises a receptacle taking in this case the shape of a drum 100 whose curved wall 101 is cylindrical. This wall is rotatable along a reference axis 102 which is the axis of revolution of the drum 100.
• This drum 100 also comprises two lateral flanks taking the respective shapes of a ring 103 and a disc 104.
• a slightly inclined chute 105 opens into the drum 100 through the recessed center of the ring 103.
• This chute 105 allows the gravity feed of the solid bodies inside the drum 100.
• a slight inclination with respect to the horizontal (of the order of 10%) of the reference axis 102 promotes the distribution of the solid bodies 126 along the curved wall 101.
• the rotation of the drum 100 along the reference axis 102 is performed by a mechanical subassembly.
• rollers 106, 107 connected to a frame 109 support the ring 103.
• a shaft 110 aligned on the reference axis 102, secured to the disk 104 passes through a bearing 108 also fixed on the frame 109.
• a grid is here made with a plurality of spacers 112 fixed on the sidewalls 103, 104. These plate-shaped spacers are arranged radially around the reference axis 02 and regularly spaced.
• the inner edges of these plates 112 define its cylindrical wall 101.
• the edges of these inner edges are angular to improve the shearing of the solid bodies.
• the radial section at the inner edge is substantially rectangular.
• this perforated cylindrical wall 101 can take a multitude of other forms, for example a plurality of identical and coaxial thin rings regularly spaced between the flanks 103, 104.
• the rotation of the drum 100 can be performed by any actuator known to those skilled in the art for driving the shaft 110.
• the crusher also comprises a pressure means 120, positioned in abutment inside the drum 100, on its cylindrical wall 101.
• This pressure means 120 here takes the form of a carriage 121 provided with two movable rollers 122, 123 whose axes are parallel to the reference axis 102.
• This mobile carriage 121 may be provided with a mobile arm 125 supporting a third roller 124 also parallel to the reference axis 102.
• the drum 100 rotates in a counterclockwise direction. Therefore, this third roller 124 rolls on the solid bodies 126 introduced into the drum 100 which causes a jerky movement of the arm 125. This jerky movement of the arm 125 produces a hammering effect of the third roller 124.
• the means of pressure 120 may be made by a single roller whose axis is parallel to the axis of rotation 102 of the drum 100 as it can be achieved by a plurality of rollers.
• the force exerted by the pressure means 120 on the drum 100 is here due to gravity. However, this force can be exerted by a mechanical member, for example of the spring type, interposed between the frame 109 and the pressure means 120.
• the pressure means 120 is freely mounted in the drum 100.
• a guide means is required to hold it inside the drum 100.
• This guide means can be made for example with a rail circular 1 1 1 positioned inside the drum 100.
• This rail 1 1 1 centered on the reference axis 102, parallel to the sidewalls 103, 104 and protrudes from the curved wall 101. It is then necessary to provide a groove 1 13 in the rollers 122 (see Figure 2).
• the solid bodies 126 are introduced inside the drum by the chute 105, they fall on the cylindrical wall 101 of the drum 100 in rotation and are moved towards one of the rollers 122, 123, 24. These solid bodies 126 are each wedged between a roller 122, 123 and the drum 100 before being sheared and passed through the spacers 1 12 to fall into a manifold 127.
• the geometry of the perforated surface conditions the calibration of the sheared solid bodies.
• the crusher according to the invention is intended to reduce the size of solid bodies. It finds a particularly advantageous application for cellular glass.

Landscapes

• Engineering & Computer Science (AREA)
• Food Science & Technology (AREA)
• Crushing And Grinding (AREA)
• Developing Agents For Electrophotography (AREA)
• Crushing And Pulverization Processes (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=42470542

Family Applications (1)

Country Status (3)

Family Cites Families (6)

• 2009
  • 2009-12-24 FR FR0906341A patent/FR2954714B1/fr not_active Expired - Fee Related
• 2010
  • 2010-12-23 WO PCT/FR2010/000869 patent/WO2011077018A2/fr not_active Ceased
  • 2010-12-23 EP EP10814762A patent/EP2516063A2/de not_active Withdrawn

Non-Patent Citations (1)

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