Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
  • B01J2/18—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using a vibrating apparatus
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
  • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
  • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
  • B29B9/00—Making granules
  • B29B9/10—Making granules by moulding the material, i.e. treating it in the molten state

Definitions

• the device for using this method is characterized by a cyclically controlled metering device, to which the medium to be processed can be fed continuously under pressure and by means of which the medium can be subdivided into individual sections which are preferably accelerated and can be ejected over a selectable distance.
• the metering device can be designed as a magnetic, hydraulic, pneumatic, piezoelectronic or mechanical, clocked driven shut-off valve, the valve member of the shut-off valve being able to be inserted into the delivery line as a ball or cone interacting with a conical valve surface or as a triangularly shaped tip Slider can be designed.
• the metering device can also be designed as a fluid valve designed in the form of a piece of hose connected to the delivery line, which is provided with a piezo-actuator drive element.
• the metering device can also be formed as a valve tappet which can be driven by a magnetically, hydraulically, pneumatically, piezoelectronically or mechanically clocked and which has a conical or spherical tip and which cooperates with a collecting space, which the medium from a storage container preferably integrated into the housing can be fed.
• the collecting space is to be formed by two or more supply channels which run radially to the chamber assigned to the valve tappet and are preferably incorporated in the cover and which are connected to the storage container directly via an annular space or via connecting channels.
• the storage container and or the housing in the area of the collecting space should be equipped with heating cartridges and a piston should be provided for driving the valve tappet, which piston is arranged in a guide bushing which can be replaced in the housing.
• a discharge device to the metering device, to which a carrier medium, for example compressed air, can be fed in order to accelerate the sections to be ejected.
• a carrier medium for example compressed air
• a vibration exciter can advantageously be included in the device.
• This vibration exciter is connected directly to the discharge device and generates an oscillation of 20 Hz to 20 kHz, depending on the type of contamination that is transmitted to the discharge device.
• This vibration is generated by a generator in the vibration exciter. Due to this vibration effect, no medium to be processed remains at the opening and there is a clean dripping.
• the outlet opening of the metering device or the discharge device should be arranged at an angle ⁇ of 25 ° to 35 ° inclined upwards with respect to the horizontal.
• the metering device or the discharge device is equipped with and / or with cooling elements
• the size of the pellets produced can also be controlled with difficulty with the aid of the metering device during manufacture, since the timed opening and closing of the metering device is easy to accomplish, the production of individual pellet sizes being possible without problems by changing the opening and closing times.
• the drawing shows two exemplary embodiments of a device for producing pellets from a viscous medium, which device is designed in accordance with the invention and are explained in detail below. Here shows, each in a schematic representation.
• FIG. 1 shows a device provided with a metering device in the form of a block diagram
• FIG. 2 shows the device according to FIG. 1 with a downstream discharge device
• FIG. 3 shows the device according to FIG. 1 in a modified embodiment
• FIG. 4 shows the metering device of the device according to FIG. 3 in an enlarged representation
• FIG. 7 shows a tunnel that can be used in the device according to FIG. 1, G
• the metering device 11 is designed as a fluid in the form of a piece of hose 19 connected to the conveying line 6, which is surrounded by a piezo-actuator drive element 20.
• the medium 2 is also divided into sections 3 by the pressure which acts on the tube piece 19 from the outside.
• the dosing device 11 is followed by a discharge device 21, which is connected to the dosing device 11 via an intermediate line 9. With the aid of the discharge device 11, the sections 3 are expelled in an accelerated manner.
• the discharge device 21 is supplied with a carrier medium, for example compressed air, via a line 22, which acts on the sections 3 to be ejected.
• the dosing device 11 is followed by a discharge device 21, which is connected to the dosing device 11 via an intermediate line 9.
• the vibration exciter 40 is directly connected to the discharge device 21.
• the vibration exciter 40 is set in vibration via the generator 41. This vibration system prevents the nozzle from clogging.
• the discharge device 21 is followed by a tunnel 31, in which the ejected sections 3 can be cooled with the aid of a gas atmosphere 35.
• the tunnel 31 can be equipped with spray nozzles 36, by means of which an active substance 37 can be sprayed, for example for coating the sections 3 and / or the pellets 4.
• the storage container 5 can optionally be equipped with heating elements 32 in order to increase the viscosity of the stored medium 2.
• the metering device 11 can be kept at a uniform operating temperature by means of heating elements 33. will hold.
• cooling elements 34 are provided in order to cool the pellets 4.
• the pellets 4 are produced by means of the device 1 in such a way that the medium 2, which is continuously supplied at constant pressure by means of the pump 7, is divided into individual sections 3 by the intermittently opening and closing shut-off valve 12; by changing the opening and closing times of the shut-off valve 12, the length of the sections 3 can be adjusted individually.
• the sections 3 are additionally accelerated by its valve body and ejected at an increased speed directly or with the aid of the discharge device 21.
• the individual sections 3 deform due to the surface tension, as shown in FIG. 7, to spherical pellets 4, which are almost exactly the same size and reproducible.
• the metering device 61 is formed by a valve tappet 62 which is provided with a conically shaped tip 63 which interacts with an adapted chamber 57.
• the valve tappet 62 is slidably inserted in a housing 52 which has a storage container 54 for " the medium to be processed as well as supply channels 55 and 55 ', via which the medium can be supplied via an annular space 66 to a collecting space 65 assigned to the valve tappet 62.
• the collecting space 65 is formed by three radially directed channels 67, which are connected to the annular space 66 and open into the chamber 57, which is delimited by a counter surface 59 assigned to the valve tappet 62.
• the channels 67 as well as the chamber 57 are incorporated in a cover 56 which is screwed onto the housing 52.
• an outlet opening 58 is provided in the extension of the chamber 57 in the cover 56, through which the sections are ejected individually.
• a piston 64 which can be driven in a clocked manner and which is displaceably arranged in a bushing 53 inserted into the housing 52, is used to drive the valve tappet 62.
• a diaphragm 68 through which valve tappet 62 penetrates, seals its passage through housing 52. And in order to be able to process the medium at a selectable operating temperature, several heating cartridges 69 and 70 are inserted into the housing 52 in the area of the storage container 54 and the valve tappet 62.
• Compressed gas is applied to the medium in the reservoir 54 via a connection 60, so that the medium is pressed into the chamber 57 via the channels 55, 55 ', the annular space 66 and the channels 67 forming the collecting space 65. If the valve tappet 62 is driven in a clocked manner by means of the piston 64, a section sized according to the capacity of the chamber 57 is ejected from the outlet opening 58 with each stroke movement, which section then automatically forms into a pellet.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
• Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
• Formation And Processing Of Food Products (AREA)
• Medicinal Preparation (AREA)
• Coating Apparatus (AREA)
• Glanulating (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=7912790

Family Applications (1)

Country Status (17)

Families Citing this family (6)

Family Cites Families (3)

• 1999
  • 1999-06-28 DE DE19929526A patent/DE19929526A1/de not_active Withdrawn
• 2000
  • 2000-06-23 EP EP00938812A patent/EP1194221A1/de not_active Withdrawn
  • 2000-06-23 BR BR0011993-8A patent/BR0011993A/pt active Pending
  • 2000-06-23 CN CN00809604A patent/CN1358111A/zh active Pending
  • 2000-06-23 MX MXPA01012775A patent/MXPA01012775A/es not_active Application Discontinuation
  • 2000-06-23 EE EEP200100710A patent/EE200100710A/xx unknown
  • 2000-06-23 AU AU54065/00A patent/AU5406500A/en not_active Abandoned
  • 2000-06-23 CA CA002370595A patent/CA2370595A1/en not_active Abandoned
  • 2000-06-23 JP JP2001506010A patent/JP2003503174A/ja active Pending
  • 2000-06-23 EA EA200200044A patent/EA200200044A1/ru unknown
  • 2000-06-23 WO PCT/EP2000/005801 patent/WO2001000311A1/de not_active Application Discontinuation
  • 2000-06-26 PE PE2000000636A patent/PE20010282A1/es not_active Application Discontinuation
  • 2000-06-27 CO CO00048077A patent/CO5271725A1/es unknown
  • 2000-06-27 UY UY26223A patent/UY26223A1/es not_active Application Discontinuation
  • 2000-06-28 AR ARP000103250A patent/AR025848A1/es active Pending
• 2001
  • 2001-12-20 ZA ZA200110459A patent/ZA200110459B/xx unknown
• 2002
  • 2002-09-25 HK HK02106990.5A patent/HK1045275A1/zh unknown

Non-Patent Citations (1)

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