EP2148763B8 - Device for comminuting dry ice granules, and dry ice dispensing arrangement having such a device - Google Patents

Device for comminuting dry ice granules, and dry ice dispensing arrangement having such a device Download PDF

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Publication number
EP2148763B8
EP2148763B8 EP08716466A EP08716466A EP2148763B8 EP 2148763 B8 EP2148763 B8 EP 2148763B8 EP 08716466 A EP08716466 A EP 08716466A EP 08716466 A EP08716466 A EP 08716466A EP 2148763 B8 EP2148763 B8 EP 2148763B8
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EP
European Patent Office
Prior art keywords
dry ice
comminution
crushing
flow channel
housing
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP08716466A
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German (de)
French (fr)
Other versions
EP2148763A1 (en
EP2148763B1 (en
Inventor
Bernd Knisel
Ralf Schick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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Application filed by Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP2148763A1 publication Critical patent/EP2148763A1/en
Publication of EP2148763B1 publication Critical patent/EP2148763B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2

Definitions

  • the invention relates to a device for comminuting dry ice granules, comprising a housing with a flow channel for dry ice granules which can be applied to a surface to be cleaned by means of compressed gas and a first comminution element for comminuting the dry ice granules to be dispensed.
  • the invention relates to a dry ice dispensing assembly for dispensing a mixture of compressed gas and dry ice granules with such a device.
  • a dry ice blasting apparatus for providing a mixture of compressed gas, preferably compressed air, and dry ice.
  • the dry ice blasting device can be connected to a compressed gas source.
  • the dry ice blasting device comprises a supply of dry ice and a metering device with which the dry ice can be admixed with the compressed gas.
  • the dry ice is stored in the form of dry ice granules (so-called "pellets”), which usually has the size of rice grains, and introduced by means of the metering device in the flow path of the compressed gas, so that it mixes with the compressed gas.
  • a surface to be cleaned can be subjected to pressurized dry ice granules.
  • Contaminants adhering to the surface are formed by the application of Dry ice granules strongly cooled so that they become brittle and detached from the surface.
  • the devices mentioned at the beginning for the comminution of dry ice granules are usually offered as accessories to dry ice dispensing arrangements.
  • dry ice granules For comminuting dry ice granules, they comprise a flow channel through which the mixture of compressed gas and dry ice granules flows and on which a comminution element is arranged. If the dry ice granules mixed with compressed gas collide with the comminution element, it can break and be crushed as a result. As a result, the comminuted pellets on the output side of the device have a smaller average size than the input side of the device.
  • the dry ice granules comminuted in this way are preferably suitable for cleaning sensitive surfaces, fine structures or undercuts.
  • the housing comprises a pipe enclosing the flow channel, in which a crushing member is welded in the form of a metal wire. This is manufacturing technically complex, and moreover, the wire is subject to high wear.
  • the crushing member is formed as a mesh and inserted into a tube enclosed by the housing. In such devices, there is a risk that the grid mesh is added during operation with dry ice granules, so that the flow channel is blocked.
  • Object of the present invention is to provide a device of the type mentioned, with the different degrees of comminution of dry ice granules can be achieved in a simple manner.
  • the device has at least one second crushing member which can be arranged in the housing in a position in which in combination with the first crushing element aPolzerkleintationsgrad is achieved, which is greater than that alone with the first crusher achievable Einzelzerklein ceremoniessgrad.
  • a "spatial position" of the at least one second comminution element in the housing or a part thereof is relatively "spatial” considered to the first crushing member.
  • the at least one second comminution element can assume a position in the housing in which the overall comminution level, ie the degree of comminution of the dry ice granulate after passing through both comminution elements, is greater than the single comminution rate that can be achieved with the first comminution element alone.
  • the at least one second crushing member can be removed from the housing. This makes it possible to achieve with the device also achievable alone with the first crushing Einzelzerklein ceremoniessgrad. By means of the device according to the invention is therefore given the opportunity to achieve by selectively using the at least one second crushing member in a technically simple manner, at least two degrees of comminution of dry ice granules.
  • the first crushing member can be removed from the housing, so that only the at least one second crushing member can be arranged in the housing.
  • the possibility can be given of achieving, by means of the at least one second comminuting member alone, a single degree of comminution which differs from the single comminution degree which can be achieved only with the first comminuting member.
  • a total of at least three degrees of comminution of dry ice granules can thus be achieved by optional use of the first comminuting member and / or the at least one second comminuting member.
  • the at least one second crushing member can be arranged in the housing in a position in which the total degree of comminution is the same as that achievable with the first comminution element Einzelzerklein ceremoniessgrad.
  • the at least one second crushing member may remain in the housing. As a result, for example, the risk can be reduced that the at least one second comminuting member is lost.
  • the at least one second comminution element can be arranged in the housing in a plurality of layers, in which the overall comminution rate is greater than the single comminution rate achievable alone with the first comminution element. This facilitates a user's handling of the device.
  • the Device can be used in many ways, because by means of the first comminution member and the at least one second comminuting member, a plurality of different total comminution levels of dry ice granules can be achieved.
  • the device has at least one second comminuting member which is identical to the first comminuting member. Due to the identical design, the production costs for the Reduce device. If two or more second comminuting members are present, it can be provided, in particular, that all second comminuting members are identical to the first comminuting member.
  • the device has at least one second comminuting member, which is designed differently from the first comminuting member.
  • the first crushing member and the at least one second crushing member each different Einzelzerklein ceremoniessgrade between which the user can select in addition to the total degree of comminution.
  • Such an embodiment therefore has a high versatility. If there are two or more second comminuting members, it can be provided that all second comminuting members are designed differently from the first comminuting member.
  • the first and / or the at least one second comminuting member for comminuting dry ice granules comprises a grid section which can be positioned in the flow channel.
  • the grid section By means of the grid section, it is possible to reduce the cross section of the flow channel. The guided by compressed gas through the flow channel dry ice granules can impact the grid section, break and thereby crushed.
  • the at least one second comminution element can be converted into different positions by rotation of its grating section relative to the grating section of the first comminuting element, in which different total degrees of comminution can be achieved.
  • This is it to a structurally simple way to achieve different Baczerklein ceremoniessgrade with the first and the at least one second crushing member.
  • the rotation of the grating portion of the at least one second crushing member takes place about an axis of the flow channel.
  • the grid portion of the at least one second crushing member is to be rotated about an axis oriented transversely to the axis of the flow channel.
  • the rotation can be done, for example, by predeterminable angle, but it can also be provided that the rotation angle is infinitely adjustable.
  • the grid section may be independent of the remaining sections of the at least one second reducing member and be rotatable relative thereto.
  • the first and / or the at least one second comminution member has an edge portion with which the first and / or the at least one second comminution member can be supported on the housing.
  • By supporting on the housing can be ensured that the first and / or the at least one second crushing member is immobile relative to the flow channel.
  • the mechanical stability of the device can be improved.
  • the edge section of the first and / or of the at least one second comminution element preferably at least partially encloses a grid section of the first and / or at least one second comminution section which can be positioned in the flow channel.
  • the first and / or the at least one second crushing member is disc-shaped.
  • the disc may, for example, have a grid section that is at least partially enclosed by a rim section.
  • the first and the at least one second crushing member when disposed in the housing, are spaced apart along the flow channel.
  • the comminution of the dry ice granules can therefore be carried out, for example, in two spaced-apart planes. This reduces the risk that the first and / or the second crushing member is added during operation of the device with dry ice.
  • the housing has a receiving body with at least one comminuting member receptacle for the first and / or the at least one second comminuting member.
  • the at least one comminution member receiving the first and / or the at least one second crushing member may for example be held immobile.
  • the first and / or the at least one second comminuting member in the at least one comminuting member receptacle can be conveyed in various ways. gen is arranged. In particular, in each of the various layers a respective different total degree of comminution can be achieved.
  • the first and / or the at least one second comminuting member can be arranged immovably in the at least one comminuting member receptacle relative to the flow channel.
  • the at least one comminuting member receptacle has a contact surface for the first and / or the at least one second comminuting member, on which this can be placed and aligned relative to the flow channel. This simplifies a user's handling of the device.
  • the alignment thereof is simplified relative to the flow channel. This can ensure that the first and / or the at least one second comminuting member is in the correct position during operation of the device.
  • a structurally simple embodiment of the at least one comminuting member receptacle can be achieved in that it is designed as a groove-shaped recess oriented transversely to the flow channel.
  • the first and / or the at least one second crushing member which is advantageously disc-shaped, arranged and aligned relative to the flow channel.
  • the at least one comminution member receptacle can be formed as a slot-shaped opening oriented transversely to the flow channel.
  • the housing has a sleeve which surrounds the receiving body. This makes it possible to give the device a compact design.
  • the receiving body can be fixed immovably relative to the flow channel.
  • An immovable fixation of the receiving body relative to the flow channel can be achieved, for example, in that the receiving body can be arranged in a form-fitting manner in the sleeve described above.
  • the housing has at least one housing cover detachably connectable to the sleeve.
  • the sleeve can be closed, so that the receiving body is securely held in the sleeve with the optionally received therein first and / or at least one second crushing member.
  • the lid can be detached from the sleeve to remove the receiving body from the sleeve. For a particularly simple handling of the lid with the sleeve can be screwed.
  • the invention also relates to a dry ice dispensing arrangement for dispensing a mixture of compressed gas and dry ice granules.
  • the object of the present invention is to further develop such a dry ice dispensing arrangement so that dry ice granules with a different degree of comminution can be dispensed therewith in a technically simple manner.
  • the dry ice dispensing arrangement comprises at least one device for comminuting dry ice granules, as described above.
  • the dry ice dispensing arrangement according to the invention then has the advantages already described in connection with the explanation of the device.
  • the dry ice dispensing arrangement can be designed, for example, as a dry ice blasting device or else as a dry ice dispensing device that can be connected to a dry ice blasting device.
  • the latter can be configured for example in the form of a blasting gun.
  • the device according to the invention for crushing dry ice granules is arranged in or on the dry ice blasting device and / or in or on the dry ice dispensing device.
  • the shredding device according to the invention for ease of handling is solvable with theniceisstrahlvor- direction or the dry ice dispenser connectable, for example by screwing.
  • Figure 1 a perspective view of an inventive
  • Figure 2 is an exploded view of the device of Figure 1;
  • Figure 3 is a sectional view taken along the line 3-3 in Figure 1;
  • FIGS. 4A, 4B, 4C show exemplary possibilities of combining comminution elements of the device from FIG. 1 according to a first embodiment for achieving different overall comminution levels;
  • Figure 4D is a view similar to Figures 4A to 4C with only one
  • FIG. 5 shows a view of the device from FIG. 1 in the direction of the FIG
  • FIG. 6 shows a receiving body for comminution elements of the device from FIG. 1;
  • FIGS. 7A, 7B, 7C show exemplary possibilities of combining comminution elements of the device from FIG. 1 according to a second embodiment for achieving different overall comminution levels;
  • FIG. 7D a view similar to FIGS. 7A to 7C with only one
  • Figure 8 a schematic view of an inventive
  • a preferred embodiment of a device according to the invention for the comminution of dry ice granules which is referred to below as "crusher", occupied by the reference numeral 10.
  • the crusher 10 may be part of a dry ice dispensing arrangement according to the invention, as shown in FIG.
  • the crusher 10 has a housing 12 with a sleeve 14 and a housing cover 16 which can be detachably connected to the sleeve 14 and which is likewise of sleeve-shaped design.
  • the sleeve 14 and the housing cover 16 have a common axis 18 around which they are formed substantially rotationally symmetrical.
  • the sleeve 14 has an internal thread, not shown in the drawing, via which it can be screwed, for example, to a dry ice dispenser of a dry ice dispensing arrangement.
  • the sleeve 14 At its housing cover 16 facing the second sleeve end 24, the sleeve 14 comprises a not shown in the drawing external thread, which cooperates with a not shown in the drawing internal thread of the housing cover 16 for screwing the sleeve 14 and the housing cover 16.
  • the housing cover 16 carries on its side facing away from the sleeve 14 cover end 26 a not shown in the drawing external thread on which, for example, a jet nozzle of a dry ice dispensing assembly can be screwed.
  • the housing 12 comprises a sliding over the sleeve 14 outer ring 28, which is made for example of rubber and acts cold-insulating in the operation of the crusher 10.
  • a receiving body 30 for crushing members 32, 34, 36 and 38 for comminuting dry ice granules can be arranged inside the sleeve 14.
  • the receiving body 30 is formed as a hollow cylinder 40 and aligned in arrangement in the sleeve 14 coaxial with the sleeve 14 and the housing cover 16.
  • the receiving body 40 is held immovably in the sleeve 14.
  • Its central through bore 42 is aligned with a central through-bore 44 of the housing cover 16 and with a central through-bore 46 of the sleeve 14 to form over the entire length of the housing 12 extending flow channel 48.
  • the senende 20 forms an inlet 50 for the flow channel 48
  • the lid end 26 forms an outlet 52 for the flow channel 48.
  • a mixture of compressed gas and dry ice granules which can be delivered by a dry ice dispensing arrangement, guided and applied to a surface to be cleaned.
  • the crusher 10 serves to comminute the dry ice granules in the manner described below.
  • the crusher comprises 10 crushers 32, 34, 36, 38 for dry ice granules.
  • the comminution member 32 is hereinafter referred to as the first comminution member 32 of the crusher 10, and the comminution members 34, 36 and 38 are referred to below as the second comminution members of the comminutor 10.
  • the crushing members 32, 34, 36 and 38 are formed as discs 54, 56, 58 and 60, wherein the disc 58 is identical to the disc 54 and the disc 60 is formed identical to the disc 56.
  • the discs 54 and 56 have a different configuration. In the following, only the distinguishing features of the discs 54, 56, 58 and 60 are provided with different reference numerals.
  • the disks 54 and 56 comprise grid sections 62 and 64, respectively, with bars 66 and 68, respectively.
  • the bars 66 of the pane 54 are offset from the bars 68 of the pane 56.
  • the offset is about half the value of the mutual distance of the grid bars 66.
  • the grid sections 62 and 64 become each enclosed by an identically formed edge portion 70.
  • the grid sections 62 and 64 have in plan view of the discs 54, 56, 58 and 60 a circular contour whose diameter corresponds to the diameter of the through hole 42 and thus of the flow channel 48 in the receiving body 30.
  • the discs 54, 56, 58 and 60 When viewed from above, the discs 54, 56, 58 and 60 have the contour of a circle, on the outside of which two circular segments oriented perpendicular to one another have been removed, so that the edge portion 70 has two contact edges 72 and 74 extending at right angles to one another.
  • the receiving body 30 For receiving the disks 54, 56, 58 and 60, the receiving body 30 comprises identically designed comminuting member receptacles 76, 78, 80 and 82 (FIG. 2). These each comprise a groove-shaped recess 84, which is aligned perpendicular to the axis of the hollow cylindrical receiving body 30 and thus when it is arranged in the housing 12 perpendicular to the flow channel 48.
  • the groove-shaped recesses 84 engage so deeply in the receiving body 30 that they pass through the flow channel 48.
  • a rectilinear groove base 86 in each case forms a contact surface 88 for the contact edge 72 or 74 of a disk 54, 56, 58 and 60, respectively.
  • the width of the groove-shaped recesses 84 is dimensioned such that the discs 54, 56, 58 and 60 are each play-free between side walls 90 and 92 of a groove-shaped recess 84 can be used.
  • the edge portion 70 may be supported on the side walls 90 and 92, so that the discs 54, 56, 58 and 60 aligned with respect to the flow channel 48 can be.
  • one of the abutment edges 72 and 74 are applied to the groove bottom 86.
  • the diameter of the receiving body 30 corresponds to the diameter of the basic shape of the discs 54, 56, 58 and 60, d. H. disregarding the separated circle segments.
  • the first crushing member 32 is disposed in the receiving body 30, for example, in the crushing member receptacle 76.
  • the grid portion 62 is positioned in the flow channel 48 and reduces its cross section.
  • the reduction of the cross-section of the flow channel 48 can be seen in FIG. 4D, in which the flow channel contour 94 is shown in dashed lines over the contour of the grid section 62.
  • Dry ice granules which is guided by means of compressed gas through the flow channel 48, can impact the bars 66 of the grid section 62 and thereby be comminuted.
  • the dry ice granules at the outlet 52 of the crusher 10 have an average size smaller than the average size of the dry ice granules at the inlet 50 of the crusher 10.
  • the ratio of the average size of dry ice granules at the inlet 50 to the average size at the outlet 52 will be referred to below Comminution degree called. If only one of the comminuting members 32, 34, 36, or 38 is arranged in the receiving body 30, the achievable degree of comminution referred to as Einzelzerklein ceremoniessgrad. By means of the comminuting member 32, therefore, a certain degree of single comminution can be achieved.
  • the second comminuting members 34, 36 and 38 are also arranged in the receiving body 30, the discs 54 and 58 being congruent with each other and the discs 56 and 60 being aligned congruent to one another. This corresponds to the combination of the disks 54, 56, 58 and 60 shown in FIG. 4C. Because of the differently configured grid sections 62 and 64, this makes it possible to reduce the cross-section of the flow channel 48 further than is possible with the first comminuting member 32 alone ,
  • Dry ice granules guided through the flow channel 48 can now also be comminuted by impact with the bars 68.
  • a With such a combination of the crushing members 32, 34, 36 and 38, aPolzerkleintationsgrad achievable, which is higher than the achievable alone with the first crushing member 32 Einzelzerklein ceremoniessgrad.
  • the discs 54, 56, 58 and 60 can rest against the groove bottom 86 both with the contact edge 72 and with the contact edge 74, they can be arranged in different ways, ie in different positions, in the comminuting member receptacles 76, 78, 80 and 82 .
  • a transfer of one of the comminuting members 32, 34, 36 or 38 from one position to another position is achieved by a rotation of the respective comminution member about the axis 18 or about a perpendicular to the axis 18 and to the groove bottom 18.
  • directed axis 96 possible.
  • the axle 96 is shown in Figure 2 as passing through the comminution member receiver 76. Since the comminutor holders 76, 78, 80, and 82 are identically formed, they may also be considered to pass through the comminutor holders 78, 80, and 82. The same applies to an axis 136 described below.
  • Figure 5 shows a plan view of the crusher 10, in which the reduction of the cross-sectional area of the flow channel 48 according to the combination shown in Figure 4A of the crushing members 32, 34, 36 and 38 can be seen.
  • the crusher member receivers 76, 78, 80 and 82 are spaced apart along the flow channel 48, the dry ice granules passed through the flow channel 48 are shredded at different levels. As a result, the risk is reduced that the grid sections 62 and 64 enforce in the operation of the crusher 10 with dry ice granules and thereby restrict its function. Due to the immobility of the crushing members 32, 34, 36 and 38 relative to the flow channel 48, the degree of comminution of dry ice granules during operation of the crusher 10 can be kept constant.
  • the shredder 10 may comprise a receiving body 100 shown in FIG. 6, which is configured substantially identical in design to the receiving body 30, for which reason equivalent components as those of the receiving body 30 are provided with the same reference numerals as in FIGS. 2 and 3.
  • the receiving body 100 comprises four identically designed comminuting member receptacles 76, 78, 80 and 82, which are each formed as a slot-shaped opening 102 of the receiving body 100.
  • the gap-shaped openings 102 are each perpendicular to the through hole 42 and thus aligned in the operation of the crusher 10 perpendicular to the flow channel 48, which they pass through. They each include a bottom wall 104 and a ceiling wall 106 extending parallel thereto, which are connected to one another via side walls 108 and 110.
  • comminuting members 112, 114, 116 and 118 shown in FIGS. 7A to 7D can be arranged in a form-fitting manner.
  • the comminuting member 112 is hereinafter referred to as the first comminution member, and the comminuting members 114, 116 and 118 are hereinafter referred to as second comminuting members.
  • the crushers 112, 114, 116 and 118 are formed as identical disks 120, 122, 124 and 126, respectively.
  • Each grid section 128 is bordered by an edge section 130 which, when viewed in a top view of the discs 120, 122, 124, 126, has the shape of a circular ring from which two diametrically opposed circular ring segments have been removed.
  • each disc 120, 122, 124 and 126 has two mutually parallel abutment edges 132 and 134.
  • the abutment edges 132 and 134 can rest on the bottom wall 104 and on the top wall 106, respectively.
  • the edge portion 130 may abut against the side walls 108 and 110, so that overall, as mentioned, the discs 120, 122, 124 and 126 are held in a form-fitting manner in the receiving body 120.
  • the operation of the crushing members 112, 114, 116 and 118 corresponds to the operation of the above-described crushing members 32, 34, 36 and 38:
  • the first comminuting member 112 is arranged in the receiving body 100, for example in the comminuting member receptacle 76.
  • the grating portion 128 is positioned in the flow channel 48, with the bars 129 reducing the cross section of the flow channel 48.
  • the reduction of the cross-section of the flow channel 48 can be seen in FIG. 7D, in which the flow channel contour 94 lies over the contour of the grid section 128 is drawn.
  • the second reducing elements 114, 116 and 118 are also arranged in the receiving body 100.
  • the crushing members 112, 114, 116 and 118 may occupy a plurality of layers in the crusher member receptacles 76, 78, 80 and 82 depending on whether the abutment edges 132 and 134 abut the bottom wall 104 or the top wall 106.
  • the crushing members 112, 114, 116 and 118 may be viewed as rotating about the axis 18 about the axis 96, which is presently oriented perpendicular to the bottom wall 104, and about an axis 136 oriented perpendicular to the axes 18 and 96 be transferred to another position (see Figures 2 and 6).
  • the grating portion 128 is formed in the receiving body 100 is asymmetrical to the axis 18 in the arrangement of the comminuting members 112, 114, 116 and 118. Therefore, it is possible by means of two crushing members, for example by means of the crushing members 112 and 114, to achieve four total degrees of comminution by their relative arrangement (not shown in the drawing). Of these, three total degrees of comminution are greater than the single degree of reduction achievable with only the first comminution member 112, because the grating portions 128, viewed along the flow channel 48, can assume a crossed position relative to one another.
  • the invention also relates to a dry ice dispensing arrangement, of which a preferred embodiment is shown schematically in FIG. 8 and designated by the reference numeral 140.
  • the dry ice dispensing arrangement 140 comprises a dry ice blasting device 142, which can be connected via a pressure line 144 to a compressed gas source not shown in the drawing.
  • the dry ice blasting machine 142 has a storage container 146 for dry ice granules, which can be mixed by a metering device 148 with the pressure gas guided through the pressure line 144.
  • the mixture of pressurized gas and dry ice granules may be supplied to a dry ice dispenser 150 in the form of a blasting gun 152 enclosed by the dry ice dispensing assembly via a supply line 154.
  • an actuating lever 156 of the blasting gun 152 By actuating an actuating lever 156 of the blasting gun 152, a surface to be cleaned can be charged with the mixture of dry ice granules and press
  • the above-described comminutor 10 is also included in the dry ice dispensing assembly 140 and is detachably connectable to the blasting gun 152 by screwing.
  • An outlet 158 of the blasting gun 152 for this purpose comprises an external thread not shown in the drawing, which can cooperate with the already mentioned internal thread on the first sleeve end 20 of the sleeve 14.
  • a user can reduce the size of the dry ice granules provided by the dry ice blasting apparatus 142 as described above. Due to the different possibilities of arranging the size reduction elements 32, 34, 36 and 38, 112, 114, 116 and 118 in the receiving bodies 30 and 100, a plurality of total degrees of comminution of dry ice granules can be achieved, so that the dry ice dispensing arrangement 140 can be used in a variety of ways ,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Cleaning In General (AREA)

Abstract

The invention relates to a device for comminuting dry ice granules, comprising a housing having a flow channel for dry ice granules which can be applied, by means of compressed gas, to a surface to be cleaned, and also comprising a first comminution member for comminuting the dry ice granules which are to be dispensed. In order to provide a device of this kind with which different degrees of comminution of dry ice granules can be achieved in a simple manner, it is proposed according to the invention that the device has at least one second comminution member which can be disposed in the housing in a position in which a total degree of comminution, which is greater than the individual degree of comminution which can be achieved solely by the first comminution member, can be achieved in combination with the first comminution member. A dry ice dispensing arrangement for dispensing a mixture of compressed gas and dry ice granules is also proposed, having a device of the above kind.

Description

Vorrichtung zum Zerkleinern von Trockeneϊsgranulat und Trockeneϊsabgabeanordnung mit einer derartigen Vorrichtung Apparatus for comminuting dry granules and dry dispensing arrangement with such a device
Die Erfindung betrifft eine Vorrichtung zum Zerkleinern von Trockeneisgranulat, umfassend ein Gehäuse mit einem Strömungskanal für mittels Druckgas auf eine zu reinigende Fläche aufbringbares Trockeneisgranulat sowie ein erstes Zerkleinerungsglied zum Zerkleinern des abzugebenden Trockeneisgranulates.The invention relates to a device for comminuting dry ice granules, comprising a housing with a flow channel for dry ice granules which can be applied to a surface to be cleaned by means of compressed gas and a first comminution element for comminuting the dry ice granules to be dispensed.
Darüber hinaus betrifft die Erfindung eine Trockeneisabgabeanordnung zum Abgeben eines Gemisches aus Druckgas und Trockeneisgranulat mit einer derartigen Vorrichtung.Moreover, the invention relates to a dry ice dispensing assembly for dispensing a mixture of compressed gas and dry ice granules with such a device.
Aus der DE 10 2004 045 770 B3 ist eine Trockeneisstrahlvorrichtung bekannt zum Bereitstellen eines Gemisches aus Druckgas, vorzugsweise Druckluft, und Trockeneis. Zum Zuführen des Druckgases ist die Trockeneisstrahlvorrichtung an eine Druckgasquelle anschließbar. Die Trockeneisstrahlvorrichtung umfasst einen Vorrat von Trockeneis sowie eine Dosiereinrichtung, mit der das Trockeneis dem Druckgas beigemischt werden kann. Das Trockeneis wird in Form von Trockeneisgranulat (sogenannte "Pellets"), das üblicherweise die Größe von Reiskörnern aufweist, bevorratet und mittels der Dosiereinrichtung in den Strömungsweg des Druckgases eingebracht, so dass es sich mit dem Druckgas vermischt. Mittels eines an die Trockeneisstrahlvorrichtung anschließbaren Trockeneisabgabegerätes kann zum Beispiel eine zu reinigende Fläche mit unter Druck gesetztem Trockeneisgranulat beaufschlagt werden. An der Fläche anhaftende Verunreinigungen werden durch die Beaufschlagung mit Trockeneisgranulat stark abgekühlt, so dass sie verspröden und von der Fläche abgelöst werden. Das auf die Fläche auftreffende Trockeneisgranulat subli- miert beim Auftreffen, d. h. es geht direkt von der festen in die gasförmige Phase über, und unterstützt dabei das Ablösen von an der Fläche anhaftenden Verunreinigungen.From DE 10 2004 045 770 B3 a dry ice blasting apparatus is known for providing a mixture of compressed gas, preferably compressed air, and dry ice. For supplying the compressed gas, the dry ice blasting device can be connected to a compressed gas source. The dry ice blasting device comprises a supply of dry ice and a metering device with which the dry ice can be admixed with the compressed gas. The dry ice is stored in the form of dry ice granules (so-called "pellets"), which usually has the size of rice grains, and introduced by means of the metering device in the flow path of the compressed gas, so that it mixes with the compressed gas. By means of a dry ice dispensing device which can be connected to the dry ice blasting device, for example, a surface to be cleaned can be subjected to pressurized dry ice granules. Contaminants adhering to the surface are formed by the application of Dry ice granules strongly cooled so that they become brittle and detached from the surface. The dry ice pellets impacting the surface sublimate on impact, ie it passes directly from the solid to the gaseous phase, assisting in the removal of impurities attached to the surface.
Die eingangs genannten Vorrichtungen zum Zerkleinern von Trockeneisgranulat (sogenannte "Scrambler") werden üblicherweise als Zusatzgeräte zu Trockeneisabgabeanordnungen angeboten. Zum Zerkleinern von Trockeneisgranulat umfassen sie einen Strömungskanal, der von dem Gemisch aus Druckgas und Trockeneisgranulat durchströmt wird und an dem ein Zerkleinerungsglied angeordnet ist. Prallt das mit Druckgas vermischte Trockeneisgranulat auf das Zerkleinerungsglied, kann es zerbrechen und dadurch zerkleinert werden. Infolgedessen weisen die zerkleinerten Pellets ausgangsseitig der Vorrichtung eine geringere Durchschnittsgröße auf als eingangsseitig der Vorrichtung. Das auf diese Weise zerkleinerte Trockeneisgranulat eignet sich zum Beispiel bevorzugt zur Reinigung empfindlicher Oberflächen, feiner Strukturen oder Hinterschneidungen.The devices mentioned at the beginning for the comminution of dry ice granules (so-called "scramblers") are usually offered as accessories to dry ice dispensing arrangements. For comminuting dry ice granules, they comprise a flow channel through which the mixture of compressed gas and dry ice granules flows and on which a comminution element is arranged. If the dry ice granules mixed with compressed gas collide with the comminution element, it can break and be crushed as a result. As a result, the comminuted pellets on the output side of the device have a smaller average size than the input side of the device. For example, the dry ice granules comminuted in this way are preferably suitable for cleaning sensitive surfaces, fine structures or undercuts.
Es sind gattungsgemäße Vorrichtungen zum Zerkleinern von Trockeneisgranulat bekannt, bei denen das Gehäuse ein den Strömungskanal einfassendes Rohr umfasst, in das ein Zerkleinerungsglied in Form eines Metalldrahtes eingeschweißt ist. Dies ist herstellungstechnisch aufwändig, und darüber hinaus unterliegt der Draht einer hohen Abnutzung. Bei andersartigen gattungsgemäßen Vorrichtungen zum Zerkleinern von Trockeneisgranulat ist das Zerkleinerungsglied als Gittergeflecht ausgebildet und in ein von dem Gehäuse umfasstes Rohr eingesetzt. Bei derartigen Vorrichtungen besteht die Gefahr, dass sich das Gittergeflecht während des Betriebes mit Trockeneisgranulat zusetzt, so dass der Strömungskanal blockiert wird.There are generic devices for crushing dry ice granules are known in which the housing comprises a pipe enclosing the flow channel, in which a crushing member is welded in the form of a metal wire. This is manufacturing technically complex, and moreover, the wire is subject to high wear. In other generic devices for crushing dry ice granules, the crushing member is formed as a mesh and inserted into a tube enclosed by the housing. In such devices, there is a risk that the grid mesh is added during operation with dry ice granules, so that the flow channel is blocked.
Bei beiden vorstehend beschriebenen Vorrichtungen zum Zerkleinern von Trockeneisgranulat besteht darüber hinaus das Problem, dass der Zerkleinerungsgrad von Trockeneisgranulat, d. h. das Verhältnis der durchschnittlichen Größe der Pellets eingangsseitig der Vorrichtung zur durchschnittlichen Größe der Pellets ausgangsseitig der Vorrichtung, unveränderlich ist.Moreover, in both of the above-described dry ice granulation apparatuses, there is a problem that the degree of crushing of dry ice granules, that is, the granulation of dry ice granules. H. the ratio of the average size of the pellets on the input side of the device to the average size of the pellets on the output side of the device is fixed.
Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung der eingangs genannten Art bereitzustellen, mit der auf einfache Weise unterschiedliche Zerkleinerungsgrade von Trockeneisgranulat erzielbar sind.Object of the present invention is to provide a device of the type mentioned, with the different degrees of comminution of dry ice granules can be achieved in a simple manner.
Diese Aufgabe wird bei einer gattungsgemäßen Vorrichtung erfindungsgemäß dadurch gelöst, dass die Vorrichtung mindestens ein zweites Zerkleinerungsglied aufweist, das im Gehäuse in einer Lage anordenbar ist, bei der in Kombination mit dem ersten Zerkleinerungsglied ein Gesamtzerkleinerungsgrad erzielbar ist, der größer ist als der allein mit dem ersten Zerkleinerungsglied erzielbare Einzelzerkleinerungsgrad.This object is achieved in a generic device according to the invention in that the device has at least one second crushing member which can be arranged in the housing in a position in which in combination with the first crushing element a Gesamtzerkleinerungsgrad is achieved, which is greater than that alone with the first crusher achievable Einzelzerkleinerungsgrad.
Als "Lage" wird vorliegend eine räumliche Anordnung des mindestens einen zweiten Zerkleinerungsgliedes im Gehäuse oder eines Teiles desselben relativ zum ersten Zerkleinerungsglied angesehen. Das mindestens eine zweite Zerkleinerungsglied kann im Gehäuse eine Lage einnehmen, bei welcher der Ge- samtzerkleinerungsgrad, d. h. der Zerkleinerungsgrad des Trockeneisgranulates nach Passieren beider Zerkleinerungsglieder, größer ist als der allein mit dem ersten Zerkleinerungsglied erzielbare Einzelzerkleinerungsgrad. Darüber hinaus kann das mindestens eine zweite Zerkleinerungsglied dem Gehäuse entnommen werden. Dies erlaubt es, mit der Vorrichtung auch den allein mit dem ersten Zerkleinerungsglied erzielbaren Einzelzerkleinerungsgrad zu erzielen. Mittels der erfindungsgemäßen Vorrichtung ist daher die Möglichkeit gegeben, durch wahlweisen Einsatz des mindestens einen zweiten Zerkleinerungsgliedes auf technisch einfache Weise mindestens zwei Zerkleinerungsgrade von Trockeneisgranulat zu erzielen.In the present case, a "spatial position" of the at least one second comminution element in the housing or a part thereof is relatively "spatial" considered to the first crushing member. The at least one second comminution element can assume a position in the housing in which the overall comminution level, ie the degree of comminution of the dry ice granulate after passing through both comminution elements, is greater than the single comminution rate that can be achieved with the first comminution element alone. In addition, the at least one second crushing member can be removed from the housing. This makes it possible to achieve with the device also achievable alone with the first crushing Einzelzerkleinerungsgrad. By means of the device according to the invention is therefore given the opportunity to achieve by selectively using the at least one second crushing member in a technically simple manner, at least two degrees of comminution of dry ice granules.
Insbesondere kann vorgesehen sein, dass auch das erste Zerkleinerungsglied dem Gehäuse entnehmbar ist, so dass nur das mindestens eine zweite Zerkleinerungsglied im Gehäuse angeordnet sein kann. Dadurch kann die Möglichkeit gegeben sein, mittels des mindestens einen zweiten Zerkleinerungsgliedes allein einen Einzelzerkleinerungsgrad zu erzielen, der sich von dem allein mit dem ersten Zerkleinerungsglied erzielbaren Einzelzerkleinerungsgrad unterscheidet. Dies ist beispielsweise dann der Fall, wenn das erste Zerkleinerungsglied und das mindestens eine zweite Zerkleinerungsglied unterschiedlich ausgestaltet sind. Bei einer derartigen Ausführungsform sind also durch wahlweisen Einsatz des ersten Zerkleinerungsgliedes und/oder des mindestens einen zweiten Zerkleinerungsgliedes insgesamt mindestens drei Zerkleinerungsgrade von Trockeneisgranulat erzielbar. Bevorzugt ist das mindestens eine zweite Zerkleinerungsglied im Gehäuse in einer Lage anordenbar, bei der der Gesamtzerkleinerungsgrad gleich groß ist wie der allein mit dem ersten Zerkleinerungsglied erzielbare Einzelzerkleinerungsgrad. Dadurch ist es nicht erforderlich, das mindestens eine zweite Zerkleinerungsglied dem Gehäuse zu entnehmen, um den auch allein mit dem ersten Zerkleinerungsglied erzielbaren Einzelzerkleinerungsgrad zu erzielen. Statt dessen kann das mindestens eine zweite Zerkleinerungsglied im Gehäuse verbleiben. Dadurch ist zum Beispiel die Gefahr verringerbar, dass das mindestens eine zweite Zerkleinerungsglied verlorengeht.In particular, it can be provided that the first crushing member can be removed from the housing, so that only the at least one second crushing member can be arranged in the housing. As a result, the possibility can be given of achieving, by means of the at least one second comminuting member alone, a single degree of comminution which differs from the single comminution degree which can be achieved only with the first comminuting member. This is for example the case when the first crushing member and the at least one second crushing member are configured differently. In such an embodiment, a total of at least three degrees of comminution of dry ice granules can thus be achieved by optional use of the first comminuting member and / or the at least one second comminuting member. Preferably, the at least one second crushing member can be arranged in the housing in a position in which the total degree of comminution is the same as that achievable with the first comminution element Einzelzerkleinerungsgrad. As a result, it is not necessary to remove the at least one second reducing element from the housing in order to achieve the single degree of reduction that can be achieved even with the first reducing element alone. Instead, the at least one second crushing member may remain in the housing. As a result, for example, the risk can be reduced that the at least one second comminuting member is lost.
Von Vorteil ist es, wenn das mindestens eine zweite Zerkleinerungsglied im Gehäuse in einer Mehrzahl von Lagen anordenbar ist, bei denen der Gesamtzerkleinerungsgrad größer ist als der allein mit dem ersten Zerkleinerungsglied erzielbare Einzelzerkleinerungsgrad. Dies erleichtert einem Benutzer die Handhabung der Vorrichtung.It is advantageous if the at least one second comminution element can be arranged in the housing in a plurality of layers, in which the overall comminution rate is greater than the single comminution rate achievable alone with the first comminution element. This facilitates a user's handling of the device.
Vorzugsweise ist der Gesamtzerkleinerungsgrad in jeder der Mehrzahl von Lagen des mindestens einen zweiten Zerkleinerungsgliedes im Gehäuse unterschiedlich groß. Dadurch ist die Vorrichtung vielseitig einsetzbar, denn mittels des ersten Zerkleinerungsgliedes und des mindestens einen zweiten Zerkleinerungsgliedes kann eine Mehrzahl unterschiedlicher Gesamtzerkleinerungs- grade von Trockeneisgranulat erzielt werden.Preferably, the Gesamtzerkleinerungsgrad in each of the plurality of layers of the at least one second crushing member in the housing of different sizes. As a result, the device can be used in many ways, because by means of the first comminution member and the at least one second comminuting member, a plurality of different total comminution levels of dry ice granules can be achieved.
Günstig ist es, wenn die Vorrichtung mindestens ein zweites Zerkleinerungsglied aufweist, das identisch zum ersten Zerkleinerungsglied ausgebildet ist. Durch die identische Ausbildung lassen sich die Herstellungskosten für die Vorrichtung verringern. Wenn zwei oder mehr zweite Zerkleinerungsglieder vorhanden sind, kann insbesondere vorgesehen sein, dass alle zweiten Zerkleinerungsglieder identisch zum ersten Zerkleinerungsglied ausgebildet sind.It is favorable if the device has at least one second comminuting member which is identical to the first comminuting member. Due to the identical design, the production costs for the Reduce device. If two or more second comminuting members are present, it can be provided, in particular, that all second comminuting members are identical to the first comminuting member.
Bevorzugt weist die Vorrichtung mindestens ein zweites Zerkleinerungsglied auf, das unterschiedlich zum ersten Zerkleinerungsglied ausgebildet ist. Durch eine unterschiedliche Ausbildung lassen sich beispielsweise mit dem ersten Zerkleinerungsglied und dem mindestens einen zweiten Zerkleinerungsglied jeweils unterschiedliche Einzelzerkleinerungsgrade erzielen, zwischen denen der Benutzer zusätzlich zu dem Gesamtzerkleinerungsgrad auswählen kann. Eine derartige Ausführungsform weist daher eine hohe Vielseitigkeit auf. Sind zwei oder mehr zweite Zerkleinerungsglieder vorhanden, kann vorgesehen sein, dass alle zweiten Zerkleinerungsglieder unterschiedlich zum ersten Zerkleinerungsglied ausgebildet sind.Preferably, the device has at least one second comminuting member, which is designed differently from the first comminuting member. By a different design can be achieved, for example, with the first crushing member and the at least one second crushing member each different Einzelzerkleinerungsgrade between which the user can select in addition to the total degree of comminution. Such an embodiment therefore has a high versatility. If there are two or more second comminuting members, it can be provided that all second comminuting members are designed differently from the first comminuting member.
Bevorzugt umfasst das erste und/oder das mindestens eine zweite Zerkleinerungsglied zur Zerkleinerung von Trockeneisgranulat einen Gitterabschnitt, der im Strömungskanal positionierbar ist. Mittels des Gitterabschnittes ist es möglich, den Querschnitt des Strömungskanals zu verringern. Das mittels Druckgas durch den Strömungskanal geführte Trockeneisgranulat kann auf den Gitterabschnitt aufprallen, zerbrechen und dadurch zerkleinert werden.Preferably, the first and / or the at least one second comminuting member for comminuting dry ice granules comprises a grid section which can be positioned in the flow channel. By means of the grid section, it is possible to reduce the cross section of the flow channel. The guided by compressed gas through the flow channel dry ice granules can impact the grid section, break and thereby crushed.
Vorteilhafterweise ist das mindestens eine zweite Zerkleinerungsglied durch eine Drehung seines Gitterabschnittes relativ zum Gitterabschnitt des ersten Zerkleinerungsgliedes in unterschiedliche Lagen überführbar, bei denen unterschiedliche Gesamtzerkleinerungsgrade erzielbar sind. Hierbei handelt es sich um eine konstruktiv einfache Möglichkeit, mit dem ersten und dem mindestens einen zweiten Zerkleinerungsglied unterschiedliche Gesamtzerkleinerungs- grade zu erzielen. Es kann dabei vorgesehen sein, dass die Drehung des Gitterabschnittes des mindestens einen zweiten Zerkleinerungsgliedes um eine Achse des Strömungskanals erfolgt. Es ist aber auch möglich, dass der Gitterabschnitt des mindestens einen zweiten Zerkleinerungsgliedes um eine quer zur Achse des Strömungskanals ausgerichtete Achse zu verdrehen ist. Die Drehung kann zum Beispiel um vorgebbare Winkel erfolgen, es kann allerdings auch vorgesehen sein, dass der Drehwinkel stufenlos einstellbar ist. Der Gitterabschnitt kann unabhängig von den restlichen Abschnitten des mindestens einen zweiten Zerkleinerungsgliedes und relativ zu diesen drehbar sein.Advantageously, the at least one second comminution element can be converted into different positions by rotation of its grating section relative to the grating section of the first comminuting element, in which different total degrees of comminution can be achieved. This is it to a structurally simple way to achieve different Gesamtzerkleinerungsgrade with the first and the at least one second crushing member. It may be provided that the rotation of the grating portion of the at least one second crushing member takes place about an axis of the flow channel. But it is also possible that the grid portion of the at least one second crushing member is to be rotated about an axis oriented transversely to the axis of the flow channel. The rotation can be done, for example, by predeterminable angle, but it can also be provided that the rotation angle is infinitely adjustable. The grid section may be independent of the remaining sections of the at least one second reducing member and be rotatable relative thereto.
Vorzugsweise weist das erste und/oder das mindestens eine zweite Zerkleinerungsglied einen Randabschnitt auf, mit dem das erste und/oder das mindestens eine zweite Zerkleinerungsglied am Gehäuse abstützbar ist. Durch die Abstützung am Gehäuse kann sichergestellt werden, dass das erste und/oder das mindestens eine zweite Zerkleinerungsglied relativ zum Strömungskanal unbeweglich ist. Die mechanische Stabilität der Vorrichtung kann dadurch verbessert werden.Preferably, the first and / or the at least one second comminution member has an edge portion with which the first and / or the at least one second comminution member can be supported on the housing. By supporting on the housing can be ensured that the first and / or the at least one second crushing member is immobile relative to the flow channel. The mechanical stability of the device can be improved.
Der Randabschnitt des ersten und/oder des mindestens einen zweiten Zerkleinerungsgliedes fasst vorzugsweise zumindest teilweise einen im Strömungskanal positionierbaren Gitterabschnitt des ersten und/oder des mindestens einen zweiten Zerkleinerungsgliedes ein. Bei einer konstruktiv einfachen Ausgestaltung ist das erste und/oder das mindestens eine zweite Zerkleinerungsglied scheibenförmig ausgebildet. Die Scheibe kann zum Beispiel einen Gitterabschnitt aufweisen, der zumindest teilweise von einem Randabschnitt eingefasst wird.The edge section of the first and / or of the at least one second comminution element preferably at least partially encloses a grid section of the first and / or at least one second comminution section which can be positioned in the flow channel. In a structurally simple embodiment, the first and / or the at least one second crushing member is disc-shaped. The disc may, for example, have a grid section that is at least partially enclosed by a rim section.
Vorteilhafterweise sind das erste und das mindestens eine zweite Zerkleinerungsglied, wenn sie im Gehäuse angeordnet sind, längs des Strömungskanals voneinander beabstandet. Dies gibt die Möglichkeit, durch den Strömungskanal strömendes Trockeneisgranulat zunächst mit dem ersten Zerkleinerungsglied und anschließend mit dem davon beabstandeten mindestens einen zweiten Zerkleinerungsglied zu zerkleinern. Das Zerkleinern des Trockeneisgranulates kann daher zum Beispiel in zwei voneinander beabstandeten Ebenen erfolgen. Dies verringert die Gefahr, dass sich das erste und/oder das zweite Zerkleinerungsglied im Betrieb der Vorrichtung mit Trockeneis zusetzt.Advantageously, the first and the at least one second crushing member, when disposed in the housing, are spaced apart along the flow channel. This makes it possible to crush dry ice granules flowing through the flow channel firstly with the first comminution element and then with the at least one second comminution element spaced therefrom. The comminution of the dry ice granules can therefore be carried out, for example, in two spaced-apart planes. This reduces the risk that the first and / or the second crushing member is added during operation of the device with dry ice.
Bei Vorhandensein von zwei oder mehr zweiten Zerkleinerungsgliedern ist es aus demselben Grund von Vorteil, wenn alle zweiten Zerkleinerungsglieder längs des Strömungskanals voneinander beabstandet sind.In the presence of two or more second comminution members, it is advantageous for the same reason that all the second comminution members are spaced apart along the flow channel.
Günstig ist es, wenn das Gehäuse einen Aufnahmekörper mit mindestens einer Zerkleinerungsgliedaufnahme für das erste und/oder das mindestens eine zweite Zerkleinerungsglied aufweist. In der mindestens einen Zerkleinerungsgliedaufnahme kann das erste und/oder das mindestens eine zweite Zerkleinerungsglied beispielsweise unbeweglich gehalten sein. Es kann vorgesehen sein, dass das erste und/oder das mindestens eine zweite Zerkleinerungsglied in der mindestens einen Zerkleinerungsgliedaufnahme in verschiedenerlei La- gen anordenbar ist. Insbesondere kann in jeder der verschiedenerlei Lagen ein jeweils unterschiedlicher Gesamtzerkleinerungsgrad erzielbar sein.It is advantageous if the housing has a receiving body with at least one comminuting member receptacle for the first and / or the at least one second comminuting member. In the at least one comminution member receiving the first and / or the at least one second crushing member may for example be held immobile. It can be provided that the first and / or the at least one second comminuting member in the at least one comminuting member receptacle can be conveyed in various ways. gen is arranged. In particular, in each of the various layers a respective different total degree of comminution can be achieved.
Bevorzugt ist das erste und/oder das mindestens eine zweite Zerkleinerungsglied in der mindestens einen Zerkleinerungsgliedaufnahme relativ zum Strömungskanal unbeweglich anordenbar.Preferably, the first and / or the at least one second comminuting member can be arranged immovably in the at least one comminuting member receptacle relative to the flow channel.
Von Vorteil ist es, wenn die mindestens eine Zerkleinerungsgliedaufnahme eine Anlegefläche für das erste und/oder das mindestens eine zweite Zerkleinerungsglied aufweist, an der dieses anlegbar und relativ zum Strömungskanal ausrichtbar ist. Dies vereinfacht einem Benutzer die Handhabung der Vorrichtung. Beim Anordnen des ersten und/oder des mindestens einen zweiten Zerkleinerungsgliedes in der mindestens einen Zerkleinerungsgliedaufnahme wird die Ausrichtung desselben relativ zum Strömungskanal vereinfacht. Dadurch kann sichergestellt werden, dass sich das erste und/oder das mindestens eine zweite Zerkleinerungsglied im Betrieb der Vorrichtung in der korrekten Position befindet.It is advantageous if the at least one comminuting member receptacle has a contact surface for the first and / or the at least one second comminuting member, on which this can be placed and aligned relative to the flow channel. This simplifies a user's handling of the device. When arranging the first and / or the at least one second comminuting member in the at least one comminuting member receptacle, the alignment thereof is simplified relative to the flow channel. This can ensure that the first and / or the at least one second comminuting member is in the correct position during operation of the device.
Bei einer konstruktiv einfachen Ausgestaltung ist der Aufnahmekörper als den Strömungskanal zumindest entlang eines Teilabschnitts einfassender Hohlkörper ausgebildet, beispielsweise als Hohlzylinder, längs dessen Achse der Strömungskanal verläuft.In a structurally simple embodiment of the receiving body is formed as the flow channel at least along a portion of enclosing hollow body, for example as a hollow cylinder, along the axis of the flow channel runs.
Eine konstruktiv einfache Ausgestaltung der mindestens einen Zerkleinerungsgliedaufnahme kann dadurch erzielt werden, dass sie als quer zum Strömungskanal orientierte nutförmige Ausnehmung ausgebildet ist. In der nut- förmigen Ausnehrπung kann das erste und/oder das mindestens eine zweite Zerkleinerungsglied, welches vorteilhafterweise scheibenförmig ausgebildet ist, angeordnet und relativ zum Strömungskanal ausgerichtet werden.A structurally simple embodiment of the at least one comminuting member receptacle can be achieved in that it is designed as a groove-shaped recess oriented transversely to the flow channel. In the nut- shaped Ausnehrπung the first and / or the at least one second crushing member, which is advantageously disc-shaped, arranged and aligned relative to the flow channel.
Alternativ kann die mindestens eine Zerkleinerungsgliedaufnahme als quer zum Strömungskanal orientierte spaltförmige Durchbrechung ausgebildet sein.Alternatively, the at least one comminution member receptacle can be formed as a slot-shaped opening oriented transversely to the flow channel.
Bevorzugt weist das Gehäuse eine Hülse auf, die den Aufnahmekörper umgibt. Dies ermöglicht es, der Vorrichtung eine kompakte Bauform zu verleihen.Preferably, the housing has a sleeve which surrounds the receiving body. This makes it possible to give the device a compact design.
Günstig ist es, wenn der Aufnahmekörper relativ zum Strömungskanal unbeweglich fixierbar ist. Dadurch ist zum Beispiel die Möglichkeit gegeben, das im Aufnahmekörper angeordnete erste und/oder mindestens eine zweite Zerkleinerungsglied relativ zum Strömungskanal unbeweglich zu fixieren. Dadurch kann eine zuverlässige Funktion der Vorrichtung gewährleistet werden. Eine unbewegliche Fixierung des Aufnahmekörpers relativ zum Strömungskanal kann beispielsweise dadurch erreicht werden, dass der Aufnahmekörper formschlüssig in der vorstehend beschriebenen Hülse anordenbar ist.It is favorable if the receiving body can be fixed immovably relative to the flow channel. As a result, for example, there is the possibility of immovably fixing the first and / or at least one second comminuting member arranged in the receiving body relative to the flow channel. Thereby, a reliable operation of the device can be ensured. An immovable fixation of the receiving body relative to the flow channel can be achieved, for example, in that the receiving body can be arranged in a form-fitting manner in the sleeve described above.
Von Vorteil ist es, wenn das Gehäuse mindestens einen mit der Hülse lösbar verbindbaren Gehäusedeckel aufweist. Mittels des Deckels kann die Hülse verschlossen werden, so dass der Aufnahmekörper mit dem gegebenenfalls darin aufgenommenen ersten und/oder mindestens einen zweiten Zerkleinerungsglied sicher in der Hülse gehalten ist. Zum Entnehmen des ersten und/oder mindestens einen zweiten Zerkleinerungsgliedes aus dem Gehäuse oder zur Änderung von dessen Lage im Gehäuse kann der Deckel von der Hülse gelöst werden, um den Aufnahmekörper aus der Hülse zu entnehmen. Für eine besonders einfache Handhabung ist der Deckel mit der Hülse verschraubbar.It is advantageous if the housing has at least one housing cover detachably connectable to the sleeve. By means of the lid, the sleeve can be closed, so that the receiving body is securely held in the sleeve with the optionally received therein first and / or at least one second crushing member. To remove the first and / or at least one second crushing member from the housing or to change its position in the housing, the lid can be detached from the sleeve to remove the receiving body from the sleeve. For a particularly simple handling of the lid with the sleeve can be screwed.
Wie eingangs erwähnt, betrifft die Erfindung auch eine Trockeneisabgabeanordnung zum Abgeben eines Gemisches aus Druckgas und Trockeneisgranulat. Aufgabe der vorliegenden Erfindung ist es, eine derartige Trockeneisabgabeanordnung weiterzubilden, so dass mit ihr auf technisch einfache Weise Trockeneisgranulat mit unterschiedlichem Zerkleinerungsgrad abgebbar ist.As mentioned above, the invention also relates to a dry ice dispensing arrangement for dispensing a mixture of compressed gas and dry ice granules. The object of the present invention is to further develop such a dry ice dispensing arrangement so that dry ice granules with a different degree of comminution can be dispensed therewith in a technically simple manner.
Diese Aufgabe wird bei einer gattungsgemäßen Trockeneisabgabeanordnung erfindungsgemäß dadurch gelöst, dass die Trockeneisabgabeanordnung mindestens eine Vorrichtung zum Zerkleinern von Trockeneisgranulat umfasst, wie sie voranstehend beschrieben ist.This object is achieved in a generic dry ice dispensing arrangement according to the invention in that the dry ice dispensing arrangement comprises at least one device for comminuting dry ice granules, as described above.
Die erfindungsgemäße Trockeneisabgabeanordnung weist dann die bereits im Zusammenhang mit der Erläuterung der Vorrichtung beschriebenen Vorteile auf.The dry ice dispensing arrangement according to the invention then has the advantages already described in connection with the explanation of the device.
Die Trockeneisabgabeanordnung kann beispielsweise als Trockeneisstrahlvorrichtung oder auch als an eine Trockeneisstrahlvorrichtung anschließbares Trockeneisabgabegerät ausgestaltet sein. Letzteres kann zum Beispiel in Form einer Strahlpistole ausgestaltet sein. Es kann vorgesehen sein, dass die erfindungsgemäße Vorrichtung zum Zerkleinern von Trockeneisgranulat in oder an der Trockeneisstrahlvorrichtung und/oder in oder an dem Trockeneisabgabegerät angeordnet ist. Vorzugsweise ist die erfindungsgemäße Zerkleinerungsvorrichtung zur vereinfachten Handhabung lösbar mit der Trockeneisstrahlvor- richtung oder dem Trockeneisabgabegerät verbindbar, zum Beispiel durch Ver- schraubung.The dry ice dispensing arrangement can be designed, for example, as a dry ice blasting device or else as a dry ice dispensing device that can be connected to a dry ice blasting device. The latter can be configured for example in the form of a blasting gun. It can be provided that the device according to the invention for crushing dry ice granules is arranged in or on the dry ice blasting device and / or in or on the dry ice dispensing device. Preferably, the shredding device according to the invention for ease of handling is solvable with the Trockeneisstrahlvor- direction or the dry ice dispenser connectable, for example by screwing.
Die nachfolgende Beschreibung bevorzugter Ausführungsformen dient im Zusammenhang mit der Zeichnung der näheren Erläuterung der Erfindung. Es zeigen :The following description of preferred embodiments is used in conjunction with the drawings for a more detailed explanation of the invention. Show it :
Figur 1 : eine perspektivische Darstellung einer erfindungsgemäßenFigure 1: a perspective view of an inventive
Vorrichtung zum Zerkleinern von Trockeneisgranulat;Apparatus for comminuting dry ice granules;
Figur 2: eine Explosionsdarstellung der Vorrichtung aus Figur 1;Figure 2 is an exploded view of the device of Figure 1;
Figur 3: eine Schnittansicht längs der Linie 3-3 in Figur 1;Figure 3 is a sectional view taken along the line 3-3 in Figure 1;
Figur 4A, 4B, 4C: beispielhafte Möglichkeiten der Kombination von Zerkleinerungsgliedern der Vorrichtung aus Figur 1 gemäß einer ersten Ausführungsform zum Erzielen unterschiedlicher Ge- samtzerkleinerungsgrade;FIGS. 4A, 4B, 4C show exemplary possibilities of combining comminution elements of the device from FIG. 1 according to a first embodiment for achieving different overall comminution levels;
Figur 4D: eine Ansicht ähnlich den Figuren 4A bis 4C mit nur einemFigure 4D is a view similar to Figures 4A to 4C with only one
Zerkleinerungsglied;Comminution member;
Figur 5: eine Ansicht auf die Vorrichtung aus Figur 1 in Richtung desFIG. 5 shows a view of the device from FIG. 1 in the direction of the FIG
Pfeiles "5" in Figur 1; Figur 6: einen Aufnahmekörper für Zerkleinerungsglieder der Vorrichtung aus Figur 1;Arrow "5" in Figure 1; FIG. 6 shows a receiving body for comminution elements of the device from FIG. 1;
Figur 7A, 7B, 7C: beispielhafte Möglichkeiten der Kombination von Zerkleinerungsgliedern der Vorrichtung aus Figur 1 gemäß einer zweiten Ausführungsform zum Erzielen unterschiedlicher Gesamtzerkleinerungsgrade;FIGS. 7A, 7B, 7C show exemplary possibilities of combining comminution elements of the device from FIG. 1 according to a second embodiment for achieving different overall comminution levels;
Figur 7D: eine Ansicht ähnlich den Figuren 7A bis 7C mit nur einemFIG. 7D: a view similar to FIGS. 7A to 7C with only one
Zerkleinerungsglied undCrusher and
Figur 8: eine schematische Ansicht einer erfindungsgemäßenFigure 8: a schematic view of an inventive
Trockeneisabgabeanordnung.Dry ice dispensing arrangement.
In der Zeichnung ist eine bevorzugte Ausführungsform einer erfindungsgemäßen Vorrichtung zum Zerkleinern von Trockeneisgranulat, die im Folgenden als "Zerkleinerer" bezeichnet wird, mit dem Bezugszeichen 10 belegt. Der Zerkleinerer 10 kann Bestandteil einer erfindungsgemäßen Trockeneisabgabeanordnung sein, wie sie in Figur 8 dargestellt ist.In the drawing, a preferred embodiment of a device according to the invention for the comminution of dry ice granules, which is referred to below as "crusher", occupied by the reference numeral 10. The crusher 10 may be part of a dry ice dispensing arrangement according to the invention, as shown in FIG.
Wie insbesondere aus den Figuren 1 bis 3 deutlich wird, weist der Zerkleinerer 10 ein Gehäuse 12 mit einer Hülse 14 und einem mit der Hülse 14 lösbar verbindbaren Gehäusedeckel 16 auf, der ebenfalls hülsenförmig ausgebildet ist. Die Hülse 14 und der Gehäusedeckel 16 weisen eine gemeinsame Achse 18 auf, um die sie im Wesentlichen rotationssymmetrisch ausgebildet sind. An ihrem ersten Hülsenende 20, das dem Gehäusedeckel 16 abgewandt ist, weist die Hülse 14 ein in der Zeichnung nicht gezeigtes Innengewinde auf, über das sie zum Beispiel mit einem Trockeneisabgabegerät einer Trockeneisabgabeanordnung verschraubbar ist. An ihrem dem Gehäusedeckel 16 zugewandten zweiten Hülsenende 24 umfasst die Hülse 14 ein in der Zeichnung nicht gezeigtes Außengewinde, das mit einem in der Zeichnung ebenfalls nicht gezeigten Innengewinde des Gehäusedeckels 16 zum Verschrauben der Hülse 14 und des Gehäusedeckels 16 zusammenwirkt. Der Gehäusedeckel 16 trägt an seinem der Hülse 14 abgewandten Deckelende 26 ein in der Zeichnung nicht dargestelltes Außengewinde, auf das beispielsweise eine Strahldüse einer Trockeneisabgabeanordnung aufschraubbar ist.As is apparent in particular from FIGS. 1 to 3, the crusher 10 has a housing 12 with a sleeve 14 and a housing cover 16 which can be detachably connected to the sleeve 14 and which is likewise of sleeve-shaped design. The sleeve 14 and the housing cover 16 have a common axis 18 around which they are formed substantially rotationally symmetrical. At its first sleeve end 20, which faces away from the housing cover 16, the sleeve 14 has an internal thread, not shown in the drawing, via which it can be screwed, for example, to a dry ice dispenser of a dry ice dispensing arrangement. At its housing cover 16 facing the second sleeve end 24, the sleeve 14 comprises a not shown in the drawing external thread, which cooperates with a not shown in the drawing internal thread of the housing cover 16 for screwing the sleeve 14 and the housing cover 16. The housing cover 16 carries on its side facing away from the sleeve 14 cover end 26 a not shown in the drawing external thread on which, for example, a jet nozzle of a dry ice dispensing assembly can be screwed.
Weiter umfasst das Gehäuse 12 einen über die Hülse 14 schiebbaren Außenring 28, der beispielsweise aus Gummi gefertigt ist und im Betrieb des Zerkleinerers 10 kälteisolierend wirkt.Further, the housing 12 comprises a sliding over the sleeve 14 outer ring 28, which is made for example of rubber and acts cold-insulating in the operation of the crusher 10.
Im Inneren der Hülse 14 ist ein Aufnahmekörper 30 für Zerkleinerungsglieder 32, 34, 36 und 38 zum Zerkleinern von Trockeneisgranulat anordenbar. Der Aufnahmekörper 30 ist als Hohlzylinder 40 ausgebildet und bei Anordnung in der Hülse 14 koaxial zur Hülse 14 und dem Gehäusedeckel 16 ausgerichtet. Bei verschlossenem Gehäuse 12, d. h. bei auf die Hülse 14 aufgeschraubtem Gehäusedeckel 16, ist der Aufnahmekörper 40 in der Hülse 14 unbeweglich gehalten. Seine zentrale Durchgangsbohrung 42 fluchtet mit einer zentralen Durchgangsbohrung 44 des Gehäusedeckels 16 sowie mit einer zentralen Durchgangsbohrung 46 der Hülse 14, um einen sich über die gesamte Länge des Gehäuses 12 erstreckenden Strömungskanal 48 zu bilden. Das erste Hül- senende 20 bildet dabei einen Einlass 50 für den Strömungskanal 48, und das Deckelende 26 bildet einen Auslass 52 für den Strömungskanal 48.Inside the sleeve 14, a receiving body 30 for crushing members 32, 34, 36 and 38 for comminuting dry ice granules can be arranged. The receiving body 30 is formed as a hollow cylinder 40 and aligned in arrangement in the sleeve 14 coaxial with the sleeve 14 and the housing cover 16. When the housing 12 is closed, ie when the housing cover 16 is screwed onto the sleeve 14, the receiving body 40 is held immovably in the sleeve 14. Its central through bore 42 is aligned with a central through-bore 44 of the housing cover 16 and with a central through-bore 46 of the sleeve 14 to form over the entire length of the housing 12 extending flow channel 48. The first case In this case, the senende 20 forms an inlet 50 for the flow channel 48, and the lid end 26 forms an outlet 52 for the flow channel 48.
Durch den Strömungskanal 48 kann ein Gemisch aus Druckgas und Trockeneisgranulat, das von einer Trockeneisabgabeanordnung abgebbar ist, geführt und auf eine zu reinigende Fläche aufgebracht werden. Der Zerkleinerer 10 dient dabei zum Zerkleinern des Trockeneisgranulates auf die untenstehend beschriebene Weise.Through the flow channel 48, a mixture of compressed gas and dry ice granules, which can be delivered by a dry ice dispensing arrangement, guided and applied to a surface to be cleaned. The crusher 10 serves to comminute the dry ice granules in the manner described below.
Wie bereits erwähnt, umfasst der Zerkleinerer 10 Zerkleinerungsglieder 32, 34, 36, 38 für Trockeneisgranulat. Das Zerkleinerungsglied 32 wird nachfolgend als erstes Zerkleinerungsglied 32 des Zerkleinerers 10 bezeichnet, und die Zerkleinerungsglieder 34, 36 und 38 werden nachfolgend als zweite Zerkleinerungsglieder des Zerkleinerers 10 bezeichnet. Die Zerkleinerungsglieder 32, 34, 36 und 38 sind als Scheiben 54, 56, 58 bzw. 60 ausgebildet, wobei die Scheibe 58 identisch zur Scheibe 54 und die Scheibe 60 identisch zur Scheibe 56 ausgebildet ist. Demzufolge weisen die Scheiben 54 und 56 eine unterschiedliche Ausbildung auf. Im Folgenden werden lediglich die sich unterscheidenden Merkmale der Scheiben 54, 56, 58 und 60 mit unterschiedlichen Bezugszeichen versehen.As already mentioned, the crusher comprises 10 crushers 32, 34, 36, 38 for dry ice granules. The comminution member 32 is hereinafter referred to as the first comminution member 32 of the crusher 10, and the comminution members 34, 36 and 38 are referred to below as the second comminution members of the comminutor 10. The crushing members 32, 34, 36 and 38 are formed as discs 54, 56, 58 and 60, wherein the disc 58 is identical to the disc 54 and the disc 60 is formed identical to the disc 56. As a result, the discs 54 and 56 have a different configuration. In the following, only the distinguishing features of the discs 54, 56, 58 and 60 are provided with different reference numerals.
Wie insbesondere aus den Figuren 4A bis 4D deutlich wird, umfassen die Scheiben 54 und 56 Gitterabschnitte 62 bzw. 64 mit Gitterstäben 66 bzw. 68. Die Gitterstäbe 66 der Scheibe 54 sind versetzt zu den Gitterstäben 68 der Scheibe 56 angeordnet. Der Versatz beträgt etwa den halben Wert des gegenseitigen Abstandes der Gitterstäbe 66. Die Gitterabschnitte 62 und 64 werden jeweils von einem identisch ausgebildeten Randabschnitt 70 eingefasst. Die Gitterabschnitte 62 und 64 haben bei Draufsicht auf die Scheiben 54, 56, 58 und 60 eine kreisrunde Kontur, deren Durchmesser dem Durchmesser der Durchgangsbohrung 42 und damit des Strömungskanals 48 im Aufnahmekörper 30 entspricht.As can be seen in particular from FIGS. 4A to 4D, the disks 54 and 56 comprise grid sections 62 and 64, respectively, with bars 66 and 68, respectively. The bars 66 of the pane 54 are offset from the bars 68 of the pane 56. The offset is about half the value of the mutual distance of the grid bars 66. The grid sections 62 and 64 become each enclosed by an identically formed edge portion 70. The grid sections 62 and 64 have in plan view of the discs 54, 56, 58 and 60 a circular contour whose diameter corresponds to the diameter of the through hole 42 and thus of the flow channel 48 in the receiving body 30.
Bei Draufsicht weisen die Scheiben 54, 56, 58 und 60 die Kontur eines Kreises auf, von dem außenseitig zwei senkrecht zueinander ausgerichtete Kreissegmente entfernt wurden, so dass der Randabschnitt 70 zwei rechtwinklig zueinander verlaufende Anlegekanten 72 und 74 aufweist.When viewed from above, the discs 54, 56, 58 and 60 have the contour of a circle, on the outside of which two circular segments oriented perpendicular to one another have been removed, so that the edge portion 70 has two contact edges 72 and 74 extending at right angles to one another.
Zur Aufnahme der Scheiben 54, 56, 58 und 60 umfasst der Aufnahmekörper 30 identisch ausgebildete Zerkleinerungsgliedaufnahmen 76, 78, 80 und 82 (Figur 2). Diese umfassen jeweils eine nutförmige Ausnehmung 84, die senkrecht zur Achse des hohlzylindrischen Aufnahmekörpers 30 und damit bei Anordnung desselben im Gehäuse 12 senkrecht zum Strömungskanal 48 ausgerichtet ist. Die nutförmigen Ausnehmungen 84 greifen so tief in den Aufnahmekörper 30 ein, dass sie den Strömungskanal 48 durchgreifen. Ein geradliniger Nutboden 86 bildet jeweils eine Anlegefläche 88 für die Anlegekante 72 oder 74 einer Scheibe 54, 56, 58 bzw. 60.For receiving the disks 54, 56, 58 and 60, the receiving body 30 comprises identically designed comminuting member receptacles 76, 78, 80 and 82 (FIG. 2). These each comprise a groove-shaped recess 84, which is aligned perpendicular to the axis of the hollow cylindrical receiving body 30 and thus when it is arranged in the housing 12 perpendicular to the flow channel 48. The groove-shaped recesses 84 engage so deeply in the receiving body 30 that they pass through the flow channel 48. A rectilinear groove base 86 in each case forms a contact surface 88 for the contact edge 72 or 74 of a disk 54, 56, 58 and 60, respectively.
Die Breite der nutförmigen Ausnehmungen 84 ist so bemessen, dass die Scheiben 54, 56, 58 und 60 jeweils spielfrei zwischen Seitenwänden 90 und 92 einer nutförmigen Ausnehmung 84 einsetzbar sind. Dadurch kann sich der Randabschnitt 70 an den Seitenwänden 90 und 92 abstützen, so dass die Scheiben 54, 56, 58 und 60 gegenüber dem Strömungskanal 48 ausgerichtet werden können. Zudem kann, wie erwähnt, wahlweise eine der Anlegekanten 72 und 74 an den Nutboden 86 angelegt werden.The width of the groove-shaped recesses 84 is dimensioned such that the discs 54, 56, 58 and 60 are each play-free between side walls 90 and 92 of a groove-shaped recess 84 can be used. As a result, the edge portion 70 may be supported on the side walls 90 and 92, so that the discs 54, 56, 58 and 60 aligned with respect to the flow channel 48 can be. In addition, as mentioned, optionally one of the abutment edges 72 and 74 are applied to the groove bottom 86.
Der Durchmesser des Aufnahmekörpers 30 entspricht dem Durchmesser der Grundform der Scheiben 54, 56, 58 und 60, d. h. unter Nichtberücksichtigung der abgetrennten Kreissegmente.The diameter of the receiving body 30 corresponds to the diameter of the basic shape of the discs 54, 56, 58 and 60, d. H. disregarding the separated circle segments.
Wie insbesondere durch die Figuren 4A bis 4D deutlich wird, ist die Wirkungsweise der Zerkleinerungsglieder 32, 34, 36 und 38 folgendermaßen:As is particularly clear from FIGS. 4A to 4D, the operation of the reducing elements 32, 34, 36 and 38 is as follows:
Zunächst sei nur das erste Zerkleinerungsglied 32 im Aufnahmekörper 30 angeordnet, beispielsweise in der Zerkleinerungsgliedaufnahme 76. Der Gitterabschnitt 62 ist im Strömungskanal 48 positioniert und verringert dessen Querschnitt. Die Verringerung des Querschnitts des Strömungskanals 48 ist in Figur 4D erkennbar, in der die Strömungskanalkontur 94 gestrichelt über der Kontur des Gitterabschnittes 62 gezeichnet ist.First, only the first crushing member 32 is disposed in the receiving body 30, for example, in the crushing member receptacle 76. The grid portion 62 is positioned in the flow channel 48 and reduces its cross section. The reduction of the cross-section of the flow channel 48 can be seen in FIG. 4D, in which the flow channel contour 94 is shown in dashed lines over the contour of the grid section 62.
Trockeneisgranulat, das mittels Druckgas durch den Strömungskanal 48 geführt wird, kann auf die Gitterstäbe 66 des Gitterabschnittes 62 aufprallen und dadurch zerkleinert werden. Infogedessen weist das Trockeneisgranulat am Auslass 52 des Zerkleinerers 10 eine durchschnittliche Größe auf, die kleiner ist als die durchschnittliche Größe des Trockeneisgranulates am Einlass 50 des Zerkleinerers 10. Das Verhältnis der durchschnittlichen Größe von Trockeneisgranulat am Einlass 50 zur durchschnittlichen Größe am Auslass 52 wird nachfolgend als Zerkleinerungsgrad bezeichnet. Wird nur eines der Zerkleinerungsglieder 32, 34, 36, oder 38 im Aufnahmekörper 30 angeordnet, wird der erzielbare Zerkleinerungsgrad als Einzelzerkleinerungsgrad bezeichnet. Mittels des Zerkleinerungsgliedes 32 ist also ein gewisser Einzelzerkleinerungsgrad erzielbar.Dry ice granules, which is guided by means of compressed gas through the flow channel 48, can impact the bars 66 of the grid section 62 and thereby be comminuted. As a result, the dry ice granules at the outlet 52 of the crusher 10 have an average size smaller than the average size of the dry ice granules at the inlet 50 of the crusher 10. The ratio of the average size of dry ice granules at the inlet 50 to the average size at the outlet 52 will be referred to below Comminution degree called. If only one of the comminuting members 32, 34, 36, or 38 is arranged in the receiving body 30, the achievable degree of comminution referred to as Einzelzerkleinerungsgrad. By means of the comminuting member 32, therefore, a certain degree of single comminution can be achieved.
Es seien nun zusätzlich zum ersten Zerkleinerungsglied 32 auch die zweiten Zerkleinerungsglieder 34, 36 und 38 im Aufnahmekörper 30 angeordnet, wobei die Scheiben 54 und 58 deckungsgleich zueinander und die Scheiben 56 und 60 deckungsgleich zueinander ausgerichtet seien. Dies entspricht der in Figur 4C dargestellten Kombination der Scheiben 54, 56, 58 und 60. Wegen der unterschiedlich ausgebildeten Gitterabschnitte 62 und 64 ist es dadurch möglich, den Querschnitt des Strömungskanals 48 weiter zu verringern, als dies allein mit dem ersten Zerkleinerungsglied 32 möglich ist.Now, in addition to the first comminuting member 32, the second comminuting members 34, 36 and 38 are also arranged in the receiving body 30, the discs 54 and 58 being congruent with each other and the discs 56 and 60 being aligned congruent to one another. This corresponds to the combination of the disks 54, 56, 58 and 60 shown in FIG. 4C. Because of the differently configured grid sections 62 and 64, this makes it possible to reduce the cross-section of the flow channel 48 further than is possible with the first comminuting member 32 alone ,
Durch den Strömungskanal 48 geführtes Trockeneisgranulat kann nun auch durch Aufprall auf die Gitterstäbe 68 zerkleinert werden. Infolgedessen ist mit einer derartigen Kombination der Zerkleinerungsglieder 32, 34, 36 und 38 ein Gesamtzerkleinerungsgrad erzielbar, der höher ist als der allein mit dem ersten Zerkleinerungsglied 32 erzielbare Einzelzerkleinerungsgrad.Dry ice granules guided through the flow channel 48 can now also be comminuted by impact with the bars 68. As a result, with such a combination of the crushing members 32, 34, 36 and 38, a Gesamtzerkleinerungsgrad achievable, which is higher than the achievable alone with the first crushing member 32 Einzelzerkleinerungsgrad.
Weil die Scheiben 54, 56, 58 und 60 sowohl mit der Anlegekante 72 als auch mit der Anlegekante 74 am Nutboden 86 anliegen können, können sie auf unterschiedliche Weise, d. h. in unterschiedlichen Lagen, in den Zerkleinerungsgliedaufnahmen 76, 78, 80 und 82 angeordnet werden. Eine Überführung eines der Zerkleinerungsglieder 32, 34, 36 oder 38 von einer Lage in eine andere Lage ist durch eine Drehung des jeweiligen Zerkleinerungsgliedes um die Achse 18 oder um eine senkrecht zur Achse 18 und zum Nutboden 18 ausge- richtete Achse 96 möglich. Die Achse 96 ist in Figur 2 als durch die Zerkleinerungsgliedaufnahme 76 verlaufend dargestellt. Da die Zerkleinerungsgliedaufnahmen 76, 78, 80 und 82 identisch ausgebildet sind, kann sie auch als durch die Zerkleinerungsgliedaufnahmen 78, 80 und 82 verlaufend angesehen werden. Entsprechendes gilt für eine nachfolgend beschriebene Achse 136.Because the discs 54, 56, 58 and 60 can rest against the groove bottom 86 both with the contact edge 72 and with the contact edge 74, they can be arranged in different ways, ie in different positions, in the comminuting member receptacles 76, 78, 80 and 82 , A transfer of one of the comminuting members 32, 34, 36 or 38 from one position to another position is achieved by a rotation of the respective comminution member about the axis 18 or about a perpendicular to the axis 18 and to the groove bottom 18. directed axis 96 possible. The axle 96 is shown in Figure 2 as passing through the comminution member receiver 76. Since the comminutor holders 76, 78, 80, and 82 are identically formed, they may also be considered to pass through the comminutor holders 78, 80, and 82. The same applies to an axis 136 described below.
Durch die Möglichkeit, die Zerkleinerungsglieder 32, 34, 36 und 38 in unterschiedlichen Lagen in den Zerkleinerungsgliedaufnahmen 76, 78, 80 und 82 anzuordnen, ist die Möglichkeit gegeben, je nach Orientierung der Gitterabschnitte 62 und 64 relativ zueinander unterschiedliche Verringerungen des Querschnitts des Strömungskanals 48 zu erzielen. Infolgedessen können durch die unterschiedliche Anordnung der Zerkleinerungsglieder 32, 34, 36 und 38 im Aufnahmekörper 30 eine Mehrzahl von Gesamtzerkleinerungsgraden erzielt werden. Figur 4A zeigt die Anordnung der Zerkleinerungsglieder 32, 34, 36 und 38 aus Figur 2, die Figuren 4B und 4C zeigen alternative Anordnungen.Due to the possibility of arranging the comminuting members 32, 34, 36 and 38 in different positions in the comminuting member receptacles 76, 78, 80 and 82, it is possible, depending on the orientation of the grating sections 62 and 64, to reduce the cross section of the flow channel 48 relative to each other to achieve. As a result, by the different arrangement of the crushing members 32, 34, 36 and 38 in the receiving body 30, a plurality of Gesamtzerkleinerungsgraden can be achieved. Figure 4A shows the arrangement of the reducing elements 32, 34, 36 and 38 of Figure 2, Figures 4B and 4C show alternative arrangements.
Figur 5 zeigt eine Draufsicht auf den Zerkleinerer 10, in der die Verringerung der Querschnittsfläche des Strömungskanales 48 gemäß der in Figur 4A gezeigten Kombination der Zerkleinerungsglieder 32, 34, 36 und 38 erkennbar ist.Figure 5 shows a plan view of the crusher 10, in which the reduction of the cross-sectional area of the flow channel 48 according to the combination shown in Figure 4A of the crushing members 32, 34, 36 and 38 can be seen.
Weil die Zerkleinerungsgliedaufnahmen 76, 78, 80 und 82 längs des Strömungskanals 48 voneinander beabstandet sind, wird das durch den Strömungskanal 48 geführte Trockeneisgranulat in unterschiedlichen Ebenen zerkleinert. Infolgedessen ist die Gefahr verringert, dass sich die Gitterabschnitte 62 und 64 im Betrieb des Zerkleinerers 10 mit Trockeneisgranulat zusetzen und dadurch dessen Funktion einschränken. Durch die Unbeweglichkeit der Zerkleinerungsglieder 32, 34, 36 und 38 relativ zum Strömungskanal 48 kann der Zerkleinerungsgrad von Trockeneisgranulat im Betrieb des Zerkleinerers 10 konstant gehalten werden.Because the crusher member receivers 76, 78, 80 and 82 are spaced apart along the flow channel 48, the dry ice granules passed through the flow channel 48 are shredded at different levels. As a result, the risk is reduced that the grid sections 62 and 64 enforce in the operation of the crusher 10 with dry ice granules and thereby restrict its function. Due to the immobility of the crushing members 32, 34, 36 and 38 relative to the flow channel 48, the degree of comminution of dry ice granules during operation of the crusher 10 can be kept constant.
Alternativ zum Aufnahmekörper 30 kann der Zerkleinerer 10 einen in Figur 6 dargestellten Aufnahmekörper 100 umfassen, der im Wesentlichen bauartgleich zum Aufnahmekörper 30 ausgestaltet ist, weswegen gleichwirkende Bauteile wie die des Aufnahmekörpers 30 mit gleichen Bezugszeichen wie in den Figuren 2 und 3 versehen sind. Der Aufnahmekörper 100 umfasst vier identisch ausgebildete Zerkleinerungsgliedaufnahmen 76, 78, 80 und 82, die jeweils als spaltförmige Durchbrechung 102 des Aufnahmekörpers 100 ausgebildet sind. Die spaltförmigen Durchbrechungen 102 sind jeweils senkrecht zur Durchgangsbohrung 42 und damit im Betrieb des Zerkleinerers 10 senkrecht zum Strömungskanal 48 ausgerichtet, den sie durchgreifen. Sie umfassen jeweils eine Bodenwand 104 sowie eine parallel dazu verlaufende Deckenwand 106, die über Seitenwände 108 und 110 miteinander verbunden sind.As an alternative to the receiving body 30, the shredder 10 may comprise a receiving body 100 shown in FIG. 6, which is configured substantially identical in design to the receiving body 30, for which reason equivalent components as those of the receiving body 30 are provided with the same reference numerals as in FIGS. 2 and 3. The receiving body 100 comprises four identically designed comminuting member receptacles 76, 78, 80 and 82, which are each formed as a slot-shaped opening 102 of the receiving body 100. The gap-shaped openings 102 are each perpendicular to the through hole 42 and thus aligned in the operation of the crusher 10 perpendicular to the flow channel 48, which they pass through. They each include a bottom wall 104 and a ceiling wall 106 extending parallel thereto, which are connected to one another via side walls 108 and 110.
In den Zerkleinerungsgliedaufnahmen 76, 78, 80 und 82 des Aufnahmekörpers 100 sind in den Figuren 7A bis 7D dargestellte Zerkleinerungsglieder 112, 114, 116 und 118 formschlüssig anordenbar. Das Zerkleinerungsglied 112 wird nachfolgend als erstes Zerkleinerungsglied bezeichnet, und die Zerkleinerungsglieder 114, 116 und 118 werden nachfolgend als zweite Zerkleinerungsglieder bezeichnet. Die Zerkleinerungsglieder 112, 114, 116 und 118 sind als identische Scheiben 120, 122, 124 bzw. 126 ausgebildet. Sie umfassen jeweils einen Gitterabschnitt 128 mit Gitterstäben 129, wobei der Gitterabschnitt 128 von einer Kontur eingefasst wird, deren Durchmesser gleich dem Durchmesser des Strömungskanals 48 im Abgabekörper 100 ist. Jeder Gitterabschnitt 128 wird von einem Randabschnitt 130 eingefasst, der bei Draufsicht auf die Scheiben 120, 122, 124, 126 die Form eines Kreisringes hat, von dem zwei einander diametral gegenüberliegende Kreisringsegmente entfernt wurden. Infolgedessen weist jede Scheibe 120, 122, 124 und 126 zwei parallel zueinander verlaufende Anlegekanten 132 und 134 auf. Bei Anordnung der Scheiben 120, 122, 124 und 126 in den spaltförmigen Durchbrechungen 102 können die Anlegekanten 132 und 134 jeweils an der Bodenwand 104 und an der Deckenwand 106 anliegen. Der Randabschnitt 130 kann an den Seitenwänden 108 und 110 anliegen, so dass insgesamt, wie erwähnt, die Scheiben 120, 122, 124 und 126 formschlüssig im Aufnahmekörper 120 gehalten sind.In the comminution member receptacles 76, 78, 80 and 82 of the receiving body 100, comminuting members 112, 114, 116 and 118 shown in FIGS. 7A to 7D can be arranged in a form-fitting manner. The comminuting member 112 is hereinafter referred to as the first comminution member, and the comminuting members 114, 116 and 118 are hereinafter referred to as second comminuting members. The crushers 112, 114, 116 and 118 are formed as identical disks 120, 122, 124 and 126, respectively. They each comprise a grid section 128 with bars 129, wherein the grid section 128 is bordered by a contour whose diameter is equal to the diameter of the flow channel 48 in the dispensing body 100. Each grid section 128 is bordered by an edge section 130 which, when viewed in a top view of the discs 120, 122, 124, 126, has the shape of a circular ring from which two diametrically opposed circular ring segments have been removed. As a result, each disc 120, 122, 124 and 126 has two mutually parallel abutment edges 132 and 134. When the discs 120, 122, 124 and 126 are arranged in the slot-shaped apertures 102, the abutment edges 132 and 134 can rest on the bottom wall 104 and on the top wall 106, respectively. The edge portion 130 may abut against the side walls 108 and 110, so that overall, as mentioned, the discs 120, 122, 124 and 126 are held in a form-fitting manner in the receiving body 120.
Die Wirkungsweise der Zerkleinerungsglieder 112, 114, 116 und 118 entspricht der Wirkungsweise der vorstehend beschriebenen Zerkleinerungsglieder 32, 34, 36 und 38:The operation of the crushing members 112, 114, 116 and 118 corresponds to the operation of the above-described crushing members 32, 34, 36 and 38:
Zunächst sei nur das erste Zerkleinerungsglied 112 im Aufnahmekörper 100 angeordnet, zum Beispiel in der Zerkleinerungsgliedaufnahme 76. Dadurch ist der Gitterabschnitt 128 im Strömungskanal 48 positioniert, wobei die Gitterstäbe 129 den Querschnitt des Strömungskanals 48 verringern. Die Verringerung des Querschnittes des Strömungskanals 48 ist in Figur 7D erkennbar, in der die Strömungskanalkontur 94 über der Kontur des Gitterabschnittes 128 gezeichnet ist. Mittels Druckgas durch den Strömungskanal 48 geführtes Trockeneisgranulat kann auf die Gitterstäbe 129 aufprallen und dadurch zerkleinert werden, so dass mittels des ersten Zerkleinerungsglieds 112 ein Einzelzerkleinerungsgrad von Trockeneisgranulat erzielbar ist.First, only the first comminuting member 112 is arranged in the receiving body 100, for example in the comminuting member receptacle 76. As a result, the grating portion 128 is positioned in the flow channel 48, with the bars 129 reducing the cross section of the flow channel 48. The reduction of the cross-section of the flow channel 48 can be seen in FIG. 7D, in which the flow channel contour 94 lies over the contour of the grid section 128 is drawn. By means of compressed gas through the flow channel 48 guided dry ice granules can impact the bars 129 and thereby crushed, so that by means of the first crushing member 112 a Einzelzerkleinerungsgrad of dry ice granules can be achieved.
Es seien nun zusätzlich zum ersten Zerkleinerungsglied 112 auch die zweiten Zerkleinerungsglieder 114, 116 und 118 im Aufnahmekörper 100 angeordnet. Die Zerkleinerungsglieder 112, 114, 116 und 118 können in den Zerkleinerungsgliedaufnahmen 76, 78, 80 und 82 eine Mehrzahl von Lagen einnehmen, je nachdem, ob die Anlegekanten 132 und 134 an der Bodenwand 104 oder an der Deckenwand 106 anliegen. Die Zerkleinerungsglieder 112, 114, 116 und 118 können durch eine Drehung um die Achse 18, um die Achse 96, die vorliegend als senkrecht zur Bodenwand 104 ausgerichtet anzusehen ist, sowie um eine senkrecht zu den Achsen 18 und 96 orientierte Achse 136 von einer Lage in eine andere Lage überführt werden (siehe Figuren 2 und 6).Now, in addition to the first reducing element 112, the second reducing elements 114, 116 and 118 are also arranged in the receiving body 100. The crushing members 112, 114, 116 and 118 may occupy a plurality of layers in the crusher member receptacles 76, 78, 80 and 82 depending on whether the abutment edges 132 and 134 abut the bottom wall 104 or the top wall 106. The crushing members 112, 114, 116 and 118 may be viewed as rotating about the axis 18 about the axis 96, which is presently oriented perpendicular to the bottom wall 104, and about an axis 136 oriented perpendicular to the axes 18 and 96 be transferred to another position (see Figures 2 and 6).
Je nach Lage der Zerkleinerungsglieder 112, 114, 116 und 118 in den Zerkleinerungsgliedaufnahmen 76, 78, 80 und 82, d.h. je nach Orientierung der Gitterabschnitte 128 der Zerkleinerungsglieder 112, 114, 116 und 118 relativ zueinander, ist es möglich, den Querschnitt des Strömungskanals 48 unterschiedlich stark zu verringern (Figuren 7A bis 7C). Infolge der unterschiedlichen Verringerung des Querschnitts des Strömungskanals 48 können damit Gesamtzerkleinerungsgrade von Trockeneisgranulat erzielt werden, die größer sind als der allein mit dem ersten Zerkleinerungsglied 112 erzielbare Einzelzerkleinerungsgrad. Dabei erweist es sich als günstig, dass der Gitterabschnitt 128 bei Anordnung der Zerkleinerungsglieder 112, 114, 116 und 118 im Aufnahmekörper 100 unsymmetrisch zur Achse 18 ausgebildet ist. Daher ist es mittels zweier Zerkleinerungsglieder möglich, zum Beispiel mittels der Zerkleinerungsglieder 112 und 114, durch ihre Relativanordnung vier Gesamtzerkleinerungsgrade zu erzielen (in der Zeichnung nicht gezeigt). Hiervon sind drei Gesamtzerkleinerungsgrade größer als der allein mit dem ersten Zerkleinerungsglied 112 erzielbare Einzelzerkleinerungsgrad, weil die Gitterabschnitte 128 längs des Strömungskanals 48 betrachtet eine gekreuzte Stellung zueinander einnehmen können. Wegen der identischen Ausgestaltung der Zerkleinerungsglieder 112, 114 existiert auch ein Gesamtzerkleinerungsgrad, der gleich groß ist wie der allein mit dem ersten Zerkleinerungsglied 112 erzielbare Zerkleinerungsgrad. Dieser Gesamtzerkleinerungsgrad wird dann erzielt, wenn die Gitterabschnitte 128 der Zerkleinerungsglieder 112 und 114 längs des Strömungskanals 48 betrachtet zur Deckung gebracht werden.Depending on the position of the crushing members 112, 114, 116 and 118 in the crusher member receptacles 76, 78, 80 and 82, ie, depending on the orientation of the grating portions 128 of the crushing members 112, 114, 116 and 118 relative to each other, it is possible to control the cross section of the flow channel 48 different degrees to reduce (Figures 7A to 7C). As a result of the different reduction of the cross section of the flow channel 48, total degrees of comminution of dry ice granules can be achieved that are greater than the single degree of reduction achievable solely with the first comminution element 112. It proves to be advantageous that the grating portion 128 is formed in the receiving body 100 is asymmetrical to the axis 18 in the arrangement of the comminuting members 112, 114, 116 and 118. Therefore, it is possible by means of two crushing members, for example by means of the crushing members 112 and 114, to achieve four total degrees of comminution by their relative arrangement (not shown in the drawing). Of these, three total degrees of comminution are greater than the single degree of reduction achievable with only the first comminution member 112, because the grating portions 128, viewed along the flow channel 48, can assume a crossed position relative to one another. Because of the identical configuration of the comminuting members 112, 114, there is also a total degree of comminution, which is the same as the degree of comminution that can be achieved with the first comminuting member 112 alone. This total degree of comminution is achieved when the grid sections 128 of the comminution members 112 and 114 are aligned as viewed along the flow channel 48.
Die Erfindung betrifft auch eine Trockeneisabgabeanordnung, von der in Figur 8 eine bevorzugte Ausführungsform schematisch dargestellt und mit dem Bezugszeichen 140 belegt ist. Die Trockeneisabgabeanordnung 140 umfasst ein Trockeneisstrahlgerät 142, das über eine Druckleitung 144 an eine in der Zeichnung nicht gezeigte Druckgasquelle anschließbar ist. Das Trockeneisstrahlgerät 142 weist einen Vorratsbehälter 146 für Trockeneisgranulat auf, welches durch eine Dosiereinrichtung 148 mit dem durch die Druckleitung 144 geführten Druckgas gemischt werden kann. Das Gemisch aus Druckgas und Trockeneisgranulat kann einem von der Trockeneisabgabeanordnung umfassten Trockeneisabgabegerät 150 in Form einer Strahlpistole 152 über eine Zuleitung 154 zugeführt werden. Durch Betätigen eines Betätigungshebels 156 der Strahlpistole 152 kann eine zu reinigende Fläche mit dem Gemisch aus Trockeneisgranulat und Druckgas beaufschlagt werden.The invention also relates to a dry ice dispensing arrangement, of which a preferred embodiment is shown schematically in FIG. 8 and designated by the reference numeral 140. The dry ice dispensing arrangement 140 comprises a dry ice blasting device 142, which can be connected via a pressure line 144 to a compressed gas source not shown in the drawing. The dry ice blasting machine 142 has a storage container 146 for dry ice granules, which can be mixed by a metering device 148 with the pressure gas guided through the pressure line 144. The mixture of pressurized gas and dry ice granules may be supplied to a dry ice dispenser 150 in the form of a blasting gun 152 enclosed by the dry ice dispensing assembly via a supply line 154. By actuating an actuating lever 156 of the blasting gun 152, a surface to be cleaned can be charged with the mixture of dry ice granules and pressurized gas.
Der voranstehend beschriebene Zerkleinerer 10 wird ebenfalls von der Trockeneisabgabeanordnung 140 umfasst und ist mit der Strahlpistole 152 durch Verschraubung lösbar verbindbar. Ein Auslass 158 der Strahlpistole 152 umfasst hierfür ein in der Zeichnung nicht gezeigtes Außengewinde, das mit dem bereits erwähnten Innengewinde am ersten Hülsenende 20 der Hülse 14 zusammenwirken kann.The above-described comminutor 10 is also included in the dry ice dispensing assembly 140 and is detachably connectable to the blasting gun 152 by screwing. An outlet 158 of the blasting gun 152 for this purpose comprises an external thread not shown in the drawing, which can cooperate with the already mentioned internal thread on the first sleeve end 20 of the sleeve 14.
Mit Hilfe des Zerkleinerers 10 kann ein Benutzer die Größe des von dem Trockeneisstrahlgerät 142 bereitgestellten Trockeneisgranulates wie vorstehend beschrieben verringern. Durch die unterschiedliche Möglichkeiten der Anordnungen der Zerkleinerungsglieder 32, 34, 36 und 38 bzw. 112, 114, 116 und 118 in den Aufnahmekörpern 30 bzw. 100 sind eine Vielzahl von Gesamt- zerkleinerungsgraden von Trockeneisgranulat erzielbar, so dass die Trockeneisabgabeanordnung 140 vielseitig einsetzbar ist. With the aid of the crusher 10, a user can reduce the size of the dry ice granules provided by the dry ice blasting apparatus 142 as described above. Due to the different possibilities of arranging the size reduction elements 32, 34, 36 and 38, 112, 114, 116 and 118 in the receiving bodies 30 and 100, a plurality of total degrees of comminution of dry ice granules can be achieved, so that the dry ice dispensing arrangement 140 can be used in a variety of ways ,

Claims

P A T E N T A N S P R Ü C H E PATENT APPLICATIONS
1. Vorrichtung zum Zerkleinern von Trockeneisgranulat, umfassend ein Gehäuse mit einem Strömungskanal für mittels Druckgas auf eine zu reinigende Fläche aufbringbares Trockeneisgranulat sowie ein erstes Zerkleinerungsglied zum Zerkleinern des abzugebenden Trockeneisgranulates, dadurch gekennzeichnet, dass die Vorrichtung (10) mindestens ein zweites Zerkleinerungsglied (34, 36, 38; 114, 116, 118) aufweist, das im Gehäuse (12) in einer Lage anordenbar ist, bei der in Kombination mit dem ersten Zerkleinerungsglied (32; 112) ein Gesamtzerkleinerungsgrad erzielbar ist, der größer ist als der allein mit dem ersten Zerkleinerungsglied (32; 112) erzielbare Einzelzerkleinerungsgrad.1. An apparatus for crushing dry ice granules, comprising a housing having a flow channel for pressurized gas to be applied to a surface to be cleaned dry ice granules and a first crushing member for crushing the dispensed dry ice granules, characterized in that the device (10) at least one second crushing member (34, 36, 38, 114, 116, 118) which can be arranged in the housing (12) in a position in which, in combination with the first comminution member (32, 112), a total reduction degree greater than that with the unit can be achieved first crushing member (32; 112) achievable Einzelzerkleinerungsgrad.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das mindestens eine zweite Zerkleinerungsglied (36; 114, 116, 118) im Gehäuse (12) in einer Lage anordenbar ist, bei der der Gesamtzerkleinerungsgrad gleich groß ist wie der allein mit dem ersten Zerkleinerungsglied (32; 112) erzielbare Einzelzerkleinerungsgrad.2. The device according to claim 1, characterized in that the at least one second crushing member (36; 114, 116, 118) in the housing (12) can be arranged in a position in which the Gesamtzerkleinerungsgrad is the same size as that alone with the first crushing member (32; 112) achievable single degree of reduction.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das mindestens eine zweite Zerkleinerungsglied (34, 36, 38; 114, 116, 118) im Gehäuse (12) in einer Mehrzahl von Lagen anordenbar ist, bei denen der Gesamtzerkleinerungsgrad größer ist als der allein mit dem ersten Zerkleinerungsglied (32; 112) erzielbare Einzelzerkleinerungsgrad. 3. A device according to claim 1, characterized in that the at least one second crushing member (34, 36, 38, 114, 116, 118) in the housing (12) can be arranged in a plurality of layers, in which the Gesamtzerkleinerungsgrad is greater than that achievable with the first crushing member (32; 112) achievable Einzelzerkleinerungsgrad.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Gesamt- zerkleinerungsgrad in jeder der Mehrzahl von Lagen des mindestens einen zweiten Zerkleinerungsgliedes (114, 116, 118) im Gehäuse (12) unterschiedlich groß ist.4. Apparatus according to claim 3, characterized in that the total degree of comminution in each of the plurality of layers of the at least one second crushing member (114, 116, 118) in the housing (12) is different in size.
5. Vorrichtung nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass die Vorrichtung (10) mindestens ein zweites Zerkleinerungsglied (36; 114, 116, 118) aufweist, das identisch zum ersten Zerkleinerungsglied (32; 112) ausgebildet ist.5. Device according to one of the preceding claims, characterized in that the device (10) at least one second crushing member (36; 114, 116, 118) which is identical to the first crushing member (32; 112) is formed.
6. Vorrichtung nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass die Vorrichtung (10) mindestens ein zweites Zerkleinerungsglied (34, 38) aufweist, das unterschiedlich zum ersten Zerkleinerungsglied (32) ausgebildet ist .6. Device according to one of the preceding claims, characterized in that the device (10) has at least one second crushing member (34, 38) which is different from the first crushing member (32).
7. Vorrichtung nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass das erste und/oder das mindestens eine zweite Zerkleinerungsglied (32, 34, 36, 38; 112, 114, 116, 118) zur Zerkleinerung von Trockeneisgranulat einen Gitterabschnitt (62, 64; 128) umfasst, der im Strömungskanal (48) positionierbar ist.7. Device according to one of the preceding claims, characterized in that the first and / or the at least one second crushing member (32, 34, 36, 38; 112, 114, 116, 118) for comminuting dry ice granules a grid section (62, 64 128) positionable in the flow channel (48).
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass das mindestens eine zweite Zerkleinerungsglied (34, 36, 38; 114, 116, 118) durch eine Drehung seines Gitterabschnittes (62, 64; 128) relativ zum Gitterabschnitt (62, 128) des ersten Zerkleinerungsgliedes (32; 112) in unter- schiedliche Lagen überführbar ist, bei denen unterschiedliche Gesamtzer- kleinerungsgrade erzielbar sind.8. The device according to claim 7, characterized in that the at least one second crushing member (34, 36, 38, 114, 116, 118) by rotation of its grid portion (62, 64, 128) relative to the grid portion (62, 128) of the first crushing member (32; 112) in different layers can be transferred, in which different Gesamtzer- reduction degrees can be achieved.
9. Vorrichtung nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass das erste und/oder das mindestens eine zweite Zerkleinerungsglied (32, 34, 36, 38; 112, 114, 116, 118) einen Randabschnitt (70, 130) aufweisen, mit dem das erste und/oder das mindestens eine zweite Zerkleinerungsglied (32, 34, 36, 38; 112, 114, 116, 118) am Gehäuse (12) abstützbar ist.9. Device according to one of the preceding claims, characterized in that the first and / or the at least one second crushing member (32, 34, 36, 38; 112, 114, 116, 118) have an edge portion (70, 130), with in that the first and / or the at least one second comminuting member (32, 34, 36, 38; 112, 114, 116, 118) can be supported on the housing (12).
10. Vorrichtung nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass das erste und/oder das mindestens eine zweite Zerkleinerungsglied (32, 34, 36, 38; 112, 114, 116, 118) scheibenförmig ausgebildet ist.10. Device according to one of the preceding claims, characterized in that the first and / or the at least one second crushing member (32, 34, 36, 38, 112, 114, 116, 118) is disc-shaped.
11. Vorrichtung nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass das erste und das mindestens eine zweite Zerkleinerungsglied (32, 34, 36, 38; 112, 114, 116, 118), wenn sie im Gehäuse (12) angeordnet sind, längs des Strömungskanals (48) voneinander beabstandet sind.11. Device according to one of the preceding claims, characterized in that the first and the at least one second crushing member (32, 34, 36, 38, 112, 114, 116, 118), when they are arranged in the housing (12), along the flow channel (48) are spaced from each other.
12. Vorrichtung nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass das Gehäuse (12) einen Aufnahmekörper (30, 100) mit mindestens einer Zerkleinerungsgliedaufnahme (76, 78, 80, 82) für das erste und/oder das mindestens eine zweite Zerkleinerungsglied (32, 34, 36, 38; 112, 114, 116, 118) aufweist. 12. Device according to one of the preceding claims, characterized in that the housing (12) has a receiving body (30, 100) with at least one comminuting member receptacle (76, 78, 80, 82) for the first and / or the at least one second comminution member ( 32, 34, 36, 38; 112, 114, 116, 118).
13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass das erste und/oder das mindestens eine zweite Zerkleinerungsglied (32, 34, 36, 38; 112, 114, 116, 118) in der mindestens einen Zerkleinerungsgliedaufnahme (76, 78, 80, 82) relativ zum Strömungskanal (48) unbeweglich anordenbar ist.13. The device according to claim 12, characterized in that the first and / or the at least one second crushing member (32, 34, 36, 38, 112, 114, 116, 118) in the at least one crush member receiving (76, 78, 80, 82) is immovable relative to the flow channel (48) can be arranged.
14. Vorrichtung nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass die mindestens eine Zerkleinerungsgliedaufnahme (76, 78, 80, 82) eine Anlegefläche (88, 90, 92; 104, 106, 108, 110) für das erste und/oder das mindestens eine zweite Zerkleinerungsglied (32, 34, 36, 38; 112, 114, 116, 118) aufweist, an der dieses anlegbar und relativ zum Strömungskanal (48) ausrichtbar ist.14. The apparatus of claim 12 or 13, characterized in that the at least one crushing member receiving (76, 78, 80, 82) a contact surface (88, 90, 92, 104, 106, 108, 110) for the first and / or the at least one second crushing member (32, 34, 36, 38, 112, 114, 116, 118), on which this can be applied and relative to the flow channel (48) is aligned.
15. Scrambler nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass der Aufnahmekörper (30, 100) als den Strömungskanal (48) zumindest entlang eines Teilabschnittes einfassender Hohlkörper ausgebildet ist.15. Scrambler according to one of claims 12 to 14, characterized in that the receiving body (30, 100) as the flow channel (48) is formed at least along a portion of enclosing hollow body.
16. Vorrichtung nach einem der Ansprüche 12 bis 15, dadurch gekennzeichnet, dass die mindestens eine Zerkleinerungsgliedaufnahme (76, 78, 80, 82) als quer zum Strömungskanal (48) orientierte nutförmige Ausnehmung (84) ausgebildet ist.16. Device according to one of claims 12 to 15, characterized in that the at least one comminution member receiving means (76, 78, 80, 82) is designed as a transverse to the flow channel (48) oriented groove-shaped recess (84).
17. Vorrichtung nach einem der Ansprüche 12 bis 15, dadurch gekennzeichnet, dass die mindestens eine Zerkleinerungsgliedaufnahme (76, 78, 80, 82) als quer zum Strömungskanal (48) orientierte spaltförmige Durchbrechung (102) ausgebildet ist.17. Device according to one of claims 12 to 15, characterized in that the at least one comminution member receiving (76, 78, 80, 82) is formed as a transverse to the flow channel (48) oriented gap-shaped aperture (102).
18. Vorrichtung nach einem der Ansprüche 12 bis 17, dadurch gekennzeichnet, dass das Gehäuse (12) eine Hülse (14) aufweist, die den Aufnahmekörper (30, 100) umgibt.18. Device according to one of claims 12 to 17, characterized in that the housing (12) has a sleeve (14) which surrounds the receiving body (30, 100).
19. Vorrichtung nach einem der Ansprüche 12 bis 18, dadurch gekennzeichnet, dass der Aufnahmekörper (30, 100) relativ zum Strömungskanal (48) unbeweglich fixierbar ist.19. Device according to one of claims 12 to 18, characterized in that the receiving body (30, 100) relative to the flow channel (48) is immovably fixed.
20. Vorrichtung nach Anspruch 18 oder 19, dadurch gekennzeichnet, dass das Gehäuse (12) mindestens einen mit der Hülse (14) lösbar verbindbaren Gehäusedeckel (16) aufweist.20. The apparatus of claim 18 or 19, characterized in that the housing (12) has at least one with the sleeve (14) releasably connectable housing cover (16).
21. Trockeneisabgabeanordnung zum Abgeben eines Gemisches aus Druckgas und Trockeneisgranulat, umfassend mindestens eine Vorrichtung (10) zum Zerkleinern von Trockeneisgranulat nach einem der voranstehenden Ansprüche. A dry ice dispensing assembly for dispensing a mixture of compressed gas and dry ice granules, comprising at least one apparatus (10) for crushing dry ice granules as claimed in any one of the preceding claims.
EP08716466A 2007-03-19 2008-03-12 Device for comminuting dry ice granules, and dry ice dispensing arrangement having such a device Active EP2148763B8 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007014284A DE102007014284B4 (en) 2007-03-19 2007-03-19 Device for crushing dry ice granules and dry ice dispensing arrangement with such a device
PCT/EP2008/001960 WO2008113497A1 (en) 2007-03-19 2008-03-12 Device for comminuting dry ice granules, and dry ice dispensing arrangement having such a device

Publications (3)

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EP2148763A1 EP2148763A1 (en) 2010-02-03
EP2148763B1 EP2148763B1 (en) 2011-08-03
EP2148763B8 true EP2148763B8 (en) 2012-02-08

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EP08716466A Active EP2148763B8 (en) 2007-03-19 2008-03-12 Device for comminuting dry ice granules, and dry ice dispensing arrangement having such a device

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US (1) US7922565B2 (en)
EP (1) EP2148763B8 (en)
CN (1) CN101641185B (en)
AT (1) ATE518623T1 (en)
DE (1) DE102007014284B4 (en)
DK (1) DK2148763T3 (en)
WO (1) WO2008113497A1 (en)

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Also Published As

Publication number Publication date
US20100075579A1 (en) 2010-03-25
DE102007014284A1 (en) 2008-09-25
DE102007014284B4 (en) 2009-02-26
EP2148763A1 (en) 2010-02-03
DK2148763T3 (en) 2011-11-14
US7922565B2 (en) 2011-04-12
ATE518623T1 (en) 2011-08-15
CN101641185A (en) 2010-02-03
EP2148763B1 (en) 2011-08-03
CN101641185B (en) 2012-11-07
WO2008113497A1 (en) 2008-09-25

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