Hammer retainer

Abstract

The present invention relates to a hammer holder (1) for a hammer mill (6), the hammer holder comprising a main component (2) having a bottom region (2a) and a slot (3) for positioning a hammer (5) in the hammer holder (1), the bottom region (2a) including a surface preventing any movement of the hammer (5) out of the hammer holder (1) through the bottom region (2a), and wherein the main component (2) further includes a front portion and a rear portion (2c, 2d) having corresponding openings (4a, 4b) for releasably arranging the hammer holder (1) in the hammer mill (6). Furthermore, the present invention relates to a hammer mill (6) comprising at least one hammer holder (1).

Description

Technical Field

[0001] The present invention relates to a hammer holder for a hammer mill and a hammer mill comprising at least one such hammer holder. Background Technology

[0002] Hammer mills are well known in the prior art. Hammer mills are used for the coarse grinding of large quantities of materials. A typical hammer mill has a rotor with a large number of discs arranged on it.

[0003] Hammer pins are suspended in the circumferential region of the disc, on which hammers are pivotally arranged. As the rotor rotates, these hammers move outward in response to centrifugal force, breaking the material they strike. To prevent the axially aligned hammers from colliding with each other in the direction of the rotor, the hammers are spaced apart by spacers. Simultaneously, circumferential collisions between adjacent hammers must be prevented. Therefore, the spacers between the hammers are typically different for adjacent axes.

[0004] The hammer blades suffer severe wear due to continuous impact on the material and therefore must be replaced periodically. This requires removing the shaft containing the spacers and worn hammer blades from the machine, separating the worn hammer blades from the shaft, supplying new hammer blades onto the shaft, and then reinserting the shaft into the correct position. This is a laborious and time-consuming process.

[0005] DE 102 53 345A1 discloses a hammer mill in which the replacement of the hammers is simplified because the hammers can be directly mounted on the rotor in the module. The hammers and their spacers are arranged in a row in a template. Then, hammer pins are introduced through all the arranged hammers and spacers. The module, prefabricated in this way, is then transferred to the rotor in the template, and the hammer pins are fixed in the rotor at the rotor disc.

[0006] Existing hammer mills have the following disadvantages: replacing individual damaged or worn hammers requires considerable effort; a large number of hammers positioned in front of the one to be replaced must always be removed; and spacers and hammers must be arranged in the correct order.

[0007] DE-10 2014 213 048A1 describes an installation aid for inserting hammer blades into a hammer mill. However, this method has a significant drawback: such installation aids become very heavy for large machines. Furthermore, in this solution, replacing individual hammer blades remains cumbersome because the hammer blades and spacers are connected via a common shaft.

[0008] WO 2011 / 086035 A2 describes a hammer assembly in which a plurality of hammers are arranged in slits of a rake-like member to laterally guide and position the hammers. Within the slits, although the hammers can rotate about hammer pins, their lateral displacement is fixed. The rake-like member is directly connected to the rotor disk and section disk of the hammer mill shown in the document.

[0009] The solution described is still not optimal. For example, while the slits in the rake-like parts of the component in WO 2011 / 086035 A2 are only used to prevent lateral displacement of the hammer blades arranged therein, they do not prevent the hammer blades from moving downward through these slits, which makes the assembly of the entire hammer blade assembly and the replacement of worn hammer blades more difficult. Summary of the Invention

[0010] The problem with this invention is to overcome the shortcomings of the prior art. In particular, a hammer mill is provided that allows for simple and quick replacement of the hammer blades.

[0011] This problem is solved by the subject matter described in the claims of this invention.

[0012] In detail, the present invention relates to a hammer holder for a hammer mill, the hammer holder comprising a main component having a bottom region and a slot for positioning hammers in the hammer holder, the bottom region including a surface preventing any movement of the hammers out of the hammer holder through the bottom region, and wherein the main component further includes a front portion and a rear portion having corresponding openings for releasably arranging the hammer holder in the hammer mill.

[0013] According to a preferred embodiment, the present invention relates to a hammer holder for a hammer mill, the hammer holder comprising a main component having a bottom region and a side region, wherein a slot is provided in the side region for positioning a hammer in the hammer holder, and the bottom region includes a surface preventing any movement of the hammer out of the hammer holder through the bottom region, and wherein the main component further includes a front portion and a rear portion having corresponding openings for releasably arranging the hammer holder in the hammer mill.

[0014] According to another preferred embodiment, the main component includes a top region in which slots are provided for positioning the hammer blades in the hammer blade holder. Preferably, an intermediate portion is provided between the slots in the top region, extending from the top region to the bottom region. This embodiment provides particularly good support for the hammer blades disposed in the hammer blade holder and enables particularly quick replacement of the hammer blades in the hammer blade holder.

[0015] The hammer holder according to the invention offers several advantages. In the holder, the hammers are fixedly arranged and prevented from shifting downwards out of the holder. This simplifies the assembly of the hammer holder with the hammers. Furthermore, the hammer holder comprises a front portion and a rear portion. The hammer holder according to the invention can be releasably arranged within a hammer mill in various different modified forms without requiring any modification to the hammer mill itself. Since the hammer holder is designed as a separate component, a virtually unlimited number of configuration possibilities are possible. This provides numerous advantages to the hammer mill operator in optimizing their process. Moreover, using the hammer holder according to the invention, worn hammers can be reused via a simple turning method.

[0016] The hammer holder according to the invention includes a main component. The main component includes a bottom region. Preferably, the bottom region has a rectangular shape. The bottom is configured to prevent any movement of the hammer blade out of the hammer holder through the bottom region. For this purpose, the bottom region includes a surface that is impermeable to the hammer blade. Preferably, the surface of the bottom region that prevents the hammer blade from moving out of the hammer holder through the bottom region is a substantially closed surface, more preferably a flat closed surface. The surface is preferably rectangular in shape. A “substantially closed” surface means completely closed or may contain openings, such as holes sized too small for any hammer blade to penetrate. For example, the bottom region may include a small hole or slit having at least one size that prevents any hammer blade from penetrating through such a hole or slit.

[0017] As mentioned above, this facilitates the assembly of the hammer holder with the hammer blades, because the hammer blades are more securely held in the hammer holder.

[0018] In one embodiment of the invention, the main component further includes a side region. The side region is disposed on the opposite side of the bottom region. Preferably, the bottom region has a rectangular shape, and the side regions are disposed on the longer side of the bottom region.

[0019] The side region of the main component can have any shape suitable for securing the hammer blade in a slot (discussed below) provided in the side region. For example, the side region can be a flat rectangular component arranged at a specific angle in the bottom region, preferably 30° to 90°, more preferably 90°. In another preferred embodiment, the side region can have a curved shape, preferably a wavy shape, wherein at least one portion extends above the bottom region of the main component. This structure is preferred because it provides better securing of the hammer blade arranged in the hammer blade holder.

[0020] In the side regions, slots are provided for positioning the hammer blade in the hammer blade holder. The slots are evenly distributed in both side regions of the main component, such that a hammer blade arranged in a slot in one side region is simultaneously arranged in a corresponding slot in the other side region. Depending on the shape of the side regions, the slots may or may not extend over the entire height of the respective side region. For example, in an embodiment where the side regions are flat rectangular components arranged at a 90° angle at the bottom region, the slots preferably extend over the entire height of the side regions and open at their upper ends to allow the hammer blade to be inserted into the bottom region from above. In an embodiment where the side regions have a curved shape, preferably a wavy shape, having at least one portion extending over the bottom region of the main component, the slots are preferably provided only in said portion extending over the bottom region of the main component.

[0021] The width of the slot preferably extends slightly beyond the width of the hammer to be positioned therein. This allows the hammer to be easily inserted into the slot while providing sufficient lateral fixation. Preferably, the width of the slot extends 1% to 10%, more preferably 2% to 5%, beyond the width of the hammer to be positioned therein.

[0022] In another embodiment of the invention, the main component includes a top region, wherein a slot is provided in the top region for positioning the hammer blade in the hammer blade holder.

[0023] Preferably, the top region has a rectangular shape and is connected to the front and rear portions of the main component of the hammer holder.

[0024] The top region may be flat or alternatively have a curved shape, wherein the center of the top region is raised compared to the side regions of the top region.

[0025] The slots in the top region are preferably evenly distributed, meaning the distance between adjacent slots is the same over the entire top region. The slots do not extend over the entire width of the top region, but are laterally closed.

[0026] The width of the slot in the top region preferably extends slightly beyond the width of the hammer to be positioned therein. This allows the hammer to be easily inserted into the slot while providing sufficient lateral fixation. Preferably, the width of the slot in the top region extends 1% to 10%, more preferably 2% to 5%, beyond the width of the hammer to be positioned therein.

[0027] Preferably, an intermediate portion is provided between the slots in the top region, the intermediate portion extending from the top region to the bottom region.

[0028] The intermediate section includes an opening through which a hammer pin of the hammer mill can be inserted, thereby positioning the hammer holder in the appropriate location within the hammer mill. The opening in the intermediate section aligns with the openings in the front and rear sections described below, such that the hammer pin of the hammer mill can be inserted through both the openings in the front and rear sections, as well as through the opening in the intermediate section.

[0029] The middle portion of the main component may have any shape suitable for securing the hammer blade in the hammer blade holder and allowing the hammer blade holder to be connected to the hammer blade pin, as described above.

[0030] Preferably, the middle portion of the main component may be a flat component arranged at an angle of 30° to 90°, preferably 90°, in the top and bottom regions. These flat components may have a rectangular shape or a varying width that decreases from the top region to the bottom region.

[0031] In this preferred embodiment, separate sections are formed in the main components of the hammer holder, these separate sections being defined by adjacent intermediate portions, or, in the case of a first and a last portion, by intermediate portions and a front or rear portion, respectively. This embodiment provides particularly good support for the hammers disposed in the hammer holder and enables particularly quick replacement of the hammers in the hammer holder.

[0032] According to a preferred embodiment of the invention, the hammer holder comprises 2 to 20, preferably 4 to 15, and more preferably 5 to 10 slots. However, it should be noted that since the invention does not impose any particular limitation on the number of slots and allows for a wide range of variations, various design possibilities are permitted.

[0033] According to a preferred embodiment of the invention, the distance between (adjacent) slots may be the same or different, and preferably in the range of 0.5 cm to 5 cm, more preferably in the range of 1 cm to 3 cm. The minimum distance is set such that the hammer blades do not interfere with each other when operating in the hammer mill. The maximum distance is set such that there is no large distance between adjacent hammer blades when operating in the hammer mill. Furthermore, the distance between slots, and therefore the distance between adjacent hammer blades disposed in said slots, can vary considerably. This allows for a virtually unlimited number of configuration possibilities.

[0034] The main components also include front and rear portions having corresponding openings for releasably arranging the hammer holder within the hammer mill. These portions longitudinally define the hammer holder. These portions include openings through which hammer pins of the hammer mill can be inserted, thereby arranging the hammer holder in a suitable position within the hammer mill. The front and rear portions are arranged on opposite sides of a bottom region. Preferably, the bottom region has a rectangular shape, and the front and rear portions are arranged on the shorter side of the bottom region.

[0035] The front and rear portions of the main component can have any shape suitable for securing the hammer blade in the hammer blade holder and allowing the hammer blade holder to be connected to the hammer blade pin, as described above. Preferably, the front and rear portions of the main component are designed as flanges.

[0036] Preferably, the front and rear portions of the main components may be flat components arranged at a specific angle in the bottom region, preferably 30° to 90°, more preferably 90°.

[0037] According to a particularly preferred embodiment of the invention, the main component of the hammer holder is made from a single part. Preferably, the single part is selected from the group consisting of: bent sheet metal parts, sheet metal, welded or forged steel, and wire.

[0038] The present invention does not impose any particular limitation on the external size of the hammer holder. Any size hammer holder that allows its placement within the hammer mill is suitable. According to a preferred embodiment of the invention, all hammer holders to be installed in a particular hammer mill have the same dimensions. This allows for a modular design of the hammer mill. According to another preferred embodiment of the invention, different types of hammer holders with different numbers of hammers can be flexibly combined in a particular hammer mill.

[0039] Hammers are arranged in a hammer holder according to the invention, which cause coarse crushing of material in a hammer mill, as discussed above. Such hammers are known and need not be discussed in detail here.

[0040] In the hammer holder according to the invention, a plurality of hammers may be provided, the plurality of hammers being limited by the number of slots in the hammer holder for positioning the hammers therein. According to a preferred embodiment of the invention, one or more, preferably two to 20, more preferably two to 15, and particularly preferably two to seven hammers are provided in the slots.

[0041] Each hammer blade includes at least one opening that aligns with openings in the front and rear portions of the main component of the hammer blade holder when the hammer blade is positioned within a slot in the hammer blade holder. This allows the hammer pins of the hammer mill to be inserted through both the front and rear portions of the main component of the hammer blade holder and any hammer blades disposed therein.

[0042] Using the hammer holder according to the invention, a hammer mill operator can simultaneously remove and reinsert several hammers into an easy-to-use holder (i.e., the hammer holder). By inserting different hammer holders, hammers can be quickly inserted into the machine in modified configurations. No machine modifications are necessary. Because the hammer holder is designed as a separate component, a virtually unlimited number of configuration possibilities are possible. This offers numerous advantages to hammer mill operators in optimizing their process.

[0043] The hammer holder can be assembled / prepared externally to the hammer mill and then installed inside the mill as a complete package. The hammers can be pre-inserted into the holder at the correct spacing. The hammer holder is significantly lighter than conventional equipment, allowing for faster installation within the hammer mill. This helps reduce downtime for hammer mill changes. Hammer sets with different hammer spacings and numbers of hammers can be installed depending on the application (e.g., more hammers can be used for finer granulation). Hammer sets also have more flywheel mass than a single hammer.

[0044] Furthermore, in the hammer holder of the present invention, the hammer can be well accessed and the hammer can be easily cleaned.

[0045] According to a preferred embodiment of the invention, it is also possible to extend the lifespan of the hammers disposed therein by utilizing the hammer holder of the invention. In this preferred embodiment, each hammer includes at least one additional opening. When the other additional hammer holder is disposed on the hammer, the additional opening can be aligned with the openings of the front and rear portions of the main components of the other hammer holder, such that the hammer is disposed within the slots of the hammer holder of the hammer and within the slots of the other hammer holder.

[0046] The package, which includes a hammer holder, a hammer disposed in a slot of the hammer holder, and another hammer holder having a hammer also disposed in a slot of the other hammer holder, can be easily rotated. After the initial hammer holder is removed, the hammer is positioned solely in the slot of the other hammer holder, with the unworn portion of the hammer protruding from the other hammer holder.

[0047] This easy hammer turning is possible because a surface is provided in the bottom region of the hammer holder to prevent any movement of the hammer blade out of the hammer holder through the bottom region.

[0048] As described above, the hammer holder according to the present invention will be installed in the hammer mill.

[0049] Hammer mills are generally known from existing technology. A typical hammer mill has a rotor with a large number of discs arranged on it. Hammers are suspended by pins in the circumferential region of the discs. The rotor is rotated by a drive device (such as a motor).

[0050] The hammer holder according to the invention can be pivotally arranged on the hammer pin. As the rotor rotates, the hammers in the hammer holder move outward in response to centrifugal force, whereby these hammers crush the material impacting them. The crushed material is guided through a screening device, preferably circumferentially surrounding the rotor, and exits the hammer mill through an inlet in the lower region of the hammer mill, while coarser material cannot pass through the screening device and is transferred to a storage container below the rotor.

[0051] The hammer mill according to the invention has a grinding chamber that can be sealed during normal use and the aforementioned rotor arranged in the grinding chamber. This rotor includes a rotor shaft and a plurality of rotor discs that divide the rotor into multiple sections. The rotor discs can be arranged on the rotor shaft at uniform or variable distances from each other. For example, individual rotor discs can be fixed to the rotor shaft by threaded connections.

[0052] The rotor has a plurality of hammer pins for receiving one or more hammer holders according to the invention.

[0053] Individual hammer pins preferably do not extend over all sections. In the preferred embodiment, individual hammer pins do not reach over all sections, thus allowing for easy replacement of the hammer holder.

[0054] The hammer pins can also be rotationally symmetrical and can be detachably fastened to opposing rotor discs that define separate sections on both sides.

[0055] The inner diameter of the opening in the rotor disk that can receive the hammer pin can be larger than the outer diameter of the hammer pin. Therefore, the hammer pin must be completely or partially pulled out from only one opening in the rotor disk. The partially pulled-out hammer pin can then be removed from that section by tilting. The opening in the rotor disk is large enough to allow the hammer pin to be tilted, thereby enabling the hammer pin to move across adjacent rotor disks.

[0056] Preferably, the hammer pins of the sections are arranged circumferentially so as to offset from the hammer pins of adjacent sections. Therefore, the hammer pins can be released and withdrawn more easily.

[0057] One or more segmented discs may be arranged between every two adjacent rotor discs. These segmented discs are specifically designed to provide additional support for the hammer pins; they also have openings through which the hammer pins pass or are guided. Especially at high speeds, the hammer pins are subjected to high stress due to the weight of the hammers and the rotation of the rotor. Because of the use of segmented discs, the hammer pins can be manufactured to a correspondingly smaller size.

[0058] The section discs can be connected to the rotor discs by means of support pins. This connection between the section discs and the rotor discs results in additional stability of the rotor. The support pins can be continuous over all rotor discs. Because these support pins extend over all rotor discs, a simple construction is possible.

[0059] Each hammer pin can accommodate at least one or more hammer holders according to the invention between every two adjacent section discs or rotor discs, or between a section disc and an adjacent rotor disc. The number of hammer holders and the number of hammers to be housed therein are determined by the desired grinding type, rotational speed, mass of the individual hammer, and rotor diameter.

[0060] Each hammer pin may have a cap-like part at its first end for securing the hammer pin in an opening in the rotor disk. Such a cap-like part may be a metal component. The cap-like part may have a substantially cylindrical shape, with its outer diameter substantially corresponding to the inner diameter of the opening in the rotor disk. Therefore, the cap-like part can be precisely fitted into or can be accommodated in the corresponding opening in the rotor disk. Such cap-like parts are known from WO 2011 / 086035 A2.

[0061] It is also conceivable that the hammer pin has a second cap at its second end, which can be fixedly connected, for example, to another rotor disc.

[0062] If a fixing device is used to lock the rotor of the hammer mill into place, the hammer holder according to the invention can be easily replaced by an operator. Such a fixing device is described in WO 2011 / 086035 A2.

[0063] In the hammer mill of the present invention, at least one door can be provided to enclose the grinding chamber. The door can be displaceably mounted on a roller track arranged parallel to the rotor axis by means of rollers. The rollers are mounted on roller shafts fastened to the door, the roller shafts extending perpendicular to the roller track. The rollers can be axially displaceable on these roller shafts between an open position and a closed position. Such rollers displaceable on the roller shafts allow for simple and space-saving release of the hammer mill door, so that it can then be easily moved to the side. This configuration provides high stability without requiring significant cost or complex rotation or hinge mechanisms. The rollers can be biased into the open position on the roller shafts by a pressing device. This facilitates displacement from the closed position. For example, a spring assembly is conceivable pressing device. The door can have an additional closing device that allows the rollers to be displaced into the closed position against the force applied by the pressing device. Such a closing device is, for example, a simple pull rod. Other closing devices are also conceivable. Attached Figure Description

[0064] The invention will now be described in more detail with reference to non-limiting examples and accompanying drawings.

[0065] Figure 1a A schematic diagram of a first embodiment of the hammer holder according to the present invention is shown.

[0066] Figure 1b A schematic diagram of a second embodiment of the hammer holder according to the present invention is shown.

[0067] Figures 2a to 2c Different configurations of a hammer holder equipped with a different number of hammer blades according to the present invention are shown.

[0068] Figures 3a to 3c An embodiment of the steering wear hammer of the present invention is shown.

[0069] Figure 4 A perspective view of a hammer mill according to the present invention is shown.

[0070] Figure 5 It shows that according to Figure 4 A perspective view of the rotor disk and section disk in the grinding chamber of a hammer mill.

[0071] Figure 6 A schematic diagram of an embodiment of a hammer holder having an opening in the bottom region according to the present invention is shown. Detailed Implementation

[0072] In the accompanying drawings, the same reference numerals denote the same parts.

[0073] Figure 1aA schematic diagram of a first embodiment of a hammer holder 1 according to the present invention is shown. The hammer holder 1 includes a main component 2. The main component 2 includes a bottom region 2a, which has a rectangular shape. The bottom region 2a has a substantially closed flat surface with a small opening (see...). Figure 6 A side region 2b is arranged on the longer side of the bottom region 2a, and a slot 3 is provided in the side region. The side region 2b has a wavy shape, wherein the slot 3 arranged above the bottom region 2a extends in each part of the side region 2b.

[0074] Furthermore, the main component 2 includes a front portion 2c and a rear portion 2d, which are arranged on the shorter side of the rectangular bottom region 2a. Openings 4a and 4b for inserting a hammer pin 18 (not shown) are provided in the front portion 2c and the rear portion 2d.

[0075] exist Figure 1a In one embodiment, the main component 2 is made of a single bent sheet of metal.

[0076] Figure 1b A schematic diagram of a second embodiment of the hammer holder 1 according to the present invention is shown. The hammer holder 1 includes a main component 2. The main component 2 includes a bottom region 2a, which has a rectangular shape. The bottom region 2a has a flat surface with an opening small enough that the hammer 5 may not protrude through the opening.

[0077] Furthermore, the main component 2 includes a front portion 2c and a rear portion 2d, which are arranged on the shorter side of the rectangular bottom region 2a. Openings 4a and 4b for inserting a hammer pin 18 (not shown) are provided in the front portion 2c and the rear portion 2d.

[0078] Furthermore, the main component 2 includes a top region 2e, which has a rectangular shape with a curved surface. This surface has a saddle-shaped shape, with its center rising relative to the side portions of the top region. The top region 2e is defined by a front portion 2c and a rear portion 2d. A slot 3 is arranged in the top region 2e. The slot 3 is laterally closed.

[0079] Between each slot 3, an intermediate portion 2f is provided, extending (and connecting) from the top region 2e to the bottom region 2b. In this embodiment, the intermediate portion has a flat shape with a width that decreases from the top region 2e to the bottom region 2b. An opening 4c is provided in the intermediate portion 2f for inserting a hammer pin 18 (not shown). The opening 4c is aligned with openings 4a and 4b in the front portion 2c and the rear portion 2d to allow the hammer pin 18 (not shown) to be inserted simultaneously through the front portion 2c, the rear portion 2d, and the intermediate portion 2f.

[0080] Figures 2a to 2c Different exemplary and non-limiting configurations of the hammer holder 1 equipped with different numbers of hammer blades 5 according to the present invention are shown. Figures 2a to 2c The embodiment of the hammer holder 1 shown corresponds to that in Figure 1a The implementation scheme shown is illustrated. However, it should be understood that... Figure 1a The embodiment of the hammer holder 1 shown can be used in the same manner.

[0081] exist Figure 2a In one embodiment, three hammer blades 5 are positioned in non-adjacent slots 3, i.e., each hammer blade 5 has an empty slot 3 between it. Each hammer blade 5 includes an opening 5a, which is aligned with the openings 4a and 4b of the front and rear portions 2c and 2d of the main parts 2 of the hammer blade holder 1.

[0082] exist Figure 2b In one embodiment, four hammer blades 5 are positioned in non-adjacent slots 3, i.e., there is an empty slot 3 between each hammer blade 5. Each hammer blade 5 includes an opening 5a, which is aligned with the openings 4a and 4b of the front and rear portions 2c and 2d of the main parts 2 of the hammer blade holder 1.

[0083] exist Figure 2c In one embodiment, seven hammer blades 5 are positioned in adjacent slots 3, i.e., there are no empty slots 3. Each hammer blade 5 includes an opening 5a, which is aligned with the openings 4a and 4b of the front and rear portions 2c and 2d of the main parts 2 of the hammer blade holder 1.

[0084] Figures 3a to 3c An embodiment of the steering wear hammer 5 of the present invention is shown. The hammer 5 is disposed in the hammer holder 1 as described above, that is, the opening 5a of the hammer is aligned with the openings 4a and 4b of the front and rear portions 2c and 2d of the main parts 2 of the hammer holder 1.

[0085] In the embodiment, each hammer blade 5 includes an additional opening 5b.

[0086] exist Figure 3bIn this arrangement, another hammer holder 1' is positioned on the free side of the hammer 5, wherein the openings 4a' and 4b' (the latter not shown) of the front and rear portions 2c' and 2d' (the latter not shown) of the main component 2' of the other hammer holder 1' are aligned with the additional opening 5b. The hammer 5 is arranged in the slot 3' of the other hammer holder 1'.

[0087] like Figure 3b As indicated by the arrow, the package consisting of hammer holders 1, 1' and hammers 5 arranged therein can then be turned so that hammer holder 1 rises while the other hammer holder 1' falls.

[0088] exist Figure 3c In this configuration, hammer holder 1 has been removed, leaving hammer 5 housed solely in another hammer holder 1'. The unworn side of hammer 5 now protrudes from the other hammer holder 1'.

[0089] Figure 4 A perspective view of a hammer mill 6 according to the invention is shown. The hammer mill 1 has a rotor (not shown here) equipped with one or more hammer holders 1 (not shown here) according to the invention. The rotor is located in a grinding chamber surrounded by a housing 10. The housing 10 is designed to prevent undesirable leakage of mill feed into the external environment during operation. The drive unit for the rotor is located on the side of the hammer mill 6 facing the observer.

[0090] At least one door 8 is configured for maintenance operations and can be displaced in direction f for opening. For this purpose, door 8 has an upper roller 9 and a lower roller 9', which can roll on roller tracks 7, 7' arranged parallel to the rotor axis during displacement movement. The roller track 7 assigned to the lower roller 9 is an integrated component of the machine table 13, on which the hammer mill 6 is mounted. Two roller tracks 7', extending parallel to the rotor axis R in the form of guide rods, are provided for the upper roller 9'. Furthermore, in Figure 4 The closing device 11 can be seen, which is used to fix the door 8 in the closed position.

[0091] according to Figure 6 The roller mill 6 includes an inlet 12 for introducing abrasive material into the grinding chamber, which is surrounded by a housing 10.

[0092] Figure 5 It shows that according to Figure 4 A perspective view of the rotor disk 15 and section disks 16a, 16b, and 16c in the grinding chamber of the hammer mill 6. The grinding chamber is constructed according to... Figure 4 The hammer mill 6 is surrounded by the housing 10.

[0093] A rotor 14 is disposed in the grinding chamber. The individual components of the rotor 14 are preferably made of a metallic material (preferably steel). The rotor 14 has a rotor shaft 17 arranged coaxially with the rotor axis R. The rotor has two rotor disks 15 defining end faces, the first rotor disk of which... Figure 5 As can be seen, segment disks 16a, 16b, and 16c are arranged between the end face rotor disks 15, thereby dividing the rotor into multiple segments and providing further support. The rotor 14 can have multiple segments, such as three, four, or more, depending on the purpose. It is also conceivable to arrange a single central segment disk to define two segments.

[0094] The segment discs 16a, 16b, and 16c preferably have a reduced outer diameter in the region of the hammer pin 18 of adjacent segments, and therefore, the hammer pins 18 of adjacent segments are not obstructed by the support rings 16a, 16b, and 16c when withdrawn. Since the segment discs 16a, 16b, and 16c are connected to the rotor disc 15 by means of support pins 19, a stable and robust design is achieved. Unlike the hammer pins 18, the support pins 19 preferably extend over the entire length of the rotor and thus cover all segments of the rotor 14.

[0095] Each segment has hammer pins 18 distributed around its circumference. Individual hammer pins 18 do not necessarily extend over the entire rotor 14, but preferably only over one to three segments. For example, the hammer pins 18 may thus extend only from the rotor disk 15 as far as the segment disk 16c. The hammer pins 18 can be inserted through openings in the rotor disk 15, such as... Figure 5 As shown by the arrow in the image.

[0096] As described above, one or more hammer holders 1 according to the present invention can be arranged on the hammer pin 18. For better understanding, in Figure 5 Only one rotor retainer 1 is shown. As mentioned above, multiple hammer retainers 1 can be arranged on the rotor 14, each hammer retainer preferably having the same external dimensions to allow for a modular design of the hammer mill. As mentioned above, the multiple hammer retainers 1 can have the same or varying distances between the slots 3 of the hammer retainer 1.

[0097] Figure 6 A schematic diagram of an embodiment of the hammer holder 1 according to the present invention, having openings 20, 21 in the bottom region 2a, is shown. The openings 20, 21 can be holes 20 or slits 21 extending in the longitudinal direction of the hammer holder 1. The diameter of the holes 20 and the width of the slits 21 are such that no hammer can pass through them.

Claims

1. A hammer holder (1) for a hammer mill (6), the hammer holder comprising a main part (2) having a bottom region (2a) and a slot (3) for positioning a hammer (5) in the hammer holder (1), and the bottom region (2a) including a surface preventing any movement of the hammer (5) out of the hammer holder (1) through the bottom region (2a), and wherein the main part (2) further includes a front portion and a rear portion (2c, 2d) having corresponding openings (4a, 4b) for releasably arranging the hammer holder (1) in the hammer mill (6).

2. The hammer holder according to claim 1, characterized in that, The main component (2) includes a side region (2b) in which the slot (3) is provided for positioning the hammer (5) in the hammer holder (1).

3. The hammer holder according to claim 1, characterized in that, The main component (2) includes a top region (2e) in which the slot (3) is provided for positioning the hammer (5) in the hammer holder (1).

4. The hammer holder according to claim 3, characterized in that, An intermediate portion (2f) is provided between the slots (3) in the top region (2e), the intermediate portion extending from the top region (2e) to the bottom region (2b).

5. The hammer holder according to any one of claims 1 to 4, characterized in that, The main component (2) is made from a single part.

6. The hammer holder according to any one of claims 1 to 4, characterized in that, The surface of the bottom region (2a) that prevents the hammer from moving out of the hammer holder (1) through the bottom region (2a) is a surface including openings (19, 20) that are too small for any hammer (5) to penetrate.

7. The hammer holder according to any one of claims 1 to 4, characterized in that, The hammer holder (1) includes 2 to 20 slots (3).

8. The hammer holder according to any one of claims 1 to 4, characterized in that, The front and rear portions (2c, 2d) of the main component (2) are designed as flanges.

9. The hammer holder according to claim 1, characterized in that, The hammer blade (5) includes at least one opening (5a) which is aligned with the openings (4a, 4b) of the front and rear portions (2c, 2d) of the main component (2) when the hammer blade (5) is arranged in the slot (3) of the hammer blade holder (1).

10. The hammer holder according to claim 9, characterized in that, The hammer blades (5) each include at least one additional opening (5b), which aligns with the openings (4a', 4b') of the front and rear portions (2c', 2d') of the main component (2') of the other hammer blade holder (1') when the hammer blades (5) are arranged in the slot (3') of the other hammer blade holder (1').

11. The hammer holder according to claim 5, characterized in that, The individual component is selected from the group consisting of sheet metal and wire.

12. The hammer holder according to claim 5, characterized in that, The individual part is a bent sheet metal part.

13. The hammer holder according to claim 6, characterized in that, The surface is a flat surface.

14. The hammer holder according to claim 7, characterized in that, The hammer holder (1) includes 4 to 15 slots (3).

15. The hammer holder according to claim 7, characterized in that, The hammer holder (1) includes 6 to 12 slots (3).

16. A hammer mill (6), the hammer mill comprising at least one hammer holder (1) according to any one of claims 1 to 15.

17. The hammer mill according to claim 16, characterized in that, The hammer mill (6) includes multiple hammer holders (1), each having the same external size.

18. The hammer mill according to claim 16 or 17, characterized in that, One or more of the said hammer holders (1) are disposed at the rotor (14), which has a rotor shaft (17) and is rotatable about axis R.

19. The hammer mill according to claim 16 or 17, characterized in that, One or more of the hammer holders (1) are disposed in the hammer mill (6) at at least one hammer pin (18).

20. The hammer mill according to claim 19, characterized in that, The at least one hammer pin (18) is disposed in the opening of the rotor disk (15) and at least one section disk (16a, 16b, 16c).

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