TWI813060B - crushing device - Google Patents

Abstract

[Problem] The subject of the present invention is to provide a crushing device provided with a scraper that can suppress the falling of uncrushed objects and suppress the retention of processing target objects. [Solution] In order to solve the above problem, there is provided a crushing device including a scraper in a crushing device having a crushing blade composed of a cutter portion and a spacer, and the scraper has an inclined portion toward the spacer when viewed from the side of the device. There is an area where the inclined portion overlaps with the upper side of the partition portion when viewed from directly above the inlet for inserting the object to be processed. Thereby, since there is an area where the inclined portion provided on the scraper overlaps with the upper side of the partition, the object to be processed slides off the inclined portion and moves efficiently in the rotation direction of the partition. Therefore, the function of suppressing the falling of uncrushed objects and suppressing the accumulation of the processing target objects can be provided to the scraper.

Description

crushing device

The present invention relates to a crushing device for crushing an object to be processed.

Generally, as one of the mechanisms for processing processing objects such as waste discharged from homes, factories, etc., a crushing device that crushes the processing objects into a certain size is known.

As such a crushing device, one having a plurality of rotating blades is known. Furthermore, such a crushing device may be provided with a structure that prevents the object to be processed from falling between the rotating blade and the housing when crushing the object to be processed. For example, Patent Document 1 describes that a spacer is disposed between a plurality of rotating blades provided in a crushing device, and an anti-fall plate is disposed in the gap between the spacer and the outer casing to prevent uncrushing. The falling of things. [Prior technical literature]

[Patent Document 1] Japanese Patent Application Publication No. 2005-319545

[Problem to be solved by the invention]

As shown in Patent Document 1, it is known that a crushing device is provided with a structure that suppresses the falling of uncrushed objects. However, when the anti-fall plate as shown in Patent Document 1 is provided, there is a problem that the object to be processed remains on the anti-fall plate and the crushing process by the rotating blade cannot be performed. Therefore, it is necessary to provide a structure that can suppress the falling of uncrushed objects and suppress the accumulation of processing target objects.

Furthermore, there is also known a crushing device in which a spacer is provided between the rotating blades and a scraper is provided for scraping the object to be processed sandwiched between the spacers. The scraper is positioned close to the spacer. Therefore, the scraper can be provided not only with a function of scraping the object to be processed, but also with other functions such as a function of suppressing the falling of uncrushed objects.

Therefore, an object of the present invention is to provide a crushing device provided with a scraper that can suppress the falling of uncrushed objects and suppress the accumulation of processing target objects. [Technical means to solve problems]

As a result of intensive research on the above-mentioned subject, the inventors found that by setting the arrangement and structure of the scraper to be inclined toward the partition and overlapped above the partition, the object to be processed can be efficiently moved toward the blade portion. and the partition side movement, thereby suppressing the falling of uncrushed objects and suppressing the accumulation of processing target objects, and completed the present invention.

The crushing device of the present invention to solve the above problems is a crushing device having a crushing blade composed of a cutter part and a partition part, and is characterized by having a scraper for scraping off the attachments attached to the partition part, from the side of the device. When viewed from above, the scraper has an inclined portion facing the partition. When viewed from directly above the inlet for inserting the object to be processed, the inclined portion of the scraper overlaps with the partition, and the inclined portion of the scraper overlaps above the partition. area. According to this feature, the scraper that is provided to scrape off the attachments attached to the partition is arranged so as to satisfy the space (clearance) between the crushing blade and the housing, thereby suppressing the falling of uncrushed objects and allowing the object to be processed to pass through the inclined portion of the scraper. The spacer has slipped. Furthermore, by providing an area where the inclined portion of the scraper overlaps with the upper side of the partition, the object to be processed that has slipped from the inclined portion can move efficiently in the rotation direction of the partition. Thereby, the function of suppressing the falling of uncrushed objects and suppressing the accumulation of the processing target objects can be given to the scraper.

Furthermore, as an embodiment of the crushing device of the present invention, it is characterized in that the angle formed by the straight line with respect to the horizontal line passing through the center of the crushing blade is 10 to 20 degrees, and the straight line connects the extension line of the inclined portion of the scraper and the horizontal line passing through the center of the crushing blade. The intersection point of the spacer part and the center of the crushing blade. According to this feature, by specifying the above-mentioned angle, the width of the area in which the inclined portion and the spacing portion of the scraper overlap can be specified. Furthermore, by defining the above-mentioned angle within a specific range, it is possible to form a region suitable for suppressing the falling of uncrushed objects and suppressing the retention of the object to be processed, so that the effects of the present invention can be further exerted.

Furthermore, an embodiment of the crushing device of the present invention is characterized in that the angle formed by the inclined portion of the scraper with respect to the vertical direction of the device is 45 degrees or less. According to this feature, by setting the above-mentioned angle within a specific range, a structure suitable for suppressing the retention of the object to be processed on the inclined portion of the scraper can be formed, and the effects of the present invention can be further exerted.

Furthermore, an embodiment of the crushing device of the present invention is characterized in that the scraper also has an area overlapping the lower part of the partition when viewed from directly above the input port for inputting the object to be processed. According to this feature, not only the upper part of the partition part but also the lower part of the partition part can be provided with the function of scraping off adhering matter to the scraper. Thereby, the function of the scraper can be improved.

Furthermore, an embodiment of the crushing device of the present invention is characterized in that the scraper has a surface that is uniformly continuous in the width direction of the device when viewed from directly above the input port for inputting the object to be processed. According to this feature, since the scraper has a continuous surface in the width direction of the device, it is possible to further suppress the falling of uncrushed objects. In particular, since the object to be processed does not fall or get stuck in the gap between the inclined portions, the movement of the object to be processed does not stop midway. Thereby, the object to be processed can be smoothly slid toward the crushing blade, and the effects of the present invention can be further exerted. [Effects of the invention]

According to the present invention, it is possible to provide a crushing device including a scraper that can suppress uncrushed objects from falling and suppress processing target objects from being retained.

Hereinafter, embodiments of the crushing device of the present invention will be described with reference to the drawings. In addition, the embodiment shows an example of the crushing device. The crushing device of the present invention is not limited to the embodiment, and the crushing device of the embodiment can be modified within the scope that does not change the gist of the claims.

The crushing device in the present invention may be a device that crushes an object to be processed and has a cutter part and a spacer part as a crushing blade. In addition, in the following embodiment, the structure which has a twin-shaft type crusher is demonstrated, However, it is not limited to this.

The object to be processed to be crushed by the crushing device of the present invention is not particularly limited. Examples include general waste discharged from homes, factories, etc., industrial waste, sewage residue, and the like. In particular, those which are sticky or composed of fibers and which tend to remain around the periphery of the crushing blade when put into the crushing device can be preferably used as the object to be processed in the present invention.

[First implementation mode] FIG. 1 is a schematic explanatory diagram showing the structure of a crushing device 1A according to the first embodiment of the present invention. Fig. 1(A) is a side view, and Fig. 1(B) is a plan view viewed from above.

[Broken device] As shown in FIG. 1(A) , a crushing device 1A according to the first embodiment of the present invention includes a drive motor 2 , a drive shaft 5 a driven by the drive motor 2 , and a driven shaft 5 b that transmits the rotational power of the drive shaft 5 a. Drive; a plurality of crushing blades 6 arranged around the driving shaft 5a and the driven shaft 5b; and a scraper 7A. Furthermore, the crushing device 1A is provided with a casing 3 for accommodating a cutter unit 4a composed of a combination of a crushing blade 6 and a drive shaft 5a, and a cutter unit 4b composed of a combination of a crushing blade 6 and a driven shaft 5b. . Hereinafter, each structure related to the crushing device 1A of this embodiment is demonstrated.

[Drive motor] The drive motor 2 is used to rotate the crushing blade 6 by transmitting rotational power to the drive shaft 5a. As the rotation mechanism of the drive motor 2, any mechanism can be used. Examples include electric motors, hydraulic motors, hydraulic motors, and pneumatic motors.

[Drive shaft] The drive shaft 5 a is a shaft member rotated by the rotational power of the drive motor 2 . Moreover, the crushing blade 6 is arrange|positioned around the drive shaft 5a, and as the drive shaft 5a rotates, the crushing blade 6 rotates at a predetermined speed. The drive shaft 5a may have a shape that is fixed to the surrounding crushing blades 6. For example, the drive shaft 5a may be provided with protrusions and the crushing blades 6 may be provided with recesses, and the protrusions and recesses may be fitted into the shape. The combined structure may be a structure in which the drive shaft 5a has a polygonal cross-section, and a shaft hole of approximately the same polygonal shape as the drive shaft 5a is provided at the center of the crushing blade 6 for engagement.

[driven shaft] The driven shaft 5b is a shaft member that transmits the rotational power of the drive motor 2 via the drive shaft 5a and rotates. Moreover, like the drive shaft 5a, the crushing blade 6 is arrange|positioned around the driven shaft 5b, and as the driven shaft 5b rotates, the crushing blade 6 rotates at a predetermined speed. In addition, the shape regarding the fixation of the driven shaft 5b and the crushing blade 6 is not particularly limited. For example, the structure may be the same as the shape related to the fixation of the drive shaft 5a and the crushing blade 6.

The mechanism for transmitting rotational power from the drive shaft 5a to the driven shaft 5b is not particularly limited, but examples thereof include a mechanism in which a pulley provided at the upper end of each shaft is connected with a belt, or a mechanism in which a gear is connected. In addition, in this embodiment, the rotation shaft which rotates the crushing blade 6 is shown to consist of the drive shaft 5a and the driven shaft 5b, but it is not limited to this. For example, one could cite the use of independent drivers for each axis. In addition, the relationship between the rotational speeds of the drive shaft 5a and the driven shaft 5b is not particularly limited. For example, the drive shaft 5a and the driven shaft 5b may be rotated at different speeds or the drive shaft 5a and the driven shaft 5b may be rotated at the same speed. The relationship between the rotational speed of the rotational shaft can be appropriately set taking into account the ease of structural design of the transmission mechanism of the rotational power, the amount of electric power usage related to driving, and the like.

[Broken Blade] The crushing blade 6 is configured by concentrically overlapping a disc-shaped cutter portion 61 and a spacer portion 62 having a smaller diameter than the cutter portion 61 . Furthermore, the cutter part 61 and the spacer part 62 may be formed integrally or separately. Regarding the "integrated body" mentioned here, in addition to the combination of one cutter portion 61 and one spacer portion 62 to form an integrated body, it can also be a combination of a plurality of cutter portions 61 and spacer portions 62 that are alternately laminated. An integrated one or a combination of a plurality of cutter portions 61 and a plurality of spacer portions 62 are formed into one body. Thereby, for example, when the cutter part 61 and the spacer part 62 are integrated, the number of parts can be reduced and the workability related to assembly can be improved. On the other hand, when the cutter portion 61 and the spacer portion 62 are formed separately, when the specifications of the cutter portion 61 or the spacer portion 62 are changed, or when there is a defect in either the cutter portion 61 or the spacer portion 62, it is necessary to In the case of replacement, it is easy to perform replacement-related processing.

As shown in FIG. 1(B) , the crushing blades 6 are respectively arranged around the drive shaft 5a and the driven shaft 5b so that a plurality of crushing blades 6 are laminated to form the cutter unit 4a and the cutter unit 4b. The cutter unit 4a and the cutter unit 4b are provided inside the housing 3 so that the cutter part 61 of one cutter unit engages with the gap formed by the space|interval part 62 of the other cutter unit.

Moreover, as shown in FIG. 1(B) , when viewed from the upper part of the crushing device 1A, the cutter unit 4a rotates counterclockwise and the cutter unit 4b rotates clockwise. Then, when the object to be processed is thrown in from above the crushing device 1A, the object to be processed passes between the cutter unit 4 a and the cutter unit 4 b and is cut by the cutter portion 61 of the crushing blade 6 .

The material of the crushing blade 6 is not particularly limited, but examples thereof include metal materials such as tool steel, chromium-molybdenum steel, and stainless steel, and ceramic materials such as alumina, zirconium dioxide, and silicon nitride. From the viewpoint of high strength and resistance to breakage, it is better to use metal materials such as tool steel, chromium-molybdenum steel, or stainless steel.

[Shell] The housing 3 accommodates the cutter unit 4a and the cutter unit 4b described above. Moreover, as shown in FIG. 1(A) , the housing 3 is formed with an input port 3a for inserting the processing object in the upper part (the upper side in the illustration), and is formed with the discharge processing object (crushed object) in the lower part (the lower side in the illustration). The outlet 3b.

[scraper] When processing the object to be processed, the scraper 7A has a function of scraping off the attachments wrapped around the partition portion 62 . In addition, the scraper 7A in this embodiment has the function of suppressing the falling of uncrushed objects and suppressing the retention of the thrown-in processing object, and moving the object smoothly toward the crushing blade 6 side.

As shown in FIG. 1(A) , the scraper 7A has an inclined portion 70 inclined toward the partition portion 62 . In addition, the scraper 7A is provided on both sides of the side wall 31 of the housing 3 . Moreover, as shown in FIG. 1(B), the scraper 7A is arrange|positioned between the cutter parts 61 of the cutter unit 4a, and is provided close to the space part 62 arrange|positioned between the cutter parts 61. Thereby, the scraper 7A in this embodiment can satisfy the space (gap) between the cutter unit 4a and the cutter unit 4b and the housing side wall 31. Therefore, while the scraper 7A in this embodiment scrapes off the attachments attached to the partition portion 62, uncrushed objects are suppressed from falling from the cutter unit 4a, 4b side to the discharge port 3b side.

FIG. 2 is a schematic explanatory view (side view and top view) of the vicinity of the scraper 7A in this embodiment. In addition, FIG. 2 shows the structure of the partition part and the scraper on the drive shaft 5a side. In addition, the upper part of Fig. 2 is a side view, and the lower part of Fig. 2 is a plan view viewed from above.

As shown in FIG. 2 , the inclined portion 70 of the scraper 7A in this embodiment is inclined toward the partition portion 62 . In addition, when viewed from directly above the input port 3 a into which the object to be processed is inserted, the inclined portion 70 forms an area A1 overlapping the upper portion of the partition portion 62 . Thereby, the object to be processed inserted from the input port 3 a can slide down from the inclined portion 70 . Furthermore, by forming the area A1, the object to be processed that has slipped from the inclined portion 70 can move efficiently in the rotation direction of the cutter units 4a and 4b (the crushing blade 6). Therefore, the scraper 7A in this embodiment can suppress the retention of the object to be processed.

The slope of the inclined portion 70 of the scraper 7A in this embodiment is particularly related to the suppression of retention of the object to be processed, that is, the efficiency of movement of the object to be processed. Therefore, in order to fully obtain the effects of the present invention, the slope of the inclined portion 70 is preferably determined.

As a method of defining the slope of the inclined portion 70, as shown in Fig. 2, there is a method of defining the angle θ1 formed by the straight line L1 with respect to a horizontal line passing through the center (axis center 5c) of the crushing blade 6. The straight line L1 connects The intersection point P where the extension line L2 of the inclined portion 70 intersects the partition portion 62 and the center of the crushing blade 6 is the axis 5 c.

Among them, the angle θ1 is preferably 10 degrees or more. For example, when the angle θ1 is less than 10 degrees, the following problem occurs: the area of the area A1 where the scraper 7A and the partition 62 overlap is narrowed, so the object to be processed that has slipped to the partition 62 side is likely to remain in the scraper 7A and the partition. Wait between 62. In addition, the angle θ1 is preferably 20 degrees or less. For example, when the angle θ1 is larger than 20 degrees, the area of the region A1 where the scraper 7A overlaps the partition 62 becomes wider. On the other hand, the width W of the opening in the cutter units 4a, 4b becomes smaller. As shown in FIG. 1 , the width W of the opening refers to the width at which the blade of the cutter portion 61 is exposed to the object to be processed when viewed from the insertion port 3 a side. If the width W of the opening becomes small, the object to be processed may stagnate in the scraper 7A, and as a result, the object to be processed may remain.

As described above, by specifying the angle θ1, the width of the area A1 in which the inclined portion and the spacing portion of the scraper overlap can be specified. Furthermore, by setting the angle θ1 within a specific range, it is possible to form an area A1 suitable for suppressing the falling of uncrushed objects and suppressing the retention of the processing target objects, so that the effects of the present invention can be further exerted.

As another method of defining the slope of the inclined portion 70 , as shown in FIG. 2 , there is a method of defining the angle θ2 formed by the inclined portion 70 of the scraper 7A with respect to the vertical direction of the crushing device 1A.

Among them, the angle θ2 is preferably 45 degrees or less. For example, when the angle θ2 is greater than 45 degrees, there is a problem that a sufficient inclination required for the object to be processed cannot be obtained to slide off the inclined portion 70 , causing the object to be processed to remain on the inclined portion 70 .

As described above, by setting the angle θ2 within a specific range, a structure suitable for suppressing the accumulation of the object to be processed on the inclined portion 70 of the scraper 7A can be formed, and the effects of the present invention can be further exerted.

Either one of the angle θ1 and the angle θ2 may be specified, or both may be specified. Even in the case where the angle θ1 or the angle θ2 is specified individually, effects can be obtained by specifying each angle. Furthermore, as the scraper 7A in this embodiment, it is preferable to specify both the angle θ1 and the angle θ2. Thereby, the effect of suppressing the falling of uncrushed objects and suppressing the retention of the object to be processed by the scraper 7A can be fully exerted.

In addition, as shown in FIGS. 1 and 2 , the scraper 7A in this embodiment is configured such that the inclined portion 70 is directly connected to the side wall 31 of the housing 3 and there is no horizontal surface between the side wall 31 and the scraper 7A. The shape and configuration are better. Furthermore, it is more preferable to adopt a shape and arrangement such that the insertion opening 3a of the housing 3 and the inclined portion 70 are continuously connected. Thereby, the object to be processed can slide toward the crushing blade 6 side more reliably. This can prevent the processing target object from remaining.

As described above, in the crushing device 1A of this embodiment, the scraper has an inclination toward the partition when viewed from the side of the device, and the scraper is disposed so as to be viewed from directly above the inlet into which the object to be processed is put. There is an area where the inclined portion of the scraper overlaps with the upper side of the spacer portion. Moreover, the scraper is disposed so as to satisfy the space (clearance) between the crushing blade and the casing. Thereby, the object to be processed can be made to slide toward the partition part via the inclined part of the scraper while suppressing the fall of uncrushed objects. Furthermore, by providing an area where the inclined portion of the scraper overlaps with the upper side of the partition, the object to be processed that has slipped from the inclined portion can move efficiently in the rotation direction of the partition. Therefore, according to the crushing device 1A of this embodiment, the function of suppressing the falling of uncrushed objects and suppressing the accumulation of the processing target objects can be provided to the scraper.

[Second Implementation Mode] FIG. 3 is a schematic explanatory diagram showing the structure of the crushing device in the second embodiment of the present invention. In addition, FIG. 3 shows the structure of the partition part and the scraper on the drive shaft 5a side. In addition, the upper part of FIG. 3 is a plan view viewed from above, the middle part of FIG. 3 is a side view, and the lower part of FIG. 3 is a plan view viewed from below.

Regarding the crushing device 1B in this embodiment, in the crushing device 1A in the first embodiment, when viewed from directly above the input port 3a where the object to be processed is input, as the scraper 7B, in addition to the first embodiment, In addition to the scraper 7A, there is also an area A2 overlapping the lower part of the partition 62 . In addition, description of the structure of the crushing device 1B in this embodiment that is the same as the structure of the crushing device 1A in the first embodiment will be omitted.

The scraper 7B in this embodiment is composed of a first scraper 72 (corresponding to the scraper 7A in the first embodiment) and a second scraper 74. The first scraper 72 is provided with an inclined portion 71 and is inserted from the object to be processed. When viewed from directly above the input port 3a, an area A1 is formed that overlaps with the upper side of the partition 62. The second scraper 74 is provided with a scraping portion 73, and when viewed from above the device, forms an area A1 that overlaps with the lower side of the partition 62. Area A2.

The first scraper 72 in this embodiment can have the same structure as the scraper 7A in the first embodiment, and description thereof is omitted.

On the other hand, the second scraper 74 in this embodiment has a scraping portion 73 that comes into contact with the attachment wrapped around the partition 62, and is provided lower than the axis 5c of the drive shaft 5a of the partition 62. side (direction of gravity). Moreover, as shown in FIG. 3 , the second scraper 74 forms an area A2 overlapping the lower part of the partition 62 when viewed from directly above the input port 3 a for inputting the object to be processed. Thereby, the scraping part 73 can be arrange|positioned so that it may oppose the rotation direction of the partition part 62, and the function as the scraper 7B can be strengthened.

FIG. 3 shows that the scraper 7B in this embodiment is divided into two parts: a first scraper 72 and a second scraper 74. However, the scraper 7B is not limited to this. For example, as the scraper 7B, the structures of the first scraper 72 and the second scraper 74 may be integrated. This can improve the strength of the scraper blade 7B. Furthermore, by increasing the contact area between the side wall 31 and the scraper 7B, the fixing strength of the housing 3 and the scraper 7B can be improved.

As described above, in the crushing device 1B in this embodiment, by providing the overlapping areas A1 and A2 as the scraper in the up-and-down direction of the partition, in addition to suppressing the falling of uncrushed objects and suppressing the processing objects by the scraper, In addition to the retention of materials, it can also improve the scraping performance of the scraper. Thereby, the function of the scraper can be improved.

[Third Implementation Mode] FIG. 4 is a schematic explanatory diagram showing the structure of the crushing device in the third embodiment of the present invention. In addition, FIG. 4(A) is a side view, and FIG. 4(B) is a top view viewed from above. In addition, in FIG. 4 , the illustration of the drive motor is omitted.

Regarding the crushing device 1C in this embodiment, in the crushing device 1A in the first embodiment, when viewed from directly above the input port 3a into which the object to be processed is input, the scraper 7C is in the first embodiment. The upper surface of the middle scraper 7A is provided with a surface 75 that is uniformly continuous in the width direction of the crushing device 1C. In addition, description of the structure of the crushing device 1C in this embodiment that is the same as the structure of the crushing device 1A in the first embodiment will be omitted.

The scraper 7C in this embodiment is provided with a surface 75 on the upper portion of the inclined portion 70 . As shown in FIG. 4(B) , the surface 75 is provided so as to cover the inclined portion 70 in the width direction of the crushing device 1C. Thereby, there is no gap between the inclined portions 70 in the width direction of the crushing device 1C, that is, the axial direction of the rotation shaft (the drive shaft 5a and the driven shaft 5b). Therefore, the object to be processed can slide down smoothly without stopping midway on the surface 75. , thereby effectively suppressing the retention of the processing target object.

The surface 75 only needs to be provided on the upper portion of the inclined portion 70 and does not need to cover the entire inclined portion 70 . For example, as shown in FIG. 4(B) , it may extend from the side wall 31 side of the housing 3 to just in front of the cutter part 61 . Thereby, without affecting the driving of the cutter unit 4a and the cutter unit 4b, it is possible to suppress the falling of uncrushed objects and to suppress the accumulation of the processing target objects.

The surface 75 may be surface-treated in order to suppress the retention of the object to be processed or to improve the moving efficiency of the object to be processed. For example, the surface 75 may be a smooth surface (mirror surface) without protrusions or a coating may be applied to form a smooth surface. Moreover, as shown in FIG. 4(B) , when the surface 75 has a structure such that it does not contact the cutter portion 61 , the surface 75 only needs to be durable relative to the weight of the object to be processed. Therefore, a plastic material with a smooth surface can be used as the surface 75 . Thereby, the object to be processed can be efficiently slid off the scraper 7C and moved to the crushing blade 6 side, and the weight of the scraper 7C can be reduced, thereby suppressing a significant impact on the fixing strength related to the installation, thereby making it easy to design the device.

As described above, in the crushing device 1C in this embodiment, the scraper has a surface that is uniformly continuous in the width direction of the device when viewed from directly above the input port for inputting the object to be processed, so that it is possible to further suppress failure. The falling of broken objects. In particular, since the object to be processed does not fall or get stuck in the gap between the inclined portions, the movement of the object to be processed does not stop midway. Thereby, the object to be processed can be smoothly slid toward the crushing blade, and the effects of the present invention can be further exerted.

In addition, the above-mentioned embodiment shows an example of a crushing device. The crushing device of the present invention is not limited to the above-described embodiment, and the crushing device of the above-described embodiment can be modified within the scope that does not change the gist of the claims.

For example, the surface of the crushing device 1C of the third embodiment may be provided on the first scraper 72 of the scrapers 7B of the crushing device 1B of the second embodiment. Thereby, the scraper 7B in the second embodiment can enhance the scraping function of the attached matter and improve the moving efficiency of the object to be processed. [Industrial availability]

The crushing device of the present invention is used for crushing processing of objects to be processed. For example, it is preferably used for the crushing treatment of wastes discharged from homes, factories, etc., sewage residues, and the like.

1A, 1B, 1C: Crushing device 2: Drive motor 3: Shell 3a:Input port 3b: Discharge outlet 31:Side wall 4a, 4b: Tool unit 5a: Drive shaft 5b: driven shaft 5c: Axis 6:Broken Blade 61:Tool Department 62: Spacer 7A, 7B, 7C: Scraper 70: Inclined part 71: Inclined part 72:First scraper 73:Scrape part 74:Second scraper 75: Noodles A1,A2:Area L1: The straight line connecting the intersection point P and the axis 5c L2: extension line of the inclined portion 70 P: intersection point of extension line L2 and partition 62 W: width of opening θ1, θ2: angle

[Fig. 1] is a schematic explanatory diagram showing the structure of the crushing device according to the first embodiment of the present invention. [Fig. 2] is a schematic explanatory diagram of the vicinity of the scraper in the crushing device according to the first embodiment of the present invention. [Fig. 3] is a schematic explanatory diagram showing the structure of a crushing device according to a second embodiment of the present invention. [Fig. 4] is a schematic explanatory diagram showing the structure of a crushing device according to a third embodiment of the present invention.

1A: Crushing device

3: Shell

4a:Tool unit

5c: Axis

7A:Scraper

31:Side wall

62: Spacer

70: Inclined part

A1:Area

L1: The straight line connecting the intersection point P and the axis 5c

L2: extension line of the inclined part 70

P: intersection point of extension line L2 and partition 62

θ1: angle

θ2: angle

Claims (4)

A crushing device having a crushing blade composed of a cutter part and a spacer part, characterized in that it is provided with a scraper for scraping off attachments attached to the spacer part, and when viewed from the side of the device, the scraper has an orientation The inclined portion of the partition portion is arranged such that the inclined portion of the scraper overlaps the partition portion when viewed from directly above the inlet for inserting the object to be processed, and there is an area where the inclined portion of the scraper overlaps with the upper side of the partition portion. , the angle formed by a straight line with respect to a horizontal line passing through the center of the crushing blade is 10 to 20 degrees. This straight line connects the intersection point where the extension line of the inclined portion of the scraper intersects the spacer portion and the center of the crushing blade. The crushing device according to claim 1, wherein the angle formed by the inclined portion of the scraper with respect to the vertical direction of the device is 45 degrees or less. The crushing device according to claim 1 or claim 2, wherein the scraper also has an area overlapping below the partition when viewed from directly above the inlet for inputting the object to be processed. The crushing device according to claim 1 or claim 2, wherein the scraper has a surface that is uniformly continuous in the width direction of the device when viewed from directly above the inlet for inputting the object to be processed.