Crushing Equipment

Abstract

To provide a crusher which enables reduction of the replacement frequency of a scraper.SOLUTION: A crusher has a crushing blade comprising a cutter part and a spacer part. The crusher includes: a scraper which scrapes deposits adhering to the spacer part; and an adjustment mechanism which may adjust a distance between the scraper and the spacer part. The structure allows the worn scraper to recover scraping performance to achieve reduction of the replacement frequency of the scraper.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a crushing device for crushing objects to be processed. [Background technology]

[0002] 2. Description of the Related Art Generally, as one of means for treating objects to be treated, such as waste discharged from homes, factories, etc., a crushing device for crushing the objects to be treated into pieces of a certain size is known.

[0003] As such a crushing device, one having a plurality of rotary blades is known. In addition, such a crushing device may be provided with a structure for preventing waste from adhering to the rotary blades when crushing the object to be treated. For example, Patent Document 1 describes that a crushing device has spacers arranged between multiple rotating blades, and is equipped with a scraper that scrapes off waste that has become caught in the spacers, with a gap provided between the spacer and the scraper. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-214013 A Summary of the Invention [Problem to be solved by the invention]

[0005] As shown in Patent Document 1, when a scraper is provided in a crushing device, the scraper wears out due to friction between the object to be treated and the scraper. This causes the gap between the spacer and the scraper to become larger, and the scraper's performance in scraping the object to be treated decreases, so the scraper needs to be replaced periodically. Since the crushing device needs to be stopped to replace the scraper and the scraper itself is costly, the frequent replacement of the scraper is problematic in terms of maintenance and management of the crushing device.

[0006] Therefore, an object of the present invention is to provide a crushing device that can reduce the frequency of replacing the scraper. [Means for solving the problem]

[0007] As a result of thorough research into the above-mentioned problems, the inventors discovered that by providing a crushing device with an adjustment mechanism capable of adjusting the position of the scraper, the width of the spacer and scraper caused by wear can be adjusted to an appropriate width, thereby reducing the frequency of scraper replacement, and thus completed the present invention.

[0008] The crushing device of the present invention, which solves the above problems, is a crushing device having a crushing blade consisting of a cutter section and a spacer section, and is characterized in that it is equipped with a scraper that scrapes off adhesions adhering to the spacer section, and an adjustment mechanism that enables adjustment of the distance between the scraper and the spacer section. According to this feature, the provision of an adjustment mechanism makes it possible to adjust the gap between the spacer and the scraper and maintain an appropriate width for scraping off deposits. As a result, even if the scraper wears out, it does not require immediate replacement, and the scraper's ability to scrape off deposits can be restored.

[0009] Furthermore, in one embodiment of the crushing device of the present invention, the adjustment mechanism is characterized by comprising a means for adjusting the fixed position of the scraper. According to this feature, by adjusting the fixing position of the scraper, it is possible to set the gap between the spacer and the scraper to an appropriate width. This makes it possible to continuously remove the deposits without moving the axial direction or disassembling the crushing blade.

[0010] Furthermore, in one embodiment of the crushing device of the present invention, the scraper has a support and scraping claws, and the adjustment mechanism is characterized by comprising a means for adjusting the fixed position of the scraping claws on the support. According to this feature, it is the scraping claws, which are part of the scraper, that wear out when scraping off the deposits. Also, by adjusting the position of the scraping claws, which are part of the scraper, it is possible to recover the scraping performance of the deposits more easily than by adjusting the position of the crushing blade or the entire scraper.

[0011] Furthermore, in one embodiment of the crushing device of the present invention, the scraping claws are made of a material harder than the support body. According to this feature, by forming the scraping claws from a hard material, it is possible to suppress wear caused by scraping, and it is also possible to reduce costs compared to forming the entire scraper from a hard material.

[0012] Furthermore, one embodiment of the crushing device of the present invention is characterized in that it is equipped with a first shaft and a second shaft that rotate the crushing blades, the cutter portion attached to the first shaft and the spacer portion attached to the second shaft are opposed to each other, the first shaft rotates faster than the second shaft, and the scraper is provided only at a position to scrape off deposits adhering to the spacer portion attached to the first shaft. According to this feature, the cutter portion of the first shaft, which rotates faster than the second shaft, scrapes off deposits adhering to the spacer portion of the second shaft, eliminating the need for a scraper to scrape off deposits adhering to the spacer portion of the second shaft, thereby making it possible to reduce the number of scrapers. Effect of the Invention

[0013] According to the present invention, a crushing device capable of reducing the frequency of replacing a scraper can be provided. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic explanatory diagram showing a structure of a crushing device according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic explanatory view of the vicinity of a scraper in the crushing device according to the first embodiment of the present invention. [Diagram 3]FIG. 2 is a schematic explanatory diagram of an adjustment mechanism in the crushing device according to the first embodiment of the present invention. [Figure 4] FIG. 2 is a diagram showing a wear state of a scraper in the crushing device according to the first embodiment of the present invention. [Diagram 5] FIG. 2 is a diagram showing the position adjustment of a scraper by an adjustment mechanism in the crushing device according to the first embodiment of the present invention. [Figure 6] FIG. 4 is a schematic explanatory view of the vicinity of a scraper in a crushing device according to a second embodiment of the present invention. [Figure 7] FIG. 6 is a schematic explanatory diagram of an adjustment mechanism in the crushing device according to the second embodiment of the present invention. [Figure 8] FIG. 11 is a view showing a wear state of scraping claws in the crushing device according to the second embodiment of the present invention. [Figure 9] FIG. 11 is a diagram showing the position adjustment of scraping claws by an adjustment mechanism in the crushing device according to the second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of a crushing device according to the present invention will be described with reference to the drawings. The embodiment shows an example of a crushing device. The crushing device according to the present invention is not limited to the embodiment, and the crushing device according to the embodiment may be modified within the scope of the gist described in the claims.

[0016] The crushing device in the present invention is a device for crushing objects to be processed, and may be any device that includes a rotating cutter and a spacer as a crushing unit. Examples of the structure of the crushing unit of the crushing device of the present invention include a single-shaft crusher and a double-shaft crusher. The crushing device of the present invention makes it possible to reduce the frequency of replacing scrapers in either structure. In the following embodiment, a crushing unit having the structure of a double-shaft crusher will be described, but is not limited thereto.

[0017] There is no particular limitation on the object to be treated, which is the object to be crushed by the crushing device of the present invention. For example, general waste or industrial waste discharged from homes or factories, or sewage residue, etc. can be mentioned. In particular, bagged garbage, which is likely to cause adhesion to the crushing section due to the crushing process, such as small pieces of plastic, can be suitably used as the object to be treated of the present invention.

[0018] [First embodiment] Fig. 1 is a schematic explanatory diagram showing the structure of a crushing device 1A according to a first embodiment of the present invention, Fig. 1(A) is a side view of the crushing device 1A, and Fig. 1(B) is a plan view of the crushing device 1A seen from above.

[0019] [Crushing equipment] As shown in FIG. 1(A), the crushing device 1A of the first embodiment of the present invention comprises a drive motor 2, a drive shaft 5a driven by the drive motor 2, a driven shaft 5b driven by the rotational power of the drive shaft 5a, a plurality of crushing blades 6 arranged around the drive shaft 5a and the driven shaft 5b, and a scraper 7. The crushing device 1A also includes a casing 3 that houses cutter units 4a and 4b each of which is configured by a combination of a crushing blade 6 and a drive shaft 5a, and a combination of a crushing blade 6 and a driven shaft 5b. Furthermore, the crushing device 1A is provided with an adjustment mechanism 8a that enables the distance between the scraper 7 and the spacer portion 62 to be adjusted. Each component of the crushing device 1A of this embodiment will be described below.

[0020] [Drive motor] The drive motor 2 is for transmitting rotational power to the drive shaft 5a to rotate the crushing blade 6. Any type of rotating mechanism may be used for the drive motor 2. For example, an electric motor, a hydraulic motor, a water pressure motor, an air pressure motor engine, etc. may be used.

[0021] [Drive shaft] The drive shaft 5a is a shaft member that rotates by the rotational power of the drive motor 2. In addition, the crushing blade 6 is disposed around the drive shaft 5a, and the crushing blade 6 rotates at a predetermined speed together with the rotation of the drive shaft 5a. The shape of the drive shaft 5a may be any shape that can fix the crushing blade 6 arranged around it. For example, the drive shaft 5a may have a convex portion and the crushing blade 6 may have a concave portion, which engage with each other; or the drive shaft 5a may have a polygonal cross-section, and the crushing blade 6 may have a polygonal shaped shaft hole in the center thereof, which has approximately the same polygonal shape as the drive shaft 5a, for engagement therewith.

[0022] [Driven axis] The driven shaft 5b is a shaft member that rotates when the rotational power of the drive motor 2 is transmitted via the drive shaft 5a. Similarly to the drive shaft 5a, the crushing blade 6 is disposed around the driven shaft 5b, and the crushing blade 6 rotates at a predetermined speed with the rotation of the driven shaft 5b. The shape of the fixing of the driven shaft 5b and the crushing blade 6 is not particularly limited. For example, the same shape as that of the fixing of the drive shaft 5a and the crushing blade 6 may be used.

[0023] The means for transmitting the rotational power from the drive shaft 5a to the driven shaft 5b is not particularly limited, but may be, for example, a means for connecting the pulleys installed at the upper ends of the shafts with a belt or a means for connecting with gears. In this embodiment, the rotating shaft for rotating the crushing blade 6 is shown as being composed of the drive shaft 5a and the driven shaft 5b, but is not limited thereto. For example, it may be possible to use a shaft in which each shaft is driven independently. Furthermore, the relationship between the rotation 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 rotation speeds of the rotating shafts can be appropriately set in consideration of the ease of structural design related to the means for transmitting the rotational power, the amount of power consumption related to driving, and the like.

[0024] [Crushing blade] The crushing blade 6 is configured by concentrically overlapping a disk-shaped cutter section 61 and a spacer section 62 having a smaller diameter than the cutter section 61. The cutter section 61 and the spacer section 62 may be provided integrally or separately. Here, "integrated" refers to a combination of one cutter section 61 and one spacer section 62 integrated together, an integrated combination of multiple cutter sections 61 and spacer sections 62 stacked alternately, an integrated combination of multiple cutter sections 61 and multiple spacer sections 62, and the like. As a result, for example, when the cutter section 61 and the spacer section 62 are integrated, the number of parts can be reduced and assembly workability can be improved. On the other hand, when the cutter section 61 and the spacer section 62 are separate, when there is a change in the specifications of the cutter section 61 or the spacer section 62, or when replacement is required due to a defect in either section, replacement can be easily performed.

[0025] 1(B), the crushing blades 6 are arranged around the driving shaft 5a and the driven shaft 5b so that a plurality of crushing blades 6 are stacked to form cutter units 4a and 4b. The cutter units 4a and 4b are installed inside the casing 3 such that the cutter section 61 of one cutter unit engages with the gap formed by the spacer section 62 of the other cutter unit.

[0026] 1(B), the cutter unit 4a rotates counterclockwise when viewed from above the crusher 1A, and the cutter unit 4b rotates clockwise. When the object is fed from above the crusher 1A, the object passes between the cutter units 4a and 4b that rotate in opposite directions, and is cut by the cutter portion 61 of the crushing blade 6.

[0027] The material of the crushing blade 6 is not particularly limited, but examples thereof include metal materials such as tool steel, chromium molybdenum steel, stainless steel, and ceramic materials such as alumina, zirconia, silicon nitride, etc. From the viewpoint of high strength and resistance to breakage, it is preferable to use metal materials such as tool steel, chromium molybdenum steel, stainless steel, etc.

[0028] [scraper] The scraper 7 has a function of scraping off the deposits that have become entangled with the spacer portion 62 when the object to be treated has been treated. The scraper 7 is disposed between the cutter portions 61 of the cutter unit 4 a and is installed so as to be adjacent to the spacer portion 62 disposed between the cutter portions 61 .

[0029] FIG. 2 is a schematic explanatory diagram (side view) relating to the vicinity of the scraper 7 in this embodiment. 2, a width W1 suitable for scraping off deposits is provided between the scraper 7 and the spacer portion 62. Here, the scraper 7 is worn down by scraping off deposits entangled in the spacer portion 62, so the distance between the scraper 7 and the spacer portion 62 gradually becomes larger than the width W1 as the crushing device 1A is used. The scraper 7 is installed on the wall surface 36 of the casing 3. The scraper 7 is installed so that a scraping portion 70 that comes into contact with the deposits entangled in the spacer part 62 is located below the axis 5c of the drive shaft 5a of the spacer part 62 (in the direction of gravity).

[0030] There is no particular limitation on the location and number of the scrapers 7. As shown in Fig. 1, the scrapers 7 in this embodiment are provided on the drive shaft 5a side. At this time, the rotation speeds of the drive shaft 5a and the driven shaft 5b are different, and the drive shaft 5a on which the scrapers 7 are provided is set to have a higher rotation speed than the driven shaft 5b. Of the drive shaft 5a and the driven shaft 5b, the one that rotates faster is designated as the first shaft and the one that rotates slower is designated as the second shaft. The cutter portion of the first shaft (cutter portion 61 in cutter unit 4a), which rotates faster than the second shaft, scrapes off adhesions adhering to the spacer portion of the second shaft (spacer portion 62 in cutter unit 4b). This eliminates the need for a scraper to scrape off adhesions adhering to the spacer portion of the second shaft, and the number of scrapers can be reduced. In other words, if the scraper 7 for scraping off the deposits on the spacer portion 62 is provided only on the side of the first shaft (drive shaft 5a) which rotates faster, the deposits on the spacer portions 62 of both the cutter units 4a and 4b can be removed. In addition, a scraper 7 for scraping off the deposits entangled with the spacer portion 62 may also be provided on the second shaft (driven shaft 5b) side. This makes it possible to increase the efficiency of scraping off the deposits. As shown in FIG. 2, the scraper 7 is provided with a receiving portion 33 that receives a fastener 32 for fixing the scraper 7 to the side wall 31 of the casing 3. FIG. 2 shows the receiving portion 33 having a female screw inside a hole. The receiving portion 33 is not particularly limited as long as it can receive the fastener 32 and fix the scraper 7 to the casing 3. The fastener 32 and the receiving portion 33 in this embodiment function as an adjustment mechanism 8a described later, since the position of the scraper 7 can be adjusted by loosening the fastener 32. For this reason, it is preferable that the combination of the fastener 32 and the receiving portion 33 has a detachable fixing means.

[0031] [Casing] The casing 3 houses the cutter units 4a and 4b. As shown in Fig. 1(A), the casing 3 has an inlet 3a at its upper part (upper side in the figure) through which the material to be treated is put in, and an outlet 3b at its lower part (lower side in the figure) through which the material to be treated (crushed material) is discharged. As shown in FIG. 2, the side wall 31 of the casing 3 is provided with a long hole 81 for enabling the position of the scraper 7 to be adjusted in the vertical direction.

[0032] [Adjustment mechanism] As described above, a width W1 suitable for scraping off deposits is provided between the scraper 7 and the spacer portion 62 inside the casing 3. However, due to wear of the scraper 7 accompanying use of the crushing device 1A, the distance between the scraper 7 and the spacer portion 62 gradually becomes larger than the width W1, and the efficiency of scraping off deposits decreases. For this reason, in the conventional crushing device, it was necessary to periodically replace the scraper. On the other hand, the crushing device 1A in this embodiment is provided with an adjustment mechanism 8a that can adjust the distance between the scraper 7 and the spacer portion 62. This makes it possible to readjust the distance between the scraper 7 and the spacer portion 62 to the width W1, and to restore the scraping performance of the deposits without replacing the scraper 7.

[0033] The adjustment mechanism 8a is not particularly limited as long as it can adjust the distance between the scraper 7 and the spacer portion 62. An example of the adjustment mechanism 8a in this embodiment is a means for adjusting the fixed position of the scraper 7. More specifically, an example is a mechanism for adjusting the position of the scraper 7 fixed to the side wall 31 of the casing 3 by a fastener 32 such as a bolt.

[0034] The adjustment mechanism 8a in this embodiment corresponds to a combination of a vertically extending long hole 81 provided in the casing 3, a fixing tool 32, and a receiving portion 33 provided on the scraper . An example of the adjustment mechanism 8a will be described below with reference to FIGS. 3 is a schematic explanatory diagram showing an example of the adjustment mechanism 8a in this embodiment, and is a front view seen from the direction of the arrow A in FIG. As shown in Fig. 2, fastener 32 is composed of head 34 and screw body 35. Furthermore, by inserting screw body 35 into receiving portion 33 and rotating fastener 32, receiving portion 33 receives fastener 32 and fixes scraper 7. Furthermore, as shown in Fig. 3, long hole 81 is a hole of a width that does not allow head 34 of fastener 32 to pass through, but allows screw body 35 of fastener 32 to pass through, and allows scraper 7 to move up and down. By providing a long hole 81 in the side wall 31 of the casing 3 as the adjustment mechanism 8a, the fixed position of the scraper 7 with respect to the side wall 31 of the casing 3 can be adjusted in the vertical direction.

[0035] [Adjustment procedure using the adjustment mechanism] 2, in the initial state of the crushing device 1A, the scraper 7 is not worn, and the distance between the scraper 7 and the spacer portion 62 is maintained at a width W1 suitable for scraping off deposits. On the other hand, when the scraper 7 wears with use of the crushing device 1A, the distance between the scraper 7 and the spacer portion 62 is adjusted by the adjustment mechanism 8a. Hereinafter, with reference to Figs. 4 and 5, a procedure for adjusting the position of the worn scraper 7 and restoring the distance between the scraper 7 and the spacer portion 62 to an appropriate width W1 will be described.

[0036] Fig. 4 is a diagram showing a state in which the scraper 7 is worn with use of the crushing device 1A. With use of the crushing device 1A, the scraper 7 in the crushing device 1A shown in Fig. 2 develops worn portions 71 as shown by the dashed lines in Fig. 4. Due to these worn portions 71, the distance between the scraper 7 and the spacer portion 62 becomes larger than the width W1 (width W2), and the performance of scraping off the deposits decreases.

[0037] When the scraper 7 becomes worn, the position of the scraper 7 fixed to the wall surface 36 of the casing 3 is adjusted by the adjustment mechanism 8a. FIG. 5 is a diagram showing a state in which the position of the scraper 7 is adjusted by the adjustment mechanism 8a. 5, the distance between the scraper 7 and the spacer portion 62 can be narrowed from the width W2 by loosening the fastener 32 and lifting the scraper 7 upward within the range of the length of the long hole 81. That is, the distance between the scraper 7 and the spacer portion 62 can be adjusted by moving the scraper 7 in the direction of the black arrow in FIG. There is no particular limitation on the means for ensuring an appropriate width W1 between the scraper 7 and the spacer portion 62. For example, the width may be adjusted with a jig called a skin gauge inserted between the scraper 7 and the spacer portion 62, or the width may be adjusted visually by an operator. Once the adjustment to the appropriate width W1 is completed, the fixing device 32 is tightened and the scraper 7 is fixed to the casing 3.

[0038] As described above, in the crushing device 1A of this embodiment, by providing an adjustment mechanism for adjusting the distance between the spacer and the scraper, it is possible to maintain an appropriate width W1 when scraping off the deposits. Therefore, even if the scraper wears out, it does not need to be replaced immediately, and the scraper's ability to scrape off the deposits can be restored. This makes it possible to reduce the cost of replacing the scraper. In the crushing device 1A of this embodiment, the long hole 81 is provided in the casing 3, and the receiving part 33 is provided in the scraper 7. However, the long hole 81 may be provided in the scraper 7, and the receiving part 33 may be provided in the casing 3. In this case, the fixing device 32 is installed from the scraper 7 side, and the head 34 of the fixing device 32 is located on the scraper 7 side. With this structure, since it is only necessary to provide the long hole 81 in the scraper 7, there is no need to process the receiving part 33 such as a female screw, and the scraper 7 can be easily manufactured. In addition, there is an effect that the liquid contained in the processing object can be prevented from leaking to the outside from the long hole 81 of the casing 3.

[0039] [Second embodiment] Fig. 6 is a schematic explanatory diagram showing the configuration of a crushing device in a second embodiment of the present invention. Note that Fig. 6 is a schematic explanatory diagram (side view) showing an enlarged view of the vicinity of a scraper in the crushing device in the second embodiment. The crushing device 1B in this embodiment is different from the crushing device 1A in the first embodiment in that the scraper 7 has a support 72 and scraping claws 73. In addition, the adjustment mechanism 8 in this embodiment b The crushing device 1B includes a means for adjusting the fixed position of the scraping claws 73 on the support 72. Note that, among the components of the crushing device 1B in this embodiment, the description of the same components as those of the crushing device 1A in the first embodiment will be omitted.

[0040] The support body 72 is a member that fixes and supports the scraping claws 73. The support body 72 is fixed to the wall surface 36 of the casing 3. Further, the support 72 has a receiving portion 75 that receives a fixing device 74 that fixes the scraping claw 73. In Fig. 6, the receiving portion 75 is shown as having a hole with a female screw inside. Note that the structure of the receiving portion 75 is not particularly limited as long as it can receive the fixing device 74 and fix the scraping claw 73. The support 72 is a member that supports the scraping claws 73, but the support 72 itself may also have a function of scraping off the deposits. This makes it possible to efficiently scrape off the deposits that have become entangled with the spacer portion 62.

[0041] The scraping claws 73 have the function of scraping off any attached matter that has become entangled around the spacer portion 62 when the object to be treated has been treated. The scraping claws 73 are disposed between the cutter portions 61 of the cutter unit 4a, and are installed so as to be adjacent to the spacer portions 62 disposed between the cutter portions 61. A width W3 suitable for scraping off deposits is provided between the scraping claws 73 and the spacer portions 62. Here, the scraping claws 73 are worn down by scraping off deposits entangled in the spacer portions 62, so the distance between the scraping claws 73 and the spacer portions 62 gradually becomes larger than the width W3 as the crushing device 1B is used.

[0042] The scraping claw 73 is installed so that a scraping portion 76 that comes into contact with the deposits entangled in the spacer portion 62 is located below the axis 5c of the drive shaft 5a of the spacer portion 62 (in the direction of gravity). As shown in FIG. 6, the scraping claw 73 is fixed to the side surface of the support 72 by a fastener 74 such as a bolt.

[0043] The scraping claw 73 in this embodiment is an adjustment mechanism 8 b The adjustment mechanism 8 in this embodiment is provided to adjust the fixing position. b corresponds to the combination of the long hole 82 extending in the length direction of the scraping claw 73, the fixing device 74, and the receiving portion 75. The adjustment mechanism 8 will be described below with reference to FIGS. b An example of the above will be described. FIG. 7 shows the adjustment mechanism 8 in this embodiment. b 7 is a schematic explanatory diagram showing an example of the above-mentioned. Note that Fig. 7 is a front view seen from the direction of the arrow B in Fig. 6. 6 and 7, the fixing device 74 is composed of a head 78 and a screw body 79. Furthermore, by inserting the screw body 79 into the receiving portion 75 and rotating the fixing device 74, the receiving portion 75 receives the fixing device 74, and the scraping claw 73 is fixed. As shown in FIG. 7, the elongated hole 82 is a hole having a width large enough that the head 78 of the fixing tool 74 cannot pass therethrough, but the screw body 79 can pass therethrough, and the scraping claw 73 can move therethrough. Adjustment mechanism 8 b By providing the long hole 82 in the scraping claw 73, the tip (scraping portion 76) of the scraping claw 73 can be moved to the spacer portion 62 side and fixed there.

[0044] The shape of the scraping claw 73 is not particularly limited. For example, as shown in FIG. 7, the scraping claw 73 may be a flat plate-like member, or the tip of the scraping claw 73 may be inclined to increase the efficiency of scraping off the deposits. The scraping claw 73 may be made of the same material as the support 72, but it is preferable to use a material harder than the support 72. This makes it possible to suppress wear caused by scraping. In addition, it is possible to reduce costs compared to forming the entire scraper 7 from a hard material.

[0045] Hereinafter, with reference to Figs. 8 and 9, a procedure for adjusting the position of the worn scraping claw 73 and restoring the distance between the scraping claw 73 and the spacer portion 62 to an appropriate width W3 will be described.

[0046] Fig. 8 is a diagram showing a state in which the scraping claws 73 are worn as the crushing device 1B is used. As the crushing device 1B is used, the scraping claws 73 in the crushing device 1B shown in Fig. 6 develop worn portions 77 as shown by the dashed lines in Fig. 8. Due to these worn portions 77, the distance between the scraping claws 73 and the spacer portion 62 becomes larger than the width W3 (width W4), and the performance of scraping off the deposits decreases.

[0047] In the state where the scraping claw 73 is worn, the position of the scraping claw 73 fixed to the support 72 is adjusted by the adjustment mechanism 8. b Adjust according to: FIG. 9 shows the adjustment mechanism 8 b 13 is a diagram showing a state in which the position of scraping claw 73 has been adjusted by the adjustment. 9, the fixing device 74 is loosened and the tip of the scraping claw 73 is moved toward the spacer portion 62 within the length of the long hole 82, thereby making it possible to narrow the distance between the scraping claw 73 and the spacer portion 62 from the width W4. That is, the distance between the scraping claw 73 and the spacer portion 62 is adjusted by moving the scraping claw 73 in the direction of the black arrow in FIG. There is no particular limitation on the means for ensuring an appropriate width W3 between the scraping claw 73 and the spacer portion 62. For example, the width may be adjusted in a state where a jig called a gap gauge is inserted between the scraping claw 73 and the spacer portion 62, or the width may be adjusted by an operator through visual inspection. After the adjustment to the appropriate width W3 is completed, the fixing tool 74 is tightened and the scraping claw 73 is fixed to the support 72.

[0048] As described above, in the crushing device 1B of this embodiment, the scraper has a support and a scraping claw, and is provided with a means for adjusting the fixed position of the scraping claw on the support as an adjustment mechanism. As a result, the scraping claw, which is a part of the scraper, wears as the deposits are scraped off, and the position of the scraping claw can be adjusted. Therefore, it is possible to recover the scraping performance of the scraper more easily than by adjusting the position of the crushing blade or the entire scraper.

[0049] The above-described embodiment shows an example of the crushing device. The crushing device according to the present invention is not limited to the above-described embodiment, and the crushing device according to the above-described embodiment may be modified within the scope of the gist of the claims.

[0050] For example, the adjustment mechanism of the crushing device in this embodiment is not limited to the mechanism that moves the scraper side part to the spacer part side. Another example of the adjustment mechanism may be the mechanism that moves the spacer part to the scraper side to adjust the width between the scraper and the spacer part to a width suitable for scraping off the deposits. A specific example of such an adjustment mechanism is, for example, the provision of a means for moving the drive shaft and the driven shaft downward.

[0051] In addition, the crushing device adjustment mechanism in this embodiment may be a combination of multiple mechanisms. For example, the adjustment mechanism 8a shown in the first embodiment and the adjustment mechanism 8b shown in the second embodiment may be combined to provide multiple means for adjusting the width between the scraper and the spacer portion. This makes it possible to further reduce the frequency of replacing worn scrapers. [Industrial Applicability]

[0052] The crushing device of the present invention is used for crushing objects to be treated. For example, it is suitably used for crushing objects to be treated discharged from homes, factories, etc. [Explanation of symbols]

[0053] 1A, 1B Crushing device, 2 Drive motor, 3 Casing, 3a Inlet, 3b Outlet, 31 Side wall, 32 Fixture, 33 Receiving portion, 34 Head, 35 Screw body, 36 Wall surface, 4a, 4b Cutter unit, 5a Drive shaft, 5b Driven shaft, 5c Shaft center, 6 Crushing blade, 61 Cutter portion, 62 Spacer portion, 7 Scraper, 70 Scraping portion, 71 Wear portion, 72 Support, 73 Scraping claw, 74 Fixture, 75 Receiving portion, 76 Scraping portion, 77 Wear portion, 78 Head, 79 Screw body, 8a, 8b Adjustment mechanism, 81 Long hole, 82 Long hole

Claims

1. A crushing device having a crushing blade consisting of a cutter part and a spacer part, A scraper for scraping off any deposits adhering to the spacer portion; An adjustment mechanism that can adjust the distance between the scraper and the spacer portion without using a drive mechanism, The scraper has a support fixed to a wall surface of a casing and a scraping claw fixed to the support, The crushing device, wherein the adjustment mechanism includes a means for adjusting a fixed position of the scraping claws on the support body.

2. 2. The crushing device according to claim 1, wherein the adjustment mechanism comprises a means for adjusting a fixed position of the scraper.

3. 2. The crushing device according to claim 1, wherein the scraping claws are made of a material harder than the support body.

4. A first shaft and a second shaft are provided for rotating the crushing blade, The cutter portion attached to the first shaft and the spacer portion attached to the second shaft face each other, the first shaft rotates faster than the second shaft; The crushing device according to any one of claims 1 to 3, characterized in that the scraper is provided only at a position where it scrapes off deposits adhering to the spacer portion attached to the first shaft.

5. A crushing device having a crushing blade consisting of a cutter part and a spacer part, A scraper for scraping off any deposits adhering to the spacer portion; An adjustment mechanism that can adjust the distance between the scraper and the spacer portion without using a drive mechanism; A first shaft and a second shaft are provided for rotating the crushing blade, The cutter portion attached to the first shaft and the spacer portion attached to the second shaft face each other, the first shaft rotates faster than the second shaft; A crushing device characterized in that the scraper is provided only at a position where it can scrape off any adhering matter adhering to the spacer portion attached to the first shaft.

Images