Crushing Equipment

Abstract

To provide a crusher capable of adjusting the size of an opening of an exhaust port while being compact.SOLUTION: A crusher 10 includes: a rotary structure body 20 on which a swing hammer 23 is pivotally supported; a wall part 70 surrounding the rotary structure body; a body 11 rotatably supporting the rotary structure body 20; and an opening adjusting mechanism 60 for adjusting a size of a primary exhaust port 41 for debris resulting from crushing with the swing hammer 23. The opening adjusting mechanism 60 includes: a shielding plate 62 arranged so as to pass through an opening provided in the wall part 70; a swing arm 64 pivotally supported on the shielding plate 62; and a driving unit 67 arranged between the swing arm 64 and the wall part 70 and adjusting the size of the opening of the primary exhaust port 41 by energizing an opening adjusting plate 62 via the swing arm 64 in a direction toward or away from the rotary structure body 20.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a crushing device. [Background technology]

[0002] Crushing devices have been developed that can crush items, including electrical appliances such as refrigerators and air conditioners, into pieces of iron, non-ferrous metals, plastics, etc., and separate them into different materials.

[0003] Such a crushing device includes a rotating structure in which multiple rotors are stacked and rotatable, and striking members journalled to each rotor are arranged to protrude radially outward as the rotor rotates, and has the function of crushing objects by clamping them between the rotating structure and a wall portion formed to surround it.

[0004] In some crushing devices, a discharge port for discharging crushed pieces is provided at the bottom of the crushing device, and part of this discharge port is covered with a plate or the like to make it possible to adjust the size of the crushed pieces.

[0005] For example, Patent Document 1 discloses a crushing device that includes a choke ring that adjusts the size of the opening of a discharge outlet provided at the bottom in order to adjust the crushing particle size of the material, and a cylinder driven by a motor (not shown) to move the choke ring back and forth radially around the cylindrical shell, which is arranged to extend outside the cylindrical shell. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2002-28512 A Summary of the Invention [Problem to be solved by the invention]

[0007] In the crushing device described in Patent Document 1, the opening area of ​​the discharge port provided at the bottom of the device can be adjusted via a choke ring. However, the driving parts such as the cylinder and driving motor that drive the choke ring protrude significantly outside the device, which results in a problem that the device becomes large and the locations where it can be installed are limited.

[0008] An object of the present invention is to provide a crushing device that is capable of adjusting the size of the opening of the discharge port while preventing the device from becoming large. [Means for solving the problem]

[0009] The crushing device of the present invention includes a rotating structure to which a striking member used in the crushing process is attached, a wall portion surrounding the rotating structure, and a main body rotatably supporting the rotating structure, and is equipped with an adjustment mechanism for crushing inserted objects into crushed pieces using the striking member and adjusting the size of an opening of a discharge outlet provided on the bottom side of the main body to discharge the crushed pieces, and the adjustment mechanism includes an opening adjustment plate arranged to pass through an opening provided in the wall portion, a swing arm pivotally supported by the opening adjustment plate, and a drive unit arranged between the swing arm and the wall portion for adjusting the size of the opening of the discharge outlet by biasing the opening adjustment plate via the swing arm in a direction approaching or moving away from the rotating structure. and a support portion having a guide mechanism for supporting the swing arm so as to be swingable and for guiding the opening adjustment plate to move in a direction approaching or moving away from the rotating structure. It is something.

[0011] In the crushing device of the present invention, a control unit is provided for controlling the driving of the drive unit and the rotating structure, and the control unit may be configured to be capable of executing a cleaning mode for a predetermined period of time in which the discharge outlet is fully opened via the drive unit while driving the rotating structure to rotate. Effect of the Invention

[0012] According to the crushing device of the present invention, the size of the opening of the discharge port can be adjusted by biasing the opening adjustment plate in a direction toward or away from the rotating structure using a drive unit disposed between the swing arm and the wall portion. This makes it possible to adjust the size of the opening of the discharge port while preventing the crushing device from becoming large. [Brief description of the drawings]

[0013] [Figure 1] 1 is a side view of a crushing device according to an embodiment of the present invention; [Diagram 2] 1 is a plan view of a crushing device according to an embodiment of the present invention, and a partially enlarged view of the device as viewed from the front side. FIG. [Diagram 3] 3 is a cross-sectional view of the crushing device taken along line BB in FIG. 2, a partially enlarged view showing the configuration of the area around the primary discharge port included in the cross-sectional view, and a plan view of the rotor included in the cross-sectional view. [Figure 4] 2 is a plan view showing the configuration of the bottom of the crushing device when cut along the line AA shown in FIG. 1. [Diagram 5] 5 is a plan view showing a state in which the left and right movable walls included in FIG. 4 are opened. [Figure 6] Fig. 6(a) is a diagram illustrating the configuration of the locking mechanism in a plan view, Fig. 6(b) is a side view showing the configuration of the locking mechanism shown in Fig. 6(a), and Fig. 6(c) is a side view showing the configuration of the locking mechanism in a locked state. [Figure 7] Fig. 7(a) is a perspective view showing the primary exhaust port in a fully open state, Fig. 7(b) is a plan view showing the primary exhaust port in a fully open state, Fig. 7(c) is a perspective view showing the primary exhaust port in a fully closed state, and Fig. 7(d) is a plan view showing the primary exhaust port in a fully closed state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] A crushing device 10 according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the X direction indicates the depth direction, the Y direction indicates the width direction, and the Z direction indicates the up-down direction. FIG. 1 is a side view of the crushing device 10 according to an embodiment of the present invention. FIG. 2 is a plan view of the crushing device 10 shown in FIG. 1. In FIG. 1, in order to avoid cumbersome illustration, some components such as an opening adjustment mechanism, a lock mechanism, and an opening / closing cylinder, which will be described later, are omitted and the crushing device 10 is simply illustrated. As shown in FIGS. 1 and 2, the crushing device 10 includes a main body 11 having a function of crushing articles including electric appliances such as refrigerators and air conditioners, a driving unit 12 that supplies driving force to the main body 11, and a control panel 100 that controls the operation of the main body 11 and the driving unit 12.

[0015] Fig. 3 is a diagram showing a cross-sectional configuration of the crushing device 10 when cut along the line BB shown in Fig. 2. In Fig. 3, in order to avoid complicated illustration, some illustrations are omitted and cross-sectional hatching is omitted. As shown in Fig. 3, the main body 11 includes a rotating structure 20 in which rotors 22, 24, 26, and 28 are attached to a rotating shaft AX in a state where they are overlapped at a predetermined interval, a wall portion 70 arranged so as to surround the rotating structure 20, and a base 40 on which the rotating structure 20 and the wall portion 70 are installed. The upper and lower ends of this rotating structure 20 are supported by the rotating support portion 16 and the rotating support portion 18, respectively.

[0016] Next, the configuration of the rotors 22, 24, 26 that constitute the rotating structure 20 will be described. As shown in Fig. 3, the rotor 22 has four swing hammers (striking members) 23A, 23B, 23C, 23D (hereinafter, unless there is a need to distinguish them, they will be referred to as "23" swing hammers) used for crushing treatment rotatably attached to the outer periphery of the upper surface of the rotor 22 so as to be equidistant. The rotors 24, 26 have the same configuration as the rotor 22, and each has a swing hammer attached thereto that has the same configuration as the swing hammer 23.

[0017] Here, Fig. 4 is a diagram showing a cross-sectional configuration of the crushing device 10 when cut along the line AA shown in Fig. 1. In Fig. 4, some cross-sectional hatching is omitted to avoid complicated illustration. As shown in Fig. 4, the rotor 28 arranged at the bottom is different from the above-mentioned rotor 22 in that swing hammers 27A, 27B, 27C, and 27D (hereinafter, unless there is a need to distinguish them, they will be referred to as "swing hammers 27") having the same configuration as the above-mentioned swing hammer 23, and ring hammers (striking members) 29A, 29B, 29C, and 29D (hereinafter, unless there is a need to distinguish them, they will be referred to as "ring hammers 29") are attached in two layers, one above the other, but the other configurations are almost the same as those of the rotor 22.

[0018] The swing hammer 27 and the ring hammer 29 may be arranged upside down. Furthermore, the swing hammers 27A, 27C and the ring hammers 29A, 29C arranged opposite each other may be arranged overlapping with the swing hammer on the upper side and the ring hammer on the lower side, and the swing hammers 27B, 27D and the ring hammers 29B, 29D may be arranged overlapping with the ring hammer on the upper side and the swing hammer on the lower side.

[0019] As described above, by stacking the swing hammer 27 and ring hammer 29 in two stages, one above the other, in the rotor 22 located at the bottom, crushed pieces can be efficiently pushed out in the directions of 41A, 41B, 41C, . . . described later.

[0020] As shown in Fig. 4, immediately below the rotor 28 located at the bottom of the rotating structure 20, primary discharge ports 41A, 41B, 41C, ... (hereinafter referred to as primary discharge ports "41") having a substantially rectangular shape are provided at equal intervals on the same circumference in floor plates 42A, 42B, 42C, ... attached to the inner periphery of base plates 46, 48, 49. Each base plate 46, 48, 49 is provided with opening adjustment mechanisms 60A, 60B, 60C, ... (hereinafter referred to as opening adjustment mechanisms "60" unless otherwise required) having the same configuration and having the function of adjusting the size of the opening of each primary discharge port 41. The configuration of the opening adjustment mechanism 60 will be described in detail later.

[0021] 3, a flanged cylindrical body 50 is attached between the rotating structure 20 and the rotation support part 18. Fins 52, 54 are attached to this flanged cylindrical body 50 so as to protrude radially outward, and as the flanged cylindrical body 50 rotates, the fins 52, 54 push out the crushed pieces dropping from the primary discharge port 41 located directly above them toward the secondary discharge port 43 located radially outward of the cylindrical body 50. In this way, the crushed pieces are discharged from the secondary discharge port 43 to the outside of the device.

[0022] As shown in FIG. 2, the wall 70 includes a rear wall 72 arranged to surround the rear side of the rotating structure 20, and a front wall 74 arranged to surround the front side of the rotating structure 20. The front wall 74 is composed of a pair of left and right movable walls 76, 78 arranged on the left and right sides as viewed from the front side. Both movable walls 76, 78 are double-opening movable walls, and are attached to the rear wall 72 via hinges 76A, 76B, 78A, 78B, respectively. As shown by the dashed line in FIG. 2, the movable wall 78 is supported so as to be able to open and close about 45 degrees to the right as viewed from the front side, and similarly, the movable wall 78 is supported so as to be able to open and close about 45 degrees to the left as viewed from the front side. In this way, by making the front wall 74 a double-opening type, the turning radius of the movable wall can be made smaller than when the wall 74 is a single-opening type, and the weight of the movable wall is also light, so that opening and closing operations are easy to perform.

[0023] As shown in FIG. 4, both movable walls 76, 78 are erected on base plates 46, 48 slidably placed on the base 40, and the rear wall 72 is erected on a base plate 49 fixedly supported by the base 40. In addition, opening and closing cylinders 83, 84 are attached between the base plates 46, 48 on which both movable walls 76, 78 are erected and the base plate 49 on which the rear wall 72 is erected. Since the opening and closing cylinders 83, 84 have the same configuration, only the configuration of the opening and closing cylinder 83 will be described below. As shown in FIG. 4, both ends of the opening and closing cylinder 83 are supported by the movable wall 76 and the rear wall 72 via plates 76L, 72L having a substantially triangular shape in a plan view, respectively, and the opening and closing cylinder 83 is driven by using an electric motor or hydraulic pressure. The opening and closing cylinder 83 is controlled to extend and retract based on a control signal from a control panel 100 described later.

[0024] As shown in Fig. 2, ribs 76R, 78R, 72R are provided on both movable walls 76, 78 and the rear wall 72 along the ends that come into contact with each other when the movable walls 76, 78 are closed. In addition, it is preferable to provide notches 76C, 78C that are approximately V-shaped in plan view at the lower ends on the front side of the ribs 76R, 78R in order to drive a wedge KU into the gap between the movable walls 76, 78 using a striking means such as a hammer when opening the movable walls 76, 78. This makes it possible to forcibly open the left and right movable walls 76, 78 by driving a wedge KU into the notches 76C, 78C when it is difficult to open them.

[0025] 2, pillars H1, H2 may be installed slightly forward of the movable walls 76, 78, and engagement means such as eyebolts may be attached to the pillars H1, H2 and the movable walls 76, 78, respectively, and the movable walls 76, 78 may be rotated forward from the closed position by engaging both engagement means with a traction means such as a chain block. In this case as well, it is possible to forcibly open both movable walls 76, 78 when it is difficult to open both movable walls 76, 78.

[0026] Fig. 5 is a diagram showing a state in which the left and right movable walls 76, 78 are opened. As shown in Fig. 5, the base 40 located directly below the base plates 46, 48 is provided with a recess SP that is substantially annular in plan view so as to surround the rotating structure 20. This recess SP is a space in which the flanged cylindrical body 50 rotates. Furthermore, the upper surface 40-1 of the base 40 is formed in an annular shape so as to surround this recess SP.

[0027] A plurality of sliding plates 80A, 80B, 80C, 80D, and 80E are attached to this pedestal upper surface 40-1. The sliding plates 80A to 80E are plates to which a plurality of sliding bearings are attached, and are configured so that the sliding bearings protrude slightly from the upper surface 40-1 of the pedestal 40. This allows the sliding plates 80A to 80E to slidably support the movable walls 76, 78 so that they do not tilt under their own weight when opening and closing, and allows the opening and closing operations of the movable walls 76, 78 to be performed smoothly.

[0028] In this embodiment, the sliding plates 80A to 80E are arranged corresponding to the movable ranges of the two movable walls 76, 78 so that both movable walls 76, 78 are supported by one of the sliding plates 80A to 80E while the movable walls 76, 78 rotate from the closed position to the fully open position.

[0029] 2, it is preferable to attach lids 73, 77, 79 to the upper parts of the rear wall 72 and both movable walls 76, 78, respectively. The lid 73 of the rear wall 72 is provided with an input port 73A for inputting articles into the device. Articles are sequentially input into this input port 73A using a conveying means such as a belt conveyor (not shown).

[0030] 1, each of the ribs 72R, 76R, 78R is provided with a lock mechanism 90-1 to 90-11 that has the function of fixing the left and right movable walls 76, 78 in the closed position. Since each of the lock mechanisms 90-1 to 90-11 has the same configuration, the configuration will be described using the lock mechanism 90-1 (hereinafter, referred to as "lock mechanism 90" unless there is a need to distinguish between them) as an example.

[0031] Fig. 6(a) is a diagram illustrating the configuration of the lock mechanism 90 in a plan view. Fig. 6(b) is a side view showing the configuration of the lock mechanism 90 shown in Fig. 6(a). Fig. 6(c) is a side view showing the configuration of the lock mechanism 90 in a locked state.

[0032] 6(a) and 6(b), the lock mechanism 90 includes a fixing lever 91 that is generally L-shaped in side view, and a fixing base 92 that is trapezoidal in side view and has an inclined surface 92S for fixing the fixing lever 91. The fixing lever 91 is journaled on a support base 93 that is disposed adjacent to one of the ribs 78R so as to straddle ribs 76R, 78R that are provided on portions where the covers 77, 79 of both the movable walls 76, 78 come into contact when the left and right movable walls 76, 78 are closed, and the tip side is formed in a bifurcated shape to sandwich the fixing bolt BT.

[0033] The fixing lever 91 can be released from the locked state by rotating it backward, in other words, away from the fixing base 92, as shown by the dashed line in FIG. 6(b), and retracting it from the fixing base 92. Meanwhile, the fixing base 92 is attached so as to be adjacent to the rib 76R, and a fixing bolt BT for fixing the fixing lever 91 is attached in a rotatable state in the center. Then, in a state where the fixing lever 91 is rotated toward the fixing base 92 as shown by the solid line in FIG. 6(b), the fixing bolt BT is rotated 90 degrees from the retracted position shown by the solid line in FIG. 6(b) to the fixed position shown by the dashed line in FIG. 6(b), and then the nut NT is tightened to press the fixing lever 91 against the inclined surface 92S of the fixing base 92. As a result, a tightening force acts via the fixing base 92 so as to bring the movable walls 76, 78 into close contact with each other, and the movable walls 76, 78 can be fixed in the closed position.

[0034] On the other hand, to open the movable walls 76, 78, the nut NT is loosened, the fixing bolt BT is moved from the fixed position shown in Fig. 6(c) to the retracted position shown by the solid line in Fig. 6(b), and then the fixing lever 91 is rotated to the retracted position shown by the dashed line in Fig. 6(b). This allows the movable walls 76, 78 to be opened.

[0035] Next, the configuration of the opening adjustment mechanism 60B (hereinafter, referred to as "opening adjustment mechanism 60" unless there is a need to distinguish between them) will be described with reference to Fig. 7(a) to Fig. 7(d). Fig. 7(a) is a perspective view showing the configuration of the primary exhaust port 41 in a fully open state, and Fig. 7(b) is a plan view showing the configuration of the primary exhaust port 41 in a fully open state. Meanwhile, Fig. 7(c) is a perspective view showing the primary exhaust port 41 in a fully closed state, and Fig. 7(d) is a plan view showing the primary exhaust port 41 in a fully closed state.

[0036] As shown in Figures 7(a) and 7(b), the opening adjustment mechanism 60 is provided corresponding to each primary discharge port 41, and includes a shielding plate 62 having a role of shielding a part or the whole of the opening of the discharge port 41, a swing arm 64 that slides the shielding plate 62 in a direction toward or away from the rotor 28 (see Figure 4), and a drive unit 67 that drives the swing arm 64. The shielding plate 62 has a substantially rectangular outer shape in a plan view, and a shaft support unit 62A is provided on the upper surface of the outer end. The shielding plate 62 is inserted into an opening (not shown) provided in the rear wall portion 72, and is arranged to be movable in a direction toward or away from the rotating structure 20 (hereinafter referred to as a reciprocating direction).

[0037] In addition, guide blocks 63A, 63B for guiding the movement of the shielding plate 62 are arranged on both sides of the shielding plate 62, and a retaining block 63C is installed between the blocks 63A, 63B and attached to the shielding plate 62. This guides the shielding plate 62 so that it moves only in the reciprocating direction.

[0038] 7(a), the swing arm 64 is a rod-shaped member with a substantially rectangular cross section, and has through holes 64A, 64B at the upper end and the center, respectively. A long hole 64C is provided at the lower end of the swing arm 64, and the swing arm 64 is rotatably connected to the shielding plate 62 by inserting a mounting pin P1 inserted into the pivot portion 62A of the shielding plate 62 through the long hole 64C. The swing arm 64 is supported rotatably while being sandwiched between the support bases 65, 66 by inserting a pin P2, which is attached so as to penetrate the upper ends of the pair of support bases 65, 66 erected on the shielding plate 62, through a through hole 64B provided at the center.

[0039] The pair of support bases 65, 66 are disposed to face each other with the shielding plate 62 therebetween, and have the function of guiding the reciprocating movement of the shielding plate 62, similar to the above-mentioned guide blocks 63A, 63B. The longitudinal dimension L of the long hole 64C in the above-mentioned swing arm 64 is set to be equal to or longer than the dimension required for the shielding plate 62 to move between the position shown in Fig. 7(b) where the primary discharge port 41 is fully opened and the position shown in Fig. 7(d) where the primary discharge port 41 is fully closed.

[0040] As shown in Fig. 7(a) and Fig. 7(b), the driving unit 67 is an extension mechanism driven by an electric motor, and has one end rotatably connected to a pivot support 72W provided on the rear wall 72, and has an extension arm 67A configured to be extendable and retractable. The mounting pin P3 attached to the tip of the extension arm 67A is inserted into the through hole 64A of the swing arm 64, so that the swing arm 64 is rotatably connected to the extension arm 67A. As shown in Fig. 7(a) and Fig. 7(b), the shielding plate 62 moves outward via the swing arm 64 as the extension arm 67A contracts. This allows the primary discharge port 41 to be fully opened.

[0041] 7(c) and 7(d), the extension of the telescopic arm 67A causes the shielding plate 62 to move inward via the swinging arm 64, thereby fully closing the primary discharge outlet 41. Also, as shown by the dashed line in FIG. 7(b), the size of the opening of the primary discharge outlet 41, in other words, the opening area, can be adjusted by adjusting the amount of extension of the drive unit 67 via the control panel 100, which will be described later, thereby adjusting the size of the crushed pieces discharged from the primary discharge outlet 41.

[0042] In this way, by reciprocating the oscillating arm 64 using the driving force of the drive unit 67 located directly above the shielding plate 62, the outward protrusion of the main body 11 can be reduced compared to when the drive unit 67 is located longitudinally outside the shielding plate 62.

[0043] In this embodiment, the driving unit 67 is an extension mechanism driven by an electric motor, but it may be an extension mechanism driven by hydraulic pressure. However, when hydraulic pressure is used, it is necessary to separately provide a position sensor or the like to check the amount of displacement of the shielding plate 62, so it is more preferable to use an electric motor as in this embodiment.

[0044] 3, a pulley 68 fixed to the rotation axis AX of the rotating structure 20 is attached to the underside of the rotation support part 18. A transmission means (not shown) such as a belt is stretched between this pulley 68 and the drive part 12 installed at the rear of the main body 11, and the rotation axis AX is rotationally driven by the drive part 12 (see FIG. 2) via the transmission means.

[0045] Next, a cleaning operation using the rotating structure 20 shown in FIG. 4 will be described. The control panel 100 (see FIG. 1) has a switch 101 for executing a cleaning operation mode, and the cleaning operation is executed by operating this switch 101. In this cleaning operation, the control panel 100 rotates the rotating structure 20 for a certain period of time (for example, 10 minutes) while controlling the opening adjustment mechanism 60 so that the primary discharge port 41 is in a fully open state. By executing such a cleaning operation mode, the debris remaining on the upper surface of the shielding plate 62 and on the inside of the wall portion 70 can be discharged from the primary discharge port 41. Therefore, when the movable walls 76, 78 are opened, the amount of debris remaining on the inside of the wall portion 70 can be reduced, making it easier to perform maintenance work.

[0046] Furthermore, when changing the type of crushed material, it is necessary to remove the crushed pieces remaining in the wall portion 70, and in such a case, by performing the above-mentioned cleaning operation, it is possible to prevent different types of crushed pieces from being mixed in. Furthermore, in the cleaning operation, an example is given in which the opening adjustment mechanism 60 is controlled so that the primary discharge port 41 is fully open, but the control panel 100 may also control the opening adjustment mechanism 60 so that the size of the opening area of ​​the primary discharge port 41 changes stepwise during the cleaning operation. In this case as well, it is possible to remove the crushed pieces remaining on the upper surface of the shielding plate 62 and around it.

[0047] According to the crushing device 10 of this embodiment, the size of the opening of the primary discharge port 41 can be adjusted by biasing the shielding plate 62 in a direction approaching or moving away from the rotating structure 20 using the driving unit 67 disposed between the swing arm 64 and the wall portion 70. Therefore, the size of the opening of the primary discharge port 41 can be adjusted while suppressing an increase in the size of the crushing device 10.

[0048] Moreover, according to the crushing device 10 of this embodiment, the inside of the wall portion 70 can be easily accessed by opening the movable walls 76, 78. This makes it easier to perform maintenance work such as replacing the rotating structure 20 and the hammers 23, 27, 29, etc., arranged inside the wall portion 70, and improves the workability of the maintenance work.

[0049] The present invention can be implemented in various forms that include improvements, modifications, or variations based on the knowledge of a person skilled in the art without departing from the spirit of the present invention. In addition, the present invention can be implemented in a form in which any of the invention-specific features are replaced with other technologies within the scope of the same action or effect. [Explanation of symbols]

[0050] 10 Crushing Equipment 11 Main unit 12 Drive unit 41,41A,41B,41C Temporary discharge port 60,60A,60B,60C Aperture adjustment mechanism 62 Shielding Plate 64 Swing Arm 65,66 Drive unit 67 Drive unit 67A Telescopic arm 70 Wall 72 Rear wall 74 Front wall 76,78 Movable wall 80A, 80B, 80C, 80D, 80E Sliding plates 100 Control panel (control section)

Claims

1. A crushing device comprising a rotating structure to which a striking member used in a crushing process is attached, a wall portion surrounding the rotating structure, and a main body rotatably supporting the rotating structure, the crushing device being provided with an adjustment mechanism for adjusting the size of an opening of a discharge port provided on the bottom side of the main body in order to crush an input object into crushed pieces using the striking member and to discharge the crushed pieces, the adjustment mechanism includes an opening adjustment plate disposed to pass through an opening provided in the wall portion, a swing arm pivotally supported by the opening adjustment plate, and a drive unit disposed between the swing arm and the wall portion and having a function of adjusting the size of the opening of the exhaust outlet by biasing the opening adjustment plate via the swing arm in a direction toward or away from the rotating structure, a support portion having a guide function for supporting the swing arm so as to be swingable and for guiding the opening adjustment plate to move in a direction approaching or moving away from the rotating structure; Crushing equipment.

2. A control unit is provided for controlling the drive of the drive unit and the rotating structure, The control unit is configured to be able to execute a cleaning mode for a predetermined time in which the exhaust outlet is fully opened via the drive unit while rotating the rotating structure. The crushing device according to claim 1.

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