Granulator

Abstract

The invention relates to a granulator which comprises a rotatable circular mold and a cutter device arranged on the outer side of the circular mold, the cutter device comprises a cutter seat, a cutter rod, a cutter and a control module, and a first through hole is formed in the cutter seat; the cutter rod is arranged in the first through hole in a penetrating manner and is in sliding connection with the cutter seat; the cutter is adjustably arranged at one end of the cutter rod, the control module comprises an actuator, an encoder and a controller, the encoder can detect information of the actuator in real time and feed the information back to the controller, the controller can set a zero position according to the received information, and the controller can control the actuator to operate by taking the length of feed particles as a set distance. According to the feed granulator, the moving distance of the cutter rod can be accurately controlled, so that the distance between the cutter and the ring die is accurately controlled, the length of feed granules is further controlled and adjusted, operation is easy and convenient, time and labor are saved, and the production efficiency of the granulator can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of granulators, and in particular to a granulator. Background Art

[0002] Ring die pellet mill is widely used in the processing of pellet feed. It can directly press raw materials into pellets after crushing, mixing and modulation. It is the key host of feed pellet processing production line, and its performance greatly affects the efficiency of the whole production line. The working principle of ring die pellet mill mainly relies on the mutual extrusion between the ring die and the roller assembly. The material is squeezed out of the hole of the ring die with the extrusion of the roller assembly, and is thrown out from the ring film outlet under the action of centrifugal force. After colliding with the cutting device outside the ring die, it is cut off from the root to form pellets.

[0003] The cutter device in the related art is a fixed cutter. Before the pelletizer is started, the operator needs to adjust the cutter to 2-3mm away from the outer wall of the ring die, rotate it in a tangential direction with the ring die, and lock it. This makes it impossible to accurately control the distance between the cutter and the outer wall of the ring die. The length of the pellets can only rely on the pelletizer operator's perception of the distance. For large pelletizers, for the cutter position at a higher position, the operator needs to stand on a high platform to adjust the distance between the cutter and the outer wall of the ring die. After the operation is completed, the high platform needs to be removed. However, the on-site operating space is limited, which is not conducive to the operation of the pelletizer and affects the production efficiency of the pelletizer. Summary of the invention

[0004] Based on this, it is necessary to provide a pellet mill that can accurately control the moving distance of the cutter rod, so as to accurately control the distance between the cutter and the ring die, and then control and adjust the length of the feed particles. The operation is simple and convenient. Only the set distance needs to be adjusted to adjust the distance between the cutter and the ring die, which saves time and effort and can effectively improve the production efficiency of the pellet mill.

[0005] A pelletizer, characterized in that the pelletizer comprises a rotatable ring die and a cutter device arranged outside the ring die;

[0006] The cutting device comprises:

[0007] A cutter seat, wherein a first through hole is formed on the cutter seat;

[0008] A cutting rod, the cutting rod is inserted into the first through hole and is slidably connected to the cutting seat;

[0009] A cutter, wherein the position of the cutter is adjustably arranged at one end of the cutter rod, the cutter extends toward the ring die, and the cutter forms a cutting angle with the ring die;

[0010] A control module, the control module includes an actuator, an encoder and a controller, the actuator is arranged on the cutter seat, and the actuator is connected to the end of the cutter rod away from the cutter, the actuator is used to drive the cutter rod to move axially along the first perforation; the encoder is connected to the actuator and the controller, the encoder is used to obtain information from the actuator and transmit it to the controller, the controller is connected to the actuator, and the controller is used to control the operation of the actuator according to the received information.

[0011] In one embodiment, the cutter device also includes a connecting bracket, which includes a first connecting part, a second connecting part and a third connecting part connected between the first connecting part and the second connecting part; the first connecting part is connected to the power output end of the actuator; and the second connecting part is connected to the cutter rod.

[0012] In one embodiment, the first connecting portion is connected to the power output end of the actuator through a first bolt;

[0013] And / or, a mounting groove and a second through-hole are provided on the first connecting part, the second through-hole is arranged through the side wall of the first connecting part and is connected with the interior of the mounting groove; the power output end of the actuator is arranged in the mounting groove, the second through-hole is threadedly connected with a fastener, and the fastener can abut against the power output end of the actuator.

[0014] In one embodiment, a third through hole is formed on the second connecting portion, and the cutting rod is inserted into the third through hole. The second connecting portion includes a first side wall, a second side wall, a third side wall and a fourth side wall which are connected in sequence. The first side wall is connected to the third connecting portion. The second side wall, the third side wall and the fourth side wall are each provided with a fourth through hole connected to the third through hole and a second bolt. The second bolt is threadedly inserted into the fourth through hole and is threadedly connected to the fourth through hole. The second bolt can abut against the cutting rod.

[0015] In one embodiment, the actuator includes a driving motor and a screw structure, the screw structure includes a screw and a wire sleeve mounted on the screw, and the screw is connected to the cutting rod; the driving motor is connected to the wire sleeve through a transmission mechanism to drive the wire sleeve to rotate, thereby driving the screw to move axially.

[0016] In one embodiment, a horizontal adjustment groove and a vertical adjustment groove connected to the horizontal adjustment groove are opened at one end of the cutting rod, the cutting knife can move along the extension direction of the horizontal adjustment groove and the vertical adjustment groove, and the cutting knife can be locked to the cutting rod by a third bolt.

[0017] In one of the embodiments, a gasket is further provided between the actuator and the cutter seat.

[0018] In one embodiment, the cutter device further includes a first guard shield and a second guard shield, the first guard shield is disposed on the cutter seat, one end of the first guard shield is hinged to one end of the second guard shield, a guard space is formed between the first guard shield and the second guard shield, and the cutter seat, the cutter rod and the actuator are at least partially disposed in the guard space.

[0019] In one embodiment, the cutting device further includes a position detection module and a locking module, wherein the position detection module is used to detect whether the first guard cover and the second guard cover are closed, and the locking module is configured to lock the first guard cover and the second guard cover when the position detection module detects that the first guard cover and the second guard cover are closed.

[0020] In one embodiment, the cutting device also includes an arc-top tool holder connected to the granulator, the cutting seat is arranged on the arc-top tool holder, a fifth through hole is arranged on the arc-top tool holder, the cutting rod is passed through the fifth through hole, and an observation window is arranged on the arc-top tool holder.

[0021] In the above scheme, by adjusting the position of the cutter at one end of the cutter rod, the position between the cutter and the ring die can be adjusted. By setting the control module, the encoder can detect the information of the actuator in real time and feed it back to the controller. The controller can set the zero position according to the received information, and the controller can use the length of the feed particles as the set distance to control the operation of the actuator to drive the cutter rod to move the set distance. The present application can accurately control the moving distance of the cutter rod, thereby accurately controlling the distance between the cutter and the ring die, and then controlling and adjusting the length of the feed particles. The operation is simple and convenient. The distance between the cutter and the ring die can be adjusted by adjusting the set distance, which saves time and effort and can effectively improve the production efficiency of the pellet mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] FIG. 1 is a schematic structural diagram of a granulator shown in an embodiment of the present application.

[0025] FIG. 2 is a schematic diagram of the exploded structure of a cutter device according to an embodiment of the present application.

[0026] FIG. 3 is a schematic diagram of a partial structure of a cutting device shown in an embodiment of the present application.

[0027] FIG. 4 is a schematic structural diagram of a cutter device according to an embodiment of the present application.

[0028] Description of Reference Numerals

[0029] 10. Cutter device; 20. Granulator; 100. Door assembly; 110. Ring die; 120. Press roller assembly; 130. Spindle assembly; 200. Gear box; 300. Cutter seat; 310. Gasket; 400. Cutter rod; 500. Cutter; 600. Actuator; 610. Drive motor; 620. Screw structure; 630. Transmission mechanism; 700. Connecting bracket; 710. First connecting part; 711. First bolt; 712. Fastener; 720. Second connecting part; 721. Second bolt; 730. Third connecting part; 800. First shield; 810. Position detection module; 900. Second shield; 1000. Arc top tool holder; 1010. Observation plate; 1020. Sealing gasket. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0036] Referring to FIG. 1 and FIG. 2 , the embodiment of the present application relates to a pelletizer 20, which includes a door assembly 100 and a gear box 200. The door assembly 100 is provided with a rotatable ring die 110, a pressure roller assembly 120 and a main shaft assembly 130. The door assembly 100 is provided on the gear box 200, and the ring die 110 is connected to the gear box 200. The gear box 200 can drive the ring die 110 to rotate. The main shaft assembly 130 is provided on the gear box 200, and two pressure roller assemblies 120 are provided on the main shaft assembly 130.

[0037] Referring to FIG. 1 , FIG. 2 and FIG. 3 , the cutter device 10 is disposed outside the ring die 110. The cutter device 10 includes a cutter seat 300, a cutter rod 400 and a cutter 500. The cutter seat 300 is provided with a first through hole. The cutter rod 400 is inserted through the first through hole, and the cutter rod 400 is slidably connected to the cutter seat 300. The position of the cutter 500 is adjustable at one end of the cutter rod 400, and the cutter 500 extends toward the ring die 110, and the cutter 500 forms a cutting angle with the ring die 110.

[0038] Specifically, the cutter rod 400 can be slidably connected to the cutter seat 300 along the axial direction of the first through hole. By adjusting the position of the cutter 500 at one end of the cutter rod 400, the position between the cutter 500 and the ring die 110 can be adjusted.

[0039] The cutter bar 400 is connected to the cutter seat 300 by a key, and the cutter bar 400 can move along the axial direction of the cutter seat 300. Grease can also be provided between the cutter bar 400 and the cutter seat 300 to ensure the sliding effect of the cutter bar 400.

[0040] The control module includes an actuator 600, an encoder and a controller. The actuator 600 is arranged on the cutter seat 300, and the actuator 600 is connected to the end of the cutter rod 400 away from the cutter 500. The actuator 600 is used to drive the cutter rod 400 to move along the axial direction of the first perforation. The encoder is connected to the actuator 600 and the controller, and the encoder is used to obtain information from the actuator 600 and transmit it to the controller. The controller is connected to the actuator 600, and the controller is used to control the operation of the actuator 600 according to the received information. Specifically, the encoder is used to obtain information such as the rotation speed, rotation angle and position of the power output end of the actuator 600. The controller is connected to the control terminal.

[0041] In the first embodiment, the working process of the cutting device 10 is as follows:

[0042] S1. The controller controls the actuator 600 to operate so that the actuator 600 drives the cutter bar 400 to move from the initial position to the abutting position, and the encoder detects the information when the actuator 600 drives the cutter bar 400 to move to the abutting position, and transmits it to the controller, and the controller sets the abutting position to zero. At the initial position, the cutter bar 400 is tangent to the door assembly 100. At the abutting position, the cutter 500 is tangent to the ring die 110.

[0043] S2. Input a set distance to the control terminal. The length of the set distance is the length of the feed pellets. The control terminal transmits a signal to the controller, and the controller controls the cutter bar 400 to move the set distance from the contact position. When the cutter bar 400 moves the set distance, the controller controls the cutter bar 400 to stop running to ensure that the cutter 500 stays at the set distance. The ring die 110 and the roller assembly 120 rotate relative to each other. The roller assembly 120 squeezes the material in the ring die 110 from the hole of the roller assembly 120. The cutter 500 can cut the material squeezed out of the ring die 110 from the root, so that the length of the feed pellets is controllable and adjustable.

[0044] It should be noted that: when the feed particles do not meet customer needs, it is only necessary to modify the set distance according to the length of the feed particles at the control terminal. The controller drives the cutting rod 400 to move according to the modified set distance. After the cutting rod 400 moves to the set position, the controller controls the cutting rod 400 to stop running to ensure that the cutter 500 stays at the set distance.

[0045] Referring to FIG. 1 , FIG. 2 and FIG. 3 , according to some embodiments of the present application, optionally, the cutter device 10 further includes a connecting bracket 700, and the connecting bracket 700 includes a first connecting portion 710, a second connecting portion 720 and a third connecting portion 730 connected between the first connecting portion 710 and the second connecting portion 720. The first connecting portion 710 is connected to the power output end of the actuator 600. The second connecting portion 720 is connected to the cutter rod 400.

[0046] Specifically, the first connection part 710 is connected to the power output end of the actuator 600 through the first bolt 711. A first connection hole is provided at the top of the first connection part 710, and a second connection hole is provided at the end of the power output end of the actuator 600. The first bolt 711 is passed through the first connection hole and is threadedly connected to the second connection hole. More specifically, the first bolt 711 is threadedly connected to the first connection hole.

[0047] The first connection part 710 is provided with a mounting groove and a second through hole, and the second through hole is set through the side wall of the first connection part 710 and is connected to the inside of the mounting groove. The power output end of the actuator 600 is provided with a mounting groove, and the first connection hole is connected to the inside of the mounting groove. The second through hole is threadedly connected with a fastener 712, and the fastener 712 can abut against the power output end of the actuator 600. Specifically, the fastener 712 is a fastening screw. The power output end of the actuator 600 is a polygonal structure.

[0048] By providing the fastener 712 , rotation between the power output end of the actuator 600 and the first connecting portion 710 can be prevented.

[0049] Please refer to FIG. 1, FIG. 2 and FIG. 3. According to some embodiments of the present application, optionally, a third through hole is formed on the second connection portion 720, and the cutter rod 400 is inserted into the third through hole. The second connection portion 720 includes a first side wall, a second side wall, a third side wall and a fourth side wall connected in sequence, and the first side wall is connected to the third connection portion 730. The extension direction of the third connection portion 730 is perpendicular to the extension directions of the second connection portion 720 and the first connection portion 710.

[0050] The second side wall, the third side wall and the fourth side wall are all provided with a fourth through hole connected to the third through hole and a second bolt 721 . The second bolt 721 is threadedly inserted into the fourth through hole and is threadedly connected to the fourth through hole. The second bolt 721 can abut against the cutting rod 400 .

[0051] The position between the cutter bar 400 and the second connecting portion 720 can be adjusted by adjusting the second bolts 721 provided on the second side wall, the third side wall and the fourth side wall, and the three second bolts 721 can interact with each other to fix the position between the cutter bar 400 and the second connecting portion 720.

[0052] In the first embodiment, the working process of the cutting device 10 is as follows:

[0053] S1. Loosen the second bolts 721 on the second side wall, the third side wall and the fourth side wall, and adjust the position of the cutter rod 400 so that the cutter 500 is tangent to the ring die 110. Then tighten the second bolts 721 on the second side wall, the third side wall and the fourth side wall to fix the position between the cutter rod 400 and the second connecting part 720. At this time, the encoder detects the position information of the power output end of the actuator 600 and transmits it to the controller. The controller sets the position information to zero.

[0054] S2. The position information of the power output end of the actuator 600 detected by the encoder is deleted in the controller, and a set distance is input to the control terminal. The length of the set distance is the length of the feed particles. The control terminal transmits a signal to the controller, and the controller controls the cutter rod 400 to move the set distance. When the cutter rod 400 moves the set distance, the controller controls the cutter rod 400 to stop running to ensure that the cutter 500 stays at the set distance.

[0055] It should be noted that: when the feed particles do not meet customer needs, it is only necessary to modify the set distance according to the length of the feed particles at the control terminal. The controller drives the cutting rod 400 to move according to the modified set distance. After the cutting rod 400 moves to the set position, the controller controls the cutting rod 400 to stop running to ensure that the cutter 500 stays at the set distance.

[0056] Referring to FIG. 2 , FIG. 3 and FIG. 4 , according to some embodiments of the present application, optionally, the actuator 600 includes a driving motor 610 and a screw rod structure 620, the screw rod structure 620 includes a screw rod and a wire sleeve sleeved on the screw rod, and the screw rod is connected to the cutter rod 400. The driving motor 610 is connected to the wire sleeve through a transmission mechanism 630 to drive the wire sleeve to rotate, thereby driving the screw rod to move axially.

[0057] Specifically, the transmission mechanism 630 includes a first synchronous wheel, a second synchronous wheel and a synchronous belt. The first synchronous wheel is connected to the power output end of the drive motor 610, the second synchronous wheel is sleeved on the outside of the silk sleeve, and the synchronous belt is sleeved on the first synchronous wheel and the second synchronous wheel. The drive motor 610 can drive the first synchronous wheel to rotate, so as to drive the synchronous belt and the second synchronous wheel to rotate, thereby driving the silk sleeve to rotate. When the silk sleeve rotates, it can drive the lead screw to move along the axial direction of the silk sleeve. The axial direction of the silk sleeve is parallel to the axial direction of the first perforation. It should be noted that the power output end of the actuator 600 is one end of the lead screw.

[0058] Please refer to Figures 1, 2 and 3. According to some embodiments of the present application, optionally, a horizontal adjustment groove and a vertical adjustment groove connected to the horizontal adjustment groove are opened at one end of the cutting rod 400, and the cutting knife 500 can move along the extension direction of the horizontal adjustment groove and the vertical adjustment groove, and the cutting knife 500 can be locked to the cutting rod 400 by a third bolt.

[0059] Specifically, the cutter 500 is provided with a third connection hole, and the third bolt is passed through the third connection hole and the horizontal adjustment slot or the vertical adjustment slot and is threadedly connected to the third connection hole. When the position of the cutter 500 relative to the cutter rod 400 needs to be adjusted, it can be achieved by rotating the third bolt.

[0060] Referring to FIG. 1 , FIG. 2 and FIG. 3 , according to some embodiments of the present application, optionally, a gasket 310 is further provided between the actuator 600 and the cutter seat 300. The gasket 310 can be set to different thicknesses according to the use requirements. By providing the gasket 310, the distance between the actuator 600 and the cutter seat 300 can be adjusted to ensure that the actuator 600 and the cutter seat 300 are parallel to each other.

[0061] Please refer to FIG. 2, FIG. 3 and FIG. 4. According to some embodiments of the present application, optionally, the cutter device 10 further includes a first shield 800 and a second shield 900. The first shield 800 is disposed on the cutter seat 300, and one end of the first shield 800 is hinged to one end of the second shield 900, so that the first shield 800 and the second shield 900 can rotate relative to each other. A shielding space is formed between the first shield 800 and the second shield 900, and the cutter seat 300, the cutter rod 400 and the actuator 600 are at least partially disposed in the shielding space.

[0062] Specifically, the cutter device 10 further includes a position detection module 810 and a locking module. The position detection module 810 is used to detect whether the first shield 800 and the second shield 900 are closed. The locking module is configured to lock the first shield 800 and the second shield 900 when the position detection module 810 detects that the first shield 800 and the second shield 900 are closed. The position detection module 810 is arranged outside the first shield 800. The position detection module 810 is a proximity switch. The locking module is electrically connected to the proximity switch. The locking module adopts a known structure.

[0063] Please refer to FIG. 1, FIG. 2 and FIG. 3. According to some embodiments of the present application, optionally, the cutter device 10 further includes an arc top cutter holder 1000 connected to the granulator 20, the cutter seat 300 is arranged on the arc top cutter holder 1000, the arc top cutter holder 1000 is provided with a fifth through hole, and the cutter rod 400 is passed through the fifth through hole. An observation window is arranged on the arc top cutter holder 1000, and an observation plate 1010 is hinged at the observation window. After opening the observation plate 1010, the distance between the cutter 500 and the ring die 110 can be more conveniently observed through the observation window. A sealing gasket 1020 is arranged between the cutter seat 300 and the arc top cutter holder 1000.

[0064] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A granulator, characterized in that: The pelletizer comprises a rotatable ring die and a cutter device arranged outside the ring die; The cutting device comprises: A cutter seat, wherein a first through hole is formed on the cutter seat; A cutting rod, the cutting rod is inserted into the first through hole and is slidably connected to the cutting seat; A cutter, wherein the position of the cutter is adjustably arranged at one end of the cutter rod, the cutter extends toward the ring die, and the cutter forms a cutting angle with the ring die; A control module, the control module includes an actuator, an encoder and a controller, the actuator is arranged on the cutter seat, and the actuator is connected to the end of the cutter rod away from the cutter, the actuator is used to drive the cutter rod to move axially along the first perforation; the encoder is connected to the actuator and the controller, the encoder is used to obtain information from the actuator and transmit it to the controller, the controller is connected to the actuator, and the controller is used to control the operation of the actuator according to the received information.

2. The granulator according to claim 1, characterized in that The cutter device also includes a connecting bracket, which includes a first connecting part, a second connecting part and a third connecting part connected between the first connecting part and the second connecting part; the first connecting part is connected to the power output end of the actuator; and the second connecting part is connected to the cutter rod.

3. The granulator according to claim 2, characterized in that The first connecting portion is connected to the power output end of the actuator through a first bolt; And / or, a mounting groove and a second through-hole are provided on the first connecting part, the second through-hole is arranged through the side wall of the first connecting part and is connected with the interior of the mounting groove; the power output end of the actuator is arranged in the mounting groove, the second through-hole is threadedly connected with a fastener, and the fastener can abut against the power output end of the actuator.

4. The granulator according to claim 2, characterized in that A third through hole is provided on the second connecting portion, and the cutting rod is inserted into the third through hole. The second connecting portion includes a first side wall, a second side wall, a third side wall and a fourth side wall which are connected in sequence. The first side wall is connected to the third connecting portion. The second side wall, the third side wall and the fourth side wall are each provided with a fourth through hole connected to the third through hole and a second bolt. The second bolt is threadedly inserted into the fourth through hole and is threadedly connected to the fourth through hole. The second bolt can abut against the cutting rod.

5. The granulator according to claim 1, characterized in that The actuator includes a driving motor and a screw rod structure, wherein the screw rod structure includes a screw rod and a wire sleeve sleeved on the screw rod, and the screw rod is connected to the cutter rod; the driving motor is connected to the wire sleeve through a transmission mechanism to drive the wire sleeve to rotate, thereby driving the screw rod to move axially.

6. The granulator according to claim 1, characterized in that A horizontal adjustment slot and a vertical adjustment slot connected to the horizontal adjustment slot are provided at one end of the cutter rod. The cutter can move along the extension direction of the horizontal adjustment slot and the vertical adjustment slot, and the cutter can be locked to the cutter rod by a third bolt.

7. The granulator according to claim 1, characterized in that A gasket is also arranged between the actuator and the cutter seat.

8. The granulator according to claim 1, characterized in that The cutter device also includes a first guard shield and a second guard shield, the first guard shield is arranged on the cutter seat, one end of the first guard shield is hinged to one end of the second guard shield, a guard space is formed between the first guard shield and the second guard shield, and the cutter seat, the cutter rod and the actuator are at least partially arranged in the guard space.

9. The granulator according to claim 8, characterized in that The cutter device also includes a position detection module and a locking module. The position detection module is used to detect whether the first shield and the second shield are closed. The locking module is configured to lock the first shield and the second shield when the position detection module detects that the first shield and the second shield are closed.

10. The granulator according to claim 1, characterized in that The cutter device also includes an arc top tool holder connected to the granulator, the cutter seat is arranged on the arc top tool holder, the arc top tool holder is provided with a fifth through hole, the cutter rod is passed through the fifth through hole, and the arc top tool holder is provided with an observation window.

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