Vertical crushing system based on variable-diameter crushing cavity

Abstract

The invention provides a vertical crushing system based on a variable-diameter crushing cavity, comprising: a machine body provided with a working cavity; the crushing end of the crushing device is rotationally arranged in the working cavity; the lining plate assembly comprises a plurality of arc-shaped plates, the arc-shaped plates are hinged to the interior of the working cavity, and in the rotating direction of the crushing end of the crushing device, the tail of the front arc-shaped plate in the adjacent arc-shaped plates is located on the inner side of the head of the rear arc-shaped plate, and a gap is formed between the front arc-shaped plate and the rear arc-shaped plate; and the control module is used for controlling the first driving mechanism so as to adjust the crushing cavity to the diameter corresponding to the target particle size and enable the gap width to be not larger than the target particle size, and controlling the rotating speed corresponding to the crushing end of the crushing device to the target particle size. According to the vertical crushing system based on the variable-diameter crushing cavity, the crushing cavity can be matched with rotation speed adjustment of the crushing end of the crushing device through stepless adjustment of the diameter, and accurate and flexible control over the material crushing granularity is achieved.

Description

Technical Field

[0001] This disclosure relates to the field of crushing technology, and in particular to a vertical crushing system based on a variable diameter crushing chamber. Background Technology

[0002] Vertical crushers (such as vertical shaft impact crushers) are widely used in material crushing in industries such as mining, building materials, and metallurgy. In existing technology, vertical crushers typically use fixed liners, and the size of their crushing chamber is not adjustable.

[0003] Vertical crushers with fixed liners have several drawbacks, such as: limited particle size control methods, with product particle size only controllable to a limited extent by the crushing shaft speed, making it difficult to adapt to diverse and high-standard particle size requirements; the fixed cavity type cannot achieve optimal crushing effect for materials with different hardness or properties, and cannot meet the crushing needs of multiple target particle sizes in one machine; wet and sticky materials are prone to clogging, and when processing materials with high moisture content (such as wet coal and clay), the material easily adheres to the smooth and uniform inner wall of the fixed liner, forming "scaling", which reduces the effective crushing space, drastically reduces crushing efficiency, and may even cause blockage and shutdown, requiring frequent manual cleaning and affecting continuous production. Summary of the Invention

[0004] This disclosure aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the purpose of this disclosure is to provide a vertical crushing system based on a variable diameter crushing chamber.

[0006] To achieve the above objectives, this disclosure provides a vertical crushing system based on a variable-diameter crushing chamber, comprising: a machine body having a working chamber; a crushing device having a crushing end rotatably disposed within the working chamber; a liner assembly comprising: a plurality of arc-shaped plates hinged within the working chamber, wherein the plurality of arc-shaped plates are sequentially arranged along the circumference of the crushing end of the crushing device to form the crushing chamber, wherein, in the rotational direction of the crushing end of the crushing device, the tail of the preceding arc-shaped plate is located inside the head of the following arc-shaped plate, forming a gap, and the crushing chamber is used to allow material to pass through; a first driving mechanism having its power output end connected to the power input ends of the plurality of arc-shaped plates, and the first driving mechanism being used to drive the plurality of arc-shaped plates to rotate synchronously; and a control module having the control module being used to control the first driving mechanism to adjust the diameter of the crushing chamber to the target particle size, and to ensure that the gap width is not greater than the target particle size, and to control the rotational speed of the crushing end of the crushing device to the target particle size.

[0007] Optionally, the first driving mechanism includes: a turntable, which is rotatably mounted on the machine body and has a central hole, with the crushing end of the crushing device passing through the central hole; the power input ends of the plurality of arc-shaped plates extend out of the machine body and are connected to the turntable; a first driving member, which is mounted on the machine body and has its power output end connected to the power input end of the turntable, and is used to drive the turntable to rotate, thereby causing the plurality of arc-shaped plates to rotate synchronously; wherein, the signal output end of the control module is connected to the signal input end of the first driving member, and the control module is used to establish a first correspondence between the rotation angle of the turntable and the diameter of the crushing chamber, and to control the first driving member according to the first correspondence to adjust the diameter of the crushing chamber to the target particle size.

[0008] Optionally, the first driving component includes a servo electric actuator and a servo driver; wherein, the cylinder end of the servo electric actuator is hinged to the machine body, and the push rod end of the servo electric actuator is hinged to the turntable away from the center hole, and the servo electric actuator is used to drive the turntable to rotate; the power output end of the servo driver is connected to the power input end of the servo electric actuator, and the signal output end of the control module is connected to the signal input end of the servo driver, and the control module is used to establish a second correspondence between the rotation angle of the turntable and the push rod extension of the servo electric actuator, and control the servo driver to drive the servo electric actuator according to the second correspondence to adjust the rotation angle of the turntable to the target particle size.

[0009] Optionally, the first driving mechanism further includes: a first acquisition module, which is used to acquire the rotation angle of the turntable, and the signal input terminal of the control module is connected to the signal output terminal of the first acquisition module, and the control module is used to control the first driving member according to the rotation angle acquired by the first acquisition module; and a second acquisition module, which is used to acquire the rotation torque of the turntable, and the signal input terminal of the control module is connected to the signal output terminal of the second acquisition module, and the control module is used to control the first driving member according to the rotation torque acquired by the second acquisition module.

[0010] Optionally, the system further includes an alarm module, the signal input terminal of which is connected to the signal output terminal of the control module; wherein, the control module is used to control the alarm module to issue an alarm message and control the first driving component to drive the turntable to stop rotating when the rotational torque collected by the second acquisition module is greater than a preset torque, and then control the first driving component to drive the turntable to rotate in the opposite direction by a preset angle.

[0011] Optionally, the edge of the turntable is provided with a plurality of notches along the circumference of the central hole, and protrusions are formed between adjacent notches; the first driving mechanism further includes: a mechanical stop, the mechanical stop is disposed on the body and located within the notch, and when the gap is at its maximum width, the mechanical stop and the protrusion abut against each other.

[0012] Optionally, the turntable has multiple strip-shaped holes arranged circumferentially along the central hole; the arc-shaped plate is provided with a connecting rod, and a slider is provided at the end of the connecting rod away from the arc-shaped plate, the central axis of the connecting rod and the hinge central axis of the arc-shaped plate do not coincide; wherein, the end of the connecting rod away from the arc-shaped plate extends out of the machine body, and the slider is located in the strip-shaped hole, when the turntable rotates, the slider and the strip-shaped hole slide relative to each other and drive the arc-shaped plate to rotate.

[0013] Optionally, the system further includes a cleaning device, which includes an air compressor and multiple air knives. The multiple air knives are disposed on the outer side of the arc-shaped plate and are respectively disposed at the multiple gaps. The air inlet end of the air knife is connected to the air outlet end of the air compressor, and the air outlet end of the air knife faces the gap along the length of the gap. The signal output end of the control module is connected to the signal input end of the air compressor.

[0014] Optionally, the crushing device includes: a crushing shaft, multiple hammers, and a second drive mechanism; wherein, the crushing shaft is rotatably disposed within the working chamber, and the multiple arc-shaped plates are sequentially disposed on the outer side of the crushing shaft along its circumference to form the crushing chamber; the multiple hammers are spaced apart on the crushing shaft along its axial direction, and are sequentially distributed along its circumference, with adjacent hammers on the circumference of the crushing shaft partially overlapping in the axial direction; the second drive mechanism is disposed on the machine body, and its power output end is connected to the power input end of the crushing shaft, and the second drive mechanism is used to drive the crushing shaft to rotate; the signal output end of the control module is connected to the signal input end of the second drive mechanism, and the control module is used to control the second drive mechanism to drive the crushing shaft to a rotational speed corresponding to the target particle size.

[0015] Optionally, the system further includes a reflux pipe, which is disposed on the machine body, and the first end of the reflux pipe is connected to the discharge port at the bottom of the working chamber, and the second end of the reflux pipe is connected to the inlet at the top of the working chamber.

[0016] The technical solution provided in this disclosure may include the following beneficial effects: On the one hand, the stepless adjustment of the crushing chamber diameter, combined with the rotational speed adjustment of the crushing end of the crushing device, enables precise and flexible control of the material particle size. The multi-method control not only adapts to diverse and high-standard particle size requirements, but also achieves optimal crushing effect for materials with different hardness or characteristics. At the same time, the variable diameter crushing chamber can also meet the crushing needs of multiple target particle sizes in one machine. On the other hand, the crushing chamber utilizes the rotating and tilting structure of the arc plate to form a chamber wall with dynamically changing diameter. This allows the continuous impact of rotating material to actively destroy the adhesion layer on the inner wall, achieving self-cleaning. This reduces the compression of the crushing space, significantly reduces the risk of blockage and shutdown, and ensures high crushing efficiency.

[0017] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a top cross-sectional view of a vertical crushing system based on a variable-diameter crushing chamber according to an embodiment of this disclosure. Figure 2 This is a top view schematic diagram of a vertical crushing system based on a variable diameter crushing chamber according to an embodiment of this disclosure; Figure 3 This is a rear cross-sectional schematic diagram of a vertical crushing system based on a variable-diameter crushing chamber according to an embodiment of this disclosure; As shown in the figure: 1. Liner assembly, 11. Arc plate, 12. Gap, 13. Crushing chamber, 14. Connecting rod, 15. Slider; 2. First drive mechanism; 21. Turntable; 22. Servo electric actuator; 23. Servo driver; 24. Notch; 25. Protrusion; 26. Mechanical stop; 27. Strip hole; 3. Wind blade; 4. Body; 41. Working chamber; 5. Crushing device; 51. Crushing shaft; 52. Hammer; 53. Second drive mechanism; 6. Return pipe. Detailed Implementation

[0019] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, this disclosure proposes a vertical crushing system based on a variable-diameter crushing chamber 13, including: a machine body 4, a crushing device 5, a liner assembly 1, a first drive mechanism 2, and a control module (not shown in the figure). The machine body 4 is provided with a working chamber 41, and the crushing end of the crushing device 5 is rotatably disposed in the working chamber 41. The liner assembly 1 includes: multiple arc-shaped plates 11, which are hinged in the working chamber 41, and the multiple arc-shaped plates 11 are sequentially disposed along the circumference of the crushing end of the crushing device 5 on the outside of the crushing end of the crushing device 5 to form a crushing chamber 13. In the direction of rotation, the tail of the previous arc plate 11 is located inside the head of the next arc plate 11 and forms a gap 12. The crushing chamber 13 is used to pass in materials. The power output end of the first drive mechanism 2 is connected to the power input end of the multiple arc plates 11 respectively. The first drive mechanism 2 is used to drive the multiple arc plates 11 to rotate synchronously. The control module is used to control the first drive mechanism 2 to adjust the diameter of the crushing chamber 13 to the target particle size and to make the width of the gap 12 not greater than the target particle size. It also controls the rotation speed of the crushing end of the crushing device 5 to the target particle size.

[0021] It is understandable that, since multiple arc-shaped plates 11 are arranged sequentially along the circumference of the crushing end of the crushing device 5 on the outer side of the crushing end of the crushing device 5 to form a crushing chamber 13, and the tail of the previous arc-shaped plate 11 is located inside the head of the next arc-shaped plate 11 to form a gap 12, the power output end of the first drive mechanism 2 is connected to the power input end of the multiple arc-shaped plates 11 respectively, so that the multiple arc-shaped plates 11 can rotate synchronously under the drive of the first drive mechanism 2, thereby realizing the stepless adjustment of the diameter of the crushing chamber 13.

[0022] On the one hand, the stepless adjustment of the diameter of the crushing chamber 13 can be combined with the speed adjustment of the crushing end of the crushing device 5 to achieve precise and flexible control of the crushing particle size of the material. The multi-means control method can not only adapt to diverse and high-standard particle size requirements, but also achieve the best crushing effect for materials with different hardness or characteristics. At the same time, the variable diameter crushing chamber 13 can also meet the crushing needs of multiple target particle sizes in one machine.

[0023] On the other hand, the crushing chamber 13 utilizes the rotating and tilting structure of the arc plate 11 to form a chamber wall with dynamically changing diameter. This allows the continuous impact of rotating material to actively destroy the adhesion layer of the material on the inner wall, achieving self-cleaning. This reduces the compression of the crushing space, significantly lowers the risk of blockage and shutdown, and ensures high crushing efficiency.

[0024] It should be noted that the vertical crushing system of this embodiment takes "cutting and crushing", "crushing diameter change" and "self-cleaning" as its core mechanisms. Through the synchronous drive diameter change design of multiple arc plates 11, it breaks through the limitations of traditional processes and achieves the crushing effect of "crushing both dry and wet materials, selecting particle size, automatic cleaning and one-time molding".

[0025] The machine body 4 is used to support the crushing device 5, the liner assembly 1, the first drive mechanism 2, etc. The specific type of the machine body 4 can be set according to actual needs and is not limited thereto. For example, the machine body 4 may include a frame, a base, and a cover. The frame is set on the base and has an internal cavity as a working chamber 41. The cover is set on the top of the working chamber 41. Furthermore, the bottom of the working chamber 41 is set as a bucket-shaped structure as the discharge port of the crushed material, and the cover has an opening leading to the top of the crushing chamber 13 as the feed port of the uncrushed material.

[0026] The crushing device 5 is used to crush the material inside the crushing chamber 13 by utilizing the impact force of rotation and in conjunction with the inner wall of the crushing chamber 13. For example, if the target particle size is set to 6mm, the distance between the inner wall of the crushing chamber 13 and the crushing end of the crushing device 5 is controlled at 6mm by adjusting the diameter of the crushing chamber 13. The specific type of crushing device 5 can be set according to actual needs and is not limited thereto.

[0027] Multiple arc-shaped plates 11 in the liner assembly 1 rotate synchronously to achieve adjustment of the diameter of the crushing chamber 13 (e.g., within a diameter range of 15 mm). The specific type of arc-shaped plate 11 can be set according to actual needs and is not limited thereto. For example, the arc-shaped plate 11 has an arc-shaped structure and is hinged in the working chamber 41 by a hinge shaft.

[0028] In addition, the adjustment of the diameter of the crushing chamber 13 based on the rotation of the arc plate 11 will cause the width of the gap 12 at the beginning and end of the adjacent arc plates 11 to change.

[0029] To further explain, on the one hand, the arc plate 11 adopts a "head and tail tangential cross-hugging" design. On the tangential projection of the working cavity 41 circle, the tail end of the first arc plate 11 and the head of the second arc plate 11 cross and overlap to form a "roof tile" structure, which mechanically prevents the material from being injected straight into the gap 12.

[0030] On the other hand, the crushing end of the crushing device 5 is designed to rotate in the opening direction of the gap 12. This design causes the material to move closely against the inner wall of the arc plate 11 under the action of centrifugal force and impact force. Its main direction is from the open side of the gap 12 (towards the outside of the arc plate 11) to the closed side (towards the inside of the arc plate 11), which greatly increases the difficulty of the material flowing back into the gap 12 in terms of dynamics.

[0031] In summary, the liner assembly 1 actively utilizes the rotational kinetic energy of the crushing end of the crushing device 5 and the centrifugal motion of the material, rather than attempting to utilize the blocking structure. Thus, the liner assembly 1 achieves perfect dynamic self-sealing by utilizing kinematics and centrifugal force.

[0032] Specifically, the liner assembly 1 forms a mechanical barrier (“roof tile” structure): the curved plate 11 intersects tangentially at both ends, like roof tiles, physically preventing the possibility of material being injected directly into the gap 12 tangentially.

[0033] The liner assembly 1 achieves dynamic sealing (“follow-flow” guidance): the rotation direction of the crushing end of the crushing device 5 is carefully designed to ensure that the huge centrifugal force it generates and the mainstream direction of the material flow are such that the material is close to the working surface and flows from the “open side” to the “closed side” of the gap 12. For the material to enter the gap 12, it needs to go against this powerful material flow, which is extremely difficult in dynamics.

[0034] Different gap sizes 12 correspond to different working modes of the liner assembly 1.

[0035] For example, in the “seamless” fine crushing mode, the gap 12 is zero in width, the overlap of adjacent arc plates 11 is sealed, and the material adheres tightly to the inner wall of the crushing chamber 13 under the action of centrifugal force. It is repeatedly impacted by the crushing end of the crushing device 5 until the particle size is small enough and then discharged. There is no escape path.

[0036] For example, in a slotted crushing mode, such as when the width of slot 12 is 3mm (where the anti-sticking effect is optimal), slot 12 is not a uniform annular slot, but rather a localized, inclined opening at each overlap. The wet coal material, driven by centrifugal force and the crushing end of the crushing device 5, has an extremely high tangential velocity and moves closely against the inner wall of the arc-shaped plate 11. When the material reaches the overlap, it faces a narrow, inclined opening moving in the opposite direction. Like a vehicle speeding through a narrow, reverse-moving slot, most of the material has no time to react and cannot change direction against its own enormous momentum, thus being "thrown" through and continuing to circulate and crush within the closed crushing chamber 13. Even in extreme cases where material enters slot 12, it loses the high-energy environment of the crushing chamber 13 and therefore does not significantly affect the product particle size.

[0037] The liner assembly 1 of this embodiment has at least the following core advantages: Ensuring crushing quality: This fundamentally prevents large pieces of material that meet the particle size requirements from escaping due to insufficient crushing, thus ensuring the uniformity of particle size distribution in the finished products.

[0038] Protecting equipment safety: It prevents high-hardness material particles from entering the area outside the arc plate 11, avoiding abnormal wear, jamming or damage to components such as the hinge shaft.

[0039] Improved system reliability: By combining dynamic sealing with process operation, downtime caused by material escape is reduced and continuous operation capability is improved.

[0040] In summary, the static geometric relationship of the arc plate 11 is perfectly coupled with the dynamic movement direction of the crushing end of the crushing device 5, creating a "dynamic sealing effect" based on fluid mechanics and kinematics. This allows the adjustable liner to not only achieve the anti-sticking function during operation, but also to maintain the "sealing" and "efficiency" of the crushing chamber 13 to the maximum extent, thus solving the core contradiction between "adjustment" and "sealing" in the adjustable chamber technology.

[0041] In addition, for materials that enter the gap 12 in extreme cases, since the width of the gap 12 is no greater than the target particle size, the impact of material escape on product quality is fundamentally eliminated.

[0042] For example, when the target particle size is 6mm, the maximum working gap 12 set by the system is 5mm. This means that even if a very small amount of material escapes from the gap 12, its particle size is limited to below 5mm, fully meeting the target requirement of ≤6mm, and is not considered a non-conforming product.

[0043] This design transforms "escape" from a "quality defect" into "harmless, minimal amount of fine particle discharge," thereby ensuring the quality of the product discharged from the crushing chamber 13 while achieving the function of "expanding the gap 12 to prevent sticking."

[0044] When the target particle size is small (generally the minimum is 3mm), the distance between the arc plate 11 and the crushing end of the crushing device 5 needs to be set to be small. Due to the hinge structure of the arc plate 11, the gap 12 increases as the distance between the arc plate 11 and the crushing end of the crushing device 5 decreases. In this case, the structure can be designed to prevent the gap 12 from being wider than the target particle size.

[0045] The first drive mechanism 2 is used to drive multiple arc plates 11 to rotate synchronously. The specific type of the first drive mechanism 2 can be set according to actual needs and is not limited thereto.

[0046] The control module is used to control the diameter of the crushing chamber 13 and the rotation speed of the crushing end of the crushing device 5, so as to accurately and flexibly achieve the target particle size through the cooperation of the two control methods. The specific type of the control module can be set according to actual needs and there is no restriction. For example, the control module can be a PLC controller.

[0047] like Figure 2 and Figure 3 As shown, in some embodiments, the first driving mechanism 2 includes a turntable 21 and a first driving member. The turntable 21 is rotatably mounted on the machine body 4 and has a central hole. The crushing end of the crushing device 5 passes through the central hole. The power input ends of multiple arc-shaped plates 11 extend out of the machine body 4 and are connected to the turntable 21. The first driving member is mounted on the machine body 4, and its power output end is connected to the power input end of the turntable 21. The first driving member is used to drive the turntable 21 to rotate, thereby causing the multiple arc-shaped plates 11 to rotate synchronously. The signal output end of the control module is connected to the signal input end of the first driving member. The control module is used to establish a first correspondence between the rotation angle of the turntable 21 and the diameter of the crushing chamber 13, and to control the first driving member according to the first correspondence to adjust the diameter of the crushing chamber 13 to the target particle size.

[0048] It is understandable that, since the turntable 21 is rotatably mounted on the machine body 4, and the power input ends of the multiple arc plates 11 extend out of the machine body 4 and are connected to the turntable 21, the power output end of the first drive member is connected to the power input end of the turntable 21, so that the first drive member can drive the turntable 21 to rotate, thereby driving the multiple arc plates 11 to rotate synchronously, thereby realizing the stepless adjustment of the diameter of the crushing chamber 13.

[0049] In addition, the control module establishes a first correspondence between the rotation angle of the turntable 21 and the diameter of the crushing chamber 13, and controls the first driving component according to the first correspondence, thereby adjusting the diameter of the crushing chamber 13 to the diameter corresponding to the target particle size, thereby ensuring high crushing accuracy.

[0050] It should be noted that the turntable 21 is provided with a central hole, thus forming a hollow structure. In addition, the crushing end of the crushing device 5 passes through the central hole, thereby ensuring the concentric setting of the turntable 21 and the crushing end of the crushing device 5, which is conducive to the stable and precise adjustment of the diameter of the crushing chamber 13. The specific type of the turntable 21 can be set according to actual needs and there is no restriction. For example, the turntable 21 is a disc-shaped structure, which is installed on the machine cover at the top of the working chamber 41 using a large support bearing. At the same time, the support bearing has an opening concentric with the central hole of the turntable 21 to allow the crushing end of the crushing device 5 to pass through.

[0051] The first driving component is used to drive the turntable 21 to rotate, so as to drive multiple arc plates 11 to rotate synchronously. The specific type of the first driving component can be set according to actual needs and there is no restriction. For example, the first driving component can be a linear driving component such as a hydraulic push rod, an electric push rod, or a pneumatic push rod, or a rotary driving component such as a hydraulic motor or a rotary motor.

[0052] Among them, the synchronous rotation structure based on turntable 21 has at least the following advantages: Absolute synchronization: The rigid mechanical connection ensures that the movement of multiple curved plates 11 is completely synchronized, with no cumulative error.

[0053] Simplified structure: Multiple first driving components are simplified into one, which greatly reduces the complexity of the actuators and control system.

[0054] Improved accuracy: Eliminates synchronization errors caused by multi-actuator coordinated control.

[0055] Easy maintenance: All motion mechanisms are concentrated on the top turntable 21, making them easy to observe, maintain and repair.

[0056] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the first driving component includes a servo electric actuator 22 and a servo driver 23. The cylinder end of the servo electric actuator 22 is hinged to the machine body 4, and the push rod end of the servo electric actuator 22 is hinged to the turntable 21 away from the central hole. The servo electric actuator 22 drives the turntable 21 to rotate. The power output end of the servo driver 23 is connected to the power input end of the servo electric actuator 22, and the signal output end of the control module is connected to the signal input end of the servo driver 23. The control module establishes a second correspondence between the rotation angle of the turntable 21 and the push rod extension of the servo electric actuator 22, and controls the servo driver 23 to drive the servo electric actuator 22 according to the second correspondence to adjust the rotation angle of the turntable 21 to the target particle size.

[0057] Understandably, since the cylinder end of the servo electric push rod 22 is hinged to the machine body 4, and the push rod end of the servo electric push rod 22 is hinged to the turntable 21 away from the center hole, and the power output end of the servo driver 23 is connected to the power input end of the servo electric push rod 22, the servo electric push rod 22 can drive the turntable 21 to rotate by extension and retraction under the drive of the servo driver 23, thereby realizing the synchronous rotation of multiple arc plates 11, and thus realizing the stepless adjustment of the diameter of the crushing chamber 13.

[0058] In addition, the control module establishes a second correspondence between the rotation angle of the turntable 21 and the extension of the servo electric push rod 22, and controls the servo driver 23 to drive the servo electric push rod 22 according to the second correspondence, thereby adjusting the rotation angle of the turntable 21 to the target particle size, and then adjusting the diameter of the crushing chamber 13 to the target particle size to ensure high crushing accuracy.

[0059] It should be noted that the servo electric actuator 22 is used to drive the turntable 21 to rotate by the extension and retraction of the actuator, and the servo driver 23 is used to drive the extension and retraction of the servo electric actuator 22. The specific types of the servo driver 23 and the servo electric actuator 22 can be set according to actual needs, and there are no restrictions on them.

[0060] In some embodiments, the first driving mechanism 2 further includes: a first acquisition module and a second acquisition module. The first acquisition module is used to acquire the rotation angle of the turntable 21, and the signal input terminal of the control module is connected to the signal output terminal of the first acquisition module. The control module is used to control the first driving member according to the rotation angle acquired by the first acquisition module. The second acquisition module is used to acquire the rotation torque of the turntable 21, and the signal input terminal of the control module is connected to the signal output terminal of the second acquisition module. The control module is used to control the first driving member according to the rotation torque acquired by the second acquisition module.

[0061] It is understandable that by using the settings of the first acquisition module, the rotation angle of the turntable 21 can be acquired, thereby facilitating precise control of the diameter of the crushing chamber 13 based on the rotation angle of the turntable 21 acquired by the first acquisition module; by using the settings of the second acquisition module, the rotation torque of the turntable 21 can be acquired, thereby facilitating precise control of the diameter of the crushing chamber 13 based on the rotation torque of the turntable 21 acquired by the second acquisition module.

[0062] Specifically, the signal input terminal of the control module is connected to the signal output terminal of the first acquisition module, and the control module controls the first driving component according to the rotation angle acquired by the first acquisition module, thereby realizing the position control mode of the first driving component, which facilitates precise control of the turntable 21 angle and realizes the diameter of the crushing chamber 13 corresponding to the target particle size.

[0063] Furthermore, the signal input terminal of the control module is connected to the signal output terminal of the second acquisition module, and the control module controls the first driving component according to the rotational torque acquired by the second acquisition module, thereby realizing the torque control mode of the first driving component, which facilitates the positioning of the extreme position of the turntable 21 and the overall overload protection.

[0064] It should be noted that the first acquisition module is used to acquire the rotation angle of the turntable 21. The specific type of the first acquisition module can be set according to actual needs and there is no restriction. For example, the first acquisition module can be the encoder built into the servo electric actuator 22. The encoder can accurately control the extension of the servo electric actuator 22, and then accurately control the rotation angle of the turntable 21 by controlling the extension of the servo electric actuator 22.

[0065] The second acquisition module is used to acquire the rotational torque of the turntable 21. The specific type of the second acquisition module can be set according to actual needs and there is no restriction. For example, the second acquisition module can be a torque sensor. Using a torque sensor, it is easy to locate the extreme position of the turntable 21 based on torque feedback, and at the same time realize overload protection during operation.

[0066] For example, for the positioning of the extreme position of turntable 21, the control module adopts the torque control mode for the first driving component. When the rotational torque collected by the second acquisition module reaches the corresponding torque, it can be determined that turntable 21 has reached the extreme position and the position is recorded.

[0067] In some embodiments, the system further includes an alarm module, the signal input terminal of which is connected to the signal output terminal of the control module. The control module is used to control the alarm module to issue an alarm message and control the first driving member to stop rotating the turntable 21 when the rotational torque acquired by the second acquisition module exceeds a preset torque, and then control the first driving member to rotate the turntable 21 in the opposite direction by a preset angle.

[0068] Understandably, since the signal input terminal of the alarm module is connected to the signal output terminal of the control module, the control module can control the alarm module to issue alarm information, thereby prompting the operator to respond in time. Specifically, when the rotational torque collected by the second acquisition module is greater than the preset torque, it indicates that the first drive component is stuck in the process of driving the turntable 21, resulting in the torque exceeding the limit. At this time, the control module controls the alarm module to issue alarm information and controls the first drive component to stop rotating the turntable 21, thereby preventing the first drive component, turntable 21, arc plate 11, etc. from being overloaded and damaged. Subsequently, the control module controls the first drive component to rotate the turntable 21 in the opposite direction by a preset angle, thereby freeing the arc plate 11 from the stuck state and resetting it, thus achieving overload protection.

[0069] It should be noted that during operation, the control module performs position control of the first drive component based on the first acquisition module, and at the same time, it also performs overload monitoring of the first drive component based on the second acquisition module. When jamming overload occurs, the control module switches from position control mode to torque control mode to perform overload protection action, namely: reverse rotation of turntable 21.

[0070] In addition, the alarm module is used to issue alarm information under the control of the control module. The specific type of alarm module can be set according to actual needs and there are no restrictions on it. For example, the alarm module can be a sound alarm, a light alarm, a sound and light alarm, etc.

[0071] like Figure 2 and Figure 3 As shown, in some embodiments, the edge of the turntable 21 is provided with a plurality of notches 24 along the circumference of the central hole, and a protrusion 25 is formed between adjacent notches 24; the first drive mechanism 2 also includes a mechanical stop 26, which is disposed on the body 4 and located in the notch 24. When the gap 12 is at its maximum width, the mechanical stop 26 and the protrusion 25 abut against each other.

[0072] It is understandable that, since the edge of the turntable 21 has multiple notches 24 along the circumference of the central hole, and protrusions 25 are formed between adjacent notches 24, the mechanical stop 26 is set on the body 4 and located in the notches 24, so that the mechanical stop 26 can cooperate with the protrusions 25 of the turntable 21 to limit the turntable 21, thereby ensuring the safe and stable operation of the turntable 21.

[0073] It should be noted that the arrangement of the notch 24 not only reduces the weight of the turntable 21, but also facilitates the avoidance of the mechanical stop 26, thus achieving effective cooperation between the mechanical stop 26 and the protrusion 25.

[0074] The specific type of mechanical stop 26 can be set according to actual needs and there is no limitation. For example, mechanical stop 26 can be a columnar structure arranged on the cover at the top of the working chamber 41.

[0075] Among them, multiple mechanical stops 26 can be set, and different mechanical stops 26 can respectively realize the maximum angle limit and minimum angle limit of the turntable 21, thereby accurately controlling the maximum and minimum diameter of the crushing chamber 13.

[0076] In addition, corresponding soft limits and torque limits can be set in the control of the servo electric actuator 22.

[0077] Furthermore, regarding the number of notches 24 and protrusions 25, for example, notches 24 can be set to three, the three notches 24 forming three protrusions 25, the three protrusions 25 being linked to three arc plates 11 respectively, and the servo electric actuator 22 being hinged to one of the protrusions 25.

[0078] like Figure 2 and Figure 3As shown, in some embodiments, the turntable 21 has multiple strip holes 27 arranged circumferentially along the central hole; the arc plate 11 is provided with a connecting rod 14, and a slider 15 is provided at the end of the connecting rod 14 away from the arc plate 11. The central axis of the connecting rod 14 and the hinge central axis of the arc plate 11 do not coincide. The end of the connecting rod 14 away from the arc plate 11 extends out of the machine body 4, and the slider 15 is located within the strip holes 27. When the turntable 21 rotates, the slider 15 and the strip holes 27 slide relative to each other, causing the arc plate 11 to rotate.

[0079] It is understandable that since the end of the connecting rod 14 away from the arc plate 11 extends out of the machine body 4, and the slider 15 is located in the strip hole 27 on the turntable 21, when the turntable 21 rotates, multiple sets of sliders 15 and strip holes 27 can be used to drive multiple arc plates 11 to rotate synchronously, thereby realizing stepless adjustment of the diameter of the crushing chamber 13.

[0080] Specifically, when the first drive mechanism 2 drives the turntable 21 to rotate, the strip hole 27 on the turntable 21 changes position relative to the fixed coordinate system. Furthermore, due to the constraint of the strip hole 27, the slider 15 embedded therein is forced to slide along the strip hole 27, while driving the arc plate 11 to rotate around its hinge axis, thereby realizing the radial contraction or expansion of the arc plate 11, and thus realizing the diameter adjustment of the crushing chamber 13.

[0081] Multiple strip holes 27 are arranged in the same pattern on the same turntable 21 to ensure that multiple arc plates 11 move in complete synchronization.

[0082] For example, three strip holes 27 are respectively provided on the three protrusions 25 of the turntable 21, and the slider 15 can be a blocky smooth structure or a bearing structure.

[0083] like Figure 1 As shown, in some embodiments, the system further includes a cleaning device, which comprises an air compressor (not shown) and multiple air knives 3. The multiple air knives 3 are disposed on the outer side of the arc-shaped plate 11 and are respectively disposed at multiple gaps 12. The air inlet end of the air knife 3 is connected to the air outlet end of the air compressor, and the air outlet end of the air knife 3 faces the gap 12 along the length direction of the gap 12. The signal output terminal of the control module is connected to the signal input terminal of the air compressor.

[0084] Understandably, since the air inlet of the air knife 3 is connected to the air outlet of the air compressor, and the air outlet of the air knife 3 faces the gap 12 along its length, the air knife 3 can convert the compressed gas from the air compressor into a high-speed and uniform thin-film air curtain delivered to the gap 12, thereby forming a circumferential cyclone within the crushing chamber 13 and achieving efficient cleaning of the crushing chamber 13. Thus, by using the cleaning device, it can be ensured that there are no residues after sample preparation in the crushing chamber 13, preventing cross-contamination.

[0085] In addition, since the signal output terminal of the control module is connected to the signal input terminal of the air compressor, the control module can control the air compressor, thereby facilitating the automated operation of the system.

[0086] It should be noted that during the operation of the crushing chamber 13, the inclined diameter-changing structure of the arc plate 11 is used to achieve self-cleaning. After the crushing chamber 13 finishes operating, the cleaning device consisting of the air compressor and multiple air knives 3 effectively reduces the material residue in the crushing chamber 13.

[0087] The air compressor and air knife 3 are used to work together to achieve a clean cyclone in the crushing chamber 13. The specific type of air compressor and air knife 3 can be set according to actual needs and there are no restrictions on it.

[0088] When the air knife 3 cleans the crushing chamber 13, the rotary table 21 can reciprocate near the expansion limit position, thereby cooperating with the air knife 3 to achieve efficient cleaning.

[0089] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the crushing device 5 includes: a crushing shaft 51, multiple hammers 52, and a second drive mechanism 53. The crushing shaft 51 is rotatably disposed within the working chamber 41, and multiple arc-shaped plates 11 are sequentially disposed along the circumference of the crushing shaft 51 on its outer side to form a crushing chamber 13. Multiple hammers 52 are spaced apart along the axial direction of the crushing shaft 51, and are sequentially distributed along the circumference of the crushing shaft 51. Adjacent hammers 52 in the circumferential direction of the crushing shaft 51 partially overlap in the axial direction. The second drive mechanism 53 is disposed on the machine body 4, and its power output end is connected to the power input end of the crushing shaft 51. The second drive mechanism 53 is used to drive the crushing shaft 51 to rotate. The signal output end of the control module is connected to the signal input end of the second drive mechanism 53, and the control module is used to control the second drive mechanism 53 to drive the crushing shaft 51 to a rotational speed corresponding to the target particle size.

[0090] It is understandable that, since multiple hammers 52 are spaced apart along the axial direction of the crushing shaft 51, and the power output end of the second drive mechanism 53 is connected to the power input end of the crushing shaft 51, the second drive mechanism 53 can drive the crushing shaft 51 to rotate. This allows the multiple hammers 52 on the crushing shaft 51 to achieve impact crushing of the material in the crushing chamber 13. Furthermore, since the multiple hammers 52 are distributed sequentially along the circumference of the crushing shaft 51, adjacent hammers 52 in the circumferential direction of the crushing shaft 51 partially overlap in the axial direction of the crushing shaft 51. This allows the multiple hammers 52 to fully cover the material when it moves along the axial direction of the crushing shaft 51, preventing large-sized materials from escaping and ensuring efficient crushing of the material.

[0091] In addition, since the signal output terminal of the control module is connected to the signal input terminal of the second drive mechanism 53, the control module can control the second drive mechanism 53. Specifically, the control module controls the second drive mechanism 53 to drive the crushing shaft 51 to the rotational speed corresponding to the target particle size, thereby cooperating with the diameter adjustment of the crushing chamber 13 to achieve precise crushing of materials.

[0092] It should be noted that the crushing shaft 51, hammer 52, and second drive mechanism 53 are used to cooperate in crushing the material in the crushing chamber 13. The specific types of the crushing shaft 51, hammer 52, and second drive mechanism 53 can be set according to actual needs, and there are no restrictions on them.

[0093] For example, the bottom and top of the crushing shaft 51 are respectively arranged on the frame by bearings. For example, the bottom of the crushing shaft 51 is arranged on the frame at the bottom of the working chamber 41 by bearings, and the top of the crushing shaft 51 extends through the cover at the top of the working chamber 41 and is connected to the cover by bearings.

[0094] For example, there are three hammers 52, which are respectively set on the crushing shaft 51. The three hammers 52 are distributed at intervals along the axial direction of the crushing shaft 51, and the three hammers 52 are arranged sequentially along the circumference of the crushing shaft 51 and overlap one end to the other.

[0095] For example, the second drive mechanism 53 can be a drive motor, with pulleys respectively provided on the top of the output shaft of the drive motor and the top of the crushing shaft 51, and the two pulleys are driven by a belt.

[0096] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the system further includes a return pipe 6, which is disposed on the machine body 4, and the first end of the return pipe 6 is connected to the discharge port at the bottom of the working chamber 41, and the second end of the return pipe 6 is connected to the feed port at the top of the working chamber 41.

[0097] Understandably, since the first end of the return pipe 6 is connected to the discharge port at the bottom of the working chamber 41 and the second end of the return pipe 6 is connected to the feed port at the top of the working chamber 41, the return pipe 6 can provide a return channel for the airflow generated by the rotation of the crushing shaft 51 and the multiple hammers 52 on the crushing shaft 51. This not only suppresses dust but also reduces the loss of moisture from the material.

[0098] It should be noted that the return pipe 6 is used for the return of airflow in the crushing chamber 13. The specific type of the return pipe 6 can be set according to actual needs, and there are no restrictions on it.

[0099] The system in this embodiment employs a highly reliable combination of mechanical and electrical control to ensure stable operation even in harsh environments with high temperatures, high dust levels, and strong vibrations, and achieves one-button mode switching and automated control. Furthermore, the introduction of intelligent control enables the equipment to automatically switch operating modes according to different materials and particle size requirements, improving reliability, safety, and intelligence.

[0100] Specifically, in this embodiment, the system uses multiple hinged arc-shaped plates 11 that encircle each other to form the inner wall of the crusher liner. Each set of arc-shaped plates 11 rotates around its hinge axis under the drive of the same first drive mechanism 2, realizing radial contraction and expansion. In addition, a turntable 21 structure concentric with the crushing shaft 51 is adopted. The turntable 21 is driven to rotate slightly by a servo electric actuator 22. The three strip holes 27 on the turntable 21 push the slider 15 connecting the arc-shaped plates 11, realizing the synchronous radial movement of the three arc-shaped plates 11. This allows for precise control of the size of the gap 12 formed between the arc-shaped plates 11, achieving dynamic and intelligent control of the diameter and sealing of the crushing chamber 13.

[0101] In addition, the system of this embodiment has at least the following advantages: The innovative turntable 21 synchronous drive mechanism adopts a turntable 21 mechanism concentric with the crushing shaft 51. The turntable 21 is driven to rotate slightly by a single servo electric actuator 22. Multiple strip holes 27 on the turntable 21 push the slider 15 connected to the arc plate 11 to achieve synchronous radial movement of multiple arc plates 11, thereby accurately adjusting the diameter of the crushing chamber 13. Moreover, the mechanical synchronization is absolutely reliable with no cumulative error, which greatly simplifies the actuator and improves the synchronization accuracy and reliability.

[0102] Dual-mode intelligent control of position and torque: Combining high-precision position control with torque control that can sense resistance, it not only ensures the accuracy of gap 12 control, but also realizes the smoothness of system zeroing, overload protection during operation, and intelligent reset after jamming, which greatly improves the reliability and intelligence level of the system.

[0103] Robust design without in-cavity sensors: The entire control system does not rely on direct gap 12 sensors (such as laser sensors) installed inside the dust-filled crushing chamber 13. Instead, it indirectly ensures the gap 12 by controlling the position of the actuator (servo electric actuator 22). This semi-closed-loop solution has strong anti-interference ability and is particularly suitable for harsh working conditions.

[0104] Multiple safety protection mechanisms: Combining program soft limit, electrical torque limit and mechanical hard stop triple protection, it ensures that the rotor will not collide with the liner under any abnormal conditions, and the safety level is high.

[0105] Structural innovation: The "tangential cross-encircling" arc plate 11 design, combined with the rotation of the crushing shaft 51 along the gap 12, forms a dual seal of mechanical and dynamic properties.

[0106] Innovative process principle: The tolerance design of "gap 12 width not greater than the target particle size" solves the contradiction between adjustment and quality in principle.

[0107] Multi-functional process adaptability: By organically combining the above optimization points, an intelligent, reliable, and adaptive closed-loop system is formed, enabling the vertical crusher to operate efficiently and with high quality under the two contradictory working conditions of "fine crushing" and "wet material anti-sticking", which significantly improves the market adaptability and economic benefits of the equipment.

[0108] It should be noted that in the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0109] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0110] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0111] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A vertical crushing system based on a variable diameter crushing chamber, characterized in that, The utility model relates to a kind of crusher, including: Machine body, the machine body is provided with working cavity; Crushing device, the crushing end of the crushing device is rotationally arranged in the working cavity; Lining plate assembly, the lining plate assembly includes: multiple arc plates, the arc plate is hinged in the working cavity, and the multiple arc plates are sequentially arranged on the outside of the crushing end of the crushing device along the circumference of the crushing end of the crushing device and form the crushing cavity, wherein, in the rotation direction of the crushing end of the crushing device, the tail of the former arc plate is located in the inside of the head of the latter arc plate and forms gap in adjacent arc plate, the crushing cavity is used to pass into material; First drive mechanism, the power output end of the first drive mechanism is connected with the power input end of the multiple arc plates respectively, and the first drive mechanism is used to drive the multiple arc plates to rotate synchronously; Control module, the control module is used to control the first drive mechanism, to adjust the diameter of the crushing cavity to target granularity corresponding, and make the gap width not more than the target granularity, and, control the rotating speed of the crushing end of the crushing device to target granularity corresponding.

2. The vertical crushing system based on a variable crushing chamber according to claim 1, characterized in that, The first drive mechanism includes: Rotating disc, the rotating disc is rotationally arranged on the machine body and is provided with central hole, and the crushing end of the crushing device penetrates the central hole, and the power input end of the multiple arc plates extends out of the machine body and is connected with the rotating disc respectively; First driving part, the first driving part is arranged on the machine body, and the power output end of the first driving part is connected with the power input end of the rotating disc, and the first driving part is used to drive the rotating disc to rotate, to drive the multiple arc plates to rotate synchronously; Wherein, the signal output end of the control module is connected with the signal input end of the first driving part, and the control module is used to establish the first corresponding relationship between the rotating angle of the rotating disc and the diameter of the crushing cavity, and according to the first corresponding relationship, the first driving part is controlled, to adjust the diameter of the crushing cavity to target granularity corresponding.

3. The vertical crushing system based on a variable crushing chamber according to claim 2, characterized in that The first driving part includes: Servo electric push rod and servo driver; Wherein, the cylinder end of the servo electric push rod is hinged on the machine body, and the push rod end of the servo electric push rod is hinged away from the central hole of the rotating disc, and the servo electric push rod is used to drive the rotating disc to rotate; The power output end of the servo driver is connected with the power input end of the servo electric push rod, and the signal output end of the control module is connected with the signal input end of the servo driver, and the control module is used to establish the second corresponding relationship between the rotating angle of the rotating disc and the push rod elongation of the servo electric push rod, and according to the second corresponding relationship, the servo driver is controlled to drive the servo electric push rod, to adjust the rotating angle of the rotating disc to target granularity corresponding.

4. The vertical crushing system based on a variable crushing chamber according to claim 2, characterized in that, The first drive mechanism further includes: First acquisition module, the first acquisition module is used to collect the rotating angle of the rotating disc, and the signal input end of the control module is connected with the signal output end of the first acquisition module, and the control module is used to control the first driving part according to the rotating angle collected by the first acquisition module; A second collecting module is configured to collect the rotating torque of the rotating disc, and a signal input end of the control module is connected with a signal output end of the second collecting module, and the control module is configured to control the first driving member according to the rotating torque collected by the second collecting module.

5. The vertical crushing system based on a variable crushing chamber according to claim 4, characterized in that, The system further comprises: An alarm module, and a signal input end of the alarm module is connected with a signal output end of the control module; The control module is configured to control the alarm module to send an alarm information and control the first driving member to drive the rotating disc to stop rotating when the rotating torque collected by the second collecting module is greater than a preset torque, and then control the first driving member to drive the rotating disc to rotate in a reverse direction by a preset angle.

6. The vertical crushing system based on the variable-diameter crushing cavity according to claim 2, wherein The edge of the rotating disc is provided with a plurality of notches in the circumferential direction of the central hole, and a protrusion is formed between adjacent notches; The first driving mechanism further comprises a mechanical stopper arranged on the machine body and located in the notch, and the mechanical stopper and the protrusion abut when the gap is at the maximum width.

7. The vertical crushing system based on the variable-diameter crushing cavity according to claim 2, wherein The rotating disc is provided with a plurality of strip-shaped holes in the circumferential direction of the central hole; The arc-shaped plate is provided with a connecting rod, and an end of the connecting rod away from the arc-shaped plate is provided with a sliding block, and the central axis of the connecting rod and the hinged central axis of the arc-shaped plate do not coincide; The end of the connecting rod away from the arc-shaped plate extends out of the machine body, and the sliding block is located in the strip-shaped hole, and when the rotating disc rotates, the sliding block and the strip-shaped hole slide relative to each other and drive the arc-shaped plate to rotate.

8. The vertical crushing system based on a variable crushing chamber according to claim 1, characterized in that, The system further comprises: A cleaning device, and the cleaning device comprises an air compression mechanism and a plurality of air knives, the plurality of air knives are arranged on the outer side of the arc-shaped plate, and the plurality of air knives are respectively arranged at the plurality of gaps, the air inlet end of the air knife is connected with the air outlet end of the air compression mechanism, and the air outlet end of the air knife faces the gap in the length direction of the gap; The signal output end of the control module is connected with the signal input end of the air compression mechanism.

9. The vertical crushing system based on a variable crushing chamber according to claim 1, characterized in that, The crushing device comprises: A crushing shaft, a plurality of hammer heads, and a second driving mechanism; The crushing shaft is rotationally arranged in the working cavity, and the plurality of arc-shaped plates are sequentially arranged on the outer side of the crushing shaft in the circumferential direction of the crushing shaft and form the crushing cavity, the plurality of hammer heads are arranged on the crushing shaft in the axial direction and are sequentially distributed in the circumferential direction of the crushing shaft, and the adjacent hammer heads in the circumferential direction of the crushing shaft partially overlap in the axial direction of the crushing shaft; The second driving mechanism is arranged on the machine body, and the power output end of the second driving mechanism is connected with the power input end of the crushing shaft, and the second driving mechanism is configured to drive the crushing shaft to rotate. The signal output end of the control module is connected with the signal input end of the second driving mechanism, and the control module is used for controlling the second driving mechanism to drive the crushing shaft to a target particle size corresponding rotating speed.

10. The vertical crushing system based on a variable crushing chamber according to claim 1, characterized in that, The system further comprises: A return pipe is arranged on the machine body, a first end of the return pipe is communicated with the discharging port at the bottom of the working chamber, and a second end of the return pipe is communicated with the feeding port at the top of the working chamber.

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