Dolomite crushing feed port anti-blocking device

Abstract

The utility model is suitable for broken stone anti -blocking device technical field provides dolomite broken feed port anti -blocking device, including conveyer belt body, its end side is equipped with the discharge gate, is equipped with pressure sensor in the discharge gate, install in the broken mechanism of discharge gate side, the broken mechanism includes: fixed base, fixed base is equipped with three -axis mechanical arm that can rotate horizontally around vertical axis, three -axis mechanical arm includes articulated big arm, small arm and wrist in proper order, the wrist is connected with fixed cover through quick -detach connector, the device is through three -axis mechanical arm flexible adjustment and broken cone special structure realizes efficient anti -blocking and accurate dredging, guarantees production line continuous stable operation, simultaneously, the arc dust-settling water pipe that opens in the broken operation spouts fan -shaped water mist effective dust -setting, improves the working environment, protects personnel health, and the fixed cover bottom wear -resisting ceramic lining ring can resist the wear and tear, prolongs the equipment life, reduced maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of stone crushing anti-blocking devices, and particularly relates to an anti-blocking device for the feed inlet of dolomite crushing. Background Technology

[0002] In the crushing and production process of dolomite, the material is directly poured into the feed inlet and transported by a conveyor belt installed at the feed inlet. However, in actual production, the problem of clogging at the feed inlet occurs frequently.

[0003] The characteristics of dolomite raw materials vary greatly, with inconsistencies in particle size, moisture content, and shape. When dolomite with uneven particle size, high moisture content, or irregular shape is concentrated in the feed inlet, it is very easy to accumulate and get stuck at the feed inlet, eventually causing a blockage.

[0004] Faced with the problem of blockage at the feed inlet, companies generally use air hammers to break up large stones to clear the blockage; however, air hammers have many drawbacks in practical applications.

[0005] First, the impact force and range of action of the pneumatic hammer are relatively limited. Due to the varying distribution and shape of large stones within the feed inlet, it is difficult for the pneumatic hammer to accurately and effectively strike the large stones in the blocked areas. In many cases, the pneumatic hammer can only cause slight damage to the surface of the stone, failing to completely break it, resulting in a long unblocking process. For example, for some irregularly shaped and hard large stones, the pneumatic hammer may need to strike them multiple times to break them, which seriously affects the production progress.

[0006] Secondly, operating a pneumatic hammer poses safety hazards. During operation, manual or robotic arm assistance is required to locate the striking point, forcing operators to approach the blocked feed inlet. During striking, large pieces of stone may fly due to uneven force, posing a serious threat to the operator's personal safety. In addition, the noise and dust generated during pneumatic hammer operation can also harm the operator's health. Long-term exposure to such a working environment can easily lead to occupational diseases such as hearing loss and respiratory illnesses.

[0007] Furthermore, the dust problem in crushing operations cannot be ignored. In dolomite crushing operations, whether large pieces of stone are crushed by pneumatic hammers or by subsequent crushing with crushing cones, a large amount of dust is generated. Existing production equipment is significantly inadequate in dust suppression, and dust quickly spreads throughout the entire work area. This dust not only reduces visibility in the work environment and affects the operator's vision, but also causes serious harm to the operator's respiratory system. At the same time, dust also pollutes the production equipment, affecting its normal operation and service life. Utility Model Content

[0008] This utility model provides a dolomite crushing feed inlet anti-blocking device, which aims to solve the problems of frequent blockage at the feed inlet in existing dolomite crushing production. Existing air hammer unblocking is time-consuming and inefficient due to limited impact force and range of action. It also poses safety hazards and generates noise and dust that harms the health of operators. At the same time, the production equipment has insufficient dust suppression, and the dust spread affects the working environment, personnel health, equipment operation and lifespan.

[0009] This utility model is implemented as follows: a dolomite crushing feed inlet anti-blocking device includes a conveyor belt body, a feed inlet is provided on its end side, and a pressure sensor is provided inside the feed inlet.

[0010] The crushing mechanism is installed beside the feed inlet and includes:

[0011] Fixed base;

[0012] A three-axis robotic arm that can rotate horizontally around a vertical axis is mounted on a fixed base. The three-axis robotic arm includes an upper arm, a lower arm, and a wrist that are hinged together in sequence.

[0013] The wrist is connected to a retaining cover via a quick-release connector;

[0014] An adjusting screw is rotatably fitted inside the fixed cover along its axial direction. The top of the adjusting screw is connected to the output shaft of the servo motor via a coupling. An adjusting block is threaded onto the adjusting screw and slides against the inner wall of the fixed cover.

[0015] The sidewall of the broken block is fixedly connected with a support plate;

[0016] A crushing cone is mounted on the bottom side of the receiving plate via a bearing, and the surface of the crushing cone is coated with tungsten carbide.

[0017] A stepper motor is installed at the top of the receiving plate, and the output shaft of the stepper motor passes through the receiving plate and is coaxially connected to the crushing cone;

[0018] The bottom of the crushing cone is shaped like a frustum cone, and its sidewalls are provided with annular reverse helical blades along the axial direction. The pitch of the reverse helical blades gradually increases along the axial direction, and the groove depth decreases from top to bottom.

[0019] Preferably, the three-axis robotic arm is a multi-degree-of-freedom articulated robotic arm, and a rotary drive motor is provided between the upper arm and the rotating base, and a pitch drive cylinder is provided between the wrist and the lower arm. The rotation angle of the fixed cover is driven by the pitch drive cylinder, so that the axis of the crushing cone always forms an inclination angle of 5° to 15° with the material discharge direction of the discharge port.

[0020] Preferably, the inner wall of the fixed cover is provided with a guide ridge along the axial direction, and the outer side of the adjusting block is provided with a guide groove that slides with the guide ridge.

[0021] Preferably, the quick-release connector includes a snap-fit ​​flange and a hydraulic locking ring. The fixing cover is detachably connected to the wrist via the snap-fit ​​flange, and the hydraulic locking ring is axially locked to the fixing cover via an annular sealing groove.

[0022] Preferably, an L-shaped angle steel bracket is fixed to the side wall of the fixed cover, and an arc-shaped dust suppression water pipe is provided at the suspension end of the angle steel bracket. The axis of the dust suppression water pipe is parallel to the rotation tangent direction of the crushing cone, and multiple fan-shaped spray nozzles are evenly arranged on the pipe wall.

[0023] Preferably, the inlet end of the dust suppression water pipe is connected to an external high-pressure water source hose via a quick-connect clamp, and the outlet end is equipped with a check valve.

[0024] Preferably, the bottom of the fixed cover has a circular through groove coaxial with the crushing cone, the edge of the through groove is provided with a wear-resistant ceramic liner, and the diameter of the through groove is larger than the bottom diameter of the crushing cone.

[0025] Preferably, the pressure sensor is electrically connected to the pitch drive cylinder and the stepper motor.

[0026] Compared with the prior art, the embodiments of this application have the following main advantages:

[0027] Firstly, through the flexible adjustment of the three-axis robotic arm and the special structural design of the crushing cone, this device can quickly and accurately locate and clear the blockage at the feed inlet. During the rotation of the crushing cone, the crushing cone exerts downward pressure and crushing force on the dolomite. At the same time, the reverse spiral blades effectively guide the crushed material downward to prevent re-blockage, thus achieving efficient anti-blockage and precise unblocking, ensuring the continuous and stable operation of the production line.

[0028] Secondly, during crushing operations, the arc-shaped dust suppression water pipes are simultaneously activated, spraying out fan-shaped water mist, which effectively suppresses the dust generated during crushing, improves the working environment, and protects the health of operators. At the same time, the wear-resistant ceramic liner at the bottom of the fixed cover can resist the wear of dolomite on the edge of the through groove during crushing, extending the service life of the equipment and reducing maintenance costs. These two designs work together to achieve both environmentally friendly dust suppression and ensure the long-term stable operation of the equipment. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0031] Figure 3 This is a top view structural diagram of this utility model;

[0032] Figure 4 This is a side view of the structure of this utility model;

[0033] Figure 5 This is a front sectional view of the structure of this utility model;

[0034] In the diagram: 1. Conveyor belt body; 2. Feed inlet; 3. Pressure sensor; 4. Fixed base; 5. Three-axis robotic arm; 501. Upper arm; 502. Lower arm; 503. Wrist; 6. Fixed cover; 7. Adjusting screw; 8. Servo motor; 9. Adjusting block; 10. Support plate; 11. Crushing cone; 12. Stepper motor; 13. Reverse spiral blade; 14. Rotary drive motor; 15. Pitch drive cylinder; 17. Guide rib; 18. Ceramic bushing; 19. Snap-on flange; 20. Hydraulic locking ring; 21. Angle steel bracket; 22. Dust suppression water pipe; 23. Spray nozzle; 24. Check valve; 25. Through groove. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] In the description of this utility model, it should be noted that the terms "inner", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] A dolomite crusher feed inlet anti-clogging device, such as Figure 1-5 As shown, it includes a conveyor belt body 1, with a discharge port 2 on its end side, and a pressure sensor 3 is installed inside the discharge port 2;

[0039] The crushing mechanism is installed beside the discharge port 2. The crushing mechanism includes:

[0040] Fixed base 4;

[0041] A three-axis robotic arm 5 that can rotate horizontally around a vertical axis is provided on the fixed base 4. The three-axis robotic arm 5 includes a large arm 501, a small arm 502 and a wrist 503 that are hinged in sequence.

[0042] The wrist 503 is connected to a retaining cover 6 via a quick-release connector;

[0043] An adjusting screw 7 is rotatably fitted inside the fixed cover 6 along its axial direction. The top end of the adjusting screw 7 is connected to the output shaft of the servo motor 8 via a coupling. An adjusting block 9 is threaded onto the adjusting screw 7 and slides against the inner wall of the fixed cover 6.

[0044] A receiving plate 10 is fixedly connected to the side wall of the broken block;

[0045] A crushing cone 11 is mounted on the bottom side of the receiving plate 10 via a bearing, and the surface of the crushing cone 11 is coated with a tungsten carbide coating.

[0046] A stepper motor 12 is provided on the top of the receiving plate 10. The output shaft of the stepper motor 12 passes through the receiving plate 10 and is coaxially connected to the crushing cone 11.

[0047] The bottom of the crushing cone 11 is shaped like a frustum cone, and its sidewall is provided with annular reverse spiral blades 13 along the axial direction. The pitch of the reverse spiral blades 13 gradually increases along the axial direction, and the groove depth decreases from top to bottom.

[0048] It should be noted that the existing dolomite crushing process often results in blockage at the feed inlet 2. Existing pneumatic hammer unclogging methods are time-consuming and inefficient due to limited impact force and range of action, posing safety hazards and generating noise and dust that harm operator health. Furthermore, insufficient dust suppression in the production equipment leads to dust pollution, impacting the working environment, personnel health, and equipment operation and lifespan. This solution, through precise positioning by a three-axis robotic arm 5 and efficient unclogging design by the crushing cone 11, quickly resolves the blockage problem at the feed inlet 2, ensuring continuous and stable operation of the production line. Simultaneously, the combination of arc-shaped dust suppression water pipes 22 and the wear-resistant ceramic bushing 18 at the bottom of the fixed cover 6 effectively suppresses crushing dust, improves the working environment, protects personnel health, extends equipment lifespan, and reduces maintenance costs. Overall, it achieves synergistic optimization of efficient anti-blockage unclogging, environmental dust suppression, and equipment protection, providing reliable assurance for production operations.

[0049] Specifically, in this embodiment, the solution mainly includes a conveyor belt body 1, through which dolomite is conveyed to the end discharge port 2. The pressure sensor 3 (WIKAA-10) inside the discharge port 2 monitors the discharge situation in real time. When the discharge port 2 shows signs of blockage or has already become blocked, the crushing mechanism starts to work. The three-axis robotic arm 5 on the fixed base 4 can rotate horizontally around the vertical axis to a suitable position through the sequential hinged movement of the upper arm 501, the lower arm 502 and the wrist 503, so that the fixed cover 6 connected by the quick-release connector of the wrist 503 is aligned with the blockage position.

[0050] Servo motor 8 starts, and its output shaft drives the adjusting screw 7 to rotate through the coupling. The adjusting block 9, which is threaded with the adjusting screw 7, moves along the axial direction of the fixed cover 6 under the sliding engagement with the inner wall of the fixed cover 6, thereby driving the receiving plate 10 to adjust to a suitable height. Stepper motor 12 starts, and its output shaft passes through the receiving plate 10 and drives the crushing cone 11, which is mounted on the receiving plate 10 through a bearing, to rotate. The tungsten carbide coating sprayed on the surface of the crushing cone 11 can enhance wear resistance. The bottom end of the crushing cone 11 is truncated cone-shaped, and the annular reverse spiral blades 13 arranged along the axial direction on its side wall can exert downward squeezing and crushing effect on the blocked dolomite during rotation due to the gradually increasing pitch along the axial direction and the decreasing groove depth from top to bottom. At the same time, the special design of the reverse spiral blades 13 can effectively guide the crushed dolomite downward to prevent re-blockage, thereby achieving anti-blockage and unblocking of the discharge port 2.

[0051] In a further preferred embodiment of this utility model, such as Figure 4-5 As shown, the three-axis robotic arm 5 is a multi-degree-of-freedom joint type robotic arm, and a rotary drive motor 14 is provided between the upper arm 501 and the rotating base, and a pitch drive cylinder 15 is provided between the wrist 503 and the lower arm 502. The rotation angle of the fixed cover 6 is driven by the pitch drive cylinder 15, so that the axis of the crushing cone 11 always forms an inclination angle of 5° to 15° with the material discharge direction of the discharge port 2.

[0052] In this embodiment, the rotary drive motor 14 between the upper arm 501 and the rotating base is started, driving the upper arm 501 to rotate horizontally around the rotating base, initially adjusting the approximate orientation of the robotic arm. Then, the forearm 502 moves in tandem with the upper arm 501, and at the same time, the pitch drive cylinder 15 between the wrist 503 and the forearm 502 starts working. Through the extension and retraction of the cylinder, the wrist 503 is driven to pitch, thereby causing the fixed cover 6 to rotate accordingly. Since the rotation angle of the fixed cover 6 is driven by the pitch drive cylinder 15, the axis of the crushing cone 11 can always form an inclination angle of 5° to 15° with the material discharge direction of the discharge port 2, accurately aligning with the blockage position. Afterward, the servo motor 8 drives the adjusting screw 7 to rotate, causing the adjusting block 9 to adjust the crushed block to a suitable height. The stepper motor 12 then drives the crushing cone 11 to rotate. Utilizing the special design of its bottom conical truncated cone structure and the annular reverse spiral blades 13 on the surface, the blockage of dolomite is crushed and guided downward, thereby achieving the anti-blockage and unblocking of the discharge port 2.

[0053] In a further preferred embodiment of this utility model, such as Figure 4-5 As shown, the inner wall of the fixed cover 6 is provided with a guide ridge 17 along the axial direction, and the outer side of the adjusting block 9 is provided with a guide groove that slides with the guide ridge 17.

[0054] In this embodiment, the guide ridge 17 slides with the guide groove, which guides and limits the adjustment block 9, so that the adjustment block 9 can slide stably along the axis of the fixed cover 6, thereby driving the broken block to be precisely adjusted to a suitable height.

[0055] In a further preferred embodiment of this utility model, such as Figure 4-5 As shown, the quick-release connector includes a snap-fit ​​flange 19 and a hydraulic locking ring 20. The fixed cover 6 is detachably connected to the wrist 503 via the snap-fit ​​flange 19, and the hydraulic locking ring 20 is axially locked to the fixed cover 6 via an annular sealing groove.

[0056] In this embodiment, the snap-on flange 19 quickly and detachably connects the fixing cover 6 to the wrist 503, which is simple to operate and can ensure initial stability. Subsequently, the hydraulic locking ring 20 is embedded in the annular sealing groove on the fixing cover 6, and axial locking is achieved through hydraulic action, which further enhances the stability of the fixing cover 6 and prevents loosening during operation.

[0057] In a further preferred embodiment of this utility model, such as Figure 4-5 As shown, an L-shaped angle steel bracket 21 is fixed to the side wall of the fixed cover 6. An arc-shaped dust-suppressing water pipe 22 is provided at the suspension end of the angle steel bracket 21. The axis of the dust-suppressing water pipe 22 is parallel to the rotation tangent direction of the crushing cone 11, and multiple fan-shaped spray nozzles 23 are evenly arranged on the pipe wall of the dust-suppressing water pipe 22.

[0058] In this embodiment, the L-shaped angle steel bracket 21 serves as a support, and the arc-shaped dust suppression water pipe 22 installed at its suspended end has its axis parallel to the rotational tangent direction of the crushing cone 11. During the crushing operation, multiple fan-shaped spray nozzles 23 evenly arranged on the pipe wall of the dust suppression water pipe 22 can be opened simultaneously to spray out fan-shaped water mist. This water mist can effectively suppress the dust generated during the crushing process and play a role in dust suppression.

[0059] In a further preferred embodiment of this utility model, such as Figure 4-5 As shown, the inlet of the dust suppression water pipe 22 is connected to an external high-pressure water source hose via a quick-release clamp, and the outlet is equipped with a check valve 24.

[0060] In this embodiment, when the crushing operation begins, an external high-pressure water source enters the dust suppression water pipe 22 through a hose. Water is sprayed out in a fan shape from multiple fan-shaped spray nozzles 23 evenly arranged on the pipe wall. Since the axis of the dust suppression water pipe 22 is parallel to the rotational tangent of the crushing cone 11, it can effectively suppress the dust generated by crushing and play a dust suppression role.

[0061] In a further preferred embodiment of this utility model, such as Figure 4-5 As shown, the bottom of the fixed cover 6 is provided with a circular through groove 25 coaxial with the crushing cone 11. The edge of the through groove 25 is provided with a wear-resistant ceramic liner 18, and the diameter of the through groove 25 is larger than the bottom diameter of the crushing cone 11.

[0062] In this embodiment, the through groove 25 provides ample space for the rotation and operation of the crushing cone 11. At the same time, the wear-resistant ceramic bushing 18 provided at the edge of the through groove 25 can effectively resist the wear of the dolomite on the edge of the through groove 25 during the crushing process and extend the service life of the equipment.

[0063] In a further preferred embodiment of this utility model, such as Figure 4-5 As shown, the pressure sensor 3 is electrically connected to the pitch drive cylinder 15 and the stepper motor 12.

[0064] In this embodiment, the conveyor belt continuously delivers dolomite to the discharge port 2, and the pressure sensor 3 monitors the material discharge situation at the discharge port 2 in real time; when the discharge port 2 is blocked, the pressure sensor 3 detects an abnormal pressure change that exceeds a preset threshold and will quickly send an electrical signal.

[0065] On one hand, the signal is transmitted to the pitch drive cylinder 15, and the cylinder immediately starts working, pushing the wrist 503 to perform pitch movement; on the other hand, the signal is also transmitted to the stepper motor 12 at the same time, and the stepper motor 12 starts immediately, driving the crushing cone 11 to start rotating and begin the crushing process.

[0066] Working principle: Dolomite is conveyed to the end discharge port 2 via the conveyor belt body 1. The pressure sensor 3 installed in the discharge port 2 monitors the discharge situation in real time. When the discharge port 2 shows signs of blockage or has already become blocked, the crushing mechanism starts working.

[0067] First, the three-axis robotic arm 5 on the fixed base 4 begins to move; the rotary drive motor 14 between the upper arm 501 and the rotating base starts, driving the upper arm 501 to rotate horizontally around the rotating base, initially adjusting the approximate position of the robotic arm; then, the lower arm 502 moves in conjunction with the upper arm 501, and at the same time, the pitch drive cylinder 15 between the wrist 503 and the lower arm 502 starts to work, driving the wrist 503 to pitch through the extension and retraction of the cylinder, thereby causing the fixed cover 6 to produce a corresponding pitch rotation, ultimately ensuring that the axis of the crushing cone 11 always forms an angle with the material discharge direction of the discharge port 2, accurately aligning with the blockage position;

[0068] After the robotic arm is adjusted to the position of the fixed cover 6, the fixed cover 6 and the wrist 503 are quickly and detachably connected by the snap-on flange 19, which is easy to operate and can ensure initial stability. Subsequently, the hydraulic locking ring 20 is embedded in the annular sealing groove on the fixed cover 6, and axial locking is achieved through hydraulic action, which further enhances the stability of the fixed cover 6 and prevents it from loosening during operation.

[0069] Next, the servo motor 8 starts, and its output shaft drives the adjusting screw 7 to rotate through the coupling; the adjusting block 9, which is threaded with the adjusting screw 7, slides stably along the axis of the fixed cover 6 under the sliding cooperation of the guide protrusion 17 on the inner wall of the fixed cover 6 and its own guide groove, thereby driving the receiving plate 10 and the broken block to be precisely adjusted to the appropriate height.

[0070] Subsequently, the stepper motor 12 starts, and its output shaft passes through the receiving plate 10 and drives the crushing cone 11, which is mounted on the receiving plate 10 through a bearing, to rotate. The tungsten carbide coating sprayed on the surface of the crushing cone 11 can enhance its wear resistance. Its bottom end is shaped like a truncated cone, and the annular reverse spiral blades 13 are arranged along the axial direction on the side wall. During the rotation, due to the gradual increase of the pitch along the axial direction and the decrease of the groove depth from top to bottom, it can exert downward squeezing and crushing effect on the blocked dolomite. At the same time, the special design of the reverse spiral blades 13 can effectively guide the crushed dolomite downward to prevent it from blocking again, thereby achieving the anti-blocking and unblocking of the discharge port 2.

[0071] Meanwhile, during the crushing operation, an external high-pressure water source enters the dust suppression water pipe 22 through a hose. The dust suppression water pipe 22 is supported by an L-shaped angle steel bracket 21 on the side wall of the fixed cover 6. The arc-shaped dust suppression water pipe 22 with its suspended end has multiple fan-shaped spray nozzles 23 evenly arranged on the pipe wall that can be opened simultaneously to spray out fan-shaped water mist, effectively suppressing the dust generated during the crushing process and playing a dust suppression role.

[0072] In addition, a circular through groove 25 coaxial with the crushing cone 11 is provided at the bottom of the fixed cover 6. The diameter of the through groove 25 is larger than the diameter of the bottom end of the crushing cone 11, providing sufficient space for the rotation and operation of the crushing cone 11. At the same time, the wear-resistant ceramic bushing 18 set at the edge of the through groove 25 can effectively resist the wear of the dolomite on the edge of the through groove 25 during the crushing process and extend the service life of the equipment.

Claims

1. A dolomite crusher feed inlet anti-clogging device, characterized in that, include: The conveyor belt body has a discharge port on its end side, and a pressure sensor is installed inside the discharge port. The crushing mechanism is installed beside the feed inlet and includes: Fixed base; A three-axis robotic arm that can rotate horizontally around a vertical axis is mounted on a fixed base. The three-axis robotic arm includes an upper arm, a lower arm, and a wrist that are hinged together in sequence. The wrist is connected to a retaining cover via a quick-release connector; An adjusting screw is rotatably fitted inside the fixed cover along its axial direction. The top of the adjusting screw is connected to the output shaft of the servo motor via a coupling. An adjusting block is threaded onto the adjusting screw and slides against the inner wall of the fixed cover. The sidewall of the broken block is fixedly connected with a support plate; A crushing cone is mounted on the bottom side of the receiving plate via a bearing, and the surface of the crushing cone is coated with tungsten carbide. A stepper motor is installed at the top of the receiving plate, and the output shaft of the stepper motor passes through the receiving plate and is coaxially connected to the crushing cone; The bottom of the crushing cone is shaped like a frustum cone, and its sidewalls are provided with annular reverse helical blades along the axial direction. The pitch of the reverse helical blades gradually increases along the axial direction, and the groove depth decreases from top to bottom.

2. The dolomite crushing feed inlet anti-blocking device as described in claim 1, characterized in that, The three-axis robotic arm is a multi-degree-of-freedom articulated robotic arm. A rotary drive motor is installed between the upper arm and the rotating base, and a pitch drive cylinder is installed between the wrist and the lower arm. The rotation angle of the fixed cover is driven by the pitch drive cylinder, so that the axis of the crushing cone always forms a 5° to 15° inclination angle with the material discharge direction of the discharge port.

3. The dolomite crushing feed inlet anti-blocking device as described in claim 1, characterized in that, The inner wall of the fixed cover is provided with a guide ridge along the axial direction, and the outer side of the adjusting block is provided with a guide groove that slides with the guide ridge.

4. The dolomite crusher feed inlet anti-blocking device as described in claim 3, characterized in that, The quick-release connector includes a snap-fit ​​flange and a hydraulic locking ring. The retaining cover is detachably connected to the wrist via the snap-fit ​​flange, and the hydraulic locking ring is axially locked to the retaining cover via an annular sealing groove.

5. The dolomite crushing feed inlet anti-blocking device as described in claim 4, characterized in that, The side wall of the fixed cover is fixed with an L-shaped angle steel bracket. The suspended end of the angle steel bracket is equipped with an arc-shaped dust suppression water pipe. The axis of the dust suppression water pipe is parallel to the rotation tangent of the crushing cone, and multiple fan-shaped spray nozzles are evenly arranged on the pipe wall.

6. The dolomite crusher feed inlet anti-blocking device as described in claim 5, characterized in that, The inlet of the dust suppression water pipe is connected to an external high-pressure water source hose via a quick-release clamp, and the outlet is equipped with a check valve.

7. The dolomite crushing feed inlet anti-blocking device as described in claim 5, characterized in that, The bottom of the fixed cover has a circular through groove coaxial with the crushing cone. The edge of the through groove is provided with a wear-resistant ceramic liner, and the diameter of the through groove is larger than the bottom diameter of the crushing cone.

8. The dolomite crushing feed inlet anti-blocking device as described in claim 2, characterized in that, The pressure sensor is electrically connected to the pitch drive cylinder and the stepper motor.

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