Potassium fertilizer production raw material grinding device

Abstract

The present application relates to the technical field of powder production, and particularly relates to a potassium fertilizer production raw material crushing device, which comprises a crusher body, the crusher body is composed of a lower shell, an upper shell, a crushing module and a driving module, a discharge hole is formed in the sidewall of the lower shell, the potassium fertilizer production raw material crushing device further comprises a screening unit, and the screening unit is arranged in the lower shell. The screening unit is used for screening the crushed raw material in real time through a conical screen, so that the raw material particles meeting the size are directly discharged, the large-particle raw material is guided along the screen to the discharge opening, different particle sizes of the raw material are effectively separated, the uniformity of the crushed raw material particles is ensured, a stable raw material basis is provided for subsequent potassium fertilizer production, subsequent process fluctuations caused by uneven particles are reduced, and the discharge opening can also discharge the particles meeting the size but not passing through the conical screen, thereby avoiding waste of the crushed raw material.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of powder production, in particular to a potassium fertilizer production raw material crushing device. BACKGROUND

[0002] In the potassium fertilizer production process, the raw materials such as potassium salt need to be crushed to uniform particle size through three steps of coarse crushing, medium crushing and fine crushing, so as to ensure the reaction efficiency and product purity of subsequent processes such as dissolution, ion exchange and crystallization. Therefore, the uniformity, continuity and economy of raw material crushing are the key prerequisites for potassium fertilizer production.

[0003] At present, the single-cylinder hydraulic cone crusher is mainly used as a medium crushing device for potassium fertilizer raw materials in the industry. This type of equipment can meet the crushing needs of hard raw materials such as potassium salt due to its large crushing force and high processing capacity. However, there are still many technical limitations in actual application, which makes it difficult to adapt to the refinement requirements of potassium fertilizer production. The existing single-cylinder hydraulic cone crusher only has a crushing function, and the crushed raw materials are directly mixed and discharged, resulting in a large number of oversized particles in the finished product. Moreover, the particle size of the crushed raw materials cannot be monitored in real time, and manual sampling and detection are required. Manual detection has a certain lag, and the size of the discharge port cannot be adjusted in real time when the crushing gap increases due to the wear of the moving cone and the fixed cone. This easily leads to the direct discharge of some large particle raw materials, reducing the uniformity of the crushed raw materials. In addition, in order to ensure the crushing effect of the raw materials, the moving cone and the fixed cone are usually replaced after a certain period of use. This replacement is performed even when the moving cone and the fixed cone are not completely worn or have only slight wear, thereby increasing the cost of raw material crushing.

[0004] Therefore, there is an urgent need to provide a raw material crushing device that can ensure the uniformity of crushed and discharged materials and reduce the crushing cost. SUMMARY

[0005] Therefore, it is necessary to provide a potassium fertilizer production raw material crushing device to solve the problems of low uniformity and high cost of existing raw material crushing.

[0006] In order to achieve the above-mentioned purpose, the following technical scheme is adopted: a potassium fertilizer production raw material crushing device, comprising a crusher body, the crusher body is composed of a lower shell, an upper shell, a crushing module and a driving module.

[0007] A discharge hole is formed in the side wall of the lower shell.

[0008] The potassium fertilizer production raw material crushing device further comprises a screening unit, which is arranged in the lower shell. The screening unit comprises a conical screen arranged in the lower shell, a connecting portion connected to the upper end of the conical screen, a guide ring arranged on the outer side of the bottom of the conical screen, and a discharge port formed between the guide ring and the bottom of the conical screen.

[0009] The guide ring is provided with a fracture, the guide ring is trumpet-shaped with a large upper part and a small lower part, and the fracture of the guide ring is located at the discharge hole.

[0010] The potassium fertilizer raw material crushing device further comprises a pushing unit, which is arranged on the driving module and below the conical screen.

[0011] The potassium fertilizer raw material crushing device further comprises a detection unit, which is arranged on the lower shell.

[0012] The small particles crushed by the crusher body pass through the conical screen, and the large particles fall into the discharging opening; the rotating part drives the pushing rod to push the large particles in the discharging opening to the fracture of the guide ring for discharge; the visual detection part detects the number and size of the large particles, and feeds back and adjusts the crushing effect of the crushing module in real time.

[0013] Preferably, the screening unit further comprises a guide protrusion arranged on the bottom of the conical screen near the side of the discharge hole, an installation plate fixedly connected with the conical screen is arranged above the guide protrusion, a plurality of push plates are uniformly distributed in the circumferential direction and are arranged on the inner ring surface of the lower end of the conical screen, an extrusion protrusion in the shape of a fan-shaped column is arranged on the lower end of the push plate.

[0014] Preferably, the pushing unit further comprises a knocking part for knocking the push plate.

[0015] Preferably, the detection unit further comprises a blocking arc plate arranged above the guide protrusion and fixedly connected with the inner ring surface of the lower shell, the blocking arc plate is inclined towards the installation plate, and the end of the blocking arc plate is attached to the installation plate.

[0016] Preferably, the connecting part comprises a rubber sleeve arranged on the upper end of the conical screen, a rotating ring is arranged on the upper end of the rubber sleeve, and a plurality of supporting springs are connected between the lower end of the rotating ring and the upper end of the conical screen.

[0017] Preferably, the rotating part comprises a positioning ring sleeve detachably arranged on the driving module, and a driven gear is rotatably connected to the outer ring surface of the positioning ring sleeve.

[0018] Preferably, the telescopic part comprises a support rod arranged on the outer ring surface of the driven gear, a sliding sleeve is slidably arranged on the end of the support rod away from the driven gear, and a connecting spring is arranged between the sliding sleeve and the support rod.

[0019] Preferably, the knocking part comprises a knocking rod sliding through the support rod, a limiting frame fixedly connected with the lower end of the support rod is arranged below the knocking rod, the limiting frame is in U-shaped structure with the opening facing upward, a return spring is installed between the middle section of the limiting frame and the lower end of the knocking rod, and an arc surface is arranged on the upper end of the knocking rod.

[0020] Preferably, the visual detection part comprises a blocking frame arranged above the discharging hole and fixedly connected with the outer ring surface of the lower shell, and an industrial camera is installed on the blocking frame.

[0021] Preferably, both ends of the break of the guide ring are bent away from the axis of the guide ring, and the bent section of the guide ring is located in the discharging hole.

[0022] Preferably, a gap for sliding sleeve rotation is arranged between the guide frame and the discharging hole.

[0023] In summary, the present application has the following beneficial technical effects: 1. The screening unit adopted by the present application can realize real-time screening of the crushed raw materials through the conical screen, so that the raw material particles meeting the size can be directly discharged, the large-particle raw materials can be concentrated along the screen to the discharging hole, the raw materials of different particle sizes can be effectively separated, the uniformity of the crushed raw material particles can be ensured, a stable raw material basis can be provided for subsequent potash fertilizer production, the subsequent process fluctuations caused by uneven particles can be reduced, and the particles meeting the size but not passing through the conical screen can also be discharged through the discharging hole, so that the phenomenon that the raw materials cannot be discharged due to the blockage of the conical screen can be avoided, and the waste of raw materials after crushing can be avoided.

[0024] 2. The pushing unit cooperated with the detection unit can replace the manual real-time monitoring of the amount of raw materials not meeting the size after crushing, and can control the crushing effect of the crusher body in real time according to the monitored structure, so as to avoid the waste of replacing parts due to slight wear and tear, prolong the service life of the core components, and ensure the sustainability and stability of the raw material crushing of the crusher body while ensuring the crushing effect of the raw materials. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0026] Figure 1 The three-dimensional structure schematic diagram of the present application is shown.

[0027] Figure 2 The front view of the present application is shown.

[0028] Figure 3 The left view of the present application is shown.

[0029] Figure 4 A sectional view of A-A is shown. Figure 3 A sectional view of A-A is shown.

[0030] Figure 5 An enlarged view of the B area is shown. Figure 4 An enlarged view of the B area is shown.

[0031] Figure 6 A first perspective view of the internal structure of the present application is shown, with the upper shell and the crushing module removed.

[0032] Figure 7 A second perspective view of the internal structure of the present application is shown, with the upper shell and the crushing module removed.

[0033] Figure 8 A structural schematic view of the screening unit and the pushing unit of the present application is shown.

[0034] Figure 9 A structural schematic view of the pushing unit of the present application is shown.

[0035] In the above drawings, the following reference signs are used: 1, crusher body; 10, lower shell; 100, discharge hole; 11, upper shell; 12, crushing module; 13, driving module; 2, screening unit; 20, connecting part; 200, rotating ring; 201, rubber sleeve; 202, supporting spring; 21, conical screen; 22, guide ring; 23, material drop opening; 24, guide protrusion; 25, mounting plate; 26, pushing plate; 3, pushing unit; 30, rotating part; 300, positioning ring sleeve; 301, driven gear; 31, telescopic part; 310, supporting rod; 311, sliding sleeve; 312, connecting spring; 32, pushing rod; 33, knocking part; 330, knocking rod; 331, limiting frame; 332, return spring; 4, detection unit; 40, material guide frame; 41, visual detection part; 410, blocking frame; 411, industrial camera; 42, material blocking arc plate. DETAILED DESCRIPTION

[0036] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0037] Reference is made to Figures 1-4The utility model provides a kind of potassium fertilizer production raw material pulverizer, including pulverizer body 1, the pulverizer body 1 is by lower shell 10, upper shell 11, pulverizing module 12 and drive module 13, the lower shell 10 is fixedly connected with the upper shell 11 by multiple bolts, drive module 13 is installed in lower shell 10, pulverizing module 12 is connected with drive module 13 and upper shell 11, upper shell 11 is provided with feed inlet.

[0038] Specific work, pulverizer body 1 is existing single-cylinder hydraulic cone crusher, pulverizing module 12 is by the crushing cavity in single-cylinder hydraulic cone crusher, fixed cone, moving cone, moving cone main shaft and discharge port composition;Drive module 13 is by the pulley in single-cylinder hydraulic cone crusher, transmission shaft, transmission gear, eccentric sleeve, main hydraulic cylinder and stroke sensor composition, before work, pulverizer body 1 is fixedly connected with existing fixed in working position base, again pulley is connected with existing main motor (three-phase asynchronous motor) by belt, main motor is connected with existing power supply, main hydraulic cylinder is connected with existing hydraulic control system.

[0039] Raw material pulverizing work, start main motor, main motor is driven eccentric sleeve rotation by pulley, transmission shaft, eccentric sleeve drives moving cone to do eccentric motion by moving cone main shaft, moving cone is extruded raw material with fixed cone cooperation.

[0040] Referring to Figure 4 , Figure 6 , Figure 7 And Figure 8 , the potassium fertilizer production raw material pulverizer further includes screening unit 2 arranged in lower shell 10, the screening unit 2 includes conical screen 21 arranged in lower shell 10, the conical screen 21 is connected with the pulverizing module 12 and drive module 13 simultaneously, the drive module 13 is positioned to the conical screen 21, the conical screen 21 upper end is connected with connecting portion 20, the connecting portion 20 includes rubber sleeve 201 installed on the upper end of the conical screen 21, the rubber sleeve 201 upper end is installed with rotating ring 200, a plurality of support springs 202 are connected between the lower end of rotating ring 200 and the upper end of conical screen 21.

[0041] Referring to Figure 5 And Figure 8 , the conical screen 21 bottom outside is provided with guide ring 22, the guide ring 22 is fixedly connected with the inner ring surface of lower shell 10, and the guide ring 22 and the bottom of the conical screen 21 form a drop port 23.

[0042] In specific work, the rotating ring 200 is rotatably connected to the lower end of the dynamic cone in the crushing module 12 before work, and the conical screen 21 is sleeved on the outer periphery of the eccentric sleeve of the driving module 13 and fixedly connected with the shaft sleeve of the transmission shaft. In work, the coarsely crushed potash salt raw materials are fed to the upper part of the crusher body 1 by the feeding hopper or the conveying belt, and then enter the crushing module 12 through the feeding port. The potash salt raw materials are crushed by the crushing module 12. The crushed raw materials fall through the discharge port of the crushing module 12 and fall on the conical screen 21. The conical screen 21 screens and guides the crushed raw materials, so that the raw material particles meeting the size requirements pass through the conical screen 21 and are discharged. The raw materials with larger particles fall along the guide of the conical screen 21 to the space between the guide ring 22 and the bottom of the conical screen 21 to form the discharge port 23. The discharge port 23 can also discharge the particles that meet the size requirements but fail to pass through the conical screen 21, avoiding the phenomenon that the conical screen 21 is blocked and cannot discharge materials, ensuring the normal discharge of the crushed raw materials and not affecting the discharge of the raw materials. The guide ring 22 and the conical screen 21 support the raw materials with larger particles to avoid mixing with the normally discharged particles, ensuring the uniformity of the crushed and discharged raw materials and facilitating the subsequent processing steps. The rubber sleeve 201 blocks the discharged particles to prevent the particles with larger size from directly passing through the conical screen 21. The rubber sleeve 201, the rotating ring 200 and the plurality of supporting springs 202 cooperate to adaptively adjust with the eccentric movement of the dynamic cone, ensuring that the rubber sleeve 201 always blocks the space between the dynamic cone and the middle part of the upper end of the conical screen 21. The length of the rubber sleeve 201 and the supporting spring 202 can be adjusted to provide conditions for the height adjustment of the dynamic cone.

[0043] Referring to Figure 4 , Figure 7 and Figure 9 , the potash fertilizer raw material crushing device further comprises a pushing unit 3 arranged on the driving module 13 below the conical screen 21. The pushing unit 3 comprises a rotating part 30 arranged on the driving module 13. The rotating part 30 comprises a positioning ring sleeve 300 detachably arranged on the driving module 13. The outer ring surface of the positioning ring sleeve 300 is rotatably connected with a driven gear 301.

[0044] In specific work, the positioning ring sleeve 300 is sleeved on the eccentric sleeve shell of the driving module 13 before work and is fixedly connected by existing bolts. The shell is in a stationary state when the eccentric sleeve moves. After the positioning ring sleeve 300 is installed, the driven gear 301 rotatably connected with the positioning ring sleeve 300 is engaged with the transmission gear at the end of the transmission shaft of the driving module 13. In work, the transmission shaft drives the driven gear 301 to continuously rotate on the positioning ring sleeve 300 through the transmission gear.

[0045] Referring to Figure 4 , Figure 5 , Figure 7 andFigure 9 The rotating part 30 is connected with an extension part 31, which comprises a support rod 310 installed on the outer ring surface of the driven gear 301, and a sliding sleeve 311 is arranged on the end of the support rod 310 away from the driven gear 301, and a connecting spring 312 is arranged between the sliding sleeve 311 and the support rod 310, and the pushing rod 32 is connected with the upper end of the sliding sleeve 311.

[0046] In specific work, the rotating driven gear 301 drives the pushing rod 32 on the sliding sleeve 311 to continuously rotate in the blanking opening 23, which is used to push the particles with large size on the upper end of the blanking opening 23.

[0047] Referring to Figure 1 The lower shell 10 is provided with a discharging hole 100 on the side wall.

[0048] Referring to Figure 1 , Figure 4 , Figure 6 , Figure 7 and Figure 8 The screening unit 2 further comprises a guide protrusion 24 installed on the bottom of the conical screen 21 near one side of the discharging hole 100, an installation plate 25 fixedly connected with the conical screen 21 is arranged above the guide protrusion 24, a plurality of pushing plates 26 uniformly distributed in the circumferential direction are installed on the inner ring surface of the lower end of the conical screen 21, and an extrusion protrusion is installed on the lower end of the pushing plate 26, the extrusion protrusion is in a fan-shaped columnar structure, and the interface is a quarter circle.

[0049] Referring to Figure 1 , Figure 4 , Figure 6 , Figure 7 and Figure 8 The guide ring 22 is provided with a fracture, the guide ring 22 is in a horn shape with the upper part being large and the lower part being small, the fracture of the guide ring 22 is located at the discharging hole 100, both ends of the fracture of the guide ring 22 are bent away from the axis of the guide ring 22, and the bent segment of the guide ring 22 is located in the discharging hole 100.

[0050] Specifically, the installation plate 25 is used for guiding the material falling from the feeding opening 23 to the two sides, so as to avoid the small-sized material falling from the gap of the guide ring 22 and to avoid the loss of the material meeting the size, the gap of the bent ends of the guide ring 22 is greater than the size of the large particles, the continuously circumferentially moving pushing rod 32 pushes the large particles of the material falling from the feeding opening 23 to the direction of the discharging hole 100, the guide protrusion 24 guides the moving large particles of the material to enter the gap of the guide ring 22 and to fall off, when the pushing rod 32 moves to the guide protrusion 24, the guide protrusion 24 guides the pushing rod 32 to move away from the conical screen 21, in the process, the pushing rod 32 drives the sliding sleeve 311 to slide on the supporting rod 310 and to stretch the connecting spring 312, when the pushing rod 32 is separated from the guide protrusion 24, the connecting spring 312 in the stretched state resets and drives the sliding sleeve 311 and the pushing rod 32 to reset, so as to ensure that the pushing rod 32 can realize the complete circumferential movement, that is, the large particles of the material falling from the feeding opening 23 can be completely pushed into the gap of the guide ring 22 and to fall off.

[0051] Referring to Figures 4-8 , the pushing unit 3 further comprises a knocking part 33 for knocking the pushing plate 26, the knocking part 33 comprises a knocking rod 330 slidingly penetrating the supporting rod 310, a limiting frame 331 fixedly connected with the lower end of the supporting rod 310 is arranged below the knocking rod 330, the limiting frame 331 is in a U-shaped structure with the opening facing upward, a reset spring 332 is arranged between the middle segment of the limiting frame 331 and the lower end of the knocking rod 330, and an arc surface is arranged on the upper end of the knocking rod 330.

[0052] Specifically, the driving gear 301 rotates and drives the knocking rod 330 to rotate through the supporting rod 310, the rotating knocking rod 330 is in contact with the extruding protrusion at the lower end of the pushing plate 26 through the arc surface, the extruding protrusion extrudes the knocking rod 330 downward and compresses the reset spring 332, when the knocking rod 330 is separated from the extruding protrusion, the reset spring 332 in the compressed state resets and drives the knocking rod 330 to rise, so as to realize the function of knocking the pushing plate 26, and further to vibrate the conical screen 21, the continuously rotating knocking rod 330 continuously cooperates with the plurality of pushing plates 26, so as to realize the function of intermittently and continuously vibrating the conical screen 21, and effectively avoid the phenomenon of the conical screen 21 being blocked.

[0053] Referring to Figure 1 , Figure 3 , Figure 6 and Figure 7The potassium fertilizer production raw material crushing device also has a detection unit 4 arranged on the lower shell 10, the detection unit 4 includes a guide frame 40 arranged in the discharge hole 100, a gap for sliding sleeve 311 rotation is arranged between the guide frame 40 and the blanking hole 23, a visual detection part 41 is arranged above the guide frame 40, the visual detection part 41 includes a blocking frame 410 fixedly connected with the outer ring surface of the lower shell 10 and arranged above the discharge hole 100, an industrial camera 411 is arranged on the blocking frame 410, and the visual detection part 41 is fixedly connected with the outer ring surface of the lower shell 10.

[0054] Referring to Figure 1 、 Figure 6 and Figure 7 , the detection unit 4 also includes a material blocking arc plate 42 located above the guide protrusion 24 and fixedly connected with the inner ring surface of the lower shell 10, the material blocking arc plate 42 is inclined to the mounting plate 25 and the end of the material blocking arc plate 42 is attached to the mounting plate 25.

[0055] In specific work, a guide frame is arranged on the outer ring surface of the lower shell 10 at the discharge hole 100, the large particle raw materials falling from the break of the guide ring 22 fall into the guide frame 40, a rubber buffer pad can be laid in the guide frame 40 to avoid the dispersion of the large particle raw materials after contacting the guide frame 40, thereby avoiding the subsequent detection error, the large particle raw materials in the guide frame 40 roll through the discharge hole 100 by their own gravity and move to the direction of the guide frame, the industrial camera 411 continuously monitors the size and quantity of the moving large particle raw materials instead of manual work in this process, if the size and quantity of the large particle raw materials in a short period of time are less than the rated value, the crusher body 1 normally crushes the raw materials, if a large amount of large particle raw materials with inconsistent sizes appear in a short period of time, the industrial camera 411 transmits the detection result to the control center, the control center drives the dynamic cone to move upward by a telecommunication signal to trigger the stroke sensor (the stroke sensor is arranged between the main hydraulic cylinder and the dynamic cone and is used to detect the displacement of the dynamic cone in real time) to change the crushing gap between the outer peripheral surface of the dynamic cone and the inner peripheral surface of the fixed cone (i.e. the size of the discharge hole), so that the crushed raw materials meet the size requirements again, the step of adjusting the crushing gap between the dynamic cone and the fixed cone is repeated whenever a large amount of large particle raw materials with inconsistent sizes appear in a short period of time, until the size of the discharge hole is adjusted to the minimum mechanical limit allowed by the equipment, the operation can effectively avoid replacing the equipment after the dynamic cone and the fixed cone are slightly worn, prolong the service life of the equipment, and only replace the dynamic cone and the fixed cone when the size of the discharge hole cannot be continuously adjusted, so as to ensure the crushing quality of the raw materials while reducing the crushing cost.

[0056] In the description of the embodiments of the present application, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified and limited, the term "provided", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] In the description of the present application, it should also be noted that, unless otherwise specified and limited, the terms "provided", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] The embodiments of the present specific embodiment are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, so that any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A raw material crushing device for potash fertilizer production, comprising a crusher body, wherein the crusher body is composed of a lower shell, an upper shell, a crushing module, and a drive module, characterized in that: A discharge hole is provided on the side wall of the lower housing; A screening unit is disposed inside the lower housing. The screening unit includes a conical screen disposed inside the lower housing. A connecting part is connected to the upper end of the conical screen. A guide ring is disposed on the outer side of the bottom of the conical screen. The guide ring is fixedly connected to the inner ring surface of the lower housing. A material discharge port is formed between the guide ring and the bottom of the conical screen. The guide ring is provided with a break, and the break of the guide ring is located at the discharge hole; A feeding unit is mounted on the drive module and located below the conical screen. The feeding unit includes a rotating part mounted on the drive module, a telescopic part connected to the rotating part, and a feeding rod connected to the upper end of the telescopic part. A detection unit is installed on the lower housing. The detection unit includes a guide frame installed in the discharge hole and a vision inspection unit is provided above the guide frame. Small particles crushed by the crusher body pass through the conical screen, while large particles fall to the discharge port. The rotating part drives the pusher rod through the telescopic part to push the large particles in the discharge port to the guide ring break and discharge them. The vision inspection part detects the number and size of large particles, provides real-time feedback, and adjusts the crushing effect of the crushing module. The screening unit also includes a guide protrusion installed on the bottom of the conical screen near the discharge hole. A mounting plate fixedly connected to the conical screen is provided above the guide protrusion. Multiple circumferentially evenly distributed pushing plates are installed on the inner ring surface of the lower end of the conical screen. Extrusion protrusions are installed at the lower end of the pushing plates. The telescopic part includes a support rod installed on the outer ring surface of the driven gear, and a sliding sleeve is slidably sleeved on the end of the support rod away from the driven gear. A connecting spring is installed between the sliding sleeve and the support rod. The mounting plate is used to guide the incoming raw materials to both sides. The bends at both ends of the guide ring break are larger than the size of the larger particles. The continuously moving push rod pushes the larger particles of raw materials on the inlet toward the outlet. The guide protrusion guides the moving large particles of raw materials, causing them to enter the guide ring break and fall off. When the push rod moves to the guide protrusion, the guide protrusion guides the push rod, causing it to move away from the conical screen. During this process, the push rod drives the sliding sleeve to slide on the support rod and stretches the connecting spring. When the push rod separates from the guide protrusion, the stretched connecting spring returns to its original position and drives the sliding sleeve and push rod to return to their original positions. The push rod completes a full circular motion, pushing all the larger particles of raw materials on the inlet into the guide ring break and causing them to fall off.

2. The potash fertilizer production raw material crushing device according to claim 1, characterized in that: The feeding unit also includes a striking part for striking the extrusion plate.

3. The potash fertilizer production raw material crushing device according to claim 1, characterized in that: The detection unit also includes a baffle plate located above the guide protrusion and fixedly connected to the inner annular surface of the lower housing. The baffle plate is inclined toward the mounting plate and its end is in contact with the mounting plate.

4. The potash fertilizer production raw material crushing device according to claim 1, characterized in that: The connecting part includes a rubber sleeve installed on the upper end of the conical screen, a rotating ring installed on the upper end of the rubber sleeve, and multiple support springs connected between the lower end of the rotating ring and the upper end of the conical screen.

5. A potash fertilizer production raw material crushing device according to claim 2, characterized in that: The rotating part includes a positioning ring sleeve that is detachably mounted on the drive module, and a driven gear is rotatably connected to the outer ring surface of the positioning ring sleeve.

6. The potash fertilizer production raw material crushing device according to claim 5, characterized in that: The striking part includes a striking rod that slides through the support rod. A limiting frame is provided below the striking rod and is fixedly connected to the lower end of the support rod. The limiting frame has an upward-facing U-shaped structure. A return spring is installed between the middle section of the limiting frame and the lower end of the striking rod. The upper end of the striking rod is provided with an arc surface.

7. The potash fertilizer production raw material crushing device according to claim 1, characterized in that: The vision inspection unit includes a baffle frame disposed above the discharge hole and fixedly connected to the outer ring surface of the lower housing, and an industrial camera is mounted on the baffle frame.

8. A potash fertilizer production raw material crushing device according to claim 1, characterized in that: Both ends of the guide ring break are bent away from the axis of the guide ring, and the bent section of the guide ring is located inside the discharge hole.

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