Phosphorite cone crusher and crushing method

Abstract

The invention discloses a phosphorite cone crusher and a crushing method, and relates to the technical field of crushers, the phosphorite cone crusher comprises a rack, a fixed cone is arranged in the rack, a movable cone is arranged in the fixed cone in a swinging manner, the movable cone comprises a main shaft and a cone body arranged on the side wall of the main shaft, and a crushing cavity is formed between the cone body and the fixed cone; and a cleaning tank is arranged at the top of the rack, a discharging opening is formed in the cleaning tank, an opening and closing mechanism is arranged at the discharging opening, and cleaned ore is discharged from the discharging opening and falls into the crushing cavity. The cleaning tank is arranged at the top of the cone crusher to clean the ore, so that silt carried by the ore can be removed. Compared with the prior art, the cleaning tank is additionally arranged at the feeding end of the cone crusher, so that the mud removal function on ores is realized, and the phenomenon of mud pasting is not easy to occur in the use process of the cone crusher.

Description

Technical Field

[0001] The present invention relates to the technical field of crushers, and in particular, to a phosphate rock cone crusher and a crushing method. Background Art

[0002] A cone crusher is a kind of crushing machinery suitable for raw materials in the metallurgy, construction, road construction, chemical and silicate industries. According to different crushing principles and different particle sizes of products, it is divided into many models. Crushers are widely used in many departments such as mines, smelting, building materials, highways, railways, water conservancy and chemical industries. Cone crushers have a large crushing ratio, high efficiency, low energy consumption, and uniform product particle size, and are suitable for medium crushing and fine crushing of various ores. For example, in the processing and production of phosphate rock, it is necessary to use a cone crusher to crush phosphate rock.

[0003] Currently, a Chinese patent with the publication number CN205216929U discloses a cone crusher, which includes a frame. A fixed cone is arranged inside the frame. A moving cone is supported in the space inside the fixed cone through a spherical bearing, and the bottom of the main shaft of the moving cone is connected to an eccentric bushing. The eccentric bushing rotates under the drive of a transmission mechanism powered by an electric motor, thereby driving the moving cone to perform a swinging motion. At this time, the distance between the moving cone and the fixed cone will periodically increase and decrease to achieve the crushing of materials. However, in the crushing operation of phosphate rock, due to factors such as the quality of phosphate rock and the primary crushing process, the ore entering the cone crusher may carry sediment, and the sediment is likely to adhere to the crushing cavity, resulting in abnormal discharge and even possible shutdown. The above cone crusher does not have a mud removal function for phosphate rock at the feeding end, resulting in frequent occurrence of mud sticking in the cone crusher. Summary of the Invention

[0004] The first object of the present invention is to overcome the deficiencies of the prior art and provide a phosphate rock cone crusher and a crushing method.

[0005] The first object of the present invention is achieved by the following technical solutions: A phosphate ore cone crusher comprises a frame, a fixed cone is arranged in the frame, a movable cone is swingably arranged inside the fixed cone, the movable cone comprises a main shaft and a cone arranged on the side wall of the main shaft, a crushing chamber is formed between the cone and the fixed cone, a cleaning trough is arranged on the top of the frame, a discharge port is arranged on the cleaning trough, an opening and closing mechanism is arranged at the discharge port, the cleaned ore is discharged from the discharge port and falls into the crushing chamber; the cleaning trough is adapted to separate the cleaning liquid from the ore by tilting, and the cleaned ore is discharged from the discharge port at the end of the high side of the cleaning trough; the cleaning trough comprises a cleaning disc arranged on the top of the movable cone, a plurality of the discharge ports are circumferentially arranged on the side wall of the cleaning disc, with the swing of the movable cone, the cleaning disc swings synchronously and drives the cleaning liquid inside it to swing relatively, and the opening and closing mechanism is adapted to open only the discharge port at the end of the high side of the cleaning disc in a single action.

[0006] Preferably, a hot air device is also provided on the top of the frame, and the hot air device is located below the cleaning tank.

[0007] Preferably, a conical guide ring is engaged at the top of the cleaning plate, and the diameter of the conical guide ring gradually decreases from top to bottom.

[0008] Preferably, the opening and closing mechanism includes a plurality of opening and closing parts distributed along the circumferential direction, and the plurality of opening and closing parts correspond one-to-one to the plurality of discharge ports.

[0009] Preferably, the opening and closing mechanism includes a blocking plate slidably adapted on the side wall of the cleaning tray, the blocking plate can slide to be opposite to the discharge port and block the discharge port; a liquid outlet channel is arranged inside the dish body of the cleaning tray, a liquid outlet hole connected to the liquid outlet channel is opened on the inner wall of the cleaning tray, an opening and closing shaft is elastically arranged in the liquid outlet channel, and in the natural state of the opening and closing shaft, the opening and closing shaft seals and snaps into the liquid outlet hole, and the opening and closing shaft is adapted to be able to bounce under the action of water pressure, thereby connecting the liquid outlet hole with the liquid outlet channel; the outer surface of the cleaning tray A connecting hole connected to the liquid outlet channel is opened on the wall, and a locking hole is correspondingly arranged on the sealing plate. When the opening and closing shaft bounces, the end of the opening and closing shaft away from the liquid outlet hole passes through the connecting hole and extends into the locking hole; the opening and closing mechanism also includes an ejection ring which can be ejected at the top of the main shaft, and a plurality of connecting rods are arranged on the ejection ring, and the plurality of connecting rods correspond to the plurality of sealing plates one by one. A return spring is connected to the sealing plate, and the connecting rod is connected to the sealing plate by a snap mechanism, and the snap on the connecting rod can be elastically arranged in the lateral direction.

[0010] Preferably, the plugging plate extends towards the ejecting ring side to form a bent portion, the bent portion is located below the cleaning tray, and a plurality of air bags are arranged on the bottom surface of the cleaning tray. The plurality of air bags correspond to the plurality of plugging plates one by one. The air bags are located above the bent portion, and the air outlet end of the air bag communicates upwards with the inner cavity of the cleaning tray.

[0011] The second object of the present invention is to overcome the deficiencies of the prior art and provide a method for cone crushing of phosphate rock.

[0012] The second object of the present invention is achieved by the following technical solutions: A method for cone crushing of phosphate rock, including the above-mentioned phosphate rock cone crusher, comprising the following steps: S1. Put the ore to be crushed into the cleaning tank; S2. Introduce a cleaning liquid into the cleaning tank, and keep the opening and closing mechanism in a closed state for the discharge port during this period; S3. Control the opening and closing mechanism to open the discharge port, so that the washed ore is discharged from the discharge port and falls into the crushing cavity to complete crushing.

[0013] The beneficial effects of the present invention are: 1. By arranging a cleaning tank at the top of the cone crusher to clean the ore, the sediment carried by the ore can be removed. Compared with the prior art, the present invention adds a cleaning tank at the feeding end of the cone crusher, realizing the function of removing mud from the ore, and the cone crusher is not prone to the phenomenon of mud sticking during use.

[0014] 2. By using a hot air device to blow-dry the ore after cleaning, the moisture content of the ore entering the crushing cavity is reduced, further preventing the generation of the mud sticking phenomenon.

[0015] 3. The cleaning tank is an inclined cleaning frame. Under the action of gravity, the ore entering the cleaning frame will abut against the partition screen, and the cleaning liquid will pass through the partition screen, thereby realizing the cleaning of the ore and the automatic separation of the ore and the cleaning liquid.

[0016] 4. The cleaning tank is a cleaning tray arranged at the top of the moving cone. During the process of the moving cone swinging to crush the ore in the crushing cavity, the cleaning tray will swing driven by the moving cone. At this time, the cleaning liquid in the cleaning tray will also swing under the action of inertia and centrifugal force, thereby achieving a better cleaning effect on the ore inside. In addition, since the cleaning liquid is swinging, some of the ore in the cleaning tray will be exposed from the cleaning liquid, that is, the ore and the cleaning liquid will be automatically separated. At this time, control the corresponding discharge port to open, and the ore will be discharged smoothly without leakage of the cleaning liquid. Description of the Drawings

[0017] Figure 1 The figure shows a schematic structural diagram of the cleaning tank as a cleaning frame; Figure 2 The figure shows a schematic structural diagram of the cleaning tank as a cleaning tray (the liquid level state of the cleaning liquid is shown in the inner cavity of the cleaning tray in the form of thick solid lines); Figure 3 is Figure 2 an enlarged view of part A of

[0018] Reference numerals: 1, frame; 2, fixed cone; 3, moving cone; 4, main shaft; 5, cone; 6, crushing chamber; 7, cleaning tank; 8, discharge port; 9, opening and closing mechanism; 10, cleaning frame; 11, partition screen; 12, cleaning tray; 13, conical guiding ring; 15, blocking plate; 16, liquid outlet channel; 17, liquid outlet hole; 18, opening and closing shaft; 19, connecting hole; 20, locking hole; 21, ejecting ring; 22, connecting rod; 23, return spring; 24, buckle mechanism; 25, bent part; 26, airbag; 27, elastic seal; 28, water pipe. Detailed implementation manners

[0019] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present invention. Embodiment

[0020] Figures 1 to 3 As shown, a phosphate rock cone crusher includes a frame 1 that is basically cylindrical. A fixed cone 2 is provided on the inner wall of the frame 1, and a moving cone 3 is supported in the fixed cone 2 through a spherical bearing. Similarly to the prior art, the moving cone 3 includes a main shaft 4 and a cone 5 provided on the side wall of the main shaft 4. The cone 5 faces the fixed cone 2, and a crushing chamber 6 is formed between the two. Among them, the bottom of the main shaft 4 is also adaptively connected to an eccentric bushing, and the eccentric bushing is driven to rotate by a transmission mechanism attached to the frame 1, and then the whole moving cone 3 can be driven to swing. It can be imagined that at this time, the distance between the moving cone 3 and the fixed cone 2 will periodically increase and decrease to achieve the crushing of the material.

[0021] At the top feed inlet of the frame 1, a cleaning tank 7 is also provided to receive the ore to be crushed. For example, a water pipe 28 can also be provided at the top of the frame 1, and the water for cleaning can flow into the cleaning tank 7 from top to bottom and contact the ore inside. Under the washing of the water flow, the sediment wrapped on the ore will be cleaned. A discharge port 8 is correspondingly provided on the cleaning tank 7, and the ore that has been cleaned can be discharged through the discharge port 8, so that the ore can fall into the crushing chamber 6 to complete crushing. In order to achieve the controllability of this discharging, an opening and closing mechanism 9 is also provided at the discharge port 8. Especially during the cleaning process of the ore, the opening and closing mechanism 9 will close the discharge port 8 to prevent water from leaking downward into the crushing chamber 6.

[0022] For example, a hot air device (not shown in the figure) can also be provided below the cleaning tank 7. The hot air device can blow hot air on the ore discharged from the discharge port 8 to achieve a drying effect, so as to control the moisture content of the ore entering the crushing chamber 6.

[0023] In some embodiments, the cleaning tank 7 includes an inclined cleaning frame 10. The cleaning frame 10 can be installed in a manner of being fixedly connected to the frame 1, or a jacking member such as a cylinder can be provided at the end of the cleaning frame 10, and the inclination angle of the cleaning frame 10 can be adjusted by changing the jacking stroke of the jacking member. No matter which method is used, the ore and cleaning liquid entering the cleaning frame 10 will move from high to low under the action of gravity. A separating screen 11 is also provided inside the cleaning frame 10. In this way, the ore will be blocked by the separating screen 11, and the cleaning liquid will pass through the separating screen 11, thus realizing the automatic separation of the ore and the separating screen 11.

[0024] The following will schematically elaborate on the operation mode of this disclosure: The first type: Put the ore into the cleaning frame 10, then turn on the water pipe 28, and the water for cleaning will fall into the cleaning frame 10 to complete the cleaning of this part of the ore; then, control the opening and closing mechanism 9 to open the discharge port 8, and the cleaned ore will be discharged downward from the discharge port 8; control the opening and closing mechanism 9 to close the discharge port 8 again, put in a new batch of ore, and repeat the above process to realize the continuous feeding of the ore after cleaning by the cylindrical crusher.

[0025] The second type: It is also possible to continuously put ore into the cleaning frame 10, and realize the cleaning of the ore by periodically supplying the cleaning liquid and periodically opening the discharge port 8.

[0026] Reference Figure 1, the discharge port 8 is preferably opened on the bottom surface of the end of the cleaning frame 10 at the lower side, and in particular is adapted to be arranged adjacent to the separation screen 11. This example is particularly applicable to the second ore cleaning mode described above because the opening position of the discharge port 8 ensures that the discharged ore is cleaned, and the ore in the cleaning frame 10 will not be completely discharged at the same time, and the released ore provides the space required for continuous feeding in the cleaning frame 10.

[0027] A pipe can also be connected to the tail end of the cleaning frame 10 (i.e., the end at the lower position side), and the sewage can be discharged from the cleaning frame 10 through the pipe.

[0028] Such as Figure 2 , Figure 3 As shown, as another solution, the cleaning tank 7 can include a cleaning disk 12 provided at the top of the moving cone 3. A plurality of discharge ports 8 are circumferentially arranged on the side wall of the cleaning disk 12, and as the moving cone 3 swings, the cleaning disk 12 will swing synchronously. It can be imagined that during the swinging process of the cleaning disk 12, since the cleaning liquid is lighter in mass, the cleaning liquid will also swing relatively, while the ore in the cleaning disk 12 remains relatively stationary or moves slightly. Thus, the cleaning liquid and the ore have a similar mutually stirring motion state, and further the cleaning liquid can have a better cleaning effect on the ore.

[0029] Moreover, as the cleaning disk 12 swings, different discharge ports 8 will be in a state of alternating up and down movement. For example, Figure 2 As shown in, when the moving cone 3 swings to the left direction in the figure to crush the ore on that side, the left side of the cleaning disk 12 will be lifted synchronously, and the discharge port 8 on the left side will be at the highest position relative to the other discharge ports 8, and the cleaning liquid in the cleaning disk 12 will be misaligned with the discharge port 8 on the left side, or it can be understood that: the discharge port 8 on the left side will emerge from the water surface. At this time, the opening and closing mechanism 9 can be controlled to open the discharge port 8 on the left side, and the ore after cleaning will be discharged from this discharge port 8, and the moisture is not likely to leak.

[0030] For example, the opening and closing mechanism 9 can include a plurality of opening and closing members (not shown in the figure) distributed circumferentially, and the plurality of opening and closing members correspond to and are adapted to the plurality of discharge ports 8 one by one. In a possible example, the opening and closing member can be an electric control valve, such as a butterfly valve, a gate valve, etc. At this time, a height sensor or an inclination angle sensor can also be adapted on the opening and closing member, and the monitoring by the sensor is used to determine whether the corresponding discharge port 8 is at the highest position, so as to realize the opening and closing action of the discharge port 8 with electric control automation.

[0031] In a preferred example, the opening and closing mechanism 9 may include a blocking plate 15 slidably adapted on the side wall of the cleaning tray 12. It can be imagined that if the blocking plate 15 is slid to be opposite to the discharge port 8, the blocking plate 15 can block the discharge port 8, thereby preventing the leakage of the material in the cleaning tray 12. The cleaning tray 12 is also provided with a liquid outlet channel 16 inside the tray body. Here, the term "inside the tray body" refers to the liquid outlet channel 16 in the form of a "sandwich" inside the tray body, rather than the cavity part formed in the tray body for accommodating the material.

[0032] More specifically, an opening and closing shaft 18 is provided in the liquid outlet channel 16 by springing. In the natural state of the spring, the spring exerts elastic force on the opening and closing shaft 18, thereby driving the opening and closing shaft 18 to seal and snap into the liquid outlet hole 17 provided on the inner wall of the cleaning tray 12. As the water flows continuously into the cleaning tray 12, the opening and closing shaft 18 will spring under the action of water pressure and open the corresponding liquid outlet hole 17, and the cleaning liquid can flow into the liquid outlet channel 16 through the liquid outlet hole 17. For example, the outlet end of the liquid outlet channel 16 can be connected to a pipeline, and the cleaning liquid can be discharged to the outside of the frame 1 through the pipeline.

[0033] In addition, a connection hole 19 connected to the liquid outlet channel 16 is provided on the outer wall of the cleaning plate 12, and a locking hole 20 is correspondingly provided on the blocking plate 15. From the cross-section, the liquid outlet 17, the opening and closing shaft 18, the connection hole 19 and the locking hole 20 are at the same height position, so that when the opening and closing shaft 18 is bounced, the end of the opening and closing shaft 18 away from the liquid outlet 17 will pass through the connection hole 19 and extend into the locking hole 20. It can be understood that during the process of liquid discharge from the liquid outlet 17, it means that the corresponding discharge port 8 is at a lower position (that is, the discharge port 8 is not exposed from the liquid surface of the cleaning liquid), and by inserting the opening and closing shaft 18 into the locking hole 20, it can be ensured that the corresponding blocking plate 15 is not easy to slide by mistake and the cleaning liquid is not easy to leak.

[0034] In order to realize the sliding control of the blocking plate 15, the opening and closing mechanism 9 may also include an ejection ring 21 that can be ejected from the top of the main shaft 4 of the moving cone 3. For example, the ejection of the ejection ring 21 can be realized by an ejection mechanism such as an electric cylinder or a pneumatic cylinder. A plurality of connecting rods 22 are also arranged on the ejection ring 21, and the plurality of connecting rods 22 correspond to the plurality of blocking plates 15 one by one. The connecting rods 22 are specifically adapted to extend to one side of the blocking plate 15, and the two are also connected by a snap mechanism 24. When the ejection ring 21 is ejected, the blocking plate 15 will slide synchronously with the ejection ring 21 under the drive of the snap mechanism 24. Among them, the snap mechanism 24 can refer to any structure in the prior art in which two components can be separated from each other and re-fastened by snap fastening. What is more special is that the snap on the connecting rod 22 is adapted to be able to bounce in the lateral direction.

[0035] In addition, a return spring 23 is also connected to the plugging plate 15. The operation process of this example is described schematically as follows: S1. Put the ore into the cleaning tray 12. As the moving cone 3 swings, the cleaning tray 12 that swings synchronously with the moving cone 3 will cause the cleaning liquid inside it to swing relative to the ore, and the ore will be cleaned more thoroughly; S2. During this period, different discharge ports 8 on the cleaning tray 12 will be lifted to a higher position, and according to the swinging rhythm, the ejection ring 21 is controlled to eject periodically; S201. The ejection ring 21 ejects on the side away from the cleaning tray 12. Through the cooperation of the buckle mechanism 24 between the connecting rod 22 and the plugging plate 15, the ejection ring 21 has a tendency to pull and slide all the plugging plates 15. Since the liquid discharge hole 17 at the lower position is in the drainage state, the corresponding opening and closing shaft 18 will insert into the locking hole 20 of the corresponding plugging plate 15, so that the corresponding plugging plate 15 cannot be pulled. Finally, only the plugging plate 15 at the higher position will be pulled to open the corresponding discharge port 8, and then the washed ore is discharged into the crushing cavity 6 through the discharge port 8 to complete crushing; S202. The ejection ring 21 ejects again on the side close to the cleaning tray 12. Thus, the pulled plugging plate 15 can slide back to the plugging position of the discharge port 8 under the pulling force of the return spring 23; S3. Repeat S1 - S2 to realize continuous cleaning and feeding of the ore.

[0036] Among them, in S201, due to the inability to pull the plugging plate 15, the buckle on the corresponding connecting rod 22 will bounce, causing the connecting rod 22 to disengage from the plugging plate 15 instead of interfering with the normal ejection of the ejection ring 21; in S202, as the connecting rod 22 and the plugging plate 15 gradually approach, the buckle on the connecting rod 22 will bounce again and realize the re - buckling with the buckle on the plugging plate 15 for waiting to execute step S2 again.

[0037] Although the above two implementation schemes of the cleaning tank 7 both achieve the automatic separation of the cleaning liquid and the ore by tilting the material, in the scheme of the cleaning tray 12, the ore and the cleaning liquid can swing relative to each other to achieve a better cleaning effect than the other scheme. And in the scheme of the cleaning tray 12, the ore is discharged from the discharge port 8 at a higher position, and at this time, the moving cone 3 is just crushing the ore corresponding to this discharge port 8 in the crushing cavity 6, and the discharged ore just supplements the area above, realizing the targeted and uniform distribution of the ore in the crushing cavity 6.

[0038] In a more preferable example of the cleaning tray 12, the blocking plate 15 extends towards the ejecting ring 21 and is configured with a bent portion 25. When viewed from the vertical projection, the bent portion 25 overlaps with the cleaning tray 12. A plurality of air bags 26 are further arranged on the bottom surface of the cleaning tray 12. The plurality of air bags 26 correspond to the plurality of blocking plates 15 one by one, and each air bag 26 is specifically arranged between the corresponding bent portion 25 and the bottom surface of the cleaning tray 12. The air outlet end of the air bag 26 is adapted to communicate upwards with the inner cavity of the cleaning tray 12.

[0039] Thus, in the above S201, the air bag 26 corresponding to the blocking plate 15 that is not pulled will remain in a compressed state; while in the above S202, the pulled-out blocking plate 15 will squeeze the inflated air bag 26 during the reset process, so that the gas is pumped into the inner cavity of the cleaning tray 12. The gas filled in the cleaning liquid can further have an effect similar to stirring, so that the cleaning effect on the ore is improved again. More peculiarly, since the ore is discharged from the corresponding discharge port 8, the ore filled into the cleaning tray 12 at this time will also be preferentially filled into this part of the area, and the gas is precisely filled into the cleaning liquid in this part of the area, so that the ore in this part can obtain the best stirring and cleaning effect.

[0040] For example, a conical guiding ring 13 plate with a gradually decreasing diameter from top to bottom is joined to the top of the cleaning tray 12, and an elastic sealing member 27 such as a rubber ring or a corrugated pipe can preferably be connected between the conical guiding ring 13 plate and the inner wall of the frame 1. The conical guiding ring 13 plate can guide the ore put into the frame 1 towards the cleaning tray 12, and it is not easy for the unwashed ore to directly fall into the crushing cavity 6. Embodiment

[0041] A method for conical crushing of phosphate ore includes the conical crusher of Embodiment 1 and further includes the following steps: S1. Put the ore to be crushed into the cleaning tank 7; S2. Pass the cleaning liquid into the cleaning tank 7, and keep the opening and closing mechanism 9 in a closed state for the discharge port 8 during this period; S3. Control the opening and closing mechanism 9 to open the discharge port 8, so that the washed ore is discharged from the discharge port 8 and falls into the crushing cavity 6 to complete the crushing.

[0042] The above is only the preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in related fields. And the changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention.

Claims

1. A phosphate ore cone crusher, comprising a frame (1), a fixed cone (2) being arranged in the frame (1), a movable cone (3) being swingably arranged inside the fixed cone (2), the movable cone (3) comprising a main shaft (4) and a cone (5) arranged on the side wall of the main shaft (4), a crushing chamber (6) being formed between the cone (5) and the fixed cone (2), wherein: A cleaning trough (7) is provided on the top of the frame (1), a discharge port (8) is provided on the cleaning trough (7), an opening and closing mechanism (9) is provided at the discharge port (8), and the cleaned ore is discharged from the discharge port (8) and falls into the crushing chamber (6); The cleaning tank (7) is adapted to separate the cleaning liquid from the ore by tilting, and the cleaned ore is discharged from the discharge port (8) located at the end of the high side of the cleaning tank (7); The cleaning tank (7) comprises a cleaning disc (12) arranged on the top of the moving cone (3), and a plurality of discharge ports (8) are arranged on the side wall of the cleaning disc (12) along the circumferential direction. As the moving cone (3) swings, the cleaning disc (12) swings synchronously and drives the cleaning liquid inside it to swing relatively. The opening and closing mechanism (9) is adapted to open only the discharge port (8) located at the end of the high side of the cleaning disc (12) in a single action.

2. The phosphate rock cone crusher according to claim 1, characterized in that: A hot air device is also provided on the top of the frame (1), and the hot air device is located below the cleaning tank (7).

3. The phosphate rock cone crusher according to claim 1, characterized in that: The top of the cleaning disc (12) is connected with a conical guide ring (13), and the diameter of the conical guide ring (13) gradually decreases from top to bottom.

4. The phosphate rock cone crusher according to claim 1, characterized in that: The opening and closing mechanism (9) comprises a plurality of opening and closing parts distributed along the circumferential direction, and the plurality of opening and closing parts correspond one to one with the plurality of discharge ports (8).

5. The phosphate rock cone crusher according to claim 1, characterized in that: The opening and closing mechanism (9) comprises a blocking plate (15) slidably adapted on the side wall of the cleaning tray (12), wherein the blocking plate (15) can slide to face the discharge port (8) and block the discharge port (8); The cleaning disk (12) is provided with a liquid outlet channel (16) inside the disk body, and a liquid outlet hole (17) connected to the liquid outlet channel (16) is provided on the inner wall of the cleaning disk (12). An opening and closing shaft (18) is elastically provided in the liquid outlet channel (16). When the opening and closing shaft (18) is in a natural state, the opening and closing shaft (18) is sealed and inserted into the liquid outlet hole (17), and the opening and closing shaft (18) is adapted to be able to elastically move under the action of water pressure, thereby connecting the liquid outlet hole (17) with the liquid outlet channel (16); A connecting hole (19) connected to the liquid outlet channel (16) is provided on the outer wall of the cleaning disk (12), and a locking hole (20) is correspondingly provided on the blocking plate (15). When the opening and closing shaft (18) is resilient, the end of the opening and closing shaft (18) away from the liquid outlet hole (17) passes through the connecting hole (19) and extends into the locking hole (20); The opening and closing mechanism (9) further comprises an ejection ring (21) which can be ejected and arranged at the top of the main shaft (4); a plurality of connecting rods (22) are arranged on the ejection ring (21); the plurality of connecting rods (22) correspond to the plurality of blocking plates (15) one by one; a return spring (23) is connected to the blocking plate (15); the connecting rod (22) and the blocking plate (15) are connected via a buckle mechanism (24); and the buckle on the connecting rod (22) can be elastically arranged in the lateral direction.

6. The phosphate rock cone crusher according to claim 5, characterized in that: The blocking plate (15) is extended toward one side of the ejection ring (21) to form a bent portion (25), the bent portion (25) being located below the cleaning disk (12), and a plurality of air bags (26) are provided on the bottom surface of the cleaning disk (12), the plurality of air bags (26) corresponding to the plurality of blocking plates (15) in a one-to-one manner, the air bags (26) being located above the bent portion (25), and the air outlet end of the air bag (26) being upwardly connected to the inner cavity of the cleaning disk (12).

7. A phosphate rock cone crushing method, comprising the phosphate rock cone crusher according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, putting the ore to be crushed into the cleaning tank (7); S2, introducing cleaning liquid into the cleaning tank (7), during which the opening and closing mechanism (9) is kept closed to the discharge port (8); S3, controlling the opening and closing mechanism (9) to open the discharge port (8), so that the cleaned ore is discharged from the discharge port (8) and falls into the crushing chamber (6) to be crushed.

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