Intelligent anti-blocking device of crusher

Abstract

The invention discloses an intelligent anti-blocking device for a crusher, and belongs to the technical field of crushers, the intelligent anti-blocking device comprises a control system, a cover shell, a main frame, a crusher rotor mechanism and a sieve plate assembly, the crusher rotor mechanism and the sieve plate assembly are located in the main frame, the cover shell is located above the crusher rotor mechanism and movably connected with the main frame, and the cover shell is provided with an anti-blocking assembly; the anti-blocking assembly comprises a discharging turning plate and an electric push rod, the discharging turning plate is located on one side of the discharging direction of the sieve plate assembly, and the electric push rod drives the discharging turning plate to turn downwards; and the control system is electrically connected with a motor of the crusher rotor mechanism and the anti-blocking assembly respectively. The anti-blocking assembly is intelligently started by monitoring the rated protection current of the main motor of the rotor mechanism of the crusher, the electric push rod drives the discharging turning plate to turn over, redundant materials are discharged into the discharging bin below, and tripping and blocking caused by current overload of the main motor of the rotor mechanism of the crusher are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of crushers, and particularly relates to an intelligent anti-blocking device for crushers by monitoring the main motor current of the crushers. Background Art

[0002] During the daily production process of crushers, if the feeding material flow is too large or the crushed material cannot be discharged in time, a large amount of coal material will accumulate in the crusher cavity, causing the crusher to be blocked. When the crusher is blocked, workers need to spend a lot of time cleaning it, which increases the labor intensity of the workers, affects the crushing qualification rate, and also affects the service life of the wearing parts of the crusher.

[0003] In the prior art, the crushing power of the crusher is often increased to crush the excess coal material and discharge it from the gaps of the screen plate. However, increasing the crushing power will obviously increase the energy consumption of the crusher, and at the same time, the large power will cause the coal material to excessively squeeze the screen plate, affecting the service life of the screen plate.

[0004] Therefore, an intelligent anti-blocking device is needed, which can be intelligently adjusted by monitoring the main motor current of the crusher to improve the anti-blocking effect and better meet the crushing particle size qualification rate. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent anti-blocking device for crushers to solve the problems in the background art.

[0006] The purpose of the present invention is achieved by the following technical solutions: An intelligent anti-blocking device for crushers includes a control system, a cover shell, a main frame, and a crusher rotor mechanism and a screen plate assembly located within the main frame. The cover shell is located above the crusher rotor mechanism and is movably connected to the main frame. The cover shell is provided with an anti-blocking component. The screen plate assembly is located below the crusher rotor mechanism. The anti-blocking component includes a discharge flap and an electric push rod. The discharge flap is located on one side of the screen plate assembly in the discharge direction, and the electric push rod drives the discharge flap to flip downward. The control system is electrically connected to the motor of the crusher rotor mechanism and the anti-blocking component respectively, and the control system is used to monitor the main motor current of the crusher rotor mechanism.

[0007] Further, one side of the discharge flap is provided with a connecting shaft. Both ends of the connecting shaft pass through the cover shell. The electric push rod is located outside the cover shell. One end of the electric push rod is hinged to one end of the connecting shaft through a hinge rod, and the other end of the electric push rod is hinged to the cover shell.

[0008] Further, the intelligent opening of the discharge flap is electrically connected to the control system by monitoring the main motor current of the crusher.

[0009] The protection current value for opening the discharge flap is 1.5 - 2 times the rated current of the main motor of the crusher rotor mechanism.

[0010] Furthermore, the intelligent anti-blocking device is connected to the electrical system by monitoring the protection current of the main motor current of the crusher.

[0011] Furthermore, the power source of the discharge flap can be an electric push rod or a hydraulic push rod, and the two can replace each other.

[0012] Furthermore, the discharge flap is provided with sieve holes, and the width of the discharge flap is adapted to the width of the sieve plate assembly.

[0013] Furthermore, the sieve plate assembly includes an arc-shaped sieve plate, an adjustment shaft, and an adjustment mechanism. One side of the arc-shaped sieve plate is connected to the adjustment shaft, and both ends of the adjustment shaft are connected to the inner wall of the main frame. The adjustment mechanism is located on the side of the arc-shaped sieve plate close to the discharge flap.

[0014] Furthermore, the adjustment mechanism includes a pull ear, a connecting rod assembly, and a lead screw adjustment rod. One end of the lead screw adjustment rod extends out of the main frame, and the end of the lead screw adjustment rod extending out of the main frame is hinged to the main frame through a hinge block. The other end of the lead screw adjustment rod is hinged to the arc-shaped sieve plate through the connecting rod assembly and the pull ear.

[0015] Furthermore, the cover is connected to the main frame through a lifting cylinder, and an inspection door is provided at the front side of the cover corresponding to the position of the discharge flap.

[0016] Furthermore, a counterattack plate assembly is provided at one end of the sieve plate assembly away from the discharge flap.

[0017] The beneficial effects of the present invention are as follows: When a large amount of materials enter the crusher cavity instantaneously, the current of the main motor of the crusher will continue to rise within 10 seconds to 3 minutes, resulting in material blockage and shutdown. When the current of the crusher motor reaches the protection current, the discharge flap is started within 3 seconds to 2 minutes, and the crusher cavity presents an open structure, and the materials are quickly discharged from the opened opening; when the current returns to the normal rated current value, the discharge flap is started to the fully enclosed crushing cavity structure to ensure the crushing qualification rate.

[0018] The discharge flap is driven by an electric push rod to flip, so that the materials are discharged into the lower discharge bin, reducing the material accumulation in the crusher rotor mechanism and preventing blockage.

[0019] 3) By controlling the protection current of the motor, the current value of the crusher rotor mechanism or the discharge flap is automatically opened and closed in a timely manner, and the flipping of the discharge flap realizes intelligent start and stop, reducing the labor intensity of manual material cleaning.

[0020] 4) The problem of material blockage in the crusher cavity and the improvement of the qualified rate of broken particle size can be solved by intelligently turning on the anti-blocking device by monitoring the protection current value of the main motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional view of an intelligent anti-blocking device for a crusher according to the present invention; Figure 2 It is a schematic installation view of a sieve plate assembly and an anti-blocking assembly in the present invention; Figure 3 It is a schematic view when the flipping sieve plate is in a horizontal state in the present invention; Figure 4 It is a schematic view when the flipping sieve plate is in a flipped state in the present invention; In the figure, 1 - main frame, 2 - cover shell, 21 - inspection door, 3 - anti-blocking assembly, 31 - discharge flap, 32 - electric push rod, 33 - connecting shaft, 34 - hinge rod, 4 - sieve plate assembly, 41 - arc sieve plate, 42 - lead screw adjusting rod, 43 - pull ear, 44 - connecting rod assembly, 45 - adjusting shaft, 5 - crusher rotor mechanism, 6 - counterattack plate assembly. SPECIFIC EMBODIMENTS

[0022] 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 belong to the scope of protection of the present invention.

[0023] Refer to Figures 1 - 4 , the present invention provides a technical solution: As Figures 1 - 4 shown, an intelligent anti-blocking device for a crusher includes a control system, a cover shell 2, a main frame 1, and a crusher rotor mechanism 5 and a sieve plate assembly 4 located inside the main frame 1. The cover shell 2 is located above the crusher rotor mechanism 5 and is movably connected to the main frame 1. The cover shell 2 is provided with an anti-blocking assembly 3, and the sieve plate assembly 4 is located below the crusher rotor mechanism 5.

[0024] The anti-blocking component 3 includes a discharge flap 31 and an electric push rod 32. The discharge flap 31 is located on one side of the discharge direction of the sieve plate component 4. The electric push rod 32 drives the discharge flap 31 to turn downward. A connecting shaft 33 is provided on one side of the discharge flap 31. Both ends of the connecting shaft 33 pass through the cover shell 2. The electric push rod 32 is located outside the cover shell 2. One end of the electric push rod 32 is hinged to one end of the connecting shaft 33 through a hinge rod 34, and the other end of the electric push rod 32 is hinged to the cover shell 2. The control system is electrically connected to the motor of the crusher rotor mechanism 5 and the anti-blocking component 3 respectively, and the control system is used to monitor the main motor current of the crusher rotor mechanism 5.

[0025] Through the above technical solution, when the feeding amount in the crusher rotor mechanism 5 increases instantaneously or sundries cannot be discharged, at this time, the materials will accumulate on the discharge flap 31, resulting in a sharp increase in the motor current of the crusher rotor mechanism 5. The current is synchronously reflected in the control system, and the output of the crusher rotor mechanism 5 tends to trip.

[0026] At this time, according to the preset current protection value, the protection current value for opening the discharge flap is 1.5 - 2 times the rated current of the main motor power of the crusher rotor mechanism. When the current value of the motor reaches or exceeds this value, the anti-blocking component 3 is started, and the electric push rod 32 drives the discharge flap 31 to turn, so that the accumulated materials are discharged into the lower discharge bin, reducing the material accumulation in the crusher rotor mechanism 5 and preventing blockage.

[0027] Furthermore, when a large amount of materials enter the crusher cavity instantaneously, the motor current increases sharply and the crusher tends to be in a tripping state. At this time, the discharge flap is automatically started through the set protection current value, and the crusher cavity presents an open structure, and the materials are quickly discharged from the opened opening. When the current returns to the normal rated current value, the discharge flap is started to the fully enclosed crushing cavity structure to ensure the crushing qualification rate.

[0028] Through the above technical solution, the intelligent anti-blocking device system judges whether to accurately open the discharge flap 31 by judging the protection current value of the crusher rotor mechanism 5, avoiding blockage.

[0029] Furthermore, the discharge flap 31 is provided with sieve holes, and the width of the discharge flap 31 is adapted to the width of the sieve plate component 4.

[0030] Through the above technical solution, the qualified materials brought onto the discharge flap 31 will fall into the lower discharge bin through the sieve holes on the discharge flap 31, while the materials that are not completely broken will accumulate in the discharge flap 31 and re-enter the crusher rotor mechanism 5 for crushing.

[0031] Further, the sieve plate assembly 4 includes an arc sieve plate 41, an adjustment shaft 45 and an adjustment mechanism. One side of the arc sieve plate 41 is connected to the adjustment shaft 45, and both ends of the adjustment shaft 45 are connected to the inner wall of the main frame 1. The adjustment mechanism is located on the side of the arc sieve plate 41 close to the discharge flap 31. The adjustment mechanism includes a pull ear 43, a connecting rod assembly 44 and a lead screw adjustment rod 42. One end of the lead screw adjustment rod 42 extends out of the main frame 1. The end of the lead screw adjustment rod 42 extending out of the main frame 1 is hinged to the main frame 1 through a hinge block, and the other end of the lead screw adjustment rod 42 is hinged to the arc sieve plate 41 through the connecting rod assembly 44 and the pull ear 43.

[0032] Through the above technical solution, by rotating the lead screw adjustment assembly located outside the main frame 1, the end of the lead screw adjustment assembly extending into the main frame 1 is lengthened or retracted. Then, through the hinged pull ear 43 and the connecting rod assembly 44, the arc sieve plate 41 is driven to rotate around the adjustment shaft 45, thereby adjusting the distance between the arc sieve plate 41 and the crusher rotor mechanism 5, and used to adjust or reduce the crushing chamber space.

[0033] When there is a large amount of material in the crusher rotor mechanism 5 and the sieve plate assembly 4, the crushing chamber space can be increased through the adjustment mechanism to facilitate the material to flow out between the arc sieve plate 41 and the discharge flap 31; when finer materials need to be ground, the crushing chamber space is reduced through the adjustment mechanism, so that the crusher rotor mechanism 5 crushes the materials.

[0034] Further, the cover shell 2 is connected to the main frame 1 through a lifting cylinder, and an inspection door 21 is provided at the front side of the cover shell 2 corresponding to the position of the discharge flap 31.

[0035] Through the above technical solution, the cover shell 2 can be opened through the lifting cylinder, which is convenient for observing and maintaining the anti-blocking assembly 3 inside the cover shell 2. At the same time, the material on the discharge flap 31 can be cleared through the inspection door 21.

[0036] Further, a counterattack plate assembly is provided at one end of the sieve plate assembly 4 away from the discharge flap 31.

[0037] Through the above technical solution, the counterattack plate assembly bears the impact of the material ejected by the hammer head of the crusher rotor mechanism 5, so that it collides and breaks on the counterattack plate assembly, and the broken material is bounced back into the crushing chamber for crushing until it falls from the sieve plate assembly 4. The specific working process of this solution is as follows: Large pieces of material fall from the screening machine into the crusher rotor mechanism 5. The large pieces of material are broken into qualified particle sizes and pass through the sieve plate assembly 4. When sundries enter the equipment, the large pieces of material that cannot be broken are pushed by the coal flow and finally enter the discharge flap 31 through the sieve plate assembly 4.

[0038] At this time, the motor current of the crusher rotor mechanism 5 increases sharply, and the protection current is synchronously reflected on the control system. The output of the crusher rotor mechanism 5 tends to trip (the feed rate increases greatly or debris cannot be discharged). When the protection current value reaches or exceeds the preset value for a certain period of time, the intelligent anti-blocking device opens to form an open structure, and the materials in the crusher cavity are emptied; after the blocked materials are emptied, the current value returns to normal and the intelligent anti-blocking device closes to form a fully sealed crusher cavity structure.

[0039] When the protection current value exceeds the preset value, the intelligent anti-blocking device opens to form an open structure, the motor current continues to decrease, and the crusher rotor mechanism 5 continues to break, dredge and discharge materials, realizing the automatic material cleaning function in the crushing cavity.

[0040] The above are only the preferred embodiments 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 fall within the protection scope of the appended claims of the present invention.

Claims

1. An intelligent anti-blocking device for a crusher, characterized in that: The invention comprises a control system, a cover shell (2), a main frame (1), a crusher rotor mechanism (5) and a screen plate assembly (4) located in the main frame (1), the cover shell (2) being located above the crusher rotor mechanism (5) and being movably connected to the main frame (1), and the cover shell (2) being provided with an anti-blocking assembly (3); The sieve plate assembly (4) is located below the crusher rotor mechanism (5); the anti-blocking assembly (3) comprises a discharge flap (31) and an electric push rod (32); the discharge flap (31) is located on one side of the sieve plate assembly (4) in the discharge direction; and the electric push rod (32) drives the discharge flap (31) to flip downward; The control system is electrically connected to the motor of the crusher rotor mechanism (5) and the anti-blocking component (3) respectively, and the control system is used to monitor the main motor current of the crusher rotor mechanism (5).

2. The intelligent anti-blocking device for crusher according to claim 1 is characterized in that: A connecting shaft (33) is provided on one side of the unloading flap (31), and both ends of the connecting shaft (33) pass through the cover shell (2). The electric push rod (32) is located outside the cover shell (2), and one end of the electric push rod (32) is hinged to one end of the connecting shaft (33) via a hinge rod (34), and the other end of the electric push rod (32) is hinged to the cover shell (2).

3. The intelligent anti-blocking device for crusher according to claim 1 is characterized in that: The discharge flap (31) is provided with sieve holes, and the width of the discharge flap (31) is adapted to the width of the sieve plate assembly (4).

4. The intelligent anti-blocking device for crusher according to claim 1 is characterized in that: The sieve plate assembly (4) comprises an arc-shaped sieve plate (41), an adjustment shaft (45) and an adjustment mechanism, one side of the arc-shaped sieve plate (41) is connected to the adjustment shaft (45), both ends of the adjustment shaft (45) are connected to the inner wall of the main frame (1), and the adjustment mechanism is located on a side of the arc-shaped sieve plate (41) close to the discharge flap (31).

5. The intelligent anti-blocking device for crusher according to claim 4 is characterized in that: The adjustment mechanism comprises a pull ear (43), a connecting rod assembly (44) and a screw adjustment rod (42), one end of the screw adjustment rod (42) extends out of the main frame (1), the end of the screw adjustment rod (42) extending out of the main frame (1) is hinged to the main frame (1) through a hinge block, and the other end of the screw adjustment rod (42) is hinged to the arc-shaped screen plate (41) through the connecting rod assembly (44) and the pull ear (43).

6. The intelligent anti-blocking device for crusher according to claim 1 is characterized in that: The cover shell (2) is connected to the main frame (1) via a lifting cylinder, and an inspection door (21) is provided on the front side of the cover shell (2) at a position corresponding to the unloading flap (31).

7. The intelligent anti-blocking device for a crusher according to claim 1 is characterized in that: An impact plate assembly (6) is provided at one end of the screen plate assembly (4) away from the discharge flap (31).

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