Crusher feeding equipment with pre-crushing and screening functions

Abstract

The invention relates to crusher feeding equipment with pre-crushing and screening functions, which comprises a belt conveyor and a feeding funnel, and is characterized by further comprising a pre-crushing and screening mechanism, the pre-crushing and screening mechanism mainly comprises a crushing component and a rack, the rack is arranged between the belt conveyor and the feeding funnel, and the crushing component is arranged on the rack. The crushing part is located above the rack and is composed of a plurality of lower crushing rollers and an upper crushing pressing plate assembly, the lower crushing rollers are arranged on the rack at equal intervals and connected with the rack in a rolling mode, and the upper crushing pressing plate assembly comprises an upper fixing plate, two upper hydraulic telescopic rods, a middle connecting plate, four lower stretching hydraulic compression rods and a crushing pressing plate. According to the pre-crushing and screening mechanism, ore is pre-crushed and screened through repeated rubbing and extrusion of the telescopic sliding rod mechanism of the transmission structure and the downward pressure of the crushing pressing plate and the multiple lower crushing rollers.

Description

Technical Field

[0001] The invention belongs to the technical field of ore crushing and conveying, and in particular relates to a crusher ore feeding device with pre-crushing and screening functions. Background Art

[0002] At present, large-scale cone crushers such as H-type are widely used in the production of iron ore beneficiation plants. The ore feeding device mainly adopts the ore gathering ring directly above the crusher. A square ore discharge port is installed inside the ore gathering ring. The ore feeding belt directly throws the ore into the ore discharge port and then collects it on the moving cone ore separation plate and enters the crusher for crushing. There are the following problems: 1. A large amount of fine-grained ore is mixed in the ore feeding, the processing capacity and product qualification rate are low, and the energy consumption is high; 2. The ore feeding in the crushing chamber is uneven, the liner wears too fast locally, the service life is short, and the consumption is increased; 3. The crusher has been operating in segregation for a long time, and the load on one side is too large, causing the thrust bearing of the crusher to be worn and damaged, causing major equipment accidents.

[0003] In the prior art, patent announcement number CN117619486A discloses a belt conveyor device with ore crushing function, a belt conveyor device with ore crushing function, comprising a main body, a plurality of movable jaws are arranged in the main body, a fixed jaw is arranged in the main body, a transmission member is arranged at the bottom of the main body, a discharging member is arranged on one side of the main body, a belt supporting roller is arranged on the discharging member and the main body, a plurality of adjustment structures are arranged between the discharging member and the main body, and a transmission structure is arranged in the movable jaw; The main body comprises a crushing shell, a top cover is provided on the top of the crushing shell, the movable jaw comprises a movable part, a through hole is provided on the top of the movable part, the transmission structure comprises a crankshaft, both ends of the crankshaft are rotatably connected with the crushing shell, the crankshaft passes through the through hole and is rotatably connected with the movable part, the through hole is located in the top cover, a back plate is provided at the rear end of the crushing shell, a motor is provided on the back plate, a transmission wheel is provided at the end of the motor, a rotating wheel 1 and a rotating wheel 2 are provided at both ends of the crankshaft respectively, and the rotating wheel 1 and the transmission wheel are connected by a transmission belt; As an improvement, a movable jaw plate is provided at the end face of the movable part, a guard plate located on the movable part is provided above the movable jaw plate, an adjusting rod is hinged at the bottom of the back end face of the movable part, an adjusting block is fixedly provided at the end of the adjusting rod, a swivel is rotatably connected at the end of the adjusting block, a swivel is fixedly provided at the end of the swivel, a ruler is provided at the end face of the swivel rod, a pull rod hinged to the movable part is provided below the adjusting rod, a limit block is provided at the end of the pull rod, a pull rod spring is sleeved outside the pull rod, and a limit moving block sleeved outside the pull rod is provided at the end of the pull rod spring. However, it is complicated to operate, has high requirements on the working environment, has a high failure rate, and leads to high maintenance costs, and is not suitable for most of the current mining working environments. Summary of the invention

[0004] In order to solve the problems of the prior art, the object of the present invention is to provide a crusher feeding device with pre-crushing and screening functions.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions: A crusher feeding equipment with pre-crushing and screening functions of the present invention comprises a belt conveyor and a feeding hopper, and is characterized in that it also comprises a pre-crushing and screening mechanism, wherein the pre-crushing and screening mechanism is mainly composed of a crushing component and a frame, wherein the frame is arranged between the belt conveyor and the feeding hopper, one end of the frame is connected with the discharging end of the belt conveyor, and the other end is connected with the feeding hopper, the crushing component is located above the frame, and is composed of a plurality of lower crushing rollers and an upper crushing plate assembly which are equidistantly arranged on the frame and rollingly connected with the frame, the upper crushing plate assembly comprises an upper fixed plate, two upper hydraulic telescopic rods, an intermediate connecting plate, four lower extending hydraulic compression rods and a crushing plate, the upper fixed plate is fixed on the upper top plate, and the upper fixed plate is connected to the upper fixed plate. Two hinge supports A are provided at the lower part, a pair of hinge supports B are on the upper surface of the middle connecting plate, a pair of hinge supports C are installed on the lower surface of the middle connecting plate, and hinge supports D are respectively provided at the four corners of the upper surface of the crushing plate. The upper ends of the two upper hydraulic telescopic rods are respectively hinged on the two hinge supports A of the upper fixed plate, and the output ends of the two upper hydraulic telescopic rods are hinged on the hinge support B on the upper surface of the middle connecting plate. The upper ends of the four lower hydraulic compression rods are respectively hinged on the hinge support C on the lower surface of the middle connecting plate, and the telescopic ends are hinged to the hinge support C to form a telescopic slide rod mechanism of the transmission structure. The pre-crushing and screening mechanism pre-crushes and screens the ore 6 by repeatedly kneading and squeezing the telescopic slide rod mechanism of the transmission structure and the downward pressure of the crushing plate with multiple lower crushing rollers.

[0006] Preferably, the lower crushing roller is a lower crushing roller with spiral grooves on the roller surface and a plurality of protrusions on the upper surface.

[0007] Preferably, the crushing plate is made of a steel plate coated with manganese steel material.

[0008] Preferably, the upper hydraulic telescopic rod and the lower hydraulic telescopic rod are electro-hydraulic push rods.

[0009] Preferably, it also includes a processor, on which is configured a control system for controlling the operation of the pre-crushing and screening mechanism, and the control system includes a detection unit and an execution unit: The detection unit is a pressure sensor arranged on the four corners of the crushing plate, which is used to detect the pressure value of the crushing plate and generate instructions or signals based on the detection result; The execution unit is used to execute the lifting, lowering and left and right adjustment program based on the electro-hydraulic push rod to control the downward pressure and left and right swing of the pre-crushing and screening mechanism.

[0010] The beneficial effects of the present invention are: The present invention sets a pre-crushing and screening mechanism between the belt conveyor and the ore feeding hopper. The incoming ore of the belt conveyor is pre-screened to remove qualified products before being fed into the crusher. Through repeated kneading and squeezing, the overall structure of the ore will expand the previous cracks. In addition, fatigue damage will gradually occur, and finally the ore fiber will be cracked, completing the pre-crushing process. It effectively solves the problems of uneven particle size of incoming ore and offset of feeding, realizes uniform ore distribution and full ore feeding of the crusher, maximizes the efficiency of large cone crushers, improves the processing capacity and product qualification rate of the unit hour, reduces the cost of crushing operations, reduces equipment accidents caused by ore distribution problems, improves the operating rate, extends the service life of the liner, and improves the crushing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the overall structure of a crusher feeding device with pre-crushing and screening functions according to the present invention; Figure 2 The blue Figure 1 A magnified view of part A; Figure 3 This is a schematic diagram of the structure of the lower crushing roller of the present invention; Figure 4 It is a schematic diagram of the execution unit flow of the present invention. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0013] like Figures 1 to 4As shown, a crusher feeding equipment with pre-crushing and screening functions of the present invention comprises a belt conveyor 1 and a feeding hopper 2, and is characterized in that it also comprises a pre-crushing and screening mechanism, wherein the pre-crushing and screening mechanism is mainly composed of a crushing component and a frame 31, wherein the frame 31 is arranged between the belt conveyor 1 and the feeding hopper 2, one end of which is connected to the discharging end of the belt conveyor 1, and the other end of which is connected to the feeding hopper 2, wherein the crushing component is located above the frame 31, and is composed of a plurality of lower crushing rollers 32 and an upper crushing plate assembly which are equidistantly arranged on the frame 31 and are rollingly connected to the frame 31, wherein the upper crushing plate assembly comprises an upper fixed plate 331, two upper hydraulic telescopic rods 333, an intermediate connecting plate 335, four lower extending hydraulic compression rods 337 and a crushing plate 338, wherein the upper fixed plate 331 is fixed on the upper top plate 4, and the lower portion of the upper fixed plate 331 is provided with a plurality of lower crushing rollers 32 and an upper crushing plate assembly which ... There are two hinged supports A332 on the top, a pair of hinged supports B334 on the upper surface of the middle connecting plate 335, a pair of hinged supports C336 on the lower surface of the middle connecting plate 335, and hinged supports D339 on the four corners of the upper surface of the crushing pressure plate 338. The upper ends of the two upper hydraulic telescopic rods 333 are respectively hinged on the two hinged supports A332 of the upper fixed plate 331, and the output ends of the two upper hydraulic telescopic rods 333 are hinged on the hinged supports B334 on the upper surface of the middle connecting plate. The upper ends of the four downward extending hydraulic compression rods 337 are respectively hinged on the hinged supports C336 on the lower surface of the middle connecting plate, and the telescopic ends are hinged to the hinged supports C336 to form a telescopic slide rod mechanism of the transmission structure. The pre-crushing and screening mechanism pre-crushes and screens the ore 6 through repeated rubbing and squeezing of the telescopic slide rod mechanism of the transmission structure and the downward pressure of the crushing pressure plate and multiple lower crushing rollers 32.

[0014] The lower crushing roller 32 of the present invention is a lower crushing roller with a spiral groove 321 on the roller surface and a plurality of protrusions 322 on the upper surface.

[0015] The crushing plate 338 described in the present invention is made of a steel plate coated with manganese steel material.

[0016] The upper hydraulic telescopic rod 333 and the lower hydraulic telescopic rod 337 described in the present invention are electro-hydraulic push rods.

[0017] The present invention also includes a processor, on which is configured a control system for controlling the operation of the pre-crushing and screening mechanism, the control system including a detection unit and an execution unit: the detection unit is a pressure sensor 5 arranged on the four corners of the crushing plate, for detecting the pressure value of the crushing plate and generating instructions or signals based on the detection result; the execution unit is used to execute a lifting, lowering and left and right adjustment program based on the electro-hydraulic push rod to control the downward pressure and left and right swing of the pre-crushing and screening mechanism.

[0018] When the detected real-time pressure is less than the threshold, a power-on signal is generated, and the entire device is powered on based on the power-on signal to indicate that the entire device is operating normally. When the detected real-time pressure is greater than the threshold, a power-off signal is generated, and the entire device is stopped or lifted based on the power-off signal to indicate that the equipment is abnormal.

[0019] During operation, the driving system drives the crushing roller to rotate, pushing the ore forward to between the lower crushing roller 32 and the crushing plate 338. With the reciprocating and pressing motion of the crushing plate 338 and the uniform rolling of the lower crushing roller 32, the ore rolls between the crushing plate 338 and the upper and lower crushing structures of the lower crushing roller 32. Through repeated kneading, the ore is squeezed and subjected to friction, and the overall structure of the ore will expand the previous cracks, causing the ore fiber to break, so that the ore smaller than the gap between the crushing rollers enters the lower funnel. The lower crushing roller 32 of the present invention is a lower crushing roller with a spiral groove 321 on the roller surface and a plurality of protrusions 322 on the upper surface. In this way, the crushed ore falls into the ore receiving trough 33 below through the spiral groove 321, which plays a role in screening. The ore that has not been crushed enters the front crusher for crushing, completing the pre-crushing and screening process.

Claims

1. A crusher feeding device with pre-crushing and screening functions, comprising a belt conveyor and a feeding hopper, characterized in that: It also includes a pre-crushing and screening mechanism, which is mainly composed of a crushing component and a frame. The frame is arranged between the belt conveyor and the ore feeding funnel, one end of which is connected to the discharging end of the belt conveyor, and the other end is connected to the ore feeding funnel. The crushing component is located above the frame, and is composed of a plurality of lower crushing rollers and an upper crushing plate assembly that are equidistantly arranged on the frame and rollingly connected to the frame. The upper crushing plate assembly includes an upper fixed plate, two upper hydraulic telescopic rods, an intermediate connecting plate, four lower extending hydraulic compression rods and a crushing plate. The upper fixed plate is fixed on the upper top plate, and two hinge supports A are provided at the lower part of the upper fixed plate, and a plurality of lower hydraulic compression rods are provided on the upper surface of the intermediate connecting plate. A pair of hinge supports B, a pair of hinge supports C are installed on the lower surface of the middle connecting plate, hinge supports D are respectively provided on the four corners of the upper surface of the crushing plate, the upper ends of the two upper hydraulic telescopic rods are respectively hinged on the two hinge supports A of the upper fixed plate, the output ends of the two upper hydraulic telescopic rods are hinged on the hinge support B on the upper surface of the middle connecting plate, the upper ends of the four lower hydraulic compression rods are respectively hinged on the hinge support C on the lower surface of the middle connecting plate, the telescopic ends are hinged to the hinge support C to form a telescopic slide rod mechanism of the transmission structure, the pre-crushing and screening mechanism pre-crushes and screens the ore through repeated kneading and squeezing of the telescopic slide rod mechanism of the transmission structure and the downward pressure of the crushing plate and multiple lower crushing rollers.

2. The crusher feeding equipment with pre-crushing and screening function according to claim 1 is characterized in that: The lower crushing roller is a roller surface with spiral grooves and an upper surface with a plurality of protrusions.

3. The crusher feeding equipment with pre-crushing and screening function according to claim 1 is characterized in that: The crushing pressing plate is made of a steel plate coated with manganese steel material.

4. The crusher feeding equipment with pre-crushing and screening function according to claim 1 is characterized in that: The upper hydraulic telescopic rod and the lower hydraulic telescopic rod are electro-hydraulic push rods.

5. The crusher feeding equipment with pre-crushing and screening function according to claim 1 is characterized in that: It also includes a processor, on which is configured a control system for controlling the operation of the pre-crushing and screening mechanism, and the control system includes a detection unit and an execution unit: The detection unit is a pressure sensor arranged on the four corners of the crushing plate, which is used to detect the pressure value of the crushing plate and generate instructions or signals based on the detection result; The execution unit is used to execute a lifting, lowering and left and right adjustment program based on the electro-hydraulic push rod to control the downward pressure and left and right swing of the pre-crushing and screening mechanism.

Images