Anti-punching device of roller press

Abstract

The utility model belongs to the technical field of material conveying, and particularly relates to an anti-punching device of a roller press. An anti-impact device of a roller press comprises the roller press, a feed port of the roller press is connected with a material bin, a discharge port of the roller press is connected with a scattering classifier, a discharge port of the scattering classifier is connected with a ball mill, and an anti-impact assembly is arranged at one end of a hydraulic flashboard of the roller press. When the roller press has instantaneous material punching, the working current of the movable roller motor and the working current of the fixed roller motor synchronously have the no-load condition, the working current of the movable roller motor and the working current of the fixed roller motor are synchronously lower than 28A, the PLC receives a current signal of the current sensor, the PLC outputs a pulse signal to the electromagnetic valve, the first air cylinder is controlled to close the pneumatic gate plate, and the pneumatic gate plate is controlled to close the pneumatic gate plate. The feeding port of the roller press is rapidly closed, a large amount of fine powder in the roller press is effectively prevented from rushing into the circulating bucket elevator motor, and the circulating bucket elevator motor is prevented from being crushed.

Description

Technical Field

[0001] This utility model belongs to the field of material conveying technology. Specifically, this utility model relates to an anti-impact device for a roller press. Background Technology

[0002] In the production of P.II52.5 cement using a cement roller press, the extremely high quality requirements of the mill's products, coupled with high clinker temperatures and rapid material flow rates, necessitate maintaining a low level of circulating air consumption. This causes the fine powder to circulate repeatedly within the roller press system, resulting in severe repeated material spurring. Once spurring occurs, the mill frequently stops or even shuts down. This not only interrupts the production process and reduces efficiency, but also leads to a large accumulation of material, requiring significant manpower and time for cleaning, increasing labor costs. Furthermore, spurring causes severe impacts on equipment such as the circulating bucket elevator motor, reducer, and magnetic coupling, shortening their lifespan and requiring frequent spare parts replacements, significantly increasing equipment maintenance costs. Additionally, manual cleaning of the hot material in the confined pit space poses a significant safety hazard, increasing the risk of burns and heatstroke. Moreover, frequent spurring causing mill stops or shutdowns affects power consumption, further increasing production costs. Therefore, there is an urgent need for a device to address spurring in the roller press.

[0003] Chinese patent (publication number: 215843278U) discloses a leak-proof side baffle for a roller press, including a movable roller and a fixed roller of the roller press arranged opposite to each other; and a dust-blocking assembly disposed on both sides of the movable roller and the fixed roller to block dust, wherein the dust-blocking assembly consists of two sets of original baffles. However, this leak-proof side baffle for a roller press cannot effectively cope with the material impact of the roller press. Utility Model Content

[0004] This utility model is designed to solve the above-mentioned problems and aims to provide a device that can resist material impact from a roller press and protect other equipment. To achieve the above objective, the technical solution adopted by this utility model is as follows: a roller press anti-impact device, including a roller press, a material silo connected to the feed inlet of the roller press, a dispersing and classifying machine connected to the discharge outlet of the roller press, a ball mill connected to the discharge outlet of the dispersing and classifying machine, and an anti-impact component provided at one end of the hydraulic gate of the roller press.

[0005] The anti-impact assembly includes a pneumatic gate and a first cylinder. The first cylinder is connected to the pneumatic gate. A first pipe is provided between the material bin and the feed inlet of the roller press. The pneumatic gate is located inside the first pipe and is connected to an interlock control unit.

[0006] The interlocking control unit includes a current sensor and a PLC controller. The current sensor is installed on the power supply lines of the moving roller motor and the stationary roller motor of the roller press. The PLC controller is connected to the current sensor and the first cylinder.

[0007] The pneumatic gate is coated with tungsten carbide.

[0008] A flow guide plate is installed inside the first pipe.

[0009] The PLC controller is connected to an audible and visual alarm.

[0010] The guide plate is arranged symmetrically in the first pipe.

[0011] The technical effect of this utility model is as follows: When the roller press experiences instantaneous material inrush, the operating current of the moving roller motor and the fixed roller motor will simultaneously become unloaded. The operating current of the moving roller motor and the fixed roller motor will simultaneously be lower than 28A. The PLC controller receives the current signal from the current sensor and outputs a pulse signal to the solenoid valve to control the first cylinder to close the pneumatic gate, quickly closing the roller press feed port. This effectively prevents a large amount of fine powder from the roller press stabilizing bin from rushing into the circulating bucket elevator motor, thus avoiding damage to the circulating bucket elevator motor. Attached Figure Description

[0012] This manual includes the following figures, which illustrate the following:

[0013] Figure 1 This is a schematic diagram of an anti-impact device for a roller press according to this utility model.

[0014] The following are marked in the diagram: 1. Roller press; 2. Material silo; 3. Dispersing and classifying machine; 4. Ball mill; 5. Anti-impact assembly; 501. Pneumatic gate; 502. First cylinder; 6. Interlocking control unit; 601. PLC controller; 7. Guide plate. Detailed Implementation

[0015] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0016] like Figure 1As shown, a roller press anti-impact device includes a roller press 1, a material bin 2 connected to the feed inlet of the roller press 1, a dispersing and classifying machine 3 connected to the discharge outlet of the roller press 1, a ball mill 4 connected to the discharge outlet of the dispersing and classifying machine 3, and an anti-impact component 5 installed at one end of the hydraulic gate of the roller press 1. The roller press 1 performs high-pressure extrusion and crushing of materials to form a cake, which is then conveyed to downstream equipment. The extrusion action of the moving roller and the fixed roller reduces the particle size of the material and improves the grinding efficiency. The material enters the roller press 1 from the feed inlet, is extruded by the roller gap to form a cake, and is discharged to the dispersing and classifying machine 3 from the discharge outlet. The dispersing and classifying machine 3 has built-in high-speed rotating blades that crush the cake. Finally, the coarse material returned from the dispersing and classifying machine 3 is subjected to secondary grinding by the ball mill 4 to ensure that the fineness of the finished product meets the standard. The anti-impact component 5 can effectively prevent a large amount of fine powder in the roller press 1 from rushing into the circulating bucket elevator motor when instantaneous impact occurs in the roller press 1, thus avoiding damage to the circulating bucket elevator motor.

[0017] The anti-impact assembly 5 includes a pneumatic gate 501 and a first cylinder 502. The first cylinder 502 is connected to the pneumatic gate 501. A first pipe 503 is provided between the material bin 2 and the feed inlet of the roller press 1. The pneumatic gate 501 is located inside the first pipe 503 and is connected to an interlock control unit 6. The pneumatic gate 501 is vertically arranged inside the first pipe 503. When the roller press 1 experiences instantaneous impact, the first cylinder 502 provides power to the pneumatic gate 501, thereby quickly closing the feed inlet of the roller press 1 and effectively preventing a large amount of fine powder from the roller press 1 from rushing into the circulating bucket elevator motor, thus avoiding damage to the circulating bucket elevator motor.

[0018] The interlocking control unit 6 includes a current sensor and a PLC controller 601. The current sensor is installed on the power supply lines of the moving roller motor and the fixed roller motor of the roller press 1. The PLC controller 601 is connected to the current sensor and the first cylinder 502. The current sensor can monitor the operating current of the moving and fixed roller motors of the roller press 1 in real time. By setting the no-load current of the moving and fixed roller motors of the roller press 1 to 28A, the PLC controller 601 works in conjunction with the first cylinder 502 and the pneumatic gate 501. When the roller press 1 experiences a momentary material surge, the operating current of the moving and fixed roller motors will simultaneously become no-load, and the operating current of the moving and fixed roller motors will simultaneously drop below 28A. The PLC controller 601 receives the current signal from the current sensor and outputs a pulse signal to the solenoid valve to control the first cylinder 502. The first cylinder 502 closes the pneumatic gate 501, quickly closing the feed inlet of the roller press 1, effectively preventing a large amount of fine powder from the roller press's flow stabilization bin from rushing into the circulating bucket elevator motor and avoiding damage to the circulating bucket elevator motor.

[0019] The pneumatic gate 501 is coated with tungsten carbide. The tungsten carbide coating on the surface of the pneumatic gate 501 gives it high temperature resistance and wear resistance.

[0020] A flow guide plate 7 is installed inside the first pipe 503. The flow guide plate 7 can optimize the material flow inside the first pipe 503 and prevent material segregation and accumulation.

[0021] The PLC controller 601 is connected to an audible and visual alarm. When the roller press 1 experiences a momentary surge of material, the operating current of both the moving and stationary roller motors will simultaneously drop below 28A, triggering an audible and visual alarm to alert the operator and prevent secondary accidents.

[0022] The guide vanes 7 are arranged symmetrically in a circle within the first pipe 503. Four guide vanes 7 are welded to the inner wall of the pipe at 90° intervals to guide the material to flow in the center.

[0023] The role and effect of the embodiments

[0024] When the roller press 1 experiences a momentary surge of material, the operating current of the moving roller motor and the stationary roller motor will simultaneously become unloaded. When the operating current of the moving roller motor and the stationary roller motor is simultaneously lower than 28A, the PLC controller 601 receives the current signal from the current sensor and outputs a pulse signal to the solenoid valve, controlling the first cylinder 502 to close the pneumatic gate 501, quickly closing the feed port of the roller press 1, effectively preventing a large amount of fine powder in the roller press 1 from rushing into the circulating bucket elevator motor and avoiding damage to the circulating bucket elevator motor.

[0025] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A roll press impact preventing material device comprising a roll press (1), characterized in that, The roller press (1) is connected with a material bin (2) at the inlet, connected with a scattering classifier (3) at the outlet, connected with a ball mill (4) at the outlet of the scattering classifier (3), and provided with a material rush prevention assembly (5) at one end of the hydraulic gate of the roller press (1).

2. The roll press bumping prevention material of claim 1, wherein: The material rush prevention assembly (5) comprises a pneumatic gate (501) and a first air cylinder (502), the first air cylinder (502) is connected with the pneumatic gate (501), a first pipeline (503) is arranged between the material bin (2) and the inlet of the roller press (1), the pneumatic gate (501) is arranged in the first pipeline (503), and the pneumatic gate (501) is connected with a interlock control unit (6).

3. The roll press bumping prevention material of claim 2, wherein: The interlock control unit (6) comprises a current sensor and a PLC controller (601), the current sensor is arranged on the power supply circuit of the movable roller motor and the fixed roller motor of the roller press (1), the PLC controller (601) is connected with the current sensor, and the PLC controller (601) is connected with the first air cylinder (502).

4. The roll press bumping prevention material of claim 2, wherein: The pneumatic gate (501) is sprayed with tungsten carbide on the surface.

5. The roll press impactor material preventing device according to claim 2, characterized by: A flow guide plate (7) is arranged between the first pipeline (503) and the material bin (2).

6. The roll press impactor material preventing device according to claim 3, characterized by: The PLC controller (601) is connected with an audible and visual alarm.

7. The roll press impactor material preventing device according to claim 5, characterized by: The flow guide plate (7) is arranged in the first pipeline (503) in a circumferential symmetry.

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