Graphite electrode raw material storage silo

Abstract

This utility model discloses a storage bin for graphite electrode raw materials, including an inverted conical bin. A discharge pipe is fixedly installed at the bottom of the inverted conical bin, and a support frame is fixedly installed at the bottom of the discharge pipe. A PLC controller is fixedly installed on the upper end of the support frame, located on one side of the discharge pipe. A stirring structure is provided inside the inverted conical bin. The stirring structure includes a stirring motor fixedly installed on the outside of the inverted conical bin. A synchronous pulley is fixedly connected to the output end of the stirring motor. A stirring rod is rotatably installed inside the inverted conical bin. Three sets of stirring frames are provided on the outside of the stirring rod, and scrapers are fixedly installed on the outer walls of each stirring frame. Spiral conveying blades are provided at the bottom of the stirring rod. A positioning frame is fixedly installed on the outer wall of the stirring motor, with one end of the positioning frame fixedly installed on the outer wall of the inverted conical bin. Two synchronous pulleys are provided. The beneficial effects of this utility model are that it effectively solves the problem of segregation of particulate raw materials and ensures thorough stirring and dispersion to prevent agglomeration.

Description

Technical Field

[0001] This utility model relates to the technical field of graphite electrode production equipment, and in particular to a material storage silo for graphite electrode raw materials. Background Technology

[0002] Graphite electrodes are high-temperature conductive materials made primarily from petroleum coke and needle coke, with coal tar pitch as a binder, through multiple processes including calcination, batching, mixing, molding, roasting, graphitization, and machining. They possess excellent conductivity, high-temperature resistance, thermal shock resistance, and mechanical strength. In electric arc furnace steelmaking, graphite electrodes can generate heat through their high-temperature electric arc, converting electrical energy into thermal energy to melt and smelt the furnace charge. In the electrolysis industry, they can serve as the anode in electrolytic cells, participating in the electrolytic reaction. Simultaneously, they play important roles in conductivity and heating in high-temperature metallurgy and chemical industries, making them indispensable key materials in industrial production.

[0003] In the production process of graphite electrodes, the storage of raw materials is a crucial step. Currently, common graphite electrode raw material storage silos have several problems. When storing granular raw materials such as calcined coke and needle coke, uneven particle size distribution and accumulation within the silo easily lead to clumping, causing pipe blockages during material transport and affecting the discharge of graphite electrode raw materials. Furthermore, significant differences in particle size affect the stability of subsequent product quality. Therefore, a new graphite electrode raw material storage silo has been proposed to address these issues. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] Therefore, the purpose of this utility model is to provide a storage bin for graphite electrode raw materials, which can solve the existing problems of uneven particle size distribution of raw materials and accumulation in the bin, which easily leads to clumping between particles, resulting in easy blockage when the graphite electrode raw materials are discharged.

[0006] To solve the above-mentioned technical problems, this utility model provides a material storage bin for graphite electrode raw materials, adopting the following technical solution: it includes an inverted conical bin, a discharge pipe is fixedly installed at the bottom of the inverted conical bin and a support frame is fixedly installed at the bottom of the discharge pipe, a PLC controller is fixedly installed at the upper end of the support frame on one side of the discharge pipe, a stirring structure is provided inside the inverted conical bin, the stirring structure includes a stirring motor fixedly installed on the outside of the inverted conical bin, a synchronous pulley is fixedly connected to the output end of the stirring motor, a stirring rod is rotatably installed inside the inverted conical bin, three sets of stirring frames are provided on the outside of the stirring rod and scrapers are fixedly installed on the outer wall of each stirring frame, and a spiral conveying blade is provided at the bottom of the stirring rod.

[0007] Optionally, a positioning frame is fixedly installed on the outer wall of the stirring motor, and one end of the positioning frame is fixedly installed on the outer wall of the inverted conical chamber. There are two synchronous pulleys in total, and the outer walls of the two synchronous pulleys are meshed with synchronous belts.

[0008] Optionally, a positioning column is fixedly installed inside one of the synchronous pulleys, one end of which is fixedly connected to the stirring rod. Four mounting sleeves are fixedly installed on the outer wall of the stirring rod, and the four mounting sleeves are fixedly connected to one end of the stirring frame. Multiple brackets are fixedly installed inside the three sets of stirring frames.

[0009] Optionally, the scraper is attached to and rotates on the inner wall of the inverted conical chamber, a positioning rod is fixedly connected to the bottom of the stirring rod, and a spiral conveying blade is fixedly installed on the outer wall of the positioning rod. The spiral conveying blade is adapted to the size of the discharge pipe.

[0010] Optionally, a feed inlet is fixedly provided at the upper end of the inverted conical hopper, and an ultrasonic level gauge is fixedly provided at the upper end of the inverted conical hopper on one side of the feed inlet.

[0011] Optionally, a positioning collar is fixedly installed on the outer wall of the inverted conical hopper, and an RF admittance level gauge is fixedly installed on the outer wall of the positioning collar. One end of the RF admittance level gauge is connected to the inside of the inverted conical hopper, and the ultrasonic level gauge and the RF admittance level gauge are electrically connected to the PLC controller.

[0012] In summary, this utility model has at least one of the following beneficial effects: 1. By setting up a stirring structure, the outer stirring motor drives the synchronous wheel to rotate, and the synchronous wheel drives another synchronous wheel to rotate using a synchronous belt. This causes the synchronous wheel to drive the stirring rod on the positioning column to rotate stably inside the inverted conical chamber. This causes the stirring rod to simultaneously drive the stirring frames on multiple mounting sleeves to start rotating along the inner wall of the chamber, stirring and dispersing the falling raw materials. At the same time, when the stirring frames rotate and stir, they also drive the scraper to stir the inner wall of the inverted conical chamber, scraping off the particles attached to the inner wall of the chamber, improving the cleaning effect. The raw materials enter the bottom of the inverted conical chamber under the action of gravity and are conveyed out along the guide of the spiral conveying blades. This effectively solves the problem of segregation of particulate raw materials and ensures that the materials are fully stirred and dispersed to prevent agglomeration. At the same time, it ensures the quality stability of the raw materials during storage, providing a reliable raw material guarantee for the subsequent production of graphite electrodes.

[0013] Simultaneously, ultrasonic level gauges and radio frequency admittance level gauges are installed in conjunction to monitor the raw material level in the silo in real time and accurately. This provides timely and accurate raw material inventory information for production, making it easier for production managers to rationally arrange production plans, avoid production interruptions due to insufficient raw materials or resource waste due to raw material backlog, and improve the controllability and efficiency of the production process. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the graphite electrode raw material storage bin of this utility model; Figure 2 This is a cross-sectional structural diagram of the graphite electrode raw material storage bin of this utility model; Figure 3 for Figure 2 Internal structure diagram; Figure 4 for Figure 3 Diagram of the split structure.

[0016] The components represented by each number in the attached diagram are listed below: 1. Inverted conical hopper; 2. Support frame; 3. PLC controller; 4. Discharge pipe; 5. Inlet; 6. Mixing structure; 61. Mixing motor; 62. Positioning frame; 63. Synchronous pulley; 64. Synchronous belt; 65. Positioning column; 66. Mixing rod; 661. Mounting sleeve; 67. Mixing frame; 671. Bracket; 68. Scraper; 69. Spiral conveyor blades; 691. Positioning rod; 7. Ultrasonic level gauge; 8. Radio frequency admittance level gauge; 81. Positioning collar. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] The following is in conjunction with the appendix Figure 1 —4. This utility model will be described in further detail.

[0019] Reference Figure 1-4 In this embodiment, in order to solve the problem of uneven particle size distribution and accumulation in the silo of existing raw materials, which easily leads to clumping between particles and thus easy blockage when the graphite electrode raw material is discharged, this utility model discloses a silo for storing graphite electrode raw materials. The device includes an inverted conical chamber 1, a discharge pipe 4 fixedly installed at the bottom of the inverted conical chamber 1, a support frame 2 fixedly installed at the bottom of the discharge pipe 4, a PLC controller 3 fixedly installed at the upper end of the support frame 2 on one side of the discharge pipe 4, a stirring structure 6 installed inside the inverted conical chamber 1, a stirring motor 61 fixedly installed outside the inverted conical chamber 1, a synchronous wheel 63 fixedly connected to the output end of the stirring motor 61, a stirring rod 66 rotatably installed inside the inverted conical chamber 1, three sets of stirring frames 67 are installed outside the stirring rod 66, and scrapers 68 are fixedly installed on the outer wall of each stirring frame 67, and spiral conveying blades 69 are installed at the bottom of the stirring rod 66. Specifically, a positioning frame 62 is fixedly installed on the outer wall of the stirring motor 61, and one end of the positioning frame 62 is fixedly installed on the outer wall of the inverted conical chamber 1. There are two synchronous pulleys 63, and the outer walls of the two synchronous pulleys 63 are meshed with synchronous belts 64.

[0020] The positioning frame 62 facilitates the stable positioning of the stirring motor 61, while the synchronous pulley 63 and synchronous belt 64 facilitate the stable rotation of the stirring rod 66. Specifically: a positioning column 65 is fixedly installed inside one of the synchronous pulleys 63, one end of the positioning column 65 is fixedly connected to the stirring rod 66, four mounting sleeves 661 are fixedly installed on the outer wall of the stirring rod 66, the four mounting sleeves 661 are fixedly connected to one end of the stirring frame 67, and multiple brackets 671 are fixedly installed inside the three sets of stirring frames 67.

[0021] By providing multiple small supports 671 inside the stirring rack 67, it is easy to uniformly stir and mix the poured graphite electrode raw material. At the same time, when the stirring rack 67 rotates, it uniformly fits and rotates with the inner wall of the inverted conical chamber 1, which fully disperses the graphite electrode raw material. Specifically, the scraper 68 is attached to and rotates on the inner wall of the inverted conical chamber 1, the bottom of the stirring rod 66 is fixedly connected to the positioning rod 691, and the outer wall of the positioning rod 691 is fixedly installed with the spiral conveying blade 69, which is adapted to the size of the discharge pipe 4.

[0022] By setting scraper 68 on the outer wall of mixing rack 67, it is easy to scrape off the raw materials attached to inverted cone hopper 1, avoiding the difficulties caused by manual cleaning later. At the same time, spiral conveying blades 69 are set on discharge pipe 4 to facilitate quantitative conveying of raw materials and avoid excessive blockage caused by direct pouring. Specifically, an inlet 5 is fixedly installed at the upper end of the inverted conical hopper 1, and an ultrasonic level gauge 7 is fixedly installed on one side of the inlet 5 at the upper end of the inverted conical hopper 1.

[0023] The ultrasonic level gauge 7 is installed on the top of the inverted conical silo 1 and measures the material level by emitting ultrasonic waves and receiving reflected waves.

[0024] Specifically, a positioning collar 81 is fixedly installed on the outer wall of the inverted conical hopper 1, and an RF admittance level gauge 8 is fixedly installed on the outer wall of the positioning collar 81. One end of the RF admittance level gauge 8 is connected to the inside of the inverted conical hopper 1, and the ultrasonic level gauge 7 and the RF admittance level gauge 8 are electrically connected to the PLC controller 3.

[0025] The radio frequency admittance level gauge 8 is installed on the side wall of the inverted conical silo 1. It determines the material level by detecting the influence of the material on the radio frequency signal. The two level gauges complement each other and can improve the accuracy and reliability of material level monitoring. The ultrasonic level gauge 7 and the radio frequency admittance level gauge 8 transmit the material level data monitored in real time to the control system. The control system issues an early warning signal when the material level is too low, reminding the staff to replenish the raw materials in time, and controls the feeding equipment to stop feeding when the material level is too high, to prevent the silo from overflowing.

[0026] The specific working principle is as follows: When it is necessary to store granular raw materials such as calcined coke and needle coke, the raw materials are poured into the feed inlet 5 according to their type and particle size. After connecting the raw material conveying pipe to the feed inlet 5, the feeding equipment is started, and the raw materials begin to enter the inverted conical hopper 1. At the same time as the raw materials enter the inverted conical hopper 1, the outer stirring motor 61 is started to drive the synchronous wheel 63 to rotate. Simultaneously, the synchronous wheel 63 drives another synchronous wheel 63 to rotate using the synchronous belt 64. This causes the synchronous wheel 63 to drive the stirring rod 66 on the positioning column 65 to rotate stably inside the inverted conical hopper 1. This causes the stirring rod 66 to simultaneously drive the stirring frames 67 on multiple mounting sleeves 661 to start rotating along the inner wall of the hopper, stirring and dispersing the falling raw materials. The actual situation of the raw materials is adjusted by the PLC controller 3 to adjust the speed of the drive motor to achieve the best stirring effect. At the same time, when the stirring rack 67 rotates and stirs, it drives the scraper 68 to stir the inner wall of the inverted cone hopper 1, scraping off the particles attached to the inner wall of the hopper and improving its cleaning effect. The raw materials enter the bottom of the inverted cone hopper 1 under the action of gravity. Guided by the spiral conveying blades 69, the raw materials flow out from the discharge pipe 4 of the inverted cone hopper 1 under the action of gravity and are conveyed to the next process through the conveying equipment. During the discharge process, the stirring rack 67 can continue to rotate at a low speed to further ensure the uniformity of the discharge, which is convenient for the stable conveying of graphite motor raw materials and avoids problems such as excessive and difficult quantitative conveying caused by direct conveying. The ultrasonic level gauge 7 and the radio frequency admittance level gauge 8 work together to monitor the material level in the silo in real time and transmit the data to the PLC control system. The staff can check the material level at any time through the display screen of the PLC controller 3. When the material level is lower than the set lower limit, the control system issues an early warning signal to remind the staff to replenish the material in time. When the material level is higher than the set upper limit, the control system automatically controls the feeding equipment to stop feeding to prevent the silo from overflowing. At the same time, the staff should regularly calibrate and maintain the material level monitoring device to ensure the accuracy and reliability of its monitoring data.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A graphite electrode raw material storage bin comprising an inverted conical bin (1), characterized in that: The bottom of the inverted conical hopper (1) is fixedly equipped with a discharge pipe (4) and a support frame (2) is fixedly installed at the bottom of the discharge pipe (4). A PLC controller (3) is fixedly installed on the upper end of the support frame (2) on one side of the discharge pipe (4). A stirring structure (6) is provided inside the inverted conical hopper (1). The stirring structure (6) includes a stirring motor (61) fixedly installed on the outside of the inverted conical hopper (1). A synchronous wheel (63) is fixedly connected to the output end of the stirring motor (61). A stirring rod (66) is rotatably installed inside the inverted conical hopper (1). Three sets of stirring frames (67) are provided on the outside of the stirring rod (66), and scrapers (68) are fixedly installed on the outer wall of each stirring frame (67). Spiral conveying blades (69) are provided at the bottom of the stirring rod (66).

2. The graphite electrode raw material storage silo according to claim 1, characterized in that: The outer wall of the stirring motor (61) is fixedly provided with a positioning frame (62), and one end of the positioning frame (62) is fixedly installed on the outer wall of the inverted conical chamber (1). There are two synchronous pulleys (63), and the outer walls of the two synchronous pulleys (63) are meshed with synchronous belts (64).

3. The graphite electrode raw material storage silo according to claim 2, characterized in that: One of the synchronous pulleys (63) has a positioning column (65) fixedly installed inside. One end of the positioning column (65) is fixedly connected to the stirring rod (66). Four mounting sleeves (661) are fixedly installed on the outer wall of the stirring rod (66). The four mounting sleeves (661) are fixedly connected to one end of the stirring frame (67). Multiple brackets (671) are fixedly installed inside the three sets of stirring frames (67).

4. The graphite electrode raw material storage silo according to claim 3, characterized in that: The scraper (68) is attached to and rotates on the inner wall of the inverted conical chamber (1). The bottom of the stirring rod (66) is fixedly connected to a positioning rod (691). The outer wall of the positioning rod (691) is fixedly installed with a spiral conveying blade (69). The spiral conveying blade (69) is adapted to the size of the discharge pipe (4).

5. The graphite electrode raw material storage silo according to claim 1, characterized in that: The inverted conical hopper (1) is fixedly provided with a feed inlet (5) at the upper end, and an ultrasonic level gauge (7) is fixedly provided on the side of the feed inlet (5) at the upper end of the inverted conical hopper (1).

6. The graphite electrode raw material storage silo according to claim 5, characterized in that: A positioning collar (81) is fixedly installed on the outer wall of the inverted conical hopper (1), and an RF admittance level gauge (8) is fixedly installed on the outer wall of the positioning collar (81). One end of the RF admittance level gauge (8) is connected to the inside of the inverted conical hopper (1), and the ultrasonic level gauge (7) and the RF admittance level gauge (8) are electrically connected to the PLC controller (3).

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