Carbon product forming device

Abstract

The utility model relates to a carbon product forming device, which belongs to the technical field of prebaked anode production for aluminum. A temperature detection mechanism for checking the temperature of the paste in the mold box is installed on the left column, and the temperature detection mechanism includes a mounting support installed on the inner side of the left column and a drive motor installed on the mounting support. The drive motor is vertically arranged, and a horizontal connecting rod is installed on the power output shaft of the drive motor. A temperature sensor for detecting the temperature of the paste in the mold box is installed on the other end of the connecting rod. The utility model has the following beneficial effects: the temperature of the paste in the mold box can be detected, and the lifting and lowering of the die head will not be interfered with in the non-detection state. The application detects the molding flue gas temperature according to the temperature sensor, selects a suitable external pressurization value, avoids internal inflation cracks of the product, and solves the existing problems.

Description

Technical Field

[0001] The utility model relates to a carbon product forming device, belonging to the technical field of pre-baked anode production for aluminum. Background Art

[0002] Prebaked anodes for aluminum are gradually developing towards environmentally friendly, energy-saving and high-quality types, and the aluminum reduction cell has gradually increased from 300KA to the current 600KA. The quality and specifications of aluminum anodes are required to be further improved to adapt to the upgrading and transformation of large-scale new aluminum reduction cells and ensure stable operation. In this way, the key indicator of aluminum anode quality, "volume density", needs to be improved and stabilized at 1.59-1.62g / cubic centimeter. The volume density required by the YS / T285-2022 standard is not less than 1.56g / cubic centimeter; in particular, anodes exported to European and American manufacturers clearly require a volume density of 1.60-1.62g / cubic centimeter.

[0003] For example, the patent application with patent number CN202110735169.1 discloses a high-density carbon anode forming device. In order to meet the requirements of the anode volume density, the forming equipment is based on the original equipment and a pressurizing device is added to increase the green body volume density to above 1.67g / cubic centimeter.

[0004] The current technology is not comprehensive and has the following disadvantages: During the aluminum anode green body forming process, the temperature of the forming mold is 145℃-170℃, and there is a large amount of asphalt fume. The higher the paste temperature, if the forming pressure of the paste is not changed, the greater the elastic aftereffect formed inside the carbon green body, and the carbon product baking process is prone to batch cracking.

[0005] In order to solve one of the above problems, a carbon product forming device is urgently needed. Utility Model Content

[0006] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: how to detect the temperature of the paste in the detection mold box without interfering with the lifting of the die head in the non-detection state, and a carbon product forming device is provided for this purpose.

[0007] The carbon product forming device described in the utility model includes a vibration platform, a door-type frame, a mold box on the vibration platform, and a mold head matched with the mold box. A pressurized cylinder for driving the mold head to rise and fall is installed on the crossbeam of the door-type frame. The crossbeam is erected above the vibration platform, and the two ends of the crossbeam are respectively vertically connected to a left column and a right column. It is characterized in that: a temperature detection mechanism for checking the temperature of the paste in the mold box is installed on the left column, and the temperature detection mechanism includes a mounting support installed on the inner side of the left column and a drive motor installed on the mounting support. The drive motor is vertically arranged, and a horizontal connecting rod is installed on the power output shaft of the drive motor. A temperature sensor for detecting the temperature of the paste in the mold box is installed on the other end of the connecting rod.

[0008] The temperature sensor can be driven by a driving motor to rotate the connecting rod to the top of the paste for temperature measurement. After the temperature measurement is completed, the temperature sensor is driven by a driving motor to rotate the connecting rod to the initial position, so that the temperature of the paste in the mold box can be detected, and it will not interfere with the rise and fall of the die head in the non-detection state. This application detects the molding flue gas temperature based on the temperature sensor, selects the appropriate external pressurization value, solves the relationship between the specific pressure and the temperature, determines the specific pressure value of the molding process, makes its volume density more uniform, and avoids the internal inflation cracks of the product to solve the existing problems.

[0009] Preferably, the cylinder body of the pressurizing oil cylinder is installed on the crossbeam of the door-type frame, and the mold box is installed with a pressurizing buffer spring for connecting with the piston rod of the pressurizing oil cylinder.

[0010] Preferably, the temperature sensor is an infrared thermometer, which is used to detect the temperature of the forming flue gas of the paste.

[0011] Preferably, it also includes a first oil pipe connected to the rodless chamber of the pressurized oil cylinder, a second oil pipe connected to the rod chamber of the pressurized oil cylinder, and a controller. The temperature sensor is electrically connected to the signal input end of the controller. A pressure transmitter and a pressure regulating valve are installed on the first oil pipe. The pressure transmitter is electrically connected to the signal input end of the controller, and the pressure regulating valve is electrically connected to the signal output end of the controller.

[0012] A pressure transmitter is a device that converts pressure into electric signals for control and remote transmission. It can convert physical pressure parameters such as liquid sensed by the pressure measuring element sensor into standard electrical signals and transmit them to the controller. The controller outputs control signals as needed to control the state of the pressure regulating valve and select the appropriate external pressurization value.

[0013] Preferably, the pressurized oil cylinder is driven to lift and lower using an existing hydraulic control system, including a three-position four-way solenoid valve, the first oil pipe and the second oil pipe are respectively connected to the A port and the B port of the same three-position four-way solenoid valve, the P port and the T port of the three-position four-way solenoid valve are respectively connected to the oil supply pump and the oil tank through corresponding oil pipes, and the oil supply pump inlet is connected to the oil tank.

[0014] Preferably, a material pushing mechanism is provided on one side of the vibration platform.

[0015] Preferably, the controller is an existing PLC controller or a single chip microcomputer controller.

[0016] Preferably, the infrared thermometer has a measuring range of 50-200°C and an error value of ±1.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] In the carbon product forming device described in the utility model, the temperature sensor can be driven by the driving motor to rotate the connecting rod to the top of the paste to measure the temperature. After the temperature measurement is completed, the temperature sensor is driven by the driving motor to rotate the connecting rod to the initial position, so that the temperature of the paste in the detection mold box can be detected, and it will not interfere with the lifting and lowering of the die head in the non-detection state.

[0019] The carbon product forming device described in the utility model detects the forming flue gas temperature according to a temperature measuring sensor, selects a suitable external pressurization value, solves the relationship between specific pressure and temperature, determines the specific pressure value of the forming process, makes its volume density more uniform, and avoids internal inflation cracks of the product to solve the existing problems.

[0020] In the carbon product forming device of the utility model, the temperature sensor is an infrared thermometer used to detect the forming smoke temperature of the paste, with a measuring range of 50-200°C and an error value of ±1. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a partial diagram of the utility model;

[0024] In the figure: 1, vibration platform 2, door frame 3, mold box 4, paste 5, die head 6, pressurized buffer spring 7, pressurized oil cylinder 8, mounting support 9, drive motor 10, connecting rod 11, temperature sensor 12, controller 13, pressure regulating valve 14, pressure transmitter. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings: The utility model is further illustrated below through specific embodiments, but is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the invention should be included in the protection scope of the utility model.

[0026] Embodiment 1, as Figure 1-2 As shown, the carbon product forming device comprises a vibration platform 1, a door-shaped frame 2, a mold box 3 on the vibration platform 1, and a die head 5 matched with the mold box 3, a pressurized cylinder 7 for driving the die head 5 to rise and fall is installed on the crossbeam of the door-shaped frame 2, the crossbeam is erected above the vibration platform 1, and the two ends of the crossbeam are respectively vertically connected to a left column and a right column, a temperature detection mechanism for checking the temperature of the paste 4 in the mold box 3 is installed on the left column, the temperature detection mechanism comprises a mounting support 8 installed on the inner side of the left column and a drive motor 9 installed on the mounting support 8, the drive motor 9 is vertically arranged, a horizontal connecting rod 10 is installed on the power output shaft of the drive motor 9, and a temperature sensor 11 for detecting the temperature of the paste 4 in the mold box 3 is installed on the other end of the connecting rod 10.

[0027] The temperature sensor 11 can be driven by the driving motor 9 to drive the connecting rod 10 to rotate to the top of the paste 4 for temperature measurement. After the temperature measurement is completed, the temperature sensor 11 is driven by the driving motor 9 to drive the connecting rod 10 to rotate to the initial position, so that the temperature of the paste 4 in the detection mold box 3 can be detected, and it will not interfere with the lifting and lowering of the die head 5 in the non-detection state.

[0028] Embodiment 2, as Figure 1-2As shown, the carbon product forming device comprises a vibration platform 1, a door-shaped frame 2, a mold box 3 on the vibration platform 1, and a die head 5 matched with the mold box 3, a pressurized cylinder 7 for driving the die head 5 to rise and fall is installed on the crossbeam of the door-shaped frame 2, the crossbeam is erected above the vibration platform 1, and the two ends of the crossbeam are respectively vertically connected to a left column and a right column, a temperature detection mechanism for checking the temperature of the paste 4 in the mold box 3 is installed on the left column, the temperature detection mechanism comprises a mounting support 8 installed on the inner side of the left column and a drive motor 9 installed on the mounting support 8, the drive motor 9 is vertically arranged, a horizontal connecting rod 10 is installed on the power output shaft of the drive motor 9, and a temperature sensor 11 for detecting the temperature of the paste 4 in the mold box 3 is installed on the other end of the connecting rod 10.

[0029] Furthermore, the cylinder body of the pressurizing oil cylinder 7 is installed on the crossbeam of the door-shaped frame 2 , and a pressurizing buffer spring 6 for connecting with the piston rod of the pressurizing oil cylinder 7 is installed on the mold box 3 .

[0030] Furthermore, the temperature sensor 11 is an infrared thermometer, which is used to detect the temperature of the forming flue gas of the paste 4.

[0031] Furthermore, it also includes a first oil pipe connected to the rodless chamber of the pressurized oil cylinder 7, a second oil pipe connected to the rod chamber of the pressurized oil cylinder 7, and a controller 12. The temperature sensor 11 is electrically connected to the signal input end of the controller 12. A pressure transmitter 14 and a pressure regulating valve 13 are installed on the first oil pipe. The pressure transmitter 14 is electrically connected to the signal input end of the controller 12, and the pressure regulating valve 13 is electrically connected to the signal output end of the controller 12.

[0032] A pressure transmitter is a device that converts pressure into an electric signal for control and remote transmission. It can convert physical pressure parameters such as liquid sensed by the pressure measuring element sensor into a standard electrical signal and transmit it to the controller 12. The controller 12 outputs a control signal as needed to control the state of the pressure regulating valve and select a suitable external pressurization value.

[0033] Furthermore, the pressurized oil cylinder 7 is driven to rise and fall by an existing hydraulic control system (not shown), and includes a three-position four-way solenoid valve. The first oil pipe and the second oil pipe are respectively connected to the A port and the B port of the same three-position four-way solenoid valve. The P port and the T port of the three-position four-way solenoid valve are respectively connected to the oil supply pump and the oil tank through corresponding oil pipes, and the oil supply pump inlet is connected to the oil tank.

[0034] Furthermore, a material pushing mechanism is provided on one side of the vibration platform 1 .

[0035] Furthermore, the controller 12 is an existing PLC controller.

[0036] Working principle: the mold box 3 is placed on the vibration platform 1, and the paste 4 is added to the mold box 3. Then the infrared thermometer 11 is driven by the driving motor 9 to drive the connecting rod 10 to rotate to the top of the paste 4 for temperature measurement. After the temperature measurement is completed, the driving motor 9 drives the connecting rod 10 to rotate to the initial position, and the die head 5 is driven by the pressurized cylinder 7 to descend and contact with the paste 4. The vibration platform 1 starts to vibrate and form. After a certain delay, the pressurized cylinder 7 starts to pressurize the die head according to the temperature detection data. The cylinder 7 pressurizes the die head 5 through the buffer spring. The size of the pressurization is set according to the data collected by the infrared thermometer 4 by the controller 12. The controller 12 outputs a control signal to the pressure regulating valve 13 according to the set pressure. The system pressure is fed back to the controller 12 through the pressure transmitter 14 for closed-loop regulation. The size of the system pressure is adjusted according to the temperature detection data. Different paste temperatures set different pressure values ​​to meet the production needs of different carbon blocks to achieve the best production process.

[0037] The modification of the prior art in this specific implementation method lies in the hardware part. At the same time, the computer program involved is a simple program that can be easily implemented by technicians in this field using the existing computer program development platform and well-known programming methods. In this article, the infrared thermometer 4, controller 12, pressure regulating valve 13 and pressure transmitter 14 are just a simple use of their functions, and do not involve improvements in methods and programs.

[0038] The higher the temperature of the paste 4 is, the greater the elastic aftereffect formed inside the carbon green body will be if the molding pressure of the paste 4 is not changed, and the carbon product is prone to batch cracks during the baking process. The present application detects the molding flue gas temperature according to the temperature sensor 11, selects a suitable external pressurization value, solves the relationship between the specific pressure and the temperature, determines the specific pressure value of the molding process, makes its volume density more uniform, and avoids the internal expansion cracks of the product to solve the above problems.

[0039] Furthermore, the infrared thermometer has a measuring range of 50-200°C and an error value of ±1.

[0040] Experimental data: When the bulk density of the carbon green body is stable at 1.67, the transverse and longitudinal expansion cracks at the bottom of the carbon bowl of the carbon green body are basically avoided after sintering, and the bulk density is stable at a typical value of 1.60-1.62. Calculation of the pressurization process of the molding device: the weight of the die head hammer + the specific pressure value of the carbon green body after the hydraulic system is pressurized.

[0041] Experimental guidance value: 1. When the temperature in the mold box is 140-147℃, the molding machine is set to a pressure floating value of 1.7-5.0MPa, which can be pressurized to 5.0MPa in combination with the molding density value;

[0042] 2. When the temperature in the mold box is 148-153℃, the molding machine sets the pressure floating value to 1.7-3.0MPa;

[0043] 3. When the temperature inside the mold box is above 154°C, the molding machine is set to a pressure fluctuation value lower than 1.7MPa.

[0044] The size of the system pressure is adjusted according to the temperature detection data, and different pressure values ​​are set for different paste temperatures to meet the production needs of different carbon blocks to achieve the best production process.

[0045] The utility model has the following beneficial effects:

[0046] In the carbon product forming device described in the utility model, the temperature sensor can be driven by the driving motor to rotate the connecting rod to the top of the paste to measure the temperature. After the temperature measurement is completed, the temperature sensor is driven by the driving motor to rotate the connecting rod to the initial position, so that the temperature of the paste in the detection mold box can be detected, and it will not interfere with the lifting and lowering of the die head in the non-detection state.

[0047] The carbon product forming device described in the utility model detects the forming flue gas temperature according to a temperature measuring sensor, selects a suitable external pressurization value, solves the relationship between specific pressure and temperature, determines the specific pressure value of the forming process, makes its volume density more uniform, and avoids internal inflation cracks of the product to solve the existing problems.

[0048] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the present utility model is defined by the attached claims and their equivalents.

[0049] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A carbon product forming device, comprising a vibration platform, a door-shaped frame, a mold box on the vibration platform, and a die head matched with the mold box, a pressurized oil cylinder for driving the die head to rise and fall is installed on the crossbeam of the door-shaped frame, the crossbeam is erected above the vibration platform, and the two ends of the crossbeam are respectively vertically connected to a left column and a right column, characterized in that: A temperature detection mechanism for checking the temperature of the paste in the mold box is installed on the left column. The temperature detection mechanism includes a mounting support installed on the inner side of the left column and a drive motor installed on the mounting support. The drive motor is vertically arranged, and a horizontal connecting rod is installed on the power output shaft of the drive motor. A temperature sensor for detecting the temperature of the paste in the mold box is installed at the other end of the connecting rod.

2. The carbon product forming device according to claim 1, characterized in that: The cylinder body of the pressurizing oil cylinder is installed on the crossbeam of the door-type frame, and the mold box is installed with a pressurizing buffer spring for connecting with the piston rod of the pressurizing oil cylinder.

3. The carbon product forming device according to claim 2, characterized in that: The temperature sensor is an infrared thermometer.

4. The carbon product forming device according to claim 3, characterized in that: It also includes a first oil pipe connected to the rodless chamber of the pressurized oil cylinder, a second oil pipe connected to the rod chamber of the pressurized oil cylinder, and a controller. The temperature sensor is electrically connected to the signal input end of the controller. A pressure transmitter and a pressure regulating valve are installed on the first oil pipe. The pressure transmitter is electrically connected to the signal input end of the controller, and the pressure regulating valve is electrically connected to the signal output end of the controller.

5. The carbon product forming device according to claim 4, characterized in that: The infrared thermometer has a measuring range of 50-200°C and an error value of ±1.

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