Soft magnetic ferrite pelletizing automatic control system

Abstract

The utility model provides a soft magnetic ferrite pelletizing automatic control system which comprises a first raw material conveying system, a raw material conveying and weighing system, a second raw material conveying system, an inclined mixing pelletizer, a transition bin, a third raw material conveying system, a screening system, a water flow conveying system and a control cabinet, the first raw material conveying system is used for conveying mixed materials into the raw material conveying and weighing system, the raw material conveying and weighing system is used for achieving weighing, metering and conveying of the materials, and the second raw material conveying system is used for directly conveying the materials flowing out of the raw material conveying and weighing system into the inclined mixing granulator. A discharge port of the inclined mixing granulator is in through connection with a feed port of the transition bin, the third raw material conveying system is used for conveying materials flowing out of the transition bin into the screening system, and the water flow conveying system is used for quantitatively conveying water flow into the inclined mixing granulator. The system can accurately control the feeding amount and the water inlet amount, and then the stable pelletizing quality can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to soft magnetic ferrite processing technical field, concretely is a kind of soft magnetic ferrite pelletizing automatic control system. BACKGROUND

[0002] Soft magnetic ferrite is an important magnetic material, with high magnetic permeability, low loss and high resistivity and the like advantages, is widely used in electronic, communication, power supply and the like field.With the development of technology, the performance of soft magnetic ferrite in high frequency, low loss and nanometer will be further promoted.

[0003] The technological process of soft magnetic ferrite is generally as follows: raw material mixing, pre-burning, crushing, forming, sintering, processing.The raw material of soft magnetic ferrite is in powder form, before carrying out pre-burning technological process, to facilitate improving pre-burning effect, generally, mixed powder raw material is pelletized.Currently, the pelletization of powder is manually weighed and fed, and the feeding weight is manually observed, so the feeding weight cannot be controlled;water is manually sprayed, so the water quantity cannot be accurately controlled, and it is easy to add too much or too little, thereby leading to unstable pelletization quality. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of soft magnetic ferrite pelletizing automatic control system, the system can accurately control feeding quantity and water quantity, in turn, it is conducive to guaranteeing the stability of pelletization quality.

[0005] The technical scheme adopted by the utility model to solve its technical problems is as follows: a kind of soft magnetic ferrite pelletizing automatic control system, including first raw material conveying system, raw material conveying weighing system, second raw material conveying system, inclined type mixing granulator, transition bin, third raw material conveying system, screening system, water flow conveying system, control cabinet, the first raw material conveying system is used to convey mixed material to the raw material conveying weighing system, the raw material conveying weighing system is used to realize the weighing metering conveying of material, the second raw material conveying system is used to convey the material directly from the raw material conveying weighing system to the inclined type mixing granulator, the discharge port of the inclined type mixing granulator is connected with the inlet of the transition bin, the third raw material conveying system is used to convey the material from transition bin to the screening system, the water flow conveying system is used to quantitatively convey water flow to the inclined type mixing granulator;The control cabinet includes PLC controller, frequency converter, and the control cabinet can control the operation of the first raw material conveying system, raw material conveying weighing system, inclined type mixing granulator, transition bin, third raw material conveying system, screening system and water flow conveying system.

[0006] Preferably, the first raw material conveying system comprises a positive pressure pneumatic conveying pipe and a first pneumatic on-off valve arranged on the positive pressure pneumatic conveying pipe, and the PLC controller is electrically connected with a solenoid valve of the first pneumatic on-off valve.

[0007] Further, the raw material conveying and weighing system comprises a material bin, a weighing sensor and a double-layer screw conveyor, the weighing sensor is arranged to suspend and vertically support the material bin, the double-layer screw conveyor is connected with the material bin in a penetrating manner at an inlet end of the double-layer screw conveyor and an outlet end of the material bin, the positive pressure pneumatic conveying pipe is connected with the material bin in a penetrating manner at an inlet of the positive pressure pneumatic conveying pipe, and the weighing sensor and the double-layer screw conveyor are electrically connected with the PLC controller.

[0008] Further, a bag-type dust collector is arranged at an upper portion of the material bin, an air inlet pipe of the bag-type dust collector is connected with the material bin in a penetrating manner, and the PLC controller is electrically connected with the bag-type dust collector.

[0009] Further, the second raw material conveying system comprises a first material conveying pipe, and the first material conveying pipe is connected with the double-layer screw conveyor and the inclined mixing granulator in a penetrating manner at an inlet of the inclined mixing granulator.

[0010] Further, the third raw material conveying system comprises a belt conveyor, an inlet end of the belt conveyor is located directly below an outlet pipe of the transition bin, a second pneumatic on-off valve is arranged on the outlet pipe of the transition bin, and the PLC controller is electrically connected with a solenoid valve of the second pneumatic on-off valve.

[0011] Further, the screening system comprises a drum screen, and an outlet end of the belt conveyor is located directly above an inlet end of the drum screen.

[0012] Further, the water flow conveying system comprises a first pipe, a first water pump, a flow meter and a first electric on-off valve, one end of the first pipe is connected with a water source in a penetrating manner, the other end of the first pipe is connected with a spray head in the inclined mixing granulator in a penetrating manner, the first water pump, the flow meter and the first electric on-off valve are connected in series on the first pipe, the flow meter is located downstream of the first water pump, and the first water pump, the flow meter and the first electric on-off valve are electrically connected with the PLC controller.

[0013] Further, a bypass pipeline is arranged on one side of the first electric on-off valve, a first manual on-off valve and a second electric on-off valve are arranged on the bypass pipeline in sequence, and the second electric on-off valve is electrically connected with the PLC controller.

[0014] Further, a first pneumatic hammer is arranged at one side of the bottom of the material bin, a second pneumatic hammer is arranged on the discharge pipe of the material bin, a first anti-rotation type material level switch is arranged at one side of the upper portion of the material bin, a second anti-rotation type material level switch and a third anti-rotation type material level switch are arranged at one side of the upper portion and the lower portion of the transition bin respectively, and a third pneumatic hammer is arranged at one side of the bottom of the transition bin, the PLC controller can control the operation of the first pneumatic hammer and the second pneumatic hammer, and the first anti-rotation type material level switch, the second anti-rotation type material level switch and the third anti-rotation type material level switch are electrically connected with the PLC controller.

[0015] The balling quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are part of the preferred embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 The balling quality is improved.

[0018] In the diagram: 11 Positive pressure pneumatic conveying pipeline, 12 First pneumatic switch valve, 21 Material silo, 22 Weighing sensor, 23 Double-layer screw conveyor, 24 Bag filter dust collector, 3 First material conveying pipe, 4 Inclined mixing granulator, 5 Transition silo, 52 Second pneumatic switch valve, 6 Belt conveyor, 7 Drum screen, 81 First pipeline, 82 First water pump, 83 Flow meter, 84 First electric switch valve, 85 Bypass pipeline, 86 Second electric switch valve, 87 First manual switch valve, 9 Control cabinet, 101 First pneumatic hammer, 102 Second pneumatic hammer, 103 Third pneumatic hammer, 201 First rotary paddle level switch, 202 Second rotary paddle level switch, 203 Third rotary paddle level switch. Detailed Implementation

[0019] The following will describe specific embodiments and appendices. Figure 1 The technical solutions in the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some preferred embodiments of this utility model, and not all embodiments. Those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0020] This invention provides a self-control system for soft magnetic ferrite pelletizing (such as...). Figure 1As shown, the system includes a first raw material conveying system, a raw material conveying and weighing system, a second raw material conveying system, an inclined mixing granulator 4, a transition chamber 5, a third raw material conveying system, a screening system, a water flow conveying system, and a control cabinet 9. The inclined mixing granulator 4 is a known mature technology product in the prior art, so its specific structure and working principle will not be described in detail. The first raw material conveying system is used to convey the mixed material to the raw material conveying and weighing system. The raw material conveying and weighing system is used to realize the weighing and metering of the material. The raw material conveying and weighing system adopts an automatic mechanized system to automatically realize the weighing and metering of the material. Compared with manual weighing, it has higher accuracy and lower labor intensity, which is conducive to improving pelletizing efficiency. The second raw material conveying system is used to directly convey the material flowing out of the raw material conveying and weighing system to the inclined mixing granulator 4. The discharge port of the inclined mixing granulator 4 is connected to the inlet of the transition chamber 5. Next, the transition chamber 5 is used to temporarily store the pelletized particles, facilitating subsequent batch processing. The third raw material conveying system transports the material flowing out of the transition chamber 5 to the screening system, which screens the pelletized particles flowing out of the transition chamber 5 to separate qualified particles for the next process step. The water conveying system quantitatively delivers water into the inclined mixing granulator 4. The water conveying system uses an automated mechanized method to control the water volume, enabling precise control of the water volume and ensuring accurate proportioning with the material in the inclined mixing granulator 4, thus guaranteeing the subsequent pelletizing quality. The control cabinet 9 includes a PLC controller and a frequency converter, and can control the operation of the first raw material conveying system, the raw material conveying and weighing system, the inclined mixing granulator 4, the transition chamber 5, the third raw material conveying system, the screening system, and the water conveying system. In practical applications, the PLC controller uses the frequency converter to control the specific granulation process of the inclined mixing granulator 5. The working cycle of the inclined mixing granulator 5 is set in the PLC controller. After one working cycle is completed, the inclined mixing granulator 4 automatically opens the discharge port, thereby realizing the conveying of particles into the transition chamber 5. After the discharge port has been open for a certain period of time, the inclined mixing granulator 4 stops running and then closes the discharge port, thus completing one granulation process.

[0021] Based on the above embodiments, the specific implementation of the first raw material conveying system is as follows: The first raw material conveying system includes a positive pressure pneumatic conveying pipeline 11 and a first pneumatic switch valve 12. The first pneumatic switch valve 12 is installed on the positive pressure pneumatic conveying pipeline 11. The positive pressure pneumatic conveying pipeline 11 uses the high-speed airflow flowing inside it to convey mixed powder raw materials. The first pneumatic switch valve 12 is in an open state during material conveying and in a closed state after material conveying is completed. The PLC controller is electrically connected to the solenoid valve on the first pneumatic switch valve 12. The PLC controller uses the detection signal of the material level switch installed on the material bin 21 to control the opening and closing of the first pneumatic switch valve 12. Positive pressure pneumatic conveying technology is a known mature technology. Therefore, the technical principle of conveying powder materials using the positive pressure pneumatic conveying pipeline 11 in this utility model will not be described in detail here.

[0022] Based on the above embodiments, the specific implementation of the raw material conveying and weighing system is as follows: The raw material conveying and weighing system includes a material silo 21, a weighing sensor 22, and a double-layer screw conveyor 23. The material silo 21 is used to store a certain amount of powdery mixed materials. Several weighing sensors 22 provide suspended vertical support for the material silo 21. In this specific embodiment, the weighing sensor 22 can be a weighing sensor of model SB-3t produced by Ningbo Keli Sensor Technology Co., Ltd. The inlet end of the double-layer screw conveyor 23 is connected to the outlet end of the material silo 21. The double-layer screw conveyor 23 is a known mature technology product on the market, so the specific structure and working principle of the double-layer screw conveyor 23 will not be described in detail. The outlet end of the positive pressure pneumatic conveying pipe 11 is connected to the inlet of the material silo 21. The weighing sensor 22 and the double-layer screw conveyor 23 are both electrically connected to the PLC controller. In practical applications, when it is necessary to release a quantitative amount of material from the material bin 21, the PLC controller starts the double-layer screw conveyor 23 to output the material. During the continuous conveying process of the double-layer screw conveyor 23, the weighing sensor 22 continuously transmits the weight detection signal to the PLC controller. The PLC controller then calculates the amount of material reduction in the material bin 21 in real time based on the weight detection signal. When the set amount of reduction is reached, the PLC controller stops the operation of the double-layer screw conveyor 23, thereby achieving precise quantitative conveying of the material in the material bin 21. In the process of conveying powder materials using the double-layer screw conveyor 23, to effectively prevent arching within the material hopper 21 while ensuring the flowability of the powder materials, a first pneumatic hammer 101 is installed on the lower side wall of the material hopper 21. The first pneumatic hammer 101 is electrically connected to the PLC controller. During material conveying, the first pneumatic hammer 101 continuously strikes the side wall of the material hopper 21. Furthermore, to ensure that the powder raw materials can flow smoothly into the double-layer screw conveyor 23, a second pneumatic hammer 102 is installed on the discharge pipe at the bottom of the material hopper 21. The second pneumatic hammer 102 is connected to the PLC controller. The LC controller is electrically connected. During the continuous operation of the double-layer screw conveyor 23, the second pneumatic hammer 102 is always in working state. Furthermore, when using the positive pressure pneumatic conveying pipeline 11 for material conveying, in order to facilitate the realization of excessive material in the material bin 21, a first rotary paddle level switch 201 is set on the upper side of the material bin 23. In actual application, when the first rotary paddle level switch 201 detects powder material, it sends a detection signal to the PLC controller. After receiving the detection signal, the PLC controller closes the first pneumatic switch valve 12, thereby completing the conveying of material into the material bin 21.

[0023] Based on the above embodiments, when powder raw material particles are continuously conveyed into the material silo 23 using the positive pressure pneumatic conveying pipe 11, there is a certain amount of powder diffusion into the air. To improve the air quality around the material silo 23, a bag filter 24 is installed at the top of the material silo 21. The air inlet pipe of the bag filter 24 is connected to the interior of the material silo 21. The PLC controller is electrically connected to the bag filter 24. During the material conveying process, the bag filter 24 is turned on synchronously, which can absorb and filter dust particles in the air inside the material silo 21. This can effectively prevent powder particles from diffusing outward from the material inlet of the material silo 23, thereby improving the air quality.

[0024] Based on the above embodiments, the specific implementation of the second raw material conveying system is as follows: The second raw material conveying system includes a first material conveying pipe 3, which realizes the through connection between the discharge end of the double-layer screw conveyor 23 and the inlet of the inclined mixing granulator 4. In order to effectively prevent the diffusion of powder particles, both ends of the first material conveying pipe 3 are sealed to the discharge end of the corresponding double-layer screw conveyor 23 and the inlet of the inclined mixing granulator 4.

[0025] Based on the above embodiments, the specific implementation of the third raw material conveying system is as follows: The third raw material conveying system includes a belt conveyor 6, the inlet end of which is located directly below the outlet pipe of the transition chamber 5. A second pneumatic switch valve 51 is installed on the outlet pipe of the transition chamber 5. The PLC controller is electrically connected to the solenoid valve on the second pneumatic switch valve 51. In practical applications, in order to facilitate effective monitoring of the amount of material in the transition chamber 5, a second rotary paddle level switch 202 and a third rotary paddle level switch 203 are respectively installed on the upper and lower sides of the transition chamber 5. In practical applications, when the second rotary paddle level switch 202 located at the top detects material, it sends a detection message to the PLC controller. Based on the detection information, the PLC controller activates the second pneumatic switch valve 51. Once the second pneumatic switch valve 51 opens, the material is conveyed onto the belt conveyor 6, which then transports the pelletizing particles. During the continuous release of pelletizing particles from the transition chamber 5, when the third rotary paddle level switch 203 no longer detects pelletizing particles, it sends a detection signal to the PLC controller. Based on the detection signal, the PLC controller closes the second pneumatic switch valve 51, thus effectively releasing the material from the transition chamber 5 and allowing it to enter the next storage process. To ensure smooth material flow during the release of pelletizing particles from the transition chamber 5, a third pneumatic hammer 103 is installed on one side of the lower part of the transition chamber 5. The PLC controller is electrically connected to the third pneumatic hammer 103.

[0026] Based on the above embodiments, the specific implementation of the screening system is as follows: the screening system includes a drum screen 7, the discharge end of the belt conveyor 6 is located directly above the inlet end of the drum screen 7, the belt conveyor 6 continuously transports material particles into the drum screen 7, and by utilizing the screening capacity of the drum screen 7, qualified pelletizing particles are sorted, thereby facilitating the smooth progress of the next work process.

[0027] Based on the above embodiments, the specific implementation of the water flow conveying system is as follows: The water flow conveying system includes a first pipe 81, a first water pump 82, a flow meter 83, and a first electric switching valve 84. One end of the first pipe 81 is connected to a water source, and the other end is connected to a spray head inside the inclined mixing granulator 4. The first water pump 82, the flow meter 83, and the first electric switching valve 84 are connected in series on the first pipe 81, and the flow meter 83 is located downstream of the first water pump 82. The first water pump 82, the flow meter 83, and the first electric switching valve 84 are electrically connected to the PLC controller. In practical applications, when the inclined mixing granulator 4 re-enters a new pelletizing process, after the powder raw materials are added, the PLC controller starts the first electric switch valve 84, and then starts the flow meter 83 and the first water pump 82, thereby continuously adding water into the inclined mixing granulator 4. During the continuous water addition process, the flow meter 83 continuously sends the flow detection signal to the PLC controller. When the added water reaches the set threshold, the PLC controller shuts off the first water pump 82, and then shuts off the first pipeline 81 and the flow meter 83, thereby achieving precise water addition into the inclined mixing granulator 4.

[0028] In practical applications, to improve the effectiveness of water supply, a bypass pipe 85 is installed on one side of the first electric switch valve 84. A first manual switch valve 87 and a second electric switch valve 86 are sequentially installed on the bypass pipe 85. The second electric switch valve 86 is electrically connected to the PLC controller. During normal operation, both the first manual switch valve 87 and the second electric switch valve 86 are in the closed state. When the first electric switch valve 84 fails to open normally, the first manual switch valve 87 is manually opened, and the PLC controller directly controls the second electric switch valve 86, thereby ensuring an effective water supply.

[0029] In this utility model, "upper", "lower", "front", "back", "left", and "right" are all relative positions used to facilitate the description of positional relationships, and therefore cannot be understood as absolute positions as limitations on the scope of protection.

[0030] Except for the technical features described in the specification, all other technologies are known to those skilled in the art.

[0031] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. For those skilled in the art, several improvements and modifications can be made without departing from the concept of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A self-controlled system for soft magnetic ferrite pelletizing, characterized in that, The system includes a first raw material conveying system, a raw material conveying and weighing system, a second raw material conveying system, an inclined mixing granulator, a transition silo, a third raw material conveying system, a screening system, a water conveying system, and a control cabinet. The first raw material conveying system conveys the mixed material to the raw material conveying and weighing system for weighing and metering the material. The second raw material conveying system directly conveys the material flowing out of the raw material conveying and weighing system to the inclined mixing granulator. The discharge port of the inclined mixing granulator is connected to the inlet of the transition silo. The third raw material conveying system conveys the material flowing out of the transition silo to the screening system. The water conveying system quantitatively delivers water into the inclined mixing granulator. The control cabinet includes a PLC controller and a frequency converter, and can control the operation of the first raw material conveying system, the raw material conveying and weighing system, the inclined mixing granulator, the transition silo, the third raw material conveying system, the screening system, and the water conveying system.

2. The automatic control system for soft magnetic ferrite pelletizing according to claim 1, characterized in that, The first raw material conveying system includes a positive pressure pneumatic conveying pipeline and a first pneumatic switch valve. The first pneumatic switch valve is installed on the positive pressure pneumatic conveying pipeline, and the PLC controller is electrically connected to the solenoid valve on the first pneumatic switch valve.

3. The automatic control system for soft magnetic ferrite pelletizing according to claim 2, characterized in that, The raw material conveying and weighing system includes a material silo, weighing sensors, and a double-layer screw conveyor. Several weighing sensors provide suspended vertical support for the material silo. The inlet end of the double-layer screw conveyor is connected to the outlet end of the material silo. The outlet end of the positive pressure pneumatic conveying pipeline is connected to the inlet of the material silo. Both the weighing sensors and the double-layer screw conveyor are electrically connected to the PLC controller.

4. The automatic control system for soft magnetic ferrite pelletizing according to claim 3, characterized in that, A bag filter dust collector is installed at the top of the material silo. The air inlet pipe of the bag filter dust collector is connected to the interior of the material silo. The PLC controller is electrically connected to the bag filter dust collector.

5. The automatic control system for soft magnetic ferrite pelletizing according to claim 3, characterized in that, The second raw material conveying system includes a first material conveying pipe, which enables the through connection between the discharge end of the double-layer screw conveyor and the inlet of the inclined mixing granulator.

6. The automatic control system for soft magnetic ferrite pelletizing according to claim 5, characterized in that, The third raw material conveying system includes a belt conveyor, the inlet of which is located directly below the outlet pipe of the transition chamber. A second pneumatic switch valve is installed on the outlet pipe of the transition chamber, and the PLC controller is electrically connected to the solenoid valve on the second pneumatic switch valve.

7. The automatic control system for soft magnetic ferrite pelletizing according to claim 6, characterized in that, The screening system includes a drum screen, and the discharge end of the belt conveyor is located directly above the inlet end of the drum screen.

8. The automatic control system for soft magnetic ferrite pelletizing according to claim 7, characterized in that, The water delivery system includes a first pipeline, a first water pump, a flow meter, and a first electric switch valve. One end of the first pipeline is connected to a water source, and the other end is connected to a spray head inside the inclined mixing granulator. The first water pump, flow meter, and first electric switch valve are connected in series on the first pipeline, and the flow meter is located downstream of the first water pump. The first water pump, flow meter, and first electric switch valve are electrically connected to the PLC controller.

9. The automatic control system for soft magnetic ferrite pelletizing according to claim 8, characterized in that, in A bypass pipeline is provided on one side of the first electric switch valve, and a first manual switch valve and a second electric switch valve are sequentially arranged on the bypass pipeline. The second electric switch valve is electrically connected to the PLC controller.

10. The automatic control system for soft magnetic ferrite pelletizing according to claim 9, characterized in that, A first pneumatic hammer is installed on one side of the bottom of the material silo, a second pneumatic hammer is installed on the discharge pipe of the material silo, a first rotary paddle level switch is installed on one side of the upper part of the material silo, a second rotary paddle level switch and a third rotary paddle level switch are installed on one side of the upper part and the lower part of the transition silo, respectively, and a third pneumatic hammer is also installed on one side of the bottom of the transition silo. The PLC controller can control the operation of the first and second pneumatic hammers. The first, second and third rotary paddle level switches are all electrically connected to the PLC controller.

Images