CN114993051A - Sintering machine sealing device based on sensor adjustment - Google Patents

Abstract

The invention relates to a sintering machine sealing device based on sensor adjustment, which comprises a sealing block, a control panel, air pressure, flow and air speed sensors, a sensor data line, a driving motor and a four-bar mechanism, wherein the sealing block is arranged on the upper surface of the control panel; the sealing blocks are respectively transversely arranged below the bottom beams of the trolley and form certain gaps with the bottom beams of the trolley; the four-bar linkage mechanisms are respectively and correspondingly connected to the bottom ends of the sealing blocks; the four-bar linkage mechanisms are respectively and independently driven by the driving motors; the air pressure, flow and air speed sensors are respectively arranged outside gaps between the sealing blocks and the bottom beams of the trolley; the air pressure, flow and air speed sensors are connected with the control panel through sensor data lines; the control panel is respectively connected with each driving motor through a sensor data line. The invention can collect various signal values in time, thereby quickly adjusting the position of the sealing block, achieving better sealing effect, saving energy and meeting the current requirements of green development, energy conservation and emission reduction.

Description

A sensor-based sealing device for sintering machine

technical field

The invention relates to the technical field of sintering equipment sealing in the metallurgical industry, in particular to a sensor-based sintering machine sealing device.

Background technique

At present, the sintering technology in the domestic metallurgical industry has achieved unprecedented development. At the same time, the air leakage of the sintering machines used in China is serious, and the air leakage rate is generally high, up to more than 60%, which is equivalent to more than half of the work of the fan. is useless. The air leakage problem of the sintering machine directly leads to the increase of the energy consumption of the sintering equipment, the sharp decline of the output and quality of the sintered ore, and the reduction of the sintering productivity. In the sintering process of the sintering machine, the air leakage phenomenon is a very unfavorable factor, which seriously affects the technical indicators of sintering production. The air leakage of the sintering machine will reduce the effective air extraction rate of the exhaust fan and fail to meet the production expectations, so that the contact between the sintered ore and oxygen is not sufficient, and the sintering ore will not be completely burned, resulting in an increase in the rate of ore returning; and due to the increase of useless air, the normal operation is maintained. The output must increase the negative air pressure of the bellows. This situation increases the load of the fan and increases the consumption of electricity. At the same time, some foreign objects can easily enter the flue through the air leakage gap. Reduce the service life of the fan. Among the air leakage problems of the sintering machine, the air leakage problem at the head and tail of the sintering machine is the main problem of the air leakage phenomenon. If the air leakage at the head and tail can be effectively reduced, the air leakage problem of the sintering machine can be better solved.

The current air leakage prevention device at the head and tail of the sintering machine is mainly designed around the traditional movement mechanism and movement principle. This kind of motion structure has many transmission pairs. In addition, the air leakage rate of the sealing plate and the bottom beam of the trolley cannot be effectively measured, so that the position of the sealing block and the trolley can be adjusted appropriately.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a sensor-based sealing device for sintering machines. By using multiple air pressure, flow and wind speed sensors to measure the air pressure, flow and other signal values of the gap between the trolley and the sealing block, an algorithm is used to measure the collected data. The signal performs specific processing, so as to effectively adjust the sealing position of the sealing block to ensure the sealing effect.

The technical scheme adopted in the present invention is as follows:

The sintering machine sealing device based on sensor adjustment proposed by the present invention includes a sealing block, a control board, an air pressure, flow and wind speed sensor, a sensor data line, a drive motor and a four-bar linkage mechanism; the sealing blocks are arranged horizontally on the There is a certain gap between the bottom beam of the trolley and the bottom beam of the trolley; the four-bar linkage mechanism is respectively connected to the bottom end of each sealing block; the four-bar linkage mechanism is separately driven by the driving motor; the air pressure , flow and wind speed sensors are respectively arranged on the outside of the gap between each sealing block and the bottom beam of the trolley; the air pressure, flow and wind speed sensors are connected with the control board through the sensor data lines; the control board is respectively connected with each Drive motor connection.

Further, the sealing block includes a steel ball, a sealing groove and a high-strength magnet; the steel balls are respectively arranged inside the sealing groove to form rolling friction with the bottom beam of the trolley; the lower end surface of the sealing groove passes through the high-strength magnet. Connect with the upper end of the four-bar linkage.

Further, the stm32G431 microcontroller is arranged inside the control board; the stm32G431 microcontroller is respectively connected with the drive motor and the air pressure, flow and wind speed sensors; the outside of the control board is provided with a data display screen and controls each driver individually. Motor buttons.

Further, the display screen is an LCD display screen.

Further, the outside of the sensor data line is provided with a water cooling system.

Further, the material of the four-bar linkage mechanism is metal or alloy.

Compared with the prior art, the present invention has the following beneficial effects:

First of all, the present invention introduces the idea of programming control for the first time, measures the air pressure and flow at the seal through multiple sensors, and uses the air pressure and flow value as feedback to drive the motor, so as to quickly and effectively adjust the position of the sealing block; The collected signal values such as air pressure and flow are displayed on the LCD screen, and the data is updated in real time, which solves the problem that serious air leakage could not be found in time in the past; in addition, an alarm is set up, when the air pressure or flow value is greater than a certain set value , the adjustment of the position of the sealing block can not solve the problem, the control panel will sound an alarm, and the abnormal position will be displayed on the LCD screen, which is convenient for maintenance.

In the past, the sealing plate of the sealing device of the sintering machine was in close contact with the bottom beam of the trolley in the form of counterweight, and the position of the sealing plate could not be adjusted by itself during production. To adjust the up and down position of the sealing block, it can also set the sensitivity during adjustment. When the sensor is abnormal, the operator can also drive the motor through the button to effectively adjust the position of the sealing block.

In addition, the present invention can use multiple sensors. In order not to waste the performance of the control board, sensors can also be introduced in other places where air pressure, flow and wind speed need to be measured, and then the collected signals are sent back to the control board for processing, thereby Give full play to the maximum performance of the control panel, and can effectively monitor the places with serious air leakage, saving costs and maximizing benefits.

Description of drawings

FIG. 1 is a schematic cross-sectional structure diagram of a front view of a sensor-based adjustment of the position of a sealing block proposed by the present invention;

Fig. 2 is the top-view structure schematic diagram of four sealing blocks in Fig. 1;

FIG. 3 is a left structural schematic diagram of the relative positions of the four sealing blocks and the bottom beam of the trolley in FIG. 1 .

Wherein, reference signs: 1- trolley bottom beam; 2- steel ball; 3- high-strength magnetizing magnet; 4- sealing groove; 5- air pressure, flow and wind speed sensor; 6- bellows; 7- sensor data cable; 8 - drive motor; 9- water cooling system; 10- control board; 11- button; 12- four-bar linkage.

Detailed ways

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

It should be noted that, in the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", " The orientation or positional relationship indicated by "right" and the like is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not mean that the device or element must have a specific orientation, be constructed and operate.

Referring to Figs. 1 to 3, the specific structure of an embodiment of a sensor-based sintering machine sealing device provided by the present invention is given. In this embodiment, the device includes four sealing blocks, air pressure, flow and wind speed sensors 5 , sensor data lines 7 , four driving motors 8 , a control board 10 and four four-bar linkage mechanisms 12 . The four sealing blocks are respectively arranged laterally under the trolley bottom beam 1 along the width of the trolley bottom beam 1 and have a certain gap with the trolley bottom beam 1; the four link mechanisms 12 are respectively connected in one-to-one correspondence. At the bottom end of the four sealing blocks, compared with the previous complex structure, this structure is more convenient to maintain, and the material of the four-bar linkage mechanism 12 can be made of metals and alloys with different rigidity strengths as required; The link mechanism 12 is separately driven by the drive motor 8; the air pressure, flow and wind speed sensors 5 are respectively arranged on the outside of the gap between each sealing block and the trolley bottom beam 1, and the air pressure, flow and wind speed sensors 5 are not only limited to It is only arranged in the gap between the sealing block and the bottom beam 1 of the trolley, and can also be arranged in other positions to monitor the sealing status of each sealing block of the entire sealing device, and make full use of the performance of the microcontroller to process data, that is, the air pressure. The number of , flow and wind speed sensors 5 can be increased according to needs. In theory, the more the number, the higher the measurement accuracy, but the cost will also increase, so increase the appropriate number as needed; the air pressure, flow and wind speed sensors 5 is connected with the control board 10 through the sensor data line 7; the control board 10 is respectively connected with each drive motor 8 through the sensor data line 7, the control board 10 can accurately and quickly find out the abnormal position, and display the corresponding position on the display screen The outside of the sensor data line 7 is provided with a water cooling system 9, so as to effectively ensure that the data line transmits data normally under high temperature.

There is a small gap between the sealing block and the bottom beam 1 of the trolley, and the air pressure, flow and wind speed sensors 5 are assembled next to the small gap to collect various signal values and transmit the air pressure and other signal values to the microprocessor in time Screening and processing are carried out in the process, and then the processed air pressure, flow and wind speed values are used as feedback to drive the motor 8 to rotate the corresponding angle. The driving motor 8 is used as the power source of the four-bar linkage mechanism 12. When the driving motor 8 rotates, it will drive the sealing block on the four-bar linkage mechanism 12 to move up and down, so as to maintain a small gap between the sealing block and the bottom beam 1 of the trolley. Within a stable range; since each sealing block can move independently, the sealing area is increased, thereby effectively reducing the air leakage rate of the sintering machine.

Wherein, the sealing block includes steel balls 2, high-strength magnets 3 and sealing grooves 4; steel balls 2 with different diameters are respectively arranged inside the sealing grooves 4 to form rolling friction with the bottom beam 1 of the trolley; the sealing The lower end surface of the groove 4 is connected with the upper end of the four-bar linkage mechanism 12 through the high-strength magnet 3; the sealing block designed by the present invention is different from the traditional sealing plate. The previous sealing plate is a metal plate with wear-resistant surface. The sealing block adopted is to add steel balls 2 of different diameters in the sealing groove 4, so that the surface of the sealing block and the bottom beam 1 of the trolley form rolling friction, which reduces the wear of the structure and prolongs the life of the whole set of sealing devices; Among them, the sealing block is not composed of a whole piece of sealing groove filled steel balls with a width similar to the bottom beam of the trolley. The whole sealing block cannot be fully contacted with the bottom beam 1 of the trolley, which will aggravate the air leakage of the sintering machine and reduce the sintering quality of the sinter. The sealing block, Figure 3 is a schematic diagram of its distribution, the number of the sealing block is related to the trolley bottom beam 1 and the sealing requirements.

In this embodiment, the internal core element of the control board is the stm32G431 microcontroller; the stm32G431 microcontroller is connected to the drive motor 8 and the air pressure, flow and wind speed sensors 5 respectively; the control board 10 is provided with a display data outside LCD display screen and buttons 11 for individually controlling each driving motor; the air pressure, flow and wind speed sensors 5 can not only use the collected signals as feedback to drive the driving motor 8 to adjust the position of the sealing block, but also can be used to monitor the sealing device Whether there is any abnormality in the sealing process, when the abnormality occurs, the control panel 10 will issue an alarm to promptly remind the operator that the sealing device of the sintering machine is out of order and reduce unnecessary losses.

The specific working process of the present invention is as follows: on the one hand, during the sintering process, the trolley moves continuously, and there is a certain gap between the trolley bottom beam 1 and each sealing block, and the air pressure, flow rate and speed sensor 5 of the present invention is installed Outside the gap, monitor the air pressure and other signals at the gap, and then use the collected air pressure, flow and wind speed values as feedback to adjust the movement of the drive motor 8; the specific programming idea is to first pass the collected air pressure and other signals through the stm32G431 micro-controller Filter and filter the unreasonable data, and then perform average processing, and judge the calculated average air pressure, flow velocity and other signal values with the pre-set values. If the average value is greater than the set value, the corresponding drive motor 8 The corresponding four-bar linkage 12 will be driven to drive the corresponding sealing block to move upward, otherwise it will fall. The extent of the rise or fall of the sealing block mainly depends on the difference between the average value and the set value. The design of the present invention has four sealing blocks, which are composed of sealing grooves 4, steel balls 2 and high-strength magnets 3. It should be stated that the number of them depends on the width of the trolley bottom beam 1 and the sealing requirements. During the sealing process, the following situations may occur. Signal values such as air pressure, flow rate, and air pressure collected by the speed sensor 5 beside the four sealing blocks are different, so that the rotation angles of the four driving motors 8 are inconsistent, and finally the surface of the sealing block is not The same level, which is the purpose of the present invention, conforms to normal phenomena. Buttons on the control panel The objects controlled by the four buttons correspond to the four sealing blocks in Figure 2, and the sealing blocks can be moved up and down by means of buttons. This setting can solve some unexpected events, such as when the air pressure, flow rate and wind speed After the sensor 5 fails, the sealing block cannot move up and down, and the sealing block can be controlled by the button 11 of the control board. In addition, the abnormal signal alarm value is also set by programming. When the air pressure, flow rate and the signal value of the air pressure, flow rate and other signals collected by the signal sensor 5 are greater than the set alarm value, an alarm will be issued to remind the production workers to seal the sintering machine in time. The device is abnormal. In order to facilitate maintenance, the abnormal position is displayed on the display screen of the control board 10 through programming. As shown in Figure 2, the second sealing block has abnormal sealing, and the corresponding sensor will return abnormal value. The abnormal value is greater than the alarm set in advance. When the value is detected, an alarm will sound, and the number corresponding to the abnormal sealing block will be reflected on the display screen, which will help the maintenance workers to solve the problem quickly, reduce unnecessary time consumption, and speed up the production efficiency of the enterprise.

The present invention introduces the program control, signal acquisition and processing scheme on the basis of the traditional structure design. Compared with the traditional sealing structure, the present invention has many advantages, among which the most significant advantage is that the air pressure in the sintering process can be collected in time. It monitors the sealing condition of the sealing device of the sintering machine around the clock, and uses the collected air pressure, flow and wind speed signals as feedback to adjust the upper and lower positions of the sealing block, so as to realize the dynamic air leakage prevention function. The invention can collect various signal values in time, so as to quickly adjust the position of the sealing block, achieve better sealing effect, save energy, and meet the current requirements of green development, energy saving and emission reduction.

The above-mentioned embodiments are only to describe the preferred embodiments of the present invention, and do not limit the scope of the present invention. On the premise of not departing from the design spirit of the present invention, those of ordinary skill in the art can Such deformations and improvements shall fall within the protection scope determined by the claims of the present invention.

Claims (6)

1. A sensor-based sintering machine sealing device, characterized in that: the device comprises a sealing block, a control board, an air pressure, flow and wind speed sensor, a sensor data line, a drive motor and a four-bar linkage; the sealing block They are arranged horizontally under the bottom beam of the trolley and have a certain gap between them and the bottom beam of the trolley; the four-bar linkage mechanism is respectively connected to the bottom end of each sealing block; the four-bar linkage mechanism is separately driven by the drive motor The air pressure, flow and wind speed sensors are respectively arranged on the outside of the gap between each sealing block and the bottom beam of the trolley; the air pressure, flow and wind speed sensors are connected with the control board through the sensor data line; the control board passes the sensor data The wires are respectively connected to the respective drive motors. 2. A sensor-based sealing device for sintering machines according to claim 1, characterized in that: the sealing block comprises a steel ball, a sealing groove and a high-strength magnet; the steel balls are respectively arranged inside the sealing groove, and the Rolling friction is formed between it and the bottom beam of the trolley; the lower end face of the sealing groove is connected with the upper end of the four-bar linkage mechanism through high-strength magnets. 3. The sintering machine sealing device based on sensor adjustment according to claim 1, characterized in that: the control board is provided with a stm32G431 microcontroller; the stm32G431 microcontroller is connected with the drive motor, air pressure, flow is connected with the wind speed sensor; the control board is provided with a data display screen and buttons for individually controlling each driving motor. 4 . The sealing device for a sintering machine based on sensor adjustment according to claim 3 , wherein the display screen is an LCD display screen. 5 . 5 . The sensor-based sealing device for sintering machines according to claim 1 , wherein a water cooling system is provided outside the sensor data line. 6 . 6 . The sensor-based sintering machine sealing device according to claim 1 , wherein the material of the four-bar linkage is metal or alloy. 7 .

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