Automatic control method and device for hot steel slag crushing

Abstract

The application provides a kind of hot steel slag crushing automatic control method and device, it is related to steel slag processing technical field, the method includes: according to the temperature and weight of each slag tank, obtain the need to be handled slag tank hoisting, and it is transported to preset position;When roll pressure crushing system meets the slag condition, control the slag tank for handling to pour slag;When the slag tank for handling pour slag ends;Judge whether the roll pressure crushing system meets the crushing condition;If yes, then control the roll pressure crusher to walk;And after completing walking, start the spray water pump to work, to obtain steel slag, and judge whether the temperature of steel slag is preset temperature, and the granularity of steel slag is less than preset value;If the above conditions are all met, judge whether the receiving slag tank is in the receiving slag position, if yes, then push slag, obtain the receiving slag tank loaded with steel slag;After moving the receiving slag tank to preset position, complete hot steel slag crushing.The application realizes the full-process automatic handling of hot steel slag, and guarantees the safety of steel slag crushing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel slag treatment, in particular to a hot-state steel slag crushing automatic control method and device. BACKGROUND

[0002] At present, hot-state steel slag needs to be sent into a steel slag crusher and the like for crushing, so as to reduce the size and facilitate subsequent processing.

[0003] In the prior art, the technical automation degree of hot-state steel slag crushing is low, generally simple and local process control, the system has weak self-diagnosis capability, lacks self-solution capability, and needs manual judgment of abnormal conditions, which is prone to safety risks and reduces system working efficiency, and the system operation has high requirements for the working experience of workers in this field, thereby indirectly increasing labor costs. SUMMARY

[0004] The problem solved by the present application is how to realize automatic crushing of hot-state steel slag.

[0005] To solve the above problems, the present application provides a hot-state steel slag crushing automatic control method and device.

[0006] In a first aspect, the present application provides a hot-state steel slag crushing automatic control method, which is applied to a roller crushing system, the roller crushing system comprising a crown block, a roller crushing sealing cover, a spraying water pump and a roller crusher connected in sequence, and the hot-state steel slag crushing automatic control method comprising:

[0007] Step S1: obtaining a to-be-processed slag pot needing to be hoisted according to the temperature and weight of each slag pot, and transporting the to-be-processed slag pot to a preset height position above the roller crushing sealing cover through the crown block;

[0008] Step S2: judging whether the roller crushing system meets a slag pouring condition according to the state of the roller crushing sealing cover, the spraying water pump and the roller crusher, and if yes, controlling the to-be-processed slag pot to pour slag through the crown block;

[0009] Step S3: judging whether the to-be-processed slag pot is finished pouring slag, and if yes, judging whether the roller crushing system meets a crushing condition;

[0010] Step S4: when the roller crushing system meets the crushing condition, controlling the roller crusher to walk;

[0011] Step S5: judging whether the roller crusher is finished walking, and if yes, starting the spraying water pump to work and controlling the spraying water amount according to the opening proportion of a water supply pipeline valve;

[0012] Step S6: When the spray water pump stops working, the steel slag is obtained and it is determined whether the temperature of the steel slag is a preset temperature and whether the particle size of the steel slag is less than a preset value;

[0013] Step S7: When the temperature is the preset temperature and the particle size is less than the preset value, it is determined whether the slag receiving tank is at a slag receiving position, and if yes, the slag is pushed and the slag receiving tank containing the steel slag is obtained;

[0014] Step S8: After the slag receiving tank is moved to a preset position, the hot steel slag crushing is completed.

[0015] Optionally, the obtaining of the to-be-processed slag tank needing to be hoisted according to the temperature and the weight of each slag tank comprises:

[0016] detecting the temperature and the weight of the slag tank;

[0017] when the temperature of the slag tank is less than a preset temperature threshold, it is determined that the slag tank does not need to be hoisted, and an abnormal slag tank signal is fed back;

[0018] when the weight of the slag tank is less than a preset weight threshold, it is determined that the slag tank does not need to be hoisted, and an abnormal slag tank signal is fed back;

[0019] when the temperature of the slag tank is greater than or equal to the preset temperature threshold and the weight of the slag tank is greater than or equal to the preset weight threshold, it is determined that the slag tank is the to-be-processed slag tank needing to be hoisted, and the crown block hoists the slag tank.

[0020] Optionally, the transporting of the to-be-processed slag tank to a preset height position above the roller crushing and sealing cover by the crown block comprises:

[0021] obtaining a preset walking speed of the crown block according to the weight of the to-be-processed slag tank;

[0022] controlling the crown block to transport the to-be-processed slag tank to the preset height position above the roller crushing and sealing cover at the preset walking speed.

[0023] Optionally, the determining of whether the roller crushing system meets the slag pouring condition according to the states of the roller crushing and sealing cover, the spray water pump and the roller crusher, and the pouring of the to-be-processed slag tank by the crown block if the roller crushing system meets the slag pouring condition, comprises:

[0024] determining whether the roller crushing and sealing cover is completely opened;

[0025] determining whether the spray water pump is completely closed;

[0026] determining whether the roller crusher is located at an initial position;

[0027] The roller crushing system meets the slag dumping condition when the roller crushing seal cover is fully opened, the spray water pump is fully closed, and the roller crusher is in the initial position; the slag dumping of the to-be-processed slag tank is controlled by the crown block.

[0028] Optionally, the determining whether the to-be-processed slag tank finishes the slag dumping includes:

[0029] determining whether the weight of the to-be-processed slag tank is reduced;

[0030] if the weight of the to-be-processed slag tank is reduced, keeping the slag dumping;

[0031] when the weight of the to-be-processed slag tank reaches a preset weight threshold, determining that the to-be-processed slag tank finishes the slag dumping.

[0032] Optionally, the determining whether the roller crushing system meets the crushing condition includes:

[0033] determining whether the roller crushing seal cover is fully closed and whether the slag receiving tank is in a preset slag receiving position;

[0034] when the roller crushing seal cover is fully closed and the slag receiving tank is in the preset slag receiving position, the roller crushing system meets the crushing condition.

[0035] Optionally, when the roller crushing system meets the crushing condition, controlling the roller crusher to walk includes:

[0036] when the roller crushing system meets the crushing condition, acquiring a walking number of the roller crusher;

[0037] when the walking number is even, controlling the crushing roller of the roller crusher to reverse;

[0038] when the walking number is odd, controlling the crushing roller of the roller crusher to rotate forward;

[0039] controlling the roller crusher to crush slag according to the walking number of the roller crusher and the forward rotation or the reverse rotation of the crushing roller.

[0040] Optionally, when the roller crusher finishes walking, starting the spray water pump to work and controlling the opening proportion of the water supply pipeline valve according to the spray water amount, includes:

[0041] when the roller crusher finishes walking, starting the spray water pump to work and controlling the opening proportion of the water supply pipeline valve, and simultaneously acquiring a flow feedback value of an outlet of the water supply pipeline;

[0042] If the flow feedback value is less than a preset flow value, the opening ratio of the water supply pipeline valve is increased;

[0043] If the flow feedback value is equal to a preset flow value, the opening ratio of the water supply pipeline valve is maintained;

[0044] If the flow feedback value is greater than a preset flow value, the opening ratio of the water supply pipeline valve is decreased.

[0045] Optionally, the hot-state steel slag crushing automatic control method further comprises:

[0046] When the temperature of the steel slag is greater than the preset temperature and the particle size of the steel slag is greater than or equal to the preset value, the steps S4 to S6 are repeated until the temperature reaches the preset temperature and the particle size is less than the preset value, and the slag pushing is performed to obtain a slag receiving tank containing the steel slag; if the temperature of the steel slag reaches the preset temperature, but the particle size of the steel slag is still greater than the preset value, only the step S4 is repeated until the particle size is less than the preset value, and the slag pushing is performed to obtain a slag receiving tank containing the steel slag.

[0047] In a second aspect, the present application provides a hot-state steel slag crushing automatic control device, which is applied to a roller crushing system, the roller crushing system comprising a crown block, a roller crushing sealing cover, a spraying water pump and a roller crusher connected in sequence, and the hot-state steel slag crushing automatic control device comprising:

[0048] A transportation unit is configured to obtain a to-be-processed slag receiving tank needing to be hoisted according to the temperature and weight of each slag receiving tank, and transport the to-be-processed slag receiving tank to a preset height position above the roller crushing sealing cover through the crown block;

[0049] A first judgment unit is configured to judge whether the roller crushing system meets a slag pouring condition according to the state of the roller crushing sealing cover, the spraying water pump and the roller crusher, and if yes, control the to-be-processed slag receiving tank to pour slag through the crown block;

[0050] A second judgment unit is configured to judge whether the to-be-processed slag receiving tank finishes pouring slag, and if yes, judge whether the roller crushing system meets a crushing condition;

[0051] A control unit is configured to control the roller crusher to walk when the roller crushing system meets the crushing condition;

[0052] A third judgment unit is configured to judge whether the roller crusher finishes walking, and if yes, start the spraying water pump to work and control the spraying water amount according to the opening ratio of a water supply pipeline valve;

[0053] The fourth judging unit is used for obtaining the steel slag and judging whether the temperature of the steel slag is a preset temperature and whether the granularity of the steel slag is less than a preset value when the spraying water pump stops working.

[0054] The pushing slag unit is used for judging whether the slag receiving tank is at a slag receiving position when the temperature is the preset temperature and the granularity is less than the preset value, and if yes, pushing the slag to obtain the slag receiving tank filled with the steel slag.

[0055] The conveying unit is used for moving the slag receiving tank to a preset position and completing the hot-state steel slag crushing.

[0056] The hot-state steel slag crushing automatic control method provided by the application detects the temperature and weight of each slag tank, selects a to-be-processed slag tank to be hoisted according to preset processing conditions, ensures that only the steel slag meeting the temperature and weight requirements is processed, and uses a crown block to hoist the to-be-processed slag tank to a preset height position above a roller crushing sealing cover. The state of the roller crushing sealing cover, the spraying water pump and the roller crusher is judged to determine whether the roller crushing system meets the slag pouring condition, and if yes, the to-be-processed slag tank is poured by controlling the crown block. Then, it is judged whether the to-be-processed slag tank is poured to the end and whether the roller crushing system meets the crushing condition, so that the pouring and crushing operations are performed under appropriate conditions, thereby improving the safety of the system. When the roller crushing system meets the crushing condition, the roller crusher is controlled to move to crush the steel slag. By automatically controlling the movement of the roller crusher, manual intervention can be reduced, thereby reducing the operation risk to a certain extent. The opening ratio of the water supply pipeline valve is controlled, so that the water quantity during the roller crushing operation is controlled, thereby improving the crushing efficiency and saving energy. After the spraying water pump stops working, it is judged whether the granularity of the steel slag is less than a preset value and whether the temperature reaches a preset temperature, and if yes, the steel slag is pushed to the slag receiving tank, so that the granularity of the steel slag is automatically controlled. By realizing automatic control, the operation is performed under appropriate conditions, so that the crushing process is more controllable and safe, manual operation is avoided and the operation risk is reduced. In addition, the automatic control also improves the production efficiency and reduces the labor intensity, further improves the working environment and safety. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 It is one of flowcharts of the hot-state steel slag crushing automatic control method.

[0058] Figure 2 It is the second flowchart of the hot-state steel slag crushing automatic control method.

[0059] Figure 3 It is the third flowchart of the hot-state steel slag crushing automatic control method.

[0060] Figure 4 Fig. 4 is a flowchart of a hot steel slag crushing automatic control method according to the present application;

[0061] Figure 5 Fig. 5 is a flowchart of a hot steel slag crushing automatic control method according to the present application;

[0062] Figure 6 Fig. 6 is a flowchart of a hot steel slag crushing automatic control method according to the present application;

[0063] Figure 7 Fig. 7 is a flowchart of a hot steel slag crushing automatic control method according to the present application;

[0064] Figure 8 Fig. 8 is a flowchart of a hot steel slag crushing automatic control method according to the present application;

[0065] Figure 9 Fig. 9 is a structural block diagram of a hot steel slag crushing automatic control device according to the present application. DETAILED DESCRIPTION

[0066] In a first aspect, in combination with Figure 1 As shown in Fig. 1, the present application provides a hot steel slag crushing automatic control method, which is applied to a roller crushing system, the roller crushing system comprising a crown block, a roller crushing seal cover, a water spraying pump and a roller crusher connected in sequence, and the hot steel slag crushing automatic control method comprising:

[0067] Step S1: obtaining a to-be-processed slag pot that needs to be hoisted according to the temperature and weight of each slag pot, and transporting the to-be-processed slag pot to a preset height position above the roller crushing seal cover through the crown block.

[0068] Specifically, whether the slag pot meets the operation condition is judged according to the temperature and weight, the walking speed of the crown block is controlled according to the weight, the slag pot temperature can be detected through a temperature measuring instrument, and the slag pot weight can be detected through a weight sensing device, for example, a temperature sensor and a weight sensor can be installed on each slag pot to monitor the temperature and weight of the slag pot in real time. The temperature sensor can be a temperature sensor directly contacting the surface of the slag pot or a non-contact infrared temperature measuring instrument. The real-time temperature data is transmitted to the central control system for judgment through a set temperature threshold. The to-be-processed slag pot that needs to be hoisted is obtained, and the to-be-processed slag pot is transported from the slag pot area to the preset height position above the roller crushing seal cover through automatic control of the operation of the crown block. The central control system controls the movement of the crown block according to the preset path and height information. In the present application, the movement of the crown block is selected and automatically controlled according to the temperature and weight of the slag pot, which can ensure that only the hot steel slag with appropriate temperature and weight is processed, and at the same time, manual operation is reduced and the safety of operation is improved.

[0069] Step S2: According to the state of the roll crushing sealing cover, the spray water pump and the roll crusher, it is judged whether the roll crushing system meets the slag dumping condition. If it meets, the crane is controlled to dump the slag in the slag tank.

[0070] Specifically, the roll crushing sealing cover is used to avoid the smoke and water produced during the roll crushing operation from scattering everywhere, and has the effects of environmental protection and safety. When the sealing cover is closed, the slag tank is in the external space and cannot dump the steel slag into the roll crushing operation space. In this embodiment, whether the roll crushing system meets the slag dumping condition is judged by detecting the state of the roll crushing sealing cover, such as whether the sealing cover is in the open state, whether it is intact, etc. The spray water pump is used to provide spray water for the roll crushing operation to cool the steel slag and accelerate the pulverization of the steel slag. Whether the roll crushing system meets the slag dumping condition is judged by detecting the working state of the spray water pump, such as whether the water pump is running, whether the valve is open and whether sufficient water is provided. The roll crusher is a device for crushing operation. Whether the roll crushing system meets the slag dumping condition is judged by monitoring the state of the roll crusher, such as whether the roll crusher is in the initial position and in the normal working state, whether the operation is stable, etc. If the roll crusher is not in the initial position, a reset operation is needed. Finally, according to the state judgment results of the above three devices and in combination with the preset slag dumping condition, whether the roll crushing system meets the slag dumping condition is judged. If it meets, the crane is automatically controlled to move the slag tank to be treated to a specified position and dump the slag. The main and auxiliary hooks of the crane are lifted, and the motor current of the main and auxiliary hooks is detected. If the current is abnormal, an alarm is given, and the manual mode is switched to be processed. If the current is normal, the main and auxiliary hooks of the crane are waited to lift the empty slag tank to a preset height above the roll crushing sealing cover. Whether the empty slag tank is lifted to the preset height above the roll crushing sealing cover is detected by the range finder. If the preset feedback signal is not obtained within 60 seconds, an alarm is given, and the manual mode is switched to be processed. If the range finder gives the preset feedback signal, the roll crushing sealing cover is closed. At the same time, after the crane continues to send the slag tank to the specified position for unloading, it waits at the next operation point. If the travel speed of the crane is abnormal and the travel current is abnormal, a fault alarm is given, and the manual mode is switched to be processed. In this way, the safety and efficiency of the whole system are improved.

[0071] Step S3: It is judged whether the slag tank to be treated is finished dumping slag. If yes, it is judged whether the roll crushing system meets the crushing condition.

[0072] Specifically, the weight of the slag ladle is checked by the crown scale device, and 60 seconds after the slag pouring starts: if the weight of the slag ladle does not decrease, an alarm is given, and the manual mode is switched to be processed; if the weight of the slag ladle decreases, normal work is carried out until the weight of the slag ladle reaches a preset value, and then the slag pouring is ended after a delay of 60 seconds. The roller press crushing seal cover proximity switch detects the fully closed state: if it is not fully closed, an alarm is given, and the process is paused; if it is fully closed, the roller press crushing operation is started, that is, the roller press crushing system meets the crushing condition.

[0073] Step S4: When the roller press crushing system meets the crushing condition, the roller press crusher is controlled to walk;

[0074] Specifically, the roller press crushing bed temperature measuring device measures the temperature of the steel slag, and if the temperature is greater than a preset value, the number of times the roller press crushing vehicle walks is determined. If the number of times is odd, the crushing roller is started in forward rotation; if the number of times is even, the crushing roller is started in reverse rotation. The roller press crushing vehicle starts to walk, and the crushing roller current is detected during walking: if the crushing roller current is greater than or equal to a preset value, the roller press crushing vehicle stops walking, and the crushing roller continues to rotate. After a preset time: if the crushing roller current is greater than or equal to a preset value, the crushing roller stops rotating, and the slag block removal mode is started. After the large slag blocks that cannot be crushed are pushed to the specified position at the front end of the crushing bed, the roller press crushing bed temperature measuring device continues to measure the temperature of the steel slag and perform subsequent steps; if the crushing roller current is less than a preset value, the roller press crushing vehicle continues to walk until the roller press crushing vehicle reaches a preset position. When the roller press crushing vehicle reaches the position, the front end proximity switch of the crushing bed sends a feedback signal in even times, and the rear end proximity switch of the crushing bed sends a feedback signal in odd times. If no feedback signal is sent, an alarm is given. The roller press crushing vehicle stops walking, the crushing roller stops rotating, and the number of times the roller press crushing vehicle walks is increased by 1 (the initial value is 0). If it does not stop, an alarm is given.

[0075] Step S5: Determine whether the roller press crusher has completed walking. If yes, start the spray water pump and control the spray water volume according to the opening ratio of the water supply pipeline valve.

[0076] Specifically, after the proximity switch sends the roller press crushing vehicle walking to position feedback signal, the spray water pump and the water supply pipeline valve are opened, and the water flow at the outlet of the water supply pipeline is detected. If the flow feedback value is less than a preset flow value, the opening ratio of the water supply pipeline valve is increased; if the flow feedback value is equal to the preset flow value, the opening ratio of the water supply pipeline valve is maintained; and if the flow feedback value is greater than the preset flow value, the opening ratio of the water supply pipeline valve is decreased.

[0077] If the spray water pump is not started, an alarm is given, and the standby spray water pump is switched. If it is still not started, an alarm is given to be processed; if it is started, the timing is started for subsequent operations.

[0078] Step S6: When the spray water pump stops working, the steel slag is obtained and it is determined whether the temperature of the steel slag is a preset temperature and whether the particle size of the steel slag is less than a preset value.

[0079] Specifically, in the present application, both the temperature and the particle size of the steel slag are considered, when the temperature and the particle size of the steel slag are both greater than preset values, the above steps S4 to S6 are repeated; when the temperature of the steel slag is less than or equal to a preset temperature and the particle size is greater than a preset value, only the above step S4 is repeated.

[0080] Step S7: When the temperature of the steel slag is equal to the preset temperature and the particle size is less than the preset value, the steel slag is pushed.

[0081] Specifically, in the present application, the temperature and the particle size of the steel slag are detected, when the temperature of the steel slag is a preset temperature and the particle size is less than a preset range, it is determined whether the number of times of walking of the roller crusher vehicle is even: even times, the roller crusher vehicle starts to walk, the roller crusher vehicle starts to walk to a position, a proximity switch sends a feedback signal, the roller crusher vehicle stops walking, and the number of times of walking of the roller crusher vehicle is increased by 1; odd times, the roller crusher vehicle directly enters a pushing operation; the proximity switch detects whether the slag receiving tank is in position: if not, an alarm is given and the process is paused; if yes, a pushing operation is started, and the slag receiving tank containing the steel slag is obtained.

[0082] Step S8: The steel slag is pushed and the slag receiving tank containing the steel slag is obtained, and after the slag receiving tank is moved to a preset position, the hot steel slag crushing is completed.

[0083] Specifically, the steel slag temperature measuring device of the slag receiving tank detects the temperature in the tank: when the temperature in the tank rises to a preset temperature, a spray pipeline switch valve of the slag receiving pit is opened, and timing is started; after the preset time, the spray pipeline switch valve is closed; if the spray pipeline switch valve is not closed after the time, an alarm is given and the process is paused; after the proximity switch confirms that the roller crusher vehicle is pushed to a position, the pushing is ended. After the pushing is ended, if the steel slag temperature measuring device of the slag receiving tank detects that the temperature in the tank has not risen to the preset temperature, an alarm is given and the process is paused; after the pushing is ended and the spray pipeline switch valve is closed, the slag receiving tank vehicle is started; if the process detects that the speed of the slag receiving tank vehicle is abnormal or the current of the vehicle is abnormal, an alarm is given and the process is paused; after the slag receiving tank vehicle is moved to a designated position, the proximity switch sends a confirmation signal: if the slag receiving tank vehicle is started and does not arrive at the designated position within a preset time, the proximity switch does not send a confirmation signal, an alarm is given and the process is paused; if it is determined that the slag receiving tank vehicle has arrived at the designated position, a hoist is started to be transported to the next process.

[0084] The hot steel slag crushing automatic control method provided by the application detects the temperature of each slag tank, selects the to-be-processed slag tank that needs to be hoisted according to the preset processing condition, ensures that only the steel slag that meets the temperature and weight requirements is processed, and uses the crown block to hoist the to-be-processed slag tank to a preset height position above the roller crushing sealing cover. The state of the roller crushing sealing cover, the spraying water pump and the roller crusher is used to determine whether the roller crushing system meets the slag pouring condition, and if the slag pouring condition is met, the to-be-processed slag tank is poured by controlling the crown block. Then, it is determined whether the to-be-processed slag tank is poured to the end and whether the roller crushing system meets the crushing condition, so as to ensure that the pouring and crushing operations are performed under appropriate conditions, thereby improving the safety of the system. When the roller crushing system meets the crushing condition, the roller crusher is controlled to move to crush the steel slag. By automatically controlling the movement of the roller crusher, manual intervention can be reduced, thereby reducing the operation risk to a certain extent. The opening ratio of the water supply pipeline valve is controlled, so as to control the water spraying amount during the roller crushing operation, thereby improving the crushing efficiency and saving energy. After the spraying water pump stops working, it is determined whether the particle size of the steel slag is less than a preset value and whether the temperature of the steel slag reaches a preset temperature. If the particle size is less than the preset value and the temperature reaches the preset temperature, the steel slag is pushed into the receiving slag tank, and the particle size of the steel slag is automatically controlled. By realizing automatic control, the operation is ensured to be performed under appropriate conditions, so that the crushing process is more controllable and safe, manual operation is avoided and the operation risk is reduced. In addition, automatic control also improves the production efficiency and reduces the labor intensity, further improves the working environment and safety.

[0085] Optionally, in combination with Figure 2 As shown, the to-be-processed slag tank that needs to be hoisted is obtained according to the temperature and weight of each slag tank, including:

[0086] detecting the temperature and weight of the slag tank;

[0087] When the temperature of the slag tank is less than a preset temperature threshold, it is determined that the slag tank does not need to be hoisted, and an abnormal slag tank signal is fed back;

[0088] When the weight of the slag tank is less than a preset weight threshold, it is determined that the slag tank does not need to be hoisted, and an abnormal slag tank signal is fed back;

[0089] When the temperature of the slag tank is greater than or equal to the preset temperature threshold, and the weight of the slag tank is greater than or equal to the preset weight threshold, it is determined that the slag tank is the to-be-processed slag tank that needs to be hoisted, and the crown block hoists the slag tank.

[0090] Specifically, the slag tank temperature and weight are detected, the detected slag tank temperature is compared with a preset temperature threshold, and the detected slag tank weight is compared with a preset weight threshold. If the temperature of the slag tank is less than the preset temperature threshold, and / or the weight of the slag tank is less than the preset weight threshold, it is determined that the slag tank does not need to be lifted, and an abnormal slag tank signal is fed back. If the temperature of the slag tank is greater than or equal to the preset temperature threshold, and the weight of the slag tank is greater than or equal to the preset weight threshold, it is determined that the slag tank is a to-be-processed slag tank that needs to be lifted. According to the determination result, a crane and the like are started to perform the lifting operation of the slag tank. It is ensured that the slag tank lifted by the crane meets the processing requirements, and the effectiveness and safety of the operation are ensured.

[0091] In the embodiment, whether the slag tank needs to be lifted can be determined according to the temperature and weight of the slag tank, and the corresponding device is started to operate when the slag tank needs to be lifted. To some extent, it is ensured that the slag tank meets the processing requirements, and the effectiveness and safety of the operation are ensured, and the production efficiency is improved.

[0092] Optionally, in combination with Figure 3 As shown, the operation of transporting the to-be-processed slag tank to a preset height position above the roller crushing and sealing cover by the crane includes:

[0093] According to the weight of the to-be-processed slag tank, a preset walking speed of the crane is obtained;

[0094] The crane is controlled to transport the to-be-processed slag tank to the preset height position above the roller crushing and sealing cover at the preset walking speed.

[0095] Specifically, after the weighing device detects the weight of the slag tank, the data is returned to the main control center. The calculation formula of the weight of the slag tank and the walking speed of the crane is as follows: first, according to the actual situation, there is a reference slag tank weight and a reference crane speed. If the weight of the slag tank is less than the reference slag tank weight, the reference crane speed + adjustment speed value (for example: if the weight of the slag tank is 10 kg lower than the reference slag weight, the reference crane speed + 0.5 m / min, which is set according to the actual production), but must be lower than the highest limited speed. According to the preset walking speed of the slag tank, the transportation safety can be improved, and the slag tank can be prevented from tipping over or the steel slag water from splashing out during the transportation process.

[0096] In the embodiment, the weight of the slag tank to be treated is determined by using a suitable weighing device or other methods; according to the weight of the slag tank to be treated, referring to the design parameters and required performance of the crown block, the preset walking speed of the crown block is calculated within a preset speed range; according to the calculated preset walking speed, the crown block is controlled to walk at the preset speed by a corresponding operating device or control system. The slag tank to be treated is moved to a preset height position above the roller crushing and sealing cover. The slag tank to be treated can be lifted to the preset height by operating the lifting device of the crown block. The preset walking speed of the crown block is determined according to the weight of the slag tank to be treated, and the slag tank is moved to the preset height position above the roller crushing and sealing cover by controlling the crown block. The accurate movement and safe treatment of the slag tank to be treated are ensured, and convenience is provided for subsequent operations.

[0097] Optionally, in combination with Figure 4 As shown, the condition of the roller crushing and sealing cover, the spray water pump and the roller crusher is determined to determine whether the roller crushing system meets the slag dumping condition, and if so, the slag tank to be treated is controlled by the crown block to dump slag, comprising:

[0098] It is determined whether the roller crushing and sealing cover is completely opened;

[0099] It is determined whether the spray water pump is completely closed;

[0100] It is determined whether the roller crusher is located at the initial position;

[0101] When the roller crushing and sealing cover is completely opened, the spray water pump is completely closed, and the roller crusher is at the initial position, the roller crushing system meets the slag dumping condition; the slag tank to be treated is controlled by the crown block to dump slag.

[0102] Specifically, by detecting the state of the roller crushing and sealing cover, such as detecting whether the sealing cover is completely opened, whether there is damage or blockage, etc., it is determined whether the roller crushing and sealing cover is completely opened. By detecting the state of the spray water pump, such as detecting whether the water pump is completely closed, whether there is water flow, etc., it is determined whether the spray water pump is completely closed. By detecting the position of the roller crusher, such as determining whether the roller crusher is located at the initial position, whether there is abnormal deviation or movement, etc., it is determined whether the roller crusher is located at the initial position. When the roller crushing and sealing cover is completely opened, the spray water pump is completely closed, and the roller crusher is at the initial position, it can be determined that the roller crushing system meets the slag dumping condition, and the slag tank to be treated is controlled by the crown block to dump slag.

[0103] In the embodiment, by judging the states of the roll crushing sealing cover, the water spraying pump and the roll crusher respectively, it can be determined whether each component meets the corresponding condition, so as to ensure that each component is in a normal working state during the slag dumping operation of the roll crushing system, and the risk and potential safety hazard of the operation are reduced. By judging whether the roll crushing system meets the slag dumping condition, the slag dumping operation under the condition of not meeting the condition can be avoided, so as to reduce the pressure and load of the equipment, reduce the probability of equipment failure, and prolong the service life of the equipment. Moreover, the operator can perform corresponding operation according to the judgment result, unnecessary waiting or wrong operation is avoided, precise control is achieved, the steel slag is prevented from being dumped outside the roll crushing sealing cover, and the efficiency and accuracy of the operation are improved.

[0104] Optionally, in combination with Figure 5 As shown in the figure, the judgment of whether the slag tank to be treated is finished with slag dumping comprises:

[0105] judging whether the weight of the slag tank to be treated is reduced;

[0106] If the weight of the slag tank to be treated is reduced, the slag dumping is kept;

[0107] When the weight of the slag tank to be treated reaches a preset weight threshold, it is judged that the slag tank to be treated is finished with slag dumping.

[0108] Specifically, the initial weight of the slag tank to be treated is obtained as a reference value; during the slag dumping process, the weight of the slag tank to be treated is detected in real time, and when the weight of the slag tank to be treated is detected to be reduced, it indicates that the material in the slag tank is being dumped or treated, and the slag dumping can be continued. When the weight of the slag tank is detected to be reduced, the slag dumping is continued and the current weight of the slag tank is recorded again, and by setting a preset weight threshold, when the weight of the slag tank to be treated reaches the threshold, it is considered that the slag tank to be treated is finished with slag dumping. In the embodiment, the preset weight threshold can be determined according to actual conditions, and may need to be adjusted according to factors such as the size of the slag tank and the properties of the material, which is not limited herein.

[0109] In the embodiment, the end of the slag dumping of the slag tank to be treated is judged by weight reduction, which is convenient and fast. In the specific operation process, only the weight of the slag tank to be treated needs to be detected in real time. Compared with other complex detection methods such as liquid level sensor or the state of the slag in the slag tank, the weight reduction is simpler and more reliable. Moreover, by detecting the weight of the slag tank to be treated in real time, the progress of the slag dumping can be understood in time. Once the weight starts to decrease, it can be immediately judged that the slag dumping is in progress, and the misjudgment and waiting time are reduced. The weight threshold can be set according to actual conditions to judge the end of the slag dumping, so as to meet the slag dumping requirements under different conditions.

[0110] Optionally, in combination with Figure 6As shown, the judgment of whether the roller crushing system meets the crushing condition comprises:

[0111] judging whether the roller crushing seal cover is completely closed and whether the slag receiving tank is at a preset slag receiving position;

[0112] When the slag receiving tank is not at the preset slag receiving position, start the slag receiving tank to move to the preset slag receiving position program;

[0113] When the roller crushing seal cover is completely closed, the roller crushing system meets the crushing condition.

[0114] Specifically, the empty slag tank is moved to a preset height using the crown block to ensure smooth movement of the slag tank and prevent displacement or tilting, ensuring safe operation. Check whether the roller crushing seal cover is completely closed to ensure that there is no obvious gap or looseness in the closed state and that the roller crushing machine can effectively isolate the inside. Here, the slag receiving tank in the slag receiving position is not a necessary condition and can not be judged whether the slag receiving tank is in the slag receiving position. In this embodiment, it is judged whether the slag receiving tank is at the preset slag receiving position, only to improve efficiency and start the slag receiving tank to move to the slag receiving position in advance to prepare for the crushing condition of the roller crushing system. Determine that the crushing condition is met; to perform subsequent operations.

[0115] In this embodiment, by checking the closing state of the roller crushing seal cover, it can be ensured that the system can effectively isolate and fix the slag during operation, prevent dust from spreading during operation, reduce the safety risk during operation, and improve the environmental friendliness during operation. By verifying the closing of the roller crushing seal cover, it can be ensured that the equipment and system are in proper condition before operation, reducing the risk caused by improper operation or equipment failure. After confirming that the slag receiving tank is located at the preset position, the next round of operation can be started in time, thereby saving waiting time and improving the efficiency of the operation. By checking the state of the roller crushing seal cover and the slag receiving tank, it can be ensured that the system is in normal working condition for crushing operation, improving the stability and reliability of the system.

[0116] Optionally, in combination with Figure 7 As shown, when the roller crushing system meets the crushing condition, the roller crushing machine is controlled to move, comprising:

[0117] When the roller crushing system meets the crushing condition, the number of movements of the roller crushing machine is obtained;

[0118] When the number of movements is even, the crushing roller of the roller crushing machine is controlled to reverse;

[0119] When the number of movements is odd, the crushing roller of the roller crushing machine is controlled to rotate forward;

[0120] According to the walking times of the roller crusher and the forward rotation or reverse rotation of the crushing roller, the roller crusher is controlled to walk.

[0121] Specifically, the roller crusher vehicle reciprocates forward-backward and backward-forward during the specific working process, the crushing roller is toothed, the crushing roller is reversed during the forward-backward movement, the crushing roller is rotated forward during the backward-forward movement, and the direction of the teeth can be exactly rolled to the steel slag. In the embodiment, the odd times and the even times are mainly used to determine the position of the roller crusher vehicle. The roller crusher vehicle is at the front end position during the even times, and the roller crusher vehicle is at the rear end position during the odd times. In addition, the slag receiving tank is at the front end position. For example, when the walking times are odd, the roller crusher vehicle is at the rear end position, and the slag pushing operation can be started at this time. The roller crusher vehicle moves from the rear to the front, and the crushed steel slag is pushed into the slag receiving tank.

[0122] In the embodiment, when the roller crusher vehicle is at the rear end position, the slag pushing operation is started, and when the roller crusher vehicle moves from the rear to the front, the crushed steel slag can be pushed into the slag receiving tank, thereby effectively saving the equipment cost and operation efficiency. In the present application, the steel slag is pushed to the slag receiving tank after the roller crushing is completed, that is, when the temperature and particle size meet the requirements. The position of the slag receiving tank is at the front end position of the roller crushing table. Therefore, only when the roller crusher vehicle is at the rear end position, the slag pushing operation can be started, and when the roller crusher vehicle moves from the rear end to the front end, the crushed steel slag can be pushed into the slag receiving tank.

[0123] Optionally, in combination with Figure 8 As shown, the roller crusher vehicle is controlled to walk, and the spraying water pump is started to work. The spraying water flow is controlled according to the opening ratio of the water supply pipeline valve, and the spraying water flow is controlled according to the opening ratio of the water supply pipeline valve.

[0124] When the roller crusher vehicle completes the walking, the spraying water pump and the water supply pipeline valve are controlled to work, and the flow feedback value of the water supply pipeline outlet is obtained.

[0125] If the flow feedback value is less than the preset flow value, the opening ratio of the water supply pipeline valve is increased.

[0126] If the flow feedback value is equal to the preset flow value, the opening ratio of the water supply pipeline valve is kept.

[0127] If the flow feedback value is greater than the preset flow value, the opening ratio of the water supply pipeline valve is reduced.

[0128] Specifically, the working of the spray water pump and the water supply pipeline valve and the acquisition of the flow feedback value are controlled: when the roller crusher completes walking, the spray water pump and the water supply pipeline valve start to work, and at the same time, the flow feedback value of the outlet of the water supply pipeline is acquired. The flow feedback value can be acquired through a flow meter, and the flow feedback value is transmitted to the central control system. The acquired flow feedback value is compared with the preset flow value. According to the flow feedback value, the opening ratio of the water supply pipeline valve is adjusted, and according to the judgment result, the corresponding adjustment is carried out, specifically including: if the flow feedback value is less than the preset flow value, the opening ratio of the water supply pipeline valve is increased to provide more water flow to the spray system. If the flow feedback value is equal to the preset flow value, the opening ratio of the water supply pipeline valve is kept unchanged. If the flow feedback value is greater than the preset flow value, the opening ratio of the water supply pipeline valve is reduced to reduce the water supply.

[0129] In the embodiment, the spray water amount of the outlet of the water supply pipeline is controlled through the opening ratio of the valve.

[0130] Optionally, the hot-state steel slag crushing automatic control method further comprises:

[0131] When the temperature of the steel slag is greater than the preset temperature and the particle size of the steel slag is greater than or equal to the preset value, the steps S4 to S6 are repeated until the temperature reaches the preset temperature and the particle size is less than the preset value, and the slag pushing is performed to obtain the slag receiving tank containing the steel slag. If the temperature of the steel slag reaches the preset temperature, but the particle size of the steel slag is still greater than the preset value, only the step S4 is repeated until the particle size is less than the preset value, and the slag pushing is performed to obtain the slag receiving tank containing the steel slag.

[0132] Specifically, the temperature and particle size of the crushed steel slag are checked, and the temperature and particle size of the steel slag are measured by using appropriate instruments or methods. The detected temperature and particle size are compared with the preset value to determine whether they are greater than or equal to the preset value. If the temperature is greater than the preset temperature and the particle size is greater than or equal to the preset value, the water crushing operation is performed. In the embodiment, the steel slag can be crushed again by using the above-mentioned method (steps S4 to S6) until the temperature reaches the preset temperature and the particle size is less than the preset value. If the temperature reaches the preset temperature first but the particle size is greater than the preset value, the steel slag can be crushed by using the above-mentioned method (step S4) until the particle size is less than the preset value. When the temperature reaches the preset temperature and the particle size is less than the preset value, the slag pushing operation is performed. The crushed steel slag is pushed into the slag receiving tank by starting the slag pushing operation. After the slag pushing operation is completed, the slag receiving tank containing the steel slag is obtained, and subsequent processing or transportation operations are performed.

[0133] In the embodiment, the inspection and operation of the particle size and temperature of the crushed steel slag can ensure that the particle size and temperature of the steel slag meet the preset requirements, and successfully push the steel slag into the slag receiving tank, so as to meet the requirements of processing the steel slag and ensure the smooth operation of the subsequent operation.

[0134] In a second aspect, in combination with Figure 9 As shown in the drawings, the present application provides a hot steel slag crushing automatic control device, which is applied to a roller crushing system, the roller crushing system comprises a crown block, a roller crushing sealing cover, a spraying water pump and a roller crusher connected in sequence, and the hot steel slag crushing automatic control device comprises:

[0135] A transport unit is configured to obtain a to-be-processed slag tank that needs to be hoisted according to the temperature and weight of each slag tank, and transport the to-be-processed slag tank to a preset height position above the roller crushing sealing cover through the crown block;

[0136] A first judgment unit is configured to judge whether the roller crushing system meets the slag pouring condition according to the state of the roller crushing sealing cover, the spraying water pump and the roller crusher, and if so, control the to-be-processed slag tank to pour slag through the crown block;

[0137] A second judgment unit is configured to judge whether the to-be-processed slag tank has finished pouring slag, and if so, judge whether the roller crushing system meets the crushing condition;

[0138] A control unit is configured to control the roller crusher to walk when the roller crushing system meets the crushing condition;

[0139] A third judgment unit is configured to judge whether the roller crusher has finished walking, and if so, start the spraying water pump and control the spraying water quantity according to the opening ratio of the water supply pipeline valve;

[0140] A fourth judgment unit is configured to obtain steel slag when the spraying water pump stops working, and judge whether the temperature of the steel slag is a preset temperature and whether the particle size of the steel slag is less than a preset value;

[0141] A slag pushing unit is configured to judge whether a slag receiving tank is at a slag receiving position when the temperature is the preset temperature and the particle size is less than the preset value, and if so, push the slag to obtain a slag receiving tank containing the steel slag;

[0142] A conveying unit is configured to move the slag receiving tank to a preset position and complete the crushing of the hot steel slag.

[0143] The hot steel slag crushing automatic control device detects the temperature and weight of each slag tank, selects the slag tank to be handled according to the preset processing condition, ensures that only the steel slag meeting the temperature and weight requirements is processed, and uses the overhead crane to transport the slag tank to be handled to the preset height position above the roller crushing sealing cover. According to the state of the roller crushing sealing cover, the spraying water pump and the roller crusher, it is judged whether the roller crushing system meets the slag pouring condition, and if the slag pouring condition is met, the slag tank to be handled is poured through the control of the overhead crane. Then it is judged whether the slag pouring of the slag tank to be handled is completed and whether the roller crushing system meets the crushing condition, so as to ensure that the slag pouring and crushing operations are carried out under appropriate conditions to improve the safety of the system. When the roller crushing system meets the crushing condition, the roller crusher is controlled to walk to crush the steel slag. By automatically controlling the walking of the roller crusher, manual intervention can be reduced, thereby reducing the operation risk to a certain extent. The opening ratio of the water supply pipeline valve is controlled to control the water volume during the roller crushing operation, thereby improving the crushing efficiency and saving energy. After the spraying water pump stops working, it is judged whether the particle size of the steel slag is less than the preset value and whether the temperature reaches the preset temperature. If the particle size is less than the preset value and the temperature reaches the preset temperature, the slag pushing operation is carried out to move the steel slag to the receiving slag tank, realizing the automatic control of the particle size of the steel slag. Through the realization of automatic control, the operation is ensured to be carried out under appropriate conditions, the crushing process is more controllable and safe, manual operation is avoided and operation risk is reduced. In addition, automatic control also improves production efficiency and reduces labor intensity, further improves the working environment and safety.

Claims

1. An automatic control method for hot steel slag crushing, characterized in that, The method is applied to a roller crushing system, which includes a crane, a roller crushing sealing cover, a spray water pump, and a roller crusher connected in sequence. The automatic control method for hot steel slag crushing includes: Step S1: Based on the temperature and weight of each slag container, determine the slag containers to be hoisted and transported to a preset height position above the roller crusher sealing cover using the overhead crane; Step S2: Based on the status of the roller crusher sealing cover, the spray water pump and the roller crusher, determine whether the roller crusher system meets the slag dumping conditions. If it does, control the slag tank to be processed to dump the slag through the overhead crane. Step S3: Determine whether the slag dumping in the slag pot has been completed; if so, determine whether the roller crushing system meets the crushing conditions. Step S4: When the roller crushing system meets the crushing conditions, control the roller crusher to move; specifically, when the roller crushing system meets the crushing conditions, obtain the number of times the roller crusher moves; When the number of walking steps is even, the crushing rollers of the roller crusher are controlled to reverse. When the number of travels is odd, the crushing roller of the roller crusher is controlled to rotate forward; wherein, even and odd numbers are used to determine the position of the roller crusher. When the number of travels is even, the roller crusher is at the front end position, and when the number of travels is odd, the roller crusher is at the rear end position. The roller crusher is controlled to crush slag based on the number of travels of the roller crusher and the forward or reverse rotation of the crushing roller. Step S5: Determine whether the roller crusher has completed its movement. If so, start the spray water pump and control the spray water volume according to the opening ratio of the water supply pipeline valve. Step S6: When the spray pump stops working, steel slag is obtained and it is determined whether the temperature of the steel slag is the preset temperature and whether the particle size of the steel slag is less than the preset value. Step S7: When the temperature is the preset temperature and the particle size is less than the preset value, determine whether the slag receiving tank is in the slag receiving position. If so, push the slag to obtain a slag receiving tank containing the steel slag. Step S8: After moving the slag receiving tank to the preset position, the hot steel slag crushing is completed.

2. The automatic control method for hot steel slag crushing according to claim 1, characterized in that, The process of determining the slag containers to be hoisted based on their temperature and weight includes: The temperature and weight of the slag pot were measured; When the temperature of the slag pot is lower than the preset temperature threshold, it is determined that the slag pot does not need to be hoisted, and an abnormal slag pot signal is fed back. When the weight of the slag pot is less than a preset weight threshold, it is determined that the slag pot does not need to be hoisted, and an abnormal slag pot signal is fed back. When the temperature of the slag container is greater than or equal to the preset temperature threshold, and the weight of the slag container is greater than or equal to the preset weight threshold, the slag container is determined to be the slag container to be processed that needs to be hoisted, and the overhead crane is started to hoist the slag container.

3. The automatic control method for hot steel slag crushing according to claim 1, characterized in that, The step of transporting the slag container to be processed to a preset height position above the roller crusher sealing cover via the overhead crane includes: The preset travel speed of the overhead crane is obtained based on the weight of the slag container to be processed. The overhead crane is controlled to transport the slag container to the preset height position above the roller crusher sealing cover at the preset travel speed.

4. The automatic control method for hot steel slag crushing according to claim 1, characterized in that, The step of determining whether the roller crushing system meets the slag dumping conditions based on the status of the roller crushing sealing cover, the spray water pump, and the roller crusher, and if so, controlling the slag tank to be processed via the overhead crane to dump the slag, includes: Determine whether the roller crusher sealing cover is fully open; Determine whether the spray pump is completely shut down; Determine whether the roller crusher is in its initial position; When the roller crusher sealing cover is fully open, the spray water pump is fully closed, and the roller crusher is in the initial position, the roller crusher system meets the slag dumping conditions; the slag dumping is carried out by controlling the slag tank to be processed through the overhead crane.

5. The automatic control method for hot steel slag crushing according to claim 1, characterized in that, The determination of whether the slag container to be processed has finished emptying includes: Determine whether the weight of the slag container to be processed has decreased; If the weight of the slag container to be processed decreases, then continue pouring slag; When the weight of the slag container to be processed reaches a preset weight threshold, it is determined that the slag discharge from the slag container has ended.

6. The automatic control method for hot steel slag crushing according to claim 4, characterized in that, The determination of whether the roller crushing system meets the crushing conditions includes: Determine whether the roller crusher sealing cover is completely closed and whether the slag receiving tank is in the preset slag receiving position; When the slag receiving tank is not in the preset slag receiving position, the program for the slag receiving tank to travel to the preset slag receiving position is started. When the roller crushing sealing cover is completely closed, the roller crushing system meets the crushing conditions.

7. The automatic control method for hot steel slag crushing according to claim 1, characterized in that, The step of determining whether the roller crusher has completed its movement, and if so, starting the spray water pump and controlling the spray water volume according to the opening ratio of the water supply pipeline valves, includes: When the roller crusher completes its travel, the spray water pump is started and the opening ratio of the water supply pipeline valve is controlled, while the flow feedback value of the water supply pipeline outlet is obtained. If the flow feedback value is less than the preset flow value, then the opening ratio of the water supply pipeline valve is increased; If the flow feedback value is equal to the preset flow value, then the opening ratio of the water supply pipeline valve is maintained; If the flow feedback value is greater than the preset flow value, then the opening ratio of the water supply pipeline valve is reduced.

8. The automatic control method for hot steel slag crushing according to claim 1, characterized in that, Also includes: When the temperature of the steel slag is greater than the preset temperature and the particle size of the steel slag is greater than or equal to the preset value, repeat steps S4 to S6 until the temperature reaches the preset temperature and the particle size is less than the preset value, then push the slag to obtain a slag receiving tank containing the steel slag; if the temperature of the steel slag reaches the preset temperature, but the particle size of the steel slag is still greater than the preset value, then repeat only step S4 until the particle size is less than the preset value, then push the slag to obtain a slag receiving tank containing the steel slag.

9. An automatic control device for hot steel slag crushing, characterized in that, The device is applied to a roller crushing system, which includes a crane, a roller crushing sealing cover, a spray water pump, and a roller crusher connected in sequence. The automatic control device for hot steel slag crushing includes: Transportation unit: used to determine the slag cans to be hoisted based on the temperature and weight of each slag can, and to transport the slag cans to a preset height position above the roller crusher sealing cover via the overhead crane; First judgment unit: used to determine whether the roller crushing system meets the slag dumping conditions based on the status of the roller crushing sealing cover, the spray water pump and the roller crusher. If it meets the conditions, the overhead crane controls the slag tank to be processed to dump the slag. Second judgment unit: determines whether the slag tank to be processed has finished emptying; if so, determines whether the roller crushing system meets the crushing conditions; Control unit: used to control the roller crusher to move when the roller crushing system meets the crushing conditions; specifically including: when the roller crushing system meets the crushing conditions, obtaining the number of times the roller crusher moves; When the number of walking steps is even, the crushing rollers of the roller crusher are controlled to reverse. When the number of travels is odd, the crushing roller of the roller crusher is controlled to rotate forward. Even and odd numbers are used to determine the position of the roller crusher. When the number of travels is even, the roller crusher is at the front end position. When the number of travels is odd, the roller crusher is at the rear end position. The roller crusher is controlled to crush slag based on the number of travels of the roller crusher and the forward or reverse rotation of the crushing roller. The third judgment unit is used to determine whether the roller crusher has completed its movement. If so, the spray water pump is started and the spray water volume is controlled according to the opening ratio of the water supply pipeline valve. The fourth judgment unit is used to determine whether the temperature of the steel slag is a preset temperature and whether the particle size of the steel slag is less than a preset value when the spray water pump stops working. Slag pushing unit: When the temperature is a preset temperature and the particle size is less than the preset value, it determines whether the slag receiving tank is in the slag receiving position. If so, it pushes the slag to obtain a slag receiving tank containing the steel slag. Conveying unit: used to move the slag receiving tank to a preset position to complete the hot steel slag crushing.

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