Converter feeding anti-mixing device and method

Abstract

The invention belongs to the technical field of electrical and automatic control and mechanical equipment, and particularly relates to a converter feeding anti-mixing device and method.According to the converter feeding anti-mixing device and method, a control system monitors the real-time position information of a lifting pipe in the horizontal direction and the relative position information of a material distribution opening on a Gray bus according to a code reader, and the real-time position information of the lifting pipe in the horizontal direction and the relative position information of the material distribution opening on the Gray bus are obtained; the control module is used for controlling the movement of the distribution trolley and the start and stop of the lifting driving module, so that the lifting pipe is aligned with the axis of the distribution opening, and the control module is used for controlling the start and stop of the lifting driving module after the lifting pipe is aligned with the axis of the distribution opening, so that the lifting pipe is pulled out of the distribution opening after distribution is completed without influencing the movement of the distribution trolley; and it is ensured that the lifting pipe is effectively inserted into the material distribution opening before material distribution, and material mixing caused by the fact that materials fall outside the material distribution opening during discharging is avoided. Moreover, the control system controls start and stop of the feeding belt according to the position information, monitored by the position detection module, of the lifting pipe in the vertical direction, material mixing caused by the fact that the lifting pipe does not enter a material distribution opening to extract and feed materials is avoided, and meanwhile the material distribution precision is accurately controlled.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical, automatic control and mechanical equipment, and relates to a converter charging and mixing prevention device and method. Background Art

[0002] The converter steelmaking process requires the addition of bulk materials and appropriate amounts of alloys to improve quality. To facilitate material distribution, existing silos are mostly placed close together, that is, the silo openings are set adjacent to each other. If the material is loaded in advance due to a failure of the feeding belt or the opening valve of the silo fails, causing abnormal opening and closing, mixing will occur, which will directly lead to excessive composition of molten steel, thus affecting product quality. In particular, adding too much alloy or doping with the wrong alloy in converter steelmaking will lead to excessive composition, which will cause the quality of steel to decline and affect its service life and performance. Especially in the production process of high-end special materials, alloy mixing has a more obvious impact on the composition, and will also affect the reputation and market image of the company. Summary of the invention

[0003] The main purpose of the present invention is to provide a device and method for preventing mixing of materials in converter feeding, so as to solve the problem that when the converter belt is feeding, the silo opening limit is not sensitive, the unloading leg opening of the material distribution trolley is not aligned with the silo opening, which may easily cause mixing of adjacent silos and affect the smelting composition of the converter.

[0004] The technical problem to be solved by the present invention is achieved by adopting the following technical scheme: a converter feeding and mixing prevention device, comprising a material distribution trolley, a material bin, a feeding belt, a Gray busbar, a code reader, a position detection module and a control system;

[0005] Multiple silos are arranged linearly side by side, and the silo openings are arranged adjacent to each other. A sealing plate is arranged at the upper end of the silo, and a material distribution opening communicating with the silo is arranged on the sealing plate. The Gray busbar is arranged horizontally above the sealing plate and parallel to the arrangement direction of the silos.

[0006] The material distribution trolley is located above the silo and is arranged on a track arranged along the silo arrangement direction;

[0007] The material distribution trolley includes a trolley body and a material distributor fixed on the trolley body, the material distributor includes a material discharge pipe, a lifting pipe sealedly connected to the material discharge pipe, and a lifting drive module for controlling the up and down movement of the lifting pipe, the lifting drive module is relatively fixedly arranged with respect to the material discharge pipe, the lifting pipe is vertically arranged, and the outer diameter of the lifting pipe is smaller than the inner diameter of the material distribution port;

[0008] The feeding belt is rotatably arranged on the trolley body, and the dropping point of the feeding belt is located above the entrance of the distributor;

[0009] The code reader is fixedly arranged relative to the feeding tube, and its axis is located in the longitudinal section of the lifting tube perpendicular to the Gray busbar and is arranged perpendicular to the Gray busbar, and is used to monitor the real-time position information of the lifting tube in the horizontal direction;

[0010] The position detection module is fixedly arranged relative to the feeding tube and is used to monitor the position information of the lifting tube in the vertical direction;

[0011] The control system is used to control the movement of the material distribution trolley and the start and stop of the lifting drive module according to the real-time position information of the lifting tube in the horizontal direction and the relative position information of the material distribution opening on the Gray busbar monitored by the code reader;

[0012] The control system is used to control the start and stop of the feeding belt according to the position information of the lifting tube in the vertical direction monitored by the position detection module.

[0013] Preferably, a sealing cover is provided on the outside of the lifting tube, and the outer diameter of the sealing cover is larger than the inner diameter of the material dispensing opening. By providing an annular sealing cover on the outside of the lifting tube, the gap between the lifting tube and the material dispensing opening can be sealed to prevent the material dust in the silo from flying and causing pollution.

[0014] Preferably, the feed pipe comprises an inclined pipe and a vertical pipe connected to each other;

[0015] The lifting pipe is sleeved on the outside of the vertical pipe and can move up and down, and the lifting pipe and the vertical pipe are connected by a dynamic seal;

[0016] The lifting drive module is connected to the lifting pipe, and the lifting pipe and the vertical pipe are connected by dynamic sealing, which can prevent material dust from overflowing from the gap between the lifting pipe and the vertical pipe to cause air pollution.

[0017] Preferably, the distributor further comprises a feed bin, and two feed pipes are arranged at the lower end of the feed bin;

[0018] Two material distributing ports are arranged above each silo. By arranging two material distributing pipes at the lower end of the feed silo, the speed of material distributing can be increased.

[0019] Preferably, the position detection module of the present invention includes a first position sensor and a second position sensor;

[0020] The first position sensor and the second position sensor are arranged from top to bottom and are respectively fixedly arranged relative to the feed pipe;

[0021] The first position sensor is used to monitor whether the upper end surface of the lifting tube reaches the upper preset position;

[0022] The second position sensor is used to monitor whether the upper end surface of the lifting tube reaches the lower limit preset position. The first position sensor and the second position sensor are used to monitor the relationship between the upper end surface of the lifting tube and the upper limit preset position and the lower limit preset position respectively, to ensure that the lifting tube is completely pulled out of the material distributing port after the material is distributed to avoid affecting the movement of the material distributing trolley, and to ensure that the lifting tube is effectively inserted into the material distributing port during the material distributing process to avoid material spillage and mixing.

[0023] Preferably, the lifting drive module is an electric telescopic rod or a cylinder, and the electric telescopic rod or the cylinder can be used to control the up and down movement of the lifting tube.

[0024] The present invention also discloses a converter feeding and mixing prevention method, which utilizes the converter feeding and mixing prevention device, and comprises the following steps:

[0025] The control system is used to control the material placing trolley to move along the track. During the movement of the material placing trolley, the lower end surface of the lifting pipe is located above the sealing plate.

[0026] The code reader transmits the real-time position information of the lifting tube in the horizontal direction to the control system;

[0027] When the barcode reader detects that the lifting tube reaches the corresponding position of the material outlet of the material bin that needs to be distributed on the Gray busbar, the material distribution trolley is stopped, and the lifting drive module is started at the same time to control the lifting tube to descend to the first preset position and enter the material distribution outlet;

[0028] Then stop the lifting drive module and start the feeding belt to load the material;

[0029] When the material is laid, the feeding belt is stopped, the lifting drive module is started, and the lifting tube is controlled to rise to the second preset position and come out from the material laying port;

[0030] Then stop the lifting drive module and use the control system to control the material distribution trolley to move to the next silo for material distribution.

[0031] Preferably, in the present invention, in the first preset position, the lower end surface of the lifting tube is located above the sealing plate;

[0032] In the second preset position, the lower end surface of the lifting tube is located below the sealing plate.

[0033] Preferably, a sealing cover is sleeved on the outer side of the lifting tube, and in the second preset position, the sealing cover is sealed and connected to the sealing plate. During the material distribution process, the sealing cover is sealed and connected to the sealing plate, which effectively avoids the pollution caused by the material dust overflowing from the material distribution port, and further reduces the risk of mixing.

[0034] Preferably, the speed of the uniform motion of the material distribution trolley is set to V, and when the distance between the lifting tube and the material distribution port of the material distribution bin is L, the acceleration of the deceleration of the material distribution trolley is controlled to be a, so that when the axis of the lifting tube is aligned with the axis of the material distribution port of the material distribution bin, the speed of the material distribution trolley is reduced to zero. In order to align the axis of the lifting tube with the axis of the material distribution port of the material distribution bin, the acceleration of the deceleration of the material distribution trolley can be obtained according to the speed of the uniform motion of the material distribution trolley and the distance between the lifting tube and the material distribution port of the material distribution bin, so as to accurately control the movement and stop of the material distribution trolley.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adopts Gray busbars and utilizes a code reader to monitor the real-time position information of the lifting tube in the horizontal direction, thereby realizing the detection of the continuous position of the lifting tube without blind spots, with high position detection accuracy, and being able to obtain the relative position relationship between the lifting tube and the fabric opening.

[0036] At the same time, the present invention uses the position detection module to monitor the position information of the lifting tube in the vertical direction. The control system controls the movement of the material distribution trolley and the start and stop of the lifting drive module according to the real-time position information of the lifting tube in the horizontal direction monitored by the code reader and the relative position information of the material distribution port on the Gray busbar, ensuring that the position where the material distribution trolley stops makes the lifting tube and the material distribution port axis aligned, and then controls the start and stop of the lifting drive module after the lifting tube and the material distribution port axis are aligned, ensuring that the lifting tube is pulled out from the material distribution port after the material distribution is completed, and does not affect the movement of the material distribution trolley, and ensuring that the lifting tube is effectively inserted into the material distribution port before the material distribution is completed, so as to avoid the material falling outside the material distribution port during unloading and mixing. In addition, the control system controls the start and stop of the feeding belt according to the position information of the lifting tube in the vertical direction monitored by the position detection module, so as to avoid the lifting tube not entering the material distribution port to extract and feed the material and cause mixing, and at the same time accurately control the accuracy of the material distribution.

[0037] The present invention adopts interlocking safety control. When the lifting tube does not enter the material dispensing port, material unloading cannot be realized through program setting. The material unloading condition is met only after the lifting tube enters the material dispensing port, thereby avoiding the problem of the lifting tube being stuck and the material unloading in advance to damage the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic structural diagram of the converter charging and mixing prevention device described in Embodiment 1 of the present invention;

[0039] Figure 2 It is a side view of the converter charging and mixing prevention device described in embodiment 1 of the present invention;

[0040] Figure 3 It is a side view of the converter charging and mixing prevention device described in embodiment 2 of the present invention;

[0041] In the figure, 1 is the material distribution trolley, 2 is the material bin, 3 is the feeding belt, 4 is the Gray busbar, 5 is the code reader, and 6 is the position detection module;

[0042] 100 sealing plate, 101 material opening, 200 track, 300 bracket, 400 material;

[0043] 11 trolley body, 12 material distributor;

[0044] 121 feeding pipe, 122 lifting pipe, 123 lifting drive module, 124 feeding bin;

[0045] 7 Sealing cover;

[0046] 1211 inclined pipe, 1212 vertical pipe;

[0047] 61 is a first position sensor, 62 is a second position sensor. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings.

[0049] like Figure 1 and Figure 2 As shown, a converter feeding and mixing prevention device includes a material distribution trolley 1, a silo 2, a feeding belt 3, a Gray bus 4, a code reader 5, a position detection module 6 and a control system.

[0050] Multiple silos 2 are arranged linearly and side by side, and adjacent silos 2 are close together and share the same silo wall. The silo openings of the silos 2 are opened upward, and the silo openings of the silos 2 are arranged adjacent to each other. A sealing plate 100 is provided at the upper end of the silo 2, and a material distribution port 101 communicating with the silo 2 is provided on the sealing plate 100. The Gray busbar 4 is horizontally erected above the sealing plate 100 through a bracket 300 and is parallel to the arrangement direction of the silos 2.

[0051] The material distribution trolley 1 is located above the silo 2 and is arranged on a track 200 arranged along the arrangement direction of the silo 2. The material distribution trolley 1 is provided with a motor drive system, through which the movement speed and acceleration parameters of the material distribution trolley 1 can be controlled.

[0052] The material distribution trolley 1 includes a trolley body 11 and a distributor 12 fixed on the trolley body 11, the distributor 12 includes a discharge pipe 121, a lifting pipe 122 sealedly connected to the discharge pipe 121, and a lifting drive module 123 for controlling the up and down movement of the lifting pipe 122, the lifting drive module 123 is fixedly arranged relative to the discharge pipe 121, the lifting pipe 122 is vertically arranged, and the outer diameter of the lifting pipe 122 is smaller than the inner diameter of the material distribution port 101.

[0053] The feeding belt 3 is rotatably arranged on the trolley body 11 through a roller, and the roller is driven by a motor. The dropping point of the feeding belt 3 is located above the entrance of the distributor 12.

[0054] The code reader 5 is fixedly arranged relative to the feeding tube 121, and its axis is located in the longitudinal section of the lifting tube 122 perpendicular to the Gray busbar 4 and is arranged perpendicular to the Gray busbar 4, and is used to monitor the real-time position information of the lifting tube 122 in the horizontal direction to determine the distance between the axis of the lifting tube 122 and the axis of the feeding port 101.

[0055] The position detection module 6 is fixedly arranged relative to the feed tube 121 and is used to monitor the position information of the lifting tube 122 in the vertical direction to determine the distance between the lower end surface of the lifting tube 122 and the upper end surface of the sealing plate 100 .

[0056] The control system is used to control the movement of the material distributing trolley 1 and the start and stop of the lifting drive module 123 according to the real-time horizontal position information of the lifting tube 122 monitored by the code reader 5 and the relative position information of the material distributing opening 101 on the Gray bus 4. The position information of all material distributing openings 101 is continuously input into the Gray bus 4 in advance.

[0057] The control system is used to control the start and stop of the feeding belt 3 according to the vertical position information of the lifting tube 122 monitored by the position detection module 6.

[0058] The feed pipe 121 includes an inclined pipe 1211 and a vertical pipe 1212 which are connected to each other.

[0059] The lifting tube 122 is sleeved on the outside of the vertical tube 1212 so as to be movable up and down. The lifting tube 122 and the vertical tube 1212 are connected by a dynamic seal. Specifically, a sealing ring is installed on the inner wall of the lifting tube 122 .

[0060] The lifting driving module 123 is connected to the lifting tube 122 .

[0061] In this embodiment, the distributor 12 is a three-way structure, and the distributor 12 further includes a feed bin 124. Two feed pipes 121 are arranged at the lower end of the feed bin 124. The two feed pipes 121 are arranged in a herringbone shape.

[0062] Two material distribution openings 101 are arranged above each silo 2 .

[0063] The position detection module 6 includes a first position sensor 61 and a second position sensor 62 .

[0064] The first position sensor 61 and the second position sensor 62 are arranged from top to bottom, respectively fixedly arranged relative to the feeding tube 121 and electrically connected to the control system. In this embodiment, the first position sensor 61 and the second position sensor 62 are directly mounted on the feeding tube 121. The first position sensor 61 and the second position sensor 62 can be laser displacement sensors.

[0065] The first position sensor 61 is used to monitor whether the upper end surface of the lifting tube 122 reaches the upper preset position. When the length of the lifting tube 122 is known, the position of the lower end surface of the lifting tube 122 can be determined. By setting the upper preset position, it is ensured that when the upper end surface of the lifting tube 122 reaches the upper preset position, the lower end surface of the lifting tube 122 is higher than the upper end surface of the sealing plate 100.

[0066] The second position sensor 62 is used to monitor whether the upper end surface of the lifting tube 122 reaches the lower limit preset position. Similarly, when the length of the lifting tube 122 and the thickness of the sealing plate 100 are known, by setting the lower limit preset position, it can be ensured that when the upper end surface of the lifting tube 122 reaches the lower limit preset position, the lower end surface of the lifting tube 122 is lower than the lower end surface of the sealing plate 100.

[0067] The lifting drive module 123 is an electric telescopic rod or a cylinder. The lifting drive module 123 is vertically fixed on the feeding tube 121.

[0068] A converter charging and mixing prevention method in the present invention uses the above converter charging and mixing prevention device, comprising the following steps:

[0069] The material distribution trolley 1 is controlled by a control system to move along the track 200 . During the movement of the material distribution trolley 1 , the lower end surface of the lifting tube 122 is located above the sealing plate 100 .

[0070] The code reader 5 transmits the monitored real-time position information of the lifting tube 122 in the horizontal direction to the control system.

[0071] When the barcode reader 5 detects that the lifting tube 122 reaches the corresponding position of the material distributing port 101 of the material distributing bin 2 on the Gray busbar 4, the material distributing trolley 1 is stopped, and the lifting drive module 123 is started to control the lifting tube 122 to descend to the first preset position and enter the material distributing port 101. The first preset position is the lower limit preset position.

[0072] Then the lifting drive module 123 is stopped, and the feeding belt 3 is started to feed the material 400 into the silo 2 below.

[0073] When the material is finished, the feeding belt 3 is stopped, and the lifting drive module 123 is started to control the lifting tube 122 to rise to the second preset position and escape from the material distributing port 101. The second preset position is the upper preset position.

[0074] Then the lifting drive module 123 is stopped, and the control system is used to control the material distribution trolley 1 to move to the next silo 2 for material distribution.

[0075] In the above embodiment, in the first preset position, the lower end surface of the lifting tube 122 is located above the sealing plate 100 .

[0076] In the second preset position, the lower end surface of the lifting tube 122 is located below the sealing plate 100 .

[0077] In order to achieve accurate control of the position of the material distribution trolley 1, the uniform motion speed of the material distribution trolley 1 is set to V. When the distance between the lifting tube 122 and the material distribution port 101 of the material distribution bin 2 is L, the acceleration of the deceleration of the material distribution trolley 1 is controlled to be a, so that when the lifting tube 122 is aligned with the axis of the material distribution port 101 of the material distribution bin 2, the speed of the material distribution trolley 1 is reduced to zero. That is, L=Va.

[0078] Example 2

[0079] like Figure 3 As shown, the difference from embodiment 1 is that in this embodiment, an annular sealing cover 7 is sleeved on the outer side of the lifting tube 122, and the outer diameter of the sealing cover 7 is larger than the inner diameter of the material dispensing port 101. The sealing cover 7 is made of rubber, has elasticity, and can improve the sealing performance.

[0080] In this embodiment, a sealing cover 7 is sleeved on the outer side of the lifting tube 122 , and in the second preset position, the sealing cover 7 is sealed and connected to the sealing plate 100 .

Claims

1. A converter charging and mixing prevention device, characterized in that: It includes a material distribution trolley (1), a material bin (2), a feeding belt (3), a Gray busbar (4), a code reader (5), a position detection module (6) and a control system; A plurality of silos (2) are arranged linearly side by side, the silo openings of the silos (2) are arranged adjacent to each other, a sealing plate (100) is arranged at the upper end of the silo (2), a material distribution opening (101) communicating with the silo (2) is arranged on the sealing plate (100), and the Gray busbar (4) is arranged horizontally above the sealing plate (100) and parallel to the arrangement direction of the silos (2); The material distribution trolley (1) is located above the material bin (2) and is arranged on a track (200) arranged along the arrangement direction of the material bin (2); The material distribution trolley (1) comprises a trolley body (11) and a material distributor (12) fixed on the trolley body (11); the material distributor (12) comprises a material discharge pipe (121), a lifting pipe (122) sealedly connected to the material discharge pipe (121), and a lifting drive module (123) for controlling the up and down movement of the lifting pipe (122); the lifting drive module (123) is fixedly arranged relative to the material discharge pipe (121); the lifting pipe (122) is arranged vertically; and the outer diameter of the lifting pipe (122) is smaller than the inner diameter of the material distribution port (101); The feeding belt (3) is rotatably arranged on the trolley body (11), and the dropping point of the feeding belt (3) is located above the entrance of the distributor (12); The code reader (5) is fixedly arranged relative to the feeding tube (121), and its axis is located in the longitudinal section of the lifting tube (122) perpendicular to the Gray busbar (4) and is arranged perpendicular to the Gray busbar (4), and is used to monitor the real-time position information of the lifting tube (122) in the horizontal direction; The position detection module (6) is fixedly arranged relative to the feed tube (121) and is used to monitor the position information of the lifting tube (122) in the vertical direction; The control system is used to control the movement of the material distributing trolley (1) and the start and stop of the lifting drive module (123) according to the real-time position information of the lifting tube (122) in the horizontal direction and the relative position information of the material distributing opening (101) on the Gray busbar (4) monitored by the code reader (5); The control system is used to control the start and stop of the feeding belt (3) according to the position information of the lifting tube (122) in the vertical direction monitored by the position detection module (6).

2. The converter charging and mixing prevention device according to claim 1, characterized in that: A sealing cover (7) is sleeved on the outer side of the lifting tube (122), and the outer diameter of the sealing cover (7) is larger than the inner diameter of the material dispensing port (101).

3. The converter charging and mixing prevention device according to claim 1, characterized in that: The feed pipe (121) comprises an inclined pipe (1211) and a vertical pipe (1212) connected to each other; The lifting tube (122) is sleeved on the outside of the vertical tube (1212) so as to be movable up and down, and the lifting tube (122) and the vertical tube (1212) are connected by a dynamic seal; The lifting drive module is connected to the lifting tube (122).

4. The converter charging and mixing prevention device according to claim 1, characterized in that: The distributor (12) further comprises a feed bin (124), and two feed pipes (121) are arranged at the lower end of the feed bin (124); Two material distribution openings (101) are arranged above each material bin (2).

5. The converter charging and mixing prevention device according to claim 1, characterized in that: The position detection module (6) comprises a first position sensor (61) and a second position sensor (62); The first position sensor (61) and the second position sensor (62) are arranged from top to bottom and are respectively fixedly disposed relative to the feed pipe (121); The first position sensor (61) is used to monitor whether the upper end surface of the lifting tube (122) reaches an upper preset position; The second position sensor (62) is used to monitor whether the upper end surface of the lifting tube (122) reaches a preset lower limit position.

6. The converter charging and mixing prevention device according to claim 1, characterized in that: The lifting drive module (123) is an electric telescopic rod or a cylinder.

7. A method for preventing mixing of materials during charging of a converter, using the device for preventing mixing of materials during charging of a converter according to any one of claims 1 to 6, characterized in that: The following steps are involved: The material distribution trolley (1) is controlled by a control system to move along the track (200), and during the movement of the material distribution trolley (1), the lower end surface of the lifting pipe (122) is located above the sealing plate (100); The code reader (5) transmits the monitored real-time position information of the lifting tube (122) in the horizontal direction to the control system; When the code reader (5) detects that the lifting tube (122) has reached the corresponding position of the material distributing port (101) of the material distributing bin (2) on the Gray busbar (4), the material distributing trolley (1) is stopped, and the lifting drive module (123) is started at the same time to control the lifting tube (122) to descend to the first preset position and enter the material distributing port (101); Then the lifting drive module (123) is stopped and the feeding belt (3) is started to feed the material; When the material dispensing is completed, the feeding belt (3) is stopped, the lifting drive module (123) is started, and the lifting tube (122) is controlled to rise to a second preset position and escape from the material dispensing port (101); Then, the lifting drive module (123) is stopped, and the control system is used to control the material distribution trolley (1) to move to the next material bin (2) for material distribution.

8. The converter charging and mixing prevention method according to claim 7, characterized in that: In the first preset position, the lower end surface of the lifting tube (122) is located above the sealing plate (100); In the second preset position, the lower end surface of the lifting tube (122) is located below the sealing plate (100).

9. The converter charging and mixing prevention method according to claim 7, characterized in that: A sealing cover (7) is sleeved on the outside of the lifting tube (122); in the second preset position, the sealing cover (7) is sealed and connected to the sealing plate (100).

10. The converter charging and mixing prevention method according to claim 7, characterized in that: The uniform motion speed of the material distribution trolley (1) is set to V. When the distance between the lifting tube (122) and the material distribution opening (101) of the material distribution bin (2) is L, the deceleration acceleration of the material distribution trolley (1) is controlled to be a. When the axes of the lifting tube (122) and the material distribution opening (101) of the material distribution bin (2) are aligned, the speed of the material distribution trolley (1) is reduced to zero.

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