Batching system for sintering production

Abstract

According to the batching system for sintering production, all batching scales are jointly connected with a control module, the control module is used for generating a control instruction for controlling a driver based on the batching flow deviation between the actual batching flow and the theoretical batching flow of the batching scales, and one control instruction corresponds to one group of batching scales. The discharging flow is always in a stable state, unstable discharging is avoided, and the quality of sintered ore and the production efficiency are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering material transportation, in particular to a batching system for sintering production. Background Art

[0002] As the starting point of sintering production, the batching system of the sintering plant shoulders the important responsibility of providing mixed materials for all sintering machines. Once the batching system encounters a problem, the entire sintering production process will be forced to interrupt, which will seriously affect production efficiency and economic benefits. Therefore, the calculation of the batching system must be accurate.

[0003] Sintering batching equipment mainly includes weighing sensors, speed sensors, weighing displays, equipment speed control devices, and silo material level detection equipment, etc., and is supplemented by redundant control module control systems, host computers and their supporting software to achieve accurate and stable batching control functions. Common equipment in sintering plant batching systems mainly includes core components such as drag-type batching scales, disc feeders with ordinary batching scales, and lime digesters.

[0004] During the production process, fluctuations in material viscosity, specific gravity, particle size, ambient temperature, humidity, and equipment status will have a significant impact on the accuracy of material feeding, especially the feeding accuracy of the batching scale, resulting in errors in the batching ratio, and then leading to material shortage or overload problems. When these problems occur, operators are usually required to intervene and manually control the batching scale to achieve complementarity between different batching scales to ensure the continuity and stability of the production process. However, there are many limitations to manual intervention, such as untimely adjustments and inaccurate adjustments, which will directly affect product quality and production efficiency. Utility Model Content

[0005] In order to address the deficiencies in the prior art, the utility model provides a batching system for sintering production. All batching scales of the utility model are commonly connected to a control module. The control module is used to generate a control instruction for controlling a driver based on a batching flow deviation between an actual batching flow and a theoretical batching flow of the batching scale. One control instruction corresponds to a group of batching scales, so that the material discharge flow is always in a stable state, avoiding unstable material discharge and ensuring the quality of the sintered ore and production efficiency.

[0006] The utility model adopts the following technical solution to solve the above technical problems: a batching system for sintering production, comprising a belt conveyor for conveying sintering materials and a plurality of batching scales for controlling the supply amount of sintering materials, the batching scales comprising a driver for driving the batching scales, all batching scales being commonly connected to a control module, the control module being used to generate a control instruction for controlling the driver based on a batching flow deviation between an actual batching flow and a theoretical batching flow of the batching scales, and one control instruction corresponding to a group of batching scales.

[0007] As a further optimization of the batching system for sintering production of the utility model: five groups of batching scales are provided, and the five groups of batching scales are respectively used to convey iron powder, solvent material, coke powder material, lime material and returned ore material.

[0008] As a further optimization of a batching system for sintering production according to the utility model: the batching system includes multiple anti-spill mechanisms, the anti-spill mechanisms include two anti-spill plates rotatably arranged on mounting frames on both sides of a belt conveyor, a channel for passing sintering material is formed between the two anti-spill plates, the anti-spill plates include an upper baffle plate and a lower baffle plate fixedly connected, and there is an angle between the upper baffle plate and the lower baffle plate, the lower baffle plates extend downward, and a gap is left between the lower edge of the lower baffle plate and the belt conveyor.

[0009] As a further optimization of a batching system for sintering production according to the utility model: a side of the upper baffle plate close to the channel is provided with an inwardly recessed batching buffer portion and an outwardly protruding batching guide portion in sequence along the falling direction of the sintering material. The batching buffer portion and the batching guide portion have a smooth transition. The batching buffer portion can cache part of the sintering material entering the channel, and the batching guide portion can guide the sintering material to move toward the channel.

[0010] As a further optimization of a batching system for sintering production of the utility model: a baffle plate is arranged at the lower edge of one side of the lower baffle plate close to the channel, and the thickness of the baffle plate gradually increases along the batching moving direction.

[0011] As a further optimization of the batching system for sintering production of the utility model: the width of the baffle plate gradually increases along the moving direction of the sintering material.

[0012] As a further optimization of the batching system for sintering production of the utility model: rectangular mounting plates are arranged on the mounting frames on both sides of the belt conveyor device, and the mounting plates are rotatably connected with L-shaped plates, and the L-shaped plates include a vertical portion and a horizontal portion, the vertical portion is rotatably connected to the mounting plate, the vertical portion is fixedly connected to the anti-spill plate, the horizontal portion extends back to the belt conveyor device, and the horizontal portion is connected to the mounting plate by a reset spring.

[0013] As a further optimization of the batching system for sintering production of the utility model: a connecting pipe is fixedly penetrated on the vertical part, a connecting shaft is fixedly penetrated on the mounting plate, and the connecting pipe is rotatably sleeved on the connecting shaft.

[0014] As a further optimization of the batching system for sintering production of the utility model: the part of the vertical portion facing the belt conveyor is arranged in an arc shape.

[0015] Beneficial effect: All batching scales of the utility model are commonly connected to a control module, which is used to generate a control instruction for controlling a driver based on a batching flow rate deviation between an actual batching flow rate and a theoretical batching flow rate of the batching scale. One control instruction corresponds to a group of batching scales. When a batching scale in a group of batching scales is short of material, the control module will automatically calculate the amount of shortfall and add it to the remaining batching scales in the same group with smooth material discharge, thereby realizing the automatic shortfall complementation function between different batching scales for the same type of material, so that the discharge flow rate is always in a stable state, avoiding unstable material discharge, and ensuring the quality of sintered ore and production efficiency.

[0016] A side of the upper baffle plate close to the channel is provided with an inwardly recessed ingredient buffer portion and an outwardly protruding ingredient guide portion in sequence along the falling direction of the sintering material. The ingredient buffer portion and the ingredient guide portion have a smooth transition. The ingredient buffer portion can cache part of the sintering material entering the channel, thereby reducing the impact of the sintering material on the upper baffle plate when it falls and causing wear. The ingredient guide portion can guide the sintering material to move toward the channel, thereby preventing the sintering material from adhering to the upper baffle plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection between the mounting plate and the L-shaped plate;

[0019] Figure 3 It is a schematic diagram of the anti-scattering mechanism;

[0020] Figure 4 is a schematic diagram of five groups of batching scales in a specific implementation manner;

[0021] Figure numerals: 1. batching scale, 2. reset spring, 3. belt conveyor, 4. anti-spill plate, 401. upper baffle, 402. batching buffer, 403. batching flow guide, 404. lower baffle, 405. material baffle plate, 5. mounting plate, 6. L-shaped plate, 601. vertical part, 602. horizontal part, 603. connecting pipe, 7. connecting shaft, 701. nut. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further elaborated in detail below in conjunction with specific embodiments. The parts that are not described and disclosed in detail in the following embodiments of the present invention should be understood as the prior art known or should be known to those skilled in the art, such as how the control module generates a control instruction for controlling the driver based on the batching flow deviation between the actual batching flow and the theoretical batching flow of the batching scale 1, how the control instruction regulates the batching scale 1, the model and structure of the batching scale 1, how the belt conveyor 3 transports the sintering material, and the specific structure and model of the belt conveyor 3, etc.

[0023] Example 1

[0024] A batching system for sintering production, such as Figure 1 and Figure 3 As shown, it includes a belt conveyor 3 for conveying sintering materials and several groups of batching scales 1 for controlling the supply amount of sintering materials. The batching scale 1 includes a driver for driving the batching scale 1 to move, that is, driving the motor to rotate. All batching scales 1 are connected to a control module. The control module is used to generate a control instruction for controlling the driver based on the batching flow deviation between the actual batching flow rate and the theoretical batching flow rate of the batching scale 1. One control instruction corresponds to a group of batching scales 1. When one of the batching scales 1 in a group of batching scales 1 does not discharge materials smoothly and there is a shortage of materials, the control module will automatically calculate the shortage of materials and add it to the remaining batching scales 1 in the same group with smooth discharge, thereby realizing the automatic shortage of materials between different batching scales 1 of the same material type. The automatic shortage of materials complementation function is realized, so that the discharge flow rate is always in a stable state, avoiding unstable discharge, and ensuring the quality and production efficiency of sintered ore. The batching scale 1 is provided with five groups, and the five groups of batching scales 1 are used to convey iron powder, solvent material, coke powder material, lime material and return ore material respectively. Among them, the control module can be selected from PLC, MCU or FPGA, etc., which are all existing technologies and will not be described in detail here.

[0025] like Figure 4 As shown, this system contains 116 batching scales, of which 1#~5# are disc batching scales, which mainly use mixed iron powder as raw material, 6#~9# are drag scales, which mainly use various solvents as raw materials, 10#~12# are drag scales, which mainly use various coke powders as raw materials, 13#~14# are feeder-type drag scales, which mainly use limestone as raw material, and 15#~16# are drag scales, which mainly use returned ore as raw material.

[0026] For the complementary of iron powder material shortage, set the complementary ratio of the real-time discharge amount of 1#~5# batching scales 1 respectively, and set the complementary selection of shortage in the control module. When the batching system starts, first select the batching scale 1 that needs to be complementary. For example, 1# belt scale can choose to complement 2#, 3#, 4# or 5# when it is short of material. You can also choose 2# and 3#, or 4# and 5#, or 2# and 5# at the same time. The control module automatically generates a model according to the user's choice. The automatic generation of the model here is an existing technology and will not be described in detail. It is intelligently distributed according to the amount of shortage after the shortage. For example, 1# batching The current unloading capacity of scale 1 is 100t / h, the feedback capacity is 100t / h, the shortage ratio is set to 50%, and 2# and 3# are selected to complement each other at the same time. When the unloading is abnormal, the feedback capacity of 1# batching scale 1 changes from 100t / h to 50t / h, and the shortage ratio is 50%. At this time, the control instruction distributes the shortage capacity of 1# batching scale 1 50t / h evenly to 2# batching scale 1 and 3# batching scale 1. The original 2# and 3# each add 25t / h per hour on the basis of the current unloading capacity to complete the shortage complementation. When 1# batching scale 1 resumes normal unloading, the shortage complementation function is automatically cancelled to ensure the stable unloading of the overall batching system.

[0027] For the complementary of solvent material shortage, set the complementary ratio of the real-time unloading amount of 6#~9# batching scales 1 respectively, and set the complementary selection of shortage in the control module. When the batching system is started, first select the batching scale 1 that needs to be complementary. There are certain differences between the solvent and other batching scales 1. Generally, they are used for two purposes and two for backup. For example, when 6# batching scale 1 selects 8# batching scale 1 for complementation, 8# batching scale 1 is in a shutdown state. When 6# batching scale 1 sets the shortage ratio to 50%, sets the unloading amount to 100t / h, and the feedback amount to 50t / h, the complementary program of shortage is started, and the unloading amount of the original 6# batching scale 1 is automatically set to 100t / h, which is automatically allocated to 8# batching scale 1. At the same time, the belt of 8# batching scale 1 is automatically started for batching. After a delay of 5S, 6# batching scale 1 is automatically stopped. At that time, the complementary process of solvent batching is completed to ensure the overall unloading stability of the solvent system. When 6# batching scale 1 is short of material during use, 8# batching scale 1 will automatically start and discharge material according to the shortfall amount of 6# batching scale 1. At this time, manual inspection is required to determine the specific reason for the shortfall of 6# batching scale 1. If it is an equipment problem, it needs to be shut down for processing. If a large piece is stuck, it needs to be manually removed without stopping. When 6# batching scale 1 discharges material normally, 8# batching scale 1 will automatically shut down to form a closed-loop control.

[0028] Coke powder is complementary to shortage of materials. Set the shortage complementary ratio of the real-time discharge amount of 10#~12# batching scales 1 respectively. At the same time, set the shortage complementary selection in the control module. When the batching system starts, first select the batching scale 1 that needs to be complementary. Coke powder is an important component of sintering ore blending, and its stability requirement is high. Under normal circumstances, three batching scales 1 are selected to complement each other, and 10# batching scale 1 selects 11# batching scale 1 and 12# batching scale 1 to complement each other, 11# batching scale 1 selects 10# batching scale 1 and 12# batching scale 1 to complement each other, and 12# batching scale 1 selects 10# batching scale 1 and 11# batching scale 1 to complement each other. For example, 10# batching scale 1 The current material unloading amount is 100t / h, the feedback amount is 100t / h, the material shortage ratio is set to 50%, and 11# batching scale 1 and 12# batching scale 1 are selected for complementary use. When material unloading is abnormal, the feedback amount of 10# batching scale 1 changes from 100t / h to 50t / h, and the material shortage ratio is 50%. At this time, the material shortage complementary program is started, and the material shortage amount of 10# batching scale 1, 50t / h, is evenly distributed to 11# batching scale 1 and 12# batching scale 1. The original 11# batching scale 1 and 12# batching scale 1 each add 25t / h on the basis of the current material unloading amount to complete the material shortage complementary use. When 10# batching scale 1 resumes normal material unloading, the material shortage complementary function is automatically cancelled.

[0029] Limestone shortage complementation, set the shortage complementation ratio of the real-time unloading amount of 13# batching scale 1 and 14# batching scale 1 respectively, and set the shortage complementation selection in the control module at the same time. When the batching system is started, the two batching scales 1 are complemented in real time. When the current unloading amount of 13# batching scale 1 is 100t / h and the feedback amount is 100t / h, set the shortage ratio to 50%, and select 14# batching scale 1 for complementation. When the unloading is abnormal, the feedback amount of 13# batching scale 1 changes from 100t / h to 50t / h, and the shortage ratio is 50%. At this time, the shortage complementation program is started, and the shortage amount of 13# batching scale 1 is 50t / h, which is distributed to 14# batching scale 1. The original 14# batching scale 1 adds 25t / h on the basis of the current unloading amount to complete the shortage complementation. When 13# batching scale 1 resumes normal unloading, the shortage complementation function is automatically cancelled.

[0030] For the material shortage complementation of return ore, the real-time material discharge ratio of 15# batching scale 1 and 16# batching scale 1 is set respectively, and the material shortage complementation selection is set in the control module. When the batching system is started, the batching scale 1 that needs to be complemented is selected first. There are certain differences between return ore and other batching scales 1. Generally, one is used and the other is reserved. When 15# batching scale 1 selects 16# batching scale 1 for complementation, 16# batching scale 1 is in a shutdown state. When 15# batching scale 1 sets the material shortage ratio to 50%, sets the discharge volume to 100t / h, and the feedback volume to 50t / h, the material shortage complementation program is started, and the original 15# batching scale 1 is automatically set to 100t / h for discharge, which is automatically distributed to 16# batching scale 1. At the same time, the belt of 16# batching scale 1 is automatically started for batching, and 15# batching scale 1 is automatically stopped after a delay of 5S. At that time, the return ore batching complementation process is completed.

[0031] The above is a basic implementation method of the utility model, which can be further improved, optimized and limited on the basis of the above to obtain the following embodiments:

[0032] Example 2

[0033] This embodiment is an improved solution based on the embodiment 1. Its main structure is the same as that of the embodiment 1. The improvement is as follows: Figure 2 and Figure 3 As shown, in order to prevent the sintering material from being scattered too much outside the belt conveyor 3 when falling, the batching system includes multiple anti-scattering mechanisms, which include two anti-scattering plates 4 rotatably arranged on the mounting frames on both sides of the belt conveyor 3, and a channel for passing the sintering material is formed between the two anti-scattering plates 4. When the sintering material falls, part of the sintering material will hit the anti-scattering plates 4, and the anti-scattering plates 4 will rotate, so that the opening between the two anti-scattering plates 4 is enlarged, and the anti-scattering plates 4 include an upper baffle 401 and a lower baffle 404 that are fixedly connected, and there is an angle between the upper baffle 401 and the lower baffle 404, and the lower baffle 404 extends downward and a gap is left between the lower edge of the lower baffle 404 and the belt conveyor 3, and the excess sintering material will flow out from the gap between the lower edge of the lower baffle 404 and the belt conveyor 3, so that the sintering material on the belt conveyor 3 can be transported more evenly. The opening angle between the two upper baffles 401 is greater than the opening angle between the two lower baffles 404.

[0034] The transported sintering material is relatively moist, and the falling sintering material is easy to stick to the upper baffle plate 401. At the same time, during the falling process, a certain impact will be generated on the surface of the upper baffle plate 401 close to the falling direction of the sintering material, resulting in surface wear. Therefore, the upper baffle plate 401 is close to the channel and is provided with an inwardly recessed ingredient buffer portion 402 and an outwardly protruding ingredient guide portion 403 in sequence along the falling direction of the sintering material. The ingredient buffer portion 402 and the ingredient guide portion 403 have a smooth transition. The ingredient buffer portion 402 can cache part of the sintering material entering the channel, and the ingredient guide portion 403 can guide the sintering material to move toward the channel. When the sintering material falls, due to the existence of the batch buffer 402, part of the wet sintering material will adhere to the surface of the batch buffer 402, and the batch buffer 402 is the position that is most impacted by the sintering material. Therefore, after the sintering material adheres to the inner side of the batch buffer 402, a protective layer will be formed to prevent the subsequent sintering material from directly impacting the surface of the batch buffer 402 again, but directly impacting the protective layer formed by the sintering material in the batch buffer 402, thereby reducing the wear on the upper baffle 401. When the sintering material in the batch buffer 402 accumulates to a certain amount and forms a certain thickness, it will fall off and be transported away by the belt conveyor 3, and the above actions will be repeated later.

[0035] Example 3

[0036] This embodiment is an improved solution based on the embodiment 2. Its main structure is the same as that of the embodiment 2. The improvement is as follows: Figure 2 and Figure 3 As shown, a baffle plate 405 is provided at the lower edge of the lower baffle plate 404 close to the channel, and the thickness of the baffle plate 405 gradually increases along the direction of material movement. The width of the baffle plate 405 gradually increases along the direction of sintering material movement. The falling sintering material can have a buffer when it reaches here, and gradually slides down along the direction of increasing thickness of the baffle plate 405 to the belt conveyor 3.

[0037] Example 4

[0038] This embodiment is an improved solution based on the embodiment 2. Its main structure is the same as that of the embodiment 2. The improvement is as follows: Figure 2 and Figure 3As shown, a rectangular mounting plate 5 is provided on the mounting frame on both sides of the belt conveyor 3, and the mounting plate 5 is rotatably connected with an L-shaped plate 6, and the L-shaped plate 6 includes a vertical portion 601 and a horizontal portion 602, and the vertical portion 601 is rotatably connected with the mounting plate 5, and a connecting pipe 603 is fixedly penetrated on the vertical portion 601, and a connecting shaft 7 is fixedly penetrated on the mounting plate 5, and the connecting pipe 603 is rotatably sleeved on the connecting shaft 7, and the two ends of the connecting shaft 7 are limited by nuts 701. The vertical portion 601 is fixedly connected with the anti-spill plate 4, and the part of the vertical portion 601 facing the belt conveyor 3 is set to an arc shape, which can better fit the anti-spill plate 4, and the horizontal portion 602 extends away from the belt conveyor 3, and the horizontal portion 602 is connected with the mounting plate 5 by a reset spring 2. When the anti-spill plate 4 is hit and rotated, the reset spring 2 can reset the anti-spill plate 4 to restore it to its original state. The reset spring 2 is a conventional prior art in this field, and will not be described in detail here.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A batching system for sintering production, characterized in that: The invention comprises a belt conveyor (3) for conveying sintering materials and a plurality of batching scales (1) for controlling the supply amount of the sintering materials. The batching scales (1) comprise a driver for driving the batching scales (1) to move. All batching scales (1) are connected to a control module. The control module is used to generate a control instruction for controlling the driver based on a batching flow deviation between an actual batching flow and a theoretical batching flow of the batching scales (1). One control instruction corresponds to a group of batching scales (1).

2. The batching system for sintering production according to claim 1, characterized in that: The batching scales (1) are provided with five groups, and the five groups of batching scales (1) are respectively used to transport iron powder, solvent material, coke powder material, lime material and returned ore material.

3. The batching system for sintering production according to claim 1, characterized in that: The batching system comprises a plurality of anti-scattering mechanisms, the anti-scattering mechanisms comprising two anti-scattering plates (4) rotatably arranged on mounting frames (301) on both sides of the belt conveyor (3), a channel for passing the sintering material is formed between the two anti-scattering plates (4), the anti-scattering plates comprising an upper baffle plate (401) and a lower baffle plate (404) which are fixedly connected, an angle being formed between the upper baffle plate (401) and the lower baffle plate (404), the lower baffle plates (404) extending downwards and a gap being left between the lower edge of the lower baffle plate (404) and the belt conveyor (3).

4. The batching system for sintering production according to claim 3, characterized in that: A side of the upper baffle (401) close to the channel is provided with an inwardly recessed batching buffer (402) and an outwardly protruding batching guide (403) in sequence along the falling direction of the sintering material. The batching buffer (402) and the batching guide (403) have a smooth transition. The batching buffer (402) can buffer part of the sintering material entering the channel, and the batching guide (403) can guide the sintering material to move toward the channel.

5. The batching system for sintering production according to claim 3, characterized in that: A material baffle plate (405) is provided at the lower edge of one side of the lower baffle plate (404) close to the channel, and the thickness of the material baffle plate (405) gradually increases along the direction of material movement.

6. The batching system for sintering production according to claim 5, characterized in that: The width of the material blocking plate (405) gradually increases along the moving direction of the sintering material.

7. The batching system for sintering production according to claim 3, characterized in that: A rectangular mounting plate (5) is provided on the mounting frames (301) on both sides of the belt conveyor (3); the mounting plate (5) is rotatably connected to an L-shaped plate (6); the L-shaped plate (6) comprises a vertical portion (601) and a horizontal portion (602); the vertical portion (601) is rotatably connected to the mounting plate (5); the vertical portion (601) is fixedly connected to the anti-spill plate (4); the horizontal portion (602) extends away from the belt conveyor (3); and the horizontal portion (602) is connected to the mounting plate (5) via a return spring (2).

8. The batching system for sintering production according to claim 7, characterized in that: A connecting pipe (603) is fixedly provided on the vertical portion (601), a connecting shaft (7) is fixedly provided on the mounting plate (5), and the connecting pipe (603) is rotatably sleeved on the connecting shaft (7).

9. The batching system for sintering production according to claim 7, characterized in that: The portion of the vertical portion (601) facing the belt conveyor (3) is arranged in an arc shape.

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