Bag turning and sampling device for bagged smelting raw materials
The integrated sampling device with a breaking knife and vibrating sieve system addresses the inefficiencies and safety issues of traditional sampling methods by automating the process and enhancing precision and safety in metallurgical raw material sampling.
Patent Information
- Application Number
- CN202422140637.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The existing bag-turning sampling process of smelting raw materials has problems such as low efficiency, high labor intensity, high safety risks and poor sampling accuracy, especially in steel production, the demand for sampling efficiency and accuracy is urgent.
A bag-turning sampling device for bag-filled smelting raw materials is designed, including component sampling device and particle size sampling device. The bag-breaking tool, sampling bend plate, graded screen box and vibration motor are used to realize semi-automated sampling of component samples and particle size samples. The bag-breaking tool is pierced ton of bags, and the sampled bend plate is used to control the material extraction pipe to extract the component samples, and the hierarchical screen box is used to perform screening.
It improves sampling efficiency, reduces labor intensity, ensures the safety of sampling personnel, improves sampling accuracy and representativeness, simplifies operating procedures, and reduces environmental pollution and material losses.
Smart Images
Figure CN223107341U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a bag-turning sampling device for bagged smelting raw materials, which can improve sampling efficiency and sampling accuracy, reduce the labor intensity of sampling personnel, and ensure the personal safety of sampling personnel, belonging to the field of detection technology. Background Art
[0002] The steel industry is an important pillar of my country's national economy. With the continuous advancement of low-carbon, green and intelligent manufacturing in recent years, many steel companies have achieved a transformation to short-process production. Short-process special steel production uses scrap steel, alloys and other auxiliary materials as raw materials. In order to ensure product quality, smelting raw materials other than scrap steel must undergo strict sampling and testing by the company to obtain accurate data before they can be put into production and used reasonably.
[0003] The testing of smelting raw materials includes component testing and particle size testing. The purpose of component testing is to accurately determine the chemical composition of the material, including important parameters of smelting production such as alloy element content and impurity element content. Particle size testing is to detect the proportion of various particle sizes through screening to determine whether the material meets the requirements of the smelting process. From the appearance, smelting raw materials are powdery and blocky (most of them are blocky). In order to meet national environmental protection requirements, smelting raw materials are mostly packaged and transported in nylon bags (ton bags). When entering the factory and warehousing, it is necessary to sample, prepare samples, and test the composition and particle size of the incoming materials.
[0004] The test samples of materials include component samples and particle size samples, among which the sampling standard of component samples is: the number of sampling bags for each batch of materials shall not be less than 50%, and the sampling points are the upper part, core, bottom and middle periphery of the nylon bag, among which the number of sampling bags for the core and bottom shall not exceed 25%. The sampling quantity at each point is determined according to the particle size and type of the material, ranging from 0.5kg to 8.0kg. Taking 30t (30 bags) of alloy material as an example: there are 15 sampling points, among which 4 are for the core and bottom sampling points, then, these 4 need to be sampled by turning over the bags; the number of sampling points for the upper and middle periphery is 11, and these 11 do not need to be sampled by turning over the bags.
[0005] The sampling standard for particle size samples is: the number of test bags is generally consistent with the core, so the sampling of particle size samples can be synchronized with the core and bottom bag sampling.
[0006] The acceptable particle size range of various materials is different. Taking alloy materials as an example, it is generally 10mm-70mm. The proportion of 10-70mm particle size reaches more than 90% to be qualified. Since excessive dust will affect stable smelting and bring great waste to the enterprise, the proportion of dust in smelting raw materials also needs to be tested.
[0007] At present, the sampling process for component samples is as follows: Use a forklift to lift the nylon bag, one person uses a cutter to cut open the bottom of the nylon bag, three people hold the receiving bag, and one person takes the component sample. This sampling method often has problems such as small cuts, slow sampling, or inaccurate sampling positions due to large cuts. At the same time, there is a lot of dust at the sampling site, which is harmful to the health of sampling personnel, and there is also a risk of the nylon bag falling, unable to guarantee the personal safety of sampling personnel.
[0008] The existing sampling process for particle size samples is as follows: The forklift lifts the nylon bag, and manually uses a cutter to cut open the bottom of the nylon. All the materials leak onto the laid collection cloth. Manually spread out the materials. First, use a 70mm sieve to screen out the larger materials; the remaining materials are screened in batches with a 10mm sieve. The materials on the sieve are put into bags, and the materials under the sieve are screened again with a 5mm sieve. Finally, the four kinds of materials with different particle sizes obtained are weighed to determine whether the materials are qualified. The whole process is fully manual operation, and it takes 40 - 50 minutes to complete sampling. The labor intensity is high, the sampling efficiency is low, and the dust is harmful to the health of sampling personnel.
[0009] To sum up, in the traditional bag - turning sampling process, the acquisition of component samples and particle size samples are two separate steps, which need to be completed by different equipment or manual operations. There are defects such as long operation time, high labor intensity, high sampling risk, and the consistency and representativeness of sampling are greatly affected by human factors. In modern steel production, especially in special steel smelting, improving sampling efficiency and accuracy is also one of the key links for efficient and high - quality smelting. Therefore, it is very necessary to improve the existing bag - turning sampling method. Utility Model Content
[0010] The purpose of the present utility model is to provide a bag - turning sampling device for bagged smelting raw materials aiming at the disadvantages of the existing technology, so as to improve sampling efficiency and sampling accuracy, reduce the labor intensity of sampling personnel, and ensure the personal safety of sampling personnel.
[0011] To achieve the above - mentioned purpose, the present utility model adopts the following technical solutions:
[0012] A bag - turning sampling device for bagged smelting raw materials includes a component sample sampling device. The component sample sampling device includes a receiving hopper, a blanking vertical pipe, a material - taking chute pipe, and a sampling bending plate. The receiving hopper is installed on the hopper support, and a bag - breaking cutter is installed inside the receiving hopper; the upper end of the blanking vertical pipe is connected to the receiving hopper. The material - taking chute pipe is an inclined rectangular pipe, its high - end is connected to the sampling port on the front wall of the blanking vertical pipe, and the low - end is opposite to the component sample sampling bucket. The sampling bending plate includes a vertical baffle, a sliding plate, and a pushing - pulling plate. The sliding plate is attached to the bottom plate of the material - taking chute pipe, and the two side edges of the sliding plate are slidably installed in the chute inside the material - taking chute pipe. The vertical baffle blocks the sampling port on the front wall of the blanking vertical pipe from the inside of the blanking vertical pipe, and the lower end of the vertical baffle is connected to the upper end of the sliding plate. The upper end of the pushing - pulling plate is connected to the lower end of the sliding plate.
[0013] The bagged smelting raw material turning and sampling device further includes a particle size sample sampling device. The particle size sample sampling device includes a grading sieve box and a vibration motor. The feeding end of the grading sieve box is located below the blanking vertical pipe. Inside the grading sieve box, there are an upper sieve, a middle sieve, and a lower sieve arranged in sequence from top to bottom. Below the grading sieve box, there is a sieve box support. The bottoms of the four corners of the grading sieve box are connected to the top of the sieve box support through vibration springs. At the rear of the grading sieve box, there are a middle sieve oversize chute, a lower sieve oversize chute, and a lower sieve undersize chute. The discharging ends of the middle sieve oversize chute, the lower sieve oversize chute, and the lower sieve undersize chute are respectively opposite to a qualified material receiving bag, a small particle material sampling bucket, and a powder material sampling bucket. The vibration motor is installed in the middle above the grading sieve box.
[0014] For the bagged smelting raw material turning and sampling device, flexible connections are connected to the low end of the blanking vertical pipe, and the discharging ends of the middle sieve oversize chute, the lower sieve oversize chute, and the lower sieve undersize chute. The flexible connections are flexible pipes.
[0015] For the bagged smelting raw material turning and sampling device, the particle size sample sampling device further includes a qualified material bag support. The qualified material bag support is a rectangular parallelepiped frame placed behind the grading sieve box. A qualified material receiving bag is placed inside the qualified material bag support. On the columns of the qualified material bag support, there are hooks corresponding to the handles of the qualified material receiving bag.
[0016] For the bagged smelting raw material turning and sampling device, the particle size sample sampling device further includes a rectangular moving tray and a sliding track. One end of the sliding track extends to the lower part of the qualified material receiving bag in the qualified material bag support. The moving tray is installed on the sliding track through the rollers at its bottom.
[0017] For the bagged smelting raw material turning and sampling device, the blanking vertical pipe is a square pipe. The bag-breaking tool includes a cutting knife and a tool holder. The tool holder includes four vertical sleeves, and the lower ends of the four vertical sleeves are respectively fixed at the four corners of the blanking vertical pipe. The cutting knife includes four blades and four vertical inserting rods. The lower ends of the four vertical inserting rods are respectively inserted into the four vertical sleeves. The four blades are evenly distributed around the axis of the blanking vertical pipe, and one ends of them are fixed together at the axis of the blanking vertical pipe. The lower parts of the ends of the four blades far from the axis of the blanking vertical pipe are respectively fixed to the upper ends of the four inserting rods. The upper end of each blade is an inclined cutting edge, and the end of the cutting edge far from the axis of the blanking vertical pipe inclines downward. On the side of the lower ends of the four blades close to the axis of the blanking vertical pipe, there are arc-shaped edges, and the arc-shaped edges of the four blades are all matched with the top spherical surface of a semi-sphere with a point on the axis of the blanking vertical pipe as the center of the sphere.
[0018] For the bagged smelting raw material turning and sampling device, the receiving hopper is in the shape of a frustum of a pyramid with a large top and a small bottom.
[0019] For the above-mentioned bagged smelting raw material turning bag sampling device, limiting bars are fixed on both side walls of the material taking chute, and a chute is formed between the limiting bars and the bottom plate of the material taking chute.
[0020] For the above-mentioned bagged smelting raw material turning bag sampling device, a handle is provided in the middle of the push-pull plate.
[0021] The utility model uses a bag-breaking cutter to pierce the ton bag, and uses a sampling bent plate to control the material taking chute to extract component samples, realizing semi-automation of component sample sampling. It not only greatly improves the sampling efficiency and sampling accuracy, but also reduces the labor intensity of sampling personnel and ensures the personal safety of sampling personnel.
[0022] While taking component samples, the utility model screens metallurgical raw materials by using a grading sieve box to obtain particle size samples. The whole device has a compact structure and is easy to operate, which can simplify the operation process of turning bag sampling, improve the sampling efficiency, reduce the labor cost, and at the same time reduce the loss and environmental pollution caused by multiple material handling. Description of the Drawings
[0023] The following further details the present utility model in conjunction with the drawings and specific embodiments.
[0024] Figure 1 is a schematic structural diagram (axonometric drawing) of the present utility model;
[0025] Figure 2 is a top view of the present utility model;
[0026] Figure 3 is an axonometric drawing of the sampling bent plate;
[0027] Figure 4 is the three-view drawing of the sampling bent plate, where Figure 4 (a) is the front view; Figure 4 (b) is the left view; Figure 4 (c) is the top view;
[0028] Figure 5 is a schematic structural diagram of the receiving hopper, the falling vertical pipe and the material taking chute, where Figure 5 (a) is the front view; Figure 5 (b) is the left view; Figure 5 (c) is the top view;
[0029] Figure 6 is an installation schematic diagram of the sampling bent plate, where Figure 6 (a) is the non-sampling state; Figure 6 (b) is the sampling state;
[0030] Figure 7Is an axonometric view of the bag-breaking tool (excluding the tool holder);
[0031] Figure 8 Is the three-view drawing of the bag-breaking tool (excluding the tool holder), where Figure 8 (a) is the front view; Figure 8 (b) is the left view; Figure 8 (c) is the top view.
[0032] The labels in the figure are as follows: 1. Material receiving hopper, 2. Hopper support, 3. Bag-breaking tool, 4. Sampling bent plate, 5. Material taking chute, 6. Vibration motor, 7. Classification sieve box, 8. Sieve box support, 9. Vibration spring, 10. Material dropping vertical pipe, 11. Moving tray, 12. Sliding track, 13. Oversize material chute of middle sieve mesh, 14. Qualified material bag support, 15. Oversize material chute of lower sieve mesh, 16. Vertical sleeve, 17. Chute, 18. Hook, 19. Undersize material chute of lower sieve mesh, 20. Limit bar;
[0033] 3-1. Blade, 3-2. Insert rod; 4-1. Vertical baffle, 4-2. Slide plate, 4-3. Push-pull plate, 4-4. Handle. Specific implementation mode
[0034] The utility model aims at the drawbacks of the prior art and provides an integrated sampling device with a compact structure, simple operation, high automation degree, and capable of obtaining component samples and particle size samples simultaneously.
[0035] See Figures 1 - 8 , the utility model includes a component sample sampling device and a particle size sample sampling device. The component sample sampling device mainly includes a material receiving hopper 1, a hopper support 2, a bag-breaking tool 3, a sampling bent plate 4, a material dropping vertical pipe 10 and a material taking chute 5; the particle size sample sampling device mainly includes a vibration motor 6, a classification sieve box 7 with three layers of sieve meshes installed inside, a sieve box support 8, a vibration spring 9, an oversize material chute 13 of the middle sieve mesh, an oversize material chute 15 of the lower sieve mesh, an undersize material chute 19 of the lower sieve mesh and a qualified material collection and transportation mechanism. The qualified material collection and transportation mechanism includes a qualified material bag support 14, a moving tray 11 and a sliding track 12.
[0036] The steel receiving hopper 1 is located on the steel hopper support 2. The receiving hopper 1 is in the shape of a frustum of a pyramid with a larger upper part and a smaller lower part. A blanking vertical pipe 10 is connected to its lower end. The blanking vertical pipe 10 is a square pipe. A sampling port is provided on the front wall of the blanking vertical pipe 10. The sampling port is connected to a material taking chute pipe 5. The material taking chute pipe 5 is an inclined rectangular pipe, and its end far from the blanking vertical pipe 10 slopes downward. Limit strips 20 are connected to both side walls of the material taking chute pipe 5 by bolts. A chute 17 is formed between the limit strip 20 and the bottom plate of the material taking chute pipe 5. The sampling bent plate 4 is used to sample from the bottom and middle of the ton bag. The sampling bent plate 4 is composed of three flat plates, namely a vertical baffle 4-1, a sliding plate 4-2, and a pushing and pulling plate 4-3. The sliding plate 4-2 is placed on the bottom plate of the material taking chute pipe 5. The two side edges of the sliding plate 4-2 are slidably installed in the chute 17 between the limit strip 20 and the bottom plate of the material taking chute pipe 5 and can slide along the chute 17. The vertical baffle 4-1 is a vertical plate located inside the blanking vertical pipe 10. The lower end of the vertical baffle 4-1 is connected to the upper end of the sliding plate 4-2. The width and height of the vertical baffle 4-1 are greater than the width and height of the sampling port on the front wall of the blanking vertical pipe 10. When the sliding plate 4-2 slides downward (towards the outside of the blanking vertical pipe 10) along the chute 17 to the extreme position, the vertical baffle 4-1 blocks the sampling port on the front wall of the blanking vertical pipe 10. When the sliding plate 4-2 slides upward (towards the inside of the blanking vertical pipe 10) along the chute 17 to the extreme position, the vertical baffle 4-1 opens the sampling port on the front wall of the blanking vertical pipe 10, and the metallurgical raw materials can flow from the material taking chute pipe 5 into the component sample sampling bucket. The pushing and pulling plate 4-3 is also a vertical plate, and its upper end is connected to the lower end of the sliding plate 4-2, which is used to push and pull the sliding plate 4-2. A handle 4-4 is provided in the middle of the pushing and pulling plate 4-3. A discharge flexible connection is installed at the lower discharge port of the blanking vertical pipe 10. Brake rubber wheels (not shown in the figure) are installed at the lower part of the hopper support 2 to facilitate position adjustment.
[0037] The bag-breaking cutter 3 is located in the middle of the material receiving hopper 1, directly above the vertical blanking pipe 10. The bag-breaking cutter 3 consists of a cutting knife and a knife holder. The knife holder includes four steel vertical sleeves 16, and the lower ends of the four vertical sleeves 16 are respectively fixed at the four corners of the vertical blanking pipe 10. The cutting knife includes four blades 3-1 and four vertical insertion rods 3-2. The lower ends of the four vertical insertion rods 3-2 are respectively inserted into the four vertical sleeves 16. The four blades 3-1 are evenly distributed around the axis of the vertical blanking pipe 10. One end of them is fixed together at the axis of the vertical blanking pipe 10, and the lower parts of the ends far from the axis of the vertical blanking pipe 10 are respectively fixedly connected to the upper ends of the four insertion rods 3-2. The upper end of each blade 3-1 is an inclined cutting edge, and the end of the cutting edge far from the axis of the vertical blanking pipe 10 is inclined downward. An arc-shaped edge is provided on one side of the lower ends of the four blades 3-1 close to the axis of the vertical blanking pipe 10. The arc-shaped edges of the four blades 3-1 are all matched with the top spherical surface of a semi-sphere with a point on the axis of the vertical blanking pipe 10 as the center of the sphere. The smelting raw materials in the material receiving hopper 1 first enter the semi-spherical space under the cutting knife and then fall through the vertical blanking pipe 10. This not only solves the problem of material jamming, making the bag turning and blanking smooth, but also lightens the cutting knife, facilitating the grinding of the cutting edge. In addition, by reasonably setting the dimensions of the four blades 3-1 in the cutting knife, the rapid falling of the ton bag can be used to temporarily prevent the smelting raw materials in the material receiving hopper 1 from entering the semi-spherical space under the cutting knife, creating convenient conditions for sampling the component samples. The cutting knife is inserted into the knife holder through the insertion rod 3-2, which is easy to maintain and replace.
[0038] The grading sieve box 7 is located below the vertical blanking pipe 10. An upper sieve mesh, a middle sieve mesh, and a lower sieve mesh are arranged in sequence from top to bottom inside it. The sieve mesh is of a pull-out design, which is convenient for replacement, and the sieve mesh specifications can be flexibly selected according to the material inspection standards.
[0039] A sieve box support 8 is provided below the grading sieve box 7. The bottoms of the four corners of the grading sieve box 7 are connected to the top of the sieve box support 8 through vibration springs 9. The vibration motor 6 is installed in the middle above the grading sieve box 7. A chute 13 for the oversize material of the middle sieve mesh, a chute 15 for the oversize material of the lower sieve mesh, and a chute 19 for the undersize material of the lower sieve mesh are provided at the rear of the grading sieve box 7. The metallurgical raw materials discharged from the chute 13 for the oversize material of the middle sieve mesh are qualified materials with particle sizes meeting the requirements. The materials discharged from the chute 15 for the oversize material of the lower sieve mesh are small particle materials with smaller particle sizes. The materials discharged from the chute 19 for the undersize material of the lower sieve mesh are powder materials. Since the oversize material of the upper sieve mesh is very little, no chute needs to be set. Flexible connections are installed at the outlets of the chute 13 for the oversize material of the middle sieve mesh, the chute 15 for the oversize material of the lower sieve mesh, and the chute 19 for the undersize material of the lower sieve mesh.
[0040] The power of the vibration motor 6 is 0.75 kw. The entire screening equipment weighs 1000 kg, the discharge particle size is 5-70 mm, and the screening time is 5-10 minutes.
[0041] Behind the grading screen box 7, there is a qualified material bag support 14. The qualified material bag support 14 is a cuboid frame, and a qualified material receiving bag is placed inside it, which is used to collect the qualified materials discharged from the chute 13 of the oversize materials on the middle screen. On the columns of the qualified material bag support 14, there are hooks 18 for supporting and hanging the qualified material receiving bag. The flexible connection at the outlet of the chute 13 of the oversize materials on the middle screen extends into the qualified material receiving bag. The height of the qualified material bag support 14 is determined according to the specifications of the nylon bags; according to the handle length of the nylon bags, two sets of hooks 18 are set, which are suitable for supporting and hanging common nylon bags, facilitating material receiving and packing.
[0042] Since the small particle materials and powder materials discharged from the chute 15 of the oversize materials on the lower screen and the chute 19 of the undersize materials on the lower screen are very few, they can be collected with the small particle material sampling bucket and the powder material sampling bucket.
[0043] One end of the sliding track 12 is located below the qualified material bag support 14. The moving tray 11 is installed on the sliding track 12. After the qualified material receiving bag is fixed on the qualified material bag support 14, the moving tray 11 moves along the sliding track 12 to the lower part of the qualified material receiving bag. After the qualified materials discharged from the chute 13 of the oversize materials on the middle screen are loaded into the qualified material receiving bag, the moving tray 11 is used to transport the qualified material receiving bag away.
[0044] The moving tray 11 includes a rectangular horizontal tray and rollers installed at the bottoms of the four corners of the horizontal tray. The top of the horizontal tray is made of checker plate material to prevent the nylon bag from slipping. The rollers adopt V-shaped guide rail roller bearings with small damping and are easy to drag.
[0045] The flexible connections at the lower end outlet of the blanking vertical pipe 10, and the outlets of the chute 13 of the oversize materials on the middle screen, the chute 15 of the oversize materials on the lower screen and the chute 19 of the undersize materials on the lower screen are all flexible pipes. The flexible connections can not only play a role in dust suppression and anti-spray, but also make the three parts of the component sample sampling device, the grading screen box 7 and the qualified material receiving and transporting mechanism relatively independent and can be arbitrarily combined according to needs. For example, the three parts are combined together for turnover sampling of massive materials whose components and particle sizes need to be detected; the component sample sampling device and the qualified material receiving and transporting mechanism are combined together for turnover sampling of powdery and massive materials whose particle sizes do not need to be detected; the qualified material receiving and transporting mechanism is used for turnover sampling only for core sampling.
[0046] The sampling steps of the present utility model are as follows:
[0047] a. Push the sampling bent plate 4 upwards to the limit position, open the sampling port on the front wall of the blanking vertical pipe 10, place the component sample sampling bucket under the material taking chute 5, and place the small particle material sampling bucket and the powder material sampling bucket under the outlets of the chute 15 of the oversize materials on the lower screen and the chute 19 of the undersize materials on the lower screen respectively; hang the qualified material receiving bag on the hook 18 of the qualified material bag support 14, and the moving tray 11 slides to the lower part of the qualified material receiving bag;
[0048] b. Use the forklift forks to lift the nylon bag containing the metallurgical raw materials and move it directly above the receiving hopper 1. Then control the forks to slowly lower. After the bag-breaking tool 3 pierces the nylon bag, the materials at the bottom of the nylon bag enter the receiving hopper 1 and flow into the component sample sampling bucket through the vertical feed pipe 10 and the material-taking chute 5 (at this time, some materials will also flow into the grading screen box 7);
[0049] c. When the materials flowing into the component sample sampling bucket reach the set amount, control the forks to immediately lower, and use the nylon bag to block the top inlet of the vertical feed pipe 10 to prevent the materials in the receiving hopper 1 from flowing out, thus completing the bottom sampling;
[0050] d. Pull the sampling bent plate 4 down to the limit position. The vertical baffle 4-1 blocks the sampling port on the front wall of the vertical feed pipe 10. Start the vibrating motor 6 and slowly lift the forks until the materials in the nylon bag flow out evenly through the receiving hopper 1 and the vertical feed pipe 10 into the grading screen box 7. The materials are screened by the three-layer sieve mesh in the grading screen box 7. The oversize materials on the upper sieve mesh stay on the upper sieve mesh. The oversize materials on the middle sieve mesh are discharged into the qualified material receiving bag through the oversize material chute 13 on the middle sieve mesh. The undersize materials of the oversize materials on the lower sieve mesh are discharged into the small particle material sampling bucket and the powder material sampling bucket respectively through the oversize material chute 15 on the lower sieve mesh and the undersize material chute 19 on the lower sieve mesh;
[0051] e. Observe the outflow amount of the materials in the nylon bag. When the outflow amount reaches one-third to two-thirds of the total amount, control the forks to immediately lower, and use the nylon bag to block the top inlet of the vertical feed pipe 10 to prevent the materials in the receiving hopper 1 from flowing out;
[0052] f. Push the sampling bent plate 4 up to the limit position to open the sampling port on the front wall of the vertical feed pipe 10;
[0053] g. Lift the forks to make the materials in the nylon bag flow into the component sample sampling bucket through the receiving hopper 1, the vertical feed pipe 10 and the material-taking chute 5;
[0054] h. When the materials flowing into the component sample sampling bucket reach the set amount, control the forks to immediately lower, and use the nylon bag to block the top inlet of the vertical feed pipe 10 to prevent the materials in the receiving hopper 1 from flowing out, thus completing the core sampling;
[0055] i. Pull the sampling bent plate 4 down to the limit position. The vertical baffle 4-1 blocks the sampling port on the front wall of the vertical feed pipe 10. Lift the forks until all the materials in the nylon bag flow into the grading screen box 7 through the receiving hopper 1 and the vertical feed pipe 10 and complete the screening;
[0056] j. Collect the materials in the small particle material sampling bucket, powder material sampling bucket, qualified material receiving bag, and the oversize materials on the upper sieve to obtain the required particle size samples. After all the oversize materials on the middle sieve enter the qualified material receiving bag, separate the qualified material receiving bag from the hook 18, pull out the moving tray 11 along the sliding track 12, and then transport the qualified material receiving bag away with a forklift. In this way, not only the material handling efficiency is improved, but also the safety and convenience of the entire sampling process are ensured.
[0057] After sampling is completed, the materials in the component sample sampling bucket can be subjected to component detection, and the particle size samples can be subjected to particle size detection. The particle size detection system includes an electronic platform scale, a LIMS terminal computer, and a LIMS system server. Use the electronic platform scale to weigh the masses of the materials in the small particle material sampling bucket, powder material sampling bucket, and qualified material receiving bag, as well as the weights of the oversize materials on the upper sieve, and transmit the weight data of various materials to the LIMS terminal computer. The LIMS terminal computer real-time collects the data output by the electronic platform scale, and develops an automatic data extraction and automatic judgment function for the small particle weight in the LIMS system according to the judgment logic, and can automatically judge whether the metallurgical raw materials are qualified.
[0058] Taking the ton bag alloy as an example, the mesh sizes of the three layers of sieves in the grading sieve box 7 are 70mm, 10mm, and 5mm respectively, and four particle size materials can be screened out. Those larger than 70mm are on the upper 70mm sieve, generally with a small quantity of less than 5kg, which can be manually broken and collected into the qualified material receiving bag; those between 10mm and 70mm are large quantities of materials, generally more than 900kg, and are collected into the qualified material receiving bag through the chute 13 of the oversize materials on the middle sieve; those between 5mm and 10mm are directly collected into the small particle material sampling bucket through the chute 15 of the oversize materials on the lower sieve, generally between 5 - 95kg, and those less than 5mm are directly connected to the powder material sampling bucket through the chute 19 of the undersize materials on the lower sieve, generally with a small quantity of less than 5kg. The particle size of the smelting raw materials is judged to be qualified by the ratio of the powder material and the qualified material.
[0059] Due to the adoption of the above technical solutions, the beneficial effects obtained by the present utility model are:
[0060] (1) The bag turning sampling of bulk materials can be quickly completed within 2 minutes, greatly reducing the manual labor intensity.
[0061] (2) The weighing data of the materials is uploaded to the LIMS (inspection and analysis) system, and according to the particle size judgment rules, the particle size judgment algorithm is determined to automatically judge the particle size detection results.
[0062] (3) The screening and detection of powder materials are realized.
[0063] (4) Improve the efficiency of material sampling: comprehensively simplify the sampling operation steps, increase the speed of material sampling and processing, significantly improve the operation efficiency, and reduce 130 minutes per bag compared to manual screening. At the same time, reduce labor costs, minimize multiple material transfers, and reduce losses and environmental pollution.
[0064] (5) The utility model realizes semi-automation of component sample sampling, avoiding the safety risks of manual operations.
[0065] (6) Improve the quality of material bag-turning sampling: through the utility model, ensure that each sampling can fully reflect the true composition of the material, strictly prevent material adulteration, ensure that each sampling has a high degree of representativeness, so as to obtain accurate test data and strictly control the material quality.
[0066] (7) The component sample is obtained through the sampling bent plate, realizing precise control of the sampling position. Precise sampling is carried out from the bottom and middle of the nylon bag according to the sampling standard requirements, effectively improving the work efficiency and sampling quality.
[0067] (8) The component sample and the particle size sample are obtained simultaneously, optimizing the spatial layout of the overall work process and improving the work efficiency.
Claims
1. A bagged smelting raw material turning bag sampling device, characterized in that, Comprising a component sample sampling device, the component sample sampling device includes a receiving hopper (1), a blanking vertical pipe (10), a material taking chute (5) and a sampling bent plate (4). The receiving hopper (1) is installed on a hopper support (2), and a bag breaking cutter (3) is installed inside the receiving hopper (1); the upper end of the blanking vertical pipe (10) is connected to the receiving hopper (1), the material taking chute (5) is an inclined rectangular pipe, its high end is connected to a sampling port on the front wall of the blanking vertical pipe (10), and its low end faces a component sample sampling bucket. The sampling bent plate (4) includes a vertical baffle (4-1), a sliding plate (4-2) and a push-pull plate (4-3). The sliding plate (4-2) is attached to the bottom plate of the material taking chute (5), and two sides of the sliding plate (4-2) are slidably installed in a chute (17) inside the material taking chute (5). The vertical baffle (4-1) blocks the sampling port on the front wall of the blanking vertical pipe (10) from the inside of the blanking vertical pipe (10), and the lower end of the vertical baffle (4-1) is connected to the upper end of the sliding plate (4-2). The upper end of the push-pull plate (4-3) is connected to the lower end of the sliding plate (4-2).
2. The bag turning and sampling device for bagged smelting raw materials according to claim 1, wherein, It further includes a particle size sample sampling device, the particle size sample sampling device includes a grading sieve box (7) and a vibration motor (6). The feeding end of the grading sieve box (7) is located below the blanking vertical pipe (10). Inside the grading sieve box (7), an upper sieve mesh, a middle sieve mesh and a lower sieve mesh are arranged in sequence from top to bottom. A sieve box support (8) is provided below the grading sieve box (7). The bottoms of the four corners of the grading sieve box (7) are connected to the top of the sieve box support (8) through vibration springs (9). A middle sieve mesh oversize chute (13), a lower sieve mesh oversize chute (15) and a lower sieve mesh undersize chute (19) are provided at the rear of the grading sieve box (7). The discharging ends of the middle sieve mesh oversize chute (13), the lower sieve mesh oversize chute (15) and the lower sieve mesh undersize chute (19) face a qualified material receiving bag, a small particle material sampling bucket and a powder material sampling bucket respectively. The vibration motor (6) is installed in the middle above the grading sieve box (7).
3. The bag-turning sampling device for a bagged smelting raw material according to claim 2, characterized in that, Flexible connections are connected to the low end of the blanking vertical pipe (10) and the discharging ends of the middle sieve mesh oversize chute (13), the lower sieve mesh oversize chute (15) and the lower sieve mesh undersize chute (19). The flexible connections are flexible pipes.
4. The bag turning and sampling device for bagged smelting raw materials according to claim 3, characterized in that, The particle size sample sampling device further includes a qualified material bag support (14). The qualified material bag support (14) is a cuboid frame placed behind the grading sieve box (7). A qualified material receiving bag is placed inside the qualified material bag support (14), and hooks (18) corresponding to the handles of the qualified material receiving bag are provided on the columns of the qualified material bag support (14).
5. The bag turning and sampling device for bagged smelting raw materials according to claim 4, characterized in that, The particle size sample sampling device further includes a rectangular moving tray (11) and a sliding track (12). One end of the sliding track (12) extends to the lower part of the qualified material receiving bag in the qualified material bag support (14). The moving tray (11) is installed on the sliding track (12) through rollers at its bottom.
6. A bag-turning sampling device for a bagged smelting raw material according to any one of claims 1-5, characterized in that, The blanking vertical pipe (10) is a square pipe. The bag-breaking cutter (3) includes a cutting knife and a tool holder. The tool holder includes four vertical sleeves (16). The lower ends of the four vertical sleeves (16) are respectively fixed at the four corners of the blanking vertical pipe (10). The cutting knife includes four blades (3-1) and four vertical insertion rods (3-2). The lower ends of the four vertical insertion rods (3-2) are respectively inserted into the four vertical sleeves (16). The four blades (3-1) are evenly distributed around the axis of the blanking vertical pipe (10). One ends of them are fixed together at the axis of the blanking vertical pipe (10). The lower parts of the ends of the four blades (3-1) far away from the axis of the blanking vertical pipe (10) are respectively fixedly connected with the upper ends of the four insertion rods (3-2). The upper end of each blade (3-1) is an inclined cutting edge. The end of the cutting edge far away from the axis of the blanking vertical pipe (10) inclines downward. An arc edge is provided on one side of the lower ends of the four blades (3-1) close to the axis of the blanking vertical pipe (10). The arc edges of the four blades (3-1) are all matched with the top spherical surface of a semi-sphere with a point on the axis of the blanking vertical pipe (10) as the center of the sphere.
7. A bag turning and sampling device for smelting raw materials according to claim 6, characterized in that, The material receiving hopper (1) is in the shape of a frustum of a pyramid with a large top and a small bottom.
8. A bag-turning sampling device for bagged smelting raw materials according to claim 7, characterized in that, Limit strips (20) are fixedly arranged on both side walls of the material taking chute pipe (5). A chute (17) is formed between the limit strips (20) and the bottom plate of the material taking chute pipe (5).
9. The bag-turning sampling device for bagged smelting raw materials according to claim 8, characterized in that, A handle (4-4) is arranged in the middle of the push-pull plate (4-3).