A solid waste sampler

Abstract

The application belongs to the technical field of resource recycling sampling, and particularly relates to a solid waste sampler, which comprises a butt joint pipe and a controller arranged on one side of the butt joint pipe, and further comprises two fixing cylinders, a weighing unit, a material distribution unit, a sampling and shunting unit and a sample storage unit; the two fixing cylinders are arranged on the two sides below the butt joint pipe respectively, and the weighing unit is arranged below the fixing cylinders. The application can realize accurate and targeted sampling of magnetic impurities, particle size gradation and abnormal bulk density of steel slag solid waste, effectively improve sampling representativeness, reduce sample repetition rate, save detection resources and quality inspection cost, and can realize independent partition storage of samples of different time periods and different abnormal types, complete recording of material quality fluctuation law and abnormal working condition cycle, realize quality tracing of the whole process of steel slag resource production, and be beneficial to improving the comprehensiveness and accuracy of online sampling and detection of steel slag solid waste.

Description

Technical Field

[0001] This invention belongs to the field of resource recycling sampling technology, and in particular relates to a solid waste sampler. Background Technology

[0002] Steel slag is a large amount of industrial solid waste generated during the steel smelting process. Driven by the dual-carbon policy and the development of the circular economy industry, steel slag has gradually shifted from the traditional solid waste disposal model to the high-value resource utilization model. Through fine processing steps such as crushing, magnetic separation, screening, shaping, aging and digestion, it can be used to prepare resource-based products such as recycled aggregates, cement admixtures, and roadbed filling materials.

[0003] To accurately control the processing quality of steel slag at each stage and to adjust subsequent production processes such as crushing, magnetic separation, screening, and aging in real time, it is necessary to sample and test the steel slag material. By testing key indicators such as metal impurity content, particle size distribution, packing performance, and material uniformity, we can ensure the stability of the quality of steel slag resource products and avoid defects in subsequent processing and end-use applications.

[0004] Currently, the industry mostly uses fixed-frequency timed sampling to sample processed steel slag, taking samples from the material at fixed time intervals. However, conventional timed sampling can only obtain material samples from fixed time periods. When the overall composition and other parameters of the steel slag material are stable, the parameters such as composition, particle size, and packing characteristics of steel slag samples collected from multiple time periods fluctuate little. When subsequently testing steel slag samples, repeated testing will be carried out on samples with highly similar properties, which not only increases unnecessary testing work but also raises production and quality inspection costs, resulting in unnecessary waste of resources. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a solid waste sampler that can randomly sample steel slag materials based on weight difference fluctuations within a fixed volume, thereby improving sampling representativeness and reducing unnecessary waste of testing resources.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a solid waste sampler, including a connecting pipe and a controller disposed on one side of the connecting pipe, and further including: two fixed cylinders, a weighing unit, a material distribution unit, a sampling and diversion unit and a sample storage unit;

[0007] The two fixed cylinders are respectively arranged on the lower sides of the connecting pipe, and the weighing unit is arranged below the fixed cylinder and connected to the interior of the fixed cylinder;

[0008] The material distribution unit is disposed between two fixed cylinders, and the material distribution unit distributes materials into the fixed cylinders with a fixed volume.

[0009] The sampling and diversion unit is located below the fixed cylinder and the material distribution unit, and the sampling and diversion unit is connected to the discharge end of the weighing unit.

[0010] The sample storage unit is located below the sampling and diversion unit, and the sample storage unit is used to store the material discharged by the sampling and diversion unit.

[0011] In the aforementioned solid waste sampler, the weighing unit includes a weighing hopper, a weighing gate valve, a fixed frame, multiple weighing sensors, and a support spring. The weighing hopper is slidably sleeved on the outside of the fixed cylinder and located below the fixed cylinder. A support ring is fixedly sleeved on the outer wall of the weighing hopper. The weighing gate valve is installed at the discharge end of the weighing hopper. The fixed frame is located below the weighing gate valve and is connected to the sampling diversion unit. Multiple weighing sensors are fixed on the upper surface of the fixed frame and are evenly distributed circumferentially about the axis of the weighing hopper. The detection end of each weighing sensor is in contact with the bottom of the support ring. Multiple sliding rods are fixed to the bottom of the support ring, and the sliding rods slide through the surface of the fixed frame. The support spring is fixed between the fixed frame and the support ring.

[0012] In the aforementioned solid waste sampler, the material distribution unit includes a distribution cylinder, a storage hopper, a rotating roller, a swing drive mechanism, an annular retaining sleeve, two material troughs, and two rectangular discharge pipes. The distribution cylinder is positioned between two fixed cylinders. The storage hopper is fixedly inserted into the top of the distribution cylinder, and the connecting pipe is fixedly inserted into the top of the storage hopper. The rotating roller is coaxially positioned inside the distribution cylinder. The swing drive mechanism is installed on the side wall of the distribution cylinder and drives the rotating roller to reciprocate. The annular retaining sleeve is fixedly fitted onto the outside of the rotating roller. The two material troughs are fixedly inserted into the side wall of the annular retaining sleeve. The two rectangular discharge pipes are symmetrically inserted into both sides of the distribution cylinder. The rotating roller, through the annular retaining sleeve, drives the material troughs to pass through the discharge end of the storage hopper and the inlet end of the corresponding rectangular discharge pipe. The rectangular discharge pipes are equipped with a magnetic attraction detection mechanism.

[0013] In the aforementioned solid waste sampler, the oscillating drive mechanism includes a linear reciprocating driver, a rack, a rotating shaft, and a driven gear; the linear reciprocating driver is fixed to the outer wall of the distribution cylinder; the rack is disposed on the outer side of the distribution cylinder, and the driving end of the linear reciprocating driver drives the rack to move horizontally reciprocally; the rotating shaft is rotatably disposed on the inner side of the distribution cylinder, and the rotating shaft coaxially passes through the rotating roller; the driven gear is fixed to the end of the rotating shaft, and the rack meshes with the driven gear.

[0014] In the aforementioned solid waste sampler, the magnetic attraction detection mechanism includes multiple electromagnetic components, a mounting cover, and multiple tension sensors. The bottom of the rectangular discharge pipe has multiple grooves, the electromagnetic components are disposed inside the grooves, a connecting plate is fixed to the bottom of the electromagnetic components, and a connecting column is fixed to the bottom of the connecting plate. The mounting cover is fixed to the bottom of the rectangular discharge pipe, the electromagnetic components are disposed inside the mounting cover, a return spring is fixed between the inner wall of the mounting cover and the connecting plate, and the connecting column slides through the bottom of the mounting cover. The tension sensor is fixed to the bottom of the mounting cover, and the detection end of the tension sensor is fixedly connected to the connecting column.

[0015] In the aforementioned solid waste sampler, the sampling and diversion unit includes a three-way pipe, a discharge pipe, a sampling gate valve, and a discharge gate valve; the three-way pipe is fixedly inserted into a fixed frame, and the valve pipe of the weighing gate valve is slidably inserted into the inner side of the inlet end of the three-way pipe; the discharge pipe is fixed to the bottom of the distribution cylinder, and the fixed frame is fixedly connected to the discharge pipe; the sampling gate valve is installed inside one of the discharge ends of the three-way pipe, and the discharge gate valve is installed inside the other discharge end of the three-way pipe, with the discharge end of the valve pipe of the discharge gate valve fixedly connected to the discharge pipe.

[0016] In the aforementioned solid waste sampler, the sample storage unit includes a support plate, multiple sample storage cylinders, and a rotary drive mechanism; the support plate is rotatably sleeved on the outside of the discharge pipe; the sample storage cylinders are detachably connected to the support plate, and the sample storage cylinders are evenly distributed in a ring on the upper surface of the support plate; the rotary drive mechanism is mounted on a fixed frame, and the rotary drive mechanism drives the support plate to rotate, and when the support plate rotates, it drives the sample storage cylinders to pass through the three-way pipe and approach the discharge end of the sampling gate valve.

[0017] In the aforementioned solid waste sampler, the rotary drive mechanism includes a rotary motor, a moving gear, and a gear sleeve; the rotary motor is fixed to the top of the fixed frame; the moving gear is fixed to the end of the output shaft of the rotary motor; the gear sleeve is fixed to the top of the support plate and sleeved on the outside of the discharge pipe, and the moving gear meshes with the gear sleeve.

[0018] In the aforementioned solid waste sampler, the controller is equipped with a timing module, and the controller controls the timing module to work based on the electrical signals fed back by the weighing sensor and the tension sensor.

[0019] Compared with existing technologies, the present invention has the following advantages:

[0020] 1. This invention, through the setting of the connecting pipe, allows the entire sampling device to be installed at the discharge end of the screw feeder, facilitating online sampling on the steel slag solid waste treatment production line. The setting of the fixed cylinder, weighing unit, and material distribution unit allows for the alternating feeding of material into the two fixed cylinders using the fixed volume of the material distribution unit. The weighing unit detects the weight of the material, and based on the fluctuations in material weight, it determines whether parameters such as the composition and particle size of the steel slag material have undergone excessive changes. In conjunction with the setting of the sampling diversion unit, automatic sampling is performed when parameters such as the composition and particle size of the steel slag material exhibit excessive changes. This improves the representativeness of the sampling, reduces the high repetitiveness of steel slag solid waste samples, and minimizes the waste of subsequent testing resources.

[0021] 2. This invention, through the design of a rectangular discharge pipe, can distribute materials in conjunction with a material distribution unit, allowing steel slag particles to spread and move along the inclined pipe wall, avoiding material accumulation and layering of coarse and fine particles. Combined with a magnetic detection mechanism, it can perform relatively comprehensive magnetic induction identification of the thin-layered steel slag solid waste material, capturing locally concentrated strong magnetic iron impurities in the conveying flow, minimizing missed or false detections caused by thick material layers. This allows for relatively accurate determination of abnormal magnetic impurities in the steel slag solid waste material, and further enhances sampling representativeness by allowing sampling based on the magnetic fluctuations of the steel slag solid waste material.

[0022] 3. This invention, through its sampling unit and multiple sampling cylinders evenly distributed above the support plate, can temporarily store collected steel slag solid waste samples. Based on the detection results of the weighing sensor and the tensile sensor, it automatically stores each sample, preventing the mixing of samples from different stages from affecting the accuracy of subsequent detection. Secondly, with the addition of a timing module, it can synchronously time the sampling time and mark the collection time node of each group of samples. This facilitates the judgment of the overall quality fluctuation pattern, frequency of abnormal working conditions and fluctuation cycle of the steel slag material during continuous processing and transportation, preventing the overall judgment of steel slag solid waste from being affected by targeted sampling. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a solid waste sampler provided by the present invention;

[0024] Figure 2 This is a schematic diagram of the back structure of the dispensing cylinder provided by the present invention;

[0025] Figure 3 This is a schematic diagram of the weighing unit provided by the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the material distribution unit provided by the present invention;

[0027] Figure 5 This invention provides Figure 2 Enlarged view of the structure of section A;

[0028] Figure 6 This is a schematic diagram of the magnetic attraction detection mechanism provided by the present invention;

[0029] Figure 7 This is a connection block diagram of the controller and timing module provided by the present invention.

[0030] In the diagram: 1. Connecting pipe; 2. Controller; 3. Fixed cylinder; 4. Weighing unit; 41. Weighing hopper; 42. Weighing gate valve; 43. Fixing frame; 44. Weighing sensor; 45. Support spring; 46. Support ring; 47. Slide rod; 5. Material distribution unit; 51. Distribution cylinder; 52. Storage hopper; 53. Rotating roller; 54. Annular retaining sleeve; 55. Material trough; 56. Rectangular discharge pipe; 6. Sampling and diversion unit; 61. T-joint pipe; 62. Discharge pipe; 63. Sampling gate valve; 64. 7. Discharge gate valve; 8. Sample storage unit; 9. Support plate; 10. Sample storage cylinder; 11. Swing drive mechanism; 12. Linear reciprocating driver; 13. Rack; 14. Rotary shaft; 15. Driven gear; 16. Magnetic attraction detection mechanism; 17. Electromagnetic component; 18. Mounting cover; 19. Tension sensor; 10. Groove; 10. Connecting plate; 11. Connecting column; 12. Return spring; 13. Rotary drive mechanism; 14. Rotary motor; 15. Driven gear; 16. Gear sleeve; 17. Timing module. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] like Figure 1 As shown, a solid waste sampler includes a connecting pipe 1 and a controller 2 disposed on one side of the connecting pipe 1. The device also includes: two fixed cylinders 3, a weighing unit 4, a material distribution unit 5, a sampling diversion unit 6, and a sample storage unit 7. The two fixed cylinders 3 are respectively disposed on both sides below the connecting pipe 1. The weighing unit 4 is disposed below the fixed cylinders 3 and communicates with the interior of the fixed cylinders 3. The material distribution unit 5 is disposed between the two fixed cylinders 3 and distributes material into the fixed cylinders 3 with a fixed volume. The sampling diversion unit 6 is disposed below the fixed cylinders 3 and the material distribution unit 5 and is communicated with the discharge end of the weighing unit 4. The sample storage unit 7 is disposed below the sampling diversion unit 6 and is used to store the material discharged by the sampling diversion unit 6.

[0033] In actual sampling, this embodiment uses a fixed-volume quantitative material distribution structure in the material distribution unit 5 to ensure that the volume of steel slag material falling into the weighing unit 4 is basically consistent each time, avoiding interference from fluctuations in the incoming material flow rate on subsequent weight detection. Combined with weighing detection, it can stably capture abnormal conditions of steel slag material bulk density and particle size uniformity. For example, when the steel slag material has mixed coarse and fine particle sizes, unbalanced gradation, or is rich in light porous glass, coke impurities, or localized agglomeration of heavy metallic iron particles, the overall mass of the material under the fixed volume will deviate significantly, resulting in large weight fluctuations. Targeted sampling at this time can capture defective conditions such as poor particle size uniformity and abnormal light and heavy components, avoiding the problem that conventional timed sampling cannot identify material quality fluctuations and the problem of high sample repeatability.

[0034] like Figure 2 and Figure 3 As shown, further, in this embodiment, the weighing unit 4 includes a weighing hopper 41, a weighing gate valve 42, a fixing frame 43, multiple weighing sensors 44, and a support spring 45; the weighing hopper 41 is slidably sleeved on the outside of the fixing cylinder 3 and located below the fixing cylinder 3, and a support ring 46 is fixedly sleeved on the outer wall of the weighing hopper 41; the weighing gate valve 42 is installed at the discharge end of the weighing hopper 41; the fixing frame 43 is located below the weighing gate valve 42, and the fixing frame 43 is connected to the sampling and diversion unit 6; multiple weighing sensors 44 are all fixed on the fixing frame 45. The upper surface of the fixed frame 43 is evenly distributed around the axis of the weighing hopper 41, and the detection end of the weighing sensor 44 is in contact with the bottom of the support ring 46; multiple sliding rods 47 are fixed at the bottom of the support ring 46, and the sliding rods 47 slide through the surface of the fixed frame 43; the support spring 45 is fixed between the fixed frame 43 and the support ring 46, and at least 4 weighing sensors 44 are set under the weighing hopper 41 on one side. The sensors are pressure-type weight detection sensors with a detection accuracy of 0.5g and a range suitable for detecting 500-2000g of steel slag material at a time.

[0035] In actual sampling, this embodiment uses a circumferentially distributed structure design of the weighing sensors 44 to collect the gravity of the weighing hopper 41 and the material inside from multiple points in a balanced manner, avoiding the deviation of gravity value caused by uneven distribution of the material discharged into the weighing hopper 41. The limiting structure of the sliding rod 47 and the buffer reset structure of the support spring 45 can balance the weight of the weighing hopper 41 and the support ring 46, avoiding the continuous pressure on the detection end of the weighing sensor 44 for a long time.

[0036] like Figure 4As shown, further, in this embodiment, the material distribution unit 5 includes a distribution cylinder 51, a storage hopper 52, a rotating roller 53, a swing drive mechanism 8, an annular baffle sleeve 54, two material troughs 55, and two rectangular discharge pipes 56; the distribution cylinder 51 is disposed between two fixed cylinders 3; the storage hopper 52 is fixedly inserted into the top of the distribution cylinder 51, and the connecting pipe 1 is fixedly inserted into the top of the storage hopper 52; the rotating roller 53 is coaxially disposed on the inner side of the distribution cylinder 51; the swing drive mechanism 8 is installed on the side wall of the distribution cylinder 51 and drives the rotating roller. 53 reciprocates; an annular baffle sleeve 54 is fixedly sleeved on the outside of the rotating roller 53; two material troughs 55 are fixedly inserted into the side wall of the annular baffle sleeve 54; two rectangular discharge pipes 56 are symmetrically inserted into both sides of the distribution cylinder 51. The rotating roller 53 drives the material troughs 55 through the annular baffle sleeve 54 to pass through the discharge end of the storage hopper 52 and the inlet end of the corresponding rectangular discharge pipe 56. The rectangular discharge pipe 56 is equipped with a magnetic attraction detection mechanism 9. The fixed volume of a single material trough 55 is 800cm³, and the inclination angle of the rectangular discharge pipe 56 is set to 35°.

[0037] In actual sampling, this embodiment uses a structure design of two sets of equal volume material tanks 55 to alternately receive and discharge materials, so as to realize the continuous alternating conveying of constant volume materials, unify the volume of materials to be detected at one time from the source, avoid interference from fluctuations in the incoming material flow, and, together with the 35° inclined rectangular discharge pipe 56, allow the steel slag particles to be laid flat and rolled down in a thin layer, avoiding material accumulation, stacking and obstruction, and ensuring that the magnetic attraction detection mechanism 9 can fully contact the flowing material, so as to facilitate the magnetic attraction detection mechanism 9 to fully detect the material.

[0038] like Figure 2 and Figure 5 As shown, further, in this embodiment, the oscillating drive mechanism 8 includes a linear reciprocating drive 81, a rack 82, a rotating shaft 83, and a driven gear 84; the linear reciprocating drive 81 is fixed to the outer wall of the distribution cylinder 51; the rack 82 is disposed on the outer side of the distribution cylinder 51, and the drive end of the linear reciprocating drive 81 drives the rack 82 to move horizontally reciprocally; the rotating shaft 83 is rotatably disposed on the inner side of the distribution cylinder 51, and the rotating shaft 83 coaxially passes through the rotating roller 53; the driven gear 84 is fixed to the end of the rotating shaft 83, and the rack 82 meshes with the driven gear 84. The single reciprocating stroke of the linear reciprocating drive 81 is constant, and the driving rack 82 drives the driven gear 84 to rotate at a single angle of 120°, ensuring that the material trough 55 accurately switches between receiving and discharging positions. The linear reciprocating drive 81 includes components such as a reciprocating screw, a screw nut, a motor, bearings, and a linear groove shell.

[0039] In actual sampling, this embodiment uses the meshing transmission of rack 82 and driven gear 84 to realize the reciprocating rotation of rotating roller 53 and material trough 55 at an angle of 120°, ensuring accurate positioning when the two material troughs 55 alternately switch positions, and continuously and stably complete the equal volume quantitative feeding, providing material samples with uniform working conditions for magnetic attraction detection and weighing detection.

[0040] like Figure 6 As shown, further in this embodiment, the magnetic attraction detection mechanism 9 includes multiple electromagnetic components 91, a mounting cover 92, and multiple tension sensors 93; the bottom of the rectangular discharge tube 56 has multiple grooves 94, the electromagnetic components 91 are disposed inside the grooves 94, a connecting plate 95 is fixed to the bottom of the electromagnetic components 91, and a connecting post 96 is fixed to the bottom of the connecting plate 95; the mounting cover 92 is fixed to the bottom of the rectangular discharge tube 56, the electromagnetic components 91 are disposed inside the mounting cover 92, a return spring 97 is fixed between the inner wall of the mounting cover 92 and the connecting plate 95, and the connecting post 96 slides through the bottom of the mounting cover 92; the tension sensor 93 is fixed to the bottom of the mounting cover 92, and the detection end of the tension sensor 93 is fixedly connected to the connecting post 96; the electromagnetic components 91 are high-frequency suction cup electromagnets, which work cyclically according to a fixed cycle of energizing for 3 seconds at 1 second intervals; the detection accuracy of the tension sensor 93 is 0.01N.

[0041] In actual sampling, this embodiment changes the magnetic attraction force on the electromagnetic component 91 by the fluctuation of the amount of impurities such as magnetic iron particles in the steel slag solid waste, which ultimately causes the tension detected by the tension sensor 93 to change synchronously. Therefore, by detecting the change in tension by the tension sensor 93, the real-time fluctuation amplitude of magnetic impurities in the steel slag solid waste can be collected. When the fluctuation amplitude of the tension signal detected by the tension sensor 93 caused by magnetic impurities exceeds ±5%, sampling can be automatically performed to identify fluctuations of defects such as local iron particle enrichment and excessive magnetic impurities as much as possible.

[0042] like Figure 3 As shown, further, in this embodiment, the sampling diversion unit 6 includes a three-way pipe 61, a discharge pipe 62, a sampling gate valve 63, and a discharge gate valve 64; the three-way pipe 61 is fixedly inserted into the fixing frame 43, and the valve pipe of the weighing gate valve 42 is slidably inserted into the inner side of the feed end of the three-way pipe 61; the discharge pipe 62 is fixed to the bottom of the distribution cylinder 51, and the fixing frame 43 is fixedly connected to the discharge pipe 62; the sampling gate valve 63 is installed inside one of the discharge ends of the three-way pipe 61, and the discharge gate valve 64 is installed inside the other discharge end of the three-way pipe 61, the discharge end of the valve pipe of the discharge gate valve 64 is fixedly connected to the discharge pipe 62, and the response time of the sampling gate valve 63 and the discharge gate valve 64 is ≤0.5s.

[0043] In actual sampling, this embodiment uses the diversion structure of sampling gate valve 63 and discharge gate valve 64 at the three-way pipe 61 to quickly switch the material flow direction according to the threshold comparison result of controller 2. Under normal working conditions, the material is directly discharged into the discharge pipe 62. If the magnetic fluctuation exceeds ±5% or the weight fluctuation exceeds ±10%, controller 2 controls the sampling gate valve 63 to open, so that the material can be intercepted and sampled. Secondly, when sampling and testing are not required, controller 2 controls the sampling gate valve 63 to close, and at the same time opens the discharge gate valve 64 and the weighing gate valve 42, and the material is directly discharged into the discharge pipe 62 without interfering with the continuous feeding operation of the production line.

[0044] like Figure 2 As shown, further, in this embodiment, the sample storage unit 7 includes a support plate 71, multiple sample storage cylinders 72, and a rotary drive mechanism 10; the support plate 71 is rotatably sleeved on the outside of the discharge pipe 62; the sample storage cylinders 72 are detachably connected to the support plate 71, and the sample storage cylinders 72 are evenly distributed in a ring on the upper surface of the support plate 71; the rotary drive mechanism 10 is mounted on the fixed frame 43, and the rotary drive mechanism 10 drives the support plate 71 to rotate. When the support plate 71 rotates, it drives the sample storage cylinders 72 to pass through the three-way pipe 61 and approach the discharge end of the sampling gate valve 63. There are a total of 24 sample storage cylinders 72. The rotary drive mechanism 10 will drive the support plate 71 to rotate, so that the sample storage cylinders 72 below the sampling discharge end of the three-way pipe 61 are renewed.

[0045] In actual sampling, this embodiment uses annularly distributed independent sample storage cylinders 72 to store samples from different time periods and different abnormality types independently, avoiding sample mixing and cross-interference. With the rotary drive mechanism 10 driving the support plate 71 to rotate and switch positions, it can adapt to continuous and rapid sampling at the position of quickly switching sample storage cylinders 72.

[0046] like Figure 2 As shown, in this embodiment, the rotary drive mechanism 10 includes a rotary motor 101, a moving gear 102, and a gear sleeve 103. The rotary motor 101 is fixed to the top of the fixed frame 43. The moving gear 102 is fixed to the end of the output shaft of the rotary motor 101. The gear sleeve 103 is fixed to the top of the support plate 71 and sleeved on the outside of the discharge pipe 62. The moving gear 102 meshes with the gear sleeve 103. The rotary motor 101 is a stepper motor, and the single rotation angle accurately matches the spacing of the sample storage cylinders 72. The positioning error is ≤0.5°. A rotation angle encoder is installed at its output shaft. The support plate 71 is driven to rotate 15° in a single operation. After the support plate 71 rotates 165°, the controller 2 will sound an alarm to remind personnel to remove the sample storage cylinders 72. At least 12 sample storage cylinders 72 can store samples at a time.

[0047] In actual sampling, this embodiment uses a rotary motor 101 in conjunction with gear meshing to achieve precise switching of the sample storage cylinder 72 position. After each sampling is completed, the blank sample storage cylinder 72 can be automatically replaced, enabling continuous and non-interfering sample storage, which is suitable for the working requirements of long-term continuous online sampling and monitoring.

[0048] like Figure 7 As shown, further, in this embodiment, the controller 2 is equipped with a timing module 11. The controller 2 controls the timing module 11 to work according to the electrical signals fed back by the weighing sensor 44 and the tension sensor 93. The timing module 11 has a timing accuracy of 0.1s and can record the interval between two samplings. In addition, the sample storage cylinder 72 is numbered. After each sampling, the controller 2 will record the timing time of the corresponding numbered sample storage cylinder 72 and the timing module 11.

[0049] During actual sampling, this embodiment uses the timing module 11 to perform continuous sampling timing for the corresponding numbered sample storage cylinder 72 after each sampling. For example, if the next sampling is performed after an interval of 5 minutes, the sample storage cylinder 72 represents the parameters of the steel slag solid waste material within 5 minutes after its sampling, preventing the overall performance judgment of the steel slag solid waste material from being affected by only sampling the steel slag solid waste material.

[0050] The operation process of the present invention is as follows: the connecting pipe 1 is installed at the discharge end of the screw feeder. At this time, the steel slag solid waste material will enter the storage hopper 52 through the connecting pipe 1, and some material will fill the trough 55 at the current position. When sampling, the controller 2 is started.

[0051] After the controller 2 is started, it controls the linear reciprocating driver 81 to drive the rack 82 to move horizontally back and forth. The rack 82 can drive the driven gear 84 to drive the rotating shaft 83 to rotate. The rotating shaft 83 can drive the annular baffle sleeve 54 to rotate through the rotating roller 53. The two troughs 55 will rotate synchronously. The trough 55 loaded with material will rotate to the corresponding rectangular discharge pipe 56. Under the action of gravity, the material will be discharged along the rectangular discharge pipe 56. At the same time, the other trough 55 will rotate to the discharge end of the storage hopper 52. The material will fill the trough 55. Then, the rack 82 moves back, causing the trough 55 to rotate. Thus, the material can be alternately conveyed into the two rectangular discharge pipes 56 through the alternating rotation of the two troughs 55.

[0052] The material entering the rectangular discharge pipe 56 will spread and roll downwards along the inclined surface of the rectangular discharge pipe 56 and pass through the groove 94. The controller 2 controls the electromagnetic component 91 to operate at a frequency of 1 second to 3 seconds. When the electromagnetic component 91 is energized, it will generate magnetic attraction. If a large number of elemental ferromagnetic particles are accumulated inside the material, the magnetic iron particles will continuously exert an attraction and pulling force on the electromagnetic component 91. The electromagnetic component 91 will move towards the bottom of the groove 94. Through the connecting plate 95 and the connecting column 96, a pulling force can be applied to the detection end of the tension sensor 93. The tension sensor 93 will convert the pulling force into an electrical signal and feed it back to the controller 2. The controller 2 will calculate the average value of the tension electrical signal detected by the tension sensor 93 at the current stage.

[0053] The material discharged from the rectangular discharge pipe 56 then enters the fixed cylinder 3 and falls above the weighing gate valve 42 at the weighing hopper 41. At this time, the weight of the weighing sensor 44 increases due to the storage of material. It applies pressure to each weighing sensor 44 through the support ring 46. The weighing sensor 44 converts the pressure into an electrical signal and feeds it back to the controller 2. The controller 2 calculates the average value of the gravity electrical signal detected by the weighing sensor 44 at the current stage.

[0054] Subsequently, controller 2 controls the weighing gate valve 42 to open, and the material inside the weighing hopper 41 will enter the three-way pipe 61. If sampling is required, controller 2 controls the sampling gate valve 63 to open, and the material will be discharged through the discharge end. If sampling is not required, controller 2 controls the discharge gate valve 64 to open, and the material will be discharged into the discharge pipe 62 through the discharge end and finally discharged.

[0055] During the initial detection, the controller 2 measures the average value of the tensile electrical signal detected by the tensile sensor 93 as the baseline benchmark value for magnetic impurities, and the average value of the gravity electrical signal detected by the weighing sensor 44 as the baseline benchmark value for weight fluctuation. Subsequently, when the controller 2 measures the average value of the tensile electrical signal fed back by the tensile sensor 93 for the second time, and the average value of the gravity electrical signal fed back by the weighing sensor 44 for the second time, it will compare the second measured value with the corresponding baseline benchmark value. If the fluctuation of the baseline benchmark value for magnetic impurities exceeds 5%, it is determined that sampling is required. If the fluctuation of the baseline benchmark value for weight fluctuation exceeds 10% (the 5% and 10% thresholds can be customized by the controller 2 according to the sampling requirements), it is determined that sampling is required, and the controller 2 will control the sampling gate valve 63 to open.

[0056] After the controller 2 determines that sampling is required, the controller 2 will use the currently measured basic benchmark value of magnetic impurities and the basic benchmark value of weight fluctuation as the new basic benchmark value. At the same time, the controller 2 will control the timing module 11 to start timing each time sampling. The timing module 11 will calculate the interval between the current sampling and the next sampling, so as to facilitate the judgment of the overall parameters of steel slag solid waste material.

[0057] During sampling, the material discharged from the three-way pipe 61 falls into the sample storage cylinder 72 at the current position. Each time it is stored, the controller 2 controls the rotary motor 101 to drive the gear sleeve 103 through the moving gear 102 to rotate the support plate 71, so that the sample storage cylinder 72 containing the sample rotates and moves away, and the sample storage cylinder 72 without the sample moves to the sampling outlet end of the three-way pipe 61, so that the sample taken each time is stored separately.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A solid waste sampler, comprising a connecting pipe (1) and a controller (2) disposed on one side of the connecting pipe (1), characterized in that, Also includes: Two fixed cylinders (3), weighing unit (4), material distribution unit (5), sampling and diversion unit (6) and sample storage unit (7); The two fixed cylinders (3) are respectively arranged on the lower sides of the connecting pipe (1), and the weighing unit (4) is arranged below the fixed cylinder (3) and connected to the interior of the fixed cylinder (3); The material distribution unit (5) is disposed between two fixed cylinders (3), and the material distribution unit (5) distributes materials into the fixed cylinders (3) with a fixed volume; The sampling and diversion unit (6) is located below the fixed cylinder (3) and the material distribution unit (5), and the sampling and diversion unit (6) is connected to the discharge end of the weighing unit (4); The sample storage unit (7) is located below the sampling diversion unit (6) and is used to store the material discharged by the sampling diversion unit (6).

2. A solid waste sampler according to claim 1, characterized in that, The weighing unit (4) includes a weighing hopper (41), a weighing gate valve (42), a fixing frame (43), multiple weighing sensors (44), and a support spring (45); the weighing hopper (41) is slidably sleeved on the outside of the fixing cylinder (3) and located below the fixing cylinder (3), and a support ring (46) is fixedly sleeved on the outer wall of the weighing hopper (41); the weighing gate valve (42) is installed at the discharge end of the weighing hopper (41); the fixing frame (43) is located below the weighing gate valve (42), and the fixing frame (43) is located below the weighing gate valve (42). The fixed frame (43) is connected to the sampling and diversion unit (6); multiple weighing sensors (44) are fixed on the upper surface of the fixed frame (43) and are evenly distributed around the axis of the weighing hopper (41), and the detection end of the weighing sensor (44) is in contact with the bottom of the support ring (46); multiple sliding rods (47) are fixed at the bottom of the support ring (46), and the sliding rods (47) slide through the surface of the fixed frame (43); the support spring (45) is fixed between the fixed frame (43) and the support ring (46).

3. A solid waste sampler according to claim 2, characterized in that, The material distribution unit (5) includes a distribution cylinder (51), a storage hopper (52), a rotating roller (53), a swing drive mechanism (8), an annular baffle sleeve (54), two material troughs (55), and two rectangular discharge pipes (56); the distribution cylinder (51) is disposed between two fixed cylinders (3); the storage hopper (52) is fixedly inserted into the top of the distribution cylinder (51), and the connecting pipe (1) is fixedly inserted into the top of the storage hopper (52); the rotating roller (53) is coaxially disposed inside the distribution cylinder (51); the swing drive mechanism (8) is installed in the distribution cylinder. The side wall of the cylinder (51) drives the rotating roller (53) to rotate back and forth; the annular baffle sleeve (54) is fixedly sleeved on the outside of the rotating roller (53); the two material troughs (55) are fixedly inserted into the side wall of the annular baffle sleeve (54); the two rectangular discharge pipes (56) are symmetrically inserted into both sides of the distribution cylinder (51). The rotating roller (53) drives the material trough (55) through the annular baffle sleeve (54) to pass through the discharge end of the storage hopper (52) and the feed end of the corresponding rectangular discharge pipe (56). The rectangular discharge pipe (56) is equipped with a magnetic attraction detection mechanism (9).

4. A solid waste sampler according to claim 3, characterized in that, The oscillating drive mechanism (8) includes a linear reciprocating drive (81), a rack (82), a rotating shaft (83), and a driven gear (84); the linear reciprocating drive (81) is fixed to the outer wall of the distribution cylinder (51); the rack (82) is disposed on the outer side of the distribution cylinder (51), and the driving end of the linear reciprocating drive (81) drives the rack (82) to move horizontally reciprocally; the rotating shaft (83) is rotatably disposed on the inner side of the distribution cylinder (51), and the rotating shaft (83) coaxially passes through the rotating roller (53); the driven gear (84) is fixed to the end of the rotating shaft (83), and the rack (82) meshes with the driven gear (84).

5. A solid waste sampler according to claim 3, characterized in that, The magnetic attraction detection mechanism (9) includes multiple electromagnetic components (91), a mounting cover (92), and multiple tension sensors (93); the bottom of the rectangular discharge tube (56) is provided with multiple grooves (94), the electromagnetic components (91) are arranged inside the grooves (94), the bottom of the electromagnetic components (91) is fixed with a connecting plate (95), and the bottom of the connecting plate (95) is fixed with a connecting column (96); the mounting cover (92) is fixed to the bottom of the rectangular discharge tube (56), the electromagnetic components (91) are arranged inside the mounting cover (92), a return spring (97) is fixed between the inner wall of the mounting cover (92) and the connecting plate (95), and the connecting column (96) slides through the bottom of the mounting cover (92); the tension sensor (93) is fixed to the bottom of the mounting cover (92), and the detection end of the tension sensor (93) is fixedly connected to the connecting column (96).

6. A solid waste sampler according to claim 3, characterized in that, The sampling diversion unit (6) includes a three-way pipe (61), a discharge pipe (62), a sampling gate valve (63), and a discharge gate valve (64); the three-way pipe (61) is fixedly inserted into the fixing frame (43), and the valve pipe of the weighing gate valve (42) is slidably inserted into the inside of the feed end of the three-way pipe (61); the discharge pipe (62) is fixed at the bottom of the distribution cylinder (51), and the fixing frame (43) is fixedly connected to the discharge pipe (62); the sampling gate valve (63) is installed inside one of the discharge ends of the three-way pipe (61), and the discharge gate valve (64) is installed inside the other discharge end of the three-way pipe (61), and the discharge end of the valve pipe of the discharge gate valve (64) is fixedly connected to the discharge pipe (62).

7. A solid waste sampler according to claim 6, characterized in that, The sample storage unit (7) includes a support plate (71), multiple sample storage cylinders (72), and a rotary drive mechanism (10). The support plate (71) is rotatably sleeved on the outside of the discharge pipe (62). The sample storage cylinders (72) are detachably connected to the support plate (71), and the sample storage cylinders (72) are evenly distributed in a ring on the upper surface of the support plate (71). The rotary drive mechanism (10) is mounted on a fixed frame (43), and the rotary drive mechanism (10) drives the support plate (71) to rotate. When the support plate (71) rotates, it drives the sample storage cylinders (72) to pass through the three-way pipe (61) and approach the discharge end of the sampling gate valve (63).

8. A solid waste sampler according to claim 7, characterized in that, The rotary drive mechanism (10) includes a rotary motor (101), a moving gear (102), and a gear sleeve (103); the rotary motor (101) is fixed on the top of the fixed frame (43); the moving gear (102) is fixed on the output shaft end of the rotary motor (101); the gear sleeve (103) is fixed on the top of the support plate (71) and sleeved on the outside of the discharge pipe (62), and the moving gear (102) meshes with the gear sleeve (103).

9. A solid waste sampler according to claim 1, characterized in that, The controller (2) is equipped with a timing module (11), and the controller (2) controls the timing module (11) to work according to the electrical signals fed back by the weighing sensor (44) and the tension sensor (93).

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