Thermogravimetric joint detection system for heavy metals and major elements of coal gangue

Abstract

The invention provides a thermogravimetric joint detection system for heavy metals and major elements of coal gangue, and belongs to the technical field of coal gangue detection.The thermogravimetric joint detection system comprises a box body, a movable seat is movably mounted at the top of the box body, a fixed box is fixed at the top of the movable seat, and a lifting mechanism is fixedly mounted at the top of the fixed box; and a fixed plate is welded on the movable seat. When the device is used, an exhaust fan generates suction force, the suction force enables harmful gas in the box body to enter a fixed ring pipe through a protective pipe, gas extraction at different positions is achieved through cooperation of an extraction ring pipe and a connecting hole, a heating column moves upwards while gas extraction is conducted, and the surface of the heating column makes contact with a conical groove for rubbing; during rubbing, solid impurities adhered to the heating column are removed, the solid impurities are driven by air flow to enter the collecting box to be collected and sampled during removal, heating is performed after sampling, detection is performed after heating, and the content after detection is compared with the initial content of the raw materials.

Description

Technical Field

[0001] This invention relates to the field of coal gangue testing equipment, specifically a thermogravimetric analysis system for heavy metals and major elements in coal gangue. Background Technology

[0002] With the large accumulation of coal gangue, prolonged exposure to the air can easily cause air and soil pollution. Therefore, it is necessary to accelerate the research and utilization of coal gangue. Coal gangue needs to undergo thermogravimetric analysis, which is the standard method for measuring organic, inorganic and synthetic materials. Simply put, thermogravimetric analysis is the measurement of weight loss at a specific temperature or during the heating process.

[0003] A thermogravimetric analysis device disclosed in patent document CN208043587U includes a furnace, a heating component, a control component, and a weighing component. The heating component is located around the periphery of the furnace. The weighing component is installed below the furnace and is used to weigh the sample inside the furnace in real time. The control component is connected to both the weighing component and the heating component and is used to determine the sample weight fluctuation range based on the sample weight value from the weighing component, thereby controlling the heating component to adjust the sample weight fluctuation range. In use, this technical solution changes the heating curve by judging the upper and lower fluctuation range of the sample weight, adjusting the sample weight fluctuation range within a preset threshold to avoid sample boiling and thus avoid the impact of splashing caused by boiling on the test results. However, while this solution effectively avoids sample boiling, it cannot sample and test the material again after heating, and it cannot filter out excess harmful gases during sampling and testing, resulting in inconvenience in use. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a thermogravimetric analysis system for heavy metals and major elements in coal gangue, thereby solving the problems mentioned in the background section. This invention features a novel structure. During operation, a blower generates suction, drawing harmful gases from inside the chamber through a protective pipe into a fixed ring pipe. The extraction ring pipe and connecting holes work together to extract gases from different locations. Simultaneously, the heating column moves upward, its surface contacting and scraping against a conical groove. This scraping removes solid impurities adhering to the heating column. Simultaneously, airflow carries these solid impurities into a collection box for sampling. After sampling, the sample is heated and then analyzed. The results are then compared with the initial content of the raw material.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a thermogravimetric analysis system for heavy metals and major elements in coal gangue, comprising a housing, a movable seat movably mounted on the top of the housing, a fixed box fixed on the top of the movable seat, a lifting mechanism fixedly mounted on the top of the fixed box, a fixed plate welded to the movable seat, a protrusion welded to the inner wall of the fixed plate, a water tank movably mounted between the fixed plates, a groove formed on the side of the water tank, the protrusion slidably mounted inside the groove, a handle fixed to the movable seat, a weighing assembly fixedly mounted inside the housing, a support column fixed to the weighing assembly, and a support base fixed to one end of the support column.

[0006] Furthermore, a crucible is movably mounted on the support base, a heating base is movably mounted on the side of the support base, an exhaust hole is opened on the top of the heating base, an air inlet pipe is fixed on one side of the heating base, and a display mechanism is fixedly mounted on the side of the box.

[0007] Furthermore, a fan is fixed to one end of the air intake pipe, the fan is installed inside the housing via a motor mount, a maintenance plate is movably installed at one end of the housing, an opening is opened at the top of the housing, a slot is opened on the side of the opening, a slider is slidably installed inside the slot, and the slider is fixed to the bottom of the movable seat.

[0008] Furthermore, a fixed pipe is fixed to one end of the water tank, a tapered tube is movably installed inside the fixed pipe, a threaded column is rotatably installed inside the fixed pipe, the threaded column is rotatably installed at the other end of the water tank, and an opening is formed at the top of the fixed pipe.

[0009] Furthermore, a movable column is installed on the lifting mechanism, a conical seat is fixed on the movable column, a ring seat is movably installed on the side of the conical seat, a fixed ring tube is fixed on the outer wall of the ring seat, and an extraction tube and a horizontal tube are respectively fixed on the fixed ring tube.

[0010] Furthermore, a circulation pipe is fixed on the horizontal pipe, a collection box is fixed between the extraction pipe and the circulation pipe, a dust collection box is movably installed inside the collection box, the dust collection box is movably installed on the side of the fixed box, and a heating column is fixed at the bottom of the ring seat.

[0011] Furthermore, a protective tube is fixed to the side of the heating column, a filter groove is opened on the side of the protective tube, one end of the protective tube is fixed to a ring seat, a conical groove is opened on the ring seat, and an igniter is fixed to one end of the heating column.

[0012] Furthermore, a connecting hole is fixed on the side of the conical groove, and a extraction ring tube is fixed at one end of the connecting hole, the extraction ring tube being connected to the fixed ring tube.

[0013] Furthermore, a fan is fixed to one end of the horizontal tube, an exhaust pipe is fixed to the fan, one end of the exhaust pipe is movably installed inside the tapered tube, and a one-way exhaust valve is fixed inside the tapered tube.

[0014] Furthermore, a heat insulation control box is fixed inside the box, and a detection system is fixedly installed inside the heat insulation control box. The detection system includes a temperature detection module and a pressure detection module. The temperature detection module monitors the temperature of the material after heating in real time, and the pressure detection module monitors the weight of the crucible in real time.

[0015] The beneficial effects of this invention are:

[0016] 1. In use, the exhaust fan generates suction, which draws harmful gases from inside the chamber through the protective pipe into the fixed ring pipe. The extraction ring pipe and the connecting hole work together to extract gases from different locations. Simultaneously, the heating column moves upward, and its surface contacts the conical groove to scrape against it. During this scraping, solid impurities adhering to the heating column are removed. At the same time, the airflow carries the solid impurities into the collection box for sampling. After sampling, the sample is heated and then tested. The results are then compared with the initial content of the raw material.

[0017] 2. In this invention, after the crucible is installed inside the support base, the heating base is distributed around the crucible. The high temperature generated by the heating base flows from the side of the crucible by blowing air through the fan. The hot air generated by the heating base and the heating column work together for double preheating. When the material itself is relatively damp, it is dried. Later, after the crucible bends and heats the material, cold air is blown out of the exhaust hole to facilitate the cooling and removal of the crucible.

[0018] 3. In this invention, the water tank is connected to the exhaust pipe through a conical tube. The conical tube is connected to the exhaust pipe under the push of the threaded column. The threaded column is installed inside the handle. The handle and the threaded column cooperate to fix the water tank at the upper and lower limits. After the gas enters the water tank and is filtered and discharged, the conical tube and the exhaust pipe can be separated to quickly disassemble the water tank. After the water tank is disassembled, it is easy to clean the inside. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the thermogravimetric analysis system for heavy metals and major elements in coal gangue according to the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the thermogravimetric analysis system for heavy metals and major elements in coal gangue after the movable seat has been moved, according to the present invention.

[0021] Figure 3This is a schematic diagram of the internal structure of the box of the thermogravimetric analysis system for heavy metals and major elements in coal gangue according to the present invention.

[0022] Figure 4 This is a schematic diagram of the movable seat of a thermogravimetric analysis system for heavy metals and major elements in coal gangue according to the present invention.

[0023] Figure 5 This is a schematic diagram of the support base of a thermogravimetric analysis system for heavy metals and major elements in coal gangue according to the present invention.

[0024] Figure 6 This is a schematic diagram of the ring seat structure of a thermogravimetric analysis system for heavy metals and major elements in coal gangue according to the present invention.

[0025] Figure 7 This is a side view cross-sectional structural diagram of the ring seat of the thermogravimetric analysis system for heavy metals and major elements in coal gangue according to the present invention.

[0026] Figure 8 This is a schematic diagram of the fixed tube structure of a thermogravimetric analysis system for heavy metals and major elements in coal gangue according to the present invention.

[0027] In the diagram: 1. Housing; 2. Maintenance plate; 3. Movable seat; 4. Fixed box; 5. Lifting mechanism; 6. Fixed plate; 7. Protrusion; 8. Water tank; 9. Groove; 10. Display mechanism; 11. Opening; 12. Slot; 13. Weighing assembly; 14. Motor base; 15. Fan; 16. Air inlet pipe; 17. Heating seat; 18. Fixed pipe; 19. Conical pipe; 20. Handle; 21. Protective pipe; 22. Addition... 23. Hot column; 24. Filter tank; 25. Support column; 26. Support base; 27. Crucible; 28. Exhaust port; 29. ​​Movable column; 30. Ring seat; 31. Fixed ring tube; 32. Conical seat; 33. Extraction tube; 34. Collection box; 35. Circulation tube; 36. Horizontal tube; 37. Exhaust fan; 38. Exhaust pipe; 39. Extraction ring tube; 40. Connecting hole; 41. Conical groove; 42. Opening; 43. Threaded column. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0029] Please see Figures 1 to 8This invention provides a technical solution: a thermogravimetric analysis system for heavy metals and major elements in coal gangue, comprising a housing 1, a movable seat 3 movably mounted on the top of the housing 1, a fixed box 4 fixed on the top of the movable seat 3, a lifting mechanism 5 fixedly mounted on the top of the fixed box 4, a fixed plate 6 welded to the movable seat 3, a protrusion 7 welded to the inner wall of the fixed plate 6, a water tank 8 movably mounted between the fixed plates 6, a groove 9 formed on the side of the water tank 8, the protrusion 7 slidably mounted inside the groove 9, a handle 20 fixed on the movable seat 3, a weighing assembly 13 fixedly mounted inside the housing 1, a support column 24 fixed on the weighing assembly 13, a support base 25 fixed at one end of the support column 24, and a weighing balance including a weighing balance for real-time weighing and detection of a crucible 26 and the materials inside.

[0030] In this embodiment, a crucible 26 is movably mounted on the support base 25, and a heating base 17 is movably mounted on the side of the support base 25. An exhaust port 27 is provided on the top of the heating base 17, and an air inlet pipe 16 is fixed to one side of the heating base 17. A display mechanism 10 is fixedly mounted on the side of the housing 1. A fan 15 is fixed to one end of the air inlet pipe 16, and the fan 15 is mounted inside the housing 1 via a motor mount 14. A maintenance plate 2 is movably mounted on one end of the housing 1. An opening 11 is provided on the top of the housing 1, and a slot 12 is provided on the side of the opening 11. The interior of the slot 12... A slider is slidably installed and fixed to the bottom of the movable seat 3. A fixed tube 18 is fixed to one end of the water tank 8. A tapered tube 19 is movably installed inside the fixed tube 18. A threaded column 42 is rotatably installed inside the fixed tube 18. The threaded column 42 is rotatably installed at the other end of the water tank 8. An opening 41 is opened at the top of the fixed tube 18. Electric heating wires are fixedly installed inside the heating seat 17 and the heating column 22. When the electric heating wires are energized, they generate high temperature to preheat and dry the material. An igniter is fixed on the heating column 22. The igniter can ignite and burn the material inside the crucible 26.

[0031] In this embodiment, a movable column 28 is installed on the lifting mechanism 5, a conical seat 31 is fixed on the movable column 28, a ring seat 29 is movably installed on the side of the conical seat 31, a fixed ring tube 30 is fixed on the outer wall of the ring seat 29, an extraction tube 32 and a horizontal tube 35 are respectively fixed on the fixed ring tube 30, a circulation tube 34 is fixed on the horizontal tube 35, a collection box 33 is fixed between the extraction tube 32 and the circulation tube 34, a dust collection box is movably installed inside the collection box 33, and the dust collection box is movably installed on the fixed box 4. On the side of the ring seat 29, a heating column 22 is fixed to the bottom, a protective tube 21 is fixed to the side of the heating column 22, a filter groove 23 is opened on the side of the protective tube 21, one end of the protective tube 21 is fixed to the ring seat 29, a conical groove 40 is opened on the ring seat 29, an igniter is fixed to one end of the heating column 22, the lifting mechanism 5 is a linear reciprocating electric push rod, the lifting mechanism 5 pushes the heating column 22 up and down through the conical seat 31, the up and down movement of the heating column 22 facilitates heating and realizes subsequent sampling.

[0032] In this embodiment, a connecting hole 39 is fixed to the side of the conical groove 40, and an extraction ring pipe 38 is fixed to one end of the connecting hole 39. The extraction ring pipe 38 is connected to the fixed ring pipe 30. An exhaust fan 36 is fixed to one end of the horizontal pipe 35, and an exhaust pipe 37 is fixed to the exhaust fan 36. One end of the exhaust pipe 37 is movably installed inside the conical tube 19. A one-way exhaust valve is fixed inside the conical tube 1. A heat insulation control box is fixed inside the box body 1. A detection system is fixedly installed inside the heat insulation control box. The detection system includes a temperature detection module and a pressure detection module. The temperature detection module monitors the temperature of the material after heating in real time, and the pressure detection module monitors the weight of the crucible 26 in real time. The conical tube 19 is sealed to the exhaust pipes 37 of different diameters under the compression of the threaded column 42, so that the gas inside the exhaust pipe 37 can enter the water tank 8 for filtration.

[0033] Working principle: In use, the movable seat 3 slides inside the slot 12 via the bottom slider. After sliding, the opening 11 opens, and the required material is added to the crucible 26. The crucible 26 is mounted on the support 25. The heating seat 17 is vertically and dynamically mounted around the support 25, without contacting the support 25 to avoid weighing errors in the weighing component 13. In use, the lifting mechanism 5 is activated to push the conical seat 31 and the heating column 22 downward. After the heating column 22 moves downward, it is inserted into the material inside the crucible 26. The electric heating wire inside the heating column 22 generates high temperature, and the fan 15 generates airflow. The airflow flows slowly inside the heating seat 17, carrying heat upward from the periphery of the crucible 26. Through the dual heating of the heating seat 17 and the heating column 22, the material inside the crucible 26 is rapidly dried. After drying, the heating column 22 moves upward and is removed from the crucible 26, and the heating column 33 is removed from the material of the crucible 26. The weight change of the material inside the crucible 26 is detected by the weighing component 13. When it is necessary to ignite the material inside the crucible 26, combustion-supporting material can be placed inside the crucible 26. After the ignition switch on the heating column 22 is ignited, the heating column 22 moves upward and separates from the crucible 26. When the material inside the crucible 26 is heated, the exhaust fan 36 is started to draw the gas generated inside into the extraction ring pipe 38 through the protective pipe 21. The harmful gas in the extraction ring pipe 38 enters the fixed ring pipe 30 and the horizontal pipe 35 and is discharged outward. It enters the water tank 8 through the exhaust pipe 37 and the conical pipe 19. The gas inside the conical pipe 19 is discharged from the opening 41 after passing through the one-way control valve. The gas rolls in the water to filter and adsorb the harmful substances in the gas.

[0034] After combustion, the heating column 22 is moved downwards to contact the material again. After contact, the heating column 22 moves upwards. When the heating column 22 with solid impurities moves to the conical groove 40, the conical groove 40 scrapes off the solid impurities on the surface of the heating column 22. During scraping, the extraction ring pipe 38 evacuates air again. The evacuation causes the gas to carry dust from the connecting hole 39 into the fixed ring pipe 30. The gas carries the dust through the extraction pipe 32 into the collection box 33 for collection. After collection, the dust collection box is pulled out to remove the solid impurities inside. After removal, testing is performed to complete the testing of the material after heating the coal gangue. The threaded column 42 is rotated to return the conical tube 19 to its original position. At the same time, the conical tube 19 is returned to its original position and the opening 41 is blocked and sealed. One end of the conical tube 19 is separated from the exhaust pipe 37. The water tank 8 is moved upward and removed. After removal, the solid impurities inside are centrally processed. The blower 15 is started to blow out cold air. The electric heating wire inside the heating seat 17 is not working. The cold air flows from the side of the crucible 26 to cool it down, which facilitates the quick removal of the crucible 26 later.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A thermogravimetric analysis system for heavy metals and major elements in coal gangue, comprising a housing (1), characterized in that: A movable seat (3) is movably installed on the top of the box (1). A fixed box (4) is fixed on the top of the movable seat (3). A lifting mechanism (5) is fixed on the top of the fixed box (4). A fixed plate (6) is welded on the movable seat (3). A protrusion (7) is welded on the inner wall of the fixed plate (6). A water tank (8) is movably installed between the fixed plates (6). A groove (9) is opened on the side of the water tank (8). The protrusion (7) is slidably installed inside the groove (9). A handle (20) is fixed on the movable seat (3). A weighing component (13) is fixedly installed inside the box (1). A support column (24) is fixed on the weighing component (13). A support base (25) is fixed at one end of the support column (24).

2. The thermogravimetric analysis system for heavy metals and major elements in coal gangue according to claim 1, characterized in that: A crucible (26) is movably mounted on the support base (25). A heating base (17) is movably mounted on the side of the support base (25). An exhaust hole (27) is opened on the top of the heating base (17). An air inlet pipe (16) is fixed on one side of the heating base (17). A display mechanism (10) is fixedly mounted on the side of the box (1).

3. The thermogravimetric analysis system for heavy metals and major elements in coal gangue according to claim 2, characterized in that: One end of the air intake pipe (16) is fixed with a fan (15), which is installed inside the housing (1) via a motor mount (14). A maintenance plate (2) is movably installed at one end of the housing (1). An opening (11) is opened at the top of the housing (1), and a slot (12) is opened on the side of the opening (11). A slider is slidably installed inside the slot (12), and the slider is fixed to the bottom of the movable seat (3).

4. The thermogravimetric analysis system for heavy metals and major elements in coal gangue according to claim 1, characterized in that: One end of the water tank (8) is fixed with a fixed pipe (18), a tapered pipe (19) is movably installed inside the fixed pipe (18), a threaded column (42) is rotatably installed inside the fixed pipe (18), the threaded column (42) is rotatably installed at the other end of the water tank (8), and an opening (41) is opened at the top of the fixed pipe (18).

5. The thermogravimetric analysis system for heavy metals and major elements in coal gangue according to claim 1, characterized in that: The lifting mechanism (5) is equipped with a movable column (28), a conical seat (31) is fixed on the movable column (28), a ring seat (29) is movably installed on the side of the conical seat (31), a fixed ring tube (30) is fixed on the outer wall of the ring seat (29), and an extraction tube (32) and a horizontal tube (35) are fixed on the fixed ring tube (30).

6. The thermogravimetric analysis system for heavy metals and major elements in coal gangue according to claim 5, characterized in that: A circulation pipe (34) is fixed on the horizontal pipe (35), and a collection box (33) is fixed between the extraction pipe (32) and the circulation pipe (34). A dust collection box is movably installed inside the collection box (33), and the dust collection box is movably installed on the side of the fixed box (4). A heating column (22) is fixed at the bottom of the ring seat (29).

7. The thermogravimetric analysis system for heavy metals and major elements in coal gangue according to claim 6, characterized in that: A protective tube (21) is fixed to the side of the heating column (22), and a filter groove (23) is opened on the side of the protective tube (21). One end of the protective tube (21) is fixed on the ring seat (29), and a conical groove (40) is opened on the ring seat (29). An igniter is fixed to one end of the heating column (22).

8. The thermogravimetric analysis system for heavy metals and major elements in coal gangue according to claim 7, characterized in that: A connecting hole (39) is fixed on the side of the conical groove (40), and a extraction ring tube (38) is fixed at one end of the connecting hole (39). The extraction ring tube (38) is connected to the fixed ring tube (30).

9. The thermogravimetric analysis system for heavy metals and major elements in coal gangue according to claim 5, characterized in that: One end of the horizontal tube (35) is fixed with an exhaust fan (36), and an exhaust pipe (37) is fixed on the exhaust fan (36). One end of the exhaust pipe (37) is movably installed inside the tapered tube (19), and a one-way exhaust valve is fixed inside the tapered tube (19).

10. The thermogravimetric analysis system for heavy metals and major elements in coal gangue according to claim 1, characterized in that: The heat insulation control box is fixed inside the box (1), and a detection system is fixedly installed inside the heat insulation control box. The detection system includes a temperature detection module and a pressure detection module. The temperature detection module monitors the temperature of the material after heating in real time, and the pressure detection module monitors the weight of the crucible in real time.

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