Coal sample rotating combustion device
By combining a laser heat source and a rotating mechanism, rapid and uniform combustion is achieved for coal sample ash content detection, solving the problems of long detection time and uneven temperature in traditional muffle furnaces, improving detection accuracy and removing impurities from flue gas.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 云鼎科技股份有限公司
- Filing Date
- 2025-04-15
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional muffle furnaces for detecting ash content in coal samples suffer from slow heating rates, long detection times, and uneven temperature distribution, leading to poor accuracy and repeatability.
A coal sample rotary combustion device combining a laser heat source and a rotating mechanism is used. The laser beam heats the coal sample uniformly, and the rotating mechanism ensures that all parts of the coal sample are in full contact with the heat source. Combined with a spray purification mechanism, the flue gas is treated.
It enables rapid and uniform combustion for coal sample ash content detection, shortens the detection time, improves the accuracy and repeatability of the detection, and effectively removes impurities from the flue gas.
Smart Images
Figure CN224303646U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coal sample ash content detection, and more specifically, to a coal sample rotary combustion device. Background Technology
[0002] In the coal energy industry, coal ash content testing is a key step in assessing coal quality, determining coal uses, and ensuring the efficient and clean utilization of coal. As a non-combustible mineral component in coal, ash content not only affects the calorific value and combustion characteristics of coal, but is also closely related to the amount of ash and slag produced after coal combustion and pollutant emissions. Accurately determining the ash content in coal samples is of vital importance for coal pricing, trade settlement, coal classification, and the optimized design of combustion equipment.
[0003] Traditional methods for detecting ash content in coal samples are mainly based on the high-temperature burning method in a muffle furnace. This method involves placing the coal sample in a muffle furnace and burning it for a long time at a specific temperature (usually 815±10℃) to completely burn the combustible substances in the coal sample. The remaining non-combustible minerals are the ash content.
[0004] However, this traditional method has many limitations. On the one hand, the muffle furnace heats up slowly, and the entire testing process is time-consuming, usually requiring several hours to complete a single test, which is difficult to meet the demand for rapid testing in modern coal production and trade. On the other hand, the temperature distribution inside the muffle furnace is uneven, and the temperature of coal samples in different locations varies, which leads to inconsistent combustion rates and degrees, thus affecting the accuracy and repeatability of ash content determination. Utility Model Content
[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a coal sample rotary combustion device.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a coal sample rotary combustion device, comprising a combustion box, a support leg at the bottom of the combustion box, and a combustion chamber inside the combustion box. A laser heat source is installed at the top of the combustion chamber inside the combustion box. A rotating mechanism is installed at the bottom of the combustion box. The output end of the rotating mechanism extends vertically upward to the inside of the combustion chamber and connects to a coal sample placement seat. The coal sample placement seat is located directly below the laser heat source. A flue mechanism is installed on the inner side wall of the combustion chamber on one side of the coal sample placement seat. A reversing pipe communicating with the end of the flue mechanism is installed outside the combustion box. A smoke exhaust pipe is connected to the top of the reversing pipe. A smoke exhaust port is provided at the top of the smoke exhaust pipe, and an end ring is connected to the top of the smoke exhaust pipe outside the smoke exhaust port. A spray purification mechanism is installed between the combustion box and the smoke exhaust pipe. A waste liquid collection box is provided below the smoke exhaust pipe.
[0007] As a further improvement to the technical solution of this utility model, the rotating mechanism includes a servo motor fixedly installed at the bottom of the combustion chamber, the output end of the servo motor being coaxially connected to a drive shaft vertically upward, and a tray support being fixedly connected to the top of the drive shaft.
[0008] As a further improvement to the technical solution of this utility model, the front end of the combustion box is connected to a door panel on the outside of the combustion chamber, and a transparent observation window is installed on the door panel.
[0009] As a further improvement to the technical solution of this utility model, the flue mechanism includes a pipe near the side of the coal sample placement seat, the inner wall of the pipe is equipped with a fireproof net, and a smoke exhaust pump is installed inside the pipe outside the fireproof net, the output end of the smoke exhaust pump is connected to the end of the reversing pipe.
[0010] As a further improvement to the technical solution of this utility model, the top outer surface of the exhaust pipe is provided with an external thread corresponding to the connection of the end ring, the inner wall of the end ring is provided with an internal thread corresponding to the outside of the external thread, and a first filter screen is provided on the top of the end ring.
[0011] As a further improvement to the technical solution of this utility model, the spray purification mechanism includes a water tank chamber disposed inside the combustion chamber. A water pump is fixedly installed at the top of the combustion chamber. A water pump is connected to the water tank inside the water tank chamber via a water inlet pipe, and a water outlet pipe is connected to the water outlet pipe. The end of the water outlet pipe extends to the top of the inner cavity of the flue pipe and is connected to a water collection pipe. Several atomizing nozzles are disposed at the bottom of the water collection pipe. A fixing plate is fixedly connected to the top inner wall of the flue pipe on one side of the water collection pipe. An inclined rod is fixedly connected to the bottom outer wall of the fixing plate below the atomizing nozzles. Several adsorption nets are fixedly connected to the bottom of the inclined rod. An arc-shaped drainage section is disposed at the bottom of the flue pipe below the water collection pipe. A drain port is disposed at the bottom of the arc-shaped drainage section. A second filter screen is fixedly connected to the inner wall of the drain port.
[0012] As a further improvement to the technical solution of this utility model, the front end of the combustion box is connected to the front side of the water tank chamber with a box door, the water pump is fixedly connected to the top of the combustion box by bolts, and the water outlet pipe is a metal pipe structure.
[0013] The beneficial effects of this utility model are:
[0014] This invention employs a laser heat source to emit a conical beam of light, which irradiates the coal sample on the next tray to preheat and burn the coal sample. During rotation, the coal sample is in full contact with the laser beam, ensuring uniform heating of all parts and promoting rapid combustion of combustible materials. Simultaneously, the high energy density of the laser radiation allows the coal sample to reach a high temperature quickly, significantly shortening the detection time. While the coal sample burns, a rotating mechanism at the bottom drives it to rotate, and the smoke generated during combustion is discharged to the outside through a flue. A spray purification mechanism is installed to purify the flue gas during its flow. Multiple adsorption nets are placed below the atomizing nozzles. During flue gas flow, a water film forms on the surface of the adsorption nets after spraying, adsorbing some impurities in the flue gas. The multiple adsorption nets and the second filter increase the adsorption area, thereby enhancing the treatment effect on impurities in the flue gas. The impurities adsorbed on the surface of the adsorption nets are gradually washed away by the atomizing nozzles and flow into the waste liquid collection tank below. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the connection structure of the coal sample placement seat on the rotating mechanism in this utility model.
[0017] Figure 3 This is a schematic diagram of the flue mechanism in this utility model.
[0018] Figure 4 This is a schematic diagram of the installation location of the spray purification mechanism in this utility model.
[0019] Figure 5 This is a schematic diagram of the structure of the middle ring of this utility model.
[0020] The attached diagram is labeled as follows: 1. Combustion box; 2. Support leg; 3. Combustion chamber; 4. Laser heat source; 5. Rotating mechanism; 6. Coal sample placement seat; 7. Flue mechanism; 8. Reversing pipe; 9. Exhaust pipe; 10. End ring; 11. Water tank chamber; 12. Box door; 13. Water pump; 14. Water suction pipe; 15. Water outlet pipe; 16. Drain outlet; 17. Arc-shaped drainage part; 18. Water collection pipe; 19. Atomizing nozzle; 20. Fixing plate; 21. Inclined rod; 22. Adsorption net; 23. Exhaust outlet; 24. Waste liquid collection box; 101. Internal thread; 102. First filter screen; 161. Second filter screen; 901. External thread; 501. Servo motor; 502. Drive shaft; 503. Tray support; 701. Pipe; 702. Fireproof net; 703. Exhaust pump. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] As attached Figure 1-5 The illustrated coal sample rotary combustion device includes a combustion chamber 1, a support leg 2 at the bottom of the combustion chamber 1, a combustion chamber 3 inside the combustion chamber 1, a laser heat source 4 installed at the top of the combustion chamber 3 inside the combustion chamber 1, a rotating mechanism 5 installed at the bottom of the combustion chamber 1, the output end of the rotating mechanism 5 extending vertically upward to the inside of the combustion chamber 3 and connected to a coal sample placement seat 6, the coal sample placement seat 6 being located directly below the laser heat source 4, a flue mechanism 7 installed on one side of the inner wall of the combustion chamber 3 located on the coal sample placement seat 6, a reversing pipe 8 connected to the end of the flue mechanism 7 installed outside the combustion chamber 1, a flue pipe 9 connected to the top of the reversing pipe 8, a flue outlet 23 at the top of the flue pipe 9, and an end ring 10 connected to the top of the flue pipe 9 outside the flue outlet 23, a spray purification mechanism installed between the combustion chamber 1 and the flue pipe 9, and a waste liquid collection box 24 located below the flue pipe 9.
[0023] As attached Figure 1-2 As shown, the rotating mechanism 5 includes a servo motor 501 fixedly installed at the bottom of the combustion chamber 1. The output end of the servo motor 501 is vertically and coaxially connected to a drive shaft 502. The top of the drive shaft 502 is fixedly connected to a tray bracket 503, which facilitates the installation of the rotating mechanism 5 and thus facilitates the rotation of the coal sample placement seat 6, which, together with the laser heat source 4 at the top, performs combustion treatment on the coal sample.
[0024] As attached Figure 1 As shown, the front end of the combustion box 1 is connected to a door panel on the outside of the combustion chamber 3. A transparent observation window is installed on the door panel to facilitate the taking and placing of coal samples and isolation observation.
[0025] As attached Figure 1 and attached Figure 3 As shown, the flue mechanism 7 includes a pipe 701 near the side of the coal sample placement seat 6. A fireproof net 702 is installed on the inner wall of the pipe 701, and a smoke exhaust pump 703 is installed inside the pipe 701 outside the fireproof net 702. The output end of the smoke exhaust pump 703 is connected to the end of the reversing pipe 8.
[0026] As attached Figure 1 and attached Figure 5As shown, the top outer surface of the exhaust pipe 9 is provided with an external thread 901 at the connection point of the end ring 10, and the inner wall of the end ring 10 is provided with an internal thread 101 at the outside of the external thread 901. The top of the end ring 10 is provided with a first filter screen 102, which facilitates the connection and disassembly of the end ring 10 and makes it easier to clean the first filter screen 102.
[0027] As attached Figure 1 and attached Figure 4-5 As shown, the spray purification mechanism includes a water tank chamber 11 located inside the combustion chamber 1. A water pump 13 is fixedly installed at the top of the combustion chamber 1. A water pump 14 connects the inlet end of the water pump 13 to the water tank inside the water tank chamber 11, and a water outlet pipe 15 connects to the outlet end of the water pump 13. The end of the water outlet pipe 15 extends to the top of the inner cavity of the exhaust pipe 9 and connects to a water collection pipe 18. Several atomizing nozzles 19 are provided at the bottom of the water collection pipe 18. A fixing plate 20 is fixedly connected to the top inner wall of the exhaust pipe 9 on one side of the water collection pipe 18. The bottom outer wall of the fixing plate 20 is fixed below the atomizing nozzles 19. An inclined rod 21 is fixedly connected to the bottom of the inclined rod 21, and several adsorption nets 22 are fixedly connected to the bottom of the flue pipe 9. An arc-shaped drainage part 17 is provided at the bottom of the flue pipe 9 below the water collection pipe 18. A drain port 16 is provided at the bottom of the arc-shaped drainage part 17. A second filter screen 161 is fixedly connected to the inner wall of the drain port 16. A door 12 is connected to the front end of the combustion box 1 at the front side of the water tank chamber 11. The water pump 13 is fixedly connected to the top of the combustion box 1 by bolts. The water outlet pipe 15 is a metal pipe structure. The spray purification mechanism is provided to facilitate spray purification treatment of flue gas during use.
[0028] Working principle: This utility model designs a coal sample rotary combustion device, the specific structure of which is shown in the attached instruction manual. Figure 1-5As shown, the coal sample rotation combustion device using laser radiation as a heat source can achieve rapid and uniform heating of the coal sample by precisely focusing the laser beam on the surface of the rotating coal sample. During rotation, the coal sample is in full contact with the laser beam, ensuring uniform heating of all parts and promoting rapid combustion of combustible materials. Simultaneously, the high energy density of the laser radiation can quickly bring the coal sample to a high temperature, significantly shortening the detection time. In use, the outer door of the combustion chamber 3 is opened, the coal sample is placed on the coal sample placement seat 6, and then the door is closed. Observation is performed through the observation window. At this time, the laser heat source 4 is turned on to burn the coal sample, and the servo motor 501 is controlled to rotate the coal sample. During combustion, the smoke pump 703 inside the flue mechanism 7 draws the smoke generated during combustion to... The flue gas flows through the reversing pipe 8 and enters the interior of the exhaust pipe 9. The flue gas is discharged from the two ports: the liquid outlet 16 and the exhaust outlet 23. By setting up a spray purification mechanism, the water pump 13 is controlled to run during use, drawing water from the inside of the water tank into the inside of the water collection pipe 18 and spraying it out from multiple atomizing nozzles 19 at the bottom, so that the flue gas is sprayed and purified during the flow. By setting multiple adsorption nets 22 below the atomizing nozzles 19, a water film is formed on the surface of the adsorption nets 22 after spraying during the flue gas flow, which can adsorb some of the impurities in the flue gas. The setting of multiple adsorption nets 22 and the second filter 161 increases the adsorption area, thereby increasing the treatment effect on impurities in the flue gas. The impurities adsorbed on the surface of the adsorption nets 22 are gradually washed away by the atomizing nozzles 19 and flow into the waste liquid collection box 24 below.
[0029] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A coal sample rotary combustion device, comprising a combustion chamber (1), wherein a support leg (2) is provided at the bottom of the combustion chamber (1), and a combustion chamber (3) is provided inside the combustion chamber (1), wherein a laser heat source (4) is installed at the top of the combustion chamber (3) inside the combustion chamber (1), and a rotating mechanism (5) is installed at the bottom of the combustion chamber (1), wherein the output end of the rotating mechanism (5) extends vertically upward to the inside of the combustion chamber (3) and is connected to a coal sample placement seat (6), wherein the coal sample placement seat (6) is located directly below the laser heat source (4), characterized in that: The inner wall of the combustion chamber (3) is equipped with a flue mechanism (7) on one side of the coal sample placement seat (6). The combustion box (1) is equipped with a reversing pipe (8) that communicates with the end of the flue mechanism (7). The top of the reversing pipe (8) is connected to a flue pipe (9). The top of the flue pipe (9) is provided with a flue outlet (23), and the top of the flue pipe (9) is connected to an end ring (10) outside the flue outlet (23). A spray purification mechanism is installed between the combustion box (1) and the flue pipe (9). A waste liquid collection box (24) is provided below the flue pipe (9).
2. The coal sample rotary combustion device according to claim 1, characterized in that: The rotating mechanism (5) includes a servo motor (501) fixedly installed at the bottom of the combustion chamber (1). The output end of the servo motor (501) is coaxially connected to a drive shaft (502) vertically upward. A tray support (503) is fixedly connected to the top of the drive shaft (502).
3. The coal sample rotary combustion device according to claim 1, characterized in that: The front end of the combustion box (1) is connected to a door panel on the outside of the combustion chamber (3), and a transparent observation window is installed on the door panel.
4. The coal sample rotary combustion device according to claim 1, characterized in that: The flue mechanism (7) includes a pipe (701) near the side of the coal sample placement seat (6), the inner wall of the pipe (701) is fitted with a fireproof net (702), and the inside of the pipe (701) is fitted with a smoke exhaust pump (703) outside the fireproof net (702), the output end of the smoke exhaust pump (703) is connected to the end of the reversing pipe (8).
5. The coal sample rotary combustion device according to claim 1, characterized in that: The top outer surface of the exhaust pipe (9) is provided with an external thread (901) at the connection point of the end ring (10), the inner wall of the end ring (10) is provided with an internal thread (101) at the outside of the external thread (901), and the top of the end ring (10) is provided with a first filter screen (102).
6. The coal sample rotary combustion device according to claim 1, characterized in that: The spray purification mechanism includes a water tank chamber (11) located inside the combustion chamber (1). A water pump (13) is fixedly installed at the top of the combustion chamber (1). A water pump (14) is connected between the inlet end of the water pump (13) and the water tank inside the water tank chamber (11). A water outlet pipe (15) is connected to the outlet end of the water pump (13). The end of the water outlet pipe (15) extends to the top of the inner cavity of the exhaust pipe (9) and is connected to a water collection pipe (18). Several atomizing nozzles (19) are provided at the bottom of the water collection pipe (18). The exhaust pipe (9) A fixing plate (20) is fixedly connected to the inner wall of the top of the water collection pipe (18) on one side. An inclined rod (21) is fixedly connected to the outer wall of the bottom of the fixing plate (20) below the atomizing nozzle (19). Several adsorption nets (22) are fixedly connected to the bottom of the inclined rod (21). An arc-shaped drainage part (17) is provided at the bottom of the exhaust pipe (9) below the water collection pipe (18). A drain port (16) is provided at the bottom of the arc-shaped drainage part (17). A second filter screen (161) is fixedly connected to the inner wall of the drain port (16).
7. The coal sample rotary combustion device according to claim 6, characterized in that: The front end of the combustion chamber (1) is located on the front side of the water tank chamber (11) and is connected to the door (12). The water pump (13) is fixedly connected to the top of the combustion chamber (1) by bolts. The water outlet pipe (15) is a metal pipe structure.