Coal blending combustion device for thermal power plant
By designing a coal mixing device for thermal power plant including motors, rotating shafts, movable components and metering components, the problem that existing devices cannot effectively crush coal particles and incineration raw materials is solved, effectively stirring and quantitative delivery of incineration raw materials is achieved, and the incineration effect is improved.
Patent Information
- Application Number
- CN202421420380.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing coal mixing equipment of thermal power plants cannot effectively crush larger coal particles, and the incineration raw materials are uncontrollable, resulting in poor incineration effect.
A coal mixing device for thermal power plant is designed, including an external housing, feed pipe, incineration chamber, motor, rotary shaft, movable assembly, screen and metering assembly. The raw materials are stirred and rolled by the motor driving the rotating shaft to stir and roll the raw materials through the screen to enter the metering assembly and automatically lead to the incineration chamber when a certain amount is reached.
Effective crushing and stirring of incinerated raw materials is achieved, quantitative delivery of incinerated raw materials is ensured, and the problem of excessive or too little introduction is avoided in a single time, thereby improving the incineration effect.
Smart Images
Figure CN222670005U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal blending and combustion in thermal power plants, in particular to a coal blending and combustion device in thermal power plants. Background Art
[0002] Coal blending is one of the processes in preparation for coal blending and combustion. In order to meet the production quality requirements, different types of raw coal need to be mixed. After the raw coal is mixed, the mixed coal is transported to the next process for processing to facilitate coal blending and combustion. This process requires the use of a mixing device.
[0003] Most of the existing coal-blending devices in thermal power plants directly introduce the combustion raw materials into the combustion chamber after stirring. The combustion raw materials may contain some larger coal particles. The coal particles cannot be crushed during traditional stirring and mixing, and the amount of combustion raw materials introduced into the combustion chamber cannot be controlled. Too much or too little combustion raw materials introduced at a single time will affect the combustion effect, which causes many inconveniences in actual use.
[0004] Therefore, we propose a coal blending and combustion device for a thermal power plant in order to solve the above-mentioned problems. Utility Model Content
[0005] The utility model provides a coal blending and combustion device for a thermal power plant, which solves the problem that most of the existing coal blending and combustion devices for thermal power plants mentioned in the above background technology directly introduce the combustion raw materials into the combustion chamber after stirring, the combustion raw materials may contain some larger coal particles, the coal particles cannot be crushed during the traditional stirring and mixing, and the amount of the combustion raw materials introduced into the combustion chamber cannot be controlled, and too much or too little combustion raw materials introduced at a single time will affect the combustion effect, which causes many inconveniences in actual use.
[0006] The utility model provides the following technical solution: a coal blending and combustion device for a thermal power plant, comprising an external shell and a feed pipe fixedly installed on the upper end of the external shell, an incineration chamber is opened inside the external shell, a motor is fixedly installed on the inner wall of the upper end of the external shell, a rotating shaft is fixedly connected to the output end of the motor, movable components are installed on both sides of one end of the rotating shaft, a fixed plate is fixedly installed on the inner wall of the external shell, openings are opened on both sides of the fixed plate, screens are fixedly installed in the openings, metering components are installed at the lower ends of the two openings, and the fixed plate is located at the upper end of the incineration chamber.
[0007] As an optional scheme for a coal blending and combustion device for a thermal power plant described in the utility model, a connecting block is fixedly installed at one end of the rotating shaft, a dustproof shell is sleeved on the outer periphery of the motor, and the side wall of the dustproof shell is fixedly connected to the upper inner wall of the external shell.
[0008] As an optional scheme for a coal blending and combustion device for a thermal power plant described in the utility model, the movable component includes a fixed shell fixedly installed on the side walls of both sides of the connecting block, a connecting rod 1 is fixedly installed between the side walls of both sides of the fixed shell, a rolling wheel is equidistantly rotatably connected to the connecting rod 1, and the rolling wheel is in contact with the upper wall of the fixed plate.
[0009] As an optional scheme for a coal blending and combustion device for a thermal power plant described in the utility model, two connecting rods are fixedly installed on both sides of the side walls of the rotating shaft, a cleaning block is fixedly installed on one end of the two connecting rods, and the cleaning block is slidably connected to the inner wall of the external shell.
[0010] As an optional scheme of a coal blending and combustion device for a thermal power plant described in the utility model, the metering component includes a metering barrel fixedly installed at the lower end of the opening, a fixed rod fixedly installed inside the metering barrel, and a slider slidably connected to the fixed rod.
[0011] As an optional scheme for a coal blending and combustion device for a thermal power plant described in the utility model, a spring is fixedly installed between the lower wall of the slider and the inner wall of the lower end of the metering barrel, discharge ports are opened on both side walls of the metering barrel, and a switch is fixedly installed at the lower end of the fixed rod.
[0012] As an optional scheme for a coal blending and combustion device in a thermal power plant described in the utility model, wherein: a linkage component is installed inside the fixed plate, and the linkage component includes a mounting block fixedly installed inside the fixed plate, electric telescopic rods are fixedly installed on both sides of the mounting block, and a baffle is fixedly installed on one end of the electric telescopic rod, the switch is electrically connected to the electric telescopic rod, and the switch can simultaneously control the extension of the electric telescopic rod on the same side and the retraction of the electric telescopic rod on the other side.
[0013] The utility model has the following beneficial effects:
[0014] 1. When using the device, the raw materials can be first passed into the interior of the outer shell through the feed pipe at the upper end of the outer shell. After the raw materials enter the interior of the outer shell, they stay at the upper end of the fixed plate. The motor is started to drive the movable component to stir and crush the raw materials. The raw materials pass through the screen and enter the metering component downward. When the raw materials entering the metering component reach a certain amount, the raw materials automatically enter the incineration chamber downward. The coal blending and combustion device of the thermal power plant can crush and stir the incineration raw materials at the same time, sweep the incineration raw materials of suitable size into the interior of the metering component after stirring, and automatically pour them into the incineration chamber at the lower end after reaching the appropriate amount, so as to achieve the effect of quantitative delivery of incineration raw materials, and prevent too much or too little raw materials poured in at a single time from affecting the incineration effect.
[0015] 2. With the cooperation between connecting rod 2, cleaning block, metering barrel, slider, discharge port, fixed rod, spring, switch, fixed shell, connecting rod 1, rolling wheel, mounting block, electric telescopic rod and baffle, the device cooperates between two metering components and linkage components. One metering component stores material while the other metering component discharges material, which can shorten the time interval between two additions of incineration raw materials, contribute to the continuous incineration, and the inner wall of the outer shell can also be cleaned when the incineration raw materials are stirred. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0017] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model.
[0018] Figure 3 It is a schematic diagram of the structure of the linkage assembly system of the utility model.
[0019] Figure 4 For the utility model Figure 2 Enlarged structural diagram at A in the middle.
[0020] Figure 5 For the utility model Figure 2 Enlarged structural diagram at B in the middle.
[0021] In the figure: 1. external shell; 11. feed pipe; 12. fixed plate; 13. incineration chamber; 14. opening; 15. screen; 2. motor; 21. dust cover; 22. rotating shaft; 23. connecting block; 24. connecting rod 2; 25. cleaning block; 3. metering assembly; 31. metering barrel; 32. slider; 33. discharge port; 34. fixed rod; 35. spring; 36. switch; 4. movable assembly; 41. fixed shell; 42. connecting rod 1; 43. rolling wheel; 5. linkage assembly; 51. mounting block; 52. electric telescopic rod; 53. baffle. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Example 1
[0024] See also Figure 1-Figure 3A coal blending and combustion device for a thermal power plant comprises an outer shell 1 and a feed pipe 11 fixedly installed at the upper end of the outer shell 1, an incineration chamber 13 is opened inside the outer shell 1, a motor 2 is fixedly installed on the inner wall of the upper end of the outer shell 1, a rotating shaft 22 is fixedly connected to the output end of the motor 2, and movable components 4 are installed on both sides of one end of the rotating shaft 22, a fixed plate 12 is fixedly installed on the inner wall of the outer shell 1, openings 14 are opened on both sides of the fixed plate 12, screens 15 are fixedly installed in the openings 14, metering components 3 are installed at the lower ends of the two openings 14, and the fixed plate 12 is located at the upper end of the incineration chamber 13.
[0025] When using the device, the raw materials can be first passed into the interior of the outer shell 1 through the feed pipe 11 at the upper end of the outer shell 1. After the raw materials enter the interior of the outer shell 1, they stay at the upper end of the fixed plate 12, and the motor 2 is started. The motor 2 starts to drive the rotating shaft 22 at its output end to rotate. When the rotating shaft 22 rotates, it drives the movable component 4 at the lower end to stir and crush the raw materials. The raw materials after being stirred evenly pass through the screen 15 in the opening 14 opened on the fixed plate 12 and enter the metering component 3 downward. When the raw materials entering the metering component 3 reach a certain amount, the raw materials automatically enter the incineration chamber 13 downward to add incineration fuel. The device can crush the incineration raw materials while stirring and mixing the incineration raw materials, sweep the incineration raw materials of suitable size into the interior of the metering component 3 after stirring, and automatically pour them into the incineration chamber 13 at the lower end after reaching the appropriate amount, so as to achieve the effect of quantitatively feeding the incineration raw materials, and prevent too much or too little raw materials poured in at a single time from affecting the incineration effect.
[0026] Example 2
[0027] See also Figure 2-Figure 5 A connecting block 23 is fixedly installed at one end of the rotating shaft 22, a dustproof shell 21 is sleeved on the outer periphery of the motor 2, and the side wall of the dustproof shell 21 is fixedly connected to the inner wall of the upper end of the external shell 1. With the cooperation between the rotating shaft 22, the connecting block 23, the motor 2, the dustproof shell 21 and the external shell 1, the dustproof box 21 can protect the motor 2.
[0028] The movable component 4 includes a fixed shell 41 fixedly installed on the side walls of both sides of the connecting block 23, and a connecting rod 42 is fixedly installed between the side walls of the fixed shell 41. A rolling wheel 43 is equidistantly connected to the connecting rod 42 for rotation, and the rolling wheel 43 is in contact with the upper wall of the fixed plate 12. With the cooperation between the fixed shell 41, the connecting block 23, the connecting rod 42, the rolling wheel 43 and the fixed plate 12, when the connecting block 23 rotates, it will drive the rolling wheel 43 in the fixed shell 41 to rotate together, so as to grind and mix the incineration raw materials.
[0029] Connecting rods 24 are fixedly installed on both sides of the side walls of the rotating shaft 22, and a cleaning block 25 is fixedly installed on one end of the connecting rod 24. The cleaning block 25 is slidably connected to the inner wall of the external shell 1. With the cooperation between the rotating shaft 22, the connecting rod 24, the cleaning block 25 and the external shell 1, the inner wall of the external shell 1 can be cleaned at the same time when the incineration raw materials are mixed.
[0030] The metering assembly 3 includes a metering barrel 31 fixedly installed at the lower end of the opening 14, a fixing rod 34 is fixedly installed inside the metering barrel 31, and a slider 32 is slidably connected to the fixing rod 34. With the cooperation between the opening 14, the metering barrel 31, the fixing rod 34 and the slider 32, the incineration raw materials of appropriate caliber can enter the metering barrel 31 through the opening 14.
[0031] A spring 35 is fixedly installed between the lower wall of the slider 32 and the lower inner wall of the metering barrel 31. Discharge ports 33 are opened on both side walls of the metering barrel 31. A switch 36 is fixedly installed on the lower end of the fixing rod 34. With the cooperation between the slider 32, the metering barrel 31, the spring 35, the discharge port 33, the fixing rod 34 and the switch 36, the slider 32 can slide in the metering barrel 31 under the influence of the weight of the incineration raw materials, and when the incineration raw materials on the slider 32 are reduced, it can be lifted upward by the spring 35.
[0032] A linkage assembly 5 is installed inside the fixed plate 12, and the linkage assembly 5 includes a mounting block 51 fixedly installed inside the fixed plate 12, electric telescopic rods 52 are fixedly installed on both sides of the mounting block 51, and a baffle 53 is fixedly installed on one end of the electric telescopic rod 52. The switch 36 is electrically connected to the electric telescopic rod 52, and the switch 36 can simultaneously control the extension of the electric telescopic rod 52 on the same side and the retraction of the electric telescopic rod 52 on the other side. With the cooperation between the fixed plate 12, the fixed plate 12, the mounting block 51, the electric telescopic rod 52, the baffle 53 and the switch 36, when the metering barrel 31 on one side is added with incineration raw materials, the baffle 53 will cover its upper end, and the metering barrel 31 on the other side begins to enter the incineration raw materials at this time.
[0033] When using the device, first pour the incineration raw materials onto the fixed plate 12 through the feed pipe 11, start the motor 2, and the motor 2 starts to drive the rotating shaft 22 and the connecting block 23 at its output end to rotate. At this time, the connecting block 23 drives the fixed shells 41 on both sides to rotate inside the external shell 1. When the fixed shell 41 rotates, the crushing wheels inside it that are in contact with the fixed plate 12 stir and crush the incineration raw materials. The incineration raw materials of suitable size pass through one of the screens 15 into the inside of the metering barrel 31 below, and the incineration raw materials fall on the slider 32. Due to the weight of the incineration raw materials, the slider 32 slides downward along the fixed rod 34. When the amount of incineration raw materials in the metering barrel 31 increases to a certain extent, the slider 32 slides downward until it contacts the switch 36 at the lower end. At this time The electric telescopic rod 52 on the corresponding side starts to automatically extend outward, and the electric telescopic rod 52 on the other side closes and retracts, and the other metering barrel 31 begins to enter the incineration raw materials, and the baffle 53 is pushed outward to block the opening 14. The incineration raw materials flow outward through the discharge ports 33 on both sides of the metering barrel 31 to the inside of the incineration chamber 13 at the lower end. After the incineration raw materials in the metering barrel 31 that is being discharged are exhausted, the slider 32 is lifted back to its original position under the action of the spring 35. The device cooperates between two metering components 3 and a linkage component 5. When one metering component 3 is discharging materials, the other metering component 3 is storing materials. This can shorten the time interval between two additions of incineration raw materials, help to continue incineration, and can also clean the inner wall of the outer shell 1 when stirring the incineration raw materials.
[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A coal blending and combustion device for a thermal power plant, comprising an outer shell (1) and a feed pipe (11) fixedly mounted on the upper end of the outer shell (1), wherein a combustion chamber (13) is provided inside the outer shell (1), characterized in that: A motor (2) is fixedly mounted on the inner wall of the upper end of the outer shell (1); a rotating shaft (22) is fixedly connected to the output end of the motor (2); movable components (4) are mounted on both sides of one end of the rotating shaft (22); a fixing plate (12) is fixedly mounted on the inner wall of the outer shell (1); openings (14) are formed on both sides of the fixing plate (12); screens (15) are fixedly mounted in the openings (14); metering components (3) are mounted at the lower ends of the two openings (14); and the fixing plate (12) is located at the upper end of the incineration chamber (13).
2. A coal blending and combustion device for a thermal power plant according to claim 1, characterized in that: A connecting block (23) is fixedly mounted on one end of the rotating shaft (22); a dust cover (21) is sleeved on the outer periphery of the motor (2); and a side wall of the dust cover (21) is fixedly connected to an inner wall of the upper end of the outer shell (1).
3. A coal blending and combustion device for a thermal power plant according to claim 2, characterized in that: The movable assembly (4) comprises a fixed shell (41) fixedly mounted on the two side walls of the connecting block (23), a connecting rod (42) being fixedly mounted between the two side walls of the fixed shell (41), a rolling wheel (43) being equidistantly rotatably connected to the connecting rod (42), and the rolling wheel (43) being in contact with the upper wall of the fixed plate (12).
4. A coal blending and combustion device for a thermal power plant according to claim 3, characterized in that: A second connecting rod (24) is fixedly mounted on both sides of the side wall of the rotating shaft (22), a cleaning block (25) is fixedly mounted on one end of the second connecting rod (24), and the cleaning block (25) is slidably connected to the inner wall of the outer shell (1).
5. A coal blending and combustion device for a thermal power plant according to claim 4, characterized in that: The metering assembly (3) comprises a metering barrel (31) fixedly mounted at the lower end of the opening (14), a fixing rod (34) fixedly mounted inside the metering barrel (31), and a sliding block (32) slidably connected to the fixing rod (34).
6. A coal blending and combustion device for a thermal power plant according to claim 5, characterized in that: A spring (35) is fixedly mounted between the lower wall of the slider (32) and the inner wall of the lower end of the metering barrel (31). Both side walls of the metering barrel (31) are provided with discharge ports (33). A switch (36) is fixedly mounted at the lower end of the fixing rod (34).
7. A coal blending and combustion device for a thermal power plant according to claim 6, characterized in that: A linkage assembly (5) is installed inside the fixing plate (12), and the linkage assembly (5) comprises a mounting block (51) fixedly installed inside the fixing plate (12), electric telescopic rods (52) are fixedly installed on both sides of the mounting block (51), and a baffle (53) is fixedly installed on one end of the electric telescopic rod (52), and the switch (36) is electrically connected to the electric telescopic rod (52), and the switch (36) can simultaneously control the extension of the electric telescopic rod (52) on the same side and the retraction of the electric telescopic rod (52) on the other side.